NCIt definition : A liposomal formulation of Vincristine designed to reduce toxicity and improve efficacy.
Vincristine binds irreversibly to microtubules and spindle proteins in S phase of
the cell cycle and interferes with the formation of the mitotic spindle, thereby arresting
tumor cells in metaphase. This agent also depolymerizes microtubules and may also
interfere with amino acid, cyclic AMP, and glutathione metabolism; calmodulin-dependent
Ca -transport ATPase activity; cellular respiration; and nucleic acid and lipid
biosynthesis. (NCI);