Ena-DATASET-DCPTCUHK-11-09-2015-13:57:37:711-187 - samples
Ontology highlight
ABSTRACT:
PROVIDER: EGAD00001001609 | EGA |
REPOSITORIES: EGA
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Project description:The molecular interactions between the maternal environment and the developing embryo that are key for early pregnancy success are known to be influenced by factors such as maternal metabolic status. Our understanding of the mechanism(s) through which these individual nutritional stressors alter endometrial function and the in utero environment for early pregnancy success is, however, limited. Here we report, for the first time, the use of an endometrium-on-a-chip microfluidics approach to produce a multi-cellular endometrium in vitro, that was exposed to glucose and insulin concentrations associated with maternal metabolic stressors. Following isolation of endometrial cells (epithelial and stromal) from the uteri of non-pregnant cows in the early-luteal phase (Day 4-7 approximately), epithelial cells were seeded in the upper chamber of the device (4-6 104 cells/mL) and stromal cells seeded in the lower chamber (1.5-2 104 cells/mL). Three different concentration of glucose (0.5, 5.0 or 50 mM) or insulin (Vehicle, 1 or 10 ng/mL) were performed in the endometrial cells at a flow rate of 1µL/min for 72 hr to mimic the rate of secretion in vivo. Quantitative differences in the transcriptomic response of the cells and the secreted proteome of in vitro-derived uterine luminal fluid (ULF) were determined by RNA-sequencing and Tandem Mass Tagging Mass Spectrometry (TMT), respectively. Changes in maternal glucose altered 21 and 191 protein-coding genes in epithelial and stromal cells, respectively (p<0.05), with a dose-dependent quantitative change in the protein secretome (1 and 23 proteins in epithelial and stromal cells, respectively). Altering insulin concentrations resulted in limited transcriptional changes including transcripts for insulin-like binding proteins that were cell specific (5, 12, and 20) but altered the quantitative secretion of 196 proteins including those involved in extracellular matrix-receptor interaction and proteoglycan signaling in cancer. Collectively, these findings highlight one potential mechanism by which changes to maternal glucose and insulin associated with metabolic stress may alter uterine function.
2021-03-22 | PXD024218 | Pride
Project description:Progesterone signaling is crucial for pregnancy. To investigate the role of myometrial progesterone receptor in support of pregnancy, genome-wide gene expression profiles of pregnant uterine tissues from myometrial PGR knockout and control mice were profiled by RNAseq. The transcriptomic alterations in response to PGR loss permit identification of the underlying molecular mechanisms by which progesterone and PGR control myometrial homeostasis for pregnancy.
2022-09-21 | GSE199101 | GEO
Project description:Recently, microRNAs (miRNAs), known to modulate gene expression through post-transcriptional mechanisms, were implied in regulation of early pregnancy events including maternal recognition of pregnancy and implantation. To characterize complex transcriptomic changes in expression of miRNAs in pregnant and cyclic endometria collected on days 12, 16 and 20 was analyzed using Illumina deep sequencing. This research showed repertoire of pregnancy-related miRNAs in porcine endometrium during initial stages of conceptus implantation and during the estrous cycle and sheds light on miRNA-mediated gene expression regulation mechanism at the maternal-conceptus interface.
2015-11-06 | GSE64863 | GEO
Project description:Recently, microRNAs (miRNAs), known to modulate gene expression through post-transcriptional mechanisms, were implied in regulation of early pregnancy events including maternal recognition of pregnancy and implantation. To characterize complex transcriptomic changes in expression of miRNAs in pregnant and cyclic endometria collected on days 12, 16 and 20 was analyzed using Illumina deep sequencing. This research showed repertoire of pregnancy-related miRNAs in porcine endometrium during initial stages of conceptus implantation and during the estrous cycle and sheds light on miRNA-mediated gene expression regulation mechanism at the maternal-conceptus interface. miRNAs and isomiRs expression profiles were analyzed in samples collected from porcine endometrium on Days 12, 16 and 20 of pregnancy and estrous cycle. Each group was represented by 4 to 6 samples. Generated libraries were run in multiplex using specific barcodes to differentiate samples. Illumina sequencing was performed in duplicate (two runs) and after demultiplexing, the same samples from two independent runs were concatenated.
