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BAY-850 is an inhibitor of the ATPase family AAA domain-containing protein 2 (ATAD2; IC50 = 22 nM in a time-resolved FRET assay using a tetra-acetylated histone H4 peptide).1 It is selective for ATAD2 over a panel of 32 bromodomain family proteins, including ATAD2B, a panel of 354 kinases, and a panel of 25 G protein-coupled receptors (GPCRs) at 1 µM. BAY-850 induces dimerization of ATAD2 in a concentration-dependent manner in a cell-free assay and inhibits the ATAD2-chromatin interaction in MCF-7 breast cancer cells in a fluorescence recovery after photobleaching (FRAP) assay. It induces apoptosis and cell cycle arrest in, and inhibits proliferation, invasion, and migration of, PA-1 and SKOV3 ovarian cancer cells when used at a concentration of 5 µM.2 BAY-850 (20 mg/kg) reduces tumor volume and the percentage of lung metastases in a SKOV3 mouse xenograft model. See the Structural Genomics Consortium (SGC) website for more information.
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1. Isoform-
2. ATAD2 is a driver and a therapeutic target in ovarian cancer that functions by upregulating CENPE. Cell Death Dis. 14(7), 456 (2023).