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Hitting Them Where They Live: Targeting the Glioblastoma Perivascular Stem Cell Niche
Michael D Brooks1, Rajarshi Sengupta, Steven C Snyder
1Department of Pediatrics, Washington University School of Medicine, 660 South Euclid Ave. St Louis, MO 63110.
Abstract:
Glioblastoma growth potential and resistance to therapy is currently largely attributed to a subset of tumor cells with stem-like properties. If correct, this means that cure will not be possible without eradication of the stem cell fraction and abrogation of those mechanisms through which stem cell activity is induced and maintained. Glioblastoma stem cell functions appear to be non-cell autonomous and the consequence of tumor cell residence within specialized domains such as the perivascular stem cell niche. In this review we consider the multiple cellular constituents of the perivascular niche, the molecular mechanisms that support niche structure and function and the implications of the perivascular localization of stem cells for anti-angiogenic approaches to cure.
Insights
Glioblastoma stem cells drive tumor growth and therapy resistance. Targeting these cells within their perivascular niche is crucial for developing effective glioblastoma treatments.
Area of Science:
- Neuro-oncology
- Cancer Stem Cell Biology
- Tumor Microenvironment
Background:
- Glioblastoma (GBM) exhibits significant growth potential and resistance to therapy.
- This is largely attributed to a subset of tumor cells possessing stem-like properties.
- Understanding and targeting these glioblastoma stem cells (GSCs) is critical for therapeutic success.
Purpose of the Study:
- To review the role of glioblastoma stem cells (GSCs) in tumor growth and therapy resistance.
- To explore the concept of the perivascular stem cell niche in GBM.
- To discuss the implications for anti-angiogenic therapies.
Main Methods:
- Literature review focusing on glioblastoma stem cells.
- Analysis of the perivascular niche microenvironment.
- Discussion of molecular mechanisms maintaining GSC function.
Main Results:
- Glioblastoma stem cell functions are non-cell autonomous.
- GSC activity is influenced by their residence within specialized niches, particularly the perivascular niche.
- The cellular and molecular composition of the perivascular niche supports GSC maintenance.
Conclusions:
- Eradication of the glioblastoma stem cell fraction is necessary for a potential cure.
- Targeting mechanisms that induce and maintain GSC activity is essential.
- The perivascular niche's role highlights implications for anti-angiogenic strategies in glioblastoma treatment.
