长期移植和卫星细胞扩张来自人类PSC瘤衍生的肌源性原始细胞
Zahra Khosrowpour1,2,3, Nivedha Ramaswamy1,2,3, Elise N Engquist1,2,3
1Lillehei Heart Institute, University of Minnesota, Minneapolis, MN 55455, USA.
Cells
|August 13, 2025
概括
人类诱导的多能干细胞衍生的瘤产生骨肌原性祖先. 这些细胞表现出长期的肌肉再生,并在体内形成稳定,自我更新的卫星细胞池.
科学领域:
- 干细胞生物学 干细胞生物学
- 再生医学是一种再生医学.
- 肌肉生理学 肌肉生理学
背景情况:
- 骨肌肉的再生取决于肌源性祖先和卫星细胞.
- 人类诱导的多能干细胞 (hiPSC) 衍生的瘤提供了这些祖先的来源.
- 之前的研究只提供了关于它们的再生能力的短期数据.
研究的目的:
- 评估 hiPSC-teratoma 衍生的肌原性祖先的长期体内再生潜力.
- 为了描述这些细胞移植后的移植,扩张和成熟.
- 评估所产生的卫星电池池的稳定性和自我更新能力.
主要方法:
- 从hiPSC衍生的瘤中分离CD82+,ERBB3+,NGFR+细胞.
- 移植到NSG-mdx4Cv小鼠中,以评估体内再生.
- 对移植,肌肉纤维形成 (Dystrophin+),卫星细胞动态 (PAX7+) 和MyHC异型表达的纵向分析.
- 评估冷保存的可行性和植入潜力.
主要成果:
- 移植的细胞成功地植入,扩展并形成Dystrophin+肌肉纤维,这些肌肉纤维生长并长期存在.
- 建立了一个动态的PAX7+卫星细胞群,最初扩大,然后适度下降.
- MyHC异型分析显示了从胚胎到缓慢纤维类型的渐进成熟.
- 低温保存并没有损害这些祖先的移植潜力.
结论:
- 由hiPSC-teratoma衍生的肌原原体具有显著的长期体内再生能力.
- 这些祖先建立了一个稳定的,自我更新的卫星细胞池,并经历渐进的成熟.
- 这些发现突显了瘤衍生的肌源性干细胞用于骨肌肉修复的治疗潜力.
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