生物技术通报 ›› 2013, Vol. 0 ›› Issue (10): 109-112.

• 研究报告 • 上一篇    下一篇

小鼠Dnmt1启动子荧光素酶报告基因的构建及活性分析

张远1,杨旬旬2, 吴风瑞2,3, 刘勇2,3, 丁彪2,3, 王彩红2, 黄继昌2, 李文雍2,3   

  1. (1. 安徽农业大学生命科学学院,合肥 230036 ;2. 胚胎发育与生殖调节安徽省重点实验室,阜阳 236037 ; 3. 阜阳师范学院生命科学学院,阜阳 236037)
  • 收稿日期:2013-04-11 修回日期:2013-10-15 出版日期:2013-10-14 发布日期:2013-10-15
  • 作者简介:张远, 女, 硕士研究生, 研究方向: 胚胎发育的分子机制;E-mail :zhangyuan4091470@hotmail.com
  • 基金资助:

    国家自然科学基金项目(31071310,31201789), 安徽省教育厅高等学校自然科学研究重点项目(KJ2013A202)

Construction and Analysis of Luciferase Reporter Vectors of Mouse Dnmt1 Gene Promoter

Zhang Yuan1,Yang Xunxun2, Wu Fengrui2,,3, Liu Yong2,,3, Ding Biao2,,3, Wang Caihong2, Huang Jichang2, Li Wenyong2,,3,   

  1. (1. College of Life Science,Anhui Agricultural University,Hefei 230036 ;2. Key Laboratory of Embryo Development and Reproductive Regulation,Anhui Province,Fuyang 236037 ;3. College of Life Science,Fuyang Normal University,Fuyang 236037)
  • Received:2013-04-11 Revised:2013-10-15 Published:2013-10-14 Online:2013-10-15

摘要:

为研究小鼠Dnmt1 基因启动子5' 端缺失片段活性,以小鼠基因组DNA 为模板,通过聚合酶链式反应(PCR) 扩增4 条不同长度的小鼠Dnmt1 基因启动子5' 端系列缺失片段,双酶切后克隆入pGL3-Basic 荧光素酶报告基因载体,构建Dnmt1 启动子-pGL3-Basic 重组质粒。随后经脂质体转染入NIH/3T3 细胞并检测各缺失片段荧光素酶活性。结果表明,成功构建Dnmt1 启动子5' 端系列缺失片段-pGL3-Basic 荧光报告基因重组质粒。经双荧光素酶报告基因检测后发现,所有的重组质粒均表现出荧光素酶活性, 且最长缺失片段Dnmt1-1-pGL3-Basic 活性最强,约为其他的3 倍左右。结果初步证明小鼠Dnmt1 启动子在-1 866-+57 bp 区域具有较强转录活性。

关键词: 小鼠, Dnmt1启动子, NIH/3T3 细胞系, 活性分析

Abstract:

To study the different 5'-flanking regions activity of mouse Dnmt1 gene, 4 truncated Dnmt1 promoters were amplified by polymerase chain reaction(PCR)from mouse genomic DNA and subcloned into pMD19-T vector, and then cloned into the pGL3-Basic luciferase reporter gene vector to construct Dnmt1 promoter-pGL3-Basic recombinants. After the recombinants were transfected into NIH/3T3 cells with Lipofectamine, relative luciferase activity were obtained by using the Dual-Luciferase Reporter Assay System and Glomax. Results showed that the recombinants of 5'-flanking sequential deletion of mouse Dnmt1 promoter-pGL3-Basic reporter gene were successfully constructed. The relative luciferase activity of Dnmt1-1-pGL3-Basic was three times higher than the other three truncated constructs. Together, this study was preliminary confirmed that the mouse Dnmt1 promoter region(-1 866-+57 bp)had strong transcriptional activity.

Key words: Mouse, Dnmt1 promoter, NIH/3T3 cell line, Activity analysis