lovingscience/chembl-v37-raw-activities huggingface dataset:
Compound (SMILES): Cc1cc2ncnn2cc1-c1[nH]c2ccc(C3CCN(Cc4ncccn4)CC3)cc2c1C(C)C
InChIKey: RWMQPRYZYFCAMF-UHFFFAOYSA-N
Target: Toll-like receptor 9 (SINGLE PROTEIN), Homo sapiens
UniProt: Q9NR96
Assay: TLR7/8/9 Inhibition Reporter Assay: HEK-Blue-cells (Invivogen) overexpressing human TLR7, TLR8 or TLR9 receptors were used for screening inhibitors of these receptors using an inducible SEAP (secreted embryonic alkaline phosphatase) reporter gene under the control of the IFN-β minimal promoter fused to five NF-κB and AP-1-binding sites. Briefly, cells are seeded into Greiner 384 well plates (15000 cells per well for TLR7, 20,000 for TLR8 and 25,000 for TLR9) and then treated with test compounds in DMSO to yield a final dose response concentration range of 0.05 nM-50 μM. After a 30 minute compound pre-treatment at room temperature, the cells are then stimulated with a TLR7 ligand (gardiquimod at a final concentration of 7.5 μM), TLR8 ligand (R848 at a final concentration of 15.9 μM) or TLR9 ligand (ODN2006 at a final concentration of 5 nM) to activate NF-κB and AP-1 which induce the production of SEAP. After a 22 hour incubation at 37° C., 5% CO2, SEAP levels are determined with the addition of HEK-Blue Detection reagent (Invivogen), a cell culture medium that allows for detection of SEAP, according to manufacturer's specifications. The percent inhibition is determined as the % reduction in the HEK-Blue signal present in wells treated with agonist plus DMSO alone compared to wells treated with a known inhibitor.
Measurement: IC50 = 10042 nM (pChEMBL 5)
Descriptors: MW 465.61, ALogP 5.48, HBA 6, HBD 1, PSA 75, QED 0.37
Compound (SMILES): Nc1ncc(-c2cc(N3CCOCC3)cc(S(=O)(=O)C3CCOCC3)c2)cn1
InChIKey: MNXDJZUAFAEDPV-UHFFFAOYSA-N
Target: Serine/threonine-protein kinase mTOR (SINGLE PROTEIN), Homo sapiens
UniProt: P42345
Assay: mTor Assay Protocol: The substrate was prepared in base reaction buffer (20 mM Hepes (pH 7.5), 10 mM MgCl2, 1 mM EGTA, 0.02% Brij35, 0.02 mg/ml BSA, 0.1 mM Na3VO4, 2 mM DTT, 1% DMSO), and required cofactors were added to the substrate solution. The mTor kinase was delivered into the substrate solution, and the solution was gently mixed. Testing compounds were dissolved in 100% DMSO to specific concentration. The serial dilution was conducted by Integra Viaflo Assist in DMSO. The compounds were delivered into the kinase reaction mixture by Acoustic technology (Echo550; nanoliter range), and the reaction mixture was incubated for 20 min at room temperature. Then, 33P-ATP (Specific activity 10 μCi/μl) was delivered into the reaction mixture to initiate the reaction. The reaction mixture was incubated for 2 hours at room temperature. Radioactivity was detected by a filter-binding method. Kinase activity data were expressed as the percent remaining kinase activity in test samples compared to vehicle (dimethyl sulfoxide) reactions. IC50 values and curve fits were obtained using Prism (GraphPad Software).
Measurement: IC50 = 1870 nM (pChEMBL 5.730000019073486)
Descriptors: MW 404.49, ALogP 1.52, HBA 8, HBD 1, PSA 107.64, QED 0.82
Compound (SMILES): CN1CCC(C(=O)Nc2cc3cc(-c4nnc(N(C)C)o4)ccc3cn2)CC1
InChIKey: MQTHZGXUMDEJOB-UHFFFAOYSA-N
Target: Glycogen synthase kinase-3 beta (SINGLE PROTEIN), Homo sapiens
UniProt: P49841
Assay: The screening assay for GSK3beta kinase activity: Each compound is dissolved in DMSO as a 10 mM stock and used to prepare compound source plates. Serial dilution (1:3, 11-point dose-response curves from 10 μM to 0.0003 M) and compound transfer was performed using the ECHO 550 (Labcyte, Sunnyvale, Calif.) into 1536-well black-walled round bottom plates (Corning).The GSK3β kinase assay is run using the Ser/Thr 09 peptide Z-lyte assay kit according to manufacturer's instructions (Life Technologiesa Division of Thermo-Fisher). This is a non-radioactive assay using fluorescence resonance energy transfer (FRET) between coumarin and fluorescein to detect kinase activity which is represented as ratio of coumarin emission/fluorescein emission.Briefly, recombinant GSK3β kinase, ATP and Ser/Thr peptide 09 are prepared in 1× Kinase buffer to final concentrations of 0.04 μg/mL, 46 μM, and 4 μM respectively. The mixture is allowed to incubate with the representative compounds for one hour at room temperature. All reactions were performed in duplicate. Unphosphorylated (0% Control) and phosphorylated (100% control) forms of Ser/Thr 18 serve as control reactions.After incubation, diluted Development Buffer is added to the reaction and allowed to further incubate for one hour at room temperature. The plate is read at Ex 400 Em 455 to detect the coumarin signal and Ex 400 Em 520 to measure the signal (EnVision Multilabel Plate Reader, PerkinElmer).The Emission ratio (Em) is calculated as a ratio of the coumarin (C) emission signal (at 445 nm)/Fluorescein (F) emission signal (at 520 nm). The percent phosphorylation is then calculated using the following formula: [1−((Em ratio×F100%)−C100%)/((C0%−C100%)+(Em ratio×(F100%−F0%)))].Dose-response curves are generated and inhibitory concentration (IC50) values are calculated using non-linear regression curve fit in the Dotmatics' Studies Software (Bishops Stortford, UK).
Measurement: EC50 = 11 nM (pChEMBL 7.960000038146973)
Descriptors: MW 380.45, ALogP 2.63, HBA 7, HBD 1, PSA 87.39, QED 0.74
Compound (SMILES): C[C@@H]1CN(c2cnc(C(F)(F)F)nc2)CCN1C(=O)NCCC1CCN(Cc2ccccc2)CC1
InChIKey: LXYLIBCHIFQHSI-LJQANCHMSA-N
Target: Muscarinic acetylcholine receptor M2 (SINGLE PROTEIN), Homo sapiens
UniProt: P08172
Assay: Binding Assay: Binding affinity (Ki) of compounds was measured by inhibition of radioligand binding to membranes from CHO cells expressing human M1, M2, M3, M4 and M5 receptors. Membranes were prepared by nitrogen cavitation and differential centrifugation as previously described (Hoare et al., Mol. Pharmacol. 2003 March; 63(3): 751-65). The radioligand employed was tritiated N-methylscopolamine, used at a concentration of 1.5 nM. A dose-response of twelve concentrations of compound was used, ranging from 10 Î¼M to 32 Î¼M. The assay buffer was 50 mM HEPES, 100 mM NaCl, 5 mM MgCl2, 1 mM ethylenediaminetetraacetic acid, pH-adjusted to pH 7.4.
