Impact of Maternal Immune Activation and Sex on Placental and Fetal Brain Cytokine and Gene Expression Profiles in a Preclinical Model of Neurodevelopmental Disorders
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ABSTRACT:
ORGANISM(S): Mus musculus
PROVIDER: GSE248222 | GEO | 2024/05/15
REPOSITORIES: GEO
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Project description:Activation of the maternal immune system during pregnancy can fetal development, which can lead to postnatal susceptibility to a wide range of diseases, including cardiovascular, metabolic and psychiatric disorders. During maternal immune activation (MIA), the maternal body must balance its ressources between mounting an immune response and investing resources into continued metabolism and growth : both essential for survival of the fetus and a successful pregnancy. How the placenta responds to MIA over time and how it can protect the fetus is not well understood, and neither are the fetal consequences of MIA. Here, we characterised the response to an induced acute inflammation in maternal lungs over time across maternal and fetal organs, using a combination of omics-methods, imaging and integrative computational analysis. We found that the placenta, unlike other maternal organs, did not react by inducing a typical inflammatory response, but instead initially induced genes associated to strengthen tissue integrity and simultaneously reduced growth to prevent exposure to potential infections. Afterwards, a return to homeostasis was observed, with heightened biosynthesis and expression of endoplasmic reticulum (ER) stress genes. This mechanism likely protects the fetus from inflammation, as we observed no immune response in the fetal liver transcriptome. Instead, we observed metabolic adaptations in the fetus, including a release of docosahexaenoic acid (DHA) Notably, DHA has a crucial function for fetal brain development , and levels of triglyceride and phosphatidylcholine lipids that are necessary for transportation of DHA to the brain were also increased. This metabolic response is likely a combination of the placental MIA response and temporary maternal fasting, caused by MIA-induced fever and lack of nutrient intake. Our study shows, for the first time, the temporal and systemic response to MIA in lungs across maternal and fetal organs.
2024-06-13 | PXD039402 | Pride
Project description:We used full genome microarrays to profile the full lifetime of the mouse placenta from embryonic day 8.5 (e8.5), at the time of chorioallantoic fusion, until postnatal day 0 (P0). For these samples, at each stage the fetal placenta and maternal decidual tissues were dissected and profiled separately (See series 1). For this experiment (Series 2), placental and decidual timecourse samples were normalized and modeled with two undissected (including placental and decidual tissue) e17 placentas to allow for scaling of values for comparison to the undissected placenta samples used in the publicly available mouse GeneAtlas dataset Experiment Overall Design: Mouse placentas were obtained from timed pregnant female mice at each timepoint, and fetal tissues were used to confirm embryo staging. For all dissected samples, fetal placenta and maternal decidual tissues were dissected and pooled separately for each litter prior to RNA extraction and hybridization on Affymetrix microarrays.
2008-06-11 | E-GEOD-11222 | biostudies-arrayexpress
Project description:The placenta regulates maternal-fetal communication, and its defect leads to significant pregnancy complications. The maternal and embryonic circulations are primitively connected in early placentation, but the function of the placenta during this developmentally essential period is relatively unknown. We thus performed a comparative proteomic analysis of the placenta before and after primary placentation and found that the metabolism and transport of lipids were characteristically activated in this period. The placental fatty acid (FA) carriers in specific placental compartments were upregulated according to gestational age, and metabolomic analysis also showed that the placental transport of FAs increased in a time-dependent manner. Further analysis of two mutant mice models with embryonic lethality revealed that lipid-related signatures could reflect the functional state of the placenta. Our findings highlight the importance of the nutrient transport function of the primary placenta in the early gestational period and the role of lipids in embryonic development.
2023-09-06 | PXD026858 | Pride
Project description:We used full genome microarrays to profile the full lifetime of the mouse placenta from embryonic day 8.5 (e8.5), at the time of chorioallantoic fusion, until postnatal day 0 (P0). For these samples, at each stage the fetal placenta and maternal decidual tissues were dissected and profiled separately (See series 1). For this experiment (Series 2), placental and decidual timecourse samples were normalized and modeled with two undissected (including placental and decidual tissue) e17 placentas to allow for scaling of values for comparison to the undissected placenta samples used in the publicly available mouse GeneAtlas dataset Keywords: time course
2008-04-23 | GSE11222 | 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:Pregnant dams at embryonic day 11.5 and 12.5 were injected i.p. with saline or polyI:C to induce activation of the maternal immune response. Placentas from each embryo were harvested at several time points relative to the E12.5 injection over the course of gestation to evaluate the placental transcriptome after MIA.
