US20170044534A1 - Methods and means for efficient skipping of at least one of the following exons of the human duchenne muscular dystrophy gene: 43, 46, 50-53 - Google Patents
Methods and means for efficient skipping of at least one of the following exons of the human duchenne muscular dystrophy gene: 43, 46, 50-53 Download PDFInfo
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- US20170044534A1 US20170044534A1 US15/289,053 US201615289053A US2017044534A1 US 20170044534 A1 US20170044534 A1 US 20170044534A1 US 201615289053 A US201615289053 A US 201615289053A US 2017044534 A1 US2017044534 A1 US 2017044534A1
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Definitions
- the invention relates to the field of genetics, more specifically human genetics.
- the invention in particular relates to modulation of splicing of the human Duchenne Muscular Dystrophy pre-mRNA.
- the invention relates to the field of genetics, more specifically human genetics.
- the invention in particular relates to modulation of splicing of the human Duchenne Muscular Dystrophy pre-mRNA.
- Myopathies are disorders that result in functional impairment of muscles.
- Muscular dystrophy refers to genetic diseases that are characterized by progressive weakness and degeneration of skeletal muscles.
- Duchenne muscular dystrophy (DMD) and Becker muscular dystrophy (BMD) are the most common childhood forms of muscular dystrophy. They are recessive disorders and because the gene responsible for DMD and BMD resides on the X-chromosome, mutations mainly affect males with an incidence of about 1 in 3500 boys.
- DMD and BMD are caused by genetic defects in the DMD gene encoding dystrophin, a muscle protein that is required for interactions between the cytoskeleton and the extracellular matrix to maintain muscle fiber stability during contraction.
- DMD is a severe, lethal neuromuscular disorder resulting in a dependency on wheelchair support before the age of 12 and DMD patients often die before the age of thirty due to respiratory- or heart failure. In contrast, BMD patients often remain ambulatory until later in life, and have near normal life expectancies.
- DMD mutations in the DMD gene are characterized by frame shifting insertions or deletions or nonsense point mutations, resulting in the absence of functional dystrophin. BMD mutations in general keep the reading frame intact, allowing synthesis of a partly functional dystrophin.
- DMD Duchenne muscular dystrophy
- AONs antisense oligonucleotides interfering with splicing signals the skipping of specific exons can be induced in the DMD pre-mRNA, thus restoring the open reading frame and converting the severe DMD into a milder BMD phenotype (van Deutekom et al. Hum Mol Genet. 2001; 10: 1547-54; Aartsma-Rus et al., Hum Mol Genet 2003; 12(8):907-14.). In vivo proof-of-concept was first obtained in the mdx mouse model, which is dystrophin-deficient due to a nonsense mutation in exon 23.
- Intramuscular and intravenous injections of AONs targeting the mutated exon 23 restored dystrophin expression for at least three months (Lu et al. Nat Med. 2003; 8: 1009-14; Lu et al., Proc Natl Acad Sci U S A. 2005;102(1):198-203). This was accompanied by restoration of dystrophin-associated proteins at the fiber membrane as well as functional improvement of the treated muscle.
- In vivo skipping of human exons has also been achieved in the hDMD mouse model, which contains a complete copy of the human DMD gene integrated in chromosome 5 of the mouse (Bremmer-Bout et al. Molecular Therapy. 2004; 10: 232-40; 't Hoen et al. J Biol Chem. 2008; 283: 5899-907).
- the present invention provides a method for inducing, and/or promoting skipping of at least one of exons 43, 46, 50-53 of the DMD pre-mRNA in a patient, preferably in an isolated cell of a patient, the method comprising providing said cell and/or said patient with a molecule that binds to a continuous stretch of at least 8 nucleotides within said exon. It is to be understood that said method encompasses an in vitro, in vivo or ex vivo method.
- a method for inducing and/or promoting skipping of at least one of exons 43, 46, 50-53 of DMD pre-mRNA in a patient, preferably in an isolated cell of said patient, the method comprising providing said cell and/or said patient with a molecule that binds to a continuous stretch of at least 8 nucleotides within said exon.
- a DMD pre-mRNA preferably means the pre-mRNA of a DMD gene of a DMD or BMD patient.
- a patient is preferably intended to mean a patient having DMD or BMD as later defined herein or a patient susceptible to develop DMD or BMD due to his or her genetic background.
- an oligonucleotide used will preferably correct one mutation as present in the DMD gene of said patient and therefore will preferably create a DMD protein that will look like a BMD protein: said protein will preferably be a functional dystrophin as later defined herein.
- an oligonucleotide as used will preferably correct one mutation as present in the BMD gene of said patient and therefore will preferably create a dystrophin which will be more functional than the dystrophin which was originally present in said BMD patient.
- Exon skipping refers to the induction in a cell of a mature mRNA that does not contain a particular exon that is normally present therein. Exon skipping is performed by providing a cell expressing the pre-mRNA of said mRNA with a molecule capable of interfering with essential sequences such as for example the splice donor of splice acceptor sequence that required for splicing of said exon, or a molecule that is capable of interfering with an exon inclusion signal that is required for recognition of a stretch of nucleotides as an exon to be included in the mRNA.
- the term pre-mRNA refers to a non-processed or partly processed precursor mRNA that is synthesized from a DNA template in the cell nucleus by transcription.
- inducing and/or promoting skipping of an exon as indicated herein means that at least 1%, 10%, 20%, 30%, 40%,50%, 60%, 70%, 80%, 90% or more of the DMD mRNA in one or more (muscle) cells of a treated patient will not contain said exon. This is preferably assessed by PCR as described in the examples.
- a method of the invention by inducing and/or promoting skipping of at least one of the following exons 43, 46, 50-53 of the DMD pre-mRNA in one or more (muscle) cells of a patient, provides said patient with a functional dystrophin protein and/or decreases the production of an aberrant dystrophin protein in said patient and/or increases the production of a functional dystrophin is said patient.
- Providing a patient with a functional dystrophin protein and/or decreasing the production of an aberrant dystrophin protein in said patient is typically applied in a DMD patient.
- Increasing the production of a functional dystrophin is typically applied in a BMD patient.
- a preferred method is a method, wherein a patient or one or more cells of said patient is provided with a functional dystrophin protein and/or wherein the production of an aberrant dystrophin protein in said patient is decreased and/or wherein the production of a functional dystrophin is increased in said patient, wherein the level of said aberrant or functional dystrophin is assessed by comparison to the level of said dystrophin in said patient at the onset of the method.
- Decreasing the production of an aberrant dystrophin may be assessed at the mRNA level and preferably means that 99%, 90%, 80%, 70%, 60%, 50%, 40%, 30%, 20%, 10%, 5% or less of the initial amount of aberrant dystrophin mRNA, is still detectable by RT PCR.
- An aberrant dystrophin mRNA or protein is also referred to herein as a non-functional dystrophin mRNA or protein.
- a non functional dystrophin protein is preferably a dystrophin protein which is not able to bind actin and/or members of the DGC protein complex.
- a non-functional dystrophin protein or dystrophin mRNA does typically not have, or does not encode a dystrophin protein with an intact C-terminus of the protein.
- Increasing the production of a functional dystrophin in said patient or in a cell of said patient may be assessed at the mRNA level (by RT-PCR analysis) and preferably means that a detectable amount of a functional dystrophin mRNA is detectable by RT PCR.
- 1%, 5%, 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90% or more of the detectable dystrophin mRNA is a functional dystrophin mRNA.
- Increasing the production of a functional dystrophin in said patient or in a cell of said patient may be assessed at the protein level (by immunofluorescence and western blot analyses) and preferably means that a detectable amount of a functional dystrophin protein is detectable by immunofluorescence or western blot analysis.
- 1%, 5%, 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90% or more of the detectable dystrophin protein is a functional dystrophin protein.
- a functional dystrophin is preferably a wild type dystrophin corresponding to a protein having the amino acid sequence as identified in SEQ ID NO: 1.
- a functional dystrophin is preferably a dystrophin, which has an actin binding domain in its N terminal part (first 240 amino acids at the N terminus), a cystein-rich domain (amino acid 3361 till 3685) and a C terminal domain (last 325 amino acids at the C terminus) each of these domains being present in a wild type dystrophin as known to the skilled person.
- the amino acids indicated herein correspond to amino acids of the wild type dystrophin being represented by SEQ ID NO:1.
- a functional dystrophin is a dystrophin which exhibits at least to some extent an activity of a wild type dystrophin. “At least to some extent” preferably means at least 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90%, 95% or 100% of a corresponding activity of a wild type functional dystrophin.
- an activity of a functional dystrophin is preferably binding to actin and to the dystrophin-associated glycoprotein complex (DGC) (Aartsma-Rus A et al, (2006), Entries in the leiden Duchenne Muscular Dystrophy mutation database: an overview of mutation types and paradoxical cases that confirm the reading-frame rule, Muscle Nerve, 34: 135-144). Binding of dystrophin to actin and to the DGC complex may be visualized by either co-immunoprecipitation using total protein extracts or immunofluorescence analysis of cross-sections, from a muscle biopsy, as known to the skilled person.
- DGC dystrophin-associated glycoprotein complex
- Duchenne muscular dystrophy typically have a mutation in the gene encoding dystrophin that prevent synthesis of the complete protein, i.e of a premature stop prevents the synthesis of the C-terminus.
- the DMD gene also comprises a mutation compared tot the wild type gene but the mutation does typically not induce a premature stop and the C-terminus is typically synthesized.
- a functional dystrophin protein is synthesized that has at least the same activity in kind as the wild type protein, not although not necessarily the same amount of activity.
- the genome of a BMD individual typically encodes a dystrophin protein comprising the N terminal part (first 240 amino acids at the N terminus), a cystein-rich domain (amino acid 3361 till 3685) and a C terminal domain (last 325 amino acids at the C terminus) but its central rod shaped domain may be shorter than the one of a wild type dystrophin (Aartsma-Rus A et al, (2006), Entries in the leiden Duchenne Muscular Dystrophy mutation database: an overview of mutation types and paradoxical cases that confirm the reading-frame rule, Muscle Nerve, 34: 135-144).
- Exon skipping for the treatment of DMD is typically directed to overcome a premature stop in the pre-mRNA by skipping an exon in the rod-shaped domain to correct the reading frame and allow synthesis of remainder of the dystrophin protein including the C-terminus, albeit that the protein is somewhat smaller as a result of a smaller rod domain.
- an individual having DMD and being treated by a method as defined herein will be provided a dystrophin which exhibits at least to some extent an activity of a wild type dystrophin.
- a functional dystrophin is a dystrophin of an individual having BMD: typically said dystrophin is able to interact with both actin and the DGC, but its central rod shaped domain may be shorter than the one of a wild type dystrophin (Aartsma-Rus A et al, (2006), Entries in the leiden Duchenne Muscular Dystrophy mutation database: an overview of mutation types and paradoxical cases that confirm the reading-frame rule, Muscle Nerve, 34: 135-144).
- the central rod-shaped domain of wild type dystrophin comprises 24 spectrin-like repeats (Aartsma-Rus A et al, (2006), Entries in the leiden Duchenne Muscular Dystrophy mutation database: an overview of mutation types and paradoxical cases that confirm the reading-frame rule, Muscle Nerve, 34: 135-144).
- a central rod-shaped domain of a dystrophin as provided herein may comprise 5 to 23, 10 to 22 or 12 to 18 spectrin-like repeats as long as it can bind to actin and to DGC.
- a method of the invention may alleviate one or more characteristics of a myogenic or muscle cell of a patient or alleviate one or more symptoms of a DMD patient having a deletion including but not limited to exons 44, 44-46, 44-47, 44-48, 44-49, 44-51, 44-53 (correctable by exon 43 skipping), 19-45, 21-45, 43-45, 45, 47-54, 47-56 (correctable by exon 46 skipping), 51, 51-53, 51-55, 51-57 (correctable by exon 50 skipping), 13-50, 19-50, 29-50, 43-50, 45-50, 47-50, 48-50, 49-50, 50, 52 (correctable by exon 51 skipping), exons 8-51, 51, 53, 53-55, 53-57, 53-59, 53-60, (correctable by exon 52 skipping) and exons 10-52, 42-52, 43-52, 45-52, 47-52, 48-52, 49-52, 50-52, 52 (correctable by exon 53
- a method of the invention may improve one or more characteristics of a muscle cell of a patient or alleviate one or more symptoms of a DMD patient having small mutations in, or single exon duplications of exon 43, 46, 50-53 in the DMD gene, occurring in a total of 36% of all DMD patients with a deletion (Aartsma-Rus et al, Hum. Mut. 2009)
- exon 46 and/or exon 50-53 is required to restore the open reading frame, including patients with specific deletions, small (point) mutations, or double or multiple exon duplications, such as (but not limited to) a deletion of exons 44-50 requiring the co-skipping of exons 43 and 51, with a deletion of exons 46-50 requiring the co-skipping of exons 45 and 51, with a deletion of exons 44-52 requiring the co-skipping of exons 43 and 53, with a deletion of exons 46-52 requiring the co-skipping of exons 45 and 53, with a deletion of exons 51-54 requiring the co-skipping of exons 50 and 55, with a deletion of exons 53-54 requiring the co-skipping of exons 52 and 55, with a deletion of exons 53-56 requiring the co-skipping of exons 52 and 57,
- the skipping of exon 43 is induced, or the skipping of exon 46 is induced, or the skipping of exon 50 is induced or the skipping of exon 51 is induced or the skipping of exon 52 is induced or the skipping of exon 53 is induced.
- An induction of the skipping of two of these exons is also encompassed by a method of the invention.
- exons 50 and 51, or 52 and 53, or 43 and 51, or 43 and 53, or 51 and 52 preferably skipping of exons 50 and 51, or 52 and 53, or 43 and 51, or 43 and 53, or 51 and 52.
- the skilled person will know which combination of exons needs to be skipped in said patient.
- one or more symptom(s) of a DMD or a BMD patient is/are alleviated and/or one or more characteristic(s) of one or more muscle cells from a DMD or a BMD patient is/are improved.
- symptoms or characteristics may be assessed at the cellular, tissue level or on the patient self
- An alleviation of one or more characteristics may be assessed by any of the following assays on a myogenic cell or muscle cell from a patient: reduced calcium uptake by muscle cells, decreased collagen synthesis, altered morphology, altered lipid biosynthesis, decreased oxidative stress, and/or improved muscle fiber function, integrity, and/or survival. These parameters are usually assessed using immunofluorescence and/or histochemical analyses of cross sections of muscle biopsies.
- the improvement of muscle fiber function, integrity and/or survival may be assessed using at least one of the following assays: a detectable decrease of creatine kinase in blood, a detectable decrease of necrosis of muscle fibers in a biopsy cross-section of a muscle suspected to be dystrophic, and/or a detectable increase of the homogeneity of the diameter of muscle fibers in a biopsy cross-section of a muscle suspected to be dystrophic.
- a detectable decrease of creatine kinase in blood a detectable decrease of necrosis of muscle fibers in a biopsy cross-section of a muscle suspected to be dystrophic
- a detectable increase of the homogeneity of the diameter of muscle fibers in a biopsy cross-section of a muscle suspected to be dystrophic are known to the skilled person.
- Creatine kinase may be detected in blood as described in Hodgetts et al (Hodgetts S., et al, (2006), Neuromuscular Disorders, 16: 591-602.2006).
- a detectable decrease in creatine kinase may mean a decrease of 5%, 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90% or more compared to the concentration of creatine kinase in a same DMD or BMD patient before treatment.
- a detectable decrease of necrosis of muscle fibers is preferably assessed in a muscle biopsy, more preferably as described in Hodgetts et al (Hodgetts S., et al, (2006), Neuromuscular Disorders, 16: 591-602.2006) using biopsy cross-sections.
- a detectable decrease of necrosis may be a decrease of 5%, 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90% or more of the area wherein necrosis has been identified using biopsy cross-sections. The decrease is measured by comparison to the necrosis as assessed in a same DMD or BMD patient before treatment.
- a detectable increase of the homogeneity of the diameter of a muscle fiber is preferably assessed in a muscle biopsy cross-section, more preferably as described in Hodgetts et al (Hodgetts S., et al, (2006), Neuromuscular Disorders, 16: 591-602.2006).
- the increase is measured by comparison to the homogeneity of the diameter of a muscle fiber in a same DMD or BMD patient before treatment
- An alleviation of one or more symptoms may be assessed by any of the following assays on the patient self: prolongation of time to loss of walking, improvement of muscle strength, improvement of the ability to lift weight, improvement of the time taken to rise from the floor, improvement in the nine-meter walking time, improvement in the time taken for four-stairs climbing, improvement of the leg function grade, improvement of the pulmonary function, improvement of cardiac function, improvement of the quality of life.
- assays are known to the skilled person.
- Detectable improvement or prolongation is preferably a statistically significant improvement or prolongation as described in Hodgetts et al (Hodgetts S., et al, (2006), Neuromuscular Disorders,16: 591-602.2006).
- the alleviation of one or more symptom(s) of Duchenne Muscular Dystrophy or Becker Muscular Dystrophy may be assessed by measuring an improvement of a muscle fiber function, integrity and/or survival as later defined herein.
- a treatment in a method according to the invention may have a duration of at least one week, at least one month, at least several months, at least one year, at least 2, 3, 4, 5, 6 years or more.
- Each molecule or oligonucleotide or equivalent thereof as defined herein for use according to the invention may be suitable for direct administration to a cell, tissue and/or an organ in vivo of individuals affected by or at risk of developing DMD or BMD, and may be administered directly in vivo, ex vivo or in vitro.
- the frequency of administration of a molecule or an oligonucleotide or a composition of the invention may depend on several parameters such as the age of the patient, the mutation of the patient, the number of molecules (dose), the formulation of said molecule. The frequency may be ranged between at least once in a two weeks, or three weeks or four weeks or five weeks or a longer time period.
- a molecule or oligonucleotide or equivalent thereof can be delivered as is to a cell.
- oligonucleotide or equivalent thereof When administering said molecule, oligonucleotide or equivalent thereof to an individual, it is preferred that it is dissolved in a solution that is compatible with the delivery method.
- a solution For intravenous, subcutaneous, intramuscular, intrathecal and/or intraventricular administration it is preferred that the solution is a physiological salt solution.
- Particularly preferred for a method of the invention is the use of an excipient that will further enhance delivery of said molecule, oligonucleotide or functional equivalent thereof as defined herein, to a cell and into a cell, preferably a muscle cell.
- an additional molecule is used which is able to induce and/or promote skipping of another exon of the DMD pre-mRNA of a patient.
- the second exon is selected from: exon 6, 7, 11, 17, 19, 21, 43, 44, 45, 50, 51, 52, 53, 55, 57, 59, 62, 63, 65, 66, 69, or 75 of the DMD pre-mRNA of a patient.
- Molecules which can be used are depicted in any one of Table 1 to 7. This way, inclusion of two or more exons of a DMD pre-mRNA in mRNA produced from this pre-mRNA is prevented.
- This embodiment is further referred to as double- or multi-exon skipping (Aartsma-Rus A, Janson AA, Kaman WE, et al. Antisense-induced multiexon skipping for Duchenne muscular dystrophy makes more sense. Am J Hum Genet 2004;74(1):83-92, Aartsma-Rus A, Kaman W E, Weij R, den Dunnen J T, van Ommen G J, van Deutekom J C.
- This multi-skipping was notably so for the combination of oligonucleotides derived from the DMD gene, wherein one oligonucleotide for exon 45 and one oligonucleotide for exon 51 was added to a cell transcribing the DMD gene.
- Such a set-up resulted in mRNA being produced that did not contain exons 45 to 51.
- the structure of the pre-mRNA in the presence of the mentioned oligonucleotides was such that the splicing machinery was stimulated to connect exons 44 and 52 to each other.
- stretches of nucleotides complementary to at least two dystrophin exons are separated by a linking moiety.
- the at least two stretches of nucleotides are thus linked in this embodiment so as to form a single molecule.
- said compounds can be administered to an individual in any order.
- said compounds are administered simultaneously (meaning that said compounds are administered within 10 hours, preferably within one hour). This is however not necessary.
- said compounds are administered sequentially.
- a molecule as defined herein is preferably an oligonucleotide or antisense oligonucleotide (AON).
- any of exon 43, 46, 50-53 is specifically skipped at a high frequency using a molecule that preferably binds to a continuous stretch of at least 8 nucleotides within said exon.
- this effect can be associated with a higher binding affinity of said molecule, compared to a molecule that binds to a continuous stretch of less than 8 nucleotides, there could be other intracellular parameters involved that favor thermodynamic, kinetic, or structural characteristics of the hybrid duplex.
- a molecule that binds to a continuous stretch of at least 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37,38, 39, 40, 41, 42, 43,44, 45, 46, 47, 48, 49, 50 nucleotides within said exon is used.
- a molecule or an oligonucleotide of the invention which comprises a sequence that is complementary to a part of any of exon 43, 46, 50-53 of DMD pre-mRNA is such that the complementary part is at least 50% of the length of the oligonucleotide of the invention, more preferably at least 60%, even more preferably at least 70%, even more preferably at least 80%, even more preferably at least 90% or even more preferably at least 95%, or even more preferably 98% and most preferably up to 100%.
