CN103044338A - miR-21小分子抑制剂及应用 - Google Patents
miR-21小分子抑制剂及应用 Download PDFInfo
- Publication number
- CN103044338A CN103044338A CN2012105357590A CN201210535759A CN103044338A CN 103044338 A CN103044338 A CN 103044338A CN 2012105357590 A CN2012105357590 A CN 2012105357590A CN 201210535759 A CN201210535759 A CN 201210535759A CN 103044338 A CN103044338 A CN 103044338A
- Authority
- CN
- China
- Prior art keywords
- mir
- diamino
- nitrile
- cell
- diaza
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 150000003384 small molecules Chemical class 0.000 title claims abstract description 8
- 108091028838 miR-2 stem-loop Proteins 0.000 title 1
- 108091062762 miR-21 stem-loop Proteins 0.000 claims abstract description 41
- 108091041631 miR-21-1 stem-loop Proteins 0.000 claims abstract description 41
- 108091044442 miR-21-2 stem-loop Proteins 0.000 claims abstract description 41
- 239000003112 inhibitor Substances 0.000 claims abstract description 24
- 206010006187 Breast cancer Diseases 0.000 claims abstract description 17
- 208000026310 Breast neoplasm Diseases 0.000 claims abstract description 17
- 208000005718 Stomach Neoplasms Diseases 0.000 claims abstract description 17
- 239000003814 drug Substances 0.000 claims abstract description 9
- 230000005764 inhibitory process Effects 0.000 claims abstract description 7
- 210000004881 tumor cell Anatomy 0.000 claims abstract description 7
- 210000004027 cell Anatomy 0.000 claims description 57
- 208000033641 Ring chromosome 5 syndrome Diseases 0.000 claims description 34
- 208000032612 Glial tumor Diseases 0.000 claims description 20
- 206010018338 Glioma Diseases 0.000 claims description 20
- 239000000126 substance Substances 0.000 claims description 7
- 201000000498 stomach carcinoma Diseases 0.000 claims description 2
- 230000004565 tumor cell growth Effects 0.000 claims description 2
- 108091070501 miRNA Proteins 0.000 abstract description 30
- 239000002679 microRNA Substances 0.000 abstract description 29
- 230000006907 apoptotic process Effects 0.000 abstract description 15
- 206010017758 gastric cancer Diseases 0.000 abstract description 15
- 201000011549 stomach cancer Diseases 0.000 abstract description 15
- 150000001875 compounds Chemical class 0.000 abstract description 14
- 230000022131 cell cycle Effects 0.000 abstract description 11
- 206010028980 Neoplasm Diseases 0.000 abstract description 6
- 230000001737 promoting effect Effects 0.000 abstract description 2
- QMLSMSICNBXNLJ-UHFFFAOYSA-N 2,4-diamino-1,3-diazinane-5-carbonitrile Chemical compound NC1NCC(C#N)C(N)N1 QMLSMSICNBXNLJ-UHFFFAOYSA-N 0.000 abstract 3
- 239000010413 mother solution Substances 0.000 abstract 2
- 230000006370 G0 arrest Effects 0.000 abstract 1
- 230000037057 G1 phase arrest Effects 0.000 abstract 1
- 239000000084 colloidal system Substances 0.000 abstract 1
- 238000012258 culturing Methods 0.000 abstract 1
- 239000008367 deionised water Substances 0.000 abstract 1
- 229910021641 deionized water Inorganic materials 0.000 abstract 1
- 230000002401 inhibitory effect Effects 0.000 abstract 1
