纤维细胞生长因子13是一种微管稳定蛋白,调节神经元偏振和迁移
Qing-Feng Wu1, Liu Yang, Shuai Li
1Institute of Neuroscience and State Key Laboratory of Neuroscience, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200031, China.
Cell
|June 26, 2012
概括
纤维细胞生长因子13 (FGF13) 稳定微管,对大脑发育和神经元迁移至关重要. 失去FGF13会导致与智力障碍相关的缺陷,类似于与X染色体相关的智力障碍.
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
- 发展生物学 发展生物学
背景情况:
- 分泌性纤维细胞生长因子 (FGFs) 调节神经早期发育.
- FGF13是一种非分泌的FGF,与X染色体相关的精神障碍 (XLMR) 有关.
- FGF13在神经发育中的确切功能尚不清楚.
研究的目的:
- 阐明神经发育过程中FGF13的细胞内功能.
- 研究FGF13在神经元迁移和过程形成中的作用.
- 为了确定FGF13缺乏和认知缺陷之间的联系.
主要方法:
- 研究了FGF13的细胞内定位和与微管的相互作用.
- 评估了FGF13损失对神经元偏振,轴突分支和迁移的影响.
- 在小鼠模型中利用FGF13的遗传删除来研究新皮质和海马体发育.
- 在FGF13缺乏的小鼠中评估学习和记忆.
主要成果:
- FGF13在细胞内起作用,稳定微管,促进轴突/过程的发展.
- 富含轴突生长的FGF13与管素直接相互作用.
- 失去FGF13会导致神经元偏振受损和异常的轴突分支.
- FGF13的遗传删除会导致新皮质和海马体中显著的神经元迁移缺陷.
- 缺乏FGF13的小鼠在学习和记忆方面表现出缺陷.
结论:
- FGF13是一种关键的细胞内微管稳定蛋白质,对大脑皮层发育至关重要.
- 在神经元迁移和过程形成中,FGF13的作用对于正常的大脑结构至关重要.
- 在XLMR中观察到的认知障碍的基础是FGF13缺乏,突出其临床相关性.
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