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Developmental Programming: Impact of prenatal testosterone excess on liver and muscle transcriptome and the relationship between non-coding and coding RNA networks in female sheep [ncRNA-seq]

ABSTRACT: This study seeks to assess the effects of prenatal exposure of female sheep to execessive testosterone in metabolically relevant liver and muscle tissue. The goals are to 1) determine noncoding RNA in the control animals and 2) assess the effects of prenatal T-treatment on non-coding RNA. 3) Finally identify putative ncRNA-totalRNA interactions.

ORGANISM(S): Ovis aries

PROVIDER: GSE178775 | GEO | 2021/10/31

REPOSITORIES: GEO

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Developmental Programming: Impact of prenatal testosterone excess on liver and muscle transcriptome and the relationship between non-coding and coding RNA networks in female sheep [RNA-seq]

Project description:This study seeks to assess the effects of prenatal exposure of female sheep to execessive testosterone in metabolically relevant liver and muscle tissue. The goals are to 1) determine genes and gene pathways in the control animals and 2) assess the effects of prenatal T-treatment on gene expression and gene pathways. 3) Finally identify putative ncRNA-totalRNA interactions.

2021-10-31 | GSE178774 | GEO

Developmental Programming: Adipose Depot-Specific Transcriptional Regulation by Prenatal Testosterone Excess in a Sheep Model of PCOS

Project description:This study seeks to undertake an assessment of the effects of prenatal exposure of female sheep to excess testosterone, the estrogen precursor, in four different adipose depots. The depots investigated are subcutaneous adipose tissue (SAT) - a fat beneath the skin storing >80% of total body fat in the human body, visceral adipose tissue (VAT) - an intra-abdominal fat primarily associated with digestive system organs, and smaller depots such as epicardial adipose tissue (ECAT) and perirenal adipose tissue (PRAT) that serve specialized functions associated with the organs/tissues in their proximity. The goals are to 1) determine gene expression and gene network profiles in the depots; 2) assess prenatal T-treatment induced disruptions in adipose depot-specific gene expression and gene networks; and 3) identify common and divergent gene and gene pathways underlying depot-specific disruption in prenatal T-treated female sheep.

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Developmental Programming: Impact of prenatal testosterone excess on liver and muscle transcriptome and the relationship between non-coding and coding RNA networks in female sheep

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

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Developmental Programming: Prenatal Testosterone Excess on Liver and Muscle Coding and Noncoding RNA in Female Sheep.

Project description:Prenatal testosterone (T)-treated female sheep manifest peripheral insulin resistance, ectopic lipid accumulation, and insulin signaling disruption in liver and muscle. This study investigated transcriptional changes and transcriptome signature of prenatal T excess-induced hepatic and muscle-specific metabolic disruptions. Genome-wide coding and noncoding (nc) RNA expression in liver and muscle from 21-month-old prenatal T-treated (T propionate 100 mg intramuscular twice weekly from days 30-90 of gestation; term: 147 days) and control females were compared. Prenatal T (1) induced differential expression of messenger RNAs (mRNAs) in liver (15 down, 17 up) and muscle (66 down, 176 up) (false discovery rate < 0.05, absolute log2 fold change > 0.5); (2) downregulated mitochondrial pathway genes in liver and muscle; (3) downregulated hepatic lipid catabolism and peroxisome proliferator-activated receptor (PPAR) signaling gene pathways; (4) modulated noncoding RNA (ncRNA) metabolic processes gene pathway in muscle; and (5) downregulated 5 uncharacterized long noncoding RNA (lncRNA) in the muscle but no ncRNA changes in the liver. Correlation analysis showed downregulation of lncRNAs LOC114112974 and LOC105607806 was associated with decreased TPK1, and LOC114113790 with increased ZNF470 expression. Orthogonal projections to latent structures discriminant analysis identified mRNAs HADHA and SLC25A45, and microRNAs MIR154A, MIR25, and MIR487B in the liver and ARIH1 and ITCH and miRNAs MIR369, MIR10A, and MIR10B in muscle as potential biomarkers of prenatal T excess. These findings suggest downregulation of mitochondria, lipid catabolism, and PPAR signaling genes in the liver and dysregulation of mitochondrial and ncRNA gene pathways in muscle are contributors of lipotoxic and insulin-resistant hepatic and muscle phenotype. Gestational T excess programming of metabolic dysfunctions involve tissue-specific ncRNA-modulated transcriptional changes.

