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度失衡驱动的核酸电路用于通过混合反应的DNA模板的银纳米集群通过杂交引起的脑炎病毒检测

Wenfang Wang¹, Nan Liu², Yicheng Zhao^1,3

¹State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, College of Basic Medical Science, Jilin University, Changchun 130061, China.

|December 24, 2025

概括

一种新的测定方法能够快速准确地检测到没有酶的感染性脑炎病毒 (TBEV) RNA. 这种便携式系统为TBEV和其他RNA病毒提供了低成本的诊断策略.

科学领域:

分子生物学分子生物学
纳米技术纳米技术
病毒学病毒学

背景情况:

传染性脑炎病毒 (TBEV) 是一种重要的神经向性弗拉维病毒,需要敏感和早期检测方法.
当前的诊断方法可能缺乏广泛应用所需的灵敏度,速度或成本效益,特别是在资源有限的环境中.

研究的目的:

开发一种没有酶的,直接检测TBEV的RNA检测系统.
创建一个灵敏,快速,便携式的诊断试验,用于TBEV RNA检测.

主要方法:

开发一个度失衡驱动的核酸电路 (CIDNC) 与DNA模板银纳米集群 (DNA-AgNCs) 集成.
在同热条件下利用链位移反应来扩大信号,并将TBEV RNA/cDNA转化为光.
使用血样本和溶解病毒的测试验证.

主要成果:

实现了低检测极限:cDNA的0.023nM和RNA的0.035nM.
证明了单基不匹配歧视能力.
在临床样本 (血) 和溶解病毒中成功检测到病毒RNA,其恢复率高 (97-98%).

结论:

开发的CIDNC-DNA-AgNCs系统为TBEV RNA检测提供了一个快速 (25分钟),无酶和高度敏感的方法.
该系统的便携性和可编程性使其成为TBEV和其他RNA病毒的有希望的,低成本的诊断工具,特别是在资源有限的环境中.
这种方法为传染病的核酸检测技术带来了重大进步.

关键词:

DNA模板的银色纳米集群.传播的脑炎病毒.核酸电路中的核酸.单核酸感应是一种单核酸感应.

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