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Related Experiment Video

Updated: Sep 23, 2025

Interlinked Macroporous 3D Scaffolds from Microgel Rods
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Dissolvable microgel-templated macroporous hydrogels for controlled cell assembly.

Zhongliang Jiang1, Fang-Yi Lin1, Kun Jiang1

  • 1Department of Biomedical Engineering, Indiana University-Purdue University Indianapolis, Indianapolis, IN 46202, USA.

Biomaterials Advances
|May 17, 2022
PubMed
Summary
This summary is machine-generated.

This study presents a novel method for creating macroporous hydrogel scaffolds using dissolvable microgels. These scaffolds support mesenchymal stem cell (MSC) spheroids, enhancing their therapeutic potential for tissue regeneration and immune modulation.

Keywords:
Cell-laden microgelsDroplet-microfluidicsMacroporous hydrogelMesenchymal stem cells

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Area of Science:

  • Biomaterials Science
  • Regenerative Medicine
  • Cell Biology

Background:

  • Mesenchymal stem cells (MSCs) are crucial for tissue repair and immune modulation.
  • Enhancing MSC therapeutic efficacy involves forming multicellular spheroids.
  • Macroporous hydrogels improve nutrient and waste transport in cell-laden matrices.

Purpose of the Study:

  • To develop a novel method for fabricating MSC-laden macroporous hydrogel scaffolds.
  • To investigate the formation of solid and hollow MSC spheroids within these scaffolds.
  • To assess the therapeutic potential of MSC spheroids in macroporous hydrogels.

Main Methods:

  • Fabrication of rapidly dissolvable, cell-laden microgels using microfluidics and thiol-norbornene photopolymerization with PEGNB-Dopa.
  • Encapsulation of microgels within a bulk hydrogel matrix, creating macropores upon microgel degradation.
  • Tuning bulk hydrogel properties to control spheroid formation (solid vs. hollow).

Main Results:

  • Demonstrated cytocompatibility of the in situ pore-forming approach with various cell types.
  • Successfully formed solid and hollow MSC spheroids by adjusting hydrogel stiffness and adhesiveness.
  • MSC solid spheroids within macroporous hydrogels showed significant secretion of key growth factors and cytokines (HGF, VEGF-A, IL-6, IL-8, TIMP-2).

Conclusions:

  • A novel platform for creating cell-laden macroporous hydrogels was successfully developed.
  • The platform enables controlled formation of MSC spheroids, influencing cellular pathways (e.g., AKT activation).
  • This innovative approach holds promise for diverse future biomedical applications in regenerative medicine.