Advanced Functional Hydrogels for Chronic Wound Healing and Skin Regeneration

A special issue of Gels (ISSN 2310-2861). This special issue belongs to the section "Gel Applications".

Deadline for manuscript submissions: 31 December 2026 | Viewed by 2322

Special Issue Editor


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Guest Editor
Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou 325000, China
Interests: hydrogels; tissue regeneration; bioinks; 3D printing; drug screening
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Special Issue Information

Dear Colleagues,

Chronic wounds, such as diabetic foot ulcers, venous leg ulcers, and pressure sores, represent a significant and growing clinical challenge worldwide. Their complex pathophysiology—characterized by persistent inflammation, bacterial infection, impaired angiogenesis, and a failure to re-epithelialize—renders conventional treatments often inadequate. In this context, advanced hydrogels have emerged as a cornerstone of next-generation wound care strategies. Their unique properties, including their high water content, tunable physical structure, and biocompatibility, provide an ideal, moist, wound-healing environment.

This Special Issue, "Advanced Functional Hydrogels for Chronic Wound Healing and Skin Regeneration," aims to showcase the latest breakthroughs in the design, fabrication, and application of smart hydrogel platforms. We seek to highlight research that moves beyond passive dressings to active, therapeutic systems. Topics of interest include, but are not limited to, the following:

  • Smart and Stimuli-Responsive Hydrogels: Systems that respond to wound microenvironment cues (e.g., pH, enzyme, glucose, temperature) for on-demand drug release;
  • Bioactive Hydrogels: The incorporation of growth factors, antimicrobial peptides, antioxidants, or exosomes to promote angiogenesis, combat infection, and modulate inflammation;
  • Engineered Biomimetic Hydrogels: Scaffolds that replicate the biochemical and mechanical properties of the native extracellular matrix to guide cell proliferation and migration;
  • 3D-Bioprinted and Structured Hydrogels: The fabrication of sophisticated wound dressings or skin constructs using 3D printing and other advanced manufacturing techniques;
  • Self-Healing and Injectable Hydrogels: Minimally invasive formulations that can fill irregular wound cavities and maintain integrity under dynamic conditions;
  • Antimicrobial and Anti-biofilm Strategies: Hydrogels integrated with novel antimicrobial agents, nanoparticles, or physical mechanisms to address multidrug-resistant bacteria and biofilms;
  • In Vitro Wound Models: The development of hydrogel-based platforms for studying chronic wound mechanisms and screening new therapeutics.

We invite the submission of original research articles, comprehensive reviews, and short communications that contribute to advancing this critical field and improving patient outcomes.

Prof. Dr. Bae Hoon Lee
Guest Editor

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Keywords

  • hydrogels
  • chronic wound healing
  • skin regeneration
  • drug delivery
  • antimicrobial
  • 3D bioprinting
  • bioactive scaffolds
  • diabetic foot ulcer

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Published Papers (2 papers)

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Research

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23 pages, 6102 KB  
Article
Multifunctional Carboxymethyl Chitosan/Sodium Alginate/Fucoidan Hydrogel as a Dressing for Hemostasis and Skin Wound Healing
by Xinyue Gai, Yinghao Bi, Wen Zhao, Changlong Ren, Ming Chang, Miansong Zhang, Tingting Cui, Xue Liu and Airong Jia
Gels 2025, 11(12), 950; https://doi.org/10.3390/gels11120950 - 26 Nov 2025
Cited by 1 | Viewed by 1142
Abstract
Wound healing is a complicated process that involves hemostasis, antibacterial defense, and tissue regeneration. Conventional treatment methods, such as surgical suturing, have inherent limitations, necessitating the exploration of new ones. Hydrogels can create a moist environment that facilitates wound healing, making them an [...] Read more.
Wound healing is a complicated process that involves hemostasis, antibacterial defense, and tissue regeneration. Conventional treatment methods, such as surgical suturing, have inherent limitations, necessitating the exploration of new ones. Hydrogels can create a moist environment that facilitates wound healing, making them an ideal material for wound healing. In this study, a procoagulant polysaccharide mixture (carboxymethyl chitosan/sodium alginate/fucoidan; CAF) was designed. Hydrogels were prepared using CAF and an oxidized starch/tannic acid blend (OT) at different ratios. Through comprehensive evaluations, such as gelation time, swelling capacity, and antibacterial efficacy, an optimal hydrogel (COT) was identified. This COT hydrogel was formed by mixing 3% CAF and OT solutions at a ratio of 2:1 (v/v). The associated gelation process occurred rapidly within 13 s. COT hydrogel exhibited self-healing properties, and a high swelling rate (~3109 ± 74%). It also demonstrated high antibacterial activity, facilitating enhanced protection against infection. Additionally, COT hydrogel exhibited biocompatibility and biosafety. COT hydrogel demonstrated low cytotoxicity on mice fibroblast cells (L929) and good hemocompatibility in vitro. Moreover, in vivo evaluations revealed that it did not cause skin irritation or allergic reactions. Importantly, COT hydrogel significantly outperformed the commercially available hydrogel with its hemostatic and wound healing performance (p < 0.001, p < 0.01). Full article
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Review

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31 pages, 3162 KB  
Review
Preparation Strategy of Hydrogel Loaded with Natural Products and Its Research Progress in Skin Repair
by Lingchen Zhang, Qifan Li, Yuhan Zhou, Junran Yang, Xiaohang Sun, Xiaoyu Bi, Qiteng Ding, Xinglong Liu and Bo Yang
Gels 2026, 12(1), 62; https://doi.org/10.3390/gels12010062 - 9 Jan 2026
Viewed by 849
Abstract
Hydrogels are three-dimensional hydrophilic network structures with one or more polymers cross-linked, with excellent biocompatibility, drug-carrying function, and biodegradability. Meanwhile, skin wound repair includes hemostasis and coagulation, an inflammation stage, a proliferation stage, and a remodeling stage. Therefore, hydrogels loaded with natural products [...] Read more.
Hydrogels are three-dimensional hydrophilic network structures with one or more polymers cross-linked, with excellent biocompatibility, drug-carrying function, and biodegradability. Meanwhile, skin wound repair includes hemostasis and coagulation, an inflammation stage, a proliferation stage, and a remodeling stage. Therefore, hydrogels loaded with natural products are widely used in repairing skin wounds through various mechanisms such as hemostasis, antibacterial activity, anti-inflammatory activity, angiogenesis promotion, skin regeneration, and skin repair monitoring. In addition, this study provides the cross-linking mechanism (physical cross-linking and chemical cross-linking) and construction mode (self-assembly and physical parcels) of the loaded natural product hydrogel. In general, the purpose of this paper is to comprehensively understand the mechanism and preparation strategy of hydrogels loaded with natural products for skin repair and provide theoretical reference for future skin repair research. Full article
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