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通过TGF-β/Smad3信号传递,LHPP缺乏会加剧肝纤维化

Yue Zhang¹, Bi-Min Li¹, Wang Zhang²

¹Department of Gastroenterology, Digestive Disease Hospital, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, China.

FASEB journal : official publication of the Federation of American Societies for Experimental Biology

|October 7, 2024

概括

聚氨酸聚胺无机酸酸酶 (LHPP) 缺乏通过激活TGF-β/Smad3通路使肝纤维化恶化. 恢复LHPP功能或抑制这种途径可能为肝纤维化提供治疗益处.

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
在瘤学瘤学.

背景情况:

肝纤维化是一种病理性伤口愈合反应,可能导致肝硬化和癌症.
聚氨酸聚胺无机酸酸酶 (LHPP) 是一种已知的瘤抑制剂,但其在肝纤维化中的作用尚不清楚.

研究的目的:

研究LHPP在肝纤维化中的功能和调节网络.
确定LHPP缺乏是否会加剧肝纤维化,并阐明潜在的分子机制.

主要方法:

在人类和小鼠纤维性肝脏组织中评估LHPP表达,使用免疫组织化学和西欧涂抹.
在使用碳四化物 (CCl4) 或硫乙胺 (TAA) 的野生类型和LHPP淘汰赛小鼠中诱导肝纤维化.
在体外和体内研究了TGF-β/Smad3通路和亡,包括使用TGF-β/Smad3通路抑制剂.

主要成果:

在纤维化肝脏组织中,LHPP表达显著下调.
在小鼠中,LHPP缺乏加剧了CCl4和TAA诱导的肝纤维化.
确定TGF-β/Smad3通路是LHPP的关键下游通路,其抑制逆转了LHPP缺乏的纤维化影响.

结论:

缺乏LHPP会加剧肝纤维化,主要是通过TGF-β/Smad3信号通路的激活.
LHPP作为抗肝纤维化的保护因素,其下调有助于疾病的进展.
肝纤维化是治疗肝纤维化的潜在治疗标.

关键词:

在 LHPP 中,LHPP 具有较高的度.在TGF-β/Smad3中.肝细胞的亡是肝细胞的亡.肝脏纤维化肝脏纤维化肝脏纤维化模型

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