New acridone derivatives for the electrochemical DNA-hybridisation labelling.
In the field of DNA sensing, DNA hybridisation detection is generally performed by fluorescence microscopy. However, fluorescence instrumentation is difficult to miniaturise in order to produce fully integrated DNA chips. In this context, electrochemical detection of DNA hybridisation may avoid this limitation. Therefore, the use of DNA intercalators is particularly attractive due to their selectivity toward DNA double strand enabling DNA labelling without target chemical modification and, for most of them, to their electroactivity. We have synthesized a pyridoacridone derivative dedicated to DNA hybridisation electrochemical-sensing which presents good electrochemical reversibility, electroactivity at mild potentials and specificity toward DNA double strand. The electrochemical behaviour of this molecule has been assessed using cyclic voltammetry (CV). DNA/intercalator interactions were studied by differential pulse voltammetry (DPV) before application to hybridisation detection onto DNA sensors based on polypyrrole modified electrodes.
Wang
B
B
CREAB group, Laboratoire des Structures et Propriétés des Architechtures Molécularies UMR 5819 CNRS-CEA Université Joseph Fourier Grenoble 1, DRFMC/S13M/CREAB, CEA 17 avenue des Martyrs 38054Grenoble Cedex 9, France.
Bouffier
L
L
Demeunynck
M
M
Mailley
P
P
Roget
A
A
Livache
T
T
Dumy
P
P
D000166:Acridines / Q000032:analysis* / Q000737:chemistry*; D054831:Acridones; D015374:Biosensing Techniques / Q000295:instrumentation / Q000379:methods*; D004247:DNA / Q000032:analysis* / Q000737:chemistry*; D004563:Electrochemistry / Q000379:methods*; D017404:In Situ Hybridization, Fluorescence / Q000379:methods; D007364:Intercalating Agents / Q000032:analysis / Q000737:chemistry; D009693:Nucleic Acid Hybridization / Q000379:methods*; D010084:Oxidation-Reduction; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D013194:Staining and Labeling / Q000379:methods
D000166:Acridines; D054831:Acridones; D007364:Intercalating Agents; C041300:acridone; D004247:DNA