Development and Preliminary Application of an Indirect ELISA to Detect Infectious Bovine Rhinotracheitis Virus Using Recombinant Glycoprotein D of IBRV Strain SD
文献类型: 外文期刊
第一作者: Song, Lingling
作者: Song, Lingling;Zhang, Hui;Hou, Peili;Wang, Hongmei;Zhao, Guimin;He, Hongbin;Xia, Xianzhu
作者机构:
关键词: gD;Indirect ELISA;Infectious bovine rhinotracheitis virus;Serology
期刊名称:KAFKAS UNIVERSITESI VETERINER FAKULTESI DERGISI ( 影响因子:0.685; 五年影响因子:0.655 )
ISSN: 1300-6045
年卷期: 2016 年 22 卷 4 期
页码:
收录情况: SCI
摘要: Glycoprotein D (gD) is the major structural protein of infectious bovine rhinotracheitis virus (IBRV). It can induce both humoral and cellular immunity thus it is a preferable protein for IBR diagnostic reagent. Regarding to DNAstar analysis, the major antigenic region of the gD fragment was amplified by PCR using the IBRV genomic DNA as a template, and subsequenly constructed into the recombinant plasmid pET32a-gD. The fusion protein was expressed upon IPTG induction. The fusion protein was purified by immobilized Ni ion affinity chromatography with a Ni-NTA Kit after verification by SDS-PAGE and Western-blotting analysis, then was utilized as a coating antigen to detect antibodies to infectious bovine rhinotracheitis virus (IBRV) in an indirect ELISA method. Cross-reactivity examinations have showed that the recombinant antigen had no cross reaction with positive sera of other common viral diseases (bovine ephemeral fever, bovine viral diarrhea-mucosal disease, calf diarrhea, bovine intestinal virus infection, bovine coronavirus disease) which indicating a strong specificity. Application of this diagnostic method in 1315 clinical serum samples displayed an antibody positive rate of 23.7% (311/1315), with respect to a coincidence rate of 96.8% as compared to a commercialized IBRV whole virus ELISA. Our method is stable and sensitive hence provides a quick and convenient serological diagnosis favoring epidemiology and disease identification of domestic IBR.
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