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- Publisher Website: 10.1002/phy2.237
- PMID: 24744906
- WOS: WOS:000214638500025
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Article: Overexpression of myocardin induces partial transdifferentiation of human-induced pluripotent stem cell-derived mesenchymal stem cells into cardiomyocytes
Title | Overexpression of myocardin induces partial transdifferentiation of human-induced pluripotent stem cell-derived mesenchymal stem cells into cardiomyocytes |
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Authors | |
Issue Date | 2014 |
Citation | Physiological Reports, 2014, v. 2 n. 2, article no. e00237 How to Cite? |
Abstract | Mesenchymal stem cells (MSCs) derived from human-induced pluripotent stem cells (iPSCs) show superior proliferative capacity and therapeutic potential than those derived from bone marrow (BM). Ectopic expression of myocardin further improved the therapeutic potential of BM-MSCs in a mouse model of myocardial infarction. The aim was of this study was to assess whether forced myocardin expression in iPSC-MSCs could further enhance their transdifferentiation to cardiomyocytes and improve their electrophysiological properties for cardiac regeneration. Myocardin was overexpressed in iPSC-MSCs using viral vectors (adenovirus or lentivirus). The expression of smooth muscle cell and cardiomyocyte markers, and ion channel genes was examined by reverse transcription-polymerase chain reaction (RT-PCR), immunofluorescence staining and patch clamp. The conduction velocity of the neonatal rat ventricular cardiomyocytes cocultured with iPSC-MSC monolayer was measured by multielectrode arrays recording plate. Myocardin induced the expression of α-MHC, GATA4, α-actinin, cardiac MHC, MYH11, calponin, and SM α-actin, but not cTnT, β-MHC, and MLC2v in iPSC-MSCs. Overexpression of myocardin in iPSC-MSC enhanced the expression of SCN9A and CACNA1C, but reduced that of KCa3.1 and Kir2.2 in iPSC-MSCs. Moreover, BKCa, IKir, ICl, Ito and INa.TTX were detected in iPSC-MSC with myocardin overexpression; while only BKCa, IKir, ICl, IKDR, and IKCa were noted in iPSC-MSC transfected with green florescence protein. Furthermore, the conduction velocity of iPSC-MSC was significantly increased after myocardin overexpression. Overexpression of myocardin in iPSC-MSCs resulted in partial transdifferentiation into cardiomyocytes phenotype and improved the electrical conduction during integration with mature cardiomyocytes |
Persistent Identifier | http://hdl.handle.net/10722/205575 |
PubMed Central ID | |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | ZHANG, J | en_US |
dc.contributor.author | Ho, JCY | en_US |
dc.contributor.author | Chan, YC | en_US |
dc.contributor.author | Lian, Q | en_US |
dc.contributor.author | Siu, DCW | en_US |
dc.contributor.author | Tse, HF | en_US |
dc.date.accessioned | 2014-09-20T04:00:23Z | - |
dc.date.available | 2014-09-20T04:00:23Z | - |
dc.date.issued | 2014 | en_US |
dc.identifier.citation | Physiological Reports, 2014, v. 2 n. 2, article no. e00237 | en_US |
dc.identifier.uri | http://hdl.handle.net/10722/205575 | - |
dc.description.abstract | Mesenchymal stem cells (MSCs) derived from human-induced pluripotent stem cells (iPSCs) show superior proliferative capacity and therapeutic potential than those derived from bone marrow (BM). Ectopic expression of myocardin further improved the therapeutic potential of BM-MSCs in a mouse model of myocardial infarction. The aim was of this study was to assess whether forced myocardin expression in iPSC-MSCs could further enhance their transdifferentiation to cardiomyocytes and improve their electrophysiological properties for cardiac regeneration. Myocardin was overexpressed in iPSC-MSCs using viral vectors (adenovirus or lentivirus). The expression of smooth muscle cell and cardiomyocyte markers, and ion channel genes was examined by reverse transcription-polymerase chain reaction (RT-PCR), immunofluorescence staining and patch clamp. The conduction velocity of the neonatal rat ventricular cardiomyocytes cocultured with iPSC-MSC monolayer was measured by multielectrode arrays recording plate. Myocardin induced the expression of α-MHC, GATA4, α-actinin, cardiac MHC, MYH11, calponin, and SM α-actin, but not cTnT, β-MHC, and MLC2v in iPSC-MSCs. Overexpression of myocardin in iPSC-MSC enhanced the expression of SCN9A and CACNA1C, but reduced that of KCa3.1 and Kir2.2 in iPSC-MSCs. Moreover, BKCa, IKir, ICl, Ito and INa.TTX were detected in iPSC-MSC with myocardin overexpression; while only BKCa, IKir, ICl, IKDR, and IKCa were noted in iPSC-MSC transfected with green florescence protein. Furthermore, the conduction velocity of iPSC-MSC was significantly increased after myocardin overexpression. Overexpression of myocardin in iPSC-MSCs resulted in partial transdifferentiation into cardiomyocytes phenotype and improved the electrical conduction during integration with mature cardiomyocytes | en_US |
dc.language | eng | en_US |
dc.relation.ispartof | Physiological Reports | en_US |
dc.title | Overexpression of myocardin induces partial transdifferentiation of human-induced pluripotent stem cell-derived mesenchymal stem cells into cardiomyocytes | en_US |
dc.type | Article | en_US |
dc.identifier.email | Ho, JCY: jennyho@hku.hk | en_US |
dc.identifier.email | Chan, YC: yauchi@graduate.hku.hk | en_US |
dc.identifier.email | Lian, Q: qzlian@hkucc.hku.hk | en_US |
dc.identifier.email | Siu, DCW: cwdsiu@hkucc.hku.hk | en_US |
dc.identifier.email | Tse, HF: hftse@hkucc.hku.hk | en_US |
dc.identifier.authority | Chan, YC=rp01502 | en_US |
dc.identifier.authority | Lian, Q=rp00267 | en_US |
dc.identifier.authority | Siu, DCW=rp00534 | en_US |
dc.identifier.authority | Tse, HF=rp00428 | en_US |
dc.identifier.doi | 10.1002/phy2.237 | en_US |
dc.identifier.pmid | 24744906 | - |
dc.identifier.pmcid | PMC3966242 | - |
dc.identifier.hkuros | 239241 | en_US |
dc.identifier.volume | 2 | en_US |
dc.identifier.isi | WOS:000214638500025 | - |