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绿茶中多酚类化合物表儿茶素-3-酸酯(EGCG)通过诱导细胞凋亡起到化学防癌作用,且其能通过上调p57/KIP2加速正常人表皮角质细胞(NHEK)分化。p57/KIP2是一种能阻止细胞生长和分化的细胞周期蛋白依赖性激酶抑制蛋白,半胱天冬酶(caspase)14与NHEK分化和屏障形成等有关。因此作
The epigallocatechin-3-caprate (EGCG), a polyphenolic compound in green tea, has a chemical anti-cancer effect by inducing apoptosis, and it can accelerate normal human epidermal keratinocyte (NHEK) differentiation by up-regulating p57/KIP2. . P57/KIP2 is a cyclin-dependent kinase inhibitor that prevents cell growth and differentiation, and caspase 14 is involved in differentiation and barrier formation of NHEK. Therefore,