Mattsson, N;
Rajendran, L;
Zetterberg, H;
Gustavsson, M;
Andreasson, U;
Olsson, M;
Brinkmalm, G;
... Portelius, E; + view all
(2012)
BACE1 inhibition induces a specific cerebrospinal fluid β-amyloid pattern that identifies drug effects in the central nervous system.
PLoS One
, 7
(2)
, Article e31084. 10.1371/journal.pone.0031084.
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Abstract
BACE1 is a key enzyme for amyloid-β (Aβ) production, and an attractive therapeutic target in Alzheimer's disease (AD). Here we report that BACE1 inhibitors have distinct effects on neuronal Aβ metabolism, inducing a unique pattern of secreted Aβ peptides, analyzed in cell media from amyloid precursor protein (APP) transfected cells and in cerebrospinal fluid (CSF) from dogs by immunoprecipitation-mass spectrometry, using several different BACE1 inhibitors. Besides the expected reductions in Aβ1-40 and Aβ1-42, treatment also changed the relative levels of several other Aβ isoforms. In particular Aβ1-34 decreased, while Aβ5-40 increased, and these changes were more sensitive to BACE1 inhibition than the changes in Aβ1-40 and Aβ1-42. The effects on Aβ5-40 indicate the presence of a BACE1 independent pathway of APP degradation. The described CSF Aβ pattern may be used as a pharmacodynamic fingerprint to detect biochemical effects of BACE1-therapies in clinical trials, which might accelerate development of novel therapies.
| Type: | Article |
|---|---|
| Title: | BACE1 inhibition induces a specific cerebrospinal fluid β-amyloid pattern that identifies drug effects in the central nervous system |
| Location: | United States |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1371/journal.pone.0031084 |
| Publisher version: | http://dx.doi.org/10.1371/journal.pone.0031084 |
| Language: | English |
| Additional information: | © 2012 Mattsson et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. PMCID: PMC3273469 |
| Keywords: | Amyloid Precursor Protein Secretases, Amyloid beta-Peptides, Amyloid beta-Protein Precursor, Animals, Aspartic Acid Endopeptidases, Cell Line, Central Nervous System, Cerebrospinal Fluid, Chromatography, Liquid, Dimethyl Sulfoxide, Dogs, Enzyme Inhibitors, Female, Humans, Immunoassay, Immunoprecipitation, Male, Mass Spectrometry, Tandem Mass Spectrometry |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > UCL Queen Square Institute of Neurology UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > UCL Queen Square Institute of Neurology > Neurodegenerative Diseases |
| URI: | https://discovery.ucl.ac.uk/id/eprint/1411983 |
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