The interplay of membrane cholesterol and substrate on vascular smooth muscle biomechanics.

The interplay of membrane cholesterol and substrate on vascular smooth muscle biomechanics.
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DOI:
10.1016/bs.ctm.2020.08.003
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发表时间:
2020
影响因子:
--
通讯作者:
Hong Z
Hong Z
中科院分区:
生物学4区
文献类型:
--
作者:
Sanyour HJ;Rickel AP;Hong Z

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心血管疾病(CVD)仍然是世界范围内的主要死亡原因。具体而言,动脉粥样硬化是一种特征为缓慢进展的慢性炎性疾病的CVD。在动脉粥样硬化过程中,血管壁积聚胆固醇并导致脂肪条纹形成。血管壁硬度的进行性变化对血管平滑肌细胞(VSMCs)施加交替的机械提示。血管中膜层VSMCs的分离和向内膜的迁移是动脉粥样硬化的关键步骤。VSMC表型转换是一个复杂的改变VSMC结构和生物力学功能的过程。这些变化影响细胞粘附分子的表达和功能,从而影响VSMC迁移。越来越多的证据表明,胆固醇能够调节细胞迁移,增殖和扩散。然而,细胞胆固醇和细胞外基质(ECM)刚度/组成对VSMC生物力学的相互作用和协调作用仍有待阐明。
Cardiovascular disease (CVD) remains the primary cause of death worldwide. Specifically, atherosclerosis is a CVD characterized as a slow progressing chronic inflammatory disease. During atherosclerosis, vascular walls accumulate cholesterol and cause fatty streak formation. The progressive changes in vascular wall stiffness exert alternating mechanical cues on vascular smooth muscle cells (VSMCs). The detachment of VSMCs in the media layer of the vessel and migration toward the intima is a critical step in atherosclerosis. VSMC phenotypic switching is a complicated process that modifies VSMC structure and biomechanical function. These changes affect the expression and function of cell adhesion molecules, thus impacting VSMC migration. Accumulating evidence has shown cholesterol is capable of regulating cellular migration, proliferation, and spreading. However, the interaction and coordinated effects of both cellular cholesterol and the extracellular matrix (ECM) stiffness/composition on VSMC biomechanics remains to be elucidated.
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