title: Patterns of interferon-gamma mRNA expression in toxic shock syndrome toxin-1 expanded V beta 11+ T lymphocytes.
abstract: We have recently demonstrated that toxic shock syndrome toxin-1 (TSST-1), a staphylococcal exotoxin with superantigenic properties, is involved in the pathogenesis of septic arthritis. The aim of the current study was to characterize in detail the in vitro properties of TSST-1 with regard to T cell activation patterns. We demonstrate that TSST-1 preferentially expands murine V beta 11+ T lymphocytes and this expansion occurs equally well within CD4 and CD8 compartments. To analyze the functional properties of V beta 11+ T cells expanded in response to TSST-1, we have utilized a combined in situ hybridization and immunocytochemistry method. With this technique we show that TSST-1-stimulated V beta 11+ T cells are an important source of IFN gamma mRNA synthesis, suggesting that this cytokine may participate in superantigen-mediated septic arthritis.
authors.affiliation: Department of Clinical Immunology, University of Göteborg, Sweden.
authors.forename: Y X
authors.initials: YX
authors.lastname: Zhao
authors.forename: A
authors.initials: A
authors.lastname: Abdelnour
authors.forename: A
authors.initials: A
authors.lastname: Ljungdahl
authors.forename: T
authors.initials: T
authors.lastname: Olsson
authors.forename: A
authors.initials: A
authors.lastname: Tarkowski
mesh_terms: D000818:Animals; D001427:Bacterial Toxins; D002454:Cell Differentiation; D002455:Cell Division; D002478:Cells, Cultured; D004768:Enterotoxins / Q000276:immunology*; D005260:Female; D005434:Flow Cytometry; D007150:Immunohistochemistry; D017403:In Situ Hybridization; D007371:Interferon-gamma / Q000096:biosynthesis* / Q000235:genetics; D008213:Lymphocyte Activation; D008297:Male; D051379:Mice; D012333:RNA, Messenger / Q000096:biosynthesis; D016693:Receptors, Antigen, T-Cell, alpha-beta / Q000276:immunology*; D013154:Spleen / Q000166:cytology / Q000276:immunology; D018089:Superantigens / Q000276:immunology*; D013601:T-Lymphocytes / Q000276:immunology*
chemical_list: D001427:Bacterial Toxins; D004768:Enterotoxins; D012333:RNA, Messenger; D016693:Receptors, Antigen, T-Cell, alpha-beta; D018089:Superantigens; C030107:enterotoxin F, Staphylococcal; D007371:Interferon-gamma