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GSE76422
Homo sapiens
12 Downloadable Samples
Affymetrix Human Transcriptome Array 2.0 (hta20)
Description
Numerous pathways underlie brain invasion by tumors, a critical element underpinning recurrence and lethality in human glioblastomas (hGBMs). The identification of the master factors that elicit these pathways globally, driving invasion altogether, eludes us. We report that high expression levels of non-canonical Wnt5a characterize the most invasive gliomas, epitomize dismal prognosis and discriminate the most infiltrating mesenchymal hGBMs from proneural and classical ones. Exacerbated Wnt5a defines mesenchymal hGBM cells (Wnt5aHigh) possessing prototypical invasiveness and tumor-promoting stem-like characteristics (TPCs), but not their Wnt5aLow siblings. While inhibition of Wnt5a suppresses infiltration in mesenchymal hGBM TPCs, administration or over-expression of Wnt5a elicits the opposite effects, turning on infiltrative mesenchymal-like molecular programs in poorly motile, classical hGBM TPCs and Wnt5aLow mesenchymal TPCs, ex vivo and intracranially. Anti-Wnt5a antibodies or antagonist Wnt5a peptides block invasion, increasing survival in clinically relevant intracranial hGBM models. Wnt5a emerges as a master regulator in gliomatous invasion, endowing hGBM TPCs with archetypal, infiltratory transcriptional and functional profiles, providing a unique target to tackle brain invasion by hGBM cancer stem cells.
Publication Title
Wnt5a Drives an Invasive Phenotype in Human Glioblastoma Stem-like Cells.
Sample Metadata Fields
Specimen part
View Samples- Homo sapiens
- 585 Downloadable Samples
- Affymetrix Human Genome U133 Plus 2.0 Array (hgu133plus2)
Description
This SuperSeries is composed of the SubSeries listed below.
Publication Title
Gene expression classification of colon cancer into molecular subtypes: characterization, validation, and prognostic value.
Sample Metadata Fields
Sex
View Samples- Homo sapiens
- 585 Downloadable Samples
- Affymetrix Human Genome U133 Plus 2.0 Array (hgu133plus2)
Description
From a clinical and molecular perspective, colon cancer (CC) is a heterogeneous disease but to date no classification based on high-density transcriptome data has been established. The aim of this study was to build up a robust molecular classification ofmRNA expression profiles (Affymetrix U133Plus2) ofa large series of 443 CC and 19 non-tumoral colorectal mucosas, and to validate it on an independent serie of 123 CC and 906 public dataset.We identified and validated six molecular subtypes in this large cohort as a combination of multiple molecular processes that complement current disease stratification based on clinicopathological variables and molecular markers. The biological relevance of these subtypes was consolidated by significant differences in survival. These insights open new perspectives for improving prognostic models and targeted therapies.
Publication Title
Gene expression classification of colon cancer into molecular subtypes: characterization, validation, and prognostic value.
Sample Metadata Fields
Sex
View Samples- Homo sapiens
- 47 Downloadable Samples
- Affymetrix Human Genome U133 Plus 2.0 Array (hgu133plus2)
Description
Bone marrow monocytes are primarily committed to osteoclast formation. It is, however, unknown whether potential primary alterations are specifically present in bone marrow monocytes from patients with multiple myeloma, smoldering myeloma or monoclonal gammopathy of undetermined significance. We analyzed the immunophenotypic and transcriptional profiles of bone marrow CD14+ monocytes in a cohort of patients with different types of monoclonal gammopathies to identify alterations involved in myeloma-enhanced osteoclastogenesis. The number of bone marrow CD14+CD16+ cells was higher in patients with active myeloma than in those with smoldering myeloma or monoclonal gammopathy of undetermined significance. Interestingly, sorted bone marrow CD14+CD16+ cells from myeloma patients were more pro-osteoclastogenic than CD14+CD16-cells in cultures ex vivo Moreover, transcriptional analysis demonstrated that bone marrow CD14+ cells from patients with multiple myeloma (but neither monoclonal gammopathy of undetermined significance nor smoldering myeloma) significantly upregulated genes involved in osteoclast formation, including IL21RIL21R mRNA over-expression by bone marrow CD14+ cells was independent of the presence of interleukin-21. Consistently, interleukin-21 production by T cells as well as levels of interleukin-21 in the bone marrow were not significantly different among monoclonal gammopathies. Thereafter, we showed that IL21R over-expression in CD14+ cells increased osteoclast formation. Consistently, interleukin-21 receptor signaling inhibition by Janex 1 suppressed osteoclast differentiation from bone marrow CD14+ cells of myeloma patients. Our results indicate that bone marrow monocytes from multiple myeloma patients show distinct features compared to those from patients with indolent monoclonal gammopathies, supporting the role of IL21R over-expression by bone marrow CD14+ cells in enhanced osteoclast formation.
Publication Title
<i>IL21R</i> expressing CD14<sup>+</sup>CD16<sup>+</sup> monocytes expand in multiple myeloma patients leading to increased osteoclasts.
