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The novel cathelicidin-DM antimicrobial peptide conjugated carbomer and thermosensitive chitosan hydrogel speeds up wound-healing in both non-infected and S. aureus-infected wounds

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机构: [1]Kunming Univ Sci & Technol, Fac Life Sci & Technol, Res Ctr Mol Med Yunnan Prov, Kunming, Peoples R China [2]Kunming Univ Sci & Technol, Inst Clin & Basic Med Sci, Peoples Hosp Yunnan Prov 1, Affiliated Hosp, Kunming 650032, Yunnan, Peoples R China
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关键词: cathelicidin-DM Carbomer hydrogel Thermosensitive chitosan hydrogel Wound healing

摘要:
The emergence of chronic wound infections and bacterial resistance presents substantial clinical challenges that impact millions worldwide. Antimicrobial peptides (AMPs), recognized for their potent antimicrobial properties, are considered promising alternatives to conventional antibiotics in light of escalating drug resistance. In previous research, we isolated an AMP named cathelicidin-DM from Duttaphrynus melanostictus, which exhibited broad-spectrum efficacy against multidrug-resistant bacteria and demonstrated wound-healing capabilities. This peptide represents a novel therapeutic option for treating infected chronic wounds. However, AMPs are susceptible to degradation when applied in the treatment of wound infections, which may compromise their effectiveness. To further advance the application of cathelicidin-DM in wound healing, we developed cathelicidin-DM-carbomer and thermosensitive cathelicidin-DM-chitosan hydrogels. Our results indicated that cathelicidin-DM interacted with both carbomer and chitosan at the molecular level, adhering to the surface of the hydrogels, which exhibit a three-dimensional network structure and favorable rheological properties. Animal experiments demonstrated that these cathelicidin-DM hydrogels exhibited hemostatic capabilities and significantly enhance the healing of both infected and non-infected full-thickness skin wounds in mice when applied as wound dressings. In summary, cathelicidin-DM carbomer and cathelicidin-DM chitosan hydrogels represent a dual-functional materials with both antimicrobial and wound-healing properties, thereby demonstrating considerable potential for clinical application.

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大类 | 1 区 化学
小类 | 1 区 应用化学 1 区 高分子科学 2 区 生化与分子生物学
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Q1 BIOCHEMISTRY & MOLECULAR BIOLOGY Q1 CHEMISTRY, APPLIED Q1 POLYMER SCIENCE

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第一作者机构: [1]Kunming Univ Sci & Technol, Fac Life Sci & Technol, Res Ctr Mol Med Yunnan Prov, Kunming, Peoples R China
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