Evidence map›Paper›PMID 25084864›Full record

ArticleEukaryotic cell2014

Ascorbic acid inhibition of Candida albicans Hsp90-mediated morphogenesis occurs via the transcriptional regulator Upc2.

Frédérique Van Hauwenhuyse, Alessandro Fiori, Patrick Van Dijck

Open access · diamondAbstract read
In one paragraph

Article in Eukaryotic cell, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed
0.5field-weighted citation impact, top 33% 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

12 citing papers in PubMed, 22 citations in OpenAlex.

  1. Article
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  6. Selection of Ethanol Tolerant Strains ofbioRxiv : the preprint server for biology · 2023
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  11. Evidence-based complementary and alternative medicine : eCAM · 2019
    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

3 authors at 1 institution in 1 country.

Frédérique Van HauwenhuyseDepartment of Molecular Microbiology, VIB, Leuven, Belgium, and Laboratory of Molecular Cell Biology, KU Leuven, Leuven, Belgium.
Alessandro FioriDepartment of Molecular Microbiology, VIB, Leuven, Belgium, and Laboratory of Molecular Cell Biology, KU Leuven, Leuven, Belgium.
Patrick Van DijckDepartment of Molecular Microbiology, VIB, Leuven, Belgium, and Laboratory of Molecular Cell Biology, KU Leuven, Leuven, Belgium Patrick.VanDijck@mmbio.vib-kuleuven.be.ORCID http://orcid.org/0000-0002-1542-897X
KU Leuven · BE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Morphogenetic transitions of the opportunistic fungal pathogen Candida albicans are influenced by temperature changes, with induction of filamentation upon a shift from 30 to 37°C. Hsp90 was identified as a major repressor of an elongated cell morphology at low temperatures, as treatment with specific inhibitors of Hsp90 results in elongated growth forms at 30°C. Elongated growth resulting from a compromised Hsp90 is considered neither hyphal nor pseudohyphal growth. It has been reported that ascorbic acid (vitamin C) interferes with the yeast-to-hypha transition in C. albicans. In the present study, we show that ascorbic acid also antagonizes the morphogenetic change caused by hampered Hsp90 function. Further analysis revealed that Upc2, a transcriptional regulator of genes involved in ergosterol biosynthesis, and Erg11, the target of azole antifungals, whose expression is in turn regulated by Upc2, are required for this antagonism. Ergosterol levels correlate with elongated growth and are reduced in cells treated with the Hsp90 inhibitor geldanamycin (GdA) and restored by cotreatment with ascorbic acid. In addition, we show that Upc2 appears to be required for ascorbic acid-mediated inhibition of the antifungal activity of fluconazole. These results identify Upc2 as a major regulator of ascorbic acid-induced effects in C. albicans and suggest an association between ergosterol content and elongated growth upon Hsp90 compromise.

Indexed as

Ascorbic AcidBenzoquinonesCandida albicansCytochrome P-450 Enzyme SystemDrug Resistance, FungalErgosterolFluconazoleFungal ProteinsGene Expression Regulation, FungalHSP90 Heat-Shock ProteinsHyphaeLactams, MacrocyclicMorphogenesisTemperatureTrans-ActivatorsAscorbic AcidBenzoquinonesCytochrome P-450 Enzyme SystemErgosterolFluconazoleFungal ProteinsgeldanamycinHSP90 Heat-Shock ProteinsLactams, MacrocyclicTrans-Activators

Identifiers

PMID25084864
PMCPMC4187652
OpenAlexW2104431688

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.