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Thermal stress induces glycolytic beige fat formation via a myogenic state
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Journal Article
Thermal stress induces glycolytic beige fat formation via a myogenic state
2019
Overview
Environmental cues profoundly affect cellular plasticity in multicellular organisms. For instance, exercise promotes a glycolytic-to-oxidative fibre-type switch in skeletal muscle, and cold acclimation induces beige adipocyte biogenesis in adipose tissue. However, the molecular mechanisms by which physiological or pathological cues evoke developmental plasticity remain incompletely understood. Here we report a type of beige adipocyte that has a critical role in chronic cold adaptation in the absence of β-adrenergic receptor signalling. This beige fat is distinct from conventional beige fat with respect to developmental origin and regulation, and displays enhanced glucose oxidation. We therefore refer to it as glycolytic beige fat. Mechanistically, we identify GA-binding protein α as a regulator of glycolytic beige adipocyte differentiation through a myogenic intermediate. Our study reveals a non-canonical adaptive mechanism by which thermal stress induces progenitor cell plasticity and recruits a distinct form of thermogenic cell that is required for energy homeostasis and survival.
The mouse develops a developmentally and functionally distinct, non-canonical beige fat cell type as an adaptation to cold ambient temperature.
Publisher
Nature Publishing Group UK,Nature Publishing Group
Subject
/ 14
/ 14/19
/ 14/34
/ 38
/ 64
/ 64/60
/ Adipose Tissue, Beige - cytology
/ Adipose Tissue, Beige - metabolism
/ Adipose Tissue, White - cytology
/ Adipose Tissue, White - metabolism
/ Animals
/ Cold
/ GA-Binding Protein Transcription Factor - metabolism
/ Glucose
/ Humanities and Social Sciences
/ Male
/ Mice
/ Muscles
/ Oxidation-reduction reactions
/ Proteins
/ Receptors, Adrenergic, beta - metabolism
/ Rodents
/ Science
