Maternal obesity alters the placental transcriptome in a fetal sex-dependent manner
Ontology highlight
ABSTRACT:
ORGANISM(S): Mus musculus
PROVIDER: GSE223880 | GEO | 2025/02/12
REPOSITORIES: GEO
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Project description:Iron deficiency occurs when iron demands chronically exceed intake, and is particularly prevalent in pregnant women. Iron deficiency during pregnancy poses health risks for the baby. The placenta serves as the interface between a pregnant mother and her baby; thus, maternal iron deficiency may indirectly impact fetal growth and development by altering placental function. In this study, pregnant Sprague-Dawley rats were fed either a low-iron or iron-replete diet starting two weeks before mating. On gestational day 18.5, RNA was collected, and a Clariom S microarray was performed to elucidate differences in gene expression between gestaional day 18.5 placentas isolated from dams fed iron replete or iron deficient diets.
2021-11-10 | GSE163226 | GEO
Project description:Background: Maternal iron deficiency (ID) is associated with poor pregnancy and fetal outcomes. The effect is thought to be mediated by the placenta but there is no comprehensive assessment of placental response to maternal ID. Additionally, whether the influence of maternal ID on the placenta differs by fetal sex is unknown. Objectives: Our primary aim was to identify gene and protein signatures of ID mouse placentas at mid-gestation. A secondary objective was to profile the expression of iron genes in mouse placentas across gestation. Methods: We used a real-time PCR based array to determine the mRNA expression of all known iron genes in mouse placentas at embryonic day (E) 12.5, E14.5, E16.5, and E19.5 (n=3 placentas/time point). To determine the effect of maternal ID, we performed RNA sequencing and proteomics in male and female placentas from ID and iron adequate mice at E12.5 (n=8 dams/diet). Results: In female placentas, six genes including transferrin receptor (Tfrc) and solute carrier family 11 member 2 were significantly changed by maternal ID. An additional 154 genes were altered in male ID placentas. Proteomic analysis quantified 7662 proteins in the placenta. Proteins translated from iron responsive element (IRE) containing mRNAs were altered in abundance; ferritin and ferroportin 1 decreased while TFRC increased in ID placenta. Less than 4% of the significantly altered genes in ID placentas occurred both at the transcriptional and translational levels. Conclusions: Our data demonstrate that the impact of maternal ID on placental gene expression in mice is limited in scope and magnitude at mid-gestation. We provide strong evidence for IRE-based transcriptional and translational coordination of iron gene expression in the mouse placenta. Finally, we discover sexually dimorphic effects of maternal ID on placental gene expression, with more genes and pathways altered in male compared with female mouse placentas.
2021-03-12 | PXD023454 | Pride
Project description:We studied differences in epithelial thickness by histology and gene expression by Affymetrix gene arrays and PCR in the skin/fat of 10 obese (BMI 35-50) and 10 normal weight (BMI 18.5-26.9) postmenopausal women paired by age and race
2020-08-26 | GSE151839 | GEO
Project description:This study assesses fatty acid composition of lipids in matched maternal plasma and placental tissue from lean, obese and gestational diabetes (GDM) women stratified by fetal sex. Obesity and GDM are associated with adverse pregnancy outcomes and program the offspring for cardiometabolic disease in a sexually dimorphic manner. We collected maternal plasma and placental villous tissue following elective cesarean section at term from women who were lean (pre-pregnancy BMI 18.5-24.9), Obese (BMI>30) and type A2 GDM (matched to obese BMI) with either a male or female fetus (n=4 each group). Lipids were extracted and fatty acid composition of different lipid classes were analyzed by LC-MS/MS to find significant changes in GDM vs Obese, GDM vs Lean, and Obese vs Lean.
2024-06-09 | MSV000094962 | GNPS
Project description:To characterise the transcriptome of mouse placental junctional zone cells in Control litters (deletion of the maternally-inherited and silent Igf2 allele, with normal Igf2 levels in whole litters) in UE litters (dams carried offspring with a deletion of the paternally-inherited Igf2 allele in the placental endocrine cells with diminished Igf2 production from the endocrine cells in whole litters), we performed single nucleus RNA sequencing on the placenta Junctional zone 8 Control placentas (offspring sex: 4M:4F) and 8 UE placentas (offspring sex: 4M:4F) in 2 batches each.
