In vitro: Tomivosertib (eFT-508) has a half-maximal inhibitory concentration (IC50) of 1-2 nM against both MNK isoforms in enzyme assays and inhibits the kinase through a reversible, ATP-competitive mechanism of action. Treatment of tumor cell lines with eFT508 leads to a dose-dependent reduction in eIF4E phosphorylation at serine 209 (IC50 = 2-16 nM). In a panel of ~50 hematological cancers, eFT508 shows anti-proliferative activity against multiple DLBCL cell lines. Sensitivity to eFT508 in TMD8, OCI-Ly3 and HBL1 DLBCL cell lines is associated with dose-dependent decreases in production of pro-inflammatory cytokines including TNFα, IL-6, IL-10 and CXCL10.
In vivo: Tomivosertib (eFT-508) is well-tolerated and shows efficacy against MyD88-mutant DLBCL models in vivo. Significant anti-tumor activity of eFT508 is observed in the TMD8 and HBL-1 ABC-DLBCL models(subcutaneous human lymphoma xenograft models), both of which harbor activating MyD88 mutations.
| Cell Experiment | |
|---|---|
| Cell lines | TMD8 cells |
| Preparation method | TMD8 cells are treated with the indicated concentrations of eFT508 for 24 h. Cell lysates are subjected to m7-GTP Sepharose pull-down and bound proteins are analyzed by immunoblotting with the indicated antibodies. |
| Concentrations | 0.01, 0.1, 1, 3, 10 μM |
| Incubation time | 24 h |
| Animal Experiment | |
|---|---|
| Animal models | |
| Formulation | |
| Dosages | |
| Administration | |
| Molecular Weight | 340.38 |
| Formula | C17H20N6O2 |
| CAS Number | 1849590-01-7 |
| Form | Solid |
| Solubility (25°C) | DMSO 5 mg/mL |
| Storage |
Powder -20°C 3 years ; 4°C 2 years In solvent -80°C 6 months ; -20°C 1 month |
| Species | Mouse | Rat | Rabbit | Guinea pig | Hamster | Dog |
| Weight (kg) | 0.02 | 0.15 | 1.8 | 0.4 | 0.08 | 10 |
| Body Surface Area (m2) | 0.007 | 0.025 | 0.15 | 0.05 | 0.02 | 0.5 |
| Km factor | 3 | 6 | 12 | 8 | 5 | 20 |
| Animal A (mg/kg) = Animal B (mg/kg) multiplied by | Animal B Km |
| Animal A Km |
For example, to modify the dose of Compound A used for a mouse (20 mg/kg) to a dose based on the BSA for a rat, multiply 20 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 Compound A of 10 mg/kg.
| Related MNK Products |
|---|
| EB1
EB1 is the inhibitor of kinases MNK with IC50s of 0.69 μM (MNK1) and 9.4 μM (MNK2). EB1 selectively inhibits the growth of cancer cells, but not normal cells. EB1 also increases cell apoptosis and suppresses eIF4E phosphorylation. |
| MNK inhibitor 9
MNK inhibitor 9 is a potent and selective inhibitor of MNK1/2 with IC50 values of 0.003 µM and 0.003 µM for MNK1 and MNK2 respectively. MNK inhibitor 9 has good cell permeability. MNK inhibitor 9 can be used in tumor related research. |
| ETC-206 (AUM 001)
ETC-206 is an orally available highly selective small-molecule MNK 1/2 inhibitor with IC50s of 64 nM and 86 nM, respectively. |
| WAY-305025
WAY-305025 is a selective Mnk inhibitor. |
| SLV-2436
SLV-2436 (SEL201-88) is a novel ATP-competitive inhibitor of MNK1 and MNK2 with IC50 of 10.8 nM and 5.4 nM, respectively. |
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