发明名称 |
Liposomal formulations with a high antineoplastic agent/lipid ratio |
摘要 |
<p>A method for encapsulation of antineoplastic agents in liposomes is provided, having preferably a high drug:lipid ratio. Liposomes may be made by a process that loads the drug by an active mechanism using a transmembrane ion gradient, preferably a transmembrane pH gradient. Using this technique, trapping efficiencies approach 100%, and liposomes may be loaded with drug immediately prior to use, eliminating stability problems related to drug retention in the liposomes. Drug:lipid ratios employed are about 3-80 fold higher than for traditional liposome preparations, and the release rate of the drug from the liposomes is reduced. An assay method to determine free antineoplastic agents in a liposome preparation is also disclosed.</p> |
申请公布号 |
GR3020725(T3) |
申请公布日期 |
1996.11.30 |
申请号 |
GR19960402090T |
申请日期 |
1996.08.07 |
申请人 |
THE LIPOSOME COMPANY, INC. |
发明人 |
BALLY, MARCEL B.;GINSBERG, RICHARD S.;MITILENES, GEORGE N.;CULIS, PIETER R.;MAYER, LAWRENCE D. |
分类号 |
G01N33/544;A61K9/127;A61K31/505;A61K31/65;A61K31/70;A61K33/24;A61K45/08;A61K47/02;A61K47/12;A61P35/00;B01J13/02;(IPC1-7):A61K9/50 |
主分类号 |
G01N33/544 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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