摘要
microRNA(miRNA)是一类广泛存在于多细胞动物中的进化保守的大小为18~25nt的非编码小分子RNA,可以通过与靶基因mRNA的非编码区(3’UTR)结合导致mRNA降解,或阻断mRNA翻译而调节基因表达。let-7是在线虫中发现的具有转录后调节功能的小分子RNA,具有高度的保守性,研究发现,1et-7参与动物个体多个器官组织的发育过程。作者综述了近年来lev7参与调控脑、神经系统、心肺系统和肌肉发育等组织器官的研究成果,初步阐述了1et-7调控组织器官发育的作用机制,以期为进一步探索let-7在动物体内的功能奠定基础。
microRNAs (miRNAs) are evolutionary conserved small noncoding RNAs of 18 to 25 nt that were found in all metazoans, and it regulates gene expression by base pairing with their target mRNA,leading to mRNA cleavage or translational repression, let-7 is a small RNA mole- cule originally found in worms,and it is highly conserved and plays a vital role in posttranscrip- tional regulation. The study found that let-7 takes part in the development of organs and tissues. This review summarized the recent progresses about the function of let-7 miRNA in the develop- ment of brain, nervous system, lung and cardiovascular system, and muscle development, and elu- cidated the possible mechanism of regulating the developmental processes of animal tissues and organs. It will provide the basis for further exploring the function of let-7 miRNA in animals.
出处
《中国畜牧兽医》
CAS
北大核心
2015年第2期342-346,共5页
China Animal Husbandry & Veterinary Medicine
基金
国家肉牛产业技术体系-合肥综合试验站(CARS-38)
安徽省农业科学院院长青年创新基金项目(14B0428)
安徽省农业科学院高层次人才培养及引进项目