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Disposable graphene-oxide screen-printed electrode integrated with portable device for detection of SARS-CoV-2 in clinical samples.
- Source :
-
Bioelectrochemistry (Amsterdam, Netherlands) [Bioelectrochemistry] 2024 Aug; Vol. 158, pp. 108722. Date of Electronic Publication: 2024 Apr 27. - Publication Year :
- 2024
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Abstract
- Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) diagnosis is the need of the hour, as cases are persistently increasing, and new variants are constantly emerging. The ever-changing nature of the virus leading to multiple variants, has brought an imminent need for early, accurate and rapid detection methods. Herein, we have reported the design and fabrication of Screen-Printed Electrodes (SPEs) with graphene oxide (GO) as working electrode and modified with specific antibodies for SARS-CoV-2 Receptor Binding Domain (RBD). Flexibility of design, and portable nature has made SPEs the superior choice for electrochemical analysis. The developed immunosensor can detect RBD as low as 0.83 fM with long-term storage capacity. The fabricated SPEs immunosensor was tested using a miniaturized portable device and potentiostat on 100 patient nasopharyngeal samples and corroborated with RT-PCR data, displayed 94 % sensitivity. Additionally, the in-house developed polyclonal antibodies detected RBD antigen of the mutated Omicron variant of SARS-CoV-2 successfully. We have not observed any cross-reactivity/binding of the fabricated immunosensor with MERS (cross-reactive antigen) and Influenza A H1N1 (antigen sharing common symptoms). Hence, the developed SPEs sensor may be applied for bedside point-of-care diagnosis of SARS-CoV-2 using miniaturized portable device, in clinical samples.<br />Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.<br /> (Copyright © 2024 Elsevier B.V. All rights reserved.)
- Subjects :
- Humans
Immunoassay methods
Immunoassay instrumentation
Electrochemical Techniques methods
Electrochemical Techniques instrumentation
Spike Glycoprotein, Coronavirus immunology
Spike Glycoprotein, Coronavirus analysis
Limit of Detection
Graphite chemistry
SARS-CoV-2 immunology
SARS-CoV-2 isolation & purification
SARS-CoV-2 genetics
COVID-19 diagnosis
COVID-19 virology
Electrodes
Biosensing Techniques instrumentation
Biosensing Techniques methods
Subjects
Details
- Language :
- English
- ISSN :
- 1878-562X
- Volume :
- 158
- Database :
- MEDLINE
- Journal :
- Bioelectrochemistry (Amsterdam, Netherlands)
- Publication Type :
- Academic Journal
- Accession number :
- 38697015
- Full Text :
- https://doi.org/10.1016/j.bioelechem.2024.108722