Viscoelasticity of hydrazone crosslinked poly(ethylene glycol) hydrogels directs chondrocyte morphology during mechanical deformation

Biomater Sci. 2020 Jul 21;8(14):3804-3811. doi: 10.1039/d0bm00860e. Epub 2020 Jun 30.

Abstract

Chondrocyte deformation influences disease progression and tissue regeneration in load-bearing joints. In this work, we found that viscoelasticity of dynamic covalent crosslinks temporally modulates the biophysical transmission of physiologically relevant compressive strains to encapsulated chondrocytes. Chondrocytes in viscoelastic alky-hydrazone hydrogels demonstrated (91.4 ± 4.5%) recovery of native rounded morphologies during mechanical deformation, whereas primarily elastic benzyl-hydrazone hydrogels significantly limited morphological recovery (21.2 ± 1.4%).

MeSH terms

  • Cells, Cultured
  • Chondrocytes*
  • Hydrazones*
  • Hydrogels
  • Polyethylene Glycols
  • Stress, Mechanical
  • Tissue Engineering

Substances

  • Hydrazones
  • Hydrogels
  • Polyethylene Glycols