人类大脑中甲状腺皮层连接的遗传学保存轴
Stuart Oldham1,2, Gareth Ball3,4
1Developmental Imaging, Murdoch Children's Research Institute, Parkville, VIC, Australia. stuart.oldham@mcri.edu.au.
Nature communications
|September 27, 2023
概括
对于大脑功能至关重要的丘脑沿着连续的中侧梯度组织,而不是离散的核. 这种渐变链接基因表达和连接性,影响皮质模式和大脑疾病.
科学领域:
- 神经科学是一个神经科学.
- 神经解剖学是一个神经解剖学.
- 系统神经科学 系统神经科学
背景情况:
- thalamus 对于感觉,运动,情绪和认知功能至关重要,与大脑皮层广泛连接.
- 传统模型将thalamic组织视为离散的核,但最近的证据表明分子和连接特征的连续梯度.
- 了解甲状腺皮层组织是解读大脑功能和功能障碍的关键.
研究的目的:
- 为了研究沿着连续维度的thalamocortical连接的组织.
- 根据基因表达和连接性来定义成年人类 thalamus 中的主要变异轴.
- 探索这个组织原则的功能和进化含义.
主要方法:
- 密集采集的基因表达数据的联合分解和成年人类 thalamus 的非侵入性扩散通道学.
- 对遗传和连接组变异的一个主要轴的分析.
- 与皮质模式的相关性,电生理学特性,遗传学保存,神经元亚型和神经发育障碍.
主要成果:
- 一个主要的遗传和连接基因变异轴沿着中侧侧面的胸膜梯度被确定.
- 沿着这个轴的投影显示了皮质中相应的前后模式,与皮质电生理学保持一致.
- 这条中侧轴表明了家族遗传的保存,神经元亚型的过渡,以及与神经发育和大脑疾病的关联.
结论:
- 甲状腺皮层组织的特点是超核轴,在分子和解剖学性质上有分级过渡.
- 这种连续的组织原理挑战了离散核模型,并提供了对thalamic功能的新见解.
- 已识别的轴对理解大脑发育,进化和常见的神经和精神疾病有影响.
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