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Pàgina inicial > Articles > Articles publicats > Fast and accurate pneumocystis pneumonia diagnosis in human samples using a label-free plasmonic biosensor |
Data: | 2020 |
Resum: | Pneumocystis jirovecii is a fungus responsible for human Pneumocystis pneumonia, one of the most severe infections encountered in immunodepressed individuals. The diagnosis of Pneumocystis pneumonia continues to be challenging due to the absence of specific symptoms in infected patients. Moreover, the standard diagnostic method employed for its diagnosis involves mainly PCR-based techniques, which besides being highly specific and sensitive, require specialized personnel and equipment and are time-consuming. Our aim is to demonstrate an optical biosensor methodology based on surface plasmon resonance to perform such diagnostics in an efficient and decentralized scheme. The biosensor methodology employs poly-purine reverse-Hoogsteen hairpin probes for the detection of the mitochondrial large subunit ribosomal RNA (mtLSU rRNA) gene, related to P. jirovecii detection. The biosensor device performs a real-time and label-free identification of the mtLSU rRNA gene with excellent selectivity and reproducibility, achieving limits of detection of around 2. 11 nM. A preliminary evaluation of clinical samples showed rapid, label-free and specific identification of P. jirovecii in human lung fluids such as bronchoalveolar lavages or nasopharyngeal aspirates. These results offer a door for the future deployment of a sensitive diagnostic tool for fast, direct and selective detection of Pneumocystis pneumonia disease. |
Ajuts: | Ministerio de Ciencia e Innovación CTQ2017-84415-R Ministerio de Ciencia e Innovación FICTS-1420-27 Ministerio de Economía y Competitividad SEV-2017-0706 Ministerio de Economía y Competitividad BES-2017-080527 Ministerio de Economía y Competitividad TEC 2016-78515-R |
Drets: | Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original. |
Llengua: | Anglès |
Document: | Article ; recerca ; Versió publicada |
Matèria: | DNA capture ; Pneumocystis jirovecii ; Surface Plasmon Resonance ; Clinical diagnosis ; Optical biosensor ; Triplex |
Publicat a: | Nanomaterials, Vol. 10, issue 6 (June 2020) , art. 1246, ISSN 2079-4991 |
18 p, 3.3 MB |