RT Journal Article T1 Ccn2 deletion reduces cardiac dysfunction, oxidative markers, and fibrosis induced by doxorubicin administration in mice A1 Tejera-Muñoz, Antonio A1 Cortés, Marcelino A1 Rodriguez-Rodriguez, Alianet A1 Tejedor-Santamaria, Lucia A1 Marchant, Vanessa A1 Rayego-Mateos, Sandra A1 Gimeno Longas, María José A1 Leask, Andrew A1 Nguyen, Tri Q A1 Martín, María A1 Tuñón, José A1 Rodriguez, Isabel A1 Ruiz-Ortega, Marta A1 Rodrigues Díez, Raúl AB Cellular Communication Network Factor 2 (CCN2) is a matricellular protein implicated in cell communication and microenvironmental signaling. Overexpression of CCN2 has been documented in various cardiovascular pathologies, wherein it may exert either deleterious or protective effects depending on the pathological context, thereby suggesting that its role in the cardiovascular system is not yet fully elucidated. In this study, we aimed to investigate the effects of Ccn2 gene deletion on the progression of acute cardiac injury induced by doxorubicin (DOX), a widely utilized chemotherapeutic agent. To this end, we employed conditional knockout (KO) mice for the Ccn2 gene (CCN2-KO), which were administered DOX and compared to DOX-treated wild-type (WT) control mice. Our findings demonstrated that the ablation of CCN2 ameliorated DOX-induced cardiac dysfunction, as evidenced by improvements in ejection fraction (EF) and fractional shortening (FS) of the left ventricle. Furthermore, DOX-treated CCN2-KO mice exhibited a significant reduction in the gene expression and activation of oxidative stress markers (Hmox1 and Nfe2l2/NRF2) relative to DOX-treated WT controls. Additionally, the deletion of Ccn2 markedly attenuated DOX-induced cardiac fibrosis. Collectively, these results suggest that CCN2 plays a pivotal role in the pathogenesis of DOX-mediated cardiotoxicity by modulating oxidative stress and fibrotic pathways. These findings provide a novel avenue for future investigations to explore the therapeutic potential of targeting CCN2 in the prevention of DOX-induced cardiac dysfunction. PB MPDI SN 1422-0067 YR 2024 FD 2024 LK https://hdl.handle.net/20.500.14352/134095 UL https://hdl.handle.net/20.500.14352/134095 LA eng NO Tejera-Muñoz, A., Cortés, M., Rodriguez-Rodriguez, A., Tejedor-Santamaria, L., Marchant, V., Rayego-Mateos, S., Gimeno-Longas, M. J., Leask, A., Nguyen, T. Q., Martín, M., Tuñón, J., Rodríguez, I., Ruiz-Ortega, M., & Rodrigues-Díez, R. R. (2024). Ccn2 Deletion Reduces Cardiac Dysfunction, Oxidative Markers, and Fibrosis Induced by Doxorubicin Administration in Mice. International Journal of Molecular Sciences, 25(17), 9617. https://doi.org/10.3390/ijms25179617 NO Sociedad Española de Cardiología (SEC) grant to MRO NO Sociedad Española de Atherosclerosis (SEA) grant to RRRD NO PI20/00140 and PI23/00394/Instituto de Salud Carlos III (ISCIII) and Fondos FEDER European Union NO RICORS2040; RD21/0005/0002/Instituto de Salud Carlos III (ISCIII) and Fondos FEDER European Union NO INNOREN P2022/BMD-7221/Instituto de Salud Carlos III (ISCIII) and Fondos FEDER European Union DS Docta Complutense RD 8 abr 2026