Journal
ELECTROANALYSIS
Volume 25, Issue 4, Pages 1005-1009Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/elan.201200397
Keywords
Cell viability; MDA-MB-231 cells; Chronoamperometric detection; Screen-printed electrode; Double-mediator system
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Funding
- National Science Council of Taiwan
- Chung Shan Medical University
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This study investigates suitable electrochemical mediators and optimal mediator concentration for breast cancer cells, MDA-MB-231. The optimized mediators were 1mM ferricyanide and 10 mu M menadione. The specifications for the chronoamperometric detection of ferrocyanide were a linear range of 0.020.36mM. The detection limit was 5.0 mu M and the spiked recovery was 95%99%. The oxidation currents increased linearly with cultured cell density. Cell viabilities determined using electrochemical methods confirmed those determined by MTT assay. The running time can be reduced to less than 30min. The chronoamperometric method can be used as an alternative method for rapidly assessing the viability of breast cancer cells.
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