MK-5108

Synonyms: VX-689

MK-5108 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. MK-5108 (VX-689) induces autophagy. Phase 1.

MK-5108 Chemical Structure

MK-5108 Chemical Structure

CAS No. 1010085-13-8

Purity & Quality Control

MK-5108 Related Products

Cell Data

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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Biological Activity

Description MK-5108 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. MK-5108 (VX-689) induces autophagy. Phase 1.
Targets
Aurora A [1]
(Cell-free assay)
0.064 nM
In vitro
In vitro

MK-5108 inhibits Aurora-A activity in an ATP-competitive manner. MK-5108 shows robust selectivity against the other family kinases Aurora-B (220-fold) and Aurora-C (190-fold) in the biochemical assay. MK-5108 also reveals high selectivity for Aurora-A over other protein kinases. MK-5108 inhibits only one kinase (TrkA) with <100-fold selectivity. MK-5108 may be more Aurora-A selective than MLN8054. Consistent with the induction of pHH3-positive cells, MK-5108 induces accumulation of cells in the G2-M phase. MK-5108 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. [1] MK-5108 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 MK-5108 in LEIO285 increases the proportion of cells in G2/M at 48 and 72 hours post-treatment. MK-5108 significant increases in Caspase 3/7 activity when compared to DMSO-treated control cultures at both time points. In LEIO505 cells, MK-5108 leads to more cells accumulating at G2/M phases at 24 hours but not 48 hours or 72 hours.  [2]

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 MK-5108 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 MK-5108. 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.
Cell Research Cell lines HeLa-S3 cells
Concentrations 0 μM -1 μM
Incubation Time 12 hours
Method

HeLa-S3 cells are synchronized at the G1-S phase boundary by double thymidine block with 2 mM thymidine. Cells are washed and seeded to 96-well cell culture plates. After 4 hours, an equal volume of medium containing MK-5108 is added to each well. Nocodazole (300 nM) is used as a 100% control. The cells are fixed overnight with cold methanol 12 hours after seeding. Then, the cells are stained with rabbit anti-phospho-histone H3 Ser28 antibody and then with anti-rabbit IgG-Cy5. Total nuclei are stained with 10 mg/mL 4,6-diamidino-2-phenylindole. Immunostained images are acquired using the IN Cell Analyzer1000 with ×10 objective lens. After acquisition of images, data are analyzed. The %pHH3-positive index is determined by measuring the %pHH3-positive cell counts per total nuclei counts for each sample, then by normalizing with respect to nocodazole-treated cells.

Experimental Result Images Methods Biomarkers Images PMID
Western blot p-Aurora A / Aurora-A / N-MYC 29262328
Growth inhibition assay Cell viability 24756365
In Vivo
In vivo

MK-5108 induces pHH3-positive cells at doses of 16 mg/kg and 32 mg/kg. Plasma concentration of MK-5108 at 8 mg/kg and 16 mg/kg are 1.7 μM and 4.4 μM, respectively. MK-5108 treatment results in the induction of pHH3 in tumor and skin tissues, which starts at 2 hours and reachs a maximum at 4 hours. MK-5108 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. MK-5108 is well tolerated at both doses, with minimal reduction in body weight. MK-5108 also exhibits significant antitumor activity through intermittent dosing in nude rats bearing SW48 tumors, MK-5108 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. [1]

Animal Research Animal Models SCID mice bearing HCT116 tumors
Dosages 30 mg/kg
Administration Oral administration

Chemical Information & Solubility

Molecular Weight 461.94 Formula

C22H21ClFN3O3S

CAS No. 1010085-13-8 SDF Download MK-5108 SDF
Smiles C1CC(CCC1OC2=C(C(=CC=C2)Cl)F)(CC3=NC(=CC=C3)NC4=NC=CS4)C(=O)O
Storage (From the date of receipt)

In vitro
Batch:

DMSO : 92 mg/mL ( (199.16 mM) Moisture-absorbing DMSO reduces solubility. Please use fresh DMSO.)

Water : Insoluble

Ethanol : Insoluble


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