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库马林中的纳米粒子用于光驱表面修饰.

Jan Birringer1, Johannes Konrad1, Stephan Melchner1

  • 1Department of Pharmaceutical Technology, University of Regensburg, Regensburg, 93053, Bavaria, Germany.

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概括
此摘要是机器生成的。

纳米颗粒 (NP) 上的光敏保护组 (PPG) 控制细胞吸收. 暴露于光线会分裂PPG,恢复NP电荷,并增强细胞吸收以提供向药物.

关键词:
细胞透的酸.充电介导的吸收方式纳米颗粒是一种纳米粒子.刺激-响应性的刺激.表面化学 表面化学

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科学领域:

  • 纳米技术 纳米技术
  • 材料科学 材料科学 材料科学
  • 生物医学工程 生物医学工程

背景情况:

  • 光敏保护组 (PPG) 能够通过光触发释放中的分子.
  • 将PPG纳入纳米粒子 (NP) 允许对其表面特性进行时空控制.
  • 在给药后修改NP属性可以提高向的输送和治疗疗效.

研究的目的:

  • 研究PPG修饰的纳米粒子 (NP) 用于光控制的细胞吸收的使用.
  • 用光来证明对NP表面电荷和生物相互作用的时空控制.
  • 建立一种通过外部光刺激触发增强NP细胞进入的方法.

主要方法:

  • 聚合物核心外纳米颗粒 (NP) 通过使用聚D,L-乳-co-glycolide) 和PEG-PLA阻断共聚合物进行合成.
  • 通过带正电荷的细胞透 (CPP) 表面修饰NP,随后通过氨酸衍生PPG功能化.
  • 在紫外线 (365nm) 照射之前和之后进行了泽塔电位测量和细胞吸收测定.

主要成果:

  • 将PPG连接到CPP-NP降低了它们的表面电荷,从+23.50mV降至+12.50mV,显著降低了细胞吸收.
  • 在365nm的光照射成功地切割了PPG,将NP表面电荷恢复到+24.67mV.
  • 恢复的表面电荷导致NP细胞吸收的显著增强.

结论:

  • 具有PPG功能的NP提供了一个有前途的平台,用于对细胞吸收的可诱导光控制.
  • 这种方法使NP细胞相互作用的精确时空调节成为可能,这对于有针对性的药物输送至关重要.
  • 开发的方法为光激活纳米医学的未来应用铺平了道路.