|
Inhibition of wild type EGFR (unknown origin) expressed in Sf9 cells pre-incubated for 30 mins before substrate and ATP addition by homogeneous time-resolved FRET assay
|
Homo sapiens
|
2.0
nM
|
|
Journal : J. Med. Chem.
Title : Targeting Drug Resistance in EGFR with Covalent Inhibitors: A Structure-Based Design Approach.
Year : 2015
Volume : 58
Issue : 17
First Page : 6844
Last Page : 6863
Authors : Engel J, Richters A, Getlik M, Tomassi S, Keul M, Termathe M, Lategahn J, Becker C, Mayer-Wrangowski S, Grütter C, Uhlenbrock N, Krüll J, Schaumann N, Eppmann S, Kibies P, Hoffgaard F, Heil J, Menninger S, Ortiz-Cuaran S, Heuckmann JM, Tinnefeld V, Zahedi RP, Sos ML, Schultz-Fademrecht C, Thomas RK, Kast SM, Rauh D.
Abstract : Receptor tyrosine kinases represent one of the prime targets in cancer therapy, as the dysregulation of these elementary transducers of extracellular signals, like the epidermal growth factor receptor (EGFR), contributes to the onset of cancer, such as non-small cell lung cancer (NSCLC). Strong efforts were directed to the development of irreversible inhibitors and led to compound CO-1686, which takes advantage of increased residence time at EGFR by alkylating Cys797 and thereby preventing toxic effects. Here, we present a structure-based approach, rationalized by subsequent computational analysis of conformational ligand ensembles in solution, to design novel and irreversible EGFR inhibitors based on a screening hit that was identified in a phenotype screen of 80 NSCLC cell lines against approximately 1500 compounds. Using protein X-ray crystallography, we deciphered the binding mode in engineered cSrc (T338M/S345C), a validated model system for EGFR-T790M, which constituted the basis for further rational design approaches. Chemical synthesis led to further compound collections that revealed increased biochemical potency and, in part, selectivity toward mutated (L858R and L858R/T790M) vs nonmutated EGFR. Further cell-based and kinetic studies were performed to substantiate our initial findings. Utilizing proteolytic digestion and nano-LC-MS/MS analysis, we confirmed the alkylation of Cys797.
|
Inhibition of EGFR L858R mutant (unknown origin) expressed in Sf9 cells pre-incubated for 60 mins before substrate and ATP addition by homogeneous time-resolved FRET assay
|
Homo sapiens
|
2.0
nM
|
|
Journal : J. Med. Chem.
Title : Targeting Drug Resistance in EGFR with Covalent Inhibitors: A Structure-Based Design Approach.
Year : 2015
Volume : 58
Issue : 17
First Page : 6844
Last Page : 6863
Authors : Engel J, Richters A, Getlik M, Tomassi S, Keul M, Termathe M, Lategahn J, Becker C, Mayer-Wrangowski S, Grütter C, Uhlenbrock N, Krüll J, Schaumann N, Eppmann S, Kibies P, Hoffgaard F, Heil J, Menninger S, Ortiz-Cuaran S, Heuckmann JM, Tinnefeld V, Zahedi RP, Sos ML, Schultz-Fademrecht C, Thomas RK, Kast SM, Rauh D.
Abstract : Receptor tyrosine kinases represent one of the prime targets in cancer therapy, as the dysregulation of these elementary transducers of extracellular signals, like the epidermal growth factor receptor (EGFR), contributes to the onset of cancer, such as non-small cell lung cancer (NSCLC). Strong efforts were directed to the development of irreversible inhibitors and led to compound CO-1686, which takes advantage of increased residence time at EGFR by alkylating Cys797 and thereby preventing toxic effects. Here, we present a structure-based approach, rationalized by subsequent computational analysis of conformational ligand ensembles in solution, to design novel and irreversible EGFR inhibitors based on a screening hit that was identified in a phenotype screen of 80 NSCLC cell lines against approximately 1500 compounds. Using protein X-ray crystallography, we deciphered the binding mode in engineered cSrc (T338M/S345C), a validated model system for EGFR-T790M, which constituted the basis for further rational design approaches. Chemical synthesis led to further compound collections that revealed increased biochemical potency and, in part, selectivity toward mutated (L858R and L858R/T790M) vs nonmutated EGFR. Further cell-based and kinetic studies were performed to substantiate our initial findings. Utilizing proteolytic digestion and nano-LC-MS/MS analysis, we confirmed the alkylation of Cys797.
|
Inhibition of EGFR L858R/T790M mutant (unknown origin) expressed in Sf9 cells pre-incubated for 60 mins before substrate and ATP addition by homogeneous time-resolved FRET assay
|
Homo sapiens
|
3.0
nM
|
|
Journal : J. Med. Chem.
Title : Targeting Drug Resistance in EGFR with Covalent Inhibitors: A Structure-Based Design Approach.
Year : 2015
Volume : 58
Issue : 17
First Page : 6844
Last Page : 6863
Authors : Engel J, Richters A, Getlik M, Tomassi S, Keul M, Termathe M, Lategahn J, Becker C, Mayer-Wrangowski S, Grütter C, Uhlenbrock N, Krüll J, Schaumann N, Eppmann S, Kibies P, Hoffgaard F, Heil J, Menninger S, Ortiz-Cuaran S, Heuckmann JM, Tinnefeld V, Zahedi RP, Sos ML, Schultz-Fademrecht C, Thomas RK, Kast SM, Rauh D.
Abstract : Receptor tyrosine kinases represent one of the prime targets in cancer therapy, as the dysregulation of these elementary transducers of extracellular signals, like the epidermal growth factor receptor (EGFR), contributes to the onset of cancer, such as non-small cell lung cancer (NSCLC). Strong efforts were directed to the development of irreversible inhibitors and led to compound CO-1686, which takes advantage of increased residence time at EGFR by alkylating Cys797 and thereby preventing toxic effects. Here, we present a structure-based approach, rationalized by subsequent computational analysis of conformational ligand ensembles in solution, to design novel and irreversible EGFR inhibitors based on a screening hit that was identified in a phenotype screen of 80 NSCLC cell lines against approximately 1500 compounds. Using protein X-ray crystallography, we deciphered the binding mode in engineered cSrc (T338M/S345C), a validated model system for EGFR-T790M, which constituted the basis for further rational design approaches. Chemical synthesis led to further compound collections that revealed increased biochemical potency and, in part, selectivity toward mutated (L858R and L858R/T790M) vs nonmutated EGFR. Further cell-based and kinetic studies were performed to substantiate our initial findings. Utilizing proteolytic digestion and nano-LC-MS/MS analysis, we confirmed the alkylation of Cys797.
|
Inhibition of EGFR L858R mutant (unknown origin) expressed in Sf9 cells by enzyme kinetics assay
|
Homo sapiens
|
1.75
nM
|
|
Journal : J. Med. Chem.
Title : Targeting Drug Resistance in EGFR with Covalent Inhibitors: A Structure-Based Design Approach.
Year : 2015
Volume : 58
Issue : 17
First Page : 6844
Last Page : 6863
Authors : Engel J, Richters A, Getlik M, Tomassi S, Keul M, Termathe M, Lategahn J, Becker C, Mayer-Wrangowski S, Grütter C, Uhlenbrock N, Krüll J, Schaumann N, Eppmann S, Kibies P, Hoffgaard F, Heil J, Menninger S, Ortiz-Cuaran S, Heuckmann JM, Tinnefeld V, Zahedi RP, Sos ML, Schultz-Fademrecht C, Thomas RK, Kast SM, Rauh D.
Abstract : Receptor tyrosine kinases represent one of the prime targets in cancer therapy, as the dysregulation of these elementary transducers of extracellular signals, like the epidermal growth factor receptor (EGFR), contributes to the onset of cancer, such as non-small cell lung cancer (NSCLC). Strong efforts were directed to the development of irreversible inhibitors and led to compound CO-1686, which takes advantage of increased residence time at EGFR by alkylating Cys797 and thereby preventing toxic effects. Here, we present a structure-based approach, rationalized by subsequent computational analysis of conformational ligand ensembles in solution, to design novel and irreversible EGFR inhibitors based on a screening hit that was identified in a phenotype screen of 80 NSCLC cell lines against approximately 1500 compounds. Using protein X-ray crystallography, we deciphered the binding mode in engineered cSrc (T338M/S345C), a validated model system for EGFR-T790M, which constituted the basis for further rational design approaches. Chemical synthesis led to further compound collections that revealed increased biochemical potency and, in part, selectivity toward mutated (L858R and L858R/T790M) vs nonmutated EGFR. Further cell-based and kinetic studies were performed to substantiate our initial findings. Utilizing proteolytic digestion and nano-LC-MS/MS analysis, we confirmed the alkylation of Cys797.
|
Inhibition of EGFR L858R/T790M mutant (unknown origin) expressed in Sf9 cells by enzyme kinetics assay
|
Homo sapiens
|
1.65
nM
|
|
Journal : J. Med. Chem.
Title : Targeting Drug Resistance in EGFR with Covalent Inhibitors: A Structure-Based Design Approach.
Year : 2015
Volume : 58
Issue : 17
First Page : 6844
Last Page : 6863
Authors : Engel J, Richters A, Getlik M, Tomassi S, Keul M, Termathe M, Lategahn J, Becker C, Mayer-Wrangowski S, Grütter C, Uhlenbrock N, Krüll J, Schaumann N, Eppmann S, Kibies P, Hoffgaard F, Heil J, Menninger S, Ortiz-Cuaran S, Heuckmann JM, Tinnefeld V, Zahedi RP, Sos ML, Schultz-Fademrecht C, Thomas RK, Kast SM, Rauh D.
Abstract : Receptor tyrosine kinases represent one of the prime targets in cancer therapy, as the dysregulation of these elementary transducers of extracellular signals, like the epidermal growth factor receptor (EGFR), contributes to the onset of cancer, such as non-small cell lung cancer (NSCLC). Strong efforts were directed to the development of irreversible inhibitors and led to compound CO-1686, which takes advantage of increased residence time at EGFR by alkylating Cys797 and thereby preventing toxic effects. Here, we present a structure-based approach, rationalized by subsequent computational analysis of conformational ligand ensembles in solution, to design novel and irreversible EGFR inhibitors based on a screening hit that was identified in a phenotype screen of 80 NSCLC cell lines against approximately 1500 compounds. Using protein X-ray crystallography, we deciphered the binding mode in engineered cSrc (T338M/S345C), a validated model system for EGFR-T790M, which constituted the basis for further rational design approaches. Chemical synthesis led to further compound collections that revealed increased biochemical potency and, in part, selectivity toward mutated (L858R and L858R/T790M) vs nonmutated EGFR. Further cell-based and kinetic studies were performed to substantiate our initial findings. Utilizing proteolytic digestion and nano-LC-MS/MS analysis, we confirmed the alkylation of Cys797.
|
Omnia Assay: Briefly, 10x stocks of EGFR-WT (PV3872) from Invitrogen and EGFR-T790M/L858R (40350) from BPS Bioscience, San Diego, Calif., 1.13xATP (AS001A) and appropriate Tyr-Sox conjugated peptide substrates (KCZ1001) were prepared in 1x kinase reaction buffer consisting of 20 mM Tris, pH 7.5, 5 mM MgCl2, 1 mM EGTA, 5 mM beta-glycerophosphate, 5% glycerol (10x stock, KB002A) and 0.2 mM DTT (DS001A). 5 uL of each enzyme were pre-incubated in a Corning (#3574) 384-well, white, non-binding surface microtiter plate (Corning, N.Y.) for 30 min. at 25C. with a 0.5 μL volume of 50% DMSO and serially diluted compounds prepared in 50% DMSO. Kinase reactions were started with the addition of 45 uL of the ATP/Tyr-Sox peptide substrate mix and monitored every 71 seconds for 60 minutes at lamda ex360/lamda em485 in a Synergy4 plate reader from BioTek (Winooski, Vt.). At the conclusion of each assay, progress curves from each well were examined for linear reaction kinetics and fit statistics (R2, 95% confidence interval, absolute sum of squares). Initial velocity (0 minutes to 30 minutes) from each reaction was determined from the slope of a plot of relative fluorescence units vs time (minutes) and then plotted against inhibitor concentration to estimate IC50 from log [Inhibitor] vs Response, Variable Slope model in GraphPad Prism from GraphPad Software (San Diego, Calif.).
|
Homo sapiens
|
1.0
nM
|
|
Title : Heterocyclic compounds and uses thereof
Year : 2015
|
Omnia Assay: Briefly, 10x stocks of EGFR-WT (PV3872) from Invitrogen and EGFR-T790M/L858R (40350) from BPS Bioscience, San Diego, Calif., 1.13xATP (AS001A) and appropriate Tyr-Sox conjugated peptide substrates (KCZ1001) were prepared in 1x kinase reaction buffer consisting of 20 mM Tris, pH 7.5, 5 mM MgCl2, 1 mM EGTA, 5 mM beta-glycerophosphate, 5% glycerol (10x stock, KB002A) and 0.2 mM DTT (DS001A). 5 uL of each enzyme were pre-incubated in a Corning (#3574) 384-well, white, non-binding surface microtiter plate (Corning, N.Y.) for 30 min. at 25C. with a 0.5 μL volume of 50% DMSO and serially diluted compounds prepared in 50% DMSO. Kinase reactions were started with the addition of 45 uL of the ATP/Tyr-Sox peptide substrate mix and monitored every 71 seconds for 60 minutes at lamda ex360/lamda em485 in a Synergy4 plate reader from BioTek (Winooski, Vt.). At the conclusion of each assay, progress curves from each well were examined for linear reaction kinetics and fit statistics (R2, 95% confidence interval, absolute sum of squares). Initial velocity (0 minutes to 30 minutes) from each reaction was determined from the slope of a plot of relative fluorescence units vs time (minutes) and then plotted against inhibitor concentration to estimate IC50 from log [Inhibitor] vs Response, Variable Slope model in GraphPad Prism from GraphPad Software (San Diego, Calif.).
|
Homo sapiens
|
5.5
nM
|
|
Title : Heterocyclic compounds and uses thereof
Year : 2015
|
Inhibiton of wild type EGFR (unknown origin) using Poly (Glu4Tyr1) as substrate incubated for 1 hr by ELISA
|
Homo sapiens
|
350.0
nM
|
|
Journal : MedChemComm
Title : C5-substituted pyrido[2,3-d]pyrimidin-7-ones as highly specific kinase inhibitors targeting the clinical resistance-related EGFRT790Mmutant
Year : 2015
Volume : 6
Issue : 9
First Page : 1693
Last Page : 1697
Authors : Xu T, Peng T, Ren X, Zhang L, Yu L, Luo J, Zhang Z, Tu Z, Tong L, Huang Z, Lu X, Geng M, Xie H, Ding J, Ding K
|
Inhibition of EGFR L858R/T790M mutant (unknown origin) using Poly(Glu,Tyr)4:1 as substrate incubated for 1 hr by ELISA
|
Homo sapiens
|
14.3
nM
|
|
Journal : MedChemComm
Title : C5-substituted pyrido[2,3-d]pyrimidin-7-ones as highly specific kinase inhibitors targeting the clinical resistance-related EGFRT790Mmutant
Year : 2015
Volume : 6
Issue : 9
First Page : 1693
Last Page : 1697
Authors : Xu T, Peng T, Ren X, Zhang L, Yu L, Luo J, Zhang Z, Tu Z, Tong L, Huang Z, Lu X, Geng M, Xie H, Ding J, Ding K
|
Binding affinity to wild type human EGFR expressed in Escherichia coli BL21 incubated for 1 hr
|
Homo sapiens
|
180.0
nM
|
|
Journal : MedChemComm
Title : C5-substituted pyrido[2,3-d]pyrimidin-7-ones as highly specific kinase inhibitors targeting the clinical resistance-related EGFRT790Mmutant
Year : 2015
Volume : 6
Issue : 9
First Page : 1693
Last Page : 1697
Authors : Xu T, Peng T, Ren X, Zhang L, Yu L, Luo J, Zhang Z, Tu Z, Tong L, Huang Z, Lu X, Geng M, Xie H, Ding J, Ding K
|
Binding affinity to human EGFR L858R/T790M mutant expressed in Escherichia coli BL21 incubated for 1 hr
|
Homo sapiens
|
7.0
nM
|
|
Journal : MedChemComm
Title : C5-substituted pyrido[2,3-d]pyrimidin-7-ones as highly specific kinase inhibitors targeting the clinical resistance-related EGFRT790Mmutant
Year : 2015
Volume : 6
Issue : 9
First Page : 1693
Last Page : 1697
Authors : Xu T, Peng T, Ren X, Zhang L, Yu L, Luo J, Zhang Z, Tu Z, Tong L, Huang Z, Lu X, Geng M, Xie H, Ding J, Ding K
|
Inhibition of EGFR L858R/T790M double mutant autophosphorylation in human NCI-H1975 cells after 2 hrs by sandwich ELISA
|
Homo sapiens
|
16.0
nM
|
|
Journal : J. Med. Chem.
