Evidence map›Paper›PMID 29700486›Full record

ArticleNature protocols2018

Identification and characterization of nucleobase-modified aptamers by click-SELEX.

Franziska Pfeiffer, Fabian Tolle, Malte Rosenthal, Gerhard Markus Brändle, Jörg Ewers, Günter Mayer

Abstract read
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Article in Nature protocols, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 37 papers.

0numbers the graph read from it
0cells of the map it votes in
37citing 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

37 citing papers in PubMed.

  1. Article
  2. Selection and Characterization of SARS-CoV-2 Spike Binding Clickmers.Chembiochem : a European journal of chemical biology · 2026
    Article
  3. Article
  4. Generalizable Molecular Switch Designs forAccounts of chemical research · 2025
    Article
  5. Review
  6. Article
  7. Review
  8. Article
  9. Article
  10. Article
  11. Aptamers 101: aptamer discovery andChemical science · 2023
    Review
  12. Article
  13. Review
  14. In vitro selection of aptamers and their applications.Nature reviews. Methods primers · 2023
    Article
  15. Review
  16. Article
  17. Review
  18. Article
  19. 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

6 authors.

Franziska PfeifferLife and Medical Sciences Institute, University of Bonn, Bonn, Germany.
Fabian TolleLife and Medical Sciences Institute, University of Bonn, Bonn, Germany.ORCID 0000-0002-4221-0167
Malte RosenthalLife and Medical Sciences Institute, University of Bonn, Bonn, Germany.
Gerhard Markus BrändleLife and Medical Sciences Institute, University of Bonn, Bonn, Germany.
Jörg EwersLife and Medical Sciences Institute, University of Bonn, Bonn, Germany.
Günter MayerLife and Medical Sciences Institute, University of Bonn, Bonn, Germany.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Aptamers are single-stranded oligonucleotides that are in vitro-selected to recognize their target molecule with high affinity and specificity. As they consist of the four canonical nucleobases, their chemical diversity is limited, which in turn limits the addressable target spectrum. Introducing chemical modifications into nucleic acid libraries increases the interaction capabilities of the DNA and thereby the target spectrum. Here, we describe a protocol to select nucleobase-modified aptamers by using click chemistry (CuAAC) to introduce the preferred chemical modification. The use of click chemistry to modify the DNA library enables the introduction of a wide range of possible functionalities, which can be customized to the requirements of the target molecule and the desired application. This protocol yields modified DNA aptamers with extended interaction properties that are not accessible with the canonical set of nucleotides. After synthesis of the starting library containing a commercially available, alkyne-modified uridine (5-ethynyl-deoxyuridine (EdU)) instead of thymidine, the library is functionalized with the modification of choice by CuAAC. The thus-modified DNA is incubated with the target molecule and the best binding sequences are recovered. The chemical modification is removed during the amplification process. Therefore, this protocol is compatible with conventional amplification procedures and avoids enzymatic incompatibility problems associated with more extensive nucleobase modifications. After single-strand generation, the modification is reintroduced into the enriched library, which can then be subjected to the subsequent selection cycle. The duration of each selection cycle as outlined in the protocol is ∼1 d.

Indexed as

Aptamers, NucleotideClick ChemistryDNANucleic Acid Amplification TechniquesNucleic Acid HybridizationSELEX Aptamer TechniqueAptamers, NucleotideDNA

Identifiers

PMID29700486

What OpenQuestion holds

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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.