Mocetinostat (MGCD0103)

Alias: MG0103; MG-0103; MG 0103; MGCD0103; MGCD 0103; MGCD-0103
Cat No.:V0259 Purity: ≥98%
Mocetinostat (formerly MGCD-0103 or MG-0103), is a potent, benzamide-based and orally bioavailable Class I-selective inhibitor of human histone deacetylases (HDAC) with potentianl anticancer activities.
Mocetinostat (MGCD0103) Chemical Structure CAS No.: 726169-73-9
Product category: HDAC
This product is for research use only, not for human use. We do not sell to patients.
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Purity & Quality Control Documentation

Purity: ≥98%

Product Description

Mocetinostat (formerly MGCD-0103 or MG-0103), is a potent, benzamide-based and orally bioavailable Class I-selective inhibitor of human histone deacetylases (HDAC) with potentianl anticancer activities. Mocetinostat shows little to no inhibition against class II HDACs (HDAC4–8), but it inhibits class I HDACs like HDAC1/2/3 and class IV (like HDAC11) with IC50s of 0.15 μmol/L, 0.29 μmol/L, 1.66 μmol/L, and 0.59 μmol/L, respectively. Acute myelogenous leukemia, Hodgkin's lymphoma, and follicular lymphoma are among the cancers for which clinical trials are presently being conducted.

Biological Activity I Assay Protocols (From Reference)
Targets
HDAC1 ( IC50 = 0.15 μM ); HDAC2 ( IC50 = 0.29 μM ); HDAC11 ( IC50 = 0.59 μM ); HDAC3 ( IC50 = 1.66 μM )
ln Vitro

In vitro activity: Mocetinostat is an effective, orally administered, and isotype-selective HDAC (Class I/IV) inhibitor, with IC50 values for HDAC1, HDAC2, HDAC3, and HDAC11 of 0.15, 0.29, 1.66, and 0.59 μM, respectively. There is no inhibition of HDAC4, HDAC5, HDAC6, HDAC7, or HDAC8 by metacetinostat. HDAC inhibitory activity is necessary for the strong and specific antiproliferative effects of metinostat (MGCD0103) against a variety of human cancer cell lines that are demonstrated in vitro. Mocetinostat (MGCD0103) partially inhibits the activity of the cellular HDAC enzyme in all tested cell lines, with varying maximum inhibition levels ranging from 75% to 85% of total activity. In intact cancer cells, the IC50 of mocetinostat is not dependent on the origin of the tissue. MGCD0103 inhibits HDAC activity in A549 cells in a dose-dependent manner throughout the entire cell. In A549 cells, mocetinostat inhibits up to 80% of total activity at high concentrations. Mocetinostat causes G1 and G2-M accumulation as well as a notable S-phase depletion in HCT116 cells[1].

ln Vivo
MGCD0103 significantly and dose-dependently inhibits the growth of human tumor xenografts in nude mice; the antitumor activity was found to be correlated with the induction of histone acetylation in tumors. After 13 days of daily administration, the p.o. administration of Mocetinostat (MGCD0103) (2HBr salt) significantly reduces the growth of implanted advanced A549 tumors in nude mice in a dose-dependent manner. With no change in body weight, mocetinostat (170 mg/kg for 2HBr salt, or 120 mg/kg of free base) significantly inhibits tumor growth when compared to vehicle treatment alone (P<0.05 in post-ANOVA Dunnett's test)[1].
Enzyme Assay
The homogeneous fluorescence release assay serves as the foundation for the deacetylase enzyme assay. For ten minutes, pure recombinant HDAC enzymes are incubated in assay buffer (25 mM HEPES (pH 8.0), 137 mM NaCl, 1 mM MgCl2, and 2.7 mM KCl) at room temperature with MGCD0103 diluted in different concentrations. For additional incubation at 37 °C, the substrate Boc-Lys(ε-Ac)-AMC is added to the reaction. For various isotypes of HDAC enzymes, there are differences in the substrate concentration and incubation duration. After a room temperature trypsin incubation of 20 minutes, the fluorophore can be released from the deacetylated substrate. A fluorometer is used to detect the fluorescent signal at 360 nm of excitation, 470 nm of emission, and 435 nm of cutoff.
Cell Assay
Mocetinostat is added to cells in 96-well plates and incubated for 72 hours at 37°C with 5% CO2 at different concentrations. After incubating the cells for four hours at a final concentration of 0.5 mg/mL of MTT, an equal volume of solubilization buffer (50 percent N,N-dimethylformamide and 20 percent SDS, pH 4.7)) is added. The solubilized dye is measured at 570 nm using a reference at 630 nm following an overnight incubation. A standard growth curve of the relevant cell line is used to convert absorbance values to cell numbers. MTT IC50 is the concentration at which the number of cells is reduced by 50% in comparison to DMSO-treated cells.[1]
Animal Protocol
Mice: The used mice are 8–10 week old female CD-1 nude mice. Under general anesthesia, tumor fragments (30 mg) that have undergone three serial passages in vivo are implanted subcutaneously (s.c.) via a small incision made on the mice's flank. PBS acidified with 0.1 N HCl or PEG400/0.2 N HCl saline, 40:60, is the vehicle in which mocetinostat is dissolved and dosed p.o. as solutions every day. Three times a week for at least two weeks, tumor volumes and body weight are recorded. Six to eight animals make up each experimental group. Blood is drawn from animals at different times for pharmacokinetic studies, and samples of plasma are examined.
Rats: Forty rats weighing 220±20 g each are split into four groups at random to receive different dosages of Mocetinostat: Low, Medium, High, and Control groups, each containing ten rats. There are three different concentrations of mocetinostat that are dissolved in corn oil suspension (20, 40, and 80 mg/mL). Every morning for seven days, three distinct Mocetinostat groups (Low group, Medium group, and High group) receive intragastric injections of Mocetinostat at doses of 20, 40, and 80 mg/kg, respectively. The same administration method is used to give saline to the control group. Six probe drugs are mixed with corn oil and given intragastrically to rats in three Mocetinostat groups and a control group at 8 days' dawn. The single dosage for each probe drug is 10 mg/kg for Bupropion, Phenacetin, Metoprolol, Testosterone, and Omeprazole, and 1 mg/kg for Tolbutamide.
References