Measurement: Ki = 55 nM (pChEMBL 7.260000228881836)
Descriptors: MW 490.57, ALogP 4.02, HBA 5, HBD 1, PSA 64.6, QED 0.66
Compound (SMILES): Cc1cc(-c2ccc(C(=O)[C@@H]3CCCC[C@H]3C(=O)Nc3cn(C)nc3S(N)(=O)=O)cc2)[nH]n1
InChIKey: TZQFPWWHWMTHNA-IAGOWNOFSA-N
Target: Flap endonuclease 1 (SINGLE PROTEIN), Homo sapiens
UniProt: P39748
Assay: Binding Assay: Compounds were tested in a competition binding assay using 3H-MK591 as tracer. (Preparation of MK-591 is described in Bioorg. Med. Chem. Lett. 1999, 9, 2391). A 100,000×g pellet from COS-7 cells stably transfected with a plasmid expressing human ALOX5AP was the source of FLAP. Membrane pellets were resuspended in buffer (100 mM Tris-HCl, 0.05% Tween-20, 140 mM NaCl, 2 mM EDTA, 0.5 mM DTT, 5% Glycerol, pH 7.5) to give a final protein concentration of 12 mg/mL (2 μg/well). To perform assays, 1.4 μL compounds were dispensed into 96-well plates in 3-fold dilution series in triplicate. 84 μL radioligand (25000 CPM, 2 nM final concentration in assay) was then added followed by 84 μL membrane suspension and incubation at rt for 60 min. Following filtration, filter plates were dried 12 h at RT (or 50° C. for 1 hour). 50 μL scintillant was then added, the filterplates were sealed and radioactivity was measured in a microbeta counter. Specific binding was defined as total binding minus non-specific binding. Total binding was defined as 3H-MK591 bound to membranes in the absence of competitor, non-specific binding was defined as 3H-MK591 in the presence of 0.1 mM MK-591.
Measurement: IC50 = 270 nM (pChEMBL 6.570000171661377)
Descriptors: MW 470.56, ALogP 2.39, HBA 7, HBD 3, PSA 152.83, QED 0.47
Compound (SMILES): Cc1ccccc1-c1nc2ccccc2cc1Cn1nc(-c2cccc(O)c2)c2c(N)ncnc21
InChIKey: XPQVHHHNWIWKLM-UHFFFAOYSA-N
Target: Phosphatidylinositol 4-phosphate 3-kinase C2 domain-containing subunit beta (SINGLE PROTEIN), Homo sapiens
UniProt: O00750
Assay: Inhibition Assay: Class I PI3-Ks can be either purchased (p110α/p85α, p110β/p85α, p110δ/p85α from Upstate, and p110γ from Sigma) or expressed as previously described (Knight et al., 2004). IC50 values are measured using either a standard TLC assay for lipid kinase activity (described below) or a high-throughput membrane capture assay. Kinase reactions are performed by preparing a reaction mixture containing kinase, inhibitor (2% DMSO final concentration), buffer (25 mM HEPES, pH 7.4, 10 mM MgCl2), and freshly sonicated phosphatidylinositol (100 μg/ml). Reactions are initiated by the addition of ATP containing 10 μCi of γ-32P-ATP to a final concentration 10 or 100 μM and allowed to proceed for 5 minutes at room temperature. For TLC analysis, reactions are then terminated by the addition of 105 l 1N HCl followed by 160 μl CHCl3:MeOH (1:1). The biphasic mixture is vortexed, briefly centrifuged, and the organic phase is transferred to a new tube using a gel loading pipette tip precoated with CHCl3. This extract is spotted on TLC plates and developed for 3-4 hours in a 65:35 solution of n-propanol:1M acetic acid. The TLC plates are then dried, exposed to a phosphorimager screen (Storm, Amersham), and quantitated. For each compound, kinase activity is measured at 10-12 inhibitor concentrations representing two-fold dilutions from the highest concentration tested (typically, 200 μM). For compounds showing significant activity, IC50 determinations are repeated two to four times, and the reported value is the average of these independent measurements.
Measurement: IC50 > 1000 nM (pChEMBL 6)
Descriptors: MW 458.53, ALogP 5.35, HBA 7, HBD 2, PSA 102.74, QED 0.37
Compound (SMILES): O=c1cc(N2CCSCC2)oc2c(Br)csc12
InChIKey: DCGXJMBXXVDWAW-UHFFFAOYSA-N
Target: Phosphatidylinositol 4,5-bisphosphate 3-kinase catalytic subunit alpha isoform (SINGLE PROTEIN), Homo sapiens
UniProt: P42336
Assay: Inhibition Assay: Several TP Scaffold compounds were tested for inhibition activity against isoforms of PI3K (alpha, beta, gamma, and delta isoforms) and the bromodomain protein BRD4 at regions 1 (BRD4-1) and 2 (BRD4-2).
Measurement: IC50 = 1720 nM (pChEMBL 5.760000228881836)
Descriptors: MW 332.24, ALogP 3.17, HBA 5, HBD 0, PSA 33.45, QED 0.8
Compound (SMILES): Cn1cc(-c2cc3c(N4CC(C(=O)Nc5ccc(Cl)cc5)C4)ncnn3c2)cn1
InChIKey: DVBDMQDMEYMQAG-UHFFFAOYSA-N
Target: Mast/stem cell growth factor receptor Kit (SINGLE PROTEIN), Homo sapiens
UniProt: P10721
Assay: Autophosphorylation Assay: 10,000 HMC1.2 cells were incubated in 22 ul culture media (phenol-red free IMDM, no serum) in each well of a 384-well plate and serum starved overnight in a tissue culture incubator (5% CO2, 37° C.). A 10-point dose concentration series of compound (25 uM-95.4 pM) were then added to the cells in a volume of 3.1 ul to each well (0.25% DMSO final concentration). After 90 minutes, 6 ul of 5× AlphaLISA Lysis Buffer (Perkin Elmer) supplemented with a protease and phosphatase inhibitor cocktail (Cell Signaling Technologies) was added to each well and shaken at 450 rpm for 15 minutes at 4° C. 10 ul of phospho-Y719 c-Kit and total c-Kit antibodies (15 nM final concentration, Cell Signaling Technologies) and 50 ug/ml AlphaLISA rabbit acceptor beads (Perkin Elmer) were added to each well and shaken at 300 rpm at room temperature for 2 hours. 10 ul of 100 ug/ml streptavidin donor beads (Perkin Elmer) were added to each well, blocked from light with aluminum adhesive and shaken at 300 rpm at room temperature for 2 hours. Fluorescence signal was obtained on Envision (Perkin Elmer) by AlphaScreen 384 well HTS protocol.
