Repository of Research and Investigative Information

Repository of Research and Investigative Information

Ilam University of Medical Sciences

Fabrication of a novel impedimetric biosensor for label free detection of DNA damage induced by doxorubicin

Sun Apr 14 11:37:47 2024

(2019) Fabrication of a novel impedimetric biosensor for label free detection of DNA damage induced by doxorubicin. International Journal of Biological Macromolecules. pp. 963-971. ISSN 0141-8130

Full text not available from this repository.

Official URL:


In this work, a novel impedimetric biosensor has been fabricated for detection of DNA damage induced by doxorubicin (DX). Cytochrome P450 reductase (CPR) is required for electron transfer from nicotinamide adenine dinucleotide phosphate (NADPH) to cytochrome P450 (CP450) which causes DX to undergo a one-electron reduction of the p-quinone residue to form the semiquinone radical resulting in the generation of free hydroxyl radical which causes DNA damage. After modification of bare glassy carbon electrode (GCE) with multiwalled carbon nanotubes (MWCNTs) and chitosan (Ch), CPR and CP450 were co-immobilized onto the surface of Ch/MWCNTs/GCE by cross-linking CPR, CP450 and Ch through addition of glutaraldehyde. Then, the DNA was assembled onto the surface of CPRCP450/Ch/MWCNTs/GCE to fabricate the biosensor (DNA/CPRCP450/Ch/MWCNTs/GCE). Modifications applied to the bare GCE to fabricate the biosensor were characterized by CV, EIS and SEM. The DNA/CPRCP450/Ch/MWCNTs/GCE was treated in the damaging solution (DX + NADPH) which caused a significant DNA damage and the exposed DNA bases reduced the electrostatic repulsion of the negatively charged redox probe leading to Faradaic impedance changes. Performance of the biosensor for detection of DNA damage in the presence of Spinach extract was also examined and finally, an indirect impedimetric method was developed for determination of DX. (C) 2018 Elsevier B.V. All rights reserved.

Item Type: Article
Goicoechea, H. C.UNSPECIFIED
Keywords: Impedimetric biosensor Doxorubicin DNA damage glassy-carbon electrode modeled voltammetric data human serum-albumin electrochemical biosensor antioxidant activity 2nd-order advantage system buprenorphine chemometrics challenges Biochemistry & Molecular Biology Chemistry Polymer Science
Page Range: pp. 963-971
Journal or Publication Title: International Journal of Biological Macromolecules
Journal Index: ISI
Volume: 124
Identification Number:
ISSN: 0141-8130
Depositing User: مهندس مهدی شریفی

Actions (login required)

View Item View Item