WO2004026343A1 - 部位特異的遺伝子変換促進剤および遺伝子疾患治療剤 - Google Patents
部位特異的遺伝子変換促進剤および遺伝子疾患治療剤 Download PDFInfo
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Classifications
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- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N15/00—Mutation or genetic engineering; DNA or RNA concerning genetic engineering, vectors, e.g. plasmids, or their isolation, preparation or purification; Use of hosts therefor
- C12N15/09—Recombinant DNA-technology
- C12N15/87—Introduction of foreign genetic material using processes not otherwise provided for, e.g. co-transformation
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K67/00—Rearing or breeding animals, not otherwise provided for; New or modified breeds of animals
- A01K67/027—New or modified breeds of vertebrates
- A01K67/0275—Genetically modified vertebrates, e.g. transgenic
- A01K67/0276—Knock-out vertebrates
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- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/70—Carbohydrates; Sugars; Derivatives thereof
- A61K31/7088—Compounds having three or more nucleosides or nucleotides
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- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K47/00—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient
- A61K47/30—Macromolecular organic or inorganic compounds, e.g. inorganic polyphosphates
- A61K47/42—Proteins; Polypeptides; Degradation products thereof; Derivatives thereof, e.g. albumin, gelatin or zein
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- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K48/00—Medicinal preparations containing genetic material which is inserted into cells of the living body to treat genetic diseases; Gene therapy
- A61K48/0008—Medicinal preparations containing genetic material which is inserted into cells of the living body to treat genetic diseases; Gene therapy characterised by an aspect of the 'non-active' part of the composition delivered, e.g. wherein such 'non-active' part is not delivered simultaneously with the 'active' part of the composition
- A61K48/0025—Medicinal preparations containing genetic material which is inserted into cells of the living body to treat genetic diseases; Gene therapy characterised by an aspect of the 'non-active' part of the composition delivered, e.g. wherein such 'non-active' part is not delivered simultaneously with the 'active' part of the composition wherein the non-active part clearly interacts with the delivered nucleic acid
- A61K48/0041—Medicinal preparations containing genetic material which is inserted into cells of the living body to treat genetic diseases; Gene therapy characterised by an aspect of the 'non-active' part of the composition delivered, e.g. wherein such 'non-active' part is not delivered simultaneously with the 'active' part of the composition wherein the non-active part clearly interacts with the delivered nucleic acid the non-active part being polymeric
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- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K48/00—Medicinal preparations containing genetic material which is inserted into cells of the living body to treat genetic diseases; Gene therapy
- A61K48/005—Medicinal preparations containing genetic material which is inserted into cells of the living body to treat genetic diseases; Gene therapy characterised by an aspect of the 'active' part of the composition delivered, i.e. the nucleic acid delivered
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- A—HUMAN NECESSITIES
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- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P43/00—Drugs for specific purposes, not provided for in groups A61P1/00-A61P41/00
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N15/00—Mutation or genetic engineering; DNA or RNA concerning genetic engineering, vectors, e.g. plasmids, or their isolation, preparation or purification; Use of hosts therefor
- C12N15/09—Recombinant DNA-technology
- C12N15/87—Introduction of foreign genetic material using processes not otherwise provided for, e.g. co-transformation
- C12N15/90—Stable introduction of foreign DNA into chromosome
- C12N15/902—Stable introduction of foreign DNA into chromosome using homologous recombination
- C12N15/907—Stable introduction of foreign DNA into chromosome using homologous recombination in mammalian cells
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K2217/00—Genetically modified animals
- A01K2217/07—Animals genetically altered by homologous recombination
- A01K2217/075—Animals genetically altered by homologous recombination inducing loss of function, i.e. knock out
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K2227/00—Animals characterised by species
- A01K2227/10—Mammal
- A01K2227/105—Murine
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K2267/00—Animals characterised by purpose
- A01K2267/03—Animal model, e.g. for test or diseases
Definitions
- the present invention relates to a new use of collagen, and more particularly, to a promoter for site-specific gene conversion of genomic genes, which contains collagen and oligonucleotides.
- Gene therapy has great promise as a fundamental method for treating genetic diseases caused by mutations or deletions in genes.
- a gene encoding a protein required for treatment is introduced into cells using a vinoresbetter, V-posome vector, plasmid DNA vector, or the like, and incorporated into the genomic gene of the cell.
- Attempts have been made to express proteins by using these methods, but there are few cases where satisfactory therapeutic effects can be obtained. This is because 1) it is difficult to express a gene of large size that encodes the entire protein in winoressetter or plasmid DNA, and 2) the gene to be introduced is integrated into the genomic gene.
- Retrovirus vectors integrate the gene to be introduced into unspecified positions in the genomic gene. 4) If a virus vector is used, a virus-derived protein is produced, and an immune response to this protein is induced to cause side effects.5) In addition, promoters are thought to be due to the high specificity of cells, which limits the number of cells that can express genes. Are (Li- Wen Lai et al., "Experimen” tal Nephrology "1999 seventh Certificates, p. 11-14).
- FAP familial amyloidotic polyneuropathy
- T.R transthyretin
- apolipoprotein AI apolipoprotein AI
- gelsolin as precursor proteins
- amyloid is expressed in various organs and tissues.
- FAP type in which atypical TTR composed of 127 amino acids and mutated to the 30th noline in TTR to methionine becomes amyloid, causing organ damage I (FAP
- ATTR Va 1 3 OMet is used for polyneuritis with limb sensory disturbances and motor neuropathy, autonomic nervous disorders such as lightheadedness, sweating, decreased lacrimal secretion, gastrointestinal symptoms such as diarrhea and constipation, heart and kidney. It is hereditary amyloidosis with autosomal dominant inheritance, whose main symptom is damage to organs such as the eyes. It is a disease of poor prognosis that occurs in the 20s and 30s and results in death after about 10 years (Benson et al., “Trends in Neurosciences”, Vol. 12, 1989, ⁇ ⁇ 88- 92).
