Development and Primary Application of an Indirect ELISA Based on Rep Protein to Analyze Antibodies against Porcine Cocirvirus-like Virus (PCLV)

被引:2
|
作者
Chen, Zheng [1 ,2 ]
Hu, Xifeng [1 ,2 ]
Wu, Xiangdong [1 ,2 ]
Li, Yu [1 ,2 ]
Ding, Zhen [1 ,2 ]
Zeng, Qinghua [1 ,2 ]
Wan, Tong [3 ]
Yin, Jingyi [1 ,2 ]
Wu, Huansheng [1 ,2 ]
机构
[1] Jiangxi Agr Univ, Dept Prevent Vet Med, Coll Anim Sci & Technol, Zhimin St, Nanchang 330045, Jiangxi, Peoples R China
[2] Jiangxi Agr Univ, Coll Anim Sci & Technol, Jiangxi Prov Key Lab Anim Sci & Technol, Nanchang 330045, Jiangxi, Peoples R China
[3] Jiangxi Agr Univ, Coll Engn, Zhimin St, Nanchang 330045, Jiangxi, Peoples R China
来源
VIRUSES-BASEL | 2022年 / 14卷 / 07期
关键词
porcine circovirus-like virus; Rep protein; ELISA; antibody; serum epidemiology; PIGS;
D O I
10.3390/v14071398
中图分类号
Q93 [微生物学];
学科分类号
071005 ; 100705 ;
摘要
Porcine circovirus-like virus (PCLV) is a member of circovirus that contains a single-strand DNA genome, which may be one of the pathogens that causes diarrheal symptoms in pigs. The Rep protein encoded by the genome of PCLV may be responsible for viral genome replication. The development of serological detection methods for PCLV is of great necessity for clinical diagnosis, as well as epidemiological investigations. Therefore, this study attempted to build an indirect enzyme-linked immunosorbent assay (ELISA) to examine antibodies against PCLV based on the His-tagged recombinant Rep protein. Full-length PCLV Rep protein was induced and expressed in E. coli and was purified as an antigen to establish an ELISA detection kit. The purified Rep protein was used to inject into mice to produce specific antibodies. There was no cross-reaction of Rep-based ELISA with antisera against other porcine viruses. The intra-assay and inter-assay coefficient variations (CVs) were 0.644-8.211% and 0.859-7.246%, respectively, indicating good repeatability. The non-cross-reaction with TGEV, PRRSV and PCV2 testing showed high sensitivity and high specificity for this ELISA assay. A total of 1593 serum samples collected from different pig farms in Jiangxi Province were tested for anti-PCLV Rep antibodies, and 284 (17.83%) of the 1593 samples were Rep antibody positive. Altogether, the indirect ELISA detection tool developed in this study could be applied to examine serum of PCLV antibodies with good repeatability, high sensitivity and high specificity. In addition, field sample detection results suggested that the PCLV antibody has a low prevalence in pig populations in Jiangxi Province of China.
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页数:10
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