一个红细胞模板铁单原子纳米酶用于伤口愈合
Xiaonan Wang1,2, Ting Liu3,4, Mengxia Chen3,5
1CAS Engineering Laboratory for Nanozyme, Key Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Chaoyang, Beijing, 100101, China.
Advanced science (Weinheim, Baden-Wurttemberg, Germany)
|December 6, 2023
概括
研究人员开发了一种新的红细胞模板纳米酶,具有统一的单原子铁位点. 这种仿生催化剂增强了过氧化酶的活性,并通过将催化剂与光热效应相结合,促进了伤口愈合.
科学领域:
- 生物材料科学 生物材料科学
- 纳米技术纳米技术
- 酶模仿的酶模仿者
背景情况:
- 单原子纳米酶通过模仿自然酶,提供卓越的催化活性.
- 目前的合成方法难以实现统一的单原子活性位.
- 红细胞含有血红蛋白与内在的血红素,一个潜在的单原子铁来源.
研究的目的:
- 开发一种用于合成具有均单原子FeN4活性位点的纳米酶的简单策略.
- 研究这些红细胞模板纳米酶 (ETN) 的催化活性和伤口愈合潜力.
- 探索ETN的多功能性质,包括血液静止和抗菌活性.
主要方法:
- 使用了红细胞模板策略,包括细胞固定,多孔盐化和高温碳化.
- 采用血红蛋白的半膜作为单原子铁活性位点 (FeN4) 的来源.
- 描述了由此产生的纳米酶的结构,组成和催化活性,包括物种依赖性表现.
主要成果:
- 成功合成了从血红蛋白中获得的具有均分布的单原子FeN4活性位的ETN.
- ETN表现出增强的过氧化酶类活性,而小鼠ETN表现出更高的效率.
- 类似蜂的ETN结构促进了血液静止,它们表现出结合的抗微生物和光热治疗效果.
结论:
- 红细胞模板合成为具有均单原子活性位的多功能纳米酶提供了一条简单的途径.
- 由于其催化,静血和抗菌性质,ETN在伤口愈合应用中表现有前途.
- 这种方法利用生物源的内在铁结构,用于先进的纳米材料制造.
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