San Raffaele Hospital 1 article published in JoVE Bioengineering Transplantation of Induced Pluripotent Stem Cell-derived Mesoangioblast-like Myogenic Progenitors in Mouse Models of Muscle Regeneration Mattia F. M. Gerli*1, Sara M. Maffioletti*1, Queensta Millet1, Francesco Saverio Tedesco1,2 1Department of Cell and Developmental Biology, University College London, 2Division of Regenerative Medicine, Stem Cells and Gene Therapy, San Raffaele Hospital Induced pluripotent stem cell (iPSC)-derived myogenic progenitors are promising candidates for cell therapy strategies to treat muscular dystrophies. This protocol describes transplantation and functional measurements required to evaluate the engraftment and differentiation of iPSC-derived mesoangioblasts (a type of muscle progenitors) in mouse models of acute and chronic muscle regeneration.