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一个基于aptamer的"Gate-lock-key"策略,用于金属有机框架纳米酶催化多药耐药细菌的色度检测

Ruiwen Li¹, Hao Shen², Dandan Shi³

¹Department of Infectious Diseases, The First Affiliated Hospital of Ningbo University, Ningbo, Zhejiang, 315211, China.

Mikrochimica acta

|February 7, 2026

概括

一个新的生物传感平台使用aptamer-gated金属有机框架来高度敏感地检测多药耐药细菌 (MDRB). 该方法实现了关键病原体的超低检测极限,提供可靠的现实微生物检测.

科学领域:

材料科学材料科学材料科学
生物技术是生物技术.
分析化学分析化学

背景情况:

耐多药细菌 (MDRB) 构成了严重的全球健康威胁,需要先进的检测方法.
现有的生物传感平台往往缺乏早期和准确的MDRB识别所需的灵敏度和特异性.
金属有机框架 (MOF) 由于其高表面积和可调节结构,为生物传感应用提供了独特的特性.

研究的目的:

开发一个高度敏感的aptamer-gated金属有机框架为MDRB检测的生物传感平台.
为了整合aptamers与UiO-66-NH2 MOFs为一个"门"感应系统,能够捕获特定的细菌和信号生成.
评估平台在检测特定MDRB菌株方面的表现,包括新德里金属β-乳糖酶-1 Klebsiella pneumoniae (NDM-1 KP) 和多药耐药Acinetobacter baumannii (MDR-AB).

主要方法:

构建一个充满3,3',5,5'-四甲基二 (TMB) 的aptamer-gated UiO-66-NH2 MOF系统.
采用阿帕特马作为特定的"门"开关,它们与目标细菌结合,导致TMB释放.
使用PCN-224-Mn纳米酶催化TMB氧化,产生可检测的色度信号.

主要成果:

生物传感平台展示了用于检测NDM-1 KP和MDR-AB的广泛线性范围.
实现了超高灵敏度,检测极限低至NDM-1 KP的5 CFU/mL和MDR-AB的7 CFU/mL.
尖的恢复实验证实了平台在复杂的现实世界样本中的高可靠性和稳定性.

结论:

开发的APTAMER-GATED MOF生物传感平台为敏感和特定的MDRB检测提供了有效的解决方案.
该平台表现出色的性能,为解决微生物检测在实际场景中的挑战提供了一个有前途的工具.
这种方法突显了集成aptamers和MOFs在先进生物传感应用中的潜力.

关键词:

适应器关闭的MOF是适应器关闭的.颜值测量生物传感平台颜值测量生物传感平台多种耐药性细菌的多种耐药性细菌.纳米酶纳米酶是一种纳米酶.

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