葡萄糖皮质激素介导的骨肌肉缩:分子机制和潜在的治疗点
Uttapol Permpoon1, Jiyeong Moon1, Chul Young Kim1
1Department of Pharmacy, Institute of Pharmaceutical Science and Technology, Hanyang University ERICA, Ansan 15588, Gyeonggi-do, Republic of Korea.
International journal of molecular sciences
|August 14, 2025
概括
葡萄糖皮质体 (GCs) 通过激活葡萄糖皮质体受体 (GR) 引起肌肉缩. 了解GR途径为肌肉消耗疾病提供了新的治疗策略.
科学领域:
- 肌肉生理学和内分泌学.
- 肌肉缩的分子机制
- 对代谢障碍的药物发现.
背景情况:
- 骨肌肉缩会降低生活质量,特别是在老年人群和患有慢性疾病的人群中.
- 葡萄糖皮质体 (GCs) 对于恒温至关重要,但长时间暴露会通过葡萄糖皮质体受体 (GR) 诱导肌肉缩.
- 目前针对GC诱导肌肉缩的现有治疗方法的临床疗效有限.
研究的目的:
- 探索参与GC介导的骨肌缩的新兴途径.
- 为了识别超越当前对手的新疗法目标.
- 为了深入了解GR在肌肉代谢中的作用.
主要方法:
- 对骨肌肉中GC信号传递的当前文献的综述.
- 对最近发现的分子通路的分析,包括SIRT6,LSD1,kynurenine通路和IDO-1.
- 检查GR的交换激活和转压机制.
主要成果:
- 通过激活GR,GCs促进肌肉缩,从而抑制蛋白质合成并增强分解.
- 新兴的目标包括抑制AKT/mTORC1信号的GC诱导的Sirtuin 6异型 (SIRT6).
- 氨酸特异性去甲基酶1 (LSD1) 和 kynurenine 途径 (IDO-1) 涉及到 atrogen 转录和肌肉代谢.
结论:
- 肌肉缩的新型治疗策略需要对GR信号复杂性的全面了解.
- 针对SIRT6,LSD1和kynurenine通路等途径可能为治疗GC诱导的肌肉衰竭提供新的途径.
- 为了开发有效的治疗方法,对GR交换激活和转压抑的进一步研究至关重要.
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