- “A part of said exon” preferably means a stretch of at least 8 nucleotides.
- an oligonucleotide of the invention consists of a sequence that is complementary to part of said exon DMD pre-mRNA as defined herein.
- an oligonucleotide may comprise a sequence that is complementary to part of said exon DMD pre-mRNA as defined herein and additional flanking sequences.
- the length of said complementary part of said oligonucleotide is of at least 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27 , 28 , 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50 nucleotides.
- additional flanking sequences are used to modify the binding of a protein to said molecule or oligonucleotide, or to modify a thermodynamic property of the oligonucleotide, more preferably to modify target RNA binding affinity.
- a preferred molecule to be used in a method of the invention binds or is complementary to a continuous stretch of at least 8 nucleotides within one of the following nucleotide sequences selected from:
- the invention provides distinct molecules that can be used in a method for efficiently skipping of at least one of exon 43, exon 46 and/or exon 50-53.
- skipping effect can be addressed to the relatively high density of putative SR protein binding sites within said stretches, there could be other parameters involved that favor uptake of the molecule or other, intracellular parameters such as thermodynamic, kinetic, or structural characteristics of the hybrid duplex.
- a molecule that binds to a continuous stretch comprised within or consisting of any of SEQ ID NO 2-7 results in highly efficient skipping of exon 43, exon 46 and/or exon 50- 53 respectively in a cell and/or in a patient provided with this molecule. Therefore, in a preferred embodiment, a method is provided wherein a molecule binds to a continuous stretch of at least 8, 10, 12, 15, 18, 20, 25, 30, 35, 40, 45, 50 nucleotides within SEQ ID NO 2-7.
- the invention provides a molecule comprising or consisting of an antisense nucleotide sequence selected from the antisense nucleotide sequences depicted in any of Tables 1 to 6.
- a molecule of the invention preferably comprises or consist of the antisense nucleotide sequence of SEQ ID NO 16, SEQ ID NO 65, SEQ ID NO 70, SEQ ID NO 91, SEQ ID NO 110, SEQ ID NO 117, SEQ ID NO 127, SEQ ID NO 165, SEQ ID NO 166, SEQ ID NO 167, SEQ ID NO 246, SEQ ID NO 299, SEQ ID NO:357.
- a preferred molecule of the invention comprises a nucleotide-based or nucleotide or an antisense oligonucleotide sequence of between 8 and 50 nucleotides or bases, more preferred between 10 and 50 nucleotides, more preferred between 20 and 40 nucleotides, more preferred between 20 and 30 nucleotides, such as 20 nucleotides, 21 nucleotides, 22 nucleotides, 23 nucleotides, 24 nucleotides, 25 nucleotides, 26 nucleotides, 27 nucleotides, 28 nucleotides, 29 nucleotides, 30 nucleotides, 31 nucleotides, 32 nucleotides, 33 nucleotides, 34 nucleotides, 35 nucleotides, 36 nucleotides, 37 nucleotides, 38 nucleotides, 39 nucleotides, 40 nucleotides, 41 nucleotides, 42 nucleotides, 43 nucleot
- a most preferred molecule of the invention comprises a nucleotide-based sequence of 25 nucleotides.
- a molecule of the invention is a compound molecule that binds to the specified sequence, or a protein such as an RNA-binding protein or a non-natural zinc-finger protein that has been modified to be able to bind to the corresponding nucleotide sequence on a DMD pre-RNA molecule.
- Methods for screening compound molecules that bind specific nucleotide sequences are, for example, disclosed in PCT/NL01/00697 and U.S. Pat. No. 6,875,736, which are herein incorporated by reference.
- Methods for designing RNA-binding Zinc-finger proteins that bind specific nucleotide sequences are disclosed by Friesen and Darby, Nature Structural Biology 5: 543-546 (1998) which is herein incorporated by reference.
- a preferred molecule of the invention binds to at least part of the sequence of SEQ ID NO 2:5′-AGAUAGUCUACAACAAAGCUCAGGUCGGAUUGACAUUAUUCAU AGCAAGAAGACAGCAGCAUUGCAAAGUGCAACGCCUGUGG-3′ which is present in exon 43 of the DMD gene. More preferably, the invention provides a molecule comprising or consisting of the antisense nucleotide sequence of SEQ ID NO 8 to SEQ ID NO 69.
- the invention provides a molecule comprising or consisting of the antisense nucleotide sequence of SEQ ID NO 16 and/or SEQ ID NO 65.
- the invention provides a molecule comprising or consisting of the antisense nucleotide sequence of SEQ ID NO 65. It was found that this molecule is very efficient in modulating splicing of exon 43 of the DMD pre-mRNA in a muscle cell and/or in a patient.
- Another preferred molecule of the invention binds to at least part of the sequence of SEQ ID NO 3: 5′-UUAUGGUUGGAGGAAGCAGAUAACAUUGCUAGUAUCCCACUUG AACCUGGAAAAGAGCAGCAACUAAAAGAAAAGC-3′ which is present in exon 46 of the DMD gene. More preferably, the invention provides a molecule comprising or consisting of the antisense nucleotide sequence of SEQ ID NO 70 to SEQ ID NO 122.
- the invention provides a molecule comprising or consisting of the antisense nucleotide sequence of SEQ ID NO 70, SEQ ID NO 91, SEQ ID NO 110, and/or SEQ ID NO117.
- the invention provides a molecule comprising or consisting of the antisense nucleotide sequence of SEQ ID NO 117. It was found that this molecule is very efficient in modulating splicing of exon 46 of the DMD pre-mRNA in a muscle cell or in a patient.
- Another preferred molecule of the invention binds to at least part of the sequence of SEQ ID NO 4: 5′-GGCGGTAAACCGUUUACUUCAAGAGCU GAGGGCAAAGCAGCCUG ACCUAGCUCCUGGACUGACCACUAUUGG-3′ which is present in exon 50 of the DMD gene. More preferably, the invention provides a molecule comprising or consisting of the antisense nucleotide sequence of SEQ ID NO 123 to SEQ ID NO 167 and/or SEQ ID NO 529 to SEQ ID NO 535.
- the invention provides a molecule comprising or consisting of the antisense nucleotide sequence of SEQ ID NO 127, or SEQ ID NO 165, or SEQ ID NO 166 and/or SEQ ID NO 167.
- the invention provides a molecule comprising or consisting of the antisense nucleotide sequence of SEQ ID NO 127. It was found that this molecule is very efficient in modulating splicing of exon 50 of the DMD pre-mRNA in a muscle cell and/or in a patient.
- Another preferred molecule of the invention binds to at least part of the sequence of SEQ ID NO 5: 5′-CUCCUACUCAGACUGUUACUCUGGUGACACAACCUGUGGUUACU AAGGAAACUGCCAUC UCCAAACUAGAAAUGCCAUCUUCCUUGAUG UUGGAGGUAC-3′ which is present in exon 51 of the DMD gene. More preferably, the invention provides a molecule comprising or consisting of the antisense nucleotide sequence of SEQ ID NO 168 to SEQ ID NO 241.
- Another preferred molecule of the invention binds to at least part of the sequence of SEQ ID NO 6: 5′-AUGCAGGAUUUGGAACAGAGGCGUCCCCAGUUGGAAGAACUCAU UACCGCUGCCCAAAAUUUGAAAAACAAGACCAGCAAUCAAGAGGCU-3′ which is present in exon 52 of the DMD gene. More preferably, the invention provides a molecule comprising or consisting of the antisense nucleotide sequence of SEQ ID NO 242 to SEQ ID NO 310. In an even more preferred embodiment, the invention provides a molecule comprising or consisting of the antisense nucleotide sequence of SEQ ID NO 246 and/or SEQ ID NO 299.
- the invention provides a molecule comprising or consisting of the antisense nucleotide sequence of SEQ ID NO 299. It was found that this molecule is very efficient in modulating splicing of exon 52 of the DMD pre-mRNA in a muscle cell and/or in a patient.
- Another preferred molecule of the invention binds to at least part of the sequence of SEQ ID NO 7: 5′-AAAUGUUAAAGGAUUCAACACAAUGGCUGGAAGCUAAGGAAGAA GCUGAGCAGGUCUUAGGACAGGCCAGAG-3′ which is present in exon 53 of the DMD gene. More preferably, the invention provides a molecule comprising or consisting of the antisense nucleotide sequence of SEQ ID NO 311 to SEQ ID NO 358.
- the invention provides a molecule comprising or consisting of the antisense nucleotide sequence of SEQ ID NO 357. It was found that this molecule is very efficient in modulating splicing of exon 53 of the DMD pre-mRNA in a muscle cell and/or in a patient.
- a nucleotide sequence of a molecule of the invention may contain RNA residues, or one or more DNA residues, and/or one or more nucleotide analogues or equivalents, as will be further detailed herein below.
- a molecule of the invention comprises one or more residues that are modified to increase nuclease resistance, and/or to increase the affinity of the antisense nucleotide for the target sequence. Therefore, in a preferred embodiment, the antisense nucleotide sequence comprises at least one nucleotide analogue or equivalent, wherein a nucleotide analogue or equivalent is defined as a residue having a modified base, and/or a modified backbone, and/or a non-natural internucleoside linkage, or a combination of these modifications.
- the nucleotide analogue or equivalent comprises a modified backbone.
- backbones are provided by morpholino backbones, carbamate backbones, siloxane backbones, sulfide, sulfoxide and sulfone backbones, formacetyl and thioformacetyl backbones, methyleneformacetyl backbones, riboacetyl backbones, alkene containing backbones, sulfamate, sulfonate and sulfonamide backbones, methyleneimino and methylenehydrazino backbones, and amide backbones.
- Phosphorodiamidate morpholino oligomers are modified backbone oligonucleotides that have previously been investigated as antisense agents.
- Morpholino oligonucleotides have an uncharged backbone in which the deoxyribose sugar of DNA is replaced by a six membered ring and the phosphodiester linkage is replaced by a phosphorodiamidate linkage.
- Morpholino oligonucleotides are resistant to enzymatic degradation and appear to function as antisense agents by arresting translation or interfering with pre-mRNA splicing rather than by activating RNase H.
- Morpholino oligonucleotides have been successfully delivered to tissue culture cells by methods that physically disrupt the cell membrane, and one study comparing several of these methods found that scrape loading was the most efficient method of delivery; however, because the morpholino backbone is uncharged, cationic lipids are not effective mediators of morpholino oligonucleotide uptake in cells. A recent report demonstrated triplex formation by a morpholino oligonucleotide and, because of the non-ionic backbone, these studies showed that the morpholino oligonucleotide was capable of triplex formation in the absence of magnesium.
- the linkage between the residues in a backbone do not include a phosphorus atom, such as a linkage that is formed by short chain alkyl or cycloalkyl internucleoside linkages, mixed heteroatom and alkyl or cycloalkyl internucleoside linkages, or one or more short chain heteroatomic or heterocyclic internucleoside linkages.
- a preferred nucleotide analogue or equivalent comprises a Peptide Nucleic Acid (PNA), having a modified polyamide backbone (Nielsen, et al. (1991) Science 254, 1497-1500). PNA-based molecules are true mimics of DNA molecules in terms of base-pair recognition.
- the backbone of the PNA is composed of N-(2-aminoethyl)-glycine units linked by peptide bonds, wherein the nucleobases are linked to the backbone by methylene carbonyl bonds.
- An alternative backbone comprises a one-carbon extended pyrrolidine PNA monomer (Govindaraju and Kumar (2005) Chem. Commun, 495-497).
- PNA-RNA hybrids are usually more stable than RNA-RNA or RNA-DNA hybrids, respectively (Egholm et al (1993) Nature 365, 566-568).
- a further preferred backbone comprises a morpholino nucleotide analog or equivalent, in which the ribose or deoxyribose sugar is replaced by a 6-membered morpholino ring.
- a most preferred nucleotide analog or equivalent comprises a phosphorodiamidate morpholino oligomer (PMO), in which the ribose or deoxyribose sugar is replaced by a 6-membered morpholino ring, and the anionic phosphodiester linkage between adjacent morpholino rings is replaced by a non-ionic phosphorodiamidate linkage.
- PMO phosphorodiamidate morpholino oligomer
- a nucleotide analogue or equivalent of the invention comprises a substitution of one of the non-bridging oxygens in the phosphodiester linkage. This modification slightly destabilizes base-pairing but adds significant resistance to nuclease degradation.
- a preferred nucleotide analogue or equivalent comprises phosphorothioate, chiral phosphorothioate, phosphorodithioate, phosphotriester, aminoalkylphosphotriester, H-phosphonate, methyl and other alkyl phosphonate including 3′-alkylene phosphonate, 5′-alkylene phosphonate and chiral phosphonate, phosphinate, phosphoramidate including 3′-amino phosphoramidate and aminoalkylphosphoramidate, thionophosphoramidate, thionoalkylphosphonate, thionoalkylphosphotriester, selenophosphate or boranophosphate.
- a further preferred nucleotide analogue or equivalent of the invention comprises one or more sugar moieties that are mono- or disubstituted at the 2′, 3′ and/or 5′ position such as a —OH; —F; substituted or unsubstituted, linear or branched lower (C1-C10) alkyl, alkenyl, alkynyl, alkaryl, allyl, aryl, or aralkyl, that may be interrupted by one or more heteroatoms; O-, S-, or N-alkyl; O-, S-, or N-alkenyl; O-, S- or N-alkynyl; O-, S-, or N-allyl; O-alkyl-O-alkyl, -methoxy, -aminopropoxy; -aminoxy; methoxyethoxy; -dimethylaminooxyethoxy; and -dimethylaminoethoxyethoxy.
- the sugar moiety can be a pyranose or derivative thereof, or a deoxypyranose or derivative thereof, preferably a ribose or a derivative thereof, or a deoxyribose or a derivative thereof.
- Such preferred derivatized sugar moieties comprise Locked Nucleic Acid (LNA), in which the 2′-carbon atom is linked to the 3′ or 4′ carbon atom of the sugar ring thereby forming a bicyclic sugar moiety.
- LNA Locked Nucleic Acid
- a preferred LNA comprises 2′-O,4′-C-ethylene-bridged nucleic acid (Morita et al. 2001. Nucleic Acid Res Supplement No. 1: 241-242). These substitutions render the nucleotide analogue or equivalent RNase H and nuclease resistant and increase the affinity for the target RNA.
- an antisense oligonucleotide of the invention has at least two different types of analogues or equivalents.
- a preferred antisense oligonucleotide according to the invention comprises a 2′-O alkyl phosphorothioate antisense oligonucleotide, such as 2′-O-methyl modified ribose (RNA), 2′-O-ethyl modified ribose, 2′-O-propyl modified ribose, and/or substituted derivatives of these modifications such as halogenated derivatives.
- RNA 2′-O-methyl modified ribose
- 2′-O-ethyl modified ribose 2′-O-propyl modified ribose
- substituted derivatives of these modifications such as halogenated derivatives.
- a most preferred antisense oligonucleotide according to the invention comprises of 2′-O-methyl phosphorothioate ribose.
- a functional equivalent of a molecule of the invention may be defined as an oligonucleotide as defined herein wherein an activity of said functional equivalent is retained to at least some extent.
- an activity of said functional equivalent is inducing exon 43, 46, 50, 51, 52, or 53 skipping and providing a functional dystrophin protein. Said activity of said functional equivalent is therefore preferably assessed by detection of exon 43, 46, 50, 51, 52, or 53 skipping and by quantifying the amount of functional dystrophin protein.
- a functional dystrophin is herein preferably defined as being a dystrophin able to bind actin and members of the DGC protein complex.
- the assessment of said activity of an oligonucleotide is preferably done by RT-PCR or by immunofluorescence or Western blot analyses. Said activity is preferably retained to at least some extent when it represents at least 50%, or at least 60%, or at least 70% or at least 80% or at least 90% or at least 95% or more of corresponding activity of said oligonucleotide the functional equivalent derives from. Throughout this application, when the word oligonucleotide is used it may be replaced by a functional equivalent thereof as defined herein.
- distinct antisense oligonucleotides can be combined for efficiently skipping any of exon 43, exon 46, exon 50, exon 51, exon 52 and/or exon 53 of the human DMD pre-mRNA. It is encompassed by the present invention to use one, two, three, four, five or more oligonucleotides for skipping one of said exons (i.e. exon, 43, 46, 50, 51, 52, or 53). It is also encompassed to use at least two oligonucleotides for skipping at least two, of said exons. Preferably two of said exons are skipped. More preferably, these two exons are:
- An antisense oligonucleotide can be linked to a moiety that enhances uptake of the antisense oligonucleotide in cells, preferably muscle cells.
- moieties are cholesterols, carbohydrates, vitamins, biotin, lipids, phospholipids, cell-penetrating peptides including but not limited to antennapedia, TAT, transportan and positively charged amino acids such as oligoarginine, poly-arginine, oligolysine or polylysine, antigen-binding domains such as provided by an antibody, a Fab fragment of an antibody, or a single chain antigen binding domain such as a cameloid single domain antigen-binding domain.
- a preferred antisense oligonucleotide comprises a peptide-linked PMO.
- a preferred antisense oligonucleotide comprising one or more nucleotide analogs or equivalents of the invention modulates splicing in one or more muscle cells, including heart muscle cells, upon systemic delivery.
- systemic delivery of an antisense oligonucleotide comprising a specific nucleotide analog or equivalent might result in targeting a subset of muscle cells, while an antisense oligonucleotide comprising a distinct nucleotide analog or equivalent might result in targeting of a different subset of muscle cells.
- a combination of antisense oligonucleotides comprising different nucleotide analogs or equivalents for inducing skipping of exon 43, 46, 50, 51, 52, or 53 of the human DMD pre-mRNA.
- a cell can be provided with a molecule capable of interfering with essential sequences that result in highly efficient skipping of exon 43, exon 46, exon 50, exon 51, exon 52 or exon 53 of the human DMD pre-mRNA by plasmid-derived antisense oligonucleotide expression or viral expression provided by adenovirus- or adeno-associated virus-based vectors.
- a viral-based expression vector comprising an expression cassette that drives expression of a molecule as identified herein. Expression is preferably driven by a polymerase III promoter, such as a U1, a U6, or a U7 RNA promoter.
- a muscle or myogenic cell can be provided with a plasmid for antisense oligonucleotide expression by providing the plasmid in an aqueous solution.
- a plasmid can be provided by transfection using known transfection agentia such as, for example, LipofectAMINETM 2000 (Invitrogen) or polyethyleneimine (PEI; ExGen500 (MBI Fermentas)), or derivatives thereof.
- AAV adenovirus associated virus
- a preferred AAV-based vector comprises an expression cassette that is driven by a polymerase III-promoter (Pol III).
- Pol III polymerase III-promoter
- a preferred Pol III promoter is, for example, a U1, a U6, or a U7 RNA promoter.
- the invention therefore also provides a viral-based vector, comprising a Pol III-promoter driven expression cassette for expression of one or more antisense sequences of the invention for inducing skipping of exon 43, exon 46, exon 50, exon 51, exon 52 or exon 53 of the human DMD pre-mRNA.
- a molecule or a vector expressing an antisense oligonucleotide of the invention can be incorporated into a pharmaceutically active mixture or composition by adding a pharmaceutically acceptable carrier.
- the invention provides a composition, preferably a pharmaceutical composition comprising a molecule comprising an antisense oligonucleotide according to the invention, and/or a viral-based vector expressing the antisense sequence(s) according to the invention and a pharmaceutically acceptable carrier.
- a preferred pharmaceutical composition comprises a molecule as defined herein and/or a vector as defined herein, and a pharmaceutical acceptable carrier or excipient, optionally combined with a molecule and/or a vector as defined herein which is able to induce skipping of exon 6, 7, 11, 17, 19, 21, 43, 44, 45, 50, 51, 52, 53, 55, 57, 59, 62, 63, 65, 66, 69, or 75 of the DMD pre-mRNA.
- Preferred molecules able to induce skipping of any of these exon are identified in any one of Tables 1 to 7.
- Preferred excipients include excipients capable of forming complexes, vesicles and/or liposomes that deliver such a molecule as defined herein, preferably an oligonucleotide complexed or trapped in a vesicle or liposome through a cell membrane. Many of these excipients are known in the art.
- Suitable excipients comprise polyethylenimine and derivatives, or similar cationic polymers, including polypropyleneimine or polyethylenimine copolymers (PECs) and derivatives, ExGen 500, synthetic amphiphils (SAINT-18), lipofectinTM, DOTAP and/or viral capsid proteins that are capable of self assembly into particles that can deliver such molecule, preferably an oligonucleotide as defined herein to a cell, preferably a muscle cell.
- excipients have been shown to efficiently deliver (oligonucleotide such as antisense) nucleic acids to a wide variety of cultured cells, including muscle cells. Their high transfection potential is combined with an excepted low to moderate toxicity in terms of overall cell survival. The ease of structural modification can be used to allow further modifications and the analysis of their further (in vivo) nucleic acid transfer characteristics and toxicity.
