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亚利碳化合物受体通过调节聚胺生物合成,对巨细胞灭和肠道炎症提供保护

Yajing Gao^1,2, Kwei-Yan Liu^1,2,3, Wenfeng Xiao^1,2

¹Department of Critical Care Medicine, Children's Hospital of Fudan University, National Children's Medical Center, and the Shanghai Key Laboratory of Medical Epigenetics, International Co-laboratory of Medical Epigenetics and Metabolism, Ministry of Science and Technology, Institutes of Biomedical Sciences, Fudan University, Shanghai 200032, China.

|August 8, 2024

概括

亚利碳化合物受体 (AhR) 通过通过ODC1/聚胺通路抑制巨细胞灭酶来调节肠道炎症. 这一发现为炎症性肠病 (IBD) 提供了新的治疗点.

科学领域:

免疫学免疫学免疫学
胃肠病学胃肠病学
分子生物学分子生物学

背景情况:

基碳化合物受体 (AhR) 在肠道炎症中起作用,但其在先天性免疫细胞,特别是巨细胞中的特定机制尚不清楚.
炎症性肠病 (IBD) 的发病过程涉及到肠膜内部复杂的免疫失调.

研究的目的:

研究AhR在炎症性肠病 (IBD) 期间调节巨细胞功能的作用.
阐明 AhR 影响巨细胞灭和肠道炎症的分子机制.

主要方法:

使用硫酸 (DSS) 诱导的小鼠结肠炎模型.
采用单细胞RNA测序来分析肠膜自身的免疫细胞组成.
使用LDH释放,流细胞计,西斑和ELISA进行量化的巨细胞灭菌.
通过RNA-seq,RT-qPCR,光酶试验,ChIP和免疫光检测确认了基因表达的变化.

主要成果:

艾哈缺乏导致单细胞巨细胞数量增加,并加剧了DSS诱导的结肠炎,并增加了巨细胞亡.
食补充AhR连接剂可以保护大肠炎,但这种效果在髓质AhR缺乏的小鼠中丧失了.
通过高调节ODC1,AhR信号抑制了巨细胞灭,增强了聚胺生物合成 (精子胺),通过K+排泄抑制抑制了NLRP3炎症组合.
在性结肠炎患者的活检中观察到AHR和ODC1表达之间的正相关性.

结论:

AhR/ODC1/多胺轴对于维持肠道平衡至关重要.
准这一轴为炎症性肠病提供了潜在的治疗策略.

关键词:

阿里碳水化合物受体是什么?一个ODC1一个ODC1 巨细胞是一个巨细胞.热致灭 (pyroptosis) 是一种致的过程.精子精子精子精子

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