Related Experiment Video
Updated: Apr 18, 2026
09:49
Author Spotlight: Insights into the Use of Apple-Derived Cellulose Scaffolds for Bone Tissue Engineering
Published on: February 23, 2024
3.0K
Hybrid scaffolds based on PLGA and silk for bone tissue engineering
Faheem A Sheikh1, Hyung Woo Ju1, Bo Mi Moon1
1Nano-Bio Regenerative Medical Institute, College of Medicine, Hallym University, Chuncheon, South Korea.
Journal of Tissue Engineering and Regenerative Medicine
|January 29, 2015
Summary
Hybrid scaffolds combining PLGA, silk, and hydroxyapatite nanoparticles improve bone tissue engineering. These novel biomaterials enhance osteoblast activity and promote bone regeneration, overcoming limitations of traditional scaffolds.
Area of Science:
- Biomaterials Science
- Tissue Engineering
- Nanotechnology
Background:
- Natural polymers like silk have slow degradation rates, hindering tissue replacement.
- Synthetic polymers like PLGA exhibit rapid degradation, hydrophobicity, and toxic by-products.
- Existing scaffolds face challenges in optimizing degradation, biocompatibility, and mechanical properties for bone regeneration.
Purpose of the Study:
- To fabricate and evaluate hybrid scaffolds composed of poly(lactic-co-glycolic acid) (PLGA), silk, and hydroxyapatite nanoparticles (HAp NPs).
- To optimize scaffolds for enhanced bone tissue engineering by addressing limitations of individual components.
- To assess the impact of hybrid scaffold composition on physical, mechanical, and biological properties.
Main Methods:
- Fabrication of hybrid scaffolds using PLGA, silk, and HAp NPs.
- Characterization via variable-pressure field emission scanning electron microscopy (VP-FE-SEM) with EDS, contact angle measurements, thermo-gravimetric analysis (TGA), and FT-IR spectroscopy.
- In vitro evaluation of osteoblast viability and infiltration using MTT assay and fluorescent microscopy.
- In vivo assessment of bone regeneration in rat calvariae models using histological examination and micro-CT scans.
Main Results:
- VP-FE-SEM confirmed a porous architecture with proper component distribution.
- Contact angle measurements indicated improved hydrophilicity after incorporating silk and HAp NPs.
- TGA and FT-IR spectroscopy demonstrated enhanced thermal stability and mechanical properties.
- MTT assays and fluorescent microscopy showed increased osteoblast viability and infiltration.
- In vivo studies revealed significant bone induction and regeneration facilitated by the hybrid scaffolds.
Conclusions:
- Hybrid scaffolds of PLGA, silk, and HAp NPs offer a promising solution for bone tissue engineering.
- The combination of components effectively enhances scaffold hydrophilicity, mechanical properties, and biocompatibility.
- These hybrid scaffolds demonstrate significant potential for promoting osteoblast activity and bone regeneration in vitro and in vivo.
