骨髓衍生的外体促进炎症和骨质细胞分化在高周转率的脏骨质疏松症
Rao Fu1, Kexin Meng1, Rui Zhang1
1Department of Nephrology, The Second Affiliated Hospital of Harbin Medical University, Harbin, China.
Renal failure
|October 23, 2023
概括
慢性病患者的骨髓外基因组通过改变microRNA含量来促进炎症和骨质损失,从而导致性骨质疏松症.
科学领域:
- 腎臟病學 (nephrology) 是一種醫學專業.
- 骨生物学 骨生物学 骨生物学
- 细胞生物学 细胞生物学
背景情况:
- 脏骨质疏松症 (ROD) 是慢性脏病 (CKD) 患者的骨代谢障碍.
- 炎症与ROD中的骨损失有关,但机制尚不清楚.
- 骨髓外体 (BM-Exos) 在高周转率ROD病原体中的作用需要研究.
研究的目的:
- 调查骨髓外体 (BM-Exos) 在高周转率骨质疏松症 (ROD) 病变发生过程中的作用.
- 探索ROD衍生的BM-Exos对炎症和骨质细胞分化的影响.
- 为了确定参与这些过程的ROD-Exos中关键的microRNAs.
主要方法:
- 氨酸诱导的ROD大鼠模型用于评估骨质量,骨质细胞数量和BM超细胞因子.
- 来自ROD大鼠的BM-Exos对其对炎症基因表达和骨髓衍生巨细胞 (BMM) 的骨质细胞分化的影响进行了测试.
- 进行了外体miRNA测序和miRNA-mRNA通路网络构建.
主要成果:
- ROD老鼠表现出骨质细胞增加,骨质量减少,以及骨髓中的炎症激活.
- 来自ROD的BM-Exos激活了BMM中的NF-κB信号,促进了促炎性细胞因子的释放和骨质细胞分化.
- 在ROD-Exos中确定了24种差异表达的miRNA,其中rno-miR-9a-5p,rno-miR-133a-3p,rno-miR-30c-5p,rno-miR-206-3p和rno-miR-17-5p与炎症和骨质细胞形成有关. miR-9a-5p被证实是上调的.
结论:
- 在ROD中的骨髓外基因组改变了它们的miRNA载荷.
- 这些改变的BM-Exos在BMM中促进炎症和骨质细胞分化.
- 这种机制有助于高周转率ROD的病变发生.
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