Myonuclear domain flexibility challenges rigid assumptions on satellite cell contribution to skeletal muscle fiber hypertrophy
KA Murach, DA Englund… - Frontiers in …, 2018 - frontiersin.org
Satellite cell-mediated myonuclear accretion is thought to be required for skeletal muscle
fiber hypertrophy, and even drive hypertrophy by preceding growth. Recent studies in …
fiber hypertrophy, and even drive hypertrophy by preceding growth. Recent studies in …
Point: Counterpoint: Satellite cell addition is/is not obligatory for skeletal muscle hypertrophy
RS O'Connor, GK Pavlath - Journal of applied physiology, 2007 - journals.physiology.org
Myofiber size is dynamically regulated, increasing and decreasing depending on muscle
use. Hypertrophy is defined by increases in myofiber cross-sectional area and mass as well …
use. Hypertrophy is defined by increases in myofiber cross-sectional area and mass as well …
Starring or supporting role? Satellite cells and skeletal muscle fiber size regulation
Recent loss-of-function studies show that satellite cell depletion does not promote
sarcopenia or unloading-induced atrophy, and does not prevent regrowth. Although …
sarcopenia or unloading-induced atrophy, and does not prevent regrowth. Although …
Exercise promotes satellite cell contribution to myofibers in a load-dependent manner
E Masschelein, G D'Hulst, J Zvick, L Hinte… - Skeletal muscle, 2020 - Springer
Abstract Background Satellite cells (SCs) are required for muscle repair following injury and
are involved in muscle remodeling upon muscular contractions. Exercise stimulates SC …
are involved in muscle remodeling upon muscular contractions. Exercise stimulates SC …
Satellite cell depletion prevents fiber hypertrophy in skeletal muscle
IM Egner, JC Bruusgaard, K Gundersen - Development, 2016 - journals.biologists.com
The largest mammalian cells are the muscle fibers, and they have multiple nuclei to support
their large cytoplasmic volumes. During hypertrophic growth, new myonuclei are recruited …
their large cytoplasmic volumes. During hypertrophic growth, new myonuclei are recruited …
Myonuclear transcriptional dynamics in response to exercise following satellite cell depletion
Skeletal muscle is composed of post-mitotic myofibers that form a syncytium containing
hundreds of myonuclei. Using a progressive exercise training model in the mouse and …
hundreds of myonuclei. Using a progressive exercise training model in the mouse and …
[HTML][HTML] Fusion and beyond: Satellite cell contributions to loading‐induced skeletal muscle adaptation
Satellite cells support adult skeletal muscle fiber adaptations to loading in numerous ways.
The fusion of satellite cells, driven by cell‐autonomous and/or extrinsic factors, contributes …
The fusion of satellite cells, driven by cell‐autonomous and/or extrinsic factors, contributes …
Satellite cell depletion does not inhibit adult skeletal muscle regrowth following unloading-induced atrophy
Resident muscle stem cells, known as satellite cells, are thought to be the main mediators of
skeletal muscle plasticity. Satellite cells are activated, replicate, and fuse into existing …
skeletal muscle plasticity. Satellite cells are activated, replicate, and fuse into existing …
Fusion-independent satellite cell communication to muscle fibers during load-induced hypertrophy
KA Murach, IJ Vechetti Jr, DW Van Pelt, SE Crow… - Function, 2020 - academic.oup.com
The “canonical” function of Pax7+ muscle stem cells (satellite cells) during hypertrophic
growth of adult muscle fibers is myonuclear donation via fusion to support increased …
growth of adult muscle fibers is myonuclear donation via fusion to support increased …
Effective fiber hypertrophy in satellite cell-depleted skeletal muscle
An important unresolved question in skeletal muscle plasticity is whether satellite cells are
necessary for muscle fiber hypertrophy. To address this issue, a novel mouse strain (Pax7 …
necessary for muscle fiber hypertrophy. To address this issue, a novel mouse strain (Pax7 …