title: A mutation in a non-MHC murine cell surface antigen detectable by cytotoxic T lymphocytes.
abstract: During the course of screening new T-H-2 region congenic strains of mice constructed from the C57BL/6 and B6-H-2k strains, a new cell surface polymorphism, designated dtc-1, was identified by cell-mediated lympholysis techniques. The dtc-1 antigen can be found on both Con A- and LPS-stimulated lymphoblasts, peritoneal macrophages, and SV40-transformed mouse embryo fibroblasts. Lysis of dtc-1+ targets by CTL is H-2Dk restricted. All inbred strains tested are dtc-1+, with the exception of the B6-H-2k strain, which is dtc-1-, and several congenic strains directly derived from B6-H-2k. Because B6/Boy and AKR/Boy, the parents of the B6-H-2k strain, are dtc-1+, the dtc-1- phenotype may be the result of mutation in the locus specifying the cell surface molecule that carries this antigen. Segregation analysis of the dtc-1+/dtc-1- polymorphism demonstrated that this locus is not linked to T or H-2. The dtc-1 antigen thus identifies yet another cell surface polymorphism and adds another immunologically defined genetic marker to the murine genome. Furthermore, the dtc-1 system indicates the need for reevaluation and restandardization of congenic strains of mice derived from the B6-H-2k congenic strain.
mesh_terms: D000818:Animals; D000954:Antigens, Surface / Q000235:genetics / Q000276:immunology*; D003602:Cytotoxicity, Immunologic; D005347:Fibroblasts / Q000276:immunology*; D008040:Genetic Linkage; D008214:Lymphocytes / Q000276:immunology*; D008264:Macrophages / Q000276:immunology*; D008285:Major Histocompatibility Complex; D051379:Mice; D008815:Mice, Inbred Strains; D009154:Mutation; D011110:Polymorphism, Genetic; D013602:T-Lymphocytes, Cytotoxic / Q000276:immunology*
chemical_list: D000954:Antigens, Surface