XAV-939 Chemical Structure
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| Information | XAV-939 is a small molecule and selective Wnt pathway transcription factor β-catenin-mediated transcription inhibitor to TNKS1 and TNKS2 with IC50 of 11 nM and 4 nM, respectively. | |||||
|---|---|---|---|---|---|---|
| Targets | TNKS1 | TNKS2 | ||||
| IC50 | 11 nM [1] | 4 nM [1] | ||||
| 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] | |||||
| In vivo | ||||||
| Clinical Trials | ||||||
| Features | ||||||
| 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. |
| Molecular Weight (WM): | 312.31 |
|---|---|
| Formula: | C14H11F3N2OS |
| CAS No.: | 284028-89-3 |
| Synonyms: |
N/A
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| Dissolve in (25°C): | DMSO ≥3mg/mL |
| Water <1mg/mL | |
| Ethanol ≥5mg/mL | |
| Storage: | 2 years-20°CPowder |
| 1 week-4°Cin DMSO | |
| 1 month-80°in DMSO |
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cells plated at 2 x 10E4 in 24 multiwell with DMEM 10% FBS preconditioning 24 hrs (pretreatment withour wnt) switch medium from 2% HS + WNT 100 ng/ml |
cells plated at 2 x 10E4 in 24 multiwell with DMEM 10% FBS preconditioning 24 hrs (pretreatment withour wnt) switch medium from 2% HS + WNT 100 ng/ml
Data independently produced by Dr Marco Quarta of Stanford University XAV-939 purchased from Selleck
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