MedChemComm p. 507 - 511 (2014)
Update date:2022-08-11
Topics:
Li, Wei
Wan, Xiaobo
Zeng, Fanqi
Xie, Yuting
Wang, Yanli
Zhang, Wei
Li, Li
Huang, Niu
Pim-1 kinase is a serine/threonine kinase which plays an important role in cell proliferation and differentiation. The Pim-1 kinase expression is elevated in leukemia and prostate cancer. Accordingly, we employed a structure-based hierarchical virtual screening approach to identify potential unknown Pim-1 kinase activity for existing drugs. Among the LOPAC library of pharmacologically active compounds, one top-ranked drug molecule thioridazine, a well-known antipsychotic agent which exerted its biological function as a dopamine receptor antagonist, showed low micromolar activity in the Pim-1 enzymatic assay. We determined the co-crystal structure of thioridazine bound with Pim-1 kinase, and defined the key elements of the pharmacophore by analyzing the structure-activity relationship of thioridazine analogues. In addition, we also assessed our pharmacophore by successfully predicting the Pim-1 activity of the selective Akt inhibitor, 10-DEBC. Our discovery of the unknown Pim-1 inhibitory activity of thioridazine and 10-DEBC might provide novel insights into understanding their molecular mechanism of action, and inspire the computation-driven multiple-target drug discovery.
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