在代谢功能障碍相关的脂肪肝炎期间,CD4+T细胞促进纤维化
bioRxiv : the preprint server for biology
|July 9, 2025
概括
CD4+ T 细胞在代谢功能障碍相关的脂肪肝炎 (MASH) 进展中发挥着关键作用. 通过CD4+T细胞准OX40通路显示出治疗MASH和肝纤维化的前景.
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.
- 细胞生物学 细胞生物学
背景情况:
- 代谢功能障碍相关的脂肪肝炎 (MASH) 的特点是未解决的炎症和纤维化.
- CD4+ T 细胞在MASH病原发生中的作用尚不清楚.
- CD4+ T 细胞可以影响免疫反应,炎症和免疫调节.
研究的目的:
- 在MASH中全面描述肝脏CD4+T细胞.
- 阐明MASH中CD4+T细胞的功能和分子通路.
- 为了确定MASH的潜在治疗点.
主要方法:
- 在小鼠和人类MASH模型中进行单细胞蛋白质组和转录组分析 (质量细胞计,CITE测序).
- 功能性测试以评估细胞因子的产生.
- 在体内小鼠模型和体外人类肝脏模型中测试治疗干预措施.
主要成果:
- 肝脏内CD4+T细胞组成的显著变化,包括Th1,调控和细胞毒性子集的丰富.
- 肝脏CD4+T细胞增加促炎细胞因子 (IFNγ,TNFα) 的产生.
- 在MASH中,OX40 (Tnfrsf4) 在肝脏CD4+T细胞上的升调.
- 对OX40L-OX40轴的治疗阻塞减少了纤维化,并改善了小鼠MASH组织学和人类肝脏模型中的炎症.
结论:
- 肝脏CD4+ T细胞在MASH中表现出不同的表型和促炎功能.
- OX40L-OX40轴代表了MASH病变发生过程中CD4+ T细胞驱动的关键途径.
- 准OX40通路为MASH和肝纤维化提供了一个有前途的免疫治疗策略.
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