Measurement: IC50 = 550 nM (pChEMBL 6.260000228881836)
Descriptors: MW 407.87, ALogP 2.86, HBA 7, HBD 1, PSA 80.35, QED 0.56
Compound (SMILES): Cc1cccc(-c2ccc([C@H]3C[C@@H]3N)cn2)c1
InChIKey: BWUCCJFAHBMAQD-KGLIPLIRSA-N
Target: Lysine-specific histone demethylase 1A (SINGLE PROTEIN), Homo sapiens
UniProt: O60341
Assay: LSD1 Assay: Briefly, a fixed amount of LSD1 was incubated on ice for 15 minutes, in the absence and/or in the presence of various concentrations of inhibitor (e.g., from 0 to 75 μM, depending on the inhibitor strength). Tranylcypromine (Biomol International) was used as a control for inhibition. Within the experiment, each concentration of inhibitor was tested in triplicate. After leaving the enzyme interacting with the inhibitor, 12.5 μM of di-methylated H3-K4 peptide was added to each reaction and the experiment was left for 1 hour at 37° C. in the dark. The enzymatic reactions were set up in a 50 mM sodium phosphate, pH 7.4 buffer. At the end of the incubation, Amplex® Red reagent and horseradish peroxidase (HPR) solution were added to the reaction according to the recommendations provided by the supplier (Invitrogen), and left to incubate for 30 extra minutes at room temperature in the dark. A 1 μM H2O2 solution was used as a control of the kit efficiency. The conversion of the Amplex® Red reagent to resorufin due to the presence of H2O2 in the assay, was monitored by fluorescence (excitation at 540 nm, emission at 590 nm) using a microplate reader (Infinite 200, Tecan).
Measurement: Ki = 550 nM (pChEMBL 6.260000228881836)
Descriptors: MW 224.31, ALogP 2.87, HBA 2, HBD 1, PSA 38.91, QED 0.85
Compound (SMILES): Cc1cc2ncnn2cc1-c1[nH]c2ccc(C3CCN(C4COC4)CC3)cc2c1C(C)C
InChIKey: RBIKXAZCDCNBJD-UHFFFAOYSA-N
Target: Toll-like receptor 9 (SINGLE PROTEIN), Homo sapiens
UniProt: Q9NR96
Assay: TLR7/8/9 Inhibition Reporter Assay: HEK-Blue-cells (Invivogen) overexpressing human TLR7, TLR8 or TLR9 receptors were used for screening inhibitors of these receptors using an inducible SEAP (secreted embryonic alkaline phosphatase) reporter gene under the control of the IFN-β minimal promoter fused to five NF-κB and AP-1-binding sites. Briefly, cells are seeded into Greiner 384 well plates (15000 cells per well for TLR7, 20,000 for TLR8 and 25,000 for TLR9) and then treated with test compounds in DMSO to yield a final dose response concentration range of 0.05 nM-50 μM. After a 30 minute compound pre-treatment at room temperature, the cells are then stimulated with a TLR7 ligand (gardiquimod at a final concentration of 7.5 μM), TLR8 ligand (R848 at a final concentration of 15.9 μM) or TLR9 ligand (ODN2006 at a final concentration of 5 nM) to activate NF-κB and AP-1 which induce the production of SEAP. After a 22 hour incubation at 37° C., 5% CO2, SEAP levels are determined with the addition of HEK-Blue Detection reagent (Invivogen), a cell culture medium that allows for detection of SEAP, according to manufacturer's specifications. The percent inhibition is determined as the % reduction in the HEK-Blue signal present in wells treated with agonist plus DMSO alone compared to wells treated with a known inhibitor.
Measurement: IC50 = 41305 nM (pChEMBL 4.380000114440918)
Descriptors: MW 429.57, ALogP 4.89, HBA 5, HBD 1, PSA 58.45, QED 0.5
Compound (SMILES): CCOc1cc(-c2cnc(N3CC4CC(C3)N4Cc3cnc(OC)c(Cl)c3)cn2)c2c(C#N)cnn2c1
InChIKey: FCGFEYCQDWMJLK-UHFFFAOYSA-N
Target: Proto-oncogene tyrosine-protein kinase receptor Ret (SINGLE PROTEIN), Homo sapiens
UniProt: P07949
Assay: RET Enzyme Assay: Compounds of Formula I were screened for their ability to inhibit wildtype and V804M mutant RET kinase using CisBio's HTRF® KinEASE¿-TK assay technology. Briefly, N-terminal GST tagged recombinant human RET cytoplasmic domain (aa 658-end) from Eurofins (0.25 nM RET; Catalog No. 14-570M) or N-terminal GST tagged recombinant human V804M mutant RET cytoplasmic domain (aa 658-end) from Millipore (0.25 nM enzyme; Catalog No. 14-760) was incubated with 250 nM TK-substrate biotin (CisBio, part of Catalog No. 62TK0PEC) and 1 mM ATP along with test compound in a buffer consisting of 25 mM HEPES pH 7.4, 10 mM MgCl2, 0.01% Triton X-100, and 2% DMSO in a volume of 8 μL. Compounds were typically prepared in a threefold serial dilution in DMSO and added to the assay to give the appropriate final concentration. After a 30-minute incubation at 22° C., the reaction was quenched by adding 8 μL of quench solution containing 31.25 nM Sa-XL665 and 1×TK-ab-Cryptate in HTRF detection buffer (all from CisBio, part of Cat. No. 62TK0PEC). After a 1 hour incubation at 22° C., the extent of reaction was determined using a PerkinElmer EnVision multimode plate reader via HTRF dual wavelength detection, and the percent of control (POC) was calculated using a ratiometric emission factor. 100 POC was determined using no test compounds and 0 POC was determined using pre-quenched control reactions. The POC values were fit to a 4 parameter logistic curve, and the IC50 is defined as the concentration of inhibitor at which the POC equals 50 for the fitted curve.
Measurement: IC50 = 1136 nM (pChEMBL 5.949999809265137)
Descriptors: MW 516.99, ALogP 3.58, HBA 10, HBD 0, PSA 104.7, QED 0.36
Compound (SMILES): COCc1ccc(-c2cc3nc(CCc4cc(OC)cc(OC)c4)cnc3[nH]2)cc1
InChIKey: FFJIWEUDRSRFOI-UHFFFAOYSA-N
Target: Fibroblast growth factor receptor 3 (SINGLE PROTEIN), Homo sapiens
UniProt: P22607
Assay: Enzymatic Assay: The inhibitor potency of compounds was measured in an enzyme assay that measures peptide phosphorylation using FRET measurements to detect product formation. Inhibitors were serially diluted in DMSO and a volume of 0.5 μL was transferred to the wells of a 384-well plate. For FGFR3, a 10 μL volume of FGFR3 enzyme (Millipore) diluted in assay buffer (50 mM HEPES, 10 mM MgCl2, 1 mM EGTA, 0.01% Tween-20, 5 mM DTT, pH 7.5) was added to the plate and pre-incubated for 5-10 minutes. Appropriate controls (enzyme blank and enzyme with no inhibitor) were included on the plate. The assay was initiated by the addition of a 10 μL solution containing biotinylated EQEDEPEGDYFEWLE peptide substrate (SEQ ID NO: 1) and ATP (final concentrations of 500 nM and 140 μM respectively) in assay buffer to the wells. The plate was incubated at 25° C. for 1 hr. The reactions were ended with the addition of 10 μL/well of quench solution (50 mM Tris, 150 mM NaCl, 0.5 mg/mL BSA, pH 7.8; added fresh 30 mM EDTA and Perkin Elmer Lance Reagents for HTRF at 3.75 nM Eu-antibody PY20 and 180 nM APC-Streptavidin). The plate was allowed to equilibrate for 1 hr before scanning the wells on a PheraStar plate reader.FGFR1 and FGFR2 were measured under equivalent conditions with the following changes in enzyme and ATP concentrations: FGFR1, 0.02 nM and 210 μM, respectively and FGFR2, 0.01 nM and 100 μM, respectively.
