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Continuous and Discrete Neuron Types of the Adult Murine Striatum

机译:连续和离散神经元类型的成人鼠纹状体

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摘要

The mammalian striatum is involved in many complex behaviors and yet is composed largely of a single neuron class: the spiny projection neuron (SPN). It is unclear to what extent the functional specialization of the striatumis due to the molecular specialization of SPN subtypes. We sought to define the molecular and anatomical diversity of adult SPNs using single-cell RNA sequencing (scRNA-seq) and quantitative RNA in situ hybridization (ISH). We computationally distinguished discrete versus continuous heterogeneity in scRNA-seq data and found that SPNs in the striatum can be classified into four major discrete types with no implied spatial relationship between them. Within these discrete types, we find continuous heterogeneity encoding spatial gradients of gene expression and defining anatomical location in a combinatorial mechanism. Our results suggest that neuronal circuitry has a substructure at far higher resolution than is typically interrogated, which is defined by the precise identity and location of a neuron.
机译:哺乳动物纹状体涉及许多复杂的行为,但尚未根据单个神经元等级组成:多刺的投影神经元(SPN)。目前尚不清楚纹状体的功能专业,由于SPN亚型的分子专业化。我们试图使用单细胞RNA测序(ScRNA-SEQ)和原位杂交(ISH)的定量RNA来定义成年SPN的分子和解剖分集。我们在ScrNA-SEQ数据中计算地分辨离散相对于连续异质性,发现纹状体中的SPN可以分为四种主要的离散类型,而不是它们之间没有隐含的空间关系。在这些离散类型内,我们发现在组合机构中的基因表达的连续异质性并在组合机构中定义解剖学位置。我们的研究结果表明,神经元电路具有比通常询问的较高分辨率的下部结构,这由神经元的精确标识和位置定义。

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  • 来源
    《Neuron》 |2020年第4期|共12页
  • 作者单位

    Stanford Univ Sch Med Program Biophys Stanford CA 94305 USA;

    Stanford Univ Sch Med Dept Mol &

    Cellular Physiol Stanford CA 94305 USA;

    Stanford Univ Sch Med Dept Psychiat &

    Behav Sci Nancy Pritzker Lab Stanford CA 94305 USA;

    Stanford Univ Sch Med Dept Mol &

    Cellular Physiol Stanford CA 94305 USA;

    Stanford Univ Dept Bioengn Stanford CA 94305 USA;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 神经病学;
  • 关键词

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