Details

Autor(en) / Beteiligte

• Mayeuf-Louchart, Alicia
• Lancel, Steve
• Sebti, Yasmine
• Pourcet, Benoit
• Loyens, Anne
• Delhaye, Stéphane
• Duhem, Christian
• Beauchamp, Justine
• Ferri, Lise
• Thorel, Quentin
• Boulinguiez, Alexis
• Zecchin, Mathilde
• Dubois-Chevalier, Julie
• Eeckhoute, Jérôme
• Vaughn, Logan T.
• Roach, Peter J.
• Dani, Christian
• Pederson, Bartholomew A.
• Vincent, Stéphane D.
• Staels, Bart
• Duez, Hélène

Titel

Glycogen Dynamics Drives Lipid Droplet Biogenesis during Brown Adipocyte Differentiation

Ist Teil von

• Cell reports (Cambridge), 2019-11, Vol.29 (6), p.1410-1418.e6

Ort / Verlag

United States: Elsevier Inc

Erscheinungsjahr

2019

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Browning induction or transplantation of brown adipose tissue (BAT) or brown/beige adipocytes derived from progenitor or induced pluripotent stem cells (iPSCs) can represent a powerful strategy to treat metabolic diseases. However, our poor understanding of the mechanisms that govern the differentiation and activation of brown adipocytes limits the development of such therapy. Various genetic factors controlling the differentiation of brown adipocytes have been identified, although most studies have been performed using in vitro cultured pre-adipocytes. We investigate here the differentiation of brown adipocytes from adipose progenitors in the mouse embryo. We demonstrate that the formation of multiple lipid droplets (LDs) is initiated within clusters of glycogen, which is degraded through glycophagy to provide the metabolic substrates essential for de novo lipogenesis and LD formation. Therefore, this study uncovers the role of glycogen in the generation of LDs. [Display omitted] •Brown adipocytes are functionally differentiated at E17.5 in the mouse embryo•Lipid droplets are formed within glycogen clusters•Glycogen production is crucial for lipid droplet biogenesis during BAT differentiation•Glycophagy-mediated glycogen degradation drives lipid droplet formation Lipid droplet formation is a major feature of brown adipocyte differentiation. Mayeuf-Louchart et al. characterize the different steps of brown adipocyte differentiation in the mouse embryo and report the essential role of glycogen production and degradation by glycophagy for lipid droplet biogenesis.