- 238000002360 preparation method Methods 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
- 108091032973 (ribonucleotides)n+m Proteins 0.000 description 14
- 238000000034 method Methods 0.000 description 14
- 229940125782 compound 2 Drugs 0.000 description 13
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 description 12
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 12
- 238000002156 mixing Methods 0.000 description 12
- 238000003032 molecular docking Methods 0.000 description 9
- 238000003753 real-time PCR Methods 0.000 description 9
- 239000012452 mother liquor Substances 0.000 description 8
- 238000012216 screening Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 6
- 239000000725 suspension Substances 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 5
- 238000011160 research Methods 0.000 description 5
- 239000006144 Dulbecco’s modified Eagle's medium Substances 0.000 description 4
- 108090000790 Enzymes Proteins 0.000 description 4
- 102000004190 Enzymes Human genes 0.000 description 4
- 230000035519 G0 Phase Effects 0.000 description 4
- 230000010190 G1 phase Effects 0.000 description 4
- 108091008065 MIR21 Proteins 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 108090000623 proteins and genes Proteins 0.000 description 4
- 102000004169 proteins and genes Human genes 0.000 description 4
- 208000024172 Cardiovascular disease Diseases 0.000 description 3
- 102100023387 Endoribonuclease Dicer Human genes 0.000 description 3
- 108010040476 FITC-annexin A5 Proteins 0.000 description 3
- 101000907904 Homo sapiens Endoribonuclease Dicer Proteins 0.000 description 3
- 108091061943 Mir-218 microRNA precursor family Proteins 0.000 description 3
- 108091028049 Mir-221 microRNA Proteins 0.000 description 3
- 239000006285 cell suspension Substances 0.000 description 3
- 208000026106 cerebrovascular disease Diseases 0.000 description 3
- 238000002247 constant time method Methods 0.000 description 3
- 230000000875 corresponding effect Effects 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 3
- 238000004043 dyeing Methods 0.000 description 3
- 230000002526 effect on cardiovascular system Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 239000007850 fluorescent dye Substances 0.000 description 3
- -1 heterocycle organic compound Chemical class 0.000 description 3
- 108091042844 let-7i stem-loop Proteins 0.000 description 3
- 108020004999 messenger RNA Proteins 0.000 description 3
- 108091059199 miR-200a stem-loop Proteins 0.000 description 3
- 108091040176 miR-218 stem-loop Proteins 0.000 description 3
- 108091080321 miR-222 stem-loop Proteins 0.000 description 3
- 108091092722 miR-23b stem-loop Proteins 0.000 description 3
- 108091031298 miR-23b-1 stem-loop Proteins 0.000 description 3
- 108091082339 miR-23b-2 stem-loop Proteins 0.000 description 3
- 108091042838 miR-524 stem-loop Proteins 0.000 description 3
- 239000003973 paint Substances 0.000 description 3
- 239000002243 precursor Substances 0.000 description 3
- 108091008146 restriction endonucleases Proteins 0.000 description 3
- 238000010839 reverse transcription Methods 0.000 description 3
