Evidence map›Paper›PMID 21300833›Full record

ArticleAntimicrobial agents and chemotherapy2011

The marine sponge-derived polyketide endoperoxide plakortide F acid mediates its antifungal activity by interfering with calcium homeostasis.

Tao Xu, Qin Feng, Melissa R Jacob, Bharathi Avula, Melanie M Mask, Scott R Baerson, Siddharth K Tripathi, Rabab Mohammed, Mark T Hamann, Ikhlas A Khan and 3 more

Open access · greenAbstract read
In one paragraph

Article in Antimicrobial agents and chemotherapy, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed
2.4field-weighted citation impact, top 12% 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

16 citing papers in PubMed, 34 citations in OpenAlex.

  1. Article
  2. Review
  3. Review
  4. Review
  5. Review
  6. Article
  7. Review
  8. Marine Bioactive Compounds againstAntibiotics (Basel, Switzerland) · 2020
    Review
  9. New RareMolecules (Basel, Switzerland) · 2020
    Article
  10. Review
  11. Article
  12. Review
  13. Antifungal and antiviral products of marine organisms.Applied microbiology and biotechnology · 2014
    Review
  14. Article
  15. Article
  16. Article
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

13 authors at 3 institutions in 1 country.

Tao XuNational Center for Natural Products Research, School of Pharmacy, University of Mississippi, University, MS 38677, USA.
Qin Feng
Melissa R Jacob
Bharathi Avula
Melanie M Mask
Scott R Baerson
Siddharth K Tripathi
Rabab Mohammed
Mark T Hamann
Ikhlas A Khan
Larry A Walker
Alice M Clark
Ameeta K Agarwal
University of Mississippi · USAgricultural Research Service · USUnited States Department of Agriculture · US

Funding

NEW DRUGS FOR OPPORTUNISTIC INFECTIOUS DISEASESR01AI027094 · NIAID · UNIVERSITY OF MISSISSIPPI · PI CLARK, ALICE M. · 1989 to 2013
$4.4M
NIAID NIH HHS R01 AI027094NIAID NIH HHS R01 AI27094
6 · The paper itself

Abstract

Plakortide F acid (PFA), a marine-derived polyketide endoperoxide, exhibits strong inhibitory activity against the opportunistic fungal pathogens Candida albicans, Cryptococcus neoformans, and Aspergillus fumigatus. In the present study, transcriptional profiling coupled with mutant and biochemical analyses were conducted using the model organism Saccharomyces cerevisiae to investigate the mechanism of action of this compound. PFA elicited a transcriptome response indicative of a Ca(2+) imbalance, affecting the expression of genes known to be responsive to altered cellular calcium levels. Several additional lines of evidence obtained supported a role for Ca(2+) in PFA's activity. First, mutants lacking calcineurin and various Ca(2+) transporters, including pumps (Pmr1 and Pmc1) and channels (Cch1 and Mid1), showed increased sensitivity to PFA. In addition, the calcineurin inhibitors FK506 and cyclosporine strongly enhanced PFA activity in wild-type cells. Furthermore, PFA activated the transcription of a lacZ reporter gene driven by the calcineurin-dependent response element. Finally, elemental analysis indicated a significant increase in intracellular calcium levels in PFA-treated cells. Collectively, our results demonstrate that PFA mediates its antifungal activity by perturbing Ca(2+) homeostasis, thus representing a potentially novel mechanism distinct from that of currently used antifungal agents.

Indexed as

Antifungal AgentsAspergillus fumigatusCalciumCandida albicansCryptococcus neoformansDioxanesHomeostasisAntifungal AgentsCalciumDioxanesplakortide F

Identifiers

PMID21300833
PMCPMC3067192
OpenAlexW2163825333

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.