Evidence map›Paper›PMID 14638761›Full record

ArticleInfection and immunity2003

Listeria monocytogenes mutants that fail to compartmentalize listerolysin O activity are cytotoxic, avirulent, and unable to evade host extracellular defenses.

Ian J Glomski, Amy L Decatur, Daniel A Portnoy

Open access · greenAbstract read
In one paragraph

Article in Infection and immunity, 2003. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 69 papers.

0numbers the graph read from it
0cells of the map it votes in
69citing papers in PubMed
6.5field-weighted citation impact, top 3% 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

69 citing papers in PubMed, 131 citations in OpenAlex.

  1. Host methylglyoxal activates theProceedings of the National Academy of Sciences of the United States of America · 2026
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  5. Current advances in microbial-based cancer therapies.Medical oncology (Northwood, London, England) · 2023
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  12. Different Shades ofFrontiers in microbiology · 2021
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  13. An Inducible Cre-Toxins · 2020
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  14. Article
  15. Bacteria-cancer interactions: bacteria-based cancer therapy.Experimental & molecular medicine · 2019
    Review
  16. Mechanisms protecting host cells against bacterial pore-forming toxins.Cellular and molecular life sciences : CMLS · 2019
    Review
  17. Article
  18. Microbiology spectrum · 2018
    Review
  19. Article
  20. Article

9 more citing papers are in PubMed but not listed here.

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.

Ian J GlomskiDepartment of Molecular and Cell Biology, University of California, Berkeley, California 94720-3202, USA.
Amy L Decatur
Daniel A Portnoy
University of California, Berkeley · US

Funding

Listeria Hemolysis and Escape From a VacuoleR01AI027655 · NIAID · UNIVERSITY OF PENNSYLVANIA · PI DANIEL A PORTNOY · 1993 to 2026
$10.1M
ACTA AND THE CELL TO CELL SPREAD OF LISTERIAR37AI029619 · NIAID · UNIVERSITY OF PENNSYLVANIA · PI PORTNOY, DANIEL A · 1995 to 2004
$1.8M
ACTA AND THE ACTIN BASED MOBILITY OF LISTERIAF32AI010283 · NIAID · UNIVERSITY OF CALIFORNIA BERKELEY · PI DECATUR, AMY L · 1998 to 2000
$38k
MOLECULAR BIOLOGY OF LISTERIA-HOST CELL INTERACTIONR01AI029619 · NIAID · UNIVERSITY OF PENNSYLVANIA · PI PORTNOY, DANIEL A · 1990 to 1994
–
LISTERIA HEMOLYSIN AND INTRACELLULAR GROWTHR29AI027655 · NIAID · UNIVERSITY OF PENNSYLVANIA · PI PORTNOY, DANIEL A · 1988 to 1992
–
NIAID NIH HHS AI10283NIAID NIH HHS AI27655NIAID NIH HHS AI29619NIAID NIH HHS F32 AI010283NIAID NIH HHS R01 AI027655NIAID NIH HHS R37 AI029619
6 · The paper itself

Abstract

Listeria monocytogenes is a facultative intracellular bacterial pathogen that escapes from a phagosome and grows in the host cell cytosol. Escape of the bacterium from the phagosome to the cytosol is mediated by the bacterial pore-forming protein listeriolysin O (LLO). LLO has multiple mechanisms that optimize activity in the phagosome and minimize activity in the host cytosol. Mutants that fail to compartmentalize LLO activity are cytotoxic and have reduced virulence. We sought to determine why cytotoxic bacteria have attenuated virulence in the mouse model of listeriosis. In this study, we constructed a series of strains with mutations in LLO and with various degrees of cytotoxicity. We found that the more cytotoxic the strain in cell culture, the less virulent it was in mice. Induction of neutropenia increased the relative virulence of the cytotoxic strains 100-fold in the spleen and 10-fold in the liver. The virulence defect was partially restored in neutropenic mice by adding gentamicin, an antibiotic that kills extracellular bacteria. Additionally, L. monocytogenes grew more slowly in extracellular fluid (mouse serum) than within tissue culture cells. We concluded that L. monocytogenes controls the cytolytic activity of LLO to maintain its nutritionally rich intracellular niche and avoid extracellular defenses of the host.

Indexed as

Bacterial ToxinsCell CompartmentationMutationAnimalsCell LineDisease Models, AnimalGene Expression Regulation, BacterialHeat-Shock ProteinsHemolysin ProteinsHumansListeria monocytogenesListeriosisMacrophagesMiceMice, Inbred C57BLPhagosomesBacterial ToxinsHeat-Shock ProteinsHemolysin ProteinshlyA protein, Listeria monocytogenes

Identifiers

PMID14638761
PMCPMC308949
OpenAlexW2132536095

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.