通过增强血管生成作用共递送去铁胺和羟基红花黄色 A 以加速糖尿病伤口愈合。
Co-delivery of deferoxamine and hydroxysafflor yellow A to accelerate diabetic wound healing via enhanced angiogenesis.
机构信息
a Institute of Pharmaceutics, College of Pharmaceutical Sciences , Zhejiang University , Hangzhou, Zhejiang , P.R. China.
b Zhejiang Provincial Corps Hospital of Chinese People's Armed Police Forces, Jiaxing , Zhejiang , P.R. China.
出版信息
Drug Deliv. 2018 Nov;25(1):1779-1789. doi: 10.1080/10717544.2018.1513608.
Nonhealing chronic wounds on foot induced by diabetes is a complicated pathologic process. They are mainly caused by impaired neovascularization, neuropathy, and excessive inflammation. A strategy, which can accelerate the vessel network formation as well as inhibit inflammatory response at the same time, makes it possible for effective diabetic ulcers treatment. Co-delivery of multiple drugs with complementary bioactivity offers a strategy to properly treat diabetic wound. We previously demonstrated that hydroxysafflor yellow A (HSYA) could accelerate diabetic wound healing through promoting angiogenesis and reducing inflammatory response. In order to further enhance blood vessel formation, a pro-angiogenic molecular called deferoxamine (DFO) was topically co-administrated with HSYA. The in vitro results showed that the combination of DFO and HSYA exerted synergistic effect on enhancing angiogenesis by upregulation of hypoxia inducible factor-1 alpha (HIF-1α) expression. The interpenetrating polymer networks hydrogels, characterized by good breathability and water absorption, were designed for co-loading of DFO and HSYA aiming to recruit angiogenesis relative cells and upgrade wound healing in vivo. Both DFO and HSYA in hydrogel have achieved sustained release. The in vivo studies indicated that HSYA/DFO hydrogel could accelerate diabetic wound healing. With a high expression of Hif-1α which is similar to that of normal tissue. The noninvasive US/PA imaging revealed that the wound could be recovered completely with abundant blood perfusion in dermis after given HSYA/DFO hydrogel for 28 days. In conclusion, combination of pro-angiogenic small molecule DFO and HSYA in hydrogel provides a promising strategy to productively promote diabetic wound healing as well as better the repair quality.
由糖尿病引起的足部慢性不愈合性溃疡是一个复杂的病理过程。它主要是由新生血管形成受损、神经病变和过度炎症引起的。一种既能加速血管网络形成又能同时抑制炎症反应的策略,为有效治疗糖尿病性溃疡提供了可能。同时递送具有互补生物活性的多种药物为适当治疗糖尿病性伤口提供了一种策略。我们之前证明,羟基红花黄色素 A (HSYA) 可以通过促进血管生成和减少炎症反应来加速糖尿病伤口愈合。为了进一步增强血管形成,我们将一种促血管生成分子去铁胺 (DFO) 与 HSYA 联合局部给药。体外结果表明,DFO 和 HSYA 的联合使用通过上调缺氧诱导因子-1α (HIF-1α) 的表达对增强血管生成具有协同作用。具有良好透气性和吸水性的互穿聚合物网络水凝胶被设计用于共载 DFO 和 HSYA,以招募血管生成相关细胞并在体内升级伤口愈合。水凝胶中的 DFO 和 HSYA 均实现了持续释放。体内研究表明,HSYA/DFO 水凝胶可以加速糖尿病伤口愈合。Hif-1α 的高表达与正常组织相似。无创超声/光声成像显示,在给予 HSYA/DFO 水凝胶 28 天后,真皮中的血液灌注丰富,伤口可完全恢复。总之,水凝胶中促血管生成小分子 DFO 和 HSYA 的联合使用为有效地促进糖尿病伤口愈合以及更好地修复质量提供了一种有前途的策略。
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