Cited by 103Alzheimer's disease research and treatmentsDementia and Cognitive Impairment ResearchNeuroinflammation and Neurodegeneration Mechanisms

Identification of Low Molecular Weight Pyroglutamate Aβ Oligomers in Alzheimer Disease

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Wirths, Oliver, Erck, Christian, Martens, Henrik, Harmeier, Anja, Geumann, Constanze, Jawhar, Sadim, Kumar, Sathish, Multhaup, Gerd +7 more·2010·Journal of Biological Chemistry

Abstract

N-terminally truncated Aβ peptides starting with pyroglutamate (AβpE3) represent a major fraction of all Aβ peptides in the brain of Alzheimer disease (AD) patients. AβpE3 has a higher aggregation propensity and stability and shows increased toxicity compared with full-length Aβ. In the present work, we generated a novel monoclonal antibody (9D5) that selectively recognizes oligomeric assemblies of AβpE3 and studied the potential involvement of oligomeric AβpE3 in vivo using transgenic mouse models as well as human brains from sporadic and familial AD cases. 9D5 showed an unusual staining pattern with almost nondetectable plaques in sporadic AD patients and non-demented controls. Interestingly, in sporadic and familial AD cases prominent intraneuronal and blood vessel staining was observed. Using a novel sandwich ELISA significantly decreased levels of oligomers in plasma samples from patients with AD compared with healthy controls were identified. Moreover, passive immunization of 5XFAD mice with 9D5 significantly reduced overall Aβ plaque load and AβpE3 levels, and normalized behavioral deficits. These data indicate that 9D5 is a therapeutically and diagnostically effective monoclonal antibody targeting low molecular weight AβpE3 oligomers.

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Crossref · 10.1074/jbc.m110.178707

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  • Plaque deposition requires BACE1 activity.

    “verified that plaque deposition requires BACE1 activity, as previously shown [17-20].”

    From Neuron loss in the 5XFAD mouse model of Alzheimer’s disease correlates with intraneuronal Aβ42 accumulation and Caspase-3 activation (2013) · cites this paper as [18]

    The Discussion (Figure 4; page unavailable) reports reduced plaque load after 9D5 antibody treatment, but does not address whether plaque deposition requires BACE1 activity. Searches for BACE1 and beta-secretase activity found no passage in our copy that establishes that requirement. (LLM, conf=0.76)

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  • 5XFAD; BACE1−/− mice express the APP transgene but do not generate Aβ.

    “Because 5XFAD; BACE1−/− mice express the APP transgene but do not generate Aβ [18], these results strongly support the conclusion that our anti-Aβ42-selective antibody does indeed detect intraneuronal Aβ42 rather than full-length APP or APP CTFs.”

    From Neuron loss in the 5XFAD mouse model of Alzheimer’s disease correlates with intraneuronal Aβ42 accumulation and Caspase-3 activation (2013) · cites this paper as [18]

    The Experimental Procedures describe 5XFAD mice, and the mouse-model results report Aβ staining in them, but neither passage addresses 5XFAD; BACE1−/− mice. Searches for BACE1 knockout and loss of Aβ production found no passage establishing that the double-mutant mice retain the APP transgene but do not generate Aβ. Page numbers were not available in our copy. (LLM, conf=0.73)

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Authors
Wirths, O., Erck, C., Martens, H., Harmeier, A., Geumann, C., Jawhar, S., Kumar, S., Multhaup, G., Walter, J., Ingelsson, M., Degerman-Gunnarsson, M., Kalimo, H., Huitinga, I., Lannfelt, L., & Bayer, T. A.
Affiliations
  • Universitätsmedizin Göttingen (DE)
  • Institute for Small Business Economics (DE)
  • Freie Universität Berlin (DE)
  • University of Bonn (DE)
  • Uppsala University (SE)
  • University of Helsinki (FI)
  • Netherlands Institute for Neuroscience (NL)
Corresponding author
Bayer, Thomas A.
Venue
Journal of Biological Chemistry
Publisher
Elsevier BV
Published
2010-12
Volume
285
Issue
53
Pages
41517-41524
ISSN
0021-9258 (ISSN-L)
OpenAlex
W1979818695
Cited by
103
References
51
Citations by year
2025: 4 · 2024: 5 · 2023: 4 · 2022: 1 · 2021: 4 · 2020: 6 · 2019: 6 · 2018: 4 · 2017: 9 · 2016: 9 · 2015: 5 · 2014: 11 · 2013: 12 · 2012: 16
FWCI
7.58
Type
journal article
Language
en
Open access
Locations
  • Journal of Biological Chemistry (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • Data Archiving and Networked Services (DANS) (submittedVersion)
  • GoeScholar The Publication Server of the Georg-August-Universität Göttingen (Georg-August-Universität Göttingen) (submittedVersion, cc-by)
  • KNAW Research Portal (The Royal Netherlands Academy of Arts and Sciences) (submittedVersion)
Funders
Fritz Thyssen Stiftung
Topics
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Health Sciences › Medicine › Psychiatry and Mental health › Dementia and Cognitive Impairment Research
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
Keywords
Alzheimer's disease, amyloid-beta, pyroglutamate amyloid-beta, amyloid-beta oligomers, antibody-based therapy, passive immunization, 5xFAD mice, amyloid plaques, sandwich ELISA, plasma biomarkers, familial Alzheimer's disease, sporadic Alzheimer's disease
MeSH terms
Alzheimer Disease, Amyloid, Animals, Behavior, Animal, Brain, Chromatography, Enzyme-Linked Immunosorbent Assay, Humans, Immunochemistry, Mice, Inbred C57BL, Mice, Transgenic, Molecular Weight, Pyrrolidonecarboxylic Acid, Protein Structure, Tertiary, Transgenes, Cell Line, Tumor, Mice

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