MicroRNA调控固有免疫应答的分子机制  

The Molecular Mechanisms of microRNA Regulating Innate Immune Response

作　　者：侯召华[1] 张建[1] 田志刚[1,2] 

机构地区：[1]山东大学药学院免疫药理与免疫治疗研究所,济南250012 [2]中国科学技术大学免疫学研究所,合肥230027

出　　处：《生物化学与生物物理进展》2008年第10期1131-1136,共6页Progress In Biochemistry and Biophysics

基　　金：国家重点基础研究发展计划(973)(2006CB504303,2004CB518807);国家高技术研究发展计划(863)(2007AA021000);国家自然科学基金(30671901,30628014,30571696)资助项目~~

摘　　要：MicroRNA(miRNA)是近几年继siRNA之后非编码RNA研究的又一热点.它通过与靶mRNA的特异性结合,在转录后水平上对基因表达进行调控.研究表明,miRNA可能参与脊椎动物固有免疫应答的多个环节.在病原微生物感染时,它们不仅成为重要的固有免疫受体活化后的信号调节分子,而且能够直接干扰病毒复制而发挥抗病毒效应.miRNA可能与经典的固有免疫应答体系共同组成机体抵御病原微生物入侵的"第一道防线".同时,病原微生物,特别是病毒还可以通过自己编码miRNA或者改变宿主细胞miRNA表达谱直接或间接地干扰很多宿主免疫相关基因的表达,实现逃逸机体免疫清除的目的.因此,miRNA水平的相互作用可能是病原微生物与其宿主展开免疫"博弈"的重要战场.MicroRNAs （miRNAs） are another interest of small, non-coding RNAs, which regulate gene expression at post-transcriptional level in a sequence-specific manner. Recent researches demonstrate that miRNAs play important roles in innate immune response at various phases in vertebrates. In order to eliminate pathogens such as virus, miRNAs are crucial molecules in signaling of innate immune, and also in directly interfering in virus replication, therefore, miRNA may work as one important aspect of classical innate immune response against pathogenic microorganism. Meanwhile, pathogenic microorganism, especially viruses, can encode miRNA or regulate the miRNAs expression in host cells to disturb the expression of many immune associated genes directly and/or indirectly, so that they can escape from immune attacking. So, pathogenic microorganism and their hosts might fight with each other at miRNA level immediately after infection in the earliest phase.

关 键 词：MIRNA 3'-UTR TLR 固有免疫 病毒 

分 类 号：Q74[生物学—分子生物学]