重血管化驱动的纳米酶疗法:破坏ROS的恶性循环和不足的血管化,用于慢性不愈合的伤口治疗
Qiuxue Jiang1, Meixia Zhang2, Yuqi Yang3
1Key Laboratory of Special Functional and Smart Polymer Materials of Ministry of Industry and Information Technology, School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an, 710054, China.
Biomaterials
|February 21, 2026
概括
这项研究引入了一种新型纳米酶 (TCC),可以有效地清除活性氧物种 (ROS),并促进血管生长. 这种双重作用通过破坏氧化应激和不良血管化的有害循环来解决慢性不愈合的伤口.
科学领域:
- 生物材料科学 生物材料科学
- 再生医学是一种再生医学.
- 纳米技术纳米技术
背景情况:
- 慢性不愈合的伤口涉及损害血管生成和过度反应性氧物种 (ROS) 生成的有害循环,由炎症恶化.
- 现有的治疗方法不足以管理这些伤口复杂的病理生理学.
研究的目的:
- 设计一种复合纳米酶 (TCC),能够同时解决ROS积累和促进慢性伤口中的血管生成.
- 研究ROS清理和血管修复的协同效应,以有效的伤口管理.
主要方法:
- 复合纳米酶 (TCC) 的制造,使用基于的地质化伊米达索酸框架 (Co-ZIF) 封装纳米集群 (CeNC) 和.
- 通过超氧化基的催化分解评估TCC的ROS清除活性.
- 通过分析离子释放,HIF-1α稳定和VEGF表达 in vitro和 in vivo来评估TCC的亲血管效应.
主要成果:
- 通过增强CeNC的超氧化基分解,TCC纳米酶表现出显著的ROS清理能力.
- 从TCC释放的离子通过稳定缺氧诱导因子-1α和上调VEGF促进了血管生成.
- TCC有效地破坏了ROS积累和血管缺陷的病原性循环,在伤口模型中增强了亲血管性结果.
结论:
- 开发的TCC纳米酶通过将ROS清理与血管修复相结合,为慢性不愈合的伤口提供了双重作用的治疗策略.
- 这种方法对综合性伤口管理具有前景,并具有针对氧化应激和血管病理的再生疗法的翻译潜力.
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