Transcriptomic profiling of human placenta in gestational diabetes mellitus
Ontology highlight
ABSTRACT:
ORGANISM(S): Homo sapiens
PROVIDER: GSE237061 | GEO | 2026/06/03
REPOSITORIES: GEO
Similar Datasets
Project description:Gestational diabetes mellitus (GDM), one of the most common pregnancy complications, affects approximately 6% of pregnancies. This study attempted to use the data-independent acquisition (DIA) mass spectrometry (MS) to identify the potential protein biomarkers from the placental tissues from the GDM patients and the normal pregnant women.
2021-12-28 | PXD030656 |
Project description:The hemochorial placenta provides a critical barrier at the maternal-fetal interface to modulate maternal immune tolerance and enable gas and nutrient exchange between mother and conceptus. Pregnancy outcomes are adversely affected by gestational diabetes mellitus (GDM); however, the effects of GDM on placental formation, and subsequently fetal development, are not fully understood. In this report, streptozotocin was used to induce hyperglycemia in pregnant rats for the purpose of investigating the impact of GDM on placental formation and fetal development. GDM caused placentomegaly and placenta malformation, decreasing placental efficiency and fetal size. Elevated glucose disrupted rat trophoblast stem (TS) cell differentiation in vitro. Evidence of altered trophoblast differentiation was also observed in vivo, as hyperglycemia affected the junctional zone transcriptome and interfered with intrauterine trophoblast invasion and uterine spiral artery remodeling. When exposed to hypoxia, rats with GDM showed decreased proliferation and ectoplacental cone development on gestation day (gd) 9.5 and complete pregnancy loss by gd 13.5. Furthermore, elevated glucose concentrations inhibited TS cell responses to hypoxia in vitro. Overall, these results indicate that alterations in placental development, efficiency, and plasticity could contribute to the suboptimal fetal outcomes in offspring from pregnancies complicated by GDM.
2020-07-07 | GSE144276 | 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:The microRNA (miRNA) expression profile of plasma exosome in pregnant women complicated with gestational diabetes mellitus (GDM) has not been fully clarified. In this study, differentially expressed miRNAs in plasma exosomes were identified by high-throughput small RNA sequencing in 12 GDM and 12 normal glucose tolerance (NGT) pregnant women and validated in 102 GDM and 101 NGT pregnant women. A total of 22 exosomal miRNAs were found and five of them were verified by qRT-PCR. Exosomal miR-423-5p was upregulated, while miR-99a-5p, miR-192-5p, miR-148a-3p, and miR-122-5p were downregulated in pregnant women complicated with GDM.
2022-11-09 | GSE192813 | GEO
Project description:Gestational diabetes mellitus (GDM) is a pregnancy-specific metabolic disorder associated with adverse maternal and fetal outcomes, with epigenetic dysregulation increasingly implicated in fetal programming. As the placenta plays a central role in maternal–fetal nutrient and hormonal exchange, this study investigated structural, epigenetic, and metabolic alterations in placentas from GDM pregnancies. Pregnant women recruited from PRS Hospital Pvt. Ltd. were classified as normoglycemic and GDM based on oral glucose tolerance test results, and maternal blood, cord blood, and placental tissues were collected for histological evaluation, DNA methylation profiling, lipid analysis, and gene expression studies. GDM placentas exhibited pronounced morphological abnormalities, including increased syncytial knots, chorangiosis, villous immaturity, and fibrinoid necrosis. Epigenomic analysis identified 521 differentially methylated regions, with significant enrichment in lipid metabolism pathways; notably, the lipid-associated gene PLIN1 was hypermethylated and significantly downregulated in GDM placentas. Concordantly, lipid profiling of maternal and cord blood revealed marked dyslipidemia in GDM subjects, indicating disrupted lipid homeostasis at both molecular and systemic levels. Collectively, these findings demonstrate that GDM induces coordinated structural, epigenetic, and metabolic alterations in the placenta that may influence fetal lipid exposure and contribute to long-term metabolic risk, highlighting PLIN1 as a potential biomarker and therapeutic target.
2026-01-24 | GSE317191 | GEO
Project description:The oligo microarray were used to determine gene expression profile of PBMC from gestational diabetes mellitus (GDM) patients.
2012-08-25 | E-MEXP-3349 | biostudies-arrayexpress
Project description:Gingival crevicular fluid samples were collected from pregnant women during the first trimester to investigate early transcriptomic changes associated with gestational diabetes mellitus (GDM). RNA-seq was performed to profile the complete gene expression landscape and identify predictive molecular signatures
2026-05-05 | GSE297755 | GEO
Project description:As one of the most common maternal comorbidities, gestational diabetes mellitus (GDM) and preeclampsia (PE) are associated with maternal and infant health. Although the pathogenesis of PE and GDM remains controversial, oxidative stress is thought to be involved in the underlying pathology of GDM and PE. Protein lysine acetylation (Kac) plays an important regulatory role in biological processes. There is little data regarding the association of the maternal acetylome with GDM and PE. This study aimed to assess the multi-omics (proteome and acetylome) potential value in the underlying pathology for GDM and PE by label-free quantification proteomics technology. In our study, we included placental tissue from healthy individuals (n=6), GDM patients (n=6), and PE patients (n=6). We identified 22 overlapping DEPs (differentially expressed proteins) and 192 overlapping DAPs (differentially acetylated proteins) between the GDM and PE groups. Furthermore, 192 overlapping DAPs were mainly enriched in endoplasmic reticulum stress and ferroptosis pathways. Interestingly, endoplasmic reticulum stress, ferroptosis, and oxidative stress are believed to be related to each other. We also identified that acetylation of the HSP90AA1, HSPA8, PDIA3, GPX4, TF, and CP might serve as novel markers and better therapeutic targets in both complications. We thoroughly analyzed the key characteristics of proteome and acetylome in GDM and PE placental tissues, which may be useful for exploring the underlying pathology and discovering new biomarkers and therapeutic targets.
2024-01-25 | PXD032981 | Pride
Project description:The oligo micoarrays were used to determine gene expression profiles of peripheral blood mononuclear cells from gestational diabetes mellitus (GDM) patients.
2012-08-23 | E-MEXP-3382 | biostudies-arrayexpress
Project description:Genome wide DNA methylation profiling of cord blood cells obtained from gestational diabetes mellitus (GDM) pregnancies. The Illumina EPIC methylation beadchip array was used to obtain DNA methylation profiles across approximately 850,000 CpG dinucleotide methylation loci in DNA isolated from cord blood. Samples include 165 GDM subjects.
2021-06-23 | GSE122086 | GEO