Amuvatinib (MP-470)

Catalog No.S1244 Synonyms: HPK 56

Amuvatinib (MP-470) Chemical Structure

Molecular Weight(MW): 447.51

Amuvatinib (MP-470) is a potent and multi-targeted inhibitor of c-Kit, PDGFRα and Flt3 with IC50 of 10 nM, 40 nM and 81 nM, respectively. Phase 2.

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In DMSO USD 235 In stock
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Cited by 6 Publications

4 Customer Reviews

  • Effects of treatment for 48h with a vehicle or the indicated doses of MP-470 in parental or ER1 and ER2 cell lines in the absence and presence of erlotinib on the indicated biomarkers. Data represent 3 independent experiments.

    Nat Genet 2012 44(8), 852-60. Amuvatinib (MP-470) purchased from Selleck.

    Inactivation of AXL by MP470 reverses epithelial to mesenchymal transition. Immunoblot analyses of lysates from TGFβ/TNFα- treated MCF10A cells treated with varying amounts of MP470 for 72 hours.

    Oncogene 2014 33(10), 1316-24. Amuvatinib (MP-470) purchased from Selleck.

  • Amuvatinib (3 umol/l, 72 h) leads to decreased pAXL, pAKT, and pERK expression by western blot.

    Melanoma Res 2014 24(5), 448-53. Amuvatinib (MP-470) purchased from Selleck.

    For MTT assays, cells (2,000 ~ 5,000 cells/well) were subcultured into 96-well plates according to their growth properties. Cell proliferation was assayed at 72 hr after treatment of MP-470 by adding 20 μl of 5 mg/ml 3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) solution per 100 μl of growth medium. After incubating for 3-4 h at 37°C, the media were removed and 150 µl/well of MTT solvent (either absolute DMSO or isopropanol containing 4 mM HCl and 0.1% Nonidet-40) was added to dissolve the formazan.

    Dr. Yong-Weon Yi from Georgetown University Medical Center. Amuvatinib (MP-470) purchased from Selleck.

Purity & Quality Control

Choose Selective c-Kit Inhibitors

Biological Activity

Description Amuvatinib (MP-470) is a potent and multi-targeted inhibitor of c-Kit, PDGFRα and Flt3 with IC50 of 10 nM, 40 nM and 81 nM, respectively. Phase 2.
Targets
c-Kit (D816H) [1] PDGFRα (V561D) [1] FLT3 (D835Y) [1]
10 nM 40 nM 81 nM
In vitro

The hydrochloride salt of MP-470 also inhibits several mutants of c-Kit, including c-KitD816V, c-KitD816H, c-KitV560G, and c-KitV654A, as well as a Flt3 mutant (Flt3D835Y) and two PDGFRα mutants (PDGFRαV561D and PDGFRαD842V), with IC50 of 10 nM to 8.4 μM. MP-470 potently inhibits the proliferation of OVCAR-3, A549, NCI-H647, DMS-153, and DMS-114 cells, with IC50 of 0.9 μM–7.86 μM. [1] MP-470 also inhibits c-Kit and PDGFRα, with IC50 values of 31 μM and 27 μM, respectively. MP-470 demonstrates potent cytotoxicity against MiaPaCa-2, PANC-1, and GIST882 cells, with IC50 of 1.6 μM to 3.0 μM. MP-470 also binds to and inhibits several c-Kit mutants, including c-KitK642E, c-KitD816V, and c-KitK642E/D816V. [2] In MDA-MB-231 cells, MP-470 (1 μM) inhibits tyrosine phosphorylation of AXL. [3] In LNCaP and PC-3, but not DU145 cells, MP-470 exhibits cytotoxicity with IC50 of 4 μM and 8 μM, respectively, and induces apoptosis at 10 μM. In LNCaP cells, MP-470 (10 μM) elicits G1 arrest and decreases phosphorylation of Akt and ERK1/2. [4] In SF767 cells, MP-470 (10 μM) inhibits c-Met phosphorylation and sensitizes cells to radiation. In combination with radiation, MP-470 (10 μM) inhibits glycogen synthase kinase (GSK)3β activity, induces apoptosis, and disrupts the repair of dsDNA breaks probably through suppression of Rad51. [5] [6]

Assay
Methods Test Index PMID
Growth inhibition assay
Cell viability; 

PubMed: 24950457     


Amuvatinib has growth inhibitory effects in NRAS but not BRAF-mutant melanoma cell lines. Melanoma cell lines were treated with increasing concentrations of amuvatinib for 72 hrs before being analyzed by the MTT assay.

