CEP-18770

Description	CEP-18770 demonstrates marginal prevention of the tryptic and peptidyl gultamyl activities of the protesome. The IC50 values of CEP-18770 are similar to those of bortezomib, with the chymotryptic and caspase-like activities being inhibited at low-nanomolar concentrations.CEP-18770 inhibits A2780 ovarian cancer cells, PC3 prostate cancer, H460, LoVo colon cancer, RPMI8226 multiple myeloma cancer and HS-Sultan anaplastic non-Hodgkin lymphoma with IC50 values of 13.7, 22.2, 34.2 11.3, 5.6 and 8.2 nM, respectively.CEP-18770 blocks the ubiquitin-proteasome pathway in several MM and in the chronic myelogenous leukemia cell line, K562. CEP-18770 causes an accumulation of ubiquitinated proteins over 4 to 8 hours with a profile similar to that observed after bortezomib treatment.IκBα degradation is completely blocked by pretreatment with CEP-18770. CEP-18770 significantly inhibits high levels of NF-κB activity in both RPMI-8226 and U266 cells. The time- and concentration-dependent suppression o
Pathways	Protease/Metabolic Enzyme
Targets	Proteasome

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