- Lipofectin represents an example of a liposomal transfection agent. It consists of two lipid components, a cationic lipid N-[1-(2,3 dioleoyloxy)propyl]-N,N,N-trimethylammonium chloride (DOTMA) (cp. DOTAP which is the methylsulfate salt) and a neutral lipid dioleoylphosphatidylethanolamine (DOPE). The neutral component mediates the intracellular release.
- DOTMA cationic lipid N-[1-(2,3 dioleoyloxy)propyl]-N,N,N-trimethylammonium chloride
- DOPE neutral lipid dioleoylphosphatidylethanolamine
- Another group of delivery systems are polymeric nanoparticles.
- Polycations such like diethylaminoethylaminoethyl (DEAE)-dextran, which are well known as DNA transfection reagent can be combined with butylcyanoacrylate (PBCA) and hexylcyanoacrylate (PHCA) to formulate cationic nanoparticles that can deliver a molecule or a compound as defined herein, preferably an oligonucleotide across cell membranes into cells.
- PBCA butylcyanoacrylate
- PHCA hexylcyanoacrylate
- the cationic peptide protamine offers an alternative approach to formulate a compound as defined herein, preferably an oligonucleotide as colloids.
- This colloidal nanoparticle system can form so called proticles, which can be prepared by a simple self-assembly process to package and mediate intracellular release of a compound as defined herein, preferably an oligonucleotide.
- the skilled person may select and adapt any of the above or other commercially available alternative excipients and delivery systems to package and deliver a compound as defined herein, preferably an oligonucleotide for use in the current invention to deliver said compound for the treatment of Duchenne Muscular Dystrophy or Becker Muscular Dystrophy in humans.
- a compound as defined herein preferably an oligonucleotide could be covalently or non-covalently linked to a targeting ligand specifically designed to facilitate the uptake in to the cell, cytoplasm and/or its nucleus.
- a targeting ligand specifically designed to facilitate the uptake in to the cell, cytoplasm and/or its nucleus.
- ligand could comprise (i) a compound (including but not limited to peptide(-like) structures) recognising cell, tissue or organ specific elements facilitating cellular uptake and/or (ii) a chemical compound able to facilitate the uptake in to cells and/or the intracellular release of an a compound as defined herein, preferably an oligonucleotide from vesicles, e.g. endosomes or lysosomes.
- a compound as defined herein, preferably an oligonucleotide are formulated in a medicament which is provided with at least an excipient and/or a targeting ligand for delivery and/or a delivery device of said compound to a cell and/or enhancing its intracellular delivery.
- the invention also encompasses a pharmaceutically acceptable composition comprising a compound as defined herein, preferably an oligonucleotide and further comprising at least one excipient and/or a targeting ligand for delivery and/or a delivery device of said compound to a cell and/or enhancing its intracellular delivery.
- a molecule or compound or oligonucleotide may not be formulated in one single composition or preparation. Depending on their identity, the skilled person will know which type of formulation is the most appropriate for each compound.
- an in vitro concentration of a molecule or an oligonucleotide as defined herein, which is ranged between 0.1 nM and 1 R M is used.
- the concentration used is ranged between 0.3 to 400 nM, even more preferably between 1 to 200 nM.
- a molecule or an oligonucleotide as defined herein may be used at a dose which is ranged between 0.1 and 20 mg/kg, preferably 0.5 and 10 mg/kg. If several molecules or oligonucleotides are used, these concentrations may refer to the total concentration of oligonucleotides or the concentration of each oligonucleotide added.
- the ranges of concentration of oligonucleotide(s) as given above are preferred concentrations for in vitro or ex vivo uses.
- the concentration of oligonucleotide(s) used may further vary and may need to be optimised any further.
- a compound preferably an oligonucleotide to be used in the invention to prevent, treat DMD or BMD are synthetically produced and administered directly to a cell, a tissue, an organ and/or patients in formulated form in a pharmaceutically acceptable composition or preparation.
- the delivery of a pharmaceutical composition to the subject is preferably carried out by one or more parenteral injections, e.g. intravenous and/or subcutaneous and/or intramuscular and/or intrathecal and/or intraventricular administrations, preferably injections, at one or at multiple sites in the human body.
- a preferred oligonucleotide as defined herein optionally comprising one or more nucleotide analogs or equivalents of the invention modulates splicing in one or more muscle cells, including heart muscle cells, upon systemic delivery.
- systemic delivery of an oligonucleotide comprising a specific nucleotide analog or equivalent might result in targeting a subset of muscle cells, while an oligonucleotide comprising a distinct nucleotide analog or equivalent might result in targeting of a different subset of muscle cells.
- oligonucleotide comprising a specific nucleotide analog or equivalent
- an oligonucleotide comprising a distinct nucleotide analog or equivalent might result in targeting a different subset of muscle cells. Therefore, in this embodiment, it is preferred to use a combination of oligonucleotides comprising different nucleotide analogs or equivalents for modulating splicing of the DMD mRNA in at least one type of muscle cells.
- a molecule or a viral-based vector for use as a medicament, preferably for modulating splicing of the DMD pre-mRNA, more preferably for promoting or inducing skipping of any of exon 43, 46, 50-53 as identified herein.
- the invention provides the use of an antisense oligonucleotide or molecule according to the invention, and/or a viral-based vector that expresses one or more antisense sequences according to the invention and/or a pharmaceutical composition, for modulating splicing of the DMD pre-mRNA.
- the splicing is preferably modulated in a human myogenic cell or muscle cell in vitro. More preferred is that splicing is modulated in a human muscle cell in vivo.
- the invention further relates to the use of the molecule as defined herein and/or the vector as defined herein and/or or the pharmaceutical composition as defined herein for modulating splicing of the DMD pre-mRNA or for the preparation of a medicament for the treatment of a DMD or BMD patient.
- the verb “to comprise” and its conjugations is used in its non-limiting sense to mean that items following the word are included, but items not specifically mentioned are not excluded.
- the verb “to consist” may be replaced by “to consist essentially of” meaning that a molecule or a viral-based vector or a composition as defined herein may comprise additional component(s) than the ones specifically identified, said additional component(s) not altering the unique characteristic of the invention.
- reference to an element by the indefinite article “a” or “an” does not exclude the possibility that more than one of the element is present, unless the context clearly requires that there be one and only one of the elements.
- the indefinite article “a” or “an” thus usually means “at least one”.
- AON design was based on (partly) overlapping open secondary structures of the target exon RNA as predicted by the m-fold program, on (partly) overlapping putative SR-protein binding sites as predicted by the ESE-finder software.
- AONs were synthesized by Prosensa Therapeutics B.V. (Leiden, Netherlands), and contain 2′-O-methyl RNA and full-length phosphorothioate (PS) backbones.
- Myotube cultures derived from a healthy individual (“human control”) (examples 1, 3, and 4; exon 43, 50, 52 skipping) or a DMD patient carrying an exon 45 deletion (example 2; exon 46 skipping) were processed as described previously (Aartsma-Rus et al., Neuromuscul. Disord. 2002; 12: S71-77 and Hum Mol Genet 2003; 12(8): 907-14).
- myotube cultures were transfected with 50 nM and 150 nM (example 2), 200nM and 500 nM (example 4) or 500nM only (examples 1 and 3) of each AON.
- Transfection reagent UNIFectylin Prosensa Therapeutics BV, Netherlands
- 2 ⁇ l UNIFectylin per ⁇ g AON.
- Exon skipping efficiencies were determined by nested RT-PCR analysis using primers in the exons flanking the targeted exons (43, 46, 50, 51, 52, or 53).
- PCR fragments were isolated from agarose gels for sequence verification. For quantification, the PCR products were analyzed using the DNA 1000 LabChips Kit on the Agilent 2100 bioanalyzer (Agilent Technologies, USA).
- a series of AONs targeting sequences within exon 43 were designed and transfected in healthy control myotube cultures. Subsequent RT-PCR and sequence analysis of isolated RNA demonstrated that almost all AONs targeting a continuous nucleotide stretch within exon 43 herein defined as SEQ ID NO 2, was indeed capable of inducing exon 43 skipping.
- PS237 SEQ ID NO: 65
- PS238 and PS240 are shown, inducing exon 43 skipping levels up to 13% and 36% respectively ( FIG. 1 ).
- the precise skipping of exon 43 was confirmed by sequence analysis of the novel smaller transcript fragments. No exon 43 skipping was observed in non-treated cells (NT).
- a series of AONs targeting sequences within exon 46 were designed and transfected in myotube cultures derived from a DMD patient carrying an exon 45 deletion in the DMD gene.
- antisense-induced exon 46 skipping would induce the synthesis of a novel, BMD-like dystrophin protein that may indeed alleviate one or more symptoms of the disease.
- Subsequent RT-PCR and sequence analysis of isolated RNA demonstrated that almost all AONs targeting a continuous nucleotide stretch within exon 46 herein defined as SEQ ID NO 3, was indeed capable of inducing exon 46 skipping, even at relatively low AON concentrations of 50 nM.
- PS182 (SEQ ID NO: 117) reproducibly induced highest levels of exon 46 skipping (up to 50% at 50 nM and 74% at 150 nM), as shown in FIG. 2 .
- PS177, PS179, and PS181 are shown, inducing exon 46 skipping levels up to 55%, 58% and 42% respectively at 150 nM ( FIG. 2 ).
- the precise skipping of exon 46 was confirmed by sequence analysis of the novel smaller transcript fragments. No exon 46 skipping was observed in non-treated cells (NT).
- a series of AONs targeting sequences within exon 50 were designed and transfected in healthy control myotube cultures. Subsequent RT-PCR and sequence analysis of isolated RNA demonstrated that almost all AONs targeting a continuous nucleotide stretch within exon 50 herein defined as SEQ ID NO 4, was indeed capable of inducing exon 50 skipping.
- PS248 SEQ ID NO: 127) reproducibly induced highest levels of exon 50 skipping (up to 35% at 500 nM), as shown in FIG. 3 .
- PS245, PS246, and PS247 are shown, inducing exon 50 skipping levels up to 14-16% at 500 nM ( FIG. 3 ).
- the precise skipping of exon 50 was confirmed by sequence analysis of the novel smaller transcript fragments. No exon 50 skipping was observed in non-treated cells (NT).
- a series of AONs targeting sequences within exon 51 were designed and transfected in healthy control myotube cultures. Subsequent RT-PCR and sequence analysis of isolated RNA demonstrated that almost all AONs targeting a continuous nucleotide stretch within exon 51 herein defined as SEQ ID NO 5, was indeed capable of inducing exon 51 skipping.
- the AON with SEQ ID NO 180 reproducibly induced highest levels of exon 51 skipping (not shown).
- a series of AONs targeting sequences within exon 52 were designed and transfected in healthy control myotube cultures. Subsequent RT-PCR and sequence analysis of isolated RNA demonstrated that almost all AONs targeting a continuous nucleotide stretch within exon 52 herein defined as SEQ ID NO 6, was indeed capable of inducing exon 52 skipping.
- PS236 SEQ ID NO: 299 reproducibly induced highest levels of exon 52 skipping (up to 88% at 200 nM and 91% at 500 nM), as shown in FIG. 4 .
- PS232 and AON 52-1 previously published by Aartsma-Rus et al.
- Oligonucleotides 2005 are shown, inducing exon 52 skipping at levels up to 59% and 10% respectively when applied at 500 nM ( FIG. 4 ).
- the precise skipping of exon 52 was confirmed by sequence analysis of the novel smaller transcript fragments. No exon 52 skipping was observed in non-treated cells (NT).
- a series of AONs targeting sequences within exon 53 were designed and transfected in healthy control myotube cultures. Subsequent RT-PCR and sequence analysis of isolated RNA demonstrated that almost all AONs targeting a continuous nucleotide stretch within exon 53 herein defined as SEQ ID NO 7, was indeed capable of inducing exon 53 skipping.
- the AON with SEQ ID NO 328 reproducibly induced highest levels of exon 53 skipping (not shown).
- FIG. 1 In human control myotubes, a series of AONs (PS237, PS238, and PS240; SEQ ID NO 65, 66, 16 respectively) targeting exon 43 was tested at 500 nM.
- FIG. 2 In myotubes from a DMD patient with an exon 45 deletion, a series of AONs (PS177, PS179, PS181, and PS182; SEQ ID NO 91, 70, 110, and 117 respectively) targeting exon 46 was tested at two different concentrations (50 and 150 nM). PS182 (SEQ ID NO 117) reproducibly induced highest levels of exon 46 skipping. (M: DNA size marker)
- FIG. 3 In human control myotubes, a series of AONs (PS245, PS246, PS247, and PS248; SEQ ID NO 167, 165, 166, and 127 respectively) targeting exon 50 was tested at 500 nM.
- PS248 SEQ ID NO 127) reproducibly induced highest levels of exon 50 skipping.
- M DNA size marker
- NT non-treated cells.
- FIG. 4 In human control myotubes, two novel AONs (PS232 and PS236; SEQ ID NO 246 and 299 respectively) targeting exon 52 were tested at two different concentrations (200 and 500 nM) and directly compared to a previously described AON (52-1).
- PS236 SEQ ID NO 299
- M DNA size marker
- NT non-treated cells
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Abstract
Description
- This application is a continuation of U.S. application Ser. No. 14/631,686 filed on Feb. 25, 2015 which is a continuation of U.S. application Ser. No. 13/094,571 filed Apr. 26, 2011, which is a continuation of International Application No. PCT/NL2009/050113, filed on Mar. 11, 2009, which claims priority to PCT/NL2008/050673, filed on Oct. 27, 2008, the contents of each of which are herein incorporated by reference in their entirety. The invention relates to the field of genetics, more specifically human genetics. The invention in particular relates to modulation of splicing of the human Duchenne Muscular Dystrophy pre-mRNA.
- The invention relates to the field of genetics, more specifically human genetics. The invention in particular relates to modulation of splicing of the human Duchenne Muscular Dystrophy pre-mRNA.
- Myopathies are disorders that result in functional impairment of muscles. Muscular dystrophy (MD) refers to genetic diseases that are characterized by progressive weakness and degeneration of skeletal muscles. Duchenne muscular dystrophy (DMD) and Becker muscular dystrophy (BMD) are the most common childhood forms of muscular dystrophy. They are recessive disorders and because the gene responsible for DMD and BMD resides on the X-chromosome, mutations mainly affect males with an incidence of about 1 in 3500 boys.
- DMD and BMD are caused by genetic defects in the DMD gene encoding dystrophin, a muscle protein that is required for interactions between the cytoskeleton and the extracellular matrix to maintain muscle fiber stability during contraction. DMD is a severe, lethal neuromuscular disorder resulting in a dependency on wheelchair support before the age of 12 and DMD patients often die before the age of thirty due to respiratory- or heart failure. In contrast, BMD patients often remain ambulatory until later in life, and have near normal life expectancies. DMD mutations in the DMD gene are characterized by frame shifting insertions or deletions or nonsense point mutations, resulting in the absence of functional dystrophin. BMD mutations in general keep the reading frame intact, allowing synthesis of a partly functional dystrophin.
- During the last decade, specific modification of splicing in order to restore the disrupted reading frame of the dystrophin transcript has emerged as a promising therapy for Duchenne muscular dystrophy (DMD) (van Ommen, van Deutekom, Aartsma-Rus, Curr Opin Mol Ther. 2008;10(2):140-9, Yokota, Duddy, Partidge, Acta Myol. 2007;26(3):179-84, van Deutekom et al., N Engl J Med. 2007;357(26):2677-86).
- Using antisense oligonucleotides (AONs) interfering with splicing signals the skipping of specific exons can be induced in the DMD pre-mRNA, thus restoring the open reading frame and converting the severe DMD into a milder BMD phenotype (van Deutekom et al. Hum Mol Genet. 2001; 10: 1547-54; Aartsma-Rus et al., Hum Mol Genet 2003; 12(8):907-14.). In vivo proof-of-concept was first obtained in the mdx mouse model, which is dystrophin-deficient due to a nonsense mutation in exon 23.
- Intramuscular and intravenous injections of AONs targeting the mutated exon 23 restored dystrophin expression for at least three months (Lu et al. Nat Med. 2003; 8: 1009-14; Lu et al., Proc Natl Acad Sci U S A. 2005;102(1):198-203). This was accompanied by restoration of dystrophin-associated proteins at the fiber membrane as well as functional improvement of the treated muscle. In vivo skipping of human exons has also been achieved in the hDMD mouse model, which contains a complete copy of the human DMD gene integrated in chromosome 5 of the mouse (Bremmer-Bout et al. Molecular Therapy. 2004; 10: 232-40; 't Hoen et al. J Biol Chem. 2008; 283: 5899-907).
- Recently, a first-in-man study was successfully completed where an AON inducing the skipping of
exon 51 was injected into a small area of the tibialis anterior muscle of four DMD patients. Novel dystrophin expression was observed in the majority of muscle fibers in all four patients treated, and the AON was safe and well tolerated (van Deutekom et al. N Engl J Med. 2007; 357: 2677-86). - In a first aspect, the present invention provides a method for inducing, and/or promoting skipping of at least one of
exons - Accordingly, a method is provided for inducing and/or promoting skipping of at least one of
exons - As defined herein a DMD pre-mRNA preferably means the pre-mRNA of a DMD gene of a DMD or BMD patient.
- A patient is preferably intended to mean a patient having DMD or BMD as later defined herein or a patient susceptible to develop DMD or BMD due to his or her genetic background. In the case of a DMD patient, an oligonucleotide used will preferably correct one mutation as present in the DMD gene of said patient and therefore will preferably create a DMD protein that will look like a BMD protein: said protein will preferably be a functional dystrophin as later defined herein. In the case of a BMD patient, an oligonucleotide as used will preferably correct one mutation as present in the BMD gene of said patient and therefore will preferably create a dystrophin which will be more functional than the dystrophin which was originally present in said BMD patient.
- Exon skipping refers to the induction in a cell of a mature mRNA that does not contain a particular exon that is normally present therein. Exon skipping is performed by providing a cell expressing the pre-mRNA of said mRNA with a molecule capable of interfering with essential sequences such as for example the splice donor of splice acceptor sequence that required for splicing of said exon, or a molecule that is capable of interfering with an exon inclusion signal that is required for recognition of a stretch of nucleotides as an exon to be included in the mRNA. The term pre-mRNA refers to a non-processed or partly processed precursor mRNA that is synthesized from a DNA template in the cell nucleus by transcription.
- Within the context of the invention, inducing and/or promoting skipping of an exon as indicated herein means that at least 1%, 10%, 20%, 30%, 40%,50%, 60%, 70%, 80%, 90% or more of the DMD mRNA in one or more (muscle) cells of a treated patient will not contain said exon. This is preferably assessed by PCR as described in the examples.
- Preferably, a method of the invention by inducing and/or promoting skipping of at least one of the following
exons - Providing a patient with a functional dystrophin protein and/or decreasing the production of an aberrant dystrophin protein in said patient is typically applied in a DMD patient. Increasing the production of a functional dystrophin is typically applied in a BMD patient.
- Therefore a preferred method is a method, wherein a patient or one or more cells of said patient is provided with a functional dystrophin protein and/or wherein the production of an aberrant dystrophin protein in said patient is decreased and/or wherein the production of a functional dystrophin is increased in said patient, wherein the level of said aberrant or functional dystrophin is assessed by comparison to the level of said dystrophin in said patient at the onset of the method.
- Decreasing the production of an aberrant dystrophin may be assessed at the mRNA level and preferably means that 99%, 90%, 80%, 70%, 60%, 50%, 40%, 30%, 20%, 10%, 5% or less of the initial amount of aberrant dystrophin mRNA, is still detectable by RT PCR. An aberrant dystrophin mRNA or protein is also referred to herein as a non-functional dystrophin mRNA or protein. A non functional dystrophin protein is preferably a dystrophin protein which is not able to bind actin and/or members of the DGC protein complex. A non-functional dystrophin protein or dystrophin mRNA does typically not have, or does not encode a dystrophin protein with an intact C-terminus of the protein.
- Increasing the production of a functional dystrophin in said patient or in a cell of said patient may be assessed at the mRNA level (by RT-PCR analysis) and preferably means that a detectable amount of a functional dystrophin mRNA is detectable by RT PCR. In another embodiment, 1%, 5%, 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90% or more of the detectable dystrophin mRNA is a functional dystrophin mRNA.
- Increasing the production of a functional dystrophin in said patient or in a cell of said patient may be assessed at the protein level (by immunofluorescence and western blot analyses) and preferably means that a detectable amount of a functional dystrophin protein is detectable by immunofluorescence or western blot analysis. In another embodiment, 1%, 5%, 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90% or more of the detectable dystrophin protein is a functional dystrophin protein.
