Madhyastha R, Madhyastha H, Nakajima Y, Omura S, Maruyama M
Department of Applied Physiology, Faculty of Medicine, University of Miyazaki, Miyazaki, Japan.
Pathophysiol Haemost Thromb. 2010;37(2-4):59-66. doi: 10.1159/000321375. Epub 2010 Nov 12.
Urokinase plasminogen activator (uPA) plays a vital role in the early phases of wound healing by aiding fibrin dissolution and promoting the migration, proliferation, and adhesion of various cells to the wound bed. The efficacy of botanicals in healing wounds is an area of active research. Among these, curcumin, a yellow pigment abundant in turmeric rhizome, has been the center of extensive studies. This study focused on the effect of curcumin on uPA expression and its consequence on fibrin dissolution and cellular migration. Treatment of human fibroblast cells with curcumin caused an upregulation of uPA mRNA and protein. Activation of JNK and p38 MAPK signal pathways was necessary for the upregulation of uPA. Curcumin treatment resulted in an increase in fibrinolytic activity and cell migration towards the wound area. The involvement of uPA in fibrinolysis and cell migration was confirmed by zymography and siRNA studies, respectively.
尿激酶型纤溶酶原激活剂(uPA)通过协助纤维蛋白溶解以及促进各种细胞向伤口床的迁移、增殖和黏附,在伤口愈合的早期阶段发挥着至关重要的作用。植物药在伤口愈合方面的功效是一个活跃的研究领域。其中,姜黄素是姜黄根茎中丰富的黄色色素,一直是广泛研究的核心。本研究聚焦于姜黄素对uPA表达的影响及其对纤维蛋白溶解和细胞迁移的作用。用姜黄素处理人成纤维细胞导致uPA mRNA和蛋白上调。JNK和p38 MAPK信号通路的激活是uPA上调所必需的。姜黄素处理导致纤溶活性增加以及细胞向伤口区域迁移。分别通过酶谱分析和小干扰RNA(siRNA)研究证实了uPA参与纤维蛋白溶解和细胞迁移。