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Updated: Aug 17, 2026
Isolation, Enrichment, and Maintenance of Medulloblastoma Stem Cells
Published on: September 1, 2010
A SHHecret target of relapsed medulloblastoma: Astrocytes
Zulekha A Qadeer1, William A Weiss1,2
1Department of Neurology and Helen Diller Family Comprehensive Cancer Center, University of California, San Francisco, San Francisco, CA.
Abstract:
In this issue of JEM, Guo et al. (2021. J. Exp. Med.https://doi.org/10.1084/jem.20202350) examine the importance of tumor-derived astrocytes in SHH-medulloblastoma recurrence. They show that tumor cells transdifferentiate to tumor-derived astrocytes via bone morphogenetic proteins and Sox9, which excitingly can be targeted by BMP inhibitors.
Insights
Tumor cells can become astrocytes, driving medulloblastoma recurrence. Targeting bone morphogenetic proteins (BMPs) with inhibitors may prevent this process.
Area of Science:
- Neuro-oncology
- Cancer biology
- Cellular plasticity
Background:
- Sonic hedgehog (SHH) medulloblastoma is a pediatric brain tumor.
- Tumor recurrence remains a significant challenge in medulloblastoma treatment.
- The role of tumor microenvironment components, like astrocytes, in recurrence is not fully understood.
Purpose of the Study:
- To investigate the role of tumor-derived astrocytes in SHH-medulloblastoma recurrence.
- To elucidate the molecular mechanisms driving the formation of tumor-derived astrocytes.
- To identify potential therapeutic targets for preventing medulloblastoma recurrence.
Main Methods:
- Analysis of tumor samples and cell lines from SHH-medulloblastoma models.
- Investigation of cellular transdifferentiation processes.
- Utilizing molecular biology techniques to study gene expression and protein pathways.
Main Results:
- Tumor cells were shown to transdifferentiate into tumor-derived astrocytes.
- This transdifferentiation process is mediated by bone morphogenetic proteins (BMPs) and Sox9.
- The study identified BMP signaling as a key pathway in astrocyte formation from tumor cells.
Conclusions:
- Tumor-derived astrocytes play a critical role in SHH-medulloblastoma recurrence.
- Targeting the BMP signaling pathway, potentially with BMP inhibitors, offers a promising therapeutic strategy.
- Understanding cellular plasticity is crucial for developing effective medulloblastoma treatments.
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