Micro RNA profiles and potential regulatory pattern during the early stage of spermatogenesis in mice  

作　　者：LUO MengMeng HAO LiLi HU Fen DONG YaNan GOU LiXia ZHANG WenDian WANG Xin ZHAO YuHui JIA MengChun HU SongNian ZHANG XiuJun 

机构地区：[1]College of Life Sciences, College of Psychology, Hebei United University [2]CAS Key Laboratory of Genome Sciences and Information, Beijing Institute of Genomics, Chinese Academy of Sciences [3]Hebei Normal University for Nationalities [4]Department of Reproductive Endocrinology, National Research Institute for Family Planning

出　　处：《Science China(Life Sciences)》2015年第5期442-450,共9页中国科学（生命科学英文版）

基　　金：supported by the National Natural Science Foundation of China(81170616,81072093,30671092,81302323,31100915);the Natural Science Foundation of Hebei Province(C2014209140,C2009001260,C2012401039,H2013209194,C2013209024);the Scientific and Technical Supporting Programs of Hebei Province(10276109D)

摘　　要：Spermatogenesis is a complicated and poorly understood process that relies on the precise regulation of the self-renewal and differentiation of spermatogonia. In many organisms, micro RNAs(mi RNAs) are involved in multiple developmental processes as critical regulators of transcriptional and post-transcriptional gene silencing. This study investigated the expression pattern of mi RNAs in type B spermatogonia cells(BSc) and primary spermatocytes(PSc) of mice, using a high-throughput small RNA sequencing system. The results revealed that the expression levels of Let-7 family mi RNAs were remarkably high in both cell types. Furthermore, the expression levels of mi R-21, mi R-140-3p, mi R-103, mi R-30 a, mi R-101 b and mi R-99 b were decreased during the transformation from BSc to PSc. These mi RNAs target vital genes that participate in apoptosis, cell proliferation and differentiation, junction assembly and cell cycle regulation. These results highlight the indispensable role of mi RNAs in spermatogenesis.Spermatogenesis is a complicated and poorly understood process that relies on the precise regulation of the self-renewal and differentiation of spermatogonia. In many organisms, microRNAs （miRNAs） are involved in multiple developmental processes as critical regulators of transcriptional and post-transcriptional gene silencing. This study investigated the expression pattern of miRNAs in type B spermatogonia cells （BSc） and primary spermatocytes （PSc） of mice, using a high-throughput small RNA sequencing system. The results revealed that the expression levels of Let-7 family miRNAs were remarkably high in both cell types. Furthermore, the expression levels of miR-21, miR-140-3p, miR-103, miR-30a, miR-101b and miR-99b were decreased during the transformation from BSc to PSc. These miRNAs target vital genes that participate in apoptosis, cell proliferation and differentiation, junction assembly and cell cycle regulation. These results highlight the indispensable role of miRNAs in spermatogenesis.

关 键 词：SPERMATOGENESIS miRNA profiling post-transcriptional regulation focal adhesion cytoskeleton dynamic Wnt signaling pathway 

分 类 号：Q492[生物学—生理学]