OSI-930

Catalog No.S1220

OSI-930 Chemical Structure

Molecular Weight(MW): 443.44

OSI-930 is a potent inhibitor of Kit, KDR and CSF-1R with IC50 of 80 nM, 9 nM and 15 nM, respectively; also potent to Flt-1, c-Raf and Lck and low activity against PDGFRα/β, Flt-3 and Abl. Phase 1.

Size Price Stock Quantity  
In DMSO USD 270 In stock
USD 150 In stock
USD 470 In stock
USD 770 In stock

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3 Customer Reviews

  • RE-luc2P-HEK293 cells were pretreated with 1uM OSI-930 (green), 20uM TBB (blue), 10uM CKI-7 (purple), or 10uM H-89 (orange) for 16 h and infected with Y. enterocolitica WA or Y. pestis Ind195 at MOI 1 and 20, respectively, for 1 h. Following stimulation with 10 ng/ml TNF-α at 5 h post-infection, luciferase activity was measured 24 h post-infection. Results were determined from two independent experiments performed in triplicate. A"*" denotes that the % NF-κβ inhibition using the inhibitors was significantly different (p<0.05) compared to the no drug control (black). The relative NF-κB inhibition by Yersinia infection was determined as a percentage of luciferase activity in bacteria-infected cells relative to luciferase activity in bacteria-free control cells.

    BMC Microbiol 2013 13, 249. OSI-930 purchased from Selleck.

     

    Table 2. shows the reversal effect of OSI-930 and Fumitremorgin C (FTC) on the cytotoxicity of mitoxantrone to HEK293/pcDNA3.1 and HEK293-ABCG2-482-R2.aIC50: concentration that inhibited cell survival by 50% (means ± SD). bFR: fold-resistance was the value of that IC50 value for mitoxantrone of HEK293/pcDNA3.1 cells was divided by IC50 value for mitoxantrone of HEK293/pcDNA3.1 and HEK293-ABCG2-482-R2 cells in the absence or presence of OSI-930 and Fumitremorgin C (FTC). Values in table are representative of at least three independent experiments performed in triplicate.

    OSI-930 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 OSI-930 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. OSI-930 purchased from Selleck.

Purity & Quality Control

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Notes:

2. For more details, such as half maximal inhibitory concentrations (IC50s) and working concentrations of each inhibitor, please click on the link of the inhibitor of interest.
3. "+" indicates inhibitory effect. Increased inhibition is marked by a higher "+" designation.
4. Orange "√" refers to compounds which do inhibitory effects on the related isoform, but without specific value.

Biological Activity

Description OSI-930 is a potent inhibitor of Kit, KDR and CSF-1R with IC50 of 80 nM, 9 nM and 15 nM, respectively; also potent to Flt-1, c-Raf and Lck and low activity against PDGFRα/β, Flt-3 and Abl. Phase 1.
Targets
FLT1 [1] KDR [1] CSF-1R [1] LCK [1] C-Raf [1]
8 nM 9 nM 15 nM 22 nM 41 nM
In vitro

OSI-930 inhibits the cell proliferation in the HMC-1 cell line with IC50 of 14 nM without significant effect on growth of the COLO-205 cell line that does not express a constitutively active mutant receptor tyrosine kinase. Moreover, OSI-930 also induces apoptosis in HMC-1 cell line with EC50 of 34 nM. [1] A recent study shows that OSI-930 inactivates purified, recombinant cytochrome P450 (P450) 3A4 with a Ki of 24 μM in a time- and concentration-dependent mode. [2]

In vivo OSI-930, administrated at the maximally efficacious dose of 200 mg/kg by oral gavage, exhibits potent antitumor activity in a broad range of preclinical xenograft models including HMC-1, NCI-SNU-5, COLO-205 and U251 xenograft models. [1]

Protocol

Kinase Assay:[1]
+ Expand

Protein kinase assays :

