RCSB PDB - 4JA8: Complex of Mitochondrial Isocitrate Dehydrogenase R140Q Mutant with AGI-6780 Inhibitor
- ️RCSB Protein Data Bank
- ️Invalid Date
Targeted inhibition of mutant IDH2 in leukemia cells induces cellular differentiation.
Wang, F., Travins, J., DeLaBarre, B., Penard-Lacronique, V., Schalm, S., Hansen, E., Straley, K., Kernytsky, A., Liu, W., Gliser, C., Yang, H., Gross, S., Artin, E., Saada, V., Mylonas, E., Quivoron, C., Popovici-Muller, J., Saunders, J.O., Salituro, F.G., Yan, S., Murray, S., Wei, W., Gao, Y., Dang, L., Dorsch, M., Agresta, S., Schenkein, D.P., Biller, S.A., Su, S.M., de Botton, S., Yen, K.E.
(2013) Science 340: 622-626
- PubMed: 23558173 Search on PubMed
- DOI: https://doi.org/10.1126/science.1234769
- PubMed Abstract:
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.
Organizational Affiliation:
Agios Pharmaceuticals, Cambridge, MA 02139-4169, USA.