RT Journal Article T1 Isolation and characterization of myogenic precursor cells from human cremaster muscle. A1 Naldaiz-Gastesi, Neia A1 Goicoechea, Maria A1 Aragon, Isabel M-ª A1 Perez-Lopez, Virginia A1 Fuertes-Alvarez, Sandra A1 Herrera-Imbroda, Bernardo A1 Lopez-de-Munain, Adolfo A1 de-Luna-Diaz, Resi A1 Baptista, Pedro M A1 Fernandez, M Alejandro A1 Lara, Maria Fernanda A1 Izeta, Ander K1 Skeletal muscle K1 Cremaster muscle K1 Mesenchymal stem cells K1 Myogenic precursor cells K1 Satellite cells K1 Muscle regeneration K1 Cell culture K1 Cell therapy K1 Stem cell transplantation K1 Urinary incontinence AB Human myogenic precursor cells have been isolated and expanded from a number of skeletal muscles, but alternative donor biopsy sites must be sought after in diseases where muscle damage is widespread. Biopsy sites must be relatively accessible, and the biopsied muscle dispensable. Here, we aimed to histologically characterize the cremaster muscle with regard number of satellite cells and regenerative fibres, and to isolate and characterize human cremaster muscle-derived stem/precursor cells in adult male donors with the objective of characterizing this muscle as a novel source of myogenic precursor cells. Cremaster muscle biopsies (or adjacent non-muscle tissue for negative controls; N = 19) were taken from male patients undergoing routine surgery for urogenital pathology. Myosphere cultures were derived and tested for their in vitro and in vivo myogenic differentiation and muscle regeneration capacities. Cremaster-derived myogenic precursor cells were maintained by myosphere culture and efficiently differentiated to myotubes in adhesion culture. Upon transplantation to an immunocompromised mouse model of cardiotoxin-induced acute muscle damage, human cremaster-derived myogenic precursor cells survived to the transplants and contributed to muscle regeneration. These precursors are a good candidate for cell therapy approaches of skeletal muscle. Due to their location and developmental origin, we propose that they might be best suited for regeneration of the rhabdosphincter in patients undergoing stress urinary incontinence after radical prostatectomy. PB Nature Publishing Group YR 2019 FD 2019-03-05 LK http://hdl.handle.net/10668/13662 UL http://hdl.handle.net/10668/13662 LA en NO Naldaiz-Gastesi N, Goicoechea M, Aragón IM, Pérez-López V, Fuertes-Alvarez S, et al. Isolation and characterization of myogenic precursor cells from human cremaster muscle. Sci Rep. 2019 Mar 5;9(1):3454. DS RISalud RD Oct 6, 2025