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Published on: March 8, 2010
Regulation of axonal outgrowth and pathfinding by integrin-ECM interactions
Jonathan P Myers1, Miguel Santiago-Medina, Timothy M Gomez
1Department of Neuroscience, Neuroscience Training Program, University of Wisconsin, Madison, Wisconsin 53706, USA.
Developmental Neurobiology
|June 30, 2011
Summary
Neurons assemble neural networks using extracellular matrix (ECM) proteins and integrin receptors. These interactions guide axon pathfinding and neural network formation by regulating cell adhesion and signaling.
Area of Science:
- Neuroscience
- Cell Biology
- Developmental Biology
Background:
- Developing neurons require precise guidance cues for functional neural network assembly.
- Extracellular matrix (ECM) proteins provide binding sites for neuronal integrin receptors.
- Integrin receptors link to cytosolic proteins, regulating cytoskeletal dynamics and cell adhesion.
Purpose of the Study:
- To review the current understanding of how ECM proteins and integrin receptors control neural network formation.
- To explore the role of integrin-based adhesion in axon pathfinding.
- To discuss the integration of biochemical signals by growth cones for nervous system assembly.
Main Methods:
- Review of existing scientific literature on neuronal guidance cues, ECM proteins, and integrin signaling.
- Analysis of studies investigating the molecular mechanisms of axon pathfinding and neural development.
- Synthesis of evidence linking ECM-integrin interactions to cytoskeletal regulation and cell adhesion.
Main Results:
- ECM proteins and neuronal integrin receptors are critical for neural network formation.
- Integrin-based adhesion is modulated by soluble growth factors and axon guidance cues.
- Interactions between activated receptors influence cell signaling and adhesion, impacting axon outgrowth and pathfinding.
Conclusions:
- The interplay between ECM proteins and integrin receptors is fundamental to proper nervous system assembly.
- Growth cone behavior is controlled by integrating diverse biochemical signals, including those mediated by ECM and integrins.
- Understanding these molecular interactions is key to deciphering neural development and function.
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