Biochem/physiol Actions

Target K_i: 29 nM, 95 nM and 89 nM for CDC25A, CDC25B2 and CDC25C, respectively; 210 nM for CDC25B2

Reversible: no

Product does not compete with ATP.

Primary TargetCD25A

Cell permeable: yes

General description

A cell-permeable 7-substituted quinolinedione compound that displays antiproliferative properties. Acts as a potent, irreversible and mixed competitive inhibitor of the CDC25 phosphatase family (K_i = 29 nM, 95 nM and 89 nM for CDC25A, CDC25B2 and CDC25C, respectively; IC₅₀ = 210 nM for CDC25B2) and displays nearly 20- and 450-fold greater selectivity for the CDC252 phosphatases over VHR and PTP1B (IC₅₀ = 4.0 µM and >100 µM, respectively). Reported to arrest cell cycle progression, inhibit Cdk dephosphorylation and delay tumor growth (IC₅₀ = ~1.5 µM in NCI-60 tumor cell panel). Shown to modify CDC25A catalytic domain and to block cellular ERK dephosphorylation in HeLa-CDC25A cells.

A cell-permable, potent, irreversible, and competitive inhibitor of the Cdc25 phosphatase family (K_i = 29 nM, 95 nM, and 89 nM for Cdc25A, Cdc25B2, and Cdc25C, respectively) with anti-proliferative properties. Displays nearly 20- and 450-fold greater selectivity over VHR and PTP1B (IC₅₀ = 4.0 µM and >100 µM, respectively). Reported to arrest cell cycle progression, inhibit Cdk dephosphorylation, and delay tumor growth (mean IC₅₀ = 1.5 µM in NCI-60 tumor cell panel). Also shown to block ERK dephosphorylation caused by ectopic Cdc25A expression.

Legal Information

CALBIOCHEM is a registered trademark of Merck KGaA, Darmstadt, Germany

Other Notes

Chao, J. I., et al. 2004. J. Biol. Chem.279, 20267.Han, Y., et al. 2004. J. Pharmacol. Exp. Ther.309, 64.Pu, L., et al. 2002. J. Biol. Chem.277, 46877.Lazo, J.S., et al. 2001. J. Med. Chem.44, 4042.

Packaging

Packaged under inert gas

5 mg in Plastic ampoule

Reconstitution

Following reconstitution, aliquot and freeze (-20°C). DMSO stock solutions are stable for up to 1 month at -20°C. Ethanol stock solutions are stable for up to 6 months at -20°C.

Warning

Toxicity: Carcinogenic / Teratogenic (D)