title: Cytotoxic T cell recognition of the influenza nucleoprotein and hemagglutinin expressed in transfected mouse L cells.
abstract: L cells expressing either the A/NT/60/68 nucleoprotein or the A/PR/8/34 (H1) hemagglutinin by DNA mediated gene transfer were used to investigate recognition by influenza A specific cytotoxic T lymphocytes (CTL). A subpopulation of CTL that recognized the H1 hemagglutinin was detected in mice primed with either A/PR/8/34 (H1N1) or A/JAP/305/57 (H2N2) influenza viruses. However, neither CTL from mice primed with A/NT/60/68 (H3N2) nor the recombinant virus X31 (H3N2) showed any activity on L cells expressing H1. These results showed that the majority of fully crossreactive CTL do not recognize the hemagglutinin molecule. A comparison between nucleoprotein and hemagglutinin transfected L cells reveals the nucleoprotein as the major target for CTL that are crossreactive on the three pandemic strains of human influenza A virus.
mesh_terms: D000818:Animals; D002478:Cells, Cultured; D004247:DNA / Q000378:metabolism; D004262:DNA Restriction Enzymes; D005260:Female; D007124:Immunoenzyme Techniques; D009980:Influenza A virus / Q000235:genetics / Q000276:immunology*; D007739:L Cells / Q000276:immunology / Q000378:metabolism; D051379:Mice; D008815:Mice, Inbred Strains; D010957:Plasmids; D013539:Simian virus 40 / Q000235:genetics; D013602:T-Lymphocytes, Cytotoxic / Q000276:immunology*; D014158:Transcription, Genetic; D014162:Transfection; D014759:Viral Envelope Proteins / Q000235:genetics*; D014763:Viral Matrix Proteins; D014764:Viral Proteins / Q000235:genetics*
chemical_list: C031540:M-protein, influenza virus; D014759:Viral Envelope Proteins; D014763:Viral Matrix Proteins; D014764:Viral Proteins; D004247:DNA; D004262:DNA Restriction Enzymes