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Related Experiment Video

Updated: Dec 26, 2025

Applying a Three-dimensional Uniaxial Mechanical Stimulation Bioreactor System to Induce Tenogenic Differentiation of Tendon-Derived Stem Cells
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Applying a Three-dimensional Uniaxial Mechanical Stimulation Bioreactor System to Induce Tenogenic Differentiation of Tendon-Derived Stem Cells

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Cyclical strain improves artificial equine tendon constructs in vitro.

Francesca Atkinson1,2, Richard Evans1, James E Guest3

  • 1Animal Health Trust, Suffolk, UK.

Journal of Tissue Engineering and Regenerative Medicine
|March 18, 2020
PubMed
Summary
This summary is machine-generated.

Cyclical strain applied to equine tenocyte cultures in a novel bioreactor enhanced collagen gel contraction and improved mechanical properties of tendon constructs. This research aids in developing better equine regenerative therapies for tendon injuries.

Keywords:
3D culturedynamic shear analysisequinemechanical propertiestendon cells

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Area of Science:

  • Biomaterials Science
  • Veterinary Regenerative Medicine
  • Tissue Engineering

Background:

  • Tendon injuries are prevalent in humans and horses, necessitating effective regenerative therapies.
  • Understanding the mechanical environment's role in tendon cell culture is crucial for developing novel treatments.
  • Equine models offer valuable insights for human tendon injury research.

Purpose of the Study:

  • To investigate the influence of mechanical strain on equine tenocyte behavior in a 3D culture system.
  • To develop and utilize a custom-made bioreactor for applying cyclical strain to tendon constructs.
  • To assess the impact of mechanical stimulation on the regeneration and mechanical properties of engineered tendon tissue.

Main Methods:

  • Equine tenocytes were cultured in a 3D system within a novel, affordable bioreactor.
  • Cyclical strain (10%) was applied to tendon-like constructs.
  • Mechanical and chemical properties were analyzed using dynamic shear analysis (DSA), dynamic scanning calorimetry (DSC), and Fourier-transform infrared (FTIR) spectroscopy.

Main Results:

  • Equine tenocytes exposed to 10% cyclical strain showed increased collagen gel contraction after 7-8 days.
  • All engineered tendon constructs exhibited chemical compositions similar to native tendon.
  • Application of cyclical strain significantly improved the mechanical properties of the tendon-like constructs.

Conclusions:

  • Mechanical stimulation via cyclical strain positively influences equine tenocyte behavior and extracellular matrix production.
  • The developed bioreactor system provides a biomimetic model for studying tendon regeneration.
  • These findings support the advancement of equine regenerative therapies for tendon injuries.