title: Resistance to murine leukemia in mice rejecting syngeneic somatic hybrid cells.
abstract: (A/J X C3H/HeJ) F1 mice reject somatic cell hybrids of ASL-1 cells (A origin) and LM(TK)- cells (C3H origin), but die from leukemia within 10 days after the inoculation of approximately 10(6) viable ASL-1 cells. Mice rejecting hybrid cells survive for prolonged periods after challenge with otherwise lethal numbers of ASL-1 cells. The hybrid cells, rejected by syngeneic F1 recipients, retained their oncogenic potential as determined by the appearance and progressive growth of tumors in immunologically deficient nu/nu mice injected with the cells. Similar results were obtained using hybrids of a radiation-induced cell line (RADA-1), maintained by serial transfer in strain A mice and LM(TK)- cells. Syngeneic mice injected with RADA-1 X LM(TK)- cells failed to form tumors. Mice rejecting RADA-1 X LM(TK)- hybrid cells survived for prolonged periods after challenge with otherwise lethal numbers of RADA-1 cells.
mesh_terms: D000818:Animals; D002471:Cell Transformation, Neoplastic; D006084:Graft Rejection; D007942:Leukemia, Experimental / Q000276:immunology*; D051379:Mice; D008805:Mice, Inbred A; D008809:Mice, Inbred C3H; D008819:Mice, Nude; D008937:Mitomycins / Q000378:metabolism
chemical_list: D008937:Mitomycins