Related Experiment Videos
Altered expression of pp60c-src induced by peripheral nerve injury
M A Ignelzi1, S S Padilla, D E Warder
1Department of Biochemistry and Biophysics, University of North Carolina School of Medicine, Chapel Hill 27599.
The Journal of Comparative Neurology
|January 18, 1992
Summary
The src protein (pp60c-src) is reexpressed in regenerating axons after nerve injury, playing a role in nerve repair and growth cone guidance. This suggests its importance in both nerve development and regeneration.
Area of Science:
- Neuroscience
- Molecular Biology
- Cell Biology
Background:
- The src protein (pp60c-src) is crucial in developing neurons, primarily in growth cones.
- Its levels decrease as synapses mature.
Purpose of the Study:
- To investigate if pp60c-src is reexpressed in regenerating axons following nerve injury.
- To understand the role of pp60c-src in nerve repair.
Main Methods:
- Immunoblotting and immunocytochemical analyses were performed on adult chicken sciatic nerves post-crush injury.
- Expression levels and localization of pp60c-src were assessed.
Main Results:
- pp60c-src expression significantly increased during nerve repair, with distinct temporal and spatial patterns.
- Maximal increases were observed at the crush site (7 days) and distal nerve segments (11-21 days).
- pp60c-src was found in regenerating axons, non-neuronal cells, and motor/sensory neuron cell bodies; associated phosphotyrosine proteins also increased.
Conclusions:
- pp60c-src is reexpressed in regenerating axons, indicating a role in nerve repair.
- The findings suggest pp60c-src is involved in growth cone migration during both nerve development and regeneration.