Cited by 2,012Alzheimer's disease research and treatmentsNeuroinflammation and Neurodegeneration MechanismsDementia and Cognitive Impairment Research

Peripherally administered antibodies against amyloid β-peptide enter the central nervous system and reduce pathology in a mouse model of Alzheimer disease

Bard, Frédérique, Cannon, Catherine, Barbour, Robin, Burke, Rae-Lyn, Games, Dora, Grajeda, Henry, Guido, Teresa, Hu, Kang +15 more·2000·Nature Medicine

Abstract

One hallmark of Alzheimer disease is the accumulation of amyloid beta-peptide in the brain and its deposition as plaques. Mice transgenic for an amyloid beta precursor protein (APP) mini-gene driven by a platelet-derived (PD) growth factor promoter (PDAPP mice), which overexpress one of the disease-linked mutant forms of the human amyloid precursor protein, show many of the pathological features of Alzheimer disease, including extensive deposition of extracellular amyloid plaques, astrocytosis and neuritic dystrophy. Active immunization of PDAPP mice with human amyloid beta-peptide reduces plaque burden and its associated pathologies. Several hypotheses have been proposed regarding the mechanism of this response. Here we report that peripheral administration of antibodies against amyloid beta-peptide, was sufficient to reduce amyloid burden. Despite their relatively modest serum levels, the passively administered antibodies were able to enter the central nervous system, decorate plaques and induce clearance of preexisting amyloid. When examined in an ex vivo assay with sections of PDAPP or Alzheimer disease brain tissue, antibodies against amyloid beta-peptide triggered microglial cells to clear plaques through Fc receptor-mediated phagocytosis and subsequent peptide degradation. These results indicate that antibodies can cross the blood-brain barrier to act directly in the central nervous system and should be considered as a therapeutic approach for the treatment of Alzheimer disease and other neurological disorders.

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Crossref · 10.1038/78682

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  • Anti-apoE antibody might modulate similar inflammatory responses, consistent with the effect of certain anti-Aβ antibodies.

    “This finding suggests that anti-apoE antibody might modulate similar inflammatory responses, which is consistent with the effect of certain anti-Aβ antibodies (Bard et al., 2000; Wilcock et al., 2004).”
  • Recruitment and activation of microglia around plaques and subsequent Aβ degradation/clearance have been proposed as one of the mechanisms by which Aβ immunotherapy decreases amyloid levels.

    “Recruitment and activation of microglia around plaques and subsequent Aβ degradation/clearance have been proposed as one of the mechanisms by which Aβ immunotherapy decreases amyloid levels (Bard et al., 2000; Koenigsknecht-Talboo et al., 2008; Wang et al., 2011).”
  • Microglial-mediated phagocytosis is one of the major mechanisms for removal of plaques in response to some anti-Aβ antibodies.

    “One of the major mechanisms for removal of the plaques in response to some anti-A␤ antibodies is microglial-mediated phagocytosis (Bard et al., 2000;Demattos et al., 2012).”
  • 10D5 mAb is known to penetrate the blood-brain-barrier (BBB) and directly binds to deposited Aβ triggering microglial cells to clear Aβ plaques through Fc receptor-mediated phagocytosis.

    “We used mAb 10D5 direct against Aβ3–7 epitope [10], which is known to penetrate the blood–brain-barrier (BBB) and directly binds to deposited Aβ triggering microglial cells to clear Aβ plaques through Fc receptor-mediated phagocytosis [9].”
  • The dose of 10D5 mAb used in this study was previously shown to be effective in removing Aβ plaques in PDAPP AD Tg mice expressing wild type murine apoE.

    “The dose of 10D5 mAb used in this study was previously shown to be effective in removing Aβ plaques in PDAPP AD Tg mice expressing wild type murine apoE [9, 10, 22].”

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Authors
Bard, F., Cannon, C., Barbour, R., Burke, R.-L., Games, D., Grajeda, H., Guido, T., Hu, K., Huang, J., Johnson-Wood, K., Khan, K., Kholodenko, D., Lee, M., Lieberburg, I., Motter, R., Nguyen, M., Soriano, F., Vasquez, N., Weiss, K., Welch, B., Seubert, P., Schenk, D., & Yednock, T.
Affiliations
Elan Pharmaceuticals, Inc. (Ireland) (IE)
Corresponding author
Bard, Frédérique
Venue
Nature Medicine
Published
2000-08
Volume
6
Issue
8
Pages
916-919
ISSN
  • 1078-8956 (ISSN-L)
  • 1546-170X
OpenAlex
W1567490604
Cited by
2,012
References
11
Citations by year
2026: 23 · 2025: 36 · 2024: 38 · 2023: 41 · 2022: 49 · 2021: 32 · 2020: 73 · 2019: 46 · 2018: 41 · 2017: 48 · 2016: 76 · 2015: 66 · 2014: 107 · 2013: 89 · 2012: 107
FWCI
67.08
Type
journal article
Language
en
Open access
closed
Locations
  • Nature Medicine (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
  • Health Sciences › Medicine › Psychiatry and Mental health › Dementia and Cognitive Impairment Research
Keywords
Alzheimer's disease, amyloid-beta, passive immunization, anti-amyloid antibodies, blood-brain barrier penetration, amyloid plaques, microglial phagocytosis, Fc receptors, PDAPP mice, amyloid precursor protein, plaque clearance, antibody therapy
MeSH terms
Alzheimer Disease, Animals, Antibodies, Disease Models, Animal, Humans, Immunization, Mice, Transgenic, Phagocytosis, Amyloid beta-Peptides, Mice, Plaque, Amyloid, In Vitro Techniques

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