Abstract
Abstract


Glioblastoma (GBM), an incurable tumor, remains difficult to model and more importantly to treat due to its genetic/epigenetic heterogeneity and plasticity across cellular states. The ability of current tumor models to recapitulate the cellular states found in primary tumors remains unexplored. To address this issue, we compared single-cell RNA sequencing of tumor cells from 5 patients across four patient-specific glioblastoma stem cell (GSC)–derived model types, including glioma spheres, tumor organoids, glioblastoma cerebral organoids (GLICO), and patient-derived xenografts. We find that GSCs within the GLICO model are enriched for a neural progenitor–like cell subpopulation and recapitulate the cellular states and their plasticity found in the corresponding primary parental tumors. These data demonstrate how the contribution of a neuroanatomically accurate human microenvironment is critical and sufficient for recapitulating the cellular states found in human primary GBMs, a principle that may likely apply to other tumor models.


Significance:
It has been unclear how well different patient-derived GBM models are able to recreate the full heterogeneity of primary tumors. Here, we provide a complete transcriptomic characterization of the major model types. We show that the microenvironment is crucial for recapitulating GSC cellular states, highlighting the importance of tumor–host cell interactions.
See related commentary by Luo and Weiss, p. 907.
This article is highlighted in the In This Issue feature, p. 890
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Diffuse Glioma Heterogeneity and Its Therapeutic Implications

James G. Nicholson, Howard A. Fine · 2021

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Metrics
146
Citations
33
References
Details
Published
Jul 01, 2020
Vol/Issue
10(7)
Pages
964-979
Authors
Funding
NIH Award: 1DP1CA228040-01
Cite This Article
Allison R. Pine, Stefano M. Cirigliano, James G. Nicholson, et al. (2020). Tumor Microenvironment Is Critical for the Maintenance of Cellular States Found in Primary Glioblastomas. Cancer Discovery, 10(7), 964-979. https://doi.org/10.1158/2159-8290.cd-20-0057
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