- As defined herein, a functional dystrophin is preferably a wild type dystrophin corresponding to a protein having the amino acid sequence as identified in SEQ ID NO: 1. A functional dystrophin is preferably a dystrophin, which has an actin binding domain in its N terminal part (first 240 amino acids at the N terminus), a cystein-rich domain (amino acid 3361 till 3685) and a C terminal domain (last 325 amino acids at the C terminus) each of these domains being present in a wild type dystrophin as known to the skilled person. The amino acids indicated herein correspond to amino acids of the wild type dystrophin being represented by SEQ ID NO:1. In other words, a functional dystrophin is a dystrophin which exhibits at least to some extent an activity of a wild type dystrophin. “At least to some extent” preferably means at least 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90%, 95% or 100% of a corresponding activity of a wild type functional dystrophin. In this context, an activity of a functional dystrophin is preferably binding to actin and to the dystrophin-associated glycoprotein complex (DGC) (Aartsma-Rus A et al, (2006), Entries in the leiden Duchenne Muscular Dystrophy mutation database: an overview of mutation types and paradoxical cases that confirm the reading-frame rule, Muscle Nerve, 34: 135-144). Binding of dystrophin to actin and to the DGC complex may be visualized by either co-immunoprecipitation using total protein extracts or immunofluorescence analysis of cross-sections, from a muscle biopsy, as known to the skilled person.
- Individuals or patients suffering from Duchenne muscular dystrophy typically have a mutation in the gene encoding dystrophin that prevent synthesis of the complete protein, i.e of a premature stop prevents the synthesis of the C-terminus. In Becker muscular dystrophy the DMD gene also comprises a mutation compared tot the wild type gene but the mutation does typically not induce a premature stop and the C-terminus is typically synthesized. As a result a functional dystrophin protein is synthesized that has at least the same activity in kind as the wild type protein, not although not necessarily the same amount of activity. The genome of a BMD individual typically encodes a dystrophin protein comprising the N terminal part (first 240 amino acids at the N terminus), a cystein-rich domain (amino acid 3361 till 3685) and a C terminal domain (last 325 amino acids at the C terminus) but its central rod shaped domain may be shorter than the one of a wild type dystrophin (Aartsma-Rus A et al, (2006), Entries in the leiden Duchenne Muscular Dystrophy mutation database: an overview of mutation types and paradoxical cases that confirm the reading-frame rule, Muscle Nerve, 34: 135-144). Exon skipping for the treatment of DMD is typically directed to overcome a premature stop in the pre-mRNA by skipping an exon in the rod-shaped domain to correct the reading frame and allow synthesis of remainder of the dystrophin protein including the C-terminus, albeit that the protein is somewhat smaller as a result of a smaller rod domain. In a preferred embodiment, an individual having DMD and being treated by a method as defined herein will be provided a dystrophin which exhibits at least to some extent an activity of a wild type dystrophin. More preferably, if said individual is a Duchenne patient or is suspected to be a Duchenne patient, a functional dystrophin is a dystrophin of an individual having BMD: typically said dystrophin is able to interact with both actin and the DGC, but its central rod shaped domain may be shorter than the one of a wild type dystrophin (Aartsma-Rus A et al, (2006), Entries in the leiden Duchenne Muscular Dystrophy mutation database: an overview of mutation types and paradoxical cases that confirm the reading-frame rule, Muscle Nerve, 34: 135-144). The central rod-shaped domain of wild type dystrophin comprises 24 spectrin-like repeats (Aartsma-Rus A et al, (2006), Entries in the leiden Duchenne Muscular Dystrophy mutation database: an overview of mutation types and paradoxical cases that confirm the reading-frame rule, Muscle Nerve, 34: 135-144). For example, a central rod-shaped domain of a dystrophin as provided herein may comprise 5 to 23, 10 to 22 or 12 to 18 spectrin-like repeats as long as it can bind to actin and to DGC.
- A method of the invention may alleviate one or more characteristics of a myogenic or muscle cell of a patient or alleviate one or more symptoms of a DMD patient having a deletion including but not limited to exons 44, 44-46, 44-47, 44-48, 44-49, 44-51, 44-53 (correctable by exon 43 skipping), 19-45, 21-45, 43-45, 45, 47-54, 47-56 (correctable by exon 46 skipping), 51, 51-53, 51-55, 51-57 (correctable by exon 50 skipping), 13-50, 19-50, 29-50, 43-50, 45-50, 47-50, 48-50, 49-50, 50, 52 (correctable by exon 51 skipping), exons 8-51, 51, 53, 53-55, 53-57, 53-59, 53-60, (correctable by exon 52 skipping) and exons 10-52, 42-52, 43-52, 45-52, 47-52, 48-52, 49-52, 50-52, 52 (correctable by exon 53 skipping) in the DMD gene, occurring in a total of 68% of all DMD patients with a deletion (Aartsma-Rus et al., Hum. Mut. 2009).
- Alternatively, a method of the invention may improve one or more characteristics of a muscle cell of a patient or alleviate one or more symptoms of a DMD patient having small mutations in, or single exon duplications of
exon - Furthermore, for some patients the simultaneous skipping of one of more exons in addition to exon 43, exon 46 and/or exon 50-53 is required to restore the open reading frame, including patients with specific deletions, small (point) mutations, or double or multiple exon duplications, such as (but not limited to) a deletion of exons 44-50 requiring the co-skipping of exons 43 and 51, with a deletion of exons 46-50 requiring the co-skipping of exons 45 and 51, with a deletion of exons 44-52 requiring the co-skipping of exons 43 and 53, with a deletion of exons 46-52 requiring the co-skipping of exons 45 and 53, with a deletion of exons 51-54 requiring the co-skipping of exons 50 and 55, with a deletion of exons 53-54 requiring the co-skipping of exons 52 and 55, with a deletion of exons 53-56 requiring the co-skipping of exons 52 and 57, with a nonsense mutation in exon 43 or exon 44 requiring the co-skipping of exon 43 and 44, with a nonsense mutation in exon 45 or exon 46 requiring the co-skipping of exon 45 and 46, with a nonsense mutation in exon 50 or exon 51 requiring the co-skipping of exon 50 and 51, with a nonsense mutation in exon 51 or exon 52 requiring the co-skipping of exon 51 and 52, with a nonsense mutation in exon 52 or exon 53 requiring the co-skipping of exon 52 and 53, or with a double or multiple exon duplication involving exons 43, 46, 50, 51, 52, and/or 53.
- In a preferred method, the skipping of
exon 43 is induced, or the skipping ofexon 46 is induced, or the skipping ofexon 50 is induced or the skipping ofexon 51 is induced or the skipping ofexon 52 is induced or the skipping ofexon 53 is induced. An induction of the skipping of two of these exons is also encompassed by a method of the invention. - For example, preferably skipping of
exons - In a preferred method, one or more symptom(s) of a DMD or a BMD patient is/are alleviated and/or one or more characteristic(s) of one or more muscle cells from a DMD or a BMD patient is/are improved. Such symptoms or characteristics may be assessed at the cellular, tissue level or on the patient self
- An alleviation of one or more characteristics may be assessed by any of the following assays on a myogenic cell or muscle cell from a patient: reduced calcium uptake by muscle cells, decreased collagen synthesis, altered morphology, altered lipid biosynthesis, decreased oxidative stress, and/or improved muscle fiber function, integrity, and/or survival. These parameters are usually assessed using immunofluorescence and/or histochemical analyses of cross sections of muscle biopsies.
- The improvement of muscle fiber function, integrity and/or survival may be assessed using at least one of the following assays: a detectable decrease of creatine kinase in blood, a detectable decrease of necrosis of muscle fibers in a biopsy cross-section of a muscle suspected to be dystrophic, and/or a detectable increase of the homogeneity of the diameter of muscle fibers in a biopsy cross-section of a muscle suspected to be dystrophic. Each of these assays is known to the skilled person.
- Creatine kinase may be detected in blood as described in Hodgetts et al (Hodgetts S., et al, (2006), Neuromuscular Disorders, 16: 591-602.2006). A detectable decrease in creatine kinase may mean a decrease of 5%, 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90% or more compared to the concentration of creatine kinase in a same DMD or BMD patient before treatment.
- A detectable decrease of necrosis of muscle fibers is preferably assessed in a muscle biopsy, more preferably as described in Hodgetts et al (Hodgetts S., et al, (2006), Neuromuscular Disorders, 16: 591-602.2006) using biopsy cross-sections. A detectable decrease of necrosis may be a decrease of 5%, 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90% or more of the area wherein necrosis has been identified using biopsy cross-sections. The decrease is measured by comparison to the necrosis as assessed in a same DMD or BMD patient before treatment.
- A detectable increase of the homogeneity of the diameter of a muscle fiber is preferably assessed in a muscle biopsy cross-section, more preferably as described in Hodgetts et al (Hodgetts S., et al, (2006), Neuromuscular Disorders, 16: 591-602.2006).
- The increase is measured by comparison to the homogeneity of the diameter of a muscle fiber in a same DMD or BMD patient before treatment
- An alleviation of one or more symptoms may be assessed by any of the following assays on the patient self: prolongation of time to loss of walking, improvement of muscle strength, improvement of the ability to lift weight, improvement of the time taken to rise from the floor, improvement in the nine-meter walking time, improvement in the time taken for four-stairs climbing, improvement of the leg function grade, improvement of the pulmonary function, improvement of cardiac function, improvement of the quality of life. Each of these assays is known to the skilled person.
- As an example, the publication of Manzur at al (Manzur AY et al, (2008), Glucocorticoid corticosteroids for Duchenne muscular dystrophy (review), Wiley publishers, The Cochrane collaboration.) gives an extensive explanation of each of these assays. For each of these assays, as soon as a detectable improvement or prolongation of a parameter measured in an assay has been found, it will preferably mean that one or more symptoms of Duchenne Muscular Dystrophy or Becker Muscular Dystrophy has been alleviated in an individual using a method of the invention. Detectable improvement or prolongation is preferably a statistically significant improvement or prolongation as described in Hodgetts et al (Hodgetts S., et al, (2006), Neuromuscular Disorders,16: 591-602.2006). Alternatively, the alleviation of one or more symptom(s) of Duchenne Muscular Dystrophy or Becker Muscular Dystrophy may be assessed by measuring an improvement of a muscle fiber function, integrity and/or survival as later defined herein.
- A treatment in a method according to the invention may have a duration of at least one week, at least one month, at least several months, at least one year, at least 2, 3, 4, 5, 6 years or more.
- Each molecule or oligonucleotide or equivalent thereof as defined herein for use according to the invention may be suitable for direct administration to a cell, tissue and/or an organ in vivo of individuals affected by or at risk of developing DMD or BMD, and may be administered directly in vivo, ex vivo or in vitro. The frequency of administration of a molecule or an oligonucleotide or a composition of the invention may depend on several parameters such as the age of the patient, the mutation of the patient, the number of molecules (dose), the formulation of said molecule. The frequency may be ranged between at least once in a two weeks, or three weeks or four weeks or five weeks or a longer time period.
- A molecule or oligonucleotide or equivalent thereof can be delivered as is to a cell.
- When administering said molecule, oligonucleotide or equivalent thereof to an individual, it is preferred that it is dissolved in a solution that is compatible with the delivery method. For intravenous, subcutaneous, intramuscular, intrathecal and/or intraventricular administration it is preferred that the solution is a physiological salt solution. Particularly preferred for a method of the invention is the use of an excipient that will further enhance delivery of said molecule, oligonucleotide or functional equivalent thereof as defined herein, to a cell and into a cell, preferably a muscle cell.
- Preferred excipientare defined in the section entitled “pharmaceutical composition”.
- In a preferred method of the invention, an additional molecule is used which is able to induce and/or promote skipping of another exon of the DMD pre-mRNA of a patient.
- Preferably, the second exon is selected from:
exon - Molecules which can be used are depicted in any one of Table 1 to 7. This way, inclusion of two or more exons of a DMD pre-mRNA in mRNA produced from this pre-mRNA is prevented. This embodiment is further referred to as double- or multi-exon skipping (Aartsma-Rus A, Janson AA, Kaman WE, et al. Antisense-induced multiexon skipping for Duchenne muscular dystrophy makes more sense. Am J Hum Genet 2004;74(1):83-92, Aartsma-Rus A, Kaman W E, Weij R, den Dunnen J T, van Ommen G J, van Deutekom J C. Exploring the frontiers of therapeutic exon skipping for Duchenne muscular dystrophy by double targeting within one or multiple exons. Mol Ther 2006;14(3):401-7). In most cases double-exon skipping results in the exclusion of only the two targeted exons from the DMD pre-mRNA. However, in other cases it was found that the targeted exons and the entire region in between said exons in said pre-mRNA were not present in the produced mRNA even when other exons (intervening exons) were present in such region. This multi-skipping was notably so for the combination of oligonucleotides derived from the DMD gene, wherein one oligonucleotide for exon 45 and one oligonucleotide for
exon 51 was added to a cell transcribing the DMD gene. Such a set-up resulted in mRNA being produced that did not contain exons 45 to 51. Apparently, the structure of the pre-mRNA in the presence of the mentioned oligonucleotides was such that the splicing machinery was stimulated to connectexons - It is possible to specifically promote the skipping of also the intervening exons by providing a linkage between the two complementary oligonucleotides. Hence, in one embodiment stretches of nucleotides complementary to at least two dystrophin exons are separated by a linking moiety. The at least two stretches of nucleotides are thus linked in this embodiment so as to form a single molecule.
- In case, more than one compounds or molecules are used in a method of the invention, said compounds can be administered to an individual in any order. In one embodiment, said compounds are administered simultaneously (meaning that said compounds are administered within 10 hours, preferably within one hour). This is however not necessary. In another embodiment, said compounds are administered sequentially.
- In a second aspect, there is provided a molecule for use in a method as described in the previous section entitled “Method”. A molecule as defined herein is preferably an oligonucleotide or antisense oligonucleotide (AON).
- It was found by the present investigators that any of
exon - In a preferred embodiment, a molecule or an oligonucleotide of the invention which comprises a sequence that is complementary to a part of any of
exon - A preferred molecule to be used in a method of the invention binds or is complementary to a continuous stretch of at least 8 nucleotides within one of the following nucleotide sequences selected from:
-
(SEQ ID NO: 2) 5′-AGAUAGUCUACAACAAAGCUCAGGUCGGAUUGACAUUAUUCAU AGCAAGAAGACAGCAGCAUUGCAAAGUGCAACGCCUGUGG-3′ for skipping of exon 43;(SEQ ID NO: 3) 5′-UUAUGGUUGGAGGAAGCAGAUAACAUUGCUAGUAUCCCACUUG AACCUGGAAAAGAGCAGCAACUAAAAGAAAAGC-3′ for skipping of exon 46;(SEQ ID NO: 4) 5′-GGCGGTAAACCGUUUACUUCAAGAGCUGAGGGCAAAGCAGCCUG ACCUAGC UCCUGGACUGACCACUAUUGG-3′ for skipping of exon 50;(SEQ ID NO: 5) 5′-CUCCUACUCAGACUGUUACUCUGGUGACACAACCUGUGGUUACU AAGGAAACUGCCAUC UCCAAACUAGAAAUGCCAUCUUCCUUGAUG UUGGAGGUAC-3′ for skipping of exon 51;(SEQ ID NO: 6) 5′-AUGCAGGAUUUGGAACAGAGGCGUCCCCAGUUGGAAGAACUCAU UACCGCUGCCCAAAAUUUGAAAAACAAGACCAGCAAUCAAGAGGCU-3′ for skipping of exon 52,and (SEQ ID NO: 7) 5′-AAAUGUUAAAGGAUUCAACACAAUGGCUGGAAGCUAAGGAAGAA GCUGAGCAGGUCUUAGGACAGGCCAGAG-3′ for skipping of exon 53. - Of the numerous molecules that theoretically can be prepared to bind to the continuous nucleotide stretches as defined by SEQ ID NO 2-7 within one of said exons, the invention provides distinct molecules that can be used in a method for efficiently skipping of at least one of
exon 43,exon 46 and/or exon 50-53. Although the skipping effect can be addressed to the relatively high density of putative SR protein binding sites within said stretches, there could be other parameters involved that favor uptake of the molecule or other, intracellular parameters such as thermodynamic, kinetic, or structural characteristics of the hybrid duplex. - It was found that a molecule that binds to a continuous stretch comprised within or consisting of any of SEQ ID NO 2-7 results in highly efficient skipping of
exon 43,exon 46 and/or exon 50- 53 respectively in a cell and/or in a patient provided with this molecule. Therefore, in a preferred embodiment, a method is provided wherein a molecule binds to a continuous stretch of at least 8, 10, 12, 15, 18, 20, 25, 30, 35, 40, 45, 50 nucleotides within SEQ ID NO 2-7. - In a preferred embodiment for inducing and/or promoting the skipping of any of
exon 43,exon 46 and/or exon 50-53, the invention provides a molecule comprising or consisting of an antisense nucleotide sequence selected from the antisense nucleotide sequences depicted in any of Tables 1 to 6. A molecule of the invention preferably comprises or consist of the antisense nucleotide sequence ofSEQ ID NO 16, SEQ ID NO 65, SEQ ID NO 70,SEQ ID NO 91, SEQ ID NO 110, SEQ ID NO 117, SEQ ID NO 127, SEQ ID NO 165, SEQ ID NO 166, SEQ ID NO 167, SEQ ID NO 246, SEQ ID NO 299, SEQ ID NO:357. - A preferred molecule of the invention comprises a nucleotide-based or nucleotide or an antisense oligonucleotide sequence of between 8 and 50 nucleotides or bases, more preferred between 10 and 50 nucleotides, more preferred between 20 and 40 nucleotides, more preferred between 20 and 30 nucleotides, such as 20 nucleotides, 21 nucleotides, 22 nucleotides, 23 nucleotides, 24 nucleotides, 25 nucleotides, 26 nucleotides, 27 nucleotides, 28 nucleotides, 29 nucleotides, 30 nucleotides, 31 nucleotides, 32 nucleotides, 33 nucleotides, 34 nucleotides, 35 nucleotides, 36 nucleotides, 37 nucleotides, 38 nucleotides, 39 nucleotides, 40 nucleotides, 41 nucleotides, 42 nucleotides, 43 nucleotides, 44 nucleotides, 45 nucleotides, 46 nucleotides, 47 nucleotides, 48 nucleotides, 49 nucleotides or 50 nucleotides.
- A most preferred molecule of the invention comprises a nucleotide-based sequence of 25 nucleotides.
- Furthermore, none of the indicated sequences is derived from conserved parts of splice-junction sites. Therefore, said molecule is not likely to mediate differential splicing of other exons from the DMD pre-mRNA or exons from other genes.
- In one embodiment, a molecule of the invention is a compound molecule that binds to the specified sequence, or a protein such as an RNA-binding protein or a non-natural zinc-finger protein that has been modified to be able to bind to the corresponding nucleotide sequence on a DMD pre-RNA molecule. Methods for screening compound molecules that bind specific nucleotide sequences are, for example, disclosed in PCT/NL01/00697 and U.S. Pat. No. 6,875,736, which are herein incorporated by reference. Methods for designing RNA-binding Zinc-finger proteins that bind specific nucleotide sequences are disclosed by Friesen and Darby, Nature Structural Biology 5: 543-546 (1998) which is herein incorporated by reference.
- A preferred molecule of the invention binds to at least part of the sequence of SEQ ID NO 2:5′-AGAUAGUCUACAACAAAGCUCAGGUCGGAUUGACAUUAUUCAU AGCAAGAAGACAGCAGCAUUGCAAAGUGCAACGCCUGUGG-3′ which is present in
exon 43 of the DMD gene. More preferably, the invention provides a molecule comprising or consisting of the antisense nucleotide sequence of SEQ ID NO 8 to SEQ ID NO 69. - In an even more preferred embodiment, the invention provides a molecule comprising or consisting of the antisense nucleotide sequence of
SEQ ID NO 16 and/or SEQ ID NO 65. - In a most preferred embodiment, the invention provides a molecule comprising or consisting of the antisense nucleotide sequence of SEQ ID NO 65. It was found that this molecule is very efficient in modulating splicing of
exon 43 of the DMD pre-mRNA in a muscle cell and/or in a patient. - Another preferred molecule of the invention binds to at least part of the sequence of SEQ ID NO 3: 5′-UUAUGGUUGGAGGAAGCAGAUAACAUUGCUAGUAUCCCACUUG AACCUGGAAAAGAGCAGCAACUAAAAGAAAAGC-3′ which is present in
exon 46 of the DMD gene. More preferably, the invention provides a molecule comprising or consisting of the antisense nucleotide sequence of SEQ ID NO 70 to SEQ ID NO 122. - In an even more preferred embodiment, the invention provides a molecule comprising or consisting of the antisense nucleotide sequence of SEQ ID NO 70,
SEQ ID NO 91, SEQ ID NO 110, and/or SEQ ID NO117. - In a most preferred embodiment, the invention provides a molecule comprising or consisting of the antisense nucleotide sequence of SEQ ID NO 117. It was found that this molecule is very efficient in modulating splicing of
exon 46 of the DMD pre-mRNA in a muscle cell or in a patient. - Another preferred molecule of the invention binds to at least part of the sequence of SEQ ID NO 4: 5′-GGCGGTAAACCGUUUACUUCAAGAGCU GAGGGCAAAGCAGCCUG ACCUAGCUCCUGGACUGACCACUAUUGG-3′ which is present in
exon 50 of the DMD gene. More preferably, the invention provides a molecule comprising or consisting of the antisense nucleotide sequence of SEQ ID NO 123 to SEQ ID NO 167 and/or SEQ ID NO 529 to SEQ ID NO 535. - In an even more preferred embodiment, the invention provides a molecule comprising or consisting of the antisense nucleotide sequence of SEQ ID NO 127, or SEQ ID NO 165, or SEQ ID NO 166 and/or SEQ ID NO 167.
