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通过限制线粒体的氧化酸化和反应性氧物种的产生,PRODH保护了人类的天真多能性

Cheng Chen^1,2, Qianyu Liu³, Wenjie Chen⁴

¹Shaoxing People's Hospital, Shaoxing Hospital, Zhejiang University School of Medicine, Shaoxing, Zhejiang, 312000, China.

|March 14, 2024

概括

氨酸脱酶 (PRODH) 在天真的人类胚胎干细胞 (hESC) 中被上调,限制线粒体呼吸和活性氧物种 (ROS),以保持多能性. 它的抑制会触发DNA损伤和亡,突出显示PRODH.

科学领域:

干细胞生物学干细胞生物学
线粒体的新陈代谢
细胞信号传输细胞信号传输

背景情况:

纯粹的人类胚胎干细胞 (hESCs) 使用糖解和氧化酸化,但它们的线粒体调节仍然不清楚.
线粒体调节器对于维持纯粹的hESCs独特的代谢状态和多能性至关重要.
了解这些监管机构是控制hESC差异化和应用的关键.

研究的目的:

调查氨酸脱酶 (PRODH) 在调节原始hESCs中的线粒体功能中的作用.
阐明 PRODH 对线粒体氧化酸化 (mtOXPHOS) 和反应性氧物种 (ROS) 生产的影响.
确定 PRODH 如何影响天真 hESC 的多能性和增殖.

主要方法:

在原始与原始化hESC中,PRODH表达的定量分析.
在天真的hESC中进行基因操纵 (PRODH淘汰).
评估mtOXPHOS,ROS产量,自,DNA损伤和亡.
用MitoQ治疗,一种针对线粒体的抗氧化剂,以评估救援效应.

主要成果:

在原始的hESC中,PRODH显著上调,由降低的c-Myc表达引起.
降低PRODH会增加mtOXPHOS和ROS的产生,导致自,DNA损伤和亡.
在PRODH-knockdown hESC中,MitoQ治疗可以挽救多能性和增殖.
通过PRODH knockdown,可以减少线粒体电子运输链蛋白质的降解.

结论:

在原始的hESC中,PRODH在限制mtOXPHOS和ROS生产方面发挥着至关重要的作用.
通过防止过度的ROS诱导的细胞损伤,PRODH保护了天真的多能性.
针对PRODH或管理ROS水平可能是控制hESC命运和功能的策略.

关键词:

电子运输链复杂的电子运输链.人类天真的多能性多能性.这就是 PRODHDH PRODH.反应性氧物种的反应性氧物种.这就是mtoxphos.

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