title: Discovery of novel SERCA inhibitors by virtual screening of a large compound library.
abstract: Two screening protocols based on recursive partitioning and computational ligand docking methodologies, respectively, were employed for virtual screens of a compound library with 345,000 entries for novel inhibitors of the enzyme sarco/endoplasmic reticulum calcium ATPase (SERCA), a potential target for cancer chemotherapy. A total of 72 compounds that were predicted to be potential inhibitors of SERCA were tested in bioassays and 17 displayed inhibitory potencies at concentrations below 100 μM. The majority of these inhibitors were composed of two phenyl rings tethered to each other by a short link of one to three atoms. Putative interactions between SERCA and the inhibitors were identified by inspection of docking-predicted poses and some of the structural features required for effective SERCA inhibition were determined by analysis of the classification pattern employed by the recursive partitioning models.
authors.affiliation: Department of Chemistry, Northern Kentucky University, Highland Heights, KY 41099-1905, USA.
authors.forename: Christopher
authors.initials: C
authors.lastname: Elam
authors.forename: Michael
authors.initials: M
authors.lastname: Lape
authors.forename: Joel
authors.initials: J
authors.lastname: Deye
authors.forename: Jodie
authors.initials: J
authors.lastname: Zultowsky
authors.forename: David T
authors.initials: DT
authors.lastname: Stanton
authors.forename: Stefan
authors.initials: S
authors.lastname: Paula
mesh_terms: D018360:Crystallography, X-Ray; D055808:Drug Discovery; D004789:Enzyme Activation / Q000187:drug effects; D004791:Enzyme Inhibitors / Q000138:chemical synthesis / Q000737:chemistry / Q000494:pharmacology*; D057166:High-Throughput Screening Assays; D008958:Models, Molecular; D015394:Molecular Structure; D053498:Sarcoplasmic Reticulum Calcium-Transporting ATPases / Q000037:antagonists & inhibitors*; D054852:Small Molecule Libraries; D013237:Stereoisomerism; D013329:Structure-Activity Relationship
chemical_list: D004791:Enzyme Inhibitors; D054852:Small Molecule Libraries; D053498:Sarcoplasmic Reticulum Calcium-Transporting ATPases