内皮结核TBK1缺陷通过抑制PAK1/ERK1/2信号传导来抑制内皮到半细胞的过渡和动脉生成
Yujie Pu1,2,3,4, Peihua Dong1, Lei He1,2
1Department of Biomedical Science (Y.P., P.D., L.H., Y.W., Q.C., C.K.C., L.W., Y.H.), City University of Hong Kong, China.
Circulation research
|February 13, 2026
概括
坦克结合激酶1 (TBK1) 驱动了内皮细胞到介质细胞的过渡 (EndMT) 和动脉样硬化. 用GSK8612抑制TBK1可减少斑块形成,为血管疾病提供潜在的治疗策略.
科学领域:
- 心血管生物学 心血管生物学
- 分子医学是分子医学.
- 炎症研究 炎症研究
背景情况:
- 动脉样性血管疾病是导致死亡的主要原因,需要超越降脂药物的新疗法.
- 向内皮炎症和内皮到介质酶过渡 (EndMT) 对于改善治疗结果至关重要.
- 在冠状动脉心脏病患者中观察到增加的TANK结合激酶1 (TBK1) 基因突变,但其在内皮功能障碍和动脉动脉产生中的作用尚不清楚.
研究的目的:
- 阐明TANK结合激酶1 (TBK1) 在内皮功能障碍,炎症和动脉样硬化中的功能.
- 调查将TBK1激活与内皮细胞转化为介质细胞转化 (EndMT) 联系起来的机制性途径.
- 在动脉样硬化的临床前模型中评估TBK1抑制剂的治疗潜力.
主要方法:
- 在人类和老鼠动脉中利用液体染色学-质谱学,免疫染色,RNA测序和西部斑.
- 在ApoE-/-小鼠中研究了内皮特异性TBK1敲击,并使用基于TurboID的质谱和共免疫沉来进行机制研究.
- 在ApoE-/-小鼠和人类内皮细胞中评估了TBK1抑制剂GSK8612的疗效.
主要成果:
- 在动脉样硬化动脉中发现了TBK1表达和激活 (在Ser172的酸化) 的升高,并由炎症因素 (TNF-α,IL-1β) 诱导.
- 通过与PAK1IP1相互作用,通过与PAK1IP1相互作用,通过化RAC1-PAK1和ERK1/2,抑制PAK1结合,促进TBK1激活EndMT.
- 特定于内皮的TBK1淘汰或GSK8612治疗显著抑制了ApoE-/-小鼠的EndMT和动脉样硬化发展,而没有改变脂质水平.
结论:
- 激活的TBK1通过PAK1/ERK信号通路促进EndMT和动脉动脉生成.
- 针对TBK1,通过敲除或抑制GSK8612,有效抑制EndMT和动脉样硬化斑块的形成.
- TBK1抑制剂代表了治疗动脉样硬化血管疾病的有希望的治疗途径.
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