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- W2030177089 abstract "Background: Induced pluripotent stem cells (iPSCs) hold promise for a new era in treating heart failure. However, the functional microstructure of iPSC-derived cardiomyocytes (iPSC-CMs) and their ability to attach to the extracellular matrix of the recipient myocardium require further elucidation. Thus, we analyzed the functional microstructure and adhesion molecules of iPSC-CM. Methods and Results: Immunostaining analysis showed that iPSC-CMs were similar to neonatal cardiomyocytes (CMs) in expressing the cytoskeletal proteins myosin heavy chain (MHC), myosin light chain (MLC) 2a, MLC2v, and especially β-MHC (a neonatal CM marker), as well as the adhesion molecules N-cadherin, α7-integrin, dystrophin, α-dystroglycan, α-sarcoglycan, and laminin-α2. Electron microscopy showed abundant myofibrillar bundles with transverse Z-bands and a developed mitochondrial structure in both iPSC-CMs and neonatal CMs, although the iPSC-CMs contained fewer mitochondria with lower-density cristae. When transplanted from in vitro conditions to nude rat hearts, iPSC-CMs acquired the ability to express α-MHC, a molecule specific to adult CMs. Mechanical stretch or stimulation by insulin-like growth factor-1 enhanced the α-MHC expression in iPSC-CMs in vitro. Conclusions: Our findings in vitro and in vivo indicate that CMs derived from iPSCs contain cardiac-specific organelles and adhesion systems. These results indicate that iPSC-derived CMs may be useful in new cell therapies for heart failure. (Circ J 2013; 77: 1297–1306)" @default.
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- W2030177089 date "2013-01-01" @default.
- W2030177089 modified "2023-10-14" @default.
- W2030177089 title "In Vivo Differentiation of Induced Pluripotent Stem Cell-Derived Cardiomyocytes" @default.
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- W2030177089 doi "https://doi.org/10.1253/circj.cj-12-0977" @default.
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