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Protection of mice against influenza A virus challenge by vaccination with baculovirus-expressed M2 protein

Identifieur interne : 001D02 ( Main/Exploration ); précédent : 001D01; suivant : 001D03

Protection of mice against influenza A virus challenge by vaccination with baculovirus-expressed M2 protein

Auteurs : Vladimir A. Slepushkin [États-Unis] ; Jacqueline M. Katz [États-Unis] ; Renee A. Black [États-Unis] ; William C. Gamble [États-Unis] ; Paul A. Rota [États-Unis, Russie] ; Nancy J. Cox [États-Unis]

Source :

RBID : ISTEX:0585156783CE56219023EC793EDA57CD8BBF1A4A

English descriptors

Abstract

Abstract: We have investigated the potential of the conserved transmembrane M2 protein of influenza A/Ann Arbor/6/60 virus, expressed by a baculovirus recombinant, to induce protective immunity in BALB c mice. Vaccination of mice with shortened the duration of virus shedding and protected mice from a lethal infection with A/Ann Arbor/6/60 virus but not B/Ann Arbor/1/55 virus, suggesting that the protection was mediated by an M2-specific mechanism. Serum antibodies were detected which reacted with synthetic peptides defining three antigenic determinants located on both the external N- and internal C-termini of the M2 protein. Furthermore, vaccination with M2 protected mice from death following a lethal challenge with the heterologous A/Hong Kong/68 (H3N2) virus. These results demonstrate the potential to elicit heterosubtypic immunity to type A influenza viruses through vaccination with a conserved transmembrane protein.

Url:
DOI: 10.1016/0264-410X(95)92777-Y


Affiliations:


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<div type="abstract" xml:lang="en">Abstract: We have investigated the potential of the conserved transmembrane M2 protein of influenza A/Ann Arbor/6/60 virus, expressed by a baculovirus recombinant, to induce protective immunity in BALB c mice. Vaccination of mice with shortened the duration of virus shedding and protected mice from a lethal infection with A/Ann Arbor/6/60 virus but not B/Ann Arbor/1/55 virus, suggesting that the protection was mediated by an M2-specific mechanism. Serum antibodies were detected which reacted with synthetic peptides defining three antigenic determinants located on both the external N- and internal C-termini of the M2 protein. Furthermore, vaccination with M2 protected mice from death following a lethal challenge with the heterologous A/Hong Kong/68 (H3N2) virus. These results demonstrate the potential to elicit heterosubtypic immunity to type A influenza viruses through vaccination with a conserved transmembrane protein.</div>
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