24950457
Western blot
p-AXL / AXL / p-AKT / AKT / ERK / Rad51 ; 

PubMed: 24950457     


Amuvatinib (3 µM, 72 hrs), leads to decreased pAXL, pAKT and pERK expression by Western blot.

24950457
In vivo In mice xenograft models of HT-29, A549, and SB-CL2 cells, MP-470 (10 mg/kg–75 mg/kg via i.p. or 50 mg/kg–200 mg/kg via p.o.) inhibits tumor growth. [1] In mice bearing LNCaP xenograft, MP-470 (20 mg/kg) combined with Erlotinib significantly induces tumor growth inhibition (TGI). [4]

Protocol

Kinase Assay:[2]
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Kinase inhibition assay of c-Kit and PDGFRα:

For the testing of inhibitory activity against c-Kit and PDGFRα, enzymes are incubated with varying concentrations of MP-470 and radiolabeled γ-32P-ATP. After 30 min, the reaction mixtures are electrophoresed on an acrylamide gel and autophosphorylation, quantitated by the amount of radioactivity incorporated into the enzyme, is assayed.
Cell Research:[2]
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  • Cell lines: MiaPaCa-2, PANC-1, and GIST882 cells
  • Concentrations: 0–30 μM, dissolved in DMSO
  • Incubation Time: 96 hours
  • Method: Cells are plated at a density of 2 × 103 to 1 × 104 cells per well in 100 μL medium on day 0 in 96-well Falcon microtitier plates. On day 1, ten μL of serial dilutions of MP-470 are added to the plates in quadruplicates. After incubation for 4 days, the cells are fixed with 10% Trichloroacetic acid solution. Subsequently, they are labeled with 0.04% Sulforhodamine B (SRB) in 1% acetic acid. After multiple washes to remove the excess dye, 100 μL of 50 mM Tris solution is added to each well in order to dissolve the dye. The absorbance of each well is read on a plate reader at 570 nm. Date are expressed as the percentage of survival of control calculated from the absorbance corrected for background absorbance. The surviving percent of cells is determined by dividing the mean absorbance values of the monoclonal antibody by mean absorbance values of the control and multiplying by 100.
    (Only for Reference)
Animal Research:[1]
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  • Animal Models: Mice (athymic nude) xenograft models of HT-29, A549, and SB-CL2 cells
  • Formulation: Dissolved in corn oil for p.o.; Dissolved in TV-10 (60% propylene glycol, 30% PEG300, 10% water, and 150 mg/mL 2-hydroxypropyl-β-cyclodextrin) or TV-10 (5% ethanol, 40% glycerol, 55% water, and 300 mg/mL cyclodextrin) for i.p.
  • Dosages: 10 mg/kg–75 mg/kg (i.p.) or 50 mg/kg–200 mg/kg (p.o.)
  • Administration: Oral gavage (qd5 × 3 weeks) or intraperitoneal injection (qd5 × 2 weeks)
    (Only for Reference)

Solubility (25°C)

In vitro DMSO 32 mg/mL (71.5 mM)
Water Insoluble
Ethanol Insoluble
In vivo Add solvents to the product individually and in order(Data is from Selleck tests instead of citations):
30% PEG400+0.5% Tween80+5% propylene glycol
For best results, use promptly after mixing. 		30 mg/mL

* 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 Information

Molecular Weight 447.51
Formula

C23H21N5O3S
CAS No. 850879-09-3
Storage powder
in solvent
Synonyms HPK 56

Bio Calculators

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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.

Handling Instructions

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c-Kit Signaling Pathway Map

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  • Most Potent Kit Inhibitor

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  • Newest Kit Inhibitor

    Tyrphostin AG 1296 : An inhibitor of PDGFR with IC50 of 0.3-0.5 μM, inhibiting FGFR and c-Kit with IC50 of 12.3 μM and 1.8 μM in Swiss 3T3 cells.

  • Classic Kit Inhibitor

    Dovitinib (TKI-258, CHIR-258) : Multitargeted RTK inhibitor for class III (FLT3/c-Kit), class IV (FGFR1/3) and class V (VEGFR1-4) RTKs.

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Cell Lines Assay Type Concentration Incubation Time Formulation Activity Description PMID