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Vaccines

Mucosal Immunization with High-Mobility Group Box 1 in Chitosan Enhances DNA Vaccine-Induced Protection against Coxsackievirus B3-Induced Myocarditis

Maowei Wang, Yan Yue, Chunsheng Dong, Xiaoyun Li, Wei Xu, Sidong Xiong
Maowei Wang
Jiangsu Provincial Key Laboratory of Infection and Immunity, Institutes of Biology and Medical Science, Soochow University, Suzhou, People's Republic of China
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Yan Yue
Jiangsu Provincial Key Laboratory of Infection and Immunity, Institutes of Biology and Medical Science, Soochow University, Suzhou, People's Republic of China
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Chunsheng Dong
Jiangsu Provincial Key Laboratory of Infection and Immunity, Institutes of Biology and Medical Science, Soochow University, Suzhou, People's Republic of China
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Xiaoyun Li
Jiangsu Provincial Key Laboratory of Infection and Immunity, Institutes of Biology and Medical Science, Soochow University, Suzhou, People's Republic of China
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Wei Xu
Jiangsu Provincial Key Laboratory of Infection and Immunity, Institutes of Biology and Medical Science, Soochow University, Suzhou, People's Republic of China
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Sidong Xiong
Jiangsu Provincial Key Laboratory of Infection and Immunity, Institutes of Biology and Medical Science, Soochow University, Suzhou, People's Republic of China
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DOI: 10.1128/CVI.00466-13
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ABSTRACT

Coxsackievirus B3 (CVB3), a small single-stranded RNA virus, belongs to the Picornaviridae family. Its infection is the most common cause of myocarditis, with no vaccine available. Gastrointestinal mucosa is the major entry port for CVB3; therefore, the induction of local immunity in mucosal tissues may help control initial viral infections and alleviate subsequent myocardial injury. Here we evaluated the ability of high-mobility group box 1 (HMGB1) encapsulated in chitosan particles to enhance the mucosal immune responses induced by the CVB3-specific mucosal DNA vaccine chitosan-pVP1. Mice were intranasally coimmunized with 4 doses of chitosan-pHMGB1 and chitosan-pVP1 plasmids, at 2-week intervals, and were challenged with CVB3 4 weeks after the last immunization. Compared with chitosan-pVP1 immunization alone, coimmunization with chitosan-pHMGB1 significantly (P < 0.05) enhanced CVB3-specific fecal secretory IgA levels and promoted mucosal T cell immune responses. In accordance, reduced severity of myocarditis was observed in coimmunized mice, as evidenced by significantly (P < 0.05) reduced viral loads, decreased myocardial injury, and increased survival rates. Flow cytometric analysis indicated that HMGB1 enhanced dendritic cell (DC) recruitment to mesenteric lymph nodes and promoted DC maturation, which might partly account for its mucosal adjuvant effect. This strategy may represent a promising approach to candidate vaccines against CVB3-induced myocarditis.

  • Copyright © 2013, American Society for Microbiology. All Rights Reserved.
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Mucosal Immunization with High-Mobility Group Box 1 in Chitosan Enhances DNA Vaccine-Induced Protection against Coxsackievirus B3-Induced Myocarditis
Maowei Wang, Yan Yue, Chunsheng Dong, Xiaoyun Li, Wei Xu, Sidong Xiong
Clinical and Vaccine Immunology Oct 2013, 20 (11) 1743-1751; DOI: 10.1128/CVI.00466-13

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Mucosal Immunization with High-Mobility Group Box 1 in Chitosan Enhances DNA Vaccine-Induced Protection against Coxsackievirus B3-Induced Myocarditis
Maowei Wang, Yan Yue, Chunsheng Dong, Xiaoyun Li, Wei Xu, Sidong Xiong
Clinical and Vaccine Immunology Oct 2013, 20 (11) 1743-1751; DOI: 10.1128/CVI.00466-13
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