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GSE10247
Arabidopsis thaliana
6 Downloadable Samples
Affymetrix Arabidopsis ATH1 Genome Array (ath1121501)
Description
This sudy focuses on the identification of transcripts in the shoot phloem of the model plant Arabidopsis thaliana. Transcripts expressed in the phloem tissue (parenchyma cell, companion cell, sieve element) were excised by laser microdissection pressure catapulting (LMPC). These were compared with transcripts isolated from leaf phloem exudates by EDTA-chelation technique. Optimization of sample harvest resulted in RNA of high quality from both sources. Modifications of the RNA amplification procedure obtained RNA of sufficient yield and quality for microarray experiments. Microarrays (Affymetrix, ATH1) hybridized with RNA derived from phloem tissue by LMPC or phloem sap allowed us to differentiate between phloem located and mobile transcript species. The datasets provide a search criterion for phloem-based signals and will facilitate reverse genetic studies and forward genetic screens for phloem and long distance RNA signaling mutants.
Publication Title
Identification of Arabidopsis thaliana phloem RNAs provides a search criterion for phloem-based transcripts hidden in complex datasets of microarray experiments.
Sample Metadata Fields
No sample metadata fields
View Samples- Mus musculus
- 28 Downloadable Samples
Illumina HiSeq 1500
Description
While recent clinical studies demonstrate the promise of cancer immunotherapy, a barrier for broadening the clinical benefit is identifying how tumors locally suppress cytotoxic immunity. As an emerging mode of intercellular communication, exosomes secreted by malignant cells can deliver a complex payload of coding and non-coding RNA to cells within the tumor microenvironment. Here, we quantified the RNA payload within tumor-derived exosomes and the resulting dynamic transcriptomic response to cytotoxic T cells upon exosome delivery to better understand how tumor-derived exosomes can alter immune cell function. Exosomes derived from B16F0 melanoma cells were enriched for a subset of coding and non-coding RNAs that did not reflect the abundance in the parental cell. Upon exosome delivery, RNAseq revealed the dynamic changes in the transcriptome of CTLL2 cytotoxic T cells. In analyzing transiently co-expressed gene clusters, pathway enrichment suggested that the B16F0 exosomal payload altered mitochondrial respiration, which was confirmed independently, and upregulated genes associated with the Notch signaling pathway. Interestingly, exosomal miRNA appeared to have no systematic effect on downregulating target mRNA levels. Overall design: CTLL2 cells were grown in complete media for 24 hrs, and then stimulated with fresh B16F0 exosomes resuspended in PBS, to a final exosome concentration of 0.2 mg/ml. The transcriptome of untreated CTLL2 cells was assayed at 0, 0.5, 2, 4, and 8 hours after cells were placed in fresh media. There are 4 biological replicates at the 0 hour time point and 3 biological replicates at the 0.5, 2, 4, and 8 hour time points. The transcriptome of CTLL2 cells treated with B16F0 exosomes was assayed at 0.5, 2, 4, and 8 hours after addition of fresh media containing B16F0 exosomes. There were 3 biological replicates performed at each time point.
Publication Title
Exosomes derived from B16F0 melanoma cells alter the transcriptome of cytotoxic T cells that impacts mitochondrial respiration.
Sample Metadata Fields
Cell line, Treatment, Subject
View Samples- Homo sapiens
- 55 Downloadable Samples
- Affymetrix Human Gene 1.0 ST Array (hugene10st)
Description
This SuperSeries is composed of the SubSeries listed below.
Publication Title
Global DNA Hypomethylation in Epithelial Ovarian Cancer: Passive Demethylation and Association with Genomic Instability.
Sample Metadata Fields
Sex, Age, Specimen part, Disease stage
View Samples- Homo sapiens
- 55 Downloadable Samples
- Affymetrix Human Gene 1.0 ST Array (hugene10st)
Description
Comparison of DNA methylome, mRNA transcriptome, and copy number variation in tumors with global loss of DNA methylation to tumors with normal global methylation.
Publication Title
Global DNA Hypomethylation in Epithelial Ovarian Cancer: Passive Demethylation and Association with Genomic Instability.
Sample Metadata Fields
Sex, Age, Specimen part, Disease stage
View Samples- Mus musculus
- 12 Downloadable Samples
- Affymetrix Mouse Gene 1.0 ST Array (mogene10st)
Description
Dnmt3a catalyzes DNA methylation of gDNA, which contributes to the transriptional regulations of genes and genomic stability.