- In a most preferred embodiment, the invention provides a molecule comprising or consisting of the antisense nucleotide sequence of SEQ ID NO 127. It was found that this molecule is very efficient in modulating splicing of
exon 50 of the DMD pre-mRNA in a muscle cell and/or in a patient. - Another preferred molecule of the invention binds to at least part of the sequence of SEQ ID NO 5: 5′-CUCCUACUCAGACUGUUACUCUGGUGACACAACCUGUGGUUACU AAGGAAACUGCCAUC UCCAAACUAGAAAUGCCAUCUUCCUUGAUG UUGGAGGUAC-3′ which is present in
exon 51 of the DMD gene. More preferably, the invention provides a molecule comprising or consisting of the antisense nucleotide sequence of SEQ ID NO 168 to SEQ ID NO 241. - Another preferred molecule of the invention binds to at least part of the sequence of SEQ ID NO 6: 5′-AUGCAGGAUUUGGAACAGAGGCGUCCCCAGUUGGAAGAACUCAU UACCGCUGCCCAAAAUUUGAAAAACAAGACCAGCAAUCAAGAGGCU-3′ which is present in
exon 52 of the DMD gene. More preferably, the invention provides a molecule comprising or consisting of the antisense nucleotide sequence of SEQ ID NO 242 to SEQ ID NO 310. In an even more preferred embodiment, the invention provides a molecule comprising or consisting of the antisense nucleotide sequence of SEQ ID NO 246 and/or SEQ ID NO 299. In a most preferred embodiment, the invention provides a molecule comprising or consisting of the antisense nucleotide sequence of SEQ ID NO 299. It was found that this molecule is very efficient in modulating splicing ofexon 52 of the DMD pre-mRNA in a muscle cell and/or in a patient. - Another preferred molecule of the invention binds to at least part of the sequence of SEQ ID NO 7: 5′-AAAUGUUAAAGGAUUCAACACAAUGGCUGGAAGCUAAGGAAGAA GCUGAGCAGGUCUUAGGACAGGCCAGAG-3′ which is present in
exon 53 of the DMD gene. More preferably, the invention provides a molecule comprising or consisting of the antisense nucleotide sequence of SEQ ID NO 311 to SEQ ID NO 358. - In a most preferred embodiment, the invention provides a molecule comprising or consisting of the antisense nucleotide sequence of SEQ ID NO 357. It was found that this molecule is very efficient in modulating splicing of
exon 53 of the DMD pre-mRNA in a muscle cell and/or in a patient. - A nucleotide sequence of a molecule of the invention may contain RNA residues, or one or more DNA residues, and/or one or more nucleotide analogues or equivalents, as will be further detailed herein below.
- It is preferred that a molecule of the invention comprises one or more residues that are modified to increase nuclease resistance, and/or to increase the affinity of the antisense nucleotide for the target sequence. Therefore, in a preferred embodiment, the antisense nucleotide sequence comprises at least one nucleotide analogue or equivalent, wherein a nucleotide analogue or equivalent is defined as a residue having a modified base, and/or a modified backbone, and/or a non-natural internucleoside linkage, or a combination of these modifications.
- In a preferred embodiment, the nucleotide analogue or equivalent comprises a modified backbone. Examples of such backbones are provided by morpholino backbones, carbamate backbones, siloxane backbones, sulfide, sulfoxide and sulfone backbones, formacetyl and thioformacetyl backbones, methyleneformacetyl backbones, riboacetyl backbones, alkene containing backbones, sulfamate, sulfonate and sulfonamide backbones, methyleneimino and methylenehydrazino backbones, and amide backbones.
- Phosphorodiamidate morpholino oligomers are modified backbone oligonucleotides that have previously been investigated as antisense agents. Morpholino oligonucleotides have an uncharged backbone in which the deoxyribose sugar of DNA is replaced by a six membered ring and the phosphodiester linkage is replaced by a phosphorodiamidate linkage. Morpholino oligonucleotides are resistant to enzymatic degradation and appear to function as antisense agents by arresting translation or interfering with pre-mRNA splicing rather than by activating RNase H. Morpholino oligonucleotides have been successfully delivered to tissue culture cells by methods that physically disrupt the cell membrane, and one study comparing several of these methods found that scrape loading was the most efficient method of delivery; however, because the morpholino backbone is uncharged, cationic lipids are not effective mediators of morpholino oligonucleotide uptake in cells. A recent report demonstrated triplex formation by a morpholino oligonucleotide and, because of the non-ionic backbone, these studies showed that the morpholino oligonucleotide was capable of triplex formation in the absence of magnesium.
- It is further preferred that that the linkage between the residues in a backbone do not include a phosphorus atom, such as a linkage that is formed by short chain alkyl or cycloalkyl internucleoside linkages, mixed heteroatom and alkyl or cycloalkyl internucleoside linkages, or one or more short chain heteroatomic or heterocyclic internucleoside linkages.
- A preferred nucleotide analogue or equivalent comprises a Peptide Nucleic Acid (PNA), having a modified polyamide backbone (Nielsen, et al. (1991) Science 254, 1497-1500). PNA-based molecules are true mimics of DNA molecules in terms of base-pair recognition. The backbone of the PNA is composed of N-(2-aminoethyl)-glycine units linked by peptide bonds, wherein the nucleobases are linked to the backbone by methylene carbonyl bonds. An alternative backbone comprises a one-carbon extended pyrrolidine PNA monomer (Govindaraju and Kumar (2005) Chem. Commun, 495-497). Since the backbone of a PNA molecule contains no charged phosphate groups, PNA-RNA hybrids are usually more stable than RNA-RNA or RNA-DNA hybrids, respectively (Egholm et al (1993) Nature 365, 566-568).
- A further preferred backbone comprises a morpholino nucleotide analog or equivalent, in which the ribose or deoxyribose sugar is replaced by a 6-membered morpholino ring.
- A most preferred nucleotide analog or equivalent comprises a phosphorodiamidate morpholino oligomer (PMO), in which the ribose or deoxyribose sugar is replaced by a 6-membered morpholino ring, and the anionic phosphodiester linkage between adjacent morpholino rings is replaced by a non-ionic phosphorodiamidate linkage.
- In yet a further embodiment, a nucleotide analogue or equivalent of the invention comprises a substitution of one of the non-bridging oxygens in the phosphodiester linkage. This modification slightly destabilizes base-pairing but adds significant resistance to nuclease degradation. A preferred nucleotide analogue or equivalent comprises phosphorothioate, chiral phosphorothioate, phosphorodithioate, phosphotriester, aminoalkylphosphotriester, H-phosphonate, methyl and other alkyl phosphonate including 3′-alkylene phosphonate, 5′-alkylene phosphonate and chiral phosphonate, phosphinate, phosphoramidate including 3′-amino phosphoramidate and aminoalkylphosphoramidate, thionophosphoramidate, thionoalkylphosphonate, thionoalkylphosphotriester, selenophosphate or boranophosphate.
- A further preferred nucleotide analogue or equivalent of the invention comprises one or more sugar moieties that are mono- or disubstituted at the 2′, 3′ and/or 5′ position such as a —OH; —F; substituted or unsubstituted, linear or branched lower (C1-C10) alkyl, alkenyl, alkynyl, alkaryl, allyl, aryl, or aralkyl, that may be interrupted by one or more heteroatoms; O-, S-, or N-alkyl; O-, S-, or N-alkenyl; O-, S- or N-alkynyl; O-, S-, or N-allyl; O-alkyl-O-alkyl, -methoxy, -aminopropoxy; -aminoxy; methoxyethoxy; -dimethylaminooxyethoxy; and -dimethylaminoethoxyethoxy. The sugar moiety can be a pyranose or derivative thereof, or a deoxypyranose or derivative thereof, preferably a ribose or a derivative thereof, or a deoxyribose or a derivative thereof. Such preferred derivatized sugar moieties comprise Locked Nucleic Acid (LNA), in which the 2′-carbon atom is linked to the 3′ or 4′ carbon atom of the sugar ring thereby forming a bicyclic sugar moiety. A preferred LNA comprises 2′-O,4′-C-ethylene-bridged nucleic acid (Morita et al. 2001. Nucleic Acid Res Supplement No. 1: 241-242). These substitutions render the nucleotide analogue or equivalent RNase H and nuclease resistant and increase the affinity for the target RNA.
- It is understood by a skilled person that it is not necessary for all positions in an antisense oligonucleotide to be modified uniformly. In addition, more than one of the aforementioned analogues or equivalents may be incorporated in a single antisense oligonucleotide or even at a single position within an antisense oligonucleotide. In certain embodiments, an antisense oligonucleotide of the invention has at least two different types of analogues or equivalents.
- A preferred antisense oligonucleotide according to the invention comprises a 2′-O alkyl phosphorothioate antisense oligonucleotide, such as 2′-O-methyl modified ribose (RNA), 2′-O-ethyl modified ribose, 2′-O-propyl modified ribose, and/or substituted derivatives of these modifications such as halogenated derivatives.
- A most preferred antisense oligonucleotide according to the invention comprises of 2′-O-methyl phosphorothioate ribose.
- A functional equivalent of a molecule of the invention may be defined as an oligonucleotide as defined herein wherein an activity of said functional equivalent is retained to at least some extent. Preferably, an activity of said functional equivalent is inducing
exon exon - It will be understood by a skilled person that distinct antisense oligonucleotides can be combined for efficiently skipping any of
exon 43,exon 46,exon 50,exon 51,exon 52 and/orexon 53 of the human DMD pre-mRNA. It is encompassed by the present invention to use one, two, three, four, five or more oligonucleotides for skipping one of said exons (i.e. exon, 43, 46, 50, 51, 52, or 53). It is also encompassed to use at least two oligonucleotides for skipping at least two, of said exons. Preferably two of said exons are skipped. More preferably, these two exons are: -
- 43 and 51, or
- 43 and 53, or
- 50 and 51, or
- 51 and 52, or
- 52 and 53.
- The skilled person will know which combination of exons is preferred to be skipped depending on the type, the number and the location of the mutation present in a DMD or BMD patient.
- An antisense oligonucleotide can be linked to a moiety that enhances uptake of the antisense oligonucleotide in cells, preferably muscle cells. Examples of such moieties are cholesterols, carbohydrates, vitamins, biotin, lipids, phospholipids, cell-penetrating peptides including but not limited to antennapedia, TAT, transportan and positively charged amino acids such as oligoarginine, poly-arginine, oligolysine or polylysine, antigen-binding domains such as provided by an antibody, a Fab fragment of an antibody, or a single chain antigen binding domain such as a cameloid single domain antigen-binding domain.
- A preferred antisense oligonucleotide comprises a peptide-linked PMO.
- A preferred antisense oligonucleotide comprising one or more nucleotide analogs or equivalents of the invention modulates splicing in one or more muscle cells, including heart muscle cells, upon systemic delivery. In this respect, systemic delivery of an antisense oligonucleotide comprising a specific nucleotide analog or equivalent might result in targeting a subset of muscle cells, while an antisense oligonucleotide comprising a distinct nucleotide analog or equivalent might result in targeting of a different subset of muscle cells. Therefore, in one embodiment it is preferred to use a combination of antisense oligonucleotides comprising different nucleotide analogs or equivalents for inducing skipping of
exon - A cell can be provided with a molecule capable of interfering with essential sequences that result in highly efficient skipping of
exon 43,exon 46,exon 50,exon 51,exon 52 orexon 53 of the human DMD pre-mRNA by plasmid-derived antisense oligonucleotide expression or viral expression provided by adenovirus- or adeno-associated virus-based vectors. In a preferred embodiment, there is provided a viral-based expression vector comprising an expression cassette that drives expression of a molecule as identified herein. Expression is preferably driven by a polymerase III promoter, such as a U1, a U6, or a U7 RNA promoter. A muscle or myogenic cell can be provided with a plasmid for antisense oligonucleotide expression by providing the plasmid in an aqueous solution. Alternatively, a plasmid can be provided by transfection using known transfection agentia such as, for example, LipofectAMINE™ 2000 (Invitrogen) or polyethyleneimine (PEI; ExGen500 (MBI Fermentas)), or derivatives thereof. - One preferred antisense oligonucleotide expression system is an adenovirus associated virus (AAV)-based vector. Single chain and double chain AAV-based vectors have been developed that can be used for prolonged expression of small antisense nucleotide sequences for highly efficient skipping of
exon - A preferred AAV-based vector comprises an expression cassette that is driven by a polymerase III-promoter (Pol III). A preferred Pol III promoter is, for example, a U1, a U6, or a U7 RNA promoter.
- The invention therefore also provides a viral-based vector, comprising a Pol III-promoter driven expression cassette for expression of one or more antisense sequences of the invention for inducing skipping of
exon 43,exon 46,exon 50,exon 51,exon 52 orexon 53 of the human DMD pre-mRNA. - If required, a molecule or a vector expressing an antisense oligonucleotide of the invention can be incorporated into a pharmaceutically active mixture or composition by adding a pharmaceutically acceptable carrier.
- Therefore, in a further aspect, the invention provides a composition, preferably a pharmaceutical composition comprising a molecule comprising an antisense oligonucleotide according to the invention, and/or a viral-based vector expressing the antisense sequence(s) according to the invention and a pharmaceutically acceptable carrier.
- A preferred pharmaceutical composition comprises a molecule as defined herein and/or a vector as defined herein, and a pharmaceutical acceptable carrier or excipient, optionally combined with a molecule and/or a vector as defined herein which is able to induce skipping of
exon - Preferred excipients include excipients capable of forming complexes, vesicles and/or liposomes that deliver such a molecule as defined herein, preferably an oligonucleotide complexed or trapped in a vesicle or liposome through a cell membrane. Many of these excipients are known in the art. Suitable excipients comprise polyethylenimine and derivatives, or similar cationic polymers, including polypropyleneimine or polyethylenimine copolymers (PECs) and derivatives,
ExGen 500, synthetic amphiphils (SAINT-18), lipofectin™, DOTAP and/or viral capsid proteins that are capable of self assembly into particles that can deliver such molecule, preferably an oligonucleotide as defined herein to a cell, preferably a muscle cell. Such excipients have been shown to efficiently deliver (oligonucleotide such as antisense) nucleic acids to a wide variety of cultured cells, including muscle cells. Their high transfection potential is combined with an excepted low to moderate toxicity in terms of overall cell survival. The ease of structural modification can be used to allow further modifications and the analysis of their further (in vivo) nucleic acid transfer characteristics and toxicity. - Lipofectin represents an example of a liposomal transfection agent. It consists of two lipid components, a cationic lipid N-[1-(2,3 dioleoyloxy)propyl]-N,N,N-trimethylammonium chloride (DOTMA) (cp. DOTAP which is the methylsulfate salt) and a neutral lipid dioleoylphosphatidylethanolamine (DOPE). The neutral component mediates the intracellular release. Another group of delivery systems are polymeric nanoparticles.
- Polycations such like diethylaminoethylaminoethyl (DEAE)-dextran, which are well known as DNA transfection reagent can be combined with butylcyanoacrylate (PBCA) and hexylcyanoacrylate (PHCA) to formulate cationic nanoparticles that can deliver a molecule or a compound as defined herein, preferably an oligonucleotide across cell membranes into cells.
- In addition to these common nanoparticle materials, the cationic peptide protamine offers an alternative approach to formulate a compound as defined herein, preferably an oligonucleotide as colloids. This colloidal nanoparticle system can form so called proticles, which can be prepared by a simple self-assembly process to package and mediate intracellular release of a compound as defined herein, preferably an oligonucleotide. The skilled person may select and adapt any of the above or other commercially available alternative excipients and delivery systems to package and deliver a compound as defined herein, preferably an oligonucleotide for use in the current invention to deliver said compound for the treatment of Duchenne Muscular Dystrophy or Becker Muscular Dystrophy in humans.
- In addition, a compound as defined herein, preferably an oligonucleotide could be covalently or non-covalently linked to a targeting ligand specifically designed to facilitate the uptake in to the cell, cytoplasm and/or its nucleus. Such ligand could comprise (i) a compound (including but not limited to peptide(-like) structures) recognising cell, tissue or organ specific elements facilitating cellular uptake and/or (ii) a chemical compound able to facilitate the uptake in to cells and/or the intracellular release of an a compound as defined herein, preferably an oligonucleotide from vesicles, e.g. endosomes or lysosomes.
- Therefore, in a preferred embodiment, a compound as defined herein, preferably an oligonucleotide are formulated in a medicament which is provided with at least an excipient and/or a targeting ligand for delivery and/or a delivery device of said compound to a cell and/or enhancing its intracellular delivery. Accordingly, the invention also encompasses a pharmaceutically acceptable composition comprising a compound as defined herein, preferably an oligonucleotide and further comprising at least one excipient and/or a targeting ligand for delivery and/or a delivery device of said compound to a cell and/or enhancing its intracellular delivery.
- It is to be understood that a molecule or compound or oligonucleotide may not be formulated in one single composition or preparation. Depending on their identity, the skilled person will know which type of formulation is the most appropriate for each compound.
- In a preferred embodiment, an in vitro concentration of a molecule or an oligonucleotide as defined herein, which is ranged between 0.1 nM and 1 RM is used.
- More preferably, the concentration used is ranged between 0.3 to 400 nM, even more preferably between 1 to 200 nM. A molecule or an oligonucleotide as defined herein may be used at a dose which is ranged between 0.1 and 20 mg/kg, preferably 0.5 and 10 mg/kg. If several molecules or oligonucleotides are used, these concentrations may refer to the total concentration of oligonucleotides or the concentration of each oligonucleotide added. The ranges of concentration of oligonucleotide(s) as given above are preferred concentrations for in vitro or ex vivo uses. The skilled person will understand that depending on the oligonucleotide(s) used, the target cell to be treated, the gene target and its expression levels, the medium used and the transfection and incubation conditions, the concentration of oligonucleotide(s) used may further vary and may need to be optimised any further.
- More preferably, a compound preferably an oligonucleotide to be used in the invention to prevent, treat DMD or BMD are synthetically produced and administered directly to a cell, a tissue, an organ and/or patients in formulated form in a pharmaceutically acceptable composition or preparation. The delivery of a pharmaceutical composition to the subject is preferably carried out by one or more parenteral injections, e.g. intravenous and/or subcutaneous and/or intramuscular and/or intrathecal and/or intraventricular administrations, preferably injections, at one or at multiple sites in the human body.
- A preferred oligonucleotide as defined herein optionally comprising one or more nucleotide analogs or equivalents of the invention modulates splicing in one or more muscle cells, including heart muscle cells, upon systemic delivery. In this respect, systemic delivery of an oligonucleotide comprising a specific nucleotide analog or equivalent might result in targeting a subset of muscle cells, while an oligonucleotide comprising a distinct nucleotide analog or equivalent might result in targeting of a different subset of muscle cells.
- In this respect, systemic delivery of an oligonucleotide comprising a specific nucleotide analog or equivalent might result in targeting a subset of muscle cells, while an oligonucleotide comprising a distinct nucleotide analog or equivalent might result in targeting a different subset of muscle cells. Therefore, in this embodiment, it is preferred to use a combination of oligonucleotides comprising different nucleotide analogs or equivalents for modulating splicing of the DMD mRNA in at least one type of muscle cells.
- In a preferred embodiment, there is provided a molecule or a viral-based vector for use as a medicament, preferably for modulating splicing of the DMD pre-mRNA, more preferably for promoting or inducing skipping of any of
exon - In yet a further aspect, the invention provides the use of an antisense oligonucleotide or molecule according to the invention, and/or a viral-based vector that expresses one or more antisense sequences according to the invention and/or a pharmaceutical composition, for modulating splicing of the DMD pre-mRNA. The splicing is preferably modulated in a human myogenic cell or muscle cell in vitro. More preferred is that splicing is modulated in a human muscle cell in vivo. Accordingly, the invention further relates to the use of the molecule as defined herein and/or the vector as defined herein and/or or the pharmaceutical composition as defined herein for modulating splicing of the DMD pre-mRNA or for the preparation of a medicament for the treatment of a DMD or BMD patient.
- In this document and in its claims, the verb “to comprise” and its conjugations is used in its non-limiting sense to mean that items following the word are included, but items not specifically mentioned are not excluded. In addition the verb “to consist” may be replaced by “to consist essentially of” meaning that a molecule or a viral-based vector or a composition as defined herein may comprise additional component(s) than the ones specifically identified, said additional component(s) not altering the unique characteristic of the invention. In addition, reference to an element by the indefinite article “a” or “an” does not exclude the possibility that more than one of the element is present, unless the context clearly requires that there be one and only one of the elements. The indefinite article “a” or “an” thus usually means “at least one”.
- Each embodiment as identified herein may be combined together unless otherwise indicated. All patent and literature references cited in the present specification are hereby incorporated by reference in their entirety.