- liver transplantation Since TTR, the causative protein of FAP, is mainly produced in monthly collections, liver transplantation has become a treatment for FAP. Because liver transplantation stops progression of FAP symptoms and improves some autonomic nervous symptoms, suppressing the production of atypical TTR in the liver may be an effective treatment for FAP. It was revealed. However, adapting liver transplantation to all patients is not possible for a variety of reasons. In addition, since the production of atypical TTR in the retina is not suppressed, there is a problem that eye lesions may progress even after liver transplantation. Therefore, as an alternative treatment, it is considered essential to establish a gene therapy that suppresses the production of atypical TTR in the liver and retina.
- the Human Genome Project has made it possible to read the entire human gene sequence, and found that there are many single nucleotide variations among individuals, and this single nucleotide variation can lead to disease morbidity and drug susceptibility. It is becoming clear that this has a significant effect on Therefore, in order to put gene therapy to practical use, it is necessary to establish a technology that corrects specific single nucleotide mutations on genomic genes. '
- RNA—DNA texture This method using a la-oligonucleotide is a method of mutating a genomic gene by introducing an oligonucleotide that forms a double strand with the region of the gene to be mutated into the cell and causing homologous recombination with the genomic gene. Oligonucleotides were introduced into lymphoblasts to mutate the gene for B-globin, a gene responsible for sickle cell anemia, a genetic disease. Since this report, it has been demonstrated that gene mutations targeting specific bases can be performed in various cells using oligonucleotides. Furthermore, in vivo, Kren et al.
- yeast Sacharomyces cerevisiae
- yeast Sacharomyces cerevisiae
- the present invention provides a preparation that promotes localization in the nucleus by efficiently introducing an oligonucleotide into a cell, a preparation that promotes conversion of a base sequence of a target genomic gene, and a therapeutic agent for a genetic disease.
- the purpose is to do.
- the present inventors have been engaged in research on the onset, pathophysiology, and treatment method of patients with familial amyloid polyneuropathy (FAP) for many years, and a point mutation in the transthyretin (TTR) gene has changed the thirty-three palin of TTR to methionine.
- FAP familial amyloid polyneuropathy
- TTR transthyretin
- AT TV a 13 OM et has intensively studied gene therapy for FAP and mutated into FAP and other various genetic diseases.
- the present inventors have found a preparation which is also effective for site-specific gene conversion, and have completed the present invention.
- the gist of the present invention is as follows.
- a site-specific gene conversion promoter comprising at least collagen and an oligonucleotide for gene conversion
- the collagen is preferably water-soluble collagen, and the water-soluble collagen is preferably atelocollagen.
- the oligonucleotide for gene conversion is an oligonucleotide consisting of at least 20 bases, and specifically, it is preferable that the oligonucleotide is an RNAZDNA chimeric oligonucleotide or a DNA oligonucleotide.
- the oligonucleotide for gene conversion is an oligonucleotide having a base sequence that forms a Ptson 'Crick-type base pair including a mismatch base pair of 1 to 3 base pairs with the sense strand or antisense strand of the gene to be converted.
- the oligonucleotide for gene conversion comprises a nucleotide sequence forming a Ptson 'Crick base pair including a deletion or insertion of 1 to 3 bases with a sense strand or antisense strand of the gene to be converted.
- the mismatched pair is located at the center of the oligonucleotide, or the deletion or insertion of the base is preferably located at the center of the oligonucleotide.
- the accelerator or therapeutic agent is preferably in the form of a solution, containing phosphate in the range of 0.01M to 0.1M, and sodium salt in the range of 0.07M to 0.14M. It is preferable to contain in the range,
- the dosage form of the promoter or therapeutic agent is solid.
- the oligonucleotide for gene conversion and collagen is a particulate aggregate, and the major axis of the particulate aggregate is 300 ⁇ . ! Preferably ⁇ 50 jum,
- Solution form of the promoter or therapeutic agent is contained in an amount in the range of collagen from 0.01 to 1.0 wt 0/0, or collagen 0.01 to 0. It contains a range of 25 weight 0/0 Is preferred,
- Collagen is dissolved in a solution containing 0.01M to 0.1M phosphate and 0.07M to 0.14M sodium salt, and added to the same concentration of phosphate and the same concentration.
- a sodium salt-containing oligonucleotide solution for gene conversion site-specific gene conversion enhancement obtained by stirring at a temperature of! ⁇ 10 ° C Enhancer or gene therapy agent, ''
- a method for arbitrarily converting a specific base on a genomic gene in the nucleus of a cell comprising contacting the cell with the gene conversion promoter, wherein the cell is a mammalian cell, yeast or Preferably a fungus,
- a promoter for nuclear localization of an oligonucleotide comprising at least collagen and an oligonucleotide
- the nuclear localization accelerator preferably contains phosphate in the range of 0.01M to 0.1M, and preferably contains sodium salt in the range of 0.07M to 0.14M.
- the nucleotide and the collagen are a particulate aggregate, and the major axis of the particulate aggregate is 300 nm to 50 ⁇ m,
- the nuclear localization promoter collagen 0. 01:. 1. It comprises in the range of 0 wt%, or 0.1 collagen 05-0 and child contained in an amount of 25 weight 0/0 Is preferred,
- a method of contacting cells in the body and converting the genes of the cells is produced by administering a composition containing at least collagen and an oligonucleotide for gene conversion via P, nasal, pulmonary, intraportal, intramuscular, subcutaneous, subcutaneous, rising surface, organ, or transdermal.
