PMID- 19608218 OWN - NLM STAT- MEDLINE DCOM- 20100218 LR - 20121115 IS - 1879-2472 (Electronic) IS - 0049-3848 (Linking) VI - 124 IP - 5 DP - 2009 Nov TI - Effect of tissue inhibitor of matrix metalloproteinases-1 on in vitro and in vivo adipocyte differentiation. PG - 578-83 LID - 10.1016/j.thromres.2009.06.020 [doi] AB - Matrix metalloproteinases (MMPs) and their tissue inhibitors (TIMPs) play a role in development of obesity by contributing to adipogenesis, angiogenesis and extracellular matrix degradation. We have evaluated a potential functional role of TIMP-1, which inhibits most MMPs, in early stages of in vitro and in vivo adipogenesis. Overexpression of human TIMP-1 (hTIMP-1) in 3T3-F442A preadipocytes resulted in a somewhat slower differentiation into mature adipocytes, without affecting the total extent of differentiation. Local overexpression by injection of 3T3-F442A preadipocytes expressing hTIMP-1 in the back of NUDE mice kept on high fat diet (HFD) for 4 weeks, had no effect on de novo formed fat pad mass. The fat pads formed from the hTIMP-1 expressing cells did show a significantly larger blood vessel size as compared to control cells (57 + or - 4.8 microm(2) vs 38 + or - 1.4 microm(2), p=0.0017). No effect was observed on blood vessel density or on adipocyte size or density. Thus, local hTIMP-1 overexpression did not significantly affect early stages of adipogenesis as evaluated from the extent of in vitro adipocyte differentiation or of in vivo de novo adipose tissue formation. FAU - Scroyen, Ilse AU - Scroyen I AD - Center for Molecular and Vascular Biology, KU Leuven, Leuven, Belgium. FAU - Cosemans, Leentje AU - Cosemans L FAU - Lijnen, H Roger AU - Lijnen HR LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20090716 PL - United States TA - Thromb Res JT - Thrombosis research JID - 0326377 RN - 0 (Matrix Metalloproteinase Inhibitors) RN - 0 (Tissue Inhibitor of Metalloproteinase-1) RN - EC 3.4.24.24 (Matrix Metalloproteinase 2) RN - EC 3.4.24.35 (Matrix Metalloproteinase 9) SB - IM MH - 3T3 Cells MH - Adipocytes/*cytology/enzymology/*metabolism MH - Adipogenesis/drug effects/genetics MH - Animals MH - Cell Differentiation/physiology MH - Humans MH - Male MH - Matrix Metalloproteinase 2/metabolism MH - Matrix Metalloproteinase 9/metabolism MH - Matrix Metalloproteinase Inhibitors MH - Mice MH - Mice, Inbred BALB C MH - Mice, Nude MH - Reverse Transcriptase Polymerase Chain Reaction MH - Tissue Inhibitor of Metalloproteinase-1/*biosynthesis/genetics MH - Transfection EDAT- 2009/07/18 09:00 MHDA- 2010/02/19 06:00 CRDT- 2009/07/18 09:00 PHST- 2009/04/01 00:00 [received] PHST- 2009/06/16 00:00 [revised] PHST- 2009/06/19 00:00 [accepted] PHST- 2009/07/18 09:00 [entrez] PHST- 2009/07/18 09:00 [pubmed] PHST- 2010/02/19 06:00 [medline] AID - S0049-3848(09)00306-5 [pii] AID - 10.1016/j.thromres.2009.06.020 [doi] PST - ppublish SO - Thromb Res. 2009 Nov;124(5):578-83. doi: 10.1016/j.thromres.2009.06.020. Epub 2009 Jul 16.