Rapid Response and Slow Recovery of the H3K4me3 Epigenomic Marker in the Liver after Light-mediated Phase Advances of the Circadian Clock

Dmytro Grygoryev, Michael R. Rountree, Furaha Rwatambuga, Anna Ohlrich, Ayaka Kukino, Matthew Butler, Charles Allen, Mitchell Turker

Research output: Contribution to journalArticle

Abstract

Mammalian tissues display circadian rhythms in transcription, translation, and histone modifications. Here we asked how an advance of the light-dark cycle alters daily rhythms in the liver epigenome at the H3K4me3 (trimethylation of lysine 4 on histone 3) modification, which is found at active and poised gene promoters. H3K4me3 levels were first measured at 4 time points (zeitgeber time [ZT] 3, 8, 15, and 20) during a normal 12L:12D light-dark cycle. Peak levels were observed during the early dark phase at ZT15 and dropped to low levels around lights-on (ZT0) between ZT20 and ZT3. A 6-h phase advance at ZT18 (new lights-on after only 6 h of darkness) led to a transient extension of peak H3K4me3 levels. Although locomotor activity reentrained within a week after the phase advance, H3K4me3 rhythms failed to do so, with peak levels remaining in the light phase at the 1-week recovery time point. Eight weekly phase advances, with 1-week recovery times between each phase advance, further disrupted the H3K4me3 rhythms. Finally, we used the mPer2Luc knockin mouse to determine whether the phase advance also disrupted Per2 protein expression. Similar to the results from the histone work, we found both a rapid response to the phase advance and a delayed recovery, the latter in sync with H3K4me3 levels. A model to explain these results is offered.

Original languageEnglish (US)
JournalJournal of Biological Rhythms
DOIs
StateAccepted/In press - Jun 1 2018

Fingerprint

Circadian Clocks
Epigenomics
Histone Code
Light
Liver
Photoperiod
Darkness
Locomotion
Circadian Rhythm
Histones
Lysine
Genes
Proteins

Keywords

  • circadian disruption
  • circadian epigenome
  • histone methylation
  • peripheral tissue
  • phase advance

ASJC Scopus subject areas

  • Physiology
  • Physiology (medical)

Cite this

Rapid Response and Slow Recovery of the H3K4me3 Epigenomic Marker in the Liver after Light-mediated Phase Advances of the Circadian Clock. / Grygoryev, Dmytro; Rountree, Michael R.; Rwatambuga, Furaha; Ohlrich, Anna; Kukino, Ayaka; Butler, Matthew; Allen, Charles; Turker, Mitchell.

In: Journal of Biological Rhythms, 01.06.2018.

Research output: Contribution to journalArticle

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