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Glial hyaluronate-binding protein expression in aggregating brain cell cultures
F Monnet-Tschudi1, M G Zurich, R Asher
1Institute of Physiology, University of Lausanne, Switzerland.
Developmental Neuroscience
|January 1, 1993
Summary
Glial hyaluronate-binding protein (GHAP) expression in rat brain cell cultures is primarily by glial cells and increases with development. Growth factors and cell interactions influence GHAP deposition in the extracellular matrix.
Area of Science:
- Neuroscience
- Cell Biology
- Biochemistry
Background:
- Glial hyaluronate-binding protein (GHAP) is crucial for the extracellular matrix.
- Understanding GHAP's role in brain development is essential.
Purpose of the Study:
- To analyze GHAP expression in fetal rat brain cell cultures.
- To investigate factors influencing GHAP deposition and its relation to glial cell development.
Main Methods:
- Immunofluorescence was used to detect GHAP in aggregating brain cell cultures.
- Glia-enriched and neuron-enriched cultures were compared.
- The effects of growth factors on GHAP expression were examined.
Main Results:
- GHAP immunoreactivity emerged after one week, coinciding with myelin basic protein.
- GHAP expression increased with culture development and was exclusively in glial cells.
- Epidermal growth factor, fibroblast growth factor, and platelet-derived growth factor modulated GHAP deposition.
- Three-dimensional culture structure and glial cell developmental stage influenced GHAP production.
Conclusions:
- Glial cells are the primary source of GHAP in developing brain cultures.
- Cell-cell interactions and glial cell maturity are critical for extracellular matrix formation involving GHAP.
- Growth factors play a regulatory role in GHAP expression during brain development.