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Alzheimer's Research & Therapy
Published in: Alzheimer's Research & Therapy 1/2018

Open Access 01-12-2018 | Research

Anti-β-sheet conformation monoclonal antibody reduces tau and Aβ oligomer pathology in an Alzheimer’s disease model

Authors: Fernando Goñi, Mitchell Martá-Ariza, Krystal Herline, Daniel Peyser, Allal Boutajangout, Pankaj Mehta, Eleanor Drummond, Frances Prelli, Thomas Wisniewski

Published in: Alzheimer's Research & Therapy | Issue 1/2018

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Abstract

Background

Oligomeric forms of amyloid-β (Aβ) and tau are increasing being recognized as key toxins in the pathogenesis of Alzheimer’s disease (AD).

Methods

We developed a novel monoclonal antibody (mAb), GW-23B7, that recognizes β-sheet secondary structure on pathological oligomers of neurodegenerative diseases.

Results

The pentameric immunoglobulin M kappa chain (IgMκp) we developed specifically distinguishes intra- and extracellular pathology in human AD brains. Purified GW-23B7 showed a dissociation constant in the nanomolar range for oligomeric Aβ and did not bind monomeric Aβ. In enzyme-linked immunosorbent assays, it recognized oligomeric forms of both Aβ and hyperphosphorylated tau. Aged triple-transgenic AD mice with both Aβ and tau pathology infused intraperitoneally for 2 months showed IgMκp in the soluble brain homogenate, peaking at 24 h postinoculation. Treated mice exhibited significant cognitive rescue on radial arm maze testing compared with vehicle control-infused mice. Immunohistochemically, treatment resulted in a significant decrease of extracellular pathology. Biochemically, treatment resulted in significant reductions of oligomeric forms of Aβ and tau.

Conclusions

These results suggest that GW-23B7, an anti-β-sheet conformational mAb humanized for clinical trials, may be an effective therapeutic agent for human AD.
Appendix
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Metadata
Title
Anti-β-sheet conformation monoclonal antibody reduces tau and Aβ oligomer pathology in an Alzheimer’s disease model
Authors
Fernando Goñi
Mitchell Martá-Ariza
Krystal Herline
Daniel Peyser
Allal Boutajangout
Pankaj Mehta
Eleanor Drummond
Frances Prelli
Thomas Wisniewski
Publication date
01-12-2018
Publisher
BioMed Central
Published in
Alzheimer's Research & Therapy / Issue 1/2018
Electronic ISSN: 1758-9193
DOI
https://doi.org/10.1186/s13195-018-0337-3

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