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- W2947596877 abstract "In this study, we designed a fluorescence enhancement strategy based on silver nanoparticle (AgNP) aggregates for the detection of hepatitis B virus DNA sequences. AgNPs were functioned with recognition probes (Cy3-probe) and hybrid probes (Oligomer-A and Oligomer-B). The presence of target DNA mediated the formation of sandwich complexes between the immobilized capture probes and the functionalized AgNPs, which was followed by hybridization-induced formation of AgNP aggregates. The fluorescent intensity could be extremely amplified by both the increasing number of fluorophores and metal enhanced fluorescence (MEF) effect. Under optimal conditions, this method achieved a detection limit of 50 fM which was 1560-fold lower than that of un-enhanced fluorescent assays. It was illustrated that the HBV DNA concentrations ranging from 100 fM to 10 nM had a good log-linear correlation with the corresponding fluorescent intensity (R = 0.991). Moreover, this method had high specificity both for distinguishing single-base mismatches and identifying target DNA under the interference of genomic DNA. This fluorescent microarray had high-throughput analytical potential and could apply to many other disease diagnoses." @default.
- W2947596877 created "2019-06-07" @default.
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- W2947596877 date "2019-10-01" @default.
- W2947596877 modified "2023-09-23" @default.
- W2947596877 title "Enzyme-free fluorescence microarray for determination of hepatitis B virus DNA based on silver nanoparticle aggregates-assisted signal amplification" @default.
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- W2947596877 doi "https://doi.org/10.1016/j.aca.2019.05.066" @default.
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