Abstract
Neprilysin is a zinc metalloendopeptidase with relatively broad substrate specificity. The enzyme is localized to the plasma membrane of cells where it can function to degrade extracellular peptides. Structural studies show that neprilysin preferentially cleaves peptides on the amino side of hydrophobic amino acids. Neprilysin has been implicated in the catabolism of amyloid β peptides in the brain and as such has received considerable attention, particularly as a therapeutic target for Alzheimers disease. An inverse relationship between neprilysin levels and amyloid β peptide levels and between neprilysin levels and amyloid plaque formation has been observed in human brain. Neprilysin levels decline with aging in the temporal and frontal cortex possibly contributing to higher amyloid β peptide levels. A number of studies have shown that increasing neprilysin levels in the brain leads to a decrease in brain amyloid β peptide levels. Most recently a potential relationship between amyloid β peptide synthesis from the amyloid precursor protein and neprilysin activity has been proposed.
Current Alzheimer Research
Title: Neprilysin and Amyloid Beta Peptide Degradation
Volume: 5 Issue: 2
Author(s): Louis B. Hersh and David W. Rodgers
Affiliation:
Abstract: Neprilysin is a zinc metalloendopeptidase with relatively broad substrate specificity. The enzyme is localized to the plasma membrane of cells where it can function to degrade extracellular peptides. Structural studies show that neprilysin preferentially cleaves peptides on the amino side of hydrophobic amino acids. Neprilysin has been implicated in the catabolism of amyloid β peptides in the brain and as such has received considerable attention, particularly as a therapeutic target for Alzheimers disease. An inverse relationship between neprilysin levels and amyloid β peptide levels and between neprilysin levels and amyloid plaque formation has been observed in human brain. Neprilysin levels decline with aging in the temporal and frontal cortex possibly contributing to higher amyloid β peptide levels. A number of studies have shown that increasing neprilysin levels in the brain leads to a decrease in brain amyloid β peptide levels. Most recently a potential relationship between amyloid β peptide synthesis from the amyloid precursor protein and neprilysin activity has been proposed.
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Cite this article as:
Hersh B. Louis and Rodgers W. David, Neprilysin and Amyloid Beta Peptide Degradation, Current Alzheimer Research 2008; 5 (2) . https://dx.doi.org/10.2174/156720508783954703
DOI https://dx.doi.org/10.2174/156720508783954703 |
Print ISSN 1567-2050 |
Publisher Name Bentham Science Publisher |
Online ISSN 1875-5828 |
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