›› 2009, Vol. 36 ›› Issue (9): 50-54.

• 生物技术 • 上一篇    下一篇

猪瘟病毒E2蛋白A/D区单抗的制备及其抗原表位的初步研究

张春玲1,宗先伟2,杨文超1,张敬梅1,彭明义1,程宝艳3,余为一1   

  1. (1.安徽农业大学动物科技学院, 合肥 230036; 2.山东六和集团有限公司, 德州 253000;3.安徽省农业科学院畜牧兽医研究所, 合肥 230031)
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2009-09-20 发布日期:2009-09-20
  • 通讯作者: 余为一

Preparation and Identification of Monoclonal Antibodies against the Truncated E2 Protein of Classical Swine Fever Virus

ZHANG Chun-ling1, ZONG Xian-wei2, YANG Wen-chao1, ZHANG Jing-mei1, PENG Ming-yi1, CHENG Bao-yan3, YU Wei-yi1   

  1. (1.College of Animal Science and Technology, Anhui Agricultural University, Hefei 230036, China; 2.Shandong Liuhe Poultry Company, Dezhou 253000, China; 3.Institute of Animal and Veterinary Science, Anhui Academy of Agricultural Science, Hefei 230031, China)
  • Received:1900-01-01 Revised:1900-01-01 Online:2009-09-20 Published:2009-09-20
  • Contact: YU Wei-yi

摘要: 应用分子克隆技术将猪瘟病毒E2蛋白部分基因插入到载体pGEX-4T-1中构建重组质粒pGEX-4T-E(A),在大肠杆菌Rosetta中表达融合蛋白GST-E(A),以纯化的融合蛋白免疫BALB/c小鼠,取其脾细胞与骨髓瘤细胞SP2/0进行融合,经克隆化和间接ELISA筛选,获得了C3、A1两株稳定分泌抗猪瘟病毒E2蛋白单克隆抗体的杂交瘤细胞株,ELISA结果显示,其腹水效价为1∶128000和1∶256000。Western blotting结果证实,单克隆抗体C3和A1能与猪瘟病毒(classical swine fever virus,CSFV)发生特异性的反应,表明该单抗是针对猪瘟病毒E2蛋白的保守线性表位。

关键词: 猪瘟病毒; E2蛋白; 单克隆抗体; 鉴定

Abstract: A truncated gene encoding the major antigenic domains of E2 protein of classical swine fever virus (CSFV) was amplified and cloned into pGEX-4T-1 expression vector to obtain recombinant pGEX-4T-E(A).The recombinant GST-E(A)protein expressed in E.coli Rosetta. BALB/c mice was immunized with purified GST-E(A)protein as antigen and mouse splenic cells were fused with SP2/0 cells. Hybridoma cells were screened by ELISA and subcloned. Two hybridoma cells C3 and A1 secreting anti-CSFV monoclonal antibodies were obtained. The ELISA showed the antibody titres were 1∶128000 and 1∶256000. Western blotting indicated that C3 and A1 reacted with CSFV specially. These results demonstrated that the McAbs were specific reagent for CSFV, and recognized a linear conserved epitope on the E2 protein.

Key words: classical swine fever virus; E2 protein; monoclonal antibody; identification

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