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Electrospun Nanofiber Scaffolds with Gradations in Fiber Organization
Published on: April 19, 2015
Novel biodegradable three-dimensional macroporous scaffold using aligned electrospun nanofibrous yarns for bone
You-Zhi Cai1, Guo-Rong Zhang, Lin-Lin Wang
1Center for Stem Cells and Tissue Engineering, School of Medicine, Zhejiang University, Zhejiang, China.
Journal of Biomedical Materials Research. Part A
|February 21, 2012
Summary
A novel 3D macroporous nanofibrous scaffold promotes bone formation. This electrospun scaffold supports cell growth and guides new bone tissue development in vitro and in vivo.
Area of Science:
- Biomaterials Science
- Regenerative Medicine
- Tissue Engineering
Background:
- Bone tissue engineering requires advanced scaffolds for bone regeneration.
- Electrospun nanofibers offer potential for creating bone scaffolds.
- Developing practical, macroporous scaffolds is crucial for clinical translation.
Purpose of the Study:
- To develop a practical 3D macroporous scaffold from aligned electrospun nanofibrous yarns.
- To evaluate the efficacy of this novel scaffold for bone formation using in vitro and in vivo models.
Main Methods:
- Manufactured a 3D unwoven macroporous nanofibrous (MNF) scaffold using poly(L-lactic acid) and polycaprolactone nanofibers.
- Evaluated scaffold efficacy using human embryonic stem cell-derived mesenchymal stem cells (hESC-MSCs) and a rabbit tibia bone defect model.
Main Results:
- The 3D MNF scaffold demonstrated enhanced cell proliferation and ingrowth in vitro.
- Significant calcium deposition was observed in hESC-MSCs cultured on the scaffold.
- In vivo studies showed robust 3D bony tissue formation within and around the scaffold in rabbit tibia defects.
Conclusions:
- The 3D MNF scaffold provides structural support for cell growth and effectively guides bone formation.
- This novel scaffold strategy shows promise for bone tissue engineering and regenerative medicine applications.
