Characterization of SJL T cell clones responsive to syngeneic lymphoma (RCS): RCS-specific clones are stimulated by activated B cells.
To gain insight into the nature of the syngeneic T cell-stimulating molecules on SJL lymphoma cells (RCS), a panel of eight Ly-1+2- T cell clones that are specific for transplantable RCS has been generated. All of these clones proliferate vigorously in response to two independent RCS lines and to LPS-activated syngeneic or F1 B cell blasts, but not to unstimulated SJL spleen cells or to allogeneic B cell blasts. Only one RCS-specific clone displays a proliferative response to (SJL X BALB/c) resting spleen cells, suggesting that I-E molecules are not the source of stimulation of RCS-responsive cells. Responses of the T cell clones to both RCS and syngeneic LPS-activated B cells are inhibited by monoclonal antibodies to I-A antigens, and not by antibody to I-E antigens. These findings suggest that RCS-responsive T cells are stimulated either by syngeneic I-As alone, in a form expressed on activated B cells, or by I-As in combination with X, where X is a cell surface antigen present on B cells at certain stages of differentiation.
DeKruyff
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Brown
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Thorbecke
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Ponzio
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D000818:Animals; D000951:Antigens, Neoplasm / Q000276:immunology; D001402:B-Lymphocytes / Q000276:immunology*; D002460:Cell Line; D002999:Clone Cells / Q000276:immunology; D003429:Cross Reactions; D000939:Epitopes / Q000276:immunology; D005260:Female; D006649:Histocompatibility Antigens / Q000276:immunology; D000949:Histocompatibility Antigens Class II; D008213:Lymphocyte Activation; D016403:Lymphoma, Large B-Cell, Diffuse / Q000235:genetics / Q000276:immunology*; D051379:Mice; D008807:Mice, Inbred BALB C; D008810:Mice, Inbred C57BL; D009368:Neoplasm Transplantation; D013601:T-Lymphocytes / Q000276:immunology*
D000951:Antigens, Neoplasm; D000939:Epitopes; D006649:Histocompatibility Antigens; D000949:Histocompatibility Antigens Class II; C024138:I-E-antigen