Multifunctional CeO2/PCL Nanofibrous Scaffold with Integrated pH Sensing and Enhanced Stem Cell Adhesion.

Resveratrol-Engineered Modified Chitosan-PVP-AgNP Composite Hydrogel Patch: A Potential Antibacterial and Antioxidant Biomaterial for Infected Wound Healing.

A multifunctional hydrogel patch developed by chemically modifying chitosan with N-acetylsulfonyl chloride and forming a cross-linked network with polyvinylpyrrolidone (PVP) represents a promising multifunctional dressing for the effective management of infected wounds.

Sustained Release and Therapeutic Evaluation of Simvastatin‐Loaded Bioglass–Chitosan Gel Formulation for Skin Regeneration and Wound Healing Potential

Findings suggest that the synthesized hydrogel (BSG‐CHI) provides a favorable microenvironment for tissue regeneration and wound management applications.

IL-4-loaded nanofiber membrane promotes bone regeneration via modulating the immune microenvironment

Developing multifunctional scaffolds that combine tailored physical properties with bioactivity is essential for advanced bone tissue engineering. This study fabricated an interleukin-4 (IL-4)-loaded polycaprolactone/gelatin (PCL-Gel) nanofiber membrane via electrospinning. Incorporating Gel significantly refined fiber diameter (978 ± 324 nm, 883 ± 234 nm for PCL), increased surface roughness, and improved hydrophilicity, reducing the water contact angle from 161.3° to 43.3°. IL-4 was successfully encapsulated without altering fiber morphology. The composite membrane exhibited a sustained release profile with a low initial burst (20%–30%) and high cumulative release (>85% over 30 d). In vitro, the PCL/Gel/IL-4 scaffold markedly promoted the osteogenesis of bone marrow mesenchymal stem cells, which was demonstrated by increased alkaline phosphatase activity and enhanced deposition of mineralized nodules. Moreover, it induced a shift in macrophage polarization to the M2 phenotype, accompanied by elevated expression of the anti-inflammatory mediators Arg-1 and IL-10 and downregulating pro-inflammatory genes. These results demonstrate that the PCL/Gel/IL-4 membrane synergistically improves physical properties, release behavior, osteogenic capacity, and immunomodulation, offering a promising multi-functional platform for bone regeneration.

Cu–CeO2 NP-loaded HAMA hydrogel patches for promoting high-quality cutaneous wound healing

Background Wound healing is a common issue in dermatology and plastic surgery practice and is jointly regulated by multiple factors, including cell proliferation, inflammatory responses, oxidative stress, bacterial infection, and tissue remodeling. Complex wounds still face challenges such as delayed repair, persistent inflammation, increased infection risk, and scar formation, while conventional treatments are difficult to achieve coordinated intervention across multiple stages. Therefore, developing biomaterials with pro-repair, anti-inflammatory, antibacterial, and healing quality-improving functions is of great significance. Objective This study aimed to construct a Cu–CeO2 nanoparticle (NP)-loaded hyaluronic acid methacrylate composite hydrogel patch, named Cu–CeO2-loaded HAMA (CCH), to improve the wound repair microenvironment and promote high-quality wound healing through multifunctional synergistic effects. Methods Cu–CeO2 NPs were synthesized using a hydrothermal method and loaded into HAMA hydrogel to prepare CCH hydrogel patches. In vitro experiments were performed to evaluate their biocompatibility, cell proliferation- and migration-promoting abilities, antioxidative/anti-inflammatory properties, nanozyme activity, and antibacterial effects. Meanwhile, a mouse full-thickness skin wound model was established to further verify the in vivo wound healing-promoting efficacy of CCH hydrogel patches. Results Cu–CeO2 NPs and CCH hydrogel patches were successfully prepared. In vitro results showed that Cu–CeO2 NPs exhibited favorable biocompatibility, promoted fibroblast proliferation and migration, enhanced endothelial cell viability, and facilitated macrophage polarization toward the M2 phenotype. In addition, these NPs exhibited reactive oxygen species (ROS)-scavenging capacity and hydrogen peroxide (H2O2) decomposition-mediated oxygen generation ability, and markedly inhibited methicillin-resistant Staphylococcus aureus (MRSA) and Escherichia coli (E. coli). In vivo results further demonstrated that CCH hydrogel patches accelerated wound closure, improved healing quality, and attenuated scar-like changes in mice. Conclusion This study developed Cu–CeO2 NP-loaded CCH hydrogel patches that can synergistically regulate the wound microenvironment through multiple effects, including pro-repair, antioxidative/anti-inflammatory, antibacterial, and tissue remodeling-improving activities, providing a promising biomaterial strategy for high-quality repair of complex skin wounds.

Design and biological evaluation of antimicrobial PVA/AgNP/zeolite electrospun nanofiber wound dressings

Electroresponsive PVA/Cu-BTC@Aloe hydrogel dressing for enhanced antibacterial activity and directional cell migration