相关实验视频

Updated: Sep 4, 2026

Formulation of Diblock Polymeric Nanoparticles through Nanoprecipitation Technique

Formulation of Diblock Polymeric Nanoparticles through Nanoprecipitation Technique

Published on: September 20, 2011

作为长循环纳米载体的多臂星形块共聚物质的聚乙烯糖醇-聚甲糖醇) 作为长循环纳米载体

Yasuhiro Nakagawa^1,2, Kotaro Ushidome¹, Keita Masuda¹

¹Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan.

|June 28, 2023

概括

由聚甲基 (PFG) 和聚乙烯糖醇 (PEG) 制成的新型星形块共聚合物显示出药物输送的前景. 这些纳米载体有效地加载和释放药物,在体内表现出长时间的循环.

科学领域:

聚合物化学聚合物化学
材料科学材料科学材料科学
纳米技术纳米技术

背景情况:

星形块共聚物为药物输送等先进应用提供可调节的纳米架构.
聚甲基醇 (PFG) 和聚乙烯糖 (PEG) 是适合纳米载体发展的生物相容材料.
精确控制的架构对于优化纳米载体性能至关重要.

研究的目的:

为了合成和表征多臂星形PFG-PEG块共聚合物.
通过使用Diels-Alder化学来研究这些共聚物的药物加载和释放能力.
评估开发的纳米载体的体内循环时间.

主要方法:

通过控制单体养比,合成4和6臂星形PFG-PEG块共聚物.
使用动态光散射在不同溶剂 (DMF和水) 中的共聚合物尺寸的表征.
通过迪尔斯-阿尔德反应加载药物,并在加热时通过反向迪尔斯-阿尔德反应触发释放.
在小鼠体内药理动力学研究以评估静脉注射后血液循环时间.

主要成果:

成功合成了带有控制臂长度的星形PFG-PEG块共聚合物.
由于聚合,共聚物在DMF (<10 nm) 和水 (>20 nm) 中表现出不同的尺寸行为.
实现了具有马莱胺的模型药物的高效加载和快速的热触发释放.
在小鼠的静脉注射表明血液循环延长,超过80%的血液在6小时内仍在循环.

结论:

星形PFG-PEG块共聚合物具有适合纳米载体应用的调节性质.
迪尔斯-阿尔德化学可以实现有效的药物加载和受控释放.
这些纳米载体在体内表现出极好的长循环性质,突出了它们在药物输送系统中的潜力.

关键词:

迪尔斯的年龄更大了纳米医药是一种纳米医药.药物动力学药物动力学聚乙烯糖醇 (PEG) 是一种星级聚合物星级聚合物

更多相关视频

Anionic Polymerization of an Amphiphilic Copolymer for Preparation of Block Copolymer Micelles Stabilized by π-π Stacking Interactions

Anionic Polymerization of an Amphiphilic Copolymer for Preparation of Block Copolymer Micelles Stabilized by π-π Stacking Interactions

Published on: October 10, 2016

Rapid, Scalable Assembly and Loading of Bioactive Proteins and Immunostimulants into Diverse Synthetic Nanocarriers Via Flash Nanoprecipitation

Rapid, Scalable Assembly and Loading of Bioactive Proteins and Immunostimulants into Diverse Synthetic Nanocarriers Via Flash Nanoprecipitation

Published on: August 11, 2018

相关概念视频

Modified-Release Drug Delivery Systems: Site-Targeted

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.

Site-Targeted Drug Delivery Systems: Polymeric Carriers

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...