Immunogenicity of a synthetic peptide corresponding to a portion of the heavy chain of H3N2 influenza virus haemagglutinin.
Rabbits were immunized with a synthetic octadecapeptide corresponding to the sequence ser-91 to leu-108 of the haemagglutinin heavy chain of H3N2 influenza A viruses. They developed antibodies reactive in solid-phase radioimmunoassay (SPRIA) with the peptide and with haemagglutinins of various H3N2 viruses but not of heterotypic H1N1 and H2N2 viruses. The antibodies were also non-reactive in the haemagglutination-inhibition or neutralization test. Influenza H3N2 virus replicated in the lungs of mice immunized with the peptide to the same extent as in the control mice. Of 27 human sera possessing anti-H3N2 activity or seven sera from rabbits immunized with either virions or haemagglutinins of various influenza A viruses, none was reactive with the peptide in SPRIA.
D000936:Antigen-Antibody Complex; D019267:Hemagglutinin Glycoproteins, Influenza Virus; D006389:Hemagglutinins, Viral / Q000276:immunology; D053122:Influenza A Virus, H3N2 Subtype; D009980:Influenza A virus / Q000276:immunology*; D046911:Macromolecular Substances; D010455:Peptides / Q000276:immunology*; D011863:Radioimmunoassay
D000936:Antigen-Antibody Complex; D019267:Hemagglutinin Glycoproteins, Influenza Virus; D006389:Hemagglutinins, Viral; D046911:Macromolecular Substances; D010455:Peptides