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O-GlcNAcylation通过线粒体,细胞骨架和内质网膜的形态变化来调节骨质细胞分化

Yao Weng¹, Ziyi Wang², Heriati Sitosari^1,3

¹Department of Oral Morphology, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, Japan.

BioFactors (Oxford, England)

|October 15, 2024

概括

O-链接-N-乙糖氨基化 (O-GlcNAcylation) 通过调节线粒体,细胞骨架和ER形态来影响骨质细胞分化. 敲除Ogt减少了细胞功能和改变了氧代谢,使Ezh2参与了这个过程.

科学领域:

生物化学和分子生物学
细胞生物学细胞生物学
骨生物学骨生物学骨生物学

背景情况:

O-链接-N-乙葡萄糖化 (O-GlcNAcylation) 是一种对细胞过程至关重要的翻译后修饰.
虽然O-GlcNAcylation向线粒体和细胞骨架,但其在骨质生成中的作用尚未完全理解.

研究的目的:

阐明O-GlcNAcylation调节骨质细胞分化的机制.
研究Ogt淘汰对骨质细胞的影响,并确定关键的调节途径.

主要方法:

重新分析RNA-seq数据和文献挖掘.
产生Ogt淘汰 (Ogt-KO) MC3T3-E1骨质细胞.
时间延迟活细胞成像,反应性氧物种/低氧染色,人工智能预测的细胞结构和生物信息学分析.

主要成果:

在Ogt-KO细胞中,骨质母细胞的分化,运动,增殖,线粒体-内质网膜 (Mito-ER) 合,ER体积,核管和氧化代谢的改变都减少了.
人工智能和活细胞成像揭示了减少增殖,改变氧化代谢和Ogt-KO细胞中Mito-ER合之间的相关性.
生物信息学分析表明,Ezh2及其下游目标 (Opa1,Gsk3a,Wnt3a,Hif1a,Hspa9) 参与了O-GlcNAcylation调节的Mito-ER合.

结论:

O-GlcNAcylation通过线粒体,细胞骨架和ER的形态调节影响骨质细胞分化.
Ezh2可能在调解O-GlcNAcylation对Mito-ER合和骨质生成的影响方面发挥关键作用.

关键词:

与O-链接的N-乙葡萄糖胺基化.人工智能的人工智能是人工智能.生物信息学是一种生物信息学.线粒体中的线粒体.骨质母细胞 (osteoblasts) 是一个骨质细胞.

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