- 238000010186 staining Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 230000002103 transcriptional effect Effects 0.000 description 3
- 102100032839 Exportin-5 Human genes 0.000 description 2
- 108091030146 MiRBase Proteins 0.000 description 2
- 108091034117 Oligonucleotide Proteins 0.000 description 2
- 229930012538 Paclitaxel Natural products 0.000 description 2
- 230000000692 anti-sense effect Effects 0.000 description 2
- 230000000259 anti-tumor effect Effects 0.000 description 2
- 239000012148 binding buffer Substances 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 230000002596 correlated effect Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 201000010099 disease Diseases 0.000 description 2
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 2
- 208000005017 glioblastoma Diseases 0.000 description 2
- 238000005984 hydrogenation reaction Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 108091073628 miR-181d stem-loop Proteins 0.000 description 2
- 108091070404 miR-27b stem-loop Proteins 0.000 description 2
- 238000000302 molecular modelling Methods 0.000 description 2
- 150000002825 nitriles Chemical class 0.000 description 2
- 238000011275 oncology therapy Methods 0.000 description 2
- 229960001592 paclitaxel Drugs 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- RCINICONZNJXQF-MZXODVADSA-N taxol Chemical compound O([C@@H]1[C@@]2(C[C@@H](C(C)=C(C2(C)C)[C@H](C([C@]2(C)[C@@H](O)C[C@H]3OC[C@]3([C@H]21)OC(C)=O)=O)OC(=O)C)OC(=O)[C@H](O)[C@@H](NC(=O)C=1C=CC=CC=1)C=1C=CC=CC=1)O)C(=O)C1=CC=CC=C1 RCINICONZNJXQF-MZXODVADSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 108700037230 Exportin-5 Proteins 0.000 description 1
- 101000847058 Homo sapiens Exportin-5 Proteins 0.000 description 1
- 108091007419 MiR-27 Proteins 0.000 description 1
- 108700011259 MicroRNAs Proteins 0.000 description 1
- 101100144701 Mus musculus Drosha gene Proteins 0.000 description 1
- CZPWVGJYEJSRLH-UHFFFAOYSA-N Pyrimidine Chemical compound C1=CN=CN=C1 CZPWVGJYEJSRLH-UHFFFAOYSA-N 0.000 description 1
- 108700005075 Regulator Genes Proteins 0.000 description 1
- 108010057163 Ribonuclease III Proteins 0.000 description 1
- 102000003661 Ribonuclease III Human genes 0.000 description 1
- 108020004459 Small interfering RNA Proteins 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 239000002246 antineoplastic agent Substances 0.000 description 1
- 230000001640 apoptogenic effect Effects 0.000 description 1
- 125000004429 atom Chemical group 0.000 description 1
- 239000000872 buffer Substances 0.000 description 1
- 150000001721 carbon Chemical group 0.000 description 1
- 230000002490 cerebral effect Effects 0.000 description 1
- 230000000973 chemotherapeutic effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229940127089 cytotoxic agent Drugs 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 238000013399 early diagnosis Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 208000026278 immune system disease Diseases 0.000 description 1
- 238000001727 in vivo Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 125000004433 nitrogen atom Chemical group N* 0.000 description 1
