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A common neutralizing epitope conserved between the hemagglutinins of influenza A virus H1 and H2 strains

Identifieur interne : 001F22 ( Main/Exploration ); précédent : 001F21; suivant : 001F23

A common neutralizing epitope conserved between the hemagglutinins of influenza A virus H1 and H2 strains

Auteurs : Y. Okuno [Japon] ; Y. Isegawa ; F. Sasao ; S. Ueda

Source :

RBID : Pascal:93-0479202

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English descriptors

Abstract

When mice were immunized with the A/Okuda/57 (H2N2) strain of influenza virus, a unique monoclonal antibody designated C179 was obtained. Although C179 was confirmed to recognize the hemagglutinin (HA) glycoprotein by immunoprecipitation assays, it did not show hemagglutination inhibition activity to any of the strains of the three subtypes of influenza A virus. However, it neutralized all of the H1 and H2 strains but not the H3 strains. Moreover, it inhibited polykaryon formation induced by the H1 and H2 strains but not by the H3 strains. Two antigenic variants against C179 were obtained, and nucleotide sequence analysis revealed that amino acid sequences, from 318 to 322 of HA, and from 47 to 58 of HA2, conserved among H1 and H2 strains were responsible for the recognition of C179

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Le document en format XML

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<front>
<div type="abstract" xml:lang="en">When mice were immunized with the A/Okuda/57 (H2N2) strain of influenza virus, a unique monoclonal antibody designated C179 was obtained. Although C179 was confirmed to recognize the hemagglutinin (HA) glycoprotein by immunoprecipitation assays, it did not show hemagglutination inhibition activity to any of the strains of the three subtypes of influenza A virus. However, it neutralized all of the H1 and H2 strains but not the H3 strains. Moreover, it inhibited polykaryon formation induced by the H1 and H2 strains but not by the H3 strains. Two antigenic variants against C179 were obtained, and nucleotide sequence analysis revealed that amino acid sequences, from 318 to 322 of HA, and from 47 to 58 of HA
<sub>2</sub>
, conserved among H1 and H2 strains were responsible for the recognition of C179</div>
</front>
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<name sortKey="Sasao, F" sort="Sasao, F" uniqKey="Sasao F" first="F." last="Sasao">F. Sasao</name>
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