在周围神经系统中由甲基引起的感觉神经主导损伤背后的机制
Tsuyoshi Nakano1,2, Eiko Yoshida1,3, Yu Sasaki1
1Faculty of Pharmaceutical Sciences, Tokyo University of Science, 2641 Yamazaki, Noda 278-8510, Chiba, Japan.
International journal of molecular sciences
|November 9, 2024
概括
甲基主要通过诱导背部根结节神经元的亡和亡来损害米纳马塔病中的感觉神经,由巨细胞分泌的TNF-α放大.
科学领域:
- 神经科学是一个神经科学.
- 毒理学 毒理学 毒理学
- 细胞生物学 细胞生物学
背景情况:
- 由于外围神经系统受损,米纳马塔病会引起感觉障碍,主要影响感觉神经.
- 甲基是一种神经毒素,与米纳马塔病有关,其对感觉神经损伤的特定机制需要阐明.
研究的目的:
- 研究甲基对外周神经系统感觉神经的选择性损伤的机制.
- 阐明不同细胞死亡途径和炎症介质在甲基诱导的神经毒性的作用.
主要方法:
- 利用培养的老鼠背根质神经元 (DRG),前角神经元和施万细胞来评估甲基的直接细胞效应.
- 检查了亡,亡和亡途径,包括酶激活,TNF受体信号传递和RIPK3/MLKL酸化.
- 研究了甲基对巨细胞 (RAW264.7细胞) 中TNF-α产生的影响,并利用TNF-α淘汰小鼠评估体内神经症状.
主要成果:
- 甲基诱导了DRG神经元的亡,亡和亡,但不是前角神经元或施万细胞.
- 在DRG神经元中,甲基激活了酶8/3和TNF受体-1/RIP3/MLKL通路.
- 甲基通过NF-κB通路刺激了巨细胞的TNF-α分泌,TNF-α淘汰小鼠显示神经症状减少.
结论:
- 甲基对DRG/感官神经细胞表现出特定的细胞毒性,启动细胞死亡并触发巨细胞的透.
- 一个拟议的途径涉及甲基积累,初始细胞死亡,巨细胞激活,TNF-α分泌,以及随后在感觉神经元中细胞死亡途径的放大.
- 这种机制有助于在米纳马塔病患者中观察到的感觉障碍.
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