Evidence map›Paper›PMID 28296892›Full record

ArticlePloS one2017

Blue-light induced accumulation of reactive oxygen species is a consequence of the Drosophila cryptochrome photocycle.

Louis-David Arthaut, Nathalie Jourdan, Ali Mteyrek, Maria Procopio, Mohamed El-Esawi, Alain d'Harlingue, Pierre-Etienne Bouchet, Jacques Witczak, Thorsten Ritz, André Klarsfeld and 5 more

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 27 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
27citing papers in PubMed, 1 pooled it
11.2field-weighted citation impact, top 2% 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

27 citing papers in PubMed, 1 synthesis or guideline pooled it, 57 citations in OpenAlex.

  1. Pooled it
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  9. Differential regulation of sleep by blue, green, and red light inFrontiers in behavioral neuroscience · 2024
    Article
  10. A structural decryption of cryptochromes.Frontiers in chemistry · 2024
    Review
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  14. Review
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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

15 authors at 9 institutions in 4 countries.

Louis-David ArthautUMR CNRS 8256 (B2A), IBPS, Université Paris VI, Paris, France.
Nathalie JourdanUMR CNRS 8256 (B2A), IBPS, Université Paris VI, Paris, France.
Ali MteyrekGCRN team, Brain Plasticity Unit, UMR 8249 CNRS/ESPCI Paris, PSL Research University, Paris, France.
Maria ProcopioUMR CNRS 8256 (B2A), IBPS, Université Paris VI, Paris, France.
Mohamed El-EsawiUMR CNRS 8256 (B2A), IBPS, Université Paris VI, Paris, France.
Alain d'HarlingueUMR CNRS 8256 (B2A), IBPS, Université Paris VI, Paris, France.
Pierre-Etienne BouchetUMR CNRS 8256 (B2A), IBPS, Université Paris VI, Paris, France.
Jacques WitczakUMR CNRS 8256 (B2A), IBPS, Université Paris VI, Paris, France.
Thorsten RitzDepartment of Physics and Astronomy, University of California, Irvine, California, United States of America.
André KlarsfeldGCRN team, Brain Plasticity Unit, UMR 8249 CNRS/ESPCI Paris, PSL Research University, Paris, France.
Serge BirmanGCRN team, Brain Plasticity Unit, UMR 8249 CNRS/ESPCI Paris, PSL Research University, Paris, France.
Robert J UsselmanDepartment of Chemistry and Biochemistry, Montana State University, Bozeman, Montana, United States of America.
Ute HoeckerBotanical Institute and Cluster of Excellence on Plant Sciences (CEPLAS), Biocenter, University of Cologne, Cologne, Germany.
Carlos F MartinoDepartment of Biomedical Engineering, Florida Institute of Technology, Melbourne, Florida, United States of America.
Margaret AhmadUMR CNRS 8256 (B2A), IBPS, Université Paris VI, Paris, France.
Centre National de la Recherche Scientifique · FRAdaptation Biologique et VieillissementESPCI Paris · FRSorbonne Université · FRFlorida Institute of Technology · USMontana State University · USUniversité Paris Sciences et Lettres · FRUniversity of California, Irvine · USUniversity of Cologne · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Cryptochromes are evolutionarily conserved blue-light absorbing flavoproteins which participate in many important cellular processes including in entrainment of the circadian clock in plants, Drosophila and humans. Drosophila melanogaster cryptochrome (DmCry) absorbs light through a flavin (FAD) cofactor that undergoes photoreduction to the anionic radical (FAD•-) redox state both in vitro and in vivo. However, recent efforts to link this photoconversion to the initiation of a biological response have remained controversial. Here, we show by kinetic modeling of the DmCry photocycle that the fluence dependence, quantum yield, and half-life of flavin redox state interconversion are consistent with the anionic radical (FAD•-) as the signaling state in vivo. We show by fluorescence detection techniques that illumination of purified DmCry results in enzymatic conversion of molecular oxygen (O2) to reactive oxygen species (ROS). We extend these observations in living cells to demonstrate transient formation of superoxide (O2•-), and accumulation of hydrogen peroxide (H2O2) in the nucleus of insect cell cultures upon DmCry illumination. These results define the kinetic parameters of the Drosophila cryptochrome photocycle and support light-driven electron transfer to the flavin in DmCry signaling. They furthermore raise the intriguing possibility that light-dependent formation of ROS as a byproduct of the cryptochrome photocycle may contribute to its signaling role.

Indexed as

LightPhotoperiodAnimalsCell LineCryptochromesDrosophila melanogasterHumansKineticsQuantum TheoryReactive Oxygen SpeciesSpodopteraCryptochromesReactive Oxygen Species

Identifiers

PMID28296892
PMCPMC5351967
OpenAlexW2653453176

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.