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Published in: Archives of Virology 8/2012

01-08-2012 | Original Article

Intranasal immunization with live attenuated influenza vaccine plus chitosan as an adjuvant protects mice against homologous and heterologous virus challenge

Authors: Xueliang Wang, Wenjie Zhang, Fen Liu, Mei Zheng, Dan Zheng, Tao Zhang, Yinglei Yi, Yahong Ding, Jian Luo, Chaoyang Dai, Hanzhong Wang, Bing Sun, Ze Chen

Published in: Archives of Virology | Issue 8/2012

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Abstract

Our previous studies have proven the adjuvanticity of chitosan in mice when administered with inactivated and subunit influenza vaccine. In this study, we investigated the adjuvant effect of chitosan on the immunogenicity and protective efficacy of a live attenuated influenza vaccine. Mice were inoculated intranasally with live attenuated influenza vaccine plus chitosan and then challenged with a high, lethal dose of homologous or heterologous virus. Antibody responses, secretion of IFN-γ by spleen cells, body weight loss, survival rates, and residual lung virus titers were tested. The results demonstrated that live attenuated influenza vaccine with chitosan adjuvant not only protected mice completely against challenge with the homologous virus but also provided good cross-protection against a heterologous virus. In addition, chitosan as adjuvant could significantly increase the levels of antigen-specific antibodies and the population of IFN-γ-secreting T cells. These results reveal the potential of chitosan as a candidate adjuvant for use in a live attenuated influenza vaccine.
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Metadata
Title
Intranasal immunization with live attenuated influenza vaccine plus chitosan as an adjuvant protects mice against homologous and heterologous virus challenge
Authors
Xueliang Wang
Wenjie Zhang
Fen Liu
Mei Zheng
Dan Zheng
Tao Zhang
Yinglei Yi
Yahong Ding
Jian Luo
Chaoyang Dai
Hanzhong Wang
Bing Sun
Ze Chen
Publication date
01-08-2012
Publisher
Springer Vienna
Published in
Archives of Virology / Issue 8/2012
Print ISSN: 0304-8608
Electronic ISSN: 1432-8798
DOI
https://doi.org/10.1007/s00705-012-1318-7

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