实用肿瘤学杂志 ›› 2016, Vol. 30 ›› Issue (2): 103-108.doi: 10.11904/j.issn.1002-3070.2016.02.002

• 论著 • 上一篇    下一篇

TRIM5α对肝癌细胞增殖和凋亡的影响

余庆, 张文美, 孙迎迎, 龚媛媛, 李东升, 王小莉   

  1. 湖北医药学院附属太和医院胚胎干细胞研究湖北省重点实验室(十堰 442000)
  • 收稿日期:2016-01-15 出版日期:2016-04-28 发布日期:2016-04-28
  • 通讯作者: 王小莉,E-mail:xiaolitina@126.com
  • 作者简介:余庆,男,(1994-),本科,从事肿瘤基因治疗方面的研究
  • 基金资助:
    湖北省自然科学基金(2012FFA037);湖北医药学院自然科学研究启动金(2011QDZR-26)

The effect of TRIM5α on the proliferation and apoptosis of hepatocellular carcinoma cells

YU Qing, ZHANG Wenmei, SUN Yingying, GONG Yuanyuan, LI Dongsheng, WANG Xiaoli   

  1. Department of Hubei Key Laboratory of Embryonic Stem Cell Research,Taihe Hospital,Hubei University of Medicine,Shiyan 442000,China
  • Received:2016-01-15 Online:2016-04-28 Published:2016-04-28

摘要: 目的 探讨TRIM5α(Tripartite motif 5 alpha)对人肝癌细胞增殖和凋亡的影响。方法 构建TRIM5α质粒,通过酶切、PCR和测序鉴定。将TRIM5α质粒转入人肝癌细胞株(HepG2),通过PCR、Western blot检测TRIM5α的表达。采用RTCA仪器实时检测细胞的增殖情况,采用流式细胞仪检测细胞的凋亡,Western blot检测凋亡相关蛋白的表达。结果 本研究成功构建了TRIM5α质粒,RT-PCR和Western blot的结果显示构建的TRIM5α质粒可转入HepG2细胞中并且能够抑制肝癌细胞的增殖促进其凋亡。TRIM5α主要是通过抑制Bcl-2的表达,激活Caspase-3的表达从而引起肝癌细胞凋亡,并且TRIM5α还可抑制肝癌细胞体内成瘤。结论 TRIM5α可抑制人肝癌细胞的增殖促进其凋亡并抑制体内成瘤,为进一步研究其作用机制及其临床应用奠定基础。

关键词: TRIM5α, 肝癌细胞, 增殖, 凋亡

Abstract: Objective To study the effect of Tripartite motif 5 alpha(TRIM5α)on the proliferation and apoptosis of hepatocellular carcinoma cells.Methods The TRIM5α construction was identified by enzyme digestion,PCR and sequencing.The TRIM5α plasmid was transfected into HepG2 cells and identified by RT-PCR and Western blot.The cell proliferation was monitored by RTCA real-time instrument and cell apoptosis was analyzed by flow cytometry.The apoptosis related proteins were detected by Western blot.Results The TRIM5α vector was successfully constructed.The result of RT-PCR and Western blot showed that TRIM5α plasmid could enter HepG2 cells.TRIM5α could inhibit HepG2 cells proliferation also increased their apoptosis through down-regulation of Bcl-2 expression and activation of Caspase-3 expression.TRIM5α also could inhibit the tumor formation of HepG2 cells in vivo.Conclusion TRIM5α inhibited cell proliferation,promoted apoptosis and weakened the tumorigenic ability of HepG2 cells.This will establish the foundation for the mechanism study and the clinic use of TRIM5α for tumor therapy in the future.

Key words: Tripartite motif 5 alpha, Hepatocellular carcinoma cells, Proliferation, Apoptosis

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