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Interpenetrating polymer network hydrogels as bioactive scaffolds for tissue engineering.

Cody O Crosby1, Brett Stern1, Nikhith Kalkunte1

  • 1University of Texas at Austin, Department of Biomedical Engineering, Austin, Texas.

Reviews in Chemical Engineering
|April 11, 2022
PubMed
Summary

Interpenetrating polymer network hydrogels offer a promising solution for tissue engineering scaffolds. These advanced biomaterials mimic the extracellular matrix, enhancing cell adhesion and mechanical strength for improved clinical translation.

Keywords:
extracellular matrixhydrogelinterpenetrating polymer networkscaffoldtissue engineering

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Area of Science:

  • Biomaterials Science
  • Tissue Engineering
  • Polymer Chemistry

Background:

  • Tissue engineering has faced challenges in clinical translation due to a lack of suitable biomaterial scaffolds.
  • Existing scaffolds often lack the necessary mechanical properties, bioactivity, and cytocompatibility of native human tissues.

Purpose of the Study:

  • To propose interpenetrating polymer network (IPN) hydrogels as advanced biomaterial scaffolds for tissue engineering.
  • To highlight recent advances and applications of IPN hydrogels in creating functional tissue constructs.

Main Methods:

  • Synthesizing IPN hydrogels using combinations of biologically-derived and synthetic polymers.
  • Reviewing critical advances in IPN hydrogel properties: mechanical strength, stiffness, conductivity, and degradation.
  • Examining the integration of IPN hydrogels into organ-on-a-chip and bioprinting technologies.

Main Results:

  • IPN hydrogels provide a 3D microenvironment mimicking the extracellular matrix, promoting cell adhesion and viability.
  • Combinations of natural and synthetic polymers allow for tunable properties, balancing bioactivity with mechanical integrity.
  • Recent advancements have significantly improved mechanical strength, stiffness, conductivity, and degradation control in IPN hydrogels.

Conclusions:

  • IPN hydrogels represent a significant advancement in biomaterial design for tissue engineering.
  • Their tunable properties and bioactivity make them ideal for creating functional tissue replacements.
  • IPN hydrogels are poised to be critical in developing advanced tissue engineering applications like organ-on-a-chip and bioprinting for regenerative medicine.