Molecular Mechanisms of Cadherin Function During Cortical Migration

Area of Science:

• Neuroscience
• Developmental Biology
• Cell Biology

Background:

• Neuronal migration is essential for forming the layered structure of the cerebral cortex.
• Cell adhesion molecules mediate crucial interactions between migrating neurons and their environment.
• Different neuron types, like projection neurons and interneurons, utilize distinct migratory pathways and cellular substrates.

Purpose of the Study:

• To review the cellular and molecular mechanisms of cadherin function in cortical neuronal migration.
• To highlight the role of CDH2 as a prominent cadherin in this process.
• To discuss recent advances in understanding how cadherin surface levels control adhesive strength.

Main Methods:

• Review of existing literature on neuronal migration and cell adhesion molecules.
• Focus on cadherin superfamily members, especially CDH2.
• Exploration of mechanisms regulating cadherin surface expression and adhesive properties.

Main Results:

• Cadherins, particularly CDH2, are critical for both radial and tangential neuronal migration.
• Interactions with radial glia and Cajal-Retzius cells are vital for projection neuron migration.
• Subpallial interneurons navigate complex routes involving additional cellular substrates.
• Regulation of cadherin surface levels influences adhesive strength and migration fidelity.

Conclusions:

• Cell-cell adhesion mediated by cadherins is indispensable for correct cortical neuron positioning.
• CDH2 plays a prominent role in ensuring successful neuronal migration.
• Further research into the regulation of cadherin adhesive strength offers insights into developmental processes.