Visualizing septin and cell dynamics in mammalian brain slices.

Area of Science:

• Neuroscience
• Developmental Biology
• Genetics

Background:

• Neuronal migration is essential for proper brain architecture and function.
• Excitatory and inhibitory neurons migrate during development from specific progenitor zones.
• Accurate spatiotemporal regulation of migration is critical.

Purpose of the Study:

• To describe and exemplify advanced methods for studying brain development.
• To showcase the utility of in utero electroporation (IUE) and in vivo electroporation (IVE) for gene function analysis.
• To highlight the role of septins in neuronal development and neurological disorders.

Main Methods:

• Basic immunohistochemistry for visualizing protein distribution (e.g., Sept6, Sept9, Sept14).
• In utero electroporation (IUE) for gene transfer into rodent embryonic progenitor cells.
• In vivo electroporation (IVE) for gene transfer into neonatal mouse hippocampal granule cells.
• IUE-based time-lapse imaging for analyzing cortical neuron migration.

Main Results:

• Demonstrated immunohistochemistry for septin distribution.
• Provided examples of IUE for functional analysis of Sept14 during brain development.
• Illustrated IVE for gene transfer in the hippocampus.
• Explained IUE-based time-lapse imaging for migration studies.

Conclusions:

• IUE and IVE are powerful tools for gain- and loss-of-function studies in brain development.
• These methods facilitate morphological analysis of molecules like septins.
• Understanding neuronal migration mechanisms is key to elucidating roles in neurological and psychiatric disorders.