Evidence map›Paper›PMID 27485662›Full record

ArticleAutophagy2016

Intracellular Salmonella induces aggrephagy of host endomembranes in persistent infections.

Noelia López-Montero, Estel Ramos-Marquès, Cristina Risco, Francisco García-Del Portillo

Open access · bronzeAbstract read
In one paragraph

Article in Autophagy, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed, 1 pooled it
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

20 citing papers in PubMed, 1 synthesis or guideline pooled it, 30 citations in OpenAlex.

  1. Guideline
  2. Review
  3. Review
  4. Article
  5. Article
  6. Article
  7. Article
  8. Fit to dwell in many places - The growing diversity of intracellularFrontiers in cellular and infection microbiology · 2022
    Review
  9. Article
  10. A NovelFrontiers in microbiology · 2021
    Article
  11. Idiosyncratic Biogenesis of Intracellular Pathogens-Containing Vacuoles.Frontiers in cellular and infection microbiology · 2021
    Review
  12. Article
  13. Article
  14. Autophagy Induction by a Small Molecule InhibitsAntimicrobial agents and chemotherapy · 2019
    Article
  15. Article
  16. Article
  17. Article
  18. Microbiology spectrum · 2017
    Review
  19. Review
  20. Frontiers in cellular and infection microbiology · 2017
    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

4 authors at 2 institutions in 1 country.

Noelia López-Monteroa Laboratory of Intracellular Bacterial Pathogens, Department of Microbial Biotechnology, Centro Nacional de Biotecnología-Consejo Superior de Investigaciones Científicas (CNB-CSIC) , Madrid , Spain.
Estel Ramos-Marquèsa Laboratory of Intracellular Bacterial Pathogens, Department of Microbial Biotechnology, Centro Nacional de Biotecnología-Consejo Superior de Investigaciones Científicas (CNB-CSIC) , Madrid , Spain.
Cristina Riscob Cell Structure Laboratory, Department of Macromolecular Structures, Centro Nacional de Biotecnología-Consejo Superior de Investigaciones Científicas (CNB-CSIC) , Madrid , Spain.
Francisco García-Del Portilloa Laboratory of Intracellular Bacterial Pathogens, Department of Microbial Biotechnology, Centro Nacional de Biotecnología-Consejo Superior de Investigaciones Científicas (CNB-CSIC) , Madrid , Spain.
Centro Nacional de Biotecnología · ESConsejo Superior de Investigaciones Científicas · ES

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Xenophagy has been studied in epithelial cells infected with Salmonella enterica serovar Typhimurium (S. Typhimurium). Distinct autophagy receptors target this pathogen to degradation after interacting with ubiquitin on the surface of cytosolic bacteria, and the phagophore- and autophagosome-associated protein MAP1LC3/LC3. Glycans exposed in damaged phagosomal membranes and diacylglycerol accumulation in the phagosomal membrane also trigger S. Typhimurium xenophagy. How these responses control intraphagosomal and cytosolic bacteria remains poorly understood. Here, we examined S. Typhimurium interaction with autophagy in fibroblasts, in which the pathogen displays limited growth and does not escape into the cytosol. Live-cell imaging microscopy revealed that S. Typhimurium recruits late endosomal or lysosomal compartments that evolve into a membranous aggregate connected to the phagosome. Active dynamics and integrity of the phagosomal membrane are requisite to induce such aggregates. This membranous structure increases over time to become an aggresome that engages autophagy machinery at late infection times (> 6 h postentry). The newly formed autophagosome harbors LC3 and the autophagy receptor SQSTM1/p62 but is devoid of ubiquitin and the receptor CALCOCO2/NDP52. Live-cell imaging showed that this autophagosome captures and digests within the same vacuole the aggresome and some apposed intraphagosomal bacteria. Other phagosomes move away from the aggresome and avoid destruction. Thus, host endomembrane accumulation resulting from activity of intracellular S. Typhimurium stimulates a novel type of aggrephagy that acts independently of ubiquitin and CALCOCO2, and destroys only a few bacteria. Such selective degradation might allow the pathogen to reduce its progeny and, as a consequence, to establish persistent infections.

Indexed as

AutophagyHost-Pathogen InteractionsAnimalsBacterial ProteinsBacterial Secretion SystemsCell MembraneCpG IslandsFibroblastsGlycoproteinsHeLa CellsHumansIntracellular SpaceLysosomesMicrotubule-Organizing CenterMicrotubulesModels, BiologicalBacterial ProteinsBacterial Secretion SystemsGlycoproteinsUbiquitinaggrephagyfibroblastLGP-membranous aggregatepersistenceSalmonellaxenophagy

Identifiers

PMID27485662
PMCPMC5079681
OpenAlexW2486076472

What OpenQuestion holds

Textmetadata
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.