Home Cell Cycle CDK inhibitor - GSK-3 inhibitor - Apoptosis related activator AT7519 For research use only.

AT7519

Synonyms: AT7519M

AT7519 is a multi-CDK inhibitor for CDK1, 2, 4, 6 and 9 with IC50 of 10-210 nM. It is less potent to CDK3 and little active to CDK7. AT7519 also decrease GSK3β phosphorylation. AT7519 induces apoptosis. Phase 2.

AT7519 Chemical Structure

AT7519 Chemical Structure

CAS No. 844442-38-2

Purity & Quality Control

AT7519 Related Products

Signaling Pathway

CDK Signaling Pathways

CDK Signaling Pathway

Cell Data

Cell Lines Assay Type Concentration Incubation Time Formulation Activity Description PMID
HCT116 Antiproliferative assay 72 hrs Antiproliferative activity against human HCT116 cells assessed as cell viability after 72 hrs by alamar blue assay, IC50=0.082μM 18656911
A2780 Antiproliferative assay 72 hrs Antiproliferative activity against human A2780 cells assessed as cell viability after 72 hrs by alamar blue assay, IC50=0.35μM 18656911
MRC5 Antiproliferative assay 72 hrs Antiproliferative activity against human MRC5 cells assessed as cell viability after 72 hrs by alamar blue assay, IC50=0.98μM 18656911
HCT116 Function assay Inhibition of CDK1 in human HCT116 cells assessed as PP1-alpha(Thr320) phosphorylation 18656911
HCT116 Function assay Inhibition of CDK2 in human HCT116 cells assessed as Rb(Thr321) phosphorylation 18656911
HCT116 Function assay Inhibition of CDK2 in human HCT116 cells assessed as NPM(Thr199) phosphorylation 18656911
HCT116 Cytotoxicity assay 72 hrs Cytotoxicity against human HCT116 cells assessed as growth inhibition after 72 hrs by Alamar blue assay, IC50=0.08μM 26115571
Sf21 Function assay Inhibition of recombinant human full length N-terminal His6-tagged CDK5/N-terminal GST-tagged p25 expressed in baculovirus infected Sf21 insect cells using histone H1 as substrate, Ki=0.018μM 27171036
Sf21 Function assay Inhibition of human full length C-terminal His6-tagged CDK2/N-terminal GST-tagged cyclin A expressed in baculovirus infected Sf21 insect cells using histone H1 as substrate, Ki=0.044μM 27171036
sf cells Function assay Inhibition of recombinant human N-terminal GST-tagged CDK4/cyclin D1 expressed in baculovirus infected sf cells, Ki=0.067μM 27171036
Sf21 Function assay Inhibition of recombinant human full length C-terminal His6-tagged CDK9/cyclin T1 expressed in baculovirus infected Sf21 insect cells using PDKtide as substrate, Ki<0.1μM 27171036
Sf21 Function assay Inhibition of human full length C-terminal His6-tagged CDK1/N-terminal GST-tagged cyclin B expressed in baculovirus infected Sf21 insect cells using histone H1 as substrate, Ki=0.19μM 27171036
Sf21 Function assay Inhibition of recombinant human full length C-terminal His6-tagged CDK2/N-terminal GST-tagged cyclin E expressed in baculovirus infected Sf21 insect cells using histone H1 as substrate, Ki=0.51μM 27171036
Sf21 Function assay Inhibition of recombinant human full length C-terminal His6-tagged CDK7/cyclin H/N-terminal GST-tagged MAT1 expressed in baculovirus infected Sf21 insect cells using cdk7 substrate peptide, Ki=2.8μM 27171036
TC32 qHTS assay qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for TC32 cells 29435139
DAOY qHTS assay qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for DAOY cells 29435139
SJ-GBM2 qHTS assay qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for SJ-GBM2 cells 29435139
A673 qHTS assay qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for A673 cells 29435139
SK-N-MC qHTS assay qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for SK-N-MC cells 29435139
BT-37 qHTS assay qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for BT-37 cells 29435139
NB-EBc1 qHTS assay qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for NB-EBc1 cells 29435139
Saos-2 qHTS assay qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for Saos-2 cells 29435139
SK-N-SH qHTS assay qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for SK-N-SH cells 29435139
BT-12 qHTS assay qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for BT-12 cells 29435139
OHS-50 qHTS assay qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for OHS-50 cells 29435139