- FIG. 1 shows the structures of an RNAZ DNA chimeric oligonucleotide and a DNA oligonucleotide.
- RNAZDNA chimeric oligonucleotide (a) RNAZDNA chimeric oligonucleotide, (b) 25mer DNA oligonucleotide, (c) 45mer DNA oligonucleotide, (d) 71 ⁇ 2er DNA oligonucleotide.
- the thigh (lowercase) of the RNA / DNA chimeric oligonucleotide is 2, -0-methyl-RA, and the three bases (*) from both ends of the DNA oligonucleotide are phosphorothioate, preventing degradation.
- Fig. 2 shows micrographs (a) and (b) showing the incorporation of atelocollagen-embedded DNA oligonucleotide into HepG2 cells, and the results for HVJ-ribosome-encapsulated DNA oligonucleotide for comparison. It is a micrograph (c). The magnification is All are 100 times larger.
- FIG. 3 is a microscopic photograph showing the '14 shape of atelocollagen-embedded DNA oligonucleotide.
- FIG. 4 is a graph showing the results of mass spectrometry of transthyretin in the serum of transgenic mice showing normal transthyretin production by atelocollagen-embedded DNA oligonucleotide.
- transthyretin extracted from serum of untreated transgenic mice B: transthyretin extracted from serum of transgenic mice to which atelocollagen-embedded DNA oligonucleotide was administered
- the first aspect of the present invention relates to a site-specific gene conversion promoter comprising at least collagen and an oligonucleotide for gene conversion.
- “collagen” means any “collagen” usually used in the medical field, cosmetic field, industrial field and food field.
- the collagen it is preferable to use K-soluble or solubilized collagen. 7 Soluble collagen is soluble in acidic or neutral water or salt solution, and soluble collagen is an enzyme-soluble collagen that is solubilized by an enzyme, It is preferable that there are an acid-soluble collagen and an alkali-soluble collagen that is soluble by an alkali, and both can pass through a membrane filter having a pore size of 1 micrometer.
- the water solubility of collagen depends on the degree of cross-linking of collagen, and the higher the degree of cross-linking, the more insoluble the collagen.
- the degree of cross-linking of collagen used in the present invention is preferably, for example, trimers or less, and more preferably Preferably it is a dimer or less.
- the molecular weight of collagen is, for example, preferably from about 300,000 to about 900,000, and more preferably from about 300,000 to about 600,000.
- Collagen can be used as extracted from any animal species, but is preferably extracted from vertebrates, more preferably extracted from mammals, birds and fish, more preferably mammals having a high denaturation temperature, Collagen extracted from birds is desirable. Any type of collagen Lagen may be used, but I-V type is preferred because of its abundance in the animal body.
- type I collagen extracted from mammalian dermis by acid and more preferably, type I collagen extracted from calf dermis by acid, types I and III produced by genetic engineering Collagen and the like.
- Collagen whose side chains have been modified, cross-linked collagen, or the like can be used as necessary.
- collagen having a modified side chain include succininated or methylated collagen
- cross-linked collagen include collagen treated with daltaraldehyde, hexamethylene diisoanatate, or a polyepoxy compound.
- the collagen may be mixed with other biocompatible materials.
- Biocompatible materials include, for example, gelatin, fibrin, anolevumin, hyaluronic acid, heparin, chondroitin sulfate, chitin, chitosan, alginic acid, pectin, agarose, hydroxyapatite, polypropylene, polyethylene, polydimethinolesiloxane, or glycolic acid.
- a lactic acid or amino acid polymer or a copolymer thereof, or a mixture of two or more of these biocompatible materials is exemplified.
- the “oligonucleotide for gene conversion” in the present invention is a single-stranded nucleotide having a length and a base sequence sufficient to convert a genomic gene.
- the length of the oligonucleotide is preferably at least 20 bases, more preferably 25 to 100 bases, and still more preferably 30 to 75 bases.
- the oligonucleotide is preferably an RNA / DNA chimeric oligonucleotide or a DNA oligonucleotide from the viewpoint of gene conversion efficiency, and more preferably a DNA oligonucleotide from the viewpoint of ease of synthesis and purification.
- the oligonucleotide may have one or more nucleic acid analogs in the molecule to increase stability to nucleases in vivo or in cells.
- Nucleic acid analogs are designed to inhibit the degradation of DNA or RA chains by enzymes. Analogs.
- a phosphorothioate in which the oxygen atom of the phosphodiester binding site is substituted with one a methylphosphonate in which the methyl group is substituted, or a phospholipid amidate in which the amine group is substituted, or a phosphodiester in which the phosphoryl diester binding site is substituted
- LNA Locked nucleic acid
- the number of nucleic acid analogs contained in the oligonucleotide is represented by a phosphorothioate-type nucleic acid analog
- the number of phosphorothioate bonds is preferably about 4 to 6. It is desirable that the phosphorothioate bond is introduced on both sides at least three bases away from the base to be mutated. When the base is approached to the base to be mutated, the conversion efficiency of the gene tends to decrease. More preferably, two or more bases are continuous at both terminal sites of the oligonucleotide.
- the oligonucleotide may have a base moiety chemically modified.
- the design of the oligonucleotide includes a sense sequence or an antisense strand of the gene to be converted, and a base sequence that forms a Ptson'-click-type base pair including a mismatch base pair of 1 to 3 base pairs almost at the center. It is preferable to use an oligonucleotide.
- a base sequence of 20 bases or more of the genomic gene to be converted is selected, the base sequence of 1 to 3 bases located inside the sequence is replaced with a desired base sequence, and the remaining base sequence is replaced with Watson's base sequence.