- The following examples are offered for illustrative purposes only, and are not intended to limit the scope of the present invention in any way.
- AON design was based on (partly) overlapping open secondary structures of the target exon RNA as predicted by the m-fold program, on (partly) overlapping putative SR-protein binding sites as predicted by the ESE-finder software. AONs were synthesized by Prosensa Therapeutics B.V. (Leiden, Netherlands), and contain 2′-O-methyl RNA and full-length phosphorothioate (PS) backbones.
- Myotube cultures derived from a healthy individual (“human control”) (examples 1, 3, and 4;
exon exon 46 skipping) were processed as described previously (Aartsma-Rus et al., Neuromuscul. Disord. 2002; 12: S71-77 and Hum Mol Genet 2003; 12(8): 907-14). - For the screening of AONs, myotube cultures were transfected with 50 nM and 150 nM (example 2), 200nM and 500 nM (example 4) or 500nM only (examples 1 and 3) of each AON. Transfection reagent UNIFectylin (Prosensa Therapeutics BV, Netherlands) was used, with 2 μl UNIFectylin per μg AON. Exon skipping efficiencies were determined by nested RT-PCR analysis using primers in the exons flanking the targeted exons (43, 46, 50, 51, 52, or 53). PCR fragments were isolated from agarose gels for sequence verification. For quantification, the PCR products were analyzed using the DNA 1000 LabChips Kit on the Agilent 2100 bioanalyzer (Agilent Technologies, USA).
-
DMD exon 43 skipping. - A series of AONs targeting sequences within
exon 43 were designed and transfected in healthy control myotube cultures. Subsequent RT-PCR and sequence analysis of isolated RNA demonstrated that almost all AONs targeting a continuous nucleotide stretch withinexon 43 herein defined as SEQ ID NO 2, was indeed capable of inducingexon 43 skipping. PS237 (SEQ ID NO: 65) reproducibly induced highest levels ofexon 43 skipping (up to 66%) at 500 nM, as shown inFIG. 1 . For comparison, also PS238 and PS240 are shown, inducingexon 43 skipping levels up to 13% and 36% respectively (FIG. 1 ). The precise skipping ofexon 43 was confirmed by sequence analysis of the novel smaller transcript fragments. Noexon 43 skipping was observed in non-treated cells (NT). -
DMD exon 46 skipping. - A series of AONs targeting sequences within
exon 46 were designed and transfected in myotube cultures derived from a DMD patient carrying an exon 45 deletion in the DMD gene. For patients with such mutation antisense-inducedexon 46 skipping would induce the synthesis of a novel, BMD-like dystrophin protein that may indeed alleviate one or more symptoms of the disease. Subsequent RT-PCR and sequence analysis of isolated RNA demonstrated that almost all AONs targeting a continuous nucleotide stretch withinexon 46 herein defined as SEQ ID NO 3, was indeed capable of inducingexon 46 skipping, even at relatively low AON concentrations of 50 nM. PS182 (SEQ ID NO: 117) reproducibly induced highest levels ofexon 46 skipping (up to 50% at 50 nM and 74% at 150 nM), as shown inFIG. 2 . For comparison, also PS177, PS179, and PS181 are shown, inducingexon 46 skipping levels up to 55%, 58% and 42% respectively at 150 nM (FIG. 2 ). The precise skipping ofexon 46 was confirmed by sequence analysis of the novel smaller transcript fragments. Noexon 46 skipping was observed in non-treated cells (NT). -
DMD exon 50 skipping. - A series of AONs targeting sequences within
exon 50 were designed and transfected in healthy control myotube cultures. Subsequent RT-PCR and sequence analysis of isolated RNA demonstrated that almost all AONs targeting a continuous nucleotide stretch withinexon 50 herein defined as SEQ ID NO 4, was indeed capable of inducingexon 50 skipping. PS248 (SEQ ID NO: 127) reproducibly induced highest levels ofexon 50 skipping (up to 35% at 500 nM), as shown inFIG. 3 . For comparison, also PS245, PS246, and PS247 are shown, inducingexon 50 skipping levels up to 14-16% at 500 nM (FIG. 3 ). The precise skipping ofexon 50 was confirmed by sequence analysis of the novel smaller transcript fragments. Noexon 50 skipping was observed in non-treated cells (NT). -
DMD exon 51 skipping. - A series of AONs targeting sequences within
exon 51 were designed and transfected in healthy control myotube cultures. Subsequent RT-PCR and sequence analysis of isolated RNA demonstrated that almost all AONs targeting a continuous nucleotide stretch withinexon 51 herein defined as SEQ ID NO 5, was indeed capable of inducingexon 51 skipping. The AON with SEQ ID NO 180 reproducibly induced highest levels ofexon 51 skipping (not shown). -
DMD exon 52 skipping. - A series of AONs targeting sequences within
exon 52 were designed and transfected in healthy control myotube cultures. Subsequent RT-PCR and sequence analysis of isolated RNA demonstrated that almost all AONs targeting a continuous nucleotide stretch withinexon 52 herein defined as SEQ ID NO 6, was indeed capable of inducingexon 52 skipping. PS236 (SEQ ID NO: 299) reproducibly induced highest levels ofexon 52 skipping (up to 88% at 200 nM and 91% at 500 nM), as shown inFIG. 4 . For comparison, also PS232 and AON 52-1 (previously published by Aartsma-Rus et al. Oligonucleotides 2005) are shown, inducingexon 52 skipping at levels up to 59% and 10% respectively when applied at 500 nM (FIG. 4 ). The precise skipping ofexon 52 was confirmed by sequence analysis of the novel smaller transcript fragments. Noexon 52 skipping was observed in non-treated cells (NT). -
DMD exon 53 skipping. - A series of AONs targeting sequences within
exon 53 were designed and transfected in healthy control myotube cultures. Subsequent RT-PCR and sequence analysis of isolated RNA demonstrated that almost all AONs targeting a continuous nucleotide stretch withinexon 53 herein defined asSEQ ID NO 7, was indeed capable of inducingexon 53 skipping. The AON with SEQ ID NO 328 reproducibly induced highest levels ofexon 53 skipping (not shown). -
Sequence listing DMD gene amino acid sequence SEQ ID NO 1: MLWWEEVEDCYEREDVQKKTFTKWVNAQFSKFGKQHIENLFSDLQDGRRLLDLLEGLTGQKL PKEKGSTRVHALNNVNKALRVLQNNNVDLVNIGSTDIVDGNHKLTLGLIWNIILHWQVKNVMK NIMAGLQQTNSEKILLSWVRQSTRNYPQVNVINFTTSWSDGLALNALIHSHRPDLFDWNSVVCQ QSATQRLEHAFNIARYQLGIEKLLDPEDVDTTYPDKKSILMYITSLFQVLPQQVSIEAIQEVEMLP RPPKVTKEEHFQLHHQMHYSQQITVSLAQGYERTSSPKPRFKSYAYTQAAYVTTSDPTRSPFPSQ HLEAPEDKSFGSSLMESEVNLDRYQTALEEVLSWLLSAEDTLQAQGEISNDVEVVKDQFHTHEG YMMDLTAHQGRVGNILQLGSKLIGTGKLSEDEETEVQEQMNLLNSRWECLRVASMEKQSNLH RVLMDLQNQKLKELNDWLTKTEERTRKMEEEPLGPDLEDLKRQVQQHKVLQEDLEQEQVRVN SLTHMVVVVDESSGDHATAALEEQLKVLGDRWANICRWTEDRWVLLQDILLKWQRLTEEQL FSAWLSEKEDAVNKIHTTGFKDQNEMLSSLQKLAVLKADLEKKKQSMGKLYSLKQDLLSTLKN KSVTQKTEAWLDNFARCWDNLVQKLEKSTAQISQAVTTTQPSLTQTTVMETVTTVTTREQILV KHAQEELPPPPPQKKRQITVDSEIRKRLDVDITELHSWITRSEAVLQSPEFAIFRKEGNFSDLKEK VNAIEREKAEKFRKLQDASRSAQALVEQMVNEGVNADSIKQASEQLNSRWIEFCQLLSERLNW LEYQNNIIAFYNQLQQLEQMTTTAENWLKIQPTTPSEPTAIKSQLKICKDEVNRLSGLQPQIERLK IQSIALKEKGQGPMFLDADFVAFTNHFKQVFSDVQAREKELQTIFDTLPPMRYQETMSAIRTWV QQSETKLSIPQLSVTDYEIMEQRLGELQALQSSLQEQQSGLYYLSTTVKEMSKKAPSEISRKYQS EFEEIEGRWKKLSSQLVEHCQKLEEQMNKLRKIQNHIQTLKKWMAEVDVFLKEEWPALGDSEI LKKQLKQCRLLVSDIQTIQPSLNSVNEGGQKIKNEAEPEFASRLETELKELNTQWDHMCQQVYA RKEALKGGLEKTVSLQKDLSEMHEWMTQAEEEYLERDFEYKTPDELQKAVEEMKRAKEEAQQ KEAKVKLLTESVNSVIAQAPPVAQEALKKELETLTTNYQWLCTRLNGKCKTLEEVWACWHELL SYLEKANKWLNEVEFKLKTTENIPGGAEEISEVLDSLENLMRHSEDNPNQIRILAQTLTDGGVM DELINEELETFNSRWRELHEEAVRRQKLLEQSIQSAQETEKSLHLIQESLTFIDKQLAAYIADKVD AAQMPQEAQKIQSDLTSHEISLEEMKKHNQGKEAAQRVLSQIDVAQKKLQDVSMKFRLFQKPA NFEQRLQESKMILDEVKMHLPALETKSVEQEVVQSQLNHCVNLYKSLSEVKSEVEMVIKTGRQI VQKKQTENPKELDERVTALKLHYNELGAKVTERKQQLEKCLKLSRKMRKEMNVLTEWLAAT DMELTKRSAVEGMPSNLDSEVAWGKATQKEIEKQKVHLKSITEVGEALKTVLGKKETLVEDKL SLLNSNWIAVTSRAEEWLNLLLEYQKHMETFDQNVDHITKWITQADTLLDESEKKKPQQKEDVL KRLKAELNDIRPKVDSTRDQAANLMANRGDHCRKLVEPQISELNHRFAAISHRIKTGKASIPLKE LEQFNSDIQKLLEPLEAEIQQGVNLKEEDFNKDMNEDNEGTVKELLQRGDNLQQRITDERKREEI KIKQQLLQTKHNALKDLRSQRRKKALEISHQWYQYKRQADDLLKCLDDIEKKLASLPEPRDER KIKEIDRELQKKKEELNAVRRQAEGLSEDGAAMAVEPTQIQLSKRWREIESKFAQFRRLNFAQIH TVREETMMVMTEDMPLEISYVPSTYLTEITHVSQALLEVEQLLNAPDLCAKDFEDLFKQEESLK NIKDSLQQSSGRIDIIHSKKTAALQSATPVERVKLQEALSQLDFQWEKVNKMYKDRQGRFDRSV EKWRRFHYDIKIFNQWLTEAEQFLRKTQIPENWEHAKYKWYLKELQDGIGQRQTVVRTLNATG EEIIQQSSKTDASILQEKLGSLNLRWQEVCKQLSDRKKRLEEQKNILSEFQRDLNEFVLWLEEAD NIASIPLEPGKEQQLKEKLEQVKLLVEELPLRQGILKQLNETGGPVLVSAPISPEEQDKLENKLKQ TNLQWIKVSRALPEKQGEIEAQIKDLGQLEKKLEDLEEQLNHLLLWLSPIRNQLEIYNQPNQEGP FDVQETEIAVQAKQPDVEEILSKGQHLYKEKPATQPVKRKLEDLSSEWKAVNRLLQELRAKQP DLAPGLTTIGASPTQTVTLVTQPVVTKETAISKLEMPSSLMLEVPALADFNRAWTELTDWLSLL DQVIKSQRVMVGDLEDINEMIIKQKATMQDLEQRRPQLEELITAAQNLKNKTSNQEARTIITDRI ERIQNQWDEVQEHLQNRRQQLNEMLKDSTQWLEAKEEAEQVLGQARAKLESWKEGPYTVDAI QKKIIETKQLAKDLRQWQTNVDVANDLALKLLRDYSADDTRKVHMITENINASWRSIHKRVSE REAALEETHRLLQQFPLDLEKFLAWLTEAETTANVLQDATRKERLLEDSKGVKELMKQWQDL QGEIEAHTDVYHNLDENSQKILRSLEGSDDAVLLQRRLDNMNFKWSELRKKSLNIRSHLEASSD QWKRLHLSLQELLVWLQLKDDELSRQAPIGGDFPAVQKQNDVHRAFKRELKTKEPVIMSTLET VRIFLIEQPLEGLEKLYQEPRELPPEERAQNVIRLLRKQAEEVNTEWEKLNLHSADWQRKIDET LERLQELQEATDELDLKLRQAEVIKGSWQPVGDLLIDSLQDHLEKVKALRGEIAPLKENVSHVN DLARQLTTLGIQLSPYNLSTLEDLNTRWKLLQVAVEDRVRQLHEAHRDFGPASQHFLSTSVQGP WERAISPNKVPYYINHETQTTCWDHPKMTELYQSLADLNNVRFSAYRTAMKLRRLQKALCLDL LSLSAACDALDQHNLKQNDQPMDILQIINCLTTIYDRLEQEHNNLVNVPLCVDMCLNWLLNVY DTGRTGRIRVLSFKTGIISLCKAHLEDKYRYLFKQVASSTGFCDQRRLGLLLHDSIQIPRQLGEVA SFGGSNIEPSVRSCFQFANNKPEIEAALFLDWMRLEPQSMVWLPVLHRVAAAETAKHQAKCNIC KECPIIGFRYRSLKHFNYDICQSCFFSGRVAKGHKMHYPMVEYCTPTTSGEDVRDFAKVLKNKF RTKRYFAKHPRMGYLPVQTVLEGDNMETPVTLINFWPVDSAPASSPQLSHDDTHSRIEHYASRL AEMENSNGSYLNDSISPNESIDDEHLLIQHYCQSLNQDSPLSQPRSPAQILISLESEERGELERILAD LEEENRNLQAEYDRLKQQHEHKGLSPLPSPPEMMPTSPQSPRDAELIAEAKLLRQHKGRLEARM QILEDHNKQLESQLHRLRQLLEQPQAEAKVNGTTVSSPSTSLQRSDSSQPMLLRVVGSQTSDSM GEEDLLSPPQDTSTGLEEVMEQLNNSFPSSRGRNTPGKPMREDTM SEQ ID NO 2 (exon 43): AGAUAGUCUACAACAAAGCUCAGGUCGGAUUGACAUUAUUCAUAGCAAGAAGACAGCAG CAUUGCAAAGUGCAACGCCUGUGG SEQ ID NO 3 (exon 46): UUAUGGUUGGAGGAAGCAGAUAACAUUGCUAGUAUCCCACUUGAACCUGGAAAAGAGCA GCAACUAAAAGAAAAGC SEQ ID NO 4 (exon 50): ′GGCGGTAAACCGUUUACUUCAAGAGCUGAGGGCAAAGCAGCCUG ACCUAGC UCCUGGACUGACCACUAUUGG SEQ ID NO 5 (exon 51): CUCCUACUCAGACUGUUACUCUGGUGACACAACCUGUGGUUACUAAGGAAACUGCCAUC UCCAAACUAGAAAUGCCAUCUUCCUUGAUGUUGGAGGUAC SEQ ID NO 6 (exon 52): AUGCAGGAUUUGGAACAGAGGCGUCCCCAGUUGGAAGAACUCAUUACCGCUGCCCAAAA UUUGAAAAA CAAGACCAGCAAUCAAGAGGCU SEQ ID NO 7 (exon 53): AAAUGUUAAAGGAUUCAACACAAUGGCUGGAAGCUAAGGAAGAAGCUGAGCAGGUCUUA GGACAGGCCAGAG -
