The function of muscle progenitor cells is tightly regulated through various signaling pathways. Upon muscle injury, these cells are activated and enter the cell cycle to proliferate. They then differentiate into myoblasts, which further fuse to form new muscle fibers or integrate into existing fibers. Key signaling molecules, such as Notch, Wnt, and Hedgehog, play significant roles in regulating the activation, proliferation, and differentiation of these cells.
