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Multi-omics Analysis Revealing the Impact of Excessive Maternal Folate Supplementation on Offspring Brain Development [spatial transcriptome]

ABSTRACT: Folate is crucial for diverse biological processes including neurogenesis. While folate supplementation during pregnancy is standard for preventing neural tube defects (NTDs), concerns are growing over the potential risks of excessive maternal intake. In this study, we employed spatial transcriptomics and single-nucleus multi-omics techniques to investigate the impact of increased maternal folate intake on offspring brain development. Elevated folate intake broadly affected gene pathways linked to neurogenesis and neuronal axon myelination across multiple brain regions. Furthermore, specific gene expression alterations related to learning and memory processes emerged in thalamic and ventricular regions. Single-nucleus multi-omics analysis revealed that maturing excitatory neurons in dentate gyrus are particularly vulnerable to suboptimal maternal folate intake. Aberrant gene expression and chromatin accessibility changes were primarily centered on pathways governing ribosomal biogenesis, which is critical for synaptic formation. Altogether, our findings provide novel insights into how excessive maternal folate supplementation affects offspring brain development, notably by influencing gene expression and chromatin accessibility.

ORGANISM(S): Mus musculus

PROVIDER: GSE269543 | GEO | 2024/07/10

REPOSITORIES: GEO

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Multi-omics Analysis Revealing the Impact of Excessive Maternal Folate Supplementation on Offspring Brain Development [single nuclei multiome]

Project description:Folate is crucial for diverse biological processes including neurogenesis. While folate supplementation during pregnancy is standard for preventing neural tube defects (NTDs), concerns are growing over the potential risks of excessive maternal intake. In this study, we employed spatial transcriptomics and single-nucleus multi-omics techniques to investigate the impact of increased maternal folate intake on offspring brain development. Elevated folate intake broadly affected gene pathways linked to neurogenesis and neuronal axon myelination across multiple brain regions. Furthermore, specific gene expression alterations related to learning and memory processes emerged in thalamic and ventricular regions. Single-nucleus multi-omics analysis revealed that maturing excitatory neurons in dentate gyrus are particularly vulnerable to suboptimal maternal folate intake. Aberrant gene expression and chromatin accessibility changes were primarily centered on pathways governing ribosomal biogenesis, which is critical for synaptic formation. Altogether, our findings provide novel insights into how excessive maternal folate supplementation affects offspring brain development, notably by influencing gene expression and chromatin accessibility.

2024-07-10 | GSE269544 | GEO

Multi-omics Analysis Revealing the Impact of Excessive Maternal Folate Supplementation on Offspring Brain Development [spatial transcriptome]

Project description:Multi-omics Analysis Revealing the Impact of Excessive Maternal Folate Supplementation on Offspring Brain Development [spatial transcriptome]

| PRJNA1122482 | ENA

Multi-omics Analysis Revealing the Impact of Excessive Maternal Folate Supplementation on Offspring Brain Development [single nuclei multiome]

Project description:Multi-omics Analysis Revealing the Impact of Excessive Maternal Folate Supplementation on Offspring Brain Development [single nuclei multiome]

| PRJNA1122483 | ENA

Organ-specific gene expression changes in the fetal liver and placenta in response to maternal folate depletion

Project description:Growing evidence supports the hypothesis that the in utero environment can have profound implications for fetal development and for offspring health in later life. Current theory suggests that conditions experienced in utero prepare, or ‘programme’, the fetus for its anticipated post-natal environment. The mechanisms responsible for these programming events are poorly understood but are likely to involve gene expression changes. Folate is essential for normal fetal development and inadequate maternal folate supply during pregnancy has long term adverse effects on the offspring. We tested the hypothesis that inadequate folate supply during pregnancy alters offspring programming through altered gene expression. Female C57BL/6J mice were fed diets containing 2 mg folic acid/kg or 0.4 mg folic acid/kg for 4 weeks before mating and throughout pregnancy. At 17.5 day gestation, genome-wide gene expression in fetal liver and placenta of male offspring was measured by microarray analysis. In the fetal liver, 989 genes (555 up-regulated, 434 down-regulated) were expressed differentially in response to maternal folate depletion, with 460 genes expressed differentially (250 up-regulated, 255 down-regulated) in the placenta. Only 25 differentially expressed genes were common between organs, revealing that maternal folate intake during pregnancy influences fetal gene expression in a highly organ specific manner which, we propose, reflects prioritised protection of essential organ-specific functions.

