向二维基因酶的OTUB1通过调节PDGFRβ来保护动脉样硬化中的血管光滑肌细胞
Fei Xu1,2,3,4, Han Chen2,3,4, Changyi Zhou2,3,4
1Department of Cardiology and Laboratory of Heart Valve Disease, West China Hospital, Sichuan University, Chengdu, 610041, China.
Frontiers of medicine
|April 21, 2024
概括
准OTUB1,一个二维基因酶,可以防止血管光滑肌细胞 (VSMC) 现型切换和动脉样硬化进展. 沉默OTUB1稳定了斑块,并通过促进PDGFRβ降解来减少心血管功能障碍.
科学领域:
- 心血管生物学 心血管生物学
- 分子生物学分子生物学
- 细胞生物学 细胞生物学
背景情况:
- 动脉样硬化涉及血管光滑肌细胞 (VSMC) 现型切换,这是斑块发育至关重要的过程.
- 德尤比基提纳酶调节VSMC表型,但它们在动脉样硬化中的具体作用尚不清楚.
- 在动脉动脉生成过程中,在VSMC调节中,ubiquitylation起着关键作用.
研究的目的:
- 研究OTU二维基因酶在调节VSMC表型和动脉样硬化的作用.
- 阐明OTUB1影响VSMC行为和斑块形成的分子机制.
主要方法:
- 在人类大动脉光滑肌细胞中进行RNAi查,以识别相关的duebiquitinases.
- 使用Apoe淘汰赛小鼠进行体内研究,以评估动脉样硬化进展.
- 在体外测试以评估VSMC的增殖,迁移和表型切换.
- 用RNA测序和质谱测量来识别分子点和途径.
主要成果:
- 沉默OTUB1抑制PDGF-BB刺激的VSMC表型切换在体外.
- 降低OTUB1减轻了动脉样硬化斑块负担,并在体内促进了斑块的稳定性.
- 抑制OTUB1降低了VSMC的增殖和迁移,并影响了分化和粘附.
- OTUB1在K707处对PDGFRβ进行双双基化,防止其降解,并促进VSMC表型切换.
结论:
- OTUB1通过稳定PDGFRβ.通过促进VSMC表型切换和动脉样硬化进展.
- 击败OTUB1可以改善VSMC表型切换并缓解动脉样硬化.
- OTUB1代表了治疗动脉样硬化的潜在治疗标.
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