Unipotent, Atoh1+ progenitors maintain the Merkel cell population in embryonic and adult mice.
Unipotent, Atoh1+ progenitors maintain the Merkel cell population in embryonic and adult mice.
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DOI:
10.1083/jcb.201407101
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发表时间:
2015-02-02
期刊:
影响因子:
--
通讯作者:
Maricich SM
中科院分区:
文献类型:
--
作者:
Wright MC;Reed-Geaghan EG;Bolock AM;Fujiyama T;Hoshino M;Maricich SM
A novel, unipotent progenitor population in the skin characterized by Atoh1 expression gives rise to Merkel cells both during development and adulthood. Resident progenitor cells in mammalian skin generate new cells as a part of tissue homeostasis. We sought to identify the progenitors of Merkel cells, a unique skin cell type that plays critical roles in mechanosensation. We found that some Atoh1-expressing cells in the hairy skin and whisker follicles are mitotically active at embryonic and postnatal ages. Genetic fate-mapping revealed that these Atoh1-expressing cells give rise solely to Merkel cells. Furthermore, selective ablation of Atoh1+ skin cells in adult mice led to a permanent reduction in Merkel cell numbers, demonstrating that other stem cell populations are incapable of producing Merkel cells. These data identify a novel, unipotent progenitor population in the skin that gives rise to Merkel cells both during development and adulthood.
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