Matrix metalloproteinase 2 improves the transplanted adipocyte survival in mice
| Autor: | Hiroyuki Unoki, Yasushi Saito, Yoshitaka Kubota, Meizi Jiang, Hideaki Bujo, Naoaki Rikihisa, D. Kuramochi, Akikazu Udagawa, Shinya Yoshimoto, Masaharu Ichinose |
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| Rok vydání: | 2008 |
| Předmět: |
Male
Vascular Endothelial Growth Factor A medicine.medical_specialty Cell Survival Clinical Biochemistry Basic fibroblast growth factor Gene Expression Adipose tissue Matrix metalloproteinase Biochemistry GM6001 Mice chemistry.chemical_compound 3T3-L1 Cells Adipocyte Internal medicine Adipocytes medicine Animals Autologous transplantation Protease Inhibitors RNA Small Interfering Reverse Transcriptase Polymerase Chain Reaction business.industry Dipeptides General Medicine Mice Inbred C57BL PPAR gamma Vascular endothelial growth factor Transplantation Glucose Endocrinology chemistry Matrix Metalloproteinase 2 Electrophoresis Polyacrylamide Gel Fibroblast Growth Factor 2 business |
| Zdroj: | European Journal of Clinical Investigation. 38:752-759 |
| ISSN: | 1365-2362 0014-2972 |
| DOI: | 10.1111/j.1365-2362.2008.02023.x |
| Popis: | Background Fat tissue is a common material for autologous transplantation in plastic and reconstructive surgery. Basic fibroblast growth factor (bFGF) ameliorates the fat graft survival. A transplantation model has shown the gene expression of matrix metalloproteinases (MMPs) to increase in adipocytes. The aim of this study is to investigate the role of MMPs in the amelioration of survival by bFGF. Materials and methods 3T3-L1 adipocytes were incubated with or without 10 µg mL−1 bFGF for 8 h in the presence or absence of the MMP inhibitor GM6001, vascular endothelial growth factor (VEGF), MMP-2 or anti-bFGF antibody to study the effect of bFGF on MMP-2 mRNA expression, MMP-2 activity, fat accumulation or 2-deoxyglucose uptake. Collagen sheets containing l × l07 adipocytes with or without bFGF in the presence or absence of GM6001 were subcutaneously transplanted into mice, and the appearance, histology, mRNA expression and fat accumulation of the grafts were analysed 4 weeks after transplantation. Results The MMP-2 expression was drastically induced by bFGF among MMPs in 3T3-L1 adipocytes. MMP-2 accelerated fat accumulation, peroxisome proliferator-activated receptor gamma (PPARγ) mRNA expression, and glucose uptake to an extent similar to those induced by bFGF, respectively. The bFGF-induced increases were inhibited by the blocking of MMP-2. The transplantation of adipocytes into mice showed that bFGF ameliorates the appearance and fat accumulation, as well as mRNA expression in grafts. These effects were almost or partly inhibited by a MMP blockade. Conclusions MMP-2 may be involved in the mechanism by which bFGF ameliorates the survival of fat grafts. |
| Databáze: | OpenAIRE |
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