3D-Printed Reinforcement Scaffolds with Targeted Biodegradation Properties for the Tissue Engineering of Articular Cartilage.
Details
Download: ETH articleadhm.202101094_.pdf (4491.02 [Ko])
State: Public
Version: Final published version
License: CC BY-NC 4.0
State: Public
Version: Final published version
License: CC BY-NC 4.0
Serval ID
serval:BIB_2DB2DF4F8CC6
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
3D-Printed Reinforcement Scaffolds with Targeted Biodegradation Properties for the Tissue Engineering of Articular Cartilage.
Journal
Advanced healthcare materials
ISSN
2192-2659 (Electronic)
ISSN-L
2192-2640
Publication state
Published
Issued date
12/2021
Peer-reviewed
Oui
Volume
10
Number
23
Pages
e2101094
Language
english
Notes
Publication types: Journal Article
Publication Status: ppublish
Publication Status: ppublish
Abstract
Achieving regeneration of articular cartilage is challenging due to the low healing capacity of the tissue. Appropriate selection of cell source, hydrogel, and scaffold materials are critical to obtain good integration and long-term stability of implants in native tissues. Specifically, biomechanical stability and in vivo integration can be improved if the rate of degradation of the scaffold material matches the stiffening of the sample by extracellular matrix secretion of the encapsulated cells. To this end, a novel 3D-printed lactide copolymer is presented as a reinforcement scaffold for an enzymatically crosslinked hyaluronic acid hydrogel. In this system, the biodegradable properties of the reinforced scaffold are matched to the matrix deposition of articular chondrocytes embedded in the hydrogel. The lactide reinforcement provides stability to the soft hydrogel in the early stages, allowing the composite to be directly implanted in vivo with no need for a preculture period. Compared to pure cellular hydrogels, maturation and matrix secretion remain unaffected by the reinforced scaffold. Furthermore, excellent biocompatibility and production of glycosaminoglycans and collagens are observed at all timepoints. Finally, in vivo subcutaneous implantation in nude mice shows cartilage-like tissue maturation, indicating the possibility for the use of these composite materials in one-step surgical procedures.
Keywords
Animals, Cartilage, Articular, Chondrocytes, Hydrogels, Mice, Mice, Nude, Printing, Three-Dimensional, Regeneration, Tissue Engineering, Tissue Scaffolds, 3D-printing, cartilage engineering, enzymatically crosslinked hydrogels, hybrid reinforcement scaffolds, lactide-copolymers
Pubmed
Web of science
Open Access
Yes
Create date
19/10/2021 11:32
Last modification date
20/07/2024 6:10