Evidence map›Paper›PMID 33420085›Full record

ArticleNature communications2021

Visualising G-quadruplex DNA dynamics in live cells by fluorescence lifetime imaging microscopy.

Peter A Summers, Benjamin W Lewis, Jorge Gonzalez-Garcia, Rosa M Porreca, Aaron H M Lim, Paolo Cadinu, Nerea Martin-Pintado, David J Mann, Joshua B Edel, Jean Baptiste Vannier and 2 more

Open access · goldAbstract read
In one paragraph

Article in Nature communications, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 85 papers.

0numbers the graph read from it
0cells of the map it votes in
85citing papers in PubMed
10.1field-weighted citation impact, top 1% 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

85 citing papers in PubMed, 168 citations in OpenAlex.

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25 more citing papers are in PubMed but not listed here.

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

12 authors at 5 institutions in 3 countries.

Peter A SummersDepartment of Chemistry, Molecular Sciencess Research Hub, White City Campus, Imperial College London, London, W12 0BZ, UK.ORCID 0000-0001-5538-525X
Benjamin W LewisDepartment of Chemistry, Molecular Sciencess Research Hub, White City Campus, Imperial College London, London, W12 0BZ, UK.
Jorge Gonzalez-GarciaDepartment of Chemistry, Molecular Sciencess Research Hub, White City Campus, Imperial College London, London, W12 0BZ, UK.ORCID 0000-0001-8994-1779
Rosa M PorrecaTelomere Replication and Stability group, Medical Research Council - London Institute of Medical Sciences, London, W12 0NN, UK.
Aaron H M LimDepartment of Chemistry, Molecular Sciencess Research Hub, White City Campus, Imperial College London, London, W12 0BZ, UK.
Paolo CadinuDepartment of Chemistry, Molecular Sciencess Research Hub, White City Campus, Imperial College London, London, W12 0BZ, UK.
Nerea Martin-PintadoOncode Institute, Hubrecht Institute-KNAW and University Medical Center Utrecht, Utrecht, The Netherlands.
David J MannDepartment of Life Sciences, Imperial College London South Kensington, London, SW7 2AZ, UK.
Joshua B EdelDepartment of Chemistry, Molecular Sciencess Research Hub, White City Campus, Imperial College London, London, W12 0BZ, UK.ORCID 0000-0001-5870-8659
Jean Baptiste VannierTelomere Replication and Stability group, Medical Research Council - London Institute of Medical Sciences, London, W12 0NN, UK. j.vannier@imperial.ac.uk.ORCID 0000-0002-4471-1854
Marina K KuimovaDepartment of Chemistry, Molecular Sciencess Research Hub, White City Campus, Imperial College London, London, W12 0BZ, UK. m.kuimova@imperial.ac.uk.ORCID 0000-0003-2383-6014
Ramon VilarDepartment of Chemistry, Molecular Sciencess Research Hub, White City Campus, Imperial College London, London, W12 0BZ, UK. r.vilar@imperial.ac.uk.ORCID 0000-0003-2992-199X
Imperial College London · GBGeneral Medical Council · GBNIHR Imperial Biomedical Research Centre · GBParc Científic de la Universitat de València · ESUniversity Medical Center Utrecht · NL

Funding

Department of HealthMedical Research Council MC_UP_1102/14
6 · The paper itself

Abstract

Guanine rich regions of oligonucleotides fold into quadruple-stranded structures called G-quadruplexes (G4s). Increasing evidence suggests that these G4 structures form in vivo and play a crucial role in cellular processes. However, their direct observation in live cells remains a challenge. Here we demonstrate that a fluorescent probe (DAOTA-M2) in conjunction with fluorescence lifetime imaging microscopy (FLIM) can identify G4s within nuclei of live and fixed cells. We present a FLIM-based cellular assay to study the interaction of non-fluorescent small molecules with G4s and apply it to a wide range of drug candidates. We also demonstrate that DAOTA-M2 can be used to study G4 stability in live cells. Reduction of FancJ and RTEL1 expression in mammalian cells increases the DAOTA-M2 lifetime and therefore suggests an increased number of G4s in these cells, implying that FancJ and RTEL1 play a role in resolving G4 structures in cellulo.

Indexed as

G-QuadruplexesAnimalsCell Line, TumorDNADNA HelicasesFanconi Anemia Complementation Group ProteinsFibroblastsFluorescent DyesGene Knockdown TechniquesHumansIndolesIntravital MicroscopyMiceMicroscopy, FluorescenceMolecular ImagingRNA HelicasesBrip1 protein, mouseDAPIDNADNA HelicasesFanconi Anemia Complementation Group ProteinsFluorescent DyesIndolesregulator of telomere length protein, mouseRNA Helicases

Identifiers

PMID33420085
PMCPMC7794231
OpenAlexW3120625911

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.