›› 2011, Vol. 38 ›› Issue (1): 72-75.

• 生物技术 • 上一篇    下一篇

牛γ-干扰素单克隆抗体的制备及ELISA检测方法的建立

李超,林祥梅,梅琳,李全芬,韩雪清   

  1. (中国检验检疫科学研究院,北京 100029)
  • 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: 韩雪清

Developement of Monoclonal Antibody against Bovine Interferon-γ and Establishment of ELISA Detection Method

LI Chao,LIN Xiang-mei,MEI Lin,LI Quan-fen,HAN Xue-qing   

  1. (Chinese Academy of Inspection and Quarantine,Beijing 100029, China)
  • Received:1900-01-01 Revised:1900-01-01 Online:2011-01-01 Published:2011-01-01
  • Contact: HAN Xue-qing

摘要: 建立牛结核病的γ-干扰素(BovIFN-γ)免疫学检测方法。本研究利用rBovIFN-γ抗原免疫Balb/c小鼠,经5次免疫后,通过淋巴细胞杂交瘤技术及间接ELISA筛选制备抗BovIFN-γ的单克隆抗体,在McAb及多克隆抗体的基础上建立双抗体夹心ELISA,并进一步优化ELISA反应条件。结果表明,获得一株能稳定分泌抗BovIFN-γ McAb的杂交瘤细胞株A12E9,分泌单克隆抗体腹水效价为1∶107,属于IgG1亚类,具有良好的特异性;所建立的双抗体夹心ELISA方法,BovIFN-γ最低检测限为40 ng/mL,与其他蛋白不发生交叉反应,表现出良好的特异性。该方法为建立牛结核病的γ-干扰素诊断方法奠定了基础。

关键词: 牛γ-干扰素; 单克隆抗体; 双抗体夹心ELISA

Abstract: Establish bovine tuberculosis BovIFN-γ diagnostic method. Balb/c mice were immunized 5 times with purified reccombinant BovIFN-γ protein, and the McAb against BovIFN-γ was prepared by hybridoma technique, then a double antibody sandwich ELISA method was developed based on the McAb and polyclonal antibody, and further optimized the reaction conditions. Finally, a hybridoma which stably secreted specific monoclonal antibody against BovIFN-γ was named A12E9. The titer of McAb was 1∶107, and the McAb belonged to IgG1 subclass. The sensitivity of double antibody sandwich ELISA method was 40 ng/mL, with good specificity. This method provides a basis for furth researches on the bovine tuberculosis BovIFN-γ diagnostic method.

Key words: BovIFN-γ; monoclonal antibody; double antibody sandwich ELISA

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