《中国畜牧兽医》 ›› 2017, Vol. 44 ›› Issue (2): 554-560.doi: 10.16431/j.cnki.1671-7236.2017.02.035

• 预防兽医 • 上一篇    下一篇

鸭1型甲肝病毒亚型VP1蛋白单克隆抗体的研制及鉴定

傅秋玲1,2,3, 刘伟1, 黄瑜1,2,3, 傅光华1,2,3, 万春和1,2,3, 程龙飞1,2,3, 陈红梅1,2,3, 施少华1,2,3, 刘荣昌1,2,3, 陈珍1,2,3, 陈翠腾1,2,3, 林建生1,2,3   

  1. 1. 福建省农业科学院畜牧兽医研究所, 福州 350013;
    2. 福建省畜禽疫病防治工程技术研究中心, 福州 350013;
    3. 福建省禽病防治重点实验室, 福州 350013
  • 收稿日期:2016-07-28 出版日期:2017-02-20 发布日期:2017-02-25
  • 通讯作者: 黄瑜 E-mail:huangyu_815@163.com
  • 作者简介:傅秋玲(1985-), 女, 江西吉安人, 硕士, 研究方向:水禽疫病免疫学, E-mail:qiulingfu0822@163.com
  • 基金资助:

    国家自然科学基金(31472222);现代农业产业技术体系建设专项(CARS-43);福建省公益类科研院所专项(2014R1023-3、2015R1023-3和2016R1102);福建省农业科学院畜牧兽医研究所基金(MYQJ2015-6);福建省优良蛋鸭品种与设施化养殖创新产业化工程项目(2014-2016)

Development and Identification of Monoclonal Antibodies against VP1 Protein of DHAV-1a

FU Qiu-ling1,2,3, LIU Wei1, HUANG Yu1,2,3, FU Guang-hua1,2,3, WAN Chun-he1,2,3, CHENG Long-fei1,2,3, CHEN Hong-mei1,2,3, SHI Shao-hua1,2,3, LIU Rong-chang1,2,3, CHEN Zhen1,2,3, CHEN Cui-teng1,2,3, LIN Jian-sheng1,2,3   

  1. 1. Institute of Animal Husbandry and Veterinary Medicine, Fujian Academy of Agricultural Sciences, Fuzhou 350013, China;
    2. Fujian Animal Diseases Control Technology Development Center, Fuzhou 350013, China;
    3. Fujian Provincial Key Laboratory for Avian Diseases Control and Prevention, Fuzhou 350013, China
  • Received:2016-07-28 Online:2017-02-20 Published:2017-02-25

摘要:

为制备抗鸭1型甲肝病毒亚型(DHAV-1a)结构蛋白VP1的单克隆抗体(MAbs),本研究以pGEX-VP1重组蛋白免疫BALB/c小鼠,同时以纯化浓缩的全病毒作为包被抗原,建立了筛选抗VP1蛋白阳性杂交瘤细胞株的间接ELISA方法,经融合、筛选制备杂交瘤细胞及鉴定MAbs的稳定性、特异性、腹水效价和中和活性等生物学活性,获得了2株持续且稳定分泌抗体的杂交瘤细胞(1A2和5G3)。MAbs腹水ELISA效价分别为1:3.2×104和1:2.0×106。亚类鉴定均为IgG1/κ型。Western blotting结果显示,2株MAbs均能与DHAV-1a VP1蛋白和DHAV-1a全病毒发生特异性反应。特异性试验结果显示2株MAbs能与鸭1型甲肝病毒(DHAV-1)和DHAV-1a发生交叉反应。中和试验结果显示5G3株具有中和活性。结果表明2株MAbs的ELISA效价高、特异性强、稳定性好,均能与DHAV-1和DHAV-1a全病毒发生特异性反应,其中一株具有中和活性。

关键词: 鸭1型甲肝病毒亚型; 单克隆抗体; 生物学特性

Abstract:

To prepare the monoclonal antibodies (MAbs) against DHAV-1a, hybridomas were produced by fusing SP2/0 cells with spleen cells from mouse immunized with DHAV-1a pGEX-VP1 recombinant protein. Two hybridomas stablely secreting MAbs against VP1 protein were identified by indirect ELISA detection with DHAV-1a as coating antigen. The ascetic fluids of MAbs were 1:3.2×104 and 1:2.0×106, respectively. The MAbs were IgG1 with κ chain. Western blotting analysis showed that the MAbs could recognize the recombinant VP1 protein and DHAV-1a. The neutralization tests showed that one MAb (5G3) had better neutralization activity. Therefore, the results showed that the ELISA titers and specialities of two MAbs were very good, with excellent stability. In addition, they all had cross interaction with DHAV-1 and DHAV-1a, one of which had good neutralization activity.

Key words: DHAV-1a; monoclonal antibody; biological characteristics

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