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首页> 外文期刊>Biomaterials Science >Guanidine-rich helical polypeptides bearing hydrophobic amino acid pendants for efficient gene delivery
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Guanidine-rich helical polypeptides bearing hydrophobic amino acid pendants for efficient gene delivery

机译:富含富胍的螺旋螺旋多肽,携带疏水性氨基酸吊坠,用于有效的基因递送

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摘要

Non-viral gene delivery vectors with high transfection efficiency both in vitro and in vivo and low cytotoxicity are highly desirable for clinical applications. Herein, a series of guanidine-rich polypeptides bearing hydrophobic amino acid pendants was efficiently prepared via the 1,3-dipolar cycloaddition between azido decorated polypeptide and propargyl functionalized guanidinium and N-acetylamino acids. CD analysis indicated alpha-helical conformations of all resulting polypeptides in aqueous solution. The guanidine-rich polypeptide/DNA complexes showed significantly enhanced cellular internalization and high cell viability (>90%) in different mammalian cell lines (i.e., HeLa and RAW 264.7) at concentrations of the best performance. The top-performing guanidine-rich polypeptide containing 10% N-acetyl-l-valine pendants outperformed the commercial transfection reagent PEI by 400 times in vitro and 6 times in vivo. This study provides a new guidance for future molecular design of non-viral gene vectors with high delivery efficiency and low cytotoxicity.
机译:对于临床应用,非常需要具有高转染效率和体内和低细胞毒性的非病毒基因递送载体。在此,通过Azido装饰多肽和官能化的胍和N-乙酰氨基酸之间的1,3-偶极环加装配有效地制备了一系列含有疏水性氨基酸坠落的富含富含疏水氨基酸垂侧的耐疏水氨基酸垂饰。 CD分析表明水溶液中所有得到的多肽的α-螺旋构象。富含富含哺乳动物细胞系(即Hela和Raw 264.7)的富含富肽的多肽/ DNA复合物在最佳性能的浓度下显着提高了细胞内化和高细胞活性(> 90%)。含有10%N-乙酰-1-缬氨酸坠子的富含富含富含富含富含富含的富含胍的多肽在体外,体内600倍而优于商业转染试剂PEI。本研究为未来的递送效率和低细胞毒性的非病毒基因载体的未来分子设计提供了新的指导。

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  • 来源
    《Biomaterials Science》 |2021年第7期|共9页
  • 作者单位

    Soochow Univ Collaborat Innovat Ctr Suzhou Nano Sci &

    Technol Inst Funct Nano &

    Soft Mat FUNSOM Suzhou 215123 Peoples R China;

    Soochow Univ Collaborat Innovat Ctr Suzhou Nano Sci &

    Technol Inst Funct Nano &

    Soft Mat FUNSOM Suzhou 215123 Peoples R China;

    Soochow Univ Collaborat Innovat Ctr Suzhou Nano Sci &

    Technol Inst Funct Nano &

    Soft Mat FUNSOM Suzhou 215123 Peoples R China;

    Soochow Univ Collaborat Innovat Ctr Suzhou Nano Sci &

    Technol Inst Funct Nano &

    Soft Mat FUNSOM Suzhou 215123 Peoples R China;

    Soochow Univ Collaborat Innovat Ctr Suzhou Nano Sci &

    Technol Inst Funct Nano &

    Soft Mat FUNSOM Suzhou 215123 Peoples R China;

    Soochow Univ Collaborat Innovat Ctr Suzhou Nano Sci &

    Technol Inst Funct Nano &

    Soft Mat FUNSOM Suzhou 215123 Peoples R China;

    Soochow Univ Collaborat Innovat Ctr Suzhou Nano Sci &

    Technol Inst Funct Nano &

    Soft Mat FUNSOM Suzhou 215123 Peoples R China;

    Soochow Univ Collaborat Innovat Ctr Suzhou Nano Sci &

    Technol Inst Funct Nano &

    Soft Mat FUNSOM Suzhou 215123 Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 分子生物学;
  • 关键词

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