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- W3208637160 abstract "• This work introduces a new method based on a combination of aptasensing and molecular imprinting for detection of Trypsin . • This work is the first report based on a GCE/NiONP/Aptamer-MIP for ultrasensitive detection of Trypsin. • The linear dynamic concentration range and LOD of the sensor were 1 × 10–6 to 350 nM and 957 aM. • The application of the sensor in blood serum samples was evaluated. In this study, the attempt has been made in the direction to design a new artificial receptor biosensor by use of a hybrid method of molecularly imprinted polymer (MIP) and aptamers (Apt) to ultra-trace Trypsin (Trp) enzyme recognition. Firstly, the effective surface of the electrode was increased by NiO nanoparticles electrochemical deposition. Then a prepared complex containing Apt-Trp was incubated on the NiO surface. A specific surface of Trp bind to one aptamer tail-end. The other tail of the aptamer was attached to NiONP from the NH 2 side and in this treatment, the protein target was immobilized as the template. The electropolymerization process was performed using dopamine to completely form a polymeric matrix around the target protein. Finally, the Trp molecule was eliminated with suitable eluent, and the prepared Apt-2DMIP biosensor was used for analytical experiments. This real-time detective sensor had unparalleled selectivity and sensitivity in the presence of off-target species to the Trp. A good diagnostic linear range from 1to 90 pg.mL −1 was obtained with a detection limit of 0.75 pg.mL −1 . The imprinting factor was calculated without and in the presence of aptamer, and the results showed that aptamer significantly increased the throughput of the biosensor. Finally, in real samples including blood human serum and urine samples, the efficiency of the biosensor was evaluated, and satisfactory results were obtained." @default.
- W3208637160 created "2021-11-08" @default.
- W3208637160 creator A5031999726 @default.
- W3208637160 creator A5058887295 @default.
- W3208637160 date "2022-01-01" @default.
- W3208637160 modified "2023-10-17" @default.
- W3208637160 title "Impedimetric ultrasensitive detection of trypsin based on hybrid aptamer-2DMIP using a glassy carbon electrode modified by nickel oxide nanoparticle" @default.
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- W3208637160 doi "https://doi.org/10.1016/j.microc.2021.106955" @default.
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