Redox Capacitive Assaying of C-Reactive Protein at a Peptide Supported Aptamer Interface
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2018-03-06
Autores
Piccoli, Julia [UNESP]
Hein, Robert
El-Sagheer, Afaf H.
Brown, Tom
Cilli, Eduardo M. [UNESP]
Bueno, Paulo R. [UNESP]
Davis, Jason J.
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Electrochemical immunosensors offer much in the potential translation of a lab based sensing capability to a useful real world platform. In previous work we have introduced an impedance-derived electrochemical capacitance spectroscopic analysis as supportive of a reagentless means of reporting on analyte target capture at suitably prepared mixed-component redox-active, antibody-modified interfaces. Herein we directly integrate receptive aptamers into a redox charging peptide support in enabling a label-free low picomolar analytical assay for C-reactive protein with a sensitivity that significantly exceeds that attainable with an analogous antibody interface.
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Analytical Chemistry, v. 90, n. 5, p. 3005-3008, 2018.