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首页> 外文期刊>Neuron >A Whole-Brain Atlas of Inputs to Serotonergic Neurons of the Dorsal and Median Raphe Nuclei
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A Whole-Brain Atlas of Inputs to Serotonergic Neurons of the Dorsal and Median Raphe Nuclei

机译:全脑图谱输入的背和中部拉菲核的血清素能神经元。

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The serotonin system is proposed to regulate physiology and behavior and to underlie mood disorders; nevertheless, the circuitry controlling serotonergic neurons remains uncharacterized. We therefore generated a comprehensive whole-brain atlas defining the monosynaptic inputs onto forebrain-projecting serotonergic neurons of dorsal versus median raphe based on a genetically restricted transsynaptic retrograde tracing strategy. We identified discrete inputs onto serotonergic neurons from forebrain and brainstem neurons, with specific inputs from hypothalamus, cortex, basal ganglia, and midbrain, displaying a greater than anticipated complexity and diversity in cell-type-specific connectivity. We identified and functionally confirmed monosynaptic glutamatergic inputs from prefrontal cortex and lateral habenula onto serotonergic neurons as well as a direct GABAergic input from striatal projection neurons. In summary, our findings emphasize the role of hyperdirect inputs to serotonergic neurons. Cell-type-specific classification of connectivity patterns will allow for further functional analysis of the diverse but specific inputs that control serotonergic neurons during behavior.
机译:建议使用5-羟色胺系统来调节生理和行为,并作为情绪障碍的基础。然而,控制血清素能神经元的电路仍未表征。因此,我们基于基因受限的跨突触逆行追踪策略,定义了一个完整的全脑图集,将全突触输入定义到背侧和正中线的前脑投射性血清素能神经元上。我们从前脑和脑干神经元中识别出了血清素能神经元的离散输入,下丘脑,皮层,基底神经节和中脑的特定输入,显示出比预期的细胞类型特异性连通性更大的复杂性和多样性。我们从前额叶皮层和侧ha上将单突触性谷氨酸能输入确定为血清素能神经元,并从纹状体投射神经元直接获得GABA能输入。总之,我们的发现强调了对血清素能神经元的超直接输入的作用。连接模式的特定于细胞类型的分类将允许对行为期间控制血清素能神经元的多种多样但特定的输入进行进一步的功能分析。

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