NCIt definition : A folate receptor-targeting cytotoxic drug conjugate consisting of a folate vitamin
analogue linked to a vinca alkaloid microtubule destabilizing agent with potential
antineoplastic activity. Mediated through its folate moiety, folate receptor-targeted
vinca alkaloid EC0489 delivers the cytotoxic vinca alkaloid moiety directly to cells
expressing folic acid receptors, frequently upregulated in many types of tumor cells.
After ligand-receptor internalization, the vinca alkaloid moiety binds to tubulin
and disrupts microtubule assembly-disassembly dynamics, resulting in cell cycle arrest
and apoptosis. The relative tumor cell specificity of this agent reduces the toxicity
profile of its vinca alkaloid moiety.;