research use only
Cat.No.S1056
| Related Targets | EGFR VEGFR PDGFR FGFR c-Met Src MEK CSF-1R FLT3 c-Kit |
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| Other HER2 Inhibitors | CP-724714 Sapitinib (AZD8931) Mubritinib (TAK 165) Tyrphostin AG 879 HER2-Inhibitor-1 TAS0728 Zongertinib |
| Molecular Weight | 530.55 | Formula | C27H27FN8O3 |
Storage (From the date of receipt) | |
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| CAS No. | 714971-09-2 | Download SDF | Storage of Stock Solutions |
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| Synonyms | N/A | Smiles | CC1=C2C(=NC=NN2C=C1NC(=O)OCC3COCCN3)NC4=CC5=C(C=C4)N(N=C5)CC6=CC(=CC=C6)F | ||
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In vitro |
DMSO
: 113 mg/mL
(212.98 mM)
Ethanol : 20 mg/mL Water : Insoluble |
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In vivo |
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| Targets/IC50/Ki |
HER1
20 nM
HER2
30 nM
HER4
190 nM
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| In vitro |
AC480 (BMS-599626) is identified as an ATP-competitive inhibitor for HER1 and as an ATP-noncompetitive inhibitor for HER2 with Ki of 2 nM and 5 nM, respectively. It also inhibits the related receptor HER4, but with reduced potency with IC50 of 190 nM. This compound inhibits the proliferation of tumour cells expressing high levels of HER1 and/or HER2, including Sal2, BT474, N87, KPL-4, HCC202, HCC1954, HCC1419, AU565, ZR-75-30, MDA-MB-175, GEO, and PC9 cells with IC50 of 0.24 μM, 0.31 μM, 0.45 μM, 0.38μM, 0.94 μM, 0.34 μM, 0.75 μM, 0.63 μM, 0.51 μM, 0.84 μM, 0.90 μM and 0.34 μM, respectively. While the proliferation of the ovarian tumour cell line A2780 and MRC5 fibroblasts, neither of which expresses HER1 or HER2, are not inhibited significant by it. A recent study shows that it significantly enhances the radiosensitivity of HN-5 cells expressing both EGFR and Her2 cell, by promoting cycle redistribution and inhibiting DNA repair.
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| Kinase Assay |
Protein kinase assays
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The entire cytoplasmic sequences of HER1, HER2, and HER4 are expressed as recombinant proteins in Sf9 insect cells. HER1 and HER4 are expressed as fusion proteins with glutathione-S-transferase and are purified by affinity chromatography on glutathione-S-Sepharose. HER2 is subcloned into the pBlueBac4 vector and expressed as an untagged protein using an internal methionine codon (M687) for translation initiation. The truncated HER2 protein is isolated by chromatography on a column of DEAE-Sepharose equilibrated in a buffer that contains 0.1 M NaCl, and the recombinant protein is eluted with a buffer containing 0.3 M NaCl. For the HER kinase assays, reaction volumes are 50 μL and contains 10 ng of glutathione-S-transferase fusion protein or 150 ng of partially purified HER2. The mixtures also contains 1.5 μM poly(Glu/Tyr) (4:1), 1 μM ATP, 0.15 μCi [γ-33P]ATP, 50 mM Tris-HCl (pH 7.7), 2 mM DTT, 0.1 mg/mL bovine serum albumin, and 10 mM MnCl2. Reactions are allowed to proceed at 27°C for 1 hour and are terminated by the addition of 10 μL of a stop buffer (2.5 mg/mL bovine serum albumin and 0.3 M EDTA), followed by a 108-μL mixture of 3.5 mM ATP and 5% trichloroacetic acid. Acid-insoluble proteins are recovered on GF/C Unifilter plates with a Filtermate harvester. Incorporation of radioactive phosphate into the poly(Glu/Tyr) substrate is determined by liquid scintillation counting. Percent inhibition of kinase activity is determined by nonlinear regression analyses and data are reported as the inhibitory concentration required to achieve 50% inhibition relative to control reactions (IC50). Data are the averages of triplicate determinations. All other Protein Tyrosine Kinase are also assayed using poly(Glu/Tyr) as a substrate. Kinetics of HER1 and HER2 inhibition are determined in reaction mixtures that contains varying concentrations of ATP and AC480 (BMS-599626).
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| In vivo |
AC480 (BMS-599626) yields a potent anti-tumour activity in a human breast tumour KPL-4 xenograft at its maximum tolerated dose of 180 mg/kg, and also has similar anti-tumour activity in other HER2 amplified xenograft models, as well as other HER1-overexpressing xenograft models. In vivo, oral administration of this compound results in a dose-dependent inhibition of Sal2 tumour growth at doses ranging from 60 mg/kg to 240 mg/kg.
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References |
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(data from https://clinicaltrials.gov, updated on 2024-05-22)
| NCT Number | Recruitment | Conditions | Sponsor/Collaborators | Start Date | Phases |
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| NCT01245543 | Withdrawn | Solid Tumors |
Daiichi Sankyo |
November 2010 | Phase 1 |
| NCT00979173 | Completed | Glioma |
Annick Desjardins|Ambit Biosciences Corporation|Duke University |
November 2009 | Phase 1 |
| NCT00093730 | Completed | Unspecified Adult Solid Tumor Protocol Specific |
Jonsson Comprehensive Cancer Center|National Cancer Institute (NCI) |
August 2004 | Phase 1 |
| NCT00095537 | Completed | Cancer|Metastases |
Bristol-Myers Squibb |
March 2004 | Phase 1 |
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