Evidence map›Paper›PMID 17178785›Full record

ArticleInfection and immunity2007

Pseudolipasin A is a specific inhibitor for phospholipase A2 activity of Pseudomonas aeruginosa cytotoxin ExoU.

Vincent T Lee, Stefan Pukatzki, Hiromi Sato, Eriya Kikawada, Anastasia A Kazimirova, Jin Huang, Xiaohua Li, Jonathan P Arm, Dara W Frank, Stephen Lory

Open access · greenAbstract read
In one paragraph

Article in Infection and immunity, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 45 papers.

0numbers the graph read from it
0cells of the map it votes in
45citing papers in PubMed
1.9field-weighted citation impact, top 15% 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

45 citing papers in PubMed, 74 citations in OpenAlex.

  1. A novel approach to combatMicrobiology spectrum · 2026
    Article
  2. Molecular Mechanisms Underlying the Pathogenicity ofMedicina (Kaunas, Lithuania) · 2026
    Review
  3. Review
  4. Review
  5. Review
  6. Cells · 2023
    Review
  7. Review
  8. Article
  9. Article
  10. Article
  11. Using Structure-guided Fragment-Based Drug Discovery to TargetFrontiers in molecular biosciences · 2022
    Review
  12. Perspectives on theToxins · 2021
    Review
  13. Review
  14. Baicalin Represses Type Three Secretion System ofMolecules (Basel, Switzerland) · 2021
    Article
  15. Review
  16. Article
  17. Review
  18. Prevalence of ExoY Activity inFrontiers in microbiology · 2021
    Article
  19. Article
  20. Microorganisms · 2019
    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

10 authors at 4 institutions in 1 country.

Vincent T LeeDepartment of Cell Biology and Molecular Genetics, University of Maryland, College Park, MD 20742, USA. vtlee@umd.edu
Stefan Pukatzki
Hiromi Sato
Eriya Kikawada
Anastasia A Kazimirova
Jin Huang
Xiaohua Li
Jonathan P Arm
Dara W Frank
Stephen Lory
Harvard University · USDana-Farber Cancer Institute · USMedical College of Wisconsin · USBroad Institute · US

Funding

Activity of Pseudomonas Type III ToxinsR01AI049577 · NIAID · MEDICAL COLLEGE OF WISCONSIN · PI FRANK, DARA W. · 2001 to 2011
$3.6M
Group V Phospholipase A2 and Pulmonary InflammationR01HL070946 · NHLBI · BRIGHAM AND WOMEN'S HOSPITAL · PI KATZ, HOWARD R · 2003 to 2012
$3.2M
Virulence inhibitors as candidate therapeutics in CFR21HL079393 · NHLBI · HARVARD UNIVERSITY (MEDICAL SCHOOL) · PI LORY, STEPHEN · 2004 to 2005
$466k
Small molecule inhibitors of bacterial secretion systemK22AI065828 · NIAID · UNIV OF MARYLAND, COLLEGE PARK · PI LEE, VINCENT T · 2007 to 2008
$268k
NHLBI NIH HHS R01 HL070946NHLBI NIH HHS R01-HL070946NHLBI NIH HHS R21 HL079393NHLBI NIH HHS R21-HL079393NIAID NIH HHS K22 AI065828NIAID NIH HHS R01 AI049577NIAID NIH HHS R01-AI49577
6 · The paper itself

Abstract

A number of bacterial pathogens utilize the type III secretion pathway to deliver effector proteins directly into the host cell cytoplasm. Certain strains of Pseudomonas aeruginosa associated with acute infections express a potent cytotoxin, exoenzyme U (ExoU), that is delivered via the type III secretion pathway directly into contacting host cells. Once inside the mammalian cell, ExoU rapidly lyses the intoxicated cells via its phospholipase A(2) (PLA(2)) activity. A high-throughput cell-based assay was developed to screen libraries of compounds for those capable of protecting cells against the cytotoxic effects of ExoU. A number of compounds were identified in this screen, including one group that blocks the intracellular activity of ExoU. In addition, these compounds specifically inhibited the PLA(2) activity of ExoU in vitro, whereas eukaryotic secreted PLA(2) and cytosolic PLA(2) were not inhibited. This novel inhibitor of ExoU-specific PLA(2) activity, named pseudolipasin A, may provide a new lead for virulence factor-based therapeutic design.

Indexed as

AnimalsBacterial ProteinsCHO CellsCricetinaeCricetulusCytotoxinsEnzyme InhibitorsFluorenesPhospholipases APhospholipases A2Pseudomonas aeruginosaVirulence FactorsBacterial ProteinsCytotoxinsEnzyme InhibitorsFluorenesPhospholipases APhospholipases A2pseudolipasin Apseudomonas exoprotein A protein, Pseudomonas aeruginosaVirulence Factors

Identifiers

PMID17178785
PMCPMC1828555
OpenAlexW2135097398

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.