A cell-permeable, ATP competitive, reversible indolizinoquinoxalin derivative that acts as a specific inhibitor of T-LAK-cell-originated protein kinase (TOPK/PBK)(IC50 = 2 µM). Does not affect the activities of ERK1, JNK1, and p38 MAP kinases. At higher concentrations (~ 5 µM) also inhibits MEK1 activity. Shown to suppress the proliferation of HCT116 colon cancer cell line and block tumor growth in colon cancer xenograft models in a dose-dependent manner. Diminishes TOPK activity only in cells over-expressing TOPK without significantly affecting cells with low levels of expression. Also shown to increase the expression of p53, active caspase-7, cleaved poly-ADP-Ribose polymerase, and increase the phosphorylation of Cdc2.
Please note that the molecular weight for this compound is batch-specific due to variable water content.
A cell-permeable, selective, ATP competitive, reversible inhibitor of T-LAK-cell-originated protein kinase (IC₅₀ = 2 µM).
Biochem/physiol Actions
Cell permeable: yes
Primary Target TOPK/PBK
Warning
Toxicity: Standard Handling (A)
Reconstitution
Following reconstitution, aliquot and freeze (-29°C). Stock solutions are stable for up to 3 months at -20°C.
Use only fresh DMSO for reconstitution.
Other Notes
Kim, D., et al. 2012, Cancer Res.72, 3060.
Legal Information
CALBIOCHEM is a registered trademark of Merck KGaA, Darmstadt, Germany
Storage Class Code
11 - Combustible Solids
WGK
WGK 3
Flash Point(F)
Not applicable
Flash Point(C)
Not applicable
Certificates of Analysis (COA)
Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.
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