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BIO-acetoxime GSK-3 inhibitor

Cat.No.S7915

BIO-acetoxime (GSK-3 Inhibitor X) is a potent dual GSK3α/β inhibitor with IC50 of 10 nM, >240-fold selectivity over CDK5/p25, CDK2/cyclin A and CDK1/cyclin B.
BIO-acetoxime GSK-3 inhibitor Chemical Structure

Chemical Structure

Molecular Weight: 398.21

Quality Control

Chemical Information, Storage & Stability

Molecular Weight 398.21 Formula

C18H12BrN3O3

Storage (From the date of receipt)
CAS No. 667463-85-6 Download SDF Storage of Stock Solutions

Synonyms GSK-3 Inhibitor X Smiles CC(=O)ON=C1C2=CC=CC=C2N=C1C3=C(NC4=C3C=CC(=C4)Br)O

Solubility

In vitro
Batch:

DMSO : 39 mg/mL (97.93 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO.)

Water : Insoluble

Ethanol : Insoluble

Molarity Calculator

Mass Concentration Volume Molecular Weight

In vivo
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Method for preparing in vivo formulation: Take μL DMSO master liquid, next addμL PEG300, mix and clarify, next addμL Tween 80, mix and clarify, next add μL ddH2O, mix and clarify.

Method for preparing in vivo formulation: Take μL DMSO master liquid, next add μL Corn oil, mix and clarify.

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Mechanism of Action

Targets/IC50/Ki
GSK-3α [1]
10 nM
GSK-3β [1]
10 nM
In vitro
In human oral epithelial cells, BIO-acetoxime suppresses viral gene expression and protects oral epithelial cells from HSV-1 infection. [2] In SY5Y-MYCN cells, this compound strongly reduces c-MYC expression and p-SMAD3 levels. It also decreases cell viability of KCN, KCNR, SY5Y, Kelly, and IMR32 cells by mediating apoptosis. [3] In HEK 293T cells, this chemical is also found to reduce antiviral innate immunity downstream of IRF3 activation by inhibition of GSK3α/β activities. [4]
Kinase Assay
Kinase Assays
Kinases activities are assayed in Buffer A or C, at 30 °C, at a final ATP concentration of 15 μM. Blank values are subtracted and activities calculated as pmoles of phosphate incorporated for a 10 min incubation. The activities are expressed in % of the maximal activity, i.e., in the absence of inhibitors. Controls are performed with appropriate dilutions of DMSO. GSK-3α/β is purified from porcine brain by affinity chromatography on immobilized axin. It is assayed, following a 1/100 dilution in 1 mg BSA/mL 10 mM DTT, with 5 μL 40 μM GS-1 peptide as a substrate, in buffer A, in the presence of 15 μM [γ-33P] ATP (3000 Ci/mmol; 1 mCi/mL) in a final volume of 30 μL. After 30 min incubation at 30 °C, 25 μL aliquots of supernatant are spotted onto 2.5 × 3 cm pieces of Whatman P81 phosphocellulose paper, and, 20 s later, the filters are washed five times (for at least 5 min each time) in a solution of 10 mL phosphoric acid/liter of water. The wet filters are counted in the presence of 1 mL of ACS scintillation fluid. CDK1/cyclin B is extracted in homogenization buffer from M phase starfish (Marthasterias glacialis) oocytes and purified by affinity chromatography on p9CKShs1-sepharose beads, from which it is eluted by free p9CKShs1. The kinase activity is assayed in buffer C, with 1 mg histone H1 /mL, in the presence of 15 μM [γ-32P] ATP (3000 Ci/mmol; 1 mCi/mL) in a final volume of 30 μL. After 10 min incubation at 30 °C, 25 μL aliquots of supernatant are spotted onto P81 phosphocellulose papers and treated as described above. CDK5/p25 is reconstituted by mixing equal amounts of recombinant mammalian CDK5 and p25 expressed in E. coli as GST (Glutathione-S-transferase) fusion proteins and purified by affinity chromatography on glutathione-agarose (p25 is a truncated version of p35, the 35 kDa CDK5 activator). Its activity is assayed in buffer C as described for CDK1/cyclin B.0
References

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