Fuel strand-powered self-propelled electrochemical DNA machine for enzyme-free and distinctly amplified detection of nucleic acid with tunable performance.

本文提出一种燃料链驱动的自驱动DNA机器，用于无酶、超灵敏的电化学核酸检测。该策略基于燃料链驱动的靶标循环与连续邻近链间置换，实现显著信号放大。三链双链DNA（TSD）探针固定于电极表面，通过燃料链驱动的链置换电路识别靶DNA，并伴随靶标循环和燃料链结合到电极，用于信号放大与读出。结合到电极的燃料链含有突出尾部序列，可作为靶标类似物...