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A fibrin-supported myocardial organ culture for isolation of cardiac stem cells via the recapitulation of cardiac homeostasis
- A fibrin-supported myocardial organ culture for isolation of cardiac stem cells via the recapitulation of cardiac homeostasis
- Kim, Jong-Tae; Chung, Hye Jin; Seo, Ji-Yeon; Yang, Young-Ii; Choi, Min-Young; Kim, Hyeong-In; Yang, Tae-Hyun; Lee, Won-Jin; Youn, Young Chul; Kim, Hye Jung; Kim, Yeon Mee; Lee, Hyukjin; Jang, Yang-Soo; Lee, Seung-Jin
- Ewha Authors
- 이승진; 이혁진; 정혜진
- SCOPUS Author ID
- 이승진; 이혁진; 정혜진
- Issue Date
- Journal Title
- BIOMATERIALS vol. 48, pp. 66 - 83
- Organ culture; Cardiac homeostasis; Cardiac stem cells; Fibrin; Myocardial infarction; Stem cell niche
- ELSEVIER SCI LTD
- SCI; SCIE; SCOPUS
- Document Type
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- There is great interest in the development of cardiac stem cells (CSCs) cell-based therapeutics; thus, clinical translation requires an efficient method for attaining therapeutic quantities of these cells. Furthermore, an in vitro model to investigate the mechanisms regulating the cardiac homeostasis is crucial. We sought to develop a simple myocardial culture method for enabling both the recapitulation of myocardial homeostasis and the simultaneous isolation of CSCs. The intact myocardial fragments were encapsulated 3-dimensionally into the fibrin and cultured under dynamic conditions. The fibrin provided secure physical support and substratum to the myocardium, which mediated integrin-mediated cell signaling that allowed in situ renewal, outgrowth and cardiomyogenic differentiation of CSCs, mimicking myocardial homeostasis. Since our culture maintained the myocardial CSCs niches, it was possible to define the identity of in vitro renewed CSCs that situated in the interstitium between cardiomyocytes and microvessels. Lastly, the use of matrix-restricted fibrinolysis enabled the selective isolation of outgrown CSCs that retained the clonogenicity, long-term growth competency and cardiovascular commitment potential. Collectively, this myocardial culture might be used as an alternative tool for studying cardiac biology and developing cell-based therapeutics. (C) 2015 Elsevier Ltd. All rights reserved.
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