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Gallus gallus
9 Downloadable Samples
Affymetrix Chicken Genome Array (chicken)
Description
A model of tumor metastasis based on v-src transformed immortalized cell lines was developed. The model consists of highly metastatic PR9692 cell line and a derived clone PR9692-E9 which has lost the metastatic abilities. Introduction of exogenous EGR1 gene into the non-metastasizing PR9692-E9 cells completely restores the metastatic potential. Revealed changes in gene expression provide insight into the molecular mechanisms contolling metastatic behavior of sarcoma cells.
Publication Title
The transcription factor EGR1 regulates metastatic potential of v-src transformed sarcoma cells.
Sample Metadata Fields
Cell line
View Samples- Gallus gallus
- 4 Downloadable Samples
- Affymetrix Chicken Genome Array (chicken)
Description
Metastatic progression is the leading cause of cancer mortality yet we have an incomplete view of the genetic events governing this process. An investigation was undertaken to explore the role of homeodemain only protein X (HOPX) in metastatic propensity and to identify other genes that may participate in metastasis development. The transcription factor HOPX was assessed for its possible involvement in metastasis formation using a knock-down induced by plasmid-delivered shRNAs. We used our original model system of chicken v-src-transformed tumour cell line PR9692 and its subclone (PR9692-E9) that have lost the ability to induce metastases after inoculation into syngeneic chickens without any significant change in primary tumour formation. We found that also a PR9692 cell line with decreased expression of HOPX gene (PR9692-shHOPX) lost its metastatic capacity in vivo (in chickens) and displayed a reduced cell migration in vitro. We compared the gene expression profiles of control (PR9692-shMOCK) and PR9692-shHOPX cells using oligonucleotide microarrays, assuming that genes with differential expression might be associated with metastasis. The data were compared with a previous study showing differences in gene expression between the PR9692 and PR9692-E9 cells. Bioinformatics was applied to identify gene expression patterns associated with metastasis. 234 genes were identified to show at least 2-fold change in both pairs of cell lines. The results were validated with real-time quantitative RT-PCR and the differential expression was confirmed for several genes. We were also able to demonstrate a significant change at protein level in case of three selected genes (NCAM, FOXG1, ITGA4). shRNA mediated knockdown of one of the identified HOPX regulated genes (integrin alpha 4) in the PR9692 cell line itself showed a marked inhibition of metastasis formation.
Publication Title
Downregulation of HOPX controls metastatic behavior in sarcoma cells and identifies genes associated with metastasis.
Sample Metadata Fields
Cell line
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GSE4737- Homo sapiens
- 2 Downloadable Samples
- Affymetrix Human Genome U133 Plus 2.0 Array (hgu133plus2)
Description
Summary:
Publication Title
HCaRG increases renal cell migration by a TGF-alpha autocrine loop mechanism.
Sample Metadata Fields
No sample metadata fields
View Samples- Mus musculus
- 8 Downloadable Samples
Illumina HiSeq 2000
Description
We use RNA-sequencing to generate gene expression profiles of fetal mammary cells that have been induced to overexpress Sox10. These data highlight multiple important molecular mechanisms that are altered in response to this perturbation, and offer a resource to probe the basis of the stem/progenitor and EMT-like functions that are mediated by Sox10 in mammary cells. Overall design: Expression profiling of fetal mammary cells that express ectopic levels of Sox10
Publication Title
Sox10 Regulates Stem/Progenitor and Mesenchymal Cell States in Mammary Epithelial Cells.
Sample Metadata Fields
No sample metadata fields
View Samples- Mus musculus
- 7 Downloadable Samples
- Illumina HiSeq 2000
Description
We use RNA-sequencing to generate gene expression profiles of fetal mammary cells with unique sorting strategies. These analyses reveal that sorting fetal mammary cells with Sox10 and EpCAM sorting markers provides a stroma-free fMaSC-enriched cell population. The gene expression profiling of these cells offers a resources to probe the molecular mechanisms that specify this unique cell state. Overall design: Examination of 2 different sorting strategies for fetal mammary cells
Publication Title
Sox10 Regulates Stem/Progenitor and Mesenchymal Cell States in Mammary Epithelial Cells.
Sample Metadata Fields
No sample metadata fields
View Samples GSE2555- Homo sapiens
- 4 Downloadable Samples
- Affymetrix Human Genome U133 Plus 2.0 Array (hgu133plus2), Affymetrix Human Genome U133A Array (hgu133a)
Description
HEK293 cells were transfected with control plasmid (pcDNAI/Neo;Invitrogen) or with the plasmid encoding HCaRG. Stable transfectants were synchronized and grown in the presence of 10% FBS for 48 h. Total RNAs were purified with the mini RNeasy kit (Qiagen).
Publication Title
HCaRG increases renal cell migration by a TGF-alpha autocrine loop mechanism.