- 108091027963 non-coding RNA Proteins 0.000 description 1
- 102000042567 non-coding RNA Human genes 0.000 description 1
- 230000005868 ontogenesis Effects 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 230000008506 pathogenesis Effects 0.000 description 1
- 239000013612 plasmid Substances 0.000 description 1
- 230000001124 posttranscriptional effect Effects 0.000 description 1
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 1
- 108091007428 primary miRNA Proteins 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 210000000130 stem cell Anatomy 0.000 description 1
- 230000001225 therapeutic effect Effects 0.000 description 1
- 230000036962 time dependent Effects 0.000 description 1
- 238000013519 translation Methods 0.000 description 1
- 230000004614 tumor growth Effects 0.000 description 1
- 230000003612 virological effect Effects 0.000 description 1
Images
Landscapes
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Medicines That Contain Protein Lipid Enzymes And Other Medicines (AREA)
Abstract
本发明涉及一种miR-21小分子抑制剂及应用。本发明药物是能特异性抑制miR-21表达,进而促进多种肿瘤细胞凋亡的化合物2,4-二氨基代-1,3-二氮杂己环-5-腈。2,4-二氨基代-1,3-二氮杂己环-5-腈与miR-21接位结合能力Ki=1.49nM,deltaG=-12.04kcal/mol。其制备包括:将化合物2,4-二氨基代-1,3-二氮杂己环-5-腈溶于去离子水中配成母液,后按一定比例加入肿瘤细胞(胶质瘤、胃癌和乳腺癌)培养体系,能特异性的抑制miR-21表达,而基本不影响其他miRNA表达。同时细胞周期出现G0/G1期阻滞,细胞凋亡百分比例明显增加,对肿瘤实现更有效的抑制。
Description
技术领域
微小RNA(microRNA或miRNA)是指长度约21~25nt的某些特殊的小型非编码RNA组成的家族,这些miRNA能够识别特定的目标mRNA,并在转录后水平通过促进靶mRNA的降解和/或抑制翻译过程而发挥负调控基因表达的过程,并与个体发育、干细胞分化和疾病发生密切相关。miRNA最初的转录结构是一个发夹结构的pri-miRNA,经过Drosha酶加工后得到pre-miRNA,通过依赖RanGTP/exportin5(Exp5)的转运机制完成pre-miRNA转运出核,经过Dicer酶切后pre-miRNA降解成约22nt的单链RNA形成成熟的miRNA;成熟的miRNA在RISC中能够识别特定的目标mRNA的3`UTR区域。每个miRNA具有数十种到甚至更多的蛋白表达调控靶点,而每一种蛋白表达有可能同时受到多个miRNA的调控。miRNA在大小、结构和功能方面存在着高度的保守性,组成了物种进化过程中细胞高度复杂的RNA表达调控网络。目前研究发现,miRNA在肿瘤、心脑血管疾病、免疫系统疾病等中存在着特异性的表达谱。因此,miRNA在以上相关疾病的发病机制、早期诊断以及寻找新的治疗策略的研究中意义重大。
背景技术
miR-21是较早发现的人类miRNA之一,与许多种肿瘤和心脑血管疾病关系密切。以胶质瘤为例,Ciafrè等人通过对胶质瘤手术标本以及胶质母细胞瘤细胞系的miRNA表达谱的分析,证实miR-21作为表达上调的miRNA代表,在胶质瘤组织中的表达水平是瘤周“正常组织”表达水平的1.8~9.3倍;而在胶质母细胞瘤细胞系中,其表达水平比正常脑组织表达水平要高1.6倍。反义miR-21下调miR-21表达水平,可以使胶质瘤细胞增殖侵袭能力下降,肿瘤细胞凋亡增加,肿瘤体内生长受到抑制。因此,如能有效调控miR-21水平,则极其有助于推动肿瘤和心脑血管疾病的治疗发展。目前,下调miRNA表达水平的方法,主要有化学合成寡核苷酸和构建载体2个方法。化学合成寡核苷酸采用反义miRNA来阻断特定miRNA的活性。对于载体而言,主要是构建质粒或者病毒系统来表达与miRNA前体的茎环结构互补的siRNA。但这些方法因为价格较昂贵,目前大多处于实验室阶段,还无法真正用于临床治疗。因此,发现新的手段来下调miRNA水平,成为极为迫切的研究领域。
发明内容
本发明目的是解决目前下调miR-21方法价格昂贵且未真正应用于临床的问题,提供一种下调miR-21新方法即miR-21小分子抑制剂。
本发明的一种miR-21小分子抑制剂为2,4-二氨基代-1,3-二氮杂己环-5-腈,化学式为C5H11N5,分子量为141.17434g/mol,是一种六元杂环有机化合物,其碳氮环结构类似于嘧啶,1、3位含有两个氮原子,2、4、5、6号位置上均为碳原子,各原子均由单键连接。2、4号位置上分别连有一个氨基取代基,5号位置上则连有一个腈基取代基。
化学结构式为:
2,4-二氨基代-1,3-二氮杂己环-5-腈与miR-21接位结合能力Ki=1.49nM,deltaG=-12.04kcal/mol。在筛选的候选化合物中结合能力最强。
miR-21小分子抑制剂2,4-二氨基代-1,3-二氮杂己环-5-腈抑制剂应用,下调miR-21小分子,抑制肿瘤细胞生长。应用于抑制肿瘤细胞的药物。
miR-21的小分子抑制剂是从美国癌症研究院(NIH)的癌症治疗计划(DTP)中筛选获得。该项目成立于1955年,到目前超过40种美国许可的化学治疗药物是在该项目中获得完成,其中包括最常见的化疗药紫杉醇(Paclitaxel),并且市场上超过70%的抗癌药物的研发也均与该项目有关。此项目数据库目前已拥有超过20万中化学小分子的2D或3D化学结构,提供原药供科研使用。我们利用计算机结构模拟miR-21前体的3D结构,从DTP数据库中筛选与之结合位点匹配度最高的化合物,并经体内外实验进一步验证,确定了化合物2,4-二氨基代-1,3-二氮杂己环-5-腈为最优的miR-21抑制剂。目前该抑制剂没有商品化,但可以从DTP免费获得。MC-Fold/MC-Sym pipeline是一种常用的RNA二级及三级结构预测的软件。将RNA相关序列输入MC-Fold中可以得到RNA的二级机构,而进一步将此二级结构输入MC-Sym中则会产生对应的三级结构。具体筛选过程如下:
