Evidence map›Paper›PMID 24448451›Full record

ArticleScientific reports2014

Bdellovibrio bacteriovorus inhibits Staphylococcus aureus biofilm formation and invasion into human epithelial cells.

Ajay K Monnappa, Mohammed Dwidar, Jeong Kon Seo, Jin-Hoe Hur, Robert J Mitchell

Open access · goldAbstract read
In one paragraph

Article in Scientific reports, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 49 papers.

0numbers the graph read from it
0cells of the map it votes in
49citing papers in PubMed
4.1field-weighted citation impact, top 5% 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

49 citing papers in PubMed, 98 citations in OpenAlex.

  1. Review
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  3. Frontiers in microbiology · 2026
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  7. Review
  8. Review
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  13. Effect of Predator BacteriaIndian journal of microbiology · 2023
    Article
  14. Use of Resazurin To Rapidly EnumerateMicrobiology spectrum · 2022
    Article
  15. Biological Control ofMicroorganisms · 2022
    Review
  16. Interaction ofMicroorganisms · 2022
    Article
  17. The potential of facultative predatoryFrontiers in microbiology · 2022
    Review
  18. Review
  19. Review
  20. 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

5 authors at 1 institution in 1 country.

Ajay K Monnappa1] School of Life Sciences, Ulsan National Institute of Science and Technology [2].
Mohammed Dwidar1] School of Life Sciences, Ulsan National Institute of Science and Technology [2].
Jeong Kon SeoUNIST Central Research Facility, Ulsan National Institute of Science and Technology.
Jin-Hoe HurUNIST Central Research Facility, Ulsan National Institute of Science and Technology.
Robert J MitchellSchool of Life Sciences, Ulsan National Institute of Science and Technology.
Ulsan National Institute of Science and Technology · KR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Bdellovibrio bacteriovorus HD100 is a predatory bacterium that attacks many Gram-negative human pathogens. A serious drawback of this strain, however, is its ineffectiveness against Gram-positive strains, such as the human pathogen Staphylococcus aureus. Here we demonstrate that the extracellular proteases produced by a host-independent B. bacteriovorus (HIB) effectively degrade/inhibit the formation of S. aureus biofilms and reduce its virulence. A 10% addition of HIB supernatant caused a 75% or greater reduction in S. aureus biofilm formation as well as 75% dispersal of pre-formed biofilms. LC-MS-MS analyses identified various B. bacteriovorus proteases within the supernatant, including the serine proteases Bd2269 and Bd2321. Tests with AEBSF confirmed that serine proteases were active in the supernatant and that they impacted S. aureus biofilm formation. The supernatant also possessed a slight DNAse activity. Furthermore, treatment of planktonic S. aureus with the supernatant diminished its ability to invade MCF-10a epithelial cells by 5-fold but did not affect the MCF-10a viability. In conclusion, this study illustrates the hitherto unknown ability of B. bacteriovorus to disperse Gram-positive pathogenic biofilms and mitigate their virulence.

Indexed as

VirulenceBdellovibrioBiofilmsBreastCell ProliferationCells, CulturedChromatography, LiquidEpithelial CellsFemaleHumansProtease InhibitorsSerine EndopeptidasesStaphylococcal InfectionsStaphylococcus aureusTandem Mass SpectrometryProtease InhibitorsSerine Endopeptidases

Identifiers

PMID24448451
PMCPMC3898049
OpenAlexW2089094999

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.