GEO DataSets

(Submitter supplied) Introduction: Glioma stem cells isolated from human glioblastomas are resistant to radiation and cytotoxic chemotherapy and may drive tumor recurrence. Treatment efficacy may depend on the presence of glioma stem cells, expression of DNA repair enzymes such as methylguanine methyltransferase (MGMT), or transcriptome subtype. Methods: To model genetic alterations in the core signaling pathways of human glioblastoma, we induced conditional Rb knockout, Kras activation, and Pten deletion mutations in cortical murine astrocytes. more...

Organism:

Mus musculus

Type:

Genome binding/occupancy profiling by high throughput sequencing

Platform:

GPL19057

9 Samples

Download data: BW

(Submitter supplied) This SuperSeries is composed of the SubSeries listed below.

Organism:

Mus musculus

Type:

Expression profiling by high throughput sequencing; Genome binding/occupancy profiling by high throughput sequencing

Platform:

GPL19057

13 Samples

Download data: BW

(Submitter supplied) Introduction: Glioma stem cells isolated from human glioblastomas are resistant to radiation and cytotoxic chemotherapy and may drive tumor recurrence. Treatment efficacy may depend on the presence of glioma stem cells, expression of DNA repair enzymes such as methylguanine methyltransferase (MGMT), or transcriptome subtype. Methods: To model genetic alterations in the core signaling pathways of human glioblastoma, we induced conditional Rb knockout, Kras activation, and Pten deletion mutations in cortical murine astrocytes. more...

Organism:

Mus musculus

Type:

Expression profiling by high throughput sequencing

Platform:

GPL19057

4 Samples

Download data: TXT

(Submitter supplied) BACKGROUND: Glioma stem cells (GSCs) from human glioblastomas (GBMs) are resistant to radiation and chemotherapy and may drive recurrence. Treatment efficacy may depend on GSCs, expression of DNA repair enzymes such as methylguanine methyltransferase (MGMT), or transcriptome subtype. METHODS: To model genetic alterations in human GBM core signaling pathways, we induced Rb knockout, Kras activation, and Pten deletion mutations in cortical murine astrocytes. more...

Organism:

Mus musculus

Type:

Expression profiling by array

Platform:

GPL11202

37 Samples

Download data: TXT

(Submitter supplied) Here, we use a series of genetically-defined murine cortical astrocytes with conditional inactivation of Rb/Pten and activated Kras to systematically investigate the individual and combinatorial roles of these pathways during gliomagenesis. We show that genetic disruption of all three pathways, which frequently occurs in human GBM, leads to maximal in vitro growth, migration, and invasion and produces stem-like transcriptomal profiles similar to the proneural subtype of human GBM. more...

Organism:

Mus musculus

Type:

Expression profiling by array

Platform:

GPL7202

23 Samples

Download data: TXT

(Submitter supplied) consequences of astrocytes on GSCs, gene expression profiles generated from glioblastoma stem-like cells grown alone (mono-culture) and compared to those generated 48h after the initiation of co-culture with astrocytes We used microarrays show that astrocytes are capable to modify via a paracrine mechanism GSC gene expression and thus phenotype.

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL571

12 Samples

Download data: CEL, CHP

(Submitter supplied) Quiescent stem cells of glioblastoma (GBM), a malignant primary brain tumor, are potential sources for recurrence after therapy. However, the gene expression program underlying the physiology of GBM stem cells remains unclear. We have isolated quiescent GBM cells by engineering them with a knock-in H2B-GFP proliferation reporter and expanding them in a 3D tumor organoid model that mimics tumor heterogeneity. more...

Organism:

Homo sapiens

Type:

Expression profiling by high throughput sequencing

Platform:

GPL16791

12 Samples

Download data: CSV, TXT

(Submitter supplied) Glioma cells are sensitized to the alkylator temozolomide after exposure to IFN-beta. In glioma-initiating cells (GIC), IFN-beta alone reduces clonogenicity. We investigated differentially expressed genes with or without IFN exposure in either longterm glioma cells or GIC. We used microarrays to investigate differential gene regulation in glioma cells after exposure to either ddH20 or IFN-beta 300 IU/ml at 6 h or 24 h.

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL571

12 Samples

Download data: CEL

(Submitter supplied) Analysis of 80 glioblastoma specimen of patients treated within clinical trials and 4 samples of "normal" brain tissue (non-tumoral). The data was used to identify factors of resistance to a chemoradiation therapy protocol of radiotherapy and concomitant and adjuvant temozolomide (alkylating agent). Keywords: Disease state comparison

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL570

84 Samples

Download data: CEL

(Submitter supplied) Comparison of parental GSC (GSC-parental) with treatment resistant GSC clones survived 500uM TMZ treatment (GSC-500uM TMZ) We used microarrays to identify defense profiles of GSC-500uM TMZ

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL570

12 Samples

Download data: CEL

(Submitter supplied) We examined the transcriptional changes modulated by KDM1A inhibitor NCD-38 by performing global transcriptome analysis. Glioma Stem Cells (GSC10) were treated with either vehicle or NCD-38 for 24 h and the isolated RNA was utilized for RNA-seq analysis. Our results demonstrated that NCD-38 modulated several genes that are involved in unfolded protein response, endoplasmic reticulum stress pathway and NRF-2 mediated oxidative stress response.

