RNA-seq expression profiling of Grhl2-deficient and control murine lung epithelium at embryonic day E16.5
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA415389 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR6202830_1.fastq.gz | Fastqsanger.gz | |||
| SRR6202830_2.fastq.gz | Fastqsanger.gz | |||
| SRR6202825_1.fastq.gz | Fastqsanger.gz | |||
| SRR6202825_2.fastq.gz | Fastqsanger.gz | |||
| SRR6202826_1.fastq.gz | Fastqsanger.gz |
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Project description:Epithelial (CD31-CD45-EpCAM+) cells were isolated by FACS from Grhl2-deficient (Shh-Cre;Grhl2f/-) and control (Shh-Cre;Grhl2f/+) embryonic lungs at day E16.5 (3 biological replicates/genotype). Total RNA extracted from the samples was subjected to next-generation sequencing (NGS) library preparation using standard Illumina protocols. Completed libraries from individual samples were sequenced on a HiSeq2500 at the Australian Genome Research Facility.
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Project description:Epithelial (CD31-CD45-EpCAM+) lung cells were derived by FACS from ShhCre;Ezh2fl/fl and control ShhCre;Ezh2fl/+ mouse embryos at day E16.5 (2 biological replicates per genotype). Chromatin from each of the replicates was immunoprecipitated with H3K27me3 antibody (Millipore #07-449) and subjected to NGS library preparation using TruSeq Nano DNA Sample Preparation Kit (Illumina). Completed libraries from different samples were sequenced on HiSeq 2500 TruSeq with SBS Kit v3 - HS reagents (Illumina) as 100 bp single end reads at the Australian Genome Research Facility.
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Project description:Epithelial (CD31-CD45-EpCAM+) and stromal (CD31-CD45-EpCAM-) lung cells were derived by FACS from ShhCre;Ezh2fl/fl and control ShhCre;Ezh2fl/+ mouse embryos at day E16.5 (3 biological replicates per genotype-tissue combination). Total RNA extracted from the samples was subjected to NGS library preparation using TruSeq Stranded Total RNA with Ribo-Zero (Illumina). Completed libraries from different samples were sequenced on HiSeq 2000 TruSeq with SBS Kit v3 - HS reagents (Illumina) as 100 bp single end reads at the Australian Genome Research Facility. RNA-seq gene expression profiles from Ezh2 deficient and control lung epithelial and stromal cell populations at day E16.5 (3 replicates per genotype-tissue combination).
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Project description:The Grainyhead family of transcription factors controls morphogenesis and differentiation of epithelial cell layers in multicellular organisms by regulating cell junction- and proliferation-related genes. Grainyhead-like 2 (Grhl2) is expressed in developing mouse lung epithelium and is required for normal lung organogenesis. The specific epithelial cells expressing Grhl2 and the genes regulated by Grhl2 in normal lungs are mostly unknown. In these studies, we identified the NK2 homeobox 1 transcription factor (Nkx2-1) as a direct transcriptional target of Grhl2. By binding and transcriptional assays, and by confocal microscopy we showed that these two transcription factors form a positive feed-back loop in vivo and in cell lines, and are co-expressed in lung bronchiolar and alveolar type II cells. The morphological changes observed in flattening lung alveolar type II cells in culture are associated with down-regulation of Grhl2 and Nkx2-1. Reduction of Grhl2 in lung epithelial cell lines results in lower expression levels of Nkx2-1 and of known Grhl2 target genes. By microarray analysis we identified that in addition to Cadherin1 and Claudin4, Grhl2 regulates other cell interaction genes such as semaphorins and their receptors, which also play a functional role in developing lung epithelium. Impaired collective cell migration observed in Grhl2 knockdown cell monolayers is associated with reduced expression of these genes and may contribute to the altered epithelial phenotype reported in Grhl2 mutant mice. Thus, Grhl2 functions at the nexus of a novel regulatory network, connecting lung epithelial cell identity, migration and cell-cell interactions. To identify genes regulated by GRHL2 in lung epithelial cells, we performed cDNA microarray analyses in MLE15 cells transduced with Grhl2-shRNA and compared to a non-silencing control. Independent transductions of MLE15 cells using Grhl2-shRNA (n=3) and a non-silencing control (n=2) were analyzed.
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Project description:Healthy placental development is essential for reproductive success; failure of the feto-maternal interface results in preeclampsia and intrauterine growth retardation. We found that grainyhead-like 2 (GRHL2), a CP2-type transcription factor, is highly expressed in chorionic trophoblast cells, including basal chorionic trophoblast (BCT) cells located at the chorioallantoic interface in murine placentas. Placentas from Grhl2-deficient mouse embryos displayed defects in BCT cell polarity and basement membrane integrity at the chorioallantoic interface, as well as a severe disruption of labyrinth branchingmorphogenesis.Selective Grhl2 inactivation only in epiblastderived cells rescued all placental defects but phenocopied intraembryonic defects observed in global Grhl2 deficiency, implying the importance of Grhl2 activity in trophectoderm-derived cells. ChIPseq identified 5282 GRHL2 binding sites in placental tissue. By integrating these data with placental gene expression profiles, we identified direct and indirect Grhl2 targets and found a marked enrichment of GRHL2 binding adjacent to genes downregulated in Grhl2−/− placentas, which encoded known regulators of placental development and epithelial morphogenesis. These genes included that encoding the serine protease inhibitor Kunitz type 1 (Spint1), which regulates BCT cell integrity and labyrinth formation. In human placenta, we found that human orthologs of murine GRHL2 and its targets displayed co-regulation and were expressed in trophoblast cells in a similar domain as in mouse placenta. Our data indicate that a conserved Grhl2-coordinated gene network controls trophoblast branching morphogenesis, thereby facilitating development of the site of feto-maternal exchange. This might have implications for syndromes related to placental dysfunction. In vivo genome-wide examination of binding sites of the transcription factor GRHL2 by ChIP-seq using wild-type murine E17.5 placenta tissue. Two samples in total: one GRHL2 ChIP sample and one IgG ChIP sample using wild-type placentas tissue as antibody control.
2015-03-10 | E-GEOD-65962 | biostudies-arrayexpress
Project description:The Grainyhead family of transcription factors controls morphogenesis and differentiation of epithelial cell layers in multicellular organisms by regulating cell junction- and proliferation-related genes. Grainyhead-like 2 (Grhl2) is expressed in developing mouse lung epithelium and is required for normal lung organogenesis. The specific epithelial cells expressing Grhl2 and the genes regulated by Grhl2 in normal lungs are mostly unknown. In these studies, we identified the NK2 homeobox 1 transcription factor (Nkx2-1) as a direct transcriptional target of Grhl2. By binding and transcriptional assays, and by confocal microscopy we showed that these two transcription factors form a positive feed-back loop in vivo and in cell lines, and are co-expressed in lung bronchiolar and alveolar type II cells. The morphological changes observed in flattening lung alveolar type II cells in culture are associated with down-regulation of Grhl2 and Nkx2-1. Reduction of Grhl2 in lung epithelial cell lines results in lower expression levels of Nkx2-1 and of known Grhl2 target genes. By microarray analysis we identified that in addition to Cadherin1 and Claudin4, Grhl2 regulates other cell interaction genes such as semaphorins and their receptors, which also play a functional role in developing lung epithelium. Impaired collective cell migration observed in Grhl2 knockdown cell monolayers is associated with reduced expression of these genes and may contribute to the altered epithelial phenotype reported in Grhl2 mutant mice. Thus, Grhl2 functions at the nexus of a novel regulatory network, connecting lung epithelial cell identity, migration and cell-cell interactions.
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