牙状环形态发生受自闭症风险基因三重功能在粒细胞中调节
Mengwen Sun1,2, Weizhen Xue3, Hu Meng1
1Peking University Sixth Hospital, Peking University Institute of Mental Health, NHC Key Laboratory of Mental Health (Peking University), National Clinical Research Center for Mental Disorders (Peking University Sixth Hospital), Key laboratory of Mental Health, Chinese Academy of Medical Sciences, Beijing, 100083, China.
Neuroscience bulletin
|June 22, 2024
概括
自闭症风险基因Trio的删除会在小鼠中引起牙状 (DG) 低成形和类似自闭症的行为. 特里奥调节神经前体细胞迁移,这对DG发育至关重要.
科学领域:
- 神经科学是一个神经科学.
- 遗传学 遗传学 是一个
- 发展生物学 发展生物学
背景情况:
- 自闭症谱系障碍 (ASD) 是一种神经发育状况.
- 在ASD中观察到的大脑结构变化,特别是在海马体,在ASD中观察到.
- 这些变化背后的机制以及特异基因 (如Trio) 的作用尚未完全理解.
研究的目的:
- 研究自闭症易感基因Trio在神经发育中的作用.
- 阐明Trio在大脑发育中的功能背后的细胞机制,特别是牙状回形 (DG).
- 在小鼠模型中探索Trio缺陷的行为后果.
主要方法:
- 使用了一个Trio缺陷的小鼠模型.
- 分析了dentate gyrus (DG) 形态和神经前代细胞分布.
- 采用空间转录基因测序来理解不同神经细胞类型中的基因表达.
- 在Trio缺陷小鼠中评估了类似自闭症的行为.
主要成果:
- 三重删除导致出生后的DG低成形,带有异常的suprapyramidal刀片.
- 三元缺陷导致转移后颗粒细胞 (GCs) 的分布受损,以及神经前体迁移缺陷.
- 空间转录学揭示了Trio在刺激神经细胞中的多种作用,特别是调节GC迁移.
- 三缺小小鼠表现出类似自闭症的行为.
结论:
- 三重在牙状回形 (DG) 的产后形态发生中发挥着关键作用.
- 干扰Trio功能会损害神经前体细胞迁移,导致DG结构异常.
- 这些发现为Trio影响大脑发育并导致自闭症类现象的机制提供了细胞洞察力.
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