PMID- 20049872 OWN - NLM STAT- MEDLINE DCOM- 20100308 LR - 20211203 IS - 1097-4652 (Electronic) IS - 0021-9541 (Linking) VI - 223 IP - 1 DP - 2010 Apr TI - NF-kappaB activation stimulates osteogenic differentiation of mesenchymal stem cells derived from human adipose tissue by increasing TAZ expression. PG - 168-77 LID - 10.1002/jcp.22024 [doi] AB - Tumor necrosis factor-alpha (TNF-alpha) is a skeletal catabolic agent that stimulates osteoclastogenesis and inhibits osteoblast function. Although TNF-alpha inhibits the mineralization of osteoblasts, the effect of TNF-alpha on mesenchymal stem cells (MSC) is not clear. In this study, we determined the effect of TNF-alpha on osteogenic differentiation of stromal cells derived from human adipose tissue (hADSC) and the role of NF-kappaB activation on TNF-alpha activity. TNF-alpha treatment dose-dependently increased osteogenic differentiation over the first 3 days of treatment. TNF-alpha activated ERK and increased NF-kappaB promoter activity. PDTC, an NF-kappaB inhibitor, blocked the osteogenic differentiation induced by TNF-alpha and TLR-ligands, but U102, an ERK inhibitor, did not. Overexpression of miR-146a induced the inhibition of IRAK1 expression and inhibited basal and TNF-alpha- and TLR ligand-induced osteogenic differentiation. TNF-alpha and TLR ligands increased the expression of transcriptional coactivator with PDZ-binding motif (TAZ), which was inhibited by the addition of PDTC. A ChIP assay showed that p65 was bound to the TAZ promoter. TNF-alpha also increased osteogenic differentiation of human gastroepiploic artery smooth muscle cells. Our data indicate that TNF-alpha enhances osteogenic differentiation of hADSC via the activation of NF-kappaB and a subsequent increase of TAZ expression. CI - J. Cell. Physiol. 223: 168-177, 2010. (c) 2009 Wiley-Liss, Inc. FAU - Cho, Hyun Hwa AU - Cho HH AD - Department of Physiology, School of Medicine, Pusan National University, Yangsan, Korea. FAU - Shin, Keun Koo AU - Shin KK FAU - Kim, Yeon Jeong AU - Kim YJ FAU - Song, Ji Sun AU - Song JS FAU - Kim, Jong Myung AU - Kim JM FAU - Bae, Yong Chan AU - Bae YC FAU - Kim, Chi Dae AU - Kim CD FAU - Jung, Jin Sup AU - Jung JS LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - J Cell Physiol JT - Journal of cellular physiology JID - 0050222 RN - 0 (Butadienes) RN - 0 (MIRN146 microRNA, human) RN - 0 (MicroRNAs) RN - 0 (NF-kappa B) RN - 0 (Nitriles) RN - 0 (Protein Kinase Inhibitors) RN - 0 (Pyrrolidines) RN - 0 (RELA protein, human) RN - 0 (Recombinant Proteins) RN - 0 (Thiocarbamates) RN - 0 (Toll-Like Receptors) RN - 0 (Transcription Factor RelA) RN - 0 (Transcription Factors) RN - 0 (Tumor Necrosis Factor-alpha) RN - 0 (U 0126) RN - 25769-03-3 (pyrrolidine dithiocarbamic acid) RN - EC 2.3.- (Acyltransferases) RN - EC 2.3.1.- (TAFAZZIN protein, human) RN - EC 2.7.11.1 (IRAK1 protein, human) RN - EC 2.7.11.1 (Interleukin-1 Receptor-Associated Kinases) RN - EC 2.7.11.24 (Extracellular Signal-Regulated MAP Kinases) SB - IM MH - Acyltransferases MH - Adipose Tissue/cytology/drug effects/*metabolism MH - Binding Sites MH - Butadienes/pharmacology MH - Calcinosis/metabolism/pathology MH - *Cell Differentiation/drug effects MH - Cells, Cultured MH - Enzyme Activation MH - Extracellular Signal-Regulated MAP Kinases/antagonists & inhibitors/metabolism MH - Female MH - Humans MH - Interleukin-1 Receptor-Associated Kinases/metabolism MH - Male MH - Mesenchymal Stem Cells/drug effects/*metabolism MH - MicroRNAs/metabolism MH - Middle Aged MH - Muscle, Smooth, Vascular/metabolism/pathology MH - Myocytes, Smooth Muscle/metabolism/pathology MH - NF-kappa B/antagonists & inhibitors/genetics/*metabolism MH - Nitriles/pharmacology MH - *Osteogenesis/drug effects MH - Promoter Regions, Genetic MH - Protein Kinase Inhibitors/pharmacology MH - Pyrrolidines/pharmacology MH - RNA Interference MH - Recombinant Proteins/metabolism MH - Thiocarbamates/pharmacology MH - Time Factors MH - Toll-Like Receptors/metabolism MH - Transcription Factor RelA/metabolism MH - Transcription Factors/genetics/*metabolism MH - Transfection MH - Tumor Necrosis Factor-alpha/metabolism MH - Up-Regulation EDAT- 2010/01/06 06:00 MHDA- 2010/03/10 06:00 CRDT- 2010/01/06 06:00 PHST- 2010/01/06 06:00 [entrez] PHST- 2010/01/06 06:00 [pubmed] PHST- 2010/03/10 06:00 [medline] AID - 10.1002/jcp.22024 [doi] PST - ppublish SO - J Cell Physiol. 2010 Apr;223(1):168-77. doi: 10.1002/jcp.22024.