RD qHTS assay qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for RD cells 29435139
MG 63 (6-TG R) qHTS assay qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for MG 63 (6-TG R) cells 29435139
Rh41 qHTS assay qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for Rh41 cells 29435139
A673 qHTS assay qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Confirmatory screen for A673 cells) 29435139
SK-N-MC qHTS assay qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Confirmatory screen for SK-N-MC cells 29435139
BT-12 qHTS assay qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Confirmatory screen for BT-12 cells 29435139
DAOY qHTS assay qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Confirmatory screen for DAOY cells 29435139
SJ-GBM2 qHTS assay qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Confirmatory screen for SJ-GBM2 cells 29435139
BT-37 qHTS assay qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Confirmatory screen for BT-37 cells 29435139
TC32 qHTS assay qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Confirmatory screen for TC32 cells 29435139
U-2 OS qHTS assay qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Confirmatory screen for U-2 OS cells 29435139
Rh41 qHTS assay qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Confirmatory screen for Rh41 cells 29435139
RD qHTS assay qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Confirmatory screen for RD cells 29435139
Rh30 qHTS assay qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Confirmatory screen for Rh30 cells 29435139
Saos-2 qHTS assay qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Confirmatory screen for Saos-2 cells 29435139
OHS-50 qHTS assay qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Confirmatory screen for OHS-50 cells 29435139
SK-N-SH qHTS assay qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Confirmatory screen for SK-N-SH cells 29435139
HEI-OC1 Function assay Protection against cisplatin-induced cell death in neonatal mouse HEI-OC1 cells assessed as reduction in caspase-3/7 activity, EC50=0.38μM 30091915
MIAPaCa2 Antiproliferative assay 72 hrs Antiproliferative activity against human MIAPaCa2 cells after 72 hrs by prestoblue assay, IC50=0.411μM 30343954
AsPC1 Antiproliferative assay 72 hrs Antiproliferative activity against human AsPC1 cells after 72 hrs by prestoblue assay, IC50=0.533μM 30343954
SUIT2 Antiproliferative assay 72 hrs Antiproliferative activity against human SUIT2 cells after 72 hrs by prestoblue assay, IC50=0.557μM 30343954
BxPC3 Antiproliferative assay 72 hrs Antiproliferative activity against human BxPC3 cells after 72 hrs by prestoblue assay, IC50=0.64μM 30343954
S2-013 Antiproliferative assay 72 hrs Antiproliferative activity against human S2-013 cells after 72 hrs by prestoblue assay, IC50=2.77μM 30343954
Sf21 Function assay Inhibition of recombinant human full-length C-terminal His6-tagged CDK9/human full-length untagged cyclin T1 expressed in baculovirus infected Sf21 insect cells using PDKtide as substrate, IC50<0.01μM 30543440
Sf21 Function assay 2 hrs Inhibition of recombinant full-length human C-terminal His6-tagged CDK1/human full-length N-terminal GST-tagged Cyclin B expressed in baculovirus infected Sf21 insect cells using histone H1 as substrate measured after 2 hrs in presence of gamma[32P] ATP b, IC50=0.21μM 30543440
Sf21 Function assay Inhibition of recombinant human full-length C-terminal His6-tagged CDK3/full-length human N-terminal GST-tagged Cyclin E expressed in baculovirus infected Sf21 insect cells using histone H1 as substrate, IC50=0.36μM 30543440
Sf21 Function assay Inhibition of recombinant human C-terminal His6-tagged full length CDK7/untagged recombinant full length human Cyclin H/N-terminal GST-tagged recombinant full length human MAT1 expressed in baculovirus infected Sf21 insect cells using cdk7 peptide as subs, IC50=2.4μM 30543440
HCT116 Antiproliferative assay 72 hrs Antiproliferative activity against human HCT116 cells assessed as reduction in cell viability after 72 hrs by cell titer glo-based luminescence assay, IC50=0.132μM 31175010
Click to View More Cell Line Experimental Data