Sample Metadata Fields
Age, Specimen part
View Samples- Homo sapiens
- 8 Downloadable Samples
Illumina HiSeq 2500
Description
Purpose: The intergration of genetic and chemical screens identified SETD8 as a new druggable target in neuroblastoma tumor. The goal of this study is to evaluate the transcriptome profiling (RNA-seq) of Neuroblastoma cell lines after genetic and pharmacological inhibition of SETD8. Methods: mRNA profiles of NB cells after genetic and pharmacological inhibition of SETD8 were generated by deep sequencing in duplicate with Ilumina HiSeq2500 using Illumina TruSeq V4. The sequence reads were analyzed with software Trimmomatic, STAR and edgeR to determine the differetially expressed genes. qRT–PCR validation was performed using SYBR Green assays. Results: About 60 million sequence reads per sample were mapped to the human genome (hg19). Approximately 10% of the transcripts showed differential expression between the control and the treated samples, with a fold change =1.5 and p value <0.05. Altered expression of 12 genes was confirmed with qRT–PCR, demonstrating the high degree of sensitivity of the RNA-seq method. Hierarchical clustering of differentially expressed genes uncovered several as yet uncharacterized genes that may contribute to SETD8 function. Conclusions: Our study identifies SETD8 as a new therapeutic target in Neuroblastoma tumor. RNA-seq transcriptome analyses and functional studies revealed that SETD8 ablation rescued the proapoptotic and cell-cycle arrest functions of p53 through reactivation of the p53 canonical pathway by decreasing p53k382me1. Overall design: mRNA profiles of Neuroblastoma cells after genetic and pharmacological inhibition of SETD8 were generated by deep sequencing in duplicate with Ilumina HiSeq2500 using Illumina TruSeq V4.
Publication Title
Epigenetic siRNA and Chemical Screens Identify SETD8 Inhibition as a Therapeutic Strategy for p53 Activation in High-Risk Neuroblastoma.
Sample Metadata Fields
Specimen part, Subject
View Samples- Homo sapiens
- 11 Downloadable Samples
- Affymetrix Human Genome U133 Plus 2.0 Array (hgu133plus2)
Description
Background: The basic helix-loop-helix transcription factor TWIST1 (Twist) is involved in embryonic cell lineage determination and mesodermal differentiation. There is evidence to indicate that Twist expression plays a role in breast tumor formation and metastasis, but the role of Twist in dysregulating pathways that drive the metastatic cascade is unclear. Importantly, the genes and pathways dysregulated by Twist in cell lines and mouse models have not been validated against data obtained from patient samples.
Publication Title
Genomic pathways modulated by Twist in breast cancer.
Sample Metadata Fields
Specimen part
View Samples- Rattus norvegicus
- 52 Downloadable Samples
- IlluminaHiSeq2000
Description
We utilized RNA-Seq on rat Schwann (S16) cells to determine global gene expression. This information was generated as part of a larger effort to characterize cis-regulatory elements and global gene expression within Schwann cells. To achieve this, we generated RPKM values across two independent biological replicates. This dataset was also used to predict cis-regulatory element function on genes following CRISPR knockout studies. Overall design: Performed two technical replicates of RNA-Seq on two independent biological replicates of S16 cells
Publication Title
A genome-wide assessment of conserved SNP alleles reveals a panel of regulatory SNPs relevant to the peripheral nerve.
Sample Metadata Fields
No sample metadata fields
View Samples- Mus musculus
- 9 Downloadable Samples
- Affymetrix Mouse Genome 430 2.0 Array (mouse4302)
Description
Aeromonas caviae has been associated with human gastrointestinal disease. Strains of this species typically lack virulence factors (VFs) such as enterotoxins and hemolysins that are produced by other human pathogens of the Aeromonas genus. Microarray profiling of murine small intestinal extracts, 24 hours after oral infection with an A. caviae strain, provides evidence of a Th1 type immune response. A large number of gamma-interferon (-IFN) induced genes are up-regulated as well as several tumor necrosis factor-alpha (TNF-) transcripts. A. caviae has always been considered an opportunistic pathogen because it lacks obvious virulence factors. This current effort suggests A. caviae colonizes murine intestinal tract and causes what has been described by others as a dysregulatory cytokine response leading to an irritable bowel-like syndrome. This response would explain why a number of diarrheal waterborne outbreaks have been attributed to A. caviae even though it lacks obvious enteropathogenic properties.
Publication Title
Aeromonas caviae strain induces Th1 cytokine response in mouse intestinal tract.
Sample Metadata Fields
No sample metadata fields
View Samples- Rattus norvegicus
- 2 Downloadable Samples
- Affymetrix Rat Expression 230A Array (rae230a)
Description
Hypothesis: Overexpression of the GLUT1 facilitative glucose transporter, in A7r5 vascular smooth muscle cells, is sufficient and/or necessary to induce alterations in gene expression which influence apoptosis, growth, and proliferation.
Publication Title
GLUT1-induced cFLIP expression promotes proliferation and prevents apoptosis in vascular smooth muscle cells.
Sample Metadata Fields
Cell line
View Samples- Homo sapiens
- 22 Downloadable Samples
- Affymetrix Human Gene 1.0 ST Array (hugene10st)
Description
Mutations in BRCA1 and BRCA2 genes confer an increased lifetime risk for breast and ovarian cancer. Ovarian cancer risk can be decreased by risk-reducing salpingo-oophorectomy (RRSO). Studies on RRSO material have altered the paradigm of serous ovarian cancer pathogenesis.
Publication Title
Microarray analysis of differentially expressed genes in ovarian and fallopian tube epithelium from risk-reducing salpingo-oophorectomies.
Sample Metadata Fields
Specimen part, Subject
View Samples