Project description:To characterise the transcriptome of mouse placental junctional zone cells in Control litters (deletion of the maternally-inherited and silent Igf2 allele, with normal Igf2 levels in whole litters) in UE litters (dams carried offspring with a deletion of the paternally-inherited Igf2 allele in the placental endocrine cells with diminished Igf2 production from the endocrine cells in whole litters), we performed single nucleus RNA sequencing on the placenta Junctional zone 8 Control placentas (offspring sex: 4M:4F) and 8 UE placentas (offspring sex: 4M:4F) in 2 batches each.
Project description:Tfap2c is deleted in Tpbpa positive precursor cells forming the junctional zone of murine placenta. Deregulation in gene expression is analysed compared to the junctional zone in control placenta.
Project description:Placentation differs in the BN rat strain when compared to HSD and DSS rat strains. Intrauterine trophoblast invasion is shallow and the junctional zone is underdeveloped in the BN rat. These structural differences are striking but their quantification is not conducive to high throughput analyses. In the rat, the junctional zone can be readily dissected and is more homogenous than other components of the placentation site. HSD and BN rat gestation day 18.5 junctional zone gene expression profiles were determined using DNA microarray analysis to identity placenta-associate quantitate traits. Total RNAs from Junctional zone tissues of gestation day18.5 HSD and BN rat strains were subjected to microarray analyses. Three biological replicates of each strains were analyzed.
Project description:Placenta junctional zone and brains dissected, kept in -80ºC, RNA extracted with RNAesasy kit kiagen, cDNA performed with normalized RNA levels. qPCR gene expression profiling
Project description:Placentation differs in the BN rat strain when compared to HSD and DSS rat strains. Intrauterine trophoblast invasion is shallow and the junctional zone is underdeveloped in the BN rat. These structural differences are striking but their quantification is not conducive to high throughput analyses. In the rat, the junctional zone can be readily dissected and is more homogenous than other components of the placentation site. HSD and BN rat gestation day 18.5 junctional zone gene expression profiles were determined using DNA microarray analysis to identity placenta-associate quantitate traits.
Project description:In a previous study, 50% calorie restriction in mice from days 1.5-11.5 of pregnancy resulted in reduced placental weights and areas, relatively sparing of labyrinth zone area compared to junctional zone area, and dramatic changes in global gene expression profiles. Here we examined placental gene expression at day 18.5, after the return to normal feeding to see whether differences were reversible
Project description:In a previous study, 50% calorie restriction in mice from days 1.5-11.5 of pregnancy resulted in reduced placental weights and areas, relatively sparing of labyrinth zone area compared to junctional zone area, and dramatic changes in global gene expression profiles. Here we examined placental gene expression at day 18.5, after the return to normal feeding to see whether differences were reversible Mice were randomized to 2 treatment groups on day 1.5 of pregnancy: (1) ad libitum fed (control) (2) 50% food restriction (restricted). Mice were returned to ad libitum feed on d11.5, sacrificed on d18.5 and placentas were collected.
Project description:Placental trophoblast cells are potentially at risk from circulating endocrine-disrupting chemicals, such as bisphenol A (BPA). To understand how BPA and the reputedly more inert bisphenol S (BPS) affect the placenta, C57BL6J mouse dams were fed 200 μg/kg body weight BPA or BPS daily for 2 wk and then bred. They continued to receive these chemicals until embryonic day 12.5, whereupon placental samples were collected and compared with unexposed controls. BPA and BPS altered the expression of an identical set of 13 genes. Both exposures led to a decrease in the area occupied by spongiotrophoblast relative to multinucleated giant cells (GCs) within the junctional zone, markedly reduced placental serotonin (5-HT) concentrations, and lowered 5-HT GC immunoreactivity. Concentrations of dopamine and 5-hydroxyindoleacetic acid, the main metabolite of serotonin, were increased. GC dopamine immunoreactivity was increased in BPA- and BPS-exposed placentas. A strong positive correlation between 5-HT+ GCs and reductions in spongiotrophoblast to GC area suggests that this neurotransmitter is essential for maintaining cells within the junctional zone. In contrast, an inverse correlation existed between dopamine+ GCs and reductions spongiotrophoblast to GC area. These outcomes lead to the following conclusions. First, BPS exposure causes almost identical placental effects as BPA. Second, a major target of BPA/BPS is either spongiotrophoblast or GC within the junctional zone. Third, imbalances in neurotransmitter-positive GC and an observed decrease in docosahexaenoic acid and estradiol, also occurring in response to BPA/BPS exposure, likely affect the placental–brain axis of the developing mouse fetus.
Project description:The subependymal zone (SEZ), also known as the subventricular zone (SVZ), constitutes a neurogenic niche that persists during post-natal life. To investigate the cellular diversity of this brain region during human adulthood, we characterized the complete cellular niche of the adult human SEZ by single-nucleus RNA sequencing (snRNAseq), in youth and middle-aged adults.