title: Effects of dimethyl sulfoxide treatment on H-2 expression and susceptibility to NK- or cytotoxic T-lymphocyte-mediated lysis of the YAC-1 lymphoma and its beta 2-microglobulin-deficient variant.
abstract: The effects of dimethyl sulfoxide (DMSO) on H-2 expression and susceptibility to NK- and cytotoxic T-lymphocyte (CTL)-mediated lysis in the murine T-cell lymphoma YAC-1 and its beta-2-microglobulin (beta 2m)-deficient variant were studied. Fluorescence-activated cell sorter analysis revealed induction of H-2Kk and beta 2m 3 days after culture of YAC-1 with DMSO, whereas optimal H-2Dd induction required more than 1 week. H-2Kk and H-2Dd induction by DMSO was equal to pretreatment of YAC-1 cells with 50-100 and 10-20 U/ml interferon (IFN)-gamma, respectively, but the T-cell differentiation antigens Lyt-1, Lyt-2, Thy-1, and L3T4 remained unaffected. DMSO protected YAC-1 cells from NK lysis as efficiently as 10-20 U IFN/ml, whereas susceptibility to anti-H-2a-, H-2Kk-, and H-2Dd-specific CTLs was augmented as in IFN-treated YAC-1 cells. In contrast, the beta 2m-deficient variant, which remained H-2 negative at the cell surface after DMSO treatment, also remained NK sensitive. Thus DMSO can induce H-2 expression and alter the sensitivity of murine lymphoma cells to different effector cells.
mesh_terms: D000818:Animals; D002470:Cell Survival / Q000187:drug effects; D003602:Cytotoxicity, Immunologic / Q000187:drug effects*; D004121:Dimethyl Sulfoxide / Q000494:pharmacology*; D006183:H-2 Antigens / Q000032:analysis*; D007371:Interferon-gamma / Q000494:pharmacology; D007694:Killer Cells, Natural / Q000276:immunology*; D008223:Lymphoma / Q000276:immunology* / Q000473:pathology; D051379:Mice; D008815:Mice, Inbred Strains; D013602:T-Lymphocytes, Cytotoxic / Q000276:immunology*; D014407:Tumor Cells, Cultured / Q000187:drug effects; D001613:beta 2-Microglobulin / Q000032:analysis*
chemical_list: D006183:H-2 Antigens; D001613:beta 2-Microglobulin; D007371:Interferon-gamma; D004121:Dimethyl Sulfoxide