NewslettersMuscle Cell News The Mitochondrial Protein OPA1 Regulates the Quiescent State of Adult Muscle Stem Cells By lbeveridge - August 29, 2022 0 Investigators showed that muscle stem cells mitochondria rapidly fragmented upon an activation stimulus, via systemic HGF/mTOR, to drive the exit from deep quiescence. [Cell Stem Cell] Full Article