PMID- 20804756 OWN - NLM STAT- MEDLINE DCOM- 20101029 LR - 20220317 IS - 1873-3468 (Electronic) IS - 0014-5793 (Linking) VI - 584 IP - 19 DP - 2010 Oct 8 TI - The density of extracellular matrix proteins regulates inflammation and insulin signaling in adipocytes. PG - 4145-50 LID - 10.1016/j.febslet.2010.08.033 [doi] AB - Cells can not only sense the type of extracellular matrix (ECM) protein that is present in the microenvironment, but they can also sense its density. Here, we investigated the effects of ECM protein density on adipokine secretion and insulin signaling in adipocytes. To this end, 3T3-L1 adipocytes were cultured on the surface of polyacrylamide gels that were coated with gradient densities of a collagen type I and fibronectin mixture. We found that high density ECM causes a decrease in insulin signaling and adiponectin secretion, whereas the secretion of monocyte chemoattractant protein-1 (MCP-1) was increased via the activation of nuclear factor-kappaB (NF-kappaB). These results indicate that the density of the ECM directly regulates the inflammatory response and insulin sensitivity of adipocytes. CI - Copyright (c) 2010 Federation of European Biochemical Societies. Published by Elsevier B.V. All rights reserved. FAU - Li, Qinkai AU - Li Q AD - Clinical Research Center for Diabetes, Tokushima University Hospital, Tokushima, Japan. lqk@clin.med.tokushima-u.ac.jp FAU - Hata, Akiko AU - Hata A FAU - Kosugi, Chisato AU - Kosugi C FAU - Kataoka, Nananko AU - Kataoka N FAU - Funaki, Makoto AU - Funaki M LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20100915 PL - England TA - FEBS Lett JT - FEBS letters JID - 0155157 RN - 0 (Adiponectin) RN - 0 (Adipoq protein, mouse) RN - 0 (Ccl2 protein, mouse) RN - 0 (Chemokine CCL2) RN - 0 (Extracellular Matrix Proteins) RN - 0 (Insulin) RN - 0 (NF-kappa B) SB - IM MH - 3T3-L1 Cells MH - Adipocytes/*metabolism MH - Adiponectin/metabolism MH - Animals MH - Chemokine CCL2/metabolism MH - Extracellular Matrix Proteins/*metabolism MH - Inflammation/*metabolism MH - Insulin/*metabolism MH - Insulin Resistance MH - Mice MH - NF-kappa B/metabolism MH - Signal Transduction EDAT- 2010/09/02 06:00 MHDA- 2010/10/30 06:00 CRDT- 2010/09/01 06:00 PHST- 2010/08/03 00:00 [received] PHST- 2010/08/23 00:00 [revised] PHST- 2010/08/23 00:00 [accepted] PHST- 2010/09/01 06:00 [entrez] PHST- 2010/09/02 06:00 [pubmed] PHST- 2010/10/30 06:00 [medline] AID - S0014-5793(10)00695-2 [pii] AID - 10.1016/j.febslet.2010.08.033 [doi] PST - ppublish SO - FEBS Lett. 2010 Oct 8;584(19):4145-50. doi: 10.1016/j.febslet.2010.08.033. Epub 2010 Sep 15.