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Updated: May 31, 2026
04:48
Generation of Induced Pluripotent Stem Cell-Derived iTenocytes via Combined Scleraxis Overexpression and 2D Uniaxial Tension
Published on: March 1, 2024
Tenocyte contraction induces crimp formation in tendon-like tissue
Andreas Herchenhan1, Nicholas S Kalson1, David F Holmes1
1Wellcome Trust Centre for Cell-Matrix Research, Faculty of Life Sciences, Michael Smith Building, University of Manchester, Oxford Road, Manchester M13 9PT UK.
Biomechanics and Modeling in Mechanobiology
|July 8, 2011
Summary
Embryonic tendon fibroblasts create a wavy collagen structure called crimp through cell contraction. This process, mimicking in vivo development, reveals key mechanical factors influencing crimp formation and wavelength.
Area of Science:
- Biomechanical Engineering
- Developmental Biology
- Materials Science
Background:
- Tendons feature a collagenous crimp structure crucial for mechanical function.
- The mechanism of embryonic crimp formation remains largely unknown due to in vivo study limitations.
Purpose of the Study:
- To investigate the mechanism of collagenous crimp formation in embryonic tendons.
- To utilize a 3D cell culture system to replicate tendon development.
- To determine the role of fibroblast contraction in crimp establishment.
Main Methods:
- 3D cell culture of embryonic tendon fibroblasts to create tendon-like constructs.
- Microscopy techniques (polarized light, scanning electron, fluorescence) for structural analysis.
- Tensile testing to evaluate mechanical properties and finite element modeling.
Main Results:
- Tendon constructs exhibited a regular, wavy collagen fibril pattern resembling embryonic crimp.
- Fibroblast contraction was identified as the critical factor inducing collagen fibril buckling and crimp formation.
- Finite element models confirmed fibroblast contraction as sufficient for generating wavy patterns, with wavelength dependent on fibril and matrix stiffness.
Conclusions:
- A novel mechanism for embryonic tendon crimp formation driven by fibroblast contraction is proposed.
- The study provides insights into the mechanical requirements for establishing tendon microstructure.
- Findings contribute to understanding tendon development and biomechanics.
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