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Maternal gestational nutrition perturbs offspring sperm epigenome in sheep

ABSTRACT: Maternal gestational nutrition perturbs offspring sperm epigenome in sheep

PROVIDER: PRJNA938147 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR23598470_1.fastq.gz	Fastqsanger.gz
	SRR23598470_2.fastq.gz	Fastqsanger.gz
	SRR23598471_1.fastq.gz	Fastqsanger.gz
	SRR23598471_2.fastq.gz	Fastqsanger.gz
	SRR23598472_1.fastq.gz	Fastqsanger.gz

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Maternal gestational nutrition perturbs offspring sperm epigenome in sheep [ncRNA-seq]

Project description:There is a growing body of evidence that inadequate maternal nutrition during gestation can have immediate and life-long effects on offspring. However, little is known about the reproductive effects of maternal gestational nutrition in offspring males. Here, using a sheep model of poor maternal nutrition (restricted- or over-feeding) during gestation, we found that poor maternal gestational nutrition does not affect semen characteristics (i.e. volume, sperm concentration, pH, sperm motility, sperm morphology) and scrotal circumference in offspring. However, by evaluating associations between poor maternal gestational nutrition and altered small non-cording RNAs (sncRNAs) and DNA methylation in offspring sperm, we demonstrated that poor maternal gestational nutrition alters sperm sncRNA composition and expression. Whole genome bisulfite sequencing further identified genomic regions with increased or decreased DNA methylation in sperm in response to poor maternal gestational nutrition. These findings imply that maternal diet-induced epigenetic errors can accumulate in sperm to worsen developmental outcomes of future generations.

2024-04-04 | GSE225985 | GEO

Maternal gestational nutrition perturbs offspring sperm epigenome in sheep [BiSulfite-seq]

2024-04-04 | GSE225924 | GEO

Maternal gestational nutrition perturbs offspring sperm epigenome in sheep [ncRNA-seq]

Project description:Maternal gestational nutrition perturbs offspring sperm epigenome in sheep [ncRNA-seq]

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Maternal gestational nutrition perturbs offspring sperm epigenome in sheep [BiSulfite-seq]

Project description:Maternal gestational nutrition perturbs offspring sperm epigenome in sheep [BiSulfite-seq]

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Maternal gestational nutrition perturbs offspring sperm epigenome in sheep

Project description:This SuperSeries is composed of the SubSeries listed below.

2024-04-04 | GSE225988 | GEO

Gestational Exposure to Air Pollutants Perturbs Metabolic and Placenta-Fetal Phenotype

Project description:Gestational Exposure to Air Pollutants Perturbs Metabolic and Placenta-Fetal Phenotype

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Enhanced pre-pubertal nutrition upregulates mitochondrial function in the testes and sperm of post-pubertal Holstein bulls

Project description:Recent studies have documented the profound impact of pre-pubertal nutrition on reproductive performance in bulls. Previously, a high plane of nutrition during calfhood (2-30 wk) in beef and dairy bulls hastened puberty explained by an increase in the level of reproductive hormones (LH, testosterone and IGF-I) pre-pubertally, compared to bulls fed less than recommended amounts of energy and protein with no apparent effect on sperm function evaluated by traditional techniques. In addition, upregulated steroid biosynthesis and Sertoli cell maturation was identified in the testicular tissue of high diet bulls at 16 and 24 weeks, respectively. The objective of this study was to evaluate the post- pubertal testes for responses to high (20.0% CP, 67.9% TDN), medium (17.0% CP, 66.0% TDN) and low (12.2% CP, 62.9% TDN) diets fed from 2-30 wk of life. Based on RNA sequencing data, 497 genes were differentially expressed in high vs low diet and 2961 genes in high vs medium diet (P<0.1). According to KEGG analysis, oxidative phosphorylation and ribosome pathways were upregulated in the high diet group (vs medium and low) with majority of the upregulated genes encoding for essential subunits of complex I, III, IV and V of OXYPHOS pathway. In addition, mitochondrial translation, mitotic nuclear division and cell division were enriched in the high vs medium diet group. Supporting the above, the percentage of sperm exhibiting loss of mitochondrial function was lower in the high diet compared to the medium diet (P<0.1). Thus, enhanced early life nutrition upregulated mitochondrial function in both the testes and sperm of post-pubertal Holstein bulls.

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Gestational chronodisruption throughout pregnancy impairs adipose tissue physiology in the offspring

Project description:Compelling evidence supports that gestational chronodisruption induces major changes in maternal circadian rhythms, fetal development and that these changes impact adult life at many physiological levels. Using a rat model of chronic photoperiod shifting throughout gestation (CPS), we investigated the detrimental effects of gestational CPS on glucose homeostasis, adipose tissue physiology and metabolism in the adult male offspring. At proteomic level, in CPS adipose tissue, 275 proteins displayed differential expression, compared with LD animals fed with a standard diet. Interestingly, CPS offspring and LD fed with HFD showed 20 proteins in common (2 upregulated 18 downregulated). Based on these common proteins, the IPA analysis found that 2 functional pathways were significantly altered; the network 1 (AKT/ERK) and the network 2 (TNF/IL4).

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2020-12-08 | GSE150500 | GEO

Gestational Exposure to Air Pollutants Perturbs Metabolic and Placenta-Fetal Phenotype

Project description:Introduction: Air pollution is detrimental to a pregnancy with adverse effects in mother and child. It is also known to increase pregnancy complications including risk factors of gestational diabetes. Methods: We investigated the impact of intra-nasal instilled air pollutants upon gestational day 16-19 maternal mouse cardiovascular and metabolic status, placental nutrient transporters, and placental-fetal size and morphology. To further unravel mechanisms, we also examined placental total DNA 5’-hydroxymethylation and bulk RNA sequenced gene expression profiles. Results: Air pollution exposed pregnant mice were tachycardic, hyperglycemic, glucose intolerant and insulin resistant, with no major placental glucose and fatty acid transporter changes, except for a spatial disruption of cells expressing GLUT10 that imports L-dehydroascorbic acid in protecting against oxidative stress. Placentas revealed inflammatory cellular infiltration with associated cellular edema and necrosis, with a paucity of vascularity and hemorrhage. While individual fetal body weights increased, they suffered a reduction in brain cortical thickness. Placental total DNA 5’-hydroxymethylation was 2.5-fold higher, with perturbed gene expression profiles involving key metabolic, inflammatory, transcriptional, cellular polarizing and processing genes and pathways. Discussion: We conclude that gestational exposure to air pollutants incites a maternal inflammatory response resulting in features of maternal gestational diabetes mellitus with altered placental gene expression with associated injury to the placental-fetal unit. Thus, air pollutants adversely impact the health of mother and offspring.

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