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Related Experiment Video

Updated: May 25, 2026

Easy Manipulation of Architectures in Protein-based Hydrogels for Cell Culture Applications
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Gelatin-based materials with inverse structures: Porous hydrogels compared to hydrogel particles.

Robin R Benedix1, Omar A Abdelaziz1, Alexander Southan2

  • 1Institute of Physical Chemistry, University of Stuttgart, Pfaffenwaldring 55, 70569, Stuttgart, Germany; Max Planck Institute for Intelligent Systems, Heisenbergstr. 3, 70569, Stuttgart, Germany.

International Journal of Biological Macromolecules
|May 23, 2026
PubMed
Summary

Researchers created gelatin methacryloyl (GelMA) hydrogels with inverse structures but similar network properties. This work lays the groundwork for new drug delivery systems using these tunable hydrogel materials.

Keywords:
Droplet templatingFoam templatingGelMAHydrogel particlesMicrofluidicsPorous hydrogelsX-ray microtomography

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Area of Science:

  • Biomaterials Science
  • Materials Engineering

Background:

  • Designing hydrogels with controlled macroscopic structures is crucial for applications like drug delivery.
  • Gelatin methacryloyl (GelMA) hydrogels offer tunable properties but require precise synthesis methods.

Purpose of the Study:

  • To synthesize two distinct GelMA hydrogel architectures—porous hydrogels and hydrogel particles—with inverse macroscopic structures but similar network characteristics.
  • To establish a foundation for understanding and utilizing these hydrogels in drug sorption and release applications.

Main Methods:

  • Utilized microfluidic-based liquid foam and droplet templating to generate hydrogel structures.
  • Developed specialized GelMA (GM10) formulations for low viscosity and high crosslinking efficiency.
  • Employed X-ray microtomography to analyze macroscopic structures and characterized network similarity via equilibrium degree of swelling (EDS) tests.
  • Conducted cytotoxicity assays to confirm material biocompatibility.

Main Results:

  • Successfully synthesized monodisperse porous hydrogels and hydrogel particles with inverse macroscopic structures, where node size equals particle diameter.
  • Achieved similar surface-to-volume ratios and hydrogel network structures (confirmed by EDS) between the two material types.
  • Demonstrated the cytocompatibility of both synthesized hydrogel materials.

Conclusions:

  • Established a method for creating GelMA hydrogels with tunable macroscopic structures and consistent network properties.
  • The findings provide a basis for future investigations into the drug sorption and release capabilities of these hydrogel materials.