麻省理工学院为巨细胞的铁稳定计划,在生命早期驱动肠肝炎轴
Deping Han1, Lulu Han2, Lingyun Kang2
1Peking University Institute of Advanced Agricultural Sciences, Shandong Laboratory of Advanced Agricultural Sciences in Weifang, Weifang, Shandong 261325, China.
Cell reports
|March 15, 2026
概括
生命早期的压力通过导致铁过载来破坏肠道屏障功能,这是由MITF驱动的. 针对这种铁失调可以减少全身慢性炎症,并防止非传染性疾病.
科学领域:
- 免疫学 免疫学 免疫学
- 胃肠病学 胃肠病学
- 代谢性疾病是一种代谢性疾病.
背景情况:
- 系统性慢性炎症 (SCI) 是非传染性疾病的驱动因素.
- 早期的压力会破坏肠道平衡,通过不清楚的机制导致SCI.
研究的目的:
- 调查将生命早期压力,肠道屏障功能障碍和SCI联系在一起的机制.
- 确定关键的分子调节剂和潜在的治疗点,应激诱导的炎症.
主要方法:
- 利用翻译模型研究肠道屏障完整性和炎症.
- 采用单细胞分析分析免疫细胞群 (中性粒细胞,巨细胞) 和基因表达.
- 研究了转录因子MITF在铁平衡和炎症信号传递中的作用.
主要成果:
- 不调节的铁平衡,特别是肠道上皮细胞和巨细胞的铁过载,破坏了肠道屏障的完整性.
- MITF控制了巨细胞的铁过载,促进了中性粒细胞的招募和CXCL8的升高.
- 异常的铁平衡与干扰素信号传递有关,并调节关键的铁相关基因 (FTH1,TFRC,FRRS1).
- 压力诱导的肠道炎症与肝脏炎症和代谢失调通过肠肝轴同步.
结论:
- MITF是肠-肝炎级联的关键调节者,由生命早期的压力引发.
- 异常的铁平衡是压力诱导的肠壁功能障碍和全身炎症的关键机制.
- 向铁dyshomeostasis的治疗策略显示出预防和治疗早期生命炎症疾病的希望.
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