Antibodies
AZD2858 is a selective GSK-3 inhibitor with an IC50 of 68 nM, activating Wnt signaling, increases bone mass in rats.
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| Description | AZD2858 is a selective GSK-3 inhibitor with an IC50 of 68 nM, activating Wnt signaling, increases bone mass in rats. | |||||
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| Targets | GSK-3 | |||||
| IC50 | 68 nM[1] | |||||
| In vitro | AZD2858 is a selective GSK-3 inhibitor with an IC50 of 68 nM, inhibits tau phosphorylation at the S396 site, activates Wnt signaling pathway. AZD2858 treatment (1 μM, 12 h) on primary isolated human osteoblast-like cells results in a 3-fold increase of β-catenin levels. [1] AZD2858 causes β-catenin stabilisation in human and rat mesenchymal stem cells, stimulates hADSC commitment towards osteoblasts and osteogenic mineralisation in vitro. [2] | |||||
| In vivo | In rats, oral AZD2858 treatment causes a dose-dependent increase in trabecular bone mass compared to control after a two-week treatment with a maximum effect at a dose of 20 mg/kg once daily (total BMC: 172% of control). A small but significant effect is also seen at cortical sites (total BMC: 111% of control). [1] AZD285 treatment (30 μmol/kg) on rats daily for up to 3 weeks shows an increase in both mineral density (of 28% at 2 weeks and 38% at 3 weeks) and mineral content (of 81% at 2 weeks and 93% at 3 weeks) in the calluses. AZD285 treatment makes the fractures heals more rapidly, with a bony callus without an obvious endochondral component. [3] AZD2858 produces time-dependent changes in serum bone turnover biomarkers and increases bone mass over 28 days exposure in rats. After 7 days, AZD2858 increases the bone formation biomarker P1NP, and reduces the resorption biomarker TRAcP-5b, indicating increased bone anabolism and reduced resorption in rats. [2] | |||||
| Features | ||||||
| Tau phosphorylation assay | NIH-3T3 cells expressing 4-repeat Tau are used to assess functional activity of AZD2858 in vitro. The cells are grown in DMEM media and 2 mM L-glut, and 10% HiFCS, and plated at a concentration of 6×105 cells/well in 6-well plates. In each experiment, AZD2858 is dosed in triplicates at a concentration of 1, 10, 100, 500, 1000, 2000 and 10,000 nM. Cells are treated for 4 h prior to cell lysis using 100 μL ice cold lysis buffer (0.5% NP-40, 10 mM Tris, pH 7.2, 150 mM NaCl, 2 mM EDTA). A suspension is made with addition of protease and phosphatase inhibitors: 50 mM NaF, 0.2 mM NaVO4 and Cocktail Protease inhibitors. The solution is then snap frozen at − 80 °C for at least 1 h, before thawing on ice and lysate clarification by centrifugation, followed by Western blot according to standard protocols. After blocking, the blots are exposed to the primary antibody, Phospho-Ser396-tau (1:1000) over night, washed and incubated with the secondary antibody (donkey anti-rabbit, 1:5000), followed by a final wash. For re-probing, the primary antibody Tau5 (1:200) and the secondary horseradish peroxidase linked antibody (sheep anti-mouse, 1:10000) are used. All blots are developed using ECL Western blot detection reagents, Kodak X-ray films, quantified using densitometric analysis, and the ratio of S396 tau to total tau (tau5) is calculated. |
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| Cell lines | Human adipose derived stem cells and rat MSCs |
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| Concentrations | ~20 mM |
| Incubation Time | 24 h |
| Method | Human adipose derived stem cells and rat MSCs (isolated from bone marrow of Sprague Dawley rats at less than 8 weeks after gestation) are cultured in a basal media of DMEM containing 5% FBS and 2 mM GlutaMax. Cells are seeded in basal media into 96-well plates (3–5000 cells/well) for 18 h before treatment with AZD2858 (0.3 nM to 20 mM). After 24 h, β-catenin stabilisation is measured. |
| Animal Models | rat |
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| Dosages | 30 μmol/kg/day |
| Administration | orally |
| Solubility | 30% PEG400/0.5% Tween80/5% propylene glycol, 30 mg/mL |
| Molecular Weight (MW) | 453.52 |
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| Formula | C21H23N7O3S |
| CAS No. | 486424-20-8 |
| Storage | 3 years -20℃Powder |
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| 6 months-80℃in DMSO | |
| Syonnyms | N/A |
| Solubility (25°C) * | In vitro | DMSO | 7 mg/mL (15 mM) |
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| 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-Pyrazinecarboxamide, 3-amino-6-[4-[(4-methyl-1-piperazinyl)sulfonyl]phenyl]-N-3-pyridinyl- |
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