矩阵对蛋白质分解裂变的抵抗控制了血管发芽过程中依赖于收缩性的迁移模式
Martin S Weiß1, Giuseppe Trapani1, Hongyan Long1
1Bioactive Materials Laboratory, Max Planck Institute for Molecular Biomedicine, Röntgenstraße 20, 48149, Münster, Germany.
Advanced science (Weinheim, Baden-Wurttemberg, Germany)
|March 13, 2024
概括
内皮细胞在血管生成过程中根据它们遇到的细胞外矩阵抵抗来适应它们的迁移. 这种矩阵抵抗影响细胞行为和细胞骨重塑,揭示了血管形成的新调节器.
科学领域:
- 生物医学工程 生物医学工程
- 细胞生物学 细胞生物学
- 生物材料科学 生物材料科学
背景情况:
- 血管新生,新血管的形成,对于组织恒温和疾病至关重要.
- 细胞外基质 (ECM) 物理调节细胞行为,但其在血管生成期间内皮细胞迁移中的作用尚未完全理解.
- 像矩阵刚性和可降解性这样的物理线索是已知的调节者,但矩阵抵抗对迁移表型的影响仍然未被探索.
研究的目的:
- 研究细胞外基质的物理线索如何调节血管发芽期间的内皮细胞迁移.
- 探索矩阵抵抗和内皮细胞迁移模式之间的关系.
- 阐明细胞骨重塑在对矩阵性质的反应中的作用.
主要方法:
- 使用可调节的合成水凝用于血管发芽的生物仿真模型的开发.
- 矩阵交联密度的系统变化,可降解性和细胞蛋白质溶解活性.
- 对内皮细胞迁移表型和actin细胞骨架组织的分析.
主要成果:
- 内皮细胞感知并响应ECM对蛋白质分解裂变的抵抗.
- 由交叉连接,可降解性和细胞蛋白解影响的矩阵电阻决定了迁移策略.
- 高矩阵抗性诱导从集体迁移到单细胞迁移的切换,这取决于actomyosin的收缩性.
- 这种迁移开关与显著的动因细胞骨架重组有关,包括压力纤维的损失和点状F-actin集群的形成.
结论:
- 矩阵抵抗是一种新型的血管发芽调节剂.
- ECM的物理特性通过细胞骨重塑显著影响内皮细胞迁移模式.
- 这些发现提供了一个新的机制,将生物物理微环境与血管生成中的细胞迁移动态联系起来.
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