title: Antigen-dependent regulation of interleukin 2 receptor expression on cloned human cytotoxic T lymphocytes.
abstract: IL 2 receptor expression as a function of time after antigenic stimulation was examined on antigen-dependent human CTL clones specific for type A influenza virus. The anti-Tac monoclonal antibody was used to follow IL 2 receptor levels on the cloned cells. Shortly after antigenic stimulation, IL 2 receptor expression was maximal; by 1 wk, however, levels had decayed considerably, and by 2 wk only background expression remained. Reexpression of IL 2 receptors could be induced by exposure of quiescent clones to antigen or lectin. IL 2-driven proliferation of the cytotoxic clones was also examined, and it decayed with the same kinetics as IL 2 receptor levels. Proliferation of quiescent cells could also be obtained by antigen-specific stimulation. Thus, IL 2 receptor expression by human CTL clones at least in part regulates the antigen-specific proliferation of these cells.
mesh_terms: D000911:Antibodies, Monoclonal / Q000502:physiology; D000956:Antigens, Viral / Q000502:physiology*; D001666:Binding Sites, Antibody; D002999:Clone Cells / Q000378:metabolism; D000939:Epitopes; D006801:Humans; D009980:Influenza A virus / Q000276:immunology; D007376:Interleukin-2 / Q000378:metabolism*; D007700:Kinetics; D008213:Lymphocyte Activation; D011971:Receptors, Immunologic / Q000096:biosynthesis* / Q000276:immunology / Q000502:physiology; D015375:Receptors, Interleukin-2; D013602:T-Lymphocytes, Cytotoxic / Q000276:immunology / Q000378:metabolism*
chemical_list: D000911:Antibodies, Monoclonal; D000956:Antigens, Viral; D000939:Epitopes; D007376:Interleukin-2; D011971:Receptors, Immunologic; D015375:Receptors, Interleukin-2