R&D Systems Inc. Tocris Bioscience Boston Biochem

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

M.Wt:
514.65
Formula:
C30H42O7
Solubility:
Soluble to 10 mM in DMSO and to 20 mM in ethanol
Purity:
>98 %
Storage:
Store at -20°C
CAS No:
2222-07-3

The technical data provided above is for guidance only.
For batch specific data refer to the Certificate of Analysis.

Certificate of Analysis / Safety Data Sheet

Certificate of Analysis: View current batch
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Safety Data Sheet: View Safety Data Sheet

References

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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