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Updated: Jun 8, 2025
Isolation and Flow Cytometric Analysis of Glioma-infiltrating Peripheral Blood Mononuclear Cells
Published on: November 28, 2015
Cell death in glioblastoma and the central nervous system
Kyle Malone1,2,3,4, Eric LaCasse1,3, Shawn T Beug5,6,7,8
1Apoptosis Research Centre, Children's Hospital of Eastern Ontario Research Institute, 401 Smyth Road, Ottawa, ON, K1H 8L1, Canada.
Abstract:
Glioblastoma is the commonest and deadliest primary brain tumor. Glioblastoma is characterized by significant intra- and inter-tumoral heterogeneity, resistance to treatment and dismal prognoses despite decades of research in understanding its biological underpinnings. Encompassed within this heterogeneity and therapy resistance are severely dysregulated programmed cell death pathways. Glioblastomas recapitulate many neurodevelopmental and neural injury responses; in addition, glioblastoma cells are composed of multiple different transformed versions of CNS cell types. To obtain a greater understanding of the features underlying cell death regulation in glioblastoma, it is important to understand the control of cell death within the healthy CNS during homeostatic and neurodegenerative conditions. Herein, we review apoptotic control within neural stem cells, astrocytes, oligodendrocytes and neurons and compare them to glioblastoma apoptotic control. Specific focus is paid to the Inhibitor of Apoptosis proteins, which play key roles in neuroinflammation, CNS cell survival and gliomagenesis. This review will help in understanding glioblastoma as a transformed version of a heterogeneous organ composed of multiple varied cell types performing different functions and possessing different means of apoptotic control. Further, this review will help in developing more glioblastoma-specific treatment approaches and will better inform treatments looking at more direct brain delivery of therapeutic agents.
Insights
Glioblastoma, a deadly brain tumor, exhibits dysregulated cell death pathways due to its heterogeneity. Understanding neural cell death mechanisms is key to developing targeted glioblastoma treatments.
Area of Science:
- Neuroscience
- Oncology
- Cell Biology
Background:
- Glioblastoma is the most common and lethal primary brain tumor.
- Tumor heterogeneity and resistance to therapy are hallmarks of glioblastoma.
- Dysregulated programmed cell death pathways contribute to glioblastoma's aggressive nature.
Purpose of the Study:
- To understand cell death regulation in glioblastoma by examining healthy central nervous system (CNS) cell death.
- To compare apoptotic control in neural stem cells, astrocytes, oligodendrocytes, and neurons with that in glioblastoma.
- To highlight the role of Inhibitor of Apoptosis proteins in glioblastoma.
Main Methods:
- Review of literature on apoptotic control in healthy CNS cells.
- Comparison of apoptotic mechanisms in normal neural cells and glioblastoma cells.
- Focus on Inhibitor of Apoptosis proteins' function in neuroinflammation, cell survival, and gliomagenesis.
Main Results:
- Glioblastoma cells display dysregulated apoptotic control compared to healthy neural cells.
- Inhibitor of Apoptosis proteins are crucial in CNS cell survival, neuroinflammation, and glioblastoma development.
- Glioblastoma heterogeneity extends to its varied cell types and their distinct apoptotic mechanisms.
Conclusions:
- Glioblastoma represents a transformed, heterogeneous organ with diverse cell types and apoptotic controls.
- Understanding normal neural cell death pathways is vital for deciphering glioblastoma's biology.
- This review provides insights for developing glioblastoma-specific treatments and improving therapeutic brain delivery.
