The tectonigral pathway regulates appetitive locomotion in predatory hunting in mice.

The tectonigral pathway regulates appetitive locomotion in predatory hunting in mice.
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DOI:
10.1038/s41467-021-24696-3
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发表时间:
2021-07-20
影响因子:
16.6
通讯作者:
Cao P
Cao P
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Huang M;Li D;Cheng X;Pei Q;Xie Z;Gu H;Zhang X;Chen Z;Liu A;Wang Y;Sun F;Li Y;Zhang J;He M;Xie Y;Zhang F;Qi X;Shang C;Cao P

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食欲运动是动物接近食物和猎物等奖励的必要条件。控制食欲运动的神经元回路尚不清楚。在一个目标导向的行为捕食狩猎,我们显示了一个兴奋性的大脑回路从上级丘(SC)的黑质pars rectata(SNc),以提高小鼠的食欲运动。这种tectonigral通路将运动速度信号传递给多巴胺神经元,并触发背侧纹状体中的多巴胺释放。该通路的突触失活损害食欲运动,但不损害防御运动。相反,激活这条通路会增加捕食性狩猎过程中接近的速度和频率,这一效应取决于SNc多巴胺神经元的活动。总之,这些数据表明,SC调节运动速度信号的SNc多巴胺神经元,以提高小鼠的食欲运动。目标导向运动是动物的基本行为。在这里,作者表明,上级丘的神经元投射到黑质部,调节多巴胺能信号,特别是小鼠的食欲运动。
Appetitive locomotion is essential for animals to approach rewards, such as food and prey. The neuronal circuitry controlling appetitive locomotion is unclear. In a goal-directed behavior—predatory hunting, we show an excitatory brain circuit from the superior colliculus (SC) to the substantia nigra pars compacta (SNc) to enhance appetitive locomotion in mice. This tectonigral pathway transmits locomotion-speed signals to dopamine neurons and triggers dopamine release in the dorsal striatum. Synaptic inactivation of this pathway impairs appetitive locomotion but not defensive locomotion. Conversely, activation of this pathway increases the speed and frequency of approach during predatory hunting, an effect that depends on the activities of SNc dopamine neurons. Together, these data reveal that the SC regulates locomotion-speed signals to SNc dopamine neurons to enhance appetitive locomotion in mice. Goal-oriented movement is a fundamental animal behaviour. Here, the authors show that neurons in the superior colliculus project to the substantia nigra pars compacta, regulating dopaminergic signaling and specifically appetitive locomotion in mice.
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