FSTL1通过TLR4/NF-κB通路加速细胞衰老和椎间盘退化
Xu Yan1,2, Jing-Yu Ding1,2, Ren-Jie Zhang1,2
1Department of Orthopedics and Spine Surgery, The First Affiliated Hospital of Anhui Medical University, 218 Jixi Road, Hefei, 230022, Anhui, China.
Inflammation
|February 5, 2024
概括
类似于folistatin的1 (FSTL1) 通过促进衰老和炎症,驱动核脉细胞退化和椎间盘退化 (IVDD). 沉默FSTL1可以缓解IVDD的进展,这表明FSTL1是治疗腰部疼痛的治疗点.
科学领域:
- 生物化学 生化学
- 细胞生物学 细胞生物学
- 整形外科 整形外科 整形外科
背景情况:
- 椎间盘退化 (IVDD) 是腰部疼痛 (LBP) 的主要原因之一.
- 炎症因素是IVDD病变发生的关键驱动因素.
- 福利斯塔丁类1 (FSTL1) 在核细胞 (NPC) 退化中的作用以前尚不清楚.
研究的目的:
- 调查FSTL1在IVDD病变发生中的作用.
- 探索FSTL1诱导的NPC退化的潜在机制.
- 评估FSTL1作为IVDD的潜在治疗点.
主要方法:
- 使用了诱导酸性酶的NPC退化和子穿孔IVDD模型.
- 在IVDD组织和细胞中评估了FSTL1表达水平.
- 研究了复合人类FSTL1 (rh-FSTL1) 和FSTL1沉默 (siRNA) 对NPC衰老和细胞外矩阵 (ECM) 代谢的影响.
- 研究了托尔样受体4/核因子-κB (TLR4/NF-κB) 途径的参与.
主要成果:
- 在IVDD患者的NP组织和实验IVDD模型中,FSTL1表达显著上调.
- rh-FSTL1诱导了NPC衰老,增加了衰老标记物 (p16,p21,SA-β-gal),促进了SASP,降低了ECM蛋白质的调节.
- 沉默FSTL1可以改善NPC衰老和炎症.
- 这条TLR4/NF-κB通路与FSTL1-介导的NPC衰老有关.
- 在子中,FSTL1 siRNA治疗显著抑制了IVDD的发展.
结论:
- FSTL1在促进NPC衰老和炎症方面发挥着关键作用,有助于IVDD.
- FSTL1通过TLR4/NF-κB通路调节NPC衰老.
- 准FSTL1为缓解炎症诱导的IVDD和LBP提供了一个有希望的治疗策略.
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