Cited by 259Neuroinflammation and Neurodegeneration MechanismsAlzheimer's disease research and treatmentsDementia and Cognitive Impairment Research

APOE and TREM2 regulate amyloid-responsive microglia in Alzheimer’s disease

Open access
Nguyen, Aivi T., Wang, Kui, Hu, Gang, Wang, Xuran, Miao, Zhen, Azevedo, Joshua A., Suh, EunRan, Van Deerlin, Vivianna M. +4 more·2020·Acta Neuropathologica

Abstract

Beta-amyloid deposition is a defining feature of Alzheimer's disease (AD). How genetic risk factors, like APOE and TREM2, intersect with cellular responses to beta-amyloid in human tissues is not fully understood. Using single-nucleus RNA sequencing of postmortem human brain with varied APOE and TREM2 genotypes and neuropathology, we identified distinct microglia subpopulations, including a subpopulation of CD163-positive amyloid-responsive microglia (ARM) that are depleted in cases with APOE and TREM2 risk variants. We validated our single-nucleus RNA sequencing findings in an expanded cohort of AD cases, demonstrating that APOE and TREM2 risk variants are associated with a significant reduction in CD163-positive amyloid-responsive microglia. Our results showcase the diverse microglial response in AD and underscore how genetic risk factors influence cellular responses to underlying pathologies.

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Crossref · 10.1007/s00401-020-02200-3

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79 of 79 references verified0 citation errors · 0 not checkable

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  • MG-M4 possibly represents an alternative microglial activation module.

    “The trajectory of MG-M4, containing CD163 as a hub gene, was consistent with that of DAM-like module MG-M1, and was enriched for processes including phagocytosis, myeloid cell differentiation, and neutrophil activation (Figure 6D); therefore, it is possible that MG-M4 represents an alternative microglial activation module.55”
  • The trajectory of MG-M4 was consistent with that of DAM-like module MG-M1.

    “The trajectory of MG-M4, containing CD163 as a hub gene, was consistent with that of DAM-like module MG-M1, and was enriched for processes including phagocytosis, myeloid cell differentiation, and neutrophil activation (Figure 6D); therefore, it is possible that MG-M4 represents an alternative microglial activation module.55”

    From hdWGCNA identifies co-expression networks in high-dimensional transcriptomics data (2023) · cites this paper as [55]

    The Results section on branched microglial transcriptional trajectory describes homeostatic microglia diverging into motile microglia or amyloid-responsive microglia (ARM). Our copy does not identify MG-M4 or MG-M1 or compare their trajectories; searches for those module names and for CD163/DAM-related trajectories did not establish the claimed consistency. (LLM, conf=0.76)

    Experimental — accuracy not yet measured
  • MG-M4 was enriched for processes including phagocytosis, myeloid cell differentiation, and neutrophil activation.

    “The trajectory of MG-M4, containing CD163 as a hub gene, was consistent with that of DAM-like module MG-M1, and was enriched for processes including phagocytosis, myeloid cell differentiation, and neutrophil activation (Figure 6D); therefore, it is possible that MG-M4 represents an alternative microglial activation module.55”

    From hdWGCNA identifies co-expression networks in high-dimensional transcriptomics data (2023) · cites this paper as [55]

    The Results section on microglial subpopulations identifies CD163 as highly upregulated in amyloid-responsive microglia and reports enrichment for stress responses and immune regulation. Our copy does not identify MG-M4 or report its enrichment for phagocytosis, myeloid cell differentiation, or neutrophil activation (searched for MG-M4 and those processes). The sentence attributes the MG-M4 enrichment to its own Figure 6D, so this source cannot verify that specific claim. (LLM, conf=0.76)

    Experimental — accuracy not yet measured

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Cites

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Research works printed but not linked: 1

  1. [40]Kristiansen M,, Identification of the haemoglobin scavenger receptor. Nature, 2001 409(6817): p. 198– 201. 11196644

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Authors
Nguyen, A. T., Wang, K., Hu, G., Wang, X., Miao, Z., Azevedo, J. A., Suh, E., Van Deerlin, V. M., Choi, D., Roeder, K., Li, M., & Lee, E. B.
Affiliations
  • University of Pennsylvania (US)
  • Nankai University (CN)
  • Carnegie Mellon University (US)
Corresponding author
  • Li, Mingyao
  • Lee, Edward B.
Venue
Acta Neuropathologica
Published
2020-08-25
Volume
140
Issue
4
Pages
477-493
ISSN
  • 0001-6322 (ISSN-L)
  • 1432-0533
OpenAlex
W3080402156
Cited by
241
References
79
Citations by year
2026: 33 · 2025: 39 · 2024: 67 · 2023: 43 · 2022: 32 · 2021: 23 · 2020: 2 · 2012: 1
FWCI
9.51
Type
journal article
Language
en
Open access
Locations
  • Acta Neuropathologica (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion, cc-by)
  • PubMed Central (acceptedVersion, cc-by)
Funders
  • National Institutes of Health (R01NS095793, R56AG063344, P30AG010124, T32AG000255, R01GM108600, R01GM125301, R37MH05788)
  • University of Pennsylvania Institute on Aging Pilot Grant (Pilot Grant)
Topics
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Health Sciences › Medicine › Psychiatry and Mental health › Dementia and Cognitive Impairment Research
Keywords
Alzheimer's disease, apolipoprotein E, TREM2, amyloid-beta, microglial subpopulations, CD163, genetic risk variants, single-nucleus RNA sequencing, postmortem brain
MeSH terms
Alzheimer Disease, Apolipoproteins E, Humans, Membrane Glycoproteins, Receptors, Immunologic, Amyloid beta-Peptides, Microglia

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