The cell adhesion protein CAR is a negative regulator of synaptic transmission

The cell adhesion protein CAR is a negative regulator of synaptic transmission
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细胞粘附蛋白 CAR 是突触传递的负调节因子

DOI:
10.1038/s41598-019-43150-5
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发表时间:
2019
期刊:
影响因子:
4.6
通讯作者:
Gotthardt
Gotthardt
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Wrackmeyer;Kaldrack;Jüttner;Pannasch;Gimber;Freiberg;Schmitz;Haucke;Rathjen;Gotthardt

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柯萨奇病毒和腺病毒受体(CAR)是心脏正常电导所必需的,但其在出生后大脑中的作用在很大程度上是未知的。使用脑特异性CAR敲除小鼠(KO),我们发现了CAR在神经元通信中的意想不到的作用。这包括增加海马Schaffer侧支的基本突触传递、抗疲劳和增强的长时程增强。自发性神经递质释放和内吞速度在科斯中增加,伴随着胞吐相关的钙传感器突触结合蛋白2的表达增加。使用邻近蛋白质组学和结合研究,我们将CAR与胞吐机制联系起来,因为它与突触处的syntenin和synaptobrevin/VAMP 2相关。增加的突触功能不会对KO小鼠造成不良影响,因为行为和学习不受影响。因此,与心脏敲除中房室传导的连接蛋白依赖性抑制不同,CAR缺陷脑中的通信得到改善,表明CAR在突触前过程中的作用。
The Coxsackievirus and adenovirus receptor (CAR) is essential for normal electrical conductance in the heart, but its role in the postnatal brain is largely unknown. Using brain specific CAR knockout mice (KO), we discovered an unexpected role of CAR in neuronal communication. This includes increased basic synaptic transmission at hippocampal Schaffer collaterals, resistance to fatigue, and enhanced long-term potentiation. Spontaneous neurotransmitter release and speed of endocytosis are increased in KOs, accompanied by increased expression of the exocytosis associated calcium sensor synaptotagmin 2. Using proximity proteomics and binding studies, we link CAR to the exocytosis machinery as it associates with syntenin and synaptobrevin/VAMP2 at the synapse. Increased synaptic function does not cause adverse effects in KO mice, as behavior and learning are unaffected. Thus, unlike the connexin-dependent suppression of atrioventricular conduction in the cardiac knockout, communication in the CAR deficient brain is improved, suggesting a role for CAR in presynaptic processes.
DOI: 10.1016/j.neuron.2013.08.010
发表时间: 2013-10-16
期刊: NEURON
影响因子: 16.2
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Hua, Yunfeng;Woehler, Andrew;Klingauf, Juergen
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DOI: 10.1016/j.jacc.2008.10.064
发表时间: 2009-04-07
影响因子: 24
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DOI: 10.1126/science.285.5431.1268
发表时间: 1999-08-20
期刊: SCIENCE
影响因子: 56.9
作者:
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通讯作者: De Camilli, P