Publication Title
Methylation-independent repression of Dnmt3b contributes to oncogenic activity of Dnmt3a in mouse MYC-induced T-cell lymphomagenesis.
Sample Metadata Fields
Age, Specimen part
View Samples- Rattus norvegicus
- 22 Downloadable Samples
- Affymetrix Rat Expression 230A Array (rae230a)
Description
CNS autoimmunity is induced by autoreactive T cells reactive against CNS antigen. However how these T cells become able to transgress the blood brain barrier is not CNS autoimmunity is induced by autoreactive T cells reactive against CNS antigen. Here a gene expression profile of the pathogenic T cells in different functional states was performed.
Publication Title
T cells become licensed in the lung to enter the central nervous system.
Sample Metadata Fields
Sex, Specimen part
View Samples- Mus musculus
- 8 Downloadable Samples
- Illumina HiSeq 2500
Description
Cancer-associated skeletal muscle fatigue is a common problem in clinical oncology that is often associated with cancer cachexia, but is not exclusively observed in cachectic patients. The majority of breast cancer (BC) patients report muscle fatigue despite cachexia being relatively rare in this patient population. The clinically relevant phenotype of muscle fatigue in the absence of frank cachexia has no established model system and no approved therapeutic agents. Here, we utilize a breast cancer patient-derived orthotopic xenograft (BC-PDOX) model to recapitulate the human phenotype of tumor-induced muscle fatigue without muscle wasting, and utilized RNA-sequencing to identify pathways contributing to this clinically common phenomenon.
Publication Title
Human Breast Cancer Xenograft Model Implicates Peroxisome Proliferator-activated Receptor Signaling as Driver of Cancer-induced Muscle Fatigue.
Sample Metadata Fields
Sex, Specimen part
View Samples- Homo sapiens
- 29 Downloadable Samples
- Affymetrix Human Genome U133 Plus 2.0 Array (hgu133plus2)
Description
Our group has proposed that low-density granulocytes (LDGs) play an important role in lupus pathogenesis, as they can damage endothelial cells and synthesize increased levels of proinflammatory cytokines and type I interferons. LDGs have a heightened capacity to synthesize neutrophil extracellular traps (NETs). NETs from LDGs display increased levels of bactericidal and immunostimulatory proteins, such as the cathelicidin LL37 and externalize double-stranded DNA (dsDNA). Lupus netting LDGs have increased capacity to kill endothelial cells and expose IL-17. Through NETosis, lupus neutrophils stimulate plasmacytoid DCs to synthesize IFN-. Our results further expand the potential pathogenic role of aberrant lupus neutrophils through a NET-mediated effect.
Publication Title
Netting neutrophils induce endothelial damage, infiltrate tissues, and expose immunostimulatory molecules in systemic lupus erythematosus.
Sample Metadata Fields
Specimen part, Disease, Disease stage
View Samples- Mus musculus
- 11 Downloadable Samples
- Affymetrix Mouse Gene 1.0 ST Array (mogene10st)
Description
Dnmt3b is a DNA methytransferase which is an enzyme that methylated genomic DNA which contributes to genomic stability and transcriptional regulation.
Publication Title
Loss of Dnmt3b function upregulates the tumor modifier Ment and accelerates mouse lymphomagenesis.
Sample Metadata Fields
Specimen part
View Samples- Homo sapiens
- 43 Downloadable Samples
- NextSeq 500
Description
Resistance to platinum-based chemotherapy is a clinical challenge in the treatment of ovarian cancer (OC) and limits survival. Therefore, innovative drugs against platinum-resistance are urgently needed. Our therapeutic concept is based on the conjugation of two chemotherapeutic compounds to a monotherapeutic pro-drug, which is taken up by cancer cells and cleaved into active cytostatic metabolites. Here, we explore the activity of the duplex-prodrug 5-FdU-ECyd, covalently linking 2''-deoxy-5-fluorouridine (5-FdU) and 3''-C-ethynylcytidine (ECyd), on platinum-resistant OC cells. RNA-Sequencing was used for characterization of 5-FdU-ECyd treated platinum-sensitive A2780 and isogenic platinum-resistant A2780cis. Overall design: Platinum-sensitive A2780 and platinum resistant-cells A2780cis were treated with 5-FdU-Ecyd for 6h and 12h, there are also 6h and 12h untreated controls, all groups are in triplicates
Publication Title
The conjugated antimetabolite 5-FdU-ECyd and its cellular and molecular effects on platinum-sensitive vs. -resistant ovarian cancer cells <i>in vitro</i>.
Sample Metadata Fields
Cell line, Subject, Time
View Samples