食品科学

• 生物工程 • 上一篇    下一篇

诺如病毒衣壳蛋白多克隆抗体的制备及效价分析

武 娟,赵玉然,唐庆娟,王静凤,王玉明,李兆杰,薛 勇,薛长湖   

  1. 1.中国海洋大学食品科学与工程学院,食品科学与人类健康实验室,山东 青岛 266003;
    2.山东省出入境检验检疫局食品与农产品检测机构,山东 青岛 266003
  • 出版日期:2014-06-15 发布日期:2014-07-03

Preparation and Titer Analysis of Polyclonal Antibody against Norovirus Capsid Protein

WU Juan, ZHAO Yu-ran, TANG Qing-juan, WANG Jing-feng, WANG Yu-ming, LI Zhao-jie, XUE Yong, XUE Chang-hu   

  1. 1. Laboratory of Food Science and Human Health, College of Food Science and Engineering, Ocean University of China, Qingdao 266003, China; 2. Food and Agricultural Products Testing Agency (FATA), Shandong Entry-Exit Inspection and Quarantine Bureau, Qingdao 266003, China
  • Online:2014-06-15 Published:2014-07-03

摘要:

将大肠杆菌表达的GII-4型诺如病毒(Norovirus,NV)衣壳蛋白免疫新西兰大白兔,制备多克隆抗体;收集抗血清,酶联免疫吸附测定法(enzyme-linked immunosorbent assay,ELISA)检测其效价,并对经聚合酶链式反应法(polymerase chain reaction,PCR)验证为阳性的NV感染样品进行检测,比较两种检测方法的差异性。以原核表达的诺如病毒衣壳蛋白作为抗原制备的NV特异性多克隆抗体具有良好的免疫反应性,抗体效价为1∶10 000,可以用于免疫学检测。

关键词: 诺如病毒, 衣壳蛋白, 原核表达, 抗血清

Abstract:

New Zealand rabbits were immunized with the recombinant norovirus (NV) capsid protein expressed in E. coli
to prepare polyclonal antibody. The antiserum was collected and evaluated by ELISA method, and a comparative evaluation
with PCR was carried out by using both methods to detect NV-positive samples identified by PCR. The antiserum had a
good immunoreactivity at a dilution of 1:10 000, suggesting its availability for immunological experiments. Compared with
PCR, the ELISA method was more simple and rapid. Although the sensitivity of ELISA was worse than that of PCR, this
problem was able to be meliorated by purified virus. This study establishes the basis for a rapid and economical norovirus
enzyme-linked immunosorbent assay kit.

Key words: norovirus, capsid protein, prokaryotic expression system, polyclonal antibody