Evidence map›Paper›PMID 26593271›Full record

ArticleScientific reports2015

Mechanistic analysis of a synthetic inhibitor of the Pseudomonas aeruginosa LasI quorum-sensing signal synthase.

O Lidor, A Al-Quntar, E C Pesci, D Steinberg

Erratum issuedOpen access · goldAbstract read
In one paragraph

Article in Scientific reports, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 33 papers.

0numbers the graph read from it
0cells of the map it votes in
33citing 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

33 citing papers in PubMed, 72 citations in OpenAlex.

  1. Review
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  7. Beyond Antibiotics: What the Future Holds.Antibiotics (Basel, Switzerland) · 2024
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  11. bioRxiv : the preprint server for biology · 2023
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  13. Review
  14. Antibiofilm properties of cathelicidin LL-37: an in-depth review.World journal of microbiology & biotechnology · 2023
    Review
  15. Article
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  17. Review
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

4 authors at 2 institutions in 2 countries.

O LidorBiofilm Research Laboratory, Institute of Dental Sciences, Faculty of Dental Medicine, The Hebrew University of Jerusalem, Jerusalem, Israel.
A Al-QuntarBiofilm Research Laboratory, Institute of Dental Sciences, Faculty of Dental Medicine, The Hebrew University of Jerusalem, Jerusalem, Israel.
E C PesciDepartment of Microbiology and Immunology, Brody School of Medicine, East Carolina University, USA.
D SteinbergBiofilm Research Laboratory, Institute of Dental Sciences, Faculty of Dental Medicine, The Hebrew University of Jerusalem, Jerusalem, Israel.
Hebrew University of Jerusalem · ILEast Carolina University · US

Funding

Studies on the Pseudomonas aeruginosa Cell-to-Cell Signal PQSR01AI076272 · NIAID · EAST CAROLINA UNIVERSITY · PI PESCI, EVERETT C · 2008 to 2017
$2.8M
NIAID NIH HHS R01 AI076272
6 · The paper itself

Abstract

Pseudomonas aeruginosa is an opportunistic Gram-negative pathogen responsible for many human infections. LasI is an acyl-homoserine lactone synthase that produces a quorum-sensing (QS) signal that positively regulates numerous P. aeruginosa virulence determinants. The inhibition of the LasI protein is therefore an attractive drug target. In this study, a novel in silico to in vitro complementation was applied to screen thiazolidinedione-type compounds for their ability to inhibit biofilm formation at concentrations not affecting bacterial growth. The compound (z)-5-octylidenethiazolidine-2, 4-dione (TZD-C8) was a strong inhibitor of biofilm formation and chosen for further study. Structural exploration of in silico docking predicted that the compound had high affinity for the LasI activity pocket. The TZD-C8 compound was also predicted to create hydrogen bonds with residues Arg30 and Ile107. Site-directed mutagenesis (SDM) of these two sites demonstrated that TZD-C8 inhibition was abolished in the lasI double mutant PAO-R30D, I107S. In addition, in vitro swarming motility and quorum sensing signal production were affected by TZD-C 8, confirming this compound alters the cell to cell signalling circuitry. Overall, this novel inhibitor of P. aeruginosa quorum sensing shows great promise and validates our mechanistic approach to discovering inhibitors of LuxI-type acyl-homoserine lactone synthases.

Indexed as

Gene Expression Regulation, BacterialAnti-Bacterial AgentsBacterial ProteinsBiofilmsGenetic Complementation TestHydrogen BondingMolecular Docking SimulationMutagenesis, Site-DirectedMutationPlasmidsProtein Interaction Domains and MotifsProtein Structure, SecondaryPseudomonas aeruginosaQuorum SensingThiazolidinedionesTransformation, BacterialAnti-Bacterial AgentsBacterial ProteinsLasI protein, Pseudomonas aeruginosaThiazolidinediones

Identifiers

PMID26593271
PMCPMC4655403
OpenAlexW2346091783

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.