2015-11-06 | E-GEOD-64863 | biostudies-arrayexpress
Project description:During pregnancy, the maternal-fetal interface plays vital roles in fetal development. Its disruption is frequently found in pregnancy complications. Recent works show increased incidences of adverse pregnancy outcomes in COVID-19 patients; however, the mechanism remains unclear. Here, we analyzed the molecular impacts of SARS-CoV-2 infection on the maternal-fetal interface. Generating bulk and single-nucleus transcriptomic and epigenomic profiles from COVID-19 patients and control samples, we discovered aberrant immune activation and angiogenesis patterns in distinct cells from patients. Surprisingly, retrotransposons were also dysregulated in specific cell types. Notably, reduced enhancer activities of LTR8B elements were functionally linked to the downregulation of Pregnancy-Specific Glycoprotein genes in syncytiotrophoblasts. Our findings revealed that SARS-CoV-2 infection induced significant changes to the epigenome and transcriptome at the maternal-fetal interface, which may be associated with pregnancy complications.
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Project description:This dataset consist on 70 maternal plasma samples (bam files) used in the FetalQuantSD. The maternal plasma DNA samples were sequenced using the HiSeq 2000 platform (Illumina) with a 50-cycle paired-end mode.
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Project description:This study investigated the proteomes of macro-, micro- and nanovesicles derived from the same first trimester human placenta to better understand the role that these extracellular vesicles (EVs) play in maternal adaptation during healthy pregnancy. During human pregnancy, the mother undergoes major physiological and immunological adaptations to accommodate the fetus. There is growing evidence that EVs extruded from the placental syncytiotrophoblast into the maternal blood may regulate these maternal adaptations. Placental EVs can be divided into macro-, micro- and nanovesicles based on their size. To date, it is unclear whether these differently sized EVs carry different protein cargos and have different effects on maternal responses.
2016-04-29 | PXD003003 | Pride
Project description:The endometrium plays a crucial role in the reproductive organs in the aspect of embryo-maternal communication and pregnancy. This study investigated transcriptome profiles of endometrial cells stimulated with PBS, LPA and LPA in combination with IFNt. LPA, one of the signaling molecule, is locally produced and released from the bovine endometrium during estrous cycle and early pregnancy. The highest concentration of LPA and expression of its active receptor (LPAR1) were detected in bovine endometrium at the time of maternal recognition of pregnancy, when the conceptus announces its presence by increased IFNt production. Using transcriptomic approach we compared the influence of LPA and LPA together with IFNt on the gene expression profiles in bovine endometrial cells.
2014-01-10 | GSE53457 | GEO
Project description:Examined the role of maternal voluntary wheel running commencing 10 weeks prior to gestation, and throughout pregnancy, on placental transcriptome in late gestation While exercise (EX) is beneficial during pregnancy for both mother and child, little is known about the mechanisms by which maternal (MAT EX) mediates changes in utero. We hypothesized that effects of MAT EX prior to and during gestation will be evident in transcriptomic signatures in the placenta and will be sexually dimorphic. Six-week-old female C57BL/6 mice were divided into 2 groups; with (exercise, EX; N = 7) or without (sedentary, SED; N = 8) access to voluntary running wheels. EX was provided via 24-hour access to wheels for 10 weeks prior to conception until late pregnancy (18.5 days post coitum). Sex-stratified placenta and fetal livers were collected. Mi-croarray analysis of SED and EX placenta revealed that MAT EX affected gene transcript expression of 283 and 661 transcripts in male and female placenta (±1.4-fold, p < 0.05). Gene-set enrichment and Ingenuity Pathway analyses of male placenta showed that MAT EX led to inhibition of sig-naling pathways, biological functions, and down regulation of transcripts related to lipid and steroid, while MAT EX in female placentas led to activation of pathways, biological functions, and gene expression related to muscle growth, brain, vascular development, and growth factors. Overall, our results suggest that effects of MAT EX on the placenta and presumably on the offspring are influenced by maternal habitus and are sexually dimorphic.
2024-01-31 | GSE243228 | GEO
Project description:Maternal overnutrition during pregnancy/or lactation predisposes offspring obesity and related metabolic syndromes in later life. Hypothalamus is the highest heterogeneous brain region located at the base of the brain that is critical to the regulation of the energy homeostasis.We investigated how the maternal programming shapes the single-nucleus transcriptomic landscapes in postnatal day15 offspring hypothalamus in a sex-specific manner.
2024-02-18 | GSE217677 | GEO