基础医学与临床 ›› 2017, Vol. 37 ›› Issue (2): 211-216.

• 研究论文 • 上一篇    下一篇

干扰ELK-3抑制人肝癌细胞的上皮-间质转换

李天柱1,史铁伟1,周静1,金光虎1,张俊毅2,郝丹丹1,白春英1   

  1. 1. 内蒙古赤峰市赤峰学院医学院
    2. 赤峰学院附属医院
  • 收稿日期:2016-09-27 修回日期:2016-11-25 出版日期:2017-02-05 发布日期:2017-01-16
  • 通讯作者: 李天柱 E-mail:litianzhu2016@163.com
  • 基金资助:
    内蒙古自然科学基金

ELK-3 interference inhibits the epithelial-mesenchymal transition of human hepatocellular carcinoma cells

  • Received:2016-09-27 Revised:2016-11-25 Online:2017-02-05 Published:2017-01-16
  • Contact: Tian-Zhu LI E-mail:litianzhu2016@163.com

摘要: 目的 研究转录因子ELK-3与人肝癌细胞系HepG2和HuH7上皮-间质转换(EMT)的关系及其作用机制。方法 将HepG2和HuH7细胞分为小干扰RNA转染组和Ras-ELK-3信号通路抑制剂(XRP44X)处理组。用Western blot 检测ELK-3、ELK-3靶基因EGR-1、以及EMT相关分子钙黏附素E(E-cadherin)、波形蛋白(vimentin)的表达和MAPK信号通路蛋白p38的表达。结果 ELK-3干扰或Ras-ELK-3信号通路抑制剂(XRP44X)处理肝癌细胞后其ELK-3和ELK-3的靶基因EGR-1的蛋白表达均显著降低(P < 0.01),E-cadherin表达水平升高(P < 0.01),vimentin的表达及p38磷酸化水平均降低(P < 0.01)。结论通过干扰ELK-3下调p38抑制EMT。

关键词: ELK-3, 肝癌细胞, 上皮间质转化, p38

Abstract: Objective To investigate the relationship of ELK-3 and epithelial-mesenchymal transition (EMT),exploring its possible mechanism. Methods The human hepatocellular carcinoma cells (HCC) were divided into small interference RNA transfection group and Ras-ELK-3 pathway inhibitor group. The protein levels of ELK-3 target gene EGR-1 E-cadherin,vimentin and p38 in HCC) were determined by Western blot analysis. Results The protein levels of ELK-3 and its target gene EGR-1 in treated human hepatocellular carcinoma cells were decreased significantly as compared with the negative control group (P < 0.01). The protein level of E-cadherin was significantly increased (P < 0.01),while vimentin and p38 were decreased in HCC cells with ELK-3 interference (P < 0.01). Conclusions ELK-3 interference can inhibit the epithelial- mesenchymal transition of HCC cells by down-regulating p38.

Key words: ELK-3, hepatocellular carcinoma, epithelial-mesenchymal transition, p38

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