title: Correlation of tumor specific delayed type hypersensitivity reaction and tumor protection to SV40-induced mKSA fibrosarcoma.
abstract: Mice immunized by excision of a primary, subcutaneously growing SV40-induced mKSA solid tumor which resisted challenge of homologous tumor cells administered at a contralateral site, were found to develop a specific DTH response to SV40 tumor associated transplantation antigens (TATA). In a two-way criss-cross experiment, this DTH response (assessed by direct challenge) was found to be one-way SV40 specific in that chemically induced, non SV40, MCA tumor failed to elicit a DTH response in mice primed by excision of mKSA tumor. These mice also showed a corresponding one-way specific protection against challenge with live homologous mKSA sarcoma cells. In contrast immunization and challenge of MCA-excised mice with either MCA or mKSA tumor cells, exhibited cross-reactivity in both DTH response and protection against either tumor. Unlike this cross-immunity by the direct challenge method, transfer of "immune" spleen cells from mKSA or MCA excision-primed mice demonstrated a specific DTH response and protection to the original immunizing, homologous but not heterologous tumor. Tumor resistant, DTH-primed mice remained DTH reactive to the primary tumor cells over a period of 4 weeks. Characterization of the splenic T-DTH cells in mice primed by excision of mKSA tumor, indicated a Lyt 1+2+ phenotype of cells conferring both the DTH response and the immune protection against mKSA sarcoma in a local (Winn) adoptive transfer assay, thus reinforcing the correlation between the DTH response and the antitumor protection.
mesh_terms: D000818:Animals; D000950:Antigens, Ly / Q000032:analysis; D000951:Antigens, Neoplasm / Q000276:immunology; D005260:Female; D005354:Fibrosarcoma / Q000276:immunology / Q000382:microbiology; D006649:Histocompatibility Antigens / Q000276:immunology; D006968:Hypersensitivity, Delayed; D007700:Kinetics; D008214:Lymphocytes / Q000276:immunology; D008297:Male; D051379:Mice; D008807:Mice, Inbred BALB C; D008810:Mice, Inbred C57BL; D010641:Phenotype; D012513:Sarcoma, Experimental / Q000276:immunology*; D013539:Simian virus 40 / Q000276:immunology
chemical_list: D000950:Antigens, Ly; D000951:Antigens, Neoplasm; D006649:Histocompatibility Antigens; C029237:tumor-associated transplantation antigen