Evidence map›Paper›PMID 33661906›Full record

ArticlePloS one2021

In vitro study of Hesperetin and Hesperidin as inhibitors of zika and chikungunya virus proteases.

Raphael J Eberle, Danilo S Olivier, Carolina C Pacca, Clarita M S Avilla, Mauricio L Nogueira, Marcos S Amaral, Dieter Willbold, Raghuvir K Arni, Monika A Coronado

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed
4.9field-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, 35 citations in OpenAlex.

  1. Scorpion Peptides in Antiviral Drug Discovery: An In-depth Review.Probiotics and antimicrobial proteins · 2026
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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

9 authors at 6 institutions in 2 countries.

Raphael J EberleMultiuser Center for Biomolecular Innovation, Departament of Physics, Instituto de Biociências Letras e Ciências Exatas (Ibilce), Universidade Estadual Paulista (UNESP), São Jose do Rio Preto, SP, Brazil.ORCID 0000-0002-8763-3884
Danilo S OlivierFederal University of Tocantins, Araguaína, TO, Brazil.ORCID 0000-0003-1269-3783
Carolina C PaccaInstituto de Biociências Letras e Ciências Exatas (Ibilce), Universidade Estadual Paulista (UNESP), São Jose do Rio Preto, SP, Brazil.
Clarita M S AvillaInstituto de Biociências Letras e Ciências Exatas (Ibilce), Universidade Estadual Paulista (UNESP), São Jose do Rio Preto, SP, Brazil.
Mauricio L NogueiraFaculdade de Medicina de São José do Rio Preto-FAMERP, São José do Rio Preto, Brazil.
Marcos S AmaralInstitute of Physics, Federal University of Mato Grosso do Sul, Campo Grande, MS, Brazil.ORCID 0000-0001-8101-6933
Dieter WillboldInstitute of Biological Information Processing (IBI-7: Structural Biochemistry), Forschungszentrum Jülich, Jülich, Germany.
Raghuvir K ArniMultiuser Center for Biomolecular Innovation, Departament of Physics, Instituto de Biociências Letras e Ciências Exatas (Ibilce), Universidade Estadual Paulista (UNESP), São Jose do Rio Preto, SP, Brazil.
Monika A CoronadoMultiuser Center for Biomolecular Innovation, Departament of Physics, Instituto de Biociências Letras e Ciências Exatas (Ibilce), Universidade Estadual Paulista (UNESP), São Jose do Rio Preto, SP, Brazil.
Forschungszentrum Jülich · DEUniversidade Estadual Paulista (Unesp) · BRFaculdade Ceres · BRFaculdade de Medicina de São José do Rio Preto · BRUniversidade Federal de Mato Grosso do Sul · BRUniversidade Federal do Tocantins · BR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The potential outcome of flavivirus and alphavirus co-infections is worrisome due to the development of severe diseases. Hundreds of millions of people worldwide live under the risk of infections caused by viruses like chikungunya virus (CHIKV, genus Alphavirus), dengue virus (DENV, genus Flavivirus), and zika virus (ZIKV, genus Flavivirus). So far, neither any drug exists against the infection by a single virus, nor against co-infection. The results described in our study demonstrate the inhibitory potential of two flavonoids derived from citrus plants: Hesperetin (HST) against NS2B/NS3pro of ZIKV and nsP2pro of CHIKV and, Hesperidin (HSD) against nsP2pro of CHIKV. The flavonoids are noncompetitive inhibitors and the determined IC50 values are in low µM range for HST against ZIKV NS2B/NS3pro (12.6 ± 1.3 µM) and against CHIKV nsP2pro (2.5 ± 0.4 µM). The IC50 for HSD against CHIKV nsP2pro was 7.1 ± 1.1 µM. The calculated ligand efficiencies for HST were > 0.3, which reflect its potential to be used as a lead compound. Docking and molecular dynamics simulations display the effect of HST and HSD on the protease 3D models of CHIKV and ZIKV. Conformational changes after ligand binding and their effect on the substrate-binding pocket of the proteases were investigated. Additionally, MTT assays demonstrated a very low cytotoxicity of both the molecules. Based on our results, we assume that HST comprise a chemical structure that serves as a starting point molecule to develop a potent inhibitor to combat CHIKV and ZIKV co-infections by inhibiting the virus proteases.

Indexed as

AnimalsChikungunya virusChlorocebus aethiopsCitrusHesperidinHumansInhibitory Concentration 50Models, MolecularMolecular Docking SimulationPeptide HydrolasesPlant ExtractsProtein ConformationVero CellsViral ProteinsZika VirushesperetinHesperidinPeptide HydrolasesPlant ExtractsViral Proteins

Identifiers

PMID33661906
PMCPMC7932080
OpenAlexW3135803280

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.