Decidualization is a critical process for embryo implatation during which uterine stromal fibroblasts are transformed into large, epithelioid-like decidual cell. NOTCH1 is recepotor of Notch signaling that plays important roles for cell-cell communication, which involves gene regulatory mechanisms that control multiple cellular differentiation processes during embryonic and adult life.
Decreased Notch pathway signaling in the endometrium of women with endometriosis impairs decidualization.
Cell line
View SamplesAnalysis of gene expresssion altered upon knockdown of histone demethylase JMJD1A in human prostate cancer cells. The objective is to elucidate the transcriptional programs that are controlled by JMJD1A in human prostate cancer.
Regulation of c-Myc expression by the histone demethylase JMJD1A is essential for prostate cancer cell growth and survival.
Specimen part, Cell line
View SamplesUterine receptivity implies a dialogue between the hormonally primed maternal endometrium and the free-floating blastocyst. Endometrial stromal cells proliferate, avert apoptosis, and undergo decidualization in preparation for implantation; however, the molecular mechanisms that underlie differentiation into the decidual phenotype remain largely undefined. The Notch family of transmembrane receptors transduce extracellular signals responsible for cell survival, cell-to-cell communication, and trans-differentiation, all fundamental processes for decidualization and pregnancy. Using a murine artificial decidualization model, pharmacological inhibition of Notch signaling by gamma-secretase inhibition resulted in significantly decreased deciduoma. Furthermore, a progesterone receptor (PR)-Cre Notch1 bigenic (Notch1d/d) confirmed a Notch1-dependant hypomorphic decidual phenotype.
Notch1 mediates uterine stromal differentiation and is critical for complete decidualization in the mouse.
Sex, Age, Specimen part
View SamplesThis SuperSeries is composed of the SubSeries listed below.
c-Myc Antagonises the Transcriptional Activity of the Androgen Receptor in Prostate Cancer Affecting Key Gene Networks.
Cell line, Time
View SamplesProstate cancer is the most common non-cutaneous cancer in men. The androgen receptor (AR) a ligand-activated transcription factor, constitutes the main drug target for advanced cases of the disease. However, a variety of other transcription factors and signalling networks have been shown to be altered in patients and to influence AR activity. The oncogenic transcription factor c-Myc has been studied extensively in multiple malignancies, but its impact on AR activity in prostate cancer remains elusive. In this study we assessed the impact of clinically relevant levels of c-Myc overexpression on AR activity and transcriptional output. We found that c-Myc and the AR share a substantial amount of binding sites, which exhibit enhancer-like characteristics. Interestingly, c-Myc overexpression altered global AR chromatin occupancy and antagonised a subset of androgen-induced genes. Furthermore, c-Myc overexpression modified histone marks, most notably H3K4me1 and H3K27me3. Lastly, we validated the antagonistic relationship between c-Myc and two AR target genes, KLK3 and GNMT, in patient samples.
c-Myc Antagonises the Transcriptional Activity of the Androgen Receptor in Prostate Cancer Affecting Key Gene Networks.
Time
View SamplesArid1a has a critical role for modulating epithelial proliferation which is a critical requisite for fertility
ARID1A Is Essential for Endometrial Function during Early Pregnancy.
Sex, Specimen part
View SamplesDuring the invasive phase of implantation, trophoblasts and maternal decidual stromal cells secrete products that regulate trophoblast differentiation and migration into the maternal endometrium. Paracrine interactions between the extravillous trophoblast and the maternal decidua are important for successful embryonic implantation, including establishing the placental vasculature, anchoring the placenta to the uterine wall, and promoting immuno-acceptance of the fetal allograph. Global cross-talk between the trophoblast and the decidua has not been elucidated to date, and the current study used a functional genomics approach to investigate these paracrine interactions.
Decidual stromal cell response to paracrine signals from the trophoblast: amplification of immune and angiogenic modulators.
No sample metadata fields
View SamplesTo determine the global effects of ASCT2 inhibition, we used next generation sequencing to determine mRNA expression changes in PC-3 cells treated with BenSer or GPNA for 48 h. Overall design: Examination of two different ASCT2 inhibitors BenSer and GPNA in prostate cancer cell line PC-3.
Targeting ASCT2-mediated glutamine uptake blocks prostate cancer growth and tumour development.
No sample metadata fields
View SamplesThe ARV1-encoded protein mediates sterol transport from the endoplasmic reticulum (ER) to the plasma membrane. Yeast ARV1 mutants accumulate multiple lipids in the ER and are sensitive to pharmacological modulators of both sterol and sphingolipid metabolism. Using fluorescent and electron microscopy, we demonstrate sterol accumulation, subcellular membrane expansion, elevated lipid droplet formation and vacuolar fragmentation in ARV1 mutants. Motif-based regression analysis of ARV1 deletion transcription profiles indicates activation of Hac1p, an integral component of the UPR. Accordingly, we show constitutive splicing of HAC1 transcripts, induction of a UPR reporter and elevated expression of UPR targets in ARV1 mutants. IRE1, encoding the unfolded protein sensor in the ER lumen, exhibits a lethal genetic interaction with ARV1, indicating a viability requirement for the UPR in cells lacking ARV1. Surprisingly, ARV1 mutants expressing a variant of Ire1p defective in sensing unfolded proteins are viable. Moreover these strains also exhibit constitutive HAC1 splicing that interacts with DTT-mediated perturbation of protein folding. These data suggest a component of UPR induction in arv1? strains is distinct from protein misfolding. Decreased ARV1 expression in murine macrophages also results in UPR induction, particularly up-regulation of activating transcription factor-4, C/EBP homologous protein (CHOP) and apoptosis. Cholesterol loading or inhibition of cholesterol esterification further elevated CHOP expression in ARV1 knockdown cells. Thus, loss or down-regulation of ARV1 disturbs membrane and lipid homeostasis resulting in a disruption of ER integrity, one consequence of which is induction of the UPR.
Loss of subcellular lipid transport due to ARV1 deficiency disrupts organelle homeostasis and activates the unfolded protein response.
No sample metadata fields
View SamplesDetailed analysis of androgen regulated gene expression in the LNCaP prostate cancer cell line. Since androgens and the AR are known to be important for prostate cancer cell proliferation and invasion we aimed to identify androgen receptor (AR) regulated genes by combining this detailed Illumina beadarray study of androgen regulated gene expression with AR ChIP-sequencing data.
The androgen receptor fuels prostate cancer by regulating central metabolism and biosynthesis.
Specimen part, Time
View Samples