Gelatin-tyramine addition and low hydrogel density improves cell attachment, migration, and metabolic activity in vitro and tissue response in vivo in enzymatically crosslinkable dextran-hyaluronic acid hydrogels

Jan Hendriks, Bram Zoetebier, Carolina Serrano Larrea, Nguyen Xuan Thanh Le, Daniël B.F. Saris, Marcel Karperien*

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

Hydrogels are receiving increasing attention for their use in 3D cell culture, tissue engineering, and bioprinting applications. Each application places specific mechanical and biological demands on these hydrogels. We developed a hydrogel toolbox based on enzymatically crosslinkable polysaccharides via tyramine (TA) moieties, allowing for rapid and tunable crosslinking with well-defined stiffness and high cell viability. Including gelatin modified with TA moieties (Gel-TA) improved the hydrogels' biological properties; 3 T3 fibroblasts and HUVECs attached to and proliferated on the enriched hydrogels at minute Gel-TA concentrations, in contrast to bare or unmodified gelatin-enriched hydrogels. Moreover, we were able to switch HUVECs from a quiescent to a migratory phenotype simply by altering the ligand concentration, demonstrating the potential to easily control cell fate. In encapsulation studies, Gel-TA significantly improved the metabolic activity of 3 T3 fibroblasts in soft hydrogels. Furthermore, we showed rapid migration and network formation in Gel-TA enriched hydrogels in contrast to a non-migratory behavior in non-enriched polysaccharide hydrogels. Finally, low hydrogel density significantly improves tissue response in vivo with large infiltration and low fibrotic reaction. Further development by adding ECM proteins, peptides, and growth factor adhesion sites will lead to a toolbox for hydrogels tailored toward their desired application.

Original languageEnglish
Article number128843
Number of pages11
JournalInternational journal of biological macromolecules
Volume259
Early online date16 Dec 2023
DOIs
Publication statusPublished - Feb 2024

Keywords

  • And metabolic activity
  • Cell attachment
  • Co-crosslinking
  • Enzymatic crosslinkable dextran/hyaluronic acid hydrogels
  • Gelatin
  • In vivo tissue response
  • Migration
  • 2024 OA procedure

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