A binary module for microbiota-mediated regulation of γδ17 cells, hallmarked by microbiota-driven expression of programmed cell death protein 1.

A binary module for microbiota-mediated regulation of γδ17 cells, hallmarked by microbiota-driven expression of programmed cell death protein 1.
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DOI:
10.1016/j.celrep.2023.112951
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发表时间:
2023-08-29
期刊:
影响因子:
8.8
通讯作者:
--
中科院分区:
生物学1区
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--
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关于微生物群如何调节先天性 γδ T 细胞,或者这些细胞如何限制其在微生物群提供慢性刺激的粘膜屏障内的效应器功能,人们知之甚少。在这里,我们表明微生物群介导的 γδ17 细胞调节是二元的,其中微生物群指导原位白细胞介素 17 (IL-17) 的产生以及抑制性受体程序性细胞死亡蛋白 1 (PD-1) 的伴随表达。微生物群驱动的 PD-1 和 IL-17 表达以及优先采用 PD-1 高表型对于跨多个粘膜屏障的 γδ17 细胞来说是保守的。重要的是,微生物群驱动的 PD-1 通过粘膜驻留的 γδ17 效应子抑制原位 IL-17 的产生,将微生物群与其同时激活和抑制联系起来。我们进一步展示了这种微生物群驱动模块的动态性质,并定义了以增强的 PD-1、IL-17 和脂质摄取为标志的 γδ17 细胞的炎症相关激活状态,从而将微生物群与动态子集特异性激活和代谢重塑联系起来,以支持微生物群密集的组织环境中的 γδ17 效应器功能。黄等人。研究表明,微生物群指导 γδ17 细胞表达 PD-1 和 IL-17,建立了前者抑制后者的二元模块。该模块以及 γδ17 细胞的脂质摄取得到增强,以支持原位 γδ17 对组织炎症的反应。
Little is known about how microbiota regulate innate-like γδ T cells or how these restrict their effector functions within mucosal barriers, where microbiota provide chronic stimulation. Here, we show that microbiota-mediated regulation of γδ17 cells is binary, where microbiota instruct in situ interleukin-17 (IL-17) production and concomitant expression of the inhibitory receptor programmed cell death protein 1 (PD-1). Microbiota-driven expression of PD-1 and IL-17 and preferential adoption of a PD-1high phenotype are conserved for γδ17 cells across multiple mucosal barriers. Importantly, microbiota-driven PD-1 inhibits in situ IL-17 production by mucosa-resident γδ17 effectors, linking microbiota to their simultaneous activation and suppression. We further show the dynamic nature of this microbiota-driven module and define an inflammation-associated activation state for γδ17 cells marked by augmented PD-1, IL-17, and lipid uptake, thus linking the microbiota to dynamic subset-specific activation and metabolic remodeling to support γδ17 effector functions in a microbiota-dense tissue environment. Huang et al. show that microbiota instruct γδ17 cells to express PD-1 and IL-17, establishing a binary module where the former inhibits the latter. This module, and lipid uptake by γδ17 cells, is augmented to support in situ γδ17 responses to tissue inflammation.
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