Encapsulation of antineoplastic agents in liposomes

Drug – bio-affecting and body treating compositions – Preparations characterized by special physical form – Liposomes

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264 41, 264 43, A61K 9127

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active

057361550

ABSTRACT:
Methods for encapsulating ionizable antineoplastic agents in liposomes using transmembrane potentials are provided. Trapping efficiencies approaching 100% and rapid loading are readily achieved. Dehydration protocols which allow liposomes to be conveniently used in the administration of antineoplastic agents in a clinical setting are also provided. In accordance with other aspects of the invention, transmembrane potentials are used to reduce the rate of release of ionizable drugs from liposomes.

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