Generation of functional murine cardiac myocytes from induced pluripotent stem cells
2008 | journal article; research paper. A publication with affiliation to the University of Göttingen.
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Generation of functional murine cardiac myocytes from induced pluripotent stem cells
Mauritz, C.; Schwanke, K.; Reppel, M.; Neef, S.; Katsirntaki, K.; Maier, L. S. & Nguemo, F. et al. (2008)
Circulation, 118(5) pp. 507-517. DOI: https://doi.org/10.1161/CIRCULATIONAHA.108.778795
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Details
- Authors
- Mauritz, Christina; Schwanke, Kristin; Reppel, Michael; Neef, Stefan; Katsirntaki, Katherina; Maier, Lars S. ; Nguemo, Filomain; Menke, Sandra; Haustein, Moritz; Hescheler, Juergen; Hasenfuß, Gerd ; Martin, Ulrich
- Abstract
- Background - The recent breakthrough in the generation of induced pluripotent stem ( iPS) cells, which are almost indistinguishable from embryonic stem ( ES) cells, facilitates the generation of murine disease - and human patient specific stem cell lines. The aim of this study was to characterize the cardiac differentiation potential of a murine iPS cell clone in comparison to a well- established murine ES cell line. Methods and Results - With the use of a standard embryoid body - based differentiation protocol for ES cells, iPS cells as well as ES cells were differentiated for 24 days. Although the analyzed iPS cell clone showed a delayed and less efficient formation of beating embryoid bodies compared with the ES cell line, the differentiation resulted in an average of 55% of spontaneously contracting iPS cell embryoid bodies. Analyses on molecular, structural, and functional levels demonstrated that iPS cell - derived cardiomyocytes show typical features of ES cell - derived cardiomyocytes. Reverse transcription polymerase chain reaction analyses demonstrated expression of marker genes typical for mesoderm, cardiac mesoderm, and cardiomyocytes including Brachyury, mesoderm posterior factor 1 ( Mesp1), friend of GATA2 ( FOG- 2), GATA-binding protein 4 ( GATA4), NK2 transcription factor related, locus 5 ( Nkx2.5), T-box 5 (Tbx5), T- box 20 ( Tbx20), atrial natriuretic factor ( ANF), myosin light chain 2 atrial transcripts ( MLC2a), myosin light chain 2 ventricular transcripts (MLC2v), alpha-myosin heavy chain (alpha-MHC), and cardiac troponin T in differentiation cultures of iPS cells. Immunocytology confirmed expression of cardiomyocyte-typical proteins including sarcomeric alpha-actinin, titin, cardiac troponin T, MLC2v, and connexin 43. iPS cell cardiomyocytes displayed spontaneous rhythmic intracellular Ca2+ fluctuations with amplitudes of Ca2+ transients comparable to ES cell cardiomyocytes. Simultaneous Ca2+ release within clusters of iPS cell - derived cardiomyocytes indicated functional coupling of the cells. Electrophysiological studies with multielectrode arrays demonstrated functionality and presence of the beta- adrenergic and muscarinic signaling cascade in these cells. Conclusions - iPS cells differentiate into functional cardiomyocytes. In contrast to ES cells, iPS cells allow derivation of autologous functional cardiomyocytes for cellular cardiomyoplasty and myocardial tissue engineering.
- Issue Date
- 2008
- Publisher
- Lippincott Williams & Wilkins
- Journal
- Circulation
- ISSN
- 0009-7322