Filters
Technology
Platform
GSE41040
Homo sapiens
14 Downloadable Samples
Affymetrix Human Genome U133 Plus 2.0 Array (hgu133plus2)
Description
Epigenetic and genetic regulations are sometimes considered as separate mechanisms that influence gene expression and phenotypes. However, there are DNA sequence variants in epigenetic regulators that could affect gene regulation. The histone demethylase, KDM4C, promotes transcriptional activation by removing the repressive histone mark, tri-methylation of lysine 9 of histone H3 (H3K9me3), from its target genes. In this study, we uncovered cis-acting DNA sequence variants in KDM4C that contribute to individual differences in its expression. Utilizing this natural variation, we performed genetic analyses in B-cells in order to identify target genes that are regulated by KDM4C.
Publication Title
Natural variation in the histone demethylase, KDM4C, influences expression levels of specific genes including those that affect cell growth.
Sample Metadata Fields
Specimen part
View Samples- Homo sapiens
- 3 Downloadable Samples
- Affymetrix Human Genome U133A Array (hgu133a)
Description
To study the gene expression changes in mesenchymal stem cells from bone marrow stroma (MSCs) during in vitro expansion (from low density), passage 1 MSC were grown in culture for 15 days with medium change every 2-3 days. Samples for microarrays were taken at day 5 (early log-phase), 10 (late log-phase) and 15 (stationary phase). The data was queried for expression changes in Wnt signaling molecules and cell surface markers. Several components of the canonical Wnt signaling pathway were expressed, including Dkk-1; Wnt-5a; alpha-catenin; beta-catenin; frizzled 1, 4, 6, and 7; disheveled; glycogen synthetase kinase 3 beta; and glycogen synthetase kinase 3 alpha. In addition, the expression of over 10 cell surface transcripts decreased and an almost equal number increased during expansion. The two of the transcripts with the largest decreases coded for proteins previously shown to be linked to cell motility and tumor progression: PODXL, and alpha6-integrin (CD49f). As the cultures expanded, the largest increase was for mRNA for the cell adhesion protein VCAM-1. To study the gene expression changes in more detail, real-time RT-PCR, RT-PCR, ELISAs, FACS, and western blotting were performed for additional MSC donors. The results demonstrated dramatic changes in the transcriptome of MSCs during in vitro expansion.
Publication Title
The Wnt signaling inhibitor dickkopf-1 is required for reentry into the cell cycle of human adult stem cells from bone marrow.
Sample Metadata Fields
No sample metadata fields
View Samples- Mus musculus
- 2 Downloadable Samples
- Affymetrix Mouse Genome 430 2.0 Array (mouse4302)
Description
Canonical Wnt signaling controls proliferation and differentiation of osteogenic progenitor cells, and tumor-derived secretion of the Wnt antagonist Dickkopf-1 (Dkk1) is correlated with osteolyses and metastasis in many bone malignancies. However, the role of Dkk1 in the oncogenesis of primary osteosarcoma (OS) remains unexplored. Here, we over-expressed Dkk1 in the OS cell line MOS-J. Contrary to expectations, Dkk1 had autocrine effects on MOSJ cells in that it increased proliferation and resistance to metabolic stress in vitro. In vivo, Dkk1 expressing MOS-J cells formed larger and more destructive tumors than controls. These effects were attributed in part to up-regulation of the stress response enzyme and cancer stem cell marker aldehyde-dehydrogenase-1 (ALDH1) through Jun-N-terminal kinase signaling. This is the first report linking Dkk1 to tumor stress resistance, further supporting the targeting of Dkk1 not only to prevent and treat osteolytic bone lesions but also to reduce numbers of stress-resistant tumor cells.
Publication Title
An unexpected role for a Wnt-inhibitor: Dickkopf-1 triggers a novel cancer survival mechanism through modulation of aldehyde-dehydrogenase-1 activity.
Sample Metadata Fields
Specimen part, Cell line
View Samples- Glycine max
- 26 Downloadable Samples
- Affymetrix Soybean Genome Array (soybean)
Description
Affymetrix soybean genome arrays were used to identify genes differentially expressed in the immune resistance response at 6, 12, 24, and 48 hours after inoculation with Phakopsora pachyrhizi isolates TW72-1 or HW94-1
Publication Title
A microarray analysis for differential gene expression in the soybean genome using Bioconductor and R.
