Evidence map›Paper›PMID 39567551›Full record

ArticleNPJ biofilms and microbiomes2024

Staphylococcus epidermidis alters macrophage polarization and phagocytic uptake by extracellular DNA release in vitro.

Samira Weißelberg, Anna Both, Antonio Virgilio Failla, Jiabin Huang, Stefan Linder, Denise Ohnezeit, Patricia Bartsch, Martin Aepfelbacher, Holger Rohde

Abstract read
In one paragraph

Article in NPJ biofilms and microbiomes, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed
–field-weighted citation impact
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

9 citing papers in PubMed.

  1. Article
  2. Article
  3. Biofilm Associated Persistence and Drug Tolerance in Mycobacteria Within Host Microenvironments.APMIS : acta pathologica, microbiologica, et immunologica Scandinavica · 2026
    Review
  4. Review
  5. Article
  6. Article
  7. Highly Alkaline-ResistantMicroorganisms · 2025
    Article
  8. Review
  9. Review
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

9 authors.

Samira WeißelbergInstitut für Medizinische Mikrobiologie, Virologie und Hygiene, Universitätsklinikum Hamburg-Eppendorf (UKE), Hamburg, Germany.ORCID http://orcid.org/0000-0001-7997-4999
Anna BothInstitut für Medizinische Mikrobiologie, Virologie und Hygiene, Universitätsklinikum Hamburg-Eppendorf (UKE), Hamburg, Germany.
Antonio Virgilio FaillaUKE Microscopy Imaging Facility (Umif), Universitätsklinikum Hamburg-Eppendorf (UKE), Hamburg, Germany.
Jiabin HuangInstitut für Medizinische Mikrobiologie, Virologie und Hygiene, Universitätsklinikum Hamburg-Eppendorf (UKE), Hamburg, Germany.
Stefan LinderInstitut für Medizinische Mikrobiologie, Virologie und Hygiene, Universitätsklinikum Hamburg-Eppendorf (UKE), Hamburg, Germany.
Denise OhnezeitInstitut für Medizinische Mikrobiologie, Virologie und Hygiene, Universitätsklinikum Hamburg-Eppendorf (UKE), Hamburg, Germany.ORCID http://orcid.org/0000-0002-2346-2545
Patricia BartschInstitut für Medizinische Mikrobiologie, Virologie und Hygiene, Universitätsklinikum Hamburg-Eppendorf (UKE), Hamburg, Germany.ORCID http://orcid.org/0000-0002-6946-4757
Martin AepfelbacherInstitut für Medizinische Mikrobiologie, Virologie und Hygiene, Universitätsklinikum Hamburg-Eppendorf (UKE), Hamburg, Germany.
Holger RohdeInstitut für Medizinische Mikrobiologie, Virologie und Hygiene, Universitätsklinikum Hamburg-Eppendorf (UKE), Hamburg, Germany. rohde@uke.de.ORCID http://orcid.org/0000-0001-8587-4433

Funding

Damp Stiftung 2013-2019
6 · The paper itself

Abstract

Biofilm formation shields Staphylococcus epidermidis from host defense mechanisms, contributing to chronic implant infections. Using wild-type S. epidermidis 1457, a PIA-negative mutant (1457-M10), and an eDNA-negative mutant (1457ΔatlE), this study examined the influence of biofilm matrix components on human monocyte-derived macrophage (hMDM) interactions. The wild-type strain was resistant to phagocytosis and induced an anti-inflammatory response in hMDMs, while both mutants were more susceptible to phagocytosis and triggered a pro-inflammatory response. Removing eDNA from the 1457 biofilm matrix increased hMDM uptake and a pro-inflammatory reaction, whereas adding eDNA to the 1457ΔatlE mutant reduced phagocytosis and promoted an anti-inflammatory response. Inhibiting TLR9 enhanced bacterial uptake and induced a pro-inflammatory response in hMDMs exposed to wild-type S. epidermidis. This study highlights the critical role of eDNA in immune evasion and the central role of TLR9 in modulating macrophage responses, advancing the understanding of implant infections.

Indexed as

BiofilmsDNA, BacterialMacrophagesPhagocytosisStaphylococcus epidermidisToll-Like Receptor 9HumansImmune EvasionStaphylococcal InfectionsDNA, BacterialTLR9 protein, humanToll-Like Receptor 9

Identifiers

PMID39567551
PMCPMC11579364

What OpenQuestion holds

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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.