Title : Prostaglandin E2 suppresses nuclear factor-kappaB mediated interleukin 15 production in rheumatoid synoviocytes.

Pub. Date : 2002 Jul

PMID : 12136890






8 Functional Relationships(s)
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1 Prostaglandin E2 suppresses nuclear factor-kappaB mediated interleukin 15 production in rheumatoid synoviocytes. Dinoprostone interleukin 15 Homo sapiens
2 RESULTS: PGE2 at concentrations from 10(-11) to 10(-5) M inhibited secretion of IL-15 by FLS, while increasing IL-10 production, in a dose dependent manner. Dinoprostone interleukin 15 Homo sapiens
3 IL-15 production stimulated by interferon-gamma (IFN-gamma), IL-1beta, or lipopolysaccharide were also strongly inhibited by PGE2. Dinoprostone interleukin 15 Homo sapiens
4 This PGE2-mediated inhibition of IL-15 production appears to be dependent in part on the increase of IL-10, since neutralizing anti-IL-10 antibodies reversed this inhibition to some extent. Dinoprostone interleukin 15 Homo sapiens
5 The EMSA of the NF-kappaB site in the IL-15 promoter showed that PGE2 inhibited binding of NF-kappaB in a dose dependent manner. Dinoprostone interleukin 15 Homo sapiens
6 Experiments using inducers and an inhibitor of cyclic AMP (cAMP) suggest that a major intracellular signal mediates the regulatory effect of PGE2 on the production of IL-15 and IL-10. Dinoprostone interleukin 15 Homo sapiens
7 CONCLUSION: PGE2 differentially regulates the production of IL-15 and IL-10 in FLS. Dinoprostone interleukin 15 Homo sapiens
8 The strong inhibition of PGE2 on IL-15 production is exerted via a cAMP-dependent modulation of NF-kappaB activity. Dinoprostone interleukin 15 Homo sapiens