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Título: | miR-125a, miR-139 and miR-324 contribute to Urocortin protection against myocardial ischemia-reperfusion injury |
Autor: | Díaz Carrasco, Ignacio CSIC; Calderón-Sánchez, Eva CSIC; Toro, Raquel del CSIC ORCID; Ávila-Medina, Javier CSIC ORCID; Sánchez de Rojas de Pedro, Eva CSIC; Domínguez-Rodríguez, Alejandro CSIC; Rosado, Juan A.; Hmadcha, Abdelkrim CSIC ORCID; Ordóñez Fernández, Antonio CSIC ORCID; Smani, Tarik CSIC ORCID | Fecha de publicación: | 21-ago-2017 | Editor: | Springer Nature | Citación: | Scientific Reports 7: 8898 (2017) | Resumen: | Urocortin 1 and 2 (Ucn-1 and Ucn-2) have established protective actions against myocardial ischemia-reperfusion (I/R) injuries. However, little is known about their role in posttranscriptional regulation in the process of cardioprotection. Herein, we investigated whether microRNAs play a role in urocortin-induced cardioprotection. Administration of Ucn-1 and Ucn-2 at the beginning of reperfusion significantly restored cardiac function, as evidenced ex vivo in Langendorff-perfused rat hearts and in vivo in rat subjected to I/R. Experiments using microarray and qRT-PCR determined that the addition of Ucn-1 at reperfusion modulated the expression of several miRNAs with unknown role in cardiac protection. Ucn-1 enhanced the expression of miR-125a-3p, miR-324-3p; meanwhile it decreased miR-139-3p. Similarly, intravenous infusion of Ucn-2 in rat model of I/R mimicked the effect of Ucn-1 on miR-324-3p and miR-139-3p. The effect of Ucn-1 involves the activation of corticotropin-releasing factor receptor-2, Epac2 and ERK1/2. Moreover, the overexpression of miR-125a-3p, miR-324-3p and miR-139-3p promoted dysregulation of genes expression involved in cell death and apoptosis (BRCA1, BIM, STAT2), in cAMP and Ca2+ signaling (PDE4a, CASQ1), in cell stress (NFAT5, XBP1, MAP3K12) and in metabolism (CPT2, FoxO1, MTRF1, TAZ). Altogether, these data unveil a novel role of urocortin in myocardial protection, involving posttranscriptional regulation with miRNAs. | Versión del editor: | https://doi.org/10.1038/s41598-017-09198-x | URI: | http://hdl.handle.net/10261/182070 | DOI: | 10.1038/s41598-017-09198-x | E-ISSN: | 2045-2322 |
Aparece en las colecciones: | (IBIS) Artículos (CABIMER) Artículos |
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