RT journal article T1 Role of miRNA–mRNA Interactome in Pathophysiology of Arrhythmogenic Cardiomyopathy A1 Bonet Martínez, Fernando A1 Campuzano, Oscar A1 Córdoba Caballero, José A1 Alcalde, Mireia A1 Sarquella-Brugada, Georgia A1 Braza-Boïls, Aitana A1 Brugada, Ramón A1 Hernandez-Torres, Francisco A1 Quezada-Feijoó, Maribel A1 Ramos, Mónica A1 Mangas Rojas, Alipio A1 Ranea, Juan A.G. A1 Toro Cebada, Rocío A2 Medicina K1 arrhythmogenic cardiomyopathy K1 sudden cardiac death K1 RNA sequencing K1 microRNA K1 miRNA–mRNA AB Arrhythmogenic cardiomyopathy is an inherited entity characterized by irregular cell–celladhesion, cardiomyocyte death and fibro-fatty replacement of ventricular myocytes, leading to malignantventricular arrythmias, contractile dysfunction and sudden cardiac death. Pathogenic variantsin genes that encode desmosome are the predominant cause of arrhythmogenic cardiomyopathy.Moreover, signalling pathways such as Wnt/ß-catenin and transforming growth factor-β have beeninvolved in the disease progression. However, still little is known about the molecular pathophysiologicalmechanisms that underlie arrhythmogenic cardiomyopathy pathogenesis. We used mRNAand small RNA sequencing to analyse the transcriptome of health and arrhythmogenic cardiomyopathyof autopsied human hearts. Our results showed 697 differentially expressed genes and eightdifferentially expressed miRNAs. Functional enrichment revealed mitochondrial respiratory-relatedpathways, impaired response to oxidative stress, apoptotic signalling pathways and inflammatory response-related and extracellular matrix response pathways. Furthermore, analysis of the miRNA–mRNA interactome identified eleven negatively correlated miRNA-target pairs for arrhythmogeniccardiomyopathy. Our finding revealed novel arrhythmogenic cardiomyopathy-related miRNAs withimportant regulatory function in disease pathogenesis, highlighting their value as potential keytargets for therapeutic approaches. PB MDPI SN 2227-9059 YR 2024 FD 2024-08-09 LK http://hdl.handle.net/10498/36039 UL http://hdl.handle.net/10498/36039 LA eng DS Repositorio Institucional de la Universidad de Cádiz RD 22-sep-2026