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Related Experiment Video

Updated: May 5, 2026

Cellular Encapsulation in 3D Hydrogels for Tissue Engineering
09:37

Cellular Encapsulation in 3D Hydrogels for Tissue Engineering

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Redox-triggered self-rolling robust hydrogel tubes for cell encapsulation.

Lu Liu1, Ning Wang, Yanjiao Han

  • 1Tianjin Key Laboratory of Composite and Functional Materials, School of Materials Science and Engineering, Tianjin University, Tianjin, 300072, P. R. China.

Macromolecular Rapid Communications
|December 11, 2013
PubMed
Summary
This summary is machine-generated.

Mechanically strong hydrogels form 3D tubes when exposed to reductants. This self-rolling 3D tubular scaffold supports cell viability, offering potential for tissue engineering applications.

Keywords:
cell encapsulationhydrogelredoxself-rolling

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Area of Science:

  • Materials Science
  • Biomedical Engineering
  • Polymer Chemistry

Background:

  • Development of advanced hydrogel materials is crucial for tissue engineering.
  • Controlling hydrogel architecture and mechanical properties is key for creating functional scaffolds.
  • Redox-responsive materials offer dynamic control over scaffold structure.

Purpose of the Study:

  • To synthesize mechanically strong hydrogels with tunable properties.
  • To investigate the self-rolling behavior of bilayer hydrogels in response to reductants.
  • To evaluate the potential of these 3D tubular scaffolds for cell encapsulation and viability.

Main Methods:

  • Photopolymerization of 2-vinyl-4,6-diamino-1,3,5-triazine, poly(ethylene glycol) methacrylate, and N'N-bis(acryloyl)cystamine.
  • Fabrication of bilayer hydrogels with differential cross-linking densities.
  • Exposure to reductants (1,4-dithio-DL-threitol or L-glutathione) to induce disulfide bond cleavage and observe structural changes.
  • Cell seeding (L929 cells) and assessment of viability within the 3D tubular scaffolds.

Main Results:

  • Mechanically strong hydrogels were successfully synthesized.
  • Bilayer hydrogels exhibited self-rolling into 3D tubes upon exposure to reductants due to redox-induced cleavage of disulfide bonds and resulting stress imbalance.
  • Cell-seeded hydrogels formed viable 3D tubular scaffolds at intracellular glutathione levels.

Conclusions:

  • The developed hydrogel system demonstrates controlled self-assembly into 3D tubular structures.
  • The 3D tubular scaffolds maintain cell viability, indicating suitability for biomedical applications.
  • This redox-responsive hydrogel platform shows promise for creating complex tissue engineering constructs.