Title : Discovery of 1-{(3R,4R)-3-[({5-Chloro-2-[(1-methyl-1H-pyrazol-4-yl)amino]-7H-pyrrolo[2,3-d]pyrimidin-4-yl}oxy)methyl]-4-methoxypyrrolidin-1-yl}prop-2-en-1-one (PF-06459988), a Potent, WT Sparing, Irreversible Inhibitor of T790M-Containing EGFR Mutants.
Year : 2016
Volume : 59
Issue : 5
First Page : 2005
Last Page : 2024
Authors : Cheng H, Nair SK, Murray BW, Almaden C, Bailey S, Baxi S, Behenna D, Cho-Schultz S, Dalvie D, Dinh DM, Edwards MP, Feng JL, Ferre RA, Gajiwala KS, Hemkens MD, Jackson-Fisher A, Jalaie M, Johnson TO, Kania RS, Kephart S, Lafontaine J, Lunney B, Liu KK, Liu Z, Matthews J, Nagata A, Niessen S, Ornelas MA, Orr ST, Pairish M, Planken S, Ren S, Richter D, Ryan K, Sach N, Shen H, Smeal T, Solowiej J, Sutton S, Tran K, Tseng E, Vernier W, Walls M, Wang S, Weinrich SL, Xin S, Xu H, Yin MJ, Zientek M, Zhou R, Kath JC.
Abstract : First generation EGFR TKIs (gefitinib, erlotinib) provide significant clinical benefit for NSCLC cancer patients with oncogenic EGFR mutations. Ultimately, these patients' disease progresses, often driven by a second-site mutation in the EGFR kinase domain (T790M). Another liability of the first generation drugs is severe adverse events driven by inhibition of WT EGFR. As such, our goal was to develop a highly potent irreversible inhibitor with the largest selectivity ratio between the drug-resistant double mutants (L858R/T790M, Del/T790M) and WT EGFR. A unique approach to develop covalent inhibitors, optimization of reversible binding affinity, served as a cornerstone of this effort. PF-06459988 was discovered as a novel, third generation irreversible inhibitor, which demonstrates (i) high potency and specificity to the T790M-containing double mutant EGFRs, (ii) minimal intrinsic chemical reactivity of the electrophilic warhead, (iii) greatly reduced proteome reactivity relative to earlier irreversible EGFR inhibitors, and (iv) minimal activity against WT EGFR.
|
Inhibition of EGFR deletion mutant autophosphorylation in human PC9 cells after 2 hrs by sandwich ELISA
|
Homo sapiens
|
79.0
nM
|
|
Journal : J. Med. Chem.
Title : Discovery of 1-{(3R,4R)-3-[({5-Chloro-2-[(1-methyl-1H-pyrazol-4-yl)amino]-7H-pyrrolo[2,3-d]pyrimidin-4-yl}oxy)methyl]-4-methoxypyrrolidin-1-yl}prop-2-en-1-one (PF-06459988), a Potent, WT Sparing, Irreversible Inhibitor of T790M-Containing EGFR Mutants.
Year : 2016
Volume : 59
Issue : 5
First Page : 2005
Last Page : 2024
Authors : Cheng H, Nair SK, Murray BW, Almaden C, Bailey S, Baxi S, Behenna D, Cho-Schultz S, Dalvie D, Dinh DM, Edwards MP, Feng JL, Ferre RA, Gajiwala KS, Hemkens MD, Jackson-Fisher A, Jalaie M, Johnson TO, Kania RS, Kephart S, Lafontaine J, Lunney B, Liu KK, Liu Z, Matthews J, Nagata A, Niessen S, Ornelas MA, Orr ST, Pairish M, Planken S, Ren S, Richter D, Ryan K, Sach N, Shen H, Smeal T, Solowiej J, Sutton S, Tran K, Tseng E, Vernier W, Walls M, Wang S, Weinrich SL, Xin S, Xu H, Yin MJ, Zientek M, Zhou R, Kath JC.
Abstract : First generation EGFR TKIs (gefitinib, erlotinib) provide significant clinical benefit for NSCLC cancer patients with oncogenic EGFR mutations. Ultimately, these patients' disease progresses, often driven by a second-site mutation in the EGFR kinase domain (T790M). Another liability of the first generation drugs is severe adverse events driven by inhibition of WT EGFR. As such, our goal was to develop a highly potent irreversible inhibitor with the largest selectivity ratio between the drug-resistant double mutants (L858R/T790M, Del/T790M) and WT EGFR. A unique approach to develop covalent inhibitors, optimization of reversible binding affinity, served as a cornerstone of this effort. PF-06459988 was discovered as a novel, third generation irreversible inhibitor, which demonstrates (i) high potency and specificity to the T790M-containing double mutant EGFRs, (ii) minimal intrinsic chemical reactivity of the electrophilic warhead, (iii) greatly reduced proteome reactivity relative to earlier irreversible EGFR inhibitors, and (iv) minimal activity against WT EGFR.
|
Inhibition of EGFR deletion mutant autophosphorylation in human HCC827 cells after 2 hrs by sandwich ELISA
|
Homo sapiens
|
65.0
nM
|
|
Journal : J. Med. Chem.
Title : Discovery of 1-{(3R,4R)-3-[({5-Chloro-2-[(1-methyl-1H-pyrazol-4-yl)amino]-7H-pyrrolo[2,3-d]pyrimidin-4-yl}oxy)methyl]-4-methoxypyrrolidin-1-yl}prop-2-en-1-one (PF-06459988), a Potent, WT Sparing, Irreversible Inhibitor of T790M-Containing EGFR Mutants.
Year : 2016
Volume : 59
Issue : 5
First Page : 2005
Last Page : 2024
Authors : Cheng H, Nair SK, Murray BW, Almaden C, Bailey S, Baxi S, Behenna D, Cho-Schultz S, Dalvie D, Dinh DM, Edwards MP, Feng JL, Ferre RA, Gajiwala KS, Hemkens MD, Jackson-Fisher A, Jalaie M, Johnson TO, Kania RS, Kephart S, Lafontaine J, Lunney B, Liu KK, Liu Z, Matthews J, Nagata A, Niessen S, Ornelas MA, Orr ST, Pairish M, Planken S, Ren S, Richter D, Ryan K, Sach N, Shen H, Smeal T, Solowiej J, Sutton S, Tran K, Tseng E, Vernier W, Walls M, Wang S, Weinrich SL, Xin S, Xu H, Yin MJ, Zientek M, Zhou R, Kath JC.
Abstract : First generation EGFR TKIs (gefitinib, erlotinib) provide significant clinical benefit for NSCLC cancer patients with oncogenic EGFR mutations. Ultimately, these patients' disease progresses, often driven by a second-site mutation in the EGFR kinase domain (T790M). Another liability of the first generation drugs is severe adverse events driven by inhibition of WT EGFR. As such, our goal was to develop a highly potent irreversible inhibitor with the largest selectivity ratio between the drug-resistant double mutants (L858R/T790M, Del/T790M) and WT EGFR. A unique approach to develop covalent inhibitors, optimization of reversible binding affinity, served as a cornerstone of this effort. PF-06459988 was discovered as a novel, third generation irreversible inhibitor, which demonstrates (i) high potency and specificity to the T790M-containing double mutant EGFRs, (ii) minimal intrinsic chemical reactivity of the electrophilic warhead, (iii) greatly reduced proteome reactivity relative to earlier irreversible EGFR inhibitors, and (iv) minimal activity against WT EGFR.
|
Inhibition of EGFR deletion/T790M mutant autophosphorylation in human PC9-DRH cells after 2 hrs by sandwich ELISA
|
Homo sapiens
|
9.0
nM
|
|
Journal : J. Med. Chem.
Title : Discovery of 1-{(3R,4R)-3-[({5-Chloro-2-[(1-methyl-1H-pyrazol-4-yl)amino]-7H-pyrrolo[2,3-d]pyrimidin-4-yl}oxy)methyl]-4-methoxypyrrolidin-1-yl}prop-2-en-1-one (PF-06459988), a Potent, WT Sparing, Irreversible Inhibitor of T790M-Containing EGFR Mutants.
Year : 2016
Volume : 59
Issue : 5
First Page : 2005
Last Page : 2024
Authors : Cheng H, Nair SK, Murray BW, Almaden C, Bailey S, Baxi S, Behenna D, Cho-Schultz S, Dalvie D, Dinh DM, Edwards MP, Feng JL, Ferre RA, Gajiwala KS, Hemkens MD, Jackson-Fisher A, Jalaie M, Johnson TO, Kania RS, Kephart S, Lafontaine J, Lunney B, Liu KK, Liu Z, Matthews J, Nagata A, Niessen S, Ornelas MA, Orr ST, Pairish M, Planken S, Ren S, Richter D, Ryan K, Sach N, Shen H, Smeal T, Solowiej J, Sutton S, Tran K, Tseng E, Vernier W, Walls M, Wang S, Weinrich SL, Xin S, Xu H, Yin MJ, Zientek M, Zhou R, Kath JC.
Abstract : First generation EGFR TKIs (gefitinib, erlotinib) provide significant clinical benefit for NSCLC cancer patients with oncogenic EGFR mutations. Ultimately, these patients' disease progresses, often driven by a second-site mutation in the EGFR kinase domain (T790M). Another liability of the first generation drugs is severe adverse events driven by inhibition of WT EGFR. As such, our goal was to develop a highly potent irreversible inhibitor with the largest selectivity ratio between the drug-resistant double mutants (L858R/T790M, Del/T790M) and WT EGFR. A unique approach to develop covalent inhibitors, optimization of reversible binding affinity, served as a cornerstone of this effort. PF-06459988 was discovered as a novel, third generation irreversible inhibitor, which demonstrates (i) high potency and specificity to the T790M-containing double mutant EGFRs, (ii) minimal intrinsic chemical reactivity of the electrophilic warhead, (iii) greatly reduced proteome reactivity relative to earlier irreversible EGFR inhibitors, and (iv) minimal activity against WT EGFR.
|
Inhibition of EGFR L858R mutant autophosphorylation in human H3255 cells after 2 hrs by sandwich ELISA
|
Homo sapiens
|
46.0
nM
|
|
Journal : J. Med. Chem.
Title : Discovery of 1-{(3R,4R)-3-[({5-Chloro-2-[(1-methyl-1H-pyrazol-4-yl)amino]-7H-pyrrolo[2,3-d]pyrimidin-4-yl}oxy)methyl]-4-methoxypyrrolidin-1-yl}prop-2-en-1-one (PF-06459988), a Potent, WT Sparing, Irreversible Inhibitor of T790M-Containing EGFR Mutants.
Year : 2016
Volume : 59
Issue : 5
First Page : 2005
Last Page : 2024
Authors : Cheng H, Nair SK, Murray BW, Almaden C, Bailey S, Baxi S, Behenna D, Cho-Schultz S, Dalvie D, Dinh DM, Edwards MP, Feng JL, Ferre RA, Gajiwala KS, Hemkens MD, Jackson-Fisher A, Jalaie M, Johnson TO, Kania RS, Kephart S, Lafontaine J, Lunney B, Liu KK, Liu Z, Matthews J, Nagata A, Niessen S, Ornelas MA, Orr ST, Pairish M, Planken S, Ren S, Richter D, Ryan K, Sach N, Shen H, Smeal T, Solowiej J, Sutton S, Tran K, Tseng E, Vernier W, Walls M, Wang S, Weinrich SL, Xin S, Xu H, Yin MJ, Zientek M, Zhou R, Kath JC.
Abstract : First generation EGFR TKIs (gefitinib, erlotinib) provide significant clinical benefit for NSCLC cancer patients with oncogenic EGFR mutations. Ultimately, these patients' disease progresses, often driven by a second-site mutation in the EGFR kinase domain (T790M). Another liability of the first generation drugs is severe adverse events driven by inhibition of WT EGFR. As such, our goal was to develop a highly potent irreversible inhibitor with the largest selectivity ratio between the drug-resistant double mutants (L858R/T790M, Del/T790M) and WT EGFR. A unique approach to develop covalent inhibitors, optimization of reversible binding affinity, served as a cornerstone of this effort. PF-06459988 was discovered as a novel, third generation irreversible inhibitor, which demonstrates (i) high potency and specificity to the T790M-containing double mutant EGFRs, (ii) minimal intrinsic chemical reactivity of the electrophilic warhead, (iii) greatly reduced proteome reactivity relative to earlier irreversible EGFR inhibitors, and (iv) minimal activity against WT EGFR.
|
Inhibition of EGFR L858R / T790M double mutant phosphorylation in human NCI-H1975 cells after 1 hr by Western blot analysis
|
Homo sapiens
|
62.0
nM
|
|
Journal : Bioorg. Med. Chem. Lett.
Title : Recent progress on third generation covalent EGFR inhibitors.
Year : 2016
Volume : 26
Issue : 8
First Page : 1861
Last Page : 1868
Authors : Cheng H, Nair SK, Murray BW.
Abstract : First generation epidermal growth factor receptor (EGFR) tyrosine kinase inhibitors (gefitinib and erlotinib) demonstrate excellent clinical efficacy for NSCLC patients carrying EGFR oncogenic mutations (L858R, del exon 19 deletions between amino acids 746 and 750). Invariable, drug resistance occurs with around 60% of it driven by the EGFR-T790M gatekeeper mutation. To counter the T790M-dependent resistance, third generation covalent EGFR inhibitors have been developed with high potency toward T790M containing mutants and selectivity over WT EGFR. This review provides an overview of the third generation drugs currently in clinical trials and also encompasses novel methodologies developed to discover third generation covalent EGFR drugs.
|
Inhibition of EGFR Del ex19 mutant phosphorylation in human HCC827 cells after 1 hr by Western blot analysis
|
Homo sapiens
|
187.0
nM
|
|
Journal : Bioorg. Med. Chem. Lett.
Title : Recent progress on third generation covalent EGFR inhibitors.
Year : 2016
Volume : 26
Issue : 8
First Page : 1861
Last Page : 1868
Authors : Cheng H, Nair SK, Murray BW.
Abstract : First generation epidermal growth factor receptor (EGFR) tyrosine kinase inhibitors (gefitinib and erlotinib) demonstrate excellent clinical efficacy for NSCLC patients carrying EGFR oncogenic mutations (L858R, del exon 19 deletions between amino acids 746 and 750). Invariable, drug resistance occurs with around 60% of it driven by the EGFR-T790M gatekeeper mutation. To counter the T790M-dependent resistance, third generation covalent EGFR inhibitors have been developed with high potency toward T790M containing mutants and selectivity over WT EGFR. This review provides an overview of the third generation drugs currently in clinical trials and also encompasses novel methodologies developed to discover third generation covalent EGFR drugs.
|
Inhibition of EGFR Del ex19 mutant phosphorylation in human PC9 cells after 1 hr by Western blot analysis
|
Homo sapiens
|
211.0
nM
|
|
Journal : Bioorg. Med. Chem. Lett.
