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- W2022322418 abstract "A sensitive and selective electrochemical DNA sensor was developed for the detection of BCR/ABL fusion gene in chronic myelogenous leukemia (CML). Firstly, graphene sheets (GS) suspension was prepared with the aid of chitosan (CS) solution and then fabricated onto the glassy carbon electrode (GCE), followed by the electro-polymerization of aniline to form the PANI layer, then, Au nanoparticles (AuNPs) were electro-deposited onto the modified GCE to immobilize the capture probes. The capture probe employed a hairpin structure and dually labeled with a 5'-SH and a 3'-biotin. After hybridization with the target DNA, hairpin structure was compelled to open and 3'-biotin was forced to stay away from the electrode surface. As a result, streptavidin-alkaline phosphatase (SA-AP) was covalently binded to the capture probe via biotin-avidin system. Reduction currents were then generated after catalyzing the hydrolysis of the electroinactive 1-naphthyl phosphate (1-NP) to 1-naphthol and monitored by differential pulse voltammetry (DPV). Under optimum conditions, the amperometric signals increased linearly with the target DNA concentrations (10 pM to 1000 pM), and the DNA sensor exhibited a detection limit as low as 2.11 pM (S/N=3) with an excellent differentiation ability, and the proposed method showed acceptable stability and reproducibility. It has been applied for assay of BCR/ABL fusion gene from real samples with satisfactory results." @default.
- W2022322418 created "2016-06-24" @default.
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- W2022322418 date "2014-01-01" @default.
- W2022322418 modified "2023-10-16" @default.
- W2022322418 title "Graphene sheets, polyaniline and AuNPs based DNA sensor for electrochemical determination of BCR/ABL fusion gene with functional hairpin probe" @default.
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- W2022322418 doi "https://doi.org/10.1016/j.bios.2013.07.049" @default.
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