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首页> 外文期刊>Journal of Cellular Physiology >Glycated collagen and altered glucose increase endothelial cell adhesion strength
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Glycated collagen and altered glucose increase endothelial cell adhesion strength

机译:胶原蛋白糖化和改变葡萄糖增加内皮细胞粘附强度

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摘要

Cell adhesion strength is important to cell survival, proliferation, migration, and mechanotransduction, yet changes in endothelial cell adhesion strength have not yet been examined in diseases such as diabetes with high rates of cardiovascular complications. We therefore investigated porcine aortic endothelial cell adhesion strength on native and glycated collagen-coated substrates and in low, normal, and high glucose culture using a spinning disc apparatus. Adhesion strength increased by 30dynes/cm2 in cells on glycated collagen as compared to native collagen. Attachment studies revealed that cells use higher adhesion strength αvβ3 integrins to bind to glycated collagen instead of the typical α2β1 integrins used to bind to native collagen. Similarly, endothelial cells cultured in low and high glucose had 15dynes/cm2 higher adhesion strength than cells in normal glucose after 2 days. Increased adhesion strength was due to elevated VEGF release and intracellular PKC in low and high glucose cells, respectively. Thus glucose increased endothelial cell adhesion strength via different underlying mechanisms. These adhesion strength changes could contribute to diabetic vascular disease, including accelerated atherosclerosis and disordered angiogenesis.
机译:细胞粘附强度是重要的细胞生存、增殖、迁移和转导,但内皮细胞的变化细胞粘附强度尚未检查与高水平的疾病,如糖尿病心血管并发症。研究了猪主动脉内皮细胞粘附强度在本机和糖化collagen-coated基质和低,正常,使用一个旋转的圆盘和高葡萄糖文化仪器。30达因/厘米2细胞在胶原蛋白糖化而原生胶原蛋白。显示电池使用提高粘附强度αβ3 v整合蛋白绑定到糖化胶原蛋白而不是典型的α2β1整合素绑定到本地胶原蛋白。细胞培养在低和高葡萄糖15达因/厘米2粘附强度高于细胞在正常葡萄糖后2天。粘附强度升高VEGF释放和胞内PKC在低和高葡萄糖的细胞,分别。增加内皮细胞粘附强度通过不同的潜在机制。强度的变化可能导致糖尿病血管疾病,包括加速动脉粥样硬化和无序血管生成。

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