Title : Recent progress on third generation covalent EGFR inhibitors.
Year : 2016
Volume : 26
Issue : 8
First Page : 1861
Last Page : 1868
Authors : Cheng H, Nair SK, Murray BW.
Abstract : First generation epidermal growth factor receptor (EGFR) tyrosine kinase inhibitors (gefitinib and erlotinib) demonstrate excellent clinical efficacy for NSCLC patients carrying EGFR oncogenic mutations (L858R, del exon 19 deletions between amino acids 746 and 750). Invariable, drug resistance occurs with around 60% of it driven by the EGFR-T790M gatekeeper mutation. To counter the T790M-dependent resistance, third generation covalent EGFR inhibitors have been developed with high potency toward T790M containing mutants and selectivity over WT EGFR. This review provides an overview of the third generation drugs currently in clinical trials and also encompasses novel methodologies developed to discover third generation covalent EGFR drugs.
|
Inhibition of EGFR L858R/T790M mutant phosphorylation in human patient derived H1975 cells incubated for 3 hrs by ELISA method
|
Homo sapiens
|
4.1
nM
|
|
Journal : J Med Chem
Title : Discovery of (R,E)-N-(7-Chloro-1-(1-[4-(dimethylamino)but-2-enoyl]azepan-3-yl)-1H-benzo[d]imidazol-2-yl)-2-methylisonicotinamide (EGF816), a Novel, Potent, and WT Sparing Covalent Inhibitor of Oncogenic (L858R, ex19del) and Resistant (T790M) EGFR Mutants for the Treatment of EGFR Mutant Non-Small-Cell Lung Cancers.
Year : 2016
Volume : 59
Issue : 14
First Page : 6671
Last Page : 6689
Authors : Lelais G, Epple R, Marsilje TH, Long YO, McNeill M, Chen B, Lu W, Anumolu J, Badiger S, Bursulaya B, DiDonato M, Fong R, Juarez J, Li J, Manuia M, Mason DE, Gordon P, Groessl T, Johnson K, Jia Y, Kasibhatla S, Li C, Isbell J, Spraggon G, Bender S, Michellys PY.
Abstract : Over the past decade, first and second generation EGFR inhibitors have significantly improved outcomes for lung cancer patients with activating mutations in EGFR. However, both resistance through a secondary T790M mutation at the gatekeeper residue and dose-limiting toxicities from wild-type (WT) EGFR inhibition ultimately limit the full potential of these therapies to control mutant EGFR-driven tumors and new therapies are urgently needed. Herein, we describe our approach toward the discovery of 47 (EGF816, nazartinib), a novel, covalent mutant-selective EGFR inhibitor with equipotent activity on both oncogenic and T790M-resistant EGFR mutations. Through molecular docking studies we converted a mutant-selective high-throughput screening hit (7) into a number of targeted covalent EGFR inhibitors with equipotent activity across mutants EGFR and good WT-EGFR selectivity. We used an abbreviated in vivo efficacy study for prioritizing compounds with good tolerability and efficacy that ultimately led to the selection of 47 as the clinical candidate.
|
Inhibition of EGFR L858R mutant phosphorylation in human patient derived H3255 cells incubated for 3 hrs by ELISA method
|
Homo sapiens
|
13.8
nM
|
|
Journal : J Med Chem
Title : Discovery of (R,E)-N-(7-Chloro-1-(1-[4-(dimethylamino)but-2-enoyl]azepan-3-yl)-1H-benzo[d]imidazol-2-yl)-2-methylisonicotinamide (EGF816), a Novel, Potent, and WT Sparing Covalent Inhibitor of Oncogenic (L858R, ex19del) and Resistant (T790M) EGFR Mutants for the Treatment of EGFR Mutant Non-Small-Cell Lung Cancers.
Year : 2016
Volume : 59
Issue : 14
First Page : 6671
Last Page : 6689
Authors : Lelais G, Epple R, Marsilje TH, Long YO, McNeill M, Chen B, Lu W, Anumolu J, Badiger S, Bursulaya B, DiDonato M, Fong R, Juarez J, Li J, Manuia M, Mason DE, Gordon P, Groessl T, Johnson K, Jia Y, Kasibhatla S, Li C, Isbell J, Spraggon G, Bender S, Michellys PY.
Abstract : Over the past decade, first and second generation EGFR inhibitors have significantly improved outcomes for lung cancer patients with activating mutations in EGFR. However, both resistance through a secondary T790M mutation at the gatekeeper residue and dose-limiting toxicities from wild-type (WT) EGFR inhibition ultimately limit the full potential of these therapies to control mutant EGFR-driven tumors and new therapies are urgently needed. Herein, we describe our approach toward the discovery of 47 (EGF816, nazartinib), a novel, covalent mutant-selective EGFR inhibitor with equipotent activity on both oncogenic and T790M-resistant EGFR mutations. Through molecular docking studies we converted a mutant-selective high-throughput screening hit (7) into a number of targeted covalent EGFR inhibitors with equipotent activity across mutants EGFR and good WT-EGFR selectivity. We used an abbreviated in vivo efficacy study for prioritizing compounds with good tolerability and efficacy that ultimately led to the selection of 47 as the clinical candidate.
|
Inhibition of EGFR E746 to A750 deletion mutant phosphorylation in human patient derived HCC827 cells incubated for 3 hrs by ELISA method
|
Homo sapiens
|
9.5
nM
|
|
Journal : J Med Chem
Title : Discovery of (R,E)-N-(7-Chloro-1-(1-[4-(dimethylamino)but-2-enoyl]azepan-3-yl)-1H-benzo[d]imidazol-2-yl)-2-methylisonicotinamide (EGF816), a Novel, Potent, and WT Sparing Covalent Inhibitor of Oncogenic (L858R, ex19del) and Resistant (T790M) EGFR Mutants for the Treatment of EGFR Mutant Non-Small-Cell Lung Cancers.
Year : 2016
Volume : 59
Issue : 14
First Page : 6671
Last Page : 6689
Authors : Lelais G, Epple R, Marsilje TH, Long YO, McNeill M, Chen B, Lu W, Anumolu J, Badiger S, Bursulaya B, DiDonato M, Fong R, Juarez J, Li J, Manuia M, Mason DE, Gordon P, Groessl T, Johnson K, Jia Y, Kasibhatla S, Li C, Isbell J, Spraggon G, Bender S, Michellys PY.
Abstract : Over the past decade, first and second generation EGFR inhibitors have significantly improved outcomes for lung cancer patients with activating mutations in EGFR. However, both resistance through a secondary T790M mutation at the gatekeeper residue and dose-limiting toxicities from wild-type (WT) EGFR inhibition ultimately limit the full potential of these therapies to control mutant EGFR-driven tumors and new therapies are urgently needed. Herein, we describe our approach toward the discovery of 47 (EGF816, nazartinib), a novel, covalent mutant-selective EGFR inhibitor with equipotent activity on both oncogenic and T790M-resistant EGFR mutations. Through molecular docking studies we converted a mutant-selective high-throughput screening hit (7) into a number of targeted covalent EGFR inhibitors with equipotent activity across mutants EGFR and good WT-EGFR selectivity. We used an abbreviated in vivo efficacy study for prioritizing compounds with good tolerability and efficacy that ultimately led to the selection of 47 as the clinical candidate.
|
Inhibition of wild type EGFR phosphorylation in human HaCaT cells incubated for 3 hrs by ELISA method
|
Homo sapiens
|
262.3
nM
|
|
Journal : J Med Chem
Title : Discovery of (R,E)-N-(7-Chloro-1-(1-[4-(dimethylamino)but-2-enoyl]azepan-3-yl)-1H-benzo[d]imidazol-2-yl)-2-methylisonicotinamide (EGF816), a Novel, Potent, and WT Sparing Covalent Inhibitor of Oncogenic (L858R, ex19del) and Resistant (T790M) EGFR Mutants for the Treatment of EGFR Mutant Non-Small-Cell Lung Cancers.
Year : 2016
Volume : 59
Issue : 14
First Page : 6671
Last Page : 6689
Authors : Lelais G, Epple R, Marsilje TH, Long YO, McNeill M, Chen B, Lu W, Anumolu J, Badiger S, Bursulaya B, DiDonato M, Fong R, Juarez J, Li J, Manuia M, Mason DE, Gordon P, Groessl T, Johnson K, Jia Y, Kasibhatla S, Li C, Isbell J, Spraggon G, Bender S, Michellys PY.
Abstract : Over the past decade, first and second generation EGFR inhibitors have significantly improved outcomes for lung cancer patients with activating mutations in EGFR. However, both resistance through a secondary T790M mutation at the gatekeeper residue and dose-limiting toxicities from wild-type (WT) EGFR inhibition ultimately limit the full potential of these therapies to control mutant EGFR-driven tumors and new therapies are urgently needed. Herein, we describe our approach toward the discovery of 47 (EGF816, nazartinib), a novel, covalent mutant-selective EGFR inhibitor with equipotent activity on both oncogenic and T790M-resistant EGFR mutations. Through molecular docking studies we converted a mutant-selective high-throughput screening hit (7) into a number of targeted covalent EGFR inhibitors with equipotent activity across mutants EGFR and good WT-EGFR selectivity. We used an abbreviated in vivo efficacy study for prioritizing compounds with good tolerability and efficacy that ultimately led to the selection of 47 as the clinical candidate.
|
Inhibition of human recombinant N-terminal GST-tagged wild type EGFR cytoplasmic domain (695 end residues) autophosphorylation expressed in baculovirus infected Sf9 insect cells by ADP-Glo luminescence assay
|
Homo sapiens
|
460.0
nM
|
|
Journal : Bioorg Med Chem
Title : Synthesis and biological evaluation of azole-diphenylpyrimidine derivatives (AzDPPYs) as potent T790M mutant form of epidermal growth factor receptor inhibitors.
Year : 2016
Volume : 24
Issue : 21
First Page : 5505
Last Page : 5512
Authors : Song Z, Jin Y, Ge Y, Wang C, Zhang J, Tang Z, Peng J, Liu K, Li Y, Ma X.
Abstract : A series of novel azole-diphenylpyrimidine derivatives (AzDPPYs) were synthesized and biologically evaluated as potent EGFRT790M inhibitors. Among these analogues, the most active inhibitor 6e not only displayed high activity against EGFRT790M/L858R kinase (IC50=3.3nM), but also was able to repress the replication of H1975 cells harboring EGFRT790M mutation at a concentration of 0.118μmol/L. In contrast to the lead compound rociletinib, 6e slightly reduces the key EGFRT790M-minduced drug resistance. Significantly, inhibitor 6e demonstrates high selectivity (SI=299.3) for T790M-containing EGFR mutants over wild type EGFR, hinting that it will cause less side effects.
|
Inhibition of human recombinant N-terminal GST-tagged EGFR T790M/L858R double mutant cytoplasmic domain (695 end residues) autophosphorylation expressed in baculovirus infected Sf9 insect cells by ADP-Glo luminescence assay
|
Homo sapiens
|
21.5
nM
|
|
Journal : Bioorg Med Chem
Title : Synthesis and biological evaluation of azole-diphenylpyrimidine derivatives (AzDPPYs) as potent T790M mutant form of epidermal growth factor receptor inhibitors.
Year : 2016
Volume : 24
Issue : 21
First Page : 5505
Last Page : 5512
Authors : Song Z, Jin Y, Ge Y, Wang C, Zhang J, Tang Z, Peng J, Liu K, Li Y, Ma X.
Abstract : A series of novel azole-diphenylpyrimidine derivatives (AzDPPYs) were synthesized and biologically evaluated as potent EGFRT790M inhibitors. Among these analogues, the most active inhibitor 6e not only displayed high activity against EGFRT790M/L858R kinase (IC50=3.3nM), but also was able to repress the replication of H1975 cells harboring EGFRT790M mutation at a concentration of 0.118μmol/L. In contrast to the lead compound rociletinib, 6e slightly reduces the key EGFRT790M-minduced drug resistance. Significantly, inhibitor 6e demonstrates high selectivity (SI=299.3) for T790M-containing EGFR mutants over wild type EGFR, hinting that it will cause less side effects.
|
Selectivity index, ratio of IC50 for human recombinant N-terminal GST-tagged wild type EGFR cytoplasmic domain (695 end residues) autophosphorylation expressed in baculovirus infected Sf9 insect cells to IC50 for human recombinant N-terminal GST-tagged EGFR T790M/L858R mutant cytoplasmic domain (695 end residues) autophosphorylation expressed in baculovirus infected Sf9 insect cells
|
Homo sapiens
|
21.4
nM
|
|
Journal : Bioorg Med Chem
Title : Synthesis and biological evaluation of azole-diphenylpyrimidine derivatives (AzDPPYs) as potent T790M mutant form of epidermal growth factor receptor inhibitors.
Year : 2016
Volume : 24
Issue : 21
First Page : 5505
Last Page : 5512
Authors : Song Z, Jin Y, Ge Y, Wang C, Zhang J, Tang Z, Peng J, Liu K, Li Y, Ma X.
Abstract : A series of novel azole-diphenylpyrimidine derivatives (AzDPPYs) were synthesized and biologically evaluated as potent EGFRT790M inhibitors. Among these analogues, the most active inhibitor 6e not only displayed high activity against EGFRT790M/L858R kinase (IC50=3.3nM), but also was able to repress the replication of H1975 cells harboring EGFRT790M mutation at a concentration of 0.118μmol/L. In contrast to the lead compound rociletinib, 6e slightly reduces the key EGFRT790M-minduced drug resistance. Significantly, inhibitor 6e demonstrates high selectivity (SI=299.3) for T790M-containing EGFR mutants over wild type EGFR, hinting that it will cause less side effects.
|
Antiproliferative activity against human NCI-H1975 cells harboring L858R/T790M double mutant after 48 hrs by MTT assay
|
Homo sapiens
|
137.0
nM
|
|
Journal : Bioorg Med Chem
Title : Synthesis and biological evaluation of azole-diphenylpyrimidine derivatives (AzDPPYs) as potent T790M mutant form of epidermal growth factor receptor inhibitors.
Year : 2016
Volume : 24
Issue : 21
First Page : 5505
Last Page : 5512
Authors : Song Z, Jin Y, Ge Y, Wang C, Zhang J, Tang Z, Peng J, Liu K, Li Y, Ma X.
Abstract : A series of novel azole-diphenylpyrimidine derivatives (AzDPPYs) were synthesized and biologically evaluated as potent EGFRT790M inhibitors. Among these analogues, the most active inhibitor 6e not only displayed high activity against EGFRT790M/L858R kinase (IC50=3.3nM), but also was able to repress the replication of H1975 cells harboring EGFRT790M mutation at a concentration of 0.118μmol/L. In contrast to the lead compound rociletinib, 6e slightly reduces the key EGFRT790M-minduced drug resistance. Significantly, inhibitor 6e demonstrates high selectivity (SI=299.3) for T790M-containing EGFR mutants over wild type EGFR, hinting that it will cause less side effects.
|
Kinobeads (epsilon), multiple immobilized ATP-competitive broad spectrum kinase inhibitors, used to assess residual binding of ~300 proteins simultaneously from cell lysate in the presence of a compound. Quantitative readout performed by mass spectrometry.
|
Homo sapiens
|
547.0
nM
|
|
Journal : Science
Title : The target landscape of clinical kinase drugs.
