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相关概念视频

Site-Targeted Drug Delivery Systems: Polymeric Carriers01:24

Site-Targeted Drug Delivery Systems: Polymeric Carriers

Polymeric carriers enhance targeted drug delivery by increasing efficacy while minimizing off-target effects. These carriers comprise a biodegradable polymeric backbone integrated with functional elements that enable targeting, improve physicochemical properties, and regulate drug release.Targeting MechanismsThe targeting ability of polymeric carriers is mediated by a homing device, which is a molecular recognition component designed to selectively bind to specific tissues or cells. Monoclonal...
Modified-Release Drug Delivery Systems: Site-Targeted01:24

Modified-Release Drug Delivery Systems: Site-Targeted

Site-targeted drug delivery systems enhance therapeutic efficacy while minimizing systemic toxicity and treatment costs. Unlike conventional methods, these systems ensure precise drug delivery, improving bioavailability and reducing side effects. Targeted drug delivery is classified into three levels. First-order targeting directs drugs to the capillary beds of specific organs or tissues. Second-order targets specific cell types, such as tumor cells, using receptor-mediated interactions.

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Targeted Plasma Membrane Delivery of a Hydrophobic Cargo Encapsulated in a Liquid Crystal Nanoparticle Carrier
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使用抗体覆盖的半孔纳米容器的受控输送系统.

Estela Climent1, Andrea Bernardos, Ramón Martínez-Máñez

  • 1Instituto de Reconocimiento Molecular y Desarrollo Tecnológico, Centro Mixto Universidad Politécnica de Valencia-Universidad de Valencia, Valencia, Spain.

Journal of the American Chemical Society
|September 11, 2009
PubMed
概括

这项研究引入了新的受控输送系统,使用与抗体覆盖的半孔. 选择性抗原的存在触发着染料的释放,证明了智能药物递送机制.

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科学领域:

  • 材料科学 材料科学 材料科学
  • 纳米技术纳米技术
  • 化学工程是化学工程的重要组成部分.

背景情况:

  • 控制释放系统对于有针对性的交付至关重要.
  • 半孔材料为客人封装提供了较大的表面积.
  • 抗体-抗原相互作用提供了特定的分子识别.

研究的目的:

  • 设计和演示一种新型的抗体覆盖的半孔氧化系统,用于控制客人交付.
  • 为了研究抗原触发释放机制.
  • 评估交付系统的特异性.

主要方法:

  • 运用MCM-41的功能化与一个 hapten. .
  • 将一种以为基础的染料 ([Ru(bipy) ((3)]Cl ((2)) 装入中孔支物中.
  • 用特定于硫法醇的多克隆抗体覆盖毛孔出口.
  • 在酸盐缓冲盐水 (PBS) 中存在各种硫胺的情况下测试染料释放.

主要成果:

  • 成功合成了抗体覆盖的半孔 (S1-AB).
  • 封装着的染料的选择性释放是由酸硫特别触发的.
  • 证明了抗原特异性解封和客体传递机制.
  • 与对照系统的比较突出显示了 hapten-抗体相互作用的重要性.

结论:

  • 开发的系统可以作为一个响应的纳米容器来控制释放.
  • 抗体-抗原相互作用可以精确控制客人交付.
  • 这种方法显示出在各种应用中开发智能交付系统的前景.