The invention discloses a group of small interfering RNA molecules for silencing the mRNA expression of the target gene of microphthalmos transcription factor. The antisense chain of the siRNA provided by the invention is composed of 19 \u2011 29 nucleotides, and the sense chain is composed of 15 \u2011 21 nucleotides; there are 15 \u2011 19 nucleotides complementary between the sense chain and the antisense chain to form a double chain structure. The 2 \u2011 ribose such as all or part of the nucleotides in the siRNA provided by the invention can be modified to prevent nucleoside enzyme degradation. The siRNA molecule or molecular structure with homology greater than 60% provided by the invention can be used alone or in combination, the silencing efficiency of target gene expression of MITF mRNA can reach more than 40%, and the disease or skin pigmentation caused by MITF mutation or overexpression can be treated.
【技术实现步骤摘要】
沉默小眼畸形转录因子mRNA表达的siRNA分子
本专利技术属于生物医药
,具体涉及一种沉默基因或蛋白质表达的siRNA序列及其应用。
技术介绍
小眼畸形相关转录因子(Microphthalmia-AssociatedTranscriptionFactor,MITF)具有典型的螺旋-环-螺旋-亮氨酸拉链结构(basichelix-loop-helixleucinezipper,bHLXZp),属于MiT转录因子超家族成员(TachibanaM,etal.MITF:astreamflowingforpigmentcells.PigmentCellRes.2000;13(4):230-240.)。研究发现MITF主要在色素细胞中表达,包括成黑色素细胞(melenoblast)和视网膜色素上皮细胞(retinalpigmentepithelium,RPE),其它如肥大细胞和破骨细胞等中也有表达(CarreiraS,etal.MITFregulationofDialcontrolsmelanomaproliferationandinvasiveness.GenesDev.2006;20(24):3426-3439.)。皮肤黑色素细胞来源于神经嵴,人类皮肤分布着大量成熟黑色素细胞,这些表皮色素细胞具有分裂共那个和杀菌作用,能够抵抗紫外线和其它外界刺激,MITF深入参与其分化(SlominskiA.Neuroendocrineactivityofthemelanocyte.ExperimentalDermatolo ...
【技术保护点】
1.一种沉默小眼畸形转录因子mRNA表达的siRNA序列,siRNA序列为正义链和反义链组成双链结构分子的核苷酸序列,其特征在于:所述的siRNA序列的靶序列、正义链和反义链分别为下列品种中的一种:/nsiMITF-m-2:/n靶序列:CTGGAAATGCTAGAATATA,/n正义链:5'-CUGGAAAUGCUAGAAUAUAdTdT-3',/n反义链:5'-UAUAUUCUAGCAUUUCCAGdTdT-3';/nsiMITF- m-5:/n靶序列:CCTAGAATCAAGTTATAAT,/n正义链:5'-CCUAGAAUCAAGUUAUAAUdTdT-3',/n反义链:5'-AUUAUAACUUGAUUCUAGGdTdT-3';/nsiMITF- m-8:/n靶序列:GAACGAAGAAGAAGATTTA,/n正义链:5'-GAACGAAGAAGAAGAUUUAdTdT-3',/n反义链:5'-UAAAUCUUCUUCUUCGUUCdTdT-3';/nsiMITF- m-9:/n靶序列:GAAGAAGATTTAACATAAA,/n正义链:5'-GAAGAAGAUUUAACAUA ...
【技术特征摘要】
1.一种沉默小眼畸形转录因子mRNA表达的siRNA序列,siRNA序列为正义链和反义链组成双链结构分子的核苷酸序列,其特征在于:所述的siRNA序列的靶序列、正义链和反义链分别为下列品种中的一种:
siMITF-m-2:
靶序列:CTGGAAATGCTAGAATATA,
正义链:5'-CUGGAAAUGCUAGAAUAUAdTdT-3',
反义链:5'-UAUAUUCUAGCAUUUCCAGdTdT-3';
siMITF-m-5:
靶序列:CCTAGAATCAAGTTATAAT,
正义链:5'-CCUAGAAUCAAGUUAUAAUdTdT-3',
反义链:5'-AUUAUAACUUGAUUCUAGGdTdT-3';
siMITF-m-8:
靶序列:GAACGAAGAAGAAGATTTA,
正义链:5'-GAACGAAGAAGAAGAUUUAdTdT-3',
反义链:5'-UAAAUCUUCUUCUUCGUUCdTdT-3';
siMITF-m-9:
靶序列:GAAGAAGATTTAACATAAA,
正义链:5'-GAAGAAGAUUUAACAUAAAdTdT-3',
反义链:5'-UUUAUGUUAAAUCUUCUUCdTdT-3';
siMITF-m-10:
靶序列:CCACTTTAGCAAATAAACA,
正义链:5'-CCACUUUAGCAAAUAAACAdTdT-3',
反义链:5'-UGUUUAUUUGCUAAAGUGGdTdT-3'。
2.根据权利1所述的沉默小眼畸形转录因子mRNA表达的siRNA序列,其特征在于:为采用Westernblot方法测试所获知的沉默效率较高的下列靶序列、正义链和反义链构成的siRNA序列中的一种:
siMITF-m-5:
靶序列:CCTAGAATCAAGTTATAAT,
正义链:5'-CCUAGAAUCAAGUUAUAAUdTdT-3',
反义链:5'-AUUAUAACUUGAUUCUAGGdTdT-3';
siMITF-m-8:
靶序列:GAACGAAGAAGAAGATTTA,
正义链:5'-GAACGAAGAAGAAGAUUUAdTdT-3',
反义链:5'-UAAAUCUUCUUCUUCGUUCdTdT-3';
siMITF-m-9:
靶序列:GAAGAAGATTTAACATAAA,
正义链:5'-GAAGAAGAUUUAACAUAAAdTdT-3',
反义链:5'-UUUAUGUUAAAUCUUCUUCdTdT-3'。
3.根据权利1或2述的沉默...
【专利技术属性】
技术研发人员:季爱民,岑柏宏,黎权辉,黄文,
申请(专利权)人:武汉泽智生物医药有限公司,
类型:发明
国别省市:湖北;42
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