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Hydrophobic Salt-modified Nafion for Enzyme Immobilization and Stabilization
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循环聚合物作为纳米级平台用于酶封装和运输.

Md Rakib Hasan Khan1, Zoe Armstrong2, Tyeaba Tasnim Dipti3

  • 1Biomedical Engineering Program, North Dakota State University, Fargo, North Dakota 58108, United States.

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概括

循环聚合物 (CPs) 可以稳定和封装酶,如酶到纳米粒子. 这些生物相容的CP显示了受控的酶递送和稳定性的潜力.

关键词:
循环聚合物 循环聚合物酶封装封装是一种酶封装.纳米颗粒是一种纳米粒子.聚基酸 (Poly (基酸) 是一种酸.蛋白质蛋白质是一种蛋白质蛋白质.自动组装的自动组装机交通运输运输运输运输运输运输运输运输运输

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科学领域:

  • 聚合物化学 聚合物化学
  • 纳米技术纳米技术
  • 生物材料是一种生物材料.

背景情况:

  • 循环聚合物 (CPs) 形成没有链末的环形结构,可以创建纳米结构来封装分子.
  • 虽然CP封装了小分子,药物和核酸,但它们与蛋白质/酶的相互作用仍然未被探索.

研究的目的:

  • 为了研究基于聚基酸的CP和一个模型酶lyszyme之间的纳米级自组合的形成.
  • 评估这些CP-酶纳米结构的酶稳定能力和受控释放潜力.

主要方法:

  • 非溶剂诱导的相分离,以促进CP-lyszyme相互作用.
  • 纳米粒子特性 (水力动力直径,形状,表面电荷) 的表征,使用动态光散射等技术.
  • 通过循环二重化谱学和ELISA评估酶构成和活性.
  • 电子偏磁共振 (EPR) 光谱用于封装酶的空间定位.
  • 在各种细胞系上进行细胞毒性测定.
  • 使用光标记的lyszyme进行细胞内运输研究.

主要成果:

  • 基于聚基酸的CPs与lyszyme形成稳定的纳米级自组件,作为酶稳定平台.
  • 纳米颗粒的特性取决于CP分子量 (M_n),较大的CP在较低的临界关联度下形成组件.
  • 酶封装保存了酶的结构和活性,使得持续释放.
  • 电子类磁共振证实了在CP支架内酶的空间固定.
  • CP纳米颗粒显示出最小的细胞毒性,并促进细胞内酶的吸收.

结论:

  • 这项研究报告了在循环聚合物支架内酶封装的第一个实例.
  • 基于CP的纳米粒子为酶稳定,受控释放和细胞内输送提供了一个有前途的平台.
  • 这些纳米结构的生物相容性和有效性突显了它们在治疗和生物技术应用中的潜力.