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Tissue Engineering: Construction of a Multicellular 3D Scaffold for the Delivery of Layered Cell Sheets
Published on: October 3, 2014
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Tension stimulation drives tissue formation in scaffold-free systems
Jennifer K Lee1, Le W Huwe1, Nikolaos Paschos1
1Department of Biomedical Engineering, University of California, Davis, One Shields Avenue, Davis, California 95616, USA.
Nature Materials
|June 13, 2017
Summary
Tension stimulation significantly improves the mechanical properties of engineered cartilage, making it closer to native tissue. This breakthrough in tissue engineering offers potential for creating robust biological replacements.
Area of Science:
- Biomaterials Science
- Tissue Engineering
- Regenerative Medicine
Background:
- Scaffold-free tissue engineering is promising for load-bearing tissues.
- Engineered tissues currently lack the tensile strength of native tissues.
Purpose of the Study:
- To investigate the effects of tension stimulation on neocartilage formation and tensile properties.
- To assess the potential of tension stimulation for engineering mechanically robust tissues.
Main Methods:
- Utilized self-assembled articular cartilage as a model system.
- Applied intermittent and continuous tension stimulation, with and without matrix agents.
- Evaluated tensile properties and morphological characteristics of engineered tissues.
- Translated findings to a human cell source.
Main Results:
- Tension stimulation alone or with agents improved neocartilage tensile properties, approaching native tissue values.
- Implanted tension-stimulated tissues showed morphology similar to native cartilage.
- Anisotropic human neocartilage with enhanced tensile properties was generated using human cells.
- A nearly sixfold improvement in tensile properties was observed compared to unstimulated controls.
Conclusions:
- Tension stimulation is a key factor in enhancing the mechanical robustness of engineered cartilage.
- This method holds promise for developing mechanically sound biological replacements for native tissues.
