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Updated: May 7, 2026
3D Hydrogel Scaffolds for Articular Chondrocyte Culture and Cartilage Generation
Published on: October 7, 2015
Scaffold-assisted cartilage tissue engineering using infant chondrocytes from human hip cartilage
P C Kreuz1, C Gentili, B Samans
1Department of Orthopaedic Surgery, University Medical Center Rostock, Doberanerstrasse 142, 18057 Rostock, Germany.
Insights
Infant hip chondrocytes in polyglycolic acid (PGA)-fibrin scaffolds show potential for cartilage repair. Platelet-rich plasma (PRP) addition improved hyaline cartilage formation, overcoming limitations of heterogeneous donor tissue.
Area of Science:
- Orthopedics and Regenerative Medicine
- Tissue Engineering
- Cartilage Biology
Background:
- Studies on hip cartilage repair using infant chondrocytes are limited.
- Infant articular chondrocytes offer a potential cell source for cartilage tissue engineering.
Purpose of the Study:
- To evaluate infant articular hip chondrocytes for scaffold-assisted cartilage graft engineering.
- To assess chondrocyte redifferentiation and cartilage matrix formation in vitro and in vivo.
Main Methods:
- Hip cartilage from 5 donors (1-10 years) was used.
- Chondrocytes were expanded and cultured in polyglycolic acid (PGA)-fibrin scaffolds.
- In vivo assessment involved subcutaneous transplantation in immunocompromised mice.
Main Results:
- Expanded chondrocytes re-expressed chondrocytic markers when cultured in PGA-fibrin scaffolds.
- Subcutaneous grafts showed variable cartilage formation, including resorption and hyaline cartilage.
- Addition of human platelet-rich plasma (PRP) robustly promoted hyaline-like cartilage formation.
Conclusions:
- Culture in PGA-fibrin scaffolds can re-differentiate infant hip chondrocytes.
- Heterogeneous donor tissue poses a risk for cartilage repair failure.
- PRP addition may overcome limitations associated with immature chondrocytes and improve graft outcomes.
Objective:
Studies about cartilage repair in the hip and infant chondrocytes are rare. The aim of our study was to evaluate the use of infant articular hip chondrocytes for tissue engineering of scaffold-assisted cartilage grafts.
Method:
Hip cartilage was obtained from five human donors (age 1-10 years). Expanded chondrocytes were cultured in polyglycolic acid (PGA)-fibrin scaffolds. De- and re-differentiation of chondrocytes were assessed by histological staining and gene expression analysis of typical chondrocytic marker genes. In vivo, cartilage matrix formation was assessed by histology after subcutaneous transplantation of chondrocyte-seeded PGA-fibrin scaffolds in immunocompromised mice.
Results:
The donor tissue was heterogenous showing differentiated articular cartilage and non-differentiated tissue and considerable expression of type I and II collagens. Gene expression analysis showed repression of typical chondrocyte and/or mesenchymal marker genes during cell expansion, while markers were re-induced when expanded cells were cultured in PGA-fibrin scaffolds. Cartilage formation after subcutaneous transplantation of chondrocyte loaded PGA-fibrin scaffolds in nude mice was variable, with grafts showing resorption and host cell infiltration or formation of hyaline cartilage rich in type II collagen. Addition of human platelet rich plasma (PRP) to cartilage grafts resulted robustly in formation of hyaline-like cartilage that showed type II collagen and regions with type X collagen.
Conclusion:
These results suggest that culture of expanded and/or de-differentiated infant hip cartilage cells in PGA-fibrin scaffolds initiates chondrocyte re-differentiation. The heterogenous donor tissue containing immature chondrocytes bears the risk of cartilage repair failure in vivo, which may be possibly overcome by the addition of PRP.
