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机械紧张的骨细胞衍生外体含有miR-3110-5p和miR-3058-3p,并促进了骨质细胞分化

Yingwen Zhu^1,2, Yanan Li¹, Zhen Cao^1,2

¹Department of Biomedical Engineering, School of Intelligent Medicine and Biotechnology, Guilin Medical University, No. 1 Zhiyuan Road, Lingui District, Guilin, 541199, Guangxi, People's Republic of China.

Biomedical engineering online

|May 5, 2024

概括

机械刺激的骨细胞释放出含有促进骨形成的特定微RNA (miRNA) 的外体. 这些外体,特别是那些具有增加miR-3110-5p和miR-3058-3p的外体,增强了骨质细胞分化.

科学领域:

骨生物学骨生物学
细胞信号传递细胞信号传递
生物材料是一种生物材料.

背景情况:

骨细胞是骨组织中的关键机械传感器.
机械刺激的骨细胞释放出含有microRNAs (miRNAs) 的外体.
这些miRNAs可以影响骨质分化,使其研究至关重要.

研究的目的:

从机械刺激的骨细胞中选和识别外体内的miRNAs.
研究这些特定的miRNAs在调节骨质分化的作用.
为了确定是否机械刺激的骨细胞衍生外体促进骨质细胞分化.

主要方法:

对MLO-Y4骨细胞施加机械拉力应变.
分析前列腺素E2 (PGE2),胰岛素样生长因子-1 (IGF-1) 和氧化合成酶 (NOS) 活性的变化.
使用RT-qPCR对差异表达的miRNA及其向mRNA进行查.
在实验室中评估骨细胞衍生外体对MC3T3-E1骨质细胞分化的影响.

主要成果:

机械应变增加了骨细胞中的PGE2,IGF-1和NOS活性.
在机械应变的骨细胞中确定了14种差异表达的miRNA,其中4种特定的miRNA (miR-1930-3p,miR-3110-5p,miR-3090-3p,miR-3058-3p) 仅在应变的细胞中发现.
机械应激的骨细胞衍生外体促进了骨质母细胞分化,含有高水平的miR-3110-5p和miR-3058-3p.

结论:

机械拉伸应变诱导骨细胞外体中特定的miRNAs参与骨质生成.
来自机械应力骨细胞的外体,富含miR-3110-5p和miR-3058-3p,增强骨质细胞分化.
这突出了通过外体介导的miRNA传递在骨重塑中的机械传导的新机制.

关键词:

外基因组是外基因组的组成部分.机械应变机械应变机械应变这是一个微型RNA.骨质细胞是一种骨质细胞.

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