Cited by 192Bacterial biofilms and quorum sensingOral microbiology and periodontitis researchBacterial Genetics and Biotechnology

Bacterial fight-and-flight responses enhance virulence in a polymicrobial infection

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Stacy, Apollo, Everett, Jake, Jorth, Peter, Trivedi, Urvish, Rumbaugh, Kendra P., Whiteley, Marvin·2014·Proceedings of the National Academy of Sciences

Abstract

Significance: Polymicrobial synergy occurs when infections caused by more than one species are more severe than the sum of the individual species acting alone. Here, we show that a bacterial fight-and-flight response to an antimicrobial, hydrogen peroxide (H 2 O 2 ), is required for a pathogen to display synergy with a commensal bacterium in vivo. H 2 O 2 is generated by the commensal, and in response, the pathogen either enzymatically destroys (fights) the antimicrobial or disperses away (takes flight) from the antimicrobial-producing commensal. Remarkably, both behaviors are critical for the pathogen to display synergy during coinfection. Moreover, when the pathogen is unable to disperse, the community loses spatial organization, trapping the pathogen next to the commensal.

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Crossref · 10.1073/pnas.1400586111

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58 of 58 references verified0 citation errors · 0 not checkable

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  • When co-cultured with Streptococcus gordonii, Aggregatibacter actinomycetemcomitans cells upregulated the dspB gene encoding the poly-N-acetyl-d-glucosamine-degrading enzyme Dispersin B.

    “When co-cultured with S. gordonii, A. actinomycetemcomitans cells upregulated the dspB gene encoding the poly-N-acetyl-d-glucosamine–degrading enzyme Dispersin B.81”

    From The dental plaque biofilm matrix (2021) · cites this paper as [81]

    The Results report significantly enhanced dspB transcription when Aggregatibacter actinomycetemcomitans was cocultured with Streptococcus gordonii under oxic conditions, and identify dspB as encoding Dispersin B. Our copy calls it a biofilm-dispersing enzyme but does not specify that it degrades poly-N-acetyl-d-glucosamine. (LLM, conf=0.85)

    Experimental — accuracy not yet measured
  • The matrix helps to position cells at a distance where mutually beneficial interactions are optimized and competition is minimized.

    “The matrix helps to position cells at a distance where mutually beneficial interactions are optimized and competition is minimized.81,230”

    From The dental plaque biofilm matrix (2021) · cites this paper as [81]

    The paper reports that DspB breaks down a component of the biofilm matrix and is required for Aggregatibacter actinomycetemcomitans to position itself farther from Streptococcus gordonii (main text; “DspB Modulates Community Spatial Structure in Vivo,” page unavailable). It proposes, rather than demonstrates, that this spacing maximizes access to beneficial lactate while minimizing exposure to inhibitory hydrogen peroxide. The claim presents that proposed optimization as established and generalizes the finding from matrix remodeling to the matrix itself. (LLM, conf=0.82)

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Research works printed but not linked: 1

  1. [17]17. Madeira MF, et al. (2013) MyD88 is essential for alveolar bone loss induced by Ag- gregatibacter actinomycetemcomitans lipopolysaccharide in mice. Mol Oral Microbiol 28(6):415-424.

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Authors
Stacy, A., Everett, J., Jorth, P., Trivedi, U., Rumbaugh, K. P., & Whiteley, M.
Affiliations
  • The University of Texas at Austin (US)
  • Texas Tech University (US)
Venue
Proceedings of the National Academy of Sciences
Published
2014-05-13
Volume
111
Issue
21
Pages
7819-7824
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2088151791
Cited by
192
References
58
Citations by year
2026: 4 · 2025: 12 · 2024: 22 · 2023: 16 · 2022: 14 · 2021: 12 · 2020: 19 · 2019: 20 · 2018: 12 · 2017: 21 · 2016: 18 · 2015: 15 · 2014: 7
FWCI
8.34
Type
journal article
Language
en
Open access
Locations
  • Proceedings of the National Academy of Sciences (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health
  • National Institute of Dental and Craniofacial Research (R01DE020100)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Bacterial biofilms and quorum sensing
  • Health Sciences › Dentistry › Periodontics › Oral microbiology and periodontitis research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Bacterial Genetics and Biotechnology
Keywords
Aggregatibacter actinomycetemcomitans, Streptococcus gordonii, co-infection, cross-feeding, hydrogen peroxide, dispersin B, biofilm dispersal, fight-or-flight response, oral infection, virulence
MeSH terms
Animals, Bacterial Proteins, Catalase, Glycoside Hydrolases, Hydrogen Peroxide, Virulence, Aggregatibacter actinomycetemcomitans, Biofilms, Lactic Acid, Microarray Analysis, Mice, Streptococcus gordonii, Coinfection

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