Catalog No.S1180

XAV-939 selectively inhibits Wnt/β-catenin-mediated transcription through tankyrase1/2 inhibition with IC50 of 11 nM/4 nM in cell-free assays, regulates axin levels and does not affect CRE, NF-κB or TGF-β.

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XAV-939 Chemical Structure

XAV-939 Chemical Structure
Molecular Weight: 312.31

Validation & Quality Control

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Quality Control & MSDS

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Product Information

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  • Research Area
  • XAV-939 Mechanism

Product Description

Biological Activity

Description XAV-939 selectively inhibits Wnt/β-catenin-mediated transcription through tankyrase1/2 inhibition with IC50 of 11 nM/4 nM in cell-free assays, regulates axin levels and does not affect CRE, NF-κB or TGF-β.
Targets TNKS2 [1]
(Cell-free assay)
TNKS1 [1]
(Cell-free assay)
IC50 4 nM 11 nM
In vitro XAV-939 specifically inhibits tankyrase PARP activity. XAV-939 dramatically decreases DNA-PKcs protein levels, confirming the critical role of tankyrase poly-ADP-ribosylation activity in maintaining stability of the DNA-PKcs protein. The greatest reduction of DNA-PKcs protein levels (< 25% relative expression compared to DMSO treated controls) occurs at 12 hours with 1.0 μM XAV-939 exposure. Treatment of human lymphoblasts with 1.0 μM XAV-939 results in marked elevation of tankyrase 1 levels. [1] XAV-939 is axin stabilizing agent. XAV-939 stimulates beta-catenin degradation by stabilizing axin, the concentration-limiting component of the destruction complex. XAV-939 stabilizes axin by blocking the poly-ADP-ribosylating enzymes tankyrase 1 and tankyrase 2. Both tankyrase isoforms interact with a highly conserved domain of axin and stimulate its degradation through the ubiquitin-proteasome pathway. XAV-939 deregulates the Wnt/b-catenin pathway which has been implicated in many cancers. [2]
Cell Data
Cell LinesAssay TypeConcentrationIncubation TimeFormulationActivity DescriptionPMID

... Click to View More Cell Line Experimental Data

In vivo

Protocol(Only for Reference)

Cell Assay: [1]

Cell lines WTK1 lymphoblasts
Concentrations 1.0 μM
Incubation Time 8 hours
Method XAV-939 is solubilized in DMSO at 55 °C to make a 10 mM stock solution which may be diluted later to a working concentration of 100 μM. WTK1 lymphoblasts treated with either DMSO or 1.0 μM XAV-939 for 8 hours are loaded into independent wells of a 4-20% gradient SDS-PAGE every 2 hours over the course of 6 hours. At each time point, DMSO and XAV-939 samples are loaded into wells immediately adjacent to the prior time point. The corresponding load times at 0, 2 and 4 hours results in total run times of 2, 4 and 6 hours respectively. The gel is analyzed via western blot for DNA-PKcs following completion of the final run time and is quantified after normalization to actin loading controls.

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

SpeciesMouseRatRabbitGuinea pigHamsterDog
Weight (kg)
Body Surface Area (m2)0.0070.0250.
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] Dregalla RC, et al. Aging, 2010, 2(10), 691-708.

[2] Huang SM, et al. Nature, 2009, 461(7264), 614-620.

Chemical Information

Download XAV-939 SDF
Molecular Weight (MW) 312.31


CAS No. 284028-89-3
Storage 3 years -20℃powder
6 months-80℃in solvent
Synonyms NVP-XAV939
Solubility (25°C) * In vitro DMSO 12 mg/mL (38.42 mM)
Water <1 mg/mL (<1 mM)
Ethanol <1 mg/mL (<1 mM)
In vivo 30% PEG400+0.5% Tween80+5% propylene glycol 30 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 2-(4-(trifluoromethyl)phenyl)-7,8-dihydro-5H-thiopyrano[4,3-d]pyrimidin-4-ol

Customer Product Validation(5)

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Source Nat Commun 2014 5, 5455. XAV-939 purchased from Selleck
Method Immunostaining
Cell Lines P19 cells
Concentrations 4 uM
Incubation Time 72 h
Results P19 cells transfected with expression vectors for the control or ​Cdo-shRNA with Top-flash and β-galactosidase were treated with either ​dimethylsuphoxide (​DMSO) or ​XAV939 (4 uM) in differentiation medium for 24 h. ​P19/control or P19/​Cdo shRNA cells were treated with ​DMSO or ​XAV939 in the differentiation medium for 72 h followed by immunostaining. XAV939-treated control cells displayed a modest increase in ​β-tubulin III-positive cells, compared with the control-treated cells. Furthermore, ​Cdo-depleted P19 cells treated with ​DMSO exhibited a significant reduction in ​β-tubulin III-positive cells, while ​XAV939 treatment restored neuronal differentiation of these cells nearly to the control level.

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Source Dis Model Mech 2014 7(10), 1193-203. XAV-939 purchased from Selleck
Method Immunostaining
Cell Lines TH+ cells
Incubation Time 72 h
Results XAV-nano increased total cell number, the percentage of TH+ cells was reduced. This is illustrated in Figure.

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Source Dr. Marco Quarta of Stanford University. XAV-939 purchased from Selleck
Cell Lines
Concentrations 1-100 μM
Incubation Time

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Source XAV-939 purchased from Selleck
Method Sectional Immunohistochemistry
Cell Lines E14.5 male UGSs
Concentrations 10 μM
Incubation Time 4 d
Results Total bud numbers were compared among vehicle9 (control), TCDD9 (1 nM), DKK1 + DKK29 (500 ng/ml each), and XAV-939-(10 μM) treated UGSs by staining the UGE for e-cadherin and counting prostatic buds. All treatments decreased the total number of prostatic buds compared to control UGSs (p<0.05, Fig. 1, bottom). A confocal image that is representative of the UGS for each treatment is also shown (Fig. 1, top).

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Source XAV-939 purchased from Selleck
Method Sectional Immunohistochemistry
Cell Lines E14.5 male UGSs
Concentrations 10 μM
Incubation Time 4 d
Results Cell elongation index measured from spindle-like morphology was used to determine the effect of individual inhibitors. Prevention of MSP-induced spindle-like morphology was not observed in M-RON cells treated with wortmannin, SB203580, SP600125, Cay10512, and S31-201, suggesting that signaling from these pathways was not involved in MSP-induced EMT. A moderate effect, based on changes in elongation index, was seen when rapamycin, vismodegib, and XAV-939 were applied, suggesting that signaling from Hedgehog, Wnt /b-catenin, and FRAP/mTOR pathways played a role in MSP-induced EMT.

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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Cell Lines Assay Type Concentration Incubation Time Formulation Activity Description PMID
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