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首页> 外文期刊>European Journal of Cell Biology: Journal of Deutsche Gesellschaft fur Elektronenmikroskopie: Journal of Deutsche Gesellschaft fur Zellbiologie >Dermatopontin augments angiogenesis and modulates the expression of transforming growth factor beta 1 and integrin alpha 3 beta 1 in endothelial cells
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Dermatopontin augments angiogenesis and modulates the expression of transforming growth factor beta 1 and integrin alpha 3 beta 1 in endothelial cells

机译:Dermatopontin增强血管生成并调节在内皮细胞中转化生长因子β1和整合素α3β1的表达

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摘要

Dermatopontin (DPT) is a matricellular protein with cardinal roles in cutaneous wound healing. The protein is also reported to be altered in various anomalies including cancer. The present study is aimed to unravel the role of DPT in angiogenesis which is imperative in many physiological and pathological processes. DPT's capabilities on promoting angiogenesis were assessed using various in vitro and ex vivo systems. The results indicated that DPT enhances cell motility and induces lamellipodia formation in endothelial cells. Additionally, we noticed that DPT stimulates tube formation in endothelial cells when plated on a matrigel substrate. However, it was observed that DPT had no effect on the proliferation of endothelial cells even at higher concentrations and prolonged treatment periods. Additional experiments on CAM and aortic arch assays apparently depicted that DPT promotes neovascularisation and tube sprouting, thus unraveling its prominent role in angiogenesis. Further, PCR analysis revealed that endothelial cells are devoid of DPT expression, but when exogenously supplied, modulates the expression of transforming growth factor beta 1 and integrin alpha 3 beta 1 which are reported to have crucial roles in endothelial cell behaviour during angiogenesis. In conclusion, DPT possess vital pro-angiogenic properties and thus retains promising therapeutic values in managing chronic wounds and cancer. (C) 2017 Elsevier GmbH. All rights reserved.
机译:Dermatopontin(DPT)是一种在皮肤伤口愈合中具有主要作用的原始蛋白质。据报道,蛋白质在包括癌症的各种异常中被改变。本研究旨在解开DPT在血管生成中的作用,这在许多生理和病理过程中势在必行。使用各种体外和离体系统评估DPT对促进血管生成的能力。结果表明,DPT增强了细胞活性,并在内皮细胞中诱导层状斑层形成。另外,我们注意到DPT在镀在Matrigel底物上时,DPT刺激内皮细胞中的管形成。然而,甚至在较高浓度和延长的治疗期即使在较高浓度和延长的治疗期即使在较高的浓度下也没有对内皮细胞增殖没有影响。凸轮和主动脉弓测定的其他实验显然描绘了DPT促进新生血管和管道发芽,从而揭示其在血管生成中的突出作用。此外,PCR分析表明,内皮细胞没有DPT表达,但是当外源供应时,调节转化生长因子β1和整合蛋白α3β1的表达,据报道血管生成期间内皮细胞行为具有至关重要的作用。总之,DPT具有重要的促血管生成特性,因此保留了管理慢性伤口和癌症的有希望的治疗价值。 (c)2017 Elsevier GmbH。版权所有。

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