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Coassembly Generates Peptide Hydrogel with Wound Dressing Material Properties.

Chaitanya Kumar Thota1, Allison A Berger1, Laura Elomaa1

  • 1Department of Chemistry and Biochemistry, Freie Universität Berlin, Takustrasse 3, 14195 Berlin, Germany.

ACS Omega
|April 28, 2020
PubMed
Summary

Researchers created an injectable peptide hydrogel for wound healing. This material, formed by coassembling peptides, shows promise for treating chronic wounds like diabetic foot ulcers.

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Area of Science:

  • Biomaterials Science
  • Nanobiotechnology
  • Regenerative Medicine

Background:

  • Multicomponent peptide self-assembly offers a route to functional nanomaterials with synergistic properties.
  • Peptide hydrogels are promising for nanobiotechnological applications due to their biocompatibility and tunable structures.

Purpose of the Study:

  • To develop an injectable ultrashort bioactive peptide hydrogel using a coassembly strategy.
  • To investigate the hydrogelation, biocompatibility, and drug release properties of the coassembled peptide system.

Main Methods:

  • Coassembly of a dipeptide hydrogelator with a macrophage-attracting peptide ligand.
  • Characterization using cryo-transmission electron microscopy (cryo-TEM), scanning electron microscopy, and rheology.
  • Assessment of biocompatibility via cytotoxicity assays and confocal microscopy; drug release studies.

Main Results:

  • Coassembly successfully formed an injectable peptide hydrogel without impeding hydrogelation.
  • Cryo-TEM, SEM, and rheology confirmed the hydrogel structure and properties.
  • Cytotoxicity assays and confocal microscopy demonstrated good biocompatibility.
  • The hydrogel exhibited sustained release of entrapped antibiotics, such as ciprofloxacin.

Conclusions:

  • The developed injectable peptide hydrogel is a promising advanced functional material.
  • This bioinspired material has potential applications in wound dressing for chronic conditions like diabetic foot ulcers.