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Bioactive Scaffolds with Ordered Micro/Nano-Scale Topological Surface for Vascularized Bone Regeneration
Zhibo Yang1, Xiaopeng Yu1, Jiajie Chen1
1State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Road, Shanghai, 200050, P. R. China.
Small (Weinheim an Der Bergstrasse, Germany)
|April 7, 2025
Summary
A new brushing-assembly method creates 3D bioactive scaffolds with ordered micro/nanostructures, enhancing bone regeneration by stimulating cells and enabling precise cell distribution for tissue engineering.
Area of Science:
- Biomaterials Science
- Tissue Engineering
- Regenerative Medicine
Background:
- Ordered topological micro/nanostructures are crucial for bone development and regeneration.
- Integrating these ordered structures into 3D scaffolds presents a significant challenge in tissue engineering.
Purpose of the Study:
- To develop a novel strategy for fabricating 3D bioactive scaffolds with integrated ordered micro/nanostructures.
- To investigate the effect of these engineered scaffolds on bone resident cells and vascularized bone regeneration.
Main Methods:
- A brushing-assembly strategy was employed to construct 3D bioactive scaffolds.
- The scaffolds' impact on mesenchymal stem cells (MSCs) and human umbilical vein endothelial cells (HUVECs) was assessed.
- In vivo experiments were conducted to evaluate vascularized bone regeneration.
Main Results:
- The engineered scaffolds exhibited ordered micro/nanostructures that positively regulated cell behavior and fate.
- Mechanical stimulation from the ordered structures influenced cell behavior.
- The scaffolds facilitated precise spatial distribution of multiple cell types.
- In vivo studies showed accelerated vascularized bone regeneration.
Conclusions:
- The brushing-assembly strategy offers a universal approach for fabricating bioactive scaffolds with ordered topological micro/nanostructures.
- This method bridges the gap between 3D scaffolds and ordered surface microstructures for advanced tissue engineering applications.
- The developed scaffolds show significant potential for enhancing bone regeneration.
