浙江农业学报 ›› 2017, Vol. 29 ›› Issue (5): 729-736.DOI: 10.3969/j.issn.1004-1524.2017.05.07

• 动物科学 • 上一篇    下一篇

靶向鸡Stra8基因的miRNA预测及鉴定

王颖洁, 左其生, 张良良, 张文慧, 金晶, 王飞, 纪艳芹, 靳锴, 何娜娜, 李碧春*, 张亚妮*   

  1. 扬州大学 动物科学技术学院 江苏省动物遗传繁育与分子设计重点实验室,江苏 扬州 225009
  • 收稿日期:2016-12-08 出版日期:2017-05-20 发布日期:2017-06-06
  • 通讯作者: 张亚妮,E-mail: ynzhang@yzu.edu.cn;李碧春,E-mail: yubcli@yzu.edu.cn
  • 作者简介:王颖洁(1992-),女,江苏镇江人,博士研究生,主要从事动物胚胎工程与遗传工程研究。E-mail: maggieyingjie@foxmail.com
  • 基金资助:
    国家自然科学基金(31301959); 江苏省自然科学基金(BK20161331); 校大学生学术科技创新基金资助项目(x20160665); 江苏高校优势学科建设工程资助项目

Prediction and validation of miRNA targeting chicken Stra8 gene

WANG Yingjie, ZUO Qisheng, ZHANG Liangliang, ZHANG Wenhui, JIN Jing, WANG Fei, JI Yanqin, JIN Kai, HE Nana, LI Bichun*, ZHANG Yani*   

  1. College of Animal Science and Technology, Yangzhou University, Key Laboratory of Animal Breeding Reproduction and Molecular Design for Jiangsu Province, Yangzhou 225009, China
  • Received:2016-12-08 Online:2017-05-20 Published:2017-06-06

摘要: 为克隆如皋黄鸡Stra8基因的3’UTR,寻找靶向Stra8基因的microRNA(miRNA),以鸡精原干细胞的cDNA为模板,根据NCBI数据库Stra8的CDS序列设计引物,通过3’RACE技术克隆Stra8基因的3’UTR,并构建相应的荧光素酶表达载体和突变载体;利用生物学预测软件对靶向Stra8 3’UTR的miRNA进行预测,选择评分最高的miRNA进行慢病毒载体构建;以pRL-TK为内参,分别将miRNA与Stra8 3’UTR荧光素酶表达载体和突变载体共转染DF-1细胞,利用双荧光素酶基因报告系统对miRNA进行活性检测。结果表明,采用3’RACE技术成功克隆Stra8 基因的3’UTR;Targetscan生物在线软件预测到靶向Stra8基因的4个特异性较高的miRNA,并成功构建其相应的慢病毒载体;双荧光素酶活性检测结果显示,gga-miR-1a、gga-miR-31、gga-miR-218均可通过3’UTR序列抑制Stra8基因的表达,其中gga-miR-31抑制效果最佳。该结果可为后续深入探讨gga-miR-31介导调控的Stra8基因在雄性生殖细胞分化中的调控网络提供依据。

关键词: 鸡, miRNA, Stra8, gga-miR-31, 双荧光素酶活性检测系统

Abstract: This paper was aimed to clone 3’UTR of Stra8 gene of Rugao yellow chicken, and predicted the microRNAs (miRNA) targeting the gene to provide theoretical basis for further function study of Stra8 in the process of embryonic stem cells differentiation into the male germ cell mediated by miRNAs. 3'UTR of Stra8 was cloned by 3'RACE based on primers designed from cDNA of Gallus gallus in NCBI, then the vectors of Luciferase expression and mutation was constructed. Targetscan bioinformatics database was used to predict the prospective miRNAs targeting to Stra8 and synthesize miRNA mimics. The candidate miRNA mimics and the vectors of Stra8-3’UTR were transiently co-transfected with into DF-1 cells, and pRL-TK vector was used as an internal control reporter. The dual-luciferase reporter assay system was used to evaluate the activity of luciferase. The results showed that 3'UTR of Stra8 was cloned. Four miRNAs has been predicted that targeting to Stra8 by using the online bioinformatics database and their lentiviral vectors were constructed successfully. Dual luciferase activity test results showed that gga-miR-1a,gga-miR-31,gga-miR-218 can inhibit gene expression of Stra8, but inhibitor of gga-miR-31 was the best. The gga-miR-31 could significantly inhibit expression of Stra8, the results will provide references for the investigation on Stra8 gene regulatory networks in male germ cell differentiation.

Key words: Gallus gallus, miRNA, Stra8, gga-miR-31, dual luciferase activity detection

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