Effects of STOX1 expression variants on trophoblastic cell lines
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ABSTRACT:
ORGANISM(S): Homo sapiens
PROVIDER: GSE148088 | GEO | 2020/04/05
REPOSITORIES: GEO
Similar Datasets
Project description:STOX1 is a major factor in genetic forms of preeclampsia. In BeWo trophoblast cells, that are interesting model of human villous trophoblasts since they are able to fuse (as primary trophoblasts) under forskloin treatment (20µM) during 3 days.
2023-12-31 | E-MTAB-13352 | biostudies-arrayexpress
Project description:Trophoblast fusion is a central step in placental physiology. This mechanisms can be studied in the BeWO cell model that fuse following forskolin treatment that activates the c-AMP cascade.
2020-12-16 | E-MTAB-9832 | biostudies-arrayexpress
Project description:Introduction: In human placenta, alteration in trophoblast differentiation has a major impact on placental maintenance and integrity. Moreover, abnormal syncytial fusion seems to be implicated in the development of many complications including pre-eclampsia and intra-uterine growth restriction (IUGR). However, little is known about the mechanisms that control cytotrophoblast fusion into syncytiotrophoblast. BeWo cell line is commonly used to study placental function since it can be induced to form syncytium and secretes hormones. This fusion is triggered by cAMP or forskolin treatments. In contrast, JEG-3 cell line fails to undergo substantial fusion. Therefore, we will use BeWo and JEG-3 cells to identify a set of genes responsible of trophoblast fusion. Methods: BeWo and JEG-3 cells were treated with forskolin for 48 to induce fusion. RNA was extracted, hybridized to Affymetrix HuGene ST1.0 arrays and analyzed using system biology. Trophoblast differentiation was evaluated by real time PCR and immunocytochemistry analysis. Moreover, some of the identified genes were validated by real time PCR. Results: Our results identified a list of 32 altered genes in fused BeWo cells compared to JEG-3 cells after forskolin treatment. Among these genes, 4 were validated by real-time PCR including salt inducible Kinase 1 (SIK1) gene which is specifically upregulated in BeWo cells upon fusion. Moreover, using system biology analysis, SIK1 showed to be at the center of many biological and functional processes which suggest that it might play a major role in trophoblast differentiation. Conclusion: This study identified new target genes implicated in trophoblast fusion; a process implicated in the etiology of many pregnancy-related diseases such as preeclampsia, IUGR, and gestational diabetes.
2019-02-26 | GSE127170 | GEO
Project description:The aim of this work was to compare the syncytiotrophoblast differentiation capacity of placental stem cells (PSCs) to the BeWo b30 trophoblast cell line. Syncytiotrophoblast markers were analyzed, as well as drug, hormone and nutrient transporters.
2023-10-24 | GSE245763 | GEO
Project description:The syncytiotrophoblast develops as a result of the fusion of placental villous cytotrophoblast cells. These multinuclear cells are essential for fetal-maternal exchange and production of pregnancy-related hormones. Placental deficiency is considered a major risk factor associated with intrauterine growth restriction and preeclampsia. Better understanding of placental patho-physiology requires knowledge on gene expression regulation involved in trophoblast differentiation. Using the well-established in vitro trophoblast differentiation model, we have performed a microarray analysis on mRNA expression in trophoblast and syncytiotrophoblast cell cultures. Dramatic changes in gene expression patterns were detected during trophoblast differentiation. As many as 3524 novel and known genes are found to be up- or down regulated for more than 2-fold. Real-time PCR analysis of a group of genes confirmed the reliability of the microarray data. Overall, this study provided a global view on the molecular events underlying trophoblast differentiation. Subsequent characterization on regulation and function of the identified genes may lead to discovery of new pathways important for placental differentiation and function. Keywords: Trophoblast culture cells
2006-05-10 | GSE4100 | GEO
Project description:Human cytotrophoblast organoid cultures were established from the villous trophoblast of first trimester placentas. We analyzed the global expression profile of the cytotrophoblast organoids (CTB-ORG) and compared to the profile of the tissue of origin i.e. villous cytotrophoblast (vCTB) as well as to differentiated syncytiotrophoblast (STB) and placental fibroblasts (FIB).
2018-08-02 | GSE109976 | GEO
Project description:Invasive extravillous trophoblasts (EVTs) of the human placenta are critically involved in successful pregnancy outcome since they remodel the uterine spiral arteries to increase blood flow and oxygen delivery to the placenta and the developing fetus. To gain more insights into their biological role different primary cell culture models are commonly utilised. However, access to early placental tissue may be limited and primary trophoblasts rapidly cease proliferation in vitro impairing genetic manipulation. Hence, trophoblastic cell lines have been widely used as surrogates to study EVT function. Although the cell lines share some molecular marker expression with their primary counterpart, it is unknown to what extent they recapture the invasive phenotype of EVT. Therefore, we here report the first thorough GeneChip analyses of SGHPL-5, HTR-8/SVneo, BeWo, JEG-3 and the novel ACH-3P trophoblast cells in comparison to previously analysed primary villous cytrophoblasts and extravillous trophoblasts. To identify EVT-specific gene expression signatures in trophoblast cell lines, we calcuted differentially expressed genes between pre-defined groups based on the distinct origins of the five trophoblast cell lines under investigation. Comparison 1 comprised EVT, HTR-8/Svneo and SGHPL-5 vs choriocarcinoma cells (ACH-3P, BeWo, JEG-3). Comparison 2 comprised EVT, ACH-3P, BeWo, JEG-3 vs extravillous trophoblast cell lines (HTR-8/SVneo, SGHPL-5).
