title: Differential expression of HLA-DR allospecificities on antigen specific T cell clones.
abstract: Serological and immunochemical analysis of T cell clones generated from an HLA-DR3, DR7 donor detected a lower expression of HLA-DR3 than of HLA-DR7 antigen. The defect in the expression of HLA-DR3 antigen appears to reflect abnormalities in regulatory mechanism(s), since the cell surface expression of this antigen could be increased by infecting T cell clones with human T lymphotropic virus I. This finding was paralleled by an increase in the level of mRNA encoded by the HLA-DR beta gene.
mesh_terms: D000911:Antibodies, Monoclonal / Q000276:immunology; D001402:B-Lymphocytes / Q000276:immunology; D002460:Cell Line; D017977:Deltaretrovirus / Q000502:physiology; D000939:Epitopes / Q000276:immunology*; D005786:Gene Expression Regulation; D006681:HLA-D Antigens / Q000032:analysis*; D006684:HLA-DR Antigens / Q000032:analysis* / Q000235:genetics; D015803:HLA-DR3 Antigen; D015809:HLA-DR7 Antigen; D006801:Humans; D007371:Interferon-gamma / Q000494:pharmacology; D010446:Peptide Fragments / Q000235:genetics; D012333:RNA, Messenger / Q000096:biosynthesis; D011948:Receptors, Antigen, T-Cell / Q000235:genetics; D016693:Receptors, Antigen, T-Cell, alpha-beta; D011994:Recombinant Proteins / Q000494:pharmacology; D013601:T-Lymphocytes / Q000187:drug effects / Q000276:immunology*
chemical_list: D000911:Antibodies, Monoclonal; D000939:Epitopes; D006681:HLA-D Antigens; D006684:HLA-DR Antigens; D015803:HLA-DR3 Antigen; D015809:HLA-DR7 Antigen; D010446:Peptide Fragments; D012333:RNA, Messenger; D011948:Receptors, Antigen, T-Cell; D016693:Receptors, Antigen, T-Cell, alpha-beta; D011994:Recombinant Proteins; D007371:Interferon-gamma