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Updated: Aug 18, 2026
Isolation and Flow Cytometric Analysis of Glioma-infiltrating Peripheral Blood Mononuclear Cells
Published on: November 28, 2015
Flow-through cytometry of meningiomas and cultured meningioma cells
Abstract:
Flow cytometric techniques were used to compare the DNA content, size and viability of meningioma cells obtained directly from surgical specimens with the same cells after a period of culture. Cells isolated from the original meningiomas and cells in primary culture was similar with regard to size and DNA content, regardless of the histologic subclassification of tumor. The cell populations were essentially diploid with a small proportion of tetraploid cells. Viable cells were smaller and more uniform in size than the nonviable cells. An increase in the number of cells having an elevated DNA content was seen with cultures repeatedly transferred. The latter results suggest that any transfer of information from long-term cultured meningioma cells to the in vivo situation must be done with caution.
Insights
Meningioma cells from surgery and initial culture showed similar DNA content and size. Repeatedly cultured cells, however, exhibited increased DNA content, cautioning against direct application of long-term culture data to in vivo scenarios.
Area of Science:
- Neurosurgery
- Oncology
- Cell Biology
Background:
- Meningiomas are primary tumors of the central nervous system's meninges.
- Understanding meningioma cell characteristics is crucial for diagnosis and treatment.
- Cell culture is often used to study tumor biology, but can alter cell properties.
Purpose of the Study:
- To compare DNA content, size, and viability of primary meningioma cells versus cultured cells.
- To assess the impact of cell culture duration on meningioma cell characteristics.
- To evaluate potential changes in ploidy and cell morphology during serial subculturing.
Main Methods:
- Flow cytometry was employed to analyze cell populations.
- Direct surgical specimens and primary cell cultures were compared.
- Cells were assessed for DNA content, size (forward scatter), and viability.
Main Results:
- Primary meningioma cells and those in early culture exhibited similar size and DNA content across different histologic subtypes.
- Cell populations were predominantly diploid with a minor tetraploid fraction.
- Viability correlated with smaller cell size and greater uniformity.
- Repeated subculturing led to an increase in cells with elevated DNA content.
Conclusions:
- Initial cell culture preserves key characteristics of meningioma cells relevant to DNA content and size.
- Long-term cell culture, particularly with repeated transfers, can induce changes in DNA content.
- Caution is advised when extrapolating findings from long-term cultured meningioma cells to their in vivo behavior.
