骨细胞中的铁亡作为保护绝经后骨质疏松症的目标
Zengxin Jiang1,2, Guobin Qi2, Xuecheng He1,2
1Department of Orthopaedics, Shanghai Jiaotong University Affiliated Sixth People's Hospital, No. 600 Yishan Road, Shanghai, 200233, China.
Advanced science (Weinheim, Baden-Wurttemberg, Germany)
|January 17, 2024
概括
雌激素的损失会引发铁的积累和骨细胞细胞死亡 (骨质亡),导致绝经后骨质疏松症的恶化. 向铁亡可能有助于恢复骨健康.
科学领域:
- 细胞生物学 细胞生物学
- 骨的新陈代谢 骨的新陈代谢
- 病理生理学 病理生理学
背景情况:
- 铁,一种依赖于铁的调节细胞死亡形式,在各种疾病中起作用.
- 雌激素缺乏是绝经后骨质疏松症 (PMOP) 的关键因素,影响骨矿物质密度.
- 铁代谢中断与PMOP的病变产生有关.
研究的目的:
- 为了研究铁死在雌激素戒断期间骨细胞中的作用.
- 阐明将骨细胞性铁亡与PMOP发展联系在一起的机制.
- 探索与铁死相关的PMOP的潜在治疗点.
主要方法:
- 通过体内和体外的雌激素退出来诱导骨细胞中的铁亡.
- 使用谷氨过氧化酶4 (GPX4) 淘汰卵巢切除的小鼠模型.
- 使用直接的骨细胞/骨质细胞共同培养系统.
- 分析核因子红色素衍生2-相关因子-2 (Nrf2) 信号通路及其下游目标.
主要成果:
- 雌激素的取消导致骨细胞中铁的积累和铁的增加,从而减少骨矿物质密度.
- 骨细胞铁致死促进骨质细胞形成,有助于PMOP的发展.
- Nrf2信号通路在骨细胞铁中至关重要,并通过Dnmt3a介导的DNA甲基化调节RANKL的表达.
结论:
- 骨质细胞铁是导致绝经后骨质疏松症的重要病原体.
- 向骨细胞铁和Nrf2/Dnmt3a/RANKL轴为PMOP提供了一个潜在的治疗策略.
- 调节铁亡提供了一种新的方法来调节骨质稳定.
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