Lenvatinib (E7080) is an orally active inhibitor of multiple receptor tyrosine kinases including VEGF, FGF and SCF receptors. Lenvatinib was found to be transformed to a GSH conjugate, through displacement of an O-aryl moiety, at the quinoline part of the molecule in the liver and kidneys. The GSH conjugate underwent further hydrolysis by γ-glutamyltranspeptidase and dipeptidases, followed by intramolecular rearrangement, to form N-cysteinyl quinoline derivatives, which were dimerized to form disulfide dimers and also formed an N,S-cysteinyl diquinoline derivative. In urine, a thioacetic acid conjugate of the quinoline was also observed as one of the major metabolites of lenvatinib. Lenvatinib is a 4-O-aryl quinoline derivative, and such compounds have been known to undergo conjugation with GSH, accompanied by release of the O-aryl moiety. Because of intramolecular rearrangement in the case of lenvatinib, hydrolysis of the GSH conjugate yielded N-cysteinylglycine and N-cysteine conjugates instead of the corresponding S-conjugates. Because the N-substituted derivatives possess free sulfhydryl groups, dimerization through disulfide bonds and another nucleophilic substitution reaction with lenvatinib resulted in the formation of disulfanyl dimers and an N,S-cysteinyl diquinoline derivative, respectively. Oral administration of Lenvatinib inhibited tumor growth of H146 cells at doses of 30 and 100 mg/kg in a dose-dependent manner and caused tumor regression at 100 mg/kg. While anti-VEGF antibody also slowed tumor growth, it did not cause tumor regression. These results indicate that KIT signaling has a role in tumor angiogenesis of SCF-producing H146 cells, and Lenvatinib causes regression of H146 tumors as a result of antiangiogenic activity mediated by inhibition of both KIT and VEGF receptor signaling.
|Cell lines||H146 cells|
|Preparation method||Proliferation assay
H146 (1.2 3 103 cells/50 lL/well) in SFM containing 0.5% BSA were cultured in 96-well multi-plates. After overnight culture at 37℃, SFM (150 lL/well) containing 0.5% FBS and several concentrations of SCF were added with or without several concentrations of compound. After culture for 72 hr, the ratios of surviving cells were measured by WST-1.
|Incubation time||72 hr|
|Animal models||Female BALB/c nude mice H146 cells tumor xenograft model|
|Dosages||30, 100mg/kg twice a day from day 1 to day 21|
|Body Surface Area (m2)||0.007||0.025||0.15||0.05||0.02||0.5|
|Animal A (mg/kg) = Animal B (mg/kg) multiplied by||Animal B Km|
|Animal A Km|
For example, to modify the dose of resveratrol used for a mouse (22.4 mg/kg) to a dose based on the BSA for a rat, multiply 22.4 mg/kg by the Km factor for a mouse and then divide by the Km factor for a rat. This calculation results in a rat equivalent dose for resveratrol of 11.2 mg/kg.
A phase I study of E7080, a multitargeted tyrosine kinase inhibitor, in patients with advanced solid tumours.
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Development and validation of LC-MS/MS assays for the quantification of E7080 and metabolites in various human biological matrices.
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E7080, a multi-targeted tyrosine kinase inhibitor suppresses tumor cell migration and invasion.
Glen et al. BMC Cancer. 2011 Jul 22;11:309. PMID: 21781317.
E7080 suppresses hematogenous multiple organ metastases of lung cancer cells with nonmutated epidermal growth factor receptor.
Ogino et al. Mol Cancer Ther. 2011 Jul;10(7):1218-28. PMID: 21551260.
E7080, a novel inhibitor that targets multiple kinases, has potent antitumor activities against stem cell factor producing human small cell lung cancer H146, based on angiogenesis inhibition.
Matsui J, et al. Int J Cancer. 2008 Feb 1;122(3):664-71. PMID: 17943726.
|Related VEGFR/PDGFR Products|
Sunitinib is a multi-targeted RTK inhibitor targeting VEGFR2 (Flk-1) and PDGFRβ with IC50 of 80 nM and 2 nM, and also inhibits c-Kit.
Avapritinib (BLU-285) is a small molecule kinase inhibitor that potently inhibits PDGFRα D842V mutant activity in vitro (IC50 = 0.5 nM) and PDGFRα D842V autophosphorylation in the cellular setting (IC50 = 30 nM); also a potent inhibitor of the analogous KIT mutation, D816V in KIT Exon 17 (IC50 = 0.5 nM).
|Nintedanib Ethanesulfonate Salt
BIBF 1120 esylate is a potent triple angiokinase inhibitor for VEGFR1/2/3, FGFR1/2/3 and PDGFRα/β with IC50s of 34 nM/13 nM/13 nM, 69 nM/37 nM/108 nM and 59 nM/65 nM, respectively.
Regorafenib (BAY 73-4506) is a multi-target inhibitor for VEGFR1, VEGFR2, VEGFR3, PDGFRβ, Kit, RET and Raf-1 with IC50 of 13 nM/4.2 nM/46 nM, 22 nM, 7 nM, 1.5 nM and 2.5 nM, respectively.
|Pazopanib HCl (GW786034 )
Pazopanib HCl (GW786034 HCl) is a novel multi-target inhibitor of VEGFR1, VEGFR2, VEGFR3, PDGFR, FGFR, c-Kit and c-Fms with IC50 of 10 nM, 30 nM, 47 nM, 84 nM, 74 nM, 140 nM and 146 nM in cell-free assays, respectively.
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