Expression data from human amnion mesenchymal cells treated with interleukin-1-beta for 1hr and 8hr
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ABSTRACT:
ORGANISM(S): Homo sapiens
PROVIDER: GSE26315 | GEO | 2011/06/02
SECONDARY ACCESSION(S): PRJNA136761
REPOSITORIES: GEO
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Project description:Premature birth continues to be a challenging pregnancy complication, and a body of literature indicates that inflammation can contribute to premature delivery by converting a receptive uterine environment to a hostile one. Cytokines have been demonstrated to provoke up-regulation of inflammatory genes (e.g. interleukin-1, 6, and 8, tumor necrosis factor-alpha, cyclooxygenase-2, and microsomal prostaglandin E synthase-1). Using monolayer cultures of human amnion mesenchymal cells (AMCs) as a model, we aimed to detail the global programme of gene expression that occurs in response to cytokine challenge. Human amnion mesenchymal cells were challenged with 10 ng/ml of interleukin-1-beta for 1 hour (1h) or 8 hours (8h) in serum-free media, while control cells were treated with serum free medium only (veh). The cells (veh, 1h and 8h) were subjected to RNA extraction, quantification, and evaluation, followed by hybridization on Affymetrix GeneChip® Human Genome U133A 2.0 Arrays (Platform GPL571). Experiments were repeated three times for a total of nine samples used for microarray analysis. Three biological replicates were used to ensure that any results were not biased by day-to-day variation in RNA extraction.
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Project description:Preterm birth is an important unsolved clinical problem. Despite advanced treatments, infants who survive prematurity remain at increased risk for permanent disabilities. In approximately one-third of cases, prematurity is related to infection and/or inflammation, which renders hostile the normally receptive intrauterine environment. Proinflammatory cytokines provoke up-regulation of genes that promote uterine contractions. Using monolayer cultures of human cervical fibroblast cells as a model, we profiled the global pattern of gene expression in response to cytokine challenge.
2020-07-30 | GSE154571 | GEO
Project description:Prostaglandin E2 (PGE2) is involved in several inflammatory conditions including periodontitis. The aim of this study was to investigate the global gene expression profile of tumor necrosis factor alpha (TNFalpha) stimulated human gingival fibroblasts, focusing on signal pathways related to PGE2 production and the new PGE2-synthesizing enzymes, prostaglandin E synthases (PGES). The expression of microsomal prostaglandin E synthase-1 (mPGES-1) as well as the upstream cyclooxygenase-2 (COX-2) was up-regulated by TNFalpha, accompanied by increased PGE2 production. In contrast, the expression of microsomal prostaglandin E synthase-2 (mPGES-2) and cytosolic prostaglandin E synthase (cPGES) was unaffected by TNFalpha. Using microarray analysis in a time-course factorial design including time points 1, 3 and 6 h, we identified differentially expressed genes in response to TNFalpha treatment. Enrichment analysis of microarray data identified two positively regulated signal transduction pathways: c-Jun N-terminal kinase (JNK) and Nuclear Factor-kappaB (NF-kappaB). We used specific inhibitors and phosphorylation analysis to confirm their role in PGE2 regulation. Both JNK and NF-kappaB inhibitors reduced the TNFalpha-stimulated up-regulation of mPGES-1 and COX-2 as well as subsequent PGE2 production. The novel finding that TNFalpha-stimulated mPGES-1 is regulated by JNK suggests this kinase as a potential future target for treatment strategies in inflammatory disorders, including periodontitis. Keywords: Time course, gene expression, factorial design.
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Project description:Preterm birth is an important unsolved clinical problem. Despite advanced treatments, infants who survive prematurity remain at increased risk for permanent disabilities. In approximately one-third of cases, prematurity is related to infection and/or inflammation, which renders hostile the normally receptive intrauterine environment. Proinflammatory cytokines provoke up-regulation of genes that promote uterine contractions. Using monolayer cultures of human decidual cells as a model, we profiled the global pattern of gene expression in response to cytokine challenge. Decidualized human endometrial stromal cells were treated with 1 ng/ml of interleukin-1-beta for 6 hours, while control cells were treated with 0.1% PBS containing 0.1% bovine serum albumin (vehicle). The cells were subjected to RNA extraction, quantification, and evaluation, followed by hybridization on Affymetrix Human Gene 2.0 ST Arrays (Platform GPL16686). Three biological replicates were used (6 total samples).
