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- W1995763457 abstract "Monitoring proteins in real time and in homogeneous solution has always been a difficult task. We have applied a fluorophore-labeled molecular probe based on a high-affinity platelet-derived growth factor (PDGF) aptamer for the ultrasensitive detection of PDGF in homogeneous solutions. The aptamer is labeled with fluorescein to specifically bind with the PDGF protein. Fluorescence anisotropy is used for the real-time monitoring of the binding between the aptamer and the protein. When the labeled aptamer is bound with its target protein, the rotational motion of the fluorophore attached to the complex becomes much slower because of an increased molecular weight after binding, resulting in a significant fluorescence anisotropy change. Using the anisotropy change, we are able to detect the binding events between the aptamer and the protein in real time and in homogeneous solutions (detection without separation). This assay is highly selective and ultrasensitive. It can detect PDGF in the subnanomolar range. The new method for protein detection is simple and inherits all of the advantages of molecular aptamers. Efficient oncoprotein detection using aptamer-based fluorescence anisotropy measurement will find wide applications in protein monitoring, in cancer diagnosis as well as other studies in which protein analysis is important." @default.
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- W1995763457 date "2001-11-03" @default.
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- W1995763457 title "Molecular Aptamer for Real-Time Oncoprotein Platelet-Derived Growth Factor Monitoring by Fluorescence Anisotropy" @default.
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- W1995763457 doi "https://doi.org/10.1021/ac010703e" @default.
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