在小鼠中,切术诱导的宫外骨化需要TNFα依赖的mTOR活性
Yu Kushima1,2, Yuiko Sato1,3, Tami Kobayashi1,3
1Department of Orthopedic Surgery, Keio University School of Medicine, 35 Shinano-machi, Shinjuku-ku, Tokyo, 160-8582, Japan.
Journal of bone and mineral metabolism
|June 1, 2023
概括
创伤引起的肌外宫骨化,是一种痛苦的疾病,可以通过向TNFα-mTOR通路来预防. 这项研究表明,抑制mTOR或TNFα显著降低了小鼠阿基里斯肌的宫外骨化.
科学领域:
- 肌肉骨生物学 肌肉骨生物学
- 炎症研究的研究.
- 生物医学工程 生物医学工程
背景情况:
- 肌肉和肌的宫外骨化会引起疼痛,限制日常活动.
- 宫外骨化背后的机制在很大程度上是未知的.
- 目前的治疗方法对创伤引起的子宫外骨化缺乏有效性.
研究的目的:
- 调查肌中创伤诱导的子宫外骨化机制.
- 确定潜在的治疗点,以防止子宫外骨化.
- 评估TNFα-mTOR途径在宫外骨化中的作用.
主要方法:
- 在小鼠身上进行了阿基里斯肌切除术.
- 小鼠接受了mTOR抑制剂 (拉帕米),基因组胺 (西米提丁) 或抗炎药物 (塞莱科西布,洛克索) 的治疗.
- 免疫组织化学和3D微型CT被用于评估子宫外骨化和分子标记物 (mTOR,TNFα,F4/80).
主要成果:
- 宫外骨化发生在所有野生类型小鼠的切部位.
- 通过准mTOR激活,拉帕米辛显著抑制了子宫外骨化.
- 在解剖部位积累了TNFα表达性巨细胞,TNFα缺乏抑制了骨化.
- 抗炎药物赛莱科西布和洛克索也抑制了宫外骨化.
结论:
- TNFα-mTOR信号轴在创伤引起的子宫外骨化中发挥着关键作用.
- 准TNFα-mTOR通路提供了一种潜在的治疗策略,可以预防子宫外骨化.
- 根据这些发现,需要进一步的研究来探索基于这些发现的治疗干预措施.
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