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Reference type: Journal
Authors: Bartold K, Pietrzyk-Le A, Golebiewska K, Lisowski W, Cauteruccio S, Licandro E, D'Souza F, Kutner W
Article Title: Oligonucleotide Determination via Peptide Nucleic Acid Macromolecular Imprinting in an Electropolymerized CG-Rich Artificial Oligomer Analogue.
Publication date: 2018
Journal: ACS Applied Materials & Interfaces
Volume: 10
Issue: (33)
Page numbers: 27562-27569.
DOI: 10.1021/acsami.8b09296

Abstract: We devised and fabricated a chemosensor for determination of the genetically relevant 5'-GCGGCGGC-3' (G = guanine; C = cytosine) oligonucleotide. For that, we simultaneously electrosynthesized and electrode-immobilized a sequence-defined octakis(2,2'-bithien-5-yl) DNA hybridizing probe using both a "macromolecular imprinting in polymer strategy" and a sequence-programmable peptide nucleic acid (PNA) template. With electrochemical impedance spectroscopy (EIS) and surface plasmon resonance (SPR) transductions under stagnant-solution and flow injection analysis (FIA) conditions, respectively, we determined the above oligonucleotide with 200-pM EIS limit of detection. With its EIS-determined apparent imprinting factor of ~4.0, the chemosensor was discriminative to both mismatched oligonucleotides and Dulbecco's modified Eagle's medium sample interferences
Template and target information: peptide nucleic acid, PNA, DNA, 5'-GCGGCGGC-3', oligonucleotide
Author keywords: CG-rich DNA analogue, DNA sensor, electrochemical impedance spectroscopy, hybridization, isothermal titration calorimetry, macromolecularly imprinted polymer, peptide nucleic acid

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