Browse
Submit Data
Databases
API
Help

Unknown,Transcriptomics,Genomics,Proteomics

Dataset Information

47 Views

0 Connections

0 Citations

0 Reanalyses

0 Downloads

Omics score: 0

RNA-Seq of human placenta: spontaneous preterm birth in the presence of intra-amniotic infection/inflammation and controls

ABSTRACT: Using RNA-sequencing (RNA-Seq and miRNA-Seq), we analyzed paired villous trophoblast and decidual basalis transcriptomes of 15 women pregnant with singleton gestations grouped as follows: (1) spontaneous preterm birth (PTB) in the setting of amniocentesis-proven intra-amniotic infection (IAI) and histological chorioamnionits (n=5; GA median [range]: 26 [25-31] weeks); (2) spontaneous idiopathic preterm birth (iPTB, n=5, GA: 32 [30-33] weeks); and (3) term normal pregnancy, that delivered a heathy infant by cesarean section in the absence of labor (n=5; GA: 39 [38-39] weeks). The primary goal of this study was to identify differentially expressed transcripts and illuminate molecular mechanisms distinguishing IAI-associated PTBs from spontaneous PTBs in the absence of IAI. We further compared iPTB specimens to term specimens to determine genes differentially regulated with advancing gestational age and following spontaneous PTB without IAI. Finally, we determined transcripts selectively expressed in either the villous trophoblast or decidua basalis in each clinical context. Raw data for this study are not available because consent forms do not allow for public access to raw data.

ORGANISM(S): Homo sapiens

SUBMITTER: William Ackerman IV

PROVIDER: E-GEOD-73712 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

ACCESS DATA

Json Xml

Similar Datasets

miRNA-Seq of human placenta: spontaneous preterm birth in the presence of intra-amniotic infection/inflammation and controls

Project description:Using RNA-sequencing (RNA-Seq and miRNA-Seq), we analyzed paired villous trophoblast and decidual basalis transcriptomes of 15 women pregnant with singleton gestations grouped as follows: (1) spontaneous preterm birth (PTB) in the setting of amniocentesis-proven intra-amniotic infection (IAI) and histological chorioamnionits (n=5; GA median [range]: 26 [25-31] weeks); (2) spontaneous idiopathic preterm birth (iPTB, n=5, GA: 32 [30-33] weeks); and (3) term normal pregnancy, that delivered a heathy infant by cesarean section in the absence of labor (n=5; GA: 39 [38-39] weeks). The primary goal of this study was to identify differentially expressed transcripts and illuminate molecular mechanisms distinguishing IAI-associated PTBs from spontaneous PTBs in the absence of IAI. We further compared iPTB specimens to term specimens to determine genes differentially regulated with advancing gestational age and following spontaneous PTB without IAI. Finally, we determined transcripts selectively expressed in either the villous trophoblast or decidua basalis in each clinical context. Raw data for this series are not available because consent forms do not allow for public access to raw data.

2016-06-14 | E-GEOD-73713 | biostudies-arrayexpress

miRNA-Seq of human placenta: spontaneous preterm birth in the presence of intra-amniotic infection/inflammation and controls

2016-06-14 | GSE73713 | GEO

RNA-Seq of human placenta: spontaneous preterm birth in the presence of intra-amniotic infection/inflammation and controls

2016-06-14 | GSE73712 | GEO

RNA-seq analysis of human placenta to elucidate the pathomechanism of spontaneous preterm birth

Project description:The pathogenesis of spontaneous preterm birth (PTB) is largely unknown. We conducted RNA-seq transcriptomic analysis, qRT-PCR and ELISA on fresh placental villous tissue from 20 spontaneous preterm and 20 spontaneous term deliveries, to identify genes and signalling pathways involved in the pathogenesis of PTB. Our differential gene expression, gene ontology and pathway analysis revealed several dysregulated genes, including OCLN, OPTN, KRT7, WNT7A, RSPO4, BAMBI, NFATC4, SLC6A13, SLC6A17, SLC26A8 and KLF8, associated with altered trophoblast functions. We identified dysregulated Wnt, oxytocin and cellular senescence signalling pathways in preterm placentas, where augmented Wnt signalling could play a pivotal role in the pathogenesis of PTB due to its diverse biological functions. We provide fresh molecular insight into the pathogenesis of spontaneous PTB, which may drive further studies to develop new predictive biomarkers and therapeutics.

