The schizophrenia susceptibility gene dysbindin controls synaptic homeostasis.

The schizophrenia susceptibility gene dysbindin controls synaptic homeostasis.
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DOI:
10.1126/science.1179685
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发表时间:
2009-11-20
期刊:
Science (New York, N.Y.)
影响因子:
--
通讯作者:
Davis GW
Davis GW
中科院分区:
其他
文献类型:
--
作者:
Dickman DK;Davis GW

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实现神经功能稳态稳定的分子机制在很大程度上仍然未知。为了帮助理解神经功能在发育过程中和整个生命过程中是如何稳定的,我们使用了基于电生理学的正向遗传筛选,并评估了超过250个神经元表达基因在果蝇突触传递稳态调节中的作用。这项筛选排除了许多突触蛋白的参与,并确定了与人类精神分裂症相关的基因dysbindin的关键功能。Dysbindin在突触前对于神经传递的逆行和稳态调节是必不可少的。Dysbindin以剂量依赖性方式在钙内流下游或独立发挥作用。因此,Dysbindin对于适应性神经可塑性是必不可少的,并且可能将改变的稳态信号传导与复杂的神经系统疾病联系起来。
The molecular mechanisms that achieve homeostatic stabilization of neural function remain largely unknown. To help understand how neural function is stabilized during development and throughout life we used an electrophysiology-based forward genetic screen and assessed the function of over 250 neuronally expressed genes for a role in the homeostatic modulation of synaptic transmission in Drosophila. This screen ruled out the involvement of numerous synaptic proteins and identified a critical function for dysbindin, a gene linked to schizophrenia in human. Dysbindin was essential, presynaptically, for the retrograde, homeostatic modulation of neurotransmission. Dysbindin functioned in a dose-dependent manner downstream or independently of calcium influx. Thus, Dysbindin is essential for adaptive neural plasticity, and may link altered homeostatic signaling with a complex neurological disease.
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