Evidence map›Paper›PMID 21799938›Full record

ArticlePloS one2011

Eeyarestatin 1 interferes with both retrograde and anterograde intracellular trafficking pathways.

Mina-Olga Aletrari, Craig McKibbin, Helen Williams, Vidya Pawar, Paola Pietroni, J Michael Lord, Sabine L Flitsch, Roger Whitehead, Eileithyia Swanton, Stephen High and 1 more

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed
1.2field-weighted citation impact, top 22% 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

19 citing papers in PubMed, 37 citations in OpenAlex.

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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

11 authors at 2 institutions in 1 country.

Mina-Olga AletrariSchool of Life Sciences, University of Warwick, Coventry, United Kingdom.
Craig McKibbin
Helen Williams
Vidya Pawar
Paola Pietroni
J Michael Lord
Sabine L Flitsch
Roger Whitehead
Eileithyia Swanton
Stephen High
Robert A Spooner
University of Manchester · GBUniversity of Warwick · GB

Funding

Cell responses to, and proteins exploited by, toxinsU01AI065869 · NIAID · UNIVERSITY OF WARWICK · PI LORD, JOHN M · 2005 to 2009
$690k
Biotechnology and Biological Sciences Research Council BB/D005752/1NIAID NIH HHS 5U01AI65869-02NIAID NIH HHS U01 AI065869Wellcome TrustWellcome Trust 080566/Z/06/Z
6 · The paper itself

Abstract

backgroundThe small molecule Eeyarestatin I (ESI) inhibits the endoplasmic reticulum (ER)-cytosol dislocation and subsequent degradation of ERAD (ER associated protein degradation) substrates. Toxins such as ricin and Shiga/Shiga-like toxins (SLTx) are endocytosed and trafficked to the ER. Their catalytic subunits are thought to utilise ERAD-like mechanisms to dislocate from the ER into the cytosol, where a proportion uncouples from the ERAD process, recovers a catalytic conformation and destroys their cellular targets. We therefore investigated ESI as a potential inhibitor of toxin dislocation. METHODOLOGY AND PRINCIPAL

findingsUsing cytotoxicity measurements, we found no role for ES(I) as an inhibitor of toxin dislocation from the ER, but instead found that for SLTx, ESI treatment of cells was protective by reducing the rate of toxin delivery to the ER. Microscopy of the trafficking of labelled SLTx and its B chain (lacking the toxic A chain) showed a delay in its accumulation at a peri-nuclear location, confirmed to be the Golgi by examination of SLTx B chain metabolically labelled in the trans-Golgi cisternae. The drug also reduced the rate of endosomal trafficking of diphtheria toxin, which enters the cytosol from acidified endosomes, and delayed the Golgi-specific glycan modifications and eventual plasma membrane appearance of tsO45 VSV-G protein, a classical marker for anterograde trafficking. CONCLUSIONS AND SIGNIFICANCE: ESI acts on one or more components that function during vesicular transport, whilst at least one retrograde trafficking pathway, that of ricin, remains unperturbed.

Indexed as

Biological TransportCytosolDiphtheria ToxinEndoplasmic ReticulumHeLa CellsHumansHydrazonesHydroxyureaIntracellular MembranesIntracellular SpaceMembrane GlycoproteinsRicinShiga ToxinTime FactorsViral Envelope Proteins1-(4-chlorophenyl)-3-(3-(4-chlorophenyl)-5,5-dimethyl-1-(3-(5-nitrofuran-2-yl)allyldienehydrazinocarbonylmethyl)-2-oxoimidazolidin-4-yl)-1-hydroxyureaDiphtheria ToxinG protein, vesicular stomatitis virusHydrazonesHydroxyureaMembrane GlycoproteinsRicinShiga ToxinViral Envelope Proteins

Identifiers

PMID21799938
PMCPMC3143184
OpenAlexW1988186235

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.