Evidence map›Paper›PMID 20439478›Full record

ArticleInfection and immunity2010

Role of trehalose biosynthesis in Aspergillus fumigatus development, stress response, and virulence.

Nadia Al-Bader, Ghyslaine Vanier, Hong Liu, Fabrice N Gravelat, Mirjam Urb, Christopher M-Q Hoareau, Paolo Campoli, Joseé Chabot, Scott G Filler, Donald C Sheppard

Open access · greenAbstract read
In one paragraph

Article in Infection and immunity, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 68 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
68citing papers in PubMed, 1 pooled it
4.0field-weighted citation impact, top 6% 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

68 citing papers in PubMed, 1 synthesis or guideline pooled it, 163 citations in OpenAlex.

  1. Pooled it
  2. Temperature duringbioRxiv : the preprint server for biology · 2026
    Article
  3. Article
  4. Review
  5. Structural and Mutational Analyses of Trehalose Synthase fromJournal of agricultural and food chemistry · 2024
    Article
  6. Structures of trehalose-6-phosphate synthase, Tps1, from the fungal pathogenProceedings of the National Academy of Sciences of the United States of America · 2024
    Article
  7. Review
  8. Article
  9. Frontiers in cellular and infection microbiology · 2024
    Article
  10. Compatible solutes determine the heat resistance of conidia.Fungal biology and biotechnology · 2023
    Article
  11. Article
  12. Review
  13. Article
  14. Article
  15. Review
  16. Article
  17. Article
  18. Co-Operative Biofilm Interactions betweenJournal of fungi (Basel, Switzerland) · 2022
    Article
  19. Article
  20. Article

8 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

10 authors at 3 institutions in 2 countries.

Nadia Al-BaderDepartment of Microbiology and Immunology, Faculty of Medicine, McGill University, Montreal, Quebec, Canada.
Ghyslaine Vanier
Hong Liu
Fabrice N Gravelat
Mirjam Urb
Christopher M-Q Hoareau
Paolo Campoli
Joseé Chabot
Scott G Filler
Donald C Sheppard
McGill University · CAUCLA Medical Center · USUniversity of California, Los Angeles · US

Funding

Transcriptional regulation of A. fumigatus virulenceR01AI073829 · NIAID · LUNDQUIST INSTITUTE FOR BIOMEDICAL INNOVATION AT HARBOR-UCLA MEDICAL CENTER · PI FILLER, SCOTT G · 2007 to 2015
$2.8M
CIHRNIAID NIH HHS N01 AI030041NIAID NIH HHS R01 AI073829NIAID NIH HHS R01AI073829
6 · The paper itself

Abstract

Aspergillus fumigatus is a pathogenic mold which causes invasive, often fatal, pulmonary disease in immunocompromised individuals. Recently, proteins involved in the biosynthesis of trehalose have been linked with virulence in other pathogenic fungi. We found that the trehalose content increased during the developmental life cycle of A. fumigatus, throughout which putative trehalose synthase genes tpsA and tpsB were significantly expressed. The trehalose content of A. fumigatus hyphae also increased after heat shock but not in response to other stressors. This increase in trehalose directly correlated with an increase in expression of tpsB but not tpsA. However, deletion of both tpsA and tpsB was required to block trehalose accumulation during development and heat shock. The DeltatpsAB double mutant had delayed germination at 37 degrees C, suggesting a developmental defect. At 50 degrees C, the majority of DeltatpsAB spores were found to be nonviable, and those that were viable had severely delayed germination, growth, and subsequent sporulation. DeltatpsAB spores were also susceptible to oxidative stress. Surprisingly, the DeltatpsAB double mutant was hypervirulent in a murine model of invasive aspergillosis, and this increased virulence was associated with alterations in the cell wall and resistance to macrophage phagocytosis. Thus, while trehalose biosynthesis is required for a number of biological processes that both promote and inhibit virulence, in A. fumigatus the predominant effect is a reduction in pathogenicity. This finding contrasts sharply with those for other fungi, in which trehalose biosynthesis acts to enhance virulence.

Indexed as

AnimalsAntifungal AgentsAspergillus fumigatusFlow CytometryGene Expression Regulation, FungalGenes, FungalGlucosyltransferasesInvasive Pulmonary AspergillosisMaleMiceMice, Inbred BALB CMicrobial Sensitivity TestsMicroscopy, Electron, TransmissionOxidative StressReverse Transcriptase Polymerase Chain ReactionTrehaloseAntifungal AgentsGlucosyltransferasesTrehalosetrehalose-6-phosphate synthase

Identifiers

PMID20439478
PMCPMC2897364
OpenAlexW2143596010

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.