Model integration of circadian and sleep-wake driven contributions to rhythmic gene expression reveals novel regulatory principles
We monitored gene expression in the liver of 10-12 week-old male C57BL/6J mice for 24 hours before and until 48 hours after the end of a single total sleep deprivation (SD) episode. The aim was to characterise the response to SD and recovery thereafter. Overall design: Mice were sleep deprived for 6 hours starting at light onset (ZT0-ZT6; Time T24-T30) of the light-dark cycle. Control mice (NSD, Non Sleep Deprived) were sacrificed at ZT0, ZT3, ZT6, ZT12, ZT18 of the first day of experimentation (named samples T0-T24 and corresponding to the 24 hours before SD), serving as a baseline day (Day 0). On Day 1, SD mice were sacrificed at the same time of day as on Day 0 (samples T27-42, with T27 and T30 samples being taken after 3h and 6h SD, respectively), on Day 2 at ZT0, ZT6, ZT12, ZT18 (samples T48-66), as well as ZT0 and ZT6 on Day 3 (samples T72-78). Two groups of mice were allowed to recover for 7 days after SD, before being sacrificed at ZT0 and ZT6 (Day 8, samples T192-198). We collected 3-4 replicates per time point and condition, and 8 replicates of ZT0 controls from two different animal batches.