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Nicolaisen 2020 FASEB J

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Publications in the MiPMap
Nicolaisen TS, Klein AB, Dmytriyeva O, Lund J, Ingerslev LR, Fritzen AM, Carl CS, Lundsgaard AM, Frost M, Ma T, Schjerling P, Gerhart-Hines Z, Flamant F, Gauthier K, Larsen S, Richter EA, Kiens B, Clemmensen C (2020) Thyroid hormone receptor α in skeletal muscle is essential for T3-mediated increase in energy expenditure. FASEB J 34:15480-91.

» PMID: 32969079 Open Access

Nicolaisen Trine S, Klein Anders B, Dmytriyeva Oksana, Lund Jens, Ingerslev Lars R, Fritzen Andreas M, Carl Christian S, Lundsgaard Anne-Marie, Frost Mikkel, Ma Tao, Schjerling Peter, Gerhart-Hines Zachary, Flamant Frederic, Gauthier Karine, Larsen Steen, Richter Erik A, Kiens Bente, Clemmensen Christoffer (2020) FASEB J

Abstract: Thyroid hormones are important for homeostatic control of energy metabolism and body temperature. Although skeletal muscle is considered a key site for thyroid action, the contribution of thyroid hormone receptor signaling in muscle to whole-body energy metabolism and body temperature has not been resolved. Here, we show that T3-induced increase in energy expenditure requires thyroid hormone receptor alpha 1 (TRα1) in skeletal muscle, but that T3-mediated elevation in body temperature is achieved in the absence of muscle-TRα1. In slow-twitch soleus muscle, loss-of-function of TRα1 (TRαHSACre) alters the fiber-type composition toward a more oxidative phenotype. The change in fiber-type composition, however, does not influence the running capacity or motivation to run. RNA-sequencing of soleus muscle from WT mice and TRαHSACre mice revealed differentiated transcriptional regulation of genes associated with muscle thermogenesis, such as sarcolipin and UCP3, providing molecular clues pertaining to the mechanistic underpinnings of TRα1 -linked control of whole-body metabolic rate. Together, this work establishes a fundamental role for skeletal muscle in T3-stimulated increase in whole-body energy expenditure. Keywords: Energy expenditure, Energy metabolism, Skeletal muscle, Thyroid hormone Bioblast editor: Plangger M O2k-Network Lab: NO Tromsoe Larsen TS, DK Copenhagen Gerhart-Hines Z, DK Copenhagen Larsen S

Labels: MiParea: Respiration, Genetic knockout;overexpression, Pharmacology;toxicology 

Organism: Mouse  Tissue;cell: Skeletal muscle  Preparation: Permeabilized tissue 

Coupling state: LEAK, OXPHOS  Pathway: N, NS  HRR: Oxygraph-2k