YAP1/GPX4轴通过影响骨质母细胞中的铁亡来缓解骨质疏松症
Mingsi Deng1,2, Yong Zhou3, Gengyan Liu4
1Department of Stomatology, The Third Xiangya Hospital of Central South University, 138 Tongzipo Road, Yuelu District, Changsha City, Hunan Province, P.R. China.
Molecular medicine (Cambridge, Mass.)
|October 22, 2025
概括
谷氨过氧化酶4 (GPX4) 抑制铁亡并增强骨质疏松症中的骨形成. YAP1激活GPX4,抑制铁亡并改善骨质细胞功能,以缓解疾病的进展.
科学领域:
- 生物化学 生物化学
- 细胞生物学 细胞生物学
- 整形外科 整形外科 整形外科
背景情况:
- 骨质疏松症 (OP) 的特点是骨疲弱,骨折风险增加.
- 铁灭,一种受调节的细胞死亡形式,已与加速OP进展有关.
- 连接铁亡与OP病变的确切机制仍然不完全理解.
研究的目的:
- 调查谷氨过氧化酶4 (GPX4) 在铁亡相关骨质疏松症中的作用.
- 阐明骨质细胞中YAP1和GPX4之间的调节关系.
- 在OP中确定针对YAP1-GPX4轴的治疗潜力.
主要方法:
- 在临床OP样本和卵巢切除 (OVX) 鼠标模型中分析GPX4表达.
- 评估骨矿物质密度 (BMD),大腿骨形态和骨质母细胞功能 (ALP活动,化).
- 对铁亡标记物 (MDA,GSH,脂质过氧化) 和线粒体超结构的评估.
- 使用ChIP和双化酶记者测试对YAP1-GPX4相互作用的研究.
主要成果:
- 在OP患者中,GPX4表达减少,并且与BMD正相关.
- 在OVX小鼠中,GPX4缺乏会加剧骨质损失和增加铁亡.
- 过度表达GPX4抑制了铁亡并促进了骨质母细胞的骨质生成.
- YAP1通过转录激活了GPX4,抑制了铁亡并增强了骨质细胞分化.
结论:
- 在骨质疏松症中,GPX4通过抑制铁灭菌起着保护作用.
- YAP1积极调节GPX4的表达,从而减轻铁亡并促进骨质生成.
- 向YAP1-GPX4通路代表了对骨质疏松症的潜在治疗策略.
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