Photoelectrochemical DNA Biosensor Based on Dual-Signal Amplification Strategy Integrating Inorganic-Organic Nanocomposites Sensitization with λ-Exonuclease-Assisted Target Recycling.

本文提出一种基于双信号放大策略的增强型光电化学（PEC）DNA生物传感器，用于高灵敏、高选择性检测DNA序列。该策略将无机-有机纳米复合敏化与λ-外切酶（λ-Exo）辅助靶标循环相结合。以慢性髓系白血病（CML）BCR/ABL融合基因b3a2型短DNA序列为靶标（tDNA）。ZnO纳米片上沉积CdS纳米晶形成ZnO/CdS异质纳米结...