三金属氧化物空心片立方体和氧气空隙工程:双模式传感平台和协作检测机制的构建
Haiyang Wang1, Di Wu1, Shuqun Lao1
1Key Laboratory for Analytical Science of Food Safety and Biology (MOE & Fujian Province), Department of Chemistry, Fuzhou University, Fuzhou 350108, People's Republic of China.
Analytical chemistry
|September 1, 2025
概括
这项研究引入了一种使用纳米酶和葡萄糖氧化酶检测敏感癌症生物标志物的新型双模式传感器. 该平台提供了早期癌症查和高通量生物分析的新方法.
科学领域:
- 生物技术
- 纳米技术
- 分析化学
背景情况:
- 对于早期癌症生物标志物查的需求日益增长.
- 纳米酶为生物感知提供独特的催化和感知特性.
- 需要对癌胚抗原 (CEA) 进行敏感和可靠的检测平台.
研究的目的:
- 开发一种双模式 (色度和光热) 传感平台,用于敏感的CEA检测.
- 研究三金属氧化物纳米酶和葡萄糖氧化酶的协同作用.
- 提高人工酶的性能,用于生物分析.
主要方法:
- 将葡萄糖氧化酶与富含氧气空位的三金属氧化物纳米酶集成.
- 使用特异性免疫识别进行信号转换.
- 使用密度函数理论 (DFT) 计算来理解协同效应.
- 构建了一个双模式传感平台.
主要成果:
- 使用级联催化系统实现了CEA的敏感检测.
- 由于氧气空缺和多层形态,表现出增强的过氧酶类活性.
- 光热模式的线性范围:0.0550 ng mL-1;色度模式的线性范围:0.015100 ng mL-1
- 检测极限:14.2 pg mL-1 (光热) 和9.7 pg mL-1 (色度测量).
结论:
- 多金属组件和氧气空缺之间的协同作用显著提高了纳米酶的性能.
- 开发了一个强大的双信号输出传感平台,在真实样本中具有很好的适用性.
- 该战略为高吞吐量和多维生物分析应用提供了新的途径.
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