antitubulinEtymologyFrom anti- + tubulin.adjInhibiting the action of tubulin.“Clinical resistance to the Bcr-Abl inhibitor imatinib is a critical problem in treating CML. This study investigated the antitumor effect and mechanism of MPT0B169, a new antitubulin agent, in K562 CML cells and their derived imatinib-resistant cells, IMR2 and IMR3.”nounAny agent that inhibits the action of tubulin.