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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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Cell Sheet-Based Tissue Engineering for Organizing Anisotropic Tissue Constructs Produced Using Microfabricated
Hironobu Takahashi1, Teruo Okano1
1Institute of Advanced Biomedical Engineering and Science, Tokyo Women's Medical University, 8-1 Kawada-cho, Shinjuku-ku, Tokyo, 162-8666, Japan.
Advanced Healthcare Materials
|June 3, 2015
Summary
Tissue engineering can now create complex, scaffold-free tissues by layering aligned cell sheets. This method mimics native tissue microstructures for enhanced biological function and future applications.
Area of Science:
- Biomaterials Science
- Regenerative Medicine
- Tissue Engineering
Background:
- Native tissues possess specific microstructures, like oriented cells and extracellular matrix, crucial for mechanical and biological functions.
- Examples include skeletal muscle's myofibers and the 3D organization of arterial and myocardial tissues.
Purpose of the Study:
- To develop a method for creating three-dimensional (3D) engineered tissues with organized microstructures.
- To leverage cell sheet technology for scaffold-free tissue construction.
Main Methods:
- Utilizing microfabricated thermoresponsive substrates to harvest aligned cells as continuous cell sheets.
- Employing a layer-by-layer construction technique to assemble these cell sheets into 3D tissue constructs.
Main Results:
- Successfully produced scaffold-free engineered tissues using aligned cell sheets as anisotropic units.
- Demonstrated the potential to build 3D constructs with controlled anisotropy, mimicking native tissue organization.
- Observed unique cell behaviors due to the scaffold-free, cell-dense environment and cell-cell interactions.
Conclusions:
- Cell sheet-based tissue engineering offers a straightforward approach to creating complex, anisotropic tissues.
- This technology holds significant potential for producing well-organized tissues that closely replicate native structure and function.
- The scaffold-free, cell-dense environment promotes beneficial cell-cell interactions for tissue development.
