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Strategies for Anisotropic Fibrillar Hydrogels: Design, Cell Alignment, and Applications in Tissue Engineering.

Anatolii Abalymov1, Bat-El Pinchasik2, Roman A Akasov3

  • 1Science Medical Center, Saratov State University, 410012 Saratov, Russia.

Biomacromolecules
|October 9, 2023
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Summary

This review explores methods for aligning polymer fibrils in hydrogels to improve cell alignment. These techniques are crucial for advancing biomaterials and tissue engineering applications.

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Area of Science:

  • Biomaterials Science
  • Tissue Engineering
  • Polymer Chemistry

Background:

  • Achieving efficient cellular alignment in biomaterials is a significant challenge.
  • Biomaterials research focuses on diverse coatings, hydrogels, and surfaces to enhance cell-surface interactions.
  • Hydrogel substrates with controlled topography are essential for cellular adhesion and organization.

Purpose of the Study:

  • To investigate how physicochemical parameters influence the architecture of fibrillar hydrogels for cell alignment.
  • To review techniques for aligning polymer fibrils within hydrogels during and after cross-linking.
  • To assess the potential of cell-aligning interfaces in biomaterials and tissue engineering.

Main Methods:

  • Mechanical strains
  • Temperature modulation
  • Fluidic dynamics
  • Chemical modulators
  • Magnetic fields
  • Electric fields

Main Results:

  • Physicochemical parameters significantly influence fibrillar hydrogel architecture.
  • Various techniques effectively align polymer fibrils within hydrogels.
  • These methods create topography that fosters cellular adhesion and spatial organization.

Conclusions:

  • The reviewed methodologies offer promising approaches for fabricating effective cell-aligning interfaces.
  • Optimizing cellular alignment in biomaterials is key for advancements in tissue engineering.
  • Fibrillar hydrogels provide a versatile platform for controlling cell behavior.