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.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. 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. 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.
|Body Surface Area (m2)||0.007||0.025||0.15||0.05||0.02||0.5|
|Animal A (mg/kg) = Animal B (mg/kg) multiplied by||Animal B Km|
|Animal A Km|
For example, to modify the dose of resveratrol used for a mouse (22.4 mg/kg) to a dose based on the BSA for a rat, multiply 22.4 mg/kg by the Km factor for a mouse and then divide by the Km factor for a rat. This calculation results in a rat equivalent dose for resveratrol of 11.2 mg/kg.
|Solubility||DMSO 102 mg/mL;Ethanol 102 mg/mL|
Synthesis and biological activity of novel epothilone aziridines.
Regueiro-Ren A, et al. Org Lett. 2001 Aug 23;3(17):2693-6. PMID: 11506611.
|Related Microtubule Products|
Crolibulin (also known as EPC2407 and crinobulin) is a small molecule tubulin polymerization inhibitor with potential antineoplastic activity.
Maytansinol, also known as Ansamitocin P-0, is a potent microtubule depolymerizing agent.
Epothilone D is a potent microtubule stabilizer.
|Estramustine phosphate sodium
Estramustine phosphate sodium is an antimicrotubule chemotherapy agent; arrests prostate cancer cells in the G2/M phase of the cell cycle.
Docetaxel trihydrate(Taxotere trihydrate), an analog of taxol, is an inhibitor of depolymerisation of microtubules through binding to stabilized microtubules.
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