Evidence map›Paper›PMID 40415937›Full record

ArticleFrontiers in microbiology2025

Kaurenoic acid is a potent inhibitor of SARS-CoV-2 RNA synthesis, virion assembly, and release

Igor Andrade Santos, Victoria Riquena Grosche, Natasha Marques Cassani, Rodrigo Cássio Sola Veneziani, Gustavo Lima Ribeiro, Jairo Kenupp Bastos, Nilson Nicolau-Junior, Andres Merits, Carlos Henrique Gomes Martins, Mark Harris and 1 more

Abstract read
In one paragraph

Article in Frontiers in microbiology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing papers in PubMed
–field-weighted citation impact
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

1 citing paper in PubMed.

  1. 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

11 authors.

Igor Andrade SantosInstitute of Biomedical Sciences, Federal University of Uberlândia, Uberlândia, Brazil.
Victoria Riquena GroscheInstitute of Biomedical Sciences, Federal University of Uberlândia, Uberlândia, Brazil.
Natasha Marques CassaniInstitute of Biomedical Sciences, Federal University of Uberlândia, Uberlândia, Brazil.
Rodrigo Cássio Sola VenezianiNucleus of Research in Sciences and Technology, University of Franca, Franca, Brazil.
Gustavo Lima RibeiroNucleus of Research in Sciences and Technology, University of Franca, Franca, Brazil.
Jairo Kenupp BastosFaculty of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Ribeirão Preto, Brazil.
Nilson Nicolau-JuniorInstitute of Biotechnology, Federal University of Uberlândia (UFU), Uberlândia, Brazil.
Andres MeritsInstitute of Bioengineering, University of Tartu, Tartu, Estonia.
Carlos Henrique Gomes MartinsInstitute of Biomedical Sciences, Federal University of Uberlândia, Uberlândia, Brazil.
Mark HarrisFaculty of Biological Sciences, School of Molecular and Cellular Biology, University of Leeds, Leeds, United Kingdom.
Ana Carolina Gomes JardimInstitute of Biomedical Sciences, Federal University of Uberlândia, Uberlândia, Brazil.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Introduction: Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), which is responsible for the coronavirus disease 2019 (COVID-19) pandemic, continues to pose global health challenges despite the availability of approved vaccines and antiviral drugs. The emergence of new variants of SARS-CoV-2 and ongoing post-COVID complications necessitate continuous exploration of effective treatments. Kaurenoic acid (KA) is a tetracyclic diterpenoid isolated from plants of the Methods and Results: KA demonstrated a high selective index of 16.1 against SARS-CoV-2 and robust effectiveness against the B.1.617.2 (Delta) and BA.2 (Omicron) variants. Mechanistically, KA was shown to impair the post-entry steps of viral replication. In a subgenomic replicon system, we observed a decrease in viral RNA synthesis in different cell lines. Using an infectious virus, a larger reduction in the release of SARS-CoV-2 virions was observed. We suggest that KA interacts with SARS-CoV-2 proteases through molecular docking. Conclusion: In conclusion, KA emerges as an inhibitor of SARS-CoV-2 proteases and, consequently, its replication cycle. It could be a good candidate for further investigation in clinical assays against SARS-CoV-2 infection.

Indexed as

antiviralCOVID-19natural compoundsphytotherapeuticsSARS-CoV-2

Identifiers

PMID40415937
PMCPMC12098342

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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.