title: Retrovirus-induced expression of interleukin 2 receptors on cells of human B-cell lineage.
abstract: We provide direct evidence for interleukin 2 receptor (IL2R) induction by human T-cell leukemia/lymphoma virus (HTLV) in human B-cell lines. A lymphoblastoid B-cell line (LCL-Ter) was established by Epstein-Barr virus-induced transformation of peripheral blood lymphocytes derived from a healthy HTLV carrier and cloned in vitro. HTLV gp21 and/or p19 antigens were detected in eight LCL-Ter clones, all of which also expressed the IL2R antigens Tac and Hiei (defined by monoclonal antibodies). However, five other LCL-Ter clones, which were negative for the HTLV antigens, did not express the IL2R antigens. Furthermore, when the IL2R-negative B-cell line LCL-Kan, derived form a normal donor, was cocultured with HTLV-producer cells, three HTLV-carrying clones were obtained and found to constitutively express IL2R. IL2R induced by HTLV on these B-cell lines bound recombinant interleukin 2 and were similar in apparent molecular mass (approximately equal to 60 kDa) to the IL2R of peripheral blood lymphocytes stimulated with phytohemagglutinin.
mesh_terms: D000954:Antigens, Surface / Q000032:analysis; D001402:B-Lymphocytes / Q000276:immunology*; D002460:Cell Line; D002472:Cell Transformation, Viral; D017977:Deltaretrovirus / Q000235:genetics*; D004854:Herpesvirus 4, Human / Q000235:genetics; D006801:Humans; D007376:Interleukin-2 / Q000276:immunology*; D011863:Radioimmunoassay; D011971:Receptors, Immunologic / Q000276:immunology*; D015375:Receptors, Interleukin-2
chemical_list: D000954:Antigens, Surface; D007376:Interleukin-2; D011971:Receptors, Immunologic; D015375:Receptors, Interleukin-2