Trametinib DMSO solvate

Catalog No.S4484 Batch:S448402

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Technical Data

Formula

C28H29FIN5O5S

Molecular Weight 693.53 CAS No. 1187431-43-1
Solubility (25°C)* In vitro DMSO 6 mg/mL warmed with 50ºC water bath (8.65 mM)
Water Insoluble
Ethanol Insoluble
* <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.)

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Biological Activity

Description Trametinib DMSO solvate is a highly specific and potent MEK1/2 inhibitor with IC50 of 0.92 nM/1.8 nM in cell-free assay. Trametinib activates autophagy and induces apoptosis.
Targets
MEK1 [1]
(Cell-free assay)
MEK2 [1]
(Cell-free assay)
0.92 nM 1.8 nM
In vitro

GSK1120212 inhibits the phosphorylation of MBP regardless of the isotype of Raf and MEK, with IC50 ranging from 0.92 nM to 3.4 nM. GSK1120212 demonstrates no inhibition of the kinase activities of c-Raf, B-Raf, ERK1 and ERK2. In addition, GSK1120212 does not show drastic inhibitory activity against the other 98 kinases. GSK1120212 displays potent inhibitory activity against human colorectal cancer cell lines. HT-29 and COLO205 cells, which are known to have a constitutively active B-Raf mutant, are most sensitive to GSK1120212 with IC50 0.48 nM and 0.52 nM, respectively. The cell lines bearing a K-Ras mutation show a wide range of sensitivity to GSK1120212 with IC50 of 2.2-174 nM. In contrast, COLO320 DM cells, bearing the wild-type gene in both B-Raf and K-Ras, are found to be resistant to GSK1120212 even at 10 μM. GSK1120212 treatment for 24 hours induces cell-cycle arrest at the G1 phase in all sensitive cell lines. Consistently, GSK1120212 treatment leads to upregulation of p15INK4b and/or p27KIP1 in most of the colorectal cancer cell lines. GSK1120212 inhibits constitutive ERK phosphorylation in all sensitive cell lines. GSK1120212 induces apoptosis both in HT-29 and COLO205 cells, but that COLO205 cells are more sensitive to GSK1120212 than HT-29 cells in terms of apoptosis induction.[1] GSK1120212 blocks tumor necrosis factor-α and interleukin-6 production from peripheral blood mononuclear cells (PBMCs).[2]

In vivo

Oral administration of GSK1120212 at 0.3 mg/kg or 1 mg/kg once daily for 14 days is effective in inhibiting the HT-29 xenograft growth, and 1 mg/kg of GSK1120212 almost completely blocks the tumor increase. The phosphorylation of ERK1/2 is completely inhibited in the established tumor tissues by single oral dose of 1 mg/kg GSK1120212, and both p15INK4b and p27KIP1 protein levels are upregulated after 14 days of treatment with GSK1120212. In the COLO205 xenograft model, tumor regression is observed even at a dose of 0.3 mg/kg. At a dose of 1 mg/kg, a complete regression is obtained in 4 out of 6 mice in which the tumor degenerates to the point that tumor volume is not measurable.[1] Administration of GSK1120212 at 0.1 mg/kg almost completely suppresses adjuvant-induced arthritis (AIA) and type II collagen-induced arthritis (CIA) in Lewis rats or DBA1/J mice, respectively.[2]

Protocol (from reference)

Kinase Assay:

[1]

  • Raf-MEK-ERK cascade kinase assay

    Non-phosphorylated myelin basic protein (MBP) is coated onto an ELISA plate, and the active form of B-Raf/c-Raf is mixed with unphosphorylated MEK1/MEK2 and ERERK2 in 10 μM ATP and 12.5 mM MgCl2 containing MOPS buffer in the presence of various concentrations of GSK1120212. The phosphorylation of MBP is detected by the anti-phospho-MBP antibody.

Cell Assay:

[1]

  • Cell lines

    HT-29, HCT-15, HCT116, COLO205, LS-174T, SW480, SW620, T84, LoVo and COLO320 cells

  • Concentrations

    ~10 μM

  • Incubation Time

    3 or 4 days

  • Method

    Exponentially growing cells are precultured in 96-well tissue culture plates for 24 hours and then exposed to GSK1120212. Cell growth is determined by an in vitro toxicology assay kit, sulforhodamine B based. For apoptosis assay, both floating and adherent cells are collected and fixed with 70% ethanol. After washing with PBS, the cells are suspended in 100 μg/mL RNase and 25 μg/mL propidium iodide (PI) and incubated at 37 °C for 30 minutes in the dark. The DNA content of each single cell is determined using the flow cytometer Cytomics FC500 or Guava EasyCyte plus.

Animal Study:

[1]

  • Animal Models

    Female BALB/c-nu/nu mice inoculated subcutaneously with HT-29 or COLO205 cells

  • Dosages

    ~1 mg/kg/day

  • Administration

    o.g.

Selleck's Trametinib DMSO solvate has been cited by 7 publications

Identification of Collagen-Suppressive Agents in Keloidal Fibroblasts Using a High-Content, Phenotype-Based Drug Screen [ JID Innov, 2024, 4(2):100248] PubMed: 38303762
BCL-XL inhibition induces an FGFR4-mediated rescue response in colorectal cancer [ Cell Rep, 2022, 38(7):110374] PubMed: 35172148
eEF2K Activity Determines Synergy to Cotreatment of Cancer Cells With PI3K and MEK Inhibitors [ Mol Cell Proteomics, 2022, 21(6):100240] PubMed: 35513296
Tumor suppressor miR-193a-3p enhances efficacy of BRAF/MEK inhibitors in BRAF-mutated colorectal cancer [ Cancer Sci, 2021, 112(9):3856-3870] PubMed: 34288281
Dual-specificity protein phosphatase DUSP4 regulates response to MEK inhibition in BRAF wild-type melanoma [ Br J Cancer, 2020, 122(4):506-516] PubMed: 31839677
Response and Resistance to Paradox-Breaking BRAF Inhibitor in Melanomas In Vivo and Ex Vivo [ Mol Cancer Ther, 2018, 17(1):84-95] PubMed: 29133617
Synthetic lethal interaction of cetuximab with MEK1/2 inhibition in NRAS-mutant metastatic colorectal cancer [ Oncotarget, 2016, 7(50):82185-82199] PubMed: 27636997

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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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