Development and antigenic characterization of three recombinant proteins with potential for Glasser's disease prevention
文献类型: 外文期刊
第一作者: Li, Miao
作者: Li, Miao;Li, Chunling;Song, Shuai;Kang, Huahua;Yang, Dongxia;Li, Miao;Li, Chunling;Song, Shuai;Kang, Huahua;Yang, Dongxia;Li, Miao;Li, Chunling;Song, Shuai;Kang, Huahua;Yang, Dongxia;Li, Miao;Li, Guoqing
作者机构:
关键词: Haemophilus parasuis;Outer membrane proteins;Immune responses;Protection;Vaccine candidate
期刊名称:VACCINE ( 影响因子:3.641; 五年影响因子:3.816 )
ISSN:
年卷期:
页码:
收录情况: SCI
摘要: Haemophilus parasuis is the causative agent of Glasser's disease, which causes high morbidity and mortality in piglets, leading to severe economic losses. The lack of a commercial vaccine against a broad spectrum of strains has limited the disease control. H. parasuis outer membrane proteins (OMPs) are potentially essential components for vaccine formulation. In this study, seven putative OMPs were selected from the annotated H. parasuis serovar 5 genome; they were predicted by bioinformatics and annotated as potential virulence-related factors. These proteins were cloned, expressed, and purified as His-tagged proteins. Antigenicity of the candidate proteins was assessed using Western blotting with convalescent sera against H. parasuis serovar 5. The immunogenicity of the seven OMPs was assessed in a guinea pig model. Except VacJ, all the other six recombinant proteins elicited a detectable antibody response. Anti sera against four of the selected proteins effectively killed the bacteria in vitro. Three proteins (Omp26, VacJ, and HAP5_0742) were found to confer significant protection against challenge with a lethal dose of H. parasuis in a guinea pig model. The results suggest that these three proteins have a strong potential to be vaccine candidates against Glasser's disease. (C) 2016 Elsevier Ltd. All rights reserved.
分类号: R392
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