Evidence map›Paper›PMID 32738587›Full record

ArticleInternational journal for parasitology. Drugs and drug resistance2020

A conserved coccidian gene is involved in Toxoplasma sensitivity to the anti-apicomplexan compound, tartrolon E.

Gregory D Bowden, Patricia M Reis, Maxwell B Rogers, Rachel M Bone Relat, Kelly A Brayton, Sarah K Wilson, Bruno Martorelli Di Genova, Laura J Knoll, Felix J Nepveux V, Albert K Tai and 3 more

Open access · goldAbstract read
In one paragraph

Article in International journal for parasitology. Drugs and drug resistance, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.

0numbers the graph read from it
0cells of the map it votes in
5citing papers in PubMed
1.5field-weighted citation impact, top 21% 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

5 citing papers in PubMed, 10 citations in OpenAlex.

  1. Applications of CRISPR in Parasitology.Current pharmaceutical biotechnology · 2025
    Review
  2. Tulathromycin and Diclazuril Lack Efficacy againstPathogens (Basel, Switzerland) · 2023
    Article
  3. Article
  4. Article
  5. Imidocarb Dipropionate Lacks Efficacy againstPathogens (Basel, Switzerland) · 2020
    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 5 institutions in 1 country.

Gregory D BowdenDepartment of Veterinary Microbiology and Pathology, College of Veterinary Medicine, Washington State University, P.O. Box 647040, Pullman, WA, 99164-7040, USA.
Patricia M ReisDepartment of Veterinary Microbiology and Pathology, College of Veterinary Medicine, Washington State University, P.O. Box 647040, Pullman, WA, 99164-7040, USA.
Maxwell B RogersDepartment of Veterinary Microbiology and Pathology, College of Veterinary Medicine, Washington State University, P.O. Box 647040, Pullman, WA, 99164-7040, USA.
Rachel M Bone RelatDepartment of Veterinary Microbiology and Pathology, College of Veterinary Medicine, Washington State University, P.O. Box 647040, Pullman, WA, 99164-7040, USA.
Kelly A BraytonDepartment of Veterinary Microbiology and Pathology, College of Veterinary Medicine, Washington State University, P.O. Box 647040, Pullman, WA, 99164-7040, USA.
Sarah K WilsonDepartment of Medical Microbiology and Immunology, University of Wisconsin - Madison, 1550 Linden Dr Madison, WI, 53706, USA.
Bruno Martorelli Di GenovaDepartment of Medical Microbiology and Immunology, University of Wisconsin - Madison, 1550 Linden Dr Madison, WI, 53706, USA.
Laura J KnollDepartment of Medical Microbiology and Immunology, University of Wisconsin - Madison, 1550 Linden Dr Madison, WI, 53706, USA.
Felix J Nepveux VDivision of Geographic Medicine and Infectious Disease, Tufts Medical Center, 60 Tremont St 3rd Fl, Boston, MA, 02116, USA.
Albert K TaiDepartment of Immunology, Tufts University School of Medicine, 136 Harrison Ave, Boston, MA, 02111, USA.
Timothy R RamadharDepartment of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, 240 Longwood Avenue C-213, Boston, MA, 02115, USA.
Jon ClardyDepartment of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, 240 Longwood Avenue C-213, Boston, MA, 02115, USA.
Roberta M O'ConnorDepartment of Veterinary Microbiology and Pathology, College of Veterinary Medicine, Washington State University, P.O. Box 647040, Pullman, WA, 99164-7040, USA. Electronic address: rob.oconnor@wsu.edu.
Washington State University · USUniversity of Wisconsin–Madison · USHarvard University · USTufts Medical Center · USTufts University · US

Funding

Investigation of a shipworm endosymbiont compound with activity against the AIDS-associated pathogens Cryptosporidium and ToxoplasmaR21AT009174 · NCCIH · WASHINGTON STATE UNIVERSITY · PI O'CONNOR, ROBERTA M · 2016 to 2017
$468k
NCCIH NIH HHS R21 AT009174
6 · The paper itself

Abstract

New treatments for the diseases caused by apicomplexans are needed. Recently, we determined that tartrolon E (trtE), a secondary metabolite derived from a shipworm symbiotic bacterium, has broad-spectrum anti-apicomplexan parasite activity. TrtE inhibits apicomplexans at nM concentrations in vitro, including Cryptosporidium parvum, Toxoplasma gondii, Sarcocystis neurona, Plasmodium falciparum, Babesia spp. and Theileria equi. To investigate the mechanism of action of trtE against apicomplexan parasites, we examined changes in the transcriptome of trtE-treated T. gondii parasites. RNA-Seq data revealed that the gene, TGGT1_272370, which is broadly conserved in the coccidia, is significantly upregulated within 4 h of treatment. Using bioinformatics and proteome data available on ToxoDB, we determined that the protein product of this tartrolon E responsive gene (trg) has multiple transmembrane domains, a phosphorylation site, and localizes to the plasma membrane. Deletion of trg in a luciferase-expressing T. gondii strain by CRISPR/Cas9 resulted in a 68% increase in parasite resistance to trtE treatment, supporting a role for the trg protein product in the response of T. gondii to trtE treatment. Trg is conserved in the coccidia, but not in more distantly related apicomplexans, indicating that this response to trtE may be unique to the coccidians, and other mechanisms may be operating in other trtE-sensitive apicomplexans. Uncovering the mechanisms by which trtE inhibits apicomplexans may identify shared pathways critical to apicomplexan parasite survival and advance the search for new treatments.

Indexed as

Antiparasitic AgentsCryptosporidiosisCryptosporidiumCryptosporidium parvumDrug ResistanceHumansLactonesSarcocystisToxoplasmaAntiparasitic AgentsLactonestartrolon EAnti-apicomplexanCRISPR/Cas9Drug discoveryNatural productsTartrolon EToxoplasma

Identifiers

PMID32738587
PMCPMC7394737
OpenAlexW3045308059

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.