A1 Refereed original research article in a scientific journal
Breathable core-shell microneedle patches for diabetic wound treatment
Authors: Fan, Lu; Wang, Yu; Wang, Li; Lin, Xiang; Wang, Xiaoju; Shang, Luoran; Zhang, Hongbo; Zhao, Yuanjin
Publisher: IOP Publishing Ltd
Publishing place: BRISTOL
Publication year: 2025
Journal: Materials futures
Journal name in source: MATERIALS FUTURES
Journal acronym: MATER FUTURES
Article number: 025402
Volume: 4
Issue: 2
Number of pages: 10
eISSN: 2752-5724
DOI: https://doi.org/10.1088/2752-5724/adcbc6
Web address : https://iopscience.iop.org/article/10.1088/2752-5724/adcbc6
Self-archived copy’s web address: https://research.utu.fi/converis/portal/detail/Publication/492274034
Microneedles have demonstrated valuable applications in diabetic wound management. Many endeavors are devoted to developing microneedles with well-designed structures and enhanced functions. Herein, we present an elaborate microneedle patch with breathability for wound healing by a multi-step replication method. The microneedle patch consists of a breathable porous supporting substrate and core-shell tips involving poly (vinyl alcohol) shells loaded with antimicrobial peptides (PVA@AMPs shell) and crosslinked Gelma cores encapsulated with exosomes (Gelma@exo core). The PVA was crosslinked with a ROS-responsive linker, which results in degradation of the microneedle shell in the inflammatory microenvironment, thus inducing the release of loaded AMPs to inhibit bacteria. Further, the exosomes continuously release from the exposed Gelma@exo core, promoting tissue regeneration and regulating the immune response. Besides, the high porosity of the supporting substrate makes the microneedle patches more suitable for chronic wounds. Based on these features, it was demonstrated that the microneedle patch exhibits desirable performance in in vivo animal tests. Thus, we believe that the proposed microneedle patches have remarkable potential in wound healing and related fields.
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Funding information in the publication:
This work is funded by Research Project (347897), Solution for Health Profile (336355), InFLAMES Flagship (337531) Grants and Printed Intelligence Infrastructure (PII-FIRI) from Research Council of Finland. This study is part of the activities of the Åbo Akademi University Foundation (SÅA) funded Center of Excellence in Research "Materials-driven solutions for combating antimicrobial resistance (MADNESS).