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Foxp1 regulates cortical radial migration and neuronal morphogenesis in developing cerebral cortex.
Xue Li1, Jian Xiao1, Henning Fröhlich2
1Key Laboratory of Visual Science, National Ministry of Health, and School of Optometry and Ophthalmology, Wenzhou Medical University, Wenzhou, 325027, P. R. China.
Plos One
|May 27, 2015
Summary
The transcription factor FOXP1 (forkhead box P1) is crucial for neuronal development. Suppressing FOXP1 in mice caused defects in neuronal migration and axonal growth, impacting brain development and potentially cognitive disorders.
Area of Science:
- Neuroscience
- Developmental Biology
- Genetics
Background:
- FOXP1, a transcription factor, is implicated in cognitive disorders.
- Its specific role in neuronal development remains largely uncharacterized.
Purpose of the Study:
- To investigate the function of FOXP1 in mouse cerebral cortex neuronal development.
- To elucidate the mechanisms underlying FOXP1's role in neuronal migration and morphogenesis.
Main Methods:
- Used gene knockdown and overexpression techniques to manipulate Foxp1 expression in mouse cortical neurons.
- Performed in vitro and in vivo analyses to assess neuronal migration, differentiation, axonal growth, and dendritic maturation.
Main Results:
- Foxp1 suppression led to significant neuronal migration defects, with ectopic neurons observed in deep cortical layers.
- While neuronal differentiation was unaffected, Foxp1 deficiency inhibited axonal growth in vitro and impaired the multipolar-to-bipolar transition in vivo.
- FOXP1 expression levels influenced dendritic maturation in late-stage postnatal neurons.
Conclusions:
- FOXP1 plays critical roles in radial migration and morphogenesis of cortical neurons during development.
- These findings contribute to understanding the etiology of FOXP1-related cognitive disorders by highlighting its importance in neuronal development.
