Establishing a field-effect transistor sensor for the detection of mutations in the tumour protein 53 gene (TP53) : an electrochemical optimisation approach
Crossley, Lisa and Attoye, Bukola and Vezza, Vincent and Blair, Ewen and Corrigan, Damion K. and Hannah, Stuart (2019) Establishing a field-effect transistor sensor for the detection of mutations in the tumour protein 53 gene (TP53) : an electrochemical optimisation approach. Biosensors, 9 (4). 141. ISSN 2079-6374
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Abstract
We present a low-cost, sensitive and specific DNA field-effect transistor sensor for the rapid detection of a common mutation to the tumour protein 53 gene (TP53). The sensor consists of a commercially available, low-cost, field-effect transistor attached in series to a gold electrode sensing pad for DNA hybridisation. The sensor has been predominantly optimised electrochemically, particularly with respect to open circuit potentiometry as a route towards understanding potential (voltage) changes upon DNA hybridisation using a transistor. The developed sensor responds sensitively to TP53 mutant DNA as low as 100 nM concentration. The sensor responds linearly as a function of DNA target concentration and is able to differentiate between complementary and non-complementary DNA target sequences.
Creators(s): |
Crossley, Lisa, Attoye, Bukola, Vezza, Vincent, Blair, Ewen ![]() ![]() ![]() | Item type: | Article |
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ID code: | 70728 |
Keywords: | field-effect transistor, biosensor, TP53, electrochemistry, open-circuit potential, Bioengineering, Chemical Engineering(all), Biophysics, Biomedical Engineering |
Subjects: | Technology > Engineering (General). Civil engineering (General) > Bioengineering |
Department: | Faculty of Engineering > Biomedical Engineering |
Depositing user: | Pure Administrator |
Date deposited: | 06 Dec 2019 14:29 |
Last modified: | 21 Jan 2021 11:27 |
Related URLs: | |
URI: | https://strathprints.strath.ac.uk/id/eprint/70728 |
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