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Related Experiment Videos

How do retinal axons find their targets in the developing brain?

M Hankin1, R Lund

  • 1Dept of Neurobiology, Anatomy and Cell Science, School of Medicine, University of Pittsburgh.

Trends in Neurosciences
|June 1, 1991
PubMed
Summary
This summary is machine-generated.

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Retinal ganglion cell axon growth is controlled by both the surrounding environment and target-derived signals. In vivo transplantation studies reveal this dual control mechanism is crucial for optic nerve development.

Area of Science:

  • Neuroscience
  • Developmental Biology
  • Cell Biology

Background:

  • Retinal ganglion cell (RGC) survival and neurite outgrowth in vitro depend on substrate composition and diffusible factors.
  • Interactions between these factors are increasingly recognized in cell culture.
  • In vitro conditions may not fully replicate the in vivo microenvironment for neurite growth.

Purpose of the Study:

  • To investigate the in vivo control mechanisms of optic axon growth.
  • To compare in vitro findings with the natural microenvironment of developing neurites.
  • To explore the roles of substrate-dependent and target-derived factors in vivo.

Main Methods:

  • Utilized transplantation techniques in vivo.
  • Examined the growth of optic axons within their natural microenvironment.

Related Experiment Videos

  • Assessed substrate-dependent and target-derived influences on axon development.

    • Main Results:

    • Provided evidence for a dual control system governing optic axon growth in vivo.
    • Demonstrated that both substrate and target-derived factors influence neurite extension.
    • Showed parallels between in vitro and in vivo findings regarding growth control.

    Conclusions:

    • Optic axon growth in vivo is regulated by a combination of environmental substrates and signals from the target.
    • Transplantation studies offer valuable insights into normal neural development processes.
    • The duality of control mechanisms is essential for proper optic nerve formation.