基础医学与临床 ›› 2014, Vol. 34 ›› Issue (9): 1250-1254.

• 研究论文 • 上一篇    下一篇

microRNA-34c调控c-Met抑制肝细胞癌的发生发展

于晓剑,王燕,李瑞峰,李莉,刘玉刚   

  1. 山东大学医学院
  • 收稿日期:2014-01-13 修回日期:2014-03-25 出版日期:2014-09-05 发布日期:2014-09-02
  • 通讯作者: 刘玉刚 E-mail:liu.yugang@sdu.edu.cn
  • 基金资助:
    国家自然科学基金青年基金

MicroRNA-34c suppress the development of hepatocellular carcinoma by downregulating c-Met

  • Received:2014-01-13 Revised:2014-03-25 Online:2014-09-05 Published:2014-09-02

摘要: 目的 探讨 microRNA-34c及其靶基因c-Met在原发性肝癌发生发展中的作用。 方法 荧光定量PCR及Western blot分别检测人的肝癌组织及癌旁组织中 microRNA-34c与c-Met蛋白的表达、细胞系HepG2.2.15转染 microRNA-34c后c-Met mRNA 及蛋白的表达、细胞系HepG2.2.15转染microRNA-34c或c-Met干扰RNA后P53蛋白的表达。建立裸鼠成瘤模型并进行瘤内注射治疗,测量计算肿瘤体积。 结果 microRNA-34c在人的肝癌组织中表达比癌旁组织明显降低(P<0.01),c-Met在肝癌组织中表达较癌旁组织升高。HepG2.2.15细胞系中转染microRNA-34c后c-Met表达降低(P<0.01)。HepG2.2.15细胞系中转染microRNA-34c及c-Met干扰RNA后P53表达升高(P<0.05)。成瘤裸鼠经microRNA-34c质粒瘤内注射后肿瘤体积较对照组明显减小(P<0.05)。 结论 microRNA-34c可能通过调节其靶基因c-Met的表达抑制原发性肝癌的发生和发展。

关键词: 原发性肝癌, 微小RNA-34c, 肝细胞生长因子受体, P53

Abstract: Objecttive To study the effect of microRNA-34c on the development of hepatocellular carcinoma. Methods Expressions of microRNA-34c and c-Met protein in clinical hepatocellular carcinoma tissue and para-carcinoma tissue, c-Met mRNA and protein in HepG2.2.15 cells transfected with microRNA-34c, P53 protein in HepG2.2.15 cells transfected with microRNA-34c or c-Met siRNA were detected by qPCR and Western blot respectively. Xenograft nude mice modle of liver cancer was established and the volume of tumors was measured. Results MicroRNA-34c expression is significantly decreased in the hepatocellular carcinoma tissue compared with para-carcinoma tissue(P<0.01),while the c-Met expression is inverse.MicroRNA-34c can inbit c-Met expression in HepG2.2.15 cells(P<0.01).Downregulation of c-Met ehanced P53 activity(P<0.05).MicroRNA-34c inhibited the growth of liver cancer in xenograft nude mice modle(P<0.05). Conclusion MicroRNA-34c may play a role in suppressing the development of hepatocellular carcinoma by downregulating c-Met.

Key words: hepatocellular carcinoma, microRNA-34c, c-met, P53

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