Biological Activity

Description AT7519 is a multi-CDK inhibitor for CDK1, 2, 4, 6 and 9 with IC50 of 10-210 nM. It is less potent to CDK3 and little active to CDK7. AT7519 also decrease GSK3β phosphorylation. AT7519 induces apoptosis. Phase 2.
Targets
CDK9/CyclinT [1]
(Cell-free assay)		 CDK5/p35 [1]
(Cell-free assay)		 CDK2/CyclinA [1]
(Cell-free assay)		 GSK-3β [1]
(Cell-free assay)		 CDK4/CyclinD1 [1]
(Cell-free assay)		 Click to View More Targets
<10 nM 13 nM 47 nM 89 nM 100 nM
In vitro
In vitro AT7519 is an ATP competitive CDK inhibitor with a Ki value of 38 nM for CDK1. AT7519 is inactive against all non-CDK kinases with the exception of GSK3β (IC50 = 89 nM). AT7519 shows potent antiproliferative activity in a variety of human tumor cell lines with IC50 values ranging from 40 nM for MCF-7 to 940 nM for SW620 consistent with the inhibition of CDK1 and CDK2. [1] AT7519 induces dose-dependent cytotoxicity in multiple myeloma (MM) cell lines with IC50 values ranging from 0.5 to 2 μM at 48 hours, with the most sensitive cell lines being MM.1S (0.5 μM) and U266 (0.5 μM) and the most resistant MM.1R (>2 μM). It does not induce cytotoxicity in peripheral blood mononuclear cells (PBMNC). AT7519 partially overcomes the proliferative advantage conferred by IL6 and IGF-1 as well as the protective effect of bone marrow stromal cells (BMSCs). AT7519 induces rapid dephosphorylation of RNA pol II CTD at serine 2 and serine 5 sites, and leads to the inhibition of transcription, partially contributing to AT7519 induced cytotoxicity of MM cells. AT7519 induces activation of GSK-3β by down-regulating GSK-3β phosphorylation, which also contributes to AT7519 induced apoptosis independent of the inhibition of transcription. [2]
Kinase Assay In vitro Kinase Assays
Kinase assays for CDK1, CDK2 and GSK3-β are all carried out in a radiometric filter binding format. Assays for CDK5 are in DELFIA format and for CDKs 4 and 6 in ELISA format. For CDKs 1 and 2, the relevant CDK and 0.12 μg/mL Histone H1 are incubated in 20 mM MOPS, pH 7.2, 25 mM β-glycerophosphate, 5 mM EDTA, 15 mM MgCl2, 1 mM sodium orthovanadate, 1 mM DTT, 0.1 mg/mL BSA, 45 μM ATP (0.78 Ci/mmol) and different concentrations of AT7519 for 2 or 4 hours respectively. For GSK3-β, the relevant enzyme and 5 μM glycogen synthase peptide 2 along with 10 mM MOPS pH 7.0, 0.1 mg/mL BSA, 0.001% Brij-35, 0.5% glycerol, 0.2 mM EDTA, 10 mM MgCl2, 0.01% β-mercaptoethanol, 15 μM ATP (2.31 Ci/mmol) and different concentrations of AT7519 are incubated for 3 hours. Assay reactions are stopped by adding an excess of orthophosphoric acid and filtered using Millipore MAPH filter plates. The plates are then washed, scintillant added and radioactivity measured by scintillation counting on a Packard TopCount. For CDK5, CDK5/p35 and 1μM of a biotinylated Histone H1 peptide (Biotin-PKTPKKAKKL) are incubated in 25 mM Tris-HCl, pH 7.5, 2.5 mM MgCl2, 0.025% Brij-35, 0.1 mg/mL BSA, 1 mM DTT, 15 μM ATP and different concentrations of AT7519 for 30 minutes. Assay reactions are stopped using EDTA, transferred to Neutravidin-coated plates and phosphorylated peptide quantified by means of a rabbit