Abstract
The therapeutic potential of bone marrow mesenchymal stromal cells (bmMSCs) to address heart failure needs improvement for better engraftment and survival. This study explores the role of metabolic sorting for human bmMSCs in coculture in vitro and on doxorubicin-induced heart failure mice models. Using functional, epigenetic, and gene expression approaches on cells sorted for mitochondrial membrane potential in terms of their metabolic status, we demonstrated that bmMSCs selected for their glycolytic metabolism presented proliferative advantage and resistance to oxidative stress thereby favoring cell engraftment. Therapeutic use of glycolytic bmMSCs rescued left ventricular ejection fraction and decreased fibrosis in mice models of acute heart failure. Metabolic changes were also related to epigenetic histone modifications such as lysine methylation. By targeting LSD1 (lysine-specific demethylase 1) as a conditioning agent to enhance the metabolic profile of bmMSCs, we deciphered the interplay between glycolysis and bmMSC functionality. Our study elucidates novel strategies for optimizing bmMSC-based treatments for heart failure, highlighting the metabolic properties of bmMSCs as a promising target for more effective cardiovascular regenerative therapies.
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