1. Cell Cycle/DNA Damage Epigenetics Apoptosis
  2. PARP Apoptosis
  3. Niraparib tosylate

Niraparib tosylate  (Synonyms: MK-4827 tosylate)

Cat. No.: HY-10619B Purity: 99.99%
COA Handling Instructions

Niraparib tosylate (MK-4827 tosylate) est un inhibiteur de PARP1 et de PARP2 qui est hautement puissant et oralement biodisponible avec un IC50 de 3,8 et 2,1 nM, respectivement. Niraparib tosylate entraîne une inhibition de la réparation des dommages à l’ADN, active l'apoptose et présente une activité antitumorale.

Niraparib tosylate (MK-4827 tosylate) is a highly potent and orally bioavailable PARP1 and PARP2 inhibitor with an IC50 of 3.8 and 2.1 nM, respectively. Niraparib tosylate leads to inhibition of repair of DNA damage, activates apoptosis and shows anti-tumor activity.

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

Niraparib tosylate Chemical Structure

Niraparib tosylate Chemical Structure

CAS No. : 1038915-73-9

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Solid + Solvent
10 mM * 1 mL in DMSO
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10 mM * 1 mL in DMSO USD 85 In-stock
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10 mg USD 110 In-stock
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Customer Review

Based on 55 publication(s) in Google Scholar

Other Forms of Niraparib tosylate:

Top Publications Citing Use of Products

52 Publications Citing Use of MCE Niraparib tosylate

Proliferation Assay
WB

    Niraparib tosylate purchased from MedChemExpress. Usage Cited in: Appl Microbiol Biotechnol. 2019 Dec;103(23-24):9557-9568.  [Abstract]

    CDK4 is evaluated via western blot analysis in different cell lines with the treatment of Niraparib in different concentrations and times.

    Niraparib tosylate purchased from MedChemExpress. Usage Cited in: Appl Microbiol Biotechnol. 2019 Dec;103(23-24):9557-9568.  [Abstract]

    Cyclin D is evaluated via western blot analysis in different cell lines with the treatment of Niraparib in different concentrations and times.

    Niraparib tosylate purchased from MedChemExpress. Usage Cited in: Cancer Chemother Pharmacol. 2017 Oct;80(4):861-867.  [Abstract]

    PARP1 inhibition is lethal to MPM cells. Colony formation assays of clonal cell survival with continuous Niraparib or AZD2281.
    • Biological Activity

    • Protocol

    • Purity & Documentation

    • References

    • Customer Review

    Description

    Niraparib tosylate (MK-4827 tosylate) is a highly potent and orally bioavailable PARP1 and PARP2 inhibitor with an IC50 of 3.8 and 2.1 nM, respectively. Niraparib tosylate leads to inhibition of repair of DNA damage, activates apoptosis and shows anti-tumor activity[1][2][3].

    IC50 & Target[1]

    PARP-2

    2.1 nM (IC50)

    PARP-1

    3.8 nM (IC50)

    V-PARP

    330 nM (IC50)

    TANK-1

    570 nM (IC50)

    PARP-3

    1300 nM (IC50)

    In Vitro

    Niraparib (MK-4827) inhibits PARP activity with EC50=4 nM and EC90=45 nM in a whole cell assay. MK-4827 inhibits proliferation of cancer cells with mutant BRCA-1 and BRCA-2 with CC50 in the 10 100 nM range. MK-4827 displays excellent PARP 1 and 2 inhibition with IC50=3.8 and 2.1 nM, respectively, and in a whole cell assay[1].
    To validate that Niraparib (MK-4827) inhibits PARP in these cell lines, A549 and H1299 cells are treated with 1 μM Niraparib (MK-4827) for various times and measured PARP enzymatic activity using a chemiluminescent assay. The results show that Niraparib (MK-4827) inhibits PARP within 15 minutes of treatment reaching about 85% inhibition in the A549 cells at 1 h and about 55% inhibition at 1 h for the H1299 cells[2].

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

    In Vivo

    Niraparib (MK-4827) is well tolerated and demonstrates efficacy as a single agent in a xenograft model of BRCA-1 deficient cancer. Niraparib (MK-4827) is well tolerated in vivo and demonstrates efficacy as a single agent in a xenograft model of BRCA-1 deficient cancer. Niraparib (MK-4827) is characterized by acceptable pharmacokinetics in rats with plasma clearance of 28 (mL/min)/kg, very high volume of distribution (Vdss=6.9 L/kg), long terminal half-life (t1/2=3.4 h), and excellent bioavailability, F=65%[1].
    Niraparib (MK-4827) enhances radiation response of p53 mutant Calu-6 tumor in both cases, with the single daily dose of 50 mg/kg being more effective than 25 mg/kg given twice daily[3].

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

    Clinical Trial
    Molecular Weight

    492.59

    Formula

    C26H28N4O4S

    CAS No.
    Appearance

    Solid

    Color

    White to yellow

    SMILES

    NC(C1=CC=CC2=CN(C3=CC=C([C@H]4CNCCC4)C=C3)N=C21)=O.O=S(C5=CC=C(C)C=C5)(O)=O

    Shipping

    Room temperature in continental US; may vary elsewhere.

