Size : 5mg
Synonyms: LEE011
| Description | Ribociclib (LEE011) is an orally available, and highly specific CDK4/6 inhibitor (IC50:10/39 nM). |
| Targets & IC50 | Hep 3B2 cells:> 10 μM, HeLa cells:> 10 μM, MDA-MB-231 cells:> 10 μM, A549 cells:> 10 μM, CCRF-CEM cells:> 10 μM, B16 F10 cells:> 10 μM, BXPC-3 cells:68.37 μM, CDK6:39 nM, MCF-7 cells:> 10 μM, HCC827 cells:> 10 μM, 4T1 cells:> 10 μM, CDK4:10 nM, A375 cells:> 10 μM, HepG2 cells:> 10 μM, Jurkat cells:> 10 μM |
| In vitro | LEE011 (200 mg/kg/day, p.o.) significantly delayed the growth of BE2C or 1643 cells in mice without causing weight loss or other toxic symptoms. |
| In vivo | LEE011 inhibits the growth of neuroblastoma cells, a process regulated by G1 cell cycle arrest and cellular senescence. It demonstrates significant growth suppression in 12 out of 17 neuroblastoma types evaluated, with an average IC50 of 307 nM. |
| Synonyms | LEE011 |
| Kinase Assay | Enzyme assays are performed using a homogeneous time-resolved fluorescence assay with recombinant epitope tagged kinase domains (JAK1, 837-1142; JAK2, 828-1132; JAK3, 718-1124; Tyk2, 873-1187) or full-length enzyme (cMET and Chk2) and peptide substrate. Each enzyme reaction is performed with or without test compound (11-point dilution), JAK, cMET, or Chk2 enzyme, 500 nM (100 nM for Chk2) peptide, ATP (at the Km specific for each kinase or 1 mM), and 2.0% DMSO in assay buffer. The calculated IC50 value is the compound concentration required for inhibition of 50% of the fluorescent signal. Additional kinase assays are performed at Cerep using standard conditions at 200 nM. Enzymes tested included: Abl, Akt1, AurA, AurB, CDC2, CDK2, CDK4, CHK2, c-kit, EGFR, EphB4, ERK1, ERK2, FLT-1, HER2, IGF1R, IKKα, IKKβ, JNK1, Lck, MEK1, p38α, p70S6K, PKA, PKCα, Src, and ZAP70[1]. |
| Cell Research | A panel of neuroblastoma cell lines, selected based upon prior demonstration of substrate adherent growth, is plated in triplicate on the Xcelligence Real-Time Cell Electronic Sensing system and treated 24 hours later with a four-log dose range of inhibitor or with a dimethyl sulfoxide (DMSO) control. Cell indexes are monitored continuously for ~100 hours, and IC50 values are determined as follows: growth curves are generated by plotting the cell index as a function of time and are normalized to the cell index at the time of treatment for a baseline cell index of 1. The area under the normalized growth curve from the time of treatment to 96 hours posttreatment is then calculated using a baseline area of 1 (the cell index at the time of treatment). Areas are normalized to the DMSO control, and the resulting data are analyzed using a nonlinear log inhibitor versus normalized response function. All experiments are repeated at least once. (Only for Reference) |
| Molecular Weight | 434.54 |
| Formula | C23H30N8O |
| Cas No. | 1211441-98-3 |
| Smiles | C(N(C)C)(=O)C=1N(C=2C(C1)=CN=C(NC3=CC=C(C=N3)N4CCNCC4)N2)C5CCCC5 |
| Relative Density. | 1.39 g/cm3 (Predicted) |
| Storage | Store under nitrogen Powder: -20°C for 3 years | In solvent: -80°C for 1 year Shipping with blue ice/Shipping at ambient temperature. | |||||||||||||||||||||||||
| Solubility Information | DMSO: 9 mg/mL (20.71 mM), Sonication is recommended.  H2O: < 1 mg/mL (insoluble or slightly soluble) Ethanol: < 1 mg/mL (insoluble or slightly soluble) | |||||||||||||||||||||||||
| In Vivo Formulation | 10% DMSO+40% PEG300+5% Tween 80+45% Saline: 5 mg/mL (11.51 mM), Suspension. Please add the solvents sequentially, clarifying the solution as much as possible before adding the next one. Dissolve by heating and/or sonication if necessary. Working solution is recommended to be prepared and used immediately. The formulation provided above is for reference purposes only. In vivo formulations may vary and should be modified based on specific experimental conditions. | |||||||||||||||||||||||||
Solution Preparation Table | ||||||||||||||||||||||||||
DMSO
Note : The dilution table applies only to solid products. For liquid products, please calculate the stock solution based on the stated concentration and/or density. | ||||||||||||||||||||||||||
For example, if the intended dosage is 10 mg/kg for animals weighing 20 g , with a dosing volume of 100 μL per animal, and a total of 10 animals are to be administered, using a formulation of 
10% DMSO+ 40% PEG300+ 5% Tween 80+ 45% Saline/PBS/ddH2O , the resulting working solution concentration would be 2 mg/mL.Dissolve 2 mg of the compound in 100 μL DMSO to obtain a stock solution at a concentration of 20 mg/mL . If the required concentration exceeds the compound's known solubility, please contact us for technical support before proceeding.
1) Add 100 μL of the DMSO stock solution to 400 µL PEG300 and mix thoroughly until the solution becomes clear.
2) Add 50 µL Tween 80 and mix well until fully clarified.
3) Add 450 µL Saline,PBS or ddH2O and mix thoroughly until a homogeneous solution is obtained.
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