1.Has-miR-21的前体序列我们从miRBase(http://microrna.sanger.ac.uk/sequences/)中获得(5’UGUCGGGUAGCUUAUCAGACUGAUGUUGACUGUUGAAUCUCAUGGCAACACCAGUCGAUGGGCUGUCUGACA3’),我们将其输入MC-Fold软件中得到其对应的二级结构(http://microrna.sanger.ac.uk/cgi-bin/sequences/mirna_entry.pl?acc=MI0000077),然后选取二级结构中的茎环结构序列(5’UGUUGACUGUUGAAUCUCAUGGCAACA3’),输入/MC-Sympipeline软件中得到了其三级机构。
2.我们进一步对此三级结构利用MC-FOLD|MC-SYMpipeline构建3D模型。
3.3D模型进一步利用TINKER Molecular Modeling Package(http://dasher.wustl.edu/tinker/)进行了能量优化。
4.优化后的模型又进一步使用pmol2q工具加氢,加电荷,输出mol2格式文(http://www.sourcefiles.org/Scientific/Biology/Proteins/pmol2q_2.3.0.tar.gz),然后使用AutoDockTools(ADT)将文件转换为AutoDock4识别的文件类型*.pdbqt。
4.配体小分子库我们使用的是:经过筛选,具有成药潜能的有约2000个化合物的NCIDiversitySet(http://dtp.nci.nih.gov/branches/dscb/diversity_explanation.html)。筛选过程请参阅原网站内容或NCI_Diversity_Set_ref.pdf。
6.分子对接。AutoGrid4和AutoDock4(http://autodock.scripps.edu/)被用于生成栅格和执行分子对接。受体对接位点选在Dicer酶切位点附近。对接后Estimated InhibitionConstant在nM级别的小分子有48个。而其中的化合物2,4-二氨基代-1,3-二氮杂己环-5-腈具有最强的结合能力(Ki=1.49nM,deltaG=-12.04kcal/mol).该分子与miR-21最佳对接位点。
miR-21小分子抑制剂的应用说明,取42mg化合物2,4-二氨基代-1,3-二氮杂己环-5-腈,溶于3ml的二甲基亚砜(DMSO)中得到浓度为0.1M的母液,6孔板中接种肿瘤细胞,细胞数量为10-15万,使用中皿则接种为20-30万;用10%FBS的DMEM培养24h后,加入2,4-二氨基代-1,3-二氮杂己环-5-腈母液使终浓度分别为1.5、7.5、15、30、75μM,培养24h后结果发现,在胶质瘤U87和LN229细胞系,乳腺癌MCF-7细胞系,胃癌SGC7901细胞系中,miR-21表达水平呈浓度依赖性显著降低(图3a)。并且miR-21表达水平随处理时间增加而表达降低(图3b)。
以U87和LN229胶质瘤细胞,SCG7901胃癌细胞,MCF-7乳腺癌细胞为模型,考察化合物2,4-二氨基代-1,3-二氮杂己环-5-腈处理后对其他miRNA表达水平的影响。当化合物2,4-二氨基代-1,3-二氮杂己环-5-腈处理胶质瘤、乳腺癌和胃癌细胞6小时后,其他miRNA均基本不变;24小时后,4个细胞系的miR-23b、miR-566、miR-27b、miR-222、miR-524-5p表达下降,而let-7i、miR-218、miR-1280、miR-200a表达则上升;另外,miR-181d表达在胶质瘤(图3a,3b)和乳腺癌细胞(图3c)中上调,在胃癌细胞(图3d)中下调。miR-23b表达水平在U87,LN229,MCF-7和SGC7901中分别下降到0.42(图4a),0.48(图4b),0.46(图4c),和0.44(图4d);miR-566表达水平分别下降到0.49(图4a),0.22(图4b),0.65(图4c)和0.56(图4d);miR-27表达水平分别下降到0.73(图4a),0.52(图4b),0.69(图4c),和0.65(图4d);miR-222表达水平分别下降到0.39(图4a),0.51(图4b),0.63(图4c),和0.60(图4d);miR-524-5P表达水平分别下降到0.50(图4a),0.68(图4b),0.63(图4c),和0.69(图4d);而let-7i表达水平在U87,LN229,MCF-7和SGC7901中分别上调到1.93(图4a),2.09(图4b),1.13(图4c)和2.45(图4d);miR-218分别上调到2.51(图4a),1.75(图4b),1.65(图4c),和1.70(图4d);miR-1280分别上调到4.46(图4a),4.41(图4b),1.57(图4c),和2.66(图4d);miR-200a分别上调到3.22(图4a),1.67(图4b),2.30(图4b),和3.40(图4d)。
以U87和LN229胶质瘤细胞,SCG7901胃癌细胞,MCF-7乳腺癌细胞为模型,考察化合物2,4-二氨基代-1,3-二氮杂己环-5-腈治疗后,化合物2,4-二氨基代-1,3-二氮杂己环-5-腈处理胶质瘤、乳腺癌和胃癌细胞48小时后,细胞周期出现G0/G1期抑制。在U87中,小分子抑制剂处理组与对照组相比G0/G1期(%)由53.31%延长到74.63%(图5a),LN229中由51.9%延长到70.02%(图5b),MCF-7中由49.93%延长到64.06%(图5c),SGC7901由45.32%到67.31%(图5d)。
以U87和LN229胶质瘤细胞,SCG7901胃癌细胞,MCF-7乳腺癌细胞为模型,考察化合物2,4-二氨基代-1,3-二氮杂己环-5-腈治疗后,化合物2,4-二氨基代-1,3-二氮杂己环-5-腈处理胶质瘤、乳腺癌和胃癌细胞48小时后,细胞凋亡比例增加。在U87中,小分子抑制剂处理组与对照组相比凋亡数由2.5%上升到13.16%,在LN229中,凋亡数由2.80%上升到16.30%,在MCF-7中凋亡数由1.84%上升到11.81%,在SGC7901中由3.11%上升到15.00%。如图6所示。
本发明提供的miR-21小分子抑制剂,能特异性抑制miR-21表达,起到抗肿瘤作用。化合物2,4-二氨基代-1,3-二氮杂己环-5-腈,能较好地并特异性的下调miR-21水平,能有效诱导多种肿瘤细胞凋亡,和细胞周期G0/G1期阻滞,具有潜在的抗肿瘤效果。
附图说明
图1:小分子的筛选流程。
图2:与Dicer酶切位点对接后示意图。
图3:化合物2,4-二氨基代-1,3-二氮杂己环-5-腈对miR-21表达的影响。
化合物2,4-二氨基代-1,3-二氮杂己环-5-腈处理胶质瘤、乳腺癌和胃癌细胞后,其抑制miR-21表达的效果呈现浓度依赖性和时间依赖性。
