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- W2111570757 abstract "The present study reports a proof-of-principle for a sensitive genotyping assay approach that can detect single nucleotide polymorphisms (SNPs) based on fluorescence anisotropy measurements through a core-shell fluorescent nanoparticles assembly and ligase reaction. By incorporating the core-shell fluorescent nanoparticles into fluorescence anisotropy measurements, this assay provided a convenient and sensitive detection assay that enabled straightforward single-base discrimination without the need of complicated operational steps. The assay was implemented via two steps: first, the hybridization reaction that allowed two nanoparticle-tagged probes to hybridize with the target DNA strand and the ligase reaction that generated the ligation between perfectly matched probes while no ligation occurred between mismatched ones were implemented synchronously in the same solution. Then, a thermal treatment at a relatively high temperature discriminated the ligation of probes. When the reaction mixture was heated to denature the duplex formed, the fluorescence anisotropy value of the perfect-match solution does not revert to the initial value, while that of the mismatch again comes back as the assembled fluorescent nanoparticles dispart. The present approach has been demonstrated with the discrimination of a single base mutation in codon 12 of a K-ras oncogene that is of significant value for colorectal cancers diagnosis, and the wild type and mutant type were successfully scored. Due to its ease of operation and high sensitivity, it was expected that the proposed detection approach might hold great promise in practical clinical diagnosis." @default.
- W2111570757 created "2016-06-24" @default.
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- W2111570757 date "2007-09-17" @default.
- W2111570757 modified "2023-09-25" @default.
- W2111570757 title "A Sensitive Fluorescence Anisotropy Method for Point Mutation Detection by Using Core–Shell Fluorescent Nanoparticles and High-Fidelity DNA Ligase" @default.
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- W2111570757 doi "https://doi.org/10.1002/chem.200700195" @default.
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