Expression Profiling of Term Placenta in Viviparous Mammals by RNA-Seq
Ontology highlight
ABSTRACT:
ORGANISM(S): Dasypus novemcinctus
SUBMITTER: Don Armstrong
PROVIDER: E-GEOD-79121 | biostudies-arrayexpress |
REPOSITORIES: biostudies-arrayexpress
Similar Datasets
Project description:Over the last 20-80 million years the mammalian placenta has taken on a variety of morphologies through both divergent and convergent evolution. Recently we have shown that the human placenta genome has a unique epigenetic pattern of large partially methylated domains (PMDs) and highly methylation domains (HMDs) with gene body DNA methylation positively correlating with level of gene expression. In order to determine the evolutionary conservation of DNA methylation patterns and transcriptional regulatory programs in the placenta, we performed a genome-wide methylome (MethylC-seq) analysis of human, rhesus macaque, squirrel monkey, mouse, dog, horse, and cow placentas as well as opossum extraembryonic membrane. We found that, similar to human placenta, mammalian placentas and opossum extraembryonic membrane have globally lower levels of methylation compared to somatic tissues. However, not all species have clear PMD/HMDs in their placentas. Instead what is conserved is higher methylation over the bodies of genes involved in mitosis, vesicle-mediated transport, protein phosphorylation, and chromatin modification compared with the rest of the genome. As in human placenta, high gene body methylation is associated with higher gene expression across species. Analysis of DNA methylation in mouse and cow oocytes shows the same pattern of gene body methylation over many of the same genes as in the placenta, suggesting that this conserved pattern of active gene body methylation of the placenta may be established very early in development. MethylC-seq on placentas of 7 mammals, trophoblasts of rhesus, brains of 3 mammals, oocytes of cow, and human cordblood
2015-08-05 | E-GEOD-63330 | biostudies-arrayexpress
Project description:The placenta is arguably the most anatomically variable organ in mammals. Understanding gene expression patterns among placentas from multiple species can illuminate the molecular basis of placenta function as well as potentially enrich our knowledge of the biology of obstetrical syndromes. We measured the expression profiles of the term placenta of multiple therian mammals using RNA-Seq. We identified multiple genes and transcripts which are differentially expressed across lineages including prolactin, relaxin, and galectins, as well as identifying the non-housekeeping genes which are core to placenta function (such as components of annexin complexes) in all species studied.
2017-05-12 | GSE79121 | GEO
Project description:The connection between evolution of regulatory elements and downstream gene expression is incompletely understood in mammals. We carried out a large-scale comparison of matched ChIP-seq and RNA-seq experiments across twenty species of mammals, using liver as a model somatic tissue. Herein we report the RNA-seq dataset, comprising twenty five species of mammals. When analysed alongside our previously reported ChIP-seq experiments, these data reveal a number of insights into how mammalian regulatory evolution propagates into differences in gene expression levels. Please note that all mouse RNA-seq libraries and three out of four human libraries have been previously reported in Array Express submission E-MTAB-4052 and are thus omitted here.
2017-10-11 | E-MTAB-4550 | biostudies-arrayexpress
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:We generated RNA-Seq data for Rhesus monkey placenta. Together with RNA-Seq and epigenomic data generated for placentas of human and mouse, we aim to understand the evolution of gene expression and regulatory elements among the placentas of different mammalian species.
2021-07-31 | GSE153082 | GEO
Project description:We generated ChIP-Seq (H3K4me1, H3K4me3 and H3K27ac) data for term human placenta. Together with RNA-Seq and epigenomic data generated for placentas of rhesus macaque and mouse, we aim to understand the evolution of gene expression and regulatory elements among the placentas of different mammalian species.
2021-12-31 | GSE156987 | GEO
Project description:We generated ChIP-Seq (H3K4me1, H3K4me3 and H3K27ac) data for term Rhesus monkey placenta. Together with RNA-Seq and epigenomic data generated for placentas of human and mouse, we aim to understand the evolution of gene expression and regulatory elements among the placentas of different mammalian species.
2021-07-31 | GSE153083 | GEO
Project description:We hypothesized that the availability of folate, a soluble B vitamin, would alter the levels of DNA methylation in spermatogenesis with consequences for the sperm epigenome and pregnancy outcomes. We fed male mice with either a folate-deficient or a folate-sufficient diet throughout life. Males fed the folate-deficient diet had offspring with increased birth defects, which included craniofacial and musculoskeletal malformations. These phenotypes corresponded to developmental genes with altered methylation in sperm. To determine if there was transmission of epigenetic effects from sires to offspring, global gene expression levels were assessed in placenta from 18.5 dpc fetuses sired by either a folate-sufficient or folate-deficient male. Gene expression was measured in placenta of 18.5 dpc fetuses sired by either a folate sufficient male (n=4 placentas from different litters and different fathers) or a folate deficient (FD) male (n=4 placentas from different litters and different fathers).
2013-11-06 | E-GEOD-51819 | biostudies-arrayexpress
Project description:Mammals differ more than hundred fold in maximum lifespan, which can be altered in either direction during evolution, but the molecular basis for natural changes in longevity is not understood. Divergent evolution of mammals also led to extensive changes in gene expression within and between lineages. To understand the relationship between lifespan and variation in gene expression, we carried out RNA-seq-based gene expression analyses of liver, kidney and brain of 33 diverse species of mammals. Our analysis uncovered parallel evolution of gene expression and lifespan, as well as the associated life history traits, and identified the processes and pathways involved. These findings provide direct insights into how Nature reversibly adjusts lifespan and other traits during adaptive radiation of lineages. RNA-seq gene expression profiling in normal liver, kidney and brain of 33 mammalian species.
2015-02-17 | E-GEOD-43013 | biostudies-arrayexpress
Project description:Over the last 20-80 million years the mammalian placenta has taken on a variety of morphologies through both divergent and convergent evolution. Recently we have shown that the human placenta genome has a unique epigenetic pattern of large partially methylated domains (PMDs) and highly methylation domains (HMDs) with gene body DNA methylation positively correlating with level of gene expression. In order to determine the evolutionary conservation of DNA methylation patterns and transcriptional regulatory programs in the placenta, we performed a genome-wide methylome (MethylC-seq) analysis of human, rhesus macaque, squirrel monkey, mouse, dog, horse, and cow placentas as well as opossum extraembryonic membrane. We found that, similar to human placenta, mammalian placentas and opossum extraembryonic membrane have globally lower levels of methylation compared to somatic tissues. However, not all species have clear PMD/HMDs in their placentas. Instead what is conserved is higher methylation over the bodies of genes involved in mitosis, vesicle-mediated transport, protein phosphorylation, and chromatin modification compared with the rest of the genome. As in human placenta, high gene body methylation is associated with higher gene expression across species. Analysis of DNA methylation in mouse and cow oocytes shows the same pattern of gene body methylation over many of the same genes as in the placenta, suggesting that this conserved pattern of active gene body methylation of the placenta may be established very early in development.
2015-08-05 | GSE63330 | GEO