2022-10-24 | GSE211927 | GEO

Integrated transcriptomics network analysis of miRNA and mRNA in human myometrium in term and preterm labor.

Project description:Myometrial biopsies were collected from 20 women undergoing primary cesarean sections in well-characterized clinical scenarios: 1) term labor of spontaneous onset (TL, n=5); 2) term non-labor (TNL, n=5); 3) spontaneous PTB in the setting of chorioamnionitis (PTB-HCA) and 4) indicated preterm birth (PTB) non-labor (PTB-NL, n=5). RNAs were profiled using 2nd-generation RNA sequencing.

2018-06-14 | GSE99853 | GEO

Quantitative Proteomic Profiling of Cervicovaginal Fluid from Pregnant Women with Term and Preterm Birth

Project description:Preterm birth (PTB) is one of major causes of perinatal mortality and neonatal morbidity, but knowledge of its complex etiology is still limited. Here we present cervicovaginal fluid (CVF) protein profiles of pregnant women who subsequently delivered at spontaneous preterm or term, aiming to identify differentially expressed CVF proteins in PTB and term birth. The CVF proteome of women who sequentially delivered at preterm and term was analyzed using isobaric tags for relative and absolute quantitation (iTRAQ) coupled with two-dimensional nanoflow liquid chromatography-tandem mass spectrometry (2D-nLC-MS/MS). We compared the CVF proteome of PTB (n=5) and control subjects (term birth, n=7) using pooled control CVF (term birth, n=20) as spike-in standard. We identified 1294 CVF proteins, of which 605 were newly identified proteins. Of 990 proteins quantified in both PTB and term birth, 52 proteins were significantly up/down-regulated in PTB compared to term birth. The differentially expressed proteins were functionally associated to immune response, endopeptidase inhibitors and structural constituent of cytoskeleton. Taken together, our study provide quantitative CVF proteome profiles of pregnant women who ultimately delivered at preterm and term. These promising results could help to improve the understanding of PTB etiology and to discover biomarkers for asymptomatic PTB.

2021-09-09 | PXD021401 | Pride

Transcriptomic phenotyping of human labor myometrium.

Project description:Myometrial biopsies were collected from 31 women undergoing primary cesarean sections and were carefully phenotyped with respect to gestational age (GA), circumstances of labor onset, and clinical status at the start and end of the intervention. Cases were aggregated into groups as follows: Group 1: term birth following spontaneous onset of term labor (TL, n=5); Group 2: term birth by elective cesarean section not in labor (TNL, n=5); Group 3: PTB following spontaneous preterm labor with intact membranes (n=6); Group 4: preterm birth following PPROM (n=8); and Group 5: provider-initiated preterm birth in the absence of active labor contractions, cervical dilation or membrane rupture (n=7). Additional phenotyping of cases spontaneously committed to PTBs (Groups 3 and 4) involved presence or absence of Triple I based on cultures of amniotic fluid obtained via clinically-indicated amniocentesis. RNAs were profiled using second generation RNA sequencing.