- the complementary sequence may be for the sense strand or the antisense strand of the genomic gene, but is more preferably for the sense strand.
- the base pair contains a mismatch of 1-3 base pairs in the base pair.
- the mismatch pair is more preferably located at the center of the oligonucleotide.
- site-specific repair of a mutation of 1 to 3 bases in a genomic gene or conversely, site-specific introduction of a mutation of 1 to 3 bases in a genomic gene be able to.
- the mutation may be continuous or discontinuous.
- the design of the oligonucleotide for gene conversion comprises the step of forming a Watson-Crick base pair including a deletion or insertion of 1 to 3 bases with a sense strand or antisense strand of the gene to be converted. It is preferable that the oligonucleotide is a containing oligonucleotide.
- a base sequence of 20 bases or more of the genomic gene to be converted is selected, and a base sequence of 1 to 3 bases located inside the sequence is deleted, or 1 to 3 bases are placed inside the sequence.
- an oligonucleotide in which the base sequence is inserted and the remaining base sequence is designed to be a complementary sequence that forms a Ptson'Crick-type base pair (ie, a double strand).
- the complementary sequence may be one for the sense strand of the genomic gene or one that blocks the antisense strand, but more preferably for the sense strand.
- the base pair contains a loop of 1 to 3 bases. In order to increase the gene conversion efficiency, it is more preferable that the loop is located at the center of the oligonucleotide.
- site-specific deletion of a mutation of 1 to 3 bases in a genomic gene or insertion of a site-specific mutation of 1 to 3 bases in a genomic gene can do.
- the mutation may be continuous or discontinuous.
- RNAZDNA chimeric oligonucleotide is performed by, for example, as shown in Fig. 1 (a), with the sense strand and the antisense strand with Watson. And an arbitrary intervening sequence portion that does not form a base pair can be selected as a continuous base sequence.
- Methods for designing RNA / DNA chimeric oligonucleotides are disclosed, for example, in US 5,731,181, US 5,756,325.
- a second aspect of the present invention provides at least collagen and an oligonucleate for gene conversion.
- the present invention relates to an agent for treating a site-specific genetic disease, which comprises otide.
- the collagen and the oligonucleotide for gene conversion contained in the therapeutic agent for genetic diseases of the present invention are the same as the collagen and the oligonucleotide for gene conversion contained in the gene conversion promoter.
- the dosage forms of the site-specific gene conversion promoter and the therapeutic agent for genetic diseases of the present invention include solution, suspension, gel, film, and solid.
- the drug When performing treatment targeting cells in the whole body, the drug is preferably in the form of a solution or suspension so that it can be administered intravascularly.
- the possibility of unexpected side effects is minimized. Therefore, even when an oligonucleotide that does not perform gene conversion is used in normal cells, it is considered that it is not preferable to introduce the oligonucleotide into a cell that does not require gene conversion.
- oligonucleotide in the preparation of the present invention causes a gene mutation
- the mechanism by which the oligonucleotide in the preparation of the present invention causes a gene mutation is thought to be due to homologous recombination between the oligonucleotide and the gene or mismatch repair due to the formation of a hybrid between the oligonucleotide and the gene. Either is not clear. However, regardless of the mechanism, it is necessary for the oligonucleotide and the gene to form a hybrid at the portion targeted by the oligonucleotide.
- genes form stable duplexes and interact with histones to concentrate in the nucleus at high density. Therefore, it is not expected that a foreign oligonucleotide will dissociate the double strand of the gene and form a hybrid with the target gene strand. Therefore, in order for the oligonucleotide in the preparation of the present invention to form a hybrid with the target gene chain to cause the target gene mutation, replication of the gene accompanying cell division during the period in which the oligonucleotide is present in the nucleus, or Gene transcription associated with protein production requires dissociation of the gene duplex.
- the formulation of the present invention in the form of a solution, suspension, or gel is desirably isotonic with cells.
- the preparation of the present invention contains a phosphate and a sodium salt, the phosphate is 0.1 to 0.1% and the phosphate is 0.0.
- the preparation of the present invention is preferably manufactured so that the oligonucleotide for gene conversion and collagen are in a particulate aggregate.
- the term “aggregate” refers to a complex in which a large number of positively charged collagen and negatively charged oligonucleotides are electrically attracted to each other in a molecule. means.
- the formation of this aggregate is mainly composed of columnar collagen molecules with a major axis of about 300 nm and a diameter of about 1.5 nm, which associate mainly with the major axis of the molecule. Stretch in the direction. Therefore, the composite takes various shapes such as fibrous, fine fibrous, and particulate depending on the degree of elongation. be able to.
- the aggregate in the present invention is preferably in the form of particles from the viewpoint of the efficiency of transfer of the oligonucleotide into cells, particularly into the nucleus.
- the major axis of the particulate aggregate is preferably from 300 ⁇ to 50 ⁇ m, more preferably from 300 nm to 30 ⁇ .
- the concentration and ratio of the collagen and oligonucleotide to be mixed, the salt concentration, the temperature, and the pH are adjusted.
- the concentration of collagen in mixing is from 1.0 to 0.005 weight 0 / . It is more preferably 0.5 to 0.005% by weight, and still more preferably 0.05 to 0.005% by weight, but the concentration of oligonucleotides that form aggregates as the collagen concentration decreases also increases. descend.
- fine collagen is previously dissolved in a solution containing 0.01M to 0.1M phosphate and 0.07M to 0.14M sodium salt.
- Form fiber or collagen molecule aggregates and sometimes maintain collagen molecules in a monomolecular state, and add oligonucleotides to these to form collagen fibers, collagen molecule aggregates or collagen monomolecules. There is a way to do it.
