WP1130

Toxicity: Standard Handling (A)

A cell-permeable tyrphostin compound that acts as a partially selective deubiquitinase (DUB) inhibitor and suppresses JAK-Stat signaling pathway. Reported to cause accumulation of polyubiquitinated p53, JAK2 and Bcr-Abl, and reduce c-Myc and MCL-1 protein levels in several tumor cells and downregulate Stat3 and NF-κB activities (IC₅₀<1 µM in MCL cells) leading to tumor cell apoptosis (IC₅₀ ~1.2 µM in Z138 cells). Suggested to modify active site cysteine of DUB and inhibit USP5, UCH-L1, USP9x, USP14, and UCH37 activities (≥80% inhibition at 5 µM) without affecting 20S proteasome. Reported to exert stronger antiproliferative and antitumor properties than STAT3 Inhibitor III, WP1066 (Cat. No. 573097) in xenograft mouse models of CML and melanoma.

Kapuria, V., et al. 2010. Cancer Res.70, 9265.
Pham, L.V., et al. 2010. Mol. Cancer Ther.9, 2026.
Bartholomeusz, G.A, et al. 2007. Cancer Res.67, 3912.

Bartholomeusz, G.A, et al. 2007. Blood109, 3470.

Packaged under inert gas

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

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