title: Null cell immunoregulation in SLE.
abstract: Fresh normal T cells do not lyse MDA-157 target cells. Normal null cells, cultured for 4 days with MDA-157 stimulators, and then mixed overnight with fresh normal T cells, induce cytotoxicity on MDA-157 targets and suppressor activity in the T-cell acceptor population. With the same normal acceptor T cells, MDA-157 activated null cells from 13/18 patients with Systemic Lupus Erythematosus (SLE), unlike activated cells from a disease control population, induce little or no T-cell cytotoxicity or suppression. These results provide further evidence for abnormal null cell function in SLE.
mesh_terms: D002478:Cells, Cultured; D005260:Female; D006801:Humans; D007108:Immune Tolerance; D008180:Lupus Erythematosus, Systemic / Q000276:immunology* / Q000473:pathology; D008213:Lymphocyte Activation; D007959:Lymphocyte Culture Test, Mixed; D008215:Lymphocytes, Null / Q000276:immunology*; D013602:T-Lymphocytes, Cytotoxic / Q000276:immunology; D050378:T-Lymphocytes, Regulatory / Q000276:immunology