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Bioinspired Blood Compatible Surface Having Combined Fibrinolytic and Vascular Endothelium-Like Properties via a Sequential Coimmobilization Strategy

机译:通过顺序共固定策略结合了纤溶和血管内皮样特性的生物启发血液相容性表面

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摘要

Developing surfaces with antithrombotic properties is of great interest for the applications of blood-contacting biomaterials and medical devices. It is promising to coimmobilize two or more biomolecules with different and complementary functions to improve blood compatibility. However, the general one-pot strategy usually adopted by previous studies suffers the problems of inevitable competition between diverse biomolecules and uncontrollability of the relative quantities of the immobilized biomolecules. To solve these problems, a new sequential coimmobilization strategy is proposed and applied to fabricate a blood compatible surface. Polyurethane surface is modified with a copolymer, poly(2-hydroxyethyl methacrylate-co-1-adamantan-1-ylmethyl methacrylate), which serves as a linker-spacer for sequential attachment of two functional molecules, a hexapeptide containing REDV (Arg-Glu-Asp-Val) sequence, and a modified cyclodextrin bearing 7 lysine ligands, through covalent bonding and host-guest interaction, respectively. The resulting surface combines the antithrombogenic properties of the vascular endothelium and the clot lysing properties of the fibrinolytic system. Importantly, neither of the two functions of REDV peptide and lysine is compromised by the presence of the other, suggesting the enhanced blood compatibility. These results suggest a new strategy to engineer multifunctional surfaces by coimmobilization of bioactive molecules having unique functionalities.
机译:具有抗血栓形成特性的表面的开发对于血液接触生物材料和医疗设备的应用非常感兴趣。有望将具有不同和互补功能的两种或更多种生物分子共固定化以改善血液相容性。然而,先前研究通常采用的一般的一锅法策略存在多种生物分子之间不可避免的竞争以及固定化生物分子的相对量不可控的问题。为了解决这些问题,提出了一种新的顺序共固定化策略,并将其应用于制造血液相容性表面。用共聚物聚甲基丙烯酸2-羟乙酯-甲基丙烯酸2-羟基-1-金刚烷-1-基甲基丙烯酸酯对聚氨酯表面进行改性,该共聚物用作两个功能分子(含REDV的六肽)的连接间隔基-Asp-Val)序列,以及经过修饰的带有7个赖氨酸配体的环糊精,分别通过共价键合和宿主-客体相互作用形成。所得表面结合了血管内皮的抗血栓形成特性和纤溶系统的凝块溶解特性。重要的是,REDV肽和赖氨酸的两个功能都不会因另一个的存在而受到损害,表明血液相容性增强。这些结果提出了通过共固定具有独特功能的生物活性分子来工程化多功能表面的新策略。

著录项

  • 来源
    《Advanced Functional Materials》 |2015年第32期|5206-5213|共8页
  • 作者单位

    Soochow Univ, Coll Chem Chem Engn & Mat Sci, Suzhou 215123, Jiangsu, Peoples R China;

    Soochow Univ, Coll Chem Chem Engn & Mat Sci, Suzhou 215123, Jiangsu, Peoples R China;

    Soochow Univ, Coll Chem Chem Engn & Mat Sci, Suzhou 215123, Jiangsu, Peoples R China;

    Soochow Univ, Coll Chem Chem Engn & Mat Sci, Suzhou 215123, Jiangsu, Peoples R China;

    Soochow Univ, Coll Chem Chem Engn & Mat Sci, Suzhou 215123, Jiangsu, Peoples R China;

    Soochow Univ, Coll Chem Chem Engn & Mat Sci, Suzhou 215123, Jiangsu, Peoples R China;

    Soochow Univ, Coll Chem Chem Engn & Mat Sci, Suzhou 215123, Jiangsu, Peoples R China;

    Soochow Univ, Coll Chem Chem Engn & Mat Sci, Suzhou 215123, Jiangsu, Peoples R China;

    Soochow Univ, Coll Chem Chem Engn & Mat Sci, Suzhou 215123, Jiangsu, Peoples R China|Soochow Univ, Ctr Soft Condensed Matter Phys & Interdisciplinar, Suzhou 215006, Jiangsu, Peoples R China;

    Soochow Univ, Coll Chem Chem Engn & Mat Sci, Suzhou 215123, Jiangsu, Peoples R China;

    Soochow Univ, Coll Chem Chem Engn & Mat Sci, Suzhou 215123, Jiangsu, Peoples R China|McMaster Univ, Sch Biomed Engn, Hamilton, ON L8S 4L7, Canada|McMaster Univ, Dept Chem Engn, Hamilton, ON L8S 4L7, Canada;

    Soochow Univ, Coll Chem Chem Engn & Mat Sci, Suzhou 215123, Jiangsu, Peoples R China;

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

    endothelialization; fibrinolytic systems; hemocompatible surfaces; host-guest interaction;

    机译:内皮化;纤溶系统;血液相容性表面;宿主-客体相互作用;

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