Evidence map›Paper›PMID 21515373›Full record

ArticleNeurobiology of disease2011

Retromer disruption promotes amyloidogenic APP processing.

Christopher P Sullivan, Anthony G Jay, Edward C Stack, Maria Pakaluk, Erin Wadlinger, Richard E Fine, John M Wells, Peter J Morin

Open access · greenAbstract read
In one paragraph

Article in Neurobiology of disease, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 60 papers.

0numbers the graph read from it
0cells of the map it votes in
60citing papers in PubMed
4.8field-weighted citation impact, top 5% 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

60 citing papers in PubMed, 96 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Review
  6. γ-secretase facilitates retromer-mediated retrograde transport.bioRxiv : the preprint server for biology · 2024
    Article
  7. Article
  8. Towards a Unitary Hypothesis of Alzheimer's Disease Pathogenesis.Journal of Alzheimer's disease : JAD · 2024
    Article
  9. Article
  10. Article
  11. Receptor Recycling by Retromer.Molecular and cellular biology · 2023
    Review
  12. Article
  13. Article
  14. Review
  15. Article
  16. Review
  17. Article
  18. Retromer dysfunction at the nexus of tauopathies.Cell death and differentiation · 2021
    Review
  19. Function of exosomes in neurological disorders and brain tumors.Extracellular vesicles and circulating nucleic acids · 2021
    Article
  20. Overdosing on iron: Elevated iron and degenerative brain disorders.Experimental biology and medicine (Maywood, N.J.) · 2020
    Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

8 authors at 3 institutions in 1 country.

Christopher P SullivanGeriatric Research, Education, and Clinical Center, Edith Nourse Rogers Memorial Veteran's Administration Hospital, Bedford, MA, USA. chris.sullivan@va.gov
Anthony G Jay
Edward C Stack
Maria Pakaluk
Erin Wadlinger
Richard E Fine
John M Wells
Peter J Morin
Boston University · USEdith Nourse Rogers Memorial Veterans Hospital · USGeriatric Research Education and Clinical Center · US

Funding

Neuropathology CoreP30AG013846 · NIA · BOSTON UNIVERSITY MEDICAL CAMPUS · PI KOWALL, NEIL W. · 1996 to 2020
$29.1M
NIA NIH HHS P30 AG013846
6 · The paper itself

Abstract

Retromer deficiency has been implicated in sporadic AD and animals deficient in retromer components exhibit pronounced neurodegeneration. Because retromer performs retrograde transport from the endosome to the Golgi apparatus and neuronal Aβ is found in late endosomal compartments, we speculated that retromer malfunction might enhance amyloidogenic APP processing by promoting interactions between APP and secretase enzymes in late endosomes. We have evaluated changes in amyloid precursor protein (APP) processing and trafficking as a result of disrupted retromer activity by knockdown of Vps35, a vacuolar sorting protein that is an essential component of the retromer complex. Knocking down retromer activity produced no change in the quantity or cellular distribution of total cellular APP and had no affect on internalization of cell-surface APP. Retromer deficiency did, however, increase the ratio of secreted Aβ42:Aβ40 in HEK-293 cells over-expressing APP695, due primarily to a decrease in Aβ40 secretion. Recent studies suggest that the retromer-trafficked protein, Wntless, is secreted at the synapse in exosome vesicles and that these same vesicles contain Aβ. We therefore hypothesized that retromer deficiency may be associated with altered exosomal secretion of APP and/or secretase fragments. Holo-APP, Presenilin and APP C-terminal fragments were detected in exosomal vesicles secreted from HEK-293 cells. Levels of total APP C-terminal fragments were significantly increased in exosomes secreted by retromer deficient cells. These data suggest that reduced retromer activity can mimic the effects of familial AD Presenilin mutations on APP processing and promote export of amyloidogenic APP derivatives.

Indexed as

Alzheimer DiseaseAmyloid beta-PeptidesAmyloid beta-Protein PrecursorAmyloidosisExosomesGene Knockdown TechniquesHEK293 CellsHumansMutationNeuronsUp-RegulationVesicular Transport ProteinsAmyloid beta-PeptidesAmyloid beta-Protein PrecursorVesicular Transport ProteinsVPS35 protein, human

Identifiers

PMID21515373
PMCPMC3114192
OpenAlexW1964319599

What OpenQuestion holds

Textmetadata
LicenceTDM
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.