Molecular Weight(MW): 474.55
Danusertib (PHA-739358) is an Aurora kinase inhibitor for Aurora A/B/C with IC50 of 13 nM/79 nM/61 nM in cell-free assays, modestly potent to Abl, TrkA, c-RET and FGFR1, and less potent to Lck, VEGFR2/3, c-Kit, CDK2, etc. Phase 2.
Cited by 12 Publications
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Mice bearing subcutaneous allografts of conditional patched mutant tumor cells were treated twice weekly with vehicle (saline) or 30 mg/kg PHA-739358. (B)Images of tumors. (C) Tumor weights. Each point represents a single tumor, and grey lines represent mean tumor weights, which were significantly different between vehicle and PHA-739358 treated mice (p < 0.05, based on paired two-tailed t-test).
Cancer Res 2013 73(20), 6310-22. Danusertib (PHA-739358) purchased from Selleck.
For MTT assays, cells (2,000 ~ 5,000 cells/well) were subcultured into 96-well plates according to their growth properties. Cell proliferation was assayed at 72 hr after treatment of PHA-739358 by adding 20 μl of 5 mg/ml 3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) solution per 100 μl of growth medium. After incubating for 3-4 h at 37°C, the media were removed and 150 µl/well of MTT solvent (either absolute DMSO or isopropanol containing 4 mM HCl and 0.1% Nonidet-40) was added to dissolve the formazan. The absorbance of each well was measured by ELx808 (BioTek, Winooski, VT) or Wallac Victor2 (Perkin-Elmer Life Sciences, Boston, MA) Microplate Reader. Viable cells are presented as percent of control, vehicle-treated cells.
Dr. Yong-Weon Yi from Georgetown University Medical Center. Danusertib (PHA-739358) purchased from Selleck.
AsPC-1 cells were treated with PHA-739358 (PHA) (3 uM), imatinib (15 uM), or combination of PHA and imatinib for 72 hours and Bcl2 and Bcl-xL expression levels by Western blotting.
Biochem Pharmacol 2012 83(4), 452-61. Danusertib (PHA-739358) purchased from Selleck.
Purity & Quality Control
Choose Selective Aurora Kinase Inhibitors
|Description||Danusertib (PHA-739358) is an Aurora kinase inhibitor for Aurora A/B/C with IC50 of 13 nM/79 nM/61 nM in cell-free assays, modestly potent to Abl, TrkA, c-RET and FGFR1, and less potent to Lck, VEGFR2/3, c-Kit, CDK2, etc. Phase 2.|
Danusertib inhibits the activities of other kinases such as FGFR1, Abl, Ret and Trka, with IC50 of 47 nM, 25 nM, 31 nM and 31 nM, respectively. In a cell assay, after treatment of wild-type and p53-deficient MEFs with Danusertib, the wild-type cells undergo an arrest in mitosis (4N) that is maintained for up to 48 h. The p53-deficient cells on the other hand do not arrest at the 4N DNA stage, but continues with additional rounds of DNA synthesis to become >8N. Treatment with Danusertib results in an increase in p53 protein levels and an associated increase in p21 protein, which is known to be transcriptionally regulated by p53.  Increasing concentrations of Danusertib produces a dose-dependent reduction of cell growth after 48 hours in BCR-ABL-positive (K562, BV173) and BCR-ABL-negative (HL60) cells. 
|In vivo||Administration of 25 mg/kg Danusertib (b.d. i.v.) to HL-60 xenograft rats results in 75% inhibition of tumor growth with complete regression in one animal. Danusertib results in biomarker modulation accompanied by inhibition of tumor growth. This is compatible with an expected mechanism of action of aurora kinase inhibition.  Danusertib significantly inhibits proliferation of K562 cells and virtually suppressed tumor growth during the 10-day treatment period. |
Biochemical kinase Assays:The Km values for ATP and the specific substrate are initially determined, and each assay is then run at optimized ATP (2Km) and substrate (5Km) concentrations. This setting enabled direct comparison of IC50 values of Danusertib across the applied kinase selectivity screening panel for the evaluation of the selectivity profile.
|In vitro||DMSO||95 mg/mL (200.18 mM)|
|In vivo||Add solvents individually and in order:
1% DMSO+30% polyethylene glycol+1% Tween 80
* Please note that Selleck tests the solubility of all compounds in-house, and the actual solubility may differ slightly from published values. This is normal and is due to slight batch-to-batch variations.
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Clinical Trial Information
|NCT Number||Recruitment||Conditions||Sponsor/Collaborators||Start Date||Phases|
|NCT00872300||Terminated||Multiple Myeloma||Nerviano Medical Sciences||October 2008||Phase 2|
|NCT00766324||Completed||Metastatic Hormone Refractory Prostate Cancer||Nerviano Medical Sciences||September 2007||Phase 2|
|NCT00335868||Unknown status||Leukemia||Jonsson Comprehensive Cancer Center|National Cancer Institute (NCI)||March 2007||Phase 2|
Answers to questions you may have can be found in the inhibitor handling instructions. Topics include how to prepare stock solutions, how to store inhibitors, and issues that need special attention for cell-based assays and animal experiments.
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