- the temperature during mixing is desirably 1 to 10 ° C, and more desirably 1 to 5 ° C, in order to obtain the above preferred long-diameter aggregate. is there.
- the solution-form preparation of the present invention dissolves collagen in a solution containing 0.01M to 0.1M phosphate and a solution containing 0.07M to 0.14M sodium salt, and dissolves the same concentration of phosphate in the solution.
- the mixture obtained by stirring at a temperature of 0 ° C usually has a collagen concentration of 50 ⁇ l.
- g nom 1 L OmgZm 1
- the concentration of oligonucleotide at the time of mixing is usually 20 ⁇ g Zm 1 to 1 mg / m 1.
- the ratio of the number of collagen molecules forming an aggregate to the number of nucleotide monomers of the oligonucleotide is 1: 1-1: 200, preferably 1: 3-1: 150, More preferably, the ratio is 1: 3 to 1: 120.
- the pH of the solution at the time of mixing is pH 5 to 9, preferably pH 6 to 8.
- a preparation in the form of a solution containing a particulate aggregate can be provided.
- the concentration of collagen in the solution form in the formulation mainly when used in nuclear localization of gene conversion and oligonucleotides at Inbitoro, be contained in a range of 0.0 1 to 1.0 wt 0/0 Is preferred.
- the concentration of collagen in the above-mentioned solution-form preparation is mainly in the range of 0.01 to 0.25% by weight when used for gene conversion in vivo, gene therapy or nuclear localization of oligonucleotides. It is preferred to contain.
- solution-form preparation of the present invention contains EDTA at 0.1 to 1% by weight for stabilizing oligonucleotides, and 0.01 to 1% by weight of a surfactant for preventing adsorption to containers and administration devices. Can be contained.
- Film and solid preparations are obtained by concentrating and drying the above solution preparations. That is, a film-form preparation can be prepared by casting the above solution-form preparation on a flat plate and drying it at a temperature of 40 ° C or lower. In addition, a powdery preparation can be prepared by centrifuging the solution preparation to precipitate an aggregate of oligonucleotide and collagen, and drying the precipitate at 40 ° C or lower. A method of preparing a rod-shaped preparation by compressing a sponge-like compound obtained by freeze-drying the powdery or solution-form preparation obtained in this manner, or adding a small amount of a powdery preparation and a sponge-like preparation. Water is added and kneaded to form a highly concentrated solution, which is extruded from a nozzle and dried at 40 ° C or less to prepare a rod-shaped preparation.
- additives that are pharmaceutically acceptable such as albumin, gelatin, chondroitin sulfate, agarose, sorbitol, sucrose, etc. In the range of 10 to 80% by weight of the whole preparation.
- the particle size of the powdered formulation can take various shapes depending on the excipient,
- the major axis of the aggregate formed by the oligonucleotide and collagen is preferably 300 nm to 50 / im, more preferably 300 nm to 30 Aim.
- the rod-shaped solid preparation preferably has a diameter of 0.lmm to 2.Omm, a length of 3mm to 2Omm, and a diameter of 0.3mm to 1.0mm so that it can be locally injected by injection.
- a length of 3 mm to 10 mm is more desirable.
- the amount of oligonucleotide contained in the solid preparation is usually a solid preparation 1 mg per 10 // ⁇ ⁇ 100 ⁇ ⁇ , collagen quantity is 990 / zg ⁇ 250 ⁇ g per usual solid preparation lmg.
- a third aspect of the present invention relates to a method for optionally converting a specific base on a genomic gene in the nucleus of a cell. That is, in the conversion method of the present invention, by contacting the cell with the site-specific gene conversion promoter of the present invention, the oligonucleotide contained in the promoter is transferred and localized in the nucleus of the contacted cell. It is characterized by performing a desired base conversion.
- the cells to be converted are not particularly limited as long as they are eukaryotic cells, and include yeast, fungi, plant cells and animal cells, and are preferably mammalian cells, yeast or fungi. .
- Whether a specific base has been converted can be determined by contacting the gene conversion promoter of the present invention, collecting cells after a certain period of time, amplifying a gene region containing the specific base by a PCR method, or the like.
- the gene therapy agent of the present invention can be used for treating various genetic diseases.
- Diseases to be treated include the absence of normal proteins due to point mutations (including 1-3 nucleotide mutations), deletion mutations or insertion mutations (including 1-3 nucleotide mutations) in genes. Attributable diseases. Such diseases include familial polyamyloid neuropathy (FAP), Fupri's disease, Winoleson's disease, thalassemia, sickle cell disease, muscular dystrophy, cystic fibrosis, factor V Leiden abnormality, biotin-dependent multiple carboxylase deficiency, etc. Is mentioned.
- TTR transthyretin
- Type II FAP serine Diseases caused by
- TTR is mainly produced in the liver
- the gene therapy agent of the present invention can be administered targeting hepatocytes.
- amyloid deposition due to atypical TTR also causes visual impairment accompanied by clouding of the vitreous body of the eye, and this disorder can be treated by administering the gene therapy agent of the present invention directly to the retina of the eye. it can.
- the method of administration of the gene therapy agent of the present invention includes transdermal, subcutaneous, intranasal, nasal, pulmonary, intramuscular, intracerebral, tissue (S storage surface, ⁇ ), intravascular ( It can be administered intravenously, intraportally, or orally.
- the dosage of the gene therapy agent of the present invention is the liquid volume in the case of a solution, the area in the case of a film-form preparation, the diameter and length of the rod-shaped preparation, and the powder preparation. In the case of (1), it can be easily adjusted by the volume or weight of the powder.
