The protease inhibitor, MG132, blocks maturation of the amyloid precursor protein Swedish mutant preventing cleavage by beta-Secretase.

Abstract excerpt

Amyloid (Abeta) peptides found aggregated into plaques in Alzheimer's disease are derived from the sequential cleavage of the amyloid precursor protein (APP) first by beta- and then by gamma-secretases. Peptide aldehydes, which inhibit cysteine proteases and proteasomes, reportedly block Abeta peptide secretion by interfering with gamma-secretase cleavage. Using a novel, specific, and sensitive enzyme-linked...

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