天津农学院学报 ›› 2019, Vol. 26 ›› Issue (3): 51-56.doi: 10.19640/j.cnki.jtau.2019.03.012

• 研究与简报 • 上一篇    下一篇

牛骨骼肌卫星细胞中miR-143互作lncRNA-HZ5的鉴定及其相互调控作用分析

王轶敏, 张蔚然, 张俊星, 刘新峰, 郭宏, 丁向彬通信作者   

  1. 天津农学院 动物科学与动物医学学院 天津市农业动物繁育与健康养殖重点实验室,天津 300384
  • 收稿日期:2019-06-18 出版日期:2019-09-30 发布日期:2019-09-30
  • 通讯作者: 丁向彬(1978–),男,教授,博士,研究方向为动物细胞工程、动物繁育生物技术。E-mail:xiangbinding@163.com。
  • 作者简介:王轶敏(1980–),女,讲师,博士,研究方向为动物细胞与转基因工程。E-mail:wangyimin112@aliyun.com。张蔚然(1992–),男,硕士在读,研究方向为动物细胞与转基因工程。E-mail:zhangweiran1992@sina.com。王轶敏和张蔚然并列为第一作者。
  • 基金资助:
    国家自然科学基金资助项目(31201021); 天津市“131”创新型人才培养工程第一层次人选计划项目(无编号); 天津市高校“中青年骨干创新人才培养计划”人选项目(无编号)

The analysis of the interaction relationship between miR-143 and lncRNA-HZ5 in bovine skeletal muscle satellite cells

WANG Yi-min, ZHANG Wei-ran, ZHANG Jun-xing, LIU Xin-feng, GUO Hong, DING Xiang-bin   

  1. Tianjin Key Laboratory of Agricultural Animal Breeding and Healthy Husbandry, College of Animal Science and Veterinary Medicine, Tianjin Agricultural University, Tianjin 300384, China
  • Received:2019-06-18 Online:2019-09-30 Published:2019-09-30

摘要: 为探究miR-143与其互作lncRNA之间的关系及其在牛骨骼肌卫星细胞成肌分化过程中的潜在作用机制,选取两个表达丰度较高miR-143的预测互作lncRNA(lncRNA-HZ5和lncRNA-HZ8)进行研究。采用双荧光素酶试验验证miR-143对预测互作lncRNA的靶向调控作用,采用qRT-PCR技术检测miR-143表达水平改变对预测互作lncRNA表达的影响,并采用qRT-PCR和western blot技术检测干扰互作lncRNA表达后对miR-143表达水平及miR-143靶基因表达水平的影响。双荧光素酶试验结果表明,miR-143可直接调控lncRNA-HZ5的表达;在牛肌卫星细胞中过表达miR-143后,lncRNA-HZ5的表达水平显著下调,而抑制miR-143表达后,lncRNA-HZ5的表达水平显著上调;采用siRNA干扰lncRNA-HZ5的表达,发现抑制lncRNA-HZ5表达能够下调miR-143表达,并上调miR-143靶基因IGFBP5的蛋白水平。研究结果表明,在牛骨骼肌卫星细胞中miR-143可以和lncRNA-HZ5发生相互调控作用,其对牛肌卫星细胞成肌分化的调控作用可能是通过互作来完成的。

关键词: miR-143, lncRNA-HZ5, 牛, 骨骼肌卫星细胞, 成肌分化

Abstract: In order to explore the relationship between miR-143 and its interacted lncRNA and its mechanism in the process of bovine myogenic differentiation, two predicted highly expressed(lncRNA lncRNA-HZ5 and lncRNA-HZ8)were chosen for further research. The relationship between miR-143 and predicted interacted lncRNA were identified by dual-luciferase assay and qRT-PCR detection, the influence of lncRNA on the protein level of miR-143’s target gene was detected by western blot. The results showed that lncRNA-HZ5 was directly regulated by miR-143 using dual-luciferase assay. The expression of lncRNA-HZ5 was significantly down-regulated when miR-143 was over expressed, and significantly up-regulated when miR-143 was inhibited. It was found that inhibition of lncRNA-HZ5 expression using siRNA could down-regulate miR-143 and up-regulate the protein level of miR-143’s target gene IGFBP5. The results showed that the miR-143 could interact with lncRNA-HZ5 in bovine skeletal muscle satellite cells, which indicated that miR-143 may regulate the bovine myogenic differentiation by interacting with lncRNA-HZ5.

Key words: miR-143, lncRNA-HZ5, bovine, skeletal muscle satellite cells, myogenic differentiation

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