Redressing the interactions between stem cells and immune system in tissue regeneration.

Redressing the interactions between stem cells and immune system in tissue regeneration.
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纠正组织再生中干细胞和免疫系统之间的相互作用

DOI:
10.1186/s13062-021-00306-6
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发表时间:
2021-10-20
期刊:
影响因子:
5.5
通讯作者:
Shi Y
Shi Y
中科院分区:
生物学2区
文献类型:
--
作者:
Fang J;Feng C;Chen W;Hou P;Liu Z;Zuo M;Han Y;Xu C;Melino G;Verkhratsky A;Wang Y;Shao C;Shi Y

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骨骼肌具有非凡的再生能力,反映了肌肉干细胞(MuSCs)的快速激活和有效分化。在肌肉再生过程中,musc被免疫细胞重新编程。反过来,musc赋予免疫细胞抗炎特性,以解决炎症和促进组织修复。事实上,基于其免疫调节能力,包括干扰素-γ (IFN-γ)和肿瘤坏死因子-α (TNF-α)引发的作用,musc可以对各种退行性和炎症性疾病发挥治疗作用。在分子水平上,吲哚胺2,3-双加氧酶(IDO)产生的色氨酸代谢物犬尿氨酸或犬尿酸通过激活芳烃受体(AHR)增强tnf刺激基因6 (TSG6)的表达。此外,由MuSCs产生的胰岛素生长因子2 (IGF2)可以赋予成熟巨噬细胞氧化磷酸化(OXPHOS)依赖的抗炎功能。在此,我们总结了目前对musc免疫调节特性的理解以及与musc在包括COVID-19在内的病理条件下的潜在应用相关的问题。
Skeletal muscle has an extraordinary regenerative capacity reflecting the rapid activation and effective differentiation of muscle stem cells (MuSCs). In the course of muscle regeneration, MuSCs are reprogrammed by immune cells. In turn, MuSCs confer immune cells anti-inflammatory properties to resolve inflammation and facilitate tissue repair. Indeed, MuSCs can exert therapeutic effects on various degenerative and inflammatory disorders based on their immunoregulatory ability, including effects primed by interferon-γ (IFN-γ) and tumor necrosis factor-α (TNF-α). At the molecular level, the tryptophan metabolites, kynurenine or kynurenic acid, produced by indoleamine 2,3-dioxygenase (IDO), augment the expression of TNF-stimulated gene 6 (TSG6) through the activation of the aryl hydrocarbon receptor (AHR). In addition, insulin growth factor 2 (IGF2) produced by MuSCs can endow maturing macrophages oxidative phosphorylation (OXPHOS)-dependent anti-inflammatory functions. Herein, we summarize the current understanding of the immunomodulatory characteristics of MuSCs and the issues related to their potential applications in pathological conditions, including COVID-19.
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