Measurement: IC50 < 100 nM (pChEMBL 7)
Descriptors: MW 403.48, ALogP 4.57, HBA 5, HBD 1, PSA 69.26, QED 0.47
Compound (SMILES): CN1CCN(c2nc3ccccc3cc2Cn2nc(-c3ccc4cc(N)sc4c3)c3c(N)ccnc32)CC1
InChIKey: ANRBNTMAAZLQLH-UHFFFAOYSA-N
Target: Phosphatidylinositol 4-phosphate 3-kinase C2 domain-containing subunit beta (SINGLE PROTEIN), Homo sapiens
UniProt: O00750
Assay: Inhibition Assay: Class I PI3-Ks can be either purchased (p110α/p85α, p110β/p85α, p110δ/p85α from Upstate, and p110γ from Sigma) or expressed as previously described (Knight et al., 2004). IC50 values are measured using either a standard TLC assay for lipid kinase activity (described below) or a high-throughput membrane capture assay. Kinase reactions are performed by preparing a reaction mixture containing kinase, inhibitor (2% DMSO final concentration), buffer (25 mM HEPES, pH 7.4, 10 mM MgCl2), and freshly sonicated phosphatidylinositol (100 μg/ml). Reactions are initiated by the addition of ATP containing 10 μCi of γ-32P-ATP to a final concentration 10 or 100 μM and allowed to proceed for 5 minutes at room temperature. For TLC analysis, reactions are then terminated by the addition of 105 l 1N HCl followed by 160 μl CHCl3:MeOH (1:1). The biphasic mixture is vortexed, briefly centrifuged, and the organic phase is transferred to a new tube using a gel loading pipette tip precoated with CHCl3. This extract is spotted on TLC plates and developed for 3-4 hours in a 65:35 solution of n-propanol:1M acetic acid. The TLC plates are then dried, exposed to a phosphorimager screen (Storm, Amersham), and quantitated. For each compound, kinase activity is measured at 10-12 inhibitor concentrations representing two-fold dilutions from the highest concentration tested (typically, 200 μM). For compounds showing significant activity, IC50 determinations are repeated two to four times, and the reported value is the average of these independent measurements.
Measurement: IC50 < 100 nM (pChEMBL 7)
Descriptors: MW 520.67, ALogP 4.83, HBA 9, HBD 2, PSA 102.12, QED 0.34
Compound (SMILES): CC(C)(C)c1cc(NC(=O)Nc2cccc(Sc3ncnc4cc5c(cc34)OCCO5)c2)no1
InChIKey: YDQOTXXRMYACON-UHFFFAOYSA-N
Target: RAF proto-oncogene serine/threonine-protein kinase (SINGLE PROTEIN), Homo sapiens
UniProt: P04049
Assay: Competition Binding Assay: Competition binding assays used herein were developed, validated and performed as described in Fabian et al., Nature Biotechnology 2005, 23, 329-336. Kinases were produced as fusions to T7 phage (See, Fabian et al. or WO04/015142) or alternatively, the kinases were expressed in HEK-293 cells and subsequently tagged with DNA for PCR detection (See, WO08/005310). For the binding assays, streptavidin-coated magnetic beads were treated with biotinylated affinity ligands for 30 min at room temperature to generate affinity resins. The liganded beads were blocked with excess biotin and washed with blocking buffer (SeaBlock (Pierce), 1% BSA, 0.05% Tween 20, 1 mM DTT) to remove unbound ligand and to reduce non-specific binding. Binding reactions were assembled by combining kinase, liganded affinity beads, and test compounds in 1× binding buffer (20% SeaBlock, 0.17×PBS, 0.05% Tween 20, 6 mM DTT). Test compounds were prepared as 100× stocks in DMSO and rapidly diluted into the aqueous environment. DMSO was added to control assays lacking a test compound. Primary screen interactions were performed in polypropylene 384-well plates in a final volume of 34 μL, while Kd determinations were performed in polystyrene 96-well plates in a final volume of 135 μL. The assay plates were incubated at room temperature with shaking for 1 hour, long enough for binding reactions to reach equilibrium, and the affinity beads were washed extensively with wash buffer (1×PBS, 0.05% Tween 20) to remove unbound protein. The beads were then resuspended in elution buffer (1×PBS, 0.05% Tween 20, 2 μM non-biotinylated affinity ligand) and incubated at room temperature with shaking for 30 min. The kinase concentration in the eluates was measured by quantitative PCR. Each kinase was tested individually against each compound. KdS were determined using eleven serial threefold dilutions.
Measurement: Kd > 1000 nM (pChEMBL 6)
Descriptors: MW 477.55, ALogP 5.48, HBA 8, HBD 2, PSA 111.4, QED 0.37
Compound (SMILES): Clc1cnc(NCCc2ccncc2)nc1-n1cnc2ccccc21
InChIKey: AFKOJENZZZUAJE-UHFFFAOYSA-N
Target: MAP kinase-interacting serine/threonine-protein kinase 1 (SINGLE PROTEIN), Homo sapiens
UniProt: Q9BUB5
Assay: Inhibition Assay: The synthesized compounds then were tested for inhibition of the kinase activity (IC50) of Mnk1 and/or Mnk2 using the ADP monitoring assay for kinases described in Zegzouti, H.; Zdanovskaia, M.; Hsiao, K.; Goueli, S. A., ADP-Glo: A Bioluminescent and homogeneous ADP monitoring assay for kinases.
