A cell-permeable phenylsulfonyloxyiminocyclohexadienone compound that acts as a potent, selective, and reversible inhibitor of p300 histone acetyl transferase (IC50 = 1.98 µM). Shown to occupy Ac-CoA binding pocket of p300, and less potent to CBP, PCAF, GCN5 and GNAT. Suppresses Histone H3 and H4 acetylation in triple negative breast cancer cell line MDAMB-468 as well as in HCT116 cell line and blocks p300-mediated STAT3 phosphorylation in pancreatic cancer cell line MIA Paca-2. Does neither inhibit the activities of histone deacetylases 1, 6, and 11 nor 8-diverse histone methyltransferases tested (DOT1, EZH1, G9a, PRMT1, SETD2, SET7-9, SMYD2, and SUV39H2). Reported to suppress tumor growth in mice bearing tumor xenografts of MDAMB-468 cell line (at 500 µg/100 µl, i.p. twice a week).
Biochem/physiol Actions
Cell permeable: yes
Primary Target p300 HAT
Reversible: yes
Packaging
Packaged under inert gas
Warning
Toxicity: Standard Handling (A)
Reconstitution
Following reconstitution, aliquot and freeze (-20°C). Stock solutions are stable for up to 3 months at -20°C.
Use only fresh DMSO for reconstitution.
Other Notes
Yang, H., et al. 2013. Mol. Cancer Ther.12, 610.
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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