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- W1987109237 abstract "An ultrasensitive aptamer-based bio bar code immunomagnetic separation and electrochemiluminescence (IM-ECL) method for the detection of protein is developed. The target protein is captured by biotin-labeled aptamer (biotin probe) and [Ru(bpy)3]2+ (TBR)-Au bio bar code-labeled aptamer (ECL nanoprobe), to form a double aptamer–protein sandwich complex. The complex is then immobilized on the streptavidin microbeads through biotin–streptavidin linkage and detected by ECL assay. The ECL signal of the target protein is amplified by the TBR-bio bar code DNAs. As an example, platelet-derived growth factor B-chain homodimer (PDGF-BB) was detected by the method. Experimental results show that the detection limit of the assay is 1 pM of PDGF-BB. A calibration curve with a linearity range from 1 pM to 10 nM is established, thus, make quantitative analysis possible. The method has been used to detect PDGF-BB in fetal calf serum with minimum background interference. Due to the wide availability of aptamer for numerous proteins, this aptamer-based bio bar code IM-ECL method holds great promise in protein detection." @default.
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- W1987109237 date "2012-05-01" @default.
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- W1987109237 title "Ultrasensitive aptamer-based bio bar code immunomagnetic separation and electrochemiluminescence method for the detection of protein" @default.
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- W1987109237 doi "https://doi.org/10.1016/j.aca.2012.03.006" @default.
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