2021-11-30 | GSE149352 | GEO
Project description:Activation of the maternal immune system during pregnancy affects fetal development, which can increase in postnatal susceptibility to a range of diseases, including cardiovascular, metabolic and psychiatric disorders. During maternal immune activation (MIA), the maternal body must balance its ressources between mounting an immune response and investing resources into continued metabolism and growth, essentials for survival of the fetus and a successful pregnancy. How the placenta responds to MIA over time and how it can protect the fetus is not well understood, and neither are the fetal consequences of MIA. Here, we characterised the response to acute maternal lung inflammation across time in maternal and fetal organs, using a combination of omics, imaging and integrative computational analyses. We found that the placenta, unlike other maternal organs, did not react by a typical innate immune response, but instead induced genes associated with increased tissue integrity, likely to prevent fetal exposure to potential infections, and simultaneously reduced expression of growth-associated genes. Subsequently, a return to homeostasis was observed, with heightened expression of biosynthesis and endoplasmic reticulum (ER) stress genes. These responses likely protect the fetus from inflammation, as we observed no immune response in the fetal liver transcriptome. Instead, we observed metabolic adaptations in the fetus, including a release of docosahexaenoic acid (DHA) carrying metabolites, including triglyceride and phosphatidylcholine. Notably, DHA is crucial for fetal brain development. This metabolic response is likely a combination of the placental MIA response and temporary maternal fasting, caused by MIA-induced fever and lack of nutrient intake. Our study shows, for the first time, the integrated temporal and systemic response to LPS in lungs across maternal and fetal organs
2024-02-01 | GSE224116 | GEO
Project description:The mammalian placenta is both the physical interface between mother and fetus, and the source of endocrine signals that target the maternal hypothalamus, priming females for parturition, lactation and motherhood. Despite the importance of this connection, the effects of altered placental signaling on the maternal brain are understudied. Here, we show that placental dysfunction alters gene expression in the maternal brain, with the potential to affect maternal behavior. Using a cross between the house mouse and the Algerian mouse in which hybrid placental development is abnormal, we sequenced late gestation placental and maternal medial preoptic area transcriptomes and quantified differential expression and placenta-maternal brain co-expression between normal and hybrid pregnancies. The expression of Fmn1, Drd3, Caln1 and Ctsr was significantly altered in the brains of females exposed to hybrid placentas. Most strikingly, expression patterns of placenta-specific gene families and Drd3 in the brains of house mouse females carrying hybrid litters matched those of female Algerian mice, the paternal species in the cross. Our results indicate that the paternally-derived placental genome can influence the expression of maternal-fetal communication genes, including placental hormones, suggesting an effect of the offspring's father on the mother’s brain.
2019-12-31 | GSE126469 | GEO
Project description:Maternal immune activation (MIA)puts offspring at greater risk for neurodevelopmental disorders associated with impaired social behavior. While it is known that immune signaling through the maternal, placental, and fetal compartments contribute to these phenotypical changes, it is unknown to what extent the stress response to illness is involved and how it can be harnessed for potential interventions. To this end, pregnant rat dams were treated with the clinically available 11β-hydroxylase inhibitor metyrapone, alongside administration of the bacterial mimetic lipopolysaccharide (LPS), on gestational day 15. Maternal, placental, and fetal CNS levels of corticosterone and placental 11ßHSD enzymes type 1 and 2 were measured 3-hrs post treatment. Subsequently, offspring social behaviors were measured across critical phases of development. MIA was associated with increased maternal, placental, and fetal CNS corticosterone concentrations that were diminished with metyrapone exposure. Metyrapone protected against reductions in placental 11ßHSD2 in males only, suggesting that less corticosterone was inactivated in female placentas. Behaviorally, metyrapone-exposure protected against MIA-induced social disruptions in juvenile, adolescent, and adult males, while females were unaffected or performed worse. Transcriptomic analyses revealed that metyrapone-exposure triggered opposing effects on gene expression to combat MIA-exposure in males, but not among females. Taken together, these findings illustrate that MIA-induced HPA responses act alongside the immune system to produce behavioral deficits. As a clinical drug already provided to pregnant people and neonates for the treatment of hypercortisolism, the sex-specific benefits and constraints of metyrapone should be investigated further as a potential means of reducing neurodevelopmental risks due to gestational MIA.
2023-08-15 | GSE240604 | GEO
Project description:We used full genome microarrays to profile the full lifetime of the mouse placenta from embryonic day 8.5 (e8.5), at the time of chorioallantoic fusion, until postnatal day 0 (P0). At each stage, the fetal placenta and maternal decidual tissues were dissected and profiled separately Experiment Overall Design: Mouse placentas were obtained from timed pregnant female mice at each timepoint, and fetal tissues were used to confirm embryo staging. Fetal placenta and maternal decidual tissues were dissected and pooled separately for each litter prior to RNA extraction and hybridization on Affymetrix microarrays.
2008-06-11 | E-GEOD-11220 | biostudies-arrayexpress