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Immunocytochemical characterization of primary glial cell cultures from normal adult human brain
J Newcombe1, A Meeson, M L Cuzner
1Department of Neurochemistry, Institute of Neurology, London, England.
Abstract:
Primary cultures were established from autopsy or biopsy samples of normal adult human brain and characterized by immunocytochemical techniques. Initially, macrophages were the predominant cell type adhering to the substratum, but as their number fell that of glial cells increased. Oligodendrocytes comprised 30% of the glial population in white matter cultures, and their perikarya and elongated processes were immunostained with antibodies directed against galactocerebroside and four myelin proteins. In white and grey matter cultures, process-bearing astrocytes and small numbers of polygonal astrocytes were stained with antibodies against glial fibrillary acidic protein and glutamine synthetase. Fibroblasts started to appear at 3 weeks and proliferated to form a monolayer beneath glial cells by 5 weeks. Glia began to die in the 6th week. These primary cell cultures of white or grey matter can be used to study the properties of glial cells from normal or pathological adult human brain.
Insights
Primary human brain cell cultures reveal glial cell dynamics, including oligodendrocytes and astrocytes, over time. These cultures offer a model for studying glial cells in normal and pathological adult human brain tissue.
Area of Science:
- Neuroscience
- Cell Biology
Background:
- Establishing primary human brain cell cultures is crucial for understanding glial cell behavior.
- Characterizing glial cell populations in vitro presents unique challenges.
Purpose of the Study:
- To establish and characterize primary cell cultures from normal adult human brain.
- To investigate the temporal dynamics of glial cells, including astrocytes and oligodendrocytes, in these cultures.
- To assess the utility of these cultures for studying glial cell properties.
Main Methods:
- Primary cultures were derived from autopsy or biopsy samples of adult human brain.
- Immunocytochemical techniques were employed to identify and characterize cell types.
- Antibodies against galactocerebroside, myelin proteins, glial fibrillary acidic protein, and glutamine synthetase were used.
Main Results:
- Macrophages were initially predominant, followed by an increase in glial cells.
- Oligodendrocytes constituted 30% of glial cells in white matter cultures.
- Astrocytes (both process-bearing and polygonal) were identified in white and grey matter cultures.
- Fibroblasts appeared by week 3, forming a monolayer by week 5, and glial cells began to decline by week 6.
Conclusions:
- Primary human brain cell cultures can be successfully established and characterized.
- These cultures exhibit distinct temporal changes in cell populations, including glial cells.
- The established cultures serve as a valuable model for investigating glial cell biology in normal and pathological adult human brain.