Cited by 485Neuroinflammation and Neurodegeneration MechanismsAlzheimer's disease research and treatmentsPhagocytosis and Immune Regulation

The DOI matches its Crossref record; 62 of the 62 references it cites were found in a registry or an index.

Microglia use TAM receptors to detect and engulf amyloid β plaques

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Abstract

Two microglial TAM receptor tyrosine kinases, Axl and Mer, have been linked to Alzheimer's disease, but their roles in disease have not been tested experimentally. We find that in Alzheimer's disease and its mouse models, induced expression of Axl and Mer in amyloid plaque-associated microglia was coupled to induced plaque decoration by the TAM ligand Gas6 and its co-ligand phosphatidylserine. In the APP/PS1 mouse model of Alzheimer's disease, genetic ablation of Axl and Mer resulted in microglia that were unable to normally detect, respond to, organize or phagocytose amyloid-β plaques. These major deficits notwithstanding, TAM-deficient APP/PS1 mice developed fewer dense-core plaques than APP/PS1 mice with normal microglia. Our findings reveal that the TAM system is an essential mediator of microglial recognition and engulfment of amyloid plaques and that TAM-driven microglial phagocytosis does not inhibit, but rather promotes, dense-core plaque development.

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Metadata

Authors
Huang, Y., Happonen, K. E., Burrola, P. G., O’Connor, C., Hah, N., Huang, L., Nimmerjahn, A., & Lemke, G.
Affiliations
Salk Institute for Biological Studies (US)
Corresponding author
Lemke, Greg
Venue
Nature Immunology
Published
2021-04-15
Volume
22
Issue
5
Pages
586-594
ISSN
  • 1529-2908 (ISSN-L)
  • 1529-2916
OpenAlex
W3152525961
Cited by
483
References
62
Citations by year
2026: 60 · 2025: 96 · 2024: 99 · 2023: 86 · 2022: 109 · 2021: 33
FWCI
32.65
Type
journal article
Language
en
Open access
Locations
  • Nature Immunology (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
  • eScholarship (California Digital Library) (submittedVersion)
Funders
U.S. Department of Health & Human Services | National Institutes of Health (AG060748, NS083038, NS108034, NS103522, AG062429, CA014195, OD023689)
Topics
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Alzheimer's disease research and treatments
  • Life Sciences › Immunology and Microbiology › Immunology › Phagocytosis and Immune Regulation
Keywords
microglia, TAM receptors, AXL, Mer, Alzheimer's disease, amyloid plaques, microglial phagocytosis, Gas6, phosphatidylserine, APP/PS1 mice, receptor tyrosine kinase
MeSH terms
Intravital Microscopy, c-Mer Tyrosine Kinase, RNA-Seq, Axl Receptor Tyrosine Kinase, Alzheimer Disease, Animals, Brain, Disease Models, Animal, Female, Humans, Male, Phagocytosis, Proto-Oncogene Proteins, Amyloid beta-Peptides, Amyloid beta-Protein Precursor, Microglia, Mice, Knockout, Microscopy, Confocal, Receptor Protein-Tyrosine Kinases, Microscopy, Fluorescence, Multiphoton, Mice, Presenilin-1, Single-Cell Analysis

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