Evidence map›Paper›PMID 24334670›Full record

ArticleApplied and environmental microbiology2014

The Legionella pneumophila collagen-like protein mediates sedimentation, autoaggregation, and pathogen-phagocyte interactions.

Mena Abdel-Nour, Carla Duncan, Akriti Prashar, Chitong Rao, Christophe Ginevra, Sophie Jarraud, Donald E Low, Alexander W Ensminger, Mauricio R Terebiznik, Cyril Guyard

Open access · bronzeAbstract read
In one paragraph

Article in Applied and environmental microbiology, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed
1.5field-weighted citation impact, top 19% 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

23 citing papers in PubMed, 47 citations in OpenAlex.

  1. Article
  2. mBio · 2025
    Article
  3. Review
  4. Article
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  14. Article
  15. Review
  16. Biosensors for the Detection of Interaction betweenSensors (Basel, Switzerland) · 2018
    Article
  17. Article
  18. Bacterial autoaggregation.AIMS microbiology · 2018
    Review
  19. Review
  20. Frontiers in microbiology · 2017
    Article
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

10 authors at 3 institutions in 2 countries.

Mena Abdel-NourOntario Agency for Health Protection and Promotion, Toronto, Ontario, Canada.
Carla Duncan
Akriti Prashar
Chitong Rao
Christophe Ginevra
Sophie Jarraud
Donald E Low
Alexander W Ensminger
Mauricio R Terebiznik
Cyril Guyard
University of Toronto · CAMount Sinai Hospital · CAUniversité Claude Bernard Lyon 1 · FR

Funding

Canadian Institutes of Health Research MOP-102514
6 · The paper itself

Abstract

Although only partially understood, multicellular behavior is relatively common in bacterial pathogens. Bacterial aggregates can resist various host defenses and colonize their environment more efficiently than planktonic cells. For the waterborne pathogen Legionella pneumophila, little is known about the roles of autoaggregation or the parameters which allow cell-cell interactions to occur. Here, we determined the endogenous and exogenous factors sufficient to allow autoaggregation to take place in L. pneumophila. We show that isolates from Legionella species which do not produce the Legionella collagen-like protein (Lcl) are deficient in autoaggregation. Targeted deletion of the Lcl-encoding gene (lpg2644) and the addition of Lcl ligands impair the autoaggregation of L. pneumophila. In addition, Lcl-induced autoaggregation requires divalent cations. Escherichia coli producing surface-exposed Lcl is able to autoaggregate and shows increased biofilm production. We also demonstrate that L. pneumophila infection of Acanthamoeba castellanii and Hartmanella vermiformis is potentiated under conditions which promote Lcl dependent autoaggregation. Overall, this study shows that L. pneumophila is capable of autoaggregating in a process that is mediated by Lcl in a divalent-cation-dependent manner. It also reveals that Lcl potentiates the ability of L. pneumophila to come in contact, attach, and infect amoebae.

Indexed as

Bacterial AdhesionHost-Pathogen InteractionsAcanthamoeba castellaniiBacterial ProteinsCations, DivalentEscherichia coliGene DeletionLegionella pneumophilaLoboseaPhagocytesBacterial ProteinsCations, Divalent

Identifiers

PMID24334670
PMCPMC3911070
OpenAlexW2140894913

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.