title: The immunobiology of the T cell response to Mls-locus-disparate stimulator cells. I. Unidirectionality, new strain combinations, and the role of Ia antigens.
abstract: The primary mixed lymphocyte reaction of T cells to Mls-locus-disparate stimulator cells differs from that to non-self Ia antigens in several respects. In the present experiments, the unidirectional nature of this response is shown in several strain combinations, including the newly detected Mlsa and Mlsa-like alleles expressed by strains PL/J, RF/J, and SM/J. All of these strains stimulate MHC-identical T cells strongly. In addition, they stimulate a variety of cloned T cell lines specific for Mlsa,d, which can thus be shown to respond to Mlsa,d stimulators of the H-2b,d,k,u, and v haplotypes. Although these results suggest that primary T cell responses to Mlsa,d are unlikely to be MHC restricted, these primary responses are readily inhibited by monoclonal antibodies specific for the I-A and especially the I-E products borne by the stimulator cells, as well as by monoclonal antibodies specific for L3T4a on the responding T cells. This effect of anti-Ia antibodies is not overcome by exogenous interleukin 1. Thus, I-A and especially I-E molecules are centrally involved in the unidirectional primary T cell response to the potently stimulating Mlsa and Mlsd alleles expressed by cells of several different MHC haplotypes.
authors.forename: C A
authors.initials: CA
authors.lastname: Janeway
authors.forename: M E
authors.initials: ME
authors.lastname: Katz
mesh_terms: D000818:Animals; D000911:Antibodies, Monoclonal / Q000502:physiology; D001667:Binding, Competitive; D002999:Clone Cells / Q000276:immunology; D003433:Crosses, Genetic; D000939:Epitopes / Q000276:immunology; D005802:Genes, MHC Class II; D006183:H-2 Antigens / Q000235:genetics / Q000276:immunology; D006649:Histocompatibility Antigens / Q000235:genetics / Q000276:immunology; D000949:Histocompatibility Antigens Class II / Q000235:genetics* / Q000276:immunology; D007375:Interleukin-1 / Q000502:physiology; D008213:Lymphocyte Activation; D007959:Lymphocyte Culture Test, Mixed; D051379:Mice; D008806:Mice, Inbred AKR; D008807:Mice, Inbred BALB C; D008808:Mice, Inbred CBA; D008811:Mice, Inbred DBA; D013154:Spleen / Q000166:cytology; D013601:T-Lymphocytes / Q000276:immunology*
chemical_list: D000911:Antibodies, Monoclonal; D000939:Epitopes; D006183:H-2 Antigens; D006649:Histocompatibility Antigens; D000949:Histocompatibility Antigens Class II; C024138:I-E-antigen; D007375:Interleukin-1