Related Experiment Videos
Amyloid precursor protein is enriched in radial glia: implications for neuronal development
1Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, Maryland.
Journal of Neuroscience Research
|March 1, 1994
Summary
Amyloid precursor protein (APP) is found in fetal brain radial glial cells, suggesting a role in neuronal development. This contrasts with mature brains where APP is in neurons, not astrocytes, supporting its function in neurogenesis.
Area of Science:
- Neuroscience
- Cell Biology
- Developmental Biology
Background:
- Amyloid precursor protein (APP) is linked to neurodegenerative diseases like Alzheimer's.
- APP's in vivo function remains largely unknown.
- In vitro studies suggest APP supports neuronal adhesion and survival.
Purpose of the Study:
- To investigate the cellular distribution of APP in the developing mouse brain.
- To explore a potential role for APP in neuronal histogenesis.
Main Methods:
- Immunocytochemistry was used to detect APP.
- Confocal microscopy analyzed APP distribution.
- Studies were conducted on fetal and postnatal mouse brains.
Main Results:
- Abundant APP immunoreactivity was observed in radial glial cells in fetal and early postnatal mouse brains.
- In mature mouse brains, APP was found in neuronal perikarya and dendrites.
- APP was not detected in astrocytes in mature brains.
Conclusions:
- APP is expressed in radial glial cells during critical periods of brain development.
- These findings support a functional role for APP in radial glia-mediated neuronal histogenesis.
- APP's changing cellular localization suggests distinct roles in development versus mature brain function.