Novel amphiphilic substance, and drug delivery system and molecular imaging system using the same
申请人:Akitsu Hitoshi
公开号:US20080019908A1
公开(公告)日:2008-01-24
The present invention provides a novel amphiphilic substance, a nanoparticle using the novel amphiphilic substance, which can be used as a nanocarrier having high biocompatibility, a drug delivery system and a probe useful for the system, and, a molecular imaging system and a probe useful for the system. An amphiphilic block polymer comprising a hydrophilic block; and a hydrophobic block, wherein the hydrophilic block is a hydrophilic polypeptide chain having 10 or more sarcosine units, and the hydrophobic block is a hydrophobic molecular chain comprising units selected from the group consisting of amino acid units and hydroxyl acid units as essential structural units, and having 5 or more of the essential structural units.
本发明提供了一种新型的两性物质,使用这种新型两性物质制备的纳米粒子可用作具有高生物相容性的纳米载体,药物传递系统以及用于该系统的探针,以及分子成像系统和用于该系统的探针。其中,该两性块聚合物包括一个亲水块;和一个疏水块,其中亲水块是具有10个或更多砒氨酸单元的亲水多肽链,而疏水块是包含氨基酸单元和羟基酸单元等基本结构单元中选择的单位的疏水分子链,并且具有5个或更多基本结构单元。