Evidence map›Paper›PMID 33752701›Full record

ArticleMolecular neurodegeneration2021

Plaque associated microglia hyper-secrete extracellular vesicles and accelerate tau propagation in a humanized APP mouse model.

Kevin Clayton, Jean Christophe Delpech, Shawn Herron, Naotoshi Iwahara, Maria Ericsson, Takashi Saito, Takaomi C Saido, Seiko Ikezu, Tsuneya Ikezu

Erratum issuedOpen access · goldAbstract read
In one paragraph

Article in Molecular neurodegeneration, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 148 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
148citing papers in PubMed, 2 pooled it
15.8field-weighted citation impact, top 1% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

148 citing papers in PubMed, 2 syntheses or guidelines pooled it, 225 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. A murine model of amyloid enhanced tauopathy: progressive changes in tau pathology and behavior.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2026
    Article
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  5. Human iPSC models revealResearch square · 2026
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  7. Microglia extract neuronal proteolytic organelles via skoupocytosis.bioRxiv : the preprint server for biology · 2026
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88 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

9 authors at 3 institutions in 2 countries.

Kevin ClaytonDepartments of Pharmacology and Experimental Therapeutics, Boston University School of Medicine, Boston, MA, 02118, USA.
Jean Christophe DelpechDepartments of Pharmacology and Experimental Therapeutics, Boston University School of Medicine, Boston, MA, 02118, USA.
Shawn HerronDepartments of Pharmacology and Experimental Therapeutics, Boston University School of Medicine, Boston, MA, 02118, USA.
Naotoshi IwaharaDepartments of Pharmacology and Experimental Therapeutics, Boston University School of Medicine, Boston, MA, 02118, USA.
Maria EricssonDepartment of Cell Biology, Harvard Medical School, Boston, MA, 02115, USA.
Takashi SaitoDepartment of Neurocognitive Science, Institute of Brain Science, Nagoya City University Graduate School of Medical Sciences, Nagoya, Aichi, Japan.
Takaomi C SaidoLaboratory for Proteolytic Neuroscience, RIKEN Center for Brain Science, Wako, Saitama, Japan.
Seiko IkezuDepartments of Pharmacology and Experimental Therapeutics, Boston University School of Medicine, Boston, MA, 02118, USA.
Tsuneya IkezuDepartments of Pharmacology and Experimental Therapeutics, Boston University School of Medicine, Boston, MA, 02118, USA. Ikezu.tsuneya@mayo.edu.ORCID http://orcid.org/0000-0002-3979-8596
Boston University · USRIKEN Center for Brain Science · JPHarvard University · US

Funding

TRAINING IN BIOMOLECULAR PHARMACOLOGYT32GM008541 · NIGMS · BOSTON UNIVERSITY MEDICAL CAMPUS · PI FARB, DAVID H · 1997 to 2022
$5.2M
Exosome-mediated propagation of pathogenic tau proteinRF1AG054199 · NIA · MAYO CLINIC JACKSONVILLE · PI IKEZU, TSUNEYA · 2016 to 2021
$5.0M
Targeting emerging P2RX7 signaling pathways in animal models of Alzheimer's diseaseR01AG066429 · NIA · MAYO CLINIC JACKSONVILLE · PI IKEZU, TSUNEYA · 2020 to 2024
$2.0M
Biogenesis of Exosomes, Secretion, and Trafficking in Alzheimer's DiseaseR56AG057469 · NIA · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI HOOK, VIVIAN Y. H, IKEZU, TSUNEYA · 2017 to 2017
$833k
TREM2-TYROBP coupling modulation for the reduction of Alzheimer's-mediated neuroinflammation: a novel pharmacologic therapyF31AG057170 · NIA · BOSTON UNIVERSITY MEDICAL CAMPUS · PI CLAYTON, KEVIN · 2018 to 2020
$135k
NIA NIH HHS F31 AG057170NIA NIH HHS R01 AG066429NIA NIH HHS R56 AG057469NIA NIH HHS RF1 AG054199NIGMS NIH HHS T32 GM008541
6 · The paper itself

Abstract

backgroundRecent studies suggest that microglia contribute to tau pathology progression in Alzheimer's disease. Amyloid plaque accumulation transforms microglia, the primary innate immune cells in the brain, into neurodegenerative microglia (MGnD), which exhibit enhanced phagocytosis of plaques, apoptotic neurons and dystrophic neurites containing aggregated and phosphorylated tau (p-tau). It remains unclear how microglia promote disease progression while actively phagocytosing pathological proteins, therefore ameliorating pathology.

methodsAdeno-associated virus expressing P301L tau mutant (AAV-P301L-tau) was stereotaxically injected into the medial entorhinal cortex (MEC) in C57BL/6 (WT) and humanized APP mutant knock-in homozygote (App

resultsExpressing P301L tau mutant in the MEC induced tau propagation to the granule cell layer of the hippocampal dentate gyrus, which was significantly exacerbated in App DISCUSSION: Our findings suggest that MGnD microglia hyper-secrete p-tau

Indexed as

Amyloid beta-Protein PrecursorAnimalsDentate GyrusEntorhinal CortexExtracellular VesiclesFemaleGene Knock-In TechniquesGenetic VectorsHumansInjectionsMaleMiceMice, Inbred C57BLMicrogliaMutation, MissenseNeuritesAmyloid beta-Protein PrecursorCsf1r protein, mouseMAPT protein, humanOrganic ChemicalsPLX5622Receptors, Granulocyte-Macrophage Colony-Stimulating FactorRecombinant Proteinstau ProteinsAdeno-associated virusAlzheimer’s diseaseAmyloid-beta peptideAmyloid precursor proteinExtracellular vesiclesHumanized mouse modelLentivirusMicrogliaMicrotubule-associated protein tauNeuritic plaqueTauopathy

Identifiers

PMID33752701
PMCPMC7986521
OpenAlexW3137321433

What OpenQuestion holds

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.