Wound infection by multidrug-resistant bacteria seriously threatens human life. Chronic wounds, with necrosis, persistent inflammation, and covered by hypoxic tissue, seriously hinder anti-infection treatments. Herein, we have developed a multifunctional hydrogel dressing with antibacterial activity in the hypoxia environment to promote wound healing. The hydrogel comprises Cypate-conjugated antimicrobial peptides (AMP-Cypates), liposome-encapsulated perfluorodecalin, and recombinant type III collagen. AMP-Cypates exhibited outstanding antibacterial activity, jointly achieved through antimicrobial peptide (AMP) activity, photothermal therapy (PTT), and photodynamic therapy (PDT). The perfluorodecalin liposomes act as the oxygen carrier to mitigate wound hypoxia condition and enhance the efficacy of PDT. The recombinant type III collagen in the hydrogel further promoted the healing of the wounds together with the eradication of bacterial infection. Taken together, the hydrogel dressing provides a platform for integrating multiple antimicrobial mechanisms for the rapid removal of bacterial infection and the healing of chronic wounds.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.ijbiomac.2023.123413 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Polyvinyl alcohol/chitosan hydrogel based on deep eutectic solvent for promoting methicillin-resistant Staphylococcus aureus-infected wound healing.
Int J Biol Macromol
January 2025
School of Veterinary Medicine, Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou University, Yangzhou 225009, PR China; Joint International Research Laboratory of Agriculture and Agri-Product Safety, the Ministry of Education of China, Yangzhou University, Yangzhou, Jiangsu 225009, PR China. Electronic address:
Bacterial-infected wounds usually lead to slow wound healing due to increased inflammation, especially wounds infected by drug-resistant bacteria, which is a serious challenge in the biomedical field. Traditional antimicrobial strategies such as antibiotics lead to a significant increase in drug-resistant strains and have limited efficacy. Therefore, there is an urgent need to develop multifunctional dressings with excellent antibacterial activity and promotion of wound healing.
View Article and Find Full Text PDFIntelligent response agarose/chitosan hydrogel wound dressing: Synergistic chemotherapy, PDT and PTT effects against bacterial infection.
Int J Biol Macromol
January 2025
College of Pharmacy, Guangxi University of Chinese Medicine, Nanning, China. Electronic address:
Bacterial infections impede skin wound healing, and antibacterial hydrogels have garnered significant attention in the field of wound care due to their combined therapeutic effects. In this study, an intelligent, responsive AC-Gel@Cur-Au hydrogel was developed using temperature-sensitive agarose and pH-responsive chitosan as the structural framework, infused with Gel@Cur and AuNR. The AC-Gel@Cur-Au hydrogels demonstrated excellent mechanical properties, swelling capacity, tissue adhesion, and biodegradability.
View Article and Find Full Text PDFCell-type dependent effect of 3D collagen matrix on cancer cell resistance to suboptimal conditions: the case of serum deprivation, glucose starvation, and hypoxia.
Tissue Cell
January 2025
Institute of Biology and Biomedicine, Lobachevsky State University of Nizhny Novgorod, Nizhny Novgorod, Russia. Electronic address:
The extracellular matrix (ECM) and its primary chemical components, including collagen, play a pivotal role in carcinogenesis and tumor progression. The ECM actively regulates cell proliferation, migration, and, importantly, resistance to various adverse factors. It is widely recognized as a key factor in modifying the resistance of tumor cells to various treatment modalities and cytotoxic compounds.
View Article and Find Full Text PDFAnchoring of Probiotic-Membrane Vesicles in Hydrogels Facilitates Wound Vascularization.
ACS Nano
January 2025
National Engineering Research Center for Biomaterials, Sichuan University, 29 Wangjiang Road, Chengdu, Sichuan 610064, P. R. China.
Inadequate vascularization significantly hampers wound recovery by limiting nutrient delivery. To address this challenge, we extracted membrane vesicles from (LMVs) and identified their angiogenic potential via transcriptomic analysis. We further developed a composite hydrogel system (Gel-LMVs) by anchoring LMVs within carboxylated chitosan and cross-linking it with oxidized hyaluronic acid through a Schiff base reaction.
View Article and Find Full Text PDFThe efficacy of platelet-derived extracellular vesicles in the treatment of diabetic wounds: a systematic review and meta-analysis of animal studies.
Arch Dermatol Res
January 2025
Department of Transfusion, The Affiliated Hospital of Southwest Medical University, Sichuan, 646000, Luzhou, People's Republic of China.
Platelet-derived extracellular vesicles (PEVs) are rich in growth factors and have significant potential for facilitating tissue repair and regeneration. Therefore, we conducted this meta-analysis to assess the efficacy of PEVs in treating diabetic wounds. To assess the efficacy and safety of PEVs in treating diabetic wounds, we conducted a systematic review of several databases and performed a meta-analysis using a random effects model.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!