DNA electrochemical biosensor for metallic drugs at physiological conditions.

DNA electrochemical biosensor for metallic drugs at physiological conditions.
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DOI:
10.1016/j.jelechem.2014.07.022
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发表时间:
2014-10-01
期刊:
Journal of electroanalytical chemistry (Lausanne, Switzerland)
影响因子:
--
通讯作者:
Meléndez E
Meléndez E
中科院分区:
其他
文献类型:
--
作者:
Santiago-Lopez AJ;Vera JL;Meléndez E

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Entrapment of dsSS-DNA into the polypyrrole-polyvinyl sulphonate (dsSS-DNA-PPy-PVS) film over indium-tin-oxide (ITO) coated glass has been designed to detect titanium and platinum drugs, titanocene dichloride and cisplatin. The disposable dsSS-DNA-PPy-PVS/ITO biosensor was characterized by cyclic voltammetry, attenuated total reflectance Infrared spectroscopy and atomic force microscopy. Amperometric studies by cyclic voltammetry using, dsSS-DNA-PPy PVS/ITO biosensor, demonstrated the ability of this biosensor to detect these metallic drugs in millimolar concentration by monitoring the decrease of the guanine oxidation signal as a result of the DNA damage. The concentration range detected for titanocene dichloride is 0.25 to 1.5 mM and for cisplatin is 0.06 to 1.0 mM.
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