TABLE 1 oligonucleotides for skipping DMD Gene Exon 43 SEQ ID CCACAGGCGUUGCACUUUGCAAUGC NO 8 SEQ ID CACAGGCGUUGCACUUUGCAAUGCU NO 9 SEQ ID ACAGGCGUUGCACUUUGCAAUGCUG NO 10 SEQ ID CAGGCGUUGCACUUUGCAAUGCUGC NO 11 SEQ ID AGGCGUUGCACUUUGCAAUGCUGCU NO 12 SEQ ID GGCGUUGCACUUUGCAAUGCUGCUG NO 13 SEQ ID GCGUUGCACUUUGCAAUGCUGCUGU NO 14 SEQ ID CGUUGCACUUUGCAAUGCUGCUGUC NO 15 SEQ ID CGUUGCACUUUGCAAUGCUGCUG NO 16 PS240 SEQ ID GUUGCACUUUGCAAUGCUGCUGUCU NO 17 SEQ ID UUGCACUUUGCAAUGCUGCUGUCUU NO 18 SEQ ID UGCACUUUGCAAUGCUGCUGUCUUC NO 19 SEQ ID GCACUUUGCAAUGCUGCUGUCUUCU NO 20 SEQ ID CACUUUGCAAUGCUGCUGUCUUCUU NO 21 SEQ ID ACUUUGCAAUGCUGCUGUCUUCUUG NO 22 SEQ ID CUUUGCAAUGCUGCUGUCUUCUUGC NO 23 SEQ ID UUUGCAAUGCUGCUGUCUUCUUGCU NO 24 SEQ ID UUGCAAUGCUGCUGUCUUCUUGCUA NO 25 SEQ ID UGCAAUGCUGCUGUCUUCUUGCUAU NO 26 SEQ ID GCAAUGCUGCUGUCUUCUUGCUAUG NO 27 SEQ ID CAAUGCUGCUGUCUUCUUGCUAUGA NO 28 SEQ ID AAUGCUGCUGUCUUCUUGCUAUGAA NO 29 SEQ ID AUGCUGCUGUCUUCUUGCUAUGAAU NO 30 SEQ ID UGCUGCUGUCUUCUUGCUAUGAAUA NO 31 SEQ ID GCUGCUGUCUUCUUGCUAUGAAUAA NO 32 SEQ ID CUGCUGUCUUCUUGCUAUGAAUAAU NO 33 SEQ ID UGCUGUCUUCUUGCUAUGAAUAAU NO 34 G SEQ ID GCUGUCUUCUUGCUAUGAAUAAUG NO 35 U SEQ ID CUGUCUUCUUGCUAUGAAUAAUGUC NO 36 SEQ ID UGUCUUCUUGCUAUGAAUAAUGUC NO 37 A SEQ ID GUCUUCUUGCUAUGAAUAAUGUCA NO 38 A SEQ ID NO 39 UCUUCUUGCUAUGAAUAAUGUCAAU SEQ ID NO 40 CUUCUUGCUAUGAAUAAUGUCAAUC SEQ ID NO 41 UUCUUGCUAUGAAUAAUGUCAAUCC SEQ ID NO 42 UCUUGCUAUGAAUAAUGUCAAUCCG SEQ ID NO 43 CUUGCUAUGAAUAAUGUCAAUCCGA SEQ ID NO 44 UUGCUAUGAAUAAUGUCAAUCCGAC SEQ ID NO 45 UGCUAUGAAUAAUGUCAAUCCGACC SEQ ID NO 46 GCUAUGAAUAAUGUCAAUCCGACCU SEQ ID NO 47 CUAUGAAUAAUGUCAAUCCGACCUG SEQ ID NO 48 UAUGAAUAAUGUCAAUCCGACCUGA SEQ ID NO 49 AUGAAUAAUGUCAAUCCGACCUGAG SEQ ID NO 50 UGAAUAAUGUCAAUCCGACCUGAGC SEQ ID NO 51 GAAUAAUGUCAAUCCGACCUGAGCU SEQ ID NO 52 AAUAAUGUCAAUCCGACCUGAGCUU SEQ ID NO 53 AUAAUGUCAAUCCGACCUGAGCUUU SEQ ID NO 54 UAAUGUCAAUCCGACCUGAGCUUUG SEQ ID NO 55 AAUGUCAAUCCGACCUGAGCUUUGU SEQ ID NO 56 AUGUCAAUCCGACCUGAGCUUUGUU SEQ ID NO 57 UGUCAAUCCGACCUGAGCUUUGUUG SEQ ID NO 58 GUCAAUCCGACCUGAGCUUUGUUGU SEQ ID NO 59 UCAAUCCGACCUGAGCUUUGUUGUA SEQ ID NO 60 CAAUCCGACCUGAGCUUUGUUGUAG SEQ ID NO 61 AAUCCGACCUGAGCUUUGUUGUAGA SEQ ID NO 62 AUCCGACCUGAGCUUUGUUGUAGAC SEQ ID NO 63 UCCGACCUGAGCUUUGUUGUAGACU SEQ ID NO 64 CCGACCUGAGCUUUGUUGUAGACUA SEQ ID NO 65 CGACCUGAGCUUUGUUGUAG PS237 SEQ ID NO 66 CGACCUGAGCUUUGUUGUAGACUAU PS238 SEQ ID NO 67 GACCUGAGCUUUGUUGUAGACUAUC SEQ ID NO 68 ACCUGAGCUUUGUUGUAGACUAUCA SEQ ID NO 69 CCUGA GCUUU GUUGU AGACU AUC -
TABLE 2 oligonucleotides for skipping DMD Gene Exon 46 SEQ ID GCUUUUCUUUUAGUUGCUGCUCUUU NO 70 PS179 SEQ ID CUUUUCUUUUAGUUGCUGCUCUUUU NO 71 SEQ ID UUUUCUUUUAGUUGCUGCUCUUUUC NO 72 SEQ ID UUUCUUUUAGUUGCUGCUCUUUUCC NO 73 SEQ ID UUCUUUUAGUUGCUGCUCUUUUCCA NO 74 SEQ ID UCUUUUAGUUGCUGCUCUUUUCCAG NO 75 SEQ ID CUUUUAGUUGCUGCUCUUUUCCAGG NO 76 SEQ ID UUUUAGUUGCUGCUCUUUUCCAGGU NO 77 SEQ ID UUUAGUUGCUGCUCUUUUCCAGGUU NO 78 SEQ ID UUAGUUGCUGCUCUUUUCCAGGUUC NO 79 SEQ ID UAGUUGCUGCUCUUUUCCAGGUUCA NO 80 SEQ ID AGUUGCUGCUCUUUUCCAGGUUCAA NO 81 SEQ ID GUUGCUGCUCUUUUCCAGGUUCAAG NO 82 SEQ ID UUGCUGCUCUUUUCCAGGUUCAAGU NO 83 PS181 SEQ ID UGCUGCUCUUUUCCAGGUUCAAGUG NO 84 SEQ ID GCUGCUCUUUUCCAGGUUCAAGUGG NO 85 SEQ ID CUGCUCUUUUCCAGGUUCAAGUGGG NO 86 SEQ ID UGCUCUUUUCCAGGUUCAAGUGGGA NO 87 SEQ ID GCUCUUUUCCAGGUUCAAGUGGGAC NO 88 SEQ ID CUCUUUUCCAGGUUCAAGUGGGAUA NO 89 SEQ ID UCUUUUCCAGGUUCAAGUGGGAUAC NO 90 PS182 SEQ ID UCUUUUCCAGGUUCAAGUGG NO 91 PS177 SEQ ID CUUUUCCAGGUUCAAGUGGGAUACU NO 92 SEQ ID UUUUCCAGGUUCAAGUGGGAUACU NO 93 A SEQ ID UUUCCAGGUUCAAGUGGGAUACUA NO 94 G SEQ ID UUCCAGGUUCAAGUGGGAUACUAGC NO 95 SEQ ID UCCAGGUUCAAGUGGGAUACUAGCA NO 96 SEQ ID NO 97 CCAGGUUCAAGUGGGAUACUAGCAA SEQ ID NO 98 CAGGUUCAAGUGGGAUACUAGCAAU SEQ ID NO 99 AGGUUCAAGUGGGAUACUAGCAAUG SEQ ID NO GGUUCAAGUGGGAUACUAGCAAUGU 100 SEQ ID NO GUUCAAGUGGGAUACUAGCAAUGUU 101 SEQ ID NO UUCAAGUGGGAUACUAGCAAUGUUA 102 SEQ ID NO UCAAGUGGGAUACUAGCAAUGUUAU 103 SEQ ID NO CAAGUGGGAUACUAGCAAUGUUAUC 104 SEQ ID NO AAGUGGGAUACUAGCAAUGUUAUCU 105 SEQ ID NO AGUGGGAUACUAGCAAUGUUAUCUG 106 SEQ ID NO GUGGGAUACUAGCAAUGUUAUCUGC 107 SEQ ID NO UGGGAUACUAGCAAUGUUAUCUGCU 108 SEQ ID NO GGGAUACUAGCAAUGUUAUCUGCUU 109 SEQ ID NO GGAUACUAGCAAUGUUAUCUGCUUC 110 SEQ ID NO GAUACUAGCAAUGUUAUCUGCUUCC 111 SEQ ID NO AUACUAGCAAUGUUAUCUGCUUCCU 112 SEQ ID NO UACUAGCAAUGUUAUCUGCUUCCUC 113 SEQ ID NO ACUAGCAAUGUUAUCUGCUUCCUCC 114 SEQ ID NO CUAGCAAUGUUAUCUGCUUCCUCCA 115 SEQ ID NO UAGCAAUGUUAUCUGCUUCCUCCAA 116 SEQ ID NO AGCAAUGUUAUCUGCUUCCUCCAAC 117 SEQ ID NO GCAAUGUUAUCUGCUUCCUCCAACC 118 SEQ ID NO CAAUGUUAUCUGCUUCCUCCAACCA 119 SEQ ID NO AAUGUUAUCUGCUUCCUCCAACCAU 120 SEQ ID NO AUGUUAUCUGCUUCCUCCAACCAUA 121 SEQ ID NO UGUUAUCUGCUUCCUCCAACCAUAA 122 -
TABLE 3 oligonucleotides for skipping DMD Gene Exon 50 SEQ ID CCAAUAGUGGUCAGUCCAGGAGCUA NO 123 SEQ ID CAAUAGUGGUCAGUCCAGGAGCUAG NO 124 SEQ ID AAUAGUGGUCAGUCCAGGAGCUAGG NO 125 SEQ ID AUAGUGGUCAGUCCAGGAGCUAGGU NO 126 SEQ ID AUAGUGGUCAGUCCAGGAGCU NO 127 PS248 SEQ ID UAGUGGUCAGUCCAGGAGCUAGGUC NO 128 SEQ ID AGUGGUCAGUCCAGGAGCUAGGUCA NO 129 SEQ ID GUGGUCAGUCCAGGAGCUAGGUCAG NO 130 SEQ ID UGGUCAGUCCAGGAGCUAGGUCAGG NO 131 SEQ ID GGUCAGUCCAGGAGCUAGGUCAGGC NO 132 SEQ ID GUCAGUCCAGGAGCUAGGUCAGGCU NO 133 SEQ ID UCAGUCCAGGAGCUAGGUCAGGCUG NO 134 SEQ ID CAGUCCAGGAGCUAGGUCAGGCUGC NO 135 SEQ ID AGUCCAGGAGCUAGGUCAGGCUGCU NO 136 SEQ ID GUCCAGGAGCUAGGUCAGGCUGCUU NO 137 SEQ ID UCCAGGAGCUAGGUCAGGCUGCUUU NO 138 SEQ ID CCAGGAGCUAGGUCAGGCUGCUUUG NO 139 SEQ ID CAGGAGCUAGGUCAGGCUGCUUUGC NO 140 SEQ ID AGGAGCUAGGUCAGGCUGCUUUGCC NO 141 SEQ ID GGAGCUAGGUCAGGCUGCUUUGCCC NO 142 SEQ ID GAGCUAGGUCAGGCUGCUUUGCCCU NO 143 PS247 SEQ ID AGCUAGGUCAGGCUGCUUUGCCCUC NO 144 PS245 SEQ ID GCUAGGUCAGGCUGCUUUGCCCUCA NO 145 SEQ ID CUCAGCUCUUGAAGUAAACGGUUUA NO 530 SEQ ID CAGCUCUUGAAGUAAACGGUUUACC NO 532 SEQ ID GCUCUUGAAGUAAACGGUUUACCGC NO 534 SEQ ID NO CUAGGUCAGGCUGCUUUGCCCUCAG 146 SEQ ID NO UAGGUCAGGCUGCUUUGCCCUCAGC 147 SEQ ID NO AGGUCAGGCUGCUUUGCCCUCAGCU 148 SEQ ID NO GGUCAGGCUGCUUUGCCCUCAGCUC 149 SEQ ID NO GUCAGGCUGCUUUGCCCUCAGCUCU 150 SEQ ID NO UCAGGCUGCUUUGCCCUCAGCUCUU 151 SEQ ID NO CAGGCUGCUUUGCCCUCAGCUCUUG 152 SEQ ID NO AGGCUGCUUUGCCCUCAGCUCUUGA 153 SEQ ID NO GGCUGCUUUGCCCUCAGCUCUUGAA 154 SEQ ID NO GCUGCUUUGCCCUCAGCUCUUGAAG 155 SEQ ID NO CUGCUUUGCCCUCAGCUCUUGAAGU 156 SEQ ID NO UGCUUUGCCCUCAGCUCUUGAAGUA 157 SEQ ID NO GCUUUGCCCUCAGCUCUUGAAGUAA 158 SEQ ID NO CUUUGCCCUCAGCUCUUGAAGUAAA 159 SEQ ID NO UUUGCCCUCAGCUCUUGAAGUAAAC 160 SEQ ID NO UUGCCCUCAGCUCUUGAAGUAAACG 161 SEQ ID NO UGCCCUCAGCUCUUGAAGUAAACGG 162 SEQ ID NO GCCCUCAGCUCUUGAAGUAAACGGU 163 SEQ ID NO CCCUCAGCUCUUGAAGUAAACGGUU 164 SEQ ID NO CCUCAGCUCUUGAAGUAAAC 165 PS246 SEQ ID NO CCUCAGCUCUUGAAGUAAACG 166 SEQ ID NO CUCAGCUCUUGAAGUAAACG 167 SEQ ID NO CCUCAGCUCUUGAAGUAAACGGUUU 529 SEQ ID NO UCAGCUCUUGAAGUAAACGGUUUAC 531 SEQ ID NO AGCUCUUGAAGUAAACGGUUUACCG 533 SEQ ID NO CUCUUGAAGUAAACGGUUUACCGCC 535 -
TABLE 4 oligonucleotides for skipping DMD Gene Exon 51 SEQ ID GUACCUCCAACAUCAAGGAAGAUGG NO 168 SEQ ID UACCUCCAACAUCAAGGAAGAUGGC NO 169 SEQ ID ACCUCCAACAUCAAGGAAGAUGGCA NO 170 SEQ ID CCUCCAACAUCAAGGAAGAUGGCAU NO 171 SEQ ID CUCCAACAUCAAGGAAGAUGGCAUU NO 172 SEQ ID UCCAACAUCAAGGAAGAUGGCAUUU NO 173 SEQ ID CCAACAUCAAGGAAGAUGGCAUUUC NO 174 SEQ ID CAACAUCAAGGAAGAUGGCAUUUCU NO 175 SEQ ID AACAUCAAGGAAGAUGGCAUUUCUA NO 176 SEQ ID ACAUCAAGGAAGAUGGCAUUUCUAG NO 177 SEQ ID CAUCAAGGAAGAUGGCAUUUCUAGU NO 178 SEQ ID AUCAAGGAAGAUGGCAUUUCUAGUU NO 179 SEQ ID UCAAGGAAGAUGGCAUUUCUAGUUU NO 180 SEQ ID CAAGGAAGAUGGCAUUUCUAGUUUG NO 181 SEQ ID AAGGAAGAUGGCAUUUCUAGUUUGG NO 182 SEQ ID AGGAAGAUGGCAUUUCUAGUUUGGA NO 183 SEQ ID GGAAGAUGGCAUUUCUAGUUUGGAG NO 184 SEQ ID GAAGAUGGCAUUUCUAGUUUGGAGA NO 185 SEQ ID AAGAUGGCAUUUCUAGUUUGGAGAU NO 186 SEQ ID AGAUGGCAUUUCUAGUUUGGAGAUG NO 187 SEQ ID GAUGGCAUUUCUAGUUUGGAGAUGG NO 188 SEQ ID AUGGCAUUUCUAGUUUGGAGAUGGC NO 189 SEQ ID UGGCAUUUCUAGUUUGGAGAUGGCA NO 190 SEQ ID GGCAUUUCUAGUUUGGAGAUGGCAG NO 191 SEQ ID GCAUUUCUAGUUUGGAGAUGGCAGU NO 192 SEQ ID CAUUUCUAGUUUGGAGAUGGCAGUU NO 193 SEQ ID AUUUCUAGUUUGGAGAUGGCAGUUU NO 194 SEQ ID UUUCUAGUUUGGAGAUGGCAGUUUC NO 195 SEQ ID UUCUAGUUUGGAGAUGGCAGUUUCC NO 196 SEQ ID UCUAGUUUGGAGAUGGCAGUUUCCU NO 197 SEQ ID CUAGUUUGGAGAUGGCAGUUUCCUU NO 198 SEQ ID UAGUUUGGAGAUGGCAGUUUCCUUA NO 199 SEQ ID AGUUUGGAGAUGGCAGUUUCCUUAG NO 200 SEQ ID GUUUGGAGAUGGCAGUUUCCUUAGU NO 201 SEQ ID UUUGGAGAUGGCAGUUUCCUUAGUA NO 202 SEQ ID UUGGAGAUGGCAGUUUCCUUAGUAA NO 203 SEQ ID UGGAGAUGGCAGUUUCCUUAGUAAC NO 204 SEQ ID NO GAGAUGGCAGUUUCCUUAGUAACCA 205 SEQ ID NO AGAUGGCAGUUUCCUUAGUAACCAC 206 SEQ ID NO GAUGGCAGUUUCCUUAGUAACCACA 207 SEQ ID NO AUGGCAGUUUCCUUAGUAACCACAG 208 SEQ ID NO UGGCAGUUUCCUUAGUAACCACAGG 209 SEQ ID NO GGCAGUUUCCUUAGUAACCACAGGU 210 SEQ ID NO GCAGUUUCCUUAGUAACCACAGGUU 211 SEQ ID NO CAGUUUCCUUAGUAACCACAGGUUG 212 SEQ ID NO AGUUUCCUUAGUAACCACAGGUUGU 213 SEQ ID NO GUUUCCUUAGUAACCACAGGUUGUG 214 SEQ ID NO UUUCCUUAGUAACCACAGGUUGUGU 215 SEQ ID NO UUCCUUAGUAACCACAGGUUGUGUC 216 SEQ ID NO UCCUUAGUAACCACAGGUUGUGUCA 217 SEQ ID NO CCUUAGUAACCACAGGUUGUGUCAC 218 SEQ ID NO CUUAGUAACCACAGGUUGUGUCACC 219 SEQ ID NO UUAGUAACCACAGGUUGUGUCACCA 220 SEQ ID NO UAGUAACCACAGGUUGUGUCACCAG 221 SEQ ID NO AGUAACCACAGGUUGUGUCACCAGA 222 SEQ ID NO GUAACCACAGGUUGUGUCACCAGAG 223 SEQ ID NO UAACCACAGGUUGUGUCACCAGAGU 224 SEQ ID NO AACCACAGGUUGUGUCACCAGAGUA 225 SEQ ID NO ACCACAGGUUGUGUCACCAGAGUAA 226 SEQ ID NO CCACAGGUUGUGUCACCAGAGUAAC 227 SEQ ID NO CACAGGUUGUGUCACCAGAGUAACA 228 SEQ ID NO ACAGGUUGUGUCACCAGAGUAACAG 229 SEQ ID NO CAGGUUGUGUCACCAGAGUAACAGU 230 SEQ ID NO AGGUUGUGUCACCAGAGUAACAGUC 231 SEQ ID NO GGUUGUGUCACCAGAGUAACAGUCU 232 SEQ ID NO GUUGUGUCACCAGAGUAACAGUCUG 233 SEQ ID NO UUGUGUCACCAGAGUAACAGUCUGA 234 SEQ ID NO UGUGUCACCAGAGUAACAGUCUGAG 235 SEQ ID NO GUGUCACCAGAGUAACAGUCUGAGU 236 SEQ ID NO UGUCACCAGAGUAACAGUCUGAGUA 237 SEQ ID NO GUCACCAGAGUAACAGUCUGAGUAG 238 SEQ ID NO UCACCAGAGUAACAGUCUGAGUAGG 239 SEQ ID NO CACCAGAGUAACAGUCUGAGUAGGA 240 SEQ ID NO ACCAGAGUAACAGUCUGAGUAGGAG 241 -
TABLE 5 oligonucleotides for skipping DMD Gene Exon 52 SEQ ID AGCCUCUUGAUUGCUGGUCUUGUUU NO 242 SEQ ID GCCUCUUGAUUGCUGGUCUUGUUUU NO 243 SEQ ID CCUCUUGAUUGCUGGUCUUGUUUUU NO 244 SEQ ID CCUCUUGAUUGCUGGUCUUG NO 245 SEQ ID CUCUUGAUUGCUGGUCUUGUUUUUC NO 246 PS232 SEQ ID UCUUGAUUGCUGGUCUUGUUUUUCA NO 247 SEQ ID CUUGAUUGCUGGUCUUGUUUUUCAA NO 248 SEQ ID UUGAUUGCUGGUCUUGUUUUUCAAA NO 249 SEQ ID UGAUUGCUGGUCUUGUUUUUCAAAU NO 250 SEQ ID GAUUGCUGGUCUUGUUUUUCAAAUU NO 251 SEQ ID GAUUGCUGGUCUUGUUUUUC NO 252 SEQ ID AUUGCUGGUCUUGUUUUUCAAAUUU NO 253 SEQ ID UUGCUGGUCUUGUUUUUCAAAUUUU NO 254 SEQ ID UGCUGGUCUUGUUUUUCAAAUUUUG NO 255 SEQ ID GCUGGUCUUGUUUUUCAAAUUUUGG NO 256 SEQ ID CUGGUCUUGUUUUUCAAAUUUUGGG NO 257 SEQ ID UGGUCUUGUUUUUCAAAUUUUGGGC NO 258 SEQ ID GGUCUUGUUUUUCAAAUUUUGGGCA NO 259 SEQ ID GUCUUGUUUUUCAAAUUUUGGGCAG NO 260 SEQ ID UCUUGUUUUUCAAAUUUUGGGCAGC NO 261 SEQ ID CUUGUUUUUCAAAUUUUGGGCAGCG NO 262 SEQ ID UUGUUUUUCAAAUUUUGGGCAGCGG NO 263 SEQ ID UGUUUUUCAAAUUUUGGGCAGCGGU NO 264 PS236 SEQ ID GUUUUUCAAAUUUUGGGCAGCGGUA NO 265 SEQ ID UUUUUCAAAUUUUGGGCAGCGGUAA NO 266 SEQ ID UUUUCAAAUUUUGGGCAGCGGUAAU NO 267 SEQ ID UUUCAAAUUUUGGGCAGCGGUAAUG NO 268 SEQ ID UUCAAAUUUUGGGCAGCGGUAAUGA NO 269 SEQ ID UCAAAUUUUGGGCAGCGGUAAUGAG NO 270 SEQ ID CAAAUUUUGGGCAGCGGUAAUGAGU NO 271 SEQ ID AAAUUUUGGGCAGCGGUAAUGAGUU NO 272 SEQ ID AAUUUUGGGCAGCGGUAAUGAGUUC NO 273 SEQ ID AUUUUGGGCAGCGGUAAUGAGUUCU NO 274 SEQ ID UUUUGGGCAGCGGUAAUGAGUUCUU NO 275 SEQ ID UUUGGGCAGCGGUAAUGAGUUCUUC NO 276 SEQ ID NO UUGGGCAGCGGUAAUGAGUUCUUCC 277 SEQ ID NO UGGGCAGCGGUAAUGAGUUCUUCCA 278 SEQ ID NO GGGCAGCGGUAAUGAGUUCUUCCAA 279 SEQ ID NO GGCAGCGGUAAUGAGUUCUUCCAAC 280 SEQ ID NO GCAGCGGUAAUGAGUUCUUCCAACU 281 SEQ ID NO CAGCGGUAAUGAGUUCUUCCAACUG 282 SEQ ID NO AGCGGUAAUGAGUUCUUCCAACUGG 283 SEQ ID NO GCGGUAAUGAGUUCUUCCAACUGGG 284 SEQ ID NO CGGUAAUGAGUUCUUCCAACUGGGG 285 SEQ ID NO GGUAAUGAGUUCUUCCAACUGGGGA 286 SEQ ID NO GGUAAUGAGUUCUUCCAACUGG 287 SEQ ID NO GUAAUGAGUUCUUCCAACUGGGGAC 288 SEQ ID NO UAAUGAGUUCUUCCAACUGGGGACG 289 SEQ ID NO AAUGAGUUCUUCCAACUGGGGACGC 290 SEQ ID NO AUGAGUUCUUCCAACUGGGGACGCC 291 SEQ ID NO UGAGUUCUUCCAACUGGGGACGCCU 292 SEQ ID NO GAGUUCUUCCAACUGGGGACGCCUC 293 SEQ ID NO AGUUCUUCCAACUGGGGACGCCUCU 294 SEQ ID NO GUUCUUCCAACUGGGGACGCCUCUG 295 SEQ ID NO UUCUUCCAACUGGGGACGCCUCUGU 296 SEQ ID NO UCUUCCAACUGGGGACGCCUCUGUU 297 SEQ ID NO CUUCCAACUGGGGACGCCUCUGUUC 298 SEQ ID NO UUCCAACUGGGGACGCCUCUGUUCC 299 SEQ ID NO UCCAACUGGGGACGCCUCUGUUCCA 300 SEQ ID NO CCAACUGGGGACGCCUCUGUUCCAA 301 SEQ ID NO CAACUGGGGACGCCUCUGUUCCAAA 302 SEQ ID NO AACUGGGGACGCCUCUGUUCCAAAU 303 SEQ ID NO ACUGGGGACGCCUCUGUUCCAAAUC 304 SEQ ID NO CUGGGGACGCCUCUGUUCCAAAUCC 305 SEQ ID NO UGGGGACGCCUCUGUUCCAAAUCCU 306 SEQ ID NO GGGGACGCCUCUGUUCCAAAUCCUG 307 SEQ ID NO GGGACGCCUCUGUUCCAAAUCCUGC 308 SEQ ID NO GGACGCCUCUGUUCCAAAUCCUGCA 309 SEQ ID NO GACGCCUCUGUUCCAAAUCCUGCAU 310 -
