Evidence map›Paper›PMID 28320314›Full record

ArticleBMC genomics2017

Quorum sensing of Streptococcus mutans is activated by Aggregatibacter actinomycetemcomitans and by the periodontal microbiome.

Szymon P Szafrański, Zhi-Luo Deng, Jürgen Tomasch, Michael Jarek, Sabin Bhuju, Manfred Rohde, Helena Sztajer, Irene Wagner-Döbler

Open access · goldAbstract read
In one paragraph

Article in BMC genomics, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed
2.9field-weighted citation impact, top 9% 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

21 citing papers in PubMed, 40 citations in OpenAlex.

  1. Characterization of a Novel Quorum QuencherPlants (Basel, Switzerland) · 2026
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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

8 authors at 2 institutions in 1 country.

Szymon P SzafrańskiMicrobial Communication, Helmholtz-Center for Infection Research, Braunschweig, Germany.
Zhi-Luo DengMicrobial Communication, Helmholtz-Center for Infection Research, Braunschweig, Germany.
Jürgen TomaschMicrobial Communication, Helmholtz-Center for Infection Research, Braunschweig, Germany.
Michael JarekGenome Analytics, Helmholtz Centre for Infection Research, Braunschweig, Germany.
Sabin BhujuGenome Analytics, Helmholtz Centre for Infection Research, Braunschweig, Germany.
Manfred RohdeCentral Facility for Microscopy, Helmholtz Centre for Infection Research, Braunschweig, Germany.
Helena SztajerMicrobial Communication, Helmholtz-Center for Infection Research, Braunschweig, Germany.
Irene Wagner-DöblerMicrobial Communication, Helmholtz-Center for Infection Research, Braunschweig, Germany. Irene.Wagner-Doebler@helmholtz-hzi.de.
Helmholtz Centre for Infection Research · DEMedizinische Hochschule Hannover · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe oral cavity is inhabited by complex microbial communities forming biofilms that can cause caries and periodontitis. Cell-cell communication might play an important role in modulating the physiologies of individual species, but evidence so far is limited.

resultsHere we demonstrate that a pathogen of the oral cavity, Aggregatibacter actinomycetemcomitans (A. act.), triggers expression of the quorum sensing (QS) regulon of Streptococcus mutans, a well-studied model organism for cariogenic streptococci, in dual-species biofilms grown on artificial saliva. The gene for the synthesis of the QS signal XIP is essential for this interaction. Transcriptome sequencing of biofilms revealed that S. mutans up-regulated the complete QS regulon (transformasome and mutacins) in the presence of A. act. and down-regulated oxidative stress related genes. A.act. required the presence of S. mutans for growth. Fimbriae and toxins were its most highly expressed genes and up-regulation of anaerobic metabolism, chaperones and iron acquisition genes was observed in co-culture. Metatranscriptomes from periodontal pockets showed highly variable levels of S. mutans and low levels of A. act.. Transcripts of the alternative sigma-factor SigX, the key regulator of QS in S. mutans, were significantly enriched in periodontal pockets compared to single cultures (log

conclusionThe data show that the complete QS regulon of S. mutans can be induced by an unrelated oral pathogen and S. mutans may be competent in oral biofilms in vivo.

Indexed as

Microbial InteractionsMicrobiotaQuorum SensingAggregatibacter actinomycetemcomitansBacterial ProteinsBiofilmsCluster AnalysisGene Expression ProfilingGene Expression Regulation, BacterialPeriodontal PocketPeriodontiumSigma FactorStreptococcus mutansTranscriptomeBacterial ProteinsSigma Factor

Identifiers

PMID28320314
PMCPMC5359896
OpenAlexW2602410666

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.