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Extracellular matrix controls myosin light chain phosphorylation and cell contractility through modulation of cell shape and cytoskeletal prestress

机译:细胞外基质通过调节细胞形状和细胞骨架预应力来控制肌球蛋白轻链磷酸化和细胞收缩

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摘要

The mechanism by which vascular smooth muscle (VSM) cells modulate their contractility in response to structural cues from extracellular matrix remains poorly understood. When pulmonary VSM cells were cultured on increasing densities of immobilized fibronectin (FN), cell spreading, myosin light chain (MLC) phosphorylation, cytoskeletal prestress (isometric tension in the cell before vasoagonist stimulation), and the active contractile response to the vasoconstrictor endothelin-1 all increased in parallel.
机译:血管平滑肌(VSM)细胞响应来自细胞外基质的结构提示调节其收缩力的机制仍然知之甚少。在固定密度增加的固定纤连蛋白(FN)上培养肺VSM细胞时,细胞扩散,肌球蛋白轻链(MLC)磷酸化,细胞骨架预应力(血管激动剂刺激前细胞中的等轴测张力)以及对血管收缩素内皮素的主动收缩反应1全部并行增加。

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