TABLE 6 oligonucleotides for skipping DMD Gene Exon 53SEQ ID CUCUGGCCUGUCCUAAGACCUGCUC NO 311 SEQ ID UCUGGCCUGUCCUAAGACCUGCUCA NO 312 SEQ ID CUGGCCUGUCCUAAGACCUGCUCAG NO 313 SEQ ID UGGCCUGUCCUAAGACCUGCUCAGC NO 314 SEQ ID GGCCUGUCCUAAGACCUGCUCAGCU NO 315 SEQ ID GCCUGUCCUAAGACCUGCUCAGCUU NO 316 SEQ ID CCUGUCCUAAGACCUGCUCAGCUUC NO 317 SEQ ID CUGUCCUAAGACCUGCUCAGCUUCU NO 318 SEQ ID UGUCCUAAGACCUGCUCAGCUUCUU NO 319 SEQ ID GUCCUAAGACCUGCUCAGCUUCUUC NO 320 SEQ ID UCCUAAGACCUGCUCAGCUUCUUCC NO 321 SEQ ID CCUAAGACCUGCUCAGCUUCUUCCU NO 322 SEQ ID CUAAGACCUGCUCAGCUUCUUCCUU NO 323 SEQ ID UAAGACCUGCUCAGCUUCUUCCUUA NO 324 SEQ ID AAGACCUGCUCAGCUUCUUCCUUAG NO 325 SEQ ID AGACCUGCUCAGCUUCUUCCUUAGC NO 326 SEQ ID GACCUGCUCAGCUUCUUCCUUAGCU NO 327 SEQ ID ACCUGCUCAGCUUCUUCCUUAGCUU NO 328 SEQ ID CCUGCUCAGCUUCUUCCUUAGCUUC NO 329 SEQ ID CUGCUCAGCUUCUUCCUUAGCUUCC NO 330 SEQ ID UGCUCAGCUUCUUCCUUAGCUUCCA NO 331 SEQ ID GCUCAGCUUCUUCCUUAGCUUCCAG NO 332 SEQ ID CUCAGCUUCUUCCUUAGCUUCCAGC NO 333 SEQ ID UCAGCUUCUUCCUUAGCUUCCAGCC NO 334 SEQ ID NO CAGCUUCUUCCUUAGCUUCCAGCCA 335 SEQ ID NO AGCUUCUUCCUUAGCUUCCAGCCAU 336 SEQ ID NO GCUUCUUCCUUAGCUUCCAGCCAUU 337 SEQ ID NO CUUCUUCCUUAGCUUCCAGCCAUUG 338 SEQ ID NO UUCUUCCUUAGCUUCCAGCCAUUGU 339 SEQ ID NO UCUUCCUUAGCUUCCAGCCAUUGUG 340 SEQ ID NO CUUCCUUAGCUUCCAGCCAUUGUGU 341 SEQ ID NO UUCCUUAGCUUCCAGCCAUUGUGUU 342 SEQ ID NO UCCUUAGCUUCCAGCCAUUGUGUUG 343 SEQ ID NO CCUUAGCUUCCAGCCAUUGUGUUGA 344 SEQ ID NO CUUAGCUUCCAGCCAUUGUGUUGAA 345 SEQ ID NO UUAGCUUCCAGCCAUUGUGUUGAAU 346 SEQ ID NO UAGCUUCCAGCCAUUGUGUUGAAUC 347 SEQ ID NO AGCUUCCAGCCAUUGUGUUGAAUCC 348 SEQ ID NO GCUUCCAGCCAUUGUGUUGAAUCCU 349 SEQ ID NO CUUCCAGCCAUUGUGUUGAAUCCUU 350 SEQ ID NO UUCCAGCCAUUGUGUUGAAUCCUUU 351 SEQ ID NO UCCAGCCAUUGUGUUGAAUCCUUUA 352 SEQ ID NO CCAGCCAUUGUGUUGAAUCCUUUAA 353 SEQ ID NO CAGCCAUUGUGUUGAAUCCUUUAAC 354 SEQ ID NO AGCCAUUGUGUUGAAUCCUUUAACA 355 SEQ ID NO GCCAUUGUGUUGAAUCCUUUAACAU 356 SEQ ID NO CCAUUGUGUUGAAUCCUUUAACAUU 357 SEQ ID NO CAUUGUGUUGAAUCCUUUAACAUUU 358 -
TABLE 7 oligonucleotides for skipping other exons of the DMD gene as identified DMD Gene Exon 6 SEQ ID CAUUUUUGACCUACAUGUGG NO 359 SEQ ID UUUGACCUACAUGUGGAAAG NO 360 SEQ ID UACAUUUUUGACCUACAUGUGGAA NO 361 AG SEQ ID GGUCUCCUUACCUAUGA NO 362 SEQ ID UCUUACCUAUGACUAUGGAUGAGA NO 363 SEQ ID NO AUUUUUGACCUACAUGGGAAA G 364 SEQ ID NO UACGAGUUGAUUGUCGGACCCAG 365 SEQ ID NO GUGGUCUCCUUACCUAUGACUGUGG 366 SEQ ID NO UGUCUCAGUAAUCUUCUUACCUAU 367 DMD Gene Exon 7 SEQ ID UGCAUGUUCCAGUCGUUGUGUGG NO 368 SEQ ID CACUAUUCCAGUCAAAUAGGUCUGG NO 369 SEQ ID NO 370 AUUUACCAACCUUCAGGAUCGAGU A SEQ ID NO 371 GGCCUAAAACACAUACACAUA DMD Gene Exon 11 SEQ ID CCCUGAGGCAUUCCCAUCUUGAAU NO 372 SEQ ID AGGACUUACUUGCUUUGUUU NO 373 SEQ ID CUUGAAUUUAGGAGAUUCAUCU NO 374 G SEQ ID CAUCUUCUGAUAAUUUUCCUGUU NO 375 DMD Gene Exon 17 SEQ ID CCAUUACAGUUGUCUGUGUU NO 376 SEQ ID UGACAGCCUGUGAAAUCUGUGAG NO 377 SEQ ID UAAUCUGCCUCUUCUUUUGG NO 378 DMD Gene Exon 19 SEQ ID CAGCAGUAGUUGUCAUCUGC NO 379 SEQ ID GCCUGAGCUGAUCUGCUGGCAUCUUGC NO 380 SEQ ID GCCUGAGCUGAUCUGCUGGCAUC NO 381 UUGCAGUU SEQ ID UCUGCUGGCAUCUUGC NO 382 DMD Gene Exon 21 SEQ ID GCCGGUUGACUUCAUCCUGUGC NO 383 SEQ ID GUCUGCAUCCAGGAACAUGGGUC NO 384 SEQ ID UACUUACUGUCUGUAGCUCUUUCU NO 385 SEQ ID CUGCAUCCAGGAACAUGGGUCC NO 386 SEQ ID GUUGAAGAUCUGAUAGCCGGUUGA NO 387 DMD Gene Exon 44 SEQ ID UCAGCUUCUGUUAGCCACUG NO 388 SEQ ID UUCAGCUUCUGUUAGCCACU NO 389 SEQ ID UUCAGCUUCUGUUAGCCACUG NO 390 SEQ ID UCAGCUUCUGUUAGCCACUGA NO 391 SEQ ID UUCAGCUUCUGUUAGCCACUGA NO 392 SEQ ID UCAGCUUCUGUUAGCCACUGA NO 393 SEQ ID UUCAGCUUCUGUUAGCCACUGA NO 394 SEQ ID UCAGCUUCUGUUAGCCACUGAU NO 395 SEQ ID UUCAGCUUCUGUUAGCCACUGAU NO 396 SEQ ID UCAGCUUCUGUUAGCCACUGAUU NO 397 SEQ ID UUCAGCUUCUGUUAGCCACUGAUU NO 398 SEQ ID UCAGCUUCUGUUAGCCACUGAUUA NO 399 SEQ ID UUCAGCUUCUGUUAGCCACUGAUA NO 400 SEQ ID UCAGCUUCUGUUAGCCACUGAUUAA NO 401 SEQ ID UUCAGCUUCUGUUAGCCACUGAUUAA NO 402 SEQ ID UCAGCUUCUGUUAGCCACUGAUUAAA NO 403 SEQ ID UUCAGCUUCUGUUAGCCACUGAUUAAA NO 404 SEQ ID CAGCUUCUGUUAGCCACUG NO 405 SEQ ID CAGCUUCUGUUAGCCACUGAU NO 406 SEQ ID AGCUUCUGUUAGCCACUGAUU NO 407 SEQ ID CAGCUUCUGUUAGCCACUGAUU NO 408 SEQ ID AGCUUCUGUUAGCCACUGAUUA NO 409 SEQ ID CAGCUUCUGUUAGCCACUGAUUA NO 410 SEQ ID AGCUUCUGUUAGCCACUGAUUAA NO 411 SEQ ID CAGCUUCUGUUAGCCACUGAUUAA NO 412 SEQ ID AGCUUCUGUUAGCCACUGAUUAAA NO 413 SEQ ID CAGCUUCUGUUAGCCACUGAUUAAA NO 414 SEQ ID AGCUUCUGUUAGCCACUGAUUAAA NO 415 SEQ ID AGCUUCUGUUAGCCACUGAU NO 416 SEQ ID GCUUCUGUUAGCCACUGAUU NO 417 SEQ ID AGCUUCUGUUAGCCACUGAUU NO 418 SEQ ID GCUUCUGUUAGCCACUGAUUA NO 419 SEQ ID AGCUUCUGUUAGCCACUGAUUA NO 420 SEQ ID GCUUCUGUUAGCCACUGAUUAA NO 421 SEQ ID AGCUUCUGUUAGCCACUGAUUAA NO 422 SEQ ID GCUUCUGUUAGCCACUGAUUAAA NO 423 SEQ ID AGCUUCUGUUAGCCACUGAUUAAA NO 424 SEQ ID GCUUCUGUUAGCCACUGAUUAAA NO 425 SEQ ID CCAUUUGUAUUUAGCAUGUUCCC NO 426 SEQ ID AGAUACCAUUUGUAUUUAGC NO 427 SEQ ID GCCAUUUCUCAACAGAUCU NO 428 SEQ ID GCCAUUUCUCAACAGAUCUGUCA NO 429 SEQ ID AUUCUCAGGAAUUUGUGUCUUUC NO 430 SEQ ID UCUCAGGAAUUUGUGUCUUUC NO 431 SEQ ID GUUCAGCUUCUGUUAGCC NO 432 SEQ ID CUGAUUAAAUAUCUUUAUAU C NO 433 SEQ ID GCCGCCAUUUCUCAACAG NO 434 SEQ ID GUAUUUAGCAUGUUCCCA NO 435 SEQ ID CAGGAAUUUGUGUCUUUC NO 436 DMD Gene Exon 45 SEQ ID UUUGCCGCUGCCCAAUGCCAUCCUG NO 437 SEQ ID AUUCAAUGUUCUGACAACAGUUUGC NO 438 SEQ ID CCAGUUGCAUUCAAUGUUCUGACAA NO 439 SEQ ID CAGUUGCAUUCAAUGUUCUGAC NO 440 SEQ ID AGUUGCAUUCAAUGUUCUGA NO 441 SEQ ID GAUUGCUGAAUUAUUUCUUCC NO 442 SEQ ID GAUUGCUGAAUUAUUUCUUCCCCAG NO 443 SEQ ID AUUGCUGAAUUAUUUCUUCCCCAGU NO 444 SEQ ID UUGCUGAAUUAUUUCUUCCCCAGUU NO 445 SEQ ID UGCUGAAUUAUUUCUUCCCCAGUUG NO 446 SEQ ID GCUGAAUUAUUUCUUCCCCAGUUGC NO 447 SEQ ID CUGAAUUAUUUCUUCCCCAGUUGCA NO 448 SEQ ID UGAAUUAUUUCUUCCCCAGUUGCAU NO 449 SEQ ID GAAUUAUUUCUUCCCCAGUUGCAUU NO 450 SEQ ID AAUUAUUUCUUCCCCAGUUGCAUUC NO 451 SEQ ID AUUAUUUCUUCCCCAGUUGCAUUCA NO 452 SEQ ID UUAUUUCUUCCCCAGUUGCAUUCAA NO 453 SEQ ID UAUUUCUUCCCCAGUUGCAUUCAAU NO 454 SEQ ID AUUUCUUCCCCAGUUGCAUUCAAUG NO 455 SEQ ID UUUCUUCCCCAGUUGCAUUCAAUGU NO 456 SEQ ID UUCUUCCCCAGUUGCAUUCAAUGUU NO 457 SEQ ID UCUUCCCCAGUUGCAUUCAAUGUUC NO 458 SEQ ID CUUCCCCAGUUGCAUUCAAUGUUCU NO 459 SEQ ID UUCCCCAGUUGCAUUCAAUGUUCUG NO 460 SEQ ID UCCCCAGUUGCAUUCAAUGUUCUGA NO 461 SEQ ID CCCCAGUUGCAUUCAAUGUUCUGAC NO 462 SEQ ID CCCAGUUGCAUUCAAUGUUCUGACA NO 463 SEQ ID CCAGUUGCAUUCAAUGUUCUGACAA NO 464 SEQ ID CAGUUGCAUUCAAUGUUCUGACAAC NO 465 SEQ ID AGUUGCAUUCAAUGUUCUGACAACA NO 466 SEQ ID UCC UGU AGA AUA CUG GCA UC NO 467 SEQ ID UGCAGACCUCCUGCCACCGCAGAUUCA NO 468 SEQ ID UUGCAGACCUCCUGCCACCGCAGAUUCAGGC NO 469 UUC SEQ ID GUUGCAUUCAAUGUUCUGACAACAG NO 470 SEQ ID UUGCAUUCAAUGUUCUGACAACAGU NO 471 SEQ ID UGCAUUCAAUGUUCUGACAACAGUU NO 472 SEQ ID GCAUUCAAUGUUCUGACAACAGUUU NO 473 SEQ ID CAUUCAAUGUUCUGACAACAGUUUG NO 474 SEQ ID AUUCAAUGUUCUGACAACAGUUUGC NO 475 SEQ ID UCAAUGUUCUGACAACAGUUUGCCG NO 476 SEQ ID CAAUGUUCUGACAACAGUUUGCCGC NO 477 SEQ ID AAUGUUCUGACAACAGUUUGCCGCU NO 478 SEQ ID AUGUUCUGACAACAGUUUGCCGCUG NO 479 SEQ ID UGUUCUGACAACAGUUUGCCGCUGC NO 480 SEQ ID GUUCUGACAACAGUUUGCCGCUGCC NO 481 SEQ ID UUCUGACAACAGUUUGCCGCUGCCC NO 482 SEQ ID UCUGACAACAGUUUGCCGCUGCCCA NO 483 SEQ ID CUGACAACAGUUUGCCGCUGCCCAA NO 484 SEQ ID UGACAACAGUUUGCCGCUGCCCAAU NO 485 SEQ ID GACAACAGUUUGCCGCUGCCCAAUG NO 486 SEQ ID ACAACAGUUUGCCGCUGCCCAAUGC NO 487 SEQ ID CAACAGUUUGCCGCUGCCCAAUGCC NO 488 SEQ ID AACAGUUUGCCGCUGCCCAAUGCCA NO 489 SEQ ID ACAGUUUGCCGCUGCCCAAUGCCAU NO 490 SEQ ID CAGUUUGCCGCUGCCCAAUGCCAUC NO 491 SEQ ID AGUUUGCCGCUGCCCAAUGCCAUCC NO 492 SEQ ID GUUUGCCGCUGCCCAAUGCCAUCCU NO 493 SEQ ID UUUGCCGCUGCCCAAUGCCAUCCUG NO 494 SEQ ID UUGCCGCUGCCCAAUGCCAUCCUGG NO 495 SEQ ID UGCCGCUGCCCAAUGCCAUCCUGGA NO 496 SEQ ID GCCGCUGCCCAAUGCCAUCCUGGAG NO 497 SEQ ID CCGCUGCCCAAUGCCAUCCUGGAGU NO 498 SEQ ID CGCUGCCCAAUGCCAUCCUGGAGUU NO 499 SEQ ID UGUUUUUGAGGAUUGCUGAA NO 500 SEQ ID UGUUCUGACAACAGUUUGCCGCU NO 501 GCCCAAUGCCAUCCUGG DMD Gene Exon 55 SEQ ID CUGUUGCAGUAAUCUAUGAG NO 502 SEQ ID UGCAGUAAUCUAUGAGUUUC NO 503 SEQ ID GAGUCUUCUAGGAGCCUU NO 504 SEQ ID UGCCAUUGUUUCAUCAGCUCUUU NO 505 SEQ ID UCCUGUAGGACAUUGGCAGU NO 506 SEQ ID CUUGGAGUCUUCUAGGAGCC NO 507 DMD Gene Exon 57 SEQ ID UAGGUGCCUGCCGGCUU NO 508 SEQ ID UUCAGCUGUAGCCACACC NO 509 SEQ ID CUGAACUGCUGGAAAGUCGCC NO 510 SEQ ID CUGGCUUCCAAAUGGGACCUGAA NO 511 AAAGAAC DMD Gene Exon 59 SEQ ID CAAUUUUUCCCACUCAGUAUU NO 512 SEQ ID UUGAAGUUCCUGGAGUCUU NO 513 SEQ ID UCCUCAGGAGGCAGCUCUAAAU NO 514 DMD Gene Exon 62 SEQ ID UGGCUCUCUCCCAGGG NO 515 SEQ ID GAGAUGGCUCUCUCCCAGGGACCCUGG NO 516 SEQ ID GGGCACUUUGUUUGGCG NO 517 DMD Gene Exon 63 SEQ ID GGUCCCAGCAAGUUGUUUG NO 518 SEQ ID UGGGAUGGUCCCAGCAAGUUGUUUG NO 519 SEQ ID GUAGAGCUCUGUCAUUUUGGG NO 520 DMD Gene Exon 65 SEQ ID GCUCAAGAGAUCCACUGCAAAAAAC NO 521 SEQ ID GCCAUACGUACGUAUCAUAAACAUUC NO 522 SEQ ID UCUGCAGGAUAUCCAUGGGCUGGUC NO 523 DMD Gene Exon 66 SEQ ID GAUCCUCCCUGUUCGUCCCCUAUUAUG NO 524 DMD Gene Exon 69 SEQ ID UGCUUUAGACUCCUGUACCUGAUA NO 525 DMD Gene Exon 75 SEQ ID GGCGGCCUUUGUGUUGAC NO 526 SEQ ID GGACAGGCCUUUAUGUUCGUGCUGC NO 527 SEQ ID CCUUUAUGUUCGUGCUGCU NO 528 -
FIG. 1 . In human control myotubes, a series of AONs (PS237, PS238, and PS240;SEQ ID NO 65, 66, 16 respectively) targetingexon 43 was tested at 500 nM. PS237 - (SEQ ID NO 65) reproducibly induced highest levels of
exon 43 skipping. (M: DNA size marker; NT: non-treated cells) -
FIG. 2 . In myotubes from a DMD patient with an exon 45 deletion, a series of AONs (PS177, PS179, PS181, and PS182;SEQ ID NO 91, 70, 110, and 117 respectively) targetingexon 46 was tested at two different concentrations (50 and 150 nM). PS182 (SEQ ID NO 117) reproducibly induced highest levels ofexon 46 skipping. (M: DNA size marker) -
FIG. 3 . In human control myotubes, a series of AONs (PS245, PS246, PS247, and PS248; SEQ ID NO 167, 165, 166, and 127 respectively) targetingexon 50 was tested at 500 nM. PS248 (SEQ ID NO 127) reproducibly induced highest levels ofexon 50 skipping. (M: DNA size marker; NT: non-treated cells). -
FIG. 4 . In human control myotubes, two novel AONs (PS232 and PS236; SEQ ID NO 246 and 299 respectively) targetingexon 52 were tested at two different concentrations (200 and 500 nM) and directly compared to a previously described AON (52-1). PS236 (SEQ ID NO 299) reproducibly induced highest levels ofexon 52 skipping. (M: DNA size marker; NT: non-treated cells).
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US17/129,117 US20210139904A1 (en) | 2007-10-26 | 2020-12-21 | Methods and means for efficient skipping of at least one of the following exons of the human duchenne muscular dystrophy gene: 43, 46, 50-53 |
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