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- W2044431969 abstract "Successful development of an ultrasensitive and highly specific electrochemical aptasensor for thrombin based on amplification of aptamer–gold nanoparticles–horseradish peroxidase (aptamer–AuNPs–HRP) conjugates was reported. In this electrochemical protocol, aptamer1 (Apt1) was immobilized on core/shell Fe3O4/Au magnetic nanoparticles (AuMNPs) and served as capture probe. Aptamer2 (Apt2) was dual labeled with AuNPs and HRP and used as detection probe. In the presence of thrombin, the sandwich format of AuMNPs–Apt1/thrombin/Apt2–AuNPs–HRP was fabricated. Remarkable signal amplification was realized by taking the advantage of AuNPs and catalytic reactions of HRP. Other proteins, such as human serum albumin, lysozyme, fibrinogen, and IgG did not show significant interference with the assay for thrombin. Linear response to thrombin concentration in the range of 0.1–60 pM and lower detection limit down to 30 fM (S/N = 3) was obtained with the proposed method. This electrochemical aptasensor is simple, rapid (the whole detection period for a thrombin sample is less than 35 min), sensitive and highly specific, it shows promising potential in protein detection and disease diagnosis." @default.
- W2044431969 created "2016-06-24" @default.
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- W2044431969 date "2011-01-01" @default.
- W2044431969 modified "2023-10-16" @default.
- W2044431969 title "Ultrasensitive electrochemical aptasensor for thrombin based on the amplification of aptamer–AuNPs–HRP conjugates" @default.
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- W2044431969 doi "https://doi.org/10.1016/j.bios.2010.09.056" @default.
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