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首页> 外文期刊>Neuron >Slit proteins prevent midline crossing and determine the dorsoventral position of major axonal pathways in the mammalian forebrain.
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Slit proteins prevent midline crossing and determine the dorsoventral position of major axonal pathways in the mammalian forebrain.

机译:狭缝蛋白可防止中线交叉并确定哺乳动物前脑中主要轴突途径的背腹位置。

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摘要

We report that Slit proteins, a family of secreted chemorepellents, are crucial for the proper development of several major forebrain tracts. Mice deficient in Slit2 and, even more so, mice deficient in both Slit1 and Slit2 show significant axon guidance errors in a variety of pathways, including corticofugal, callosal, and thalamocortical tracts. Analysis of multiple pathways suggests several generalizations regarding the functions of Slit proteins in the brain, which appear to contribute to (1) the maintenance of dorsal position by prevention of axonal growth into ventral regions, (2) the prevention of axonal extension toward and across the midline, and (3) the channeling of axons toward particular regions.
机译:我们报告说,裂隙蛋白是一种分泌的化学趋化剂,对于几个主要的前脑束的正常发育至关重要。 Slit2缺乏的小鼠,甚至Slit1和Slit2均缺乏的小鼠在多种途径中均表现出明显的轴突引导错误,包括皮质漏斗,愈伤组织和丘脑皮质。多种途径的分析提出了关于脑中Slit蛋白功能的几种概括,这似乎有助于(1)通过防止轴突生长进入腹侧区来维持背侧位置,(2)防止轴突向和跨过轴突延伸。中线;(3)轴突向特定区域的引导。

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