Cited by 128Neuroinflammation and Neurodegeneration MechanismsPhagocytosis and Immune RegulationAlzheimer's disease research and treatments

Differential Phagocytic Properties of CD45low Microglia and CD45high Brain Mononuclear Phagocytes—Activation and Age-Related Effects

Open access
Rangaraju, Srikant, Raza, Syed Ali, Li, Noel Xiang’An, Betarbet, Ranjita, Dammer, Eric B., Duong, Duc, Lah, James J., Seyfried, Nicholas T. +1 more·2018·Frontiers in Immunology

Abstract

In the central nervous system (CNS), microglia are innate immune mononuclear phagocytes (CNS MPs) that can phagocytose infectious particles, apoptotic cells, neurons and pathological protein aggregates such as Aβ in Alzheimer’s disease (AD). While CD11b+CD45low microglia account for the majority of CNS MPs, a small population of CD11b+CD45high CNS MPs is also recognized in AD that surround Aβ plaques. These transcriptionally-distinct and pathologically-relevant CD45high cells have unclear origin and undefined phagocytic characteristics. We have comprehensively validated rapid flow cytometric assays of bulk-phase and amyloid β fibril (fAβ) phagocytosis and applied these to study acutely isolated CNS MPs. Using these methods, we provide novel insights into differential abilities of CD11b+ CD45low and CD45high CNS MPs to phagocytose macroparticles and fAβ under normal, acute and chronic neuroinflammatory states. CD45high CNS MPs also highly upregulate TREM2, CD11c and several disease-associated-microglia (DAM) signature genes, and have a higher phagocytic capacity for Aβ as compared to CD45low microglia in the 5xFAD mouse model of AD that becomes more apparent with ageing. Our data suggest an overall pro-phagocytic and protective role for CD11b+CD45high CNS MPs in neurodegeneration, which if promoted, could be beneficial.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.3389/fimmu.2018.00405

Cites

80 of 80 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • Cytochalasin D inhibits the second peak of fluorescence in the Aβ42 phagocytosis assay, suggesting that the first peak represents non-specific binding of Aβ42 to cells and the second peak represents true actin-dependent uptake.

    “We have found that Cytochalasin D inhibits the second peak of fluorescence in this assay, suggesting that the first peak represent non-specific binding of Aβ42 to cells while the second peak represents true uptake in an actin-dependent manner [31].”

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Rangaraju, S., Raza, S. A., Li, N. X., Betarbet, R., Dammer, E. B., Duong, D., Lah, J. J., Seyfried, N. T., & Levey, A. I.
Affiliations
Emory University (US)
Corresponding author
Rangaraju, Srikant
Venue
Frontiers in Immunology
Published
2018-03-02
Volume
9
Pages
405-405
ISSN
1664-3224 (ISSN-L)
OpenAlex
W2792377614
Cited by
126
References
80
Citations by year
2026: 9 · 2025: 8 · 2024: 12 · 2023: 18 · 2022: 35 · 2021: 13 · 2020: 19 · 2019: 8 · 2018: 3 · 2017: 1
FWCI
4.82
Type
journal article
Language
en
Open access
Locations
  • Frontiers in Immunology (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)
Funders
  • National Institutes of Health (P50 AG025688, NS099474-1, P30 NS055077, 1U01AG046161)
  • National Science Foundation (CHE-1507932, NSF/DMR-BSF 1610377)
  • American Brain Foundation
  • Alzheimer’s Association
Topics
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
  • Life Sciences › Immunology and Microbiology › Immunology › Phagocytosis and Immune Regulation
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
Keywords
microglia, phagocytosis, amyloid-beta fibrils, Alzheimer's disease, disease-associated microglia, TREM2, CD11c, neuroinflammation, aging, 5xFAD mice, neurodegeneration
MeSH terms
Aging, Alzheimer Disease, Animals, Brain, Cell Line, Disease Models, Animal, Humans, Membrane Glycoproteins, Mice, Inbred C57BL, Mice, Mutant Strains, Phagocytes, Phagocytosis, Receptors, Immunologic, Mononuclear Phagocyte System, Amyloid beta-Peptides, Leukocyte Common Antigens, Microglia, Mice

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review