Olaparib (AZD2281)

Olaparib (AZD2281, KU0059436) is a selective inhibitor of PARP1 and PARP2 with IC50 of 5 nM and 1 nM, respectively.

Catalog No.S1060
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Olaparib (AZD2281) Chemical Structure
Molecular Weight: 434.46

Validation & Quality Control

Customer Reviews(10)

Quality Control & MSDS

Related Compound Libraries

Olaparib (AZD2281) is available in the following compound libraries:

Products used with Olaparib (AZD2281) in previous publications

Product Information

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  • Research Area
  • Olaparib (AZD2281) Mechanism

Product Description

Biological Activity

Description Olaparib (AZD2281, KU0059436) is a selective inhibitor of PARP1 and PARP2 with IC50 of 5 nM and 1 nM, respectively.
Targets

PARP1

PARP2

IC50

5 nM

1 nM [1]

In vitro Olaparib would act against BRCA1 or BRCA2 mutations. Olaparib is not sensitive to tankyrase-1 (IC50 >1 μM). Olaparib could ablate the PARP-1 activity at concentrations of 30-100 nM in SW620 cells. Olaparib is hypersensitive to BRCA1-deficient cell lines (MDA-MB-463 and HCC1937), compared with BRCA1- and BRCA2-proficient cell lines (Hs578T, MDA-MB-231, and T47D). [1] Olaparib is strongly sensitive to KB2P cells due to suppression of base excision repair by PARP inhibition, which may result in the conversion of single-strand breaks to double-strand breaks during DNA replication, thus activating BRCA2-dependent recombination pathways. [2]
In vivo Combining with temozolomide, Olaparib (10 mg/kg, p.o.) significantly suppresses tumor growth in SW620 xenografts. [1] Olaparib shows great response to Brca1-/-;p53-/- mammary tumors (50 mg/kg i.p. per day), while no responses to HR-deficient Ecad-/-;p53-/- mammary tumors. Olaparib even does not show dose-limiting toxicity in tumor-bearing mice. [3] Olaparib has been used to treat with BRCA mutated tumors, such as ovarian, breast and prostate cancers. Moreover, Olaparib shows selectively inhibition to ATM (Ataxia Telangiectasia Mutated)-deficient tumor cells, which indicates to be a potential agent for treating ATM mutant lymphoid tumors. [4]
Clinical Trials Combining with cediranib, Olaparib is currently in Phase I/II study for treatment of recurrent papillary-serous ovarian, fallopian tube or peritoneal cancer or treatment of recurrent triple-negative breast cancer.
Features Olaparib is one of the first PARP inhibitors.

Protocol(Only for Reference)

Kinase Assay:

[1]

FlashPlate assay (96-well screening assay) To columns 1 through 10, 1 μL of Olaparib (in DMSO) is added, and 1 μL DMSO only is added to the positive (POS) and negative (NEG) control wells (columns 11 and 12, respectively) of a pretreated FlashPlate. PARP-1 is diluted 1:40 in buffer (buffer B: 10% glycerol (v/v), 25 mM HEPES, 12.5 mM MgCl2,50 mM KCl, 1 mM DTT, 0.01% NP-40 (v/v), pH 7.6) and 40 μL added to all 96 wells (final PARP-1 concentration in the assay is ~1 ng/μL). The plate is sealed and shaken at RT for 15 min. Following this, 10 μL of positive reaction mix (0.2 ng/μL of double-stranded oligonucleotide [M3/M4] DNA per well, 5 μM of NAD+ final assay concentration, and 0.075 μCi 3H-NAD+ per well) is added to the appropriate wells (columns 1-11). The negative reaction mix, lacking the DNA oligonucleotide, is added to column 12 (with the mean negative control value used as the background). The plate is resealed and shaken for a further 60 min at RT to allow the reaction to continue. Then, 50 μL of ice-cold acetic acid (30%) is added to each well to stop the reaction, and the plate is sealed and shaken for a further 60 min at RT. Tritiated signal bound to the FlashPlate is then determined in counts per minute (CPM) using the TopCount plate reader.
In vitro isolated enzyme assay PARP-2 activity inhibition uses a variation of the PARP-1 assay in which PARP-2 protein (recombinant) is bound down by a PARP-2 specific antibody in a 96-well white-walled plate. PARP-2 activity is measured following 3H-NAD+ DNA additions. After washing, scintillant is added to measure 3H-incorporated ribosylations. For tankyrase-1, a α-Screen assay is developed in which HIS-tagged recombinant TANK-1 protein is incubated with biotinylated NAD+in a 384-well ProxiPlate assay. Alpha beads are added to bind the HIS and biotin tags to create proximity signal, whereas the inhibition of TANK-1 activity is directly proportional to the loss of this signal.

