New activators and inhibitors in the hair cycle clock: targeting stem cells' state of competence.

New activators and inhibitors in the hair cycle clock: targeting stem cells' state of competence.
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DOI:
10.1038/jid.2012.38
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发表时间:
2012-05
影响因子:
6.5
通讯作者:
Plikus, Maksim V.
Plikus, Maksim V.
中科院分区:
医学1区
文献类型:
--
作者:
Plikus, Maksim V.

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头发周期的定时机制仍然知之甚少。然而,越来越清楚的是,休止期到生长期的转变至少由骨形态发生蛋白(BMP)、WNT、成纤维细胞生长因子(FGF)和转化生长因子(TGF)-β信号传导途径共同控制。新的研究表明,毛囊干细胞中的Fgf 18信号通路协同BMP介导的毛囊生长活性,而Tgf-β2信号通路抵消它。Fgf 18信号通路的缺失显著加速毛发生长期的开始,而Tgf-β2信号通路的缺失显著延迟毛发生长期的开始,支持这些通路在毛发周期计时中的关键作用。
The timing mechanism of the hair cycle remains poorly understood. However, it has become increasingly clear that the telogen-to-anagen transition is controlled jointly by at least the bone morphogenic protein (BMP), WNT, fibroblast growth factor (FGF), and transforming growth factor (TGF)-β signaling pathways. New research shows that Fgf18 signaling in hair follicle stem cells synergizes BMP-mediated refractivity, whereas Tgf-β2 signaling counterbalances it. Loss of Fgf18 signaling markedly accelerates anagen initiation, whereas loss of Tgf-β2 signaling significantly delays it, supporting key roles for these pathways in hair cycle timekeeping.
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