在普鲁士蓝色纳米酶中通过化酸 doping 引导 H2O2溶解途径产生 ROS
Guancheng Wang1, Xiaoli Wei1, Kaizheng Feng1
1State Key Laboratory of Digital Medical Engineering, Jiangsu Key Laboratory for Biomaterials and Devices, School of Biological Science and Medical Engineering & Basic Medicine Research and Innovation Center of Ministry of Education, Southeast University, Nanjing, China.
Nature communications
|October 31, 2025
概括
普鲁士蓝色纳米粒子 (PBNPs) 可以被设计成产生反应性氧物种 (ROS),超越它们传统的抗氧化作用. 这一突破使污染物降解和癌症治疗的新应用成为可能.
科学领域:
- 纳米材料科学 科学 纳米材料科学
- 催化剂是一种催化剂.
- 生物医学工程 生物医学工程
背景情况:
- 普鲁士蓝色纳米粒子 (PBNPs) 是已知的纳米酶,具有清除活性氧物种 (ROS) 的能力,主要用于抗氧化疗法.
- 调节PNNP中的铁 (Fe) 协调环境可以改变它们的催化功能.
研究的目的:
- 研究Fe协调环境如何影响PBNPs的催化特性,从而使ROS产生.
- 为新型应用开发具有亲氧化功能的PNNP.
主要方法:
- 使用了结合理论 (ab initio分子动力学) 和实验方法的方法.
- 在具有不同协调数 (FeN4与FeN5) 的Fe位点研究了H2O2溶解机制.
- 合成的 (Cs) 添加剂的PBNP (Cs-PBs) 具有受控的协调号码.
主要成果:
- 理论计算显示了基于Fe协调的独特的H2O2分解路径.
- Cs-doping成功地创造了具有更高协调数量的PNNP,并预测了激素的产生.
- 实验验证证证实了Cs-PBs中的ROS生成,显示出超高的过氧化酶类活性 (1182.26 U·mg−1).
结论:
- 铁的协调环境是重新配置PBNP催化特性以产生ROS的关键因素.
- Cs-PBs表现出增强的ROS生成,在污染物降解和化学动力学治疗中表现优于传统的PNNP.
- 这项研究将PBNP的应用范围扩大到抗氧化作用之外,为环境和治疗创新铺平了道路.
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