title: A Hodgkin cell-specific antigen is expressed on a subset of auto- and alloactivated T (helper) lymphoblasts.
abstract: A Hodgkin cell-specific antigen detected by the monoclonal antibody Ki-1 was found on T helper lymphocytes after activation by autologous and allogeneic stimulator cells. About 50% of lymphoblasts generated by auto- and alloactivation reacted with the antibody. In contrast, only less than 6% of lymphoblasts stimulated with Con-A, phytohemagglutinin (PHA), or protein A, and none of lymphoblasts activated by oxidative mitogenesis, expressed this antigen. Among several permanent cell lines tested, the K562, MOLT-4, HL-60, and EBV transformed B lymphoblastoid cells reacted with the Ki-1 antibody. The results may indicate possible relationships between the autoreactive subset of T lymphocytes and the pathogenesis of Hodgkin's disease.
mesh_terms: D000911:Antibodies, Monoclonal; D000941:Antigens / Q000276:immunology*; D001402:B-Lymphocytes / Q000276:immunology; D002472:Cell Transformation, Viral; D000939:Epitopes; D004854:Herpesvirus 4, Human / Q000276:immunology; D006689:Hodgkin Disease / Q000097:blood*; D006801:Humans; D008213:Lymphocyte Activation; D006377:T-Lymphocytes, Helper-Inducer / Q000276:immunology*
chemical_list: D000911:Antibodies, Monoclonal; D000941:Antigens; D000939:Epitopes