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Wang, Fang; Travins, Jeremy; DeLaBarre, Byron; Penard-Lacronique, Virginie; Schalm, Stefanie; Hansen, Erica; Straley, Kimberly; Kernytsky, Andrew; Liu, Wei; Gliser, Camelia; Yang, Hua; Gross, Stefan; Artin, Erin; Saada, Veronique; Mylonas, Elena; Quivoron, Cyril; Popovici-Muller, Janeta; Saunders, Jeffrey O.; Salituro, Francesco G.; Yan, Shunqi; Murray, Stuart; Wei, Wentao; Gao, Yi; Dang, Lenny; Dorsch, Marion; Agresta, Sam; Schenkein, David P.; Biller, Scott A.; Su, Shinsan M.; de Botton, Stephane; Yen, Katharine E.
Science (American Association for the Advancement of Science), 05/2013, Letnik: 340, Številka: 6132Journal Article
A number of human cancers harbor somatic point mutations in the genes encoding isocitrate dehydrogenases 1 and 2 (IDH1 and IDH2). These mutations alter residues in the enzyme active sites and confer a gain-of-function in cancer cells, resulting in the accumulation and secretion of the oncometabolite (R)-2-hydroxyglutarate (2HG). We developed a small molecule, AGI-6780, that potently and selectively inhibits the tumor-associated mutant IDH2/R140Q. A crystal structure of AGI-6780 complexed with IDH2/R140Q revealed that the inhibitor binds in an allosteric manner at the dimer interface. The results of steady-state enzymology analysis were consistent with allostery and slow-tight binding by AGI-6780. Treatment with AGI-6780 induced differentiation of TF-1 erythroleukemia and primary human acute myelogenous leukemia cells in vitro. These data provide proof-of-concept that inhibitors targeting mutant IDH2/R140Q could have potential applications as a differentiation therapy for cancer.
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in: SICRIS
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