Cited by 87Alzheimer's disease research and treatmentsDementia and Cognitive Impairment ResearchNeuroinflammation and Neurodegeneration Mechanisms

Acute targeting of pre-amyloid seeds in transgenic mice reduces Alzheimer-like pathology later in life

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Uhlmann, Ruth E., Rother, Christine, Rasmussen, Jay, Schelle, Juliane, Bergmann, Carina, Ullrich Gavilanes, Emily M., Fritschi, Sarah K., Buehler, Anika +18 more·2020·Nature Neuroscience

Abstract

Amyloid-β (Aβ) deposits are a relatively late consequence of Aβ aggregation in Alzheimer's disease. When pathogenic Aβ seeds begin to form, propagate and spread is not known, nor are they biochemically defined. We tested various antibodies for their ability to neutralize Aβ seeds before Aβ deposition becomes detectable in Aβ precursor protein-transgenic mice. We also characterized the different antibody recognition profiles using immunoprecipitation of size-fractionated, native, mouse and human brain-derived Aβ assemblies. At least one antibody, aducanumab, after acute administration at the pre-amyloid stage, led to a significant reduction of Aβ deposition and downstream pathologies 6 months later. This demonstrates that therapeutically targetable pathogenic Aβ seeds already exist during the lag phase of protein aggregation in the brain. Thus, the preclinical phase of Alzheimer's disease-currently defined as Aβ deposition without clinical symptoms-may be a relatively late manifestation of a much earlier pathogenic seed formation and propagation that currently escapes detection in vivo.

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Crossref · 10.1038/s41593-020-00737-w

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  • CSF p-tau231 becomes abnormal first and seems the principal p-tau candidate to identify early Aβ seeds in the pre-amyloid phase, which is currently seen as the optimal period for therapeutic intervention.

    “Specifically, CSF p-tau231 becomes abnormal first and seems the principal p-tau candidate to identify early Aβ seeds in the recently proposed “pre-amyloid phase”,32 which is currently seen as the optimal period for therapeutic intervention.”

    From Cerebrospinal fluid p-tau231 as an early indicator of emerging pathology in Alzheimer's disease (2022) · cites this paper as [32]

    The Abstract and Discussion describe a pre-amyloid phase with targetable Aβ seeds and propose intervention before detectable deposition, based on a mouse model. They do not establish that CSF p-tau231 becomes abnormal first or is the principal marker of those seeds; the Discussion also says the efficacy of early seed removal in humans has not been established. (LLM, conf=0.88)

    Experimental — accuracy not yet measured
  • Early removal of Aβ seeds, before Aβ deposition becomes detectable, led to a significant reduction of Aβ accumulation and downstream pathologies in transgenic mice.

    “a recent study in transgenic mice suggests that early removal of Aβ seeds, before Aβ deposition becomes detectable, led to a significant reduction of Aβ accumulation and downstream pathologies.32”
  • Increases in CSF p-tau231 are related to early Aβ seeds and could act as a key biomarker for the pre-amyloid phase of AD, which occurs before the Aβ deposition threshold.

    “Thus, one could propose that increases in CSF p-tau231 are related to early Aβ seeds and could act as a key biomarker for the recently described “pre-amyloid phase” of AD, which occurs before Aβ deposition threshold.32”
  • mAducanumab treatment induces overexpression of genes in synapse organization, regulation of membrane potential, and neurotransmitter transport pathways in aged APPswe mouse hippocampus.

    “Treatment with mAducanumab induced an overexpression of genes involved in synapse organization (GO:0050808), regulation of membrane potential (GO:0042391) and neurotransmitter transport (GO:0006836; Extended Data Fig. 8k) pathways, which might be attributed to the enhanced clearance of soluble Aβ seeds28 from the brain of aged APPswe mice.”

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Authors
Uhlmann, R. E., Rother, C., Rasmussen, J., Schelle, J., Bergmann, C., Ullrich Gavilanes, E. M., Fritschi, S. K., Buehler, A., Baumann, F., Skodras, A., Al-Shaana, R., Beschorner, N., Ye, L., Kaeser, S. A., Obermüller, U., Christensen, S., Kartberg, F., Stavenhagen, J. B., Rahfeld, J.-U., Cynis, H., Qian, F., Weinreb, P. H., Bussiere, T., Walker, L. C., Staufenbiel, M., & Jucker, M.
Affiliations
  • German Center for Neurodegenerative Diseases (DE)
  • Hertie Institute for Clinical Brain Research (DE)
  • Lundbeck (Denmark) (DK)
  • Fraunhofer Institute for Cell Therapy and Immunology (DE)
  • Biogen (United States) (US)
  • Emory University (US)
Corresponding author
Jucker, Mathias
Venue
Nature Neuroscience
Published
2020-11-16
Volume
23
Issue
12
Pages
1580-1588
ISSN
  • 1097-6256 (ISSN-L)
  • 1546-1726
OpenAlex
W3101507523
Cited by
87
References
60
Citations by year
2026: 7 · 2025: 12 · 2024: 13 · 2023: 14 · 2022: 22 · 2021: 17 · 2020: 2
FWCI
8.27
Type
journal article
Language
en
Open access
Locations
  • Nature Neuroscience (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
  • Publikationsdatenbank der Fraunhofer-Gesellschaft (Fraunhofer-Gesellschaft) (submittedVersion)
  • DZNE Pub (submittedVersion)
  • Fraunhofer-Publica (Fraunhofer-Gesellschaft) (submittedVersion)
Funders
  • National Institutes of Health (P51OD011132)
  • National Institute on Aging (P50AG025688, P30AG066511)
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 aggregation, aducanumab, antibody therapy, preclinical Alzheimer's disease, transgenic mice, amyloid precursor protein, protein aggregation, amyloid-beta deposition
MeSH terms
Aged, Aged, 80 and over, Alzheimer Disease, Animals, Brain Chemistry, Humans, Male, Mice, Inbred C57BL, Mice, Transgenic, Middle Aged, Tissue Extracts, Amyloid beta-Peptides, Amyloid beta-Protein Precursor, Neurofilament Proteins, Antibodies, Blocking, Mice, Plaque, Amyloid, Antibodies, Monoclonal, Humanized

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