Tissue Engineering of Auricular Cartilage
Summary
Tissue engineering of the external ear seeks to recreate the complex three-dimensional structure and mechanical properties of auricular cartilage for the reconstruction of congenital deformities, traumatic defects and post-oncological resections. Engineers combine autologous or allogeneic cells—typically chondrocytes or mesenchymal stem cells—with biomaterial scaffolds or scaffold-free constructs to direct chondrogenic differentiation and extracellular matrix formation. Advanced approaches employ customised moulds or additive bioprinting to recapitulate the intricate anatomy of the auricle, while bioreactors and dynamic mechanical stimulation promote matrix deposition and functional maturation. Attention to vascularisation, immunocompatibility and long-term mechanical stability is essential for clinical translation. Recent efforts have focused on reducing donor-site morbidity by using minimally invasive harvest of perichondrial or perivascular progenitors, and on tailoring biomaterial composition and degradation rates to match native tissue remodelling. Together, these advances are paving the way towards off-the-shelf, patient-specific ear constructs that restore both form and function with durable aesthetic outcomes and minimal complications.
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Tissue Engineering of Auricular Cartilage publication trend
The graph below shows the total number of articles in tissue engineering of auricular cartilage across all publications each year (not limited to Nature Index journals).
Technical terms
Chondrocyte: A cell responsible for producing and maintaining cartilage extracellular matrix.
Extracellular Matrix (ECM): A network of collagen, proteoglycans and elastin that gives cartilage its mechanical and elastic properties.
Scaffold: A three-dimensional biomaterial framework that supports cell attachment, growth and tissue formation.
Organoid: A miniaturised, self-organising three-dimensional cell aggregate that models native tissue architecture.
Hydrogel: A water-rich polymer network used to encapsulate cells and mimic the hydrated environment of native cartilage.
Bioprinting: An additive manufacturing technique that deposits cell-laden bioinks to create complex tissue constructs with spatial control.
References
- Scaffold‐free three‐dimensional cartilage regeneration based on cartilaginous organoids bioassembly technology. Aggregate (2024).
- Recent Progress in Cartilage Tissue Engineering—Our Experience and Future Directions. Engineering (2017).
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