Mapping of epitopes of VP2 protein of chicken anemia virus using monoclonal antibodies

文献类型: 外文期刊

第一作者: Wang, Xiaoyan

作者: Wang, Xiaoyan;Gao, Honglei;Gao, Yulong;Fu, Chaoyang;Wang, Zhi;Lu, Guili;Cheng, Yu;Wang, Xiaomei

作者机构:

关键词: chicken anemia virus;VP2;epitope mapping;monoclonal antibody

期刊名称:JOURNAL OF VIROLOGICAL METHODS ( 影响因子:2.014; 五年影响因子:2.001 )

ISSN: 0166-0934

年卷期: 2007 年 143 卷 2 期

页码:

收录情况: SCI

摘要: To map the epitopes of VP2 protein of chicken anemia virus (CAV), VP2 was expressed as a fusion protein in Escherichia coli BL21 (DE3). The Western blot demonstrated that recombinant VP2 protein could be recognized by sera of chickens infected with CAV. Female BALB/c mice were immunized with purified recombinant VP2 produced in E. coli BL21 (DE3) and seven VP2-specific monoclonal antibodies (MAbs) were developed. The results of Western blot showed that all the seven MAbs recognized the recombinant VP2 protein expressed in the baculovirus and reacted with MDCC-MSB1 cells infected with CAV by indirect immunofluorescence assay. The VP2 protein was dissected into 21 overlapping fragments, expressed as fusion peptides in E. coli and used for epitope mapping by pepscan analysis. ELISA and Western blot assays indicated that most of MAbs reacted with the 12th and 13th fragments (amino acids 111-136) and one of them reacted with the 3rd fragment (amino acids 21-36). The linear immunodominant epitope of VP2 was located mainly in amino acid residues 111-126 and 121-136. (C) 2007 Elsevier B.V. All rights reserved.

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