PUBLICATION
Sleep increases chromosome dynamics to enable reduction of accumulating DNA damage in single neurons
- Authors
- Zada, D., Bronshtein, I., Lerer-Goldshtein, T., Garini, Y., Appelbaum, L.
- ID
- ZDB-PUB-190308-5
- Date
- 2019
- Source
- Nature communications 10: 895 (Journal)
- Registered Authors
- Appelbaum, Lior, Zada, David
- Keywords
- none
- MeSH Terms
-
- Animals
- Animals, Genetically Modified
- Cell Nucleus/genetics
- Cell Nucleus/metabolism
- Chromosomes/genetics*
- Chromosomes/metabolism
- DNA Breaks, Double-Stranded*
- DNA Repair/physiology*
- Female
- Male
- Microscopy, Confocal
- Models, Animal
- Neurons/cytology
- Neurons/metabolism*
- Sleep/physiology*
- Time-Lapse Imaging
- Zebrafish
- PubMed
- 30837464 Full text @ Nat. Commun.
Citation
Zada, D., Bronshtein, I., Lerer-Goldshtein, T., Garini, Y., Appelbaum, L. (2019) Sleep increases chromosome dynamics to enable reduction of accumulating DNA damage in single neurons. Nature communications. 10:895.
Abstract
Sleep is essential to all animals with a nervous system. Nevertheless, the core cellular function of sleep is unknown, and there is no conserved molecular marker to define sleep across phylogeny. Time-lapse imaging of chromosomal markers in single cells of live zebrafish revealed that sleep increases chromosome dynamics in individual neurons but not in two other cell types. Manipulation of sleep, chromosome dynamics, neuronal activity, and DNA double-strand breaks (DSBs) showed that chromosome dynamics are low and the number of DSBs accumulates during wakefulness. In turn, sleep increases chromosome dynamics, which are necessary to reduce the amount of DSBs. These results establish chromosome dynamics as a potential marker to define single sleeping cells, and propose that the restorative function of sleep is nuclear maintenance.
Genes / Markers
Expression
Phenotype
Mutations / Transgenics
Human Disease / Model
Sequence Targeting Reagents
Fish
Orthology
Engineered Foreign Genes
Mapping