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赛尔图因3激活的超氧化物脱酶2通过降低反应性氧物种的调节,在体外和体内调节化物诱导的骨质母细胞分化

Liu Yang¹, Qiao Li¹, Sa Wang¹

¹Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, 150081, Heilongjiang Province, China.

Archives of toxicology

|July 16, 2024

概括

这项研究揭示了过度化物摄入如何影响骨健康. 它表明SIRT3/SOD2信号减少了反应性氧物种,促进骨质细胞在骨化中分化.

科学领域:

生物化学生化学
细胞生物学细胞生物学
骨的新陈代谢骨的新陈代谢

背景情况:

骨化是一种骨疾病,由慢性过量摄入化物引起.
异常的骨质细胞分化是骨化症进展的关键.
了解化物对骨分化的影响对于治疗至关重要.

研究的目的:

为了研究化物介导的骨质母细胞分化的机制.
探索活性氧物种 (ROS) 和相关酶在化物诱导的骨变化中的作用.

主要方法:

通过在饮用水中暴露于50mg/L化物,建立了一种小鼠化模型.
使用MG-63和Saos-2细胞进行体外实验,使用4mg/L化.
测量了骨质生成指标,ROS/mtROS水平,以及RUNX2,SOD2和SIRT3.3的表达.
抑制SOD2或SIRT3以评估它们在化物影响中的作用.

主要成果:

化物暴露增加了老鼠骨质母细胞中RUNX2,SOD2和SIRT3的表达.
化促进了骨质生成,并在MG-63和Saos-2细胞中增加了SOD2/SIRT3.
化物意外降低了ROS和线粒体ROS (mtROS) 水平.
抑制SOD2或SIRT3逆转了化物诱导的ROS/mtROS降低和骨质促进.

结论:

骨化症涉及化物促进的骨质母细胞分化.
在这个过程中,SIRT3/SOD2通路起着至关重要的作用.
化物通过SIRT3/SOD2通路下调ROS促进骨质细胞分化.

关键词:

化物化物化物骨质母细胞是骨质母细胞.反应性氧物种 (ROS) 是一种反应性氧物种.塞尔图因3 (SIRT3) 是一个超氧化物脱酶2 (SOD2) 的使用.

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