Highly Selective and Sensitive Electrochemiluminescence Biosensor for p53 DNA Sequence Based on Nicking Endonuclease Assisted Target Recycling and Hyperbranched Rolling Circle Amplification.

本文设计了一种基于内切核酸酶辅助靶标循环与超支化滚环扩增（HRCA）级联信号放大的超灵敏、高选择性电化学发光（ECL）生物传感器，用于检测p53 DNA序列。首先，生物素修饰的发夹捕获DNA（HP）探针通过链霉亲和素固定在磁珠（PMPs）表面；靶标DNA与HP环区杂交使发夹展开，形成含Nt.BstNBI特异性切割位点的双链DNA。N...