Abstract:
:Exercise induces expression of the myokine irisin, which is known to promote browning of white adipose tissue and has been shown to mediate beneficial effects following exercise. Here we show that irisin induces expression of a number of pro-myogenic and exercise response genes in myotubes. Irisin increases myogenic differentiation and myoblast fusion via activation of IL6 signaling. Injection of irisin in mice induces significant hypertrophy and enhances grip strength of uninjured muscle. Following skeletal muscle injury, irisin injection improves regeneration and induces hypertrophy. The effects of irisin on hypertrophy are due to activation of satellite cells and enhanced protein synthesis. In addition, irisin injection rescues loss of skeletal muscle mass following denervation by enhancing satellite cell activation and reducing protein degradation. These data suggest that irisin functions as a pro-myogenic factor in mice.
journal_name
Nat Communjournal_title
Nature communicationsauthors
Reza MM,Subramaniyam N,Sim CM,Ge X,Sathiakumar D,McFarlane C,Sharma M,Kambadur Rdoi
10.1038/s41467-017-01131-0subject
Has Abstractpub_date
2017-10-24 00:00:00pages
1104issue
1issn
2041-1723pii
10.1038/s41467-017-01131-0journal_volume
8pub_type
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