Transcriptional co-regulation of neuronal migration and laminar identity in the neocortex

作者：Kenneth Y. Kwan, Nenad Šestan, E.S. Anton · 发表于：Development · 年份：2012 · DOI：10.1242/dev.069963 · 被引用次数：401 · 研究领域：Axon Guidance and Neuronal Signaling、Neurogenesis and neuroplasticity mechanisms、Neuroscience and Neuropharmacology Research

The cerebral neocortex is segregated into six horizontal layers, each containing unique populations of molecularly and functionally distinct excitatory projection (pyramidal) neurons and inhibitory interneurons. Development of the neocortex requires the orchestrated execution of a series of crucial processes, including the migration of young neurons into appropriate positions within the nascent neocortex, and the acquisition of layer-specific neuronal identities and axonal projections. Here, we discuss emerging evidence supporting the notion that the migration and final laminar positioning of cortical neurons are also co-regulated by cell type- and layer-specific transcription factors that play concomitant roles in determining the molecular identity and axonal connectivity of these neurons. These transcriptional programs thus provide direct links between the mechanisms controlling the laminar position and identity of cortical neurons.