Glucocorticoid signaling and regulatory T cells cooperate to maintain the hair-follicle stem-cell niche.

Glucocorticoid signaling and regulatory T cells cooperate to maintain the hair-follicle stem-cell niche.
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糖皮质激素信号和调节性T细胞共同维持毛囊干细胞的生态位。

DOI:
10.1038/s41590-022-01244-9
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发表时间:
2022-07
期刊:
影响因子:
30.5
通讯作者:
Zheng, Ye
Zheng, Ye
中科院分区:
医学1区
文献类型:
--
作者:
Liu, Zhi;Hu, Xianting;Liang, Yuqiong;Yu, Jingting;Li, Huabin;Shokhirev, Maxim N.;Zheng, Ye

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组织稳态的维持依赖于同一小生境中干细胞和支持细胞之间的通讯。调节性T细胞(Treg)是干细胞生态位的关键组成部分,以支持其分化。Treg细胞如何感知该微环境中的动态信号并与干细胞通讯大多尚不清楚。在这里,通过使用毛囊(HF)研究Treg干细胞串扰,我们表明类固醇激素糖皮质激素指示皮肤驻留Treg细胞促进HF干细胞(HFSC)激活和HF再生。Treg细胞中糖皮质激素受体(GR)的消融阻断毛发再生而不影响免疫稳态。在机制上,GR和Foxp 3在Treg细胞中协同诱导TGF-β3,TGF-β3激活HFSC中的Smad 2/3并促进HFSC增殖。这项研究确定了由GR/TGF-β3轴介导的Treg细胞和HFSC之间的串扰,突出了操纵Treg细胞以支持组织再生的可能方法。
Maintenance of tissue homeostasis is dependent on the communication between stem cells and supporting cells in the same niche. Regulatory T cells (Treg) are a critical component of the stem cell niche to support their differentiation. How Treg cells sense dynamic signals in this microenvironment and communicate with stem cells is mostly unknown. Here, by using hair follicles (HF) to study Treg-stem cell crosstalk, we show that the steroid hormone glucocorticoid instructs skin-resident Treg cells to facilitate HF stem cell (HFSC) activation and HF regeneration. Ablation of the glucocorticoid receptor (GR) in Treg cells blocks hair regeneration without affecting immune homeostasis. Mechanistically, GR and Foxp3 cooperate in Treg cells to induce TGF-β3, which activates Smad2/3 in HFSCs and facilitates HFSC proliferation. This study identifies crosstalk between Treg cells and HFSCs mediated by the GR/TGF-β3 axis, highlighting a possible means to manipulate Treg cells to support tissue regeneration.
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