Protein kinase assays are either done in-house by ELISA-based assay methods (Kit, KDR, PDGFRα, and PDGFRβ) or by a radiometric method. In-house ELISA assays used poly(Glu:Tyr) as the substrate bound to the surface of 96-well assay plates; phosphorylation is then detected using an antiphosphotyrosine antibody conjugated to HRP. The bound antibody is then quantitated using ABTS as the peroxidase substrate by measuring the absorbance at 405/490 nm. All assays uses purified recombinant kinase catalytic domains that are either expressed in insect cells or in bacteria. The Kit and EGFR protein used for in-house assays are prepared internally; other enzymes are obtained. Recombinant Kit protein is expressed as an NH2-terminal glutathione S-transferase fusion protein in insect cells and is initially purified as a nonphosphorylated (nonactivated) enzyme with a relatively high Km for ATP (400 μM). In some assays, an activated (tyrosine phosphorylated) form of the enzyme is prepared by incubation with 1 mM ATP for 1 hour at 30 °C. The phosphorylated protein is then passed through a desalting column to remove the majority of the ATP and stored at −80 °C in buffer containing 50% glycerol. The resultant preparation has a considerably higher specific activity and a lower Km for ATP (25 μM) than the initial nonphosphorylated preparation. The inhibition of Kit autophosphorylation by OSI-930 is assayed by incubation of the nonphosphorylated enzyme at 30 °C in the presence of 200 μM ATP and various concentrations of OSI-930. The reaction is stopped by removal of aliquots into SDS-PAGE sample buffer followed by heating to 100 °C for 5 minutes. The degree of phosphorylation of Kit is then determined by immunoblotting for both total Kit and phosphorylated Kit.
Cell Research:[1]
+ Expand
  • Cell lines: HMC-1 and COLO-205
  • Concentrations: 0--1 μM
  • Incubation Time: 48 hours
  • Method: For assays of cell proliferation and apoptosis, cells are seeded into 96-well plates and incubated for 2 to 3 days in the presence of OSI-930 at various concentrations. Inhibition of cell growth is determined by luminescent quantitation of the intracellular ATP content using CellTiterGlo. Induction of caspase-dependent apoptosis by OSI-930 is quantitated by an enzymatic caspase 3/7 assay. Inhibition of angiogenesis by OSI-930 is monitored using the rat aortic ring endothelial sprout outgrowth assay. Sections of aorta are prepared from CO2-euthanized male rats and cultured in vitro in a collagen matrix in the presence or absence of OSI-930. The collagen matrix is prepared from type 1 rat tail collagen solubilized in 0.1% acetic acid at 3 mg/mL, which is combined with 0.125 volume collagen buffer (0.05 N NaOH, 200 mM HEPES, 260 mM NaHCO3), 0.125 volume of medium 199, 0.0125 volume of 1 M NaOH, and 1% GlutaMax. Aortic rings are embedded in 0.4 mL of this matrix in six-well plates, to which 0.5 mL endothelial basal medium and the appropriate amount of OSI-930 is added; the rings are then incubated for 10 days and the resultant angiogenic sprout outgrowth is digitally quantitated from images by measurement of the sprout-containing area within a series of concentric rings around the aortic tissue area.
    (Only for Reference)
Animal Research:[1]
+ Expand
  • Animal Models: HMC-1, NCI-SNU-5, COLO-205 and U251 cells are injected s.c. into the right flank of CD1 nu/nu mice.
  • Formulation: OSI-930 is dissolved in either Labrafil M 1944 CS or polyethylene glycol (PEG)-400/water (50:50).
  • Dosages: ≤200 mg/kg
  • Administration: Administered via p.o.
    (Only for Reference)

Solubility (25°C)

In vitro DMSO 89 mg/mL (200.7 mM)
Ethanol 3 mg/mL (6.76 mM)
Water <1 mg/mL
In vivo 30% PEG400+0.5% Tween80+5% propylene glycol 5 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 Information

Molecular Weight 443.44
Formula

C22H16F3N3O2S

CAS No. 728033-96-3
Storage powder
in solvent
Synonyms N/A

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Clinical Trial Information

NCT Number Recruitment Conditions Sponsor/Collaborators Start Date Phases
NCT00603356 Completed Advanced Solid Tumors Astellas Pharma Inc|OSI Pharmaceuticals November 2007 Phase 1
NCT00513851 Completed Advanced Solid Tumors Astellas Pharma Inc|OSI Pharmaceuticals April 2006 Phase 1

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Cell Lines Assay Type Concentration Incubation Time Formulation Activity Description PMID