Enhanced Bone Regeneration Using a ZIF-8-Loaded Fibrin Composite Scaffold
Wentao Shi1,2, Lu Bian1,3, Yiqing Wu1,2
1Jiangnan University Affiliated Hospital, Jiangnan University, Wuxi, Jiangsu Province, 214122, P. R. China.
Macromolecular Bioscience
|December 28, 2021
Summary
New ZIF-8 and fibrin gel (Z-FG) biomaterials promote skull regeneration. In vitro and in vivo studies show Z-FG enhances bone formation, indicating its potential for skull tissue engineering.
Area of Science:
- Biomaterials Science
- Tissue Engineering
- Regenerative Medicine
Background:
- Skull defects pose significant clinical challenges.
- Current bone regeneration strategies require improvement.
- Fibrin-based biomaterials offer potential but need enhanced properties.
Purpose of the Study:
- To fabricate and characterize novel zeolite imidazole framework-8 (ZIF-8) and fibrin gel (Z-FG) composite biomaterials.
- To evaluate the osteoinductive potential of Z-FG for skull regeneration.
- To investigate the in vivo efficacy of Z-FG in critical-sized calvarial defects.
Main Methods:
- Fabrication of ZIF-8/fibrin gel composites.
- Characterization using XRD, SEM, UV-vis, FTIR, and rheometry.
- In vitro assessment with ectomesenchymal stem cells (EMSCs) and in vivo testing in rat calvarial defects.
Main Results:
- ZIF-8 incorporation modulated fibrin gel properties (porosity, modulus, biodegradation).
- Z-FG enhanced EMSC osteogenic differentiation, evidenced by increased bone-related proteins, calcium deposition, and alkaline phosphatase activity.
- In vivo studies demonstrated Z-FG significantly increased bone formation in calvarial defects.
- Piezochannel and YAP signaling pathways were implicated in the differentiation process.
Conclusions:
- The developed Z-FG composite biomaterial shows promising osteoinductive properties.
- Z-FG effectively promotes bone regeneration in critical-sized calvarial defects.
- This Z-FG scaffold represents a viable candidate for skull tissue engineering applications.
