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内在的动力控制使可扩展和超灵敏的单分子传感器成为可能

Zhencai Xu¹, Qiang Zeng², Zhuoyin Liu³

¹College of Life Science, Qingdao University, Qingdao, Shandong 266071, China.

|October 9, 2025

概括

一个新的动态单分子传感 (DSMS) 平台使用优化的纳米粒子大小和缓冲条件来进行超敏感的生物标记检测. 这种方法可以实现对血栓素和HIV-1 p24抗原的女性口敏度,而无需进行探针修改.

科学领域:

生物物理学的生物物理.
纳米技术纳米技术
生物标志物检测检测生物标志物检测

背景情况:

动态单分子传感 (DSMS) 为分子相互作用提供了高灵敏度.
当前的DSMS平台面临的简单性和可扩展性的局限性是由于探头重新设计或外部力调制.
优化内在参数对于推进DSMS技术至关重要.

研究的目的:

开发一个内在规范的DSMS平台,用于超敏感生物标志物检测.
通过优化纳米粒子大小和缓冲离子强度来克服现有的DSMS系统的局限性.
为临床诊断建立一个可扩展和强大的传感策略.

主要方法:

在DSMS中开发了动态模式的理论模型.
经验优化了DSMS系统,使用平均绑定停留时间和总绑定事件.
使用了150nm聚乙烯纳米粒子和150mM NaCl缓冲条件.

主要成果:

达到了血栓素 (213.9 fM) 和HIV-1 p24抗原 (4.3 fM) 的女性粒度检测极限.
在使用停留时间过的稀释血清中表现出极好的特异性.
在复杂的生物矩阵中验证了平台的稳定性.

结论:

设计的DSMS平台能够有效地进行单分子传感,无需进行探头修改或外部启动.
这一策略为高性能生物标志物检测提供了一个可扩展的解决方案.
这些发现为先进的临床诊断和临床应用铺平了道路.

关键词:

生物标志物检测生物标志物检测动态单分子传感感应.内在动态建模的内在动态建模离子强度工程离子强度工程纳米粒子大小优化优化

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