从模型到人:理解Tregs在MASLD中的双重作用
Janine Dywicki1, Laura Elisa Buitrago-Molina1, Anna K Baumann1
1Dept. of Gastroenterology, Hepatology, Infectious Disease and Endocrinology, Hannover Medical School, Germany.
JHEP reports : innovation in hepatology
|December 9, 2025
概括
与代谢功能障碍相关的脂肪性肝病 (MASLD) 可以在没有适应性免疫的情况下发展为MASH. 增加的调节性T细胞 (Tregs) 与更糟糕的MASH相关,这表明IL-17产生Tregs的促炎作用.
科学领域:
- 免疫学 免疫学 免疫学
- 肝病学 肝病学是一种肝病学.
- 代谢疾病 代谢疾病
背景情况:
- 与代谢功能障碍相关的性肝病 (MASLD) 影响全球30%的人口,通常与肥胖和糖尿病有关.
- 一个MASLD的子集进展到与代谢功能障碍相关的脂肪肝炎 (MASH),增加肝癌风险.
- 肝脏内免疫细胞,特别是调节性T细胞 (Tregs) 在MASH病变发生过程中的作用尚未完全理解.
研究的目的:
- 研究适应性免疫对MASH的发展和进展的影响.
- 阐明调控性T细胞 (Tregs) 在MASH病变发生过程中的特定作用.
- 为了确定MASH.潜在的免疫调节治疗点.
主要方法:
- 使用高脂肪/高碳水化合物饮食 (HF-HCD) 鼠标模型 (野生类型和Rag2缺乏) 诱导MASH.
- 分析了肝脏内免疫细胞种群,包括Tregs和T效应细胞 (Teff).
- 与肝脏病理和代谢参数相关的免疫细胞概况,并补充了人类肝脏样本.
主要成果:
- HF-HCD诱导的MASH和葡萄糖不耐受性独立于适应性免疫.
- 观察到肝脏内Treg数量增加和Treg/Teff比率增加,与MASH严重性增加相关.
- 一个Tregs子集表达了IL-17 (TH17-skewed),这与更严重的肝病理相关.
结论:
- 适应性免疫不必启动饮食诱导的MASH,但可以放大肝损伤.
- Tregs的扩张,特别是IL-17产生Tregs,与MASH严重程度的增加有关,而不是保护.
- 研究结果表明,针对特定阶段的免疫调节策略,可能准益炎性T细胞子集,可以补充MASH的代谢疗法.
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