Patupilone (EPO906, Epothilone B)
Catalog No.S1364
Molecular Weight(MW): 507.68
Patupilone (EPO906, Epothilone B) is a paclitaxel-like microtubule-stabilizing agent with EC0.01 of 1.8 μM. Phase 2.
Cited by 5 Publications
4 Customer Reviews
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Matrigel invasion assay of H1299 cells treated with SDF-1α or SDF-1α plus Epothilone B prior to 0 or 2 Gy irradiation. After the treatment for 12 h, the H1299 cells that migrated to the bottom surface of the membrane were stained with Giemsa, and the number of migrated cells was calculated manually.
Oncotarget, 2015, 6(13):10893-907.. Patupilone (EPO906, Epothilone B) purchased from Selleck.
Combination treatment with epothilone B and ABT-737 inhibited PI3K/AKT/mTOR pathway. SKOV-3 cells were treated with epothilone B (0.4 nM), ABT-737 (5 μM), or the combination, OVCAR-8 cells were treated with epothilone B (0.3 nM), ABT-737 (3 μM), or the combination, SGC-7901 were treated with epothilone B (0.4 nM), ABT-737 (5 μM), or the combination. Cells were exposed to compounds for 48 h, after which protein extracts were immunoblotted with specified antibodies for p-4E-BP-1, p-mTOR, p-AKT, caspase-3, PARP and β-actin.
J Cancer Res Clin Oncol, 2016, 142(11):2281-9. Patupilone (EPO906, Epothilone B) purchased from Selleck.
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Combination treatment with epothilone B and ABT-737 inhibited PI3K/AKT/mTOR pathway. SKOV-3 cells were treated with epothilone B (0.4 nM), ABT-737 (5 μM), or the combination, OVCAR-8 cells were treated with epothilone B (0.3 nM), ABT-737 (3 μM), or the combination, SGC-7901 were treated with epothilone B (0.4 nM), ABT-737 (5 μM), or the combination. Cells were exposed to compounds for 48 h, after which protein extracts were immunoblotted with specified antibodies for p-4E-BP-1, p-mTOR, p-AKT, caspase-3, PARP and β-actin.
J Cancer Res Clin Oncol, 2016, 142(11):2281-9.. Patupilone (EPO906, Epothilone B) purchased from Selleck.
Cells were seeded in 96 well paltes, and then treated with the indicated concentration of Epothilone B for 48 h. Cell survival was measured by a standarad MTT assay.
Dr. Helen Sadik of Johns Hopkins University. Patupilone (EPO906, Epothilone B) purchased from Selleck.
Purity & Quality Control
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Biological Activity
| Description | Patupilone (EPO906, Epothilone B) is a paclitaxel-like microtubule-stabilizing agent with EC0.01 of 1.8 μM. Phase 2. | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| In vitro |
Epothilone B shows better activity than Epothilone A. The EC0.01 of Epothilone B is 1.8 μM. Epothilone B potently inhibits cell proliferation in HCT116 cells, with IC50 of 0.8 nM. [1] Epothilone B induces mitotic arrest and displays cytotoxicity in KB3-1, KBV-1, Hela, and Hs578T cells, with IC50 of 3 nM to 92 nM. Epothilone B competes with Taxol in binding to microtubules, with IC50 of 3.3 μM. [2] In MCF-7 cells overexpressing GFP-α-tubulin, Epothilone B (3.5 nM) efficiently blocks microtubule dynamics. Meanwhile, Epothilone B induces mitotic arrest with IC50 of 3.5 nM. [3] In multiple myeloma (MM) cells, including RPMI 8226, U266, MM.1S, LR5, and MR20, Epothilone B directly suppresses proliferation with IC50 of 1 nM to 10 nM. Similarly, Epothilone B (10 nM) also induces cell cycle arrest and apoptosis. [4] A recent study reveals that, in ovarian cancer Hey cells, Epothilone B (5 nM–100 nM) enhances surface epithelial cell adhesion antigen (EpCAM), without affecting the transcription or the total cellular level of EpCAM. [5] |
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| Cell Data |
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| In vivo | In a mouse xenograft model of RPMI 8226 cells, Epothilone B (2.5 mg/kg–4 mg/kg) prolongs survival and suppresses tumor growth. [4] Similarly, in mouse xenograft models of prostate cancer cells, including DU145 and PC3, Epothilone B at the same dose also inhibits tumor growth. [6] |
Protocol
| Kinase Assay:[1] |
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Tubulin polymerization assay: Calf brain microtubule proteins (MTP) are purified, which includes approximately 15%–20% microtubule associated proteins. The buffer (MES buffer) used for the Epothilone B-microtubule studies contains 0.1 M 2-morpholinoethanesulfonic acid (MES), 1 mM EGTA, 0.5 mM MgCl2, and 3 M glycerol at pH 6.6. Samples for electron microscopy are placed on carbon-over-Parlodion-coated grids (300 mesh) and negatively stained with 2% uranyl acetate. Microtubule assembly in the presence or absence of Epothilone B is monitored spectrophotometrically by using a spectrophotometer equipped with a thermostatically regulated liquid circulator. The temperature is held at 35 °C and changes in turbidity (representative of polymer mass) are monitored at 350 nm. Effective concentration (EC0.01), defined as the interpolated concentration capable of inducing an initial slope of 0.01 OD/min rate, is calculated using the formula EC0.01 = concentration/slope and expressed as the mean with standard deviation obtained from three different concentrations. |
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| Cell Research:[2] |
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| Animal Research:[4] |
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Solubility (25°C)
| In vitro | DMSO | 102 mg/mL (200.91 mM) |
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| Ethanol | 102 mg/mL (200.91 mM) | |
| Water | Insoluble | |
| In vivo | Add solvents to the product individually and in order(Data is from Selleck tests instead of citations): 30% PEG400+0.5% Tween80+5% propylene glycol For best results, use promptly after mixing. |
5 mg/mL |
* Please note that Selleck tests the solubility of all compounds in-house, and the actual solubility may differ slightly from published values. This is normal and is due to slight batch-to-batch variations.
Chemical Information
| Molecular Weight | 507.68 |
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| Formula | C27H41NO6S |
| CAS No. | 152044-54-7 |
| Storage | powder |
| in solvent | |
| Synonyms | N/A |
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Clinical Trial Information
| NCT Number | Recruitment | Conditions | Sponsor/Collaborators | Start Date | Phases |
|---|---|---|---|---|---|
| NCT00715013 | Completed | Recurrent Glioblastoma Planned for Reoperation | University of Zurich | July 2008 | Phase 1|Phase 2 |
| NCT00715013 | Completed | Recurrent Glioblastoma Planned for Reoperation | University of Zurich | July 2008 | Phase 1|Phase 2 |
| NCT00496600 | Completed | Refractory Malignancy | University of Medicine and Dentistry of New Jersey|Novartis Pharmaceuticals|National Cancer Institute (NCI)|Rutgers The State University of New Jersey | July 2007 | Phase 1 |
| NCT00442741 | Withdrawn | Solid Tumors | Novartis Pharmaceuticals|Novartis | July 2007 | Phase 1 |
| NCT00496600 | Completed | Refractory Malignancy | University of Medicine and Dentistry of New Jersey|Novartis Pharmaceuticals|National Cancer Institute (NCI)|Rutgers The State University of New Jersey | July 2007 | Phase 1 |
| NCT00442741 | Withdrawn | Solid Tumors | Novartis Pharmaceuticals|Novartis | July 2007 | Phase 1 |
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