Archives of Virology

, Volume 157, Issue 8, pp 1451–1461

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

Authors

  • Xueliang Wang
    • Shanghai Institute of Biological Products
    • Xinhua Hospital affiliated to Shanghai Jiaotong University of Medicine
  • Fen Liu
    • Shanghai Institute of Biological Products
  • Mei Zheng
    • Shanghai Institute of Biological Products
  • Dan Zheng
    • Shanghai Institute of Biological Products
  • Tao Zhang
    • State Key Laboratory of VirologyWuhan Institute of Virology, Chinese Academy of Sciences
  • Yinglei Yi
    • Shanghai Institute of Biological Products
  • Yahong Ding
    • Shanghai Institute of Biological Products
  • Jian Luo
    • Shanghai Institute of Biological Products
  • Chaoyang Dai
    • Shanghai Institute of Biological Products
  • Hanzhong Wang
    • State Key Laboratory of VirologyWuhan Institute of Virology, Chinese Academy of Sciences
  • Bing Sun
    • Institute Pasteur of Shanghai, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences
    • Shanghai Institute of Biological Products
    • State Key Laboratory of VirologyWuhan Institute of Virology, Chinese Academy of Sciences
    • College of Life Sciences, Hunan Normal University
Original Article

DOI: 10.1007/s00705-012-1318-7

Cite this article as:
Wang, X., Zhang, W., Liu, F. et al. Arch Virol (2012) 157: 1451. doi:10.1007/s00705-012-1318-7

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.

Copyright information

© Springer-Verlag 2012