Related Experiment Video
Updated: Jun 21, 2026
11:13
Composite Scaffolds of Interfacial Polyelectrolyte Fibers for Temporally Controlled Release of Biomolecules
Published on: August 19, 2015
Poly-epsilon-caprolactone/gel hybrid scaffolds for cartilage tissue engineering
J C Schagemann1, H W Chung, E H Mrosek
1Cartilage and Connective Tissue Research Laboratory, Department of Orthopedic Research, Mayo Clinic College of Medicine, Rochester, Minnesota.
Journal of Biomedical Materials Research. Part A
|July 8, 2009
Summary
Hybrid scaffolds combining poly-epsilon-caprolactone (PCL) with hyaluronan (HA) or chitosan (CS) show promise for cartilage tissue engineering, promoting neocartilage formation and cell retention in vitro.
Area of Science:
- Biomaterials Science
- Tissue Engineering
- Regenerative Medicine
Background:
- Developing functional neocartilage requires suitable biomaterial scaffolds that support chondrocyte growth and extracellular matrix deposition.
- Hybrid scaffolds integrating natural biopolymers with synthetic polymers offer tunable properties for cartilage regeneration.
Purpose of the Study:
- To evaluate the efficacy of hybrid scaffolds made from poly-epsilon-caprolactone (PCL) and various biopolymers (hyaluronan, chitosan, fibrin, collagen) for in vitro neocartilage formation.
- To assess chondrocyte behavior, proliferation, and extracellular matrix production within these hybrid scaffolds over 50 days.
Main Methods:
- Rabbit articular chondrocytes were seeded into PCL-based hybrid scaffolds: PCL/HA, PCL/CS, PCL/F, and PCL/COL1.
- Scaffolds were cultured statically for up to 50 days, with growth evaluated via histology, SEM, and confocal microscopy.
- Neocartilage formation was quantified by measuring sulfated glycosaminoglycans (sGAG) and type II collagen (COL2) relative to DNA content.
Main Results:
- Chondrocytes distributed homogeneously and adopted a spheroidal shape initially, with proteoglycan deposition increasing over time.
- PCL/HA scaffolds showed the highest sGAG yields, while PCL/CS scaffolds demonstrated increasing total sGAG and significantly higher total COL2 at day 50.
- Cell proliferation varied, with PCL/HA showing peaks at days 3 and 25, and PCL/COL1 at day 12; overall DNA content decreased over time.
Conclusions:
- PCL/HA and PCL/CS hybrid scaffolds effectively supported neocartilage formation and initial cell retention in vitro.
- These specific hybrid scaffolds are promising candidates for cartilage tissue engineering applications.
- Other hybrids (PCL/F, PCL/COL1) provided less beneficial short-term environments for chondrocytes.