图4:化合物2,4-二氨基代-1,3-二氮杂己环-5-腈对其他miRNA表达的影响。
化合物2,4-二氨基代-1,3-二氮杂己环-5-腈(30μM)处理胶质瘤、乳腺癌和胃癌细胞6小时后,其他miRNA均基本不变。24小时后,4个细胞系的miR-23b、miR-566、miR-27b、miR-222、miR-524-5p表达下降,而let-7i、miR-218、miR-1280、miR-200a表达则上升;另外,miR-181d表达在胶质瘤和乳腺癌细胞中上调,在胃癌细胞中下调。
图5:化合物2,4-二氨基代-1,3-二氮杂己环-5-腈对细胞周期的影响
化合物2,4-二氨基代-1,3-二氮杂己环-5-腈(30μM)处理胶质瘤、乳腺癌和胃癌细胞48小时后,细胞周期出现G0/G1期抑制。
图6:化合物2,4-二氨基代-1,3-二氮杂己环-5-腈对细胞凋亡的影响
化合物2,4-二氨基代-1,3-二氮杂己环-5-腈(30μM)处理胶质瘤、乳腺癌和胃癌细胞48小时后,细胞凋亡比例增加。
其中:30μM是一浓度单位,即30微摩尔。
具体实施方式
实施例1:miR-21小分子抑制剂抑制胶质瘤细胞
取42mg化合物2,4-二氨基代-1,3-二氮杂己环-5-腈,溶于3ml的DMSO中得到浓度为0.1M的母液。6孔板中分别接种U87和LN229胶质瘤细胞,细胞数量大约为10-15万,含10%FBS的DMEM培养24h后,加入2,4-二氨基代-1,3-二氮杂己环-5-腈母液使终浓度分别为1.5、7.5、15、30、75μM,培养0.5、1、2、6、24、48h后,real-timePCR检测miR-21和其他miRNA表达,并行细胞周期及细胞凋亡检测。real-time PCR具体方法:使用RNA提取试剂盒提取细胞中总RNA,采用AMV逆转录酶进行逆转录。利用SYBR Green荧光染料掺入法进行Real-time PCR,以U6为内参,miR-21及U6引物合自上海吉玛公司。反应条件为95℃3min,95℃12s,62℃40s,读板,从第二步开始循环39次。绘溶解曲线,从69℃到96℃,每0.2s升高0.2℃。2-△△CT法分析数据。细胞周期:收集单细胞悬液,弃培养基,用冷PBS洗涤细胞两次;75%乙醇1ml重新悬浮细胞后,置于4°C冰箱中固定大于18h。4°C以1000rpm离心5min去除乙醇;PBS(0.01M,pH7.2)洗涤细胞,4°C以1000rpm离心5min两次;200μl Ranse A(1mg/ml)、37°C孵育30min;800μl PI染色液混匀后4°C避光染色30min。用流式细胞仪检测。细胞凋亡:离心收集悬浮细胞,弃培养基,用冷PBS洗涤细胞两次,用400ul1XBinding Buffer悬浮细胞,加入5ul Annexin V-FITC,轻轻混匀后于2-8°C避光条件下孵育15分钟,加入10ul PI后轻轻混匀于2-8°C避光条件下孵育5分钟。用流式细胞仪检测。
实施例2:miR-21小分子抑制剂抑制乳腺癌细胞
取42mg化合物(指miR-21的小分子抑制剂)2,4-二氨基代-1,3-二氮杂己环-5-腈,溶于3ml的DMSO中得到浓度为0.1M的母液。6孔板中分别接种MCF-7乳腺癌细胞,细胞数量大约为10-15万,含10%FBS的DMEM培养24h后,加入2,4-二氨基代-1,3-二氮杂己环-5-腈母液使终浓度分别为1.5、7.5、15、30、75μM,培养0.5、1、2、6、24、48h后,real-time PCR检测miR-21和其他miRNA表达,并行细胞周期及细胞凋亡检测。real-time PCR具体方法:使用RNA提取试剂盒提取细胞中总RNA,采用AMV逆转录酶进行逆转录。利用SYBR Green荧光染料掺入法进行Real-time PCR,以U6为内参,miR-21及U6引物合自上海吉玛公司。反应条件为95℃3min,95℃12s,62℃40s,读板,从第二步开始循环39次。绘溶解曲线,从69℃到96℃,每0.2s升高0.2℃。2-△△CT法分析数据。细胞周期:收集单细胞悬液,弃培养基,用冷PBS洗涤细胞两次;75%乙醇1ml重新悬浮细胞后,置于4°C冰箱中固定大于18h。4°C以1000rpm离心5min去除乙醇;PBS(0.01M,pH7.2)洗涤细胞,4°C以1000rpm离心5min两次;200μl Ranse A(1mg/ml)、37°C孵育30min;800μl PI染色液混匀后4°C避光染色30min。用流式细胞仪检测。细胞凋亡:离心收集悬浮细胞,弃培养基,用冷PBS洗涤细胞两次,用400ul1X Binding Buffer悬浮细胞,加入5ul Annexin V-FITC,轻轻混匀后于2-8°C避光条件下孵育15分钟,加入10ul PI后轻轻混匀于2-8°C避光条件下孵育5分钟。用流式细胞仪检测。
实施例3:miR-21小分子抑制剂抑制胃癌细胞
取42mg化合物2,4-二氨基代-1,3-二氮杂己环-5-腈,溶于3ml的DMSO中得到浓度为0.1M的母液。6孔板中分别接种SCG7901胃癌细胞,细胞数量大约为10-15万,含10%FBS的DMEM培养24h后,加入2,4-二氨基代-1,3-二氮杂己环-5-腈母液使终浓度分别为1.5、7.5、15、30、75μM,培养0.5、1、2、6、24、48h后,real-time PCR检测miR-21和其他miRNA表达,并行细胞周期及细胞凋亡检测。real-time PCR具体方法:使用RNA提取试剂盒提取细胞中总RNA,采用AMV逆转录酶进行逆转录。利用SYBRGreen荧光染料掺入法进行Real-time PCR,以U6为内参,miR-21及U6引物合自上海吉玛公司。反应条件为95℃3min,95℃12s,62℃40s,读板,从第二步开始循环39次。绘溶解曲线,从69℃到96℃,每0.2s升高0.2℃。2-△△CT法分析数据。细胞周期:收集单细胞悬液,弃培养基,用冷PBS洗涤细胞两次;75%乙醇1ml重新悬浮细胞后,置于4°C冰箱中固定大于18h。4°C以1000rpm离心5min去除乙醇;PBS(0.01M,pH7.2)洗涤细胞,4°C以1000rpm离心5min两次;200μl Ranse A(1mg/ml)、37°C孵育30min;800μl PI染色液混匀后4°C避光染色30min。用流式细胞仪检测。细胞凋亡:离心收集悬浮细胞,弃培养基,用冷PBS洗涤细胞两次,用400ul1X Binding Buffer悬浮细胞,加入5ul Annexin V-FITC,轻轻混匀后于2-8°C避光条件下孵育15分钟,加入10ul PI后轻轻混匀于2-8°C避光条件下孵育5分钟。用流式细胞仪检测。
关于软件的简介:
