Catalog No.S7553 Synonyms: G-868
Molecular Weight(MW): 456.21
GDC-0623 is a potent and ATP-uncompetitive MEK1 inhibitor with Ki of 0.13 nM. Phase 1.
1 Customer Review
Three types of selective inhibitors of MAPK signaling produce expected differential kinase inhibition and activation responses in HCT116 colorectal cancer cells. HCT116 cells were treated with 250nM of GDC-0973, GDC-0623, SCH772984 or DMSO for 1, 4, or 24 hours. In the washout samples, cells were drug treated for 24 hours, then changed into fresh media and harvested after 0.5 or 2 hours. Lysates were used for western blots of total and phosphorylated MEK, ERK and RSK; blotting for COX IV was used as the loading control.
Mol Cell Proteomics, 2017, 16(2):265-277. GDC-0623 purchased from Selleck.
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|Description||GDC-0623 is a potent and ATP-uncompetitive MEK1 inhibitor with Ki of 0.13 nM. Phase 1.|
In a panel of mutant cancer cell lines, GDC-0623 inhibits cellular proliferation with EC50 of 4 nM, 53 nM, 11 nM, 18 nM and 94 nM for A375 (BRAFV600E), HCT116 (KRASG13D), COLO 205 (V600E), HT-29 (V600E), and HCT116 (G13D) cells, respectively.  In isogenic KRAS HCT116 and mutant KRAS SW620 colon cells, GDC-0623 upregulates BIM via its loss of phosphorylation at Ser69. GDC-0623 plus ABT-263 induces a synergistic cell apoptosis. 
|In vivo||In vivo, GDC-0623 (40 mg/kg, p.o.) causes potent tumor growth inhibition (TGI) in mouse MiaPaCa-2 (120%), A375 (102%) and HCT116 (115%) xenografts. |
In vitro Kinase assays:0.14 μM of purified inactive recombinant MEK-1 (Upstate) protein is preincubated with inhibitors in 15 μL of kinase buffer including (20 mM MOPS pH7.2, 25 mM beta glycerol phosphate, 5 mM EGTA, 1 mM sodium orthovanadate, 1 mM DTT, 100 μM ATP, 15 mM MgCl2). After incubating 10 minutes at 30°C, 1 ng of BRAF, CRAF or BRAF V600E combined with 0.5 μg of inactive recombinant ERK2 is added to the reaction in total volume of 20 μL. After incubating 30 minutes at 30°C the reaction is stopped by adding Laemmle sample buffer. Enzyme activity is measured by determining level of phosphor-MEK by SDS-PAGE. Immunoreactive proteins are visualized with SuperSignal West Pico Chemiluminescent Substrate.
|In vitro||DMSO||91 mg/mL warmed (199.46 mM)|
|Ethanol||5 mg/mL warmed (10.95 mM)|
|In vivo||Add solvents to the product individually and in order(Data is from Selleck tests instead of citations):
5% DMSO+45% PEG 300+ddH2O
For best results, use promptly after mixing.
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