CUCURBITACIN B HYDRATE >=97% (HPLC) (C005B-053287)

Application

Cucurbitacin B hydrate has been used:

• as a signal transducer and activator of transcription 3 (stat3) inhibitor to determine its effect on the expression of human lysosomal acid lipase (hLAL) in myeloid-derived suppressor cells (MDSCs).
• as an ecdysone receptor (EcR) antagonist injection to lower the levels of 20-hydoxyecdysone (20E) signaling in butterflies.
• to determine its effect on the cell viability of pancreatic cancer cell lines.

Biochem/physiol Actions

Cucurbitacin B also exhibits anti-cancer activity by inhibiting telomerase and c-Myc in breast cancer. It also exhibits anti- artherosclerotic activity. Cucurbitacin B also possesses anti-inflammatory and anti-microbial activity.

Cucurbitacin B is a triterpenoid constituent of Cucurbitaceae plant species. Cucurbitacin B inhibits proliferation in a wide variety of tumor cell lines (IC50 15-30 nM) by inducing apoptosis and inducing cell cycle arrest at G2/M phase. Although the mechanism of action is unclear, Cucurbitacin B inhibits STAT 3 phosphorylation and expression levels and has been shown to block JAK2 activity. Curcubitacin B also inhibits the transcriptional activity of HIF1a and Nf-KB. Curcubitacin B is structurally similar to the JAK inhibitor Curcubitacin I.

Features and Benefits

This compound is a featured product for Kinase Phosphatase Biology research. Click here to discover more featured Kinase Phosphatase Biology products. Learn more about bioactive small molecules for other areas of research at sigma.com/discover-bsm.

This compound is featured on the JAKs page of the Handbook of Receptor Classification and Signal Transduction. To browse other handbook pages, click here.

Molecular Weight: 558.70 (anhydrous basis). Empirical Formula: C₃₂H₄₆O₈ · xH₂O. Quality Level: 100. Assay: ≥. 97% (HPLC). form: powder. color: white to beige. solubility: DMSO: 10 . mg/mL, clear. storage temp.: 2-8°C. SMILES string: CC1(C)C([C@@H](O)C[C@]2([H])C1: CC[C@]([C@@](C[C@@H](O)[C@]3([H])[C@@](C)(O)C(/C: C/C(C)(C)OC(C): O): O)(C)[C@]3(C)C4)([H])[C@@]2(C)C4: O): O. InChI: 1S/C32H46O8/c1-17(33)40-27(2,3)13-12-23(36)32(9,39)25-21(35)15-29(6)22-11-10-18-19(14-20(34)26(38)28(18,4)5)31(22,8)24(37)16-30(25,29)7/h10,12-13,19-22,25,34-35,39H,11,14-16H2,1-9H3/b13-12+/t19-,20+,21-,22+,25+,29+,30-,31+,32+/m1/s1. InChI key: IXQKXEUSCPEQRD-DKRGWESNSA-N. Pictograms: GHS06. Signal Word: Danger. Hazard Statements: H300. Precautionary Statements: P264 - P270 - P301 + P310 - P405 - P501. Hazard Classifications: Acute Tox. 2 Oral. Storage Class Code: 6.1A - Combustible, acute toxic Cat. 1 and 2 / very toxic hazardous materials. WGK: WGK 3. Flash Point(F): Not applicable. Flash Point(C): Not applicable.