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氧化低密度脂蛋白和剪切诱导的化在一个性大动脉膜疾病-on-a-chip平台中的化

Melissa Mendoza-Seale¹, Mei-Hsiu Chen², Peter Huang³

¹Department of Biomedical Engineering, Binghamton University, Binghamton, NY, United States.

Frontiers in cardiovascular medicine

|November 10, 2025

概括

一种新的性大动脉病 (CAVD) 芯片模型表明,内皮细胞和剪切应力通过促进细胞外矩阵重塑和功能障碍来加速的化,有助于临床前药物开发.

科学领域:

心血管生物学心血管生物学
生物材料科学生物材料科学
医疗工程医疗工程

背景情况:

动脉疾病 (CAVD) 涉及免疫细胞透,细胞外基质变化和氧化低密度脂蛋白 (oxLDL) 沉积.
大动脉膜疾病影响着全球相当一部分心脏病患者.

研究的目的:

通过使用专门的芯片平台,研究内皮细胞,oxLDL度和CAVD中剪切应力的作用.
模拟大动脉膜的纤维层,以研究化机制.

主要方法:

开发一个CAVD-on-a-chip平台,使用与猪大动脉间歇性和内皮细胞的原蛋白I水凝.
芯片模型暴露于不同度的oxLDL (25-50 μg/ml) 和剪切应力 (20 dyne/cm2).
进行为期两天的动态培养实验,观察细胞矩阵-oxLDL相互作用.

主要成果:

内皮细胞和剪切应力显著增加了性酸酶活性和硫酸糖氨基甘油的产生.
观察到各种酸盐和酸酸盐的形成,表明化.
动态培养揭示了3D细胞-oxLDL相互作用,导致细胞外矩阵重塑和内皮功能障碍.

结论:

芯片上的CAVD模型有效地复制了早期CAVD的关键病理特征.
这些发现强调了内皮细胞和剪切应力在驱动膜化中的关键作用.
该模型为了解CAVD机制和推进针对性干预的临床前药物开发提供了有前途的工具.

关键词:

大动脉门的大动脉门化的化过程蛋白质脂质蛋白质 (lipoprotein) 是一种脂肪蛋白质.微流体学在微流体学方面微生理系统的微生理系统.剪切压力的压力.

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