title: Selective anergy of V beta 8+,CD4+ T cells in Staphylococcus enterotoxin B-primed mice.
abstract: The cellular basis of the in vitro and in vivo T cell responses to Staphylococcus enterotoxin B (SEB) has been investigated. The proliferation and cytotoxicity of V beta 8.1,2+,CD4+ and CD8+ T cells were observed in in vitro response to SEB. In primary cytotoxicity assays, CD4+ T cells from control spleens were more active than their CD8+ counterparts, however, in cells derived from SEB-primed mice, CD8+ T cells were dominant in SEB-specific cytotoxicity. In vivo priming with SEB abrogated the response of V beta 8.1,2+,CD4+ T cells despite the fact that these cells exist in significant number. This SEB-specific anergy occurred only in V beta 8.1,2+,CD4+ T cells but not in CD8+ T cells. These findings indicate that the requirement for the induction of antigen-specific anergy is different between CD4+ and CD8+ T cells in post-thymic tolerance, and the existence of coanergic signals for the induction of T cell anergy is suggested.
authors.affiliation: Department of Immunology and Medical Genetics, University of Toronto, Ontario, Canada.
authors.forename: Y
authors.initials: Y
authors.lastname: Kawabe
authors.forename: A
authors.initials: A
authors.lastname: Ochi
mesh_terms: D000818:Animals; D015496:CD4-Positive T-Lymphocytes / Q000187:drug effects / Q000276:immunology*; D003602:Cytotoxicity, Immunologic; D004768:Enterotoxins / Q000494:pharmacology*; D007376:Interleukin-2 / Q000096:biosynthesis; D008213:Lymphocyte Activation; D051379:Mice; D008807:Mice, Inbred BALB C; D011948:Receptors, Antigen, T-Cell / Q000032:analysis*; D013154:Spleen / Q000276:immunology; D013211:Staphylococcus aureus; D050378:T-Lymphocytes, Regulatory / Q000276:immunology*
chemical_list: D004768:Enterotoxins; D007376:Interleukin-2; D011948:Receptors, Antigen, T-Cell; C031818:enterotoxin B, staphylococcal