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Published on: April 19, 2015
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Zero-valent iron nanoparticles containing nanofiber scaffolds for nerve tissue engineering.
Umran Aydemir Sezer1,2,3, Kevser Ozturk Yavuz4, Gizem Ors5,6
1Faculty of Medicine, Department of Pharmacology, Medicine, Medical Devices and Dermocosmetic Research and Application Laboratory (IDAL), Suleyman Demirel University, Isparta, Turkey.
Journal of Tissue Engineering and Regenerative Medicine
|October 3, 2020
Summary
Biodegradable conductive nerve grafts with iron nanoparticles show promise for peripheral nerve regeneration. The optimal concentration of iron nanoparticles enhanced nerve cell growth and neurite extension in vitro.
Area of Science:
- Biomaterials Science
- Regenerative Medicine
- Nanotechnology
Background:
- Peripheral nerve defects from accidents pose significant health challenges.
- Biodegradable nerve grafts are crucial for peripheral nerve repair to avoid secondary surgeries.
- Incorporating conductive nanomaterials can enhance nerve tissue engineering, but their degradability is a concern.
Purpose of the Study:
- To develop biodegradable and conductive nerve tissue engineering materials using zero-valent iron (Fe) nanoparticles.
- To investigate the in vitro efficacy of these novel materials for nerve regeneration.
Main Methods:
- Electrospinning technique was employed to create fibrous mats of poly(ε-caprolactone) (PCL) nanofibers and Fe nanoparticles.
- The electrical conductivity and mechanical properties of the PCL/Fe composite mats were evaluated.
- In vitro cytotoxicity and cell growth studies using SH-SY5Y cells and dorsal root ganglion neurons were performed.
Main Results:
- PCL/Fe composite mats exhibited enhanced electrical conductivity compared to pure PCL mats.
- Conductivity increased significantly with higher Fe nanoparticle concentrations (e.g., PCL/Fe10).
- While PCL/Fe20 showed toxicity, PCL/Fe10 supported optimal growth of SH-SY5Y cells and promoted neurite extension in dorsal root ganglion neurons.
Conclusions:
- Zero-valent iron nanoparticles can be effectively incorporated into biodegradable PCL nanofibers for nerve tissue engineering.
- The concentration of Fe nanoparticles is critical, with 10% (PCL/Fe10) demonstrating the best biocompatibility and nerve regeneration promotion.
- These findings highlight the potential of conductive Fe nanoparticles in enhancing peripheral nerve regeneration strategies.