Sample Metadata Fields
No sample metadata fields
View Samples- Mus musculus
- 4 Downloadable Samples
Illumina HiSeq 2000
Description
Hippo signalling has been implicated as a key regulator of tissue regeneration. In the intestine, ex vivo organoid cultures model aspects of crypt epithelial regeneration. Therefore in order to uncover the Yap regulated transcriptional programs during crypt regeneration we performed RNA-sequencing of Yap wt and Yap deficient organoids, as well as organoids inducibly expressing Yap. Overall design: Yap loss of function organoids were harvested from Yapfl/fl;VillinCre mice (Yap-/-). In addition, we developed Yap overexpressing organoids by generating a doxycycline-inducible wild-type Yap transgenic line under the control of a Cre driven reverse tetracycline transactivator (rtTA), referred to here as YapTg. Organoids were seeded on day 0 from whole crypts isolated from Yap+/D, YapD/D, YapTg mice and cultured for 24 hours at which time they were harvested for transcriptome analysis by RNAseq.
Publication Title
Yap-dependent reprogramming of Lgr5(+) stem cells drives intestinal regeneration and cancer.
Sample Metadata Fields
No sample metadata fields
View Samples- Homo sapiens
- 28 Downloadable Samples
- Affymetrix Human Genome U95A Array (hgu95a)
Description
Disuse atrophy is a common clinical phenomenon which significantly impacts muscle function and activities of daily living. In this study, we did expression profiling to identify transcriptional pathways associated with muscle remodeling in a clinical model of disuse.
Publication Title
Transcriptional pathways associated with skeletal muscle disuse atrophy in humans.
Sample Metadata Fields
Disease, Disease stage
View Samples- Mus musculus
- 2 Downloadable Samples
- Illumina HiSeq 2500
Description
WT vs. Spp1-/- MPPs showed distict patterns in tgene transcription profiles when analyzed with single cell sequencing Overall design: MPPs from mice treated with thioglycollate were FACS-sorted, and gene expression profiles were compared between WT vs. Spp1-/- cells.
Publication Title
Skewing of the population balance of lymphoid and myeloid cells by secreted and intracellular osteopontin.
Sample Metadata Fields
Subject
View Samples- Mus musculus
- 14 Downloadable Samples
- Illumina Genome Analyzer IIx
Description
RNA-Seq analysis was performed to define the associated changes in gene expression of skeletal muscle treated with follistatin Overall design: Skeletal muscle mRNA profiles from follistatin and control treated tibialis anterior muscles. Acute (3 day treatment, 3 control and 4 follistatin replicates) and chronic (7or 14 day treatment, 3 control and 4 follistatin replicates) timepoints were analysed.
Publication Title
Integrated expression analysis of muscle hypertrophy identifies <i>Asb2</i> as a negative regulator of muscle mass.
Sample Metadata Fields
Specimen part, Cell line, Treatment, Subject
View Samples- Homo sapiens
- 18 Downloadable Samples
- Affymetrix Human Gene 1.0 ST Array (hugene10st)
Description
The Hippo pathway is an emerging signaling cascade involved in the regulation of organ size control. It consists of evolutionally conserved protein kinases that are sequentially phosphorylated and activated. The active Hippo pathway subsequently phosphorylates a transcription coactivator, YAP, which precludes its nuclear localization and transcriptional activation. Identification of transcriptional targets of YAP in diverse cellular contexts is therefore critical to the understanding of the molecular mechanisms in which the Hippo pathway restricts tissue growth.
Publication Title
Hippo signaling regulates microprocessor and links cell-density-dependent miRNA biogenesis to cancer.
Sample Metadata Fields
Specimen part
View Samples- Mus musculus
- 14 Downloadable Samples
- Illumina Genome Analyzer II
Description
No description.
Publication Title
Mili and Miwi target RNA repertoire reveals piRNA biogenesis and function of Miwi in spermiogenesis.
Sample Metadata Fields
Cell line, Subject
View Samples