Expression profiling by high throughput sequencing
Summary
Alignment of fasting and feeding with the sleep/wake cycle is coordinated by hypothalamic neurons, though the underlying molecular programs remain incompletely understood. Here we demonstrate that the clock transcription pathway maximizes eating during wakefulness and glucose production during sleep through transcription pathway maximizes eating during autonomous circadian regulation of NPY/AgRP neurons. Tandem profiling of whole cell and ribosome-bound mRNAs in morning and evening under dynamic fasting and fed conditions identified temporal control of activity-dependent gene repertoires in AgRP neurons central to synaptogenesis, bioenergetics, and neurotransmitter and peptidergic signaling. Synaptic and circadian pathways were specific to whole cell RNA analyses, while bioenergetic pathways were selectively enriched in the ribosome-bound transcriptome. Finally, we demonstrate that the AgRP clock mediates the transcriptional food acquisition with sleep/wake state. response to leptin. Our results reveal that time-of-day restriction in transcriptional control of energy-sensing neurons underlies the alignment of hunger and day restriction in transcriptional control of energy-sensing neurons underlies the alignment of hunger and food acquisition with sleep/wake state.
Overall design
Examination of AGRP neurons including BMAL1-KO, under 3 different nutrient states, leptin adiministration, and time of day collection points.
Jonathan Cedernaes, Wenyu Huang, Kathryn Moynihan Ramsey, Nathan Waldeck, Lei Cheng, Biliana Marcheva, Chiaki Omura, Yumiko Kobayashi, Clara Bien Peek, Daniel C. Levine, Ravindra Dhir, Raj Awatramani, Christopher A. Bradfield, Xiaozhong A. Wang, Joseph S. Takahashi, Mohamad Mokadem, Rexford S. Ahima, and Joseph Bass. Transcriptional Basis for Rhythmic Control of Hunger and Metabolism within the AgRP Neuron. Cell Metabolism 2019; doi:10.1016/j.cmet.2019.01.023
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