Journal
TRANSPLANTATION
Volume 103, Issue 2, Pages 291-298Publisher
LIPPINCOTT WILLIAMS & WILKINS
DOI: 10.1097/TP.0000000000002384
Keywords
-
Categories
Funding
- Research Center Network for Regenerative Medicine from the Japan Agency for Medical Research and Development (AMED)
Ask authors/readers for more resources
Background. Somatic stem cell (SC) therapy can improve cardiac performance following ischemic injury. In this study, we investigated whether induced pluripotent SC-derived cardiomyocytes (iPS-CMs) are more effective than somatic SCs, such as skeletal myoblasts (SM) and mesenchymal (M)SCs, in promoting functional recovery upon transplantation in a porcine model of myocardial infarction. Methods. Myocardial injury was induced by ameroid ring placement in immunosuppressed female mini pigs; after 1 month, epicardial cell transplantation was performed with iPS-CMs (n = 7), SMs (n = 7), and MSCs (n = 7). Control pigs underwent sham operation (n = 8). Results. Cell therapy improved functional recovery 2 months after myocardial infarction, as evidenced by increased ejection fraction (iPS-CM, +7.3%+/- 2.2% and SM, +5.8%+/- 5.4% vs control, -4.4%+/- 3.8%; P < 0.05). The analysis of regional contractile function in the infarcted zone revealed an increase in transverse peak strain (iPS-CM, +4.6% +/- 2.2% vs control, -3.8% +/- 4.7%; P < 0.05). The C-11 acetate kinetic analysis by positron emission tomography showed that the work-metabolic cardiac energy efficacy increased by the transplantation of iPS-CMs, but was reduced by the other cell types. This was accompanied by decreased myocardial wall stress in the infarcted zone (iPS-CM, -27.6 +/- 32.3 Pa and SM, -12.8 +/- 27 Pa vs control, +40.5 +/- 33.9 Pa; P < 0.05). Conclusions. The iPS-CM is superior to other somatic cell sources in terms of improving regional contractile function and cardiac bioenergetic efficiency, suggesting greater clinical benefits in severely damaged myocardium.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available