Validation of a plasmonic-based serology biosensor for veterinary diagnosis of COVID-19 in domestic animals
Giarola, Juliana Fatima (Institut Català de Nanociència i Nanotecnologia)
Soler Aznar, Maria (Institut Català de Nanociència i Nanotecnologia)
Estévez, M. Carmen (Institut Català de Nanociència i Nanotecnologia)
Tarasova, Anna (Institut Català de Nanociència i Nanotecnologia)
Le Poder, Sophie (École Nationale Vétérinaire d'Alfort)
Wasniewski, Marine (Interfas Unit. Nancy Laboratory for Rabies and Wildlife)
Decaro, Nicola (Università degli Studi di Bari Aldo Moro. Department of Veterinary Medicine)
Lechuga, Laura M. (Institut Català de Nanociència i Nanotecnologia)

Data:	2024
Resum:	The coronavirus disease 2019 (COVID-19) pandemic recently demonstrated the devastating impact on public health, economy, and social development of zoonotic infectious diseases, whereby viruses jump from animals to infect humans. Due to this potential of viruses to cross the species barrier, the surveillance of infectious pathogens circulation in domestic and close-to-human animals is indispensable, as they could be potential reservoirs. Optical biosensors, mainly those based on Surface Plasmon Resonance (SPR), have widely demonstrated its ability for providing direct, label-free, and quantitative bioanalysis with excellent sensitivity and reliability. This biosensor technology can provide a powerful tool to the veterinary field, potentially being helpful for the monitoring of the infection spread. We have implemented a multi-target COVID-19 serology plasmonic biosensor for the rapid testing and screening of common European domestic animals. The multi-target serological biosensor assay enables the detection of total SARS-CoV-2 antibodies (IgG + IgM) generated towards both S and N viral antigens. The analysis is performed in less than 15 min with a low-volume serum sample (<20 μL, 1:10 dilution), reaching a limit of detection of 49. 6 ng mL. A complete validation has been carried out with hamster, dog, and cat sera samples (N = 75, including 37 COVID-19-positive and 38 negative samples). The biosensor exhibits an excellent diagnostic sensitivity (100 %) and good specificity (71. 4 %) for future application in veterinary settings. Furthermore, the biosensor technology is integrated into a compact, portable, and user-friendly device, well-suited for point-of-care testing. This study positions our plasmonic biosensor as an alternative and reliable diagnostic tool for COVID-19 serology in animal samples, expanding the applicability of plasmonic technologies for decentralized analysis in veterinary healthcare and animal research.
Drets:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, i la comunicació pública de l'obra, sempre que no sigui amb finalitats comercials, i sempre que es reconegui l'autoria de l'obra original. No es permet la creació d'obres derivades.
Llengua:	Anglès
Document:	Article ; recerca ; Versió publicada
Matèria:	Plasmonic biosensor ; COVID-19 serology ; Label-free analysis ; Clinical validation ; Domestic animals ; Veterinary healthcare
Publicat a:	Talanta, Vol. 271 (May 2024) , art. 125685, ISSN 1873-3573

DOI: 10.1016/j.talanta.2024.125685

9 p, 4.3 MB

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