Cucurbitacin I

Cat. No. 1571

Cucurbitacin I C30H42O7 [2222-07-3]

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Alternative Names: Elatericin B, JSI 124

Chemical Name: (9β,10α,16α,23E)-2,16,20,25-Tetrahydroxy-9-methyl-19-norlanosta-1,5,23-triene-3,11,22-trione

Biological Activity

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.

Technical Data

Soluble to 10 mM in DMSO and to 20 mM in ethanol
>98 %
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.

Certificate of Analysis / Safety Data Sheet

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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 citation for this product please let us know.

Keywords: Cucurbitacin I, supplier, Selective, inhibitors, STAT3/JAK2, signaling, signalling, Janus, Activated, Kinase, JAK, Kinases, Signal, Transducers, activators, Transcription, STAT, CucurbitacinI, ElatericinB, JSI124

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