在希尔施普隆小鼠Sox10中单细胞选意味着Hoxa6在肠神经元血统分配中
bioRxiv : the preprint server for biology
|September 30, 2024
概括
索克斯10缺乏症通过改变神经元轨迹和影响霍克斯基因表达来改变肠道神经系统的发育. 这项研究揭示了Sox10的存在.
科学领域:
- 发育生物学是发展生物学.
- 神经科学是一个神经科学.
- 遗传学 是一个遗传学.
背景情况:
- 肠道神经系统 (ENS) 的发展对胃肠道运动至关重要.
- 索克斯10的缺乏会导致角膜炎,模拟赫斯普隆病,并改变肠道神经元比率.
- 索克斯10对肠道神经元亚型比率的确切影响尚不清楚.
研究的目的:
- 研究Sox10缺乏对ENS前代和早期分化神经元的影响.
- 了解Sox10如何影响肠道神经元亚型的多样化.
主要方法:
- 单细胞RNA测序 (scRNA-seq) 在ENS原生细胞和来自Sox10突变和野生类型 littermates的发育神经元上进行.
- 分析了scRNA-seq数据,以确定细胞类型标记物,基因表达变化,细胞命运轨迹和基因调控网络活动.
- 杂交连锁反应 (HCR) 用于验证scRNA-seq发现.
主要成果:
- scRNA-seq通过两个过渡途与活跃的霍克斯基因调节网络揭示了来自祖先的三个神经元系.
- Sox10突变体表现出一种新的原始细胞群,减少过渡细胞和改变细胞分布.
- 在受Sox10缺陷影响的神经元系中,Hoxa6表达发生了改变.
结论:
- Sox10突变通过在早期ENS谱系分离期间修改神经元轨迹来改变肠道神经元类型.
- 在Sox10突变体中观察到神经性转录因子的减少,包括多个Hox基因.
- 这项研究涉及Hox基因在肠道神经元的血统多样化.
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