Polycomb group proteins are key regulators of keratinocyte function.

Polycomb group proteins are key regulators of keratinocyte function.
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DOI:
10.1038/jid.2010.318
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发表时间:
2011-02
期刊:
The Journal of investigative dermatology
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其他
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Polycomb group(PcG)蛋白是基因表达的表观遗传抑制因子,通过修饰组蛋白来改变染色质结构,调节基因表达和细胞行为。最近的研究表明,PcG蛋白在表皮中表达,其水平在分化过程中和疾病状态下发生变化,并且PcG的表达受到影响细胞增殖和存活的因素的调节。结果表明,PcG蛋白调控角质形成细胞的细胞周期进程、细胞凋亡、衰老和分化。这些蛋白在前体细胞、基底层和基底层角质形成细胞中都有表达,表达的水平、时间和分布表明,PcG蛋白在维持多个表皮区的细胞存活和死亡之间的平衡中起着核心作用。其他研究表明,这在皮肤癌的进展中起着重要作用。
The Polycomb group (PcG) proteins are epigenetic suppressors of gene expression that function through modification of histones to change chromatin structure and modulate gene expression and cell behavior. Recent studies show that PcG proteins are expressed in epidermis, that their levels change during differentiation and in disease states, and that PcG expression is regulated by agents that influence cell proliferation and survival. The results indicate that PcG proteins regulate keratinocyte cell-cycle progression, apoptosis, senescence, and differentiation. These proteins are expressed in progenitor cells, in the basal layer, and in suprabasal keratinocytes, and the level, timing, and distribution of expression suggest that the PcG proteins have a central role in maintaining the balance between cell survival and death in multiple epidermal compartments. Additional studies indicate an important role in skin cancer progression.
皮肤癌中的 Bmi-1 多聚肌群基因:(-)-表没食子儿茶素-3-棓酸盐对功能的调节。
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