基础医学与临床 ›› 2015, Vol. 35 ›› Issue (10): 1320-1324.

• 研究论文 • 上一篇    下一篇

人胰岛素抑制大鼠肝细胞系BRL-3A凋亡且促增殖

王改平,陈莎莎,李晓芳,杨婧,赵卫明,常翠芳,徐存拴   

  1. 河南师范大学
  • 收稿日期:2015-04-23 修回日期:2015-07-01 出版日期:2015-10-05 发布日期:2015-09-30
  • 通讯作者: 王改平 E-mail:xiaowang0529@163.com
  • 基金资助:
    国家自然科学基金面上项目;河南师范大学青年科学基金项目;河南师范大学博士科研启动基金资助项目

Human insulin could inhibit apoptosis and promote proliferation of rat liver cell line BRL-3A

  • Received:2015-04-23 Revised:2015-07-01 Online:2015-10-05 Published:2015-09-30

摘要: 目的 探讨人胰岛素对体外培养的大鼠肝细胞BRL-3A增殖和凋亡的影响。方法 人胰岛素作用于BRL-3A后,用MTT法检测细胞活力,流式细胞仪检测细胞凋亡和细胞周期,qRT-PCR检测相关基因的表达。结果 人胰岛素能剂量依赖性地促进BRL-3A增殖(P<0.05或P<0.01);500 nmol/L人胰岛素处理3天后,处于G0/G1期的细胞比例显著下降(P<0.05);促凋亡基因BAX表达下调(P<0.05),而促细胞增殖基因CCNA2表达上调(P<0.05)。结论 人胰岛素可通过下调BAX表达和上调CCNA2表达,从而抑制大鼠肝细胞BRL-3A凋亡,促进细胞增殖。

关键词: 关键词:人胰岛素, BRL-3A细胞, 细胞凋亡, 细胞周期

Abstract: Objective To study the effect of human insulin on cell cycle progression and apoptosis in rat liver cell line BRL-3A in vitro. Methods MTT method was used to observe the effect of insulin on cell activity, and flow cytometry was used to detect cell apoptosis and cell cycle. Then qRT-PCR was used to evaluate the expression of related genes. Results Human insulin induced the proliferation of BRL-3A cells in a dose-dependent manner (P<0.05或P<0.01); After 3 days treated by human insulin (500 nmol/L), the proportion of cells in G0/G1 phases remarkably decreased (P<0.05). Moreover, pro-apoptotic BAX was down-regulated (P<0.05), while cell proliferation-related gene CCNA2 was up-regulated (P<0.05). Conclusions Human insulin could inhibit the apoptosis of BRL-3A cell line and induce its proliferation due to the down-regulated expression of BAX and up-regulated expression of CCNA2.

Key words: Key Words: human insulin, BRL-3A cells, apoptosis, cell cycle