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非洲猪瘟病毒p72表位的鉴定及初步应用

Identification of p72 epitopes of African swine fever virus and preliminary application.

作者信息

Miao Chun, Yang Sicheng, Shao Junjun, Zhou Guangqing, Ma Yunyun, Wen Shenghui, Hou Zhuo, Peng Decai, Guo HuiChen, Liu Wei, Chang Huiyun

机构信息

African Swine Fever Regional Laboratory of China (Lanzhou), State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, Gansu, China.

Animal Science and Technology College, Guangxi University, Nanning, Guangxi, China.

出版信息

Front Microbiol. 2023 Feb 3;14:1126794. doi: 10.3389/fmicb.2023.1126794. eCollection 2023.

DOI:10.3389/fmicb.2023.1126794
PMID:36819042
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9935695/
Abstract

African swine fever virus (ASFV) causes a highly lethal hemorrhagic viral disease (ASF) of pigs that results in serious losses in China and elsewhere. The development of a vaccine and diagnosis technology for ASFV is essential to prevent and control the spread of ASF. The p72 protein of ASFV is highly immunogenic and reactive, and is a dominant antigen in ASF vaccine and diagnostic research. In this study, 17 p72 monoclonal antibodies (mAbs) were generated. Epitope mapping by a series of overlapping peptides expressed in showed that these mAbs recognized a total of seven (1-7) linear B cell epitopes. These mAbs did not show significant neutralizing activity. Epitopes 1 (HKPHQSKPIL), 2 (PVGFEYENKV), 5 (VNGNSLDEYSS), and 7 (GYKHLVGQEV) are novel. Sequence alignment analysis revealed that the identified epitopes were highly conserved among 27 ASFV strains from nine genotypes. Preliminary screening using known positive and negative sera indicated the diagnostic potential of mAb-2B8D7. The results provide new insights into the antigenic regions of ASFV p72 and will inform the diagnosis of ASFV.

摘要

非洲猪瘟病毒(ASFV)可引发猪的一种高致死性出血性病毒病(ASF),在中国及其他地区造成严重损失。开发针对ASFV的疫苗和诊断技术对于预防和控制ASF的传播至关重要。ASFV的p72蛋白具有高度免疫原性和反应活性,是ASF疫苗和诊断研究中的主要抗原。在本研究中,制备了17种p72单克隆抗体(mAb)。通过在[具体表达系统]中表达的一系列重叠肽进行表位定位,结果表明这些mAb总共识别出7个(1 - 7)线性B细胞表位。这些mAb未表现出显著的中和活性。表位1(HKPHQSKPIL)、表位2(PVGFEYENKV)、表位5(VNGNSLDEYSS)和表位7(GYKHLVGQEV)是新发现的。序列比对分析显示,在来自9个基因型的27株ASFV毒株中,所鉴定出的表位高度保守。使用已知的阳性和阴性血清进行初步筛选,表明mAb - 2B8D7具有诊断潜力。这些结果为ASFV p72的抗原区域提供了新的见解,并将为ASFV的诊断提供参考。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/930c/9935695/9b025ae77f08/fmicb-14-1126794-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/930c/9935695/9a19d443d651/fmicb-14-1126794-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/930c/9935695/9e73e92a3f7f/fmicb-14-1126794-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/930c/9935695/efc8f3b52de8/fmicb-14-1126794-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/930c/9935695/e75c815feb98/fmicb-14-1126794-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/930c/9935695/216f0a041073/fmicb-14-1126794-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/930c/9935695/057f034c0033/fmicb-14-1126794-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/930c/9935695/637b40c6d844/fmicb-14-1126794-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/930c/9935695/0cf07a57d141/fmicb-14-1126794-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/930c/9935695/9b025ae77f08/fmicb-14-1126794-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/930c/9935695/9a19d443d651/fmicb-14-1126794-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/930c/9935695/9e73e92a3f7f/fmicb-14-1126794-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/930c/9935695/efc8f3b52de8/fmicb-14-1126794-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/930c/9935695/e75c815feb98/fmicb-14-1126794-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/930c/9935695/216f0a041073/fmicb-14-1126794-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/930c/9935695/057f034c0033/fmicb-14-1126794-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/930c/9935695/637b40c6d844/fmicb-14-1126794-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/930c/9935695/0cf07a57d141/fmicb-14-1126794-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/930c/9935695/9b025ae77f08/fmicb-14-1126794-g009.jpg

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