Aging epidermis is maintained by changes in transit-amplifying cell kinetics, not stem cell kinetics.

Aging epidermis is maintained by changes in transit-amplifying cell kinetics, not stem cell kinetics.
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表皮老化是通过转运放大细胞动力学的变化来维持的,而不是干细胞动力学的变化。

DOI:
10.1038/jid.2009.236
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发表时间:
2009
期刊:
The Journal of investigative dermatology
影响因子:
--
通讯作者:
Bickenbach,JackieR
Bickenbach,JackieR
中科院分区:
--
文献类型:
--
作者:
Winter,MichaelC;Bickenbach,JackieR

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人们一直认为,衰老表皮愈合速度缓慢是由于表皮干细胞增殖速度减慢。在这一期中,Charruyeret . al.报告说,情况可能并非如此。通过长期再生模型,他们证明表皮干细胞动力学得以维持。相反,它是过渡扩增(TA)细胞的代偿作用,在老化的皮肤中发生变化,因此承担了伤口愈合缓慢的责任。
It has been assumed that the slow rate of healing in aging epidermis is due to slowing of the epidermal stem cell proliferative rate. In this issue, Charruyeret al.report that this may not be the case. Using a long-term repopulating model, they demonstrate that epidermal stem cell kinetics are maintained. Instead, it is the compensatory action of the transit-amplifying (TA) cells that changes in aging skin and thus bears responsibility for slowed wound healing.
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