Evidence map›Paper›PMID 16861653›Full record

ArticleInfection and immunity2006

Inactivation of a two-component signal transduction system, SaeRS, eliminates adherence and attenuates virulence of Staphylococcus aureus.

Xudong Liang, Chuanxin Yu, Junsong Sun, Hong Liu, Christina Landwehr, David Holmes, Yinduo Ji

Open access · greenAbstract read
In one paragraph

Article in Infection and immunity, 2006. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 92 papers.

0numbers the graph read from it
0cells of the map it votes in
92citing papers in PubMed
3.5field-weighted citation impact, top 7% 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

92 citing papers in PubMed, 144 citations in OpenAlex.

  1. Article
  2. Article
  3. The Pathogenicity Mechanisms ofInternational journal of molecular sciences · 2025
    Review
  4. Review
  5. Article
  6. Article
  7. Activation of themBio · 2025
    Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Phenotypic and genetic characterization of daptomycin non-susceptibleFrontiers in cellular and infection microbiology · 2024
    Article
  13. Review
  14. SaeR as a novel target for antivirulence therapy againstEmerging microbes & infections · 2023
    Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Characterization and virulence ofFrontiers in microbiology · 2023
    Article
  20. A Review of Biofilm Formation ofAntibiotics (Basel, Switzerland) · 2022
    Review

32 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

7 authors at 2 institutions in 1 country.

Xudong LiangDepartment of Veterinary and Biomedical Sciences, College of Veterinary Medicine, University of Minnesota, 1971 Commonwealth Ave., St. Paul, Minnesota 55108, USA.
Chuanxin Yu
Junsong Sun
Hong Liu
Christina Landwehr
David Holmes
Yinduo Ji
University of Minnesota · USGlaxoSmithKline (United States) · US

Funding

A Novel Essential Regulator of Staphylococcus aureusR01AI057451 · NIAID · UNIVERSITY OF MINNESOTA TWIN CITIES · PI JI, YINDUO · 2005 to 2008
$969k
NIAID NIH HHS AI057451NIAID NIH HHS R01 AI057451
6 · The paper itself

Abstract

Staphylococcus aureus is a major human and animal pathogen. During infection, this organism not only is able to attach to and enter host cells by using its cell surface-associated factors but also exports toxins to induce apoptosis and kill invaded cells. In this study, we identified the regulon of a two-component signal transduction system, SaeRS, and demonstrated that the SaeRS system is required for S. aureus to cause infection both in vitro and in vivo. Using microarray and real-time reverse transcriptase PCR analyses, we found that SaeRS regulates the expression of genes involved in adhesion and invasion (such as those encoding fibronectin-binding proteins and fibrinogen-binding proteins) and genes encoding alpha-, beta-, and gamma-hemolysins. Surprisingly, we found that SaeRS represses the Agr regulatory system since the mutation of saeS up-regulates agrA expression, which was confirmed by using an agr promoter-reporter fusion system. More importantly, we demonstrated that inactivation of the SaeRS system significantly decreases the bacterium-induced apoptosis and/or death of lung epithelial cells (A549) and attenuates virulence in a murine infection model. Moreover, we found that inactivation of the SaeRS system eliminates staphylococcal adhesion and internalization of lung epithelial cells. We also found that both a novel hypothetical protein (the SA1000 protein) and a bifunctional protein (Efb), which binds to extracellular fibrinogen and complement factor C3, might partially contribute to bacterial adhesion to and invasion of epithelial cells. Our results indicate that activation of the SaeRS system may be required for S. aureus to adhere to and invade epithelial cells.

Indexed as

Bacterial AdhesionMutationSignal TransductionAnimalsBacterial ProteinsCell LineEpithelial CellsFemaleGene Expression Regulation, BacterialHumansLungMiceOligonucleotide Array Sequence AnalysisPyelonephritisStaphylococcal InfectionsStaphylococcus aureusBacterial ProteinsSaeR protein, Staphylococcus aureusTranscription Factors

Identifiers

PMID16861653
PMCPMC1539584
OpenAlexW2105665201

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.