Guanosine 5'-triphosphate (5'-GTP, Guanosine triphosphate, H4GTP) trisodium salt is an enhancer of myogenic cell differentiation in a murine cells. Guanosine 5'-triphosphate trisodium salt up-regulates miRNA (specifically miR133a and miR133b) and myogenic regulator factor and induces human myogenic precursor cells to release exosomes stuffed with guanosine based molecules (mainly guanosine) in the extracellular milieu.