NMDA受体表达在发育中的寡类细胞过程和中介性损伤中
Michael G Salter1, Robert Fern
1Department of Cell Physiology and Pharmacology, University of Leicester, Leicester LE1 9HN, UK.
Nature
|December 24, 2005
概括
在寡头细胞过程中的N-甲基-D-酸盐 (NMDA) 受体有助于在缺血期间的白质损伤. 阻断这些NMDA受体可以保护这些关键细胞,为大脑疾病提供新的治疗点.
科学领域:
- 神经科学是一个神经科学.
- 细胞生物学 细胞生物学
- 神经生物学 神经生物学 神经生物学
背景情况:
- 氧基细胞过程对髓化至关重要,它们的损伤与大脑疾病有关.
- 之前的研究忽视了N-甲基-D-酸盐 (NMDA) 受体在寡头细胞损伤中的作用,因为专注于细胞体.
研究的目的:
- 调查NMDA受体子单元在寡头细胞过程中的存在和作用.
- 为了确定NMDA受体激活在缺血性条件下对寡头细胞过程的影响.
主要方法:
- 在小鼠白质中检查NMDA受体子单元表达,使用技术,如在CNP-GFP小鼠中标记绿色光蛋白 (GFP).
- 模拟缺血,观察NMDA受体激活对寡细胞过程的影响.
- 区分了NMDA和AMPA/甲酸盐受体在寡头细胞内的局部.
主要成果:
- 虽然NMDA受体子单元 (NR1,NR2A-D,NR3A) 在寡细胞过程中表达,但NR3B却没有表达.
- 在模拟性缺血期间NMDA受体的激活导致了快速的,依赖于的脱离和分解的寡腺细胞过程.
- AMPA/甲酸盐受体局部化到体内,阻断它们保护细胞体,而阻断NMDA受体保护过程.
结论:
- 在寡头细胞过程中存在NMDA受体解释了它们对损伤的脆弱性.
- 在寡头细胞过程中的NMDA受体代表了急性脑损伤和相关疾病的重要新药开发目标.
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