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Cat. No. M2304
TWS119 Structure
Size Price Availability Quantity
10mg USD 90 In stock
25mg USD 200 In stock
50mg USD 350 In stock
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Quality Control
  • Current batch:
  • Purity >99%
  • COA
  • MSDS
Biological Activity

TWS119 is a glycogen synthase kinase-3β inhibitor with an IC50 of 30 nM. TWS119 induces neuronal differentiation in pluripotent murine embryonal carcinoma cells and embryonic stem cells (ESCs) at 400 nM.

Cell Experiment
Cell lines megakaryocytes (MKs)
Preparation method To examine the inhibitory effects of p38MAPK, PI3K, and GSK-3β on MK differentiation and platelet production, hBMMNCs were cultured in MKLI media in the presence or absence (+/−) of each of the following inhibitors for 12 days: 5 µM SB202190 (AbMole, Houston, TX, USA) to inhibit p38MAPK; 10 µM LY294002 (AbMole, Houston, TX, USA) to inhibit PI3K; and 1 µM TWS119 (AbMole, Houston, TX, USA) to inhibit GSK-3β. To investigate the effect of GSK-3β inhibition on platelet production from mature MKs defined as CD41 (+)/CD42b (+)/propidium iodide (PI, Sigma) (−), as described later (flow cytometry analysis in the Methods), mature MKs were then cultured in MKLI media with TWS119 (+/−) for 6 days.
Concentrations 0, 0.17, 1, and 3 µM
Incubation time 12 days
Animal Experiment
Animal models Permanent focal cerebral ischemia rats
Formulation 1 % DMSO
Dosages 30 mg/kg
Administration intraperitoneal
Conversion of different model animals based on BSA (Value based on data from FDA Draft Guidelines)
Species Mouse Rat Rabbit Guinea pig Hamster Dog
Weight (kg) 0.02 0.15 1.8 0.4 0.08 10
Body Surface Area (m2) 0.007 0.025 0.15 0.05 0.02 0.5
Km factor 3 6 12 8 5 20
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.

Chemical Information
Molecular Weight 318.33
Formula C18H14N4O2
CAS Number 601514-19-6
Purity >99%
Solubility DMSO 40 mg/mL
Storage at -20°C

GSK-3β inhibitor TWS119 attenuates rtPA-induced hemorrhagic transformation and activates the Wnt/β-catenin signaling pathway after acute ischemic stroke in rats.
Wang W, et al. Mol Neurobiol. 2016 Dec;53(10):7028-7036. PMID: 26671619.

GSK-3β negatively regulates megakaryocyte differentiation and platelet production from primary human bone marrow cells in vitro.
Ono M, et al. Platelets. 2011;22(3):196-203. PMID: 21231855.

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Abmole Inhibitor Catalog 2017

Keywords: TWS119 supplier, GSK-3, inhibitors

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