• 1. Department of Cardiac Surgery, The First Hospital of China Medical University, Shenyang 110001, P. R. China;
  • 2. Department of Environmental Health, Public Health College of China Medical University, Shenyang 110001, P. R. China;
GUTian-xiang, Email: cmugtx@sina.com
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Objective To investigate effect of heart tissue-derived extracellular matrix(ECM) on the differentiation, proliferation and apoptosis of cardiosphere-derived cells(CDC) in vitro. Methods CDCs were cultured by cardiac explant methods. ECM was prepared by decelluariztion procedure. CDCs were cultured on ECM coated dishes or conventional fibrin (FN) coated dishes. Then we compared the differentiation rate, proliferation, and apoptosis rate of CDC between the two groups in vitro. Results ECM could significantly promote CDC differentiating into vascular endothelial cell, cardiac muscle cell or smooth muscle cell (0.060±0.002 vs. 0.043±0.002, P < 0.001; 0.082±0.003 vs. 0.051±0.002, P < 0.001; 0.055±0.002 vs. 0.034±0.001, P < 0.001). ECM also significantly promoted the proliferation of CDC and reduced the apoptosis and necrosis rate of CDC in vitro (0.052±0.002 vs. 0.025±0.001, P < 0.001). Conclusion We obtained c-kit+ CDCs, effectively remove the cellular components of heart tissue-derived ECM and preserved the composition and structure of ECM. ECM can promote the differentiation of CDC to vascular endothelial cell, cardiac muscle cell or smooth muscle cell, promote the proliferation of CDCs and decrease CDC apoptosis and necrosis rate in vitro.

Citation: JIANGDa-qing, GUTian-xiang, XUZhao-fa, ZHANGGuang-wei, MAONai-hui. Effect of Rat Heart Tissue-derived Extracellular Matrix on Differentiation, Proliferation, and Apoptosis of Cardiosphere-derived Cells in Vitro. Chinese Journal of Clinical Thoracic and Cardiovascular Surgery, 2016, 23(9): 901-906. doi: 10.7507/1007-4848.20160216 Copy

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