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Fabrication of Decellularized Cartilage-derived Matrix Scaffolds
Published on: January 7, 2019
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Biphasic hierarchical extracellular matrix scaffold for osteochondral defect regeneration
1Department of Orthopaedic Surgery, Sir Run Run Shaw Hospital, Medical College of Zhejiang University, Hangzhou, China.
Osteoarthritis and Cartilage
|December 14, 2017
Summary
Decellularized osteochondral extracellular matrix (ECM) scaffolds show promise for regenerating cartilage defects. These hierarchical scaffolds promote tissue repair by inhibiting blood vessel growth and aiding cell movement.
Area of Science:
- Biomaterials Science
- Regenerative Medicine
- Tissue Engineering
Background:
- Degenerated cartilage exhibits reduced cell counts, altered microstructure, and impaired permeability compared to healthy tissue.
- Osteochondral defects pose significant challenges in cartilage repair due to the complex nature of the tissue.
Purpose of the Study:
- To investigate the efficacy of decellularized osteochondral extracellular matrix (ECM) scaffolds for osteochondral defect regeneration.
- To evaluate the histological and microstructural characteristics of degenerated versus normal articular cartilage.
Main Methods:
- Osteochondral ECM scaffolds were generated using decellularization technology.
- Scaffolds were implanted into rabbit models with osteochondral defects and analyzed after 12 weeks.
- Histology, immunohistochemistry, and assessments of angiogenesis and cell migration were performed.
Main Results:
- Degenerated cartilage showed decreased cellularity, fibrous cartilage formation, and compromised microstructure.
- The generated ECM scaffold possessed a hierarchical structure, low immunogenicity, high bioactivity, and good biocompatibility.
- The ECM scaffold facilitated osteochondral defect regeneration, influenced by its composition, microstructure, and ability to modulate angiogenesis and cell migration.
Conclusions:
- Biphasic hierarchical ECM scaffolds are effective biomaterials for treating osteochondral defects.
- The scaffold's properties, including its structure and biological interactions, are crucial for successful tissue regeneration.
