PMID- 19101507 OWN - NLM STAT- MEDLINE DCOM- 20090213 LR - 20101118 IS - 1090-2104 (Electronic) IS - 0006-291X (Linking) VI - 379 IP - 2 DP - 2009 Feb 6 TI - RhoA induces expression of inflammatory cytokine in adipocytes. PG - 288-92 LID - 10.1016/j.bbrc.2008.12.040 [doi] AB - Rho GTPase regulates actin cytoskeleton organization and assembly in many cell types, however, its significance in adipose tissue is not well characterized. Here, we demonstrate high RhoA activity in adipose tissues of C57BL/6J mice. To determine the effect of RhoA activation on 3T3-L1 cells, stable cell lines overexpressing G14VRhoA fused to destabilizing domain of FKBP12 (DD-G14VRhoA-L1) were generated. Treatment of DD-G14VRhoA-L1 cells with Shield1 following their differentiation into adipocytes, resulted in the appearance of thick cortical actin filaments, and increased the mRNA expression levels of plasminogen activator inhibitor type-1 (PAI-1) and monocyte chemoattractant protein-1 (MCP-1). The induction of PAI-1 and MCP-1 was inhibited by treatment with a Rho-associated kinase (ROCK) inhibitor, Y-27632. In 3T3-L1 adipocytes, tumor necrosis factor-alpha activated RhoA and increased mRNA expression of PAI-1 and MCP-1, and their treatment with Y-27632 partially inhibited these changes. The results indicate that RhoA-ROCK pathway induces inflammatory cytokine expression in adipocytes. FAU - Nakayama, Yuki AU - Nakayama Y AD - Department of Organismal Biosystems, Graduate School of Frontier Biosciences, Osaka University, 2-2 Yamadaoka, Suita, Osaka 565-0871, Japan. FAU - Komuro, Ryutaro AU - Komuro R FAU - Yamamoto, Akiko AU - Yamamoto A FAU - Miyata, Yugo AU - Miyata Y FAU - Tanaka, Masaki AU - Tanaka M FAU - Matsuda, Morihiro AU - Matsuda M FAU - Fukuhara, Atsunori AU - Fukuhara A FAU - Shimomura, Iichiro AU - Shimomura I LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20081225 PL - United States TA - Biochem Biophys Res Commun JT - Biochemical and biophysical research communications JID - 0372516 RN - 0 (Amides) RN - 0 (Ccl2 protein, mouse) RN - 0 (Chemokine CCL2) RN - 0 (Cytokines) RN - 0 (Protein Kinase Inhibitors) RN - 0 (Pyridines) RN - 0 (Serpin E2) RN - 0 (Serpine2 protein, mouse) RN - 0 (Serpins) RN - 0 (Tumor Necrosis Factor-alpha) RN - 138381-45-0 (Y 27632) RN - EC 2.7.11.1 (rho-Associated Kinases) RN - EC 3.6.5.2 (rhoA GTP-Binding Protein) SB - IM MH - 3T3 Cells MH - Adipocytes/*enzymology MH - Amides/pharmacology MH - Animals MH - Chemokine CCL2/biosynthesis MH - Cytokines/*biosynthesis MH - Male MH - Mice MH - Mice, Inbred C57BL MH - Protein Kinase Inhibitors/pharmacology MH - Pyridines/pharmacology MH - Serpin E2 MH - Serpins/biosynthesis MH - Tumor Necrosis Factor-alpha/pharmacology MH - rho-Associated Kinases/antagonists & inhibitors/metabolism MH - rhoA GTP-Binding Protein/antagonists & inhibitors/*metabolism EDAT- 2008/12/23 09:00 MHDA- 2009/02/14 09:00 CRDT- 2008/12/23 09:00 PHST- 2008/12/08 00:00 [received] PHST- 2008/12/09 00:00 [accepted] PHST- 2008/12/23 09:00 [entrez] PHST- 2008/12/23 09:00 [pubmed] PHST- 2009/02/14 09:00 [medline] AID - S0006-291X(08)02426-1 [pii] AID - 10.1016/j.bbrc.2008.12.040 [doi] PST - ppublish SO - Biochem Biophys Res Commun. 2009 Feb 6;379(2):288-92. doi: 10.1016/j.bbrc.2008.12.040. Epub 2008 Dec 25.