title: Impact of antigen-presenting cells on cytokine profiles of human Th clones established after stimulation with Mycobacterium tuberculosis antigens.
abstract: Human T cells reactive with mycobacterial antigens are generally considered to correlate with a Th1 cytokine profile. Our data show that, in addition, Th0 and Th2 clones develop in bulk culture with appropriate antigen-presenting cells before cloning. CD4+ blasts activated by mycobacterial antigens were cloned, and their mRNA patterns for the interleukins (IL) IL-2, IL-4, IL-5, IL-6, and IL-10 and gamma interferon were characterized by reverse-transcribed PCR. Nonadherent, nonrosetting, enriched peripheral blood mononuclear cells promoted development of Th0; after further depletion of monocytes and natural killer cells, Th2 clones were also found. Epstein-Barr virus-transformed B cells, with specificity for the stimulating antigen, increased the proportion of Th2 clones.
authors.affiliation: Department of Immunology, University of Ulm, Germany.
authors.forename: P
authors.initials: P
authors.lastname: Conradt
authors.forename: S H
authors.initials: SH
authors.lastname: Kaufmann
mesh_terms: D000938:Antigen-Presenting Cells / Q000276:immunology*; D000942:Antigens, Bacterial / Q000276:immunology*; D015496:CD4-Positive T-Lymphocytes / Q000166:cytology / Q000276:immunology; D002999:Clone Cells; D016207:Cytokines / Q000096:biosynthesis* / Q000235:genetics; D006801:Humans; D007371:Interferon-gamma / Q000032:analysis / Q000235:genetics; D007378:Interleukins / Q000032:analysis / Q000235:genetics; D009169:Mycobacterium tuberculosis / Q000276:immunology*; D012333:RNA, Messenger / Q000032:analysis; D006377:T-Lymphocytes, Helper-Inducer / Q000276:immunology*; D018418:Th2 Cells / Q000276:immunology
chemical_list: D000942:Antigens, Bacterial; D016207:Cytokines; D007378:Interleukins; D012333:RNA, Messenger; D007371:Interferon-gamma