2021-07-20 | GSE163773 | GEO

Differentially expressed mRNA transcripts in the placenta delivered by preterm versus term spontaneous labour

Project description:We hypothesized that preterm spontaneous labor involves aberrant changes in mRNA expression in the placenta. To test this hypothesis, we interrogated the mRNA levels of >50,000 genes and transcript variants using gene expression microarray (Human Genome U133 Plus 2.0 Array, Affymetrix) on 5 placentas collected from preterm spontaneous delivery (<34 weeks of gestation) and another 5 placentas collected from term spontaneous delivery (38-39 weeks). We have identified 229 and 162 genes that were up- or down-regulated, respectively, for more than 3-fold in the preterm placentas compared to the term placentas (Mann-Whitney Rank Sum Test, with multiple testing correction by the Benjamini-Hochberg method, adjusted p-value <= 0.05). Placentas collected from (i) preterm spontaneous delivery (<34 weeks of gestation) and (ii) term spontaneous delivery (38-39 weeks of gestation) were subjected to RNA extraction and hybridization on Affymetrix microarrays. To identify gene expression patterns that are commonly involved in preterm spontaneous labour, we analyzed 5 placentas from each of these 2 groups and tested for any differentially expressed genes by Mann-Whitney Rank Sum Test.

2009-10-31 | E-GEOD-18809 | biostudies-arrayexpress

PROTEOMIC PROFILING OF AMNIOS FOR PRETERM BIRTH BIOMARKER DISCOVERY

Project description:Spontaneous preterm birth (PTB) complicates about 12% of pregnancies worldwide, remaining the main cause of neonatal morbidity and mortality. A consistent number of PTB are caused by microbial-induced preterm labor, mediated by an inflammatory process, that threatens both maternal and newborn health. In search for novel predictive biomarkers of PTB and PROM, and to improve understanding of infection related PTB, we performed a proteomic analysis of amnions from premature newborns. Samples were studied by Orbitrap mass spectrometry and bioinformatics analyses. A total of 6352 proteins were identified. A ranked core of 159 proteins maximized the discrimination between the different clinical stratification groups of amnions allowing to distinguish FIR 0 from FIR 3, stratified in function of MIR grade, among which Matrix metallopeptidase 9 (MMP-9) was the top differentially expressed protein. Gene Ontology enrichment analysis of the core proteins showed significant changes in the biological pathways associated to inflammation and regulation of immune and infection response. Data suggest that the conditions determining PTB would be a transversal event, secondary to the maternal inflammatory response causing a breakdown in fetal-maternal tolerance, with fetal inflammation being severe than maternal one. We also highlight matrix metallopeptidase-9 as a potential amnion-associated predictive biomarker of PTB that can be assayed in the maternal serum, for future investigation.

2021-12-06 | PXD028343 | Pride

Paternal TCDD Exposure Alters the Placental Epigenome

Project description:Preterm birth (PTB), spontaneous parturition prior to 37 weeks gestation, is the leading cause of neonatal mortality. We previously demonstrated that developmental exposure of male mice (F1 animals) to the environmental endocrine disruptor 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) was associated with reduced sperm quantity/quality in adulthood and their control mating partners frequently delivered preterm. Reproductive defects persisted in the F2 and F3 descendants and mating partners also exhibited an enhanced risk of spontaneous PTB. Reproductive changes in the F3 males, the first generation without direct TCDD exposure, suggest epigenetic alterations occurred in the male germline. Importantly, the sperm epigenome impacts development of the placenta, a tissue which is known to influence the timing of parturition. Therefore, we conducted an epigenetic microarray analysis of control and F1 male derived placentae obtained on E18.5 of pregnancy.

2018-05-07 | GSE111948 | GEO

OmicsDI is part of the ELIXIR infrastructure

OmicsDI is an Elixir interoperability service. Learn more ›

Tweets

OmicsDI Databases

PRIDE
PeptideAtlas
MassIVE
JPOST Repository
Physiome Model Repository

EGA
EVA
ENA
LINCS
PAXDB
Cell Collective

MetaboLights
Metabolomics Workbench
MetabolomeExpress
GNPS
BioModels
FAIRDOMHub

ArrayExpress
dbGaP
ExpressionAtlas
GEO
NODE

Information

Databases
Help
API
Contact us
Code on GitHub
Terms of use
Submit Data