基础医学与临床 ›› 2014, Vol. 34 ›› Issue (4): 459-463.

• 研究论文 • 上一篇    下一篇

慢病毒介导E2F-1基因过表达抑制人胃癌MGC-803细胞增殖的分子机制

曹稳珑,韦尉元,罗文,张笑石,严林海,谢玉波,肖强   

  1. 广西医科大学第一附属医院
  • 收稿日期:2013-08-21 修回日期:2013-11-25 出版日期:2014-04-05 发布日期:2014-03-31
  • 通讯作者: 肖强 E-mail:xiaoqiang20050@aliyun.com
  • 基金资助:
    转录因子E2F-1抑制胃癌转移的研究;E2F-1基因过表达治疗胃癌的体内实验研究;E2F-1 基因沉默逆转胃癌细胞多药耐药性及其作用机制的研究

The molecular mechanisms of human gastric cancer cell line MGC-803 proliferation suppressed by overexpression of E2F-1 mediated by lentivirus

  • Received:2013-08-21 Revised:2013-11-25 Online:2014-04-05 Published:2014-03-31

摘要: 目的 探索E2F-1基因过表达抑制人胃癌MGC-803细胞增殖的分子机制。方法 用携带E2F-1基因的重组慢病毒颗粒(LV-E2F-1-GFP)感染人胃癌MGC-803细胞,作为实验组(LV-E2F-1-GFP组);以对照慢病毒颗粒(LV-GFP)感染人胃癌MGC-803细胞,作为阴性对照组(LV-GFP组);空白对照组常规培养,不做任何处理。用RT-PCR和Western blot技术检测细胞中Skp2、Bax、Bcl-2和Survivin基因的表达。结果 与LV-GFP组和空白对照组比较,LV-E2F-1-GFP组人胃癌MGC-803细胞Skp2、Bcl-2和Survivin基因的mRNA和蛋白的表达降低(P<0.05),Bax基因的mRNA和蛋白的表达上调(P<0.05)。结论 慢病毒介导E2F-1基因过表达可能通过降低Skp2、Survivin、Bcl-2基因表达和上调Bax基因表达来抑制人胃癌MGC-803细胞增殖。

关键词: 胃癌, MGC-803细胞, E2F-1,过表达

Abstract: Objective To study the molecular mechanisms of human gastric cancer cell line MGC-803 proliferation suppressed by overexpression of E2F-1 . Methods The experimental group(LV-E2F-1-GFP group ),gastric cancer MGC-803 cells were transfected with the recombinant lentivirirus vector (LV-E2F-1-GFP) ,the negative control group were transfected with the negative control lentiviral vector (LV- GFP),the blank control group was untreated. The expression of Skp2, Bax, Bcl-2 and Survivin were detected by semi-quantitative PT-PCR and Western blot method . Results Compared with LV- GFP group and blank control group,the mRNA levels of Skp2, Bcl-2 and Survivin in the LV-E2F-1-GFP group were reduced(P<0.05),the protein levels of Skp2, Bcl-2 and Survivin in the LV-E2F-1-GFP group were reduced(P<0.05), the mRNA level of Bax and the protein level of Bax were up regulated (P<0.05). Conclusion The proliferation of human gastric cancer MGC-803 cells was inhibited by overexpression of E2F-1 mediated by lentivirus, the effect may be related with down-regulation of Skp2,Survivin,Bcl-2 expression and up-regulation of Bax expression.

Key words: Gastric cancer , MGC-803 cells , E2F-1, overexpression

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