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Injectable Supramolecular Polymer-Nanoparticle Hydrogels for Cell and Drug Delivery Applications
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Self-assembled hydrogels utilizing polymer-nanoparticle interactions.

Eric A Appel1, Mark W Tibbitt1, Matthew J Webber1

  • 1Department of Chemical Engineering, David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Room 76-661, 500 Main Street, Cambridge, Massachusetts 02139, USA.

Nature Communications
|February 20, 2015
PubMed
Summary
This summary is machine-generated.

New self-assembled hydrogels utilize polymer-nanoparticle interactions for shear-thinning and self-healing. These mouldable materials enable versatile drug delivery with tunable release profiles for biomedical applications.

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Area of Science:

  • Materials Science
  • Biomedical Engineering
  • Polymer Chemistry

Background:

  • Mouldable hydrogels are essential for minimally invasive delivery and conformal applications.
  • Existing hydrogels often lack efficient shear-thinning and self-healing capabilities.

Purpose of the Study:

  • To develop a novel class of self-assembled hydrogels with shear-thinning and self-healing properties.
  • To engineer polymer-nanoparticle (NP) interactions for controlled hydrogel formation.
  • To explore the potential of these hydrogels for drug delivery applications.

Main Methods:

  • Fabrication of hydrogels via selective adsorption of biopolymer derivatives to nanoparticles.
  • Characterization of polymer-NP interactions to achieve shear-thinning and self-healing.
  • Design and testing of biocompatible hydrogels for entrapping and delivering hydrophilic and hydrophobic drugs.

Main Results:

  • Demonstrated successful fabrication of shear-thinning and self-healing hydrogels.
  • Established a physical model for polymer-NP gel formation.
  • Showcased differential drug release profiles (in vitro and in vivo) for both hydrophilic and hydrophobic drugs.
  • Confirmed the biocompatibility of the engineered hydrogels.

Conclusions:

  • Introduced a facile and generalizable method for creating mouldable hydrogels.
  • Highlighted the potential of polymer-NP interactions for advanced material design.
  • Established these hydrogels as promising candidates for diverse biomedical and industrial applications, particularly in drug delivery.