器官内在神经系统的不同发育蓝图
bioRxiv : the preprint server for biology
|January 3, 2024
概括
内心神经系统 (ICNS) 和肠道神经系统 (ENS) 的专业化不同. ICNS使用特定的基因和祖先状态来组织心脏,与肠道中的移动ENS不同.
科学领域:
- 神经科学是一个神经科学.
- 发展生物学 发展生物学
- 基因组学就是基因组学.
背景情况:
- 器官内在神经元对于身体-大脑沟通和器官平衡至关重要.
- 了解这些神经元的专业化机制至关重要,但在很大程度上是未知的.
- 内心神经系统 (ICNS) 对于心脏功能至关重要,但特征不佳.
研究的目的:
- 调查肠道神经系统 (ENS) 和ICNS的器官特异性组织背后的差异化策略.
- 揭示驱动不同器官内神经元专业化的分子和细胞机制.
主要方法:
- 高分辨率的整体胚胎成像
- 单细胞基因组学和空间转录组学
- 蛋白质组学和生物信息学分析
- 跨器官共同培养实验 跨器官共同培养实验
主要成果:
- 该ICNS利用特定的细胞外基因组 (ECM) 基因和专门的祖先状态在心脏内部组织.
- 与胃肠道中的移动ENS不同,ICNS在心脏前庭上采用"珠子上的项链"结构.
- 与心脏细胞共同培养的ENS前体采用了ICNS类特征,包括心脏匹配的ECM基因表达.
- 尽管基因相似,但ICNS和ENS前体遵循不同的分化路径,受其宿主器官的影响.
结论:
- 主体器官显著影响器官内在神经元的分化途径和专业化.
- 在暴露于心脏微环境时,ENS前体可以采用ICNS类特征,包括表达心脏匹配的ECM基因.
- 这项研究揭示了管理不同器官内在神经元成熟和专业化的基本原则.
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