Ontology highlight
ABSTRACT:
PROVIDER: PRJNA820443 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR18495906.fastq.gz | Fastqsanger.gz | |||
| SRR18495907.fastq.gz | Fastqsanger.gz | |||
| SRR18495908.fastq.gz | Fastqsanger.gz | |||
| SRR18495909.fastq.gz | Fastqsanger.gz | |||
| SRR18495910.fastq.gz | Fastqsanger.gz |
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Project description:Objective: To explore the characteristics and underlying molecular mechanisms of genome-scale expression profiles of women with- or without- GDM and their offspring. Materials and Methods: We recruited a group of 21 pregnant women with GDM and 20 healthy pregnant women as controls. For each pregnant women, RNA-seq were performed using the placenta and paired neonatal umbilical cord blood specimens. Differentially expressed genes (DEGs) were identified with BMI of pregnant women as covariates. Then, functional enrichment analysis was performed separately or interactively in placenta and umbilical cord blood. Results: Through the comparison of GDM and healthy samples, 1442 and 488 DEGs were identified from placenta and umbilical cord blood, respectively. Functional enrichment analysis showed that the placenta expression profiles of GDM women mirrored the molecular characteristics of type II diabetes and insulin resistance patients. DEGs illustrated significant overlaps among placenta and umbilical cord blood samples, and the overlapping DEGs were associated with endocrine resistance and insulin resistance. Conclusions: Our research demonstrated the transcriptomic alternations of GDM mothers and offspring. Our findings emphasized the importance of epigenetic modifications in the communication between pregnant women with GDM and offspring, and provided reference for the prevention, control, treatment, and intervention of perinatal deleterious events of GDM and neonatal complications.
2022-05-31 | GSE203346 | GEO
Project description:Objective: To explore the characteristics and underlying molecular mechanisms of genome-scale expression profiles of women with- or without- gestational diabetes mellitus and their offspring. Materials and Methods: We recruited a group of 21 pregnant women with gestational diabetes mellitus (GDM) and 20 healthy pregnant women as controls. For each pregnant women, RRBS were performed using the placenta and paired neonatal umbilical cord blood specimens. Differentially methylated regions (DMRs) were identified. Then, functional enrichment analysis was performed to differential methylated genes (DMGs) separately or interactively in placenta and umbilical cord blood. Results: Through the comparison of GDM and healthy samples, 2779 and 141 DMRs were identified from placenta and umbilical cord blood, respectively. Functional enrichment analysis showed that the placenta methylation and expression profiles of GDM women mirrored the molecular characteristics of “type II diabetes” and “insulin resistance”. Methylation-altered genes in umbilical cord blood were associated with pathways “type II diabetes” and “cholesterol metabolism”. DMGs illustrated significant overlaps among placenta and umbilical cord blood samples, and the overlapping DMGs were associated with cholesterol metabolism. Conclusions: Our research demonstrated the epigenomic alternations of GDM mothers and offspring. Our findings emphasized the importance of epigenetic modifications in the communication between pregnant women with GDM and offspring, and provided reference for the prevention, control, treatment, and intervention of perinatal deleterious events of GDM and neonatal complications.
2022-05-31 | GSE203169 | GEO
Project description:Exosomes are the smallest extracellular vesicles which are released during pregnancy by the placenta, umbilical cord, amniotic fluid and various cell membranes in the extracellular space. The content of exosomes during pregnancy is strongly related to various conditions such as gestational diabetes mellitus (GDM). Although it is well-known that GDM is characterized by different levels of chronic low-grade inflammation, complement system dysregulation, vascular dysfunction and platelet activation, there is little data characterizing the serum exosomal protein cargo of GDM patients and their associations to these processes. The aim of this study was to analyze the serum exosomal proteome of GDM patients, with focus on the platelet activation and the complement proteins and their relationship to serum biochemical parameters and other protein markers of lipid metabolism and prothrombotic factors.
2022-09-22 | PXD035673 | Pride
Project description:The prevalence of metabolic syndrome comprising obesity, type 2 diabetes mellitus and cardiovascular disease has been on the rise world-wide in recent years. As non-communicable diseases such as type 2 diabetes mellitus have their roots in prenatal development and conditions such as maternal gestational diabetes (GDM), we aimed to test this hypothesis in primary cells derived from the offspring of GDM mothers compared to control subjects. Methods We have assessed primary umbilical cord derived cells such as human vascular endothelial cells (HUVECs) and Wharton’s jelly derived mesenchymal stem cells (WJMSCs) from both, the offspring of GDM and healthy mothers. We have compared the primary isolates in cell based assays measuring proliferation, mitochondrial oxygen consumption, as well as the ability to support blood vessel growth. We conducted gene expression microarray studies with subsequent pathway analysis and candidate gene validation. Results We observed striking differences between the two groups such as lower metabolic rates and impairment of tube formation in cells with GDM background. HUVECs from subjects with maternal GDM have lower expression of the anti-apoptotic protein BCL-Xl suggesting compromised angiogenic capabilities. Comparative gene expression analysis revealed blood vessel formation as a major pathway enriched in the GDM derived HUVECs with the surface marker CD44 as a significant gene under-expressed in the GDM group. Functional validation of CD44 revealed that it regulates tube formation in HUVECs thereby providing new insights into a novel pathway imprinted in primary umbilical cord derived cells from GDM offspring. Conclusions/interpretation Our data demonstrate that primary cells isolated from the umbilical cord of offspring born to GDM mothers maintain metabolic and molecular imprints of maternal hyperglycemia, which occurred during prenatal development reflecting an enhanced risk for cardiovascular disease later in life.
