Journal
MICROCHIMICA ACTA
Volume 181, Issue 1-2, Pages 205-212Publisher
SPRINGER WIEN
DOI: 10.1007/s00604-013-1100-x
Keywords
Electrochemical sensor; Aptamer; Lipid bilayer membrane; Adenosine triphosphate
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Funding
- National Science Foundation of People's Republic of China [21275100]
- Shanghai Leading Academic Discipline Project [S30406]
- Key Laboratory of Resource Chemistry of Ministry of Education
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We have developed an aptasensor for adenosine triphosphate (ATP) based on an electrode-supported lipid bilayer membrane. The assay is based on a conformational change that is induced after binding the target which modulates the electron transfer rate in the conductive path. The method is highly sensitive, stable, and repeatable. The detection limit for ATP is 50 nM, and the dynamic range extends to 3.2 mu M, which covers the concentration range of ATP in cell lysates (from 0.1 to 1 mu M). The method also holds promise in that it may be transferred to submicro- or nano-scale electrodes so to enable intracellular monitoring of ATP.
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