6n6o | pdb_00006n6o
Crystal structure of the human TTK in complex with an inhibitor
Structural highlights
FunctionTTK_HUMAN Phosphorylates proteins on serine, threonine, and tyrosine. Probably associated with cell proliferation. Essential for chromosome alignment by enhancing AURKB activity (via direct CDCA8 phosphorylation) at the centromere, and for the mitotic checkpoint.[1] Publication Abstract from PubMedTriple negative breast cancer (TNBC) is an aggressive disease with high relapse rates and few treatment options. Outlined in previous publications, we identified a series of potent, dual TTK/CLK2 inhibitors with strong efficacy in TNBC xenograft models. Pharmacokinetic properties and kinome selectivity were optimized, resulting in the identification of a new series of potent, selective, and orally bioavailable TTK inhibitors. We describe here the structure-activity relationship of the 2,4-disubstituted-7 H-pyrrolo[2,3- d]pyrimidine series, leading to significant single agent efficacy in a TNBC xenograft model without body weight loss. The design effort evolving an iv-dosed TTK/CLK2 inhibitor to an orally bioavailable TTK inhibitor is described. Design and Optimization Leading to an Orally Active TTK Protein Kinase Inhibitor with Robust Single Agent Efficacy.,Riggs JR, Elsner J, Cashion D, Robinson D, Tehrani L, Nagy M, Fultz KE, Krishna Narla R, Peng X, Tran T, Kulkarni A, Bahmanyar S, Condroski K, Pagarigan B, Fenalti G, LeBrun L, Leftheris K, Zhu D, Boylan JF J Med Chem. 2019 May 9;62(9):4401-4410. doi: 10.1021/acs.jmedchem.8b01869. Epub, 2019 Apr 30. PMID:30998356[2] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See AlsoReferences
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