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Related Experiment Videos

Guidepost cells.

J Palka1, K E Whitlock, M A Murray

  • 1Department of Zoology, University of Washington, Seattle 98195.

Current Opinion in Neurobiology
|February 1, 1992
PubMed
Summary
This summary is machine-generated.

Guidepost cells, crucial for axon guidance, are more widespread than previously thought. Expanding the definition reveals their function is context-dependent within the neural landscape.

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Area of Science:

  • Neuroscience
  • Developmental Biology
  • Cell Biology

Background:

  • The classical definition of guidepost cells, identified in grasshopper embryos, has limited their recognition in other biological systems.
  • Axon guidance is a complex process involving cell-cell interactions and the surrounding cellular environment.

Purpose of the Study:

  • To broaden the concept of guidepost cells beyond their classical definition.
  • To explore the broader role of specialized cells in axon guidance across different species and nervous system compartments.

Main Methods:

  • Comparative analysis of axon guidance mechanisms across various species.
  • Review and re-evaluation of existing literature on cell-cell interactions in neural development.

Main Results:

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  • The classical definition of guidepost cells is too narrow; their function is adaptable and context-dependent.
  • Expanded criteria reveal numerous examples of guidepost cell-like functions in both the peripheral and central nervous systems.
  • Growth cone-guidepost interactions share common mechanisms with other cell-cell signaling pathways.

Conclusions:

  • The concept of guidepost cells should be expanded to encompass their broader role in axon guidance.
  • Axon guidance is influenced by the entire cellular landscape, not just discrete guidepost cells.
  • Understanding these interactions offers insights into neural development and repair mechanisms.