在椎间盘退化期间,miR-155-5p在炎症和机械负荷中的作用
Petra Cazzanelli1, Mikkael Lamoca1, Johannes Hasler1
1Department of Biomedical Engineering, Rochester Institute of Technology, Rochester, NY, USA.
Cell communication and signaling : CCS
|August 27, 2024
概括
微RNA-155-5p通过增加炎症和代谢变化促进椎间盘退化. 抑制miR-155-5p为磁盘退化和相关的腰部疼痛提供了潜在的治疗策略.
科学领域:
- 生物医学科学 生物医学科学
- 分子生物学分子生物学
- 再生医学是一种再生医学.
背景情况:
- 椎间盘 (IVD) 退化涉及细胞失调,炎症增加和细胞外基质 (ECM) 退化.
- 微RNAs (miRNAs) 是关键的转录后调节者;miR-155-5p与炎症和骨关节炎等疾病有关.
- 这项研究调查了miR-155-5p在IVD退化中的作用,重点关注炎症和机械感知.
研究的目的:
- 为了阐明miR-155-5p在椎间盘 (IVD) 退化中的作用.
- 研究miR-155-5p对IVD细胞内的炎症和机械感知通路的影响.
- 探索在IVD退化中调节miR-155-5p的治疗潜力.
主要方法:
- 来自退化的IVD的人类核脉 (NP) 和环纤维 (AF) 细胞被miR-155-5p模仿剂或抑制剂感染.
- 感染过的细胞受到炎症条件或机械负荷的影响.
- 分析了细胞因子分泌,基因表达和信号通路激活 (MAPK).
主要成果:
- 在机械应力和炎症下,miR-155-5p上调分别增加了AF细胞中IL-8和IL-6的分泌.
- 在循环拉伸过程中,miR-155-5p在AF细胞中模仿增强的大脑衍生神经营养因子 (BDNF).
- 在NP细胞中,miR-155-5p激活了MAPK通路;抑制增加了IL-10和TIMP-4.
结论:
- miR-155-5p通过在机械负荷下促进AF细胞的炎症和代谢变化,加剧IVD退化.
- 向miR-155-5p为管理IVD退化和腰部疼痛提供了一个有希望的治疗途径.
- 调节miR-155-5p会影响关键的炎症和信号通路,这些通路与磁盘健康有关.
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