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CRISPLD2通过通过miR-548I-IL17A轴抑制氧化应激诱导的铁死来减轻椎间盘退化

Yangyang Shi¹, Fudong Li², Tianyi Zhao²

¹Department of Orthopedics & Spine Surgery, Laboratory of Spinal and Spinal Cord Injury Regeneration and Repair, The First Affiliated Hospital of Anhui Medical University, Hefei, P. R. China.

Advanced science (Weinheim, Baden-Wurttemberg, Germany)

|January 9, 2026

概括

含氨酸丰富的分泌蛋白LCCL域含有2 (CRISPLD2) 调节细胞核的细胞平衡. 它的缺乏会促进铁亡和磁盘退化,为腰部疼痛提供治疗点.

科学领域:

生物化学生化学
细胞生物学细胞生物学
分子医学是分子医学.

背景情况:

椎间盘退化 (IVDD) 是慢性腰部疼痛的主要原因.
驱动IVDD的精确分子机制仍然不完全理解.
鉴定核细胞 (NPC) 恒温的关键调节者对于理解IVDD的病原性至关重要.

研究的目的:

调查CRISPLD2 (含氨酸丰富的分泌蛋白LCCL域含2) 在IVDD分子机制中的作用.
阐明CRISPLD2通过哪种途径影响NPC稳态和铁.
评估CRISPLD2作为IVDD和相关疼痛的潜在治疗标.

主要方法:

单细胞转录组分析 (scRNA-seq) 用于识别退行性NPC中的细胞表型.
在NPC和体内模型 (AAV介导) 中的CRISPLD2倒置和过度表达.
评估氧化还原平衡,脂质过氧化,铁积累,铁灭标志物和炎症反应 (IL17A).
在动物模型中评估IVDD严重程度和疼痛敏感性.

主要成果:

退行性NPCs表现出铁代谢和脂质过氧化失调.
克里斯普尔迪2缺乏会破坏NPC氧化还原平衡,增加脂质过氧化物和铁,诱导铁和IVDD.
确定了CRISPLD2-miR-548I-IL17A轴,其中CRISPLD2损失可以调节IL17A,从而放大炎症和氧化应激.
在体内,CRISPLD2敲击会使IVDD和疼痛恶化;CRISPLD2恢复或IL17A抑制可以减轻这些影响.

结论:

在IVDD中,CRISPLD2是氧化应激诱导的铁亡的关键调节者.
针对CRISPLD2-miR-548I-IL17A轴为IVDD提供了一个潜在的治疗策略.
CRISPLD2调制提供了一种新的方法来预防磁盘退化和缓解磁盘产生的疼痛.

关键词:

在CRISPLD2中,我们使用的是CRISPLD2.铁性化 (ferroptosis) 是一种椎间盘退化椎间盘退化这是一个小RNARNA.细胞核细胞核细胞核

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