Cited by 54Neuroinflammation and Neurodegeneration MechanismsAlzheimer's disease research and treatmentsInflammasome and immune disorders

Different mechanisms of apolipoprotein E isoform‐dependent modulation of prostaglandin E 2 production and triggering receptor expressed on myeloid cells 2 ( TREM2 ) expression after innate immune activation of microglia

Open access
Li, Xianwu, Montine, Kathleen S., Keene, C. Dirk, Montine, Thomas J.·2015·The FASEB Journal

Abstract

Several lines of evidence support immune response in brain as a mechanism of injury in Alzheimer disease (AD). Moreover, immune activation is heightened in apolipoprotein E (APOE) ε4 carriers; inhibitors of prostaglandin (PG) synthesis show a partially protective effect on AD risk from APOE ε4; and genetic variants in triggering receptor expressed on myeloid cells 2 (TREM2) are a rare but potent risk for AD. We tested the hypothesis that APOE ε4 inheritance modulates both the PGE2 pathway and TREM2 expression using primary murine microglia from targeted replacement (TR) APOE3/3 and APOE4/4 mice. Microglial cyclooxygenase-2, microsomal PGE synthase, and PGE2 expression were increased 2- to 25-fold in both genotypes by TLR activators; however, this induction was significantly (P < 0.01) greater in TR APOE4/4 microglia with TLR3 and TLR4 activators. Microglial TREM2 expression was reduced approximately 85% by all TLR activators; this reduction was approximately one-third greater in microglia from TR APOE4/4 mice. Importantly, both receptor-associated protein and a nuclear factor κ-light-chain-enhancer inhibitor blocked TR APOE4/4-dependent effects on the PGE2 pathway but not on TREM2 expression. These data demonstrate complementary, but mechanistically distinct, regulation of pro- and anti-inflammatory mediators in TR APOE4/4 murine microglia that yields a more proinflammatory state than with TR APOE3/3.

Integrity signals

Registry

Crossref · 10.1096/fj.14-262683

Cites

56 of 56 references verified0 citation errors · 0 not checkable

Statistics

Recomputing p-values needs the paper’s full text.

Claims the paper makes

We couldn’t retrieve this paper’s full text, so its claims and self-check weren’t run. The registry and citation checks still apply.

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?

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Li, X., Montine, K. S., Keene, C. D., & Montine, T. J.
Affiliations
University of Washington (US)
Corresponding author
Li, Xianwu
Venue
The FASEB Journal
Publisher
Wiley
Published
2015-01-15
Volume
29
Issue
5
Pages
1754-1762
ISSN
  • 0892-6638 (ISSN-L)
  • 1530-6860
OpenAlex
W2121536490
Cited by
54
References
56
Citations by year
2026: 2 · 2025: 4 · 2024: 3 · 2023: 2 · 2022: 2 · 2021: 3 · 2020: 1 · 2019: 4 · 2018: 9 · 2017: 9 · 2016: 11 · 2015: 4
FWCI
5.88
Type
journal article
Language
en
Open access
Locations
  • The FASEB Journal (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health (R01‐ES016754, P50‐AG05136)
  • National Institute of Neurological Disorders and Stroke (P50‐NS062684)
  • Nancy and Buster Alvord Endowment
Topics
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Inflammasome and immune disorders
Keywords
apolipoprotein E, APOE ε4, TREM2, prostaglandin E2, microglia, innate immune activation, cyclooxygenase-2, TLR3, TLR4, Alzheimer's disease, neuroinflammation, NF-κB, receptor-associated protein
MeSH terms
Prostaglandin-E Synthases, Animals, Apolipoproteins E, Cells, Cultured, Enzyme-Linked Immunosorbent Assay, Flow Cytometry, Membrane Glycoproteins, Mice, Inbred C57BL, Receptors, Immunologic, RNA, Messenger, Blotting, Western, Dinoprostone, Microglia, Mice, Knockout, Intramolecular Oxidoreductases, Protein Isoforms, Reverse Transcriptase Polymerase Chain Reaction, Myeloid Cells, Toll-Like Receptors, Mice, Cyclooxygenase 2, Apolipoprotein E3, Apolipoprotein E4, Real-Time Polymerase Chain Reaction

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