Neuron-astrocyte signaling in the development and plasticity of neural circuits
- PMID: 18635944
- DOI: 10.1159/000123038
Neuron-astrocyte signaling in the development and plasticity of neural circuits
Abstract
Emerging evidence indicates that signaling between perisynaptic astrocytes and neurons at the tripartite synapse plays an important role during the critical period when neural circuits are formed and refined. Cross-talk between astrocytes and neurons during development mediates synaptogenesis, synapse elimination and structural plasticity through a variety of secreted and contact-dependent signals. Recent live imaging studies reveal a dynamic and cooperative interplay between astrocytes and neurons at synapses that is guided by a variety of molecular cues. A unifying theme from these recent findings is that astrocytes can promote the development and plasticity of synaptic circuits. Insight into the molecular mechanisms by which astrocytes regulate the wiring of the brain during development could lead to new therapeutic strategies to promote repair and rewiring of neural circuits in the mature brain following CNS injury and neurodegenerative disease.
Copyright 2008 S. Karger AG, Basel.
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