| Literature DB >> 19647814 |
Shigefumi Okamoto1, Masaaki Matsuura, Takami Akagi, Mitsuru Akashi, Takeshi Tanimoto, Toyokazu Ishikawa, Michiaki Takahashi, Koichi Yamanishi, Yasuko Mori.
Abstract
Adding poly(gamma-glutamic acid) nano-particles (gamma-PGA-NPs), a safe, natural material, to subcutaneous immunization with influenza virus hemagglutinin (HA) vaccine increases the protective immune responses against influenza virus in mice. Here, we examined whether intranasal administration of the HA vaccine with gamma-PGA-NPs would induce protection from influenza virus challenge in mice. Intranasal immunization with the mixture of gamma-PGA-NPs and HA vaccine from an influenza virus strain A/PR/8/34 (H1N1) or A/New Caledonia/20/99 (H1N1) enhanced protection of mice from A/PR/8/34 infection. Intranasal immunization with A/New Caledonia/20/99 HA vaccine and gamma-PGA-NPs induced cell-mediated immune responses and neutralizing antibody production for both A/New Caledonia/20/99 and A/PR/8/34. These data suggest that gamma-PGA-NPs may have potential for clinical applications as a mucosal adjuvant.Entities:
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Year: 2009 PMID： 19647814 DOI： 10.1016/j.vaccine.2009.07.037
Source DB: PubMed Journal: Vaccine ISSN： 0264-410X Impact factor: 3.641