TMEM135通过调节线粒体动力学来维持骨质生成和脂肪生成的平衡
Jia Liu1, Xiaogang Bao1, Jian Huang1
1Department of Orthopedic Surgery, Changzheng Hospital, Naval Medical University, Shanghai 200003, PR China.
Metabolism: clinical and experimental
|December 28, 2023
概括
跨膜蛋白135 (TMEM135) 通过控制线粒体动力学来调节骨髓中介质干细胞的分化. TMEM135 缺乏导致骨质疏松症,通过削弱骨质生成和促进脂肪生成.
科学领域:
- 干细胞生物学 干细胞生物学
- 线粒体生物学 线粒体生物学
- 骨生物学 骨生物学
背景情况:
- 骨质疏松症与骨髓中酶干细胞 (BMSC) 分化受损有关.
- 线粒体动力学对BMSC代谢和分化至关重要,但机制尚不清楚.
研究的目的:
- 在BMSC分化过程中调查线粒体动力学.
- 通过线粒体动力学识别调节BMSC分化的基因.
- 确定跨膜蛋白135 (TMEM135) 在骨质稳态和BMSC分化中的作用.
主要方法:
- 检查了线粒体形态和动力学标记在骨质生和脂肪生分化的BMSCs.
- 利用生物信息学来选调节基因.
- 在Tmem135淘汰赛小鼠和实验室中评估了TMEM135缺陷的影响.
- 研究了TMEM135在线粒体动力学和BMSC分化中的机制.
主要成果:
- BMSC分化显示出不同的线粒体形态:骨质生成过程中的裂变和脂肪生成过程中的融合.
- TMEM135调节线粒体动力学,影响脂肪生成-骨质生成平衡.
- TMEM135 缺陷损害了线粒体分裂,在骨质生成过程中破坏了能量代谢,并导致小鼠的骨质疏松现象型.
- TMEM135维持平衡,并促进关键的线粒体裂变蛋白的脱.
结论:
- TMEM135对于通过促进线粒体裂变来引导BMSC分化向骨质生成至关重要.
- TMEM135代表了骨质疏松症治疗的潜在治疗标.
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