Evidence map›Paper›PMID 34680551›Full record

ArticleBiomedicines2021

Plant Alkaloids Inhibit Membrane Fusion Mediated by Calcium and Fragments of MERS-CoV and SARS-CoV/SARS-CoV-2 Fusion Peptides.

Egor V Shekunov, Svetlana S Efimova, Natalia M Yudintceva, Anna A Muryleva, Vladimir V Zarubaev, Alexander V Slita, Olga S Ostroumova

Open access · goldAbstract read
In one paragraph

Article in Biomedicines, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed
1.3field-weighted citation impact, top 20% 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

14 citing papers in PubMed, 22 citations in OpenAlex.

  1. Piperine and Tabersonine, but Not Lupinine, InhibitInternational journal of molecular sciences · 2025
    Article
  2. Review
  3. Membrane-Targeting Antivirals.International journal of molecular sciences · 2025
    Review
  4. Article
  5. Article
  6. Review
  7. Review
  8. Review
  9. Article
  10. Article
  11. Review
  12. Article
  13. Article
  14. The Mechanisms of Lipid Vesicle Fusion Inhibition by Extracts of Chaga and Buckthorn Leaves.Biochemistry (Moscow) Supplement. Series A, Membrane and cell biology · 2022
    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

7 authors at 2 institutions in 1 country.

Egor V ShekunovInstitute of Cytology of Russian Academy of Sciences, Tikhoretsky 4, 194064 Saint Petersburg, Russia.ORCID 0000-0002-9028-5112
Svetlana S EfimovaInstitute of Cytology of Russian Academy of Sciences, Tikhoretsky 4, 194064 Saint Petersburg, Russia.ORCID 0000-0002-2429-2007
Natalia M YudintcevaInstitute of Cytology of Russian Academy of Sciences, Tikhoretsky 4, 194064 Saint Petersburg, Russia.
Anna A MurylevaSaint-Petersburg Pasteur Institute of Epidemiology and Microbiology, Mira 14, 197101 Saint Petersburg, Russia.
Vladimir V ZarubaevSaint-Petersburg Pasteur Institute of Epidemiology and Microbiology, Mira 14, 197101 Saint Petersburg, Russia.ORCID 0000-0002-5224-3771
Alexander V SlitaSaint-Petersburg Pasteur Institute of Epidemiology and Microbiology, Mira 14, 197101 Saint Petersburg, Russia.ORCID 0000-0001-8229-0715
Olga S OstroumovaInstitute of Cytology of Russian Academy of Sciences, Tikhoretsky 4, 194064 Saint Petersburg, Russia.
Institute of Cytology · RUSaint Petersburg Pasteur Institute · RU

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

To rationalize the antiviral actions of plant alkaloids, the ability of 20 compounds to inhibit calcium-mediated fusion of lipid vesicles composed of phosphatidylglycerol and cholesterol was investigated using the calcein release assay and dynamic light scattering. Piperine, tabersonine, hordenine, lupinine, quinine, and 3-isobutyl-1-methylxanthine demonstrated the most potent effects (inhibition index greater than 50%). The introduction of phosphatidylcholine into the phosphatidylglycerol/cholesterol mixture led to significant changes in quinine, hordenine, and 3-isobutyl-1-methylxanthine efficiency. Comparison of the fusion inhibitory ability of the tested alkaloids, and the results of the measurements of alkaloid-induced alterations in the physical properties of model membranes indicated a potent relationship between a decrease in the cooperativity of the phase transition of lipids and the ability of alkaloids to prevent calcium-mediated vesicle fusion. In order to use this knowledge to combat the novel coronavirus pandemic, the ability of the most effective compounds to suppress membrane fusion induced by fragments of MERS-CoV and SARS-CoV/SARS-CoV-2 fusion peptides was studied using the calcein release assay and confocal fluorescence microscopy. Piperine was shown to inhibit vesicle fusion mediated by both coronavirus peptides. Moreover, piperine was shown to significantly reduce the titer of SARS-CoV2 progeny in vitro in

Indexed as

alkaloidsantiviral therapyCOVID-19membrane fusionviral fusion inhibitor

Identifiers

PMID34680551
PMCPMC8533497
OpenAlexW3206977074

What OpenQuestion holds

Textmetadata
LicenceCC BY
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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.