Cell Assay:

[1]

Cell lines Breast cancer cell lines including SW620 colon, A2780 ovarian, HCC1937, Hs578T, MDA-MB-231, MDA-MB-436, and T47D
Concentrations 1-300 nM
Incubation Time 7-14 days
Method

The cytotoxicity of Olaparib is measured by clonogenic assay. Olaparib is dissolved in DMSO and diluted by culture media before use. The cells are seeded in six well plates and left to attach overnight. Then Olaparib is added at various concentrations and the cells are incubated for 7-14 days. After that the surviving colonies are counted for calculating the IC50.

Animal Study:

[3]

Animal Models Brca1-/-;p53-/- mammary tumors are generated in K14cre;Brca1F/F;p53F/F mice.
Formulation 50 mg/mL stocks in DMSO with 10% 2-hydroxyl-propyl-β-cyclodextrine/PBS
Dosages 50 mg/kg
Administration Administered via i.p. injection at 10 μL/g of body weight
1

References

Chemical Information

Download Olaparib (AZD2281) SDF
Molecular Weight (MW) 434.46
Formula

C24H23FN4O3

CAS No. 763113-22-0, 894104-70-2, 937799-91-2, 1021843-02-6
Synonyms KU-0059436
Solubility (25°C)
  • DMSO 87 mg/mL
  • Water <1 mg/mL
  • Ethanol <1 mg/mL
Storage 2 years -20°CPowder
2 weeks4°Cin DMSO
6 months-80°Cin DMSO
Chemical Name 4-(3-(1-(cyclopropanecarbonyl)piperazine-4-carbonyl)-4-fluorobenzyl)phthalazin-1(2H)-one

Research Area

Customer Reviews (10)


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Rating
Source Nucl Med Commun, 2011, 32(11), 1046-51. Olaparib (AZD2281) purchased from Selleck
Method Cell growth assay
Cell Lines human Burkitt lymphoma cells
Concentrations 500 nmol/L
Incubation Time 0-5 d
Results A volume of 500 nmol/l ABT-888 and AZD-2281 showed a moderate intrinsc effect on cell proliferation on days 3–5 (Fig. a). ABT-888 and AZD-2281 showed a significant ( P < 0.05) reduction in lymphoma cell growth on days 2–5 (Fig. b–d).

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Rating
Source Nucl Med Commun, 2011, 32(11), 1046-51. Olaparib (AZD2281) purchased from Selleck
Method PARP activity assay
Cell Lines Raji lymphocyte tumor cells
Concentrations 500 nmol/L
Incubation Time 24 h
Results

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Rating
Source Nuclear Medicine Communications, 2011, 32, 1046–1051 . Olaparib (AZD2281) purchased from Selleck
Method Laser confocal microscopy/fluorescent H2AX Antibody Staining
Cell Lines Epstein–Barr virus-infected Raji lymphocyte tumor cells
Concentrations 500 nM
Incubation Time 2 h
Results The Fluor-647 anti-H2A.X-phosphorylated (Ser139) antibody stained significantly more double-stranded breaks in cells treated with ABT-888 and AZD-2281 compared with controls at 8 and 12 Gy (P<0.05).

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Rating
Source EMBO Mol Med, 2012, 4, 1087–1096. Olaparib (AZD2281) purchased from Selleck
Method Western Blot
Cell Lines CAL51 cells
Concentrations 0-10 uM
Incubation Time 48 h
Results As expected, H2AX phosphorylation could be detected by Western blotting when cells were exposed to 10 uM olaparib (Fig 5C). Whilst FK866 did not in itself induce H2AX phosphorylation, combining FK866 with olaparib caused detectable gH2AX as measured by Western blotting at concentrations of olaparib as low as 0.01 uM (Fig C).