2023-04-30 | GSE229514 | GEO
Project description:Maternal obesity is becoming a major health consideration for successful pregnancy outcomes. There is growing proof that maternal obesity has a negative influence on placental development and function, thereby adversely influencing offspring programming and health outcomes. However, the molecular mechanisms underlying these processes are so far poorly understood. We set out to analyse term placenta whole transcriptome in obese (n=5) and normoweight women (n=5), using Affymetrix microarray platform compromising of 50,000 probe sets. Our analysis shows that the placental transcriptome differs between normoweight and obese women. Different processes and pathways among placenta from obese women were dysregulated, including inflammation and immune responses, lipid metabolism, cell death and survival and cancer pathways, vasculogenesis and angiogenesis, and glucocorticoid receptor signaling pathway. Together, this global gene expression profiling approach demonstrates and confirms that maternal obesity creates a unique in utero environment that impairs placental transcriptome.
2017-01-07 | E-MTAB-4541 | biostudies-arrayexpress
Project description:In a previous study, 50% calorie restriction in mice from days 1.5-11.5 of pregnancy resulted in reduced placental weights and areas, relatively sparing of labyrinth zone area compared to junctional zone area, and dramatic changes in global gene expression profiles. Here we examined placental gene expression at day 18.5, after the return to normal feeding to see whether differences were reversible Mice were randomized to 2 treatment groups on day 1.5 of pregnancy: (1) ad libitum fed (control) (2) 50% food restriction (restricted). Mice were returned to ad libitum feed on d11.5, sacrificed on d18.5 and placentas were collected.
2015-06-18 | E-GEOD-69941 | biostudies-arrayexpress
Project description:Maternal obesity in pregnancy is associated with increased birth-weight, obesity and premature mortality in adult offspring. The Effect of Metformin on Maternal and Fetal Outcomes in Pregnant Obese Women (EMPOWaR) trial was a randomised, double-blind, placebo-controlled trial carried out to determine whether exposure to Metformin would affect the offspring birth-weight centile. Obese women exposed to Metformin had increased insulin sensitivity at 36 weeks of pregnancy, but there were no differences in offspring birthweight. We obtained the placentas from these women to determine whether there were differences in expression of genes regulating fetal growth and metabolism. In a complementary study we investigated DNA methylation in the same samples.
2019-01-31 | E-MTAB-6418 | biostudies-arrayexpress
Project description:Robust identification of placental PPARg target genes via mutliple PPARg-dependence criteria. Integration of differential expression data from Pparg-null, Rxra-null, Med1-nul and Ncoa6-null placentas and from WT and Pparg-null Trophoblast stem cells (TSC) differentiated for 2 or 4 days in the presence or absence of the PPARg agonist Rosiglitazone (Rosi). [Placentas] Three pools of three WT placentas, each vs a litter-matched pool of three Pparg-null placentas Three pools of three WT placentas, each vs a litter-matched pool of three Rxra-null placentas Three pools of three WT placentas, each vs a litter-matched pool of three Med1-null placentas Three pools of three WT placentas, each vs a litter-matched pool of three Ncoa6-null placentas [Trophoblast stem cells (TSC)] Three independent WT TSC lines differentiated for two and four days in the presence or absence of Rosi vs two independent Pparg-null TSC lines differntiated for the same durations in the presence of Rosi
2012-07-09 | E-GEOD-39233 | biostudies-arrayexpress
Project description:Purpose: the objective of this study was to determine cardiac gene expression profile in the mice heart of mutated thyroid receptor alpha 1 (TRα1R384C+/m) male offspring of control dams as well as of dams treated with 3,3',5-triiodo-L-thyronine (T3) from embryonic day 12.5 to 18.5
2023-04-23 | GSE227847 | GEO