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与痕相关的内皮星状细胞交叉驱动MASH中的纤维化解

Kenneth Li¹, Vardhman Kumar², Tran To³

¹Division of Liver Diseases, Icahn School of Medicine at Mount Sinai, New York, NY, USA; Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA; Mount Sinai Institute for Liver Research, Icahn School of Medicine at Mount Sinai, New York, NY, USA.

|January 25, 2026

概括

研究人员确定了一条Wnt9b-Sfrp2通路,该通路对于在代谢功能障碍相关的脂肪肝炎 (MASH) 中肝纤维化回归至关重要. 特定的肝脏内皮细胞 (Endo4) 分泌Wnt9b,调节这一重要的愈合过程.

科学领域:

肝病学肝病学是一种肝病学.
分子生物学分子生物学
细胞生物学细胞生物学

背景情况:

纤维化是死亡的主要原因,肝纤维化对公共健康产生重大影响.
代谢功能障碍相关的脂肪肝炎 (MASH) 是一种普遍存在的慢性肝病,其特征是肝纤维化.
随着损伤的停止,肝纤维化的自发解决是可能的,但根本的机制尚未完全理解.

研究的目的:

建立一个小鼠模型来研究MASH中的纤维化回归.
为了确定涉及MASH纤维化回归的分子驱动因素和细胞-细胞通信网络.
研究特定内皮细胞子集在肝纤维化解决中的作用.

主要方法:

开发一个强大的小鼠模型用于MASH纤维化回归.
单细胞和现场分子分析.
细胞对细胞通信预测分析.
干扰研究评估Wnt9b-Sfrp2交叉声交互的影响.
对于内皮细胞标记物的3D成像和免疫染色.

主要成果:

一个新的Wnt9b-Sfrp2信号通路被确定为MASH中自发性纤维化回归的关键.
一个特定的肝脏内皮细胞子集,称为"Endo4",被确定为Wnt9b.的来源.
扰乱Wnt9b-Sfrp2交叉显著减弱了纤维化回归.
被VWF标记的endo4细胞被发现与纤维化体内的激活的肝星细胞相邻,表现出蛋白酶活性.

结论:

由Endo4细胞介导的Wnt9b-Sfrp2交叉是MASH纤维化回归中的关键调节机制.
与痕相关的内皮细胞在编排肝纤维化解决过程中发挥着至关重要的作用.
这项研究为肝纤维化回归的分子基础提供了新的见解,提供了潜在的治疗点.

关键词:

CP:代谢过程中的代谢.一个MASH鼠标模型.在WNT信号传输中.恒星体内交叉体的交叉体是什么纤维化回归的回归在位子蛋白酶活性中的蛋白酶活性.肝脏内皮细胞是肝脏内皮细胞.与痕相关的内皮细胞.与痕相关的利基市场单细胞/细胞核RNA测序组织清除和3D成像

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