title: Two-dimensional flow cytometric analysis of T cell subsets maintained in IL-2 medium after autologous mixed leukocyte reaction activation.
abstract: Human T cells are stimulated with an autologous mixed leukocyte reaction (AMLR) and can be propagated in interleukin-2. Staining of the cultured cells with the combination of two monoclonal antibodies was evaluated by two-dimensional flow cytometry at weekly intervals. AMLR activation resulted in an initial preservation of the CD4+ (helper/inducer T) subset predominance over the CD8+ (suppressor/cytotoxic T) cells, noted on normal circulating blood lymphocytes. However, during culture in interleukin-2, there was a progressive increase in the percentages of CD8+ Leu 15- cytotoxic T, CD4+ Leu 8- helper T, and CD3+ HLA-DR+ activated T cells, and a concomitant decrease in those of CD4+ Leu 8+ suppressor inducer T and CD8+ Leu 15+ suppressor T cells if the responder sheep red blood cell (SRBC)-rosetting T cells were made up by tris ammonium chloride, but not by hypotonic shock treatment to lyse SRBC. The significant difference between hypotonic shock-T cells and ammonium chloride-T cells in the phenotypic changes of T cell subsets after long-term culture in an interleukin-2 medium may suggest a regulatory role of the ammonium chloride-sensitive T cells in the AMLR.
authors.affiliation: Department of Medicine and Physical Therapy, Faculty of Medicine, University of Tokyo.
authors.forename: M
authors.initials: M
authors.lastname: Goto
authors.forename: T
authors.initials: T
authors.lastname: Miyamoto
authors.forename: K
authors.initials: K
authors.lastname: Nishioka
mesh_terms: D000328:Adult; D002455:Cell Division; D002469:Cell Separation; D003470:Culture Media; D005434:Flow Cytometry; D006801:Humans; D007376:Interleukin-2 / Q000276:immunology / Q000494:pharmacology*; D007959:Lymphocyte Culture Test, Mixed; D008297:Male; D013601:T-Lymphocytes / Q000166:cytology / Q000276:immunology*; D013602:T-Lymphocytes, Cytotoxic / Q000166:cytology / Q000276:immunology; D006377:T-Lymphocytes, Helper-Inducer / Q000166:cytology / Q000276:immunology; D050378:T-Lymphocytes, Regulatory / Q000166:cytology / Q000276:immunology
chemical_list: D003470:Culture Media; D007376:Interleukin-2