title: Antigen-specific murine T-cell lymphomas. II. H-2 restriction of primary and secondary responses.
abstract: A stable clone of C57BL/6 (H-2b) radiation leukemia virus transformed ovalbumin (OVA)-specific murine T-cell lymphoma cells was able to mediate carrier-specific helper activity. The ability of these lymphoma cells to express helper activity for both primary and secondary hapten-specific B-cell responses was analyzed in nonirradiated normal or hapten-primed recipients. The lymphoma cells augmented anti-hapten responses in a carrier-specific manner; no bystander effects were noted. Helper activity was primarily noted in the IgG responses. The genetic restrictions affecting the expression of lymphoma-mediated helper activity were also analyzed. The pattern of restriction indicated that genes in the H-2 complex controlled the expression of helper activity; disparities at the Igh complex failed to influence helper activity. The cellular site of the H-2 restriction was between the antigen-presenting cells and the T-cell lymphoma not between the T and B cells. Precise intra-H-2 mapping of the gene(s) which control expression of lymphoma-mediated helper activity was attempted. Although most of the data were consistent with localization of the gene(s) to the I-A region, anomolous responses were noted in one strain.
mesh_terms: D000818:Animals; D000917:Antibody Formation; D001402:B-Lymphocytes / Q000276:immunology; D006183:H-2 Antigens / Q000235:genetics*; D007111:Immunity, Cellular; D007074:Immunoglobulin G / Q000032:analysis; D007942:Leukemia, Experimental / Q000276:immunology*; D008285:Major Histocompatibility Complex; D008297:Male; D051379:Mice; D008815:Mice, Inbred Strains; D013045:Species Specificity; D013601:T-Lymphocytes / Q000276:immunology*; D006377:T-Lymphocytes, Helper-Inducer / Q000276:immunology
chemical_list: D006183:H-2 Antigens; D007074:Immunoglobulin G