IL-6跨信号调节酒精相关性肝炎中性炎症的发生
Gaurav Sarode1, Ming-Fo Hsu2, Fawaz G Haj2
1Division of Gastroenterology and Hepatology, University of California-Davis School of Medicine, Sacramento, California.
The American journal of pathology
|June 25, 2025
概括
干白素-6转信号传递 (IL-6TS) 在与酒精相关的肝炎 (AH) 中发挥着至关重要的作用,通过维持肝细胞中的STAT3激活和中性恋炎症,即使IL-6受体表达低.
科学领域:
- 肝病学 肝病学是一种肝病学.
- 免疫学 免疫学 免疫学
- 分子生物学分子生物学
背景情况:
- 酒精相关性肝炎 (AH) 是一种严重的肝病,以炎症为标志.
- 通过古典或跨信号 (TS) 途径传递interleukin-6 (IL-6) 信号,影响肝损伤.
- 在AH病理生理学中IL-6TS的特定作用需要阐明.
研究的目的:
- 确定IL-6转信号 (IL-6TS) 在酒精相关性肝炎 (AH) 病理生理学中的作用.
- 研究IL-6TS如何影响AH肝损伤和炎症的机制.
主要方法:
- 与酒精有关的肝病患者的肝脏RNA测序.
- 在体外研究中使用被转化生长因子β1 (TGF-β1) 和IL-6或超IL-6治疗的HepG2细胞.
- 在体内研究使用老鼠模型的慢性加暴饮暴乙醇暴露.
主要成果:
- 随着AH的严重程度,IL-6受体表达减少,而STAT3激活增加.
- 超IL-6,激活IL-6TS,恢复了具有抑制IL-6受体的肝细胞中的STAT3激活.
- 一个独特的AH患者亚组显示IL-6TS活性增强,中性友透率增加和白细胞迁移通路.
- 乙醇治疗的小鼠表现出增加的STAT3激活和中性恋炎症,尽管肝脏IL-6受体表达减少.
结论:
- 在AH期间,IL-6跨信号传递 (IL-6TS) 保存了肝细胞中的STAT3依赖基因表达.
- 在与酒精有关的肝炎中,IL-6TS有助于中性友炎症.
- 准IL-6TS可能为AH提供治疗策略.
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