A pair of dopamine neurons target the D1-like dopamine receptor DopR in the central complex to promote ethanol-stimulated locomotion in Drosophila.

A pair of dopamine neurons target the D1-like dopamine receptor DopR in the central complex to promote ethanol-stimulated locomotion in Drosophila.
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DOI:
10.1371/journal.pone.0009954
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发表时间:
2010-04-01
期刊:
影响因子:
3.7
通讯作者:
Wolf FW
Wolf FW
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Kong EC;Woo K;Li H;Lebestky T;Mayer N;Sniffen MR;Heberlein U;Bainton RJ;Hirsh J;Wolf FW

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在哺乳动物和果蝇中,多巴胺是滥用药物(包括乙醇)的刺激性特性的中介。乙醇对果蝇的刺激作用的神经底物尚不清楚。我们发现,多巴胺神经元的一个子集及其靶点,通过D1样多巴胺受体DOPR的作用,促进了对急性酒精暴露的运动激活。苍蝇脑中的一对多巴胺能神经元介导乙醇暴露引起的增强的运动活动,并在直接激活时促进运动。这些神经元投射到中央复杂的椭球体,这是一个与调节运动行为有关的结构。乙醇诱导的运动活动需要椭球体神经元,它们表达DOPR。DOPR的消除减弱了乙醇的运动激活作用,这种行为可以通过在椭圆形小体中选择性表达DOPR来恢复。这些数据将已定义的多巴胺神经元的活动与D1样DOPR表达的神经元联系起来,形成管理对乙醇的急性反应的神经回路。
Dopamine is a mediator of the stimulant properties of drugs of abuse, including ethanol, in mammals and in the fruit fly Drosophila. The neural substrates for the stimulant actions of ethanol in flies are not known. We show that a subset of dopamine neurons and their targets, through the action of the D1-like dopamine receptor DopR, promote locomotor activation in response to acute ethanol exposure. A bilateral pair of dopaminergic neurons in the fly brain mediates the enhanced locomotor activity induced by ethanol exposure, and promotes locomotion when directly activated. These neurons project to the central complex ellipsoid body, a structure implicated in regulating motor behaviors. Ellipsoid body neurons are required for ethanol-induced locomotor activity and they express DopR. Elimination of DopR blunts the locomotor activating effects of ethanol, and this behavior can be restored by selective expression of DopR in the ellipsoid body. These data tie the activity of defined dopamine neurons to D1-like DopR-expressing neurons to form a neural circuit that governs acute responding to ethanol.
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