Cited by 282Alzheimer's disease research and treatmentsNeuroinflammation and Neurodegeneration MechanismsCerebrospinal fluid and hydrocephalus

The DOI matches its Crossref record; 39 of the 40 references it cites were found in a registry or an index, and 1 are not checked yet.

Neuronal Clearance of Amyloid-β by Endocytic Receptor LRP1

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Abstract

Alzheimer's disease (AD) is the most prevalent form of dementia in the elderly population. Accumulation, aggregation, and deposition of amyloid-β (Aβ) peptides generated through proteolytic cleavage of amyloid precursor protein (APP) are likely initiating events in the pathogenesis of AD. While Aβ production is accelerated in familial AD, increasing evidence indicates that impaired clearance of Aβ is responsible for late-onset AD. Because Aβ is mainly generated in neurons, these cells are predicted to have the highest risk of encountering Aβ among all cell types in the brain. However, it is still unclear whether they are also involved in Aβ clearance. Here we show that receptor-mediated endocytosis in neurons by the low-density lipoprotein receptor-related protein 1 (LRP1) plays a critical role in brain Aβ clearance. LRP1 is known to be an endocytic receptor for multiple ligands including Aβ. Conditional knock-out of Lrp1 in mouse forebrain neurons leads to increased brain Aβ levels and exacerbated amyloid plaque deposition selectively in the cortex of amyloid model APP/PS1 mice without affecting Aβ production.In vivo microdialysis studies demonstrated that Aβ clearance in brain interstitial fluid is impaired in neuronal Lrp1 knock-out mice. Because the neuronal LRP1-deletion did not affect the mRNA levels of major Aβ degrading enzymes, neprilysin and insulin-degrading enzyme, the disturbed Aβ clearance is likely due to the suppression of LRP1-mediated neuronal Aβ uptake and degradation. Together, our results demonstrate that LRP1 plays an important role in receptor-mediated clearance of Aβ and indicate that neurons not only produce but also clear Aβ.

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Crossref · 10.1523/jneurosci.3487-13.2013

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Metadata

Authors
Kanekiyo, T., Cirrito, J. R., Liu, C.-C., Shinohara, M., Li, J., Schuler, D. R., Shinohara, M., Holtzman, D. M., & Bu, G.
Affiliations
  • Mayo Clinic (US)
  • Washington University in St. Louis (US)
Venue
The Journal of Neuroscience
Published
2013-12-04
Volume
33
Issue
49
Pages
19276-19283
ISSN
  • 0270-6474 (ISSN-L)
  • 1529-2401
OpenAlex
W2084969119
Cited by
280
References
40
Citations by year
2026: 16 · 2025: 28 · 2024: 25 · 2023: 20 · 2022: 14 · 2021: 24 · 2020: 29 · 2019: 24 · 2018: 19 · 2017: 20 · 2016: 21 · 2015: 23 · 2014: 17
FWCI
14.16
Type
journal article
Language
en
Open access
Locations
  • Journal of Neuroscience (publishedVersion, cc-by-nc-sa)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • Digital Commons@Becker (Washington University School of Medicine) (submittedVersion)
  • Rare & Special e-Zone (The Hong Kong University of Science and Technology) (submittedVersion)
Funders
  • National Institutes of Health
  • National Institute on Aging (P01AG030128, P50‐AG16574, R01AG027924, R37AG13956, R01AG042513, RF1AG046205, R01AG046205, R37AG013956, R01AG035355, P50AG016574)
  • National Institute of Neurological Disorders and Stroke (P01NS074969)
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Alzheimer's disease research and treatments
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
  • Health Sciences › Medicine › Clinical Neurology › Cerebrospinal fluid and hydrocephalus
Keywords
amyloid-beta clearance, LRP1, Alzheimer's disease, receptor-mediated endocytosis, neurons, amyloid plaques, APP/PS1 mice, brain interstitial fluid, neprilysin, insulin-degrading enzyme, amyloid precursor protein, conditional knockout mice
MeSH terms
Animals, Cerebral Cortex, Enzyme-Linked Immunosorbent Assay, Hippocampus, Humans, Image Processing, Computer-Assisted, Immunohistochemistry, Neurons, Receptors, LDL, RNA, Messenger, Blotting, Western, Polymerase Chain Reaction, Amyloid beta-Peptides, Mice, Knockout, Microscopy, Confocal, Transport Vesicles, Tumor Suppressor Proteins, Low Density Lipoprotein Receptor-Related Protein-1, RNA, Small Interfering, Mice

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