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Transcription factors make a turn into migration

By Pietro Fazzari


The formation of the brain depends on a tightly regulated process of proliferation, neuronal fate specification and migration which eventually leads to the final architecture of the cerebral cortex. The specification of different neuronal subtypes depends on a complex developmental program mastered by several transcription factors. Besides, it was shown that the same transcription factors can subsequently control neural migration. However, the mechanisms of this regulation are still unclear. Two papers recently published by Heng et al.1 and Nóbrega-Pereira et al.2 confirm that these transcription factors are involved in controlling neural migration. In addition, these studies show that these transcription factors can control neural migration via different molecular mechanisms: Heng and coworkers show that Neurogenin 2 controls neural migration by directly regulating the expression of the small GTPase Rnd2 (a modulator of cytoskeletal dynamics); whereas Nóbrega-Pereira and colleagues demonstrate that Nkx2-1 establishes the response to guidance cues, in migrating interneurons, by directly regulating the expression of the semaphorin receptor Neuropilin 2

Topics: Journal Club
Publisher: Landes Bioscience
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Provided by: PubMed Central
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