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首页> 外文期刊>Advanced Materials >Site-Specific Biomimicry of Antioxidative Melanin Formation and Its Application for Acute Liver Injury Therapy and Imaging
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Site-Specific Biomimicry of Antioxidative Melanin Formation and Its Application for Acute Liver Injury Therapy and Imaging

机译:抗氧化黑色素形成的特异性生物化及其对急性肝损伤治疗和成像的应用

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摘要

Biocompatible nano-antioxidants composed of natural molecules/materials, such as dopamine and melanin, are of great interest for diverse biomedical applications. However, the lack of understanding of the precise structure of these biomaterials and thus the actual dose of effective components impedes their advancement to translation. Herein, a strategy to mimic in situ melanin formation and explore its antioxidative applications is reported, by developing a PEGylated, phenylboronic-acid-protected L-DOPA precursor (PAD) that can self-assemble into well-defined nanoparticles (PADN). Exposure to oxidative species leads to deprotection of phenylboronic acids, transforming PADN to PEG-L-DOPA, which, similar to the biosynthetic pathway of melanin, can be oxidized and polymerized into an antioxidative melanin-like structure. With ultrahigh stability and superior antioxidative activity, the PADN shows remarkable efficacy in prevention and treatment of acute liver injury/failure. Moreover, the in situ structure transformation enables PADN to visualize damaged tissue noninvasively by photoacoustic imaging. Overall, a bioinspired antioxidant with precise structure and site-specific biological activity for theranostics of oxidative stress-related diseases is described.
机译:由天然分子/材料组成的生物相容性纳米抗氧化剂,例如多巴胺和黑色素,对各种生物医学应用具有很大的兴趣。然而,缺乏对这些生物材料的精确结构的理解,因此实际的有效成分的含量阻碍了它们的推动推动。这里,通过开发可以自组装成明确定义的纳米颗粒(PADN),通过开发聚苯化的苯硼 - 酸保护的L-DOPA前体(PAD)来模拟原位黑色素形成和探索其抗氧化应用的策略。暴露于氧化物质导致苯硼酸的脱保护,将PAGN转化为PEG-L-DOPA,其类似于黑色素的生物合成途径,可以被氧化并聚合成抗氧化黑色素样结构。通过超高稳定性和优异的抗氧化活性,PADN在预防和治疗急性肝损伤/失效时显示出显着的疗效。此外,原位结构变换使PADN能够通过光声成像使受损的组织无与伦比的组织可视化。总之,描述了具有精确结构和特异性特异性氧化应激相关疾病的特异性生物活性的生物透明抗氧化剂。

著录项

  • 来源
    《Advanced Materials》 |2021年第34期|2102391.1-2102391.14|共14页
  • 作者单位

    Fuzhou Univ Fujian Sci & Technol Innovat Lab Optoelect Inform Coll Chem MOE Key Lab Analyt Sci Food Safety & Biol Fuzhou 350108 Peoples R China|Harvard Med Sch Brigham & Womens Hosp Ctr Nanomed Boston MA 02115 USA;

    Fuzhou Univ Fujian Sci & Technol Innovat Lab Optoelect Inform Coll Chem MOE Key Lab Analyt Sci Food Safety & Biol Fuzhou 350108 Peoples R China;

    Harvard Med Sch Brigham & Womens Hosp Ctr Nanomed Boston MA 02115 USA|Jiangnan Univ Sch Pharmaceut Sci Minist Educ Key Lab Carbohydrate Chem & Biotechnol Wuxi 214122 Jiangsu Peoples R China;

    Fuzhou Univ Fujian Sci & Technol Innovat Lab Optoelect Inform Coll Chem MOE Key Lab Analyt Sci Food Safety & Biol Fuzhou 350108 Peoples R China;

    Harvard Med Sch Brigham & Womens Hosp Ctr Nanomed Boston MA 02115 USA;

    Harvard Med Sch Brigham & Womens Hosp Ctr Nanomed Boston MA 02115 USA;

    Fuzhou Univ Fujian Sci & Technol Innovat Lab Optoelect Inform Coll Chem MOE Key Lab Analyt Sci Food Safety & Biol Fuzhou 350108 Peoples R China;

    Fuzhou Univ Fujian Sci & Technol Innovat Lab Optoelect Inform Coll Chem MOE Key Lab Analyt Sci Food Safety & Biol Fuzhou 350108 Peoples R China;

    Fuzhou Univ Fujian Sci & Technol Innovat Lab Optoelect Inform Coll Chem MOE Key Lab Analyt Sci Food Safety & Biol Fuzhou 350108 Peoples R China;

    Fuzhou Univ Fujian Sci & Technol Innovat Lab Optoelect Inform Coll Chem MOE Key Lab Analyt Sci Food Safety & Biol Fuzhou 350108 Peoples R China;

    Harvard Med Sch Brigham & Womens Hosp Ctr Nanomed Boston MA 02115 USA;

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

    antioxidative therapy; biomimicry; liver injury; melanin; photoacoustic imaging;

    机译:抗氧化疗法;生物化;肝损伤;黑色素;光声成像;

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