GEO DataSets

(Submitter supplied) Physiological oxygen tension rises dramatically in the placenta between 8 and 14 weeks of gestation. Abnormalities in this period can lead to gestational diseases, whose underlying mechanisms remain unclear. We explored the changes at mRNA level by comparing the transcriptomes of human placentas at 8-10 gestational weeks and 12-14 gestational weeks. A total of 20 samples were collected and divided equally into four groups based on sex and age. more...

Organism:

Homo sapiens

Type:

Expression profiling by high throughput sequencing

Platform:

GPL18573

20 Samples

Download data: CSV

(Submitter supplied) The maternal signs of preeclampsia, principally the new onset of high blood pressure, are thought to occur secondary to faulty placentation. Previous studies profiled the gene expression patterns of chorionic villi, the maternal-fetal interface or isolated cytotrophoblasts in this pregnancy complication. We theorized that transcriptomic analyses of trophoblast subpopulations in situ would give us new insights into the role of these cells in preeclampsia pathogenesis.

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL16686

23 Samples

Download data: CEL, TXT

(Submitter supplied) This study is the first characterization of the first trimester placenta transcriptome, highlighting similarities and differences among the sexes in ongoing human pregnancies resulting in live births. Sexual dimorphism may contribute to pregnancy outcomes, including fetal growth and birth weight, which was seen in our cohort, with males significantly heavier than females at birth. This transcriptome provides a basis for development of early diagnostic tests of placental function that can indicate overall pregnancy heath, fetal-maternal health, and long term adult health.

Organism:

Homo sapiens

Type:

Expression profiling by high throughput sequencing

Platform:

GPL18573

39 Samples

Download data: TXT

(Submitter supplied) The goal of this study was to identify the gene expression signatures of two closely related types of trophoblast in human placentas: villous cytotrophoblasts (vCTB) and proximal column extravillous trophoblasts (pcEVT). The two populations were isolated from first trimester placentas and identified using the specific surface markers, EGFR (vCTB) and HLA-G (pcEVT).

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL10558

11 Samples

Download data: TXT

(Submitter supplied) We showed that hypoxia directs first trimester primary villous cytotrophoblast (vCTB) differentiation preferentially towards HLAG+ extravillous trophoblast (EVT). Infection of primary vCTB with ARNT-specific shRNA attenuates this effect, suggesting a role of the intact HIF-complex in hypoxia-directed CTB differentiation into EVT.

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL10558

24 Samples

Download data: TXT

(Submitter supplied) Human placenta bulk mRNA-sequencing from n=124 first trimester (59 female, 65 male) and n=43 third trimester (18 female, 25 male) tissue samples. A subset of 23 pregnancies has matched placenta tissue collected at both first and third trimester. Tissue was collected at Cedars-Sinai Medical Center in Los Angeles, California, USA. First trimester placenta was collected at gestational ages of 70-100 days from leftover tissue from chorionic villus sampling for prenatal genetic diagnosis, after cleaning to remove maternal decidua. more...

Organism:

Homo sapiens

Type:

Expression profiling by high throughput sequencing

Platform:

GPL24676

167 Samples

Download data: CSV

(Submitter supplied) We used microarrays to detail the global gene expression in human placental tissues in first trimester from patients subject to in vitro fertilization and embryo transfer and normal pregnancy

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL570

8 Samples

Download data: CEL

(Submitter supplied) Using the Illumina HumanMethylation450 BeadChip platform, we profiled the genome-wide DNA methylation of villous cytotrophoblasts samples isolated ex vivo from placental chorionic villi before they first come into contact with maternal blood (8-10 weeks of gestation, n = 9) and after (12-14 weeks of gestation, n = 10).

Organism:

Homo sapiens

Type:

Methylation profiling by array

Platform:

GPL13534

19 Samples

Download data: IDAT, TXT

(Submitter supplied) In this study, we isolated human villous stromal cells (STRs), CTBs, the STB, and EVTs at the first and second trimester of pregnancy and monitored the transcriptome dynamics of 1567 cells at single-cell resolution. We identified 14 subtypes of placental cells and characterized their functions, especially the unexpected secretion of 102 polypeptide hormone using bioinformatics analyses and immnunostaining verifications. more...

Organism:

Homo sapiens

Type:

Expression profiling by high throughput sequencing

Platform:

GPL20301

764 Samples

Download data: TXT

(Submitter supplied) The placental renin-angiotensin system (RAS) is important for placentation. RAS expression is greatest in early gestation. This may be due (in part) to suppression of miRNAs that target the placental RAS, but this has never been explored. In this study, human placental miRNAs were measured at 10–11 (early), 14–18 (mid), and 38–40 (term) weeks gestation, as well as in placentae from women with early- or late-onset preeclampsia (n=4/group), using an Agilent miRNA microarray (V19). more...

Organism:

Homo sapiens

Type:

Non-coding RNA profiling by array

Platform:

GPL18402

24 Samples

Download data: TXT

(Submitter supplied) Analysis of genome-wide gene expression during the differentiation of villous trophoblasts isolated from healthy term placentas.

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL10558

24 Samples

Download data: TXT

(Submitter supplied) During early human placental development, extravillous cytotrophoblasts (EVT) invade the uterine vasculature to sequester a maternal blood supply. The impact of this on placental gene expression has not been established for normal pregnancy. Using RNA sequencing, we profiled placental chorionic villous tissues from 96 pregnancies at 6-23 weeks of gestation. We identified 1,048 genes that were differentially expressed between 6-10 weeks’ and 11-23 weeks’ of gestation. more...

Organism:

Homo sapiens

Type:

Expression profiling by high throughput sequencing

Platform:

GPL16791

125 Samples

Download data: XLSX