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在毛细血管重塑过程中,VEGF对抗剪切应力决定的动脉命运规范
bioRxiv : the preprint server for biology
|February 8, 2024
概括
动脉生成涉及毛细血管到动脉细胞的过渡. 流体剪切应力 (FSS),而不是VEGF,驱动了这一过程,Sox17调解了这一过程,并反对VEGF信号.
科学领域:
- 内皮细胞生物学 内皮细胞生物学
- 血管发育 血管发育
- 在动脉发生过程中分子信号传递.
背景情况:
- 动脉生成涉及毛细血管到动脉内皮细胞命运过渡.
- 之前的研究表明,VEGF和Notch信号参与了这个过程.
- 动脉生成的调节仍然不完全理解.
研究的目的:
- 阐明动脉形成的调节机制.
- 研究流体剪切应力 (FSS) 和VEGF信号的作用.
- 为了确定动脉特征的关键介质.
主要方法:
- 在不同的条件下研究了内皮细胞命运过渡.
- 分析了FSS,VEGF和Notch信号通路之间的相互作用.
- 利用分子技术识别关键的转录因子,如Sox17.
主要成果:
- 动脉特异性主要由FSS介导,独立于VEGFR2信号传递.
- VEGF信号对抗FSS驱动的动脉化,而不是主要的诱导因素.
- 为了完成动脉形成,VEGFR2信号的下降是必要的.
- 索克斯17作为FSS诱导的动脉特异的关键调解者,是VEGF-FSS竞争的目标.
结论:
- 在血管模式中提出了VEGF-FSS交叉声的新型范式.
- FSS,而不是VEGF,是毛细血管到动脉内皮细胞命运过渡的主要驱动因素.
- 动脉生成涉及由FSS和Sox17调节的依赖和独立的途径.
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