首页> 外文期刊>Neuron >Role of IGF signaling in olfactory sensory map formation and axon guidance.
【24h】

Role of IGF signaling in olfactory sensory map formation and axon guidance.

机译:IGF信号在嗅觉感觉图形成和轴突指导中的作用。

获取原文
获取原文并翻译 | 示例
           

摘要

Olfactory neurons project their axons to spatially invariant glomeruli in the olfactory bulb, forming an ordered pattern of innervation comprising the olfactory sensory map. A mirror symmetry exists within this map, such that neurons expressing a given receptor typically project to one glomerulus on the medial face and one glomerulus on the lateral face of the bulb. The mechanisms underlying an olfactory neuron's choice to project medially versus laterally remain largely unknown, however. Here we demonstrate that insulin-like growth factor (IGF) signaling is required for sensory innervation of the lateral olfactory bulb. Mutations that eliminate IGF signaling cause axons destined for targets in the lateral bulb to shift to ectopic sites on the ventral-medial surface. Using primary cultures of olfactory and cerebellar neurons, we further show that IGF is a chemoattractant for axon growth cones. Together these observations reveal a role of IGF signaling in sensory map formation and axon guidance.
机译:嗅觉神经元将其轴突投射到嗅球中的空间不变肾小球上,形成包含嗅觉感觉图的神经支配有序模式。在该图中存在镜对称性,使得表达给定受体的神经元通常投射到灯泡内侧的一个肾小球和灯泡外侧的一个肾小球。然而,嗅觉神经元选择向内侧投射还是向外侧投射的潜在机制仍然未知。在这里,我们证明胰岛素样生长因子(IGF)信号是外侧嗅球感觉神经支配所必需的。消除IGF信号传导的突变会导致定位于外侧球标靶的轴突转移到腹内侧表面的异位部位。使用嗅觉和小脑神经元的原代培养,我们进一步表明,IGF是轴突生长锥的化学吸引剂。这些观察结果共同揭示了IGF信号传导在感觉图形成和轴突引导中的作用。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号