Diversification of molecularly defined myenteric neuron classes revealed by single-cell RNA sequencing.

Diversification of molecularly defined myenteric neuron classes revealed by single-cell RNA sequencing.
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通过单细胞RNA测序揭示的分子定义的肌神经元类别的多样化。

DOI:
10.1038/s41593-020-00736-x
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发表时间:
2021-01
影响因子:
25
通讯作者:
Marklund U
Marklund U
中科院分区:
医学1区
文献类型:
--
作者:
Morarach K;Mikhailova A;Knoflach V;Memic F;Kumar R;Li W;Ernfors P;Marklund U

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肠的自主调节需要肠神经系统(ENS)的功能不同的神经元的组合活动。然而,肠神经元类型的多样性以及它们在发育过程中如何出现仍然是未知的。在这里,我们定义了一个分子分类的十二肠神经元类内的肌间神经丛的小鼠小肠单细胞RNA测序。我们目前的细胞间通讯功能,组织化学标记的运动,感觉,和中间神经元与转基因工具类特异性靶向。胚胎ENS的转录组分析揭示了神经元多样化的新原理,其中两个神经元类通过二元神经源性分支产生,并且所有其他身份通过随后的有丝分裂后分化出现。我们确定了通用和类特异性转录调控和功能连接Pbx3有丝分裂后的命运转变。我们的研究结果提供了一个概念和分子资源解剖ENS电路,并预测不同的肠神经元类的定向分化的关键监管机构。
Autonomous regulation of the intestine requires the combined activity of functionally distinct neurons of the enteric nervous system (ENS). However, the variety of enteric neuron types and how they emerge during development remain largely unknown. Here, we define a molecular taxonomy of twelve enteric neuron classes within the myenteric plexus of the mouse small intestine using single cell RNA-sequencing. We present cell-cell communication features, histochemical markers for motor, sensory, and interneurons together with transgenic tools for class-specific targeting. Transcriptome analysis of embryonic ENS uncovers a novel principle of neuronal diversification, where two neuron classes arise through a binary neurogenic branching, and all other identities emerge through subsequent post-mitotic differentiation. We identify generic and class-specific transcriptional regulators and functionally connect Pbx3 to a post-mitotic fate transition. Our results offer a conceptual and molecular resource for dissecting ENS circuits, and predicting key regulators for directed differentiation of distinct enteric neuron classes.
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