title: Regulation of interleukin 2 receptors on T cells from multiple sclerosis patients.
abstract: Receptors for interleukin 2 (IL-2) are absent on resting T lymphocytes and are induced by antigenic and mitogenic stimulation. After a limited time (8-12 days), these receptors on normal T cells are down-regulated despite the presence of receptor-saturating concentrations of IL-2. We report here that both antigen- and mitogen-induced T-cell lines and clones obtained from peripheral blood and cerebrospinal fluid of multiple sclerosis patients show prolonged expression of IL-2 receptors. This expression is coincident with a prolonged responsiveness to the proliferative effects of IL-2. In addition, Leu 3+, IL-2 receptor-positive T-cell clone from the cerebrospinal fluid of a multiple sclerosis patient has been established and maintained for more than 1 year without IL-2. This clone has some morphologic and histochemical properties of T cells transformed or infected by human T-lymphotropic virus type I.
mesh_terms: D000911:Antibodies, Monoclonal; D000945:Antigens, Differentiation, T-Lymphocyte; D000954:Antigens, Surface / Q000032:analysis; D002555:Cerebrospinal Fluid / Q000166:cytology; D006801:Humans; D007376:Interleukin-2 / Q000494:pharmacology*; D008213:Lymphocyte Activation; D009103:Multiple Sclerosis / Q000134:cerebrospinal fluid / Q000276:immunology*; D011971:Receptors, Immunologic / Q000502:physiology*; D015375:Receptors, Interleukin-2; D011994:Recombinant Proteins / Q000494:pharmacology*; D013601:T-Lymphocytes / Q000276:immunology*
chemical_list: D000911:Antibodies, Monoclonal; D000945:Antigens, Differentiation, T-Lymphocyte; D000954:Antigens, Surface; D007376:Interleukin-2; D011971:Receptors, Immunologic; D015375:Receptors, Interleukin-2; D011994:Recombinant Proteins