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KMID : 1239920120060060499
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Nutrition Research and Practice
2012 Volume.6 No. 6 p.499 ~ p.504
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Resveratrol inhibits the protein expression of transcription factors related adipocyte differentiation and the activity of matrix metalloproteinase in mouse fibroblast 3T3-L1 preadipocytes
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Kang Nam-E
Ha Ae-Wha
Kim Ji-Young
Kim Woo-Kyoung
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Abstract
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This study attempted to investigate the effects of resveratrol on the differentiation of adipocytes. After cells were treated with various concentrations of resveratrol (0, 10, 20, and 40 μmol/L), adipocyte proliferation, the protein expression of transcription factors, and MMPs' activities were determined. Cell proliferation was inhibited more within 4 days of incubation (P < 0.05), and lipid accumulation in adipocyte was significantly inhibited by 93.8%, 92.4% and 91.5%, respectively, after two days of 10, 20, and 40 μmol/L resveratrol treatment (P < 0.05). Six days of incubation with the three resveratrol concentrations caused a significantly decreases of 63%, 59.9%, and 25.1% GPDH activity as a dose-dependent response. The triglyceride concentration also decreased significantly with the increase of resveratrol concentration (P < 0.05). The protein expression of CCAAT/enhancer-binding protein (C/EBPβ) was decreased significantly by 56% and 30% while PPARγ was significantly reduced by 57% and 15% with resveratrol treatments of 20 and 40 μmol/L, respectively (P < 0.05). The protein expression of C/EBPα was decreased by 83%, 74%, and 38% to increased dosage levels, with significance determined for this decrease from 20 μmol/L of resveratrol. The protein expression of fatty acid binding protein (FABP4) was decreased significantly by 88%, 72%, and 46% with the increase of resveratrol concentration. The activity of MMP-2 was decreased significantly by 84%, 70%, and 63% while MMP-9 activity was decreased significantly by 74%, 62%, and 39% with the increased resveratrol concentrations of 10, 20, and 40 μmol/L, respectively (P < 0.05).
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KEYWORD
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Adipocyte, resveratrol, transcription factor, matrix metalloproteinase, differentiation
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