Biochem/physiol Actions

Reversible: yes

Primary Target26S proteasome PSMC1 and PSMC4 and the chaperone protein TCP-1

Cell permeable: yes

General description

A cell-permeable, blood-brain barrier permeable, non-toxic pyrazolone compound that potently blocks mutant Cu/Zn SOD1 cytotoxicity (EC₅₀ = 67 nM in PC12 cells expressing mutant G93A SOD1). Shown to directly interact with 26S proteasome PSMC1 and PSMC4 and the chaperone protein TCP-1 and enhance proteasome activity. Offers neuroprotection against protein aggregation induced toxicity and prolongs the survival of ALS transgenic mice by 13.3% (20 mg/kg, i.p., q.d.) Demonstrates attractive microsomal (T_1/2 = 93 & 36 min in human & mouse, respectively) and metabolic stability, aqueous solubility (250 µM) and PK profile in mice. Poorly affects the activities of 68-enzymes & receptors, hERG and Cyp450 isozymes at 10 µM.Please note that the molecular weight for this compound is batch-specific due to variable water content. Please refer to the vial label or the certificate of analysis for the batch-specific molecular weight. The molecular weight provided represents the baseline molecular weight without water.

A cell-permeable, blood-brain barrier permeable, non-toxic pyrazolone compound that potently blocks mutant Cu/Zn SOD1 cytotoxicity (EC₅₀ = 67 nM in PC12 cells expressing mutant G93A SOD1). Shown to directly interact with 26S proteasome PSMC1 and PSMC4 and the chaperone protein TCP-1 and enhance proteasome activity. Offers neuroprotection against protein aggregation induced toxicity and prolongs the survival of ALS transgenic mice by 13.3% (20 mg/kg, i.p., q.d.) Demonstrates attractive microsomal (T_1/2 = 93 & 36 min in human & mouse, respectively) and metabolic stability, aqueous solubility (250 µM) and PK profile in mice. Poorly affects the activities of 68-enzymes & receptors, hERG and Cyp450 isozymes at 10 µM.

Legal Information

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

Other Notes

Tripper, P.C., et al. 2014. ACS Chem. Neurosci.5, 823.Chen, T., et al. 2012. J. Med. Chem.55, 515.

Packaging

Packaged under inert gas

Reconstitution

Following reconstitution, aliquot and freeze (-20°C). Stock solutions are stable for up to 3 months at -20°C.

Warning

Toxicity: Standard Handling (A)