ZFP91 is required for the maintenance of regulatory T cell homeostasis and function.

ZFP91 is required for the maintenance of regulatory T cell homeostasis and function.
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ZFP91 是维持调节性 T 细胞稳态和功能所必需的

DOI:
10.1084/jem.20201217
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发表时间:
2021-02-01
期刊:
The Journal of experimental medicine
影响因子:
--
通讯作者:
Zou Q
Zou Q
中科院分区:
其他
文献类型:
--
作者:
Wang A;Ding L;Wu Z;Ding R;Teng XL;Wang F;Hu Z;Chen L;Yu X;Zou Q

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T-reg细胞自噬启动的机制尚不清楚。Wang等人。确定ZFP91依赖的机制,促进TCR启动的自噬小体成熟,以限制高糖酵解,维持T reg细胞的动态平衡和功能。自噬对调节性T(T Reg)细胞的代谢和功能适应性进行编程,以建立免疫耐受,但T reg细胞自噬启动的机制尚不清楚。在这里,我们表明,E3泛素连接酶ZFP91促进自噬激活,以维持T reg细胞的代谢编程和功能完整性。Zfp91的T-reg细胞特异性缺失导致T-reg细胞功能障碍,并加剧结肠炎和炎症驱动的结肠癌的发生。TCR触发的自噬诱导在很大程度上依赖于T reg细胞来源的ZFP91来限制高糖酵解,这是维持T reg细胞动态平衡所必需的。机制上,ZFP91在TCR刺激下迅速从胞核转运到胞浆,然后介导BECN1泛素化,促进BECN1-PIK3C3复合体的形成。因此,我们的结果强调了ZFP91依赖的机制,促进TCR启动的自噬小体成熟,以维持T reg细胞的动态平衡和功能。
The mechanisms governing autophagy initiation in T reg cells remain unclear. Wang et al. identify a ZFP91-dependent mechanism promoting TCR-initiated autophagosome maturation to restrict hyperglycolysis and maintain T reg cell homeostasis and function. Autophagy programs the metabolic and functional fitness of regulatory T (T reg) cells to establish immune tolerance, yet the mechanisms governing autophagy initiation in T reg cells remain unclear. Here, we show that the E3 ubiquitin ligase ZFP91 facilitates autophagy activation to sustain T reg cell metabolic programming and functional integrity. T reg cell–specific deletion of Zfp91 caused T reg cell dysfunction and exacerbated colonic inflammation and inflammation-driven colon carcinogenesis. TCR-triggered autophagy induction largely relied on T reg cell–derived ZFP91 to restrict hyperglycolysis, which is required for the maintenance of T reg cell homeostasis. Mechanistically, ZFP91 rapidly translocated from the nucleus to the cytoplasm in response to TCR stimulation and then mediated BECN1 ubiquitination to promote BECN1–PIK3C3 complex formation. Therefore, our results highlight a ZFP91-dependent mechanism promoting TCR-initiated autophagosome maturation to maintain T reg cell homeostasis and function.
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