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Embryonic stem cell-based cardiopatches improve cardiac function in infarcted rats

Bei, Wang
Zammaretti, Prisca
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Published in Stem cells translational medicine. 2012, vol. 1, no. 3, p. 248-260
Abstract Pluripotent stem cell-seeded cardiopatches hold promise for in situ regeneration of infarcted hearts. Here, we describe a novel cardiopatch based on bone morphogenetic protein 2-primed cardiac-committed mouse embryonic stem cells, embedded into biodegradable fibrin matrices and engrafted onto infarcted rat hearts. For in vivo tracking of the engrafted cardiac-committed cells, superparamagnetic iron oxide nanoparticles were magnetofected into the cells, thus enabling detection and functional evaluation by high-resolution magnetic resonance imaging. Six weeks after transplantation into infarcted rat hearts, both local (p < .04) and global (p < .015) heart function, as well as the left ventricular dilation (p < .0011), were significantly improved (p < .001) as compared with hearts receiving cardiopatches loaded with iron nanoparticles alone. Histological analysis revealed that the fibrin scaffolds had degraded over time and clusters of myocyte enhancer factor 2-positive cardiac-committed cells had colonized most of the infarcted myocardium, including the fibrotic area. De novo CD31-positive blood vessels were formed in the vicinity of the transplanted cardiopatch. Altogether, our data provide evidence that stem cell-based cardiopatches represent a promising therapeutic strategy to achieve efficient cell implantation and improved global and regional cardiac function after myocardial infarction.
PMID: 23197784
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Research group Imagerie cardiaque fonctionnelle (541)
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VALLÉE, Jean-Paul et al. Embryonic stem cell-based cardiopatches improve cardiac function in infarcted rats. In: Stem cells translational medicine, 2012, vol. 1, n° 3, p. 248-260. doi: 10.5966/sctm.2011-0028 https://archive-ouverte.unige.ch/unige:28213

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Deposited on : 2013-05-28

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