2016-06-14 | E-MTAB-3940 | biostudies-arrayexpress

Maternal folic acid overconsumption in mice leads to sex-specific transcriptional alterations in cerebral cortex in offspring

Project description:Recent concerns have been raised regarding high folate intake during pregnancy and lactation, particularly following food fortiﬁcation and increased vitamin supplement use. Epidemiologic studies have shown that high folic acid (FA) intake can negatively impact motor and neurocognitive development in offspring. We used microarray to investigate the mechanisms by which a supplemented diet containing 5-fold higher FA than recommended (FASD) affects brain function in both male and female offspring.

2024-03-03 | GSE134588 | GEO

Multi-omics data integration reveals sex-dependent hippocampal programming by maternal high-fat diet during lactation in adult mouse offspring

Project description:Early-life exposure to high-fat diet (HF) can program metabolic and cognitive alterations in adult offspring. Although the hippocampus plays a crucial role in memory and metabolic homeostasis, few studies reported the impact of maternal HF on this structure. We assessed the effects of maternal HF during lactation on physiological, metabolic and cognitive parameters in young adult offspring mice. To identify early-programming mechanisms in hippocampus, we developed a multi-omics strategy in male and female offspring. Maternal HF induced a transient increased body weight at weaning, a mild glucose intolerance only in 3-month-old male mice with no change in plasma metabolic parameters in adult male and female offspring. Behavioral alterations revealed by Barnes maze test were observed both in 6-month-old male and female mice. Multi-omics strategy unveiled sex-specific transcriptomic and proteomic modifications in the hippocampus of adult offspring. These studies, that were confirmed by regulon analysis, showing that, although genes whose expression was modified by maternal HF were different between sexes, the main pathways affected were similar with mitochondria and synapses as main hippocampal targets of maternal HF. The effects of maternal HF reported here may help to better characterize sex-dependent molecular pathways involved in cognitive disorders and neurodegenerative diseases.

2024-01-26 | PXD045639 | Pride

Maternal folate depletion during early development and high fat feeding from weaning elicit similar changes in gene expression, but not in DNA methylation, in adult offspring (Gene expression data)

Project description:Scope: The âPredictive Adaptive Responseâ hypothesis suggests the in utero environment when mismatched with the post-natal environment can influence later life health. Underlying mechanisms are poorly understood, but may involve gene transcription changes, regulated via epigenetic mechanisms. Methods and Results: In a 2x2 factorial design, female C57Bl/6 mice were randomised to low or normal folate diets (0.4mg/ or 2mg folic acid/kg diet) prior to and during pregnancy and lactation with. At weaning, offspring were randomised to high or low fat diets at weaning. Genome-wide gene expression and promoter DNA methylation were measured using microarrays in adult male livers. Maternal folate depletion and high fat intake post-weaning influenced gene expression (1959 and 1612 genes respectively) and promoter DNA methylation (208 and 344 loci respectively) but changes in expression and methylation were poorly matched for both dietary interventions. Expression of 667 genes was altered in response to both maternal folate depletion and post-weaning high fat feeding. In addition, there was evidence that the combined dietary insult (i.e. maternal folate depletion followed by high fat post-weaning) exerted the largest expression change for most of these genes. Conclusion: Our observations align with, and provide evidence in support of a potential underlying mechanism for, the âPredictive Adaptive Responseâ hypothesis. Elucidation of these mechanisms may identify targets for interventions to mitigate effects of adverse nutrition exposures during early development on disease risk in later life.

