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- W4283387358 abstract "Herein, driven by the need of highly-efficient DNAzyme-amplified detection strategy, a novel 3D DNAzyme motor was designed as a biosensor platform for realizing sensitive detection of target DNA. The 3D DNAzyme motor was composed of target-activated DNAzyme nanowires and substrates H1-Fc that co-immobilized on Au@Fe3O4 nanoparticles (Au@Fe3O4NPS) surface, possessing high local concentration of DNA reactants and shortened distance between DNAzyme and substrates for enhancing electrochemical signal. Compared with traditional DNAzyme-powered machines, the target-activated DNAzyme nanowires of 3D DNAzyme motor had greater flexibility and more powerful cleavage capability without troublesome sequence optimization, which overcame the space limitation and simultaneously interacted with adjacent and distant substrates H1-Fc to output a large amount of cleavage products with high signal response. Therefore, on account of the above-mentioned merits of nanoparticles localization DNA design and DNAzyme nanowires, the reported 3D DNAzyme motor ingeniously overcame many defects existing in traditional DNAzyme-amplified detection strategies such as low reactants concentration, limited flexibility of DNAzyme and small DNAzyme swing range, realizing the sensitive detection of target DNA with a detection limit of 1.7 fM ranging from 5 fM to 50 nM. Impressively, the 3D DNAzyme motor here presented a new strategy to achieve effective DNAzyme signal amplification and provided a reference for the assembly of various and functional 3D DNA machines in the future." @default.
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- W4283387358 date "2022-12-01" @default.
- W4283387358 modified "2023-10-18" @default.
- W4283387358 title "A highly-efficient 3D DNAzyme motor for sensitive biosensing analysis" @default.
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- W4283387358 doi "https://doi.org/10.1016/j.talanta.2022.123683" @default.
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