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首页> 外文期刊>Neuron >N-cadherin regulates target specificity in the Drosophila visual system.
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N-cadherin regulates target specificity in the Drosophila visual system.

机译:N-钙粘蛋白调节果蝇视觉系统中的靶标特异性。

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摘要

Using visual behavioral screens in Drosophila, we identified multiple alleles of N-cadherin. Removal of N-cadherin selectively from photoreceptor neurons (R cells) causes deficits in specific visual behaviors that correlate with disruptions in R cell connectivity. These defects include disruptions in the pattern of neuronal connections made by all three classes of R cells (R1-R6, R7, and R8). N-cadherin is expressed in both R cell axons and their targets. By inducing mitotic recombination in a subclass of eye progenitors, we generated mutant R7 axons surrounded by largely wild-type R cell axons and a wild-type target. R7 axons lacking N-cadherin mistarget to the R8 recipient layer. We consider the implications of these findings in the context of the proposed role for cadherins in target specificity.
机译:使用果蝇中的视觉行为屏幕,我们确定了N-钙粘蛋白的多个等位基因。从感光神经元(R细胞)中选择性去除N-钙粘蛋白会导致特定视觉行为的缺陷,这与R细胞连通性的破坏有关。这些缺陷包括所有三类R细胞(R1-R6,R7和R8)形成的神经元连接模式的破坏。 N-钙粘着蛋白在R细胞轴突及其靶标中都有表达。通过在眼祖细胞的一个亚类中诱导有丝分裂重组,我们产生了突变型R7轴突,该轴突主要被野生型R细胞轴突和野生型靶所包围。缺少N-钙粘着蛋白的R7轴突错误地定向到R8接收层。在钙粘蛋白在靶标特异性中的拟议作用中,我们考虑了这些发现的含义。

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