title: H-2 compatibility requirement for virus-specific T-cell-mediated cytolysis. Evaluation of the role of H-2I region and non-H-2 genes in regulating immune response.
abstract: Lymphocytic choriomeningitis virus (LCMV) and ectromelia virus-specific T-cell-mediated cytotoxicity was assayed in various strain combinations using as targets peritoneal macrophages which have been shown to express Ia antigens. Virus-specific cytotoxicity was found only in H-2K- or D-region compatible combinations. I-region compatibility was not necessary nor alone sufficient for lysis. Six different I-region specificities had no obvious effect on the capacity to generate in vivo specific cytotoxicity (expressed in vitro) associated with Dd. Low LCMV-specific cytotoxic activity generated in DBA/2 mice was caused by the non-H-2 genetic background. This trait was inversely related to the infectious virus dose and recessive. Non-H-2 genes, possibly involved in controlling initial spread and multiplication of virus, seem to be, at least in the examples tested, more important in determining virus-specific cytotoxic T-cell activity in spleens than are Ir genes coded in H-2.
mesh_terms: D000818:Animals; D000956:Antigens, Viral; D002874:Chromosome Mapping; D003601:Cytotoxicity Tests, Immunologic; D005796:Genes; D005808:Genes, Recessive; D008040:Genetic Linkage; D006649:Histocompatibility Antigens; D007111:Immunity, Cellular; D007519:Isoantigens; D008217:Lymphocytic choriomeningitis virus / Q000276:immunology*; D008264:Macrophages / Q000276:immunology; D051379:Mice; D008815:Mice, Inbred Strains; D013601:T-Lymphocytes / Q000276:immunology*; D014616:Vaccinia virus / Q000276:immunology
chemical_list: D000956:Antigens, Viral; D006649:Histocompatibility Antigens; D007519:Isoantigens