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ID: ALA4342488

Journal: ACS Med Chem Lett

Title: Structure-Activity Relationship Study of Covalent Pan-phosphatidylinositol 5-Phosphate 4-Kinase Inhibitors.

Authors: Manz TD, Sivakumaren SC, Yasgar A, Hall MD, Davis MI, Seo HS, Card JD, Ficarro SB, Shim H, Marto JA, Dhe-Paganon S, Sasaki AT, Boxer MB, Simeonov A, Cantley LC, Shen M, Zhang T, Ferguson FM, Gray NS.

Abstract: Phosphatidylinositol 5-phosphate 4-kinases (PI5P4Ks) are important molecular players in a variety of diseases, such as cancer. Currently available PI5P4K inhibitors are reversible small molecules, which may lack selectivity and sufficient cellular on-target activity. In this study, we present a new class of covalent pan-PI5P4K inhibitors with potent biochemical and cellular activity. Our designs are based on THZ-P1-2, a covalent PI5P4K inhibitor previously developed in our lab. Here, we report further structure-guided optimization and structure-activity relationship (SAR) study of this scaffold, resulting in compound 30, which retained biochemical and cellular potency, while demonstrating a significantly improved selectivity profile. Furthermore, we confirm that the inhibitors show efficient binding affinity in the context of HEK 293T cells using isothermal CETSA methods. Taken together, compound 30 represents a highly selective pan-PI5P4K covalent lead molecule.

CiteXplore: 32184968

DOI: 10.1021/acsmedchemlett.9b00402