- the optimal dose of the gene therapy agent of the present invention varies depending on the indication disease, administration site, administration method, type of dosage form, patient's gender, age, symptoms, etc., but the amount of oligonucleotide in the formulation is For example, 0.001 mg / kg to 4 Omg / kg, preferably 0.01 mg / kg to 3 Omg / kg.
- the oligonucleotide in the gene therapy agent after the administration can efficiently convert the mutation in the genomic gene, that is, can repair the mutation.
- normal TTRs are produced as a result of gene repair, atypical TTR levels are reduced, and amyloid formation is suppressed, thereby improving FAP symptoms.
- a fourth aspect of the present invention provides an agent for promoting nuclear localization of an oligonucleotide, comprising at least collagen and the oligonucleotide.
- the oligonucleotide may be one designed so as to meet the conditions of the above-mentioned oligonucleotide for gene conversion, but any oligonucleotide having a normal length as an oligonucleotide may be used. It can be suitably used.
- the present preparation can take various forms as in the case of the gene conversion promoter, but a solution form is preferred. The concentrations of the phosphate and sodium salt contained in the present solution in the form of a solution are the same as described above. In addition, other conditions (collagen concentration, The ratio of the number of molecules of one molecule to the number of oligonucleotide monomers, pH and temperature of the solution during mixing, etc.) are the same as described above.
- the oligonucleotide contained in the preparation can be efficiently localized in the nucleus of the cell. Whether or not the oligonucleotide is localized in the nucleus of the cell can be confirmed by labeling the oligonucleotide with a fluorescent dye or the like and observing it with a fluorescence microscope or the like.
- a site-specific conversion promoter for a TTR gene related to FAP and a site-specific conversion promoter for an a-galactosidase gene related to Fupurii disease used in the following Test Examples and Examples were prepared.
- Oligonucleotide having the nucleotide sequence of SEQ ID NOs: 2 to 12.3.8 3 to 50 ⁇ and 10 ⁇ g / m 1 to 1 g / m 1 of equal amount of atelocollagen, 0.14 M salt After mixing at 2 ° C in a 1 OmM phosphate buffer (pH 7.0) containing dani sodium, a solution preparation containing an aggregate of oligonucleotide and collagen (DNA collagen embedded in atelocollagen) was prepared. Prepared.
- FAP type I FAP ATTR Val30Met
- FAP ATTR Val30Met FAP ATTR Val30Met
- FIGS. 1 (b) to (d) DNA oligonucleotides as shown in FIGS. 1 (b) to (d) were designed.
- the oligonucleotides to be transferred were labeled at the 5 and 5 ends with FITC.
- Fugene6 (Roche), ExGen 500 (MBI Fermentas), HVJ "-ribosome (provided by Osaka University graduate School of Medicine, Gene Therapy, Dr. Yasushi Kaneda) or the atelocollagen preparation prepared in Production Example 1 (FITC).
- the optimization of the transfection method was studied using oligo nucleotides labeled with.
- atelocollagen-embedded DNA oligonucleotide 10 ⁇ 25 ⁇ 6 ⁇ ⁇ , 10 ⁇ 45mer, 10 ⁇ 74mer
- 0.5% atelocollagen-embedded DNA oligonucleotide 50 M 25mer, 25 ⁇ 45mer, 10 ⁇ 74mer
- 600 ⁇ 1 600 ⁇ 1 of culture solution
- the nuclear localization rate of DNA oligonucleotides in HepG2 cells was determined by the expression of atelocollagen-embedded DNA in Fugene6, ExGen500, HVJ-ribosome and atelocollagen preparations, as shown in Figure 2 (a) and (b). It can be seen that the oligonucleotide was taken up by almost 50% of pG2 cells, and that the introduced DNA oligonucleotide was localized in the nucleus. All other methods showed weaker fluorescence and low nuclear localization.
- the efficiency of gene repair was compared using 25-mer to 74-mer DNA oligonucleotides.It is known that 45-mer and 74-mer DNA oligonucleotides have a relatively high gene repair rate.
- ⁇ terrorist collagen-embedded DNA oligonucleotide 74Mei- (SEQ ID NO: 4) was used was examined gene conversion rate in the He P G2 cells, the conditions 300 Mi and 600 Mi of the 3)
- oligonucleotide concentration: 3.83 ⁇ oligonucleotide concentration: 3.83 ⁇
- Concentration: 10 / X ⁇ the concentration of atelocollagen in the preparation was increased from 0.1% to 0.5%, and 600 ⁇ of atelocollagen-embedded D ⁇ oligonucleotide was added to 600 ⁇ l.
- Gene conversion rate rose to 1 0% 1% by Rukoto be added to the cell cultures. Gene conversion rates using this drug may increase to a certain level in a dose-dependent manner.
- the gene conversion rate was 0% when the atelocollagen concentration was 0.1% (DNA oligonucleotide concentration: 10 ⁇ ) for the DN-oligonucleotide 25mer (SEQ ID NO: 2) embedded in the mouth mouth collagen. At 0.5% (DN ⁇ oligonucleotide concentration: 50 ⁇ ⁇ ), about 0.5%, and at 45mer SEQ ID NO: 3), the atelocollagen concentration is 0.1% (DNA oligonucleotide concentration: ⁇ ⁇ ). 0%, 0.5% (DNA (Ligonucleotide concentration: 25 ⁇ M) was about 1%.
- DNA oligonucleotide used in the present invention preferably has a chain length of 45 mer or more, more preferably 74 mer or more.
- FIG. 3 shows the result of observation with a fluorescence microscope in the above 4). According to FIG. 3, no particles are observed with the DNA oligonucleotide alone, whereas with the 0.05% atelocollagen-embedded DNA oligonucleotide (SEQ ID NO: 5), aggregated particles are observed, and the average major diameter of the aggregated particles is observed.
