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自启动的同热聚合工程在现场生成铜纳米颗粒,用于检测单管生物标志物

Shasha Zeng¹, Jintao Chen¹, Chunjiao Qi¹

¹Hubei Key Laboratory of Pollutant Analysis & Reuse Technology, College of Chemistry and Chemical Engineering, Hubei Normal University, Huangshi, 435002, Hubei, China.

Analytica chimica acta

|April 5, 2025

概括

这项研究引入了一种新的生物传感方法,使用自启动异热聚合 (SPIP) 来产生DNA模板铜纳米粒子 (CuNPs),用于敏感,无标签检测ALP和APE1.1等生物标志物.

科学领域:

生物技术是生物技术.
纳米技术纳米技术
分子诊断学分子诊断学

背景情况:

传统的异热聚合生物传感因非特异性光染色而遭受高背景噪声.
具有DNA模板的铜纳米粒子 (CuNPs) 提供无标签,低背景信号传输,具有快速准备和大的斯托克斯转移.
由于其独特的特性,CuNPs是高级分子诊断的理想信号源.

研究的目的:

开发敏感的,无标签的生物传感方法,使用通过自启动异热聚合 (SPIP) 在现场生成DNA模板CuNPs.
调整SPIP战略以检测特定的生物标志物,包括性酸酶 (ALP) 和阿普里尼克/阿普里米尼克内核酶1 (APE1).

主要方法:

为SPIP设计了一种形初级DNA,具有富含AT的茎环和PS修改的发针.
利用聚合酶启动的酶扩展和自我折叠来积累富含AT的模板,以快速形成CuNP.
通过脱化检测ALP,通过触发的DNA形态转换检测APE1.

主要成果:

在单管格式中实现了生物标志物的敏感和无标签检测.
通过利用性酸酶活性,证明了SPIP成功适应ALP检测.
通过探测器实现了敏感的APE1检测,由APE1活动触发的DNA形状转换.

结论:

开发的SPIP工程CuNP一代提供了一个强大而简单的传感策略.
这些方法可以在真实生物样本中准确分析生物标志物,包括人体血清和细胞.
这项工作为纳米信号放大提供了一种新的方法,并为分子诊断提供了一个有希望的平台.

关键词:

性酸酶是一种性酸酶.阿普里尼克/阿普里米尼克内核酶.铜纳米粒子铜纳米粒子光传感传感器是一种光传感.异热放大器的同热放大方式

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