葡萄糖耗尽会降低细胞活力,而不会引发生理核的退行性变化
Mathilde Padrona1, Manon Maroquenne1, Hanane El-Hafci1
1Université Paris Cité, CNRS, INSERM, ENVA, B3OA, Paris, France.
概括
葡萄糖耗尽显著降低核脉 (NP) 细胞活力,并增加退化椎间盘的亡. 其他因素也可能在退化过程中影响NP细胞表型.
科学领域:
- 生物医学科学 生物医学科学
- 细胞生物学 细胞生物学
- 生物化学 生物化学
背景情况:
- 椎间盘退化 (IVDD) 的病因尚不清楚,但涉及到无血管核脉 (NP) 中的营养缺乏.
- 严重的缺氧对NP细胞的影响很小,但在退化的磁盘 (0.2-1毫米) 中葡萄糖耗尽的影响仍然不确定.
研究的目的:
- 为了确定"退化" (0.3毫米) 葡萄糖水平对牛NP爆炸性恒温的影响,使用实体模型.
- 评估葡萄糖耗尽对NP细胞活力,细胞亡,表型,新陈代谢,衰老,细胞外矩阵 (ECM) 周转和炎症介质生产的影响.
主要方法:
- 使用一种模拟磁盘微环境的牛NP爆料模型.
- 通过光染色,RT-qPCR, (免疫) 组织学,ELISA和生物化学/酶分析来评估NP细胞平衡.
主要成果:
- 与0.3毫米葡萄糖相比,暴露于0.3毫米葡萄糖显著降低了NP细胞活力,并增加了细胞亡.
- 亚格格兰和原II的基因表达被下调.
- NP细胞表型,衰老,矩阵催化和炎症介质的产生受到葡萄糖枯竭的最小影响.
结论:
- 葡萄糖耗尽是减少在磁盘退化期间NP细胞活力的一个关键因素.
- 其他微环境因素可能有助于在退化中观察到的NP细胞表型转变.
- 这些发现有助于在细胞-分子层面上更好地理解IVDD,有助于开发治疗策略.
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