慢性肝病中的ECM1表达:由EGF/STAT1和IFNγ/NRF2信号调节
Yujia Li1, Chenjun Huang1,2, Weiguo Fan3
1Department of Medicine II, University Medical Center Mannheim, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany.
JHEP reports : innovation in hepatology
|July 17, 2025
概括
皮表皮生长因子 (EGF) /信号转换器和转录1激活器 (STAT1) 信号传输促进细胞外矩阵蛋白1 (ECM1) 表达,防止肝纤维化. 干扰素玛 (IFNγ) /核因子与红色素2相关的因子2 (NRF2) 信号抑制ECM1,加速慢性肝病 (CLD).
科学领域:
- 肝病学和分子生物学
- 细胞外矩阵和纤维化研究研究
背景情况:
- 细胞外矩阵蛋白1 (ECM1) 对于肝脏平衡至关重要,维持潜伏的转化生长因子-β静止.
- 在肝细胞损伤时ECM1的下调加速纤维化和慢性肝病 (CLD) 的进展.
研究的目的:
- 在病理生理条件下阐明肝细胞中ECM1表达的调节机制.
- 为了研究ECM1在肝炎和纤维化背景下的作用.
主要方法:
- 促进体分析以确定ECM1转录调节体.
- 单细胞和大量RNA测序以评估ECM1相关的基因表达.
- 使用细胞系,原发性肝细胞和临床/临床前肝脏组织的功能性测试.
主要成果:
- 皮表皮生长因子 (EGF) /EGF受体 (EGFR) 信号,通过STAT1在S727的酸化,增强健康肝细胞中的ECM1转录.
- 干扰因子玛 (IFNγ) 通过降低EGFR的调节和促进Y701的STAT1酸化来破坏这种途径,从而损害ECM1促进剂结合.
- 此外,IFNγ还会诱导与核素红色素2相关的核转位因子2 (NRF2),抑制ECM1的表达;AAV8-ECM1疗法在小鼠中减弱了纤维化,以及在CLD患者中与EGFR和IFNγ/NRF2相关的ECM1水平.
结论:
- 在健康和疾病期间,EGF/STAT1信号促进ECM1的表达,而IFNγ/NRF2信号则在肝细胞中抑制ECM1的表达.
- ECM1显示出作为一种抗纤维素剂的潜力,特别是在由炎症或氧化应激驱动的CLD中.
- 了解这些调节途径为CLD患者提供了潜在的治疗点.
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