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In vitro transcription of capped mRNA with modified nucleotides and Poly(A) tail
TSA (Tyramide Signal Amplification), used for signal amplification of ISH, IHC and IC etc.
Separation of phosphorylated and non-phosphorylated proteins without phospho-specific antibody
A convenient and sensitive way for cell proliferation assay and cytotoxicity assay
Protect the integrity of proteins from multiple proteases and phosphatases for different applications.
XAV-939 is a small-molecule inhibitor of tankyrase 1/2 with IC50 values of 4 and 11 nM, respectively [1].
XAV-939 was screened out as an inhibitor of Wnt/β-catenin pathway. In HEK293 cells, XAV-939 significantly inhibited the Wnt3a-stimulated STF activity and β-catenin accumulation. In SW480 cells, XAV-939 also inhibited STF activity and increased β-catenin phosphorylation. XAV-939 was demonstrated to stabilize the axin levels through inhibiting tankyrases and subsequently inhibit the Wnt signaling. It tightly bound to the catalytic domains of tankyrase 1 and tankyrase 2 with Kd values of 99 and 93 nM, respectively. In addition, XAV-939 significantly inhibited colony formation of β-catenin-dependent DLD-1 cells but not β-catenin-independent RKO cells [1].
References:[1] Huang S M A, Mishina Y M, Liu S, et al. Tankyrase inhibition stabilizes axin and antagonizes Wnt signalling. Nature, 2009, 461 (7264): 614-620.
Cell lines
HCT116 cells
Preparation method
The solubility of this compound in DMSO is >10 mM. General tips for obtaining a higher concentration: Please warm the tube at 37°C for 10 minutes and/or shake it in the ultrasonic bath for a while. Stock solution can be stored below -20°C for several months.
Reaction Conditions
20 μM, 24 hours
Applications
HCT116 cells were treated with XAV-939, then stained with PI and subjected to ?ow cytometric analysis or lysed and subjected to immunoblot analysis. The results showed that the number of cells arrest in G1 phase was 71.01%, as compared with the 45.54% of untreated control samples. Western blot analysis revealed that XAV-939 increased the level of AXIN and inhibited the expression of β-catenin.
Animal models
Mice
Dosage form
Intraperitoneal injection, 2.5 mg/kg, four times a day
Treatment of bleomycin challenged mice with XAV-939 reduced dermal thickening by 50% compared with sham-treated, bleomycin challenged mice. The number of myo?broblasts and the hydroxyproline content were also signi?cantly decreased in mice treated with XAV-939.
Other notes
Please test the solubility of all compounds indoor, and the actual solubility may slightly differ with the theoretical value. This is caused by an experimental system error and it is normal.
References:
[1] He L, Lu N, Dai Q, et al. Wogonin induced G1 cell cycle arrest by regulating Wnt/β-catenin signaling pathway and inactivating CDK8 in human colorectal cancer carcinoma cells. Toxicology, 2013, 312: 36-47.
[2] Distler A, Deloch L, Huang J, et al. Inactivation of tankyrases reduces experimental fibrosis by inhibiting canonical Wnt signalling. Annals of the rheumatic diseases, 2013, 72 (9): 1575-1580.
