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MK-5108 Aurora Kinase inhibitor

Cat.No.S2770

MK-5108 (VX-689) is a highly selective Aurora A inhibitor with IC50 of 0.064 nM in a cell-free assay and is 220- and 190-fold more selective for Aurora A than Aurora B/C, while it inhibits TrkA with less than 100-fold selectivity. This compound induces autophagy. Phase 1.
MK-5108 Aurora Kinase inhibitor Chemical Structure

Chemical Structure

Molecular Weight: 461.94

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Quality Control

Batch: Purity: 99.17%
99.17

Cell Culture, Treatment & Working Concentration

Cell Lines Assay Type Concentration Incubation Time Formulation Activity Description PMID
BL21 (DE3) Rosetta Function assay 30 mins Inhibition of His-tagged human Aurora A kinase (122 to 40 residues) expressed in Escherichia coli BL21 (DE3) Rosetta cells using biotinylated STK2 substrate incubated for 30 mins by HTRF assay, IC50 = 0.000064 μM. 27391133
HeLa Kyoto Function assay 20 hrs Inhibition of Aurora A kinase autophosphorylation at Thr288 in human HeLa Kyoto cells incubated for 20 hrs, IC50 = 0.3 μM. 27391133
HCC1143 Antiproliferation assay Antiproliferation activity against human HCC1143 cells assessed as inhibition of cell proliferation, IC50 = 0.42 μM. 28918096
AU565 Antiproliferation assay Antiproliferation activity against human AU565 cells assessed as inhibition of cell proliferation, IC50 = 0.45 μM. 28918096
MCF7 Antiproliferation assay Antiproliferation activity against human MCF7 cells assessed as inhibition of cell proliferation, IC50 = 0.52 μM. 28918096
HCC1806 Antiproliferation assay Antiproliferation activity against human HCC1806 cells assessed as inhibition of cell proliferation, IC50 = 0.56 μM. 28918096
CAL851 Antiproliferation assay Antiproliferation activity against human CAL851 cells assessed as inhibition of cell proliferation, IC50 = 0.74 μM. 28918096
HeLa Function assay 16 mg/kg 2 days Plasma concentration in F344/N Jcl-rnu rat xenografted with luciferase expressing human HeLa cells at 16 mg/kg, po BID for 2 days, Cp = 1.7 μM. 28918096
HeLa Function assay 32 mg/kg 2 days Plasma concentration in F344/N Jcl-rnu rat xenografted with luciferase expressing human HeLa cells at 32 mg/kg, po BID for 2 days, Cp = 4.4 μM. 28918096
Saos-2 qHTS assay qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for Saos-2 cells 29435139
MG 63 (6-TG R) qHTS assay qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for MG 63 (6-TG R) cells 29435139
OHS-50 qHTS assay qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for OHS-50 cells 29435139
SK-N-MC qHTS assay qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for SK-N-MC cells 29435139
BL21-Codon-Plus(DE3)-RIL Function assay 120 mins Inhibition of human N-terminal His-tagged Aurora A expressed in Escherichia coli BL21-Codon-Plus(DE3)-RIL cells using 5-carboxy-fluorescein-y-aminobutyric acid-Ala-Leu-Arg-Arg-Ala-Ser-Leu-Gly-NH2 as substrate after 120 mins by fluorescence polarization as, IC50 = 0.00054 μM. ChEMBL
HeLaS3 Cytotoxicity assay 3 days Cytotoxicity against human HeLaS3 cells assessed as cell growth inhibition after 3 days by WST-8 assay, IC50 = 1.26 μM. ChEMBL
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Solubility

In vitro
Batch:

DMSO : 92 mg/mL (199.16 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO.)

Water : Insoluble

Ethanol : Insoluble

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In vivo
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Chemical Information, Storage & Stability

Molecular Weight 461.94 Formula

C22H21ClFN3O3S

 Storage (From the date of receipt)
CAS No. 1010085-13-8 Download SDF Storage of Stock Solutions

Synonyms VX-689 Smiles C1CC(CCC1OC2=C(C(=CC=C2)Cl)F)(CC3=NC(=CC=C3)NC4=NC=CS4)C(=O)O

