The docetaxel polymeric form and its antitumor activity

A new pharmaceutical form of the antitumor drug docetaxel (Dtx) has been developed based on a biodegradable copolymer of lactic and glycolic acids (PLGA 50/50). This form was constituted of polymeric particles (250 to 300 nm in size) and was highly active against mouse mammary adenocarcinoma (Ca755) and human breast adenocarcinoma (MCF-7(Wt)) cell lines. The results of the in vivo studies carried out on the C(57)Bl/6 female mice line showed an increase in the life span of the animals treated with the polymeric particles. Furthermore, the polymeric drug at a dose of 10 mg/kg and the drug substance at a dose of 20 mg/kg manifested a similar effect. At the same time, the acute toxicity of the Dtx polymeric form was 2.3 times lower than that of the drug substance.