NCIt definition : A depsipeptide originally isolated from the marine mollusk Dolabella auricularia with
potential antineoplastic activity. Less potent than the structurally-related compound
dolastatin 10, dolastatin 15 binds weakly to tubulin and blocks microtubule assembly,
thereby inhibiting mitosis. Dolastatin 15 also induces tumor cell apoptosis through
a mechanism involving bcl-2, an oncoprotein that is overexpressed in some cancers.
(NCI04);