首页> 外文期刊>Neuron >A mouse serine/threonine kinase homologous to C. elegans UNC51 functions in parallel fiber formation of cerebellar granule neurons.
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A mouse serine/threonine kinase homologous to C. elegans UNC51 functions in parallel fiber formation of cerebellar granule neurons.

机译:与秀丽隐杆线虫UNC51同源的小鼠丝氨酸/苏氨酸激酶在小脑颗粒神经元的平行纤维形成中起作用。

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摘要

The formation of the cerebellar circuitry depends on the outgrowth of connections between the two principal classes of neurons, granule neurons and Purkinje neurons. To identify genes that function in axon outgrowth, we have isolated a mouse homolog of C. elegans UNC51, which is required for axon formation, and tested its function in cerebellar granule neurons. Murine Unc51.1 encodes a novel serine/threonine kinase and is expressed in granule cells in the cerebellar cortex. Retroviral infection of immature granule cells with a dominant negative Unc51.1 results in inhibition of neurite outgrowth in vitro and in vivo. Moreover, infected neurons fail to express TAG-1 or neuron-specific beta-tubulin, suggesting that development is arrested prior to this initial step of differentiation. Thus, Unc51.1 signals the program of gene expression leading to the formation of granule cell axons.
机译:小脑回路的形成取决于两个主要类别的神经元(颗粒神经元和浦肯野神经元)之间连接的扩展。为了鉴定在轴突生长中起作用的基因,我们分离了轴突形成所需的秀丽隐杆线虫UNC51小鼠同源物,并测试了其在小脑颗粒神经元中的功能。鼠Unc51.1编码一种新型的丝氨酸/苏氨酸激酶,并在小脑皮质的颗粒细胞中表达。显性阴性Unc51.1对未成熟颗粒细胞的逆转录病毒感染可在体外和体内抑制神经突的生长。此外,受感染的神经元不能表达TAG-1或神经元特异性的β-微管蛋白,这表明发育在此初始分化步骤之前就被阻止了。因此,Unc51.1发出信号的基因表达程序导致颗粒细胞轴突的形成。

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