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Developmental Programming: Impact of prenatal testosterone excess on liver and muscle transcriptome and the relationship between non-coding and coding RNA networks in female sheep [ncRNA-seq]

Project description:Developmental Programming: Impact of prenatal testosterone excess on liver and muscle transcriptome and the relationship between non-coding and coding RNA networks in female sheep [ncRNA-seq]

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Developmental Programming: Sheep Granulosa and Theca Cell-Specific Transcriptional Regulation by Prenatal Testosterone

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Developmental Programming: Prenatal Testosterone Excess and Insulin Signaling Disruptions in Female Sheep.

Project description:Women with polycystic ovary syndrome often manifest insulin resistance. Using a sheep model of polycystic ovary syndrome-like phenotype, we explored the contribution of androgen and insulin in programming and maintaining disruptions in insulin signaling in metabolic tissues. Phosphorylation of AKT, ERK, GSK3beta, mTOR, and p70S6K was examined in the liver, muscle, and adipose tissue of control and prenatal testosterone (T)-, prenatal T plus androgen antagonist (flutamide)-, and prenatal T plus insulin sensitizer (rosiglitazone)-treated fetuses as well as 2-yr-old females. Insulin-stimulated phospho (p)-AKT was evaluated in control and prenatal T-, prenatal T plus postnatal flutamide-, and prenatal T plus postnatal rosiglitazone-treated females at 3 yr of age. GLUT4 expression was evaluated in the muscle at all time points. Prenatal T treatment increased mTOR, p-p70S6K, and p-GSK3beta levels in the fetal liver with both androgen antagonist and insulin sensitizer preventing the mTOR increase. Both interventions had partial effect in preventing the increase in p-GSK3beta. In the fetal muscle, prenatal T excess decreased p-GSK3beta and GLUT4. The decrease in muscle p-GSK3beta was partially prevented by insulin sensitizer cotreatment. Both interventions partially prevented the decrease in GLUT4. Prenatal T treatment had no effect on basal expression of any of the markers in 2-yr-old females. At 3 yr of age, prenatal T treatment prevented the insulin-stimulated increase in p-AKT in liver and muscle, but not in adipose tissue, and neither postnatal intervention restored p-AKT response to insulin stimulation. Our findings provide evidence that prenatal T excess changes insulin sensitivity in a tissue- and development-specific manner and that both androgens and insulin may be involved in the programming of these metabolic disruptions.

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Developmental Programming: Impact of prenatal testosterone excess on liver and muscle transcriptome and the relationship between non-coding and coding RNA networks in female sheep

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Developmental Programming: adipose depot-specific regulation of non-coding RNAs and their relation to coding RNA expression in prenatal testosterone and prenatal bisphenol-A -treated female sheep

Project description:Inappropriate developmental exposure to steroids is linked to metabolic disorders. Prenatal testosterone excess or bisphenol A (BPA, an environmental estrogen mimic) leads to insulin resistance and adipocyte disruptions in female sheep. Adipocytes are key regulators of insulin sensitivity and tissue-specific differences in insulin sensitivity, coupled with adipose depot-specific changes in key mRNAs, were previously observed. We hypothesized that depot-specific changes in the non-coding RNA (ncRNA) regulators of gene expression would prevail to account for the direction of changes seen in mRNAs. Noncoding RNA (lncRNA, miRNA, snoRNA, snRNA) from various adipose depots of prenatal testosterone and BPA-treated animals were sequenced. Adipose depot-specific changes in the ncRNA that are consistent with the depot-specific mRNA expression in terms of directionality of changes and functional implications in insulin resistance, adipocyte differentiation and cardiac hypertrophy were found. Importantly, the adipose depot-specific ncRNA changes were model-specific that were mutually exclusive suggestive of different regulatory entry points in this regulation.

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Developmental Programming: Impact of prenatal testosterone excess on liver and muscle transcriptome and the relationship between non-coding and coding RNA networks in female sheep [RNA-seq]

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