Selective inhibitor of STAT3/JAK2 signaling. Inhibits the activation of STAT3 and JAK2 and displays no activity on Src, Akt, ERK and JNK. Suppresses phosphotyrosine levels of STAT3, inhibits STAT3 DNA binding and STAT3-mediated gene expression. Induces apoptosis in cell lines expressing constitutively active tyrosine-phosphorylated STAT3.
|Storage||Store at -20°C|
The technical data provided above is for guidance only. For batch specific data refer to the Certificate of Analysis.
All Tocris products are intended for laboratory research use only.
|Solvent||Max Conc. mg/mL||Max Conc. mM|
Preparing Stock Solutions
The following data is based on the product molecular weight 514.65. Batch specific molecular weights may vary from batch to batch due to solvent of hydration, which will affect the solvent volumes required to prepare stock solutions.
|Concentration / Solvent Volume / Mass||1 mg||5 mg||10 mg|
|1 mM||1.94 mL||9.72 mL||19.43 mL|
|5 mM||0.39 mL||1.94 mL||3.89 mL|
|10 mM||0.19 mL||0.97 mL||1.94 mL|
|50 mM||0.04 mL||0.19 mL||0.39 mL|
The reconstitution calculator allows you to quickly calculate the volume of a reagent to reconstitute your vial. Simply enter the mass of reagent and the target concentration and the calculator will determine the rest.
References are publications that support the products' biological activity.
Blaskovich et al (2003) Discovery of JSI-124 (cucurbitacin I), a selective janus kinase/signal transducer and activator of transcription 3 signaling pathway inhibitor with potent antitumor activity against human and murine cancer cells in mice. Cancer Res. 63 1270 PMID: 12649187
Nefedova et al (2005) Regulation of dendritic cell differentiation and antitumor immune response in cancer by pharmacologic-selective inhibition of the janus-activated kinase 2/signal transducers and activators of transcription 3 pathway. Cancer Res. 65 9525 PMID: 16230418
Dziennis et al (2007) Role of signal transducer and activator of transcription-3 in estradiol-mediated neuroprotection. J.Neurosci. 27 7268 PMID: 17611279
If you know of a relevant reference for Cucurbitacin I, please let us know.
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Keywords: Selective inhibitors inhibits STAT3/JAK2 signaling signalling Janus Activated Kinase JAK Kinases Signal Transducers activators Transcription STAT CucurbitacinI ElatericinB JSI124 Elatericin B JSI 124 JAK Kinase
4 Citations for Cucurbitacin I
Citations are publications that use Tocris products. Selected citations for Cucurbitacin I include:
Hamilton et al (2011) Cytokine induction of tumor necrosis factor receptor 2 is mediated by STAT3 in colon cancer cells. Mol Cancer Res 9 1718 PMID: 21994466
Rogers and Gahring (2015) Upregulation of Nicotinic Acetylcholine Receptor α4+β2 through a Ligand-Independent PI3Kβ Mechanism That Is Enhanced by TNFα and the Jak2/p38Mapk Pathways. Cell Rep 10 e0143319 PMID: 26619345
Wan et al (2014) Retinal injury, growth factors, and cytokines converge on β-catenin and pStat3 signaling to stimulate retina regeneration. J Neurosci 9 285 PMID: 25263555
Stechishin et al (2013) On-target JAK2/STAT3 inhibition slows disease progression in orthotopic xenografts of human glioblastoma brain tumor stem cells. Neuro Oncol 15 198 PMID: 23262510
Do you know of a great paper that uses Cucurbitacin I from Tocris? If so please let us know.