Organism:

Homo sapiens

Type:

Expression profiling by high throughput sequencing

Platform:

GPL11154

4 Samples

Download data: TXT

(Submitter supplied) It is becoming better understood that radiation resistance in glioblastomas (GBMs) may be secondary to a self-renewing subpopulation of cells in the bulk tumor that form neurospheres in culture. This population has been referred to as Glioma stem cells (GSCs). One of the limitations regarding the use of GSCs is that these studies require fresh tumor biopsy samples obtained from patients, and can be extremely difficult to culture, propagate, and perform treatment-response assays. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL570

7 Samples

Download data: CEL

(Submitter supplied) Accumulating evidence suggests that glioma stem cells (GSCs), rare cells characterised by pluripotency and self-renewal, are responsible for glioblastoma (GBM) propagation, recurrence and resistance to therapy. Differentiation with bone morphogenic proteins (BMPs) is considered to be a promising approach to eliminate GSCs and sensitise glioma to chemotherapeutics. Epidermal growth factor receptor (EGFR) gene alterations are detected in more than a half of GBMs, however, the role of EGFR in chemoresistance of glioma stem cells remain elusive. more...

Organism:

Homo sapiens

Type:

Expression profiling by high throughput sequencing

Platform:

GPL18460

12 Samples

Download data: BEDGRAPH, TSV

(Submitter supplied) Comparison of treatment sensitive GSC clones (TSGC) with treatment resistant GSC clones (TRGC). We used microarrays to identify molecular signatures of TRGC (upregulated genes).

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL570

12 Samples

Download data: CEL, DCP

(Submitter supplied) Dilsulfiram together with Copper shows efficacy against patient derived Brain Tumor Initiating Cells (BTICs) in vitro and sensitizes BTICs to the DNA damaging agent TMZ. In addition, preclinical assessment found that DSF/Cu potentiaties the efficicacy of TMZ in vivo and prolongs survival. We used microarrays to detail the global profile of gene expression underlying DSF/Cu treatment in vitro and in vivo in BTICs.

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL15207

10 Samples

Download data: CEL

(Submitter supplied) Glioblastoma stem cells were infected with lentivirus expressing a non-targeting (gRNA-LacZ) or SOCS3 targeting gRNA to assess the function of SOCS3 in the stem cell compartment of Glioblastoma

Organism:

Homo sapiens

Type:

Expression profiling by high throughput sequencing

Platform:

GPL18573

6 Samples

Download data: TXT

(Submitter supplied) Glioma stem cells (GSCs) drive propagation and therapeutic resistance of glioblastomas, the most aggressive diffuse brain tumor. However, the molecular mechanisms that maintain the stemness and promote therapy resistance remain poorly understood. Here we study CD109 – STAT3 axis as crucial for the maintenance of stemness and tumorigenicity of GSCs and as a mediator of chemoresistance. Mechanistically, CD109 physically interacts with glycoprotein 130 (GP130) to promote activation of the IL-6/STAT3 pathway in GSCs. more...

Organism:

Homo sapiens

Type:

Expression profiling by high throughput sequencing

Platform:

GPL18573

20 Samples

Download data: XLSX

(Submitter supplied) We over-expressed an epigenetic regulator in a glioblastoma (GBM) primary culture from an adult patient. These GBM cells have cancer stem cell phenotypes, as they have self-renewal properties and tumor initiation potential when transplanted in immunocompromised mice. ATAC-seq was performed on cells over-expressing the epigenetic regulator and control cells expressing EGFP.

Organism:

Homo sapiens

Type:

Genome binding/occupancy profiling by high throughput sequencing; Other

Platform:

GPL16791

12 Samples

Download data: NARROWPEAK

(Submitter supplied) Mutations in the histone 3 variant H3.3 have been identified in one-third of pediatric glioblastomas (GBMs), but not in adult tumors. Here we show that H3.3 is a dynamic determinant of functional properties in adult GBM. H3.3 is repressed by mixed lineage leukemia 5 (MLL5) in self-renewing GBM cells. MLL5 is a global epigenetic repressor that orchestrates reorganization of chromatin structure by punctuating chromosomes with foci of compacted chromatin, favoring tumorigenic and self-renewing properties. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL17586

6 Samples

Download data: CEL, TXT

(Submitter supplied) Genome wide DNA methylation profiling of fourteen adult GBM primary cultures and their comparison to pediatric GBMs [GSE36278; GSE55712]

Organism:

Homo sapiens

Type:

Methylation profiling by genome tiling array

Platform:

GPL13534

14 Samples

Download data: IDAT, TXT