Cited by 571Alzheimer's disease research and treatmentsNeuroinflammation and Neurodegeneration MechanismsDementia and Cognitive Impairment Research

Apolipoprotein E promotes astrocyte colocalization and degradation of deposited amyloid-β peptides

Koistinaho, Milla, Lin, Suizhen, Wu, Xin, Esterman, Michail, Koger, Deanna, Hanson, Jeffrey, Higgs, Richard, Liu, Feng +3 more·2004·Nature Medicine

Abstract

We have previously shown that apolipoprotein E (Apoe) promotes the formation of amyloid in brain and that astrocyte-specific expression of APOE markedly affects the deposition of amyloid-beta peptides (Abeta) in a mouse model of Alzheimer disease. Given the capacity of astrocytes to degrade Abeta, we investigated the potential role of Apoe in this astrocyte-mediated degradation. In contrast to cultured adult wild-type mouse astrocytes, adult Apoe(-/-) astrocytes do not degrade Abeta present in Abeta plaque-bearing brain sections in vitro. Coincubation with antibodies to either Apoe or Abeta, or with RAP, an antagonist of the low-density lipoprotein receptor family, effectively blocks Abeta degradation by astrocytes. Phase-contrast and confocal microscopy show that Apoe(-/-) astrocytes do not respond to or internalize Abeta deposits to the same extent as do wild-type astrocytes. Thus, Apoe seems to be important in the degradation and clearance of deposited Abeta species by astrocytes, a process that may be impaired in Alzheimer disease.

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Crossref · 10.1038/nm1058

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Authors
Koistinaho, M., Lin, S., Wu, X., Esterman, M., Koger, D., Hanson, J., Higgs, R., Liu, F., Malkani, S., Bales, K. R., & Paul, S. M.
Affiliations
Eli Lilly (United States) (US)
Corresponding author
Paul, Steven M
Venue
Nature Medicine
Published
2004-06-13
Volume
10
Issue
7
Pages
719-726
ISSN
  • 1078-8956 (ISSN-L)
  • 1546-170X
OpenAlex
W2171311951
Cited by
571
References
40
Citations by year
2026: 13 · 2025: 20 · 2024: 15 · 2023: 20 · 2022: 29 · 2021: 23 · 2020: 34 · 2019: 31 · 2018: 26 · 2017: 29 · 2016: 32 · 2015: 29 · 2014: 36 · 2013: 30 · 2012: 38
FWCI
13.59
Type
journal article
Language
en
Open access
closed
Locations
  • Nature Medicine (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Suomen Kulttuurirahasto
  • Saastamoisen säätiö
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
apolipoprotein E, amyloid-beta, astrocytes, amyloid beta degradation, Alzheimer's disease, amyloid plaques, rap, low-density lipoprotein receptor family, ApoE-deficient mice
MeSH terms
Animals, Apolipoproteins E, Astrocytes, Cell Aggregation, Cell Survival, Cells, Cultured, Mice, Inbred C57BL, Amyloid beta-Peptides, Low Density Lipoprotein Receptor-Related Protein-1, Mice

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