Interactions between cerebral clocks and food intake: temporal and metabolic aspects
Project leaders : Patrick Vuillez & Etienne Challet
The ability to predict and anticipate mealtime is likely a key for survival in most animals. In response to daily limited access to food, animals express food-anticipatory activity, a behavior considered as an output of a network of food-entrainable cerebral clocks, called the “food clock”. Our pioneering work has revealed that the cerebellum contains a self-sustained clock belonging to the circadian network of the food clock, also involving the metabolic hypothalamus and brainstem. Regarding molecular mechanisms of the food clock, our recent work revealed that the circadian gene Rev-erbα is required for the food clock. Currently, we investigate which brain clocks control the daily feeding/fasting cycle and meal anticipation, and what are the chronomodulators linked to meal time that reset the food clock. The oscillating properties of the food-entrainable cerebral network are characterized in organotypic slices using in vitro bioluminescence recording
Fabrice Bertile (IPHC, CNRS and Univ Strasbourg, F)
Khalid El Allali (Hassan II Agronomy & Veterinary Inst, MO)
Andries Kalsbeek (Univ Amsterdam, NL)
Chantal Mathis (LNCA, CNRS, Univ Strasbourg)
Ralph Mistlberger (Univ Burnaby, CA)
Marie-Pierre Moisan et Guillaume Ferreira (NutriNeuro, INRAE, CNRS, Univ Bordeaux)
Ute Rogner (Institut Cochin, Paris)
|Fondation pour la Recherche Médicale (FRM)|
|Fédération pour la Recherche sur le Cerveau (FRC)|
Sen S, Dumont S, Sage-Ciocca D, Reibel S, de Goede P, Kalsbeek A, Challet E (2018). Expression of the clock gene Rev-erba in the brain controls the circadian organization of food intake and locomotor activity, but not daily variations of energy metabolism. J Neuroendocrinol 30: e12557.
Sen S, Raingard H, Dumont S, Kalsbeek A, Vuillez P, Challet E (2017). Ultradian feeding in mice not only affects the peripheral clock in the liver, but also the master clock in the brain. Chronobiol Int 34: 17-36.
Delezie J, Dumont S, Sandu C, Reibel S, Pevet P, Challet E (2016) Rev-erba in the brain is essential for circadian food entrainment. Sci Rep 6: 29386.