《中国畜牧兽医》 ›› 2016, Vol. 43 ›› Issue (12): 3149-3155.doi: 10.16431/j.cnki.1671-7236.2016.12.010

• 生物技术 • 上一篇    下一篇

新型鸭呼肠孤病毒σB蛋白的原核表达及其多克隆抗体制备

梅敏敏, 梁国智, 黄雯晶, 李晓文, 黄淑坚   

  1. 佛山科学技术学院生命科学学院, 佛山 528231
  • 收稿日期:2016-05-23 出版日期:2016-12-20 发布日期:2016-12-22
  • 通讯作者: 黄淑坚 E-mail:sjhuang.foshan@163.com
  • 作者简介:梅敏敏(1993-),女,湖南郴州人,硕士,研究方向:禽传染病学,E-mail:15899840301@163.com
  • 基金资助:

    广东省家禽重大传染病控制技术研究(2012A020100001)

Prokaryotic Expression and Polyclonal Antibody Preparation of σB Protein of New-type Duck Reovirus

MEI Min-min, LIANG Guo-zhi, HUANG Wen-jing, LI Xiao-wen, HUANG Shu-jian   

  1. College of Life Science, Foshan University, Foshan 528231, China
  • Received:2016-05-23 Online:2016-12-20 Published:2016-12-22

摘要:

为制备新型鸭呼肠孤病毒(new-type duck reovirus,NDRV)XX株σB蛋白的多克隆抗体,试验经RT-PCR扩增NDRV XX株σB基因编码序列,构建原核表达质粒pET-32a(+)-σB,将其转化至大肠杆菌BL21(DE3)感受态细胞后,经IPTG诱导获得His-σB重组蛋白。SDS-PAGE显示成功表达出约55 ku的融合蛋白,主要以包涵体形式存在,其表达时的最佳诱导时间、IPTG诱导浓度分别为3 h和0.25 mmol/L。经Ni2+柱亲和层析纯化获得可溶性重组蛋白,将蛋白经Western blotting和蛋白质谱鉴定为高纯度的σB重组蛋白,将纯化后σB重组蛋白按合理免疫程序免疫家兔,获得多抗隆抗体经Western blotting分析显示出特异性的反应。本试验结果为NDRV σB蛋白功能的深入研究及基因工程疫苗的研发奠定了基础。

关键词: 新型鸭呼肠孤病毒; σB蛋白; 原核表达; 多克隆抗体

Abstract:

To prepare polyclonal antibodies against σB protein of new-type duck reovirus (NDRV) XX strain, the encoding sequence of σB gene of NDRV XX strain was amplified by RT-PCR and successfully inserted to expression plasmid pET-32a(+), and transformed in Escherichia coli BL21(DE3). The His-σB recombinant protein was achieved with IPTG induction. SDS-PAGE result showed that the molecular weight of the expression on fusion protein was about 55 ku, was major insoluble fractions. IPTG induced time and concentration were 3 h and 0.25 mmol/L, respectively. The soluble σB recombinant protein was highly purified which was purified using Ni2+ affinity chromatography and verified by Western blotting and protein mass spectrometry. Then the polyclonal antibodies could be obtained from the rabbits which had immunized by the purified σB recombinant protein with the reasonable procedure. The Western blotting result showed that they had the specific reaction. The results built a foundation of the further study of the NDRV σB protein function and the research of genetic engineering vaccine.

Key words: new-type duck reovirus; σB protein; prokaryotic expression; polyclonal antibody

中图分类号: