食品科学

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白藜芦醇通过降低LYRM1 mRNA表达抑制3T3-L1前脂肪细胞增殖

张 翔,黎文明,钟贤武,郑 琳,李明慧,冯 翔   

  1. 广东省营养膳食与健康重点实验室,中山大学公共卫生学院,广东 广州 510080
  • 出版日期:2014-07-15 发布日期:2014-07-18

Suppressive Effect of Resveratrol on 3T3-L1 Preadipocyte Proliferation by Reducing LYRM1 mRNA Expression

ZHANG Xiang, LI Wen-ming, ZHONG Xian-wu, ZHENG Lin, LI Ming-hui, FENG Xiang   

  1. Guangdong Provincial Key Laboratory of Food, Nutrition and Health, School of Public Health, Sun Yat-Sen University,
    Guangzhou 510080, China
  • Online:2014-07-15 Published:2014-07-18

摘要:

目的:观察白藜芦醇(resveratrol,Res)对3T3-L1前脂肪细胞增殖活性的影响,并探讨其机制。方法:对3T3-L1前脂肪细胞进行培养,分别设置对照组以及25、50、75、100 μmol/L的Res干预组,噻唑蓝比色法观察不同剂量干预对细胞增殖活性的影响;实时荧光定量聚合酶链反应检测细胞中LYR Motif containing 1(LYRM1)基因mRNA的表达情况;Western blotting实验检测细胞中促凋亡蛋白Bak和抑凋亡蛋白Bcl-2的表达水平。结果:Res干预可使3T3-L1前脂肪细胞增殖活性降低;细胞中LYRM1 mRNA水平降低,Bak蛋白表达含量升高,Bcl-2蛋白表达含量降低,均具有剂量依赖效应。结论:Res可以抑制3T3-L1前脂肪细胞增殖,这可能与Res降低细胞内LYRM1 mRNA表达,影响线粒体功能并启动凋亡程序有关。

关键词: 白藜芦醇, 3T3-L1前脂肪细胞, 细胞增殖, LYRM1, Bcl-2家族

Abstract:

Purpose: To investigate the effect of resveratrol (Res) on proliferation of 3T3-L1 preadipocyte and its potential
molecular mechanisms. Methods: 3T3-L1 preadipocytes were plated in plastic dishes and treated with or without indicated
levels of Res (25, 50, 75, and 100 μmol/L). Cell toxicity of different doses of Res was assayed by MTT test. The mRNA
expression of LYRM1 was determined by real time polymerase chain reaction (RT-PCR), and the expressions of proapoptotic
protein Bak and anti-apoptotic protein Bcl-2 were confirmed by Western blot. Results: Res treatments dosedependently
suppressed the proliferation potential of preadipocyte, via reduced expression of LYRM1 mRNA, increased
Bak protein expression and decreased Bal-2 protein expression. Conclusion: Res treatments suppressed 3T3-L1 preadipocyte
proliferation, which may be associated with reduced LYRM1 expression and then mitochondrial dysfunction, finally leading
to progressive apoptotic process.

Key words: resveratrol, 3T3-L1 preadipocyte, proliferation, LYRM1, Bcl-2 family