Corticosterone inhibits GAS6 to govern hair follicle stem-cell quiescence.

Corticosterone inhibits GAS6 to govern hair follicle stem-cell quiescence.
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DOI:
10.1038/s41586-021-03417-2
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发表时间:
2021-04
期刊:
影响因子:
64.8
通讯作者:
Hsu YC
Hsu YC
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Choi S;Zhang B;Ma S;Gonzalez-Celeiro M;Stein D;Jin X;Kim ST;Kang YL;Besnard A;Rezza A;Grisanti L;Buenrostro JD;Rendl M;Nahrendorf M;Sahay A;Hsu YC

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长期持续暴露于压力源可以深刻地影响组织的稳态,尽管这些变化发生的机制在很大程度上是未知的。在这里,我们报告肾上腺衍生的应激激素皮质酮(相当于皮质醇的啮齿动物)调节小鼠毛囊干细胞(HFSC)的静止和毛发生长。没有全身皮质酮,HFSC在整个生命过程中进入更多轮的再生周期。相反,在慢性应激下,皮质酮水平升高延长HFSC静止期,并使毛囊处于延长的休息期。从机制上讲,皮质酮作用于毛乳头(DP),以抑制分泌因子生长停滞特异性6(Gas 6)的表达。恢复Gas6表达克服了HFSC活化和毛发生长的应激诱导的抑制。我们的工作通过其对生态位的影响将皮质酮确定为HFSC活性的系统性抑制剂,并证明去除这种抑制可驱动HFSC进入频繁的再生周期,长期没有可观察到的缺陷。
Chronic, sustained exposure to stressors can profoundly impact tissue homeostasis, although the mechanisms by which these changes occur are largely unknown. Here, we report the adrenal gland-derived stress hormone corticosterone (the rodent equivalent of cortisol) regulates hair follicle stem cell (HFSC) quiescence and hair growth in mice. Without systemic corticosterone, HFSCs enter substantially more rounds of the regeneration cycle throughout life. Conversely, under chronic stress, elevated corticosterone levels prolong HFSC quiescence and keep hair follicles in an extended resting phase. Mechanistically, corticosterone acts on dermal papilla (DP) to suppress the expression of a secreted factor, Growth Arrest Specific 6 (Gas6). Restoring Gas6 expression overcomes stress-induced inhibition of HFSC activation and hair growth. Our work identifies corticosterone as a systemic inhibitor of HFSC activity via its impact on the niche, and demonstrates that removal of such inhibition drives HFSCs into frequent regeneration cycles with no observable defects long-term.
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