Abstract：
:The timing of food intake and nutrient utilization is critical to health and regulated partly by the circadian clock. Increased amplitude of circadian oscillations and metabolic output has been found to improve health in diabetic and obesity mouse models. Here, we report a function for the circadian deadenylase Nocturnin as a regulator of metabolic amplitude across the day/night cycle and in response to nutrient challenge. We show that mice lacking Nocturnin (Noct-/-) display significantly increased amplitudes of mRNA expression of hepatic genes encoding key metabolic enzymes regulating lipid and cholesterol synthesis, both over the daily circadian cycle and in response to fasting and refeeding. Noct-/- mice have increased plasma triglyceride throughout the night and increased amplitude of hepatic cholesterol levels. Therefore, posttranscriptional control by Nocturnin regulates the amplitude of these critical metabolic pathways, and loss of this activity results in increased metabolic flux and reduced obesity.
journal_name
Cell Repjournal_title
Cell reportsauthors
Stubblefield JJ,Gao P,Kilaru G,Mukadam B,Terrien J,Green CBdoi
10.1016/j.celrep.2018.01.011subject
Has Abstractpub_date
2018-01-30 00:00:00pages
1225-1235issue
5issn
2211-1247pii
S2211-1247(18)30028-7journal_volume
22pub_type
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