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Peptide/Drug Directed Self-Assembly of Hybrid Polyurethane Hydrogels for Wound Healing.

08:00 EDT 12th September 2019 | BioPortfolio

Summary of "Peptide/Drug Directed Self-Assembly of Hybrid Polyurethane Hydrogels for Wound Healing."

Drug loading hydrogels are promising candidates in bioengineering research filed, nevertheless, hydrophobic drug loading into hydrophilic carrier system remains unsolved and is full of challenge. In this work, following the potential dual interactions between peptides and aromatic drugs, we developed a potent hybrid hydrogel formation method, namely 'peptide/drug directed self-assembly'. The hybrid hydrogels were synthesized using polyethylene glycol (PEG) based Fmoc-FF peptide hybrid polyurethane, in which curcumin could be encapsulated through self-assembly with Fmoc-FF peptide via π-π stacking. Based on this, curcumin loading capacity could be improved to as high as 3.3 wt% with sustained release. In addition, the curcumin loading enhanced hydrogel mechanical properties from 4 kPa to over 10 kPa, similar to that of natural soft tissues. Furthermore, the hydrogels were injectable with self-healing properties since the Fmoc-FF peptide/curcumin co-assembly was non-covalent and reversible. Spectroscopy results confirmed the existence of the co-assembly of Fmoc-FF peptide/curcumin. Further in vivo experiments effectively demonstrated that the hydrogels could improve the cutaneous wound healing in a full-thickness skin defected model. This peptide/drug directed self-assembly of hybrid polyurethane hydrogel could be used as a promising platform for tissue-engineering scaffold and biomedical application.

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This article was published in the following journal.

Name: ACS applied materials & interfaces
ISSN: 1944-8252
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Medical and Biotech [MESH] Definitions

Screening techniques first developed in yeast to identify genes encoding interacting proteins. Variations are used to evaluate interplay between proteins and other molecules. Two-hybrid techniques refer to analysis for protein-protein interactions, one-hybrid for DNA-protein interactions, three-hybrid interactions for RNA-protein interactions or ligand-based interactions. Reverse n-hybrid techniques refer to analysis for mutations or other small molecules that dissociate known interactions.

A process of GENETIC TRANSLATION whereby the formation of a peptide chain is started. It includes assembly of the RIBOSOME components, the MESSENGER RNA coding for the polypeptide to be made, INITIATOR TRNA, and PEPTIDE INITIATION FACTORS; and placement of the first amino acid in the peptide chain. The details and components of this process are unique for prokaryotic protein biosynthesis and eukaryotic protein biosynthesis.

Inhibitor or Reverse Transcriptases or of RNA-dIrected DNA polymerase.

The production of PEPTIDES or PROTEINS by the constituents of a living organism. The biosynthesis of proteins on RIBOSOMES following an RNA template is termed translation (TRANSLATION, GENETIC). There are other, non-ribosomal peptide biosynthesis (PEPTIDE BIOSYNTHESIS, NUCLEIC ACID-INDEPENDENT) mechanisms carried out by PEPTIDE SYNTHASES and PEPTIDYLTRANSFERASES. Further modifications of peptide chains yield functional peptide and protein molecules.

Skin irritant and allergen used in the manufacture of polyurethane foams and other elastomers.

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