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    • 1. 发明申请
    • LIPOSOMAL CYCLOSPORIN FORMULATIONS AS AGENTS FOR IMMUNOSUPPRESSION AND MULTIPLE DRUG RESISTANT INDICATIONS
    • 作为免疫抑制剂和多种耐药性物质的药物环磷酰胺制剂
    • WO1996040064A1
    • 1996-12-19
    • PCT/US1996009053
    • 1996-06-06
    • NEXSTAR PHARMACEUTICALS, INC.
    • NEXSTAR PHARMACEUTICALS, INC.MOYNIHAN, Karen, L.ADLER-MOORE, JillCHIANG, Su-Ming
    • A61K09/127
    • A61K38/13A61K9/127
    • Improved liposomal encapsulated cyclosporin formulations are disclosed. The liposomes are efficacious as immunosuppressant agents and in the treatment of drug resistant cancers. The formulations include liposomes comprised of a phosphatidylcholine, cholesterol, a phosphatidylglycerol and a cyclosporin. In one embodiment, the mole ratios of phosphatidylcholine, cholesterol, phosphatidylglycerol and cyclosporin are about 21:0.5:3:1 to 21:1.5:3:1 and 24:0.5:3:1 to 24:1.5:31 wherein the liposomes comprise unilamellar vesicles having a size less than 100 nm. In a preferred embodiment, the compositions are stable upon injection into the blood stream of a mammal, preferably a human. In this embodiment, the preferred ratios of PC:chol:PG:CSA are from about 28:1:3:1 to 40:1:3:1. The preferred formulas are PC:chol:DMPG:CSA wherein the PC is HSPC and the molar ratios are: 28:1:3:1, 30:1:3:1, 32:1:3:1, 34:1:3:1, 35:1:3:1, 36:1:3:1, and 40:1:3:1. Also provided is a liposome encapsulated cyclosporin which provides for a cyclosporin which associates to a significant degree with a liposomal/plasma fraction (vs. cell fraction) of blood as a function of time. Liposomes having these properties are comprised of phosphatidylcholine, cholesterol, dimyristoylphosphatidylglycerol and cyclosporin. These liposomes are unilamellar and have a size less than 75 nanometers and are stable in whole mammal blood. Further provided are liposomes having increased therapeutic indices. The liposomes are stable on storage, contain a therapeutically effective amount of a cyclosporin, provide a liposomal cyclosporin formulation having reduced toxicity, and, in the preferred embodiment, provides a liposomal formulation which is stable in whole blood.
    • 公开了改进的脂质体包封的环孢菌素制剂。 脂质体作为免疫抑制剂和用于治疗耐药性癌症是有效的。 制剂包括由磷脂酰胆碱,胆固醇,磷脂酰甘油和环孢菌素组成的脂质体。 在一个实施方案中,磷脂酰胆碱,胆固醇,磷脂酰甘油和环孢菌素的摩尔比为约21:0.5:3:1至21:1.5:3:1和24:0.5:3:1至24:1.5:31,其中脂质体包含 具有小于100nm尺寸的单层囊泡。 在优选的实施方案中,组合物在注射到哺乳动物,优选人的血液中时是稳定的。 在本实施例中,PC:chol:PG:CSA的优选比例为约28:1:3:1至40:1:3:1。 优选的配方是PC:chol:DMPG:CSA,其中PC是HSPC,摩尔比为:28:1:3:1,30:1:3:1,32:1:3: 3:1,35:1:3:1,36:1:3:1和40:1:3:1。 还提供了一种脂质体包封的环孢菌素,其提供了一种环状细胞,其显着程度地与作为时间的函数的血液的脂质体/血浆部分(相对于细胞部分)相关联。 具有这些性质的脂质体由磷脂酰胆碱,胆固醇,二肉豆蔻酰磷脂酰甘油和环孢菌素组成。 这些脂质体是单层的,其尺寸小于75纳米,在整个哺乳动物血液中是稳定的。 还提供了具有增加的治疗指数的脂质体。 脂质体在储存时稳定,含有治疗有效量的环孢菌素,提供具有降低的毒性的脂质体环孢菌素制剂,并且在优选的实施方案中,提供在全血中稳定的脂质体制剂。