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Rating
Source HEPATOLOGY, 2012, 55, 1840-1851. Olaparib (AZD2281) purchased from Selleck
Method Western Blot
Cell Lines SNU398/SNU449 cells
Concentrations 3 uM
Incubation Time 48 h
Results The results showed that coadministration of SAHA and olaparib resulted in a synergistic increase in the levels of the cleaved caspase-3 and cleaved PARP in SNU-398 cells as compared with SAHA or olaparib treatment alone. In contrast, the same effect in SNU-449 cells was only modest.

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Rating
Source HEPATOLOGY, 2012, 55, 1840-1851. Olaparib (AZD2281) purchased from Selleck
Method Western Blot
Cell Lines SNU398/SNU449 cells
Concentrations 3 uM
Incubation Time 48 h
Results Cotreatment with SAHA and olaparib synergistically down-regulated the protein levels of checkpoint protein 1 (Chk1), Chk2, and fanconi anemia group D2 protein (FANCD2) in SNU-398 but not SNU-449 Cells.

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Rating
Source HEPATOLOGY, 2012, 55, 1840-1851 . Olaparib (AZD2281) purchased from Selleck
Method Apoptosis assay
Cell Lines SNU398/SNU449 cells
Concentrations 3 uM
Incubation Time 48 h
Results Results showed that coadministration of SAHA and olaparib significantly increased apoptosis (12.8%) in SNU-398 cells compared with treatment with individual agent alone, whereas only a minor effect was observed in SNU-449 cells.

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Rating
Source Dr David Schürmann from University of Basel. Olaparib (AZD2281) purchased from Selleck
Method Kruskal-Wallis and the post-hoc Dunn’s Multiple Comparison tests, immuno-staining
Cell Lines Primary human lung fibroblast cells (MRC-5)
Concentrations 0-100 nM
Incubation Time 2 h
Results In vivo suppression of PAR formation by the PARP inhibitor AZD2281 upon induction of DNA damage Primary human lung fibroblast cells (MRC-5) were pre-treated with the indicated concentration of the PARP inhibitor AZD2281 for two hours. Oxidative DNA damage was induced by 500 µM H2O2 for 10 min and cellular PARP activity was measured by immuno-staining of poly(ADP)-ribose (PAR) (right panels). The in vivo effect of PARP inhibition was compared to cells without DNA damage induction and inhibitor (control) and H2O2-treated cells without inhibitor. Average nuclear PAR staining intensities of more than 50 cells were statistically analysed by Kruskal-Wallis and the post-hoc Dunn’s Multiple Comparison tests (left panel). Asterisks indicate highly significant (p<1%) differences to H2O2-treated cells without PARP inhibitor. Thick horizontal bars mark medians and error bars the interquartile range.

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Rating
Source Dr Xiangbing Meng of University of Iowa. Olaparib (AZD2281) purchased from Selleck
Method WST-1 method
Cell Lines Hec50/Ishikawa/SKOV3/Caov3/PA-1 cell lines
Concentrations 0-12000 nM
Incubation Time 3 d
Results Effect of AZD 2281 on the viability of endometrial cancer cell line Hec50 and Ishikawa and ovarian cancer cell line SKOV3,Caov3 and PA-1 was detected by WST-1 method after 3 days treatment.

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Rating
Source JBC, 2011, 286, 12157–12165. Olaparib (AZD2281) purchased from Selleck
Method Clonogenic Survival Assay
Cell Lines HCT116+3+5 cells, HT29 cells
Concentrations 2 µM
Incubation Time
Results As shown in Fig. A, MSH3-deficient G5 cells were more sensitive to olaparib than the MSH3-restored G5 cell line. These data clearly support the role of MSH3 in DSB repairs in CRC cells. Moreover, the combination of oxaliplatin and olaparib exhibited a synergistic effect in cytotoxicity in the MSH3-deficient G5 cells compared with the parental HCT116+3+5 cells. We also confirmed this effect in two other colon cancer cell lines HT29 (Fig. B) and SW480 (data not shown) in a transient knockdown system using MSH3 siRNA.

