基础医学与临床 ›› 2009, Vol. 29 ›› Issue (5): 495-498.

• 研究论文 • 上一篇    下一篇

人SREBP-1c启动子报告基因的构建和功能验证

刘晓军 孔星星 王瑞 邵迪 乔爱军 常永生 方福德   

  1. 中国医学科学院基础医学研究所 北京协和医学院基础医学院 中国医学科学院基础医学研究所 北京协和医学院基础学院 中国医学科学院基础医学研究所 北京协和医学院基础学院
  • 收稿日期:2009-02-27 修回日期:2009-03-19 出版日期:2009-05-25 发布日期:2009-05-25
  • 通讯作者: 方福德

Construction of pGL3-Basic-SREBP-1c-promoter reporter gene vector and detection of its function

Xiao-jun LIU, Xing-xing KONG, Rui WANG, Di SHAO, Ai-jun QIAO, Yong-sheng CHANG, Fu-de FANG   

  1. IBMS, CAMS&PUMC IBMS, CAMS&PUMC IBMS, CAMS&PUMC
  • Received:2009-02-27 Revised:2009-03-19 Online:2009-05-25 Published:2009-05-25
  • Contact: Fu-de FANG

摘要: 目的 构建人SREBP-1c启动子的荧光素酶报告基因载体并进行功能的初步验证。 方法 提取人血基因组DNA,PCR扩增SREBP-1c的启动子,构建SREBP-1c启动子双荧光素酶的报告基因载体;用双荧光素酶活性检测其功能。Western blotting检测FoxO1对SREBP-1c蛋白的抑制作用。 结果 成功构建了pGL3-Basic-SREBP-1c-promoter的报告基因载体,共转染FoxO1明显抑制了人SREBP-1c启动子的活性,同时过表达FoxO1抑制了SREBP-1c的蛋白表达。 结论 FoxO1通过抑制SREBP-1c的转录来抑制SREBP-1c的表达。

关键词: SREBP-1c, 启动子, FoxO1, 双荧光素酶报告基因分析

Abstract: Objective To construct human SREBP-1c-promoter reporter gene vector and to detect its function.  Methods Human blood genome DNA was extracted and pGL3-Basic-SREBP-1c-promoter reporter gene vector was constructed. Furthermore, the function of SREBP-1c-promoter was confirmed by dual-luciferase reporter assay. Results pGL3-Basic-SREBP-1c-promoter reporter gene vector was constructed successfully and the promoter activity was obviously repressed by co-transfection FoxO1. Overexpression FoxO1 inhibited the SREBP-1c protein expression. Conclusion FoxO1 repressed the SREBP-1c protein expression by inhibition the SREBP-1c transcription.

Key words: SREBP-1c, Promoter, FoxO1, Dual-Luciferase Reporter Assay