title: Measles virus-specific T4+ human cytotoxic T cell clones are restricted by class II HLA antigens.
abstract: We have generated measles virus-specific T cell clones from a patient with multiple sclerosis who has been described previously as a strong responder to measles virus. T cell clones were screened on the basis of their capacity to proliferate to measles virus. The cell surface phenotype of each clone was OKT3+, OKT4+, OKT8-. The majority of these clones (11 of 14) were cytotoxic for their autologous measles virus-infected lymphoblastoid B cell target. This cytotoxicity was specific for measles virus inasmuch as these T cell clones could not lyse influenza or mumps virus-infected B cell targets. By using a panel of HLA-defined measles virus-infected B cell lines, these clones were shown to recognize measles virus in the context of HLA class II determinants. A monoclonal antibody that recognizes HLA class II monomorphic determinants (L243), but not a monoclonal antibody that recognizes HLA class I antigens (W6/32), inhibited the lysis of the autologous measles virus-infected B cell target by these T cell clones. These results demonstrate that these cytotoxic T cell clones specific for measles virus are HLA class II restricted.
mesh_terms: D002999:Clone Cells / Q000276:immunology; D003602:Cytotoxicity, Immunologic; D000939:Epitopes / Q000235:genetics*; D006682:HLA-DP Antigens; D006684:HLA-DR Antigens; D000949:Histocompatibility Antigens Class II / Q000235:genetics*; D006801:Humans; D008459:Measles virus / Q000276:immunology*; D009103:Multiple Sclerosis / Q000276:immunology; D010641:Phenotype; D013602:T-Lymphocytes, Cytotoxic / Q000276:immunology*
chemical_list: D000939:Epitopes; D006682:HLA-DP Antigens; D006684:HLA-DR Antigens; D000949:Histocompatibility Antigens Class II