Lipid-based drug delivery systems containing phospholipase A2 degradable lipid derivatives and the therapeutic uses thereof
申请人:——
公开号:US20020001614A1
公开(公告)日:2002-01-03
The present invention relates to a lipid-based drug delivery system for administration of a lysolipid derivative present in prodrug from, said prodrug furthermore being a substrate for extracellular phospholipase A
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to the extent that an organic radical can be hydrolytically cleaved off, whereas the aliphatic group of the lysolipid derivative remains substantially unaffected, said system having included therein lipopolymers or glycolipids so as to present hydrophilic chains on the surface of the system. Particularly interesting lipid derivatives are ether lipids and ether lipids in which drug substance is covalently attached in the sn-2-position. Pharmaceutical compositions comprising the drug delivery system can be used in the targeted treatment of various disorders, e.g. cancer, infectious, and inflammatory conditions, etc., i.e. disorders and diseases associated with or resulting from increased levels of extracellular PLA
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activity in the diseased tissue.
本发明涉及一种基于脂质的给药系统,用于给药原药中的溶血磷脂衍生物,所述原药是细胞外磷脂酶 A
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有机自由基可被水解,而溶血磷脂衍生物的脂肪基基本不受影响,所述系统包含脂聚物或糖脂,以便在系统表面形成亲水链。特别有趣的脂质衍生物是醚脂和药物物质在 sn-2 位上共价连接的醚脂。包含该给药系统的药物组合物可用于各种疾病的靶向治疗,如癌症、感染性疾病和炎症等,即与细胞外聚乳酸(PLA)水平升高有关或因细胞外聚乳酸(PLA)水平升高导致的疾病。
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活性增高有关或导致的紊乱和疾病。