可斯塔丁M信号驱动与癌症相关的骨肌肉损耗
Aylin Domaniku-Waraich1, Samet Agca1, Batu Toledo1
1Department of Molecular Biology and Genetics, Koc University, Istanbul 34450, Turkiye.
Cell reports. Medicine
|April 3, 2024
概括
在慢性疾病中, Kostatin M (OSM) 驱动肌肉消耗. 阻断OSM/OSMR通路可保持肌肉质量和功能,为肌肉缩提供一种潜在的治疗策略.
科学领域:
- 生物化学 生物化学
- 分子生物学分子生物学
- 生理学 生理学 生理学
背景情况:
- 渐进的肌肉衰弱和损失是癌症和肌肉发育不良等慢性疾病的标志.
- 癌症相关的缓解症显著损害生活质量和生存,由于剧烈的体重减轻和疲劳.
- 目前的抗生素疗法在预防癌症患者肌肉消耗方面无效.
研究的目的:
- 调查哥斯塔丁M (OSM) 作为强烈诱导肌肉缩的作用.
- 阐明OSM引发肌肉衰竭的分子机制.
- 评估针对肌肉消耗的OSM/OSMR途径的治疗潜力.
主要方法:
- 通过JAK/STAT3通路利用初级髓管来证明OSM诱导的细胞缩.
- 采用RNA测序来识别与肌肉缩相关的OSM调节基因,包括Atrogin1.
- 产生了具有OSM过度表达和OSM受体 (OSMR) 肌肉特异性缺失的小鼠模型,以评估体内效应.
主要成果:
- 在实验室和体内,确定哥M (OSM) 是肌肉缩的强有力的诱导剂.
- OSM激活了JAK/STAT3通路,导致像Atrogin1.1这样的缩相关基因的上调.
- 过度表达OSM在小鼠中导致肌肉消耗,而OSMR删除或OSM中和则防止了瘤携带小鼠的肌肉损失.
结论:
- 激活的OSM/OSMR信号是慢性疾病中肌肉缩的关键驱动因素.
- 准OSM/OSMR途径是一个有前途的治疗策略,用于预防和治疗肌肉消耗.
- 这项研究为旨在维护肌肉质量和功能的干预措施开辟了新的途径.
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