loadingProduct Data?SheetNiraparibCat. No.:CAS No.:分?式:分?量:作?靶点:作?通路:储存?式:HY-106191038915-60-4C??H??N?O320.39PARP; ApoptosisCell Cycle/DNA Damage; Epigenetics; ApoptosisPowderIn solvent-20°C4°C-80°C-20°C3 years2 years6 months1 monthInhibitors?Agonists?Screening Libraries溶解性数据体外实验DMSO : 25 mg/mL (78.03 mM; Need ultrasonic)Mass1 mg5 mg10 mgSolventConcentration制备储备液1 mM5 mM10 mM3.1212 mL0.6242 mL0.3121 mL15.6060 mL3.1212 mL1.5606 mL31.2120 mL6.2424 mL3.1212 mL请根据产品在不同溶剂中的溶解度选择合适的溶剂配制储备液；?旦配成溶液，请分装保存，避免反复冻融造成的产品失效。储备液的保存?式和期限：-80°C, 6 months; -20°C, 1 month。-80°C 储存时，请在 6 个?内使?，-20°C 储存时，请在 1 个?内使?。体内实验请根据您的实验动物和给药?式选择适当的溶解?案。以下溶解?案都请先按照 In Vitro ?式配制澄清的储备液，再依次添加助溶剂： 为保证实验结果的可靠性，澄清的储备液可以根据储存条件，适当保存；体内实验的?作液，建议您现?现配，当天使?； 以下溶剂前显?的百分?是指该溶剂在您配制终溶液中的体积占?；如在配制过程中出现沉淀、析出现象，可以通过加热和/或超声的?式助溶1. 请依序添加每种溶剂：?10% DMSO ?? 40% PEG300 ?? 5% Tween-80 ?? 45% salineSolubility: ≥ 2.08 mg/mL (6.49 mM); Clear solution此?案可获得 ≥ 2.08 mg/mL (6.49 mM，饱和度未知) 的澄清溶液。 以 1 mL ?作液为例，取 100 μL 20.8 mg/mL 的澄清 DMSO 储备液加到 400 μL PEG300 中，混合均匀；向上述体系中加? 50 μL Tween-80，混合均匀；然后继续加? 450 μL ?理盐?定容? 1 mL。2. 请依序添加每种溶剂：?10% DMSO ?? 90% (20% SBE-β-CD in saline)Solubility: ≥ 2.08 mg/mL (6.49 mM); Clear solution此?案可获得 ≥ 2.08 mg/mL (6.49 mM，饱和度未知) 的澄清溶液。 Page 1 of 2 www.MedChemExpress.cn
以 1 mL ?作液为例，取 100 μL 20.8 mg/mL 的澄清 DMSO 储备液加到 900 μL 20% 的 SBE-β-CD ?理盐??溶液中，混合均匀。
3. 请依序添加每种溶剂：?10% DMSO ?? 90% corn oilSolubility: ≥ 2.08 mg/mL (6.49 mM); Clear solution
此?案可获得 ≥ 2.08 mg/mL (6.49 mM，饱和度未知) 的澄清溶液，此?案不适?于实验周期在半个?以上的实验。 以 1 mL ?作液为例，取 100 μL 20.8 mg/mL 的澄清 DMSO 储备液加到 900 μL ??油中，混合均匀。
BIOLOGICAL ACTIVITY
?物活性
Niraparib (MK-4827) 是?效的，具有?物?服利?度的 PARP1 和 PARP2 抑制剂，IC50 分别为 3.8 nM 和 2.1 nM。Niraparib 抑制 DNA 损伤修复，诱导凋亡 (apoptosis) 并具有抗肿瘤活性。
IC?? & Target
PARP-22.1 nM (IC50)PARP-31300 nM (IC50)
体外研究
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 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].
体内研究
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].
PARP-13.8 nM (IC50)
V-PARP330 nM (IC50)
TANK-1570 nM (IC50)
PROTOCOL
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
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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 Niraparib (MK-4827) is initiated. Niraparib (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 Niraparib 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.
客户使?本产品发表的科研?献
????Cancer Discov. 2017 Sep;7(9):984-998.????J Clin Invest. 2019 Mar 1;129(3):1211-1228.????Clin Cancer Res. 2017 Feb 15;23(4):1001-1011.????EBioMedicine.?2018 Dec.
????J Mol Med (Berl). 2019 Aug;97(8):1183-1193.
See more customer validations on www.MedChemExpress.cnREFERENCES
[1].?Jones P, et al. Discovery of 2-{4-[(3S)-piperidin-3-yl]phenyl}-2H-indazole-7-carboxamide (MK-4827): a novel oral poly(ADP-ribose)polymerase (PARP) inhibitor efficacious in BRCA-1 and -2 mutant tumors. J Med Chem. 2009 Nov 26;52(22):7170-85.
[2].?Bridges KA, et al. Niraparib (MK-4827), a novel poly(ADP-Ribose) polymerase inhibitor, radiosensitizes human lung and breast cancer cells. Oncotarget. 2014 Jul 15;5(13):5076-86.
[3].?Wang L, et al. MK-4827, a PARP-1/-2 inhibitor, strongly enhances response of human lung and breast cancer xenografts to radiation. Invest New Drugs. 2012 Dec;30(6):2113-20.
[4].?Mirza MR, et al. Niraparib Maintenance Therapy in Platinum-Sensitive, Recurrent Ovarian Cancer. N Engl J Med. 2016 Dec 1;375(22):2154-2164.
McePdfHeightCaution: Product has not been fully validated for medical applications. For research use only.
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