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Project description:Amnion-derived prostaglandin E2 (PGE2) and cortisol are key to labor onset. Identification of the common transcription factor driving the expression of both cyclooxygenase-2 (COX-2) and 11β-hydroxysteroid dehydrogenase 1 (11β-HSD1), the key enzymes in their production, may hold the key to the treatment of pre- and post-term labor. Here, we have found that the CCAAT enhancer binding protein δ (C/EBPδ) is such a transcription factor which underlies the feed-forward induction of COX-2 and 11β-HSD1 expression by their own products PGE2 and cortisol in human amnion fibroblasts so that their production would be ensured in the amnion for the onset of labor. Moreover, the abundance of C/EBPδ in amnion increases along with COX-2 and 11β-HSD1 at term and further increases at parturition. Knockout of C/EBPδ in mice delays the onset of labor further supporting the concept. In conclusion, C/EBPδ may serve as a novel pharmaceutical target in the amnion for treatment of pre- and post-term labor.
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Project description:Amnion-derived prostaglandin E2 (PGE2) and cortisol are key to labor onset. Identification of the common transcription factor driving the expression of both cyclooxygenase-2 (COX-2) and 11β-hydroxysteroid dehydrogenase 1 (11β-HSD1), the key enzymes in their production, may hold the key to the treatment of pre- and post-term labor. Here, we have found that the CCAAT enhancer binding protein δ (C/EBPδ) is such a transcription factor which underlies the feed-forward induction of COX-2 and 11β-HSD1 expression by their own products PGE2 and cortisol in human amnion fibroblasts so that their production would be ensured in the amnion for the onset of labor. Moreover, the abundance of C/EBPδ in amnion increases along with COX-2 and 11β-HSD1 at term and further increases at parturition. Knockout of C/EBPδ in mice delays the onset of labor further supporting the concept. In conclusion, C/EBPδ may serve as a novel pharmaceutical target in the amnion for treatment of pre- and post-term labor.
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Project description:Amnion-derived prostaglandin E2 (PGE2) and cortisol are key to labor onset. Identification of the common transcription factor driving the expression of both cyclooxygenase-2 (COX-2) and 11β-hydroxysteroid dehydrogenase 1 (11β-HSD1), the key enzymes in their production, may hold the key to the treatment of pre- and post-term labor. Here, we have found that the CCAAT enhancer binding protein δ (C/EBPδ)is such a transcription factor which underlies the feed-forward induction of COX-2 and 11β-HSD1 expression by their own products PGE2 and cortisol in human amnion fibroblasts so that their production would be ensured in the amnion for the onset of labor. Moreover, the abundance of C/EBPδin amnion increases along with COX-2 and 11β-HSD1 at term and further increases at parturition. Knockout of C/EBPδ in mice delays the onset of labor further supporting the concept. In conclusion, C/EBPδmay serve as a novel pharmaceutical target in the amnion for treatment of pre- and post-term labor.
2021-07-15 | GSE166454 | GEO
Project description:Cellular differentiation and lineage commitment are considered to be robust and irreversible processes during development. Recent work has shown that mouse and human fibroblasts can be reprogrammed to a pluripotent state with a combination of four transcription factors. This raised the question of whether transcription factors could directly specify somatic cell fates in cells such as pancreatic ? cells, contractile cardiomyocytes and neurons. We hypothesized that combinatorial expression of chondrocyte-specific transcription factors could directly convert human amnion cells into chondrosarcoma. Starting from a pool of candidate genes, we identified a combination of only five genes (5F pool), BCL6, T (also called BRACHYURY), c-MYC, MITF and BAF60C (also called SMARCD3) that rapidly and efficiently convert postnatal human amnion into chondrosarcoma. The cells generated expressed multiple cartilage-specific genes such as collagen type II ?1, link protein-1 and aggrecan, and exhibited characteristics of cartilage both in vivo and in vitro. Expression of the endogenous genes for T and MITF was initiated, implying that the cell conversion is due to not only the forced expression of the transgenes, but also the cellular reprogramming by the transgenes. The same set of genes converted human placental artery-derived endothelial (hPAE) cells and menstrual blood-derived cells into chondrosarcoma cells, implying that this conversion is independent of cell types. Direct conversion system from non-cartilage tissue to cartilaginous tissue contributes substantially to a major advance toward cartilage development, oncogenesis of chondrocytes, and cell-based therapy. We hypothesized that combinatorial expression of chondrocyte-specific transcription factors could directly convert human amnion cells into chondrosarcoma. Starting from a pool of candidate genes, we identified a combination of only five genes that rapidly efficiently convert postnatal human amnion into chondrosarcoma.
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