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Evaluation of Mechanical Properties of Human Mesenchymal Stem Cells During Differentiation to Smooth Muscle Cells

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Abstract

Human mesenchymal stem cells (hMSCs) are multipotent cells appropriate for a variety of tissue engineering and cell therapy applications. Mechanical properties of hMSCs during differentiation are associated with their particular metabolic activity and regulate cell function due to alternations in cytoskeleton and structural elements. The objective of this study is to evaluate elastic and viscoelastic properties of hMSCs during long term cultivation in control and transforming growth factor-β1 treatment groups using micropipette aspiration technique. The mean Young’s modulus (E) of the control samples remained nearly unchanged during 6 days of cultivation, but that of the test samples showed an initial reduction compared to its relevant control sample after 2 days of treatment by biological growth factor, followed by a significant rise after 4 and 6 days. The viscoelastic creep tests showed that both instantaneous and equilibrium moduli significantly increased with the treatment time and reached to maximum values of 622.9 ± 114.2 and 144.3 ± 11.6 Pa at the sixth day, respectively, while increase in apparent viscosity was not statistically significant. Such change of mechanical properties of hMSCs during specific lineage commitment contributes to regenerative medicine as well as stem-cell-based therapy in which biophysical signals regulate stem cell fate.

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Authors and Affiliations

  1. Faculty of Biomedical Engineering, Amirkabir University of Technology (Tehran Polytechnic), Tehran, Iran

    Mohammad-Mehdi Khani, Mohammad Tafazzoli-Shadpour & Mostafa Rostami

  2. Medical Nanotechnology and Tissue Engineering Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran

    Habibollah Peirovi & Mohsen Janmaleki

Authors
  1. Mohammad-Mehdi Khani
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  2. Mohammad Tafazzoli-Shadpour
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  3. Mostafa Rostami
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  4. Habibollah Peirovi
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  5. Mohsen Janmaleki
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Correspondence to Mohammad Tafazzoli-Shadpour.

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Associate Editor Cheng Dong oversaw the review of this article.

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Khani, MM., Tafazzoli-Shadpour, M., Rostami, M. et al. Evaluation of Mechanical Properties of Human Mesenchymal Stem Cells During Differentiation to Smooth Muscle Cells. Ann Biomed Eng 42, 1373–1380 (2014). https://doi.org/10.1007/s10439-013-0889-0

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  • DOI: https://doi.org/10.1007/s10439-013-0889-0

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