来自纤维增生原始细胞 (FAPs) 的瘦素调节大脑肌肉不使用缩和宫外脂肪积累
Song Xinyi1,2, Li Tingting1, Liu Xiaoyu1
1College & Hospital of Stomatology, Anhui Medical University, Anhui Province Key Laboratory of Oral Diseases Research, Hefei, China.
Journal of cachexia, sarcopenia and muscle
|November 27, 2025
概括
瘦素是由纤维基原始细胞 (FAPs) 分泌的,它可以对抗脂肪积累在不再使用的缩中. 减少FAP衍生的瘦素加剧肌肉退化,突出FAPs.
科学领域:
- 肌肉生理学和肌肉再生
- 细胞代谢和信号传递
- 肌肉缩的生物标志物
背景情况:
- 消耗性缩导致肌肉过度积累脂肪,损害功能和进展.
- 瘦素是骨肌肉脂肪代谢的关键调节剂.
- 肌缩会带来审美和功能上的挑战.
研究的目的:
- 为了研究瘦素在按摩器肌肉中所扮演的角色和机制,不使用肌肉缩.
- 为了识别masseter肌肉中瘦素的局部来源.
主要方法:
- 建立了一个小鼠模型的masseter肌肉不使用缩.
- 给予外源性瘦素和尼洛丁尼 (以诱导FAP的亡).
- 利用转录组测序和体外验证.
主要成果:
- 消耗性缩显著增加肌肉甘油三和MuRF-1表达.
- 丁注射减少了脂质积累和缩.
- 莱普丁上调过酶增殖器激活受体α (PPARα),对脂质代谢至关重要.
- 纤维基原始细胞 (FAPs) 被确定为白的局部来源.
- 尼洛丁尼诱导的FAP亡恶化了肌肉脂质的积累和缩.
结论:
- 在不再使用的FAP中减少了从FAP中的瘦素分泌,缩触发了脂质积累,加剧了肌肉退化.
- 通过叶黄素介导的机制,FAPs在维持马塞特肌肉平衡中发挥着至关重要的作用.
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