Molecular Weight(MW): 476.86
MLN8054 is a potent and selective inhibitor of Aurora A with IC50 of 4 nM in Sf9 insect cell. It is more than 40-fold selective for Aurora A than Aurora B. Phase 1.
Cited by 10 Publications
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Aurora A and Aurora B activities do not influence the timing of CENP-A assembly. (A) A nascent pool of CENP-A-SNAP was pulse labeled in randomly cycling HeLa cells during which either Aurora A or Aurora B activity was inhibited by treatment with 1µM of MLN8054 or 2µM of ZM447439, respectively. Cells were fixed and counterstained for cyclin B1, CENP-T and with DAPI to indicate G2 status, centromeres and DNA, respectively. Effective kinase inhibition was evident from chromosome segregation defects in mitosis after Aurora A inhibition [indicated by an asterisk and (Hoar et al., 2007)] prior to subsequent CENP-A assembly in G1 or after Aurora B inhibition resulting in cytokinesis failure and multinucleated cells [asterisk and (Ditchfield et al., 2003)]. Representative images of cells in G1 (low cyclin B) and G2 phase (high cyclin B) are shown. (B) Experiment as in A except that cells were treated for one hour with either Roscovitine alone or in combination with MLN8054 or ZM447439 prior to fixation. Percentage of cells assembling CENP-A-SNAP is indicated [either percent of total cells (in top panel, G1 phase) or percent of cyclin B1 positive cells (bottom panel, G2 phase)].
Dev Cell 2012 22, 52-63. MLN8054 purchased from Selleck.
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2. For more details, such as half maximal inhibitory concentrations (IC50s) and working concentrations of each inhibitor, please click on the link of the inhibitor of interest.
3. "+" indicates inhibitory effect. Increased inhibition is marked by a higher "+" designation.
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|Description||MLN8054 is a potent and selective inhibitor of Aurora A with IC50 of 4 nM in Sf9 insect cell. It is more than 40-fold selective for Aurora A than Aurora B. Phase 1.|
MLN8054 is an ATP-competitive, reversible inhibitor of recombinant Aurora A kinase with an IC50 of 4 nM, which shows >40-fold more selective inhibitory activity for Aurora A compared with Aurora B.  In vitro, MLN8054 exhibits the activity of growth inhibition across various cell lines from diverse tissue origins with IC50 values ranging from 0.11 μM to 1.43 μM. In addition, MLN8054 selectively inhibits Aurora A over Aurora B in cultured cells, and inhibits cell proliferation by promoting G2/M accumulation and spindle defects in multiple cultured human tumor cells lines.  A recent study shows that MLN8054 sensitizes androgen-resistant prostate cancer to radiation by inhibiting Aurora A kinase, which is associated with sustained DNA double-strand breaks. 
|In vivo||In the HCT-116 tumor-bearing mice, MLN8054, administered orally at 3 mg/kg, 10 mg/kg, and 30 mg/kg once a day, leads to dose-dependent tumor growth inhibition (TGI: 76% and 84% for 10 mg/kg and 30 mg/kg). MLN8054 also shows similar antitumor activity in the PC-3 tumor xenograft in nude mice.  In the HCT-116 xenograft-bearing animals, MLN8054 induces DNA and tubulin staining of tumor tissue in nuclear and cell body area, consistent with a senescent phenotype by increasing senescence-associated beta-galactosidase activity. |
Enzyme Assays :Recombinant murine Aurora A and Aurora B protein are expressed in Sf9 cells and purified with GST affinity chromatography. The peptide substrate for Aurora A is conjugated with biotin (Biotin-GLRRASLG). Aurora A kinase (5 nM) is assayed in 50 mM Hepes (pH 7.5)/10 mM MgCl2/5 mM DTT/0.05% Tween 20/2 μM peptide substrate/3.3 μCi/ml [γ-33P]ATP at 2 μM by using Image FlashPlates. Aurora B kinase (2 nM) is assayed with 10 μM biotinylated peptide Biotin-TKQTARKSTGGKAPR in 50 mM Tricine (pH 8.0)/2.5 mM MgCl2/5 mM DTT/10% glycerol/2% BSA/40 μCi/ml [γ-33P]ATP at 250 μM. The conditions for all other in vitro kinase assays are available upon request. MLN8054 is run in a 226 kinase screen at a 1 μM compound concentration with an ATP concentration of 10 μM for all assays.
|In vitro||DMSO||95 mg/mL (199.21 mM)|
|In vivo||15% Captisol||30 mg/mL|
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Clinical Trial Information
|NCT Number||Recruitment||Conditions||Sponsor/Collaborators||Start Date||Phases|
|NCT00652158||Terminated||Advanced Malignancies||Millennium Pharmaceuticals, Inc.||April 2006||Phase 1|
|NCT00249301||Terminated||Breast Neoplasm|Colon Neoplasm|Pancreatic Neoplasm|Bladder Neoplasm||Millennium Pharmaceuticals, Inc.||October 2005||Phase 1|
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