Biochem/physiol Actions

Reversible: yes

Primary TargetSkp1/Skp2 interaction

Cell permeable: yes

General description

A cell-permeable dimethylanilinomethylamine compound that inhibits SKP2-dependent cellular p27^Kip1 ubiquitination activity (10 to 30 µM; 16 h; in MM1.S myeloma and HeLa cultures) by preventing the incorporation of SKP2 into the Skp1-cullin1-F-box/SCF complex. Selectively induces the accumulation of known SCF^SKP2 substrates (p21^Cip1, p27^Kip1, and p57^Kip2) in multiple myeloma RPMI 8226 cells, without inducing HSP-27 phosphorylation or affecting cellular levels of Fbw7 and β-TrCP substrates (c-Jun and β-catenin, respectively) seen with proteasome inhibition by Bortezomib (Cat. No. 504314) treatment. Shown to exhibit antiproliferation activity against 13 myeloma lines (GI₅₀ in 3 d from 4.2 to 13.2 µM), including melphalan-, doxorubicin- and steroid-resistant clones, via autophage-initiated cell death induction in a caspase-3-independent manner, and exhibit cancer-selective cytotoxicity against primary CD138⁺ malignant cells vs. CD138^- nonneoplastic blood cells from MM patient blood (viability in 24 h with/without 5 µM drug treatment = 1.38%/66.4% for CD138⁺ vs. 81.3%/94% CD138^-).

A cell-permeable dimethylanilinomethylamine compound that inhibits SKP2-dependent p27^Kip1 ubiquitination (10 to 30 µM; 16 h; in MM1.S myeloma and HeLa cultures) by preventing the incorporation of SKP2 into the Skp1-cullin1-F-box/SCF complex. Selectively induces the accumulation SCF^SKP2 substrates in multiple myeloma RPMI 8226 cells without affecting cellular levels of Fbw7 or β-TrCP substrate (c-Jun and β-catenin, respectively) seen with proteasome inhibition by Bortezomib (Cat. No. 504314) treatment. Shown to exhibit cancer-selective cytotoxicity against primary CD138⁺ malignant cells over CD138^- nonneoplastic blood cells from MM patient blood (viability in 24 h with/without 5 µM drug treatment = 1.38%/66.4% for CD138⁺ vs. 81.3%/94% CD138^-).

Legal Information

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

Other Notes

Chen, Q., et al. 2008. Blood111, 4690.

Packaging

Packaged under inert gas

10 mg in Glass bottle

Reconstitution

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

Use only fresh DMSO for reconstitution.

Warning

Toxicity: Standard Handling (A)