    Storage

    4°C, sealed storage, away from moisture

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

    Solvent & Solubility
    In Vitro: 

    DMSO : 100 mg/mL (203.01 mM; ultrasonic and warming and heat to 60°C; Hygroscopic DMSO has a significant impact on the solubility of product, please use newly opened DMSO)

    H2O : 1 mg/mL (2.03 mM; heat to 50°C)

    Preparing
    Stock Solutions
    Concentration Solvent Mass 1 mg 5 mg 10 mg
    1 mM 2.0301 mL 10.1504 mL 20.3009 mL
    5 mM 0.4060 mL 2.0301 mL 4.0602 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, 1 years; -20°C, 6 months (sealed storage, away from moisture). When stored at -80°C, please use it within 1 years. When stored at -20°C, please use it within 6 months.

    * 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
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    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

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    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:  5% DMSO    40% PEG300    5% Tween-80    50% Saline

      Solubility: ≥ 2.5 mg/mL (5.08 mM); Clear solution

    • Protocol 2

      Add each solvent one by one:  5% DMSO    95% (20% SBE-β-CD in Saline)

      Solubility: ≥ 2.5 mg/mL (5.08 mM); Clear solution

    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, 1 years; -20°C, 6 months (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: 99.99%

    References
    Cell Assay
    [2]

    The inhibition of PARP is analyzed in A549 and H1299 cells using the HT Universal Chemiluminescent PARP Assay Kit. Briefly, cells are treated with DMSO or 1 μM Niraparib (MK-4827) for 15, 30, 60, or 120 minutes, trypsinized, and transferred to a pre-chilled tube. The cells are washed twice with ice cold PBS and resuspended in cold PARP extraction buffer. The cell suspensions are incubated on ice for 30 minutes with periodic vortexing to disrupt the cell membrane. The suspensions are centrifuged and the supernatant transferred to a pre-chilled tube on ice. The histone coated wells of the 96-well plate are rehydrated with 1X PARP buffer and incubated at room temperature for 30 minutes. The PARP buffer is removed and 20 μg of protein as determined by the Bio-Rad Protein Assay is added to each well followed by diluted PARP-HSA enzyme and 1X PARP buffer. The strip wells are then incubated at room temperature for 60 minutes, washed twice with PBS containing 0.1% Triton X-100, and then washed with PBS. Diluted Strep-HRP is added to the strip wells and incubated for 60 minutes at room temperature. The wells are washed again as before. Equal volumes of PeroxyGlow A and B are combined and added to the wells and chemiluminescent readings are obtained immediately using a plate-reader[2].

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

    Animal Administration
    [3]

    Mice[3]
    Female nude mice (Ncr Nu/Nu) are randomly assigned to treatment groups consisting of 5 to 8 mice each when tumors grew to 6.0 mm in diameter at which time treatment with MK-4827 is initiated. MK-4827 is given at a dose of 25 mg/kg twice daily or 50 mg/kg once daily for either 21 days or is discontinued at 9 days from the time tumors reached 8 mm in diameter. Fractionated local tumor irradiation (XRT) is given when tumors reach 8.0 mm in diameter (7.7-8.2 mm). Radiation (2 Gy per fraction) is delivered to the tumor-bearing leg of mice once daily for 14 consecutive days or twice daily for 7 consecutive days using a small-animal irradiator consisting of two parallel-opposed 137Cs sources, at a dose rate of 5 Gy/min. During irradiation un-anesthetized mice are mechanically immobilized in a jig so that the tumor is centered within a 3.0 cm diameter radiation field and the animal’s body shielded from radiation exposure. On the day when both MK-4827 and radiation are given, drug is administered 1 h before the first radiation dose of the day.

    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, 1 years; -20°C, 6 months (sealed storage, away from moisture). When stored at -80°C, please use it within 1 years. When stored at -20°C, please use it within 6 months.

    Optional Solvent Concentration Solvent Mass 1 mg 5 mg 10 mg 25 mg
    H2O / DMSO 1 mM 2.0301 mL 10.1504 mL 20.3009 mL 50.7521 mL
    DMSO 5 mM 0.4060 mL 2.0301 mL 4.0602 mL 10.1504 mL
    10 mM 0.2030 mL 1.0150 mL 2.0301 mL 5.0752 mL
    15 mM 0.1353 mL 0.6767 mL 1.3534 mL 3.3835 mL
    20 mM 0.1015 mL 0.5075 mL 1.0150 mL 2.5376 mL
    25 mM 0.0812 mL 0.4060 mL 0.8120 mL 2.0301 mL
    30 mM 0.0677 mL 0.3383 mL 0.6767 mL 1.6917 mL
    40 mM 0.0508 mL 0.2538 mL 0.5075 mL 1.2688 mL
    50 mM 0.0406 mL 0.2030 mL 0.4060 mL 1.0150 mL
    60 mM 0.0338 mL 0.1692 mL 0.3383 mL 0.8459 mL
    80 mM 0.0254 mL 0.1269 mL 0.2538 mL 0.6344 mL
    100 mM 0.0203 mL 0.1015 mL 0.2030 mL 0.5075 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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      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.

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