Product Citations (21)

  • Double-strand break repair-independent role for BRCA2 in blocking stalled replication fork degradation by MRE11. [Schlacher K, et al. Cell 2011;145(4), 529-542]

    PubMed: 21565612
  • Synthetic lethality of PARP and NAMPT inhibition in triple‐negative breast cancer cells. [Winter GE, et al. Nat Chem Biol 2012;8(11):905-12]

    PubMed: 23023260
  • Topoisomerase I poisoning results in PARP-mediated replication fork reversal. [Ray Chaudhuri A, et al. Nat Struct Mol Biol 2012;19(4):417-23]

    PubMed: 22388737
  • Synergistic inhibition of hepatocellular carcinoma growth by cotargeting chromatin modifying enzymes and poly (ADP-ribose) polymerases. [Zhang JX, et al. Hepatology 2012;55(6):1840-51]

    PubMed: 22223166
  • Nanoparticle-mediated measurement of target-drug binding in cancer cells. [Ullal AV, et al. ACS Nano 2011;5(11), 9216-9224]

    PubMed: 21962084
  • The Forkhead Box M1 protein regulates BRIP1 expression and DNA damage repair in epirubicin treatment. [Monteiro LJ, et al. Oncogene 2012;ahead of print]

    PubMed: 23108394
  • The USP1/UAF1 complex promotes double-strand break repair through homologous recombination. [Murai J, et al. Mol Cell Biol 2011;31(12), 2462-2469]

    PubMed: 21482670
  • Imaging Therapeutic PARP Inhibition In Vivo through Bioorthogonally Developed Companion Imaging Agents. [Reiner T, et al. Neoplasia 2012;14(3):169-77]

    PubMed: 22496617
  • PARP inhibition selectively increases sensitivity to cisplatin in ERCC1-low non-small cell lung cancer cells. [Cheng H, et al. Carcinogenesis 2013;ahead of print]

    PubMed: 23275151
  • MSH3 mediates sensitization of colorectal cancer cells to cisplatin, oxaliplatin, and a poly(ADP-ribose) polymerase inhibitor. [Takahashi M, et al. JBC 2011;286(14), 12157-12165]

    PubMed: 21285347
  • Inhibition of homologous recombination in human cells by targeting RAD51 recombinase. [Huang F, et al. J Med Chem 2012;55(7):3011-20]

    PubMed: 22380680
  • Co-targeting of the PI3K pathway improves the response of BRCA1 deficient breast cancer cells to PARP1 inhibition. [Kimbung S, et al. Cancer Lett 2012;319(2), 232-241]

    PubMed: 22266096
  • Poly (ADP-ribose) polymerase inhibitors combined with external beam and radioimmunotherapy to treat aggressive lymphoma. [King BS, et al. J Biol Chem 2012;287(47):39824-33]

    PubMed: 23038248
  • Induction of Cancerous Stem Cells during Embryonic Stem Cell Differentiation. [Fujimori H, et al. J Biol Chem 2012;287(44):36777-91]

    PubMed: 22961983
  • ATM is dispensable for I-SceI-induced homologous recombination in mouse embryonic stem cells. [Rass E, et al. J Biol Chem 2013;ahead of print]

    PubMed: 23355489
  • A novel role of Krüppel-like factor 8 in DNA repair in breast cancer cells. [Lu H, et al. J Biol Chem 2012;287(52):43720-9]

    PubMed: 23105099
  • Rad51 and BRCA2 - New molecular targets for sensitizing glioma cells to alkylating anticancer Drugs. [Quiros S, et al. Plos ONE 2011;6(11), e27183]

    PubMed: 22073281
  • RECQ1 plays a distinct role in cellular response to oxidative DNA damage. [Sharma S, et al. DNA Repair 2012;11(6), 537-549]

    PubMed: 22542292
  • Garcinol, a histone acetyltransferase inhibitor, radiosensitizes cancer cells by inhibiting non-homologous end joining. [Oike T, et al. Int J Radiat Oncol Biol Phys 2012;84(3):815-21]

    PubMed: 22417805
  • Human monocytes undergo excessive apoptosis following temozolomide activating the ATM/ATR pathway while dendritic cells and macrophages are resistant. [Bauer M, et al. PLoS One 2012;7(6):e39956]

    PubMed: 22768182
  • Radiosensitization effect of poly(ADP-ribose) polymerase inhibition in cells exposed to low and high liner energy transfer radiation. [Hirai T, et al. Cancer Sci 2012;103(6), 1045-50]

    PubMed: 22404155

Tech Support & FAQs

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