ArticleStem cells international2025
KLF5 Regulation of Exosome-Derived miR-152-3p From Bone Marrow Stem Cells Improves Ventricular Arrhythmia After Myocardial Infarction.
Article in Stem cells international, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Cardiac fibroblasts (CFs) are activated into cardiac myofibroblasts (CMFs) in myocardial infarction (MI) and promote fibrosis, playing a crucial role in deteriorating cardiac function and inducing fatal arrhythmias. Transplantation of bone marrow mesenchymal stem cells (BMSCs) has emerged as a promising therapeutic approach for ischemic heart diseases, including MI. Recent studies have indicated that BMSCs can modulate the survival, differentiation, and antifibrotic activity of CFs. Kruppel-like factor 5 (KLF5) is a significant transcription factor involved in maintaining stem cell properties. In this study, we aimed to investigate whether overexpression of KLF5 could enhance the cardioprotective characteristics of BMSCs, particularly in terms of mitigating structural and electrical remodeling. Our in vivo experiments revealed that transplantation of KLF5-overexpressing BMSCs in mice with MI led to a substantial reduction in ventricular fibrosis and the occurrence of ventricular arrhythmias (VAs). In vitro coculture experiments demonstrated that BMSCs could inhibit CFs activation and cytoskeleton protein bundling induced by hypoxia through paracrine effects, resulting in reduced expression of α-SMA and Collagen I. Furthermore, coculturing BMSCs significantly reduced the expression of connexin 43, alleviated hypoxia, increased the expression of inward-rectifier K
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