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- 2017
银杏叶提取物对成骨细胞分化的影响及相关机制研究
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Abstract:
摘要 目的:探讨银杏叶提取物(ginkgo biloba extract,GBE)对成骨细胞分化的影响及其可能的相关分子机制。方法:将不同浓度的GBE作用于MG63,通过茜素红染色及碱性磷酸酶(ALP)活性检测判定其对细胞成骨分化能力的影响。RT-PCR检测Runx2(runt-related transcription factor 2)、一型胶原蛋白(COL1A1)、骨钙素(Osteocalcin,OC) 及细胞周期蛋白D1(cyclinD1)的表达,Western Blot检测细胞核蛋白β-catenin及cyclinD1的表达。结果:不同浓度的GBE能提高ALP活性及钙结节数量,在浓度为75 mg/L时最为显著;此外,GBE能显著提高Runx2、COL1A1、OC、cyclinD1的mRNA表达及cyclinD1的蛋白表达,同时促进β-catenin蛋白的核内转移;而上述活性均能被DKK1所抑制。结论:银杏叶提取物对成骨细胞的分化具有积极意义,其机制可能与经典Wnt通路的激活有关
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