Product Information
CAS No.882257-11-6
Name1-[5-(2,3-dichlorophenyl)sulfanyl-4-nitrothiophen-2-yl]ethanone
Purity>98.00%
FormulaC12H7Cl2NO3S2
M.W.348.22
Solubility≥17.4 mg/mL in DMSO, <2.83 mg/mL in EtOH, <2.72 mg/mL in H2O
BackgroundP005091 is a selective and potent inhibitor of ubiquitin-specific protease 7 (USP7) with an EC50 of 4.2 μM.
P005091 is a trisubstituted thiophene with dichlorophenylthio, nitro, and acetyl substituents mediating anti-USP7 activity. P005091 exhibits potent, specific, and selective deubiquitylating activity against USP7. In contrast, P005091 does not inhibit other DUBs or other families of cysteine proteases tested (EC50 > 100 mM). P005091 inhibits the labeling of USP7 with HA-UbVME in a concentration-dependent manner. USP7-mediated cleavage of high molecular weight polyubiquitin chains is inhibited in a dose-dependent manner by P005091. Moreover, P005091 inhibits USP7- but not USP2- or USP8-mediated cleavage of poly K48-linked ubiquitin chains. USP7 inhibition by P005091 induces HDM2 polyubiquitylation and accelerates degradation of HDM2. P005091 inhibits USP7 deubiquitylating activity, without blocking proteasome activity in MM Cells. P005091 inhibits growth in MM cells and overcomes bortezomib-resistance. P005091 induces a dose-dependent decrease in viability of various MM cell lines, including those that are resistant to conventional therapies dexamethasone (Dex) (MM.1R), doxorubicin (Dox-40), or melphalan (LR5) (IC50 range 6-14 μM). 1 overcomes bone marrow stromal cell-induced growth of MM Cells.