Mechanism of Action

Targets/IC50/Ki
Aurora A
(Cell-free assay)
0.064 nM
In vitro

MK-5108 inhibits Aurora-A activity in an ATP-competitive manner. This compound shows robust selectivity against the other family kinases Aurora-B (220-fold) and Aurora-C (190-fold) in the biochemical assay. It also reveals high selectivity for Aurora-A over other protein kinases. The compound inhibits only one kinase (TrkA) with <100-fold selectivity. It may be more Aurora-A selective than MLN8054. Consistent with the induction of pHH3-positive cells, this chemical induces accumulation of cells in the G2-M phase. It inhibits the proliferation of tumor cells including HCC1143, AU565, MCF-7, HCC1806 and CAL85-1 with an IC50 of 0.42 μM, 0.45 μM, 0.52 μM, 0.56μM and 0.74 μM, respectively. This compound decreases cell viability in a dose-dependent fashion in all three cell lines including LEIO285, LEIO505 and SK-LSM1 cells with an IC50 of approximately 100 nM. Incubation with it in LEIO285 increases the proportion of cells in G2/M at 48 and 72 hours post-treatment. The compound significant increases in Caspase 3/7 activity when compared to DMSO-treated control cultures at both time points. In LEIO505 cells, it leads to more cells accumulating at G2/M phases at 24 hours but not 48 hours or 72 hours.  
Kinase Assay
Biochemical kinase assays
Recombinant His-tagged human Aurora-A protein is expressed in Escherichia coli and is purified with HisTrap HP column. Purified recombinant human Aurora-B and Aurora-C protein are purchased. Experiments are done in quintuplicate in 96-well plates. The Aurora-A assay reaction is conducted in the presence of 20 μM ATP, 25 μM Tetra-Kemptide [RRR(GLRRASLG)4R-NH2], 1.0 μCi per well [γ-33P]-ATP, 0.1 ng per well Aurora-A in 50 mM Tris-HCl (pH 7.4), 15 mM Mg(OAc)2, and 0.2 mM EDTA at 30°C for 40 minutes. To investigate the inhibition mode of MK-5108 for Aurora-A, the IC50 values of this compound are determined in the presence of different concentrations of ATP. Then, the IC50 value is plotted as a function of ATP concentration to analyze the effect of ATP concentration on the IC50 value of this chemical. The Aurora-B assay reaction is conducted in the presence of 15 μM ATP, 100 μM Kemptide (GLRRASLG-NH2), 1.0 μCi per well [γ-33P]-ATP, 5.0 ng per well Aurora-B in 50 mM Tris-HCl (pH 7.4), 15 mM Mg(OAc)2, and 0.2 mM EDTA at 30 °C for 20 minuts. The Aurora-C assay reaction is conducted in the presence of 40 μM ATP, 100 μM Kemptide, 1.0 μCi per well [γ-33P]-ATP, 15 ng per well Aurora-C in 10 mM MOPS-NaOH (pH 7.4), 5 mM Mg(OAc)2, 1 mM (±) DTT, and 1 mM EGTA at 30°C for 20 minutes. After kinase reactions are terminated by adding 2.0% phosphoric acid, Tetra-Kemptide or Kemptide is trapped on the MultiScreen-PH plate. Wells are washed five times with 0.64% phosphoric acid and then monitored for radioactivity in a liquid scintillation counter.
In vivo

MK-5108 induces pHH3-positive cells at doses of 16 mg/kg and 32 mg/kg. Plasma concentration of this compound at 8 mg/kg and 16 mg/kg are 1.7 μM and 4.4 μM, respectively. This compound treatment results in the induction of pHH3 in tumor and skin tissues, which starts at 2 hours and reachs a maximum at 4 hours. This chemical treatments at 15 mg/kg and 30 mg/kg results in significant tumor growth inhibition with the change in mean tumor volume for the treatment group as a percentage of the mean change in the control group (%T/C) of 10% and −6% at day 11, and 17% and 5% at day 18, respectively. It is well tolerated at both doses, with minimal reduction in body weight. This compound also exhibits significant antitumor activity through intermittent dosing in nude rats bearing SW48 tumors, it at 15 mg/kg and 45 mg/kg causes dose-dependent tumor growth inhibition with a %T/C of 35% and 7% at day 10, and 58% and 32% at day 27, respectively.

References

Applications

Methods Biomarkers Images PMID
Western blot p-Aurora A / Aurora-A / N-MYC
S2770-WB1
29262328
Growth inhibition assay Cell viability
S2770-viability1
24756365

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