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中国应用生理学杂志 ›› 2016, Vol. 32 ›› Issue (3): 279-282.doi: 10.13459/j.cnki.cjap.2016.03.024

• 技术方法 • 上一篇    下一篇

Flag和GFP双标记的BKCa通道α亚基表达质粒的构建、鉴定和序列分析

李涛1, 程秀丽2, 黄文俊1, 闫莉2, 曹济民2, 谭晓秋1,2   

  1. 1. 四川医科大学医学电生理学 省部教育部重点实验室, 四川省心血管疾病防治协同创新中心, 泸州 646000;
    2. 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生理学系, 北京 100005
  • 收稿日期:2015-06-29 修回日期:2016-01-25 出版日期:2016-05-28 发布日期:2018-06-12
  • 通讯作者: 曹济民,Tel:13982765332;E-mail:caojimin@126.com;谭晓秋,Tel:13982765332;E-mail:tanxiao-qiu1981@163.com E-mail:caojimin@126.com;tanxiao-qiu1981@163.com
  • 基金资助:
    国家自然科学基金资助项目(31300948);泸州市-四川医科大学联合资助项目(2015LZCYD-S03)

Construction and identification of BKCaαsubunit expression plas-mid with double labeling of Flag and GFP

LI Tao1, CHENG Xiu-li2, HUANG Wen-jun1, YAN Li2, CAO Ji-min2, TAN Xiao-qiu1,2   

  1. 1. Key Laboratory of Medical Electrophysiology of Ministry of Education, Collaborative Innovation Center for Prevention and Treatment of Cardiovascular Disease/Institute of Cardiovascular Research, Sichuan Medical University, Luzhou 646000;
    2. Department of Physiology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences, School of Basic Medicine, Peking Union Medical College, Beijing 100005, China
  • Received:2015-06-29 Revised:2016-01-25 Online:2016-05-28 Published:2018-06-12
  • Supported by:
    国家自然科学基金资助项目(31300948);泸州市-四川医科大学联合资助项目(2015LZCYD-S03)

摘要: 目的:采用重叠PCR法构建表达质粒,为下一步研究通道功能奠定基础。方法:在已有编码大电导钙激活钾通道(BKCa)通道α亚单位的表达质粒pcDNA3.1-hSlo的基础上,采用重叠PCR法构建Flag和GFP双标签标记的表达质粒pcDNA3.1-Flag-hSlo-GFP (Flag-hSlo-GFP)。结果:构建的表达质粒Flag标签插入BKCa通道的S1-S2胞外环,GFP标签连接BKCa通道的胞内C末端,测序结果证实质粒构建成功。结论:成功构建BK通道基因表达质粒Flag-hSlo-GFP,重叠PCR能够很好的用于长片段基因扩增和插入片段的实验。

关键词: 大电导钙激活钾通道, 重叠PCR, 基因工程

Abstract: Objective:This study aimed to construct a large conductance calcium activated potassium channel α (BKCa) subunit plasmid with two tags by the overlapping PCR technique to set up a steady base for future ion channel study. Methods:Based on the existing coding BKCa channel α subunit expression plasmid pcDNA3.1-hSlo, we constructed a double-tag expression plasmid, namely, pcDNA3.1-Flag-hSlo-GFP (Flag-hSlo-GFP). Results:Flag tag was inserted into the S1-S2 extracellular loop of BKCa channel α subunit, and GFP tag was connected to the C-terminus of BKCa channel α subunit. Sequence of the constructed plasmid was confirmed successful. Conclusion:The expression plasmid Flag-hSlo-GFP was constructed successfully with overlapping PCR. Overlapping PCR is a valuable method for amplifying long size genes.

Key words: large conductance calcium activated potassium channels, overlapping PCR, gene cloning

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