Year : 2017
Volume : 358
Issue : 6367
Authors : Klaeger S, Heinzlmeir S and Wilhelm M et al
Abstract : Kinase inhibitors are important cancer therapeutics. Polypharmacology is commonly observed, requiring thorough target deconvolution to understand drug mechanism of action. Using chemical proteomics, we analyzed the target spectrum of 243 clinically evaluated kinase drugs. The data revealed previously unknown targets for established drugs, offered a perspective on the "druggable" kinome, highlighted (non)kinase off-targets, and suggested potential therapeutic applications. Integration of phosphoproteomic data refined drug-affected pathways, identified response markers, and strengthened rationale for combination treatments. We exemplify translational value by discovering SIK2 (salt-inducible kinase 2) inhibitors that modulate cytokine production in primary cells, by identifying drugs against the lung cancer survival marker MELK (maternal embryonic leucine zipper kinase), and by repurposing cabozantinib to treat FLT3-ITD-positive acute myeloid leukemia. This resource, available via the ProteomicsDB database, should facilitate basic, clinical, and drug discovery research and aid clinical decision-making.
|
Kinobeads (epsilon), multiple immobilized ATP-competitive broad spectrum kinase inhibitors, used to assess residual binding of ~300 proteins simultaneously from cell lysate in the presence of a compound. Quantitative readout performed by mass spectrometry.
|
Homo sapiens
|
651.0
nM
|
|
Journal : Science
Title : The target landscape of clinical kinase drugs.
Year : 2017
Volume : 358
Issue : 6367
Authors : Klaeger S, Heinzlmeir S and Wilhelm M et al
Abstract : Kinase inhibitors are important cancer therapeutics. Polypharmacology is commonly observed, requiring thorough target deconvolution to understand drug mechanism of action. Using chemical proteomics, we analyzed the target spectrum of 243 clinically evaluated kinase drugs. The data revealed previously unknown targets for established drugs, offered a perspective on the "druggable" kinome, highlighted (non)kinase off-targets, and suggested potential therapeutic applications. Integration of phosphoproteomic data refined drug-affected pathways, identified response markers, and strengthened rationale for combination treatments. We exemplify translational value by discovering SIK2 (salt-inducible kinase 2) inhibitors that modulate cytokine production in primary cells, by identifying drugs against the lung cancer survival marker MELK (maternal embryonic leucine zipper kinase), and by repurposing cabozantinib to treat FLT3-ITD-positive acute myeloid leukemia. This resource, available via the ProteomicsDB database, should facilitate basic, clinical, and drug discovery research and aid clinical decision-making.
|
Kinobeads (epsilon), multiple immobilized ATP-competitive broad spectrum kinase inhibitors, used to assess residual binding of ~300 proteins simultaneously from cell lysate in the presence of a compound. Quantitative readout performed by mass spectrometry.
|
Homo sapiens
|
498.0
nM
|
|
Journal : Science
Title : The target landscape of clinical kinase drugs.
Year : 2017
Volume : 358
Issue : 6367
Authors : Klaeger S, Heinzlmeir S and Wilhelm M et al
Abstract : Kinase inhibitors are important cancer therapeutics. Polypharmacology is commonly observed, requiring thorough target deconvolution to understand drug mechanism of action. Using chemical proteomics, we analyzed the target spectrum of 243 clinically evaluated kinase drugs. The data revealed previously unknown targets for established drugs, offered a perspective on the "druggable" kinome, highlighted (non)kinase off-targets, and suggested potential therapeutic applications. Integration of phosphoproteomic data refined drug-affected pathways, identified response markers, and strengthened rationale for combination treatments. We exemplify translational value by discovering SIK2 (salt-inducible kinase 2) inhibitors that modulate cytokine production in primary cells, by identifying drugs against the lung cancer survival marker MELK (maternal embryonic leucine zipper kinase), and by repurposing cabozantinib to treat FLT3-ITD-positive acute myeloid leukemia. This resource, available via the ProteomicsDB database, should facilitate basic, clinical, and drug discovery research and aid clinical decision-making.
|
Kinobeads (epsilon), multiple immobilized ATP-competitive broad spectrum kinase inhibitors, used to assess residual binding of ~300 proteins simultaneously from cell lysate in the presence of a compound. Quantitative readout performed by mass spectrometry.
|
Homo sapiens
|
450.0
nM
|
|
Journal : Science
Title : The target landscape of clinical kinase drugs.
Year : 2017
Volume : 358
Issue : 6367
Authors : Klaeger S, Heinzlmeir S and Wilhelm M et al
Abstract : Kinase inhibitors are important cancer therapeutics. Polypharmacology is commonly observed, requiring thorough target deconvolution to understand drug mechanism of action. Using chemical proteomics, we analyzed the target spectrum of 243 clinically evaluated kinase drugs. The data revealed previously unknown targets for established drugs, offered a perspective on the "druggable" kinome, highlighted (non)kinase off-targets, and suggested potential therapeutic applications. Integration of phosphoproteomic data refined drug-affected pathways, identified response markers, and strengthened rationale for combination treatments. We exemplify translational value by discovering SIK2 (salt-inducible kinase 2) inhibitors that modulate cytokine production in primary cells, by identifying drugs against the lung cancer survival marker MELK (maternal embryonic leucine zipper kinase), and by repurposing cabozantinib to treat FLT3-ITD-positive acute myeloid leukemia. This resource, available via the ProteomicsDB database, should facilitate basic, clinical, and drug discovery research and aid clinical decision-making.
|
Kinobeads (epsilon), multiple immobilized ATP-competitive broad spectrum kinase inhibitors, used to assess residual binding of ~300 proteins simultaneously from cell lysate in the presence of a compound. Quantitative readout performed by mass spectrometry.
|
Homo sapiens
|
433.0
nM
|
|
Journal : Science
Title : The target landscape of clinical kinase drugs.
Year : 2017
Volume : 358
Issue : 6367
Authors : Klaeger S, Heinzlmeir S and Wilhelm M et al
Abstract : Kinase inhibitors are important cancer therapeutics. Polypharmacology is commonly observed, requiring thorough target deconvolution to understand drug mechanism of action. Using chemical proteomics, we analyzed the target spectrum of 243 clinically evaluated kinase drugs. The data revealed previously unknown targets for established drugs, offered a perspective on the "druggable" kinome, highlighted (non)kinase off-targets, and suggested potential therapeutic applications. Integration of phosphoproteomic data refined drug-affected pathways, identified response markers, and strengthened rationale for combination treatments. We exemplify translational value by discovering SIK2 (salt-inducible kinase 2) inhibitors that modulate cytokine production in primary cells, by identifying drugs against the lung cancer survival marker MELK (maternal embryonic leucine zipper kinase), and by repurposing cabozantinib to treat FLT3-ITD-positive acute myeloid leukemia. This resource, available via the ProteomicsDB database, should facilitate basic, clinical, and drug discovery research and aid clinical decision-making.
|
Kinobeads (epsilon), multiple immobilized ATP-competitive broad spectrum kinase inhibitors, used to assess residual binding of ~300 proteins simultaneously from cell lysate in the presence of a compound. Quantitative readout performed by mass spectrometry.
|
Homo sapiens
|
288.0
nM
|
|
Journal : Science
Title : The target landscape of clinical kinase drugs.
Year : 2017
Volume : 358
Issue : 6367
Authors : Klaeger S, Heinzlmeir S and Wilhelm M et al
Abstract : Kinase inhibitors are important cancer therapeutics. Polypharmacology is commonly observed, requiring thorough target deconvolution to understand drug mechanism of action. Using chemical proteomics, we analyzed the target spectrum of 243 clinically evaluated kinase drugs. The data revealed previously unknown targets for established drugs, offered a perspective on the "druggable" kinome, highlighted (non)kinase off-targets, and suggested potential therapeutic applications. Integration of phosphoproteomic data refined drug-affected pathways, identified response markers, and strengthened rationale for combination treatments. We exemplify translational value by discovering SIK2 (salt-inducible kinase 2) inhibitors that modulate cytokine production in primary cells, by identifying drugs against the lung cancer survival marker MELK (maternal embryonic leucine zipper kinase), and by repurposing cabozantinib to treat FLT3-ITD-positive acute myeloid leukemia. This resource, available via the ProteomicsDB database, should facilitate basic, clinical, and drug discovery research and aid clinical decision-making.
|
Kinobeads (epsilon), multiple immobilized ATP-competitive broad spectrum kinase inhibitors, used to assess residual binding of ~300 proteins simultaneously from cell lysate in the presence of a compound. Quantitative readout performed by mass spectrometry.
|
Homo sapiens
|
289.0
nM
|
|
Journal : Science
Title : The target landscape of clinical kinase drugs.
Year : 2017
Volume : 358
Issue : 6367
Authors : Klaeger S, Heinzlmeir S and Wilhelm M et al
Abstract : Kinase inhibitors are important cancer therapeutics. Polypharmacology is commonly observed, requiring thorough target deconvolution to understand drug mechanism of action. Using chemical proteomics, we analyzed the target spectrum of 243 clinically evaluated kinase drugs. The data revealed previously unknown targets for established drugs, offered a perspective on the "druggable" kinome, highlighted (non)kinase off-targets, and suggested potential therapeutic applications. Integration of phosphoproteomic data refined drug-affected pathways, identified response markers, and strengthened rationale for combination treatments. We exemplify translational value by discovering SIK2 (salt-inducible kinase 2) inhibitors that modulate cytokine production in primary cells, by identifying drugs against the lung cancer survival marker MELK (maternal embryonic leucine zipper kinase), and by repurposing cabozantinib to treat FLT3-ITD-positive acute myeloid leukemia. This resource, available via the ProteomicsDB database, should facilitate basic, clinical, and drug discovery research and aid clinical decision-making.
|
Inhibition of N-terminal 6His/TEV protease cleavage site-tagged wild type human EGFR using poly (Glu,Tyr) 4:1 as substrate after 1 hr by ELISA
|
Homo sapiens
|
344.3
nM
|
|
Journal : Eur J Med Chem
Title : A structure-guided optimization of pyrido[2,3-d]pyrimidin-7-ones as selective inhibitors of EGFRL858R/T790M mutant with improved pharmacokinetic properties.
Year : 2017
Volume : 126
First Page : 1107
Last Page : 1117
Authors : Yu L, Huang M, Xu T, Tong L, Yan XE, Zhang Z, Xu Y, Yun C, Xie H, Ding K, Lu X.
Abstract : Structural optimization of pyrido[2,3-d]pyrimidin-7-ones was conducted to yield a series of new selective EGFRT790M inhibitors with improved pharmacokinetic properties. One of the most promising compound 9s potently suppressed EGFRL858R/T790M kinase and inhibited the proliferation of H1975 cells with IC50 values of 2.0 nM and 40 nM, respectively. The compound dose-dependently induced reduction of the phosphorylation of EGFR and downstream activation of ERK in NCIH1975 cells. It also exhibited moderate plasma exposure after oral administration and an oral bioavailability value of 16%. Compound 9s may serve as a promising lead compound for further drug discovery overcoming the acquired resistance of non-small cell lung cancer (NSCLC) patients.
|
Inhibition of N-terminal 6His/TEV protease cleavage site-tagged human EGFR L858R/T790M double mutant (696 to 1022 residues) using poly (Glu,Tyr) 4:1 as substrate after 1 hr by ELISA
|
Homo sapiens
|
4.3
nM
|
|
Journal : Eur J Med Chem
Title : A structure-guided optimization of pyrido[2,3-d]pyrimidin-7-ones as selective inhibitors of EGFRL858R/T790M mutant with improved pharmacokinetic properties.
Year : 2017
Volume : 126
First Page : 1107
Last Page : 1117
Authors : Yu L, Huang M, Xu T, Tong L, Yan XE, Zhang Z, Xu Y, Yun C, Xie H, Ding K, Lu X.
Abstract : Structural optimization of pyrido[2,3-d]pyrimidin-7-ones was conducted to yield a series of new selective EGFRT790M inhibitors with improved pharmacokinetic properties. One of the most promising compound 9s potently suppressed EGFRL858R/T790M kinase and inhibited the proliferation of H1975 cells with IC50 values of 2.0 nM and 40 nM, respectively. The compound dose-dependently induced reduction of the phosphorylation of EGFR and downstream activation of ERK in NCIH1975 cells. It also exhibited moderate plasma exposure after oral administration and an oral bioavailability value of 16%. Compound 9s may serve as a promising lead compound for further drug discovery overcoming the acquired resistance of non-small cell lung cancer (NSCLC) patients.
|
Antiproliferative activity against human NCI-H1975 cells harboring EGFR L858R/T790M double mutant after 72 hrs by SRB assay
|
Homo sapiens
|
42.0
nM
|
|
Journal : Eur J Med Chem
Title : A structure-guided optimization of pyrido[2,3-d]pyrimidin-7-ones as selective inhibitors of EGFRL858R/T790M mutant with improved pharmacokinetic properties.
Year : 2017
Volume : 126
First Page : 1107
Last Page : 1117
Authors : Yu L, Huang M, Xu T, Tong L, Yan XE, Zhang Z, Xu Y, Yun C, Xie H, Ding K, Lu X.
Abstract : Structural optimization of pyrido[2,3-d]pyrimidin-7-ones was conducted to yield a series of new selective EGFRT790M inhibitors with improved pharmacokinetic properties. One of the most promising compound 9s potently suppressed EGFRL858R/T790M kinase and inhibited the proliferation of H1975 cells with IC50 values of 2.0 nM and 40 nM, respectively. The compound dose-dependently induced reduction of the phosphorylation of EGFR and downstream activation of ERK in NCIH1975 cells. It also exhibited moderate plasma exposure after oral administration and an oral bioavailability value of 16%. Compound 9s may serve as a promising lead compound for further drug discovery overcoming the acquired resistance of non-small cell lung cancer (NSCLC) patients.
|
Inhibition of EGFR delE746_A750 mutant in human HCC827 cells assessed as reduction in cell viability after 96 hrs by CellTiterGlo assay
|
Homo sapiens
|
45.0
nM
|
|
Journal : J Med Chem
Title : Indazole-Based Covalent Inhibitors To Target Drug-Resistant Epidermal Growth Factor Receptor.
Year : 2017
Volume : 60
Issue : 6
First Page : 2361
Last Page : 2372
Authors : Tomassi S, Lategahn J, Engel J, Keul M, Tumbrink HL, Ketzer J, Mühlenberg T, Baumann M, Schultz-Fademrecht C, Bauer S, Rauh D.
Abstract : The specific targeting of oncogenic mutant epidermal growth factor receptor (EGFR) is a breakthrough in targeted cancer therapy and marks a drastic change in the treatment of non-small cell lung cancer (NSCLC). The recurrent emergence of resistance to these targeted drugs requires the development of novel chemical entities that efficiently inhibit drug-resistant EGFR. Herein, we report the optimization process for a hit compound that has emerged from a phenotypic screen resulting in indazole-based compounds. These inhibitors are conformationally less flexible, target gatekeeper mutated drug-resistant EGFR-L858R/T790M, and covalently alkylate Cys797. Western blot analysis, as well as characterization of the binding kinetics and kinase selectivity profiling, substantiates our approach of targeting drug-resistant EGFR-L858R/T790M with inhibitors incorporating the indazole as hinge binder.
|
Inhibition of wild-type human N-terminal GST-tagged EGFR cytoplasmic domain (669 to 1210 end amino acid residues) expressed in baculovirus expression system using TK peptide substrate preincubated with enzyme for 30 mins followed by substrate addition measured after 25 mins by HTRF assay
|
Homo sapiens
|
1.7
nM
|
|
Journal : J Med Chem
Title : Indazole-Based Covalent Inhibitors To Target Drug-Resistant Epidermal Growth Factor Receptor.
Year : 2017
Volume : 60
Issue : 6
First Page : 2361
Last Page : 2372
Authors : Tomassi S, Lategahn J, Engel J, Keul M, Tumbrink HL, Ketzer J, Mühlenberg T, Baumann M, Schultz-Fademrecht C, Bauer S, Rauh D.
