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Microstructurally and mechanically tunable acellular hydrogel scaffold using carboxymethyl cellulose for potential
Tianxing Gong1, Zhili Zhang1, Xinyu Liu2
1School of Electrical Engineering, Shenyang University of Technology, 111 Shenliao West Road, Shenyang 110870, China.
International Journal of Biological Macromolecules
|September 3, 2023
Summary
This study developed a tunable carboxymethyl cellulose hydrogel scaffold for osteochondral tissue repair. The acellular hydrogel scaffold supports stem cell differentiation, showing promise for regenerative medicine.
Area of Science:
- Biomaterials Science
- Tissue Engineering
- Regenerative Medicine
Background:
- Scaffold properties critically influence stem cell behavior in tissue engineering.
- Osteochondral tissue repair requires advanced biomaterials that mimic native tissue mechanics.
- Carboxymethyl cellulose (CMC) offers potential for fabricating functional hydrogel scaffolds.
Purpose of the Study:
- To develop a facile method for fabricating acellular hydrogel scaffolds (AHS) using CMC.
- To investigate the influence of crosslinking degree, crosslinker length, and matrix density on AHS properties.
- To evaluate the in vitro biocompatibility and stem cell response to the developed AHS for osteochondral applications.
Main Methods:
- Fabrication of CMC-based acellular hydrogel scaffolds (AHS).
- Characterization of mechanical stiffness (50-300 kPa) and microporous size (50-200 μm).
- In vitro assessment of AHS biocompatibility with rabbit bone marrow stem cells.
Main Results:
- Tunable mechanical stiffness and adjustable microporous structures were achieved in CMC-based AHS.
- The AHS demonstrated excellent biocompatibility.
- The scaffold did not impede the dual-lineage differentiation of stem cells into osteoblasts and chondrocytes.
Conclusions:
- The developed CMC-based AHS offers tunable mechanical and structural properties suitable for osteochondral tissue engineering.
- The AHS supports stem cell viability and differentiation, indicating its potential for regenerative therapies.
- This fabrication approach presents a promising strategy for advancing osteochondral defect repair.
