Evidence map›Paper›PMID 17853941›Full record

ArticleThe Journal of clinical investigation2007

Targeted gene deletion in Candida parapsilosis demonstrates the role of secreted lipase in virulence.

Attila Gácser, David Trofa, Wilhelm Schäfer, Joshua D Nosanchuk

Open access · bronzeAbstract read
In one paragraph

Article in The Journal of clinical investigation, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 69 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
69citing papers in PubMed, 1 pooled it
4.2field-weighted citation impact, top 5% 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

69 citing papers in PubMed, 1 synthesis or guideline pooled it, 150 citations in OpenAlex.

  1. Pooled it
  2. Current Insights intoJournal of fungi (Basel, Switzerland) · 2025
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  4. Shining a light onmSphere · 2024
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  7. Journal of fungi (Basel, Switzerland) · 2023
    Review
  8. Contribution ofInfection and drug resistance · 2023
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  9. Proteomic Analysis ofPathogens (Basel, Switzerland) · 2022
    Article
  10. Article
  11. Review
  12. Article
  13. Article
  14. Genetic Manipulation as a Tool to UnravelJournal of fungi (Basel, Switzerland) · 2021
    Review
  15. Virulence of ClinicalPathogens (Basel, Switzerland) · 2021
    Article
  16. AJournal of fungi (Basel, Switzerland) · 2021
    Article
  17. Journal of fungi (Basel, Switzerland) · 2021
    Article
  18. A decade after the emergence of Candida auris: what do we know?European journal of clinical microbiology & infectious diseases : official publication of the European Society of Clinical Microbiology · 2020
    Review
  19. Article
  20. Article

9 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

4 authors at 3 institutions in 2 countries.

Attila GácserDepartment of Medicine, Division of Infectious Diseases, Albert Einstein College of Medicine, Yeshiva University, New York, New York, USA. gacsera@gmail.com
David Trofa
Wilhelm Schäfer
Joshua D Nosanchuk
Yeshiva University · USAlbert Einstein College of Medicine · USUniversität Hamburg · DE

Funding

Immunology/Pathology CoreP30AI051519 · NIAID · YESHIVA UNIVERSITY · PI GOLDSTEIN, HARRIS · 2003 to 2013
$18.6M
Biology of Fungal MelaninR01AI052733 · NIAID · YESHIVA UNIVERSITY · PI CASADEVALL, ARTURO · 2003 to 2019
$6.6M
Antibody Protection in HistoplamosisR01AI056070 · NIAID · ALBERT EINSTEIN COL OF MED YESHIVA UNIV · PI NOSANCHUK, JOSHUA D · 2005 to 2009
$1.8M
NIAID NIH HHS AI056070-01A2NIAID NIH HHS AI-51519NIAID NIH HHS AI52733NIAID NIH HHS P30 AI051519NIAID NIH HHS R01 AI052733NIAID NIH HHS R01 AI056070
6 · The paper itself

Abstract

Candida parapsilosis is a major cause of human disease, yet little is known about the pathogen's virulence. We have developed an efficient gene deletion system for C. parapsilosis based on the repeated use of the dominant nourseothricin resistance marker (caSAT1) and its subsequent deletion by FLP-mediated, site-specific recombination. Using this technique, we deleted the lipase locus in the C. parapsilosis genome consisting of adjacent genes CpLIP1 and CpLIP2. Additionally we reconstructed the CpLIP2 gene, which restored lipase activity. Lipolytic activity was absent in the null mutants, whereas the WT, heterozygous, and reconstructed mutants showed similar lipase production. Biofilm formation was inhibited with lipase-negative mutants and their growth was significantly reduced in lipid-rich media. The knockout mutants were more efficiently ingested and killed by J774.16 and RAW 264.7 macrophage-like cells. Additionally, the lipase-negative mutants were significantly less virulent in infection models that involve inoculation of reconstituted human oral epithelium or murine intraperitoneal challenge. These studies represent what we believe to be the first targeted disruption of a gene in C. parapsilosis and show that C. parapsilosis-secreted lipase is involved in disease pathogenesis. This efficient system for targeted gene deletion holds great promise for rapidly enhancing our knowledge of the biology and virulence of this increasingly common invasive fungal pathogen.

Indexed as

AnimalsBiofilmsCandidaCandidiasisCells, CulturedFungal ProteinsGene DeletionGene TargetingHumansLipaseMiceMouth MucosaPhagocytosisVirulenceFungal ProteinsLipase

Identifiers

PMID17853941
PMCPMC1974868
OpenAlexW2134687901

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.