Wound infections are a compelling health issue caused by the invasion and proliferation of pathogens in wound sites.Antibioticloaded hydrogels are widely used to achieve anti-infectious wound healing.However,due to th...Wound infections are a compelling health issue caused by the invasion and proliferation of pathogens in wound sites.Antibioticloaded hydrogels are widely used to achieve anti-infectious wound healing.However,due to the quick emergence of drugresistant bacteria,such as methicillin-resistant Staphylococcus aureus(MRSA),wound infection has been a formidable challenge to human health.To address MRSA-infected wounds,an antibacterial peptide polymer-loaded hyaluronic acid(HA)hydrogel(Gel-HA@P)is prepared.The peptide polymer is designed to mimic host defense peptides as the antibiotic alternative showing potent antibacterial activity,low susceptibility to drug resistance and good stability against proteolysis.HA is biocompatible and biodegradable hydrogel substrate as a primary constituent of the extracellular matrix and suitable for cell migration and wound healing.Gel-HA@P shows potent activity against MRSA in vitro and in vivo,low toxicity during the treatment and promotes the wound healing in vivo.This design has proven to be an effective and antibiotic-free strategy to enable the healing of MRSA-infected wounds.展开更多
基金supported by the National Natural Science Foundation of China(22075078,52203162)the Program of Shanghai Academic/Technology Research Leader(20XD1421400)+4 种基金Shanghai Sailing Program(21YF1409100)China National Postdoctoral Program for Innovative Talents(BX20220108)the China Postdoctoral Science Foundation(2021M701198)the Open Research Fund of State Key Laboratory of Polymer Physics and Chemistry(Changchun Institute of Applied Chemistry,Chinese Academy of Sciences)the Frontier Science Research Base of Optogenetic Techniques for Cell Metabolism(2021Sci&Tech 03-28,Shanghai Municipal Education Commission)。
文摘Wound infections are a compelling health issue caused by the invasion and proliferation of pathogens in wound sites.Antibioticloaded hydrogels are widely used to achieve anti-infectious wound healing.However,due to the quick emergence of drugresistant bacteria,such as methicillin-resistant Staphylococcus aureus(MRSA),wound infection has been a formidable challenge to human health.To address MRSA-infected wounds,an antibacterial peptide polymer-loaded hyaluronic acid(HA)hydrogel(Gel-HA@P)is prepared.The peptide polymer is designed to mimic host defense peptides as the antibiotic alternative showing potent antibacterial activity,low susceptibility to drug resistance and good stability against proteolysis.HA is biocompatible and biodegradable hydrogel substrate as a primary constituent of the extracellular matrix and suitable for cell migration and wound healing.Gel-HA@P shows potent activity against MRSA in vitro and in vivo,low toxicity during the treatment and promotes the wound healing in vivo.This design has proven to be an effective and antibiotic-free strategy to enable the healing of MRSA-infected wounds.
