Evidence map›Paper›PMID 33428962›Full record

ArticleAntiviral research2021

Identification of a novel inhibitor targeting influenza A virus group 2 hemagglutinins.

Ruikun Du, Han Cheng, Qinghua Cui, Norton P Peet, Irina N Gaisina, Lijun Rong

Abstract read
In one paragraph

Article in Antiviral research, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.

0numbers the graph read from it
0cells of the map it votes in
15citing 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

15 citing papers in PubMed.

  1. Article
  2. Article
  3. Journal of medicinal chemistry · 2025
    Article
  4. Article
  5. Mechanistic insights into the small-molecule inhibition of influenza A virus entry.Proceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Review
  11. Review
  12. Article
  13. Article
  14. Small Molecule Inhibitors of Influenza Virus Entry.Pharmaceuticals (Basel, Switzerland) · 2021
    Review
  15. 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

6 authors.

Ruikun DuDepartment of Microbiology and Immunology, College of Medicine, University of Illinois at Chicago, Chicago, IL, 60612, USA. Electronic address: duzi857@163.com.
Han ChengDepartment of Microbiology and Immunology, College of Medicine, University of Illinois at Chicago, Chicago, IL, 60612, USA.
Qinghua CuiDepartment of Microbiology and Immunology, College of Medicine, University of Illinois at Chicago, Chicago, IL, 60612, USA.
Norton P PeetChicago BioSolutions Inc., 2242 W Harrison Street, Chicago, IL, 60612, United States.
Irina N GaisinaChicago BioSolutions Inc., 2242 W Harrison Street, Chicago, IL, 60612, United States; Department of Pharmaceutical Sciences, College of Pharmacy, University of Illinois at Chicago, Chicago, IL, 60612, USA.
Lijun RongDepartment of Microbiology and Immunology, College of Medicine, University of Illinois at Chicago, Chicago, IL, 60612, USA. Electronic address: Lijun@uic.edu.

Funding

Development of group 2 influenza A virus entry inhibitorsR41AI145727 · NIAID · CHICAGO BIOSOLUTIONS, INC. · PI RONG, LIJUN · 2019 to 2020
$600k
4-Aminopiperidines as novel anti-influenza agentsR41AI127031 · NIAID · CHICAGO BIOSOLUTIONS, INC. · PI RONG, LIJUN · 2016 to 2017
$396k
NIAID NIH HHS R41 AI127031NIAID NIH HHS R41 AI145727
6 · The paper itself

Abstract

Influenza A virus (IAV) causes seasonal epidemics and occasional but devastating pandemics, which are major public health concerns. The putative antiviral therapeutics are useful for the treatment of influenza, however, the emerging resistant strains necessitate a constant search for new drug candidates. Here we report the discovery of a novel antiviral agent, compound CBS1194, which was identified by a parallel high-throughput screening (HTS) campaign using two retroviral pseudotypes bearing H7 or H5 hemagglutinins (HAs). Subsequent analyses demonstrated that CBS1194 is specific to IAVs of group 2, while it has no effect against those of group 1. In a time-of-addition assay, CBS1194 showed a significant inhibitory effect during the early phase of viral infection. In addition, HA-mediated hemolysis can be inhibited by CBS1194 treatment, indicating that this compound may target the HA stalk region, which is responsible for membrane fusion. Escape mutant analyses and in silico docking further revealed that CBS1194 fits into a pocket near the fusion peptide, causing steric hindrance that blocks the low-pH induced rearrangement of HA. In summary, our study identifies a novel fusion inhibitor of group 2 IAVs, which has the potential as lead compound for further development.

Indexed as

Drug DiscoveryHigh-Throughput Screening AssaysA549 CellsAnimalsAntiviral AgentsDogsHEK293 CellsHemagglutininsHumansInfluenza A virusInfluenza, HumanMadin Darby Canine Kidney CellsMolecular Docking SimulationSmall Molecule LibrariesVirus InternalizationAntiviral AgentsHemagglutininsSmall Molecule LibrariesFusion inhibitorGroup 2 specificHemagglutininInfluenza A virus

Identifiers

PMID33428962
PMCPMC8813174

What OpenQuestion holds

Textmetadata
LicenceTDM
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.