Caputo Luca, Stamenkovic Cedomir, Tierney Matthew T, Falzarano Maria Sofia, Bassel-Duby Rhonda, Ferlini Alessandra, Olson Eric N, Puri Pier Lorenzo, Sacco Alessandra
Sanford Burnham Prebys Medical Discovery Institute, Development, Aging and Regeneration Program, La Jolla, CA 92037, USA.
Graduate School of Biomedical Sciences, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, CA 92037, USA.
bioRxiv. 2024 Dec 10:2024.12.09.624203. doi: 10.1101/2024.12.09.624203.
Generation of induced pluripotent cells (hiPSCs)-derived skeletal muscle progenitor cells (SMPCs) holds great promise for regenerative medicine for skeletal muscle wasting diseases, as for example Duchenne Muscular Dystrophy (DMD). Multiple approaches, involving ectopic expression of key regulatory myogenic genes or small molecules cocktails, have been described by different groups to obtain SMPC towards cell-transplantation as a therapeutic approach to skeletal muscle diseases. However, hiPSCs-derived SMPC generated using transgene-free protocols are usually obtained in a low amount and resemble a more embryonal/fetal stage of differentiation. Here we demonstrate that modulation of the JAK2/STAT3 signaling pathway during an skeletal muscle differentiation protocol, increases the yield of and SMPCs and drive them to a postnatal maturation stage, in both human ES and patient-derived iPSCs. Importantly, upon removal of the inhibition from the cultures, the obtained SMPCs are able to differentiate into multinucleated myotubes These findings reveal that modulation of the JAK2/STAT3 signaling pathway is a potential therapeutic avenue to generate SMPCs with increase potential for cell-therapy approaches.
诱导多能干细胞(hiPSC)来源的骨骼肌祖细胞(SMPC)的产生,对于骨骼肌萎缩疾病(如杜氏肌营养不良症,DMD)的再生医学具有巨大的前景。不同的研究小组描述了多种方法,包括关键调节性肌源性基因的异位表达或小分子混合物,以获得SMPC用于细胞移植,作为治疗骨骼肌疾病的一种方法。然而,使用无转基因方案产生的hiPSC来源的SMPC通常产量较低,并且类似于更胚胎/胎儿阶段的分化。在这里,我们证明,在骨骼肌分化方案中对JAK2/STAT3信号通路进行调节,可提高人胚胎干细胞(ES)和患者来源的诱导多能干细胞(iPSC)中SMPC的产量,并将它们驱动到出生后成熟阶段。重要的是,在从培养物中去除抑制作用后,所获得的SMPC能够分化为多核肌管。这些发现表明,调节JAK2/STAT3信号通路是产生具有更高细胞治疗潜力的SMPC的潜在治疗途径。