在一个人性化的异种移植小鼠模型中,雌激素拯救了受DUX4影响的肌肉再生
Silvia Maiullari1,2, Giada Mele1,2, Patrizia Calandra1
1Institute of Biochemistry and Cell Biology, National Research Council of Italy, Monterotondo, Italy.
Cell death & disease
|July 9, 2025
概括
雌激素激素可以通过抵消DUX4基因,使肌肌衰竭 (FSHD) 有益.
科学领域:
- 肌肉再生和遗传性肌肉病变.
- 内分泌学和荷尔蒙治疗.
- 遗传性疾病和基因表达
背景情况:
- 面骨肌肉发育不良 (FSHD) 是一种常见的遗传肌肉病,临床表现可变.
- 雌激素激素作为FSHD进展中的修饰因子的作用受到争论.
- DUX4基因表达与FSHD病原性有关.
研究的目的:
- 在FSHD模型中研究17β-雌激醇 (E2) 和3β-二醇 (3β-二醇) 对肌肉再生的影响.
- 开发和验证一个人性化的FSHD小鼠模型,用于研究DUX4的致病性和激素敏感性.
- 为了确定荷尔蒙是否可以抵消DUX4诱导的肌肉损伤.
主要方法:
- 通过将人类细胞植入小鼠肌肉中来开发一个人性化的异质细胞FSHD小鼠模型.
- 在小鼠模型中,在人类细胞中诱导DUX4基因的诱导性lentiviral表达.
- 激素治疗 (E2和3β-二醇) 后肌肉结构和功能恢复的评估.
主要成果:
- 人类细胞中的DUX4表达受损了小鼠肌肉的结构和功能恢复.
- 无论是E2和3β-二醇都抵消了DUX4的转录活性.
- 激素治疗挽救了DUX4受损的肌肉性能,对照移植的效果有限.
结论:
- 人性化的异质细胞FSHD小鼠模型有效地回顾了DUX4介导的致病性.
- 雌激素激素在抵消DUX4对肌肉再生的影响方面表现出有益的活性.
- 荷尔蒙因素,特别是雌激素,可能在调节FSHD严重程度方面发挥重要作用.
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