title: Identification and characterization of small-molecule inhibitors of lysine acetyltransferases.
abstract: Lysine acetyltransferases (KATs) acetylate various proteins including histones, transcription factors, metabolic enzymes, and other cellular substrates. Protein acetylation significantly impacts protein stability and function. Certain KATs such as p300 (KAT3B) are overexpressed in cancer cells and are linked to tumor progression and drug resistance. Thus, pharmacologic inhibition of KATs represents a new strategy for cancer therapy. Quantitative biochemical assays of KAT enzymatic activity have been developed and adapted for high-throughput screens of small-molecule compounds to discover specific KAT inhibitors. Such compounds are useful probes for understanding the cellular functions of these critical enzymes and importantly, they may be further developed as anticancer therapeutics. Here we describe a fluorescence-based KAT activity assay and cell-based validation of KAT inhibition by small-molecule compounds.
authors.affiliation: Department of Anatomy and Cell Biology, UF Health Cancer Center, UF Genetics Institute, University of Florida College of Medicine, Room B1-014, 1333 Center Drive, Gainesville, FL, 32610-0235, USA, dliao@ufl.edu.
authors.forename: Daiqing
authors.initials: D
authors.lastname: Liao
mesh_terms: D000595:Amino Acid Sequence; D055808:Drug Discovery / Q000379:methods*; D057075:Enzyme Assays; D004791:Enzyme Inhibitors / Q000494:pharmacology*; D045325:HCT116 Cells; D006801:Humans; D008239:Lysine / Q000378:metabolism*; D008969:Molecular Sequence Data; D054852:Small Molecule Libraries / Q000494:pharmacology*; D013050:Spectrometry, Fluorescence; D050880:p300-CBP Transcription Factors / Q000037:antagonists & inhibitors* / Q000378:metabolism; D000099224:p300-CBP-Associated Factor
chemical_list: D004791:Enzyme Inhibitors; D008239:Lysine; D054852:Small Molecule Libraries; D050880:p300-CBP Transcription Factors; D000099224:p300-CBP-Associated Factor