Manifestations and mechanisms of stem cell aging.

Manifestations and mechanisms of stem cell aging.
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DOI:
10.1083/jcb.201010131
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发表时间:
2011-04-18
期刊:
The Journal of cell biology
影响因子:
--
通讯作者:
Rando TA
Rando TA
中科院分区:
其他
文献类型:
--
作者:
Liu L;Rando TA

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成体干细胞存在于大多数哺乳动物器官和组织中,并且对于正常组织的稳态和修复是不可或缺的。在大多数组织中,存在与年龄相关的干细胞功能性下降,但干细胞并未耗尽。这些功能变化反映了年龄对基因组、表观基因组和蛋白质组的有害影响,其中一些是细胞自主产生的,另一些是由局部环境或系统环境中与年龄相关的变化引起的。值得注意的是,一些变化,特别是表观基因组学和蛋白质组学,是潜在可逆的,环境和遗传干预都可能导致衰老干细胞的再生。这些发现对基于干细胞的年龄相关疾病治疗具有深远的意义。
Adult stem cells exist in most mammalian organs and tissues and are indispensable for normal tissue homeostasis and repair. In most tissues, there is an age-related decline in stem cell functionality but not a depletion of stem cells. Such functional changes reflect deleterious effects of age on the genome, epigenome, and proteome, some of which arise cell autonomously and others of which are imposed by an age-related change in the local milieu or systemic environment. Notably, some of the changes, particularly epigenomic and proteomic, are potentially reversible, and both environmental and genetic interventions can result in the rejuvenation of aged stem cells. Such findings have profound implications for the stem cell–based therapy of age-related diseases.
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