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在肝纤维化期间,细胞交叉介导由类似于Meteorin的调节肝星细胞激活的肝纤维化
Yuxia Zhou1, Guifang Wang1,2, Lingling Liu1
1Department of Pathophysiology, Guizhou Provincial Key Laboratory of Pathogenesis and Drug Research on Common Chronic Diseases, Guizhou Province Talent Base of Research on the Pathogenesis and Drug Prevention and Treatment for Common Major Diseases, Guizhou Medical University, Guiyang, Guizhou, China.
流星类 (Metrnl) 蛋白质水平在肝纤维化中降低. 恢复Metrnl通过调节肝星细胞激活和细胞外基质沉积来保护肝纤维化.
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
- 细胞信号传输 细胞信号传输
背景情况:
- 肝纤维化涉及过度的细胞外基质积累,由激活的肝星细胞 (HSCs) 驱动.
- 肝细胞之间的副信号影响HSC激活,但潜在的分子机制需要进一步研究.
- 分泌流星类 (Metrnl) 显示出治疗肝损伤的潜力,但其在肝纤维化中的作用基本上是未知的.
研究的目的:
- 为了研究石类 (Metrnl) 在肝纤维化病原发生中的作用.
- 阐明Metrnl调节肝星细胞 (HSC) 激活和细胞外基质 (ECM) 沉积的分子机制.
主要方法:
- 在人类和小鼠肝纤维化模型中分析Metrnl表达.
- 产生和分析Metrnl淘汰赛和过度表达的小鼠模型.
- 研究Metrnl对肝细胞和HSC中的PDGFB,EGR1,HECW2和纤维素 (FN) 的影响.
主要成果:
- 肝脏Metrnl表达在肝纤维化中显著下调.
- 梅特林缺乏症加剧了CCl4诱导的肝纤维化,而梅特林的使用改善了肝纤维化.
- 梅特林通过PDGFB/PDGFRβ信号调节HSC激活,并通过HECW2/ubiquitination通路影响纤维内素的降解.
结论:
- 梅特林在肝纤维化中起到关键的调节作用,调解肝细胞和肝细胞细胞之间的通信.
- 甲的缺乏促进了ECM沉积和HSC激活,加剧了肝纤维化.
- Metrnl代表了肝纤维化治疗的潜在治疗标.
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