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Construction of a Multilayered Mesenchymal Stem Cell Sheet with a 3D Dynamic Culture System
Published on: October 20, 2018
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Functional aligned mesenchymal stem cell sheets fabricated using micropatterned thermo-responsive cell culture
Kenichi Nagase1,2, Hasumi Kuramochi2, David W Grainger3,4
1Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima City, Hiroshima, 734-8553, Japan.
Materials Today. Bio
|April 1, 2025
Summary
Oriented mesenchymal stem cell (MSC) sheets, created using patterned surfaces, show enhanced therapeutic cytokine secretion and differentiation potential. These aligned MSC sheets offer improved functional properties for regenerative medicine and cell transplantation therapies.
Area of Science:
- Biomaterials Science
- Regenerative Medicine
- Cell Biology
Background:
- Mesenchymal stem cells (MSCs) are crucial for regenerative therapy due to their cytokine secretion.
- Cultured MSC sheets enhance therapeutic cytokine release compared to suspensions.
- Cellular orientation influences the function of engineered tissue implants.
Purpose of the Study:
- To develop a method for creating oriented mesenchymal stem cell sheets using patterned, temperature-responsive surfaces.
- To investigate the impact of cell alignment on MSC cytokine secretion and differentiation capabilities.
- To explore the potential of aligned MSC sheets for enhanced cell sheet transplant therapies.
Main Methods:
- Fabrication of patterned culture surfaces by grafting polyacrylamide (PAAm) onto poly(N-isopropylacrylamide) (PNIPAAm)-coated substrates via photopolymerization.
- Characterization of patterned surfaces using techniques including X-ray photoelectron spectroscopy, adsorption assays, contact angle measurements, AFM, and SEM.
- Culture of MSCs on patterned surfaces to produce cell-aligned MSC sheets.
Main Results:
- Successfully fabricated striped grafted patterns of PAAm on PNIPAAm-coated substrates.
- Produced cell-aligned MSC sheets exhibiting significantly higher secretion of therapeutic cytokines (VEGF, HGF, TGF-β) compared to non-aligned controls.
- Demonstrated that aligned MSC sheets retain enhanced multi-potent differentiation capabilities.
Conclusions:
- Patterned, temperature-responsive surfaces enable the production of oriented MSC sheets.
- Aligned MSC sheets exhibit superior functional properties, including increased therapeutic cytokine secretion and maintained differentiation potential.
- These findings suggest that aligned MSC sheets hold promise for advancing cell sheet transplant therapies in regenerative medicine.
