骨髓性TGF-β信号形状肝细胞异质性和代谢性肝病的发病因子

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Ziyi Meng¹, Xiaoxue Qiu¹, Zhimin Chen¹

¹Life Sciences Institute and Department of Cell & Developmental Biology, University of Michigan Medical Center, Ann Arbor, MI 48109, USA.

JHEP reports : innovation in hepatology

|July 24, 2025

概括

骨髓TGF-β信号调节了在代谢功能障碍相关的脂肪肝炎 (MASH) 中肝脏巨细胞的多样性. 破坏这种途径会使MASH恶化,并通过改变免疫细胞功能来促进肝癌.

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.
分子生物学分子生物学

背景情况:

肝脏巨细胞异质性是代谢功能障碍相关的脂肪肝炎 (MASH) 的关键.
在MASH进展过程中控制肝脏巨细胞多样性的机制尚未完全理解.

研究的目的:

研究TGF-β信号传导在调节肝细胞异质性和MASH病变发生中的作用.
确定特异性TGF-β信号干扰对MASH进展和相关肝癌的影响.

主要方法:

使用骨髓细胞特异性Tgfbr1淘汰赛小鼠,食特定饮食 (CDA-HFD或GAN).
分析肝脏组织使用组织病理学,qPCR,免疫阻塞,流细胞计和RNA测序 (批量和单核).

主要成果:

TGF-β信号传递对于MASH肝脏中Trem2+和Fcrl5+巨细胞的扩张至关重要.
骨髓细胞中Tgfbr1的损失加剧了MASH,增加了损伤,炎症和纤维化.
缺乏Tgfbr1的巨体显示出炎细胞激活,衰老和免疫抑制的特征,促进T细胞疲劳和MASH相关的肝细胞癌.

结论:

骨髓TGF-β信号传递是MASH肝细胞巨异质和两极化的一个关键驱动因素.
这种信号通路影响MASH的进展和MASH相关的肝癌的发展.

关键词:

在HCC中,HCC是HCC.马什 (MASH) 是一个非常重要的产品.巨细胞是一个巨细胞.这就是TGF-β.在TREM2中,我们可以使用TREM2.

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TGF - β Signaling Pathway

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