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山东大学学报(理学版) ›› 2014, Vol. 49 ›› Issue (1): 25-30.doi: 10.6040/j.issn.1671-9352.0.2013.445

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黏着斑蛋白Supervillin的抗体制备及纯化

张佟佟,钱积成,朱长军,董智雄*   

  1. 天津师范大学分子细胞系统生物学重点实验室, 天津 300387
  • 收稿日期:2013-09-18 出版日期:2014-01-20 发布日期:2014-01-15
  • 通讯作者: 董智雄(1984- ),男,博士,助理研究员,研究方向为驱动蛋白与有丝分裂相关研究.Email: dongzx882@gmail.com
  • 作者简介:张佟佟(1987- ),女,硕士研究生,研究方向为细胞分子生物学.Email:zhangtong1025@126.com
  • 基金资助:

    国家自然科学基金资助项目(31271485);2011年教育部“新世纪优秀人才支持计划”资助项目(NCET111066);天津市应用基础与前沿技术研究计划重点资助项目(12JC2DJC21400);国家自然科学基金青年基金资助项目(31301138);天津师范大学中青年教授学术创新推进计划资助项目(52XC1001);天津师范大学博士基金资助项目(52XB1104);天津师范大学“渤海学者”基金资助项目

The preparation and purification of Supervillin antibody

ZHANG Tong-tong, QIAN Ji-cheng, ZHU Chang-jun, DONG Zhi-xiong*   

  1. Key Laboratory of Molecular and Cellular Systems Biology, Tianjin Normal University, Tianjin 300387, China
  • Received:2013-09-18 Online:2014-01-20 Published:2014-01-15

摘要:

黏着斑蛋白Supervillin(SVIL)是一个细胞膜结合蛋白分子,定位于细胞与细胞外基质接触面的黏着斑。为了进一步研究SVIL蛋白分子在细胞内的功能,应用分子克隆技术构建原核细胞表达质粒pGEXKG-SVILC302和pHIS8SVILC302,并在细菌BL-21(DE3)中用IPTG分别诱导表达GST-SVILC302和HIS-SVILC302融合蛋白。用谷胱甘肽琼脂糖凝胶柱亲和层析纯化GST-SVILC302蛋白,然后免疫新西兰大白兔制备SVIL多克隆抗体,并用Ni-NTA 柱子结合HIS-SVILC302蛋白,对其进行交联,纯化抗体。Western Blot(WB)和Immunofluorescence(IF)实验证明该抗体可以识别外源的GFP-SVIL和内源的SVIL蛋白,并且可以用于蛋白免疫沉淀实验。表明此SVIL多克隆抗体具有较高的特异性和灵敏度,为进一步研究黏着斑蛋白SVIL在细胞内的功能奠定了坚实的基础。

关键词: Supervillin, 纯化, 抗体

Abstract:

Gelling spot protein Supervillin(SVIL) is a membrane protein molecule located in cells and extracellular matrix interface adhesive spots. To further study the cellular function of SVIL protein,we constructed plasmids of pGEXKG-SVILC302 and pHIS8-SVILC302 to express recombinant protein GST-SVILC302 and HIS-SVILC302 in E.coli BL21-DE3, respectively. The GST-SVILC302 protein was purified by Glutathione affinity chromatography and used to immune New Zealand white rabbits to generate the polyclonal antibody of SVIL. The HIS-SVILC302 protein was crosslinked with Ni-TNA Beads for affinity purification of the antibody. The results of Western Blot and Immunoflurescence experiments demonstrated that the antibody can specific recognize exogenous GFP-SVIL and endogenous SVIL protein. Our results showed that anti-SVIL polyclonal antibody we generated has high specificity and sensitivity enough to study the cellular functions of SVIL protein.

Key words: Supervillin, antibody, purification

中图分类号: 

  • Q78
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