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Usage Information

microRNA-206 promotes skeletal muscle regeneration and delays progression of Duchenne muscular dystrophy in mice
Ning Liu, … , Rhonda Bassel-Duby, Eric N. Olson
Ning Liu, … , Rhonda Bassel-Duby, Eric N. Olson
Published May 1, 2012
Citation Information: J Clin Invest. 2012;122(6):2054-2065. https://doi.org/10.1172/JCI62656.
View: Text | PDF
Research Article Muscle biology

microRNA-206 promotes skeletal muscle regeneration and delays progression of Duchenne muscular dystrophy in mice

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Abstract

Skeletal muscle injury activates adult myogenic stem cells, known as satellite cells, to initiate proliferation and differentiation to regenerate new muscle fibers. The skeletal muscle–specific microRNA miR-206 is upregulated in satellite cells following muscle injury, but its role in muscle regeneration has not been defined. Here, we show that miR-206 promotes skeletal muscle regeneration in response to injury. Genetic deletion of miR-206 in mice substantially delayed regeneration induced by cardiotoxin injury. Furthermore, loss of miR-206 accelerated and exacerbated the dystrophic phenotype in a mouse model of Duchenne muscular dystrophy. We found that miR-206 acts to promote satellite cell differentiation and fusion into muscle fibers through suppressing a collection of negative regulators of myogenesis. Our findings reveal an essential role for miR-206 in satellite cell differentiation during skeletal muscle regeneration and indicate that miR-206 slows progression of Duchenne muscular dystrophy.

Authors

Ning Liu, Andrew H. Williams, Johanna M. Maxeiner, Svetlana Bezprozvannaya, John M. Shelton, James A. Richardson, Rhonda Bassel-Duby, Eric N. Olson

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