›› 2011, Vol. 38 ›› Issue (1): 76-80.

• 生物技术 • 上一篇    下一篇

抗庆大霉素噬菌体抗体库的构建和筛选

孟辉,温凯,沈建忠,王战辉,张素霞   

  1. (中国农业大学动物医学院,北京 100193)
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2011-01-01 发布日期:2011-01-01
  • 通讯作者: 张素霞

Construction of Anti-gentamicin Phage Display scFv Libraries,Selection and Identification

MENG Hui,WEN Kai,SHEN Jian-zhong,WANG Zhan-hui,ZHANG Su-xia   

  1. (College of Veterinary Medicine,China Agricultural University,Beijing 100193,China)
  • Received:1900-01-01 Revised:1900-01-01 Online:2011-01-01 Published:2011-01-01
  • Contact: ZHANG Su-xia

摘要: 本研究使用噬菌体抗体库技术筛选针对庆大霉素(gentamicin)的单链抗体。以抗庆大霉素杂交瘤细胞株(2A3)为基因来源构建scFv基因,连接至pCANTAB5E噬菌粒载体,通过电击转化TG1(Escherichia coli TG1)构建了库容量为6.5×106噬菌体单链抗体库。抗庆大霉素噬菌体单链抗体库进行三轮富集筛选,通过Phage-ELISA技术成功筛选出了9个抗庆大霉素噬菌体阳性克隆,为开发新型残留检测用抗体奠定了基础。

关键词: 庆大霉素; 噬菌体抗体库; 单链抗体

Abstract: In this study, we constructed a phage display antibody library specific for gentamicin (GEN) to get the anti-getamicin single chain antibody(scFv). We used the anti-gentamicin hybridoma (2A3) as a source of gene to produce full-length scFv fragment. The full-length scFv fragment was ligated into the phagemid vector pCANTAB5E. Then the phagemid was transformed to E.coli TGl cells by electroporation. The size of antibody libraries was 6.5×106. The primary phage display library was riched by stabilized antigen immunoaffinity panning with GEN-OVA conjugates. 9 clones congtained insert and showed GEN-positive in phage-ELISA, which lay the foundation for further immunological analysis.

Key words: gentamicin; phage display antibody library; single chain antibody

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