Measurement: IC50 = 5500 nM (pChEMBL 5.260000228881836)
Descriptors: MW 350.81, ALogP 3.52, HBA 6, HBD 1, PSA 68.52, QED 0.6
Compound (SMILES): COc1cc2ncnc(Oc3cc(NC(=O)Nc4cc(C(C)(CF)CF)on4)ccc3F)c2cc1OC
InChIKey: QBPFTEHJMUAEBL-UHFFFAOYSA-N
Target: RAF proto-oncogene serine/threonine-protein kinase (SINGLE PROTEIN), Homo sapiens
UniProt: P04049
Assay: Competition Binding Assay: Competition binding assays used herein were developed, validated and performed as described in Fabian et al., Nature Biotechnology 2005, 23, 329-336. Kinases were produced as fusions to T7 phage (See, Fabian et al. or WO04/015142) or alternatively, the kinases were expressed in HEK-293 cells and subsequently tagged with DNA for PCR detection (See, WO08/005310). For the binding assays, streptavidin-coated magnetic beads were treated with biotinylated affinity ligands for 30 min at room temperature to generate affinity resins. The liganded beads were blocked with excess biotin and washed with blocking buffer (SeaBlock (Pierce), 1% BSA, 0.05% Tween 20, 1 mM DTT) to remove unbound ligand and to reduce non-specific binding. Binding reactions were assembled by combining kinase, liganded affinity beads, and test compounds in 1× binding buffer (20% SeaBlock, 0.17×PBS, 0.05% Tween 20, 6 mM DTT). Test compounds were prepared as 100× stocks in DMSO and rapidly diluted into the aqueous environment. DMSO was added to control assays lacking a test compound. Primary screen interactions were performed in polypropylene 384-well plates in a final volume of 34 μL, while Kd determinations were performed in polystyrene 96-well plates in a final volume of 135 μL. The assay plates were incubated at room temperature with shaking for 1 hour, long enough for binding reactions to reach equilibrium, and the affinity beads were washed extensively with wash buffer (1×PBS, 0.05% Tween 20) to remove unbound protein. The beads were then resuspended in elution buffer (1×PBS, 0.05% Tween 20, 2 μM non-biotinylated affinity ligand) and incubated at room temperature with shaking for 30 min. The kinase concentration in the eluates was measured by quantitative PCR. Each kinase was tested individually against each compound. KdS were determined using eleven serial threefold dilutions.
Measurement: Kd < 250 nM (pChEMBL 6.6020002365112305)
Descriptors: MW 517.46, ALogP 5.41, HBA 8, HBD 2, PSA 120.63, QED 0.3
Compound (SMILES): COc1ccc([C@@H](C)Nc2nc(C(=O)NCc3ccc(OC)nc3)c3sccc3n2)cc1
InChIKey: ACZJVQXDTPYNAT-CQSZACIVSA-N
Target: Adenosine receptor A1 (SINGLE PROTEIN), Homo sapiens
UniProt: P30542
Assay: Activity Assay: Compounds (Adenosine Receptor modulators) and activity assay.
Measurement: IC50 > 500 nM (pChEMBL 6.301000118255615)
Descriptors: MW 449.54, ALogP 4.21, HBA 8, HBD 2, PSA 98.26, QED 0.42
Compound (SMILES): COc1ccc2c(c1)[C@]1(CC1c1ccc3c(-c4ccc(N5CCC(N(C)C)CC5)cc4)n[nH]c3c1)C(=O)N2
InChIKey: AGNNSNNILSKINY-VXPBITRUSA-N
Target: Aurora kinase B (SINGLE PROTEIN), Homo sapiens
UniProt: Q96GD4
Assay: Inhibition Assay: Aurora B inhibition was determined using the Z-Lyte assay kit from Invitrogen. The assay was performed using the recommended manufacturer's instructions with 128 μM ATP and 28 nM Aurora B (Invitrogen cat #PV3970). The % inhibition values were determined according to the manufacturer's directions and IC50 values were obtained using a non-linear 4 point logistic curve fit (XLfit4, IDBS)
Measurement: IC50 < 100 nM (pChEMBL 7)
Descriptors: MW 507.64, ALogP 5.15, HBA 5, HBD 2, PSA 73.49, QED 0.39
Compound (SMILES): C=CC(=O)N1CC[C@H](C(=O)N(C)[C@H](C(=O)N[C@H]2Cc3cc(O)cc(c3)-c3ccc4c(c3)c(c(-c3ccc(N5CCN(C)CC5)nc3)n4CC)CC(C)(C)COC(=O)[C@@H]3CCCN(N3)C2=O)C(C)C)C1
InChIKey: XVSPAKDVFKRTHX-QIZIHUPCSA-N
Target: GTPase KRas (SINGLE PROTEIN), Homo sapiens
UniProt: P01116
Assay: Biochemical Assay: A variety of Ras proteins may be inhibited by compounds of the present invention (e.g., K-Ras, N-Ras, H-Ras, and mutants thereof at positions 12, 13 and 61, such as G12C, G12D, G12V, G12S, G13C, G13D, and Q61L, and others described herein). The purpose of this biochemical assay is to measure the ability of test compounds to covalently label nucleotide-loaded K-Ras isoforms. In assay buffer containing 12.5 mM HEPES pH 7.4, 75 mM NaCl, 1 mM MgCl2, 1 mM BME, 5 uM Cyclophilin A and 2 uM test compound, a 5 uM stock of GMP-PNP-loaded K-Ras (1-169) G12C is diluted 10-fold to yield a final concentration of 0.5 uM; with final sample volume being 100 uL. The sample is incubated at 25�� C. for a time period of up to 24 hours prior to quenching by the addition of 10 uL of 5% Formic Acid. Quenched samples are centrifuged at 15000 rpm for 15 minutes in a benchtop centrifuge before injecting a 10 uL aliquot onto a reverse phase C4 column and eluting into the mass spectrometer with an increasing acetonitrile gradient in the mobile phase. Analysis of raw data may be carried out using Waters MassLynx MS software, with % bound calculated from the deconvoluted protein peaks for labeled and unlabeled K-Ras.
Measurement: IC50 = 550 nM (pChEMBL 6.260000228881836)
Descriptors: MW 944.19, ALogP 5.01, HBA 12, HBD 3, PSA 172.89, QED 0.15
Compound (SMILES): Cc1c(-c2[nH]c3ccc(N4CCN(C(=O)CNC5CC5)C[C@@H]4C)nc3c2C(C)C)cn2ncnc2c1C
InChIKey: PFLWZILUIBRVSZ-KRWDZBQOSA-N
Target: Toll-like receptor 9 (SINGLE PROTEIN), Homo sapiens
UniProt: Q9NR96
Assay: TLR7/8/9 Inhibition Reporter Assays: HEK-Blue-cells (Invivogen) overexpressing human TLR7, TLR8 or TLR9 receptors were used for screening inhibitors of these receptors using an inducible SEAP (secreted embryonic alkaline phosphatase) reporter gene under the control of the IFN-β minimal promoter fused to five NF-κB and AP-1-binding sites. Briefly, cells are seeded into Greiner 384 well plates (15000 cells per well for TLR7, 20,000 for TLR8 and 25,000 for TLR9) and then treated with test compounds in DMSO to yield a final dose response concentration range of 0.05 nM-50 μM. After a 30 minute compound pre-treatment at room temperature, the cells are then stimulated with a TLR7 ligand (gardiquimod at a final concentration of 7.5 μM), TLR8 ligand (R848 at a final concentration of 15.9 μM) or TLR9 ligand (ODN2006 at a final concentration of 5 nM) to activate NF-κB and AP-1 which induce the production of SEAP. After a 22 hour incubation at 37° C., 5% CO2, SEAP levels are determined with the addition of HEK-Blue Detection reagent (Invivogen), a cell culture medium that allows for detection of SEAP, according to manufacturer's specifications. The percent inhibition is determined as the % reduction in the HEK-Blue signal present in wells treated with agonist plus DMSO alone compared to wells treated with a known inhibitor.
