Prevention of superantigen-induced tolerance in vivo by interleukin-2 treatment. 1996 Submitted
Forskningsoutput: Tidskriftsbidrag › Artikel i vetenskaplig tidskrift
Injection of the superantigen staphylococcal enterotoxin A (SEA) activates both CD4+ and CD8+ T cells expressing certain families of T cell receptor (TCR) variable-region beta (V beta) chain. T cells respond with profound cytokine production and induction of cytotoxicity. Repeated injections, however, cause deletion and anergy of both CD4+ and CD8+ T cells, resulting in reduced frequency of SEA-responsive cells TCR-V beta11+ as well as reduced cytokine levels in serum upon challenge with SEA. Exogenous interleukin-2 (IL-2) in vivo rescued SEA-responsive CD4+ and CD8+ cells from SEA-induced deletion and/or increase expansion of SEA-primed cells as well as preventing downregulation of endogenous IL-2 production in vivo. Combined treatment with SEA and IL-2 also superinduced production of important cytokines for the cytotoxic function of T cells, tumour necrosis factor alpha, interferon gamma and IL-6, on a cellular level. These studies show that continuous stimulation with IL-2 in vivo could be useful for superantigen-based immunotherapy by induction of excessive T cell activation and by prevention of the development of T cell deletion and anergy.
|Enheter & grupper|
Ämnesklassifikation (UKÄ) – OBLIGATORISK
|Tidskrift||Cancer Immunology and Immunotherapy|
|Status||Published - 1997|
|Peer review utförd||Ja|
Activation of murine cytotoxic cells with interelukin-2 and the bacterial superantigen staphylococcal entertoxin A.Belfrage, H., 1996, Department of Cell and Molecular Biology, Lund University. 58 s.
Forskningsoutput: Avhandling › Doktorsavhandling (sammanläggning)