通过YAP-MMP信号轴进行凝介导的血管自我组装
Mozhgan Keshavarz1,2, Quinton Smith1,2
1Department of Chemical and Biomolecular Engineering, University of California, Irvine, CA, United States.
概括
在没有生长因子的情况下,工程制造的凝水凝引导血管形成. 优化的机械特性通过再生医学的机械感知途径促进血管自我组装.
科学领域:
- 生物材料科学 生物材料科学
- 再生医学是一种再生医学.
- 血管生物学 血管生物学
背景情况:
- 组织的自我组装取决于细胞外基质 (ECM) 线索和化学信号.
- 了解ECM在血管化中的作用对于组织工程至关重要.
- 现有的方法通常依赖于增长因素,限制了极简主义的方法.
研究的目的:
- 为了研究工程凝水凝在驱动de novo血管生成和血管招募in vivo中的作用.
- 阐明参与矩阵驱动血管自我组装的机械感知途径.
- 开发一个极简化的平台,研究微环境对血管形态发生的影响.
主要方法:
- 制造带有内皮细胞的基于凝的水凝,具有可调节的粘弹性和刚性.
- 在体内植入工程水凝以评估血管生成和宿主血管招募.
- 机械传导途径的研究,包括对相关蛋白 (YAP) 机械感知,αvβ3整合素和矩阵金属蛋白酶2 (MMP-2) 活性.
主要成果:
- 优化的凝水凝促进了de novo血管生成和内源性血管整合in vivo.
- 血管自我组装依赖于YAP机械感知,αvβ3整合素和MMP-2活动.
- 在水凝中可调节的应力放松率促进了无外源生长因子的血管形态发生.
结论:
- 具有量身定制的机械性能的工程凝水凝可以有效地驱动血管自我组装.
- 这项研究强调了机械线索在血管重塑中的关键作用,并为机械学研究提供了一个极简的平台.
- 这些发现支持用于再生医学应用的先进血管化移植的开发.
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