CellEKT: A Robust Chemical Proteomics Workflow to Profile Cellular Target Engagement of Kinase Inhibitors.

ABSTRACT: The human genome encodes 518 protein kinases that are pivotal for drug discovery in various therapeutic areas, such as cancer and autoimmune disorders. The majority of kinase inhibitors target the conserved ATP-binding pocket, making it difficult to develop selective inhibitors. To characterize and prioritize kinase-inhibiting drug candidates, efficient methods are desired to determine target engagement (TE) across the cellular kinome. In this study, we present CellEKT (Cellular Endogenous Kinase Targeting), an optimized and robust chemical proteomics platform for investigating cellular TE of endogenously expressed kinases using the sulfonyl fluoride-based probe XO44 and two new probes ALX005 and ALX011. The optimized workflow enabled the determination of the kinome interaction landscape o

SUBMITTER: Ruegger J 

PROVIDER: S-EPMC12172290 | biostudies-literature | 2025 Jun

REPOSITORIES: biostudies-literature