›› 2015, Vol. 42 ›› Issue (2): 358-364.doi: 10.16431/j.cnki.1671-7236.2015.02.019

• 生物技术 • 上一篇    下一篇

猪传染性胃肠炎病毒NSP8蛋白单克隆抗体的制备及抗原表位的初步鉴定

董慧1, 张鑫2, 陈建飞2, 时洪艳2, 石达2, 常铁城3, 谷凤丽2,4, 徐天2, 王智琴5, 刘明春1, 冯力2   

  1. 1. 沈阳农业大学畜牧兽医学院, 沈阳 110161;
    2. 中国农业科学院哈尔滨兽医研究所, 兽医生物技术 国家重点实验室, 猪传染病研究室, 哈尔滨 150001;
    3. 黑龙江八一农垦大学动物科技学院, 大庆 163319;
    4. 东北农业大学生命科学学院, 哈尔滨 150030;
    5. 首都医科大学基础医学院, 北京 100069
  • 收稿日期:2014-09-12 出版日期:2015-02-20 发布日期:2015-02-13
  • 通讯作者: 王智琴, 冯力 E-mail:wzq7626@126.com;fengli_h@163.com
  • 作者简介:董慧(1989-),女,黑龙江哈尔滨人,硕士生,研究方向:兽医药理学与毒理学,E-mail:donghui_12215084@126.com
  • 基金资助:
    黑龙江省高等学校科技创新团队项目:猪病毒性腹泻疾病防治(2011TD001)

Preparation of Monoclonal Antibody and Preliminary Identification of Antigenic Epitope of NSP8 Protein in Porcine Transmissible Gastroenteritis Virus

DONG Hui1, ZHANG Xin2, CHEN Jian-fei2, SHI Hong-yan2, SHI Da2, CHANG Tie-cheng3, GU Feng-li2,4, XU Tian2, WANG Zhi-qin5, LIU Ming-chun1, FENG Li2   

  1. 1. College of Animal Science and Veterinary Medicine, Shenyang Agricultural University, Shenyang 110161, China;
    2. Division of Swine Infectious Disease, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin 150001, China;
    3. College of Animal Science and Technology, Heilongjiang Bayi Agricultural University, Daqing 163319, China;
    4. College of Life Science, Northeast Agricultural University, Harbin 150030, China;
    5. College of Basic Medical, Capital Medical University, Beijing 100069, China
  • Received:2014-09-12 Online:2015-02-20 Published:2015-02-13

摘要: 为鉴定猪传染性胃肠炎病毒(porcine transmissible gastroenteritis virus,TGEV)NSP8蛋白的抗原表位,本研究对GST-NSP8重组蛋白进行了原核表达,并用纯化后的重组蛋白免疫6周龄BALB/c小鼠,取免疫小鼠脾脏,采用常规杂交瘤细胞融合方法,经3次亚克隆后制备了1株稳定分泌抗NSP8蛋白的单克隆抗体杂交瘤细胞株。分泌的单克隆抗体亚类鉴定其重链为IgG1型,轻链为κ链;杂交瘤细胞培养上清的效价为1:3 200。Western blotting试验结果表明该单克隆抗体能识别原核及真核表达的NSP8重组蛋白。利用截短表达的方法对NSP8蛋白进行抗原表位的鉴定,初步确定了单克隆抗体针对的抗原表位序列为31SPQILKQLTKAFNIAKSDFEREASV55。本研究制备的单克隆抗体及对抗原表位的鉴定,为TGEV NSP8蛋白相关功能的研究奠定了基础。

关键词: 猪传染性胃肠炎病毒; NSP8基因; 单克隆抗体; 抗原表位

Abstract: To identify the epitope of porcine transmissible gastroenteritis virus (TGEV),the NSP8 gene was cloned into the vector pGEX-6P-1 for expression in E.coli.BALB/c mice of 6 week-old were immunized with the recombinant NSP8 protein.Then the monoclonal antibody against NSP8 protein was prepared by lymphocyte hybridoma technique.The monoclonal antibody belonged to IgG1 subtype with κ chain.The titers in cell culture medium of the hybidomas was 1:3 200.Western blotting assay showed that the monoclonal antibody was able to recognize the recombinant NSP8 protein.Epitope on NSP8 protein was identified by truncated expression and the linear epitope of 31SPQILKQLTKAFNIAKSDFEREASV55 was identified by Western blotting with the monoclonal antibody.This monoclonal antibody and its epitope mapping provided a basis for further study of the function of the TGEV NSP8.

Key words: porcine transmissible gastroenteritis virus; NSP8 gene; monoclonal antibody; antigenic epitope

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