骨髓中介细胞干细胞衍生外体的冠状腺保护作用在骨关节炎中
Shi Cheng1, Xiangning Xu1, Ren Wang1
1Department of Orthopedic Surgery, Second Affiliated Hospital of Harbin Medical University, 246 Xuefu Road, Nangang District, Harbin City, Heilongjiang Province, 150010, China.
Journal of bioenergetics and biomembranes
|November 27, 2023
概括
骨髓介质干细胞衍生的外体细胞 (BMSC-Exos) 通过抑制状细胞铁亡来缓解骨关节炎 (OA). 他们通过降低METTL3的调节来实现这一目标,这减少了ACSL4的m6A修饰,从而降低了铁亡并防止了OA的进展.
科学领域:
- 生物医学工程 生物医学工程
- 细胞生物学 细胞生物学
- 分子医学是分子医学.
背景情况:
- 冠状细胞铁亡是骨关节炎 (OA) 发展的关键驱动因素.
- 从骨髓介质干细胞 (BMSC-Exos) 衍生出来的外体细胞在各种疾病模型中显示出缓解铁亡的前景.
研究的目的:
- 调查BMSC-Exos是否可以减轻状细胞铁亡及其对OA的影响.
- 阐明潜在的分子机制,重点关注METTL3-m6A-ACSL4轴.
主要方法:
- 建立了一个OA大鼠冠状细胞模型,使用插白素-1β (IL-1β) 刺激.
- 用BMSC-Exos治疗的细胞和评估的活力,铁亡标志物 (ROS,MDA,GSH),细胞死亡 (TUNEL),以及通过RT-qPCR和西部斑块的ACSL4和METTL3水平.
- 利用生物信息学,MeRIP/RT-qPCR和阿基诺胺 D测定来分析METTL3介导的m6A修饰和ACSL4mRNA稳定性. 在外科小鼠OA模型中验证的发现.
主要成果:
- 由IL-1β诱导的状细胞铁亡 (ROS,MDA增加;GSH减少;ACSL4升高) 被BMSC-Exos显著改善.
- 通过降低METTL3的调节,BMSC-Exos减少了冠状细胞铁亡,这种效应因METTL3过度表达而逆转.
- 发现METTL3调节了ACSL4mRNA的m6A修饰,提高了其稳定性和表达. 在大鼠OA模型中使用BMSC-Exos证实了这些保护作用.
结论:
- BMSC-Exos通过通过METTL3-m6A-ACSL4通路减弱冠状细胞铁亡,产生冠状细胞保护作用.
- 这种机制涉及METTL3介导的ACSL4mRNA的m6A修饰,导致铁亡和OA进展的减少.
- BMSC-Exos通过向状细胞铁亡来代表OA的潜在治疗策略.
关键词:
在 ACSL4 中使用.骨髓中介细胞干细胞是骨髓中介细胞的干细胞.外基因组是外基因组的组成部分.在METTL3中,METTL3是METTL3的第一个类型.骨关节炎是一种骨关节炎.m6A 修改的修改更多相关视频
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