Smart Polymeric Micelles as Nanocarriers for Gene and Drug Delivery

K. Kataoka
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引用次数: 8

Abstract

Block copolymers with amphiphilic character, having a large solubility difference between hydrophilic and hydrophobic segments, are known to assemble in an aqueous milieu into polymeric micelles with a mesoscopic size range. These micelles have a fairly narrow size distribution and are featured by their unique core-shell architecture, where hydrophobic segments are segregated from the aqueous exterior to form inner core surrounded by a palisade of hydrophilic segments. Recently, progressive interest has been raised in the application of these block copolymer micelles as novel carrier systems in the field of drug targeting because of the high drug-loading capacity of the inner core as well as of the unique disposition characteristics in the body [1,2].
智能高分子胶束作为基因和药物传递的纳米载体
嵌段共聚物具有两亲性,在亲疏水段之间具有很大的溶解度差异,已知在水环境中组装成具有介观尺寸范围的聚合物胶束。这些胶束具有相当窄的尺寸分布,并以其独特的核壳结构为特征,其中疏水段与水的外部分离,形成由亲水段围成栅栏的内核。最近,由于这些嵌段共聚物胶束内核的高载药能力以及在体内独特的配置特性,这些嵌段共聚物胶束作为新型载体系统在药物靶向领域的应用逐渐引起了人们的兴趣[1,2]。
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