Development of Carbon-Fiber Electrodes Modified for Electrochemical ATP Detection

Adenosine triphosphate (ATP) is a highly energetic molecule used as a coenzyme in the transfer of chemical energy required for the continuation of cellular metabolism. In addition, extracellular ATP has an important role in cell-to-cell communication in immune, nervous and vascular systems. ATP is detected mainly using commercially available luciferin-luciferase kits and this method does not allow local measurement. In this study, first carbon-fiber microelectrodes capable of local detection were fabricated and then, the surface of these electrodes were modified with enzymes for detection of non-electroactive ATP molecules.