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Related Experiment Video

Updated: Nov 30, 2025

Injectable Supramolecular Polymer-Nanoparticle Hydrogels for Cell and Drug Delivery Applications
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3D-printable zwitterionic nano-composite hydrogel system for biomedical applications.

Nathalie Sällström1, Andrew Capel2, Mark P Lewis2

  • 1Wolfson School of Mechanical Electrical & Manufacturing Engineering, Loughborough University, Loughborough, Leicestershire, UK.

Journal of Tissue Engineering
|November 16, 2020
PubMed
Summary

This study shows a new zwitterionic sulfobetaine hydrogel is not toxic to neural cells. The printable hydrogel supports cell growth and allows for tunable mechanical properties, indicating its potential for neural tissue engineering.

Keywords:
Nanocompositeprinting-then-curing approachsulfobetaine methacrylatezwitterionic hydrogel

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Area of Science:

  • Biomaterials Science
  • Tissue Engineering
  • Hydrogel Chemistry

Background:

  • Zwitterionic hydrogels offer biocompatibility.
  • Additive manufacturing enables complex scaffold fabrication.
  • Nano-clay crosslinkers can enhance hydrogel properties.

Purpose of the Study:

  • To investigate the cytotoxicity of a novel zwitterionic sulfobetaine hydrogel.
  • To explore the use of additive manufacturing for creating tunable hydrogel structures.
  • To assess the biocompatibility of the hydrogel for neural applications.

Main Methods:

  • Extrusion-based additive manufacturing was used to fabricate hydrogel structures.
  • Material composition (monomer to Laponite content) was optimized.
  • Cytotoxicity was evaluated using neural cell cultures under direct and indirect contact conditions.

Main Results:

  • The hydrogel system allowed for shape-controlled fabrication with tunable mechanical properties.
  • Printed structures exhibited self-supporting capabilities, enabling a print-then-cure approach.
  • No significant difference in neural cell viability was observed across control, indirect, and direct conditions.
  • Cells cultured on the hydrogel demonstrated growth and extended neurites.

Conclusions:

  • The developed zwitterionic sulfobetaine hydrogel is cytocompatible with neural cells.
  • Additive manufacturing provides a viable method for creating functional hydrogel scaffolds.
  • The material shows promise for applications in neural tissue engineering and regenerative medicine.