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  • Title: Chemotherapeutic efficacy of Nocodazole encapsulated in liposomes on L1210 murine leukemia.
    Author: Laduron C, Coune A, Atassi G, Hildebrand J, Ruysschaert JM, Stryckmans P, Brassinne C.
    Journal: Res Commun Chem Pathol Pharmacol; 1983 Mar; 39(3):419-36. PubMed ID: 6190203.
    Abstract:
    The use of sonicated phospholipid vesicles (liposomes) as carriers of methyl [5-(2-thienylcarbonyl)-1H-benzimidazol-2-yl] carbamate (Nocodazole), a water insoluble antimitotic compound active on mouse L1210 leukemia was investigated. Nocodazole was incorporated in dipalmitoyl-phosphatidylcholine: cholesterol: stearylamine (4:3:1) liposomes that were stable at room temperature for at least 48 hr. No drug leakage nor lipid exchange occurred after a 4 hr incubation at 37 degrees C with RPMI 1640 medium supplemented with 10% fetal calf serum. L1210 cells preincubated (2 x 10(6) cells/ml) at 37 degrees C for 3 hr with various concentrations of micronized Nocodazole or liposome-entrapped Nocodazole were injected i.p. into normal CDF1 mice (10(5) cells/mouse). Longest mean survival times and long-time survivors were observed in the group inoculated with L1210 cells preincubated with liposomes containing Nocodazole. CDF1 mice bearing i.p. or i.v. L1210 leukemia were treated i.p. on days 1, 5 and 9 with micronized or liposome-entrapped Nocodazole. Administration of this latter preparation induced a 50% increase in animal life span at the dosage (25 mg/kg/day) half the one required with the free compound (50 mg/kg/day). The present data indicate that enclosing Nocodazole, a water insoluble antimitotic compound, in liposomes results in an enhanced therapeutic activity against L1210 murine leukemia.
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