Evidence map›Paper›PMID 23173708›Full record

ArticleBMC neuroscience2012

Wnt3a induces exosome secretion from primary cultured rat microglia.

Claudie Hooper, Ricardo Sainz-Fuertes, Steven Lynham, Abdul Hye, Richard Killick, Alice Warley, Cecilia Bolondi, Jennifer Pocock, Simon Lovestone

Erratum issuedOpen access · goldAbstract read
In one paragraph

Article in BMC neuroscience, 2012. 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 55 papers.

0numbers the graph read from it
0cells of the map it votes in
55citing papers in PubMed
2.6field-weighted citation impact, top 10% 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

55 citing papers in PubMed, 98 citations in OpenAlex.

  1. Review
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  6. Article
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  8. Extracellular vesicles as mediators and markers of acute organ injury: current concepts.European journal of trauma and emergency surgery : official publication of the European Trauma Society · 2022
    Review
  9. The role of microglial exosomes in brain injury.Frontiers in cellular neuroscience · 2022
    Review
  10. Article
  11. Review
  12. Review
  13. Article
  14. Review
  15. Article
  16. Review
  17. Article
  18. Article
  19. Microglial Exosomes in Neurodegenerative Disease.Frontiers in molecular neuroscience · 2021
    Review
  20. Review
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

9 authors at 2 institutions in 1 country.

Claudie HooperKing's College London, MRC Centre for Neurodegenerative Research, Institute of Psychiatry, De Crespigny Park, Denmark Hill, London SE5 8AF, UK. claudie.1.hooper@kcl.ac.uk
Ricardo Sainz-Fuertes
Steven Lynham
Abdul Hye
Richard Killick
Alice Warley
Cecilia Bolondi
Jennifer Pocock
Simon Lovestone
King's College London · GBUniversity College London · GB

Funding

Medical Research Council G0700492
6 · The paper itself

Abstract

backgroundMicroglia, the immune effector cells of the CNS and the signaling molecule Wnt, both play critical roles in neurodevelopment and neurological disease. Here we describe the inducible release of exosomes from primary cultured rat microglia following treatment with recombinant carrier-free Wnt3a.

resultsWnt3a was internalised into microglia, being detectable in early endosomes, and secreted in exosomes through a GSK3-independent mechanism. Electron microscopy demonstrated that exosomes were elliptical, electron-dense (100 nm) vesicles that coalesced with time in vitro. In contrast to microglia, primary cortical neurons released exosomes constitutively and the quantity of exosomes released was not altered by Wnt3a treatment. The proteomic profile of the microglial-derived exosomes was characterised using liquid chromatography-tandem mass spectrometry (LC/MS/MS) and the vesicles were found to be associated with proteins involved in cellular architecture, metabolism, protein synthesis and protein degradation including β-actin, glyceraldehyde-3-phosphate dehydrogenase, ribosomal subunits and ubiquitin (45 proteins in total). Unlike lipopolysaccharide, Wnt3a did not induce a neurotoxic, pro-inflammatory phenotype in primary microglia.

conclusionThese findings reveal a novel mechanism through which Wnt3a signals in microglia resulting in the release of exosomes loaded with proteinaceous cargo.

Indexed as

AnimalsCerebral CortexExosomesInflammation MediatorsMaleMicrogliaNerve Tissue ProteinsNeuronsPrimary Cell CultureProteomeRatsRats, Sprague-DawleyWnt3A ProteinInflammation MediatorsNerve Tissue ProteinsProteomeWnt3A Protein

Identifiers

PMID23173708
PMCPMC3541220
OpenAlexW2126749287

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

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.