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Muscle PGC-1α modulates satellite cell number and proliferation by remodeling the stem cell niche

Dinulovic, Ivana and Furrer, Regula and Beer, Markus and Ferry, Arnaud and Cardel, Bettina and Handschin, Christoph. (2016) Muscle PGC-1α modulates satellite cell number and proliferation by remodeling the stem cell niche. Skeletal Muscle, 6 (1). p. 39.

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Abstract

BACKGROUND: The myogenic capacity of satellite cells (SCs), adult muscle stem cells, is influenced by aging, exercise, and other factors. In skeletal muscle, the peroxisome proliferator-activated receptor γ coactivator 1α (PGC-1α) is a key regulator of oxidative metabolism and endurance training adaptation. However, a link between PGC-1α and SC behavior remains unexplored.
METHODS: We have now studied SC function in a PGC-1α fiber-specific gain-of-function animal model.
RESULTS: In surprising contrast to bona fide exercise, muscle-specific PGC-1α transgenic mice have lower SC numbers. Nevertheless, SCs from these mice have a higher propensity for activation and proliferation. Intriguingly, muscle PGC-1α triggers a remodeling of the SC niche by altering the extracellular matrix composition, including the levels of fibronectin, which affects the proliferative output of SCs.
CONCLUSIONS: Taken together, PGC-1α indirectly affects SC plasticity in skeletal muscle and thereby might contribute to improved SC activation in exercise.
Faculties and Departments:03 Faculty of Medicine > Departement Biomedizin > Associated Research Groups > Pharmakologie (Handschin)
05 Faculty of Science > Departement Biozentrum > Growth & Development > Growth & Development (Handschin)
UniBasel Contributors:Handschin, Christoph
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:BioMed Central
e-ISSN:2044-5040
Note:Publication type according to Uni Basel Research Database: Journal article
Language:English
Identification Number:
Last Modified:08 Dec 2016 14:39
Deposited On:08 Dec 2016 14:39

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