Mocetinostat (MGCD0103)

Catalog No.S1122 Batch:S112207

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Technical Data

Formula

C23H20N6O
Molecular Weight 396.44 CAS No. 726169-73-9
Solubility (25°C)* In vitro DMSO 60 mg/mL (151.34 mM)
Water Insoluble
Ethanol Insoluble
In vivo (Add solvents to the product individually and in order)
Clear solution
30%PEG400 0.5%Tween80 5%Propylene glycol
30.0mg/ml Taking the 1 mL working solution as an example, add 300 μL of 100 mg/ml clarified PEG400 stock solution to 5 μL of Tween80, mix evenly to clarify it; add 50 μL Propylene glycol to the above system, mix evenly to clarify it; then continue to add 645 μL ddH2O to adjust the volume. to 1 mL. The mixed solution should be used immediately for optimal results. 
* <1 mg/ml means slightly soluble or insoluble.
* 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.
* Room temperature shipping (Stability testing shows this product can be shipped without any cooling measures.)

Preparing Stock Solutions

Biological Activity

Description Mocetinostat (MGCD0103, MG0103) is a potent HDAC inhibitor with most potency for HDAC1 with IC50 of 0.15 μM in a cell-free assay, 2- to 10- fold selectivity against HDAC2, 3, and 11, and no activity to HDAC4, 5, 6, 7, and 8. Mocetinostat (MGCD0103) induces apoptosis and autophagy. Phase 2.
Targets
HDAC1 [1]
(Cell-free assay)		 HDAC2 [1]
(Cell-free assay)		 HDAC11 [1]
(Cell-free assay)		 HDAC3 [1]
(Cell-free assay)
0.15 μM 0.29 μM 0.59 μM 1.66 μM
In vitro MGCD0103 inhibits only a subset of the nine human recombinant HDACs, including HDAC1, HDAC2, HDAC3, and HDAC11 at nanomolar or low micromolar concentrations, in a dose-dependent manner. MGCD0103 reveals most potent inhibitory activity against human HDAC1 and HDAC2 enzymes in vitro, and it does not inhibit class II HDACs. The exocyclic amino group in MGCD0103 is necessary for enzyme inhibitory activity because HDAC-inhibitory activity against HDAC1 and HDAC2 is completely abolished with the desamino analogue. The inhibitory activity of MGCD0103 reaches the maximum plateau at 6 μM, and the maximal inhibitable enzyme pool affected by MGCD0103 is 75% of the total enzyme activity in HCT116 cells whereas NVP-LAQ824 inhibits almost 100% of that in these cells. In A549 cells, MGCD0103 also exhibits dose-dependent inhibition of HDAC activity in whole cells. [1]
In vivo MGCD0103 significantly inhibites growth of human tumor xenografts in nude mice and the antitumor activity correlated with induction of histone acetylation in tumors. P.O. administration of MGCD0103 (2HBr salt) significantly decreases growth of implanted advanced A549 tumors in nude mice in a dose-dependent manner after 13 days of daily administration. MGCD0103 (170 mg/kg for 2HBr salt, corresponding to 120 mg/kg of free base) significantly blockes growth of tumors compared with vehicle treatment alone with no change in body weight. In addition, MGCD0103 does not reduce WBC counts and is well tolerated. MGCD0103 is also orally active in many other human tumor xenograft models including NSCLC H1437. MGCD0103 at 80 mg/kg (free base) almost completely blocks the growth of H1437 tumors after 13 days of daily p.o. administration with no reduction of body weight in animals. [1] MGCD0103 reduces pulmonary arterial pressure more dramatically than tadalafil, a standard-of-care therapy for human pulmonary hypertension that functions as a vasodilator. Moreover, MGCD0103 improves pulmonary artery acceleration time and reduced systolic notching of the pulmonary artery flow envelope, which suggests a positive impact of the HDAC inhibitor on pulmonary vascular remodeling and stiffening. [2]

Protocol (from reference)

Kinase Assay:[1]
  • HDAC enzyme assay in vitro

    The deacetylase enzyme assay is based on a homogeneous fluorescence release assay. Purified recombinant HDAC enzymes are incubated with MGCD0103 diluted in various concentrations for 10 minutes in assay buffer [25 mM HEPES (pH 8.0), 137 mM NaCl, 1 mM MgCl2, 2.7 mM KCl] at room temperature. The substrate Boc-Lys(ε-Ac)-AMC is added to the reaction for further incubation at 37 °C. The concentration of the substrate and the incubation time varies for different isotypes of HDAC enzymes. A 20-min trypsin incubation at room temperature allows the release of the fluorophore from the deacetylated substrate. The fluorescent signal is detected by fluorometer at excitation of 360 nm, emission of 470 nm, and cutoff at 435 nm.
Cell Assay:[1]
  • Cell lines

