鼠标和人类共享内部神经元发育的保存转录程序
Yingchao Shi1, Mengdi Wang1,2, Da Mi3,4,5
1State Key Laboratory of Brain and Cognitive Science, CAS Center for Excellence in Brain Science and Intelligence Technology (Shanghai), Institute of Biophysics, Chinese Academy of Sciences (CAS), BNU IDG/McGovern Institute for Brain Research, Beijing 100101, China.
Science (New York, N.Y.)
|December 9, 2021
概括
遗传变异通过改变特定的大脑细胞影响神经发育障碍. 这项研究揭示了人类胎儿大脑发育过程中产生关键抑制神经元的机制,
科学领域:
- 神经科学
- 发育生物学
- 遗传学
背景情况:
- 包括自闭症和精神分裂症在内的神经发育障碍与特定神经元群体的改变有关.
- 皮质和条状神经元表达胺酸 (GABAergic) 特别涉及这些疾病.
- 了解这些神经元的早期发育对于破译疾病机制至关重要.
研究的目的:
- 描述人类胎儿大脑中GABAergic神经元的细胞多样性和发育轨迹.
- 调查控制这些神经元的特异性和差异化的转录程序.
- 将人类GABA能神经元发育与已知的动物模型进行比较.
主要方法:
- 用单细胞RNA测序 (scRNA-seq) 来分析人类质突出细胞的细胞群.
- 使用scRNA- seq数据来确定原生细胞之间的区域和时间多样性.
- 进行计算分析以推断转录调节逻辑.
主要成果:
- 在人类状突出细胞中发现了显著的区域和时间多样性.
- 标志着多种投影神经元和内神经元的出现.
- 发现人类的GABAergic神经元特异性的转录程序与动物的类似.
- 揭示了控制GABAergic神经元发育的保护性调节机制.
结论:
- 人类质突出表现出复杂的原生细胞多样性,这对于产生各种GABAergic神经元类型至关重要.
- 人类GABA活性神经元的发育途径与动物具有相同的调节逻辑.
- 这些发现为人类大脑发育和神经发育障碍的进化基础提供了洞察力.
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