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首页> 外文期刊>Cell metabolism >Microbiota-Derived Metabolites Suppress Arthritis by Amplifying Aryl-Hydrocarbon Receptor Activation in Regulatory B Cells
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Microbiota-Derived Metabolites Suppress Arthritis by Amplifying Aryl-Hydrocarbon Receptor Activation in Regulatory B Cells

机译:微生物群衍生的代谢物通过扩增调节B细胞中的芳基 - 烃受体活化来抑制关节炎

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摘要

The differentiation of IL-10-producing regulatory B cells (Bregs) in response to gut-microbiota-derived signals supports the maintenance of tolerance. However, whether microbiota-derived metabolites can modulate Breg suppressive function remains unknown. Here, we demonstrate that rheumatoid arthritis (RA) patients and arthritic mice have a reduction in microbial-derived short-chain fatty acids (SCFAs) compared to healthy controls and that in mice, supplementation with the SCFA butyrate reduces arthritis severity. Butyrate supplementation suppresses arthritis in a Breg-dependent manner by increasing the level of the serotonin-derived metabolite 5-Hydroxyindole-3-acetic acid (5-HIAA), which activates the aryl-hydrocarbon receptor (AhR), a newly discovered transcriptional markerfor Breg function. Thus, butyrate supplementation via AhR activation controls a molecular program that supports Breg function while inhibiting germinal center (GC) B cell and plasmablast differentiation. Our study demonstrates that butyrate supplementation may serve as a viable therapy for the amelioration of systemic autoimmune disorders.
机译:响应于肠道微生物群系的信号的IL-10产生调节B细胞(BREG)的分化支持维持公差。但是,是否可以调节微生物群衍生的代谢物可以调节BREG抑制功能​​仍然未知。在这里,我们证明了与健康对照相比,类风湿性关节炎(RA)患者和关节炎小鼠的微生物衍生的短链脂肪酸(SCFA)降低​​了微生物衍生的短链脂肪酸(SCFA),并且在小鼠中,用SCFA丁酸盐的补充降低了关节炎严重程度。通过增加血清素衍生的代谢物5-羟基吲哚-3-乙酸(5-Hiaa)的水平,抑制依赖于富苯胺的关节炎,其激活芳基 - 烃受体(AHR),新发现的转录标志物BREG功能。因此,通过AHR活化的丁酸盐补充剂对抑制生发中心(GC)B细胞和Plasmablast分化的同时支持支撑BREG功能的分子程序。我们的研究表明,丁酸盐补充剂可以作为系统性自身免疫疾病改善的可行疗法。

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