Evidence map›Paper›PMID 32099045›Full record

ArticleScientific reports2020

Virtual screening as a tool to discover new β-haematin inhibitors with activity against malaria parasites.

Ana Carolina C de Sousa, Jill M Combrinck, Keletso Maepa, Timothy J Egan

Open access · goldAbstract read
In one paragraph

Article in Scientific reports, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed, 1 pooled it
4.0field-weighted citation impact, top 5% 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

21 citing papers in PubMed, 1 synthesis or guideline pooled it, 46 citations in OpenAlex.

  1. Pooled it
  2. Review
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  10. Antimalarial drug discovery: progress and approaches.Nature reviews. Drug discovery · 2023
    Review
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  15. In Silico Drug Repurposing Approach: Investigation ofMolecules (Basel, Switzerland) · 2022
    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

4 authors at 1 institution in 1 country.

Ana Carolina C de SousaUniversity of Cape Town, Department of Chemistry, Rondebosch, 7701, South Africa.
Jill M CombrinckUniversity of Cape Town, Division of Pharmacology, Department of Medicine, Observatory, 7925, South Africa.
Keletso MaepaUniversity of Cape Town, Division of Pharmacology, Department of Medicine, Observatory, 7925, South Africa.
Timothy J EganUniversity of Cape Town, Department of Chemistry, Rondebosch, 7701, South Africa. timothy.egan@uct.ac.za.
University of Cape Town · ZA

Funding

New tools for antimalarial target identificationR01AI143521 · NIAID · UNIVERSITY OF CAPE TOWN · PI WICHT, KATHRYN JEAN · 2019 to 2023
$709k
NIAID NIH HHS R01 AI143521
6 · The paper itself

Abstract

Malaria remains a major public health problem. With the loss of antimalarials to resistance, the malaria burden will likely continue for decades. New antimalarial scaffolds are crucial to avoid cross-resistance. Here, we present the first structure based virtual screening using the β-haematin crystal as a target for new inhibitor scaffolds by applying a docking method. The ZINC15 database was searched for compounds with high binding affinity with the surface of the β-haematin crystal using the PyRx Virtual Screening Tool. Top-ranked compounds predicted to interact with β-haematin were submitted to a second screen applying in silico toxicity and drug-likeness predictions using Osiris DataWarrior. Fifteen compounds were purchased for experimental testing. An NP-40 mediated β-haematin inhibition assay and parasite growth inhibition activity assay were performed. The benzoxazole moiety was found to be a promising scaffold for further development, showing intraparasitic haemozoin inhibition using a cellular haem fractionation assay causing a decrease in haemozoin in a dose dependent manner with a corresponding increase in exchangeable haem. A β-haematin inhibition hit rate of 73% was found, a large enrichment over random screening, demonstrating that virtual screening can be a useful and cost-effective approach in the search for new haemozoin inhibiting antimalarials.

Indexed as

AnimalsAntimalarialsBenzoxazolesBinding SitesCell SurvivalCHO CellsCricetinaeCricetulusDatabases, ProteinHemeproteinsMolecular Docking SimulationPlasmodium falciparumProtein ConformationProtozoan ProteinsAntimalarialsBenzoxazolesHemeproteinshemozoinProtozoan Proteins

Identifiers

PMID32099045
PMCPMC7042288
OpenAlexW3007134878

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.