Evidence map›Paper›PMID 21949650›Full record

ArticlePLoS pathogens2011

Non-lytic, actin-based exit of intracellular parasites from C. elegans intestinal cells.

Kathleen A Estes, Suzannah C Szumowski, Emily R Troemel

Open access · goldAbstract read
In one paragraph

Article in PLoS pathogens, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 41 papers.

0numbers the graph read from it
0cells of the map it votes in
41citing papers in PubMed
1.3field-weighted citation impact, top 24% 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

41 citing papers in PubMed, 77 citations in OpenAlex.

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  12. A cullin-RING ubiquitin ligase promotes thermotolerance as part of the intracellular pathogen response inProceedings of the National Academy of Sciences of the United States of America · 2020
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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

3 authors at 1 institution in 1 country.

Kathleen A EstesDivision of Biological Sciences, University of California, San Diego, La Jolla, California, United States of America.
Suzannah C Szumowski
Emily R Troemel
University of California, San Diego · US

Funding

Training Program in Basic Clinical GeneticsT32GM008666 · NIGMS · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI HAMILTON, BRUCE A · 1998 to 2021
$8.6M
The Intracellular Pathogen Response Triggers Defense Against Co-evolved PathogensR01GM114139 · NIGMS · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI Emily R Troemel · 2015 to 2026
$3.1M
A natural host model for microsporidia pathogenesis in the intestineR01AI087528 · NIAID · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI TROEMEL, EMILY R · 2010 to 2014
$1.9M
Training in ImmunologyT32AI060536 · NIAID · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI HEDRICK, STEPHEN M · 2006 to 2010
$1.1M
NIAID NIH HHS 5T32AI060536NIAID NIH HHS AI087528NIAID NIH HHS R01 AI087528NIAID NIH HHS T32 AI060536NIGMS NIH HHS R01 GM114139NIGMS NIH HHS T32 GM008666NIGMS NIH HHS T32GM008666
6 · The paper itself

Abstract

The intestine is a common site for invasion by intracellular pathogens, but little is known about how pathogens restructure and exit intestinal cells in vivo. The natural microsporidian parasite N. parisii invades intestinal cells of the nematode C. elegans, progresses through its life cycle, and then exits cells in a transmissible spore form. Here we show that N. parisii causes rearrangements of host actin inside intestinal cells as part of a novel parasite exit strategy. First, we show that N. parisii infection causes ectopic localization of the normally apical-restricted actin to the basolateral side of intestinal cells, where it often forms network-like structures. Soon after this actin relocalization, we find that gaps appear in the terminal web, a conserved cytoskeletal structure that could present a barrier to exit. Reducing actin expression creates terminal web gaps in the absence of infection, suggesting that infection-induced actin relocalization triggers gap formation. We show that terminal web gaps form at a distinct stage of infection, precisely timed to precede spore exit, and that all contagious animals exhibit gaps. Interestingly, we find that while perturbations in actin can create these gaps, actin is not required for infection progression or spore formation, but actin is required for spore exit. Finally, we show that despite large numbers of spores exiting intestinal cells, this exit does not cause cell lysis. These results provide insight into parasite manipulation of the host cytoskeleton and non-lytic escape from intestinal cells in vivo.

Indexed as

Actin CytoskeletonAnimalsCaenorhabditis elegansHost-Pathogen InteractionsIntestinesMicrofilament ProteinsMicrosporidiaRNA InterferenceRNA, Small InterferingSpores, FungalMicrofilament ProteinsRNA, Small Interfering

Identifiers

PMID21949650
PMCPMC3174248
OpenAlexW2137586633

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.