NEW LIPOSOME COMPOSITIONS Russian patent published in 2012 - IPC A61K31/282 A61K38/40 A61K9/127 A61P35/00 

FIELD: medicine, pharmaceutics.

SUBSTANCE: group of inventions refers to medicine and is applicable in the form of liposome-containing compounds for cancer therapy. A liposome contains one or more phosphatidylcholines, a first derivative of N-(ω)-dicarboxylic acid and phosphatidylethanolamine, an orientation modified derivative of N-(ω)-dicarboxylic acid and phosphatidylethanolamine, an encapsulated therapeutic agent and at least one additional lipid which represents cholesterol or a cholesterol derivative. The orientation modified derivative of N-(ω)-dicarboxylic acid and phosphatidylethanolamine contains an orientation ligand attached to a second derivative of N-(ω)-dicarboxylic acid and phosphatidylethanolamine. The first derivative of N-(ω)-dicarboxylic acid and phosphatidylethanolamine is presented by formula 1,

and the second derivative of N-(ω)-dicarboxylic acid and phosphatidylethanolamine is presented by formula 3, . The orientation ligand preferentially represents transferring, while the encapsulated therapeutic agent is oxalyplatine. The liposome is free from non-modified phosphatidylethanolamine, egg phosphatidylcholine or hydrophilic polymer used to prolong a half lifetime of the liposome in a circulatory channel, and the orientation ligand is other than an intact antibody. What is also described is a method of producing the liposome and a method of treating cancer with using it.

EFFECT: group of inventions provides better target delivery of the therapeutic substance in the tumour cells.

113 cl, 25 dwg, 4 tbl, 30 ex