HBX41108 is a specific small-molecule inhibitor of USP7/HAUSP ubiquitin protease with IC50 of 424 nM for inhibition of Ub-AMC hydrolysis by USP7.
HBX41108 shows little to no activity against a panel of serine, aspartic, and metalloproteases, calpain-1 (IC50 > 10 μmol/L), and cathepsins B, L, and S (IC50 > 1 μmol/L).
HBX 41108 inhibits USP7-mediated p53 deubiquitination (IC50=0.8 uM), increases p53 levels in a nongenotoxic manner.
HBX41108 (0.1-3 uM) inhibits HCT116 cancer cell growth and induces apoptotic cell death, induces apoptosis in a p53-dependent manner.
