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Nazartinib mesylate(EGF81)
本产品不向个人销售,仅用作科学研究,不用于任何人体实验及非科研性质的动物实验。
Nazartinib mesylate(EGF81)图片
CAS NO:1508250-72-3
规格:≥98%
包装与价格:
包装价格(元)
5mg电议
10mg电议
25mg电议
50mg电议
100mg电议
250mg电议

产品介绍
Nazartinib mesylate (formerly known as EGF816 mesylate and NVS-816 mesylate) is a novel, covalent/irreversible, and mutant-selective EGFR inhibitor with Ki and Kinact of 31 nM and 0.222 min–1 on EGFR(L858R/790M) mutant, respectively. Nazartinib specifically targets EGFR-activating mutations arising de novo and upon resistance acquisition, while sparing wild-type (WT) EGFR. Non-small cell lung cancer patients carrying oncogenic EGFR mutations initially respond to EGFR-targeted therapy, but later elicit minimal response due to dose-limiting toxicities and acquired resistance.Nazartinib potently inhibits the most common EGFR mutations L858R, Ex19del, and T790M in vitro. The cellular activity of EGF816 on EGFR mutants are assessed using three well-characterized cell lines, H3255, HCC827, and H1975, which harbor the L858R, Ex19del, and L858R/T790M mutations, respectively. Nazartinib is currently under clinical evaluation (phase I/II clinical trials) in patients harboring EGFR mutations, including T790M.
理化性质和储存条件
Molecular Weight (MW)591.12
FormulaC27H35ClN6O5S
CAS No. 1508250-72-3 (mesylate)
Storage-20℃ for 3 years in powder form
-80℃ for 2 years in solvent
Solubility (In vitro)DMSO: 99 mg/mL (200mM)
Water: <1 mg/mL
Ethanol: 99 mg/mL (200mM)
Solubility (In vivo) O=C(NC1=NC2=CC=CC(Cl)=C2N1[C@H]3CN(C(/C=C/CN(C)C)=O)CCCC3)C4=CC=NC(C)=C4.CS(=O)(O)=O
Synonyms EGF816 mesylate; EGF-816 mesylate; EGF 816 mesylate; NVS-816 mesylate; NVS 816; NVS816; Nazartinib mesylate
实验参考方法
In Vitro

In vitro activity: EGF816 has inhibitory effect on the mutant cell lines with IC50s of 4, 6, 2 nM in H1975, H3255, and HCC827, respectively, and demonstrates improved ADME and PK properties. EGF816 shows potent inhibition of pEGFR levels in H3255, HCC827, and H1975 cell lines with EC50 values of 5, 1, and 3 nM, respectively. EGF816 inhibits cell proliferation, with EC50 values of 9, 11, and 25 nM in H3255, HCC827, and H1975, respectively. EGF816 has an OC50 (compound concentration at 50% occupancy) value of 2 and 5 nM on HCC827 and H1975, respectively.


Kinase Assay: Recombinant kinase domain of EGFR L858R and T790M-L858R mutants are incubated with EGF816 to confirm covalent modification of EGFR and site of adduction. Recombinant enzyme is incubated at room temperature with a 20-fold molar excess of compound in 40 mM Tris, pH 8, 500 mM NaCl, 1% glycerol, 5 mM TCEP for 1 h. The reaction is quenched by addition of dithiothreitol (DTT, 80-fold excess to compound) and transfer to ice. A third of the reaction (10 μL) is processed for intact MS by adding an equal volume of 6 M Guan HCl, 100 mM Tris, pH 8, 20 mM DTT, 10 mM TCEP and incubating at room temperature for 15 min. Intact MS analysis is performed on an Agilent 6520 QToF mass spectrometer equipped with a dual spray ion source (IS of 4500 V, fragmentor of 250 V, fas temp of 350°C, and skimmer of 75 V). The samples are injected onto a PLRP-S column (2.1 mm × 50 mm), heated to 60°C, and desalted for 2 min at 500 μL/min and 3% B prior to elution with a fast gradient of 3-50% B in 3 min (B, 0.1% formic acid). The data are analyzed in MassHunter for automatic peak selection, integration, and spectral deconvolution with a mass range of 15 000-75 000 Da.


Cell Assay: H1975, H3255, HCC827, A431, and HaCaT cells are maintained in RPMI media supplemented with antibiotics and 10% FBS, maintained in a 37°C, 5% CO2 humidified incubator. After an overnight incubation in 384-well plates, serial diluted compounds are transferred to cells and incubated for 3 hours. HaCaT cells are stimulated with 10 ng/mL EGF (50 ng/mL EGF for A431) for 5 minutes. Cells are lysed in 1% Triton X-100 buffer containing protease and phosphatase inhibitors. Lysates are analyzed by sandwich ELISA utilizing goat anti-EGFR capture antibody, anti-phospho-EGFR(Y1173), and anti-rabbit HRP. Signal is measured by chemiluminescent detection.

In VivoIn H1975 mouse xenograft model, EGF816 (50 and 20 mg/kg or 25 mg/kg, p.o.) demonstrates dose-dependent efficacy with near complete tumor cells regression at the highest dose tested (50 mg/kg). In H1975 mouse model, EGF816 (10 mg/kg, p.o.) induces tumor growth inhibition with a T/C (tumor/control volume) of 29%, and when doses are 30 and 100 mg/kg, tumor regressions are achieved (T/C, –61% and –80%, respectively). In the H3255 xenograft model, EGF816 (30 mg/kg, p.o.) shows significant antitumor activity. Antiproliferative activity of EGF816 on 89 lung cancer cell lines indicates that EGF816 selectively inhibits cell lines containing EGFR with catalytic domain mutations.
Animal modelbalb/c mice and male Wistar rats
Formulation & DosageDissolved in 5% ethanol, 25% PEG300, and 70% D5W (5% dextrose in water); 50 mg/kg; Oral administration.
References

Cancer Res. 2016 Mar 15;76(6):1591-602; J Med Chem. 2016 Jul 28;59(14):6671-89.