Human Gene Set: GUENTHER_GROWTH_SPHERICAL_VS_ADHERENT_DN


Standard name GUENTHER_GROWTH_SPHERICAL_VS_ADHERENT_DN
Systematic name M1511
Brief description Genes down-regulated in glioblastoma cell lines displaying spherical growth (cluster-1) compared to those displaying semiadherent or adherent growth phenotype (cluster-2).
Full description or abstract Tumor cells with stem cell-like properties can be cultured from human glioblastomas by using conditions that select for the expansion of neural stem cells. We generated cell lines from glioblastoma specimens with the goal to obtain model systems for glioma stem cell biology. Unsupervised analysis of the expression profiles of nine cell lines established under neural stem cell conditions yielded two distinct clusters. Four cell lines were characterized by the expression of neurodevelopmental genes. They showed a multipotent differentiation profile along neuronal, astroglial and oligodendroglial lineages, grew spherically in vitro, expressed CD133 and formed highly invasive tumors in vivo. The other five cell lines shared expression signatures enriched for extracellular matrix-related genes, had a more restricted differentiation capacity, contained no or fewer CD133+ cells, grew semiadherent or adherent in vitro and displayed reduced tumorigenicity and invasion in vivo. Our findings show that stable, multipotent glioblastoma cell lines with a full stem-like phenotype express neurodevelopmental genes as a distinctive feature, which may offer therapeutic targeting opportunities. The generation of another distinct cluster of cell lines showing similarly homogeneous profiling but restricted stem cell properties suggests that different phenotypes exist, each of which may lead to the typical appearance of glioblastoma.
Collection C2: Curated
      CGP: Chemical and Genetic Perturbations
Source publication Pubmed 18037961   Authors: Günther HS,Schmidt NO,Phillips HS,Kemming D,Kharbanda S,Soriano R,Modrusan Z,Meissner H,Westphal M,Lamszus K
Exact source Table 2S, 3S: down in cluster-1, up in cluster-2
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Source species Homo sapiens
Contributed by Jessica Robertson (MSigDB Team)
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identifier namespace		 AFFY_HG_U133
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Version history 3.0: First introduced

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