Measurement: IC50 = 15739 nM (pChEMBL 4.800000190734863)
Descriptors: MW 500.65, ALogP 3.8, HBA 7, HBD 2, PSA 94.45, QED 0.42
Compound (SMILES): COc1cc(-c2[nH]c3ccc(C4CCN(C5COC5)CC4)nc3c2C(C)C)cn2ncnc12
InChIKey: VTJAUPVZIWQLDY-UHFFFAOYSA-N
Target: Toll-like receptor 8 (SINGLE PROTEIN), Homo sapiens
UniProt: Q9NR97
Assay: TLR7/8/9 Inhibition Reporter Assays: HEK-Blue-cells (Invivogen) overexpressing human TLR7, TLR8 or TLR9 receptors were used for screening inhibitors of these receptors using an inducible SEAP (secreted embryonic alkaline phosphatase) reporter gene under the control of the IFN-β minimal promoter fused to five NF-κB and AP-1-binding sites. Briefly, cells are seeded into Greiner 384 well plates (15000 cells per well for TLR7, 20,000 for TLR8 and 25,000 for TLR9) and then treated with test compounds in DMSO to yield a final dose response concentration range of 0.05 nM-50 μM. After a 30 minute compound pre-treatment at room temperature, the cells are then stimulated with a TLR7 ligand (gardiquimod at a final concentration of 7.5 μM), TLR8 ligand (R848 at a final concentration of 15.9 μM) or TLR9 ligand (ODN2006 at a final concentration of 5 nM) to activate NF-κB and AP-1 which induce the production of SEAP. After a 22 hour incubation at 37° C., 5% CO2, SEAP levels are determined with the addition of HEK-Blue Detection reagent (Invivogen), a cell culture medium that allows for detection of SEAP, according to manufacturer's specifications. The percent inhibition is determined as the % reduction in the HEK-Blue signal present in wells treated with agonist plus DMSO alone compared to wells treated with a known inhibitor.
Measurement: IC50 = 8.6 nM (pChEMBL 8.069999694824219)
Descriptors: MW 446.56, ALogP 3.98, HBA 7, HBD 1, PSA 80.57, QED 0.5
Compound (SMILES): COc1cc(CCC(C)(C)N2Cc3cccc(C(=O)NCCO)c3C2)ccc1O
InChIKey: JNUAKGPTMPMPKV-UHFFFAOYSA-N
Target: Sigma intracellular receptor 2 (SINGLE PROTEIN), Homo sapiens
UniProt: Q5BJF2
Assay: Radioligand Binding Assay: Radioligand binding assays for Sigma-1 receptors and Sigma-2 receptors were carried out by a commercial contract research organization. For Sigma-1 binding, various concentrations of test compounds from 100 μM to 1 nM were used to displace 8 nM [3H](+)pentazocine from endogenous receptors on Jurkat cell membranes (Ganapathy M E et al. 1991, J Pharmacol. Exp. Ther. 289:251-260). 10 μM Haloperidol was used to define non-specific binding. For Sigma-2 receptors various concentrations of test compounds from 100 μM to 1 nM were used to displace 5 nM [3H] 1,3-Di-(2-tolyl)guanidine from endogenous receptors on membranes from rat cerebral cortex in the presence of 300 nM (+)pentazocine to mask Sigma-1 receptors. (Bowen W D, et al. 1993, Mol. Neuropharmcol 3:117-126). 10 μM Haloperidol was used to define non-specific binding. Reactions were terminated by rapid filtration through Whatman GF/C filters using a Brandel 12R cell harvester followed by two washes with ice-cold buffer. Radioactivity on the dried filter discs was measured using a liquid scintillation analyzer (Tri-Carb 2900TR; PerkinElmer Life and Analytical Sciences). The displacement curves were plotted and the Ki values of the test ligands for the receptor subtypes were determined using GraphPad Prism (GraphPad Software Inc., San Diego, Calif.). The percentage specific binding was determined by dividing the difference between total bound (disintegrations per minute) and nonspecific bound (disintegrations per minute) by the total bound (disintegrations per minute).
Measurement: Ki = 460 nM (pChEMBL 6.340000152587891)
Descriptors: MW 398.5, ALogP 2.85, HBA 5, HBD 3, PSA 82.03, QED 0.64
Compound (SMILES): CN(C(=O)OC(C)(C)C)c1ccc(S(=O)(=O)NNC(=O)c2cc(-c3cn(C)cn3)cc(Cl)c2F)cc1
InChIKey: LKTBOWJVEHBLEI-UHFFFAOYSA-N
Target: Histone acetyltransferase KAT7 (SINGLE PROTEIN), Homo sapiens
UniProt: O95251
Assay: KAT-7 Enzyme Assay: Enzyme assay buffer was 50 mM Tris pH 8.0, 0.002% Tween20, 0.005% bovine skin gelatin, and 1 mM dithiothreitol (DTT). For determination of IC50values, compounds were serially diluted with 2% (v/v) DMSO in the final reaction, pre-incubating each dilution of each compound with 40 μL of assay buffer containing KAT-7 enzyme (6 nM final concentration). 10 μL of assay buffer containing 1 μM peptide substrate and 2 μM acetyl coenzyme A (final concentrations) was added. Reactions (50 μL total) were then carried out at 25° C. for 120 minutes. Reactions were terminated by the addition of 0.5% formic acid (final concentration), and a sample of each reaction was analyzed by SAMDI Tech, Inc. (Chicago, Ill.) using self-assembled monolayer desorption/ionization time-of-flight mass spectrometry (Mrksich, M. (2008) Mass spectrometry of self-assembled monolayers: a new tool for molecular surface science. ACS Nano 2, 7-18).
Measurement: IC50 < 10000 nM (pChEMBL 5)
Descriptors: MW 538, ALogP 3.87, HBA 7, HBD 2, PSA 122.63, QED 0.46
Compound (SMILES): COc1cc(OC)c(Br)c(-n2nc(-c3nc(-c4cnn(C)c4)cnc3N)ccc2=O)c1Br
InChIKey: UOCJRPUXXNKLHL-UHFFFAOYSA-N
Target: Fibroblast growth factor receptor 3 (SINGLE PROTEIN), Homo sapiens
UniProt: P22607
Assay: Enzyme Assay: FGFR1, 2 and 3 kinase activity was measured by the Invitrogen LanthaScreen Assay technology which directly measures the amount of substrate phosphorylation by TR-FRET using a fluorescein-labeled peptide and Europium-labeled antibody.To measure FGFR1 kinase activity, 200 pM His-tagged recombinant human FGFR1 catalytic domain (amino acids 308-731) (Life Technologies Cat. No. PR4660A) was incubated with 100 nM Alexa Fluor® 647-Poly-GT Peptide Substrate (Life Technologies Cat. No. PV5836) and ATP in the presence of Mg++, along with test compound in a buffer consisting of 250 mM HEPES, 25 mM MgCl2, 0.05% TritonX-100, pH 7.5, and 2% DMSO. Compounds were typically prepared in a threefold serial dilution in DMSO and added to the assay to give the appropriate final concentration. After 20 minutes incubation at 22° C., an equal volume of 2 nM LanthaScreen® Eu-PY20 Antibody (Life Technologies Cat. No. PV5691) and EDTA were added to quench the kinase reaction and start the detection reaction. After an additional 60 minute incubation at 22° C., the reaction was measured using a PerkinElmer EnVision multimode plate reader via TR-FRET dual wavelength detection, and the percent of control (POC) calculated using a ratiometric emission factor. 100 POC is determined using no test compound and 0 POC is determined using no enzyme. The POC values were fit to a 4 parameter logistic curve and the IC50 value is point where the curve crosses 50 POC.To measure FGFR2 kinase activity: 200 pM His-tagged recombinant human FGFR2 cytoplasmic domain (amino acids 403-822), (Life Technologies Cat. No. PR5332A); 20 minutes incubation at 22° C., 60 minute detection incubation at 22° C.To measure FGFR3 kinase activity: 750 pM N-terminal GST-HIS6 fusion protein with a 3C cleavage site recombinant human FGFR3 (amino acids R397-T806) (ProQinase Cat. No. 1068-0000-1); 10 minutes incubation at 22° C., 60 minute detection incubation at 22° C.
