ArticleTheranostics2026
Safety and Engraftment of Aligned Cardiac Patches Loaded with hiPSC-CMs in a Large Animal Model of Myocardial Infarction.
Article in Theranostics, 2026. 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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16 authors.
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Abstract
Myocardial infarction (MI) is a leading cause of death in the United States. Human induced pluripotent stem cell-derived cardiomyocytes (hiPSC-CMs) present a promising strategy for regenerating the damaged heart tissue post-MI. However, poor cell engraftment and survival remain significant barriers in their effective use for myocardial repair. In this study, we developed a "cardiac patch" using a bi-layered, aligned coaxial patch for epicardial delivery of hiPSC-CMs in a preclinical porcine MI model. The cardiac patch (40 mm in diameter and 500 µm thick) was fabricated using polycaprolactone (PCL) and gelatin via electrospinning and seeded with twenty-two million hiPSC-CMs. In vitro functional assessment showed synchronized contractility of the hiPSC-CMs along the aligned fibers. The in vivo transplantation of the cardiac patch was performed in a translationally relevant preclinical large animal (porcine) MI model at 1-week after MI induction. Histological assessments showed successful engraftment and survival of the hiPSC-CMs at the infarct, up to 4-weeks after cardiac patch-transplantation. This was accompanied by modest improvements in LVEF (Patch:18.0% vs Control: -1.2%) and a decrease in the enhancement percentage (Patch: 28.8% vs Control: 18.6%) at 4-weeks post-patch transplantation. Additionally, absence of arrhythmias or teratoma formation, affirmed the safety of the cardiac patch. Overall, we have demonstrated the feasibility, safety and engraftment of bi-layered aligned cardiac patches seeded with hiPSC-CMs in preclinical porcine MI model as a promising therapeutic approach for myocardial regeneration post-MI.
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