Intercellular: local and systemic actions of skeletal muscle PGC-1s.
Physical exercise promotes complex adaptations in skeletal muscle that benefit various aspects of human health. Many of these adaptations are coordinated at the gene expression level by the concerted action of transcriptional regulators. Peroxisome proliferator-activated receptor gamma (PPARγ) coactivator-1 (PGC-1) proteins play a prominent role in skeletal muscle transcriptional reprogramming induced by numerous stimuli. PGC-1s are master coactivators that orchestrate broad gene programs to modulate fuel supply and mitochondrial function, thus improving cellular energy metabolism. Recent studies unveiled novel biological functions for PGC-1s that extend well beyond skeletal muscle bioenergetics. Here we review recent advances in our understanding of PGC-1 actions in skeletal muscle, with special focus on their systemic effects.
Molecular and Cellular Exercise Physiology, Department of Physiology and Pharmacology, Karolinska Institutet, SE-17177 Stockholm, Sweden.
Jorge C
JC
Correia
Molecular and Cellular Exercise Physiology, Department of Physiology and Pharmacology, Karolinska Institutet, SE-17177 Stockholm, Sweden.
Duarte M S
DM
Ferreira
Molecular and Cellular Exercise Physiology, Department of Physiology and Pharmacology, Karolinska Institutet, SE-17177 Stockholm, Sweden. Electronic address: Jorge.ruas@ki.se.
Jorge L
JL
Ruas
D000818:Animals; D004734:Energy Metabolism / Q000235:genetics / Q000502:physiology; D015444:Exercise / Q000502:physiology; D006801:Humans; D018482:Muscle, Skeletal / Q000378:metabolism*; D014157:Transcription Factors / Q000378:metabolism*
D014157:Transcription Factors; C111264:peroxisome-proliferator-activated receptor-gamma coactivator-1
PGC-1; atrophy; coactivators; hypertrophy; metabolism; skeletal muscle