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Updated: Jun 27, 2026

Isolation and Flow Cytometric Analysis of Glioma-infiltrating Peripheral Blood Mononuclear Cells
Published on: November 28, 2015
Notch Overexpression Potentiates Interferon Signaling in Glioma Cells
Marina Giannaki1, Elena Parmigiani1, Karin Burger1
1Embryology and Stem Cell Biology, Department of Biomedicine, University of Basel, Mattenstrasse 28, 4058 Basel, Switzerland.
Activating the Notch pathway enhances interferon (IFN) signaling in glioma cells, boosting anti-tumor immunity. This approach promotes cytotoxic T lymphocyte recruitment and reduces tumor growth, offering a new strategy for glioma treatment.
Area of Science:
- Immunology
- Oncology
- Molecular Biology
Background:
- Interferons (IFNs) are crucial for anti-cancer immunity.
- Previous studies linked Notch pathway disruption to impaired IFN signaling and immune evasion in glioma.
- The interplay between Notch and IFN pathways in glioma immune evasion requires further investigation.
Purpose of the Study:
- To investigate if activating the Notch pathway, specifically the Notch intracellular domain (NICD), can enhance interferon responses in glioma cells.
- To explore the potential of leveraging the Notch-IFN signaling axis to overcome immune evasion in glioma.
Main Methods:
- Overexpression (OE) of NICD in U-251MG human glioma cells using a doxycycline-inducible system.
- Assessment of STAT1 phosphorylation upon IFNγ or IFNα stimulation.
- Analysis of IRF1, CXCL9, and CXCL10 gene expression.
- In vivo studies in a murine glioma model to evaluate T cell recruitment and tumor proliferation.
Main Results:
- NICD overexpression significantly potentiated STAT1 phosphorylation in response to IFNγ and IFNα.
- NICD-OE induced the expression of the transcription factor IRF1.
- NICD-OE enhanced IFNγ-dependent transcription of CXCL9 and CXCL10, key cytokines for T cell function.
- In vivo, NICD-OE promoted cytotoxic T lymphocyte infiltration and reduced glioma tumor cell proliferation.
Conclusions:
- The Notch and Interferon signaling pathways interact to modulate glioma immunity.
- Overexpression of NICD enhances glioma cells' response to interferons, upregulating immune-modulatory genes.
- This Notch-IFN signaling network represents a potential therapeutic target for enhancing anti-tumor immunity in glioma.
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