Article (Scientific journals)
DNA Methylation Regulates Transcription Factor-Specific Neurodevelopmental but Not Sexually Dimorphic Gene Expression Dynamics in Zebra Finch Telencephalon
Diddens, Jolien; Coussement, Louis; Frankl-Vilches, Carolina et al.
2021In Frontiers in Cell and Developmental Biology, 9, p. 583555
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Keywords :
DNA methylation; brain development; dosage compensation; epigenetics; gene expression; song learning; zebra finch.
Abstract :
[en] Song learning in zebra finches (Taeniopygia guttata) is a prototypical example of a complex learned behavior, yet knowledge of the underlying molecular processes is limited. Therefore, we characterized transcriptomic (RNA-sequencing) and epigenomic (RRBS, reduced representation bisulfite sequencing; immunofluorescence) dynamics in matched zebra finch telencephalon samples of both sexes from 1 day post hatching (1 dph) to adulthood, spanning the critical period for song learning (20 and 65 dph). We identified extensive transcriptional neurodevelopmental changes during postnatal telencephalon development. DNA methylation was very low, yet increased over time, particularly in song control nuclei. Only a small fraction of the massive differential expression in the developing zebra finch telencephalon could be explained by differential CpG and CpH DNA methylation. However, a strong association between DNA methylation and age-dependent gene expression was found for various transcription factors (i.e., OTX2, AR, and FOS) involved in neurodevelopment. Incomplete dosage compensation, independent of DNA methylation, was found to be largely responsible for sexually dimorphic gene expression, with dosage compensation increasing throughout life. In conclusion, our results indicate that DNA methylation regulates neurodevelopmental gene expression dynamics through steering transcription factor activity, but does not explain sexually dimorphic gene expression patterns in zebra finch telencephalon.
Research Center/Unit :
Giga-Neurosciences - ULiège
Disciplines :
Neurosciences & behavior
Author, co-author :
Diddens, Jolien
Coussement, Louis
Frankl-Vilches, Carolina
Majumbar, Gaurav
Steyaert, Sandra
Ter Haar, Sita
Galle, Jeroen
De Meester, Ellen
De Keulenaer, Sarah
Van Criekinge, Wim
Cornil, Charlotte  ;  Université de Liège - ULiège > GIGA Neurosciences - Neuroendocrinology
Balthazart, Jacques  ;  Université de Liège - ULiège > Département des sciences biomédicales et précliniques > Département des sciences biomédicales et précliniques
Van Der Linden, Annemie
De Meyer, Tim
Vanden Berghe, Wim
More authors (5 more) Less
Language :
English
Title :
DNA Methylation Regulates Transcription Factor-Specific Neurodevelopmental but Not Sexually Dimorphic Gene Expression Dynamics in Zebra Finch Telencephalon
Publication date :
2021
Journal title :
Frontiers in Cell and Developmental Biology
eISSN :
2296-634X
Publisher :
Frontiers, Lausanne, Switzerland
Volume :
9
Pages :
583555
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
Interuniversity Attraction Poles Programme
Available on ORBi :
since 07 July 2021

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