Evidence map›Paper›PMID 30682233›Full record

ArticleAngewandte Chemie (International ed. in English)2019

A Photoresponsive Stiff-Stilbene Ligand Fuels the Reversible Unfolding of G-Quadruplex DNA.

Michael P O'Hagan, Susanta Haldar, Marta Duchi, Thomas A A Oliver, Adrian J Mulholland, Juan C Morales, M Carmen Galan

Open access · hybridAbstract read
In one paragraph

Article in Angewandte Chemie (International ed. in English), 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 31 papers.

0numbers the graph read from it
0cells of the map it votes in
31citing papers in PubMed
3.9field-weighted citation impact, top 5% 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

31 citing papers in PubMed, 77 citations in OpenAlex.

  1. Dynamic Control of Nucleic Acids Self-Assembly and Expression Using Photoswitches.Chemistry (Weinheim an der Bergstrasse, Germany) · 2026
    Review
  2. Light-Controlled Folding and Chiroptical Sensing of G-Quadruplex DNA.The journal of physical chemistry letters · 2026
    Article
  3. Article
  4. Article
  5. Review
  6. Light-Activated Molecules Targeting G-Quadruplex Nucleic Acids.Chemistry (Weinheim an der Bergstrasse, Germany) · 2025
    Review
  7. Article
  8. Article
  9. Harnessing Light for G-Quadruplex Modulation: Dual Isomeric Effects of anThe journal of physical chemistry letters · 2024
    Article
  10. Review
  11. Article
  12. Review
  13. Thermal and (Thermo-Reversible) Photochemical Cycloisomerization of 1Journal of the American Chemical Society · 2023
    Article
  14. Article
  15. Review
  16. Article
  17. Review
  18. Review
  19. Molecular photoswitches in aqueous environments.Chemical Society reviews · 2021
    Review
  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

7 authors at 2 institutions in 2 countries.

Michael P O'HaganSchool of Chemistry, University of Bristol, Cantock's Close, BS8 1TS, UK.ORCID 0000-0003-4180-3144
Susanta HaldarSchool of Chemistry, University of Bristol, Cantock's Close, BS8 1TS, UK.ORCID 0000-0001-8642-109X
Marta DuchiSchool of Chemistry, University of Bristol, Cantock's Close, BS8 1TS, UK.
Thomas A A OliverSchool of Chemistry, University of Bristol, Cantock's Close, BS8 1TS, UK.
Adrian J MulhollandSchool of Chemistry, University of Bristol, Cantock's Close, BS8 1TS, UK.
Juan C MoralesInstituto de Parasitología y Biomedicina "López Neyra", Consejo Superior de Investigaciones Científicas (CSIC), PTS Granada, Avenida del Conocimiento 17, 18016, Armilla, Granada, Spain.
M Carmen GalanSchool of Chemistry, University of Bristol, Cantock's Close, BS8 1TS, UK.ORCID 0000-0001-7307-2871
University of Bristol · GBConsejo Superior de Investigaciones Científicas · ES

Funding

RADIATION INDUCED MODIFICATIONS IN PROTEIN SYNTHESISR01CA015378 · NCI · CASE WESTERN RESERVE UNIVERSITY · PI OLEINICK, NANCY L · 1985 to 1989
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RADIATION-INDUCED MODIFICATIONS IN PROTEIN SYNTHESISR37CA015378 · NCI · CASE WESTERN RESERVE UNIVERSITY · PI OLEINICK, NANCY L · 1990 to 1997
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Biotechnology and Biological Sciences Research Council BB/L01386X/1Engineering and Physical Sciences Research Council EP/L015366/1Engineering and Physical Sciences Research Council EP/M015378/1Engineering and Physical Sciences Research Council EP/M015378/1 & EP/M022609/1Engineering and Physical Sciences Research Council EP/P010253/1European Research Council 648239Ministerio de Economía, Industria y Competitividad, Gobierno de España CTQ2015-64275-PRoyal Society UF1402310) and RGF\EA\180076
6 · The paper itself

Abstract

The polymorphic nature of G-quadruplex (G4) DNA structures points to a range of potential applications in nanodevices and an opportunity to control G4 in biological settings. Light is an attractive means for the regulation of oligonucleotide structure as it can be delivered with high spatiotemporal precision. However, surprisingly little attention has been devoted towards the development of ligands for G4 that allow photoregulation of G4 folding. We report a novel G4-binding chemotype derived from stiff-stilbene. Surprisingly however, whilst the ligand induces high stabilization in the potassium form of human telomeric DNA, it causes the unfolding of the same G4 sequence in sodium buffer. This effect can be reversed on demand by irradiation with 400 nm light through deactivation of the ligand by photo-oxidation. By fuelling the system with the photolabile ligand, the conformation of G4 DNA was switched five times.

Indexed as

DNAG-QuadruplexesHumansLigandsStilbenesTelomereDNALigandsStilbenescircular dichroismDNAG-quadruplexesoligonucleotidesphotoregulation

Identifiers

PMID30682233
PMCPMC6563076
OpenAlexW2911719860

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.