2017-05-22 | E-MTAB-4987 | biostudies-arrayexpress

Maternal folate depletion during early development and high fat feeding from weaning elicit similar changes in gene expression, but not in DNA methylation, in adult offspring (DNA methylation data)

Project description:Abstract Scope: The âPredictive Adaptive Responseâ hypothesis suggests the in utero environment when mismatched with the post-natal environment can influence later life health. Underlying mechanisms are poorly understood, but may involve gene transcription changes, regulated via epigenetic mechanisms. Methods and Results: In a 2x2 factorial design, female C57Bl/6 mice were randomised to low or normal folate diets (0.4mg/2mg folic acid/kg diet) prior to and during pregnancy and lactation with, offspring randomised to high or low fat diets at weaning. Genome-wide gene expression and promoter DNA methylation were measured using microarrays in adult male livers. Maternal folate depletion and high fat intake post-weaning influenced gene expression (1959 and 1612 genes respectively) and promoter DNA methylation (208 and 344 loci respectively) but changes in expression and methylation were poorly matched for both dietary interventions. Expression of 667 genes was altered in response to both maternal folate depletion and post-weaning high fat feeding. In addition, there was evidence that the combined dietary insult (i.e. maternal folate depletion followed by high fat post-weaning) exerted the largest expression change for most of these genes. Conclusion: Our observations align with, and provide evidence in support of a potential underlying mechanism for, the âPredictive Adaptive Responseâ hypothesis. Elucidation of these mechanisms may identify targets for interventions to mitigate effects of adverse nutrition exposures during early development on disease risk in later life.

2017-05-22 | E-MTAB-4990 | biostudies-arrayexpress

Multi-omic brain and behavioral correlates of cell-free fetal DNA methylation in macaque maternal obesity models

Project description:Maternal obesity during pregnancy is associated with neurodevelopmental disorder (NDD) risk. We utilized integrative multi-omics to examine maternal obesity effects on offspring neurodevelopment in rhesus macaques by comparison to lean controls and two interventions. Differentially methylated regions (DMRs) from longitudinal maternal blood-derived cell-free fetal DNA (cffDNA) significantly overlapped with DMRs from infant brain. The DMRs were enriched for neurodevelopmental functions, methylation-sensitive developmental transcription factor motifs, and human NDD DMRs identified from brain and placenta. Brain and cffDNA methylation levels from a large region overlapping mir-663 correlated with maternal obesity, metabolic and immune markers, and infant behavior. A DUX4 hippocampal co-methylation network correlated with maternal obesity, infant behavior, infant hippocampal lipidomic and metabolomic profiles, and maternal blood measurements of DUX4 cffDNA methylation, cytokines, and metabolites. We conclude that in this model, maternal obesity was associated with changes in the infant brain and behavior, and these differences were detectable in pregnancy through integrative analyses of cffDNA methylation with immune and metabolic factors.

2022-08-23 | GSE171064 | GEO

Remodeling of the Epigenetic Landscape in Rainbow Trout, Oncorhynchus mykiss, Offspring in Response to Maternal Choline Intake

Project description:The objective of this paper was to determine whether shifts in the methylome in rainbow trout (Oncorhynchus mykiss) are correlated with transcriptomic changes during early development in response to maternal dietary choline intake. Three experimental diets were formulated to have different levels of choline: (a) 2065 ppm choline (Low Choline, 0% supplementation), (b) 5657 ppm choline (Medium Choline, 0.6% supplementation), and (c) 9248 ppm choline (High Choline, 1.2% choline supplementation). Six rainbow trout families were fed experimental diets beginning 18 months post-hatch until spawning; their offspring were fed a commercial diet. Reduced representational bisulfite sequencing (RRBS) was utilized to measure genome-wide methylation differences in offspring immediately after hatching. When comparing to the Medium Choline offspring, differential DNA methylation occurred more in the Low Choline offspring than High Choline, especially in genic features like promoters. The differentially methylated CpGs (q ≤ 0.01) were identified evenly between CpG islands and shores in the genome, mostly found in the introns of genes. Genes such as fabp2 and leap2B associated with protein binding, fatty acid binding, DNA binding, and response to bacteria were differentially methylated and detected as differentially regulated genes by previous RNA-seq analysis. Although these findings indicate that levels of dietary choline available in broodstock diets alters offspring DNA methylation; most differentially expressed genes were not associated with differential DNA methylation, suggesting additional mechanisms playing a role in regulating gene expression in response to maternal choline intake.

2024-11-21 | GSE269087 | GEO

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