Evidence map›Paper›PMID 34586788›Full record

ArticleJournal of agricultural and food chemistry2021

Inhibitory Effects and Surface Plasmon Resonance-Based Binding Affinities of Dietary Hydrolyzable Tannins and Their Gut Microbial Metabolites on SARS-CoV-2 Main Protease.

Huifang Li, Feng Xu, Chang Liu, Ang Cai, Joel A Dain, Dongli Li, Navindra P Seeram, Bongsup P Cho, Hang Ma

Open access · greenAbstract read
In one paragraph

Article in Journal of agricultural and food chemistry, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed
2.4field-weighted citation impact, top 12% 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

17 citing papers in PubMed, 29 citations in OpenAlex.

  1. Article
  2. Integrated Evaluation ofPharmaceuticals (Basel, Switzerland) · 2026
    Article
  3. Review
  4. Article
  5. Characterization of antiviral compounds using Bio-Layer Interferometry.bioRxiv : the preprint server for biology · 2025
    Article
  6. Investigation of phytochemicals isolated from selected Saudi medicinal plants as natural inhibitors of SARS CoV-2 main protease: In vitroSaudi pharmaceutical journal : SPJ : the official publication of the Saudi Pharmaceutical Society · 2024
    Article
  7. Article
  8. Article
  9. Review
  10. Article
  11. Article
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  17. Review
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 2 institutions in 2 countries.

Huifang LiSchool of Biotechnology and Health Sciences, Wuyi University, International Healthcare Innovation Institute (Jiangmen), Jiangmen 529020, China.
Feng XuDepartment of Biomedical and Pharmaceutical Sciences, College of Pharmacy, University of Rhode Island, Kingston, Rhode Island 02881, United States.
Chang LiuDepartment of Biomedical and Pharmaceutical Sciences, College of Pharmacy, University of Rhode Island, Kingston, Rhode Island 02881, United States.
Ang CaiDepartment of Biomedical and Pharmaceutical Sciences, College of Pharmacy, University of Rhode Island, Kingston, Rhode Island 02881, United States.
Joel A DainDepartment of Chemistry, University of Rhode Island, Kingston, Rhode Island 02881, United States.
Dongli LiSchool of Biotechnology and Health Sciences, Wuyi University, International Healthcare Innovation Institute (Jiangmen), Jiangmen 529020, China.
Navindra P SeeramDepartment of Biomedical and Pharmaceutical Sciences, College of Pharmacy, University of Rhode Island, Kingston, Rhode Island 02881, United States.ORCID https://orcid.org/0000-0001-7064-2904
Bongsup P ChoDepartment of Biomedical and Pharmaceutical Sciences, College of Pharmacy, University of Rhode Island, Kingston, Rhode Island 02881, United States.
Hang MaSchool of Biotechnology and Health Sciences, Wuyi University, International Healthcare Innovation Institute (Jiangmen), Jiangmen 529020, China.ORCID https://orcid.org/0000-0001-7565-6889
University of Rhode Island · USWuyi University · CN

Funding

Training CoreP20GM103430 · NIGMS · UNIVERSITY OF RHODE ISLAND · PI Bongsup P Cho · 2012 to 2026
$63.6M
NIGMS NIH HHS P20 GM103430
6 · The paper itself

Abstract

Severe acute respiratory syndrome coronavirus (SARS-CoV-2) main protease (Mpro) inhibitors are considered as potential treatments for coronavirus disease 2019, and dietary polyphenols show promise in SARS-CoV-2 Mpro inhibition based on in silico studies. In the present study, we utilize a combination of biochemical-, surface plasmon resonance-, and docking-based assays to evaluate the inhibition and binding affinities of a series of tannins and their gut microbial metabolites on SARS-CoV-2 Mpro. The tested compounds (2-50 μM) were hydrolyzable tannins, including ellagitannins (punicalagin and ellagic acid) and gallotannins (tannic acid, pentagalloyl glucose, ginnalin A, and gallic acid), and their gut microbial metabolites, urolithins and pyrogallol, respectively. They inhibited SARS-CoV-2 Mpro (by 6.6-100.0% at 50 μM) and bound directly to the Mpro protein (with dissociation constants from 1.1 × 10

Indexed as

COVID-19Gastrointestinal MicrobiomeHumansHydrolyzable TanninsMolecular Docking SimulationPeptide HydrolasesProtease InhibitorsSARS-CoV-2Surface Plasmon ResonanceHydrolyzable TanninsPeptide HydrolasesProtease Inhibitorsbinding affinitycoronavirus disease 2019 (COVID-19)gut microbial metaboliteshydrolyzable tanninsmain protease (Mpro)severe acute respiratory syndrome corona virus (SARS-CoV-2)surface plasmon resonance (SPR)

Identifiers

PMID34586788
PMCPMC8491554
OpenAlexW3202492701

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Registered trials

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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.