Budget Amount *help |
¥18,590,000 (Direct Cost: ¥14,300,000、Indirect Cost: ¥4,290,000)
Fiscal Year 2011: ¥5,980,000 (Direct Cost: ¥4,600,000、Indirect Cost: ¥1,380,000)
Fiscal Year 2010: ¥5,980,000 (Direct Cost: ¥4,600,000、Indirect Cost: ¥1,380,000)
Fiscal Year 2009: ¥6,630,000 (Direct Cost: ¥5,100,000、Indirect Cost: ¥1,530,000)
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Research Abstract |
Currently used parenteral influenza vaccines induce serum IgG antibody response against hemagglutinin (HA), but do not protect primary infection in the respiratory tissues. In addition, vaccine-induced antibodies are not cross-reactive to viruses with different HA subtypes from that of vaccine strains. In this study, we found that intranasal immunization of mice with inactivated influenza viruses induced antibodies cross-reactive to multiple HA subtypes. Furthermore, it was suggested that IgA antibodies associated with mucosal immunity played an important role in heterosubtypic inhibition of virus replication.
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