Evidence map›Paper›PMID 29782545›Full record

ArticlePloS one2018

Rosmarinic acid is a novel inhibitor for Hepatitis B virus replication targeting viral epsilon RNA-polymerase interaction.

Yuta Tsukamoto, Sotaro Ikeda, Koji Uwai, Riho Taguchi, Kazuaki Chayama, Takemasa Sakaguchi, Ryo Narita, Wan-Ling Yao, Fumihiko Takeuchi, Yukie Otakaki and 4 more

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 32 papers.

0numbers the graph read from it
0cells of the map it votes in
32citing papers in PubMed
2.8field-weighted citation impact, top 10% 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

32 citing papers in PubMed, 59 citations in OpenAlex.

  1. Antibacterial Activity of Rosmarinic Acid AgainstAnimals : an open access journal from MDPI · 2026
    Article
  2. Review
  3. The Antiviral Activity of Polyphenols.Molecular nutrition & food research · 2025
    Review
  4. Review
  5. Article
  6. Molecules (Basel, Switzerland) · 2025
    Review
  7. Article
  8. Article
  9. Article
  10. Article
  11. An overview of anti-Hepatitis B virus flavonoids and their mechanisms of action.Frontiers in cellular and infection microbiology · 2024
    Review
  12. Review
  13. Review
  14. Review
  15. Article
  16. (Revista brasileira de farmacognosia : orgao oficial da Sociedade Brasileira de Farmacognosia · 2023
    Article
  17. Review
  18. Review
  19. Article
  20. 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

14 authors at 7 institutions in 3 countries.

Yuta TsukamotoLaboratory of Molecular Genetics, Department of Virus Research, Institute for Frontier Life and Medical Sciences, Kyoto University, Kyoto, Japan.
Sotaro IkedaLaboratory of Molecular Genetics, Department of Virus Research, Institute for Frontier Life and Medical Sciences, Kyoto University, Kyoto, Japan.
Koji UwaiDivision of Sustainable and Environmental Engineering, Graduate School of Engineering, Muroran Institute of Technology, Muroran, Japan.
Riho TaguchiDivision of Sustainable and Environmental Engineering, Graduate School of Engineering, Muroran Institute of Technology, Muroran, Japan.
Kazuaki ChayamaDepartment of Gastroenterology and Metabolism, Applied Life Science, Institute of Biomedical & Health Science, Hiroshima University, Hiroshima, Japan.
Takemasa SakaguchiDepartment of Virology, Graduate School of Biomedical Sciences, Hiroshima University, Hiroshima, Japan.
Ryo NaritaLaboratory of Molecular Genetics, Department of Virus Research, Institute for Frontier Life and Medical Sciences, Kyoto University, Kyoto, Japan.
Wan-Ling YaoLaboratory of Molecular Genetics, Department of Virus Research, Institute for Frontier Life and Medical Sciences, Kyoto University, Kyoto, Japan.ORCID 0000-0001-6193-9247
Fumihiko TakeuchiLaboratory of Molecular Genetics, Department of Virus Research, Institute for Frontier Life and Medical Sciences, Kyoto University, Kyoto, Japan.
Yukie OtakakiLaboratory of Molecular Genetics, Department of Virus Research, Institute for Frontier Life and Medical Sciences, Kyoto University, Kyoto, Japan.
Koichi WatashiDepartment of Virology II, National Institute of Infectious Diseases, Tokyo, Japan.
Takaji WakitaDepartment of Virology II, National Institute of Infectious Diseases, Tokyo, Japan.
Hiroki KatoLaboratory of Molecular Genetics, Department of Virus Research, Institute for Frontier Life and Medical Sciences, Kyoto University, Kyoto, Japan.
Takashi FujitaLaboratory of Molecular Genetics, Department of Virus Research, Institute for Frontier Life and Medical Sciences, Kyoto University, Kyoto, Japan.
Kyoto University · JPHiroshima University · JPMuroran Institute of Technology · JPUniversity of Bonn · DEAarhus University · DKNational Institute of Infectious Diseases · JPTokyo University of Science · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Current therapeutics for hepatitis B virus (HBV) patients such as nucleoside analogs (NAs) are effective; however, new antiviral drugs against HBV are still desired. Since the interaction between the epsilon (ε) sequence of HBV pregenomic RNA and viral polymerase (Pol) is a key step in the HBV replication cycle, we aimed to identify small compounds for its inhibition, and established a pull-down assay system for the detection of ε-RNA-binding-Pol. Screening showed that 5 out of 3,965 compounds inhibited ε-Pol binding, and we identified rosmarinic acid, which exhibited specificity, as a potential antiviral agent. In order to examine the anti-HBV effects of rosmarinic acid, HBV-infected primary human hepatocytes from a humanized mouse liver were treated with rosmarinic acid. The rosmarinic acid treatment decreased HBV components including the amounts of extracellular HBV DNA with negligible cytotoxicity. We also investigated the combined effects of rosmarinic acid and the NA, lamivudine. rosmarinic acid slightly enhanced the anti-HBV activity of lamivudine, suggesting that the HBV replication step targeted by rosmarinic acid is distinct from that of NA. We analyzed an additional 25 rosmarinic acid derivatives, and found that 5 also inhibited ε-Pol. Structural comparisons between these derivatives implied that the "two phenolic hydroxyl groups at both ends" and the "caffeic acid-like structure" of rosmarinic acid are critical for the inhibition of ε-Pol binding. Collectively, our results demonstrate that rosmarinic acid inhibits HBV replication in HBV-infected cells by specifically targeting ε-Pol binding.

Indexed as

AnimalsAntiviral AgentsCells, CulturedCinnamatesDepsidesDNA-Directed RNA PolymerasesDrug SynergismEnzyme InhibitorsGene Products, polHEK293 CellsHepatitis B virusHepatocytesHep G2 CellsHumansLamivudineMiceAntiviral AgentsCinnamatesDepsidesDNA-Directed RNA PolymerasesEnzyme InhibitorsGene Products, polLamivudineQuercetinRNA, ViralRosmarinic Acid

Identifiers

PMID29782545
PMCPMC5962091
OpenAlexW2803422725

What OpenQuestion holds

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LicenceCC BY
Read underepoch 390

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.