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首页> 外文期刊>Neuron >The homeodomain factor lbx1 distinguishes two major programs of neuronal differentiation in the dorsal spinal cord.
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The homeodomain factor lbx1 distinguishes two major programs of neuronal differentiation in the dorsal spinal cord.

机译:同源域因子lbx1区分了脊髓背神经元分化的两个主要程序。

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Dorsal horn neurons in the spinal cord integrate and relay sensory information. Here, we show that the expression of the homeobox gene Lbx1 distinguishes two major neuronal classes generated in the dorsal spinal cord. The Lbx1(-) (class A) and Lbx1(+) (class B) neurons differ in their dependence on roof plate BMP signals for specification and settle in the deep and superficial dorsal horn, respectively. Lbx1 misexpression blocks the differentiation of class A neurons. Conversely, in Lbx1 mutant mice, class B neurons assume the identity of class A neurons. As a consequence, the morphology and neuronal circuitry of the dorsal horn are aberrant. We conclude that Lbx1 distinguishes two major neuronal classes in the dorsal spinal cord and is an important determinant of their distinct differentiation programs.
机译:脊髓中的背角神经元整合并传递感觉信息。在这里,我们显示同源盒基因Lbx1的表达区分背脊髓中生成的两个主要神经元类。 Lbx1(-)(A类)和Lbx1(+)(B类)神经元在规格上对屋顶BMP信号的依赖性不同,分别位于深部和浅表背角。 Lbx1表达异常会阻止A类神经元的分化。相反,在Lbx1突变小鼠中,B类神经元具有A类神经元的身份。结果,背角的形态和神经元回路异常。我们得出的结论是,Lbx1可以区分脊髓背侧的两个主要神经元类别,并且是它们独特的分化程序的重要决定因素。

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