Evidence map›Paper›PMID 25918143›Full record

ArticleAntimicrobial agents and chemotherapy2015

Cross-protection of influenza A virus infection by a DNA aptamer targeting the PA endonuclease domain.

Shuofeng Yuan, Naru Zhang, Kailash Singh, Huiping Shuai, Hin Chu, Jie Zhou, Billy K C Chow, Bo-Jian Zheng

Open access · bronzeAbstract read
In one paragraph

Article in Antimicrobial agents and chemotherapy, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed
2.6field-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

23 citing papers in PubMed, 44 citations in OpenAlex.

  1. Pharmacophores of Influenza Virus PA Endonuclease Inhibitors.Advances in experimental medicine and biology · 2026
    Review
  2. Article
  3. Review
  4. Aptamers for Viral Detection and Inhibition.ACS infectious diseases · 2022
    Review
  5. Article
  6. Review
  7. Review
  8. Aptamers for Anti-Viral Therapeutics and Diagnostics.International journal of molecular sciences · 2021
    Review
  9. Article
  10. Review
  11. Article
  12. Review
  13. Review
  14. Review
  15. Review
  16. Review
  17. Article
  18. Article
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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

8 authors at 1 institution in 1 country.

Shuofeng YuanDepartment of Microbiology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, China.
Naru ZhangDepartment of Microbiology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, China.
Kailash SinghSchool of Biological Sciences, The University of Hong Kong, Hong Kong SAR, China.
Huiping ShuaiDepartment of Microbiology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, China.
Hin ChuDepartment of Microbiology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, China.
Jie ZhouDepartment of Microbiology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, China.
Billy K C ChowSchool of Biological Sciences, The University of Hong Kong, Hong Kong SAR, China.
Bo-Jian ZhengDepartment of Microbiology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, China bzheng@hkucc.hku.hk.
University of Hong Kong · HK

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Amino acid residues in the N-terminal of the PA subunit (PAN) of the influenza A virus polymerase play critical roles in endonuclease activity, protein stability, and viral RNA (vRNA) promoter binding. In addition, PAN is highly conserved among different subtypes of influenza virus, which suggests PAN to be a desired target in the development of anti-influenza agents. We selected DNA aptamers targeting the intact PA protein or the PAN domain of an H5N1 virus strain using systematic evolution of ligands by exponential enrichment (SELEX). The binding affinities of selected aptamers were measured, followed by an evaluation of in vitro endonuclease inhibitory activity. Next, the antiviral effects of enriched aptamers against influenza A virus infections were examined. A total of three aptamers targeting PA and six aptamers targeting PAN were selected. Our data demonstrated that all three PA-selected aptamers neither inhibited endonuclease activity nor exhibited antiviral efficacy, whereas four of the six PAN-selected aptamers inhibited both endonuclease activity and H5N1 virus infection. Among the four effective aptamers, one exhibited cross-protection against infections of H1N1, H5N1, H7N7, and H7N9 influenza viruses, with a 50% inhibitory concentration (IC50) of around 10 nM. Notably, this aptamer was identified at the 5th round but disappeared after the 10th round of selection, suggesting that the identification and evaluation of aptamers at early rounds of selection may be highly helpful for screening effective aptamers. Overall, our study provides novel insights for screening and developing effective aptamers for use as anti-influenza drugs.

Indexed as

AnimalsAntiviral AgentsAptamers, NucleotideCalorimetryCell LineCross ProtectionDeoxyribonuclease IDNA FootprintingDogsEndonucleasesHumansInfluenza A Virus, H5N1 SubtypeInfluenza, HumanInsectaMadin Darby Canine Kidney CellsOligonucleotidesAntiviral AgentsAptamers, NucleotideDeoxyribonuclease IEndonucleasesOligonucleotides

Identifiers

PMID25918143
PMCPMC4468670
OpenAlexW2045721275

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.