基酶-2 (EGLN1) 中介TGF-β1通路调节了雅克脏中的上皮细胞-介质细胞过渡
Xuefeng Bai1, Hongqin Lu1, Zenghua Lu1
1College of Veterinary Medicine, Gansu Agricultural University, Lanzhou 730070, China.
International journal of biological macromolecules
|August 3, 2025
概括
不同于其他物种,慢性缺氧令人惊地抑制了雅克脏的表皮-介质细胞过渡 (EMT). 雅克斯可以通过上调EGLN1来保护纤维化,EGLN1抑制EMT促进通路.
科学领域:
- 生理学 生理学 生理学
- 分子生物学分子生物学
- 比较医学是一种比较医学.
背景情况:
- 表皮-介质细胞过渡 (EMT) 是纤维化的一个关键驱动因素.
- 缺氧是脏疾病中EMT的已知触发因素.
- 雅克拥有独特的适应能力,能够适应高海拔地区的低氧.
研究的目的:
- 为了研究低氧对雅克脏EMT的影响.
- 阐明在雅克细胞中低氧适应的分子机制.
主要方法:
- 在雅克管状上皮细胞 (RTEC) 中诱导缺氧.
- 通过蛋白质表达对EMT标记物 (E-cadherin,N-cadherin,Fibronectin) 的分析.
- 用于基因表达特征的RNA测序 (RNA-Seq).
- 研究了prolyl氧酶-2 (EGLN1) 和TGF-β1通路的作用.
主要成果:
- 慢性缺氧抑制了N-cadherin和Fibronectin,同时在雅克RTEC中提高了E-cadherin的调节,抑制了EMT.
- 通过RNA-Seq确定了EGLN1和TGF-β1通路的参与.
- TGF-β1激活诱导了EMT,而EGLN1调节的TGF-β1诱导的EMT标记物.
- EGLN1抑制了RTEC迁移,并在缺氧下促进了增殖.
结论:
- 缺氧不会诱导雅克脏的EMT;相反,它抑制了EMT.
- 雅克可以利用EGLN1上调来保护脏免受低氧诱导的EMT.
- 在雅克的低氧条件下,EGLN1对纤维化起着保护作用.
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