Home Protein Tyrosine Kinase IGF-1R inhibitor GSK1904529A For research use only.

GSK1904529A

Synonyms: GSK 4529

GSK1904529A (GSK 4529) is a selective inhibitor of IGF-1R and IR with IC50 of 27 nM and 25 nM in cell-free assays, >100-fold more selective for IGF-1R/InsR than Akt1/2, Aurora A/B,B-Raf, CDK2, EGFR etc.

GSK1904529A Chemical Structure

GSK1904529A Chemical Structure

CAS No. 1089283-49-7

Purity & Quality Control

GSK1904529A Related Products

Signaling Pathway

IGF-1R Signaling Pathways

IGF-1R Signaling Pathway

Cell Data

Cell Lines Assay Type Concentration Incubation Time Formulation Activity Description PMID
NIH3T3 cells Function assay Inhibition of human insulin receptor autophosphorylation in transfected mouse NIH3T3 cells, IC50=19 nM 19101143
human TC71 cells Proliferation assay 72 h Antiproliferative activity against human TC71 cells after 72 hrs by Celltiter assay, IC50=35 nM 19101143
human SK-ES cells Proliferation assay 72 h Antiproliferative activity against human SK-ES cells after 72 hrs by Celltiter assay, IC50=61 nM 19101143
human NCI-H929 cells Proliferation assay 72 h Antiproliferative activity against human NCI-H929 cells after 72 hrs by Celltiter assay, IC50=81 nM 19101143
human LP-1 cells Proliferation assay 72 h Antiproliferative activity against human LP-1 cells after 72 hrs by Celltiter assay, IC50=104 nM 19101143
human COLO205 cells Proliferation assay 72 h Antiproliferative activity against human COLO205 cells after 72 hrs by Celltiter assay, IC50=124 nM 19101143
Click to View More Cell Line Experimental Data

Biological Activity

Description GSK1904529A (GSK 4529) is a selective inhibitor of IGF-1R and IR with IC50 of 27 nM and 25 nM in cell-free assays, >100-fold more selective for IGF-1R/InsR than Akt1/2, Aurora A/B,B-Raf, CDK2, EGFR etc.
Targets
Insulin Receptor [1]
(Cell-free assay)		 IGF-1R [1]
(Cell-free assay)
25 nM 27 nM
In vitro
In vitro GSK1904529A is a reversible, ATP-competitive inhibitor and has enzyme-inhibitor binding values against IGF-1R and IR with Ki of 1.6 nM and 1.3 nM, respectively. GSK1904529A potently inhibits the ligand-induced phosphorylation of IGF-1R and IR at concentrations above 0.01 μM, followed by blocking downstream signaling (AKT, IRS-1, and ERK). GSK1904529A potently inhibits NIH-3T3/LISN, TC-71, SK-N-MC, SK-ES RD-ES cells with IC50 of 60 nM, 35 nM, 43 nM, 61 nM and 62 nM, respectively. GSK1904529A also inhibits other multiple myeloma and Ewing's sarcoma cell lines including NCI-H929, MOLP-8, LP-1 and KMS-12-BM etc. GSK1904529A induces cell cycle arrest at the G1 phase in cell lines COLO 205, MCF-7, and NCI-H929, which are sensitive to GK1904529A. [1]
Kinase Assay Kinase assays
GSK1904529A is dissolved in DMSO as stock solution at 10 mM. Baculovirus-expressed glutathione S-transferase-tagged proteins encoding the intracellular domain of IGF-1R (amino acids 957-1367) and IR (amino acids 979-1382) are used for determination of IC50. Kinases are activated by preincubating the enzyme (2.7 μM final concentration) in 50 mM HEPES (pH 7.5), 10 mM MgCl2, 0.1mg/mL bovine serum albumin, and 2 mM ATP. GSK1904529A is diluted in DMSO and dispensed into the assay plates (100 nL/well). Kinase reactions contained (in 10 μL) 50 mM HEPES (pH 7.5), 3 mM DTT, 0.1mg/mL bovine serum albumin, 1mM CHAPS, 10 mM MgCl2, 10 μM ATP, 500 nM substrate peptide (biotin-aminohexylAEEEEYMMMMAKKKK-NH2; QPC), and 0.5 nM activated enzyme. Reactions are stopped after 1 hour at room temperature with 33 μM EDTA. Peptide phosphorylation is measured by time-resolved fluorescence resonance energy transfer with 7 nM streptavidin Surelight allophycocyanin and 1nM europium-conjugated phosphotyrosine antibodies. Plates are read in a multilabel reader.
Cell Research Cell lines Tumor cell lines including multiple myeloma, ewing's sarcoma, askin's tumor, colon, breast, anaplastic large cell lymphoma, lung, cervix, head and neck, prostate and ovary.
Concentrations ~ 100 μM, stocked in DMSO at 10 mM.
Incubation Time 72 hours
Method

Cells are seeded in 96-well plates and incubated overnight at 37 °C, and treated with various concentrations of GSK1904529A for 72 hours. For the NIH-3T3/LISN, cells are seeded on collagen-coated 96-well tissue culture plates and allowed to adhere for 24 hours. The tissue culture medium is replaced with serum-free medium and the cells are treated with DMSO or GSK1904529A for 2 hours. IGF-I (30 ng/mL) is added and the cells are incubated at 37 °C for 72 hours. Cell proliferation is quantified using the CellTiter-Glo Luminescent Cell Viability Assay. IC50 values are determined.

Experimental Result Images Methods Biomarkers Images PMID
Growth inhibition assay Cell number 28572530
In Vivo
In vivo GSK1904529A indicates 98% tumor growth inhibition in NIH-3T3/LISN tumor-bearing mice at a dose of 30 mg/kg (orally, twice-daily) and 75% in COLO 205 xenografts mice (once daily). Among HT29 and BxPC3 xenografts, GSK1904529A produces moderate tumor growth inhibition with no side effects at a dose of 30 mg/kg. Meanwhile, GSK1904529A shows minimal effects on blood glucose levels. GSK1904529A (~3.5 μM in blood) completely inhibits IGF-1R phosphorylation. GSK1904529A has been implicated in treatment of various IGF-1R-dependent tumors including prostate, colon, breast, pancreatic, ovarian, and sarcomas. [1]
Animal Research Animal Models NIH-3T3/LISN, COLO 205, HT29, and BxPC3 cells are implanted s.c. into the right flank of 8- to 10-wk-old female nu/nu CD-1athymic mice.
Dosages ~30 mg/kg
Administration Orally administered

Chemical Information & Solubility

Molecular Weight 851.96 Formula

C44H47F2N9O5S
CAS No. 1089283-49-7 SDF Download GSK1904529A SDF
Smiles CCC1=CC(=C(C=C1N2CCC(CC2)N3CCN(CC3)S(=O)(=O)C)OC)NC4=NC=CC(=N4)C5=C(N=C6N5C=CC=C6)C7=CC(=C(C=C7)OC)C(=O)NC8=C(C=CC=C8F)F
Storage (From the date of receipt)

In vitro
Batch:

DMSO : 124 mg/mL ( (145.54 mM) Moisture-absorbing DMSO reduces solubility. Please use fresh DMSO.)

Water : Insoluble

Ethanol : Insoluble


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In vivo
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Tech Support

Answers to questions you may have can be found in the inhibitor handling instructions. Topics include how to prepare stock solutions, how to store inhibitors, and issues that need special attention for cell-based assays and animal experiments.

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