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Isolation and characterization of adult microglial cells and oligodendrocytes derived from postmortem human brain
C J De Groot1, L Montagne, I Janssen
1Research Institute Neurosciences Vrije Universiteit Amsterdam, Department of Pathology, Division of Neuropathology, Academic Hospital, Vrije Universiteit, PO Box 7057, 1007 MB, Amsterdam, The Netherlands. cja.degroot@azvu.nl
Abstract:
The present study provides a detailed description of the simultaneous establishment and immunocytochemical characterization of highly enriched human adult microglial cell cultures as well as of oligodendrocyte cultures. For this study, brain tissue specimens were collected at autopsy with relatively short postmortem times (3-9 h) from various regions of the CNS of Alzheimer's disease, Pick's disease and non-demented control cases. Although methods to isolate viable glial cells from human adult brain tissue have been described, these human brain specimens were often derived from surgical resections, i.e., in order to treat intractable epilepsy, brain tumors or cardiovascular diseases involving the brain. However, for the study of many neurological disorders, surgical material is not available. Furthermore, for obvious reasons, there is a limit to the number of central nervous system (CNS) regions from which (enough) tissue can be obtained at surgery. The adherent primary microglial cells, isolated according to the here described procedures consisted of proliferating, phagocytotic cells that expressed various microglia/macrophage-specific markers as judged by immunocytochemical analysis. Non-adherent cells isolated from the same brain tissue samples expressed oligodendrocyte-specific markers. The current described culture system may provide a valuable tool in studying human CNS biology and disease.
Insights
Researchers developed a new method to culture human adult microglia and oligodendrocytes from autopsy brain tissue. This technique allows for the study of glial cells in neurological diseases using postmortem samples.
Area of Science:
- Neuroscience
- Cell Biology
- Immunology
Background:
- Established methods for isolating human glial cells often rely on surgical tissue, limiting availability and regional diversity.
- Studying glial cells in neurological disorders like Alzheimer's disease and Pick's disease requires accessible human brain tissue models.
Purpose of the Study:
- To establish and characterize highly enriched cultures of human adult microglia and oligodendrocytes simultaneously.
- To provide a reliable method for obtaining glial cells from postmortem human brain tissue for research.
Main Methods:
- Collection of autopsy brain tissue (3-9 h postmortem) from Alzheimer's disease, Pick's disease, and non-demented control cases.
- Isolation and immunocytochemical characterization of adherent microglial cells and non-adherent oligodendrocyte precursor cells.
- Utilizing established protocols for glial cell culture and marker analysis.
Main Results:
- Successfully established proliferating, phagocytotic microglial cultures expressing microglia/macrophage-specific markers.
- Isolated non-adherent cells expressing oligodendrocyte-specific markers from the same tissue.
- Demonstrated the feasibility of culturing distinct glial cell types from postmortem human brain.
Conclusions:
- The described culture system enables the simultaneous isolation of human adult microglia and oligodendrocytes.
- This method overcomes limitations of using surgical tissue, offering a valuable tool for studying human central nervous system (CNS) biology and disease.
- Facilitates research into glial cell function and dysfunction in neurodegenerative conditions.