    Human mammary epithelial cells (HMEC), human foreskin fibroblasts (MRHF) cells

  • Concentrations

    0-60 μM

  • Incubation Time

    72 hours

  • Method

    Human mammary epithelial cells (HMEC) and human foreskin fibroblasts (MRHF) cells in 96-well plates are incubated with MGCD0103 at various concentrations for 72 hours at 37 °C in 5% CO2. MTT is added at a final concentration of 0.5 mg/ml and incubated with the cells for 4 hours before an equal volume of solubilization buffer [50% N,N-dimethylformamide, 20% SDS (pH 4.7)] is added. After overnight incubation, solubilized dye is quantified by reading at 570 nm using a reference at 630 nm. Absorbance values are converted to cell numbers according to a standard growth curve of the relevant cell line. The concentration which reduces cell numbers to 50% relative to DMSO-treated cells is determined as MTT IC5
Animal Study:[1]
  • Animal Models

    Female CD-1 nude mice bearing H1437 tumors

  • Dosages

    80 mg/kg

  • Administration

    Administered via p.o.

Customer Product Validation

Data from [Oncogene, 2012, 32, 3896-903]

Data from [PLoS One, 2012, 7, e52095]

Data from [J Biol Chem, 2011, 286, 23842–23851]

Data from [PLoS One, 2011, 6, e17138]

Selleck's Mocetinostat (MGCD0103) has been cited by 115 publications

Romidepsin and afatinib abrogate JAK-STAT signaling and elicit synergistic antitumor effects in cutaneous T-cell lymphoma [ J Invest Dermatol, 2024, S0022-202X(23)03210-4] PubMed: 38219917
Pancreatic cancer acquires resistance to MAPK pathway inhibition by clonal expansion and adaptive DNA hypermethylation [ Clin Epigenetics, 2024, 16(1):13] PubMed: 38229153
Epigenetic and molecular coordination between HDAC2 and SMAD3-SKI regulates essential brain tumour stem cell characteristics [ Nat Commun, 2023, 14(1):5051] PubMed: 37598220
Epigenetic and molecular coordination between HDAC2 and SMAD3-SKI regulates essential brain tumour stem cell characteristics [ Nat Commun, 2023, 14(1):5051] PubMed: 37598220
Genotype-Tailored ERK/MAPK Pathway and HDAC Inhibition Rewires the Apoptotic Rheostat to Trigger Colorectal Cancer Cell Death [ Mol Cancer Ther, 2023, 22(1):52-62] PubMed: 36343387
CSE1L is a negative regulator of the RB-DREAM pathway in p53 wild-type NSCLC and can be targeted using an HDAC1/2 inhibitor [ Sci Rep, 2023, 13(1):16271] PubMed: 37759078
CSE1L is a negative regulator of the RB-DREAM pathway in p53 wild-type NSCLC and can be targeted using an HDAC1/2 inhibitor [ Sci Rep, 2023, 13(1):16271] PubMed: 37759078
Phosphorylation of TGIF2 represents a therapeutic target that drives EMT and metastasis of lung adenocarcinoma [ BMC Cancer, 2023, 23(1):52] PubMed: 36647029
Hdac1-deficiency affects the cell cycle axis Cdc25-Cdk1 causing impaired G2/M phase progression and reduced cardiomyocyte proliferation in zebrafish [ Biochem Biophys Res Commun, 2023, 665:98-106] PubMed: 37149988
HDAC Inhibitors Alleviate Uric Acid-Induced Vascular Endothelial Cell Injury by Way of the HDAC6/FGF21/PI3K/AKT Pathway [ J Cardiovasc Pharmacol, 2023, 81(2):150-164] PubMed: 36607630

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SHIPPING AND STORAGE
Selleck products are transported at room temperature. If you receive the product at room temperature, please rest assured, the Selleck Quality Inspection Department has conducted experiments to verify that the normal temperature placement of one month will not affect the biological activity of powder products. After collecting, please store the product according to the requirements described in the datasheet. Most Selleck products are stable under the recommended conditions.

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