Cited by 268Alzheimer's disease research and treatmentsNeuroinflammation and Neurodegeneration MechanismsNeuroscience and Neuropharmacology Research

Neuronal LRP1 knockout in adult mice leads to impaired brain lipid metabolism and progressive, age-dependent synapse loss and neurodegeneration

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Liu, Qiang, Trotter, Justin, Zhang, Juan, Peters, Melinda M., Cheng, Hua, Bao, Jianxin, Han, Xianlin, Weeber, Edwin J. +1 more·2010·The Journal of Neuroscience

Abstract

The vast majority of Alzheimer's disease (AD) cases are late onset with progressive synapse loss and neurodegeneration. Although the amyloid hypothesis has generated great insights into the disease mechanism, several lines of evidence indicate that other risk factors might precondition the brain to amyloid toxicity. Here, we show that the deletion of a major lipoprotein receptor, low-density lipoprotein receptor-related protein 1 (LRP1), in forebrain neurons in mice leads to a global defect in brain lipid metabolism characterized by decreased brain levels of cholesterol, sulfatide, galactosylceramide, and triglyceride. These lipid deficits correlate with progressive, age-dependent dendritic spine degeneration, synapse loss, neuroinflammation, memory loss, and eventual neurodegeneration. We further show that the levels of glutamate receptor subunits NMDA receptor 1 and Glu receptor 1 are selectively reduced in LRP1 forebrain knock-out mice and in LRP1 knockdown neurons, which is partially rescued by restoring neuronal cholesterol. Together, these studies support a critical role for LRP1 in maintaining brain lipid homeostasis and associated synaptic and neuronal integrity, and provide important insights into the pathophysiological mechanisms in AD.

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Crossref · 10.1523/jneurosci.4067-10.2010

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  1. Tsien JZ Chen DF Gerber D Tom C Mercer EH Anderson DJ Mayford M Kandel ER Tonegawa S 1996 Subregion- and cell type-restricted gene knockout in mouse brain Cell 87 1317 1326 8980237

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Authors
Liu, Q., Trotter, J., Zhang, J., Peters, M. M., Cheng, H., Bao, J., Han, X., Weeber, E. J., & Bu, G.
Affiliations
  • Washington University in St. Louis (US)
  • University of South Florida (US)
Venue
The Journal of Neuroscience
Published
2010-12-15
Volume
30
Issue
50
Pages
17068-17078
ISSN
  • 0270-6474 (ISSN-L)
  • 1529-2401
OpenAlex
W2032607393
Cited by
268
References
53
Citations by year
2026: 9 · 2025: 25 · 2024: 17 · 2023: 29 · 2022: 34 · 2021: 14 · 2020: 22 · 2019: 14 · 2018: 7 · 2017: 19 · 2016: 14 · 2015: 17 · 2014: 18 · 2013: 13 · 2012: 9
FWCI
6.28
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
  • Alzheimer's Association
  • American Health Assistance Foundation
  • Hope Center for Neurological Disorders
  • National Institutes of Health
  • National Institute on Aging (P01AG030128, R01AG031675, R01AG027924, R01 AG02792405, R01AG031784, R01AG035355)
  • National Institute on Deafness and Other Communication Disorders (R21DC010489)
Topics
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
Keywords
LRP1, Alzheimer's disease, brain lipid metabolism, synaptic loss, neurodegeneration, neuroinflammation, memory loss, NMDA receptor 1, GluR1, lipoprotein receptors, forebrain neurons, age-related neurodegeneration
MeSH terms
Age Factors, Amnesia, Animals, Hippocampus, Nerve Degeneration, Neurons, Synapses, Receptors, N-Methyl-D-Aspartate, Prosencephalon, Receptors, AMPA, Mice, Knockout, Cell Culture Techniques, Low Density Lipoprotein Receptor-Related Protein-1, Dendritic Spines, Lipid Metabolism, Mice

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