《中国畜牧兽医》 ›› 2017, Vol. 44 ›› Issue (9): 2593-2597.doi: 10.16431/j.cnki.1671-7236.2017.09.008

• 生物技术 • 上一篇    下一篇

水泡性口炎病毒N蛋白原核表达及免疫原性分析

张雪1, 娄丽2, 陈阳1, 周晓丽1, 刘钊1, 贾赟1, 孙颖杰3   

  1. 1. 辽宁出入境检验检疫局, 大连 116001;
    2. 丹东出入境检验检疫局, 丹东 118000;
    3. 四川出入境检验检疫局, 成都 610000
  • 收稿日期:2017-02-27 出版日期:2017-09-20 发布日期:2017-09-22
  • 通讯作者: 贾赟, 孙颖杰 E-mail:jxy750921@163.com;sunyjciq@163.com
  • 作者简介:张雪(1984-),女,辽宁大连人,硕士,兽医师,研究方向:生物工程,E-mail:zhangxue2624@163.com
  • 基金资助:

    十二五国家科技支撑计划"外来与新发动物疫病筛查与鉴定技术研究与示范"(2013BAD12B01)

Prokaryotic Expression and Immunogenicity Analysis of N Protein from Vesicular Stomatitis Virus

ZHANG Xue1, LOU Li2, CHEN Yang1, ZHOU Xiao-li1, LIU Zhao1, JIA Yun1, SUN Ying-jie3   

  1. 1. Liaoning Entry-exit Inspection and Quarantine Bureau, Dalian 116001, China;
    2. Dandong Entry-exit Inspection and Quarantine Bureau, Dandong 118000, China;
    3. Sichuan Entry-exit Inspection and Quarantine Bureau, Chengdu 610000, China
  • Received:2017-02-27 Online:2017-09-20 Published:2017-09-22

摘要:

本研究旨在克隆和表达水泡性口炎病毒(vesicular stomatitis virus,VSV)特异性抗原N蛋白,进而纯化并分析其免疫原性。根据GenBank中已发表的VSV基因组N基因序列,分别合成VSV两种不同血清型的N基因,经序列对比分析后,设计合成1对特异性引物,PCR扩增获得约1 300 bp的N基因片段,将目的片段亚克隆至pCold Ⅰ原核表达载体中,经IPTG诱导表达后,采用Ni-NTA树脂亲和层析法纯化重组N蛋白。SDS-PAGE分析表明,N基因在大肠杆菌中得到表达,蛋白大小约为50 ku;Western blotting检测结果表明,该重组蛋白与VSV多克隆抗体发生特异性反应。本试验成功构建了VSV-IND和VSV-NJ的原核表达载体,实现了N蛋白在大肠杆菌中的可溶性表达,纯化后的重组蛋白具有良好的免疫原性。

关键词: 水泡性口炎病毒(VSV); N蛋白; 原核表达

Abstract:

This study was aimed to clone and express the specific antigen nucleoprotein (N) of vesicular stomatitis virus (VSV), and then purify and analyze its immunogenicity. Based on published VSV genome N gene sequence in GenBank, two kinds of N genes of VSV with different serotypes were synthesized, respectively. After sequence analysis, one pair of specific primers was designed and synthesized, N gene fragment with about 1 300 bp length was amplified by PCR, and subcloned into pCold Ⅰ expression vector. The recombinant N protein was induced with IPTG and purified by Ni-NTA. The results of SDS-PAGE showed that the N gene was successfully expressed in E. coli and the molecular weight of protein was 50 ku; The results of Western blotting showed that this recombined protein specifically reacted with polyclonal antibody serum of VSV. The recombinant vector with VSV-IND and VSV-NJ were successfully constructed, and the N protein was solubly expressed in E. coli, and the purified protein demonstrated promising immunogenicity.

Key words: vesicular stomatitis virus (VSV); N protein; prokaryotic expression

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