Transcriptional profiles of yolk sac upon HNF4A loss in mice by RNA-seq
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ABSTRACT:
PROVIDER: PRJNA699306 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR13622132.fastq.gz | Fastqsanger.gz | |||
| SRR13622133.fastq.gz | Fastqsanger.gz | |||
| SRR13622134.fastq.gz | Fastqsanger.gz | |||
| SRR13622135.fastq.gz | Fastqsanger.gz | |||
| SRR13622136.fastq.gz | Fastqsanger.gz |
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Project description:Knockout of HNF4A in yolk sac resulted in decreased expression levels of brush border genes and increased expression levels of stress fiber genes.
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Project description:GW182 (Tnrc6a) is a key component of RISC (miRNA-Induced Silencing Complex) that plays a critical role in miRNA-mediated gene silencing. Here, we show that GW182 is expressed in the yolk sac endoderm, and that gene-trap disruption of GW182 leads to growth arrest of yolk sac endoderm, impaired hematopoiesis and embryonic lethality. To investigate roles of GW182 in the yolk sac endoderm, we assessed changes in mRNA expression in the yolk sac of E9.5 GW182gt/gt embryos using microarrays (Affymetrix). Yolk sac of wild type littermates and GW182gt/gt embryos at E9.5 was collected for total RNA isolation using Trizol (Invitrogen). RNAs were purified according to the manufacturer’s protocol before subjected to Mouse Gene 1.0 ST Whole Genome Array (Affymetrix) for mRNA expression profiling. Experiments were performed in triplicate. Differentially expressed mRNAs were identified using a two-sample t-test (P<0.05 considered significant).
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Project description:The human yolk sac (YS) is an extra-embryonic tissue critical for early prenatal life development. It is the first site of haematopoiesis where progenitors differentiate from endoderm within blood islands of the yolk sac contributing initially to primitive erythropoiesis and in subsequent waves to erythro-myeloid and lymphoid differentiation.
2023-03-01 | E-MTAB-10552 | biostudies-arrayexpress
Project description:The human yolk sac (YS) is an extra-embryonic tissue critical for early prenatal life development. It is the first site of haematopoiesis where progenitors differentiate from endoderm within blood islands of the yolk sac contributing initially to primitive erythropoiesis and in subsequent waves to erythro-myeloid and lymphoid differentiation.
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Project description:The signaling cascades that direct the morphological differentiation of the vascular system during early embryogenesis are not well defined. To further understand the role of Notch signaling during endothelial differentiation, this study uses both an in vivo gain-of-function and in vivo loss-of-function approach. At embryonic day 9.5, embryos with activated Notch1 signaling in the endothelia display a variety of growth and cardiovascular defects, and die soon after E10.5. Most notably, the extra-embryonic vasculature of the yolk sac displays remodeling differentiation defects. In the wild-type yolk sac, the primary vascular network has begun to reorganize, forming the large primary vessels and the smaller capillaries. In the activated Notch1 embryos remodeling is defective; the vasculature have an enlarged surface with decreased inter-vessel space. Embryos with ablated Notch signaling also display growth and vascular defects at E9.5 similar to the activated Notch1 embryos, however they exhibit a lack of vascular remodeling in the yolk sac, retaining the simple vascular plexus seen at E8.5. These results indicate that Notch signaling plays a critical role in the remodeling of the vasculature in the early embryo, particularly in the extra embryonic region. A conditional transgenic system was used in this study to activate Notch signaling. The ubiquitous ROSA26Notch transgene with a Neo/stop cassette flanked by loxP sites, followed by the N1-ICD cDNA, was recombined with a Tie2-CRE mouse, resulting in the removal of the STOP cassette and the subsequent activation of the Notch1-intracellular domain. This allowed for the overexpression and expansion of Notch signaling in all endothelial cells. Male Tie2-Cre mice were mated with female ROSA26Notch mice and resulting embryos were dissected at embryonic day 9.5. To ablate Notch signaling, Tie2-Cre mice were used in a two generation cross to obtain Tie2-Cre; Rbpj flox/flox embryos. These embryos lack RBPJ binding activity in the endothelia. In both instances embryos were used for genotyping and the yolk sac were separated and used to isolate total RNA with an RNeasy mini kit. The RNA was analyzed with the Mouse Genome 430A Array from Affymetrix. Samples were performed in duplicate, and RNA from wild type yolk sac tissues was compared to activated Notch and RBPJ loss-of-function yolk sac tissues.
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Project description:Investigating the blood, immune and stromal cells present in a human fetal embryo in a world first single cell transcriptomic atlas. The embryo was dissected into 12 coronal sections, yolk sac, and yolk sac stalk. Live single cells sorted, with cell suspension then undergoing 10x chromium 5 prime scRNA-seq. This accession contains the yolk sac and yolk sac stalk data from this embryo. A matched accession contains the coronal section data. Lane "WS_wEMB12142156" (from yolk sac) was excluded from downstream analysis due to low fraction reads in cells post-CellRanger QC. Termination procedure for this embryo was medical. The F158_[features...barcodes...matrix].[tsv...mtx].gz files attached to this accession represent raw count data from all the 10x lanes in this accession combined, and as output from CellRanger filtered matrices (CellRanger version 6.0.1 using human reference genome GRCh38-2020-A). One set of count matrices relates to the yolk sac data, and one set of count matrices relates to the yolk sac stalk data.
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Project description:Rudhira is essential for mouse developmental angiogenesis and tissue morphogenesis. Embryos lacking endothelial rudhira die at mid-gestation with vascular patterning defects. Rudhira mutant yolk sac endothelial cells show slow and random migration. So to identify key signaling pathways perturbed in the absence of rudhira, we undertook whole transcriptome based analysis of gene expression in rudhira null yolk sac and embryo. Transcriptome analysis shows that key mediators of angiogenesis, cell adhesion, migration and extracellular matrix degradation as well as several components of the TGFβ pathway are perturbed in rudhira null mutant yolk sacs at 9.5 dpc. We used two embryo samples ( 2E- wild type; 5E- rudhira mutant). Repetition was done on each sample. We used 4 yolk sac samples (3Y,4Y- wild type; 7Y,8Y-rudhira mutant) for the analysis. Repetition was done on each sample.
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Project description:The signaling cascades that direct the morphological differentiation of the vascular system during early embryogenesis are not well defined. To further understand the role of Notch signaling during endothelial differentiation, this study uses both an in vivo gain-of-function and an in vivo loss-of-function approach. At embryonic day 9.5, embryos with activated Notch1 signaling in the endothelia display a variety of growth and cardiovascular defects, and die soon after E10.5. Most notably, the extra-embryonic vasculature of the yolk sac displays remodeling differentiation defects. In the wild-type yolk sac, the primary vascular network has begun to reorganize, forming the large primary vessels and the smaller capillaries. In the activated Notch1 embryos, remodeling is defective; the vasculature have an enlarged surface with decreased inter-vessel space. Embryos with ablated Notch signaling also display growth and vascular defects at E9.5 similar to the activated Notch1 embryos, however they exhibit a lack of vascular remodeling in the yolk sac, retaining the simple vascular plexus seen at E8.5. These results indicate that Notch signaling plays a critical role in the remodeling of the vasculature in the early embryo, particularly in the extra-embryonic region.
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