Article (Scientific journals)
Contribution of sleep to the repair of neuronal DNA double-strand breaks: evidence from flies and mice.
Bellesi, Michele; Bushey, Daniel; Chini, Mattia et al.
2016In Scientific Reports, 6 (1), p. 36804
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Keywords :
DNA Repair Enzymes; Animals; Brain/pathology; Brain/radiation effects; DNA Repair Enzymes/genetics; DNA Repair Enzymes/metabolism; Drosophila melanogaster; Female; Male; Mice, Inbred C57BL; Neurons/physiology; Neurons/radiation effects; Radiation Injuries, Experimental/genetics; Transcriptional Activation; DNA Breaks, Double-Stranded; DNA Repair; Sleep; Brain; Neurons; Radiation Injuries, Experimental; Multidisciplinary
Abstract :
[en] Exploration of a novel environment leads to neuronal DNA double-strand breaks (DSBs). These DSBs are generated by type 2 topoisomerase to relieve topological constrains that limit transcription of plasticity-related immediate early genes. If not promptly repaired, however, DSBs may lead to cell death. Since the induction of plasticity-related genes is higher in wake than in sleep, we asked whether it is specifically wake associated with synaptic plasticity that leads to DSBs, and whether sleep provides any selective advantage over wake in their repair. In flies and mice, we find that enriched wake, more than simply time spent awake, induces DSBs, and their repair in mice is delayed or prevented by subsequent wake. In both species the repair of irradiation-induced neuronal DSBs is also quicker during sleep, and mouse genes mediating the response to DNA damage are upregulated in sleep. Thus, sleep facilitates the repair of neuronal DSBs.
Disciplines :
Life sciences: Multidisciplinary, general & others
Author, co-author :
Bellesi, Michele;  Department of Psychiatry, University of Wisconsin-Madison, 6001 Research Park Blvd, Madison, WI 53719, USA ; Department of Experimental and Clinical Medicine, Section of Neuroscience and Cell Biology, Università Politecnica delle Marche, Ancona, Italy
Bushey, Daniel;  Department of Psychiatry, University of Wisconsin-Madison, 6001 Research Park Blvd, Madison, WI 53719, USA
Chini, Mattia  ;  Department of Psychiatry, University of Wisconsin-Madison, 6001 Research Park Blvd, Madison, WI 53719, USA
Tononi, Giulio;  Department of Psychiatry, University of Wisconsin-Madison, 6001 Research Park Blvd, Madison, WI 53719, USA
Cirelli, Chiara;  Department of Psychiatry, University of Wisconsin-Madison, 6001 Research Park Blvd, Madison, WI 53719, USA
Language :
English
Title :
Contribution of sleep to the repair of neuronal DNA double-strand breaks: evidence from flies and mice.
Publication date :
10 November 2016
Journal title :
Scientific Reports
eISSN :
2045-2322
Publisher :
Nature Publishing Group, Basingstoke, Hampshire, England
Volume :
6
Issue :
1
Pages :
36804
Peer reviewed :
Peer Reviewed verified by ORBi
Funding text :
Funded by NIMH grants R01MH091326 (GT), R01MH099231 (CC and GT), and NINDS grant P01NS083514 (CC and GT). GT is involved in a research study in humans supported by Philips Respironics. This study is not related to the work presented in the current manuscript.
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