河南农业科学 ›› 2023, Vol. 52 ›› Issue (12): 142-148.DOI: 10.15933/j.cnki.1004-3268.2023.12.016

• 畜牧·兽医 • 上一篇    下一篇

牛支原体Vsp 蛋白的原核表达及单克隆抗体的制备

徐佳1,孙怀昌2   

  1. (1.扬州大学学报编辑部,江苏 扬州 225009;2.扬州大学兽医学院/江苏省动物重要疫病与人兽共患病防控协同创新中心,江苏 扬州 225009)
  • 收稿日期:2023-08-11 出版日期:2023-12-15 发布日期:2024-01-05
  • 通讯作者: 孙怀昌(1956-),男,江苏涟水人,教授,博士,主要从事兽医微生物学与免疫学研究。E-mail:sunh@yzu.edu.cn
  • 作者简介:徐佳(1987-),女,江苏扬州人,编辑,博士,主要从事编辑出版、预防兽医方面研究。E-mail:xuebao_xj@126.com
  • 基金资助:
    江苏高校优势学科建设工程资助项目(PAPD)

Prokaryotic Expression of Vsp Protein and Preparation of Monoclonal Antibody against Mycoplasma bovis

XU Jia1,SUN Huaichang2   

  1. (1.Editorial Department of Journal of Yangzhou University,Yangzhou 225009,China;2.College of Veterinary Medicine/Jiangsu Co‐innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses,Yangzhou University,Yangzhou 225009,China)
  • Received:2023-08-11 Published:2023-12-15 Online:2024-01-05

摘要: 为研发牛支原体的快速诊断试剂,利用大肠埃希菌原核表达系统表达重组CaIgV-Vsp蛋白,制备CaIgV-Vsp蛋白单克隆抗体。结果显示,成功构建了重组质粒pET-CaIgV-Vsp;SDS-PAGE电泳结果显示,融合蛋白为可溶性蛋白;ELISA与Western blot检测结果显示,重组CaIgV-Vsp蛋白与牛支原体阳性血清可发生特异性反应,具有较好的免疫原性;成功制备了4株稳定分泌CaIgV-Vsp蛋白单克隆抗体的杂交瘤细胞株,腹水ELISA效价分别为5.2×105、1.3×105、2.6×105、2.6×105

关键词: 牛支原体, 可变表面脂蛋白, 原核表达, 单克隆抗体

Abstract: In order to develop a rapid diagnostic reagent for Mycoplasma bovis,the monoclonal antibody against CaIgV‐Vsp protein was prepared after expressing recombinant CaIgV‐Vsp protein in the prokaryotic expression system of Escherichia coli. The results showed that the recombinant plasmid pET‐CaIgV‐Vsp was successfully constructed.SDS‐PAGE analysis showed that the fusion protein was soluble protein.The results of ELISA and Western blot showed that the recombinant CaIgV‐Vsp protein could react specifically with the positive serum of Mycoplasma bovis and had good immunogenicity. Four hybrioma cell lines secreting monoclonal antibodies against CaIgV‐Vsp protein were prepared successfully. The ELISA titers of ascites were 5.2×105,1.3×105,2.6×105 and 2.6×105,respectively.

Key words: Mycoplasma bovis, Variable surface lipoprotein(Vsp), Prokaryotic expression, Monoclonal antibody

中图分类号: