上海交通大学学报（医学版）

上海交通大学学报（医学版）

• 论著（基础研究） • 上一篇    下一篇

Klotho基因真核表达载体的构建及其在TCMK-1细胞中的稳定表达

沈 玥1，路丽明2，钱盈盈1，关雪晶1，齐渊元2，倪兆慧1，钱家麒1，严玉澄1   

  1. 上海交通大学 医学院 1.附属仁济医院肾脏科， 上海 200127； 2.上海市免疫学研究所， 上海 200025
  • 出版日期:2014-05-28 发布日期:2014-05-30
  • 通讯作者: 严玉澄, 电子信箱: yucheng.yan@163.com。
  • 作者简介:沈 玥（1987—）， 女， 硕士生; 电子信箱: avrilshen@hotmail.com。
  • 基金资助:

    国家自然科学基金（81170687）；上海市卫生系统新优青培养项目（2011XYQ015）；上海市科委基础研究重大项目(12DJ1400200)；上海市科委基础研究重点项目（11JC1410802）

Construction of eukaryotic expression vector of Klotho gene and its stable expression in TCMK-1 cell line

SHEN Yue1, LU Li-ming2, QIAN Ying-ying1, GUAN Xue-jing1, QI Yuan-yuan2, NI Zhao-hui1, QIAN Jia-qi1, YAN Yu-cheng1   

  1. 1.Department of Renal Division, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200127, China; 2.Shanghai Institute of Immunology, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
  • Online:2014-05-28 Published:2014-05-30
  • Supported by:

    National Natural Science Foundation of China, 81170687; New Otstanding Young Scientists Training Project of Shanghai Municipal Health Bureau, 2011XYQ015； Major Basic Research Project of Science and Technology Commission of Shanghai Municipality, 12DJ1400200; Key Basic Research Project of Science and Technology Commission of Shanghai Municipality, 11JC1410802

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摘要：

目的 构建小鼠Klotho基因真核表达载体，进而获得稳定表达Klotho分子的小鼠肾上皮细胞株TCMK-1。方法 应用PCR方法扩增带有FLAG标签的Klotho编码基因，并克隆至载体pCD-CXIN （CMV-MCS-IRES-Neomycin）的相应位点；经酶切及测序鉴定重组质粒，脂质体转染TCMK-1细胞，通过G418筛选得到稳定表达Klotho分子的TCMK-1细胞株；Real-Time PCR检测Klotho mRNA水平，Western blotting检测Klotho蛋白的表达。结果 将带有FLAG标签的Klotho基因重组表达载体转染至TCMK-1细胞后，经G418筛选获得TCMK-1细胞株。与对照组相比，Klotho mRNA和蛋白表达均显著升高。结论 成功构建了Klotho基因的重组表达载体，并获得了稳定表达Klotho基因的TCMK-1细胞株，为进一步研究Klotho基因和蛋白在小鼠肾上皮细胞中的作用奠定了基础。

关键词: Klotho, 内部核糖体进入位点序列, FLAG标签, TCMK-1细胞

Abstract:

Objective To construct the eukaryotic expression vector of the mouse Klotho gene and to acquire mouse kidney epithelial cell line TCMK-1 with stable expresses Klotho. Methods The Klotho-FLAG gene was amplified by PCR and cloned to the corresponding site of eukaryotic expression vector pCD-CXIN (CMV-MCS-IRES-Neomycin). Once confirmed by enzyme digestion and sequencing, the recombinant pCD-CXIN-Klotho plasmids were transfected to TCMK-1 cells by lipidosome and a cell line that stably expressed Klotho was obtained by G418 screening. The expression of Klotho mRNA was detected by Real-Time PCR, and the expression of Klotho protein was detected by Western blotting. Results The recombinant Klotho gene expression vector with FLAG tag was constructed, and the cell line obtained by transfection and G418 screening presents higher expression of Klotho mRNA and protein compared with that of control groups. Conclusion The recombinant Klotho expression vector has been successfully constructed and the TCMK-1 cell line with stable expression of Klotho is obtained, which might be constructive for the research on the functions of Klotho protein in mouse kidney epithelial cells.

Key words: Klotho, internal ribosome entry sites sequence, FLAG tag, TCMK-1 cells