2. Cell Cycle/DNA Damage
  3. CDK
  4. Ribociclib hydrochloride

Ribociclib hydrochloride  (Synonyms: LEE011 hydrochloride)

Cat. No.: HY-15777A Purity: 99.92%
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Ribociclib hydrochloride (LEE011 hydrochloride) is a highly specific CDK4/6 inhibitor with IC50 values of 10 nM and 39 nM, respectively, and is over 1,000-fold less potent against the cyclin B/CDK1 complex.

For research use only. We do not sell to patients.

Ribociclib hydrochloride Chemical Structure

Ribociclib hydrochloride Chemical Structure

CAS No. : 1211443-80-9

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Solid + Solvent (Highly Recommended)
10 mM * 1 mL in DMSO
ready for reconstitution
 USD 87 In-stock
Solution
10 mM * 1 mL in DMSO USD 87 In-stock
Solid
5 mg USD 79 In-stock
10 mg USD 106 In-stock
50 mg USD 198 In-stock
100 mg USD 330 In-stock
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Based on 60 publication(s) in Google Scholar

Other Forms of Ribociclib hydrochloride:

Ribociclib hydrochloride Related Antibodies

Top Publications Citing Use of Products

55 Publications Citing Use of MCE Ribociclib hydrochloride

WB

    Ribociclib hydrochloride purchased from MedChemExpress. Usage Cited in: Eur J Cancer. 2018 Oct;102:10-22.  [Abstract]

    Head-to-head comparison of the effect of PD 0332991 and Ribociclib on DNA damage response (DDR) signalling in liver cancer cells.

    Ribociclib hydrochloride purchased from MedChemExpress. Usage Cited in: Mol Oncol. 2017 Aug;11(8):1035-1049.  [Abstract]

    Ribociclib induces cell death in Hep3B cells. Cells are exposed to Ribociclib at 25 μM for 72 h.

    Ribociclib hydrochloride purchased from MedChemExpress. Usage Cited in: Mol Oncol. 2017 Aug;11(8):1035-1049.  [Abstract]

    Effects of CDK4/6 inhibitors on AMPK phosphorylation and apoptosis-related signals. After 24 h of drug treatment, the cells are subjected to western blot analysis. AMPK phosphorylation level is quantified by the ratio of band intensities of phospho-AMPKα vs. AMPKα.

    Ribociclib hydrochloride purchased from MedChemExpress. Usage Cited in: Clin Cancer Res. 2015 Nov 1;21(21):4947-59.  [Abstract]

    Retinoblastoma (RB) phosphorylation and FOXM1, another CDK4 target, are reduced in cells treated with LEE011.

    Ribociclib hydrochloride purchased from MedChemExpress. Usage Cited in: Clin Cancer Res. 2015 Nov 1;21(21):4947-59.  [Abstract]

    Retinoblastoma (RB) phosphorylation and FOXM1, another CDK4 target, are reduced in cells treated with LEE011.

    View All CDK Isoform Specific Products:

    View All Isoforms
    CDK1 CDK2 CDK3 CDK4 CDK5 CDK6 CDK7 CDK8 CDK9 CDK11 CDK12 CDK13 CDK14 CDK16 CDK19 CDC CLK Pho85

    • Biological Activity

    • Protocol

    • Purity & Documentation

    • References

    • Customer Review

    Description

    Ribociclib hydrochloride (LEE011 hydrochloride) is a highly specific CDK4/6 inhibitor with IC50 values of 10 nM and 39 nM, respectively, and is over 1,000-fold less potent against the cyclin B/CDK1 complex.

    IC50 & Target[1]

    CDK4

    10 nM (IC50)

    CDK6

    39 nM (IC50)

    In Vitro

    Treating a panel of 17 neuroblastoma cell lines with Ribociclib (LEE011) across a four-log dose range (10 to 10,000 nM). Treatment with Ribociclib significantly inhibits substrate adherent growth relative to the control in 12 of the 17 neuroblastoma cell lines examined (mean IC50=306±68 nM, considering sensitive lines only, where sensitivity is defined as an IC50 of less than 1 μM. Ribociclib treatment of two neuroblastoma cell lines (BE2C and IMR5) with demonstrated sensitivity to CDK4/6 inhibition results in a dose-dependent accumulation of cells in the G0/G1 phase of the cell cycle. This G0/G1 arrest becomes significant at Ribociclib concentrations of 100 nM (p=0.007) and 250 nM (p=0.01), respectively[2].

    MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.

