Cited by 281Alzheimer's disease research and treatmentsBarrier Structure and Function StudiesNeuroinflammation and Neurodegeneration Mechanisms

The low-density lipoprotein receptor-related protein 1 and amyloid-β clearance in Alzheimer’s disease

Open access
Kanekiyo, Takahisa, Bu, Guojun·2014·Frontiers in Aging Neuroscience

Abstract

Accumulation and aggregation of amyloid-β (Aβ) peptides in the brain trigger the development of progressive neurodegeneration and dementia associated with Alzheimer's disease (AD). Perturbation in Aβ clearance, rather than Aβ production, is likely the cause of sporadic, late-onset AD, which accounts for the majority of AD cases. Since cellular uptake and subsequent degradation constitute a major Aβ clearance pathway, the receptor-mediated endocytosis of Aβ has been intensely investigated. Among Aβ receptors, the low-density lipoprotein receptor-related protein 1 (LRP1) is one of the most studied receptors. LRP1 is a large endocytic receptor for more than 40 ligands, including apolipoprotein E, α2-macroglobulin and Aβ. Emerging in vitro and in vivo evidence demonstrates that LRP1 is critically involved in brain Aβ clearance. LRP1 is highly expressed in a variety of cell types in the brain including neurons, vascular cells and glial cells, where LRP1 functions to maintain brain homeostasis and control Aβ metabolism. LRP1-mediated endocytosis regulates cellular Aβ uptake by binding to Aβ either directly or indirectly through its co-receptors or ligands. Furthermore, LRP1 regulates several signaling pathways, which also likely influences Aβ endocytic pathways. In this review, we discuss how LRP1 regulates the brain Aβ clearance and how this unique endocytic receptor participates in AD pathogenesis. Understanding of the mechanisms underlying LRP1-mediated Aβ clearance should enable the rational design of novel diagnostic and therapeutic strategies for AD.

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Crossref · 10.3389/fnagi.2014.00093

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  • APOE binding is integral to some processes involving lipoprotein receptors, including Aβ aggregation and neuronal uptake of extracellular tau.

    “Studies indicate that APOE binding is integral to some of these processes [16–20] with differences in APOE isoform-specific receptor binding affinity and lipid interactions affecting neuroinflammation, tau pathology, and amyloid plaque dynamics [21–24].”

    From APOE Christchurch enhances a disease-associated microglial response to plaque but suppresses response to tau pathology (2025) · cites this paper as [18]

    The Summary and Perspective (page not provided) identifies apoE as an LRP1 ligand that affects Aβ aggregation and cellular uptake. The section on the relationship among LRP1, apoE, and Aβ also discusses apoE binding and receptor-dependent Aβ uptake. The passages found do not address neuronal uptake of extracellular tau. (LLM, conf=0.87)

    Experimental — accuracy not yet measured
  • APOE and APOE3Ch influence both Aβ and tau pathology, either directly or through downstream effects such as neuroinflammation.

    “Collectively, these recent findings underscore the influence of APOE and APOE3Ch on both Aβ and tau pathology, either directly or through downstream effects such as neuroinflammation.”

    From APOE Christchurch enhances a disease-associated microglial response to plaque but suppresses response to tau pathology (2025) · cites this paper as [18]

    The section “Relationship among LRP1, apoE, and Aβ in AD” links apoE isoforms to Aβ aggregation and uptake, supporting that part of the claim. Our copy does not address APOE3Ch or an effect of APOE on tau pathology; its discussion of inflammation concerns LRP1, not an APOE-to-tau pathway. Page numbers are unavailable in our copy. (LLM, conf=0.89)

    Experimental — accuracy not yet measured
  • Receptors such as LRP1 can regulate APP endocytosis and amyloidogenic processing while also mediating cellular uptake and clearance of extracellular Aβ.

    “Receptors such as LRP1 can regulate APP endocytosis and amyloidogenic processing while also mediating cellular uptake and clearance of extracellular Aβ (Kanekiyo and Bu, 2014; Kanekiyo et al., 2013; Van Gool et al., 2019).”

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Authors
Kanekiyo, T., & Bu, G.
Affiliations
Mayo Clinic (US)
Corresponding author
Kanekiyo, Takahisa
Venue
Frontiers in Aging Neuroscience
Published
2014-05-20
Volume
6
Pages
93-93
ISSN
1663-4365 (ISSN-L)
OpenAlex
W2003708432
Cited by
281
References
156
Citations by year
2026: 23 · 2025: 28 · 2024: 25 · 2023: 34 · 2022: 25 · 2021: 27 · 2020: 18 · 2019: 20 · 2018: 17 · 2017: 23 · 2016: 20 · 2015: 17 · 2014: 3
FWCI
2.46
Type
journal article
Language
en
Open access
Licence
cc-by
Locations
  • Frontiers in Aging Neuroscience (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
  • Rare & Special e-Zone (The Hong Kong University of Science and Technology) (submittedVersion)
Funders
  • Alzheimer's Association
  • National Institutes of Health
  • National Institute on Aging (P01AG030128, R01AG027924, RF1AG046205, R01AG046205, R01AG035355)
  • National Institute of Neurological Disorders and Stroke (P01NS074969)
Topics
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Life Sciences › Neuroscience › Neurology › Barrier Structure and Function Studies
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
Keywords
LRP1, amyloid-beta clearance, Alzheimer's disease, receptor-mediated endocytosis, co-receptors, apolipoprotein E, alpha2-macroglobulin, amyloid-beta aggregation, neurodegeneration, glial cells, vascular cells, signaling pathways

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