抑制REV-ERBα表达可以防止机械过载引起的软骨时钟干扰和骨关节炎进展
Xiaojie Xu1,2, Dong Wang2, Bowei Ni2
1College of Life Sciences, Northwest University, Xi'an, 710069, China.
Journal of orthopaedic translation
|July 3, 2025
概括
异常的机械负荷扰乱了软骨的昼夜钟,增加了REV-ERBα,并导致骨关节炎 (OA). 抑制REV-ERBα或MAPK-MYC通路可以通过恢复昼夜节律来治疗OA.
科学领域:
- 时间生物学 时间生物学
- 整形外科 整形外科 整形外科
- 分子生物学分子生物学
背景情况:
- 关节软骨的平衡依赖于昼夜时钟,受到机械负荷的影响.
- 骨关节炎 (OA) 与异常的机械负荷有关,这可能会破坏软骨时钟.
- 这项研究研究了机械负荷在破坏软骨昼夜时钟中的作用及其对OA的贡献.
研究的目的:
- 为了确定异常的机械负荷是否会扰乱关节软骨的昼夜钟.
- 确定将机械负荷,昼夜干扰和OA联系在一起的分子机制.
- 探索针对骨时钟治疗OA的治疗策略.
主要方法:
- 在PER2Luc记者小鼠中利用了体内机械负荷和体外生物发光记录.
- 在静态压缩下对细胞进行RNA测序,以识别核心时钟分子,如REV-ERBα.
- 使用siRNA和AAV-shRNA来击败REV-ERBα和药理抑制剂 (SR8278,U0126,SB203580) 以针对特定的途径.
主要成果:
- 过度的机械负荷扰乱了关节软骨的昼夜节律.
- 在OA软骨中REV-ERBα的表达增加;它的敲击改善了状细胞功能障碍.
- 抑制MAPK-MYC途径减弱了REV-ERBα上调和昼夜干扰.
- 对REV-ERBα的药理抑制恢复了昼夜节律,并减轻了OA的进展.
结论:
- REV-ERBα对于将机械过载引起的昼夜干扰与OA病理联系起来至关重要.
- 在机械压力下了解受损昼夜节律机制为OA提供了潜在的治疗途径.
- 向REV-ERBα或MAPK-MYC通路为OA治疗提供了一个有前途的治疗策略.
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