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García-Hidalgo, María C; Benítez, Iván D; Perez-Pons, Manel; Molinero, Marta; Belmonte, Thalía; Rodríguez-Muñoz, Carlos; Aguilà, María; Santisteve, Sally; Torres, Gerard; Moncusí-Moix, Anna; Gort-Paniello, Clara; Peláez, Rafael; Larráyoz, Ignacio M; Caballero, Jesús; Barberà, Carme; Nova-Lamperti, Estefania; Torres, Antoni; González, Jessica; Barbé, Ferran; de Gonzalo-Calvo, David
British journal of pharmacology, 02/2024Journal Article
The post-acute sequelae of SARS-CoV-2 infection pose a significant global challenge, with nearly 50% of critical COVID-19 survivors manifesting persistent lung abnormalities. The lack of understanding about the molecular mechanisms and effective treatments hampers their management. Here, we employed microRNA (miRNA) profiling to decipher the systemic molecular underpinnings of the persistent pulmonary complications. We conducted a longitudinal investigation including 119 critical COVID-19 survivors. A comprehensive pulmonary evaluation was performed in the short-term (median = 94.0 days after hospital discharge) and long-term (median = 358 days after hospital discharge). Plasma miRNAs were quantified at the short-term evaluation using the gold-standard technique, RT-qPCR. The analyses combined machine learning feature selection techniques with bioinformatic investigations. Two additional datasets were incorporated for validation. In the short-term, 84% of the survivors exhibited impaired lung diffusion (D < 80% of predicted). One year post-discharge, 54.4% of this patient subgroup still presented abnormal D . Four feature selection methods identified two specific miRNAs, miR-9-5p and miR-486-5p, linked to persistent lung dysfunction. The downstream experimentally validated targetome included 1473 genes, with heterogeneous enriched pathways associated with inflammation, angiogenesis and cell senescence. Validation studies using RNA-sequencing and proteomic datasets emphasized the pivotal roles of cell migration and tissue repair in persistent lung dysfunction. The repositioning potential of the miRNA targets was limited. Our study reveals early mechanistic pathways contributing to persistent lung dysfunction in critical COVID-19 survivors, offering a promising approach for the development of targeted disease-modifying agents.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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in: SICRIS
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