Evidence map›Paper›PMID 31069275›Full record

ArticleCommunications biology2019

Cyclization-blocked proguanil as a strategy to improve the antimalarial activity of atovaquone.

Tina S Skinner-Adams, Gillian M Fisher, Andrew G Riches, Oliver E Hutt, Karen E Jarvis, Tony Wilson, Mark von Itzstein, Pradeep Chopra, Yevgeniya Antonova-Koch, Stephan Meister and 6 more

Open access · goldAbstract read
In one paragraph

Article in Communications biology, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed
1.5field-weighted citation impact, top 18% 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

18 citing papers in PubMed, 39 citations in OpenAlex.

  1. The activity of combinations of currently used antigiardial drugs against Giardia duodenalis.Transactions of the Royal Society of Tropical Medicine and Hygiene · 2026
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  3. Biogenesis of CytochromesACS infectious diseases · 2025
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  4. Identification of a divalent metal transporter required for cellular iron metabolism in malaria parasites.Proceedings of the National Academy of Sciences of the United States of America · 2024
    Article
  5. Biogenesis of cytochromesbioRxiv : the preprint server for biology · 2024
    Article
  6. International journal of molecular sciences · 2024
    Article
  7. Coordination chemistry suggests that independently observed benefits of metformin and ZnBiometals : an international journal on the role of metal ions in biology, biochemistry, and medicine · 2024
    Article
  8. Article
  9. Article
  10. Direct tests of cytochromeProceedings of the National Academy of Sciences of the United States of America · 2023
    Article
  11. Article
  12. Article
  13. Ecdysteroids from the Stem Bark ofAntibiotics (Basel, Switzerland) · 2021
    Article
  14. Antiplasmodial activity of the natural product compounds alstonine and himbeline.International journal for parasitology. Drugs and drug resistance · 2021
    Article
  15. Article
  16. Molecular Mechanisms of Drug Resistance inAnnual review of microbiology · 2020
    Review
  17. Novel Endochin-Like Quinolones Exhibit PotentAntimicrobial agents and chemotherapy · 2020
    Article
  18. 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

16 authors at 6 institutions in 3 countries.

Tina S Skinner-Adams *1Griffith Institute for Drug Discovery, Griffith University, Nathan, QLD 4111 Australia.
Gillian M Fisher1Griffith Institute for Drug Discovery, Griffith University, Nathan, QLD 4111 Australia.
Andrew G Riches2Commonwealth Scientific and Industrial Research Organization, Biomedical Manufacturing, Clayton, VIC 3168 Australia.
Oliver E Hutt2Commonwealth Scientific and Industrial Research Organization, Biomedical Manufacturing, Clayton, VIC 3168 Australia.ORCID 0000-0002-0475-0605
Karen E Jarvis2Commonwealth Scientific and Industrial Research Organization, Biomedical Manufacturing, Clayton, VIC 3168 Australia.
Tony Wilson2Commonwealth Scientific and Industrial Research Organization, Biomedical Manufacturing, Clayton, VIC 3168 Australia.
Mark von Itzstein3Institute for Glycomics, Griffith University Gold Coast Campus, Gold Coast, QLD 4222 Australia.ORCID 0000-0001-6302-7524
Pradeep Chopra3Institute for Glycomics, Griffith University Gold Coast Campus, Gold Coast, QLD 4222 Australia.
Yevgeniya Antonova-KochSchool of Medicine, University of California, San Diego, La Jolla, CA 92093 USA.
Stephan MeisterSchool of Medicine, University of California, San Diego, La Jolla, CA 92093 USA.
Elizabeth A WinzelerSchool of Medicine, University of California, San Diego, La Jolla, CA 92093 USA.
Mary Clarke1Griffith Institute for Drug Discovery, Griffith University, Nathan, QLD 4111 Australia.
David A Fidock5Department of Microbiology and Immunology, and Division of Infectious Diseases, Department of Medicine, Columbia University Medical Center, New York, NY 10032 USA.ORCID 0000-0001-6753-8938
Jeremy N Burrows6Medicines for Malaria Venture (MMV), Route de Pré Bois 20, Geneva, 1215 Switzerland.
John H Ryan *2Commonwealth Scientific and Industrial Research Organization, Biomedical Manufacturing, Clayton, VIC 3168 Australia.
Katherine T Andrews *1Griffith Institute for Drug Discovery, Griffith University, Nathan, QLD 4111 Australia.
Griffith University · AUHealth Sciences and Nutrition · AUUniversity of California San Diego · USColumbia University Irving Medical Center · USIndianapolis Zoo · USMedicines for Malaria Venture · CH

Funding

Discovery of chemically validated malaria liver stage targetsR01AI090141 · NIAID · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI WINZELER, ELIZABETH A · 2011 to 2019
$3.4M
Defining the targets of broad intervention antimalarial agentsR01AI103058 · NIAID · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI WINZELER, ELIZABETH A · 2013 to 2016
$2.6M
NIAID NIH HHS R01 AI090141NIAID NIH HHS R01 AI103058
6 · The paper itself

Abstract

Atovaquone-proguanil (Malarone®) is used for malaria prophylaxis and treatment. While the cytochrome bc1-inhibitor atovaquone has potent activity, proguanil's action is attributed to its cyclization-metabolite, cycloguanil. Evidence suggests that proguanil has limited intrinsic activity, associated with mitochondrial-function. Here we demonstrate that proguanil, and cyclization-blocked analogue tBuPG, have potent, but slow-acting, in vitro anti-plasmodial activity. Activity is folate-metabolism and isoprenoid biosynthesis-independent. In yeast dihydroorotate dehydrogenase-expressing parasites, proguanil and tBuPG slow-action remains, while bc1-inhibitor activity switches from comparatively fast to slow-acting. Like proguanil, tBuPG has activity against

Indexed as

AnimalsAnophelesAntimalarialsAtovaquoneCyclizationDihydroorotate DehydrogenaseDose-Response Relationship, DrugDrug CombinationsElectron Transport Complex IIIEnzyme InhibitorsErythrocytesFolic AcidHep G2 CellsHumansInhibitory Concentration 50LiverAntimalarialsAtovaquoneatovaquone, proguanil drug combinationcycloguanilDihydroorotate DehydrogenaseDrug CombinationsElectron Transport Complex IIIEnzyme InhibitorsFolic AcidOxidoreductases Acting on CH-CH Group DonorsProguanilTerpenesTriazinesDiseasesDrug discovery

Identifiers

PMID31069275
PMCPMC6499835
OpenAlexW2942759698

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.