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Dimeric copper peptide incorporated hydrogel for promoting diabetic wound healing

Study · human · Nature communications · 2025 · DOI 10.1038/s41467-025-61141-1 · PMID 40592840

Plain-language summary

Paraphrased from the published abstract below — not a verdict on whether anything works.

This study (species not specified) describes a dimeric copper peptide (D-CuP) incorporated into a reactive-oxygen-species-responsive hydrogel matrix (G/D-CuP), proposed as a proof-of-concept treatment for diabetic wounds. Compared to monomer copper peptide (M-CuP), D-CuP is described as showing multivalency, greater biological stability against proteases, and broad biological activities. The hydrogel matrix was engineered for wound-responsive release of D-CuP at the wound site while reducing inflammatory responses. The abstract reports that the G/D-CuP group achieved 97.2% closure of infected wounds.

Abstract

Diabetic wounds require continuous and coordinated modulation of the microenvironment concurrent with tissue regeneration, which remains a significant challenge. As a proof of concept, we herein propose to use dimeric copper peptide (D-CuP) for diabetic wound treatment. The D-CuP is synthesized and then incorporated into a reactive oxygen species (ROS)-responsive hydrogel matrix to improve therapeutic compliance, culminating in the formulation of G/D-CuP. Compared to monomer copper peptide (M-CuP), a wound healing agent, D-CuP exhibits multivalency, enhanced biological stability against proteases, and broad biological activities. Meanwhile, the hydrogel matrix, exhibiting ROS-scavenging capabilities, has been engineered to be an intelligent drug reservoir for wound-responsive release of D-CuP at the wound site while simultaneously attenuating inflammatory responses. Ultimately, the G/D-CuP group demonstrates superior therapeutic efficacy, achieving 97.2% closure of infected wounds.

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