SAR131675

Catalog No.S2842

SAR131675 is a VEGFR3 inhibitor with IC50/Ki of 23 nM/12 nM in cell-free assays, about 50- and 10-fold more selective for VEGFR3 than VEGFR1/2, little activity against Akt1, CDKs, PLK1, EGFR, IGF-1R, c-Met, Flt2 etc.

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SAR131675 Chemical Structure

SAR131675 Chemical Structure
Molecular Weight: 358.39

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Product Description

Biological Activity

Description SAR131675 is a VEGFR3 inhibitor with IC50/Ki of 23 nM/12 nM in cell-free assays, about 50- and 10-fold more selective for VEGFR3 than VEGFR1/2, little activity against Akt1, CDKs, PLK1, EGFR, IGF-1R, c-Met, Flt2 etc.
Targets VEGFR3 [1]
(Cell-free assay)
IC50 23 nM
In vitro SAR131675 dose dependently inhibits the proliferation of primary human lymphatic cells, induced by the VEGFR-3 ligands VEGFC and VEGFD, with an IC50 of about 20 nM. SAR131675 dose dependently inhibits rh-VEGFR-3–TK activity with an IC50 of 23 nM. SAR131675 inhibits VEGR-3–TK activity with a Ki of about 12 nM. SAR131675 inhibits VEGFR-1–TK activity with an IC50 of > 3 μM and VEGFR-2–TK activity with an IC50 of 235 nM. SAR131675 inhibits VEGFR-1 autophosphorylation with an IC50 of about 1 μM and VEGFR-2 with an IC50 of about 280 nM. SAR131675 moderately inhibits VEGFR-2 and has very little effect on VEGFR-1, showing a good selectivity for VEGFR-3. SAR131675 inhibits VEGFA-induced VEGFR-2 phosphorylation in a dose-dependent manner, with an IC50 of 239 nM. SAR131675 potently inhibits lymphatic cell survival induced by VEGFC and VEGFD with IC50 of 14 nM and 17 nM, respectively. SAR131675 inhibits VEGFA-induced survival with an IC50 of 664 nM. SAR131675, significantly and dose dependently inhibits VEGFC-induced Erk phosphorylation, with an IC50 of about 30 nM. [1]
In vivo In embryonic angiogenesis using the zebrafish model, SAR131675 efficiently impaires embryonic vasculogenesis. SAR131675 at 100 mg/kg/d has significantly reduced the levels of VEGFR-3 and hemoglobin content by about 50%. SAR131675 efficiently abrogates lymphangiogenesis and angiogenesis induced in vivo by FGF2. SAR131675 at a dose of 300 mg/kg is able to inhibit both VEGFR-2 and VEGFR-3 signaling. In the prevention study, 5 weeks treatment with SAR131675 is well tolerated and the number of angiogenic islets in the pancreas of SAR131675-treated mice is significantly decreased by 42%, compared with the vehicle-treated group. In the intervention study, daily oral administration of SAR131675 from week 10 to week 12.5 causes a significant decrease in tumor burden by 62%. Treatment with SAR131675 significantly reduces the tumor volume 24% and 50% at 30 mg/kg/d and 100 mg/kg/d, respectively. [1]
Features A potent and selective VEGFR-3–tyrosine kinase inhibitor.

Protocol(Only for Reference)

Kinase Assay: [1]

Tyrosine kinase assay Multiwell plates are precoated with a synthetic polymer substrate poly-Glu-Tyr (polyGT 4:1). The reaction is carried out in the presence of kinase buffer (10 ×: 50 mM HEPES buffer, pH 7.4, 20 mM MgCl2, 0.1 mM MnCl2, and 0.2 mM Na3VO4) supplemented with ATP and dimethyl sulfoxide (DMSO) for the positive control (C+) or SAR131675 (ranging from 3 nM–1,000 nM). ATP is used at 30 μM for VEGFR-1 and VEGFR-3 and at 15 μM for VEGFR-2. The phosphorylated poly-GT is probed with a phosphotyrosine specific monoclonal antibody (mAb) conjugated to horseradish peroxidase (HRP; 1/30,000) and developed in the dark with the HRP chromogenic substrate (OPD). The reaction is then stopped by the addition of 100 μL 1.25 M H2SO4, and absorbance is determined using an Envision spectrophotometer at 492 nm.

Animal Study: [1]

Animal Models BALB/c mice with 4T1 cells
Formulation Dissolved on the day of use in a 0.6% methylcellulose/0.5% Tween 80 solution.
Dosages 30 mg/kg/d, 100 mg/kg/d, and 300 mg/kg/d
Administration Oral

Conversion of different model animals based on BSA (Value based on data from FDA Draft Guidelines)

SpeciesMouseRatRabbitGuinea pigHamsterDog
Weight (kg)0.020.151.80.40.0810
Body Surface Area (m2)0.0070.0250.150.050.020.5
Km factor36128520
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.

Rat dose (mg/kg) = mouse dose (22.4 mg/kg) ×  mouse Km(3)  = 11.2 mg/kg
rat Km(6)
1

References

[1] Alam A, et al. Mol Cancer Ther, 2012, 11(8), 1637-1649.

Chemical Information

Download SAR131675 SDF
Molecular Weight (MW) 358.39
Formula

C18H22N4O4

CAS No. 1433953-83-3
Storage 3 years -20℃powder
2 years -80℃in solvent
Synonyms N/A
Solubility (25°C) * In vitro DMSO 30 mg/mL (83.7 mM)
Water <1 mg/mL
Ethanol <1 mg/mL
In vivo 0.5% CMC+0.25% Tween 80 20 mg/mL
* <1 mg/ml means slightly soluble or insoluble.
* Please note that Selleck tests the solubility of all compounds in-house, and the actual solubility may differ slightly from published values. This is normal and is due to slight batch-to-batch variations.
Chemical Name (R)-2-amino-1-ethyl-7-(3-hydroxy-4-methoxy-3-methylbut-1-ynyl)-N-methyl-4-oxo-1,4-dihydro-1,8-naphthyridine-3-carboxamide

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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