miR-181b-5p靶向调控Nr6a1抑制GC-1spg细胞的增殖与迁移  

miR-181b-5p Inhibits Proliferation and Migration of GC-1spg Cells through Targeting Nr6a1

作　　者：周世华[1] 李丹[1] 刘晓雯[1] 段红艳[1] 

机构地区：[1]湖南大学生物学院,中国湖南长沙410082

出　　处：《生命科学研究》2017年第4期337-342,共6页Life Science Research

基　　金：国家自然科学基金资助项目(81270735;81571494)

摘　　要：Micro RNA(mi RNA)是一段长约为22 nt的内源性非编码单链RNA,研究表明mi RNA对正常精子发生和雄性发育必不可少。为了探究mi R-181b-5p在雄性生殖细胞发育中的功能以及寻找其靶基因,首先采用流式细胞术、噻唑蓝检测以及划痕实验分析了mi R-181b-5p在小鼠GC-1spg精原细胞系中的生物学效应,随后利用Targetscan和GO数据库等生物信息学软件预测发现生殖核受体Nr6a1可能为其靶基因,进而通过双荧光素酶报告基因实验以及q PCR证实了mi R-181b-5p与Nr6a1的靶向识别关系,最后采用细胞功能回补实验明确了mi R-181b-5p通过靶向调控Nr6a1来抑制GC-1spg细胞的增殖和迁移。结果表明mi R-181b-5p通过其靶基因Nr6a1在精子发生中起到负调控的作用。miRNA, approximately 22 nts in length, is an endogenous and non-coding single-stranded RNA. Some researches indicated that miRNA is essential to normal spermatogenesis and male development. In or- der to find out the impact and target gene of miR-181b-5p in germ cell development, flow cytomety, MTT and scratch assays were used to analyze the biological effects of miR-181b-Sp on mouse GC-lspg cells. Then Nr6a1 was predicted as one of target genes of miR-181b-Sp by bioinformatics software such as Targetscan and GO database. Subsequently, the target recognition between miR-181b-Sp and Nr6a1 was verified through dual luciferase reporter gene assay and qPCR. Lastly, by functional complementation assay, it proved that miR-181b-5p could inhibit proliferation and migration of GC-lspg cells through targeting Nr6a1. These results suggest that miR-181b-Sp plays a negative role in regulation of spermatogenesis by targeting Nr6a1.

关 键 词：miR-181b-5p Nr6a1 靶基因 精子发生 生物信息学 

分 类 号：Q291[生物学—细胞生物学] R394.3[医药卫生—医学遗传学]