phospho-cdk1 substrate polyclonal antibody and DELFIA europium-labelled anti-rabbit IgG secondary antibody using time-resolved fluorescence at λex=335nm, λem=620nm. For CDK 4 and 6 assays, plates are coated with GST- pRb769-921 and blocked with Superblock. CDK4 or 6 is incubated with 15 mM MgCl2, 50 mM HEPES, pH 7.4, 1 mM DTT, 1 mM EGTA, pH 8.0, 0.02% Triton X-100, 2.5% DMSO and different concentrations of AT7519; the reaction is initiated by addition of ATP. After 30 minutes, reactions are stopped by the addition of 0.5 M EDTA pH 8.0. Plates are then washed and incubated for one hour with the primary antibody (anti- p-Rb Serine 780) diluted in Superblock followed by secondary antibody (alkaline phosphatase linked anti-rabbit) for a further hour. Plates are developed using the Attophos system and fluorescence read on a Spectramax Gemini plate reader at excitation 450 nm and emission 580 nm. In all cases, IC50 values are calculated from replicate curves, using GraphPad Prism software.
Cell Research Cell lines MM.1S, MM.1R, RPMI8226, U266, RPMI8266, RPMI-Dox40, OPM1 cells, primary MM cells and PBMNCs
Concentrations Dissolved in DMSO at a concentration of 10 mM, final concentrations 0.25-4 μM
Incubation Time 24 or 48 hours
Method Cells are incubated with different concentrations of AT7519 for 24 or 48 hours at 37 °C. Cell viability is assessed by measuring 3-(4,5-dimethylthiazol-2-yl)-2,5 diphenyl tetrasodium bromide (MTT) dye absorbance. DNA synthesis is measured by tritiated thymidine uptake (3H-TdR). Apoptosis is assessed by using Annexin V/PI staining. The percentage of cells undergoing apoptosis is defined as the sum of early apoptosis (Annexin V-positive cells) and late apoptosis (Annexin V-positive and PI-positive cells
Experimental Result Images Methods Biomarkers Images PMID
Growth inhibition assay Cell viability 20101221
Western blot CDK1 / CDK2 / CDK4 / Cyclin B1 / Cyclin E / CDK9 / CDK5 / CDK6 / Cyclin D1 / Cyclin A 20101221
In Vivo
In vivo A twice daily dosing of AT7519 (9.1 mg/kg) causes tumor regression of both early-stage and advanced-stage s.c. tumors in the HCT116 and HT29 colon cancer xenograft models. [1] AT7519 treatment (15 mg/kg) inhibits tumor growth and prolongs the median overall survival of mice in the human MM xenograft mouse model in association with increased caspase 3 activation. [2]
Animal Research Animal Models Male SCID mice inoculated subcutaneously with MM.1S cells
Dosages 15 mg/kg/day
Administration Dosed i.p.
NCT Number Recruitment Conditions Sponsor/Collaborators Start Date Phases
NCT01183949 Completed
Multiple Myeloma
Astex Pharmaceuticals Inc.|Multiple Myeloma Research Consortium
 November 2010 Phase 1|Phase 2

Chemical Information & Solubility

Molecular Weight 382.24 Formula

C16H17Cl2N5O2
CAS No. 844442-38-2 SDF Download AT7519 SDF
Smiles C1CNCCC1NC(=O)C2=C(C=NN2)NC(=O)C3=C(C=CC=C3Cl)Cl
Storage (From the date of receipt)

In vitro
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DMSO : 10 mg/mL ( (26.16 mM) Moisture-absorbing DMSO reduces solubility. Please use fresh DMSO.)

Water : Insoluble

Ethanol : Insoluble


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