Influenza type A virus M protein expression on infected cells is responsible for cross-reactive recognition by cytotoxic thymus-derived lymphocytes

Carol Reiss, J. L. Schulman

Research output: Contribution to journalArticle

Abstract

M protein of influenza A virus was detected with rabbit antiserum by both indirect immunofluorescence and by antibody plus complement-mediated cytolysis on the cell surfaces of both productively and nonproductively infected cells. In contrast, antiserum to nucleoprotein failed to react with unfixed infected cells, but did bind to fixed infected cells, especially in the perinuclear area. Incorporation of antiserum to M protein in a T-cell-mediated cytotoxicity assay produced almost complete abrogation of lysis of H-2-compatible cells infected with an influenza A virus of a subtype which differed from that used to elicit the cytotoxic T cells. However, the antibody did not significantly block 51Cr release from cells infected with the homotypic type A influenza virus. These observations are in accord with the hypothesis that the cross-reactive cytotoxic T-cell responses seen with cells infected by heterotypic influenza A viruses are due to recognition of a common M protein.

Original languageEnglish (US)
Pages (from-to)719-723
Number of pages5
JournalInfection and Immunity
Volume29
Issue number2
StatePublished - 1980

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Influenza A virus
Thymus Gland
Lymphocytes
Immune Sera
T-Lymphocytes
Proteins
Nucleoproteins
Antibodies
Indirect Fluorescent Antibody Technique
influenza virus M-protein
Rabbits

ASJC Scopus subject areas

  • Immunology

Cite this

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abstract = "M protein of influenza A virus was detected with rabbit antiserum by both indirect immunofluorescence and by antibody plus complement-mediated cytolysis on the cell surfaces of both productively and nonproductively infected cells. In contrast, antiserum to nucleoprotein failed to react with unfixed infected cells, but did bind to fixed infected cells, especially in the perinuclear area. Incorporation of antiserum to M protein in a T-cell-mediated cytotoxicity assay produced almost complete abrogation of lysis of H-2-compatible cells infected with an influenza A virus of a subtype which differed from that used to elicit the cytotoxic T cells. However, the antibody did not significantly block 51Cr release from cells infected with the homotypic type A influenza virus. These observations are in accord with the hypothesis that the cross-reactive cytotoxic T-cell responses seen with cells infected by heterotypic influenza A viruses are due to recognition of a common M protein.",
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