图西拉贡通过调节线粒体功能和涉及 Nrf2 激活的 ROS 生产来抑制骨质细胞生成
Xiaoliang Feng1, Zhijuan Liu1, Yuangang Su1
1Guangxi Key Laboratory of Regenerative Medicine, Orthopaedics Trauma and Hand Surgery, the First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China; Collaborative Innovation Centre of Regenerative Medicine and Medical BioResource Development and Application Co-constructed by the Province and Ministry, Guangxi Medical University, Nanning, Guangxi, China.
Biochemical pharmacology
|December 12, 2023
概括
图西拉 (TSG) 通过减少线粒体反应性氧物种 (ROS) 生产来抑制骨质细胞活性和骨损失. 这种天然化合物激活Nrf2,增强抗氧化防御和保护骨质疏松症.
科学领域:
- 生物化学 生物化学
- 细胞生物学 细胞生物学
- 药理学 药理学是指药理学的学科.
背景情况:
- 骨质疏松病原包括过度的骨质细胞 (OC) 活动和来自线粒体的活性氧物种 (ROS) 的增加.
- 图西拉 (TSG) 是一种天然的甲,具有抗炎和抗氧化特性,但其在骨代谢中的作用尚不清楚.
研究的目的:
- 研究TSG对骨质细胞中线粒体ROS产生的影响和机制.
- 通过调节氧化应激来阐明TSG在治疗骨质疏松症方面的潜力.
主要方法:
- 在OCs上进行TSG治疗,并评估分化,骨再吸收和细胞毒性.
- 测量细胞内ROS,线粒体功能和NFATc1转录.
- 研究Nrf2表达及其在TSG影响中的作用.
- 在卵巢切除术后 (OVX) 和脂多糖 (LPS) 诱导的骨损失模型中评估TSG疗效.
主要成果:
- 在没有细胞毒性的情况下,TSG抑制了OC分化和骨再吸收.
- 通过降低线粒体功能和NFATc1.1,TSG减少了RANKL诱导的ROS.
- TSG通过抑制其蛋白质体降解来调节Nrf2的表达.
- Nrf2缺乏逆转了TSG对线粒体活性和ROS的抑制作用.
- TSG减弱的OVX和LPS诱导的骨质损失.
结论:
- 通过调节线粒体功能和ROS生产,TSG具有抗骨吸收效应.
- Nrf2激活是TSG在骨质疏松症治疗潜力的关键机制.
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