Journal article
Yang Hu, A. Korovaichuk, M. Astiz, H. Schroeder, Rezaul Islam, Jon Barrenetxea, A. Fischer, H. Oster, H. Bringmann
Genetics, 2020
Genetics, 2020
Semantic Scholar
DOI
PubMedCentral
PubMed
Cite
Cite
APA
Click to copy
Hu, Y., Korovaichuk, A., Astiz, M., Schroeder, H., Islam, R., Barrenetxea, J., … Bringmann, H. (2020). Functional Divergence of Mammalian TFAP2a and TFAP2b Transcription Factors for Bidirectional Sleep Control. Genetics.
Chicago/Turabian
Click to copy
Hu, Yang, A. Korovaichuk, M. Astiz, H. Schroeder, Rezaul Islam, Jon Barrenetxea, A. Fischer, H. Oster, and H. Bringmann. “Functional Divergence of Mammalian TFAP2a and TFAP2b Transcription Factors for Bidirectional Sleep Control.” Genetics (2020).
MLA
Click to copy
Hu, Yang, et al. “Functional Divergence of Mammalian TFAP2a and TFAP2b Transcription Factors for Bidirectional Sleep Control.” Genetics, 2020.
BibTeX Click to copy
@article{yang2020a,
title = {Functional Divergence of Mammalian TFAP2a and TFAP2b Transcription Factors for Bidirectional Sleep Control},
year = {2020},
journal = {Genetics},
author = {Hu, Yang and Korovaichuk, A. and Astiz, M. and Schroeder, H. and Islam, Rezaul and Barrenetxea, Jon and Fischer, A. and Oster, H. and Bringmann, H.}
}
Abstract
Here, Hu et al. show that AP-2 transcription factors have diverged to take on bidirectional control of sleep in mammals. This is the first instance where a sleep gene is shown to have diversified in evolution ..... Sleep is a conserved behavioral state. Invertebrates typically show quiet sleep, whereas in mammals, sleep consists of periods of nonrapid-eye-movement sleep (NREMS) and REM sleep (REMS). We previously found that the transcription factor AP-2 promotes sleep in Caenorhabditis elegans and Drosophila. In mammals, several paralogous AP-2 transcription factors exist. Sleep-controlling genes are often conserved. However, little is known about how sleep genes evolved from controlling simpler types of sleep to govern complex mammalian sleep. Here, we studied the roles of Tfap2a and Tfap2b in sleep control in mice. Consistent with our results from C. elegans and Drosophila, the AP-2 transcription factors Tfap2a and Tfap2b also control sleep in mice. Surprisingly, however, the two AP-2 paralogs play contrary roles in sleep control. Tfap2a reduction of function causes stronger delta and theta power in both baseline and homeostasis analysis, thus indicating increased sleep quality, but did not affect sleep quantity. By contrast, Tfap2b reduction of function decreased NREM sleep time specifically during the dark phase, reduced NREMS and REMS power, and caused a weaker response to sleep deprivation. Consistent with the observed signatures of decreased sleep quality, stress resistance and memory were impaired in Tfap2b mutant animals. Also, the circadian period was slightly shortened. Taken together, AP-2 transcription factors control sleep behavior also in mice, but the role of the AP-2 genes functionally diversified to allow for a bidirectional control of sleep quality. Divergence of AP-2 transcription factors might perhaps have supported the evolution of more complex types of sleep.
