一个H2S进化的替代催化酶生物异构连接,具有抗菌和巨重编程活性,用于全阶段的传染性伤口再生
Miaomiao He1, Zuyao Wang1, Danni Xiang1
1College of Biomedical Engineering, School of Chemical Engineering, Sichuan University, Chengdu, 610065, China.
Advanced materials (Deerfield Beach, Fla.)
|June 29, 2024
概括
这项研究引入了一种新型的硫化释放生物异构结酶 (CuFe2S3@LOD),该酶使用近红外II光对抗深层伤口感染. 该酶通过杀死细菌和重编程巨细胞来促进皮肤再生.
科学领域:
- 生物材料科学 生物材料科学
- 纳米技术 纳米技术
- 再生医学是一种再生医学.
背景情况:
- 深处伤口的致病性感染会导致巨细胞功能障碍和乳酸的积累,阻碍皮肤的再生.
- 缺氧条件加剧了这些问题,导致伤口愈合停滞不前.
研究的目的:
- 开发一种新型的硫化 (H2S) 进化的交替催化生物异构结酶 (AC-BioHJzyme),用于治疗深层感染性伤口.
- 研究该酶表现出循环酶模仿抗菌 (EMA) 活性和近红外II (NIR-II) 光激活的巨细胞重生能力的能力.
主要方法:
- 制造CuFe2S3@LOD AC-BioHJzyme,将CuFe2S3和乳酸氧化酶 (LOD) 结合在一起.
- 利用LOD耗尽乳酸并产生H2O2,然后通过过氧化酶模拟活性转化为杀菌性OH.
- 采用GPx模拟和CAT模拟活动,分别用于细菌抗氧化系统的破坏和单点氧气生成.
- 从CuFe2S3@LOD中杆H2S释放以在感染条件下维持EMA活动.
- 进行了体外和体内试验,以评估在感染性皮肤再生中的疗效.
主要成果:
- 在NIR-II光激活时,CuFe2S3@LOD证明了循环EMA活性和巨细胞重新激活能力.
- 该系统有效地杀死了细菌,促进了表皮质化和原沉积,促进了血管生成,并重新编程了巨细胞.
- 在体外和体外模型中观察到感染性皮肤再生的显著促进.
结论:
- 开发的CuFe2S3@LOD AC-BioHJzyme为深度传染性伤口愈合提供了一个有希望的对策.
- 循环酶模仿抗生素和巨细胞重新激活的策略为再生医学提供了一种新的方法.
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