PMID- 18060853 OWN - NLM STAT- MEDLINE DCOM- 20080205 LR - 20211020 IS - 1090-2104 (Electronic) IS - 0006-291X (Print) IS - 0006-291X (Linking) VI - 366 IP - 1 DP - 2008 Feb 1 TI - Prostaglandin E2 inhibits tumor necrosis factor-alpha RNA through PKA type I. PG - 104-9 AB - Tumor necrosis factor-alpha (TNF-alpha) is a cytokine that may contribute to the pathogenesis of septic shock, rheumatoid arthritis, cancer, and diabetes. Prostaglandins endogenously produced by macrophages act in an autocrine fashion to limit TNF-alpha production. We investigated the timing and signaling pathway of prostaglandin-mediated inhibition of TNF-alpha production in Raw 264.7 and J774 macrophages. TNF-alpha mRNA levels were rapidly modulated by PGE(2) or carbaprostacylin. PGE(2) or carbaprostacyclin prevented and rapidly terminated on-going TNF-alpha gene transcription within 15 min of prostaglandin treatment. Selective activation of PKA type I, but not PKA type II or Epac, with chemical analogs of cAMP was sufficient to inhibit LPS-induced TNF-alpha mRNA levels. The mechanisms by which prostaglandins limit TNF-alpha mRNA levels may underlie endogenous regulatory mechanisms that limit inflammation, and may have important implications for understanding chronic inflammatory disease pathogenesis. FAU - Stafford, Jennifer B AU - Stafford JB AD - Department of Biochemistry, Vanderbilt University School of Medicine, 23rd Avenue South at Pierce, Nashville, TN 37232-0146, USA. FAU - Marnett, Lawrence J AU - Marnett LJ LA - eng GR - P01 GM015431/GM/NIGMS NIH HHS/United States GR - P50 GM015431/GM/NIGMS NIH HHS/United States GR - P50 GM015431-410001/GM/NIGMS NIH HHS/United States GR - GM015431/GM/NIGMS NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural DEP - 20071203 PL - United States TA - Biochem Biophys Res Commun JT - Biochemical and biophysical research communications JID - 0372516 RN - 0 (Tumor Necrosis Factor-alpha) RN - 63231-63-0 (RNA) RN - EC 2.7.11.11 (Cyclic AMP-Dependent Protein Kinase Type I) RN - K7Q1JQR04M (Dinoprostone) SB - IM MH - Animals MH - Cell Line MH - Cyclic AMP-Dependent Protein Kinase Type I/*metabolism MH - Dinoprostone/*administration & dosage MH - Dose-Response Relationship, Drug MH - Macrophages/drug effects/*metabolism MH - Mice MH - RNA/metabolism MH - Signal Transduction/drug effects/*physiology MH - Tumor Necrosis Factor-alpha/genetics/*metabolism PMC - PMC2761429 MID - NIHMS37230 EDAT- 2007/12/07 09:00 MHDA- 2008/02/06 09:00 PMCR- 2009/10/13 CRDT- 2007/12/07 09:00 PHST- 2007/11/16 00:00 [received] PHST- 2007/11/19 00:00 [accepted] PHST- 2007/12/07 09:00 [pubmed] PHST- 2008/02/06 09:00 [medline] PHST- 2007/12/07 09:00 [entrez] PHST- 2009/10/13 00:00 [pmc-release] AID - S0006-291X(07)02509-0 [pii] AID - 10.1016/j.bbrc.2007.11.091 [doi] PST - ppublish SO - Biochem Biophys Res Commun. 2008 Feb 1;366(1):104-9. doi: 10.1016/j.bbrc.2007.11.091. Epub 2007 Dec 3.