- SEQ ID NO: 5 atelocollagen-embedded DNA oligonucleotide
- atelocollagen-embedded DNA oligonucleotide 1074mer, SEQ ID NO: 6
- 1% atelocollagen-embedded DNA oligonucleotide 30 ⁇ 71 ⁇ 2er
- the gene conversion rate was calculated as ATTR Val30Met copy number Z (ATTR Val30Met copy number + normal TTR gene copy number) x 100 (%).
- the 74-mer DNA oligonucleotide embedded with 1% atelocollagen also had a higher gene conversion rate than the 74-mer DNA oligonucleotide embedded with 0.5% atelocollagen.
- vitrectomy showed a higher gene conversion rate (about 1%).
- mice harboring transthyretin (ATTR Val30Met) gene and homotransgenic mice harboring transthyretin gene of abnormal mouse Analysis of mechanism, Shuichiro Maeda et al., Research project for a specific disease, subsidized by the Health and Welfare Research Grant, "Research on amyloidosis,” FY2001 General Research Report, ⁇ 39- 41), the following preparations 1 to 3 were administered, and the gene conversion rate was examined.
- Oligonucleotide 74 mer (SEQ ID NO: 5) in which the base for gene conversion is located at the center and the three bases at both ends are phosphorothioate oligonucleotides
- Formulation 1 oligonucleotide 10 ⁇ M, atherocollagen 0.5%
- IJ3 Oligonucleotide 10 ⁇ , Collagen 0.05%
- the above preparation was directly administered (0.2 ml in total) to each of the hepatic lobes of one of the mouse livers.
- the hepatic lobe to which the drug was administered and the hepatic lobe to which no drug was administered were collected and genes were extracted, and both liver lobes were analyzed for normality using the MASA method and real time PGR. The percentage of genes was measured.
- transthyretin gene of mouse ATTR Val30Met was administered with the preparation, and serum containing anti-transthyretin antibody in serum.
- the transthyretin extracted by immunoprecipitation was subjected to unicorn analysis using a mass-assisted 1 aser desorption ionization / time-of-flight mass spectrometry to determine whether normal transthyretin was produced. investigated.
- a DNA oligonucleotide 51-mer YKS-384 (SEQ ID NO: 7), YKS-3 in which positions 1, 2, 3, 47, 49 and 50 in SEQ ID NO: 7 have been substituted with Locked nucleic acid (trade name) (LNA) 82, and YK S in which positions 1, 2, 3, 10, 11, 12, 14, 34, 35, 38, 47, 49 and 50 in SEQ ID NO: 7 have been substituted with Locked nucleic acid (trade name) (LNA) -3 8 3 types were synthesized.
- the oligonucleotide is designed based on the human TTR gene. According to the method described in Production Example 1, a solution preparation (0.5% atelocollagen-embedded DNA oligonucleotide (10zM)) containing an aggregate of the three types of oligonucleotides and collagen was prepared.
- 2xl0 5 HepG2 cells purchased from Dainippon Pharmaceutical Co., Ltd.
- 2xl0 5 HepG2 cells purchased from Dainippon Pharmaceutical Co., Ltd.
- 0.5% atelocollagen-embedded DNA oligonucleotide 51mer (10 ⁇ ) prepared in 1) was added to 600 ⁇ .
- Each was transfection, and the cells were collected 6 days later.
- a single solution of DN ⁇ oligonucleotide (YKS-384 (SEQ ID NO: 7) alone was prepared, and the solution was transfected in the same manner. DNA was extracted from the collected cells, and the mutant sequence was extracted.
- the use of the atelocollagen-embedded DNA oligonucleotide resulted in the conversion of the base encoding the 30th amino acid on the TTR gene in HepG2 cells when the DNA oligonucleotide was used alone.
- the conversion of the base encoding another amino acid on the TTR gene that causes FAP was promoted by using atelocollagen-embedded DNA oligonucleotides. We considered what we could do.
- FAP ATTR Ser 50 lie where the serine at position 50 of the transthyretin gene was mutated to isoleucine and 1
- a DNA oligonucleotide 74mer (SEQ ID NOS: 8, 9; phosphorothioate oligonucleotides having three bases at both ends, with the bases for gene conversion arranged at the center) was synthesized based on the human TTR gene.
- a solution preparation (0.5% atelocollagen-embedded DNA oligonucleotide ( ⁇ ⁇ ⁇ ⁇ )) containing an association of the two types of DNA oligonucleotides and collagen was prepared.
- a DNA oligonucleotide (SEQ ID NO: 8) designed to convert the base encoding the 50th amino acid on the human transthyretin gene, and a base encoding the 114th amino acid on the human transthyretin gene I can do it
- Each of the DNA oligonucleotides (SEQ ID NO: 9) designed as described above was prepared using atelocollagen-embedded DNA oligonucleotide (atelocollagen concentration: 0.5%, DNA oligonucleotide concentration: 10 ⁇ M) and DNA oligonucleotide alone. Added to pG2 cells.
- the base conversion rate was 0% for DNA oligonucleotides designed to convert the base encoding the 50th amino acid on the human transthyretin gene, 0% for DNA oligonucleotides alone, and DNA oligonucleotides embedded in atelocollagen.
- DNA oligonucleotides designed to convert 1.61% of nucleotides and the base encoding the 114th amino acid on the human transthyretin gene 0% of DNA oligonucleotide alone and atelocollagen embedded DNA 0.58% for the oligonucleotide.
- the DNA oligonucleotide embedded in the artificial mouth collagen of the present invention can promote base conversion by the DNA oligonucleotide even when the base mutation site is different. Furthermore, this indicates that the present invention can provide a therapeutic agent for different types of FAP.
