Obesity Remodels Activity and Transcriptional State of a Lateral Hypothalamic Brake on Feeding

Overview

Journal Science

Specialty Science

Date 2019 Jun 29

PMID 31249056

Citations 73

Authors

Mark A Rossi

Marcus L Basiri

Jenna A McHenry

Oksana Kosyk

James M Otis

Hanna E van den Munkhof

Julien Bryois

Christopher Hubel

Gerome Breen

Wilson Guo

Cynthia M Bulik

Patrick F Sullivan

Garret D Stuber

Affiliations

Soon will be listed here.

Abstract

The current obesity epidemic is a major worldwide health concern. Despite the consensus that the brain regulates energy homeostasis, the neural adaptations governing obesity are unknown. Using a combination of high-throughput single-cell RNA sequencing and longitudinal in vivo two-photon calcium imaging, we surveyed functional alterations of the lateral hypothalamic area (LHA)-a highly conserved brain region that orchestrates feeding-in a mouse model of obesity. The transcriptional profile of LHA glutamatergic neurons was affected by obesity, exhibiting changes indicative of altered neuronal activity. Encoding properties of individual LHA glutamatergic neurons were then tracked throughout obesity, revealing greatly attenuated reward responses. These data demonstrate how diet disrupts the function of an endogenous feeding suppression system to promote overeating and obesity.

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