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由肠道微生物群衍生的尸体对巨细胞进行免疫代谢重编程,控制结肠炎症,结肠炎症
Rodrigo de Oliveira Formiga1, Qing Li1, Yining Zhao2
1Sorbonne Université, INSERM UMRS-938, Centre de Recherche Saint-Antoine, CRSA, AP-HP, Paris 75012, France; Gut, Liver & Microbiome Research (GLIMMER) FHU, Paris, France.
Cell host & microbe
|October 1, 2025
概括
肠道细菌产生体,这是一种影响免疫细胞的分子,称为巨细胞. 它的度决定了尸体是否减少或促进炎症,为炎症性肠病 (IBD) 提供了洞察力.
科学领域:
- 免疫学 免疫学 免疫学
- 微生物学 微生物学
- 代谢过程中的代谢.
背景情况:
- 卡达维林是一种来自肠道微生物群的聚胺,与健康和炎症性肠病 (IBD) 有关.
- 多氨酸在细胞过程和免疫反应中起着至关重要的作用.
研究的目的:
- 调查尸在调节单细胞-巨细胞免疫代谢和功能中的双重作用.
- 为了阐明度依赖的尸蛋白对巨细胞两极分化和炎症反应的影响.
- 在肠道炎症和IBD的背景下探索尸体的含义.
主要方法:
- 通过L-lysine载体的尸体吸收和其激活硫素系统的研究.
- 在炎症期间检查尸体信号通过aconitate脱碳酶1 (Acod1) -itaconate.
- 评估了不同度的尸体对巨细胞两极分化和功能的影响,包括Nrf2激活和糖解.
- 利用实验性结肠炎模型,分析IBD患者的尸体水平.
主要成果:
- 在基线时,尸体激活了类毒素系统;在炎症期间,它通过Acod1-itaconate发出信号,这两种途径都激活了Nrf2,促进了线粒体呼吸,并诱导了免疫调节性巨细胞两极分化.
- 高度的尸体激活了组胺4受体,驱动了依赖于糖溶解的炎症和促炎性巨细胞功能.
- 尸体在实验性结肠炎中表现出矛盾的效应,结果取决于Enterobacteriaceae水平.
- 在IBD患者中,体度升高与疾病爆发风险增加相关.
结论:
- 尸体作为微生物群衍生代谢物,以环境和度依赖的方式操纵巨细胞能量代谢.
- 这些代谢变化对肠道炎症和IBD的发病有重大影响.
- 准尸体的新陈代谢或信号通路是IBD的潜在治疗策略.
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