Micellar delivery system for dequalinium - A lipophilic cationic drug with anticarcinoma activity

被引:38
作者
Weissig, V [1 ]
Lizano, C
Torchilin, VP
机构
[1] Massachusetts Gen Hosp, Dept Radiol, Ctr Imaging Pharmaceut Res, Charlestown, MA 02129 USA
[2] Harvard Med Sch, Charlestown, MA 02129 USA
[3] Univ Alcala de Henares, Fac Med, Dept Biochem & Mol Biol, Madrid 28871, Spain
关键词
micelles; liposomes; drug carriers; dequalinium; bolaamphiphiles;
D O I
10.3109/08982109809035542
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
Delocalized lipophilic cations (DLC) such as dequalinium (DQA) comprise a novel class of antitumor agents. They are more selectively toxic to carcinoma cells in comparison to non-transformed epithelial cells. In addition, DLC's have also been shown to enhance the efficacy of existing anticancer modalities such as radiation and photodynamic therapies. A severe drawback of these attractive novel anticancer agents is their limited solubility in aqueous solutions. To overcome this obstacle, we tried to incorporate DQA into liposomes and micelles. We found that incorporation in liposomes does not seem to be possible at physiological salt concentrations. However, we succeeded in preparing micelles made of polyethylene glycol derivatives of phosphatidylethanolamine (PEG-PE) which stably bind up to 30 mol % DQA.
引用
收藏
页码:391 / 400
页数:10
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