proteasome inhibitors

Definition of proteasome inhibitor

proteasome inhibitor

(PROH-tee-uh-some in-HIH-bih-ter)
A drug that blocks the action of proteasomes. A proteasome is a large protein complex that helps destroy other cellular proteins when they are no longer needed. Proteasome inhibitors are being studied in the treatment of cancer.

Source: NCI Dictionary of Cancer Terms