上调 miR-181b 通过抑制 SLC7A1111 的作用,促进骨关节性肌肉细胞中的铁亡
Dexin Wang1, Yu Fang1, Liang Lin1
1Department of Orthopaedics, Haishu Branch, Ningbo First Hospital, Ningbo, 315153, China.
BMC musculoskeletal disorders
|November 6, 2023
概括
升高的miR-181b水平有助于骨关节炎 (OA) 通过促进状细胞铁亡,一个涉及细胞死亡的过程. 这种微RNA针对SLC7A11,加剧了OA的进展.
科学领域:
- 生物化学 生物化学
- 分子生物学分子生物学
- 细胞生物学 细胞生物学
背景情况:
- 骨关节炎 (OA) 是一种常见的退行性关节疾病,具有复杂的病理机制.
- 微RNA和铁死在OA病变发生中的作用仍然不完全理解.
研究的目的:
- 为了研究在OA发育过程中冠状腺细胞中增加miR-181b表达和铁亡之间的关联.
- 阐明miR-181b影响OA进展的分子机制.
主要方法:
- 使用埃拉斯建立了OA细胞模型和由单酸诱导的老鼠OA模型.
- 利用铁素-1 (Fer),生物信息学和双化酶记者试验来评估miR-181b的功能.
- 分析了与铁亡相关的蛋白质的表达,包括溶解物载体家族7成员11 (SLC7A11) 和谷甲氧化酶4 (GPX4).
主要成果:
- 铁素-1 (铁) 治疗逆转了埃拉斯诱导的慢细胞损伤,增加了原蛋白质,并抑制了铁和氧化应激.
- 发现miR-181b在OA胆固醇细胞中显著上调.
- 抑制miR-181b增加了SLC7A11和GPX4的表达,抑制了铁亡. 相反,SLC7A11的敲击抵消了miR-181b抑制的保护作用.
- 在体内,miR-181b通过抑制SLC7A11和促进铁亡,加剧了OA的进展.
结论:
- 异常上调 miR-181b 在通过向 SLC7A11 在骨关节炎中调解状细胞铁亡中起着至关重要的作用.
- 针对miR-181b/SLC7A11通路为OA提供了一个潜在的治疗策略.
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