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首页> 外文期刊>Journal of drug targeting >vwF A3-GPI modification of EPCs accelerates reendothelialization of injured vessels via collagen targeting in mice
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vwF A3-GPI modification of EPCs accelerates reendothelialization of injured vessels via collagen targeting in mice

机译:EPC的VWF A3-GPI改性通过靶向小鼠的胶原蛋白加速了受伤血管的戒律化

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摘要

Despite the potential of endothelial progenitor cells (EPCs) to incorporate into sites of vessel injury and differentiate into endothelial cells, thereby contributing to the improvement of endothelial function, reendo-thelialization in some patients is insufficient for the prevention of abnormal endothelial growth because there is a lack of specific guided signals and low levels of congregation of the EPCs to the injured areas. If some type of molecular tool was able to guide EPCs specifically to the injured vessels, however, then the efficacy of cell implantation would improve. Here, we designed a strategy to modify these cells and improve their ability to directly target the injured vessels. As a homing molecule, we selected extracellular matrix components, such as collagen, which is exposed on catheter-injured arteries. To promote the adhesion of the EPCs to collagen, we painted the primary EPCs with a recombinant, glycosylphosphatidylinositol (GPI)-linked high-affinity ligand for collagen that is termed von Willebrand factor A3-GPI. These painted EPCs specifically bound to collagen in vitro and traveled to the damaged vessel in vivo. This novel strategy may allow for significant advancements in EPCs transplantation treatment.
机译:尽管内皮祖细胞(EPC)掺入血管损伤部位并分化为内皮细胞,因此有助于改善内皮功能,但一些患者的Reendo-ocialization不足以预防异常的内皮生长,因为有缺乏特定的引导信号和EPC会征收对受伤区域的群体。然而,如果某种类型的分子工具能够将EPC专门引导到受伤的血管上,那么细胞植入的功效将改善。在这里,我们设计了一种改变这些细胞的策略,并改善他们直接瞄准受伤血管的能力。作为归巢分子,我们选择了细胞外基质组分,例如胶原蛋白,其暴露在导管伤害的动脉上。为了促进EPC对胶原蛋白的粘附,我们用重组糖基磷脂酰肌醇(GPI) - 链接高亲和力配体的胶原涂上了胶原,其被称为von Willebrand因子A3-GPI。这些涂漆的EPCS在体外特异性地与胶原蛋白结合并在体内行进到受损的血管。这种新的策略可能允许EPCS移植治疗中的显着进步。

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