2016-09-24 | GSE87295 | GEO
Project description:Exosomes are membranous extracellular vesicles 50–100 nm in size and are involved in cellular communication via the delivery of proteins, lipids, and RNAs. Emerging evidence shows that exosomes play a critical role in cancer. A recent study has revealed that maternal and umbilical cord serum-derived exosomes may enhance endothelial cell proliferation and migration. However, the role of exosomes isolated from the human umbilical cord in cancer development has not been investigated. To explore the potential differences in the composition and function of proteins from umbilical cord blood exosomes and maternal serum exosomes, we conducted a proteomic analysis of exosomes by mass spectrometry and bioinformatics analysis. We used the CCK-8 assay and flow cytometry to study the biological effects of umbilical serum exosomes on hepatoma cells. Our study shows that umbilical cord blood is enriched with proteins involved in ECM-receptor interactions, which may be closely related to cell metastasis and proliferation. Our findings indicate that exosomes derived from human umbilical serum can suppress the viability of hepatoma cells and may induce apoptosis of hepatoma cells. This evidence suggests that umbilical cord serum-derived exosomes may be potential leads for the development of biotherapy for liver cancer.
2022-02-17 | PXD025079 | Pride
Project description:Background: Gestational diabetes mellitus (GDM), a common pregnancy complication with profound effects on maternal and offspring health, involves epigenetic modifications, particularly DNA methylation, but the molecular mechanisms elevating metabolic disease risk in offspring remain elusive. Methods: Integrating public data with whole-genome methylation data from umbilical cord blood of GDM fetuses as the validation cohort, this study characterizes GDM-associated epigenetic features and develops a predictive model validated across external datasets to assess potential long-term health risks in offspring. Results:We identified consistent patterns of differential methylation in the offspring of GDM, with key DMPs associated with glucose homeostasis and insulin sensitivity genes. Pathway analysis revealed enrichment in insulin signaling, AMPK activation, and adipocytokine signaling pathways. Our predictive model demonstrated robust performance across different sample sizes (AUC=0.89 in public data, AUC=0.82 in validation cohort). CpG sites associated with PPARG and INS genes showed persistent predictive significance across datasets. Conclusions:This study provides a comprehensive characterization of the epigenetic landscape in the offspring of GDM, revealing consistent methylation patterns and pathway enrichments across diverse datasets. The developed predictive model holds potential for assessing health risks of GDM in offspring, advancing understanding of GDM pathophysiology and offering epigenetic biomarkers for future diagnostic, therapeutic, and preventive strategies.
2025-05-07 | GSE284448 | GEO
Project description:Exosomal RNAs in cord blood may allow intercellular communication between maternal and fetus. We aimed to establish exosomal RNA expression profiles in cord blood exosomes from gestational diabetes mellitus (GDM) patients with macrosomia.We used microarray technology to establish the differential mRNA, lncRNA and circRNA expression profiles in cord blood exosomes from GDM patients with macrosomia compared with normal controls. A total of 98 mRNAs, 372 lncRNAs and 452 circRNAs were differentially expressed in cord blood exosomes from GDM patients with macrosomia. Pathway analysis showed the differential genes were associated with PI3K-Akt signaling pathway, JAK-STAT signaling pathway, TGF-beta signaling pathway, insulin resistance, glycerolipid metabolism, fatty acid degradation and mTOR signaling pathway. These results showed that exosomal RNAs are aberrantly expressed in the cord blood of GDM patients with macrosomia.
2022-01-21 | GSE194119 | GEO
Project description:To investigate the umbilical cord lncRNA profiles in gestational diabetes-induced macrosomia, the umbilical cord vein blood from normal and gestational diabetes-induced macrosomia was hybridized to a microarray containing probes representing 33,000 lncRNA genes. Quantitative real-time polymerase chain reaction (qPCR) was used to validate selected differentially expressed lncRNAs. The gene ontology (GO), pathway and network analysis were performed. The microarray identified 8814 lncRNAs that were expressed in the umbilical cord blood, of which 349 were significantly upregulated and 892 were significantly downregulated (fold-change M-bM-^IM-% 2.0) in GDM group. The highest enriched GOs targeted by downregulated transcripts were biological regulation. Pathway analysis indicated that nine pathways corresponded to downregulated transcripts. Thirty pairs of GDM macrosomia and normal controls were divided into three subgroups randomly, and the umbilical cord vein blood from each subgroup was mixed, and hybridized to a microarray.
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Project description:Gestational diabetes mellitus (GDM) leads to poor pregnancy outcomes and fetoplacental endothelial dysfunction; however, the underlying mechanisms are still unknown. This study aimed to investigate the effect of placenta-derived exosomal miRNAs on fetoplacental endothelial dysfunction in GDM, and to further explore the role of chemerin to this end. Placenta-derived exosomal miR-140-3p and miR-574-3p expression (next-generation sequencing, quantitative real-time PCR), its interactions with cell function (Cell Counting Kit-8, Transwell, tube formation assay), chemerin interactions (Western blotting), and placental inflammation (immunofluorescence staining, enzyme-linked immunosorbent assay) were investigated. Placenta-derived exosomal miR-140-3p and miR-574-3p were downregulated in GDM. Additionally, miR-140-3p and miR-574-3p inhibited the proliferation, migration, and tube formation ability of umbilical vein endothelial cells by targeting vascular endothelial growth factor. Interestingly, miR-140-3p and miR-574-3p expression levels were negatively correlated with chemerin, which induced placental inflammation through the recruitment of macrophage cells and release of IL-18 and IL-1β. These findings indicate that chemerin reduces placenta-derived exosomal miR-140-3p and miR-574-3p levels by inducing placental inflammation, thereby promoting the proliferation, migration, and tube formation of umbilical vein endothelial cells in GDM, providing a novel perspective on the underlying pathogenesis and therapeutic targets for GDM and its offspring complications.
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