p53 Activator III, RITA

A cell-permeable, p53-targeting, tricyclic thiophene derivative that displays antitumor properties. Blocks p53—MDM2 interaction and p53 ubiquitination and induces p53-dependent apoptosis in tumor cells expressing wild-type p53. Shown to restore the tumor suppressor function of p53 by inducing its accumulation in HCT116 colon carcinoma cells (~0.1 µM) and in p53-positive SCID mice xenografted with HCT116 cells (0.1, 1 or 10 mg/kg, ip) in vivo.

A cell-permeable, p53-targeting, tricyclic thiophene derivative that displays antitumor properties. Blocks p53—MDM2 interaction and p53 ubiquitination and induces p53-dependent apoptosis in tumor cells expressing wild-type p53. Shown to restore the tumor suppressor function of p53 by inducing its accumulation in HCT116 colon carcinoma cells (~0.1 µM) and in p53-positive SCID mice xenografted with HCT116 cells (0.1, 1 or 10 mg/kg, ip) in vivo.

Cell permeable: yes

Primary Target
p53

Product does not compete with ATP.

Reversible: no

Packaged under inert gas

Toxicity: Irritant (B)

Following reconstitution, aliquot and freeze (-20°C). Stock solutions are stable for up to 6 months at -20°C.

Grinkevich, V., et al. 2005. Nat. Med.11, 1136.
Krajewski, M., et al. 2005. Nat. Med.11, 1135.
Issaeva, N., et al. 2004. Nat. Med.10, 1321.
Nieves-Neira, W., et al. 1999. Mol. Pharmacol.56, 478.
Rivera, M.I., et al. 1999. Biochem. Pharmacol.57, 1283.

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