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| Pàgina inicial > Articles > Articles publicats > Rapid diagnostic test for assessment of cellular immune response in a viral infection as a model |
| Data: | 2024 |
| Resum: | The global SARS-CoV-2 pandemic has highlighted the critical importance of evaluating adaptive immunological status in both infected individuals and those who have been vaccinated. While the humoral immune response has been extensively studied, the cellular immune component has not progressed as rapidly due to challenges in developing rapid diagnostic tests for activated T cells. This study introduces a rapid, user-friendly assay aimed at addressing this need by using the early expression of interferon-gamma (IFN-γ) transcripts for rapid and direct evaluation. Using a novel design, this assay measures IFN-γ mRNA rather than its protein levels, thereby significantly shortening the time to result compared to traditional methods. The process involves incubating whole blood with a mixture of Spike and Nucleocapsid peptides, followed by immunomagnetic separation of CD3+ T cells and subsequent double-tagging RT-PCR. A lateral flow assay (LFA) is then used for detection, allowing IFN-γ mRNA levels to be assessed rapidly. Non-stimulated samples are used as controls to establish baseline IFN-γ expression. The intensity of the LFA signals from the stimulated samples is then compared to these baseline values using a smartphone interface. Furthermore, the study includes a time course analysis to monitor the T cell response dynamics over time in infected individuals. This LFA-IFN-γ represents a significant progress in the field of rapid diagnostics, offering a one-day protocol that simplifies testing procedures and is especially suitable for low-resource settings. |
| Ajuts: | Agencia Estatal de Investigación PID2019-106625RB-I00 Agencia Estatal de Investigación PID2022-136453OB-I00 Agencia Estatal de Investigación PDC2022-133363 Agència de Gestió d'Ajuts Universitaris i de Recerca 2021/SGR-00124 Agència de Gestió d'Ajuts Universitaris i de Recerca 2021/SGR-00740 Agència de Gestió d'Ajuts Universitaris i de Recerca 2020/SGR-00079 |
| Nota: | Altres ajuts: acords transformatius de la UAB |
| 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: | Cellular immune response ; In vitro diagnostic test ; Lateral flow assay ; IGRA ; Interferon gamma |
| Publicat a: | Sensors and actuators. B, Chemical, Vol. 417 (October 2024) , ISSN 1873-3077 |
8 p, 3.6 MB |