Abstract : The specific targeting of oncogenic mutant epidermal growth factor receptor (EGFR) is a breakthrough in targeted cancer therapy and marks a drastic change in the treatment of non-small cell lung cancer (NSCLC). The recurrent emergence of resistance to these targeted drugs requires the development of novel chemical entities that efficiently inhibit drug-resistant EGFR. Herein, we report the optimization process for a hit compound that has emerged from a phenotypic screen resulting in indazole-based compounds. These inhibitors are conformationally less flexible, target gatekeeper mutated drug-resistant EGFR-L858R/T790M, and covalently alkylate Cys797. Western blot analysis, as well as characterization of the binding kinetics and kinase selectivity profiling, substantiates our approach of targeting drug-resistant EGFR-L858R/T790M with inhibitors incorporating the indazole as hinge binder.
|
Inhibition of human N-terminal GST-tagged EGFR L858R mutant cytoplasmic domain (669 to 1210 end amino acid residues) expressed in baculovirus expression system using TK peptide substrate preincubated with enzyme for 30 mins followed by substrate addition measured after 15 mins by HTRF assay
|
Homo sapiens
|
1.6
nM
|
|
Journal : J Med Chem
Title : Indazole-Based Covalent Inhibitors To Target Drug-Resistant Epidermal Growth Factor Receptor.
Year : 2017
Volume : 60
Issue : 6
First Page : 2361
Last Page : 2372
Authors : Tomassi S, Lategahn J, Engel J, Keul M, Tumbrink HL, Ketzer J, Mühlenberg T, Baumann M, Schultz-Fademrecht C, Bauer S, Rauh D.
Abstract : The specific targeting of oncogenic mutant epidermal growth factor receptor (EGFR) is a breakthrough in targeted cancer therapy and marks a drastic change in the treatment of non-small cell lung cancer (NSCLC). The recurrent emergence of resistance to these targeted drugs requires the development of novel chemical entities that efficiently inhibit drug-resistant EGFR. Herein, we report the optimization process for a hit compound that has emerged from a phenotypic screen resulting in indazole-based compounds. These inhibitors are conformationally less flexible, target gatekeeper mutated drug-resistant EGFR-L858R/T790M, and covalently alkylate Cys797. Western blot analysis, as well as characterization of the binding kinetics and kinase selectivity profiling, substantiates our approach of targeting drug-resistant EGFR-L858R/T790M with inhibitors incorporating the indazole as hinge binder.
|
Inhibition of human N-terminal GST-tagged EGFR L858R/T790M double mutant cytoplasmic domain (669 to 1210 end amino acid residues) expressed in baculovirus expression system using TK peptide substrate preincubated with enzyme for 30 mins followed by substrate addition measured after 20 mins by HTRF assay
|
Homo sapiens
|
2.6
nM
|
|
Journal : J Med Chem
Title : Indazole-Based Covalent Inhibitors To Target Drug-Resistant Epidermal Growth Factor Receptor.
Year : 2017
Volume : 60
Issue : 6
First Page : 2361
Last Page : 2372
Authors : Tomassi S, Lategahn J, Engel J, Keul M, Tumbrink HL, Ketzer J, Mühlenberg T, Baumann M, Schultz-Fademrecht C, Bauer S, Rauh D.
Abstract : The specific targeting of oncogenic mutant epidermal growth factor receptor (EGFR) is a breakthrough in targeted cancer therapy and marks a drastic change in the treatment of non-small cell lung cancer (NSCLC). The recurrent emergence of resistance to these targeted drugs requires the development of novel chemical entities that efficiently inhibit drug-resistant EGFR. Herein, we report the optimization process for a hit compound that has emerged from a phenotypic screen resulting in indazole-based compounds. These inhibitors are conformationally less flexible, target gatekeeper mutated drug-resistant EGFR-L858R/T790M, and covalently alkylate Cys797. Western blot analysis, as well as characterization of the binding kinetics and kinase selectivity profiling, substantiates our approach of targeting drug-resistant EGFR-L858R/T790M with inhibitors incorporating the indazole as hinge binder.
|
Inhibition of EGFR L858R/T790M double mutant in human NCI-H1975 cells assessed as reduction in cell viability after 96 hrs by CellTiterGlo assay
|
Homo sapiens
|
118.0
nM
|
|
Journal : J Med Chem
Title : Indazole-Based Covalent Inhibitors To Target Drug-Resistant Epidermal Growth Factor Receptor.
Year : 2017
Volume : 60
Issue : 6
First Page : 2361
Last Page : 2372
Authors : Tomassi S, Lategahn J, Engel J, Keul M, Tumbrink HL, Ketzer J, Mühlenberg T, Baumann M, Schultz-Fademrecht C, Bauer S, Rauh D.
Abstract : The specific targeting of oncogenic mutant epidermal growth factor receptor (EGFR) is a breakthrough in targeted cancer therapy and marks a drastic change in the treatment of non-small cell lung cancer (NSCLC). The recurrent emergence of resistance to these targeted drugs requires the development of novel chemical entities that efficiently inhibit drug-resistant EGFR. Herein, we report the optimization process for a hit compound that has emerged from a phenotypic screen resulting in indazole-based compounds. These inhibitors are conformationally less flexible, target gatekeeper mutated drug-resistant EGFR-L858R/T790M, and covalently alkylate Cys797. Western blot analysis, as well as characterization of the binding kinetics and kinase selectivity profiling, substantiates our approach of targeting drug-resistant EGFR-L858R/T790M with inhibitors incorporating the indazole as hinge binder.
|
Reversible inhibition of wild-type human N-terminal GST-tagged EGFR cytoplasmic domain (669 to 1210 end amino acid residues) expressed in baculovirus expression system using TK peptide substrate preincubated for 2 to 90 mins followed by 6-fold dilution
|
Homo sapiens
|
74.0
nM
|
|
Journal : J Med Chem
Title : Indazole-Based Covalent Inhibitors To Target Drug-Resistant Epidermal Growth Factor Receptor.
Year : 2017
Volume : 60
Issue : 6
First Page : 2361
Last Page : 2372
Authors : Tomassi S, Lategahn J, Engel J, Keul M, Tumbrink HL, Ketzer J, Mühlenberg T, Baumann M, Schultz-Fademrecht C, Bauer S, Rauh D.
Abstract : The specific targeting of oncogenic mutant epidermal growth factor receptor (EGFR) is a breakthrough in targeted cancer therapy and marks a drastic change in the treatment of non-small cell lung cancer (NSCLC). The recurrent emergence of resistance to these targeted drugs requires the development of novel chemical entities that efficiently inhibit drug-resistant EGFR. Herein, we report the optimization process for a hit compound that has emerged from a phenotypic screen resulting in indazole-based compounds. These inhibitors are conformationally less flexible, target gatekeeper mutated drug-resistant EGFR-L858R/T790M, and covalently alkylate Cys797. Western blot analysis, as well as characterization of the binding kinetics and kinase selectivity profiling, substantiates our approach of targeting drug-resistant EGFR-L858R/T790M with inhibitors incorporating the indazole as hinge binder.
|
Reversible inhibition of human N-terminal GST-tagged EGFR L858R mutant cytoplasmic domain (669 to 1210 end amino acid residues) expressed in baculovirus expression system using TK peptide substrate preincubated for 2 to 90 mins followed by 6-fold dilution
|
Homo sapiens
|
1.8
nM
|
|
Journal : J Med Chem
Title : Indazole-Based Covalent Inhibitors To Target Drug-Resistant Epidermal Growth Factor Receptor.
Year : 2017
Volume : 60
Issue : 6
First Page : 2361
Last Page : 2372
Authors : Tomassi S, Lategahn J, Engel J, Keul M, Tumbrink HL, Ketzer J, Mühlenberg T, Baumann M, Schultz-Fademrecht C, Bauer S, Rauh D.
Abstract : The specific targeting of oncogenic mutant epidermal growth factor receptor (EGFR) is a breakthrough in targeted cancer therapy and marks a drastic change in the treatment of non-small cell lung cancer (NSCLC). The recurrent emergence of resistance to these targeted drugs requires the development of novel chemical entities that efficiently inhibit drug-resistant EGFR. Herein, we report the optimization process for a hit compound that has emerged from a phenotypic screen resulting in indazole-based compounds. These inhibitors are conformationally less flexible, target gatekeeper mutated drug-resistant EGFR-L858R/T790M, and covalently alkylate Cys797. Western blot analysis, as well as characterization of the binding kinetics and kinase selectivity profiling, substantiates our approach of targeting drug-resistant EGFR-L858R/T790M with inhibitors incorporating the indazole as hinge binder.
|
Reversible inhibition of human N-terminal GST-tagged EGFR L858R/T790M double mutant cytoplasmic domain (669 to 1210 end amino acid residues) expressed in baculovirus expression system using TK peptide substrate preincubated for 2 to 90 mins followed by 6-fold dilution
|
Homo sapiens
|
1.7
nM
|
|
Journal : J Med Chem
Title : Indazole-Based Covalent Inhibitors To Target Drug-Resistant Epidermal Growth Factor Receptor.
Year : 2017
Volume : 60
Issue : 6
First Page : 2361
Last Page : 2372
Authors : Tomassi S, Lategahn J, Engel J, Keul M, Tumbrink HL, Ketzer J, Mühlenberg T, Baumann M, Schultz-Fademrecht C, Bauer S, Rauh D.
Abstract : The specific targeting of oncogenic mutant epidermal growth factor receptor (EGFR) is a breakthrough in targeted cancer therapy and marks a drastic change in the treatment of non-small cell lung cancer (NSCLC). The recurrent emergence of resistance to these targeted drugs requires the development of novel chemical entities that efficiently inhibit drug-resistant EGFR. Herein, we report the optimization process for a hit compound that has emerged from a phenotypic screen resulting in indazole-based compounds. These inhibitors are conformationally less flexible, target gatekeeper mutated drug-resistant EGFR-L858R/T790M, and covalently alkylate Cys797. Western blot analysis, as well as characterization of the binding kinetics and kinase selectivity profiling, substantiates our approach of targeting drug-resistant EGFR-L858R/T790M with inhibitors incorporating the indazole as hinge binder.
|
Binding affinity to N-terminal GST-tagged recombinant human EGFR L858R/T790M double mutant (668 to 1210 residues) cytoplasmic domain expressed in baculovirus expression system
|
Homo sapiens
|
21.0
nM
|
|
Journal : J Med Chem
Title : Covalent Modifiers: A Chemical Perspective on the Reactivity of α,β-Unsaturated Carbonyls with Thiols via Hetero-Michael Addition Reactions.
Year : 2017
Volume : 60
Issue : 3
First Page : 839
Last Page : 885
Authors : Jackson PA, Widen JC, Harki DA, Brummond KM.
Abstract : Although Michael acceptors display a potent and broad spectrum of bioactivity, they have largely been ignored in drug discovery because of their presumed indiscriminate reactivity. As such, a dearth of information exists relevant to the thiol reactivity of natural products and their analogues possessing this moiety. In the midst of recently approved acrylamide-containing drugs, it is clear that a good understanding of the hetero-Michael addition reaction and the relative reactivities of biological thiols with Michael acceptors under physiological conditions is needed for the design and use of these compounds as biological tools and potential therapeutics. This Perspective provides information that will contribute to this understanding, such as kinetics of thiol addition reactions, bioactivities, as well as steric and electronic factors that influence the electrophilicity and reversibility of Michael acceptors. This Perspective is focused on α,β-unsaturated carbonyls given their preponderance in bioactive natural products.
|
Binding affinity to recombinant human GST-tagged EGFR (668 to 1210 residues) cytoplasmic domain expressed in baculovirus expression system
|
Homo sapiens
|
303.0
nM
|
|
Journal : J Med Chem
Title : Covalent Modifiers: A Chemical Perspective on the Reactivity of α,β-Unsaturated Carbonyls with Thiols via Hetero-Michael Addition Reactions.
Year : 2017
Volume : 60
Issue : 3
First Page : 839
Last Page : 885
Authors : Jackson PA, Widen JC, Harki DA, Brummond KM.
Abstract : Although Michael acceptors display a potent and broad spectrum of bioactivity, they have largely been ignored in drug discovery because of their presumed indiscriminate reactivity. As such, a dearth of information exists relevant to the thiol reactivity of natural products and their analogues possessing this moiety. In the midst of recently approved acrylamide-containing drugs, it is clear that a good understanding of the hetero-Michael addition reaction and the relative reactivities of biological thiols with Michael acceptors under physiological conditions is needed for the design and use of these compounds as biological tools and potential therapeutics. This Perspective provides information that will contribute to this understanding, such as kinetics of thiol addition reactions, bioactivities, as well as steric and electronic factors that influence the electrophilicity and reversibility of Michael acceptors. This Perspective is focused on α,β-unsaturated carbonyls given their preponderance in bioactive natural products.
|
Inhibition of recombinant wild type human EGFR (695 to end residues) using Poly (4:1 Glu, Tyr) as substrate after 1 hr by ADP-Glo assay
|
Homo sapiens
|
460.2
nM
|
|
Journal : Bioorg Med Chem
Title : C-2 (E)-4-(Styryl)aniline substituted diphenylpyrimidine derivatives (Sty-DPPYs) as specific kinase inhibitors targeting clinical resistance related EGFRT790M mutant.
Year : 2017
Volume : 25
Issue : 10
First Page : 2724
Last Page : 2729
Authors : Song A, Zhang J, Ge Y, Wang C, Meng Q, Tang Z, Peng J, Liu K, Li Y, Ma X.
Abstract : With the aim to overcome the drug resistance induced by the EGFR T790M mutation (EGFRT790M), herein, a family of diphenylpyrimidine derivatives (Sty-DPPYs) bearing a C-2 (E)-4-(styryl)aniline functionality were designed and synthesized as potential EGFRT790M inhibitors. Among them, the compound 10e displayed strong potency against the EGFRT790M enzyme, with the IC50 of 11.0nM. Compound 10e also showed a higher SI value (SI=49.0) than rociletinib (SI=21.4), indicating its less side effect. In addition, compound 10e could effectively inhibit the proliferation of H1975 cells harboring the EGFRT790M mutation, within the concentration of 2.91μM. Significantly, compound 10e has low toxicity against the normal HBE cell (IC50=22.48μM). This work provided new insights into the discovery of potent and selective inhibitor against EGFRT790M over wild-type (EGFRWT).
|
Inhibition of recombinant human EGFR T790M/L858R double mutant (695 to end residues) using Poly (4:1 Glu, Tyr) as substrate after 1 hr by ADP-Glo assay
|
Homo sapiens
|
21.5
nM
|
|
Journal : Bioorg Med Chem
Title : C-2 (E)-4-(Styryl)aniline substituted diphenylpyrimidine derivatives (Sty-DPPYs) as specific kinase inhibitors targeting clinical resistance related EGFRT790M mutant.
Year : 2017
Volume : 25
Issue : 10
First Page : 2724
Last Page : 2729
Authors : Song A, Zhang J, Ge Y, Wang C, Meng Q, Tang Z, Peng J, Liu K, Li Y, Ma X.
Abstract : With the aim to overcome the drug resistance induced by the EGFR T790M mutation (EGFRT790M), herein, a family of diphenylpyrimidine derivatives (Sty-DPPYs) bearing a C-2 (E)-4-(styryl)aniline functionality were designed and synthesized as potential EGFRT790M inhibitors. Among them, the compound 10e displayed strong potency against the EGFRT790M enzyme, with the IC50 of 11.0nM. Compound 10e also showed a higher SI value (SI=49.0) than rociletinib (SI=21.4), indicating its less side effect. In addition, compound 10e could effectively inhibit the proliferation of H1975 cells harboring the EGFRT790M mutation, within the concentration of 2.91μM. Significantly, compound 10e has low toxicity against the normal HBE cell (IC50=22.48μM). This work provided new insights into the discovery of potent and selective inhibitor against EGFRT790M over wild-type (EGFRWT).
|
Antiproliferative activity against human NCI-H1975 cells harboring EGFR T790M/L858R double mutant assessed as decrease in cell viability after 72 hrs by MTT assay
|
Homo sapiens
|
137.0
nM
|
|
Journal : Bioorg Med Chem
Title : C-2 (E)-4-(Styryl)aniline substituted diphenylpyrimidine derivatives (Sty-DPPYs) as specific kinase inhibitors targeting clinical resistance related EGFRT790M mutant.
