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Elastic biodegradable poly(glycolide-co-caprolactone) scaffold for tissue engineering.
Soo-Hong Lee1, Byung-Soo Kim, Soo Hyun Kim
1Biomaterials Research Center, Korea Institute of Science and Technology, P.O. Box 131, Cheongryang, Seoul 130-650, Korea.
Journal of Biomedical Materials Research. Part A
|July 2, 2003
Summary
Researchers developed elastic biodegradable poly(glycolide-co-caprolactone) (PGCL) scaffolds for tissue engineering. These advanced PGCL scaffolds exhibit superior elasticity and recovery, ideal for creating smooth muscle tissues under dynamic mechanical loading.
Area of Science:
- Biomaterials Science
- Tissue Engineering
- Polymer Chemistry
Background:
- Cyclic mechanical strain is crucial for developing functional engineered smooth muscle (SM) tissues.
- Elastic scaffolds are necessary for engineering SM tissues under cyclic mechanical loading conditions.
Purpose of the Study:
- To develop and characterize an elastic scaffold from biodegradable poly(glycolide-co-caprolactone) (PGCL) copolymer.
- To evaluate the suitability of PGCL scaffolds for engineering smooth muscle tissues in mechanically dynamic environments.
Main Methods:
- Synthesized PGCL copolymer using glycolide, epsilon-caprolactone, and stannous octoate catalyst.
- Fabricated scaffolds using solvent-casting and particle-leaching, creating open pore structures (250 microm).
- Characterized copolymer via (1)H-NMR, GPC, and DSC; evaluated scaffold elasticity and recovery through tensile and dynamic mechanical testing.
Main Results:
- PGCL scaffolds demonstrated significantly higher elasticity (250% extension) and recovery (>96% at 230% extension) compared to PLGA scaffolds.
- PGCL scaffolds exhibited low permanent deformation (<4% dry, <5% in buffer) under cyclic strain.
- Successful in vivo engineering of smooth muscle tissues using PGCL scaffolds was demonstrated.
Conclusions:
- Elastic PGCL scaffolds possess superior mechanical properties compared to traditional PLGA scaffolds.
- The developed PGCL scaffolds are suitable for engineering smooth muscle tissues in dynamic mechanical environments, such as blood vessels and bladders.