基础医学与临床 ›› 2012, Vol. 32 ›› Issue (4): 346-349.

• 错配修复基因与肠癌专题 • 上一篇    下一篇

敲低错配修复基因hMLH1可导致人胚肾细胞株293t的微卫星不稳定

高巍1,盛剑秋1,陆晓娟2,卢俊宇1,金鹏王亚婷1   

  • 收稿日期:2011-11-03 修回日期:2012-01-03 出版日期:2012-04-05 发布日期:2012-03-21
  • 通讯作者: 高巍 E-mail:gaowei027@163.com
  • 基金资助:
    国家自然基金

Knocked down mismatch repair gene hMLH1 could influence microsatillite stability in human embryonic kidney cell line

  • Received:2011-11-03 Revised:2012-01-03 Online:2012-04-05 Published:2012-03-21
  • Supported by:
    National?Natural?Science?Foundation?of?China

摘要: 目的:探讨人胚胎肾细胞株293t中错配修复基因hMLH1的表达量与微卫星稳定性的关系。方法:构建针对hMLH1 基因的shRNA 表达载体,并干扰293t细胞hMLH1的表达,评价敲低hMLH1前后293t细胞微卫星状态的变化。结果:干扰组293t细胞相比对照组hMLH1表达明显敲低,微卫星状态由稳定变为不稳定。结论:293t细胞的hMLH1表达量与其微卫星状态密切相关,敲低hMLH1可导致293t细胞的微卫星不稳定。

关键词: 错配修复基因, hMLH1, 微卫星不稳定, RNA干扰

Abstract: Abstract: Objectinve To explored the ralations between expression of MLH1 gene and microsatillites stability in human embryonic kidney cell line 293t. Methods A plasmid vector encoding shRNA targeting hMLH1 (pGPU6/GFP/Neo-shMLH1) was constructed to knock down hMLH1 gene in 293t cell line,and evaluated the microsatallite stability before and after Knocked down. Results the expression of MLH1 in knocked down group was obviously knocked down in 293t cell, and the microsatallite states was changed from microsatallite stability into microsatallite instability conpared with control group. Conclusion The results showed that the expression of MLH1 gene was intimately associated with the microsatallite stability, knocked down hMLH1 protein could lead to microsatallite instability in cell line 293t.

Key words: MMR gene, hMLH1, microsatallite instability, RNA interference