Continuum modeling for neuronal lamination during cerebral morphogenesis considering cell migration and tissue growth

Area of Science:

• Developmental biology
• Computational neuroscience
• Biophysics

Background:

• Neuronal lamination is critical for cerebral cortex development.
• Later-born neurons migrate through existing neuronal layers.
• This migration is influenced by biochemical signals and tissue mechanics.

Purpose of the Study:

• To investigate the mechanisms of neuronal lamination during brain development.
• To model the interplay between neuronal migration and tissue growth.
• To understand how biochemical and mechanical factors regulate neuronal positioning.

Main Methods:

• Constructed a continuum model of neuronal migration.
• Incorporated signaling molecule-promoted migration.
• Included tissue growth due to neuron accumulation.
• Performed numerical analyses.

Main Results:

• Promoted neuronal migration is essential for lamination.
• Tissue growth provides necessary space for migrating neurons.
• The model successfully couples mechanical and biochemical aspects.
• Demonstrated the importance of both factors for successful neuronal layering.

Conclusions:

• Neuronal migration and tissue growth are coupled processes vital for cerebral morphogenesis.
• The developed model offers insights into the biophysical regulation of brain development.
• Understanding these mechanisms is key to studying neurodevelopmental disorders.