阿斯特拉加勒斯多糖类通过促进NRF2的O-GlcNAcylation来缓解腰椎椎间板
Hao Tan1, Pingsen Xiao1, Cao Fang2
1Department of Orthopedics, Changsha Hospital of Traditional Chinese Medicine (Changsha Eighth Hospital), Changsha, 410100, Hunan, China.
Applied biochemistry and biotechnology
|October 13, 2025
概括
阿斯特拉加勒斯多糖 (APS) 通过增强NRF2的O-GlcNAcylation来减少腰椎间盘 (LDH) 的炎症. 这种机制强调了O-GlcNAcylation作为一个关键因素和LDH的潜在治疗标.
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
- 免疫学 免疫学 免疫学
背景情况:
- 腰椎间盘 (LDH) 涉及炎症和神经压缩.
- 阿斯特拉加勒斯的多糖 (APS) 具有抗炎性质.
- O-GlcNAcylation与炎症和退行性疾病有关.
研究的目的:
- 研究APS在LDH中的抗炎作用的分子机制.
- 探索O-GlcNAcylation在LDH的APS介导治疗中的作用.
- 为了确定参与这个过程的特定分子点.
主要方法:
- 建立了一个LDH大鼠模型和IL-1β刺激的细胞核脉 (NP).
- 通过ELISA对炎症标志物 (IL-6,IL-18,TNF-α) 的评估.
- 利用定量实时PCR,共免疫沉和分子对接来阐明机制.
- 使用流细胞计分析了NP细胞亡.
主要成果:
- 在LDH大鼠和NP细胞中,APS抑制了促炎性细胞因子表达.
- 通过促进O-GlcNAc转移酶 (OGT) 表达,APS增强了O-GlcNAcylation.
- 确定NRF2是OGT介导的O-GlcNAcylation的直接目标.
- 沉默NRF2取消了OGT在IL-1β刺激的NP细胞中的保护作用.
结论:
- 通过增加OGT表达,APS减轻LDH,导致NRF2.2的增强O-GlcNAcylation.
- NRF2的O-GlcNAcylation是LDH的一个关键调节因素.
- 这一途径为治疗腰椎间盘的治疗提供了一种新的治疗策略.
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