Evidence map›Paper›PMID 33856484›Full record

ArticleNucleic acids research2021

5-Fluorouracil blocks quorum-sensing of biofilm-embedded methicillin-resistant Staphylococcus aureus in mice.

Ferdinand Sedlmayer, Anne-Kathrin Woischnig, Vincent Unterreiner, Florian Fuchs, Daniel Baeschlin, Nina Khanna, Martin Fussenegger

Open access · goldAbstract read
In one paragraph

Article in Nucleic acids research, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 30 papers.

0numbers the graph read from it
0cells of the map it votes in
30citing papers in PubMed
2.5field-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

30 citing papers in PubMed, 51 citations in OpenAlex.

  1. Article
  2. Review
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  7. Drug Repurposing: An Emerging Strategy inJournal of microbiology and biotechnology · 2025
    Review
  8. Article
  9. DisarmingPathogens (Basel, Switzerland) · 2025
    Review
  10. Article
  11. Article
  12. Review
  13. Effect of 5-fluorouracil onFrontiers in microbiology · 2025
    Review
  14. Article
  15. Article
  16. Article
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  18. Article
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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

7 authors at 4 institutions in 1 country.

Ferdinand SedlmayerDepartment of Biosystems Science and Engineering, ETH Zürich, Mattenstrasse 26, CH-4058 Basel, Switzerland.ORCID 0000-0001-9877-5549
Anne-Kathrin WoischnigLaboratory of Infection Biology, Department of Biomedicine, University and University Hospital Basel, Hebelstrasse 20, CH-4031 Basel, Switzerland.
Vincent UnterreinerNovartis Institutes for BioMedical Research (NIBR), Chemical Biology and Therapeutics (CBT), CH-4033, Basel, Switzerland.
Florian FuchsNovartis Institutes for BioMedical Research (NIBR), Chemical Biology and Therapeutics (CBT), CH-4033, Basel, Switzerland.
Daniel BaeschlinNovartis Institutes for BioMedical Research (NIBR), Chemical Biology and Therapeutics (CBT), CH-4033, Basel, Switzerland.
Nina KhannaLaboratory of Infection Biology, Department of Biomedicine, University and University Hospital Basel, Hebelstrasse 20, CH-4031 Basel, Switzerland.ORCID 0000-0002-2642-419X
Martin FusseneggerDepartment of Biosystems Science and Engineering, ETH Zürich, Mattenstrasse 26, CH-4058 Basel, Switzerland.ORCID 0000-0001-8545-667X
Novartis (Switzerland) · CHUniversity Hospital of Basel · CHETH Zurich · CHUniversity of Basel · CH

Funding

European Research Council 785800
6 · The paper itself

Abstract

Antibiotic-resistant pathogens often escape antimicrobial treatment by forming protective biofilms in response to quorum-sensing communication via diffusible autoinducers. Biofilm formation by the nosocomial pathogen methicillin-resistant Staphylococcus aureus (MRSA) is triggered by the quorum-sensor autoinducer-2 (AI-2), whose biosynthesis is mediated by methylthioadenosine/S-adenosylhomocysteine nucleosidase (MTAN) and S-ribosylhomocysteine lyase (LuxS). Here, we present a high-throughput screening platform for small-molecular inhibitors of either enzyme. This platform employs a cell-based assay to report non-toxic, bioavailable and cell-penetrating inhibitors of AI-2 production, utilizing engineered human cells programmed to constitutively secrete AI-2 by tapping into the endogenous methylation cycle via ectopic expression of codon-optimized MTAN and LuxS. Screening of a library of over 5000 commercial compounds yielded 66 hits, including the FDA-licensed cytostatic anti-cancer drug 5-fluorouracil (5-FU). Secondary screening and validation studies showed that 5-FU is a potent quorum-quencher, inhibiting AI-2 production and release by MRSA, Staphylococcus epidermidis, Escherichia coli and Vibrio harveyi. 5-FU efficiently reduced adherence and blocked biofilm formation of MRSA in vitro at an order-of-magnitude-lower concentration than that clinically relevant for anti-cancer therapy. Furthermore, 5-FU reestablished antibiotic susceptibility and enabled daptomycin-mediated prevention and clearance of MRSA infection in a mouse model of human implant-associated infection.

Indexed as

AnimalsBacterial ProteinsBiofilmsCarbon-Sulfur LyasesEnzyme InhibitorsFemaleFluorouracilHEK293 CellsHigh-Throughput Screening AssaysHomoserineHumansLactonesMethicillin-Resistant Staphylococcus aureusMiceMice, Inbred C57BLN-Glycosyl HydrolasesBacterial ProteinsCarbon-Sulfur LyasesEnzyme InhibitorsFluorouracilHomoserineLactonesLuxS protein, BacteriaN-Glycosyl HydrolasesN-octanoylhomoserine lactoneSmall Molecule Libraries

Identifiers

PMID33856484
PMCPMC8287944
OpenAlexW3155673500

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.