Year : 2017
Volume : 25
Issue : 10
First Page : 2724
Last Page : 2729
Authors : Song A, Zhang J, Ge Y, Wang C, Meng Q, Tang Z, Peng J, Liu K, Li Y, Ma X.
Abstract : With the aim to overcome the drug resistance induced by the EGFR T790M mutation (EGFRT790M), herein, a family of diphenylpyrimidine derivatives (Sty-DPPYs) bearing a C-2 (E)-4-(styryl)aniline functionality were designed and synthesized as potential EGFRT790M inhibitors. Among them, the compound 10e displayed strong potency against the EGFRT790M enzyme, with the IC50 of 11.0nM. Compound 10e also showed a higher SI value (SI=49.0) than rociletinib (SI=21.4), indicating its less side effect. In addition, compound 10e could effectively inhibit the proliferation of H1975 cells harboring the EGFRT790M mutation, within the concentration of 2.91μM. Significantly, compound 10e has low toxicity against the normal HBE cell (IC50=22.48μM). This work provided new insights into the discovery of potent and selective inhibitor against EGFRT790M over wild-type (EGFRWT).
|
Antiproliferative activity against human HCC827 cells harboring EGFR del E746 to A750 mutant assessed as decrease in cell viability after 72 hrs by MTT assay
|
Homo sapiens
|
31.0
nM
|
|
Journal : Bioorg Med Chem
Title : C-2 (E)-4-(Styryl)aniline substituted diphenylpyrimidine derivatives (Sty-DPPYs) as specific kinase inhibitors targeting clinical resistance related EGFRT790M mutant.
Year : 2017
Volume : 25
Issue : 10
First Page : 2724
Last Page : 2729
Authors : Song A, Zhang J, Ge Y, Wang C, Meng Q, Tang Z, Peng J, Liu K, Li Y, Ma X.
Abstract : With the aim to overcome the drug resistance induced by the EGFR T790M mutation (EGFRT790M), herein, a family of diphenylpyrimidine derivatives (Sty-DPPYs) bearing a C-2 (E)-4-(styryl)aniline functionality were designed and synthesized as potential EGFRT790M inhibitors. Among them, the compound 10e displayed strong potency against the EGFRT790M enzyme, with the IC50 of 11.0nM. Compound 10e also showed a higher SI value (SI=49.0) than rociletinib (SI=21.4), indicating its less side effect. In addition, compound 10e could effectively inhibit the proliferation of H1975 cells harboring the EGFRT790M mutation, within the concentration of 2.91μM. Significantly, compound 10e has low toxicity against the normal HBE cell (IC50=22.48μM). This work provided new insights into the discovery of potent and selective inhibitor against EGFRT790M over wild-type (EGFRWT).
|
Inhibition of wild type N-terminal GST-fused human EGFR cytoplasmic domain expressed in baculovirus expression system preincubated for 30 mins followed by ATP and TK-substrate addition measured after 25 mins by HTRF assay
|
Homo sapiens
|
2.0
nM
|
|
Journal : J Med Chem
Title : Structure-Guided Development of Covalent and Mutant-Selective Pyrazolopyrimidines to Target T790M Drug Resistance in Epidermal Growth Factor Receptor.
Year : 2017
Volume : 60
Issue : 18
First Page : 7725
Last Page : 7744
Authors : Engel J, Smith S, Lategahn J, Tumbrink HL, Goebel L, Becker C, Hennes E, Keul M, Unger A, Müller H, Baumann M, Schultz-Fademrecht C, Günther G, Hengstler JG, Rauh D.
Abstract : Reversible epidermal growth factor receptor (EGFR) inhibitors prompt a beneficial clinical response in non-small cell lung cancer patients who harbor activating mutations in EGFR. However, resistance mutations, particularly the gatekeeper mutation T790M, limit this efficacy. Here, we describe a structure-guided development of a series of covalent and mutant-selective EGFR inhibitors that effectively target the T790M mutant. The pyrazolopyrimidine-based core differs structurally from that of aminopyrimidine-based third-generation EGFR inhibitors and therefore constitutes a new set of inhibitors that target this mechanism of drug resistance. These inhibitors exhibited strong inhibitory effects toward EGFR kinase activity and excellent inhibition of cell growth in the drug-resistant cell line H1975, without significantly affecting EGFR wild-type cell lines. Additionally, we present the in vitro ADME/DMPK parameters for a subset of the inhibitors as well as in vivo pharmacokinetics in mice for a candidate with promising activity profile.
|
Inhibition of human recombinant GST-tagged EGFR L858R mutant expressed in baculovirus expression system preincubated for 30 mins followed by ATP and TK-substrate addition measured after 15 mins by HTRF assay
|
Homo sapiens
|
2.0
nM
|
|
Journal : J Med Chem
Title : Structure-Guided Development of Covalent and Mutant-Selective Pyrazolopyrimidines to Target T790M Drug Resistance in Epidermal Growth Factor Receptor.
Year : 2017
Volume : 60
Issue : 18
First Page : 7725
Last Page : 7744
Authors : Engel J, Smith S, Lategahn J, Tumbrink HL, Goebel L, Becker C, Hennes E, Keul M, Unger A, Müller H, Baumann M, Schultz-Fademrecht C, Günther G, Hengstler JG, Rauh D.
Abstract : Reversible epidermal growth factor receptor (EGFR) inhibitors prompt a beneficial clinical response in non-small cell lung cancer patients who harbor activating mutations in EGFR. However, resistance mutations, particularly the gatekeeper mutation T790M, limit this efficacy. Here, we describe a structure-guided development of a series of covalent and mutant-selective EGFR inhibitors that effectively target the T790M mutant. The pyrazolopyrimidine-based core differs structurally from that of aminopyrimidine-based third-generation EGFR inhibitors and therefore constitutes a new set of inhibitors that target this mechanism of drug resistance. These inhibitors exhibited strong inhibitory effects toward EGFR kinase activity and excellent inhibition of cell growth in the drug-resistant cell line H1975, without significantly affecting EGFR wild-type cell lines. Additionally, we present the in vitro ADME/DMPK parameters for a subset of the inhibitors as well as in vivo pharmacokinetics in mice for a candidate with promising activity profile.
|
Inhibition of recombinant human GST-tagged EGFR L858R/T790M double mutant expressed in baculovirus expression system preincubated for 30 mins followed by ATP and TK-substrate addition measured after 20 mins by HTRF assay
|
Homo sapiens
|
3.0
nM
|
|
Journal : J Med Chem
Title : Structure-Guided Development of Covalent and Mutant-Selective Pyrazolopyrimidines to Target T790M Drug Resistance in Epidermal Growth Factor Receptor.
Year : 2017
Volume : 60
Issue : 18
First Page : 7725
Last Page : 7744
Authors : Engel J, Smith S, Lategahn J, Tumbrink HL, Goebel L, Becker C, Hennes E, Keul M, Unger A, Müller H, Baumann M, Schultz-Fademrecht C, Günther G, Hengstler JG, Rauh D.
Abstract : Reversible epidermal growth factor receptor (EGFR) inhibitors prompt a beneficial clinical response in non-small cell lung cancer patients who harbor activating mutations in EGFR. However, resistance mutations, particularly the gatekeeper mutation T790M, limit this efficacy. Here, we describe a structure-guided development of a series of covalent and mutant-selective EGFR inhibitors that effectively target the T790M mutant. The pyrazolopyrimidine-based core differs structurally from that of aminopyrimidine-based third-generation EGFR inhibitors and therefore constitutes a new set of inhibitors that target this mechanism of drug resistance. These inhibitors exhibited strong inhibitory effects toward EGFR kinase activity and excellent inhibition of cell growth in the drug-resistant cell line H1975, without significantly affecting EGFR wild-type cell lines. Additionally, we present the in vitro ADME/DMPK parameters for a subset of the inhibitors as well as in vivo pharmacokinetics in mice for a candidate with promising activity profile.
|
Antiproliferative activity against human HCC827 cells harboring EGFR-delE746_A750 mutant incubated for 96 hrs measured on day 5 by CellTiterGlo assay
|
Homo sapiens
|
45.0
nM
|
|
Journal : J Med Chem
Title : Structure-Guided Development of Covalent and Mutant-Selective Pyrazolopyrimidines to Target T790M Drug Resistance in Epidermal Growth Factor Receptor.
Year : 2017
Volume : 60
Issue : 18
First Page : 7725
Last Page : 7744
Authors : Engel J, Smith S, Lategahn J, Tumbrink HL, Goebel L, Becker C, Hennes E, Keul M, Unger A, Müller H, Baumann M, Schultz-Fademrecht C, Günther G, Hengstler JG, Rauh D.
Abstract : Reversible epidermal growth factor receptor (EGFR) inhibitors prompt a beneficial clinical response in non-small cell lung cancer patients who harbor activating mutations in EGFR. However, resistance mutations, particularly the gatekeeper mutation T790M, limit this efficacy. Here, we describe a structure-guided development of a series of covalent and mutant-selective EGFR inhibitors that effectively target the T790M mutant. The pyrazolopyrimidine-based core differs structurally from that of aminopyrimidine-based third-generation EGFR inhibitors and therefore constitutes a new set of inhibitors that target this mechanism of drug resistance. These inhibitors exhibited strong inhibitory effects toward EGFR kinase activity and excellent inhibition of cell growth in the drug-resistant cell line H1975, without significantly affecting EGFR wild-type cell lines. Additionally, we present the in vitro ADME/DMPK parameters for a subset of the inhibitors as well as in vivo pharmacokinetics in mice for a candidate with promising activity profile.
|
Antiproliferative activity against human NCI-H1975 cells harboring EGFR-L858R/T790M double mutant incubated for 96 hrs measured on day 5 by CellTiterGlo assay
|
Homo sapiens
|
100.0
nM
|
|
Journal : J Med Chem
Title : Structure-Guided Development of Covalent and Mutant-Selective Pyrazolopyrimidines to Target T790M Drug Resistance in Epidermal Growth Factor Receptor.
Year : 2017
Volume : 60
Issue : 18
First Page : 7725
Last Page : 7744
Authors : Engel J, Smith S, Lategahn J, Tumbrink HL, Goebel L, Becker C, Hennes E, Keul M, Unger A, Müller H, Baumann M, Schultz-Fademrecht C, Günther G, Hengstler JG, Rauh D.
Abstract : Reversible epidermal growth factor receptor (EGFR) inhibitors prompt a beneficial clinical response in non-small cell lung cancer patients who harbor activating mutations in EGFR. However, resistance mutations, particularly the gatekeeper mutation T790M, limit this efficacy. Here, we describe a structure-guided development of a series of covalent and mutant-selective EGFR inhibitors that effectively target the T790M mutant. The pyrazolopyrimidine-based core differs structurally from that of aminopyrimidine-based third-generation EGFR inhibitors and therefore constitutes a new set of inhibitors that target this mechanism of drug resistance. These inhibitors exhibited strong inhibitory effects toward EGFR kinase activity and excellent inhibition of cell growth in the drug-resistant cell line H1975, without significantly affecting EGFR wild-type cell lines. Additionally, we present the in vitro ADME/DMPK parameters for a subset of the inhibitors as well as in vivo pharmacokinetics in mice for a candidate with promising activity profile.
|
Inhibition of recombinant human GST-tagged EGFR (668 to 1210 residues) expressed in baculovirus expression system using Poly(Glu,Tyr)4:1 as substrate after 1 hr by ELISA
|
Homo sapiens
|
272.0
nM
|
|
Journal : J Med Chem
Title : Design, Synthesis, and Biological Evaluation of Pyrimido[4,5- d]pyrimidine-2,4(1 H,3 H)-diones as Potent and Selective Epidermal Growth Factor Receptor (EGFR) Inhibitors against L858R/T790M Resistance Mutation.
Year : 2018
Volume : 61
Issue : 13
First Page : 5609
Last Page : 5622
Authors : Hao Y, Lyu J, Qu R, Tong Y, Sun D, Feng F, Tong L, Yang T, Zhao Z, Zhu L, Ding J, Xu Y, Xie H, Li H.
Abstract : First-generation epidermal growth factor receptor (EGFR) inhibitors, gefitinib and erlotinib, have achieved initially marked clinical efficacy for nonsmall cell lung cancer (NSCLC) patients with EGFR activating mutations. However, their clinical benefit was limited by the emergence of acquired resistance mutations. In most cases (approximately 60%), the resistance was caused by the secondary EGFR T790M gatekeeper mutation. Thus, it is still desirable to develop novel third-generation EGFR inhibitors to overcome T790M mutation while sparing wild-type (WT) EGFR. Herein, a series of pyrimido[4,5- d]pyrimidine-2,4(1 H,3 H)-dione derivatives were designed and synthesized, among which the most potent compound 20g not only demonstrated significant inhibitory activity and selectivity for EGFRL858R/T790M and H1975 cells in vitro but also displayed outstanding antitumor efficiency in H1975 xenograft mouse model. The encouraging mutant-selective results at both in vitro and in vivo levels suggested that 20g might be used as a promising lead compound for further structural optimization as potent and selective EGFRL858R/T790M inhibitors.
|
Inhibition of recombinant human GST-tagged EGFR L858R/T790M double mutant expressed in baculovirus expression system using Poly(Glu,Tyr)4:1 as substrate after 1 hr by ELISA
|
Homo sapiens
|
20.0
nM
|
|
Journal : J Med Chem
Title : Design, Synthesis, and Biological Evaluation of Pyrimido[4,5- d]pyrimidine-2,4(1 H,3 H)-diones as Potent and Selective Epidermal Growth Factor Receptor (EGFR) Inhibitors against L858R/T790M Resistance Mutation.
Year : 2018
Volume : 61
Issue : 13
First Page : 5609
Last Page : 5622
Authors : Hao Y, Lyu J, Qu R, Tong Y, Sun D, Feng F, Tong L, Yang T, Zhao Z, Zhu L, Ding J, Xu Y, Xie H, Li H.
Abstract : First-generation epidermal growth factor receptor (EGFR) inhibitors, gefitinib and erlotinib, have achieved initially marked clinical efficacy for nonsmall cell lung cancer (NSCLC) patients with EGFR activating mutations. However, their clinical benefit was limited by the emergence of acquired resistance mutations. In most cases (approximately 60%), the resistance was caused by the secondary EGFR T790M gatekeeper mutation. Thus, it is still desirable to develop novel third-generation EGFR inhibitors to overcome T790M mutation while sparing wild-type (WT) EGFR. Herein, a series of pyrimido[4,5- d]pyrimidine-2,4(1 H,3 H)-dione derivatives were designed and synthesized, among which the most potent compound 20g not only demonstrated significant inhibitory activity and selectivity for EGFRL858R/T790M and H1975 cells in vitro but also displayed outstanding antitumor efficiency in H1975 xenograft mouse model. The encouraging mutant-selective results at both in vitro and in vivo levels suggested that 20g might be used as a promising lead compound for further structural optimization as potent and selective EGFRL858R/T790M inhibitors.
|
Cytotoxicity against human A431 cells harboring wild type EGFR assessed as reduction in cell viability after 72 hrs by SRB assay
|
Homo sapiens
|
641.0
nM
|
|
Journal : J Med Chem
Title : Design, Synthesis, and Biological Evaluation of Pyrimido[4,5- d]pyrimidine-2,4(1 H,3 H)-diones as Potent and Selective Epidermal Growth Factor Receptor (EGFR) Inhibitors against L858R/T790M Resistance Mutation.
Year : 2018
Volume : 61
Issue : 13
First Page : 5609
Last Page : 5622
Authors : Hao Y, Lyu J, Qu R, Tong Y, Sun D, Feng F, Tong L, Yang T, Zhao Z, Zhu L, Ding J, Xu Y, Xie H, Li H.
