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Evaluation of Precise Optimal Cyclic Strain for Tenogenic Differentiation of MSCs

  • Yasuyuki Morita
  • Toshihiro Sato
  • Sachi Watanabe
  • Yang Ju
Conference paper
Part of the Conference Proceedings of the Society for Experimental Mechanics Series book series (CPSEMS)

Abstract

Although there are a number of papers relating to tenogenic differentiation of human bone marrow mesenchymal stem cells (hBMSCs) using uniaxial cyclic stretching stimulation with homogeneous strain field, it has been pretty hard to figure out the optimal normal strain in the stretch direction for the differentiation. In the present study, our group has developed a non-uniform strain field system to elucidate the optimal normal strain in one-time experiment in principle. A relationship between the normal strain of membrane and expression levels of the differentiation marker proteins, type I collagen (Col I) and tenascin-C (Tnc), derived from stretched cells was obtained. Finally, the rigorous optimal normal strains were clarified 7.9 and 8.5 % for Col I and Tnc, respectively. Additionally, we found that a dependence of protein expression levels with the normal strain of membrane was different in each protein, which would be crucial in the field of embryology and regenerative medicine.

Keywords

Digital image correlation (DIC) Optimal strain Mechanical stimulation Tenogenic differentiation Mesenchymal stem cell (MSC) 

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Copyright information

© The Society for Experimental Mechanics, Inc. 2017

Authors and Affiliations

  • Yasuyuki Morita
    • 1
  • Toshihiro Sato
    • 1
  • Sachi Watanabe
    • 1
  • Yang Ju
    • 1
  1. 1.Department of Mechanical Science and Engineering, Graduate School of EngineeringNagoya UniversityFuro-cho, Chikusa-ku, NagoyaJapan

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