Multi-physics interactions drive VEGFR2 relocation on endothelial cells.

Multi-physics interactions drive VEGFR2 relocation on endothelial cells.
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DOI:
10.1038/s41598-017-16786-4
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发表时间:
2017-12-01
期刊:
影响因子:
4.6
通讯作者:
Mitola S
Mitola S
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Damioli V;Salvadori A;Beretta GP;Ravelli C;Mitola S

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血管内皮生长因子受体-2(VEGFR 2)是一种促血管生成受体,在内皮细胞(EC)上表达。虽然遵循VEGFR 2活化的生化途径已经建立,但关于质膜上受体动力学的知识仍然有限。配体刺激诱导EC的极化和VEGFR 2的重新定位,无论是在细胞突起中还是在接种在配体富集的细胞外基质(ECM)上的细胞的基底面中。我们开发了一个数学模型,以模拟在细胞的机械粘附到富含配体的基板上的细胞膜上的VEGFR 2的搬迁。共同设计的体外实验与模拟允许识别三个阶段的受体动力学,这分别由高的化学反应速率,由机械变形速率,和由膜上的自由受体的扩散控制。识别的法律,调节受体极化开辟了新的视角,通过调制EC激活开发创新的抗血管生成策略。
Vascular Endothelial Growth Factor Receptor-2 (VEGFR2) is a pro-angiogenic receptor, expressed on endothelial cells (ECs). Although biochemical pathways that follow the VEGFR2 activation are well established, knowledge about the dynamics of receptors on the plasma membrane remains limited. Ligand stimulation induces the polarization of ECs and the relocation of VEGFR2, either in cell protrusions or in the basal aspect in cells plated on ligand-enriched extracellular matrix (ECM). We develop a mathematical model in order to simulate the relocation of VEGFR2 on the cell membrane during the mechanical adhesion of cells onto a ligand-enriched substrate. Co-designing the in vitro experiments with the simulations allows identifying three phases of the receptor dynamics, which are controlled respectively by the high chemical reaction rate, by the mechanical deformation rate, and by the diffusion of free receptors on the membrane. The identification of the laws that regulate receptor polarization opens new perspectives toward developing innovative anti-angiogenic strategies through the modulation of EC activation.
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