title: Aberrant MHC antigens in a sarcoma virus-induced mouse tumour.
abstract: From a series of mouse sarcomata, newly induced by Rous sarcoma virus (RSV), the DOH cell line was shown to lack expression of syngeneic H-2Kd and Dk antigens (Noll et al., 1986). It unexpectedly displayed determinants specific for H-2Kk molecules. Interferon treatment of DOH stimulated the expression of H-2Kk determinants and also the display of some, but not all, determinants of the syngeneic H-2Kd molecules. H-2Dk expression was not stimulated. Southern blot hybridization of genomic DNA digests from DOH cells confirmed the identity of the H-2K region with that from syngeneic C3H.OH liver cells, but also showed changes in the pattern of restriction fragments that contain class I genes from the D and Qa regions. These results suggest that aberrant MHC class I molecules that carry H-2Kd- and H-2Kk-like determinants are expressed by DOH sarcoma cells. These molecules may act as target antigens for tumour-specific cytotoxic T cells elicited by injection of DOH cells into syngeneic mice.
mesh_terms: D000818:Animals; D000951:Antigens, Neoplasm / Q000235:genetics / Q000276:immunology*; D001358:Avian Sarcoma Viruses; D002460:Cell Line; D006183:H-2 Antigens / Q000235:genetics / Q000276:immunology*; D007370:Interferon Type I / Q000494:pharmacology; D051379:Mice; D008809:Mice, Inbred C3H; D012513:Sarcoma, Experimental / Q000235:genetics / Q000276:immunology*; D013602:T-Lymphocytes, Cytotoxic / Q000276:immunology
chemical_list: D000951:Antigens, Neoplasm; D006183:H-2 Antigens; D007370:Interferon Type I