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首页> 外文期刊>The European Journal of Neuroscience >Regulation of kinesin light chain 1 level correlates with the development of morphine reward in the mouse brain.
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Regulation of kinesin light chain 1 level correlates with the development of morphine reward in the mouse brain.

机译:驱动蛋白轻链1水平的调节与小鼠脑中吗啡奖励的发展有关。

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摘要

Persistent changes that take place during the development of opioid addiction are thought to be due to reorganization of synaptic connections in relevant brain circuits. This neuronal plasticity requires trafficking of signaling molecules that are controlled by kinesins. In neurons, kinesin light chain 1 (KLC1) acts as the primary regulator of kinesin action. We observed that KLC1 was enriched in sub-cortical regions of the brain in C57Bl/6J mice. KLC1 expression was especially enriched in the striatum, hippocampus and amygdala, which are known to be involved in opioid addiction. Our study revealed that conditioning of C57Bl/6J mice with morphine elevated KLC1 levels in the amygdala, frontal cortex and hippocampus, but not in the striatum. Further study revealed that alterations in KLC1 protein levels in the studied brain regions correlated with the expression of morphine-induced conditioned place preference. In the cortex, hippocampus and amygdala, KLC1 co-localized with calcium/calmodulin-dependent protein kinase II (CaMKII), suggesting that KLC1 was present in the cell bodies and dendrites of pyramidal neurons. Our findings indicate that KLC1, a molecule involved in dendritic and axonal transport in the brain, is affected during chronic morphine treatment and may be involved in the development of opioid addiction.
机译:阿片类药物成瘾发生期间发生的持续变化被认为是由于相关脑回路中突触连接的重组所致。这种神经元可塑性需要运输由驱动蛋白控制的信号分子。在神经元中,驱动蛋白轻链1(KLC1)充当驱动蛋白作用的主要调节剂。我们观察到,CLCBl / 6J小鼠的大脑皮层下区域富含KLC1。 KLC1​​的表达在纹状体,海马和杏仁核中特别丰富,这些物质已知与阿片类药物成瘾有关。我们的研究表明,用吗啡对C57Bl / 6J小鼠进行调节后,杏仁核,额叶皮层和海马体中的KLC1水平升高,而纹状体中的KLC1水平却升高。进一步的研究表明,所研究的大脑区域中KLC1蛋白水平的改变与吗啡诱导的条件性位置偏爱的表达相关。在皮质,海马和杏仁核中,KLC1与钙/钙调蛋白依赖性蛋白激酶II(CaMKII)共定位,表明KLC1存在于锥体神经元的细胞体和树突中。我们的发现表明,KLC1是一种参与脑中树突状和轴突运输的分子,在慢性吗啡治疗期间会受到影响,并且可能参与了阿片类药物成瘾的发展。

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