库林5通过激活TRAF6/NF-κB/HIF-1α/VEGF来加剧缺氧性肺高血压
Lei Wang1,2, Jing Huang3, Ruoyang Zhang4,2
1Department of Respiratory and Critical Care Medicine, The Second Affiliated Hospital of Xi'an Jiaotong University (Xibei Hospital), Xi'an, Shaanxi 710004, China.
iScience
|November 15, 2023
概括
库林5 (Cul 5) 通过促进细胞生长和粘附,驱动低氧性肺高血压 (HPH). 准Cul 5为HPH治疗提供了一个新的治疗策略.
科学领域:
- 肺高血压研究 肺高血压研究
- 分子生物学分子生物学
- 血管生物学 血管生物学
背景情况:
- 低毒性肺高血压 (HPH) 呈现出对有效药物治疗的重大未满足需求.
- 基因表达研究强调Cullin 5 (Cul 5) 是HPH病变发生的关键因素.
- 在HPH患者和相关动物模型中,Cul 5明显上调.
研究的目的:
- 调查Cullin 5 (Cul 5) 在低氧性肺高血压 (HPH) 的发展和进展中的作用.
- 为了探索针对HPH的Cul 5的治疗潜力.
- 阐明Cul 5对HPH产生贡献的分子机制.
主要方法:
- 在HPH患者的基因表达分析和小鼠HPH模型.
- 使用人类肺动脉内皮细胞 (PAEC) 进行体外研究,以评估Cul 5功能.
- 在体内实验涉及内皮特异性Cul 5沉默和药物无活化.
- 对TRAF6/NF-κB/HIF-1α/VEGF信号通路的机制研究.
主要成果:
- 在HPH中,Cul 5表达升高,促进PAEC血管新生和粘附.
- 通过Cul 5无活化 (通过pevonedistat或NEDD8沉默) 可减轻这些细胞效应.
- 内皮质Cul 5沉默和佩文尼迪斯塔特治疗减少了体内缺氧血管重塑.
- 证实Cul 5通过TRAF6/NF-κB/HIF-1α/VEGF通路调解HPH.
结论:
- 库林5是HPH中的关键调解物,通过TRAF6/NF-κB/HIF-1α/VEGF通路起作用.
- 抑制Cul 5表明HPH的治疗潜力.
- Cul 5代表了对HPH临床干预的有前途的新型治疗标.
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