Excitable Signal Transduction Networks in Directed Cell Migration

Area of Science:

• Cell Biology
• Biophysics

Background:

• Directed cell migration is fundamental in eukaryotic development and physiology.
• Dysregulation of cell motility contributes to diseases such as cancer.
• Cellular movement involves diverse propulsion mechanisms and directional sensing.

Purpose of the Study:

• To evaluate models of excitable networks governing directed cell migration.
• To outline critical experimental tests for these models.
• To discuss the implications of excitable network theory for understanding cell migration and cue integration.

Main Methods:

• Analysis of signal transduction pathways involved in cell motility.
• Modeling of excitable networks controlling cytoskeletal activity and protrusion formation.
• Evaluation of wave propagation dynamics and network activation thresholds.

Main Results:

• Cellular protrusions are driven by outward propagating signal transduction waves.
• Network excitability, characterized by all-or-nothing responses and wave propagation, governs cell migration.
• Modulating network activation thresholds alters protrusion size and migration patterns (gliding, oscillatory, amoeboid).

Conclusions:

• Excitable network models provide a framework for understanding directed cell migration.
• This perspective integrates diverse cellular components and extrinsic cues.
• Further research into these networks can illuminate disease mechanisms and therapeutic targets.