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Axonal Guidance Using Biofunctionalized Straining Flow Spinning Regenerated Silk Fibroin Fibers as Scaffold.
Cristina Castro-Domínguez1,2, Paloma Lozano-Picazo2,3, Aroa Álvarez-López2,3
1Neurocomputing and Neurorobotics Research Group, Faculty of Biology and Faculty of Optics, Universidad Complutense de Madrid, 28040 Madrid, Spain.
Biomimetics (Basel, Switzerland)
|February 22, 2023
Summary
Functionalized silk fibroin fibers enhance nerve regeneration after injury. Biofunctionalization of these straining flow spinning (SFS) fibers improves axon guidance, offering potential for spinal cord injury therapies.
Area of Science:
- Biomaterials Science
- Neuroscience
- Regenerative Medicine
Background:
- Limited central nervous system regeneration hinders functional recovery after injury.
- Biomaterials offer potential for designing scaffolds to promote nerve regeneration.
- Previous work demonstrated silk fibroin fibers' regenerative capabilities.
Purpose of the Study:
- To investigate if functionalized straining flow spinning (SFS) fibers enhance neural guidance compared to non-functionalized fibers.
- To explore the potential of biofunctionalized SFS fibers for spinal cord injury (SCI) applications.
Main Methods:
- Utilized straining flow spinning (SFS) technique to produce regenerated silk fibroin fibers.
- Compared axon guidance on functionalized SFS fibers with non-functionalized controls and conventional culture plates.
- Employed biofunctionalization with adhesion peptides to modulate guidance.
Main Results:
- Axons demonstrated directed growth along SFS fibers, unlike isotropic growth on conventional plates.
- Biofunctionalization with adhesion peptides further enhanced the guidance ability of the SFS fibers.
- Demonstrated controlled modulation of neural growth pathways.
Conclusions:
- Functionalized SFS fibers significantly enhance neural guidance for tissue regeneration.
- These findings support the use of biofunctionalized SFS fibers as potential implants for spinal cord injury.
- This approach offers a promising strategy for reconnecting injured spinal cord tissues.