Sample Metadata Fields
No sample metadata fields
View Samples- Mus musculus
- 23 Downloadable Samples
- Illumina HiSeq 2000
Description
Human lung adenocarcinoma exhibits a propensity for de-differentiation, which complicates diagnosis and treatment, and predicts for poor overall patient survival. In genetically engineered mouse (GEM) models of lung cancer, expression of the BRAFV600E oncoprotein kinase initiates the growth of benign tumors that retain characteristics of their cell of origin, alveolar type II (ATII) pneumocytes. Cooperating genetic alterations such as silencing of the PTEN tumor suppressor or expression of mutationally-activated PI3-kinase-a (PIK3CAH1047R) promote malignant progression of such benign tumors to malignant adenocarcinoma, though their effects on differentiation status are unknown. To address this in vivo, we generated a new conditional BrafCAT allele in which Cre-mediated recombination leads to expression of a bi-cistronic mRNA encoding both BRAFV600E and the tdTomato fluorescent protein. Using this model, we demonstrate that coincident expression of BRAFV600E and PIK3CAH1047R in ATII pneumocytes leads to rapid and widespread cell de-differentiation. Surprisingly, the combined effects of BRAFV600E and PIK3CAH1047R on ATII pneumocyte identity occurred without loss of expression of the lung lineage transcription factors NKX2.1, FOXA1, or FOXA2. Instead, we demonstrate a novel role of PGC1a in maintaining pneumocyte identity, which is lost upon PIK3CAH1047R expression. These findings provide additional insight into how two of the most commonly mutated growth factor signaling pathways contribute to the pathogenesis of lung adenocarcinoma. Overall design: BRAFV600E mutant mouse lung adenocarcinoma (n=6) vs BRAFV600E;PIK3CAH1047R mutant lung adenocarcinoma (n= 8), and BRAFV600E;PGC1aHET (n=5) vs BRAFV600E;PGC1aNULL tumors (n=4)
Publication Title
Mutationally-activated PI3'-kinase-α promotes de-differentiation of lung tumors initiated by the BRAF<sup>V600E</sup> oncoprotein kinase.
Sample Metadata Fields
Sex, Specimen part, Subject
View Samples- Mus musculus
- 6 Downloadable Samples
- Affymetrix Mouse Expression 430A Array (moe430a)
Description
The SCL and LMO1 oncogenic transcription factors reprogram thymocytes into self-renewing pre-leukemic stem cells (pre-LSCs). Here we report that SCL directly interacts with LMO1 to activate the transcription of a self-renewal program coordinated by LYL1.
Publication Title
SCL, LMO1 and Notch1 reprogram thymocytes into self-renewing cells.
Sample Metadata Fields
Age, Specimen part
View Samples- Drosophila melanogaster
- 4 Downloadable Samples
- Drosophila Gene 1.1 ST Array (drogene11st)
Description
The Drosophila TRIM-NHL protein Brain tumor (Brat) plays important roles during early embryogenesis, in cell fate decisions, during neurogenesis and in mature neurons. Brat is an RNA-binding protein and functions as translational repressor. However, which RNAs Brat regulates and how RNA-binding specificity is achieved, is unknown. Using RNA-Immunoprecipitation we identify Brat-bound mRNAs in Drosophila embryos and define a consensus binding motif.
Publication Title
The Crystal Structure of the NHL Domain in Complex with RNA Reveals the Molecular Basis of Drosophila Brain-Tumor-Mediated Gene Regulation.
Sample Metadata Fields
Specimen part
View Samples- Mus musculus
- 9 Downloadable Samples
- Illumina HiSeq 2000
Description
Background Alternative splicing (AS) is a central mechanism of genetic regulation which modifies the sequence of RNA transcripts in higher eukaryotes. AS has been shown to increase both the variability and diversity of the cellular proteome by changing the composition of resulting proteins through differential choice of exons to be included in mature mRNAs. Results In the present study, alterations to the global RNA splicing landscape of cellular genes upon viral infection were investigated through high-throughput RNA sequencing (RNA-seq) studies using mammalian reovirus as a model. Our study provides the first comprehensive portrait of global changes in the RNA splicing signatures that occur in eukaryotic cells following infection with a human virus. We identify modifications in the AS patterns of 240 cellular transcripts frequently involved in the regulation of gene expression and RNA metabolism. A significant number of the modified transcripts are also encoded by genes with important roles in viral infection/immunity. These modifications are expected to alter the functions of many cellular proteins. Finally, we used RT-PCR analysis in order to experimentally validate differential modifications in alternative splicing patterns that were observed through RNA-seq studies. Conclusion The present study demonstrated that viral infection can extensively modify the splicing patterns of numerous cellular transcripts. These findings provide additional insights into the complexity of virus-host interactions as these splice variants expand proteome diversity and function during viral infection. Finally, these data open new avenues of research for a better understanding of post-transcriptional events during virus infection and possible new targets toward the development of antiviral agents. Overall design: mRNAs were isolated from L929 mouse cell line, 14 hours after infection with T3D-S Reovirus or T3D-S Mutant reovirus at a MOI of 50. Control cells were uninfected. The resulting libraries were multiplexed and paired-end sequenced using Illumina HiSeq. Gene expression and alternative splicing were caracterized using Bowtie and RSEM.
Publication Title
Global Profiling of the Cellular Alternative RNA Splicing Landscape during Virus-Host Interactions.
Sample Metadata Fields
Specimen part, Cell line, Subject
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