MC-Fold/MC-Sym pipeline是一种常用的RNA二级及三级结构预测的软件。将RNA相关序列输入MC-Fold中可以得到RNA的二级机构,而进一步将此二级结构输入MC-Sym中则会产生对应的三级结构。Pre-miR-21的序列我们从miRBase database(http://microrna.sanger.ac.uk/sequences/)中获得,并从中选取了Pre-miR-21发卡部分的序列,输入MC-Fold/MC-Sym pipeline软件中得到了其3D机构。我们进一步对此3D结构利用TINKER Molecular Modeling Package(http://dasher.wustl.edu/tinker/)进行了能量优化,并使用pmol2q工具加氢,加电荷,输出mol2格式文件(http://www.sourcefiles.org/Scientific/Biology/Proteins/pmol2q_2.3.0.tar.gz),然后使用AutoDockTools(ADT)将文件转换为AutoDock4识别的文件类型*.pdbqt。配体小分子库我们使用NCIDiversitySet(http://dtp.nci.nih.gov/branches/dscb/diversity_explanation.html)。经过筛选,具有成药潜能的有约1990个化合物。AutoGrid4和AutoDock4(http://autodock.scripps.edu/)被用于生成栅格和执行分子对接。受体对接位点选在Dicer酶切位点附近。对接后Estimated Inhibition Constant在nM级别的小分子有48个。而其中的化合物2,4-二氨基代-1,3-二氮杂己环-5-腈具有最强的结合能力(Ki=1.49nM,deltaG=-12.04kcal/mol).该分子与miR-21最佳对接位点。
Claims (5)
2.如权利要求1所述的抑制剂,其特征是2,4-二氨基代-1,3-二氮杂己环-5-腈与miR-21接位结合能力Ki=1.49nM,deltaG=-12.04kcal/mol。
3.miR-21小分子抑制剂2,4-二氨基代-1,3-二氮杂己环-5-腈抑制剂应用,下调miR-21小分子,抑制肿瘤细胞生长。
4.miR-21小分子抑制剂2,4-二氨基代-1,3-二氮杂己环-5-腈应用于抑制肿瘤细胞的药物。
5.miR-21小分子抑制剂2,4-二氨基代-1,3-二氮杂己环-5-腈应用于胶质瘤U87、LN229细胞系、乳腺癌MCF-7细胞系或胃癌SGC7901细胞的药物。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201210535759.0A CN103044338B (zh) | 2012-12-12 | 2012-12-12 | miR-21小分子抑制剂及应用 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201210535759.0A CN103044338B (zh) | 2012-12-12 | 2012-12-12 | miR-21小分子抑制剂及应用 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN103044338A true CN103044338A (zh) | 2013-04-17 |
CN103044338B CN103044338B (zh) | 2016-08-03 |
Family
ID=48057222
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201210535759.0A Expired - Fee Related CN103044338B (zh) | 2012-12-12 | 2012-12-12 | miR-21小分子抑制剂及应用 |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN103044338B (zh) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109810071A (zh) * | 2019-03-28 | 2019-05-28 | 中国科学院成都生物研究所 | 一种miRNA生物合成抑制剂 |
CN117695301A (zh) * | 2023-12-08 | 2024-03-15 | 哈尔滨医科大学附属第一医院 | 基于框架核酸的miRNA-21递送系统及其在角膜上皮损伤修复中的应用 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1187188A (zh) * | 1995-06-07 | 1998-07-08 | 吉尔福特药品有限公司 | 旋转异构酶活性的小分子抑制剂 |
CN1589149A (zh) * | 2001-09-24 | 2005-03-02 | 托斯克公司 | 减低毒性的顺铂制剂及其使用方法 |
US20050227932A1 (en) * | 2002-11-13 | 2005-10-13 | Tianbao Lu | Combinational therapy involving a small molecule inhibitor of the MDM2: p53 interaction |
CN1763002A (zh) * | 2004-10-22 | 2006-04-26 | 清华大学 | 冠状病毒主蛋白酶的小分子抑制剂、制备方法及其应用 |
WO2009128964A2 (en) * | 2008-01-23 | 2009-10-22 | The Regents Of The University Of California | Ensemble-based virtual screening reveals novel antiviral compounds for avian influenza neuraminidase |
-
2012
- 2012-12-12 CN CN201210535759.0A patent/CN103044338B/zh not_active Expired - Fee Related
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1187188A (zh) * | 1995-06-07 | 1998-07-08 | 吉尔福特药品有限公司 | 旋转异构酶活性的小分子抑制剂 |
CN1589149A (zh) * | 2001-09-24 | 2005-03-02 | 托斯克公司 | 减低毒性的顺铂制剂及其使用方法 |
CN101062053A (zh) * | 2001-09-24 | 2007-10-31 | 托斯克公司 | 减低毒性的顺铂制剂及其使用方法 |
US20050227932A1 (en) * | 2002-11-13 | 2005-10-13 | Tianbao Lu | Combinational therapy involving a small molecule inhibitor of the MDM2: p53 interaction |
CN1763002A (zh) * | 2004-10-22 | 2006-04-26 | 清华大学 | 冠状病毒主蛋白酶的小分子抑制剂、制备方法及其应用 |
