Transcriptomic changes in the ovine caruncular endometrium following imbalanced nutrition and FSH-induced ovarian hyperstimulation
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PROVIDER: PRJNA952638 | ENA |
REPOSITORIES: ENA
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Project description:Imbalanced nutrition and exogenous gonadotrophins affect uterine function and morphology. In sheep, FSH-induced superovulation causes morphological alterations in the uterus, leading, i.e., to an increase in lipid droplets. Similarly, depending on diet, FSH treatment alters the expression of estrogen and progesterone receptors and of adhesion molecules. To broad the knowledge regarding imbalanced nutrition and carry-over effects of superovulation induced with FSH in the caruncular endometrium, deep RNA sequencing (NGS, RNA-Seq) was applied, followed by functional analysis. Ewes (n = 3-5/group) were divided as follows: control fed (CF), overfed (OF), and underfed (UF), and each group was further treated with FSH (superovulated (SOV)) or saline (negative controls (CONT)). Samples were collected on day 10 of diestrus. Furthermore, samples from CF_CONT were collected on day 5 to assess time-dependent changes. The 1484 differentially expressed genes (DEGs, P < 0.01, FDR < 0.05) identified between CF_CONT animals at days 5 and 10 were associated with increased immune activity and cellular metabolic processes and decreased cellular proliferation. In CONT animals, unbalanced nutrition (i.e., both OF and UF) was associated with enrichment of terms associated with cell adhesion and differentiation, immune response and angiogenesis. As for carry-over effects of FSH, higher number of DEGs were found for CF animals (1374), than in OF (168) or UF (18) samples, associated with dysregulation of cell cycle and hormonal sensitivity. The absence of genes concomitantly affected by SOV at all different feeding regimes suggested multidirectional and body condition-dependent effects of FSH in caruncular transcriptome. Both body condition and SOV appear to affect the homeostasis of the ovine caruncles, possibly involving the modulation of uterine receptivity.
2024-04-19 | GSE229048 | GEO
Project description:Developmental programming is the concept that environmental factors, particularly during foetal life, can alter development, metabolism and physiology of an organism and this can have consequences later in life. There is growing interest in developmental programming in livestock species, particularly effects of maternal pregnancy nutrition, which is easy to manipulate. Recent research, using a sheep model, has shown that milk production in ewe offspring may be susceptible to maternal nutritional programming, such that over nutrition (ad libitum) of the pregnant dam, compared with maintenance nutrition, may impair their first lactation performance and result in the weaning of lighter lambs. RNA-seq was performed to identify gene expression differences as a result of maternal nutrition in ewe offspring during their first parity. Samples were collected in late pregnancy and during lactation, allowing us to examine gene expression changes during maturation of the ovine mammary gland.
2015-07-29 | GSE71424 | GEO
Project description:Developmental programming is the concept that environmental factors, particularly during foetal life, can alter development, metabolism and physiology of an organism and this can have consequences later in life. There is growing interest in developmental programming in livestock species, particularly effects of maternal pregnancy nutrition, which is easy to manipulate. Recent research, using a sheep model, has shown that milk production in ewe offspring may be susceptible to maternal nutritional programming, such that over nutrition (ad libitum) of the pregnant dam, compared with maintenance nutrition, may impair their first lactation performance and result in the weaning of lighter lambs. RNA-seq was performed to identify gene expression differences as a result of maternal nutrition in ewe offspring during their first parity. Samples were collected in late pregnancy and during lactation, allowing us to examine gene expression changes during maturation of the ovine mammary gland. Three biological replicates were sequenced for each of the treatment conditions (maternal nutrition: sub-maintenance, maintenance, and ad libitum) and time points (late pregnancy and lactation). Each biological replicate consisted of RNA from multiple individuals (late pregnancy n=3, lactation n=2).
2015-07-29 | E-GEOD-71424 | biostudies-arrayexpress
Project description:Mannheimia haemolytica strain:ovine | isolate:ovine Genome sequencing and assembly
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Project description:To unravel the genes that underpin the effects of FSH on spermatogenesis, testicular gene expression was compared in juvenile rats after FSH suppression to littermate controls. Based on existing data, it is apparent that the dominant function of FSH shifts between 9 and 18 day postpartum (dpp) during the first wave of spermatogenesis from driving Sertoli cell proliferation to support of germ cells. To enable comprehensive analysis of the impact of acute in vivo FSH suppression on Sertoli and germ cell development and to determine the genes that underpin these affects, FSH was selectively suppressed in Sprague Dawley rats by passive immunisation for 4 days prior to testis collection at 18 days postpartum. FSH suppression did not affect Sertoli cell proliferation at 18 dpp, but germ cell numbers were decreased at 18 dpp following FSH suppression, with a corresponding increase in germ cell apoptosis measured. Sixty transcripts were measured as changed at 18 dpp in response to 4 days of FSH suppression, as assessed using Affymetrix™ microarrays. Some of these are known as Sertoli cell-derived FSH-responsive genes (e.g. StAR, cathepsin L, insulin-like growth factor binding protein-3), while others encode proteins involved in cell cycle and survival regulation (e.g. cyclin D1, scavenger receptor class B 1). These data demonstrate that FSH affects germ cells in vivo, by supporting germ cell viability at day 18. This model enabled identification of candidate genes that contribute to the FSH-mediated pathway by which Sertoli cells support germ cells. Keywords: time course
2008-01-29 | GSE10293 | GEO
Project description:Establishment of pregnancy in ruminants requires blastocyst growth to form an elongated conceptus that produces interferon tau, the pregnancy recognition signal, and initiates implantation. Blastocyst growth and development requires secretions from the uterine endometrium. An early increase in circulating concentrations of progesterone (P4) stimulates blastocyst growth and elongation in ruminants. This study utilized sheep as a model to identify candidate genes and regulatory networks in the endometrium that govern pre-implantation blastocyst growth and development. Ewes were treated daily with either P4 or corn oil (CO) vehicle from day 1.5 after mating to either day 9 or day 12 of pregnancy when endometrium was obtained by hysterectomy. Microarray analyses revealed many differentially expressed genes in the endometria affected by day of pregnancy and early P4 treatment. In situ hybridization analyses revealed that many of the differentially expressed genes were expressed in a cell-specific manner within the endometrium. The Database for Annotation, Visualization, and Integrated Discovery (DAVID) was used to identify functional groups of genes and biological processes in the endometrium that are associated with growth and development of pre-implantation blastocysts. Notably, biological processes affected by day of pregnancy and/or early P4 treatment included lipid biosynthesis and metabolism, angiogenesis, transport, extracellular space, defense and inflammatory response, proteolysis, amino acid transport and metabolism, and hormone metabolism. This transcriptomic data provides novel insights into the biology of endometrial function and pre-implantation blastocyst growth and development in sheep.
2009-08-01 | GSE17401 | GEO
Project description:Study the effect of recombinant human FSH supplementation in the in vitro maturation medium for an incubation of 6 hrs on the transcriptomics of bovine cumulus cells. 3 biological replicates of cumulus cells derived from cumulus oocyte complexes (COCs) supplemented with FSH (CC-FSH) vs. cumulus cells without FSH (Ct-6H, REFERENCE) were contrasted. Each replicate was subjected to a dye-swap procedure.
2015-07-01 | E-GEOD-67970 | biostudies-arrayexpress