PMID- 17010313 OWN - NLM STAT- MEDLINE DCOM- 20061204 LR - 20131121 IS - 0006-291X (Print) IS - 0006-291X (Linking) VI - 350 IP - 2 DP - 2006 Nov 17 TI - Increased matrix metalloproteinase-3 mRNA expression in visceral fat in mice implanted with cultured preadipocytes. PG - 392-8 AB - Using preadipocyte implantation methods, we recently demonstrated that adipocytes in the visceral area change their function, as the expression of tumor necrosis factor-alpha (TNF-alpha) increases, thereby causing insulin resistance. In order to clarify the mechanism for changes in the function of adipocytes in visceral area, we examined the mRNA expression profiles in visceral fat tissue specimens. Four weeks after cell implantation, we performed a microarray analysis using the RNA of fat tissue specimens implanted either with 3T3-L1 cells or PBS alone. Sixty-three genes were thus isolated and the expression of matrix metalloproteinase-3 (MMP-3) mRNA was found to dramatically increase in the fat tissue specimens. The neutralization of MMP-3 protein inhibited adipogenesis and the free fatty acid-induced TNF-alpha secretion in 3T3-L1 adipocytes. These results suggest a potential role of MMP-3, which promotes the TNF-alpha secretion, thus contributing to the disturbance of the functions in the adipocytes which accumulate in the visceral area. FAU - Unoki, Hiroyuki AU - Unoki H AD - Division of Applied Translational Research, Graduate School of Medicine, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba 260-8670, Japan. FAU - Bujo, Hideaki AU - Bujo H FAU - Shibasaki, Manabu AU - Shibasaki M FAU - Saito, Yasushi AU - Saito Y LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20060920 PL - United States TA - Biochem Biophys Res Commun JT - Biochemical and biophysical research communications JID - 0372516 RN - 0 (Fatty Acids, Nonesterified) RN - 0 (Matrix Metalloproteinase Inhibitors) RN - 0 (RNA, Messenger) RN - 0 (Tumor Necrosis Factor-alpha) RN - EC 3.4.24.17 (Matrix Metalloproteinase 3) RN - IY9XDZ35W2 (Glucose) SB - IM MH - 3T3-L1 Cells MH - Adipocytes/cytology/*enzymology/metabolism MH - Animals MH - Cell Differentiation MH - Disease Models, Animal MH - Fatty Acids, Nonesterified/pharmacology MH - Gene Expression Regulation MH - Glucose/pharmacology MH - Insulin Resistance MH - Intra-Abdominal Fat/*enzymology/metabolism MH - Male MH - Matrix Metalloproteinase 3/*biosynthesis/genetics MH - Matrix Metalloproteinase Inhibitors MH - Mice MH - Mice, Nude MH - Obesity/enzymology MH - RNA, Messenger/biosynthesis MH - Stem Cell Transplantation MH - Tumor Necrosis Factor-alpha/metabolism EDAT- 2006/10/03 09:00 MHDA- 2006/12/09 09:00 CRDT- 2006/10/03 09:00 PHST- 2006/09/11 00:00 [received] PHST- 2006/09/12 00:00 [accepted] PHST- 2006/10/03 09:00 [pubmed] PHST- 2006/12/09 09:00 [medline] PHST- 2006/10/03 09:00 [entrez] AID - S0006-291X(06)02079-1 [pii] AID - 10.1016/j.bbrc.2006.09.054 [doi] PST - ppublish SO - Biochem Biophys Res Commun. 2006 Nov 17;350(2):392-8. doi: 10.1016/j.bbrc.2006.09.054. Epub 2006 Sep 20.