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Bioinspired Nanofibrous Glycopeptide Hydrogel Dressing for Accelerating Wound Healing: A Cytokine-Free, M2-Type Macrophage Polarization Approach

机译:Bioinspired纳面纤维糖肽水凝胶敷料加速伤口愈合:无细胞因子,M2型巨噬细胞极化方法

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摘要

Wound management remains a major concern in clinical care. Conventional dressings and hydrogels delivering drugs or cells can drive wound healing. However, these approaches are limited either by unnecessary bleeding and tissue tearing, or sophisticated fabrication, high cost, and drug-related side effects. Herein, a novel bioinspired glycopeptide hydrogel is rationally designed to mimic the glycoprotein components and nanofibrous architecture of cutaneous extracellular matrix (ECM) for self-accelerating the wound healing by regulating macrophage polarization without any additional therapeutic agents. The glycopeptide hydrogel, termed as GM-peptide hybrid hydrogel (GP(gel)), is established by the self-assembly of beta-sheet Q11 peptide-grafted glucomannan, with nanofibrous structure, high water content, porosity, and self-healing properties. It is observed that GP(gel)displays remarkable capability of polarizing primary macrophages to M2-type phenotype in vitro and in vivo by inducing the activation of mannose receptors through ERK/STAT6 pathway. GP(gel)unprecedentedly expedites the wound closure rate and the regeneration of epidermis tissues in full-thickness skin excision models without drugs, exogenous cytokines, or seeded cells. More significantly, GP(gel)could promote angiogenesis in the repaired skin tissues. Collectively, such a novel ECM-mimicking glycopeptide hydrogel provides a highly effective treatment approach for skin wounds and may serve as a promising scaffold in regenerative medicine.
机译:伤口管理仍然是临床护理的主要问题。递送药物或细胞的常规敷料和水凝胶可以驱动伤口愈合。然而,这些方法受到不必要的出血和组织撕裂,或复杂的制造,高成本和药物相关的副作用。在此,一种新型的生物悬浮糖肽水凝胶是合理设计的,以模仿糖蛋白组分和皮肤细胞外基质(ECM)的纳米纤维架构来通过在没有任何其他治疗剂的情况下调节巨噬细胞极化来自我加速伤口愈合。被β-型Q11肽接枝的葡糖胺的自组装,纳米纤维结构,高水含量,孔隙度和自愈性能,确定称为GM肽杂交水凝胶(GP(凝胶))的糖肽水凝胶。 。观察到,GP(凝胶)通过ERK / Stat6途径诱导甘露糖受体的活化,在体外和体内偏振偏振巨噬细胞至M2型表型的显着能力。 GP(凝胶)前所未有地加速伤口闭合速率和表皮组织的再生在没有药物,外源细胞因子或种子细胞的全厚度皮肤切除模型中的表皮组织再生。更明显地,GP(凝胶)可以促进修复的皮肤组织中的血管生成。统称,这种新型ECM模仿糖肽水凝胶为皮肤伤口提供了高效的处理方法,并且可以作为再生医学中有前途的支架。

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  • 来源
    《Advanced Functional Materials》 |2020年第52期|2006454.1-2006454.13|共13页
  • 作者单位

    Tianjin Univ Sch Chem Engn & Technol Dept Polymer Sci & Engn Minist Educ Key Lab Syst Bioengn Tianjin 300072 Peoples R China|Chinese Acad Med Sci & Peking Union Med Coll Inst Biomed Engn Tianjin Key Lab Biomat Res Tianjin 300192 Peoples R China;

    Tianjin Univ Sch Chem Engn & Technol Dept Polymer Sci & Engn Minist Educ Key Lab Syst Bioengn Tianjin 300072 Peoples R China|Chinese Acad Med Sci & Peking Union Med Coll Inst Biomed Engn Tianjin Key Lab Biomat Res Tianjin 300192 Peoples R China;

    Chinese Acad Med Sci & Peking Union Med Coll Inst Biomed Engn Tianjin Key Lab Biomat Res Tianjin 300192 Peoples R China;

    Chinese Acad Med Sci & Peking Union Med Coll Inst Biomed Engn Tianjin Key Lab Biomat Res Tianjin 300192 Peoples R China;

    Chinese Acad Med Sci & Peking Union Med Coll Inst Biomed Engn Tianjin Key Lab Biomat Res Tianjin 300192 Peoples R China;

    Tianjin Univ Sch Chem Engn & Technol Dept Polymer Sci & Engn Minist Educ Key Lab Syst Bioengn Tianjin 300072 Peoples R China|Collaborat Innovat Ctr Chem Sci & Engn Tianjin Tianjin 300072 Peoples R China;

    Nankai Univ Coll Life Sci State Key Lab Med Chem Biol Tianjin 300071 Peoples R China;

    Chinese Acad Med Sci & Peking Union Med Coll Inst Biomed Engn Tianjin Key Lab Biomat Res Tianjin 300192 Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    extracellular matrix; glycopeptide hydrogel; macrophage polarization; wound healing;

    机译:细胞外基质;糖肽水凝胶;巨噬细胞极化;伤口愈合;

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