生物技术通报 ›› 2013, Vol. 0 ›› Issue (1): 129-133.

• 研究报告 • 上一篇    下一篇

Ezrin 多克隆抗体制作及应用

张宏玲, 万骏, 严飞, 张新胜, 曹威, 陶伟, 黄来强   

  1. 1. 清华大学生命科学学院,北京 100084 ;2. 清华大学深圳研究生院生命与健康学部 生物医药研究中心和基因与抗体治疗重点实验室,深圳 518055
  • 收稿日期:2012-08-24 修回日期:2013-01-31 出版日期:2013-01-30 发布日期:2013-01-30
  • 作者简介:张宏玲,女,博士研究生,研究方向:细胞生物学;E-mail: zhanghl08@mails.tsinghua.edu.cn
  • 基金资助:
    国家自然科学基金项目(30570960,30900749),深圳市重点实验室建设与提升计划

The Production and Application of Ezrin Polyclonal Antibody

Zhang Hongling, Wan Jun ,Yan Fei ,Zhang Xinsheng,Cao Wei, Tao Wei ,Huang Laiqiang   

  1. 1. School of Life Sciences,Tsinghua University,Beijing 100084;
    2. The Shenzhen Key Lab of Gene and Antibody Therapy,Center for Biotech & BioMedicine and Division of Life & Health Sciences,Graduate School at Shenzhen,Tsinghua University,Shenzhen 518055
  • Received:2012-08-24 Revised:2013-01-31 Published:2013-01-30 Online:2013-01-30

摘要: 构建Ezrin 原核重组表达载体pET-28a(+)-ezrin,将其转化至大肠杆菌BL21(DE3)中,诱导获得Ezrin 蛋白,将经镍柱亲和层析纯化后的蛋白分别免疫新西兰大耳兔和昆明小鼠(KM),获得抗血清,采用ELISA 和Western blotting,免疫荧光测定其效价和特异性。ELISA 对抗血清进行效价测定表明抗血清可与抗原发生特异性免疫反应;通过Western blotting 对抗血清进行鉴定表明抗血清可以识别几种细胞株内的特异性条带,其相对分子量为82 kD,与预测分子量相符;免疫荧光试验表明抗血清可以识别细胞内的Ezrin 蛋白,且定位情况与文献报道相符。最后通过protein G 对抗血清进行了纯化。结果表明用该方法制备的Ezrin 多克隆抗体有较高的特异性和灵敏度。

关键词: 原核表达纯化 , Ezrin , 蛋白 , 动物免疫 , 抗血清 , 抗体鉴定

Abstract: Constructed Ezrin prokaryotic expression vector pET-28a(+)-ezrin, the recombinant plasmid was transformed into E. coliBL21(DE3), induced Ezrin protein was purified through Ni-chelating affinity chromatography and purified protein was used to immunize NewZealand rabbits and Kunming mice, antiserum was removed. The titer and specificity of anti-sera were determined by ELISA, Western blottingand immunofluorescence. The specificity of the anti-Ezrin antibody was identified by Western blot and immunofluorescence. The results showedthat anti-sera antibody reacted with antigen and detected a specific band of 82 kD, and the size was agreed with the predicted molecular mass,localization dectected by inmmunofluorescence was in good agreement with the references. Finally, the anti-surem was purified by protein G.These results suggested that the Ezrin polyclonal antibody revealed high sensitivity and specificity.

Key words: Prokaryotic expression and purification , Ezrin , Animal immunization , Anti-serum , Polyclonal antibody