    Ribociclib hydrochloride Related Antibodies
    In Vivo

    CB17 immunodeficient mice bearing BE2C, NB-1643 (MYCN amplified, sensitive in vitro), or EBC1 (non-amplified, resistant in vitro) xenografts are treated once daily for 21 days with Ribociclib (LEE011; 200 mg/kg) or with a vehicle control. This dosing strategy is well tolerated, as no weight loss or other signs of toxicity are observed in any of the xenograft models. Tumor growth is significantly delayed throughout the 21 days of treatment in mice harboring the BE2C or 1643 xenografts (both, p<0.0001), although growth resumed post-treatment[2].

    MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
    Clinical Trial
    Molecular Weight

    471.00

    Formula

    C23H31ClN8O
    CAS No.
    Appearance

    Solid

    Color

    Off-white to yellow

    SMILES

    O=C(N(C)C)C(N1C2CCCC2)=CC(C1=N3)=CN=C3NC(N=C4)=CC=C4N5CCNCC5.Cl
    Shipping

    Room temperature in continental US; may vary elsewhere.
    Storage

    4°C, sealed storage, away from moisture

    *In solvent : -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture)

    Solvent & Solubility
    In Vitro: 

    H2O : 10 mg/mL (21.23 mM; Need ultrasonic)

    DMSO : 7.69 mg/mL (16.33 mM; Need ultrasonic; Hygroscopic DMSO has a significant impact on the solubility of product, please use newly opened DMSO)

    Preparing
    Stock Solutions
    Concentration Solvent Mass 1 mg 5 mg 10 mg
    1 mM 2.1231 mL 10.6157 mL 21.2314 mL
    5 mM 0.4246 mL 2.1231 mL 4.2463 mL
    View the Complete Stock Solution Preparation Table

    * Please refer to the solubility information to select the appropriate solvent. Once prepared, please aliquot and store the solution to prevent product inactivation from repeated freeze-thaw cycles.
    Storage method and period of stock solution: -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture). When stored at -80°C, please use it within 6 months. When stored at -20°C, please use it within 1 month.

    * Note: If you choose water as the stock solution, please dilute it to the working solution, then filter and sterilize it with a 0.22 μm filter before use.

    • Molarity Calculator

    • Dilution Calculator

    Mass (g) = Concentration (mol/L) × Volume (L) × Molecular Weight (g/mol)

    Mass
    =
    Concentration
    ×
    Volume
    ×
    Molecular Weight *

    Concentration (start) × Volume (start) = Concentration (final) × Volume (final)

    This equation is commonly abbreviated as: C1V1 = C2V2

    Concentration (start)

    C1

    ×
    Volume (start)

    V1

    =
    Concentration (final)

    C2

    ×
    Volume (final)

    V2

    In Vivo:

    Select the appropriate dissolution method based on your experimental animal and administration route.

    For the following dissolution methods, please ensure to first prepare a clear stock solution using an In Vitro approach and then sequentially add co-solvents:
    To ensure reliable experimental results, the clarified stock solution can be appropriately stored based on storage conditions. As for the working solution for in vivo experiments, it is recommended to prepare freshly and use it on the same day.
    The percentages shown for the solvents indicate their volumetric ratio in the final prepared solution. If precipitation or phase separation occurs during preparation, heat and/or sonication can be used to aid dissolution.

    • Protocol 1

      Add each solvent one by one:  10% DMSO    40% PEG300    5% Tween-80    45% Saline

      Solubility: ≥ 0.77 mg/mL (1.63 mM); Clear solution

      This protocol yields a clear solution of ≥ 0.77 mg/mL (saturation unknown).

      Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (7.7 mg/mL) to 400 μL PEG300, and mix evenly; then add 50 μL Tween-80 and mix evenly; then add 450 μL Saline to adjust the volume to 1 mL.

      Preparation of Saline: Dissolve 0.9 g sodium chloride in ddH₂O and dilute to 100 mL to obtain a clear Saline solution.
    • Protocol 2

      Add each solvent one by one:  10% DMSO    90% (20% SBE-β-CD in Saline)

      Solubility: ≥ 0.77 mg/mL (1.63 mM); Clear solution

      This protocol yields a clear solution of ≥ 0.77 mg/mL (saturation unknown).

      Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (7.7 mg/mL) to 900 μL 20% SBE-β-CD in Saline, and mix evenly.

      Preparation of 20% SBE-β-CD in Saline (4°C, storage for one week): 2 g SBE-β-CD powder is dissolved in 10 mL Saline, completely dissolve until clear.

    For the following dissolution methods, please prepare the working solution directly. It is recommended to prepare fresh solutions and use them promptly within a short period of time.
    The percentages shown for the solvents indicate their volumetric ratio in the final prepared solution. If precipitation or phase separation occurs during preparation, heat and/or sonication can be used to aid dissolution.

