Evidence map›Paper›PMID 33049583›Full record

ArticleBiomedicine & pharmacotherapy = Biomedecine & pharmacotherapie2020

GB-2 inhibits ACE2 and TMPRSS2 expression: In vivo and in vitro studies.

Ching-Yuan Wu, Yu-Shih Lin, Yao-Hsu Yang, Li-Hsin Shu, Yu-Ching Cheng, Hung Te Liu

Open access · goldAbstract read
In one paragraph

Article in Biomedicine & pharmacotherapy = Biomedecine & pharmacotherapie, 2020. 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
0.5field-weighted citation impact, top 21% 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, 31 citations in OpenAlex.

  1. Article
  2. Bioactive Compounds ofInternational journal of molecular sciences · 2026
    Article
  3. Molecular mechanisms of SARS-CoV-2 entry: implications for biomedical strategies.Microbiology and molecular biology reviews : MMBR · 2025
    Review
  4. Article
  5. International journal of molecular sciences · 2025
    Article
  6. Article
  7. Article
  8. Review
  9. Review
  10. Heliyon · 2023
    Article
  11. Article
  12. Review
  13. Review
  14. International journal of molecular sciences · 2022
    Article
  15. Article
  16. Article
  17. Novel Drug Design for Treatment of COVID-19: A Systematic Review of Preclinical Studies.The Canadian journal of infectious diseases & medical microbiology = Journal canadien des maladies infectieuses et de la microbiologie medicale · 2022
    Review
  18. Review
  19. GB-2 blocking the interaction between ACE2 and wild type and mutation of spike protein of SARS-CoV-2.Biomedicine & pharmacotherapy = Biomedecine & pharmacotherapie · 2021
    Article
  20. Antcins fromPlants (Basel, Switzerland) · 2021
    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

6 authors at 1 institution in 1 country.

Ching-Yuan WuDepartment of Traditional Chinese Medicine, Chang Gung Memorial Hospital, Chiayi Branch, Putzu, Taiwan; School of Chinese Medicine, College of Medicine, Chang Gung University, Tao-Yuan, Taiwan. Electronic address: smbepigwu77@gmail.com.
Yu-Shih LinDepartment of Pharmacy, Chiayi Chang Gung Memorial Hospital, Chiayi Branch, Putzu, Taiwan.
Yao-Hsu YangDepartment of Traditional Chinese Medicine, Chang Gung Memorial Hospital, Chiayi Branch, Putzu, Taiwan; School of Chinese Medicine, College of Medicine, Chang Gung University, Tao-Yuan, Taiwan; Health Information and Epidemiology Laboratory of Chang Gung Memorial Hospital, Chiayi Branch, Putzu, Taiwan.
Li-Hsin ShuDepartment of Traditional Chinese Medicine, Chang Gung Memorial Hospital, Chiayi Branch, Putzu, Taiwan.
Yu-Ching ChengDepartment of Traditional Chinese Medicine, Chang Gung Memorial Hospital, Chiayi Branch, Putzu, Taiwan.
Hung Te LiuDepartment of Traditional Chinese Medicine, Chang Gung Memorial Hospital, Chiayi Branch, Putzu, Taiwan.
Chiayi Chang Gung Memorial Hospital · TW

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

After the first case of Coronavirus disease 2019 (COVID-19) was reported in Wuhan, COVID-19 has rapidly spread to almost all parts of world. Angiotensin converting enzyme 2 (ACE2) receptor can bind to spike protein of SARS-CoV-2. Then, the spike protein of SARS-CoV-2 can be cleaved and activated by transmembrane protease, serine 2 (TMPRSS2) of the host cells for SARS-CoV-2 infection. Therefore, ACE2 and TMPRSS2 are potential antiviral targets for treatment of prevention of SARS-CoV-2 infection. In this study, we discovered that 10-250 μg/mL of GB-2, from Tian Shang Sheng Mu of Chiayi Puzi Peitian Temple, can inhibit ACE2 mRNA expression and ACE2 and TMPRSS2 protein expression in HepG2 and 293 T cells without cytotoxicity. GB-2 treatment could decrease ACE2 and TMPRSS2 expression level of lung tissue and kidney tissue without adverse effects, including nephrotoxicity and hepatotoxicity, in animal model. In the compositions of GB-2, we discovered that 50 μg/mL of theaflavin could inhibit protein expression of ACE2 and TMPRSS2. Theaflavin could inhibit the mRNA expression of ACE2. In conclusion, our results suggest that GB-2 and theaflavin could act as potential compounds for ACE2 and TMPRSS2 inhibitors in the further clinical study.

Indexed as

Angiotensin-Converting Enzyme 2Angiotensin-Converting Enzyme InhibitorsAnimalsCOVID-19COVID-19 Drug TreatmentDrugs, Chinese HerbalGene ExpressionHEK293 CellsHep G2 CellsHumansMaleMiceMice, Inbred C57BLProtease InhibitorsSARS-CoV-2Serine EndopeptidasesACE2 protein, humanAngiotensin-Converting Enzyme 2Angiotensin-Converting Enzyme InhibitorsDrugs, Chinese HerbalProtease InhibitorsSerine EndopeptidasesTMPRSS2 protein, humanACE2GB-2SARS-CoV-2TheaflavinTMPRSS2

Identifiers

PMID33049583
PMCPMC7547400
OpenAlexW3092620106

What OpenQuestion holds

Textmetadata
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.