Muscle satellite cell activation pathway

The "Muscle satellite cell activation pathway" does not correspond to a single molecule, receptor, or conventional drug target; rather, it refers to a complex set of signaling pathways and molecular events that activate quiescent muscle satellite cells (skeletal muscle stem cells) from their dormant state in response to stimuli such as injury or exercise. Key pathways and regulators include hepatocyte growth factor (HGF)/c-Met, insulin-like growth factor 1 (IGF-1), Wnt/Frizzled, p38 MAPK, and others. These pathways enable satellite cells to exit quiescence, proliferate, and either self-renew to maintain the satellite cell pool or differentiate into myogenic cells that regenerate muscle fibers. Canonical experimental and clinical markers of activation include Pax7, Myf5, MyoD, and myogenin expression. Although dysregulation of these pathways contributes to various muscle diseases and may be studied as potential drug targets, "satellite cell activation pathways" is not itself a discrete therapeutic target but an umbrella term for a variety of molecular drug targets and signaling cascades[1][2][3][4][5][6].

Other names

Satellite cell activation pathwaySkeletal muscle stem cell activation pathway