Author, as appears in the article.: Rajeev G; Melville E; Cowin AJ; Prieto-Simon B; Voelcker NH
Department: Enginyeria Electrònica, Elèctrica i Automàtica
URV's Author/s: Prieto Simón, Beatriz
Keywords: Repair Porous alumina Nanohole arrays Immunosensing Flii Flightless-i Flightless detection Electrochemical biosensor Chronic wound Attenuation Actin-remodeling protein
Abstract: © Copyright © 2020 Rajeev, Melville, Cowin, Prieto-Simon and Voelcker. A label-free electrochemical detection platform for the sensitive and rapid detection of Flightless I (Flii) protein, a biomarker of wound chronicity, has been developed using nanoporous anodic alumina (NAA) membranes modified with Flii antibody recognition sites. The electrochemical detection is based on the nanochannel blockage experienced upon Flii capture by immobilized antibodies within the nanochannels. This capture impedes the diffusion of redox species [[Fe(CN)6]4−/3−] toward a gold electrode attached at the backside of the modified NAA membrane. Partial blockage causes a decrease in the oxidation current of the redox species at the electrode surface which is used as an analytical signal by the reported biosensor. The resulting biosensing system allows detection of Flii at the levels found in wounds. Two types of assays were tested, sandwich and direct, showing <3 and 2 h analysis time, respectively, a significant reduction in time from the nearly 48 h required for the conventional Western blot assay. Slightly higher sensitivity values were observed for the sandwich-based strategy. With faster analysis, lack of matrix effects, robustness, ease of use and cost-effectiveness, the developed sensing platform has the potential to be translated into a point-of-care (POC) device for chronic wound management and as a simple alternative characterization tool in Flii research.
Thematic Areas: Química Medicina ii Medicina i Materiais Interdisciplinar General chemistry Farmacia Ciências biológicas iii Ciências biológicas ii Ciências biológicas i Ciências ambientais Chemistry, multidisciplinary Chemistry (miscellaneous) Chemistry (all) Biotecnología Biodiversidade
licence for use: https://creativecommons.org/licenses/by/3.0/es/
Author's mail: beatriz.prieto-simon@urv.cat
Author identifier: 0000-0001-8016-1565
Record's date: 2023-02-19
Papper version: info:eu-repo/semantics/publishedVersion
Link to the original source: https://www.frontiersin.org/articles/10.3389/fchem.2020.00155/full
Papper original source: Frontiers In Chemistry. 8 (155):
APA: Rajeev G; Melville E; Cowin AJ; Prieto-Simon B; Voelcker NH (2020). Porous Alumina Membrane-Based Electrochemical Biosensor for Protein Biomarker Detection in Chronic Wounds. Frontiers In Chemistry, 8(155), -. DOI: 10.3389/fchem.2020.00155
Licence document URL: https://repositori.urv.cat/ca/proteccio-de-dades/
Article's DOI: 10.3389/fchem.2020.00155
Entity: Universitat Rovira i Virgili
Journal publication year: 2020
Publication Type: Journal Publications