    • Protocol 1

      Add each solvent one by one:  PBS

      Solubility: 1 mg/mL (2.12 mM); Clear solution; Need ultrasonic and warming and heat to 60°C

    In Vivo Dissolution Calculator
    Please enter the basic information of animal experiments:

    Dosage

    mg/kg

    Animal weight
    (per animal)

    g

    Dosing volume
    (per animal)

    μL

    Number of animals

    Recommended: Prepare an additional quantity of animals to account for potential losses during experiments.
    Please enter your animal formula composition:
    %
    DMSO +
    % 
    +
    %
    Tween-80 +
    %
    Saline
    Recommended: Keep the proportion of DMSO in working solution below 2% if your animal is weak.
    The co-solvents required include: DMSO, . All of co-solvents are available by MedChemExpress (MCE). , Tween 80. All of co-solvents are available by MedChemExpress (MCE).
    Calculation results:
    Working solution concentration: mg/mL
    Method for preparing stock solution: mg drug dissolved in μL  DMSO (Stock solution concentration: mg/mL).

    *In solvent : -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture)

    The concentration of the stock solution you require exceeds the measured solubility. The following solution is for reference only. If necessary, please contact MedChemExpress (MCE).
    Method for preparing in vivo working solution for animal experiments: Take μL DMSO stock solution, add μL . μL , mix evenly, next add μL Tween 80, mix evenly, then add μL Saline.
     If the continuous dosing period exceeds half a month, please choose this protocol carefully.
    Please ensure that the stock solution in the first step is dissolved to a clear state, and add co-solvents in sequence. You can use ultrasonic heating (ultrasonic cleaner, recommended frequency 20-40 kHz), vortexing, etc. to assist dissolution.
    Purity & Documentation

    Purity: 99.95%

    SDS (788 KB)

    COA (248 KB) LCMS (135 KB)

    Handling Instructions (2659 KB)
    References
    Cell Assay
    [2]

    Cells are grown for 24 hours in 35 mm plates, treated with 500 nM Ribociclib for 6 days, and then fixed and stained overnight. Cells are then imaged for SA-β-gal using an Axio Observer D.1 phase contrast microscope. The percentage of SA-β-gal positive cells is determined by counting the number of positive cells present in three separate microscope frames, and then normalizing to the control. To assess apoptotic activity, cells are plated in triplicate in 96 well plates, treated with Ribociclib, and assayed for caspase 3/7 activation 16 hours after treatment with Caspase-Glo 3/7. Cells treated with SN-38 are used as a positive control[2].

    MCE has not independently confirmed the accuracy of these methods. They are for reference only.
    Animal Administration
    [2]

    Mice[2]
    The BE2C, NB-1643, or EBC1 cell line-derived xenografts are implanted subcutaneously into the right flank of CB17 SCID-/- mice. Animals bearing engrafted tumors of 200-600 mm3 are then randomized to oral treatment with 200 mg/kg Ribociclib in 0.5 % methylcellulose (n=10) or vehicle (n=10) daily for a total of 21 days. Tumor burden is determined periodically throughout treatment according to the formula (π/6)×d2, where d represents the mean tumor diameter obtained by caliper measurement.

    MCE has not independently confirmed the accuracy of these methods. They are for reference only.
    References

    Complete Stock Solution Preparation Table

    * Please refer to the solubility information to select the appropriate solvent. Once prepared, please aliquot and store the solution to prevent product inactivation from repeated freeze-thaw cycles.
    Storage method and period of stock solution: -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture). When stored at -80°C, please use it within 6 months. When stored at -20°C, please use it within 1 month.

    Optional Solvent Concentration Solvent Mass 1 mg 5 mg 10 mg 25 mg
    DMSO / H2O 1 mM 2.1231 mL 10.6157 mL 21.2314 mL 53.0786 mL
    5 mM 0.4246 mL 2.1231 mL 4.2463 mL 10.6157 mL
    10 mM 0.2123 mL 1.0616 mL 2.1231 mL 5.3079 mL
    15 mM 0.1415 mL 0.7077 mL 1.4154 mL 3.5386 mL
    H2O 20 mM 0.1062 mL 0.5308 mL 1.0616 mL 2.6539 mL

    * Note: If you choose water as the stock solution, please dilute it to the working solution, then filter and sterilize it with a 0.22 μm filter before use.

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    Ribociclib hydrochloride Related Classifications

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    • Do most proteins show cross-species activity?

      Species cross-reactivity must be investigated individually for each product. Many human cytokines will produce a nice response in mouse cell lines, and many mouse proteins will show activity on human cells. Other proteins may have a lower specific activity when used in the opposite species.

    Keywords:

    Ribociclib1211443-80-9LEE011LEE 011LEE-011CDKCyclin dependent kinaseInhibitorinhibitorinhibit

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