Evidence map›Paper›PMID 34876524›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2021

A serum-stable RNA aptamer specific for SARS-CoV-2 neutralizes viral entry.

Julián Valero, Laia Civit, Daniel M Dupont, Denis Selnihhin, Line S Reinert, Manja Idorn, Brett A Israels, Aleksandra M Bednarz, Claus Bus, Benedikt Asbach and 6 more

Open access · hybridAbstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 56 papers.

0numbers the graph read from it
0cells of the map it votes in
56citing papers in PubMed
5.5field-weighted citation impact, top 3% 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

56 citing papers in PubMed, 120 citations in OpenAlex.

  1. Article
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  6. Bacteria as living biosensors for DNA.Nature reviews bioengineering · 2026
    Article
  7. Advances in aptamer technology for target-based drug discovery.Journal of pharmaceutical analysis · 2026
    Review
  8. Review
  9. Article
  10. Drugs against broad-spectrum of coronaviruses.Frontiers in immunology · 2026
    Review
  11. Article
  12. Article
  13. Article
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  15. Article
  16. Review
  17. Article
  18. Review
  19. Determining the Serum Stability of Human Adenosine Deaminase 1 Enzyme.Journal of visualized experiments : JoVE · 2024
    Article
  20. 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

16 authors at 3 institutions in 2 countries.

Julián ValeroInterdisciplinary Nanoscience Center, Aarhus University DK-8000 Aarhus, Denmark; jvalero@inano.au.dk jk@mbg.au.dk.ORCID 0000-0002-5260-2770
Laia CivitInterdisciplinary Nanoscience Center, Aarhus University DK-8000 Aarhus, Denmark.
Daniel M DupontInterdisciplinary Nanoscience Center, Aarhus University DK-8000 Aarhus, Denmark.
Denis SelnihhinDepartment of Molecular Biology and Genetics, Aarhus University, DK-8000 Aarhus, Denmark.
Line S ReinertDepartment of Biomedicine, Aarhus University DK-8000 Aarhus, Denmark.
Manja IdornDepartment of Biomedicine, Aarhus University DK-8000 Aarhus, Denmark.ORCID 0000-0002-6769-9165
Brett A IsraelsInterdisciplinary Nanoscience Center, Aarhus University DK-8000 Aarhus, Denmark.
Aleksandra M BednarzInterdisciplinary Nanoscience Center, Aarhus University DK-8000 Aarhus, Denmark.
Claus BusInterdisciplinary Nanoscience Center, Aarhus University DK-8000 Aarhus, Denmark.ORCID 0000-0002-7706-1456
Benedikt AsbachInstitute of Medical Microbiology and Hygiene/Molecular Microbiology (Virology), Regensburg University 93053 Regensburg, Germany.ORCID 0000-0003-1056-8591
David PeterhoffInstitute of Medical Microbiology and Hygiene/Molecular Microbiology (Virology), Regensburg University 93053 Regensburg, Germany.
Finn S PedersenDepartment of Molecular Biology and Genetics, Aarhus University, DK-8000 Aarhus, Denmark.ORCID 0000-0003-0981-0221
Victoria BirkedalInterdisciplinary Nanoscience Center, Aarhus University DK-8000 Aarhus, Denmark.
Ralf WagnerInstitute of Medical Microbiology and Hygiene/Molecular Microbiology (Virology), Regensburg University 93053 Regensburg, Germany.
Søren R PaludanDepartment of Biomedicine, Aarhus University DK-8000 Aarhus, Denmark.
Jørgen KjemsInterdisciplinary Nanoscience Center, Aarhus University DK-8000 Aarhus, Denmark; jvalero@inano.au.dk jk@mbg.au.dk.ORCID 0000-0003-4128-9317
Aarhus University · DKInstitute of Medical Microbiology and Hygiene · DEUniversity Hospital Regensburg · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) pandemic has created an urgent need for new technologies to treat COVID-19. Here we report a 2'-fluoro protected RNA aptamer that binds with high affinity to the receptor binding domain (RBD) of SARS-CoV-2 spike protein, thereby preventing its interaction with the host receptor ACE2. A trimerized version of the RNA aptamer matching the three RBDs in each spike complex enhances binding affinity down to the low picomolar range. Binding mode and specificity for the aptamer-spike interaction is supported by biolayer interferometry, single-molecule fluorescence microscopy, and flow-induced dispersion analysis in vitro. Cell culture experiments using virus-like particles and live SARS-CoV-2 show that the aptamer and, to a larger extent, the trimeric aptamer can efficiently block viral infection at low concentration. Finally, the aptamer maintains its high binding affinity to spike from other circulating SARS-CoV-2 strains, suggesting that it could find widespread use for the detection and treatment of SARS-CoV-2 and emerging variants.

Indexed as

Angiotensin-Converting Enzyme 2Aptamers, NucleotideHumansMutationNeutralization TestsNucleic Acid ConformationProtein BindingProtein Interaction Domains and MotifsSARS-CoV-2SELEX Aptamer TechniqueSpike Glycoprotein, CoronavirusVirus InternalizationACE2 protein, humanAngiotensin-Converting Enzyme 2Aptamers, NucleotideSpike Glycoprotein, Coronavirusspike protein, SARS-CoV-2aptamer multimerizationaptamer selectionSARS-CoV-2 targetingspike proteinviral neutralization

Identifiers

PMID34876524
PMCPMC8685691
OpenAlexW4200030469

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.