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A Label-Free Fluorescent AND Logic Gate Aptasensor for Sensitive ATP Detection
作者:Jingjing Zhang, Chunzheng Yang, Chaoqun Niu, Chen Liu, Xuepin Cai, Jie Du*, Yong Chen
關鍵字:ATP detection, label-free fluorescence, enzyme-free, graphene oxide, logic gate
論文來源:期刊
具體來源:Sensors 2018, 18, 3281
發(fā)表時間:2018年

In this study, a label-free fluorescent, enzyme-free, simple, highly sensitive AND logic

gate aptasensor was developed for the detection of adenosine triphosphate (ATP). Double-stranded deoxyribonucleic acid (DNA) with cohesive ends was attached to graphene oxide (GO) to form an aptasensor probe. ATP and single-stranded DNA were used as input signals. Fluorescence intensity of PicoGreen dye was used as an output signal. The biosensor-related performances, including the logic gate construction, reaction time, linearity, sensitivity, and specificity, were investigated and the results showed that an AND logic gate was successfully constructed. The ATP detection range was found to be 20 to 400 nM (R2 = 0.9943) with limit of detection (LOD) of 142.6 pM, and the sensitivity range was 1.846 × 106 to 2.988 × 106 M?1. This method for the detection of ATP has the characteristics of being simple, low cost, and highly sensitive.

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