WO2009128964A2 (en) * | 2008-01-23 | 2009-10-22 | The Regents Of The University Of California | Ensemble-based virtual screening reveals novel antiviral compounds for avian influenza neuraminidase |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109810071A (zh) * | 2019-03-28 | 2019-05-28 | 中国科学院成都生物研究所 | 一种miRNA生物合成抑制剂 |
CN109810071B (zh) * | 2019-03-28 | 2023-04-21 | 中国科学院成都生物研究所 | 一种miRNA生物合成抑制剂 |
CN117695301A (zh) * | 2023-12-08 | 2024-03-15 | 哈尔滨医科大学附属第一医院 | 基于框架核酸的miRNA-21递送系统及其在角膜上皮损伤修复中的应用 |
Also Published As
Publication number | Publication date |
---|---|
CN103044338B (zh) | 2016-08-03 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
Rawat et al. | MicroRNA in pancreatic cancer: from biology to therapeutic potential | |
Ding et al. | MicroRNAs involved in carcinogenesis, prognosis, therapeutic resistance, and applications in human triple-negative breast cancer | |
Lopez-Camarillo et al. | MetastamiRs: non-coding microRNAs driving cancer invasion and metastasis | |
Anwar et al. | MicroRNAs: emerging novel clinical biomarkers for hepatocellular carcinomas | |
Kalinowski et al. | microRNA-7: a tumor suppressor miRNA with therapeutic potential | |
Muralidhar et al. | The miR-200 family: versatile players in epithelial ovarian cancer | |
Zhang et al. | MicroRNA-520b inhibits growth of hepatoma cells by targeting MEKK2 and cyclin D1 | |
Chen et al. | Circular RNAs in physiology and non-immunological diseases | |
Jeske et al. | Upscaling human mesenchymal stromal cell production in a novel vertical-wheel bioreactor enhances extracellular vesicle secretion and cargo profile | |
Joladarashi et al. | Small engine, big power: microRNAs as regulators of cardiac diseases and regeneration | |
Ahn et al. | Diagnostic and therapeutic implications of microRNAs in non-small cell lung cancer | |
Beylerli et al. | MiRNAs as noninvasive biomarkers and therapeutic agents of pituitary adenomas | |
Jordan-Alejandre et al. | Potential miRNA use as a biomarker: from breast cancer diagnosis to metastasis | |
Granados-López et al. | Use of mature miRNA strand selection in miRNAs families in cervical cancer development | |
Wang et al. | Non-coding RNAs in physiological cardiac hypertrophy | |
Kim et al. | The tumorigenic role of circular RNA-MicroRNA Axis in cancer | |
Kedmi et al. | MicroRNAs and growth factors: an alliance propelling tumor progression | |
Cosset et al. | Human tissue engineering allows the identification of active miRNA regulators of glioblastoma aggressiveness | |
CN105176983A (zh) | 一种用于检测食管鳞癌相关血清miRNAs基因的试剂盒 | |
Koustas et al. | An insight into the arising role of MicroRNAs in hepatocellular carcinoma: future diagnostic and therapeutic approaches | |
CN104099333A (zh) | 用于乳腺癌的piRNA | |
CN105412140B (zh) | 小分子RNA hsa-miR-874在制备治疗胶质母细胞瘤药物中的应用 | |
CN103044338A (zh) | miR-21小分子抑制剂及应用 | |
Kumoğlu et al. | The biomarker features of miR-145-3p determined via meta-analysis validated by qRT-PCR in metastatic cancer cell lines | |
CN103146689B (zh) | 短发夹shRNA及其在制备治疗结直肠癌的药物中的应用 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
CF01 | Termination of patent right due to non-payment of annual fee | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160803 |