Platinum aggregates and process for producing the same

A - Human Necessities – 61 – K

Patent

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Details

A61K 33/24 (2006.01) A61K 9/127 (2006.01) A61K 9/72 (2006.01) A61K 31/685 (2006.01) A61P 35/00 (2006.01)

Patent

CA 2724230

One aspect of the disclosure relates to a new form of lipid-complexed active platinum compound, which allows for high concentrations of platinum compound in the composition. For example, the concentration of cisplatin in the composition is higher at room temperature, e.g., about greater than 1.2 mg/mL, compared to 1 mg/mL in aqueous solution. In one embodiment, the present invention is directed to a composition comprising a lipid- complexed active platinum compound, wherein the complex has a lipid to drug (L/D) ratio of less than about 1 by weight, e.g. about 0.10 to 1, wherein the lipid-complexed active platinum compound comprises at least one lipid and at least one active platinum compound. In other embodiments, wherein lipid-com-plexed active platinum compound has an average volume-weighted diameter of about 0.5 to about 20 microns. In still other em-bodiments, the composition further comprises a liposome. The liposome may comprise at least one lipid, and may further com-prise at least one active platinum compound. The disclosure also relates to a pharmaceutical formulation comprising a lipid com-plexed active platinum compound and a pharmaceutically acceptable carrier or diluent. The pharmaceutical formulation may be formulated for inhalation or injection.

Selon un aspect, la présente invention concerne une nouvelle forme de composé de platine actif à complexe lipidique, qui assure des concentrations élevées de composé de platine dans la composition. Par exemple, la concentration de cisplatine dans la composition est supérieure à la température ambiante, par exemple, supérieure à 1,2 mg/mL comparée à 1 mg/mL en solution aqueuse. Selon un mode de réalisation, la présente invention concerne une composition comportant un composé de platine à complexe lipidique, le complexe comprenant un rapport lipide/médicament (L/D) inférieur à environ 1 en poids, par exemple entre 0,01 et 1. Le composé de platine actif à complexe lipide comporte au moins un lipide et au moins un composé de platine actif. Selon dautres modes de réalisation, le composé de platine actif à complexe lipidique comporte un diamètre moyen pondéré par un volume compris entre 0,5 et environ 20 microns. Selon certains autres modes de réalisation, la composition comporte également un liposome. Le liposome peut comporter au moins un lipide, et peut également comporter au moins un composé de platine actif. Linvention concerne également une préparation pharmaceutique comportant un composé de platine actif à complexe lipidique et un support ou diluant pharmaceutiquement acceptable. La préparation pharmaceutique peut être formulée pour inhalation ou injection.

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