title: Monoclonal antibodies specific for H-2K and H-2D antigens on cytotoxic T cells can inhibit their function.
abstract: Antibodies specific for murine major histocompatibility gene complex (MHC) class I H-2K and H-2D molecules present on cytotoxic T (Tc) cells have been shown to inhibit their function of target cell lysis. This could only be demonstrated by using a more sensitive assay for T-cell-mediated lysis, and many monoclonal antibodies of different Ig class, origin, and specificity can be shown to inhibit alloreactive as well as MHC-restricted Tc cells. These antibodies inhibit different activated T-cell populations to varying extents, and anti-H-2K but not anti-H-2D antibodies show a synergistic effect with anti-Lyt-2 antibodies. Data here suggest that MHC molecules may be located in or near the T-cell receptor complex on these cells.
mesh_terms: D000818:Animals; D000911:Antibodies, Monoclonal / Q000276:immunology; D000936:Antigen-Antibody Complex; D002462:Cell Membrane / Q000648:ultrastructure; D002478:Cells, Cultured; D003602:Cytotoxicity, Immunologic; D004480:Ectromelia / Q000276:immunology; D006183:H-2 Antigens / Q000276:immunology*; D051379:Mice; D010222:Parainfluenza Virus 1, Human / Q000276:immunology; D011948:Receptors, Antigen, T-Cell / Q000276:immunology*; D013602:T-Lymphocytes, Cytotoxic / Q000276:immunology* / Q000648:ultrastructure
chemical_list: D000911:Antibodies, Monoclonal; D000936:Antigen-Antibody Complex; D006183:H-2 Antigens; D011948:Receptors, Antigen, T-Cell