血管形态发生的新兴机械控制
Jordan Whisler1, Somayeh Shahreza2, Karin Schlegelmilch3
1Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA.
Science advances
|August 11, 2023
概括
发育的血管通过纤维细胞介导的机械传导,通过纤维细胞介导的机械传导,通过纤维细胞介导的机械传导,通过纤维细胞介导的机械传导,通过纤维细胞介导的机械传导,通过纤维细胞介导的机械传导,通过纤维细胞介导的机械传导,通过纤维细胞介导的机械传导,通过纤维细胞介导的机械传导,通过纤维细胞介导的机械传导,通过纤维细胞介导的机械传导,通过纤维细胞介导的机械传导,通过纤维细胞介导的机械传导,通过纤维细胞介导的机械传导,通过纤维细胞介导的机械传导,通过纤维细胞介导,通过纤维细胞介导,通过纤维细胞介导,通过纤维细胞介导,通过纤维细胞介导,通过纤维细胞介导,通过纤维细胞介导,形成血管. 这种由YAP1调节的自我硬机制对于预防血管缺陷至关重要.
科学领域:
- 发育生物学 发展生物学
- 生物医学工程 生物医学工程
- 机械生物学 机械生物学
背景情况:
- 血管化依赖于形态信号和机械线索来指导细胞行为并塑造血管网络.
- 通过发展血管系统来实现有效的血管化的活性机械性质调节的作用仍然在很大程度上未被探索.
研究的目的:
- 通过检查血管发育过程中组织机械性质如何变化来研究血管化机制.
- 确定血管形态发生过程中出现的组织硬化背后的细胞和分子机制.
- 评估纤维细胞机械传导和YAP1信号在调节血管机械和功能的作用.
主要方法:
- 工程组织结构包括内皮细胞和纤维细胞被用来研究血管化机制.
- 测量了组织刚性,细胞力和细胞外基质 (ECM) 相互作用.
- 在小鼠模型中使用了基因操纵,包括纤维细胞中YAP1的缺失,以调查机械传导途径.
主要成果:
- 在血管形态发生过程中,组织硬度显著增加,与血管功能增强相关.
- 来自纤维细胞的收缩细胞力量对于新出现的组织硬至关重要,与ECM特性协同工作.
- 纤维细胞特异性YAP1信号传递对于机械传导,新兴组织硬化和正常的血管功能至关重要;它缺少导致小鼠胚胎的硬度降低和致命的血管缺陷.
结论:
- 血管系统的发展积极调节其机械特性,组织硬化是关键的新兴现象.
- 由YAP1介导的纤维细胞机械传导在控制血管机械和发育方面发挥着至关重要的作用.
- 这些发现强调了在血管化过程中机械调节的重要性,并通过生物启发的组织工程为再生医学提供了洞察力.
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