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使用CRISPR/Cas12a功能化的纳米线场效应晶体管传感器,用于超灵敏检测病原核酸

Yazhao Li¹, Yanzhi Dou², Zhongming Lu²

¹State Key Laboratory of Transducer Technology, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, 865 Changning Road, Shanghai, 200050, China; University of Chinese Academy of Sciences (UCAS), Beijing, 100190, China.

Biosensors & bioelectronics

|September 1, 2025

概括

这项研究引入了一种新型的CRISPR/Cas12a功能化纳米线场效应晶体管 (FET) 生物传感器,用于快速准确的病原体DNA检测. 该系统在短短10分钟内就能达到Bacillus anthracis DNA的检测极限.

科学领域:

生物技术
纳米技术
分子生物学

背景情况:

准确的病原核酸检测对公共健康至关重要.
现有的场效晶体管 (FET) 生物传感器面临来自病原体的长DNA的挑战,包括低效率和精度.
直接检测病原体DNA受到核酸折叠和纠等问题的阻碍.

研究的目的:

开发一种新的纳米线FET生物传感策略,用于增强病原核酸的直接检测.
克服目前FET生物传感器在识别和量化长病原体DNA方面的局限性.
提高病原体DNA检测的灵敏度,准确性和速度.

主要方法:

使用CRISPR/Cas12a系统实现纳米线FET的功能化.
使用Cas12a/crRNA复合体快速扫描和精确切割目标双链DNA (dsDNA).
使用Cas12a/crRNA来分割长dDNA,减轻折叠/纠问题,并确保在Debye长度内分布.

主要成果:

在10分钟内获得Bacillus anthracis dsDNA的定量检测.
达到了原子分子 (aM) 的检测极限.
与全基因组样本的数字PCR相比,具有0. 912的相关系数.

结论:

拟议的CRISPR/Cas12a功能化的FET生物传感策略显著提高了直接检测病原体DNA的灵敏度和准确性.
这种方法有效地解决了由DNA折叠和纠引起的性能降低.
该策略为快速,灵敏和准确的病原核酸检测提供了有价值和可靠的方法.

关键词:

类人类在CRISPR/Cas12a中核酸纳米线FET传感器超敏感的

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