Measurement: IC50 = 11.8 nM (pChEMBL 7.929999828338623)
Descriptors: MW 563.21, ALogP 3.21, HBA 10, HBD 1, PSA 122.97, QED 0.39
Compound (SMILES): COC(=O)c1cc2c(cc1C)/C(=C(/Nc1ccc(C(=O)N3CCC(C(=O)NCCN(C)C)CC3)cc1)c1ccccc1)C(=O)N2
InChIKey: KWVDRTIIZKGPOQ-KTMFPKCZSA-N
Target: Platelet-derived growth factor receptor alpha (SINGLE PROTEIN), Homo sapiens
UniProt: P16234
Assay: PDGFR alpha Enzyme Inhibition: The inhibitory activities of compounds of the invention against PDGFRα (PDGFRα Kinase Enzyme System: Promega), were evaluated by mixing the PDGFRα protein (12.5 ng/mL, 2 μL), substrate (Poly (4:1 Glu4, Tyr1), 100 ng/mL, 2 μL) with the test compound (2 μL at either 3 μM, 0.67 μM, 0.15 μM, 0.033 μM, 0.0073 μM, 0.0016 μM, 0.0036 μM or 0.00008 μM) for 90 min at 25° C. The kinase reaction was initiated by adding ATP (25 μM, 2 μL) and the mixture was incubated for 1 hr at 25° C. ADP-Glo reagent was added for 40 min (8 μL) then development reagent (16 μL) was added for 40 min prior to detection in a microplate reader (EnVision® Multilabel Reader, Perkin Elmer).
Measurement: Ki = 10.2 nM (pChEMBL 7.989999771118164)
Descriptors: MW 609.73, ALogP 4.24, HBA 7, HBD 3, PSA 120.08, QED 0.25
Compound (SMILES): COc1ccc(COc2ccc(Nc3ccc4ncc(N5CCN(CCO)CC5)nc4c3C#N)cc2OC)cc1
InChIKey: PQNANICAKMCWPN-UHFFFAOYSA-N
Target: Platelet-derived growth factor receptor beta (SINGLE PROTEIN), Homo sapiens
UniProt: P09619
Assay: Kinase Assay: PDGFRβ: Inhibition of PDGFRβ kinase activity by a test compound disclosed herein was estimated by radiometric assay. Standard assay conditions were 10 ng of recombinant PDGFRβ (SignalChem) with 2 μg of substrate Poly-(Glu 4:Tyr 1) (sigma) in the assay buffer in kinase reaction buffer (10 mM MOPS pH 7.0, 0.21 mM EDTA, 0.5% glycerol, 0.001% Brij-35, 0.01 2-mercaptoehtanol, 1 mg/ml BSA, 10 mM MgCl2, 10 mM MnCl2, 10 μM ATP, 0.1 μCi per well [33P]-ATP), in the presence of test compound (diluted in final concentration of 4% DMSO) or DMSO control, with a final volume of 25 μl for 60 minutes at 30° C. The reaction was stopped by adding 5 μl of 3% phosphoric acid solution. Total reaction solution was then harvested onto a filter plate (UniFilter-96 GF/B, PerkinElmer), and washed 20 times for 5 min with dH2O. 30 μl of MicroScint-20 Cocktail (PerkinElmer) was added to dried plate. The plate was sealed and counted using a TopCount scintillation detector (PerkinElmer). The readout from control reaction (complete reaction mixture) was designated as 0% inhibition and the readout for the reaction without enzyme as 100% inhibition. The IC50 values of quinoxaline compounds of this invention against PDGFRβ kinase were determined using the GraphPad Prism 5 software.
Measurement: IC50 > 500 nM (pChEMBL 6.301000118255615)
Descriptors: MW 540.62, ALogP 3.96, HBA 10, HBD 2, PSA 116, QED 0.31
Compound (SMILES): O=C(CN1CC2CCC(C1)O2)Nc1cc(C(=O)Nc2ccc(-c3ccccc3F)nc2)ccc1OC(F)(F)F
InChIKey: QUECETJBQMLUHM-UHFFFAOYSA-N
Target: Protein Wnt-3a (SINGLE PROTEIN), Homo sapiens
UniProt: P56704
Assay: HEK TOP OncoFlash Assay: In preparation of the assay, the two cell lines were plated 24 hours before beginning the test at 10000 cells per well in a 384 micro titre plate (MTP) in 30 μl growth medium. Before compound testing a dose response curve for the Wnt dependent luciferase expression was recorded by stimulating the assay cell line with human recombinant Wnt-3a (R&D, #5036-WN-010) at different concentrations for 16 hours at 37° C. and 5% CO2 followed by subsequent luciferase measurement, to determine the Wnt-3a EC50 for the HEK293 TOP cell line on the day of testing. The recombinant human Wnt-3a was thereby applied between 2500 and 5 ng/ml in two-fold dilution steps. Selective inhibitory activity for small molecules on the wildtype Wnt pathway was determined after parallel incubation of both (TOP and FOP) HEK293 reporter cell lines with a compound dilution series from 50 μM to 15 nM in steps of 3.16-fold dilutions in CAFTY buffer (130 mM NaCl, 5 mM KCl, 20 mM HEPES, 1 mM MgCl2, 5 mM NaHCO3, pH 7.4) containing 2 mM Ca2+ and 0.01% BSA.The compounds were thereby serially prediluted in 100% DMSO and thereafter 50 fold into the CAFTY compound dilution buffer (described above). From this dilution 10 μl were added in combination with the EC50 concentration of recombinant Wnt3a to the cells in 30 μl growth medium and incubated for 16 hours at 37° C. and 5% CO2. Thereafter luciferase assay buffer (1:1 mixture of luciferase substrate buffer (20 mM Tricine, 2.67 mM MgSO4, 0.1 mM EDTA, 4 mM DTT, 270 μM Coenzyme A, 470 μM Luciferin, 530 μM ATP, ph adjusted to pH 7.8 with a sufficient volume of 5M NaOH) and Triton buffer (30 ml Triton X-100, 115 ml glycerol, 308 mg Dithiothreitol, 4.45 g Na2HPO4. 2H2O, 3.03 g TRIS HCl (CAS Number 1185-53-1), ad 1I H2O, pH 7.8) was added in an equal volume to determine luciferase expression as a measure of Wnt signaling activity in a luminometer. The Wnt inhibitory activity was determined as IC50 of resulting dose response curves.
