Immunogenicity and Protective Efficacy of Replication-Incompetent Influenza Virus-Like Particles
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概要
- 論文の詳細を見る
Despite the success of influenza virus vaccines in reducing severe illness, their efficacy is suboptimal. We describe here the immunogenicity and protective capacity of replication-incompetent influenza virus-like particles (VLPs) which were generated entirely from cDNAs and lacked either the entire NS gene (encoding both the NS1 and NS2 protein) or only the NS2 gene. In mammalian cells infected with NS gene-deficient VLPs, the nucleoprotein, but not other viral proteins including hemagglutinin (HA) and neuraminidase (NA), was detected. In contrast, cells infected with VLPs expressing NS1 but not NS2 (NS2 knockout) expressed multiple viral proteins, including HA and NA. When challenged with lethal doses of an antigenically homologous mouse-adapted influenza virus, 94% of mice vaccinated with the NS2-knockout VLPs survived, compared with less than 10% of those given the NS-deficient VLPs. These results demonstrate the potential of replication-incompetent NS2-knockout VLPs as novel influenza vaccines and perhaps also as vectors to express genes from entirely unrelated pathogens.
- American Society for Microbiologyの論文
著者
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KIDA Hiroshi
Department of Disease Control, Graduate School of Veterinary Medicine, Hokkaido University
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Kawaoka Y
St. Jude Children's Res. Hospital Tennessee Usa
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Kida Hiroshi
東京大 海洋研 大槌臨海研究セ
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Kida Hiroshi
Hokkaido Univ. Hokkaido Jpn
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Kida Hiroshi
Department Of Disease Control Graduate School Of Veterinary Medicine Hokkkaido University
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Kida Hiroshi
Laboratory Of Microbiology Department Of Disease Control Graduate School Of Veterinary Medicine Hokk
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Kida Hiroshi
Department Of Disease Control Graduate School Of Veterinary Medicine Hokkaido University
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