Neurexin controls plasticity of a mature, sexually dimorphic neuron.

Neurexin controls plasticity of a mature, sexually dimorphic neuron.
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DOI:
10.1038/nature25192
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发表时间:
2018-01-10
期刊:
影响因子:
64.8
通讯作者:
Hobert O
Hobert O
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Hart MP;Hobert O

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在发育和成年期,大脑的可塑性在几个层面上都很明显,从突触结构和功能到树突和轴突的生长。性是否以及如何影响神经元的可塑性还知之甚少。在这里,我们表明,C。elegans性别共享的GABA能DVB神经元显示经验依赖性和性别二态性形态可塑性,其特征在于成年雄性中多个神经突的随机和动态添加。这些增加的神经突使DVB神经元的突触重新布线,指示神经元的功能开关并直接修改雄性交配行为的步骤,这两者都通过经验和突触后活动操纵来改变。我们发现,DVB神经突起的生长是由突触前NRX-1/neurexin和突触后NLG-1/neuroligin限制,提供了一个新的背景下,这两个分子的操作。
During development and adulthood, brain plasticity is evident at several levels, from synaptic structure and function to outgrowth of dendrites and axons. Whether and how sex impinges on neuronal plasticity is poorly understood. Here we show that the C. elegans sex-shared GABAergic DVB neuron displays experience-dependent and sexually dimorphic morphologic plasticity, characterized by the stochastic and dynamic addition of multiple neurites in adult males. These added neurites enable synaptic rewiring of the DVB neuron, instructing a functional switch of the neuron and directly modifying a step of male mating behavior, both of which are altered by experience and post-synaptic activity manipulations. We show that the outgrowth of DVB neurites is promoted by presynaptic NRX-1/neurexin and restricted by postsynaptic NLG-1/neuroligin, providing a novel context in which these two molecules operate.
神经科学中的细胞生物学:Hebbian和稳态突触可塑性之间的相互作用。
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