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Elastomeric and Conductive Nerve Conduits From Poly(Glycerol-Sebacate)/Carbon Nanofibers (PGS/CNFs)
Bengisu Topuz1, Dincer Gokcen2, Halil Murat Aydin1,3
1Bioengineering Division, Institute of Science, Hacettepe University, Ankara, Turkey.
Journal of Biomedical Materials Research. Part A
|November 7, 2024
Summary
Researchers developed novel conductive nerve conduits using poly (glycerol-sebacate) (PGS) elastomer and carbon nanofibers (CNFs). These channeled structures significantly enhanced nerve cell proliferation and guided cell growth, showing promise for peripheral nerve tissue engineering.
Area of Science:
- Biomaterials Science
- Tissue Engineering
- Neuroscience
Background:
- Peripheral nerve injuries significantly impact patient quality of life due to limited nerve regeneration.
- Nerve conduits serve as scaffolds to aid regeneration by mimicking tissue properties and facilitating cellular activity.
- Developing advanced nerve conduits with enhanced scaffolding, conductivity, and cytocompatibility is crucial for effective nerve repair.
Purpose of the Study:
- To investigate the potential of channeled poly (glycerol-sebacate) (PGS) elastomer structures incorporating carbon nanofibers (CNFs) for peripheral nerve regeneration.
- To engineer nerve conduits with tailored mechanical properties, electrical conductivity, and cellular compatibility.
- To evaluate the efficacy of these novel constructs in promoting nerve cell growth and alignment.
Main Methods:
- Synthesis and property tuning of poly (glycerol-sebacate) (PGS) elastomer.
- Fabrication of microchanneled structures on PGS using CO2 laser ablation.
- Incorporation of functionalized carbon nanofibers (CNFs) into the PGS elastomer to create conductive composites.
- In vitro evaluation of cell behavior (proliferation and alignment) using PC12 and S42 cell lines.
Main Results:
- The synthesized PGS elastomer and PGS-CNF composites exhibited suitable properties for nerve tissue engineering.
- Microchannels on the elastomer surface effectively guided the growth of nerve cells.
- A statistically significant increase in cell proliferation was observed for both PC12 and S42 cell lines on the constructs.
- The conductive PGS-CNF constructs demonstrated promising cytocompatibility and cell response.
Conclusions:
- Channeled PGS elastomer structures incorporating carbon nanofibers represent a promising biomaterial for peripheral nerve tissue engineering.
- These constructs offer tunable mechanical properties, enhanced conductivity, and support nerve cell growth and regeneration.
- The developed nerve conduits show potential for improving outcomes in patients with peripheral nerve injuries.