2010-09-23 | E-GEOD-20510 | biostudies-arrayexpress
Project description:The mechanisms by which the placenta adapts to exogenous stimuli to create a stable and healthy environment for the growing fetus are not well known. Low oxygen tension and sub-optimal vitamin D levels influence placental function and both are associated with preeclampsia, a condition associated with altered development of placental trophoblast. We hypothesized that oxygen tension, vitamin D levels, or both affect villous trophoblast by modulation of gene expression through DNA methylation. To test this we used the Illumina Infinium Human Methylation 450 BeadChip array to compare the DNA methylation profile of primary cultures of human cytotrophoblasts and syncytiotrophoblasts under three oxygen tensions and three vitamin D levels. We found no effect on global DNA methylation by either treatment, but a limited set of loci became hypermethylated in cytotrophoblasts exposed for 24 hours to 1% oxygen, as compared to the same cells exposed to 8% or 20% oxygen. Vitamin D levels had no detectable effect on methylation profiles in either trophoblast type. Hypermethylation with low oxygen tension was independently confirmed by bisulfite-pyrosequencing in a subset of functionally important genes including CP, ITGA5, SOD2, XDH and ZNF2. Intriguingly, 70 out of the 147 hypoxia-associated CpGs, overlapped with CpG sites that become hypomethylated upon differentiation of cytotrophoblasts into syncytiotrophoblasts. Furthermore, the preponderance of altered sites was located at AP-1 binding sites. We suggest that AP-1 expression is triggered by hypoxia and interacts with DNA methyltransferases (DNMTs) to target methylation at specific sites in the genome, thus causing suppression of the associated genes that are responsible for differentiation of villous cytotrophoblast to syncytiotrophoblast. RNA from cytotrophoblast from 2 placentas exposed to 3 different conditions of hypoxia (1%,8%,20%) and treated with 3 levels of vitamin D were run on the Illumina HT-12v4 Expression Array
2013-01-18 | E-GEOD-41331 | biostudies-arrayexpress
Project description:The mechanisms by which the placenta adapts to exogenous stimuli to create a stable and healthy environment for the growing fetus are not well known. Low oxygen tension and sub-optimal vitamin D levels influence placental function and both are associated with preeclampsia, a condition associated with altered development of placental trophoblast. We hypothesized that oxygen tension, vitamin D levels, or both affect villous trophoblast by modulation of gene expression through DNA methylation. To test this we used the Illumina Infinium Human Methylation 450 BeadChip array to compare the DNA methylation profile of primary cultures of human cytotrophoblasts and syncytiotrophoblasts under three oxygen tensions and three vitamin D levels. We found no effect on global DNA methylation by either treatment, but a limited set of loci became hypermethylated in cytotrophoblasts exposed for 24 hours to 1% oxygen, as compared to the same cells exposed to 8% or 20% oxygen. Vitamin D levels had no detectable effect on methylation profiles in either trophoblast type. Hypermethylation with low oxygen tension was independently confirmed by bisulfite-pyrosequencing in a subset of functionally important genes including CP, ITGA5, SOD2, XDH and ZNF2. Intriguingly, 70 out of the 147 hypoxia-associated CpGs, overlapped with CpG sites that become hypomethylated upon differentiation of cytotrophoblasts into syncytiotrophoblasts. Furthermore, the preponderance of altered sites was located at AP-1 binding sites. We suggest that AP-1 expression is triggered by hypoxia and interacts with DNA methyltransferases (DNMTs) to target methylation at specific sites in the genome, thus causing suppression of the associated genes that are responsible for differentiation of villous cytotrophoblast to syncytiotrophoblast. DNA from 2 cell types from 5 placentas exposed to 3 different conditions of hypoxia (1%,8%,20%) and treated with 3 levels of vitamin D were bisulfite converted and run on the Illumina HumanMethylation450 BeadChip
2013-01-18 | E-GEOD-41336 | biostudies-arrayexpress
Project description:BeWo trophoblast cells differentiate in response to expsure to cyclic adenosine monophosphate (cAMP) analogs. Differentiation includes syncytialization (fusion) and hormonogenesis. The goal of this study was to globally determine transcripts differentially expressed in BeWo trophoblast cells following a 24-h exposure to 250 uM 8-bromo-cAMP. 3 replicates undifferentiated BeWo trophoblast cells; and 3 replicates BeWo trophoblast cells treated with 250 uM 8-Br-cAMP for 24 h.
2015-08-01 | E-GEOD-66840 | biostudies-arrayexpress