Stem cells and aberrant signaling of molecular systems in skin aging

Stem cells and aberrant signaling of molecular systems in skin aging
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皮肤衰老中的干细胞和分子系统的异常信号传导

DOI:
10.1016/j.arr.2014.10.006
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发表时间:
2015-01
期刊:
Ageing Res Rev
影响因子:
--
通讯作者:
Cheng B
Cheng B
中科院分区:
其他
文献类型:
--
作者:
Xuan M;Peng Y;Victor Y.L. Leung;Cheng B

文献摘要

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皮肤是人体最大的器官,它能够在人的一生中自我修复。随着年龄的增长,皮肤容易因损伤而退化。虽然整容手术已被广泛采用,以恢复皮肤,我们远远没有一个明确的认识机制负责皮肤老化。最近,成人皮肤驻留干细胞/祖细胞、生长停滞、衰老或凋亡死亡以及由关键信号基因(例如Ras/Raf/MEK/ERK、PI 3 K/Akt激酶、Wnt、p21和p53)的改变引起的功能障碍已被证明在皮肤再生中发挥着至关重要的作用。同时,增强的端粒磨损、激素耗竭、氧化应激、遗传事件和紫外线辐射暴露导致严重的DNA损伤、基因组不稳定性和表观遗传突变也有助于皮肤老化。因此,细胞替代和靶向皮肤中发现的分子系统对于控制甚至治愈皮肤老化具有很大的希望。
The skin is the body's largest organ and it is able to self-repair throughout an individual's life. With advanced age, skin is prone to degenerate in response to damage. Although cosmetic surgery has been widely adopted to rejuvinate skin, we are far from a clear understanding of the mechanisms responsible for skin aging. Recently, adult skin-resident stem/progenitor cells, growth arrest, senescence or apoptotic death and dysfunction caused by alterations in key signaling genes, such as Ras/Raf/MEK/ERK, PI3K/Akt-kinases, Wnt, p21 and p53, have been shown to play a vital role in skin regeneration. Simultaneously, enhanced telomere attrition, hormone exhaustion, oxidative stress, genetic events and ultraviolet radiation exposure that result in severe DNA damage, genomic instability and epigenetic mutations also contribute to skin aging. Therefore, cell replacement and targeting of the molecular systems found in skin hold great promise for controlling or even curing skin aging.
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