Abstract : First-generation epidermal growth factor receptor (EGFR) inhibitors, gefitinib and erlotinib, have achieved initially marked clinical efficacy for nonsmall cell lung cancer (NSCLC) patients with EGFR activating mutations. However, their clinical benefit was limited by the emergence of acquired resistance mutations. In most cases (approximately 60%), the resistance was caused by the secondary EGFR T790M gatekeeper mutation. Thus, it is still desirable to develop novel third-generation EGFR inhibitors to overcome T790M mutation while sparing wild-type (WT) EGFR. Herein, a series of pyrimido[4,5- d]pyrimidine-2,4(1 H,3 H)-dione derivatives were designed and synthesized, among which the most potent compound 20g not only demonstrated significant inhibitory activity and selectivity for EGFRL858R/T790M and H1975 cells in vitro but also displayed outstanding antitumor efficiency in H1975 xenograft mouse model. The encouraging mutant-selective results at both in vitro and in vivo levels suggested that 20g might be used as a promising lead compound for further structural optimization as potent and selective EGFRL858R/T790M inhibitors.
|
Antiproliferative activity against human NCI-H1975 cells harboring EGFR L858R/T790M double mutant after 72 hrs by SRB assay
|
Homo sapiens
|
31.0
nM
|
|
Journal : J Med Chem
Title : Design, Synthesis, and Biological Evaluation of Pyrimido[4,5- d]pyrimidine-2,4(1 H,3 H)-diones as Potent and Selective Epidermal Growth Factor Receptor (EGFR) Inhibitors against L858R/T790M Resistance Mutation.
Year : 2018
Volume : 61
Issue : 13
First Page : 5609
Last Page : 5622
Authors : Hao Y, Lyu J, Qu R, Tong Y, Sun D, Feng F, Tong L, Yang T, Zhao Z, Zhu L, Ding J, Xu Y, Xie H, Li H.
Abstract : First-generation epidermal growth factor receptor (EGFR) inhibitors, gefitinib and erlotinib, have achieved initially marked clinical efficacy for nonsmall cell lung cancer (NSCLC) patients with EGFR activating mutations. However, their clinical benefit was limited by the emergence of acquired resistance mutations. In most cases (approximately 60%), the resistance was caused by the secondary EGFR T790M gatekeeper mutation. Thus, it is still desirable to develop novel third-generation EGFR inhibitors to overcome T790M mutation while sparing wild-type (WT) EGFR. Herein, a series of pyrimido[4,5- d]pyrimidine-2,4(1 H,3 H)-dione derivatives were designed and synthesized, among which the most potent compound 20g not only demonstrated significant inhibitory activity and selectivity for EGFRL858R/T790M and H1975 cells in vitro but also displayed outstanding antitumor efficiency in H1975 xenograft mouse model. The encouraging mutant-selective results at both in vitro and in vivo levels suggested that 20g might be used as a promising lead compound for further structural optimization as potent and selective EGFRL858R/T790M inhibitors.
|
Inhibition of EGFR T790M/L858R double mutant phosphorylation in human H1975 cells preincubated for 2 hrs followed by EGF stimulation for 10 mins by sandwich ELISA
|
Homo sapiens
|
16.0
nM
|
|
Journal : J Med Chem
Title : Discovery of N-((3R,4R)-4-Fluoro-1-(6-((3-methoxy-1-methyl-1H-pyrazol-4-yl)amino)-9-methyl-9H-purin-2-yl)pyrrolidine-3-yl)acrylamide (PF-06747775) through Structure-Based Drug Design: A High Affinity Irreversible Inhibitor Targeting Oncogenic EGFR Mutants with Selectivity over Wild-Type EGFR.
Year : 2017
Volume : 60
Issue : 7
First Page : 3002
Last Page : 3019
Authors : Planken S, Behenna DC, Nair SK, Johnson TO, Nagata A, Almaden C, Bailey S, Ballard TE, Bernier L, Cheng H, Cho-Schultz S, Dalvie D, Deal JG, Dinh DM, Edwards MP, Ferre RA, Gajiwala KS, Hemkens M, Kania RS, Kath JC, Matthews J, Murray BW, Niessen S, Orr ST, Pairish M, Sach NW, Shen H, Shi M, Solowiej J, Tran K, Tseng E, Vicini P, Wang Y, Weinrich SL, Zhou R, Zientek M, Liu L, Luo Y, Xin S, Zhang C, Lafontaine J.
Abstract : Mutant epidermal growth factor receptor (EGFR) is a major driver of non-small-cell lung cancer (NSCLC). Marketed first generation inhibitors, such as erlotinib, effect a transient beneficial response in EGFR mutant NSCLC patients before resistance mechanisms render these inhibitors ineffective. Secondary oncogenic EGFR mutations account for approximately 50% of relapses, the most common being the gatekeeper T790M substitution that renders existing therapies ineffective. The discovery of PF-06459988 (1), an irreversible pyrrolopyrimidine inhibitor of EGFR T790M mutants, was recently disclosed.1 Herein, we describe our continued efforts to achieve potency across EGFR oncogenic mutations and improved kinome selectivity, resulting in the discovery of clinical candidate PF-06747775 (21), which provides potent EGFR activity against the four common mutants (exon 19 deletion (Del), L858R, and double mutants T790M/L858R and T790M/Del), selectivity over wild-type EGFR, and desirable ADME properties. Compound 21 is currently being evaluated in phase-I clinical trials of mutant EGFR driven NSCLC.
|
Inhibition of EGFR T790M/exon 19 deletion mutant phosphorylation in human PC9-DRH cells preincubated for 2 hrs followed by EGF stimulation for 10 mins by sandwich ELISA
|
Homo sapiens
|
9.0
nM
|
|
Journal : J Med Chem
Title : Discovery of N-((3R,4R)-4-Fluoro-1-(6-((3-methoxy-1-methyl-1H-pyrazol-4-yl)amino)-9-methyl-9H-purin-2-yl)pyrrolidine-3-yl)acrylamide (PF-06747775) through Structure-Based Drug Design: A High Affinity Irreversible Inhibitor Targeting Oncogenic EGFR Mutants with Selectivity over Wild-Type EGFR.
Year : 2017
Volume : 60
Issue : 7
First Page : 3002
Last Page : 3019
Authors : Planken S, Behenna DC, Nair SK, Johnson TO, Nagata A, Almaden C, Bailey S, Ballard TE, Bernier L, Cheng H, Cho-Schultz S, Dalvie D, Deal JG, Dinh DM, Edwards MP, Ferre RA, Gajiwala KS, Hemkens M, Kania RS, Kath JC, Matthews J, Murray BW, Niessen S, Orr ST, Pairish M, Sach NW, Shen H, Shi M, Solowiej J, Tran K, Tseng E, Vicini P, Wang Y, Weinrich SL, Zhou R, Zientek M, Liu L, Luo Y, Xin S, Zhang C, Lafontaine J.
Abstract : Mutant epidermal growth factor receptor (EGFR) is a major driver of non-small-cell lung cancer (NSCLC). Marketed first generation inhibitors, such as erlotinib, effect a transient beneficial response in EGFR mutant NSCLC patients before resistance mechanisms render these inhibitors ineffective. Secondary oncogenic EGFR mutations account for approximately 50% of relapses, the most common being the gatekeeper T790M substitution that renders existing therapies ineffective. The discovery of PF-06459988 (1), an irreversible pyrrolopyrimidine inhibitor of EGFR T790M mutants, was recently disclosed.1 Herein, we describe our continued efforts to achieve potency across EGFR oncogenic mutations and improved kinome selectivity, resulting in the discovery of clinical candidate PF-06747775 (21), which provides potent EGFR activity against the four common mutants (exon 19 deletion (Del), L858R, and double mutants T790M/L858R and T790M/Del), selectivity over wild-type EGFR, and desirable ADME properties. Compound 21 is currently being evaluated in phase-I clinical trials of mutant EGFR driven NSCLC.
|
Inhibition of EGFR exon 19 deletion mutant phosphorylation in human PC9 cells preincubated for 2 hrs followed by EGF stimulation for 10 mins by sandwich ELISA
|
Homo sapiens
|
79.0
nM
|
|
Journal : J Med Chem
Title : Discovery of N-((3R,4R)-4-Fluoro-1-(6-((3-methoxy-1-methyl-1H-pyrazol-4-yl)amino)-9-methyl-9H-purin-2-yl)pyrrolidine-3-yl)acrylamide (PF-06747775) through Structure-Based Drug Design: A High Affinity Irreversible Inhibitor Targeting Oncogenic EGFR Mutants with Selectivity over Wild-Type EGFR.
Year : 2017
Volume : 60
Issue : 7
First Page : 3002
Last Page : 3019
Authors : Planken S, Behenna DC, Nair SK, Johnson TO, Nagata A, Almaden C, Bailey S, Ballard TE, Bernier L, Cheng H, Cho-Schultz S, Dalvie D, Deal JG, Dinh DM, Edwards MP, Ferre RA, Gajiwala KS, Hemkens M, Kania RS, Kath JC, Matthews J, Murray BW, Niessen S, Orr ST, Pairish M, Sach NW, Shen H, Shi M, Solowiej J, Tran K, Tseng E, Vicini P, Wang Y, Weinrich SL, Zhou R, Zientek M, Liu L, Luo Y, Xin S, Zhang C, Lafontaine J.
Abstract : Mutant epidermal growth factor receptor (EGFR) is a major driver of non-small-cell lung cancer (NSCLC). Marketed first generation inhibitors, such as erlotinib, effect a transient beneficial response in EGFR mutant NSCLC patients before resistance mechanisms render these inhibitors ineffective. Secondary oncogenic EGFR mutations account for approximately 50% of relapses, the most common being the gatekeeper T790M substitution that renders existing therapies ineffective. The discovery of PF-06459988 (1), an irreversible pyrrolopyrimidine inhibitor of EGFR T790M mutants, was recently disclosed.1 Herein, we describe our continued efforts to achieve potency across EGFR oncogenic mutations and improved kinome selectivity, resulting in the discovery of clinical candidate PF-06747775 (21), which provides potent EGFR activity against the four common mutants (exon 19 deletion (Del), L858R, and double mutants T790M/L858R and T790M/Del), selectivity over wild-type EGFR, and desirable ADME properties. Compound 21 is currently being evaluated in phase-I clinical trials of mutant EGFR driven NSCLC.
|
Inhibition of EGFR L858R mutant phosphorylation in human H3255 cells preincubated for 2 hrs followed by EGF stimulation for 10 mins by sandwich ELISA
|
Homo sapiens
|
46.0
nM
|
|
Journal : J Med Chem
Title : Discovery of N-((3R,4R)-4-Fluoro-1-(6-((3-methoxy-1-methyl-1H-pyrazol-4-yl)amino)-9-methyl-9H-purin-2-yl)pyrrolidine-3-yl)acrylamide (PF-06747775) through Structure-Based Drug Design: A High Affinity Irreversible Inhibitor Targeting Oncogenic EGFR Mutants with Selectivity over Wild-Type EGFR.
Year : 2017
Volume : 60
Issue : 7
First Page : 3002
Last Page : 3019
Authors : Planken S, Behenna DC, Nair SK, Johnson TO, Nagata A, Almaden C, Bailey S, Ballard TE, Bernier L, Cheng H, Cho-Schultz S, Dalvie D, Deal JG, Dinh DM, Edwards MP, Ferre RA, Gajiwala KS, Hemkens M, Kania RS, Kath JC, Matthews J, Murray BW, Niessen S, Orr ST, Pairish M, Sach NW, Shen H, Shi M, Solowiej J, Tran K, Tseng E, Vicini P, Wang Y, Weinrich SL, Zhou R, Zientek M, Liu L, Luo Y, Xin S, Zhang C, Lafontaine J.
Abstract : Mutant epidermal growth factor receptor (EGFR) is a major driver of non-small-cell lung cancer (NSCLC). Marketed first generation inhibitors, such as erlotinib, effect a transient beneficial response in EGFR mutant NSCLC patients before resistance mechanisms render these inhibitors ineffective. Secondary oncogenic EGFR mutations account for approximately 50% of relapses, the most common being the gatekeeper T790M substitution that renders existing therapies ineffective. The discovery of PF-06459988 (1), an irreversible pyrrolopyrimidine inhibitor of EGFR T790M mutants, was recently disclosed.1 Herein, we describe our continued efforts to achieve potency across EGFR oncogenic mutations and improved kinome selectivity, resulting in the discovery of clinical candidate PF-06747775 (21), which provides potent EGFR activity against the four common mutants (exon 19 deletion (Del), L858R, and double mutants T790M/L858R and T790M/Del), selectivity over wild-type EGFR, and desirable ADME properties. Compound 21 is currently being evaluated in phase-I clinical trials of mutant EGFR driven NSCLC.
|
Inhibition of N-terminal GST tagged human recombinant EGFR L858R/T790M mutant (695 to end amino acids) expressed in baculovirus infected Sf9 insect cells using Poly (4:1 Glu, Tyr) Peptide substrate by ADP-Glo assay
|
Homo sapiens
|
20.0
nM
|
|
Journal : Eur J Med Chem
Title : Synthesis and biological evaluation of morpholine-substituted diphenylpyrimidine derivatives (Mor-DPPYs) as potent EGFR T790M inhibitors with improved activity toward the gefitinib-resistant non-small cell lung cancers (NSCLC).
Year : 2017
Volume : 133
First Page : 329
Last Page : 339
Authors : Song Z, Huang S, Yu H, Jiang Y, Wang C, Meng Q, Shu X, Sun H, Liu K, Li Y, Ma X.
Abstract : Potential new EGFRT790M inhibitors comprised of structurally modified diphenylpyrimidine derivatives bearing a morpholine functionality (Mor-DPPYs) were used to improve the activity and selectivity of gefitinib-resistant non-small cell lung cancer (NSCLC) treatment. This led to the identification of inhibitor 10c, which displayed high activity against EGFRT790M/L858R kinase (IC50 = 0.71 nM) and repressed H1975 cell replication harboring EGFRT790M mutations at a concentration of 0.037 μM. Inhibitor 10c demonstrated high selectivity (SI = 631.9) for T790M-containing EGFR mutants over wild type EGFR, suggesting that it will cause less side effects. Moreover, this compound also shows promising antitumor efficacy in a murine EGFRT790M/L858R-driven H1975 xenograft model without affecting body weight. This study provides new potential lead compounds for further development of anti-NSCLC drugs.
|
Inhibition of wild type N-terminal GST tagged human recombinant EGFR (695 to end amino acids) expressed in baculovirus infected Sf9 insect cells using Poly (4:1 Glu, Tyr) Peptide substrate by ADP-Glo assay
|
Homo sapiens
|
500.0
nM
|
|
Journal : Eur J Med Chem
Title : Synthesis and biological evaluation of morpholine-substituted diphenylpyrimidine derivatives (Mor-DPPYs) as potent EGFR T790M inhibitors with improved activity toward the gefitinib-resistant non-small cell lung cancers (NSCLC).
Year : 2017
Volume : 133
First Page : 329
Last Page : 339
Authors : Song Z, Huang S, Yu H, Jiang Y, Wang C, Meng Q, Shu X, Sun H, Liu K, Li Y, Ma X.
Abstract : Potential new EGFRT790M inhibitors comprised of structurally modified diphenylpyrimidine derivatives bearing a morpholine functionality (Mor-DPPYs) were used to improve the activity and selectivity of gefitinib-resistant non-small cell lung cancer (NSCLC) treatment. This led to the identification of inhibitor 10c, which displayed high activity against EGFRT790M/L858R kinase (IC50 = 0.71 nM) and repressed H1975 cell replication harboring EGFRT790M mutations at a concentration of 0.037 μM. Inhibitor 10c demonstrated high selectivity (SI = 631.9) for T790M-containing EGFR mutants over wild type EGFR, suggesting that it will cause less side effects. Moreover, this compound also shows promising antitumor efficacy in a murine EGFRT790M/L858R-driven H1975 xenograft model without affecting body weight. This study provides new potential lead compounds for further development of anti-NSCLC drugs.
|
Antiproliferative activity against human NCI-H1975 cells incubated for 72 hrs by MTT assay
|
Homo sapiens
|
299.0
nM
|
|
Journal : Eur J Med Chem
Title : Synthesis and biological evaluation of morpholine-substituted diphenylpyrimidine derivatives (Mor-DPPYs) as potent EGFR T790M inhibitors with improved activity toward the gefitinib-resistant non-small cell lung cancers (NSCLC).
