代谢学分析作为测量神经毒性的工具:一个体外验证
Ibrahim M Alanazi1, Abdullah R Alzahrani1, Torki A Zughaibi2,3
1Department of Pharmacology and Toxicology, Faculty of Medicine, Umm Al-Qura University, Al-Abidiyah, Makkah 21955, Saudi Arabia.
Metabolites
|June 27, 2023
概括
暴露于会导致人类神经元细胞的神经毒性,改变DNA代谢并增加 uracil 水平. 这项研究揭示了.
科学领域:
- 神经科学是一个神经科学.
- 毒理学 毒理学 毒理学
- 分子生物学分子生物学
背景情况:
- 是一种具有工业应用的金属,但其神经毒性作用尚未完全理解.
- 神经细胞,包括星细胞瘤和神经母细胞瘤 (SH-SY5Y) 细胞系,对环境毒素敏感.
- 研究神经毒性的分子机制对于了解它对人类大脑的影响至关重要.
研究的目的:
- 研究对人类星瘤和神经母细胞瘤 (SH-SY5Y) 细胞的神经毒性作用.
- 为了阐明由暴露引起的代谢和转录基因变化.
- 为了确定神经元细胞中受影响的特定分子通路.
主要方法:
- 细胞活力和新陈代谢的评估是使用3 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 的测量方法.
- 基于液态染色体质谱学 (LC-MS) 的代谢学和转录学被用来分析细胞变化.
- 使用定量逆转录聚合酶链反应 (qRT-PCR) 来测量基因表达水平.
主要成果:
- 暴露于导致细胞毒性,并以剂量和时间依赖的方式降低细胞代谢.
- 代谢分析显示了DNA去胺和甲基化途径的改变,尿素水平增加.
- 观察到DNA内尿素的显著增加和DNA修复相关基因 (Mlh1,Sirt2,MeCP2,UNG,TDG) 的表达升高.
结论:
- 暴露于会诱导人类神经元衍生细胞中DNA代谢和修复通路的显著变化.
- 这些发现表明,诱导的DNA中 uracil 积累可能是其神经毒性的关键机制.
- 这项研究提供了关于对人类大脑的分子影响的见解,突出了进一步研究的潜在目标.
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