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Related Experiment Videos

Glial control of neuronal development.

G Lemke1

  • 1Molecular Neurobiology Laboratory, The Salk Institute, La Jolla, California 92037, USA. lemke@salk.edu

Annual Review of Neuroscience
|April 3, 2001
PubMed
Summary

Nervous system development relies on reciprocal signaling between developing neurons and glial cells. This essential, interdependent communication guides cell survival, fate commitment, and axon guidance for proper neural network formation.

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Area of Science:

  • Neuroscience
  • Developmental Biology
  • Cell Biology

Background:

  • Glial cells and neurons engage in critical reciprocal signaling during nervous system development.
  • This interaction is vital even before cell types are fully differentiated.
  • Glial cells influence neuronal survival, contingent on neuronal signals for glial fate and growth factor production.

Purpose of the Study:

  • To elucidate the fundamental principles of reciprocal signaling between developing neurons and glia.
  • To highlight the roles of specific signaling pathways and molecules in this interactive process.
  • To emphasize the interdependent nature of neuronal and glial communication in establishing neural networks.

Main Methods:

  • Comparative analysis across model organisms (Drosophila, mammals).
  • Investigation of key molecular players like neuregulin-1 and ErbB receptors.
  • Examination of glial factors involved in axon guidance (netrin, slit) and transcription factors.

Main Results:

  • Glial cell-mediated neuronal survival is dependent on prior neuronal signaling.
  • Neuregulin-1/ErbB signaling is crucial for glial fate and trophic factor expression in mammals.
  • Glial cues and transcription factors regulate pioneer axon guidance at the neural midline.

Conclusions:

  • Reciprocal signaling is a defining principle in nervous system development.
  • Mutually reinforced and dependent signaling networks between neurons and glia are essential.
  • This interactive communication underpins the formation of functional neural connections.

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