A fibrin-supported myocardial organ culture for isolation of cardiac stem cells via the recapitulation of cardiac homeostasis

Jong Tae Kim, Hye Jin Chung, Ji Yeon Seo, Young Il Yang, Min Young Choi, Hyeong In Kim, Tae Hyun Yang, Won Jin Lee, Young Chul Youn, Hye Jung Kim, Yeon Mee Kim, Hyukjin Lee, Yang Soo Jang, Seung Jin Lee

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9 Citations (Scopus)

Abstract

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 invitro 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 invitro 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.

Original languageEnglish
Pages (from-to)66-83
Number of pages18
JournalBiomaterials
Volume48
DOIs
Publication statusPublished - 2015 Apr 1

All Science Journal Classification (ASJC) codes

  • Bioengineering
  • Ceramics and Composites
  • Biophysics
  • Biomaterials
  • Mechanics of Materials

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    Kim, J. T., Chung, H. J., Seo, J. Y., Yang, Y. I., Choi, M. Y., Kim, H. I., Yang, T. H., Lee, W. J., Youn, Y. C., Kim, H. J., Kim, Y. M., Lee, H., Jang, Y. S., & Lee, S. J. (2015). A fibrin-supported myocardial organ culture for isolation of cardiac stem cells via the recapitulation of cardiac homeostasis. Biomaterials, 48, 66-83. https://doi.org/10.1016/j.biomaterials.2015.01.041