Measurement: IC50 = 13 nM (pChEMBL 7.889999866485596)
Descriptors: MW 544.51, ALogP 4.84, HBA 6, HBD 2, PSA 92.79, QED 0.41
Compound (SMILES): Cc1nnc2ccc3c(cc(-c4cscn4)n3Cc3ccccc3)n12
InChIKey: PEEOUPVIEYVHJB-UHFFFAOYSA-N
Target: Bromodomain-containing protein 4 (SINGLE PROTEIN), Homo sapiens
UniProt: O60885
Assay: AlphaScreen Assay: BRD4-BD1 and BRD4-BD2 assays were conducted in white 384-well polystyrene plate in a final volume of 20 μL for BD1 and 40 μL for BD2. Inhibitors were first serially diluted in DMSO and added to the plate wells before the addition of other reaction components. The final concentration of DMSO in the assay was 1.25% (BD1) and 0.83% (BD2). The assays were carried out at room temperature for 75 min. in the assay buffer (50 mM HEPES, pH 7.4, 100 mM NaCl, 0.05% CHAPS, 0.01% BSA), containing 50 nM Biotin-labeled tetra-acetylated histone H4 peptide (H4Ac4), 3.8 nM (BRD4-BD1, BPS Bioscience #31040) or 20 nM (BRD4-BD2, BPS Bioscience #31041). The reaction followed by the addition of 20 μL of assay buffer supplemented with Streptavidin donor beads (PerkinElmer 6760002) and GSH Acceptor beads (PerkinElmer-AL109C) at 4 μg/mL under reduced light. After plate sealing, the plate was incubated in the dark at room temperature for 75 min. before reading on a PHERAstar FS plate reader (BMG Labtech).
Measurement: IC50 < 1000 nM (pChEMBL 6)
Descriptors: MW 345.43, ALogP 4.16, HBA 6, HBD 0, PSA 48.01, QED 0.49
Compound (SMILES): CCOc1c(C(C)NC(=O)c2c(N)nn3cccnc23)cc(Cl)c2c(Br)n(CCO)nc12
InChIKey: HXEFGFSULFLJNA-UHFFFAOYSA-N
Target: Phosphatidylinositol 4,5-bisphosphate 3-kinase catalytic subunit gamma isoform (SINGLE PROTEIN), Homo sapiens
UniProt: P48736
Assay: THP-1 RPS6 ELISA Assay: To measure the Phosphorylated Ribosomal Protein S6 (RPS6) in cell lysates, THP-1 cells (Human Acute Monocytic Leukemia) are purchased from ATCC (Manassas, Va.) and maintained in RPMI with 10% FBS (Gibco/Life Technologies, Carlsbad, Calif.). For the assay, THP-1 cells are serum starved overnight in RPMI, then plated in RPMI (2×105 cells/well in 90 μL) into 96-well flat-bottom tissue culture treated plates (Corning, Corning, N.Y.), in the presence or absence of a concentration range of test compounds. Covered plates are incubated for 2 hours at 37° C., 5% CO2 then treated with or without 10 nM MCP-1(MYBioSource, San Diego, Calif.) for 15 minutes at 37° C., 5% CO2. Plates are centrifuged at 1600 RPM and supernatants are removed. Cells are lysed in Lysis Buffer (Cell Signaling, Danvers, Mass.) with Protease Inhibitor (Calbiochem/EMD, Germany), PMSF (Sigma, St Louis Mo.), HALTS (Thermo Fisher, Rockford, Ill.) for 30 min on wet ice. Cell lysates are frozen at −80° C. before testing. The lysates are tested in the Human/Mouse/Rat Phospho-RPS6 ELISA (R&D Systems, Inc. Minn, MN). The plate is measured using a microplate reader (SpectraMax M5-Molecular Devices, LLC Sunnyvale, Calif.) set to 450 nm with a wavelength correction of 540. IC50 determination is performed by fitting the curve of inhibitor percent inhibition versus the log of the inhibitor concentration using the GraphPad Prism 5.0 software.
Measurement: IC50 > 1000 nM (pChEMBL 6)
Descriptors: MW 522.79, ALogP 2.96, HBA 9, HBD 3, PSA 132.59, QED 0.34
Compound (SMILES): Cc1ncsc1-c1ccc([C@H](C)NC(=O)[C@@H]2C[C@@H](O)CN2C(=O)[C@@H](NC(=O)COCCOCCCNCC2CN(c3nn(C(C)C)c4cc(Nc5ccnc(-c6cnn(S(=O)(=O)C7CC7)c6)n5)ncc34)C2)C(C)(C)C)cc1
InChIKey: MZJKZDHUFICXGJ-XNQOUOMRSA-N
Target: Epidermal growth factor receptor (SINGLE PROTEIN), Homo sapiens
UniProt: P00533
Assay: TR-FRET Assay for ERBB Kinases: All compounds and PROTACs were serially diluted in three-fold increments using 100% DMSO, followed by an intermediate 10-fold dilution using Buffer A (50 mM HEPES, pH 7.5, 50 mM NaCl, 10 mM MgCl2, 1 mM DTT, and 0.1% Pluronic F-68). Two microliters of serially diluted compound or PROTAC were then transferred to black 384-well Proxiplates (PerkinElmer, #6008260) using an Integra Viaflo96. Next, 10 uL of protein kinase in Buffer A was added to each well of the assay plate and pre-incubated with compound for 10 minutes. Kinase reactions were then initiated by addition of 5 uL substrate mix containing 3 mM ATP and 30 uM fluorescein-labeled Poly-GluTyr (Thermo Fisher, #PV3610) in Buffer A and allowed to proceed for 10 minutes at room temperature. Reactions were quenched by addition of a 5 uL mixture containing 5 nM LanthaScreen® Tb-pY20 Antibody (Thermo Fisher, #PV3552) and 40 mM EDTA in Buffer A. Assay plates were then read using a Synergy2 (Biotek Instruments, Winooski, Vt.) via excitation thru a 340/20 nm bandpass filter and emission collected thru 490/10 nm (donor) and 520/25 nm (acceptor) bandpass filters. The final kinase concentrations used for each 15 uL reaction were as follows: 0.2 nM EGFR Exon20NPG (SignalChem, #E10-132GG), 0.1 nM wild type EGFR (BPS Bioscience, #40187), 0.3 nM EGFR L858R/T790M/C797S (BPS Bioscience, #40351), 0.1 nM EGFR L858R (BPS Bioscience, #40189), 0.4 nM L858R/T790M (BPS Bioscience, #40350), InM EGFR Dell9 (SignalChem, #E10-122JG), 10 nM EGFR Dell9 T790M (SignalChem, #E10-122KG), 0.3 nM Her2 (BPS Bioscience, #40230), 15 nM Her2 InsYVMA (SignalChem, #E27-13BG).
Measurement: IC50 = 2.1 nM (pChEMBL 8.680000305175781)
Descriptors: MW 1095.37