在生物医学应用的MAX阶段,修改了鲁单原子厚A层的增强过氧化酶类活性
Shuairu Zhu1,2,3, Chao He1, Huiling Tan1,4
1Department of Laboratory Medicine/Clinical Laboratory Medicine Research Center, West China Hospital, Sichuan University, Chengdu 610041, China.
ACS nano
|October 18, 2024
概括
研究人员通过将纳入V2SnC MAX阶段来增强纳米酶活性,从而产生V2(Sn0.8Ru0.2) C. 这种新型纳米酶表现出优异的过氧化酶类活性,性能优于天然酶,并使敏感生物标志物检测和抗菌应用成为可能.
科学领域:
- 材料科学 材料科学 材料科学
- 纳米技术纳米技术
- 生物医学工程 生物医学工程
背景情况:
- 纳米酶在生物医学中提供了酶替代品,但往往缺乏足够的催化活性.
- 增强纳米酶的特定活性对于实际应用至关重要.
研究的目的:
- 通过修改V2SnC MAX阶段,开发一种具有增强催化活性的新型纳米酶.
- 调查增强活动背后的机制,并探索其应用.
主要方法:
- 将鲁 (Ru) 原子纳入V2SnC MAX阶段,以创建具有单原子Ru位点的V2(Sn0.8Ru0.2) C.
- 使用X射线光电子谱学 (XPS) 和密度函数理论 (DFT) 的表征.
- 在心力衰竭生物标志物的侧流免疫试验和抗菌检测中应用.
主要成果:
- V2(Sn0.8Ru0.2) C的高过氧化酶类特异性活性为1792.6 U mg-1,超过了角过氧化酶 (HRP) 的高特异性活性.
- DFT和XPS揭示了Ru兴奋剂降低了H2O2吸附的能量屏障.
- 在横流免疫试验中,心力衰竭生物标志物的检测灵敏度为4 pg mL-1.
- 已证明具有广泛的抗菌疗效.
结论:
- 精确设计的MAX相纳米酶可以实现高特异性活性,与自然酶相美.
- V2 ((Sn0.8Ru0.2) C是敏感诊断和抗菌疗法的有希望的候选者.
- 这项工作为开发基于MAX相材料的先进纳米酶提供了途径.
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