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Human Cartilage Tissue Fabrication Using Three-dimensional Inkjet Printing Technology
Published on: June 10, 2014
3D-printed fish gelatin scaffolds for cartilage tissue engineering
Abudureheman Maihemuti1,2, Han Zhang3, Xiang Lin3
1State Key Laboratory of Pharmaceutical Biotechnology, Division of Sports Medicine and Adult Reconstructive Surgery, Department of Orthopedic Surgery, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, 321 Zhongshan Road, Nanjing, 210008, Jiangsu, PR China.
Researchers developed a 3D printed scaffold from fish skin gelatin for cartilage regeneration in knee osteoarthritis. This biodegradable scaffold shows promising results in repairing damaged cartilage in animal models.
Area of Science:
- Biomaterials Science
- Regenerative Medicine
- Orthopedics
Background:
- Knee osteoarthritis is a degenerative joint disease with limited treatment options due to cartilage's poor self-repair capacity.
- Current treatments for osteoarthritis often fail to address the underlying cartilage deterioration, highlighting the need for innovative regenerative strategies.
Purpose of the Study:
- To develop and evaluate a novel 3D printed porous multilayer scaffold using cold-water fish skin gelatin for osteoarticular cartilage regeneration.
- To assess the biocompatibility, biodegradability, and efficacy of the fish gelatin scaffold in a rat model of cartilage defects.
Main Methods:
- A hybrid hydrogel was formulated by combining cold-water fish skin gelatin with sodium alginate for improved printability and mechanical properties.
- The hydrogel was 3D printed into a specific porous multilayer structure and subsequently underwent a double-crosslinking process to enhance mechanical strength.
- The scaffold's ability to support chondrocyte adhesion, proliferation, and communication was evaluated.
- The scaffold's biocompatibility (non-immunogenic, non-toxic) and biodegradability were assessed.
- The scaffold was implanted into defective rat cartilage for 12 weeks to evaluate its repair potential.
Main Results:
- The 3D printed fish gelatin scaffolds successfully mimicked the native cartilage structure, facilitating chondrocyte functions.
- The scaffolds demonstrated excellent biocompatibility, being non-immunogenic and non-toxic, and were found to be biodegradable.
- In vivo implantation in a rat model showed satisfactory cartilage repair after 12 weeks.
Conclusions:
- Cold-water fish skin gelatin can be utilized to create 3D printed porous scaffolds for osteoarticular cartilage regeneration.
- These scaffolds offer a promising, biocompatible, and biodegradable solution for cartilage repair, with potential applications in regenerative medicine for knee osteoarthritis.