[1]. MGCD0103, a novel isotype-selective histone deacetylase inhibitor, has broad spectrum antitumor activity in vitro and in vivo. Mol Cancer Ther. 2008 Apr;7(4):759-68.

[2]. The Effect of MGCD0103 on CYP450 Isoforms Activity of Rats by Cocktail Method. Biomed Res Int. 2015;2015:517295.

These protocols are for reference only. InvivoChem does not independently validate these methods.
Physicochemical Properties
Molecular Formula
C23H20N6O
Molecular Weight
396.44
Exact Mass
396.17
Elemental Analysis
C, 69.68; H, 5.08; N, 21.20; O, 4.04
CAS #
726169-73-9
Related CAS #
726169-73-9; 944537-89-7 (HBr)
Appearance
White to off-white solid powder
SMILES
C1=CC=C(C(=C1)N)NC(=O)C2=CC=C(C=C2)CNC3=NC=CC(=N3)C4=CN=CC=C4
InChi Key
HRNLUBSXIHFDHP-UHFFFAOYSA-N
InChi Code
InChI=1S/C23H20N6O/c24-19-5-1-2-6-21(19)28-22(30)17-9-7-16(8-10-17)14-27-23-26-13-11-20(29-23)18-4-3-12-25-15-18/h1-13,15H,14,24H2,(H,28,30)(H,26,27,29)
Chemical Name
N-(2-aminophenyl)-4-[[(4-pyridin-3-ylpyrimidin-2-yl)amino]methyl]benzamide
Synonyms
MG0103; MG-0103; MG 0103; MGCD0103; MGCD 0103; MGCD-0103
HS Tariff Code
2934.99.9001
Storage

Powder      -20°C    3 years

                     4°C     2 years

In solvent   -80°C    6 months

                  -20°C    1 month

Shipping Condition
Room temperature (This product is stable at ambient temperature for a few days during ordinary shipping and time spent in Customs)
Solubility Data
Solubility (In Vitro)
DMSO: 13~50 mg/mL (32.8~126.1 mM)
Water: <1 mg/mL
Ethanol: <1 mg/mL
Solubility (In Vivo)
30% PEG400+0.5% Tween80+5% propylene glycol: 30mg/mL
 (Please use freshly prepared in vivo formulations for optimal results.)
Preparing Stock Solutions 1 mg 5 mg 10 mg
1 mM 2.5224 mL 12.6122 mL 25.2245 mL
5 mM 0.5045 mL 2.5224 mL 5.0449 mL
10 mM 0.2522 mL 1.2612 mL 2.5224 mL

*Note: Please select an appropriate solvent for the preparation of stock solution based on your experiment needs. For most products, DMSO can be used for preparing stock solutions (e.g. 5 mM, 10 mM, or 20 mM concentration); some products with high aqueous solubility may be dissolved in water directly. Solubility information is available at the above Solubility Data section. Once the stock solution is prepared, aliquot it to routine usage volumes and store at -20°C or -80°C. Avoid repeated freeze and thaw cycles.

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Clinical Trial Information
NCT Number Recruitment interventions Conditions Sponsor/Collaborators Start Date Phases
NCT04299113 Recruiting Drug: Vinorelbine
Drug: Mocetinostat
Rhabdomyosarcoma Jonsson Comprehensive Cancer
Center
May 14, 2020 Phase 1
NCT03220477 Active
Recruiting
Drug: Guadecitabine
Drug: Mocetinostat
Lung Cancer Memorial Sloan Kettering Cancer
Center
August 4, 2017 Phase 1
NCT02236195 Completed Drug: Mocetinostat Urothelial Carcinoma Mirati Therapeutics Inc. October 2014 Phase 2
NCT02018926 Completed Drug: Mocetinostat
Drug: Azacitidine
Myelodysplastic Syndrome Mirati Therapeutics Inc. December 2013 Phase 1
Phase 2
NCT00359086 Completed Drug: MGCD0103 Lymphoma Mirati Therapeutics Inc. August 2006 Phase 2
Biological Data
  • Mocetinostat (MGCD0103)

    Mocetinostat (MGCD0103)

  • Mocetinostat (MGCD0103)

    Improved hemodynamics in class I HDAC inhibitor-treated animals.Circ Res.2012 Mar 2;110(5):739-48.
  • Mocetinostat (MGCD0103)

    Class I HDAC inhibition suppresses multiple pathological pathways in the RV.Circ Res.2012 Mar 2;110(5):739-48.
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