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Updated: May 12, 2026
06:05
Integrated Bone Formation Through In Vivo Endochondral Ossification Using Mesenchymal Stem Cells
Published on: July 14, 2023
Induced collagen cross-links enhance cartilage integration
Aristos A Athens1, Eleftherios A Makris, Jerry C Hu
1Department of Biomedical Engineering, University of California Davis, Davis, California, United States of America.
Plos One
|April 18, 2013
Summary
Lysyl-oxidase application significantly enhanced cartilage integration by increasing stiffness and strength at the interface. This enzyme shows promise for improving cartilage repair and tissue engineering applications.
Area of Science:
- Biomaterials Science
- Orthopedic Surgery
- Tissue Engineering
Background:
- Articular cartilage integration is limited by poor cross-linking and cell viability at interfaces.
- Developing methods to enhance cartilage repair and integration is crucial for treating joint injuries.
Purpose of the Study:
- To investigate the efficacy of lysyl-oxidase in improving cartilage integration.
- To test if lysyl-oxidase enhances integration between native-to-native and engineered-to-native cartilage surfaces.
Main Methods:
- Engineered cartilage constructs and native cartilage were implanted into native cartilage rings.
- Treated implants with lysyl-oxidase for varying durations.
- Assessed interface integration using mechanical testing (stiffness, strength) and histology.
Main Results:
- Lysyl-oxidase increased apparent stiffness 2-2.2 times compared to controls.
- Significant increase in apparent strength observed in construct-to-native cartilage treated with lysyl-oxidase.
- Histology showed a narrowed interface gap with longer lysyl-oxidase treatment, suggesting improved integration.
Conclusions:
- Lysyl-oxidase is effective in enhancing integration between native-to-native and native-to-engineered cartilage interfaces.
- Increased interfacial strength suggests cross-linking agents are vital for cartilage integration solutions.
- Further research on lysyl-oxidase dosage and cellular response is needed for optimization.
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