Coexistence of quiescent and active adult stem cells in mammals.

Coexistence of quiescent and active adult stem cells in mammals.
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DOI:
10.1126/science.1180794
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发表时间:
2010-01-29
期刊:
Science (New York, N.Y.)
影响因子:
--
通讯作者:
Clevers H
Clevers H
中科院分区:
其他
文献类型:
--
作者:
Li L;Clevers H

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成体干细胞对于损伤后的生理组织更新和再生至关重要。流行的模型假设存在单个静止的干细胞群体,其驻留在给定组织的特定小生境中。新出现的证据表明,静止(细胞周期外,处于较低的代谢状态)和活跃(细胞周期中,不能保留DNA标记)的干细胞亚群可能共存于几个组织中,在不同的但相邻的位置。在这里,我们总结了这些发现,并提出,静止和活跃的干细胞群体有单独的,但合作的功能作用。
Adult stem cells are crucial for physiological tissue renewal and regeneration after injury. Prevailing models assume the existence of a single quiescent population of stem cells residing in a specialized niche of a given tissue. Emerging evidence indicates that both quiescent (out of cell cycle and in a lower metabolic state) and active (in cell cycle and not able to retain DNA labels) stem cell subpopulations may coexist in several tissues, in separate yet adjoining locations. Here, we summarize these findings and propose that quiescent and active stem cell populations have separate but cooperative functional roles.
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