Year : 2017
Volume : 133
First Page : 329
Last Page : 339
Authors : Song Z, Huang S, Yu H, Jiang Y, Wang C, Meng Q, Shu X, Sun H, Liu K, Li Y, Ma X.
Abstract : Potential new EGFRT790M inhibitors comprised of structurally modified diphenylpyrimidine derivatives bearing a morpholine functionality (Mor-DPPYs) were used to improve the activity and selectivity of gefitinib-resistant non-small cell lung cancer (NSCLC) treatment. This led to the identification of inhibitor 10c, which displayed high activity against EGFRT790M/L858R kinase (IC50 = 0.71 nM) and repressed H1975 cell replication harboring EGFRT790M mutations at a concentration of 0.037 μM. Inhibitor 10c demonstrated high selectivity (SI = 631.9) for T790M-containing EGFR mutants over wild type EGFR, suggesting that it will cause less side effects. Moreover, this compound also shows promising antitumor efficacy in a murine EGFRT790M/L858R-driven H1975 xenograft model without affecting body weight. This study provides new potential lead compounds for further development of anti-NSCLC drugs.
|
Antiproliferative activity against human HCC827 cells incubated for 72 hrs by MTT assay
|
Homo sapiens
|
31.0
nM
|
|
Journal : Eur J Med Chem
Title : Synthesis and biological evaluation of morpholine-substituted diphenylpyrimidine derivatives (Mor-DPPYs) as potent EGFR T790M inhibitors with improved activity toward the gefitinib-resistant non-small cell lung cancers (NSCLC).
Year : 2017
Volume : 133
First Page : 329
Last Page : 339
Authors : Song Z, Huang S, Yu H, Jiang Y, Wang C, Meng Q, Shu X, Sun H, Liu K, Li Y, Ma X.
Abstract : Potential new EGFRT790M inhibitors comprised of structurally modified diphenylpyrimidine derivatives bearing a morpholine functionality (Mor-DPPYs) were used to improve the activity and selectivity of gefitinib-resistant non-small cell lung cancer (NSCLC) treatment. This led to the identification of inhibitor 10c, which displayed high activity against EGFRT790M/L858R kinase (IC50 = 0.71 nM) and repressed H1975 cell replication harboring EGFRT790M mutations at a concentration of 0.037 μM. Inhibitor 10c demonstrated high selectivity (SI = 631.9) for T790M-containing EGFR mutants over wild type EGFR, suggesting that it will cause less side effects. Moreover, this compound also shows promising antitumor efficacy in a murine EGFRT790M/L858R-driven H1975 xenograft model without affecting body weight. This study provides new potential lead compounds for further development of anti-NSCLC drugs.
|
Antiviral activity determined as inhibition of SARS-CoV-2 induced cytotoxicity of Caco-2 cells at 10 uM after 48 hours by high content imaging
|
Homo sapiens
|
84.88
%
|
|
Title : Identification of inhibitors of SARS-CoV-2 in-vitro cellular toxicity in human (Caco-2) cells using a large scale drug repurposing collection
Year : 2020
Authors : Bernhard Ellinger, Denisa Bojkova, Andrea Zaliani, Jindrich Cinatl, Carsten Claussen, Sandra Westhaus, Jeanette Reinshagen, Maria Kuzikov, Markus Wolf, Gerd Geisslinger, Philip Gribbon, Sandra Ciesek
Abstract : To identify possible candidates for progression towards clinical studies against SARS-CoV-2, we screened a well-defined collection of 5632 compounds including 3488 compounds which have undergone clinical investigations (marketed drugs, phases 1 -3, and withdrawn) across 600 indications. Compounds were screened for their inhibition of viral induced cytotoxicity using the human epithelial colorectal adenocarcinoma cell line Caco-2 and a SARS-CoV-2 isolate. The primary screen of 5632 compounds gave 271 hits. A total of 64 compounds with IC50 <20 µM were identified, including 19 compounds with IC50 < 1 µM. Of this confirmed hit population, 90% have not yet been previously reported as active against SARS-CoV-2 in-vitro cell assays. Some 37 of the actives are launched drugs, 19 are in phases 1-3 and 10 pre-clinical. Several inhibitors were associated with modulation of host pathways including kinase signaling P53 activation, ubiquitin pathways and PDE activity modulation, with long chain acyl transferases were effective viral inhibitors.
|
SARS-CoV-2 3CL-Pro protease inhibition percentage at 20µM by FRET kind of response from peptide substrate
|
Severe acute respiratory syndrome coronavirus 2
|
13.76
%
|
|
Title : Identification of inhibitors of SARS-Cov2 M-Pro enzymatic activity using a small molecule repurposing screen
Year : 2020
Authors : Maria Kuzikov, Elisa Costanzi, Jeanette Reinshagen, Francesca Esposito, Laura Vangeel, Markus Wolf, Bernhard Ellinger, Carsten Claussen, Gerd Geisslinger, Angela Corona, Daniela Iaconis, Carmine Talarico, Candida Manelfi, Rolando Cannalire, Giulia Rossetti, Jonas Gossen, Simone Albani, Francesco Musiani, Katja Herzog, Yang Ye, Barbara Giabbai, Nicola Demitri, Dirk Jochmans, Steven De Jonghe, Jasper Rymenants, Vincenzo Summa, Enzo Tramontano, Andrea R. Beccari, Pieter Leyssen, Paola Storici, Johan Neyts, Philip Gribbon, and Andrea Zaliani
Abstract : Compound repurposing is an important strategy being pursued in the identification of effective treatment against the SARS-CoV-2 infection and COVID-19 disease. In this regard, SARS-CoV-2 main protease (M-Pro), also termed 3CL-Pro, is an attractive drug target as it plays a central role in viral replication by processing the viral polyprotein into 11 non-structural proteins. We report the results of a screening campaign involving ca 8.7 K compounds containing marketed drugs, clinical and preclinical candidates, and chemicals regarded as safe in humans. We confirmed previously reported inhibitors of 3CL-Pro, but we have also identified 68 compounds with IC50 lower than 1 uM and 127 compounds with IC50 lower than 5 uM. Profiling showed 67% of confirmed hits were selective (> 5 fold) against other Cys- and Ser- proteases (Chymotrypsin and Cathepsin-L) and MERS 3CL-Pro. Selected compounds were also analysed in their binding characteristics.
|
Antiviral activity determined as inhibition of SARS-CoV-2 induced cytotoxicity of VERO-6 cells at 10 uM after 48 hours exposure to 0.01 MOI SARS CoV-2 virus by high content imaging
|
Chlorocebus sabaeus
|
0.73
%
|
|
Antiviral activity determined as inhibition of SARS-CoV-2 induced cytotoxicity of VERO-6 cells at 10 uM after 48 hours exposure to 0.01 MOI SARS CoV-2 virus by high content imaging
|
Chlorocebus sabaeus
|
0.73
%
|
|
Title : Cytopathic SARS-Cov2 screening on VERO-E6 cells in a large repurposing effort
Year : 2020
Authors : Andrea Zaliani, Laura Vangeel, Jeanette Reinshagen, Daniela Iaconis, Maria Kuzikov, Oliver Keminer, Markus Wolf, Bernhard Ellinger, Francesca Esposito, Angela Corona, Enzo Tramontano, Candida Manelfi, Katja Herzog, Dirk Jochmans, Steven De Jonghe, Winston Chiu, Thibault Francken, Joost Schepers, Caroline Collard, Kayvan Abbasi, Carsten Claussen , Vincenzo Summa, Andrea R. Beccari, Johan Neyts, Philip Gribbon and Pieter Leyssen
Abstract : Worldwide, there are intensive efforts to identify repurposed drugs as potential therapies against SARS-CoV-2 infection and the associated COVID-19 disease. To date, the anti-inflammatory drug dexamethasone and (to a lesser extent) the RNA-polymerase inhibitor remdesivir have been shown to be effective in reducing mortality and patient time to recovery, respectively, in patients. Here, we report the results of a phenotypic screening campaign within an EU-funded project (H2020-EXSCALATE4COV) aimed at extending the repertoire of anti-COVID therapeutics through repurposing of available compounds and highlighting compounds with new mechanisms of action against viral infection. We screened 8702 molecules from different repurposing libraries, to reveal 110 compounds with an anti-cytopathic IC50 < 20 µM. From this group, 18 with a safety index greater than 2 are also marketed drugs, making them suitable for further study as potential therapies against COVID-19. Our result supports the idea that a systematic approach to repurposing is a valid strategy to accelerate the necessary drug discovery process.
|
Antiproliferative activity against human PC-9 cells
|
Homo sapiens
|
84.0
nM
|
|
Journal : Eur J Med Chem
Title : Design, synthesis and biological evaluation of novel 2,4-diaryl pyrimidine derivatives as selective EGFR inhibitors.
Year : 2021
Volume : 212
First Page : 113019
Last Page : 113019
Authors : Li J,An B,Song X,Zhang Q,Chen C,Wei S,Fan R,Li X,Zou Y
Abstract : Lung cancer is the leading cause of cancer deaths. It has been demonstrated that epidermal growth factor receptor tyrosine kinase inhibitors (EGFR-TKI) are efficacious in patients with EGFR mutation-positive non-small cell lung cancer (NSCLC). In this work, a new series of 2,4-diaryl pyrimidine derivatives containing cyclopropyl moiety were designed, synthesized and evaluated as novel selective EGFR inhibitors. The most promising compound, 8l demonstrated excellent kinase inhibitory activity against EGFR double mutation with IC value of 0.26 nM. Moreover, 8l provided strong activity against H1975 cells with IC value of 0.008 μM and exhibited little toxicity toward four non-tumorigenic cell lines. Furthermore, 8l showed potent anti-tumor efficacy in a murine EGFR-driven H1975 xenograft model. These results indicated that 8l may be a promising drug candidate for further study.
|
Antiproliferative activity against human NCI-H1975 cells
|
Homo sapiens
|
23.0
nM
|
|
Journal : Eur J Med Chem
Title : Design, synthesis and biological evaluation of novel 2,4-diaryl pyrimidine derivatives as selective EGFR inhibitors.
Year : 2021
Volume : 212
First Page : 113019
Last Page : 113019
Authors : Li J,An B,Song X,Zhang Q,Chen C,Wei S,Fan R,Li X,Zou Y
Abstract : Lung cancer is the leading cause of cancer deaths. It has been demonstrated that epidermal growth factor receptor tyrosine kinase inhibitors (EGFR-TKI) are efficacious in patients with EGFR mutation-positive non-small cell lung cancer (NSCLC). In this work, a new series of 2,4-diaryl pyrimidine derivatives containing cyclopropyl moiety were designed, synthesized and evaluated as novel selective EGFR inhibitors. The most promising compound, 8l demonstrated excellent kinase inhibitory activity against EGFR double mutation with IC value of 0.26 nM. Moreover, 8l provided strong activity against H1975 cells with IC value of 0.008 μM and exhibited little toxicity toward four non-tumorigenic cell lines. Furthermore, 8l showed potent anti-tumor efficacy in a murine EGFR-driven H1975 xenograft model. These results indicated that 8l may be a promising drug candidate for further study.
|
Antiproliferation activity against human NCI-H1975 cells expressing EGFR L858R/T790M mutant assessed as reduction in cell viability incubated incubated for 48 hrs by MTT assay
|
Homo sapiens
|
510.0
nM
|
|
Journal : Bioorg Med Chem
Title : Design, synthesis and SAR study of 2-aminopyrimidines with diverse Michael addition acceptors for chemically tuning the potency against EGFR.
Year : 2020
Volume : 28
Issue : 19
First Page : 115680
Last Page : 115680
Authors : Shao J,Liu S,Liu X,Pan Y,Chen W
Abstract : The covalent binding nature of irreversible kinase inhibitors potentially increases the severity of "off-target" toxicity. Based on our continual strategy of chemically tuning the Michael addition acceptors, herein, we further explore the relationship among the electronic nature of Michael addition acceptors and EGFR mutation selectivity as well as "off-target" toxicity balance. By perturbing the electronic nature of acrylamide moiety, compound 8a with a chloro-group at the α-position of the Michael addition acceptor was identified. It was found that 8a retained the excellent EGFR potency (IC = 3.9 nM) and exhibited good anti-proliferative activities against the gefitinib-resistant NCI-H1975 cells (IC = 0.75 μM). Moreover, 8a displayed a significant EGFR selectivity and much weaker inhibitory activity against non-EGFR dependent SW620 cell and COS7. Preliminary study showed that 8a could arrest NCI-H1975 cells in G0/G1 phase. This work provides a promising chemical tuned strategy for balancing the mutant-EGFR potency and selectivity as well as "off-target" toxicity.
|
Inhibition of wild type EGFR (unknown origin) in presence of ATP preincubated 5 mins measured for 30 mins by detection reagent based HTRF analysis
|
Homo sapiens
|
76.0
nM
|
|
Journal : Bioorg Med Chem
Title : Design, synthesis and SAR study of 2-aminopyrimidines with diverse Michael addition acceptors for chemically tuning the potency against EGFR.
Year : 2020
Volume : 28
Issue : 19
First Page : 115680
Last Page : 115680
Authors : Shao J,Liu S,Liu X,Pan Y,Chen W
Abstract : The covalent binding nature of irreversible kinase inhibitors potentially increases the severity of "off-target" toxicity. Based on our continual strategy of chemically tuning the Michael addition acceptors, herein, we further explore the relationship among the electronic nature of Michael addition acceptors and EGFR mutation selectivity as well as "off-target" toxicity balance. By perturbing the electronic nature of acrylamide moiety, compound 8a with a chloro-group at the α-position of the Michael addition acceptor was identified. It was found that 8a retained the excellent EGFR potency (IC = 3.9 nM) and exhibited good anti-proliferative activities against the gefitinib-resistant NCI-H1975 cells (IC = 0.75 μM). Moreover, 8a displayed a significant EGFR selectivity and much weaker inhibitory activity against non-EGFR dependent SW620 cell and COS7. Preliminary study showed that 8a could arrest NCI-H1975 cells in G0/G1 phase. This work provides a promising chemical tuned strategy for balancing the mutant-EGFR potency and selectivity as well as "off-target" toxicity.
|
Inhibition of recombinant human EGFR T790M/L858R mutant expressed in baculovirus insect cell expression system in presence of ATP preincubated 5 mins measured for 30 mins by detection reagent based HTRF analysis
|
Homo sapiens
|
1.8
nM
|
|
Journal : Bioorg Med Chem
Title : Design, synthesis and SAR study of 2-aminopyrimidines with diverse Michael addition acceptors for chemically tuning the potency against EGFR.
Year : 2020
Volume : 28
Issue : 19
First Page : 115680
Last Page : 115680
Authors : Shao J,Liu S,Liu X,Pan Y,Chen W
Abstract : The covalent binding nature of irreversible kinase inhibitors potentially increases the severity of "off-target" toxicity. Based on our continual strategy of chemically tuning the Michael addition acceptors, herein, we further explore the relationship among the electronic nature of Michael addition acceptors and EGFR mutation selectivity as well as "off-target" toxicity balance. By perturbing the electronic nature of acrylamide moiety, compound 8a with a chloro-group at the α-position of the Michael addition acceptor was identified. It was found that 8a retained the excellent EGFR potency (IC = 3.9 nM) and exhibited good anti-proliferative activities against the gefitinib-resistant NCI-H1975 cells (IC = 0.75 μM). Moreover, 8a displayed a significant EGFR selectivity and much weaker inhibitory activity against non-EGFR dependent SW620 cell and COS7. Preliminary study showed that 8a could arrest NCI-H1975 cells in G0/G1 phase. This work provides a promising chemical tuned strategy for balancing the mutant-EGFR potency and selectivity as well as "off-target" toxicity.