- the use of the atelocollagen-embedded DNA oligonucleotide enabled the conversion of the base encoding the 30th amino acid on the TTR gene in HepG2 cells using DNA oligonucleotide alone. It became clear that it could be promoted compared to the case.
- the conversion of bases on the TTR 'gene in human retinal cells can be achieved by using the DNA collagen-embedded DNA oligonucleotide. We considered what could be promoted.
- DNA oligonucleotide (SEQ ID NO: 4) based on the human TTR gene
- a solution preparation containing an association of DNA oligonucleotide and collagen (0.5%, 0.25% and 0.1% atelocollagen-embedded DNA oligonucleotides (10%) were prepared.
- the base conversion rate was 0% when the atelocollagen concentration was 0.1% and 5.91% when the atelocollagen concentration was 0.25%. At 5%, it was 2.08%. This result indicates that the atelocollagen-embedded DNA oligonucleotide of the present invention can promote base conversion by DNA oligonucleotide in not only human liver cells but also human retinal cells.
- a solution preparation containing the three types of oligonucleotides and collagen complex (0.1%, 0.25, 0.5% atelocollagen-embedded DNA oligonucleotide) (10 ⁇ )) was prepared.
- the embedded DNA oligonucleotide (10 ⁇ 74mer) was transfected in 600 ⁇ l (600 ⁇ of culture solution) at a time, and the cells were collected 7 days later. DNA was extracted from the collected cells, and the gene conversion rate was calculated using the MASA method and real time PCR.
- DNA oligonucleotide that converts amino acid at position 125 (SEQ ID NO: 10) Atelocollagen concentration: base conversion rate
- DNA oligonucleotide that converts amino acid at position 374 (SEQ ID NO: 11) Atelocollagen concentration: base conversion rate
- atelocollagen-embedded DNA oligonucleotide of the present invention can promote base conversion by the DNA oligonucleotide even for a gene mutation associated with Fabry disease. This further indicates that the present invention can provide a therapeutic agent for Fabry disease.
- the present invention provides a gene conversion promoter and a therapeutic agent for a gene disease, which convert a specific base pair present on a cell genomic gene in a site-specific manner.
- the preparation of the present invention can be used to produce oligonucleotides with extremely high efficiency by using collagen, which is an in vivo organism, has low antigenicity, and has been confirmed to be highly safe when administered to a living body. Once introduced, it can be localized in the nucleus, and can efficiently promote the conversion of genomic genes.
- the preparation of the present invention is also useful as an agent for promoting nuclear localization of an oligonucleotide. The use of these preparations enables gene therapy and the production of genetically modified animals and plants.
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JP2004537992A JPWO2004026343A1 (ja) | 2002-09-20 | 2003-09-19 | 部位特異的遺伝子変換促進剤および遺伝子疾患治療剤 |
EP03797684A EP1550463A4 (en) | 2002-09-20 | 2003-09-19 | PREPARATION FOR FACILITATING SITECOUS GENERAL TRANSFORMATION AND PREPARATION FOR GENDER THERAPY |
AU2003264507A AU2003264507A1 (en) | 2002-09-20 | 2003-09-19 | Site-specific gene conversion promoter and gene therapeutic |
US10/527,597 US20060258602A1 (en) | 2002-09-20 | 2003-09-19 | Site-specific gene conversion promoter and gene therapeutic |
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WO2006101173A1 (ja) * | 2005-03-24 | 2006-09-28 | Dainippon Sumitomo Pharma Co., Ltd. | 核酸分子とコラーゲンの複合体微細粒子製剤 |
JP2008544742A (ja) * | 2005-02-25 | 2008-12-11 | アイシス ファーマシューティカルズ, インコーポレーテッド | IL4R−αに対する組成物およびその使用 |
WO2014112144A1 (ja) * | 2013-01-15 | 2014-07-24 | 国立大学法人熊本大学 | 染色体セントロメア由来のサテライトノンコーディングrnaを標的とした核酸抗癌剤、及び該抗癌剤を用いる方法 |
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TW586934B (en) * | 1997-05-19 | 2004-05-11 | Sumitomo Pharma | Immunopotentiating composition |
DK1295611T3 (da) * | 2000-06-20 | 2010-10-04 | Dainippon Sumitomo Pharma Co | Oligonukleotid-transformerende forbindelser |
PT1407787E (pt) | 2001-06-20 | 2009-07-07 | Koken Kk | Método de promoção da transferência de ácido nucleico |
JP4954550B2 (ja) * | 2003-12-19 | 2012-06-20 | 大日本住友製薬株式会社 | 新規な核酸導入法 |
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2003
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- 2003-09-19 AU AU2003264507A patent/AU2003264507A1/en not_active Abandoned
- 2003-09-19 JP JP2004537992A patent/JPWO2004026343A1/ja active Pending
- 2003-09-19 US US10/527,597 patent/US20060258602A1/en not_active Abandoned
- 2003-09-19 WO PCT/JP2003/011962 patent/WO2004026343A1/ja not_active Application Discontinuation
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WO2014112144A1 (ja) * | 2013-01-15 | 2014-07-24 | 国立大学法人熊本大学 | 染色体セントロメア由来のサテライトノンコーディングrnaを標的とした核酸抗癌剤、及び該抗癌剤を用いる方法 |
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---|---|
JPWO2004026343A1 (ja) | 2006-01-12 |
AU2003264507A1 (en) | 2004-04-08 |
EP1550463A1 (en) | 2005-07-06 |
EP1550463A4 (en) | 2006-12-27 |
US20060258602A1 (en) | 2006-11-16 |
AU2003264507A8 (en) | 2004-04-08 |
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