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Regulatory T Cells Play a Central Role in a Subset of Idiopathic Preterm Birth and Adverse Neonatal Outcomes

ABSTRACT: Regulatory T Cells Play a Central Role in a Subset of Idiopathic Preterm Birth and Adverse Neonatal Outcomes

PROVIDER: PRJNA606812 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR11091570.fastq.gz	Fastqsanger.gz
	SRR11091571.fastq.gz	Fastqsanger.gz
	SRR11091572.fastq.gz	Fastqsanger.gz
	SRR11091573.fastq.gz	Fastqsanger.gz
	SRR11091574.fastq.gz	Fastqsanger.gz

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Regulatory T Cells Play a Central Role in a Subset of Idiopathic Preterm Birth and Adverse Neonatal Outcomes

Project description:Regulatory T cells (Tregs) have been exhaustively investigated during early pregnancy; however, their role later in gestation is poorly understood. Herein, we report that functional Tregs are reduced at the maternal-fetal interface in a subset of women with idiopathic preterm labor/birth (PTB), which is accompanied by a concomitant increase in Tc17 cells. In mice, depletion of functional Tregs during late gestation induced PTB and adverse neonatal outcomes, which were rescued by the adoptive transfer of such cells. Treg depletion did not alter obstetrical parameters in the mother; yet, it increased susceptibility to endotoxin-induced PTB. The mechanisms whereby the loss of Tregs induces adverse perinatal outcomes involved tissue-specific immune responses and mild systemic maternal inflammation together with dysregulation of developmental and cellular processes in the placenta, in the absence of intra-amniotic inflammation. These findings provide mechanistic evidence supporting a central role for Tregs in the pathophysiology of idiopathic PTB and adverse neonatal outcomes.

2020-06-04 | GSE145357 | GEO

Assessing placental maturity through histological and transcriptomic analyses in idiopathic spontaneous preterm birth

Project description:Assessing placental maturity through histological and transcriptomic analyses in idiopathic spontaneous preterm birth

2019-12-25 | GSE118442 | GEO

Preterm birth CVF proteomics discovery

Project description:Preterm birth, defined as birth <37 weeks of gestation, is a leading cause of infant morbidity and mortality. In the United States, approximately 12% of all births are preterm.1 Despite decades of research, there has been little progress in developing effective interventions to prevent preterm birth. In fact, the rate of preterm birth has increased slightly over the last several decades.2 The ultimate goal of the Genomic and Proteomic Network for Preterm Birth Research (GPN-PBR) is to identify possible biomarkers that could predict the susceptibility to spontaneous preterm birth (SPTB) as well as to shed light on the molecular mechanisms involved in its etiologies. Understanding those mechanisms will help us predict SPTB and may facilitate the introduction of more effective prevention and treatment strategies.

2014-08-28 | PXD001268 | Pride

Functional proteome analysis of placenta membrane associated with preterm birth

Project description:In this study, the molecular signature of placenta membrane from preterm birth placenta was assessed and compared to full-term placenta by proteomic profiling with the aim to identify molecules relevant to preterm birth.

2020-04-17 | MSV000085301 | MassIVE

MeDIP assay using human myometrium of women with preterm labor of different phenotypes vs. normal term labor

Project description:Preterm birth is multifactorial in origin with several distinct clinical phenotypes of differing etiologies, including idiopathic preterm birth. Preterm birth involves the interaction of genetic, societal and environmental factors such as nutrition, lifestyle and stress that may modulate the length of gestation via the epigenome. DNA methylation is a well-studied epigenetic modification whereby promoter methylation commonly represses gene expression and vice versa. Myometrial tissue was obtained at cesarean section at term with or without labor, preterm without labor, idiopathic preterm labor, and twin gestations with labor. Differences in the myometrial epigenomes were identified at gene promoters, CpG islands, CpG island shores and shelves, gene bodies across the genome between the groups of women with preterm labor of different phenotypes vs. normal term labor. Functional clustering analysis indicated the significantly enriched pathways of hypomethylated genes (permissive) were related to acute inflammatory and acute-phase responses. By contrast, genes that are hypermethylated (repressive) revealed enrichment for contractile fibers and cell. This study provides the first high-resolution DNA methylome of human myometrium with evidence for differences in the methylome that may relate to idiopathic preterm birth via regulation of gene expression. The findings extend previous observations that idiopathic preterm labor is associated with subclinical intrauterine infection and inflammatory pathways and point to targets for further molecular characterization of preterm delivery. Comparison of the human myometrial epigenomes in pregnancies with preterm labor of different phenotypes vs. normal term labor

2017-05-04 | E-GEOD-71123 | biostudies-arrayexpress

Distinct maternofetal immune signatures delineate preterm birth onset following urinary tract infection

Project description:Preterm birth is the leading cause of infant mortality resulting in over one million neonatal deaths annually. Maternal urinary tract infection (UTI) during pregnancy increases risk for preterm birth; however, biological processes mediating UTI-associated preterm birth are not well-described. We established a murine maternal UTI model in which challenge with uropathogenic E. coli resulted in preterm birth in about half of dams. Dams experiencing preterm birth displayed excessive bladder inflammation and altered uteroplacental T cell polarization compared to non-laboring infected dams, with no differences in bacterial burdens. Additional factors associated with preterm birth included higher proportions of male fetuses and lower maternal serum IL-10. Furthermore, exogenous maternal IL-10 treatment absolved UTI-associated preterm birth but contributed to fetal growth restriction in this model.

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Preterm Birth Buccal Cell Epigenetic Biomarkers to Facilitate Preventative Medicine

Project description:Preterm birth is the major cause of newborn and infant mortality affecting nearly one in every ten live births. This study was designed to develop an epigenetic biomarker for susceptibility of preterm birth using buccal cells from the mother, father, and child (triads). MeDIP-seq was used to identify differential DNA methylation regions (DMRs) using a comparison of control term birth versus preterm birth triads. Epigenetic DMR associations with preterm birth were identified for both the mother and father that were distinct and suggest potential epigenetic contributions from both parents. The mother (165 DMRs) and female child (136 DMRs) at p<1e-04 had the highest number of DMRs and were highly similar suggesting potential epigenetic inheritance of the epimutations. The male child had negligible DMR associations. The DMR associated genes for each group involve previously identified preterm birth associated genes.

2022-03-09 | GSE194227 | GEO

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).

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

Assessing placental maturity through histological and transcriptomic analyses in idiopathic spontaneous preterm birth

Project description:Assessing placental maturity through histological and transcriptomic analyses in idiopathic spontaneous preterm birth

| PRJNA485683 | ENA