Mus musculus
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA90117 | ENA |
REPOSITORIES: ENA
Similar Datasets
Project description:We compared gene expression in T1alpha (-/-) lungs vs wild type at dpc 18.5 when the phenotype is moderate and at term when the phenotype is more severe. Lungs present narrow and irregular alveolar spaces, thicker mesenchyme, reduced number of attenuated type I cells, normal numbers of type II cells and secreted surfactant. At term, but not a dpc 18.5, there is increased proliferation of distal cells. We compared gene expression of T1alpha null mutant lungs to wild type lungs at dpc 18.5. The mutant phenotype at this developmental stage is moderate but the alveolar sacs are narrower than normal. Keywords: other
2004-09-15 | GSE1363 | GEO
Project description:We compared gene expression in T1alpha (-/-) lungs vs wild type at dpc 18.5 when the phenotype is moderate and at term when the phenotype is more severe. Lungs present narrow and irregular alveolar spaces, thicker mesenchyme, reduced number of attenuated type I cells, normal numbers of type II cells and secreted surfactant. At term, but not a dpc 18.5, there is increased proliferation of distal cells. We compared gene expression of T1alpha null mutant lungs to wild type lungs at dpc 18.5. The mutant phenotype at this developmental stage is moderate but the alveolar sacs are narrower than normal.
2007-11-22 | E-GEOD-1363 | biostudies-arrayexpress
Project description:Despite the fact that we are constantly exposed to various environmental compounds, very few studies explore the impact of combined exposure to physical and chemical pollutants on reproductive health. Until now, assessment of pollutants is mostly based on the evaluation of single pollutant or combination of chemicals with common features and modes of action. In this context, numerous studies have demonstrated that steroidogenesis and gametogenesis, the main testicular functions, are well-known to be sensitize by endocrine disruptors (as Bisphenol A) and DNA-damaging agents (as γ-rays) respectively. In this study, we aim to investigate short and long term testicular transcriptionnal alterations of combined fetal exposure to well-known environmental toxicants: γ-rays (RAD) and BPA. To discriminate specific signatures of BPA or RAD exposure after combined exposure and evidence the type of synergisms between this pollutants, we performed transcriptomic analyses on testis exposed to BPA or RAD alone and co-exposed with BPA and RAD and compared gene expression with control condition. For this, we exposed pregnant mice from 10.5 dpc to 18.5 dpc to 10µM of BPA (in drinking water) and/or we irradiated mice at 12.5 dpc to 0.2 Gy. We performed transcriptomic analyses on fetal testis (18.5 dpc) and adult testis (3 months) to evaluate short and long term cell response after in utero exposure.
2021-12-03 | E-MTAB-10982 | biostudies-arrayexpress
Project description:Insight into the role of Insulin-like Growth Factor (IGF) in development of lungs has come from the study of genetically modified mice. IGF1 is a key factor during lung development. IGF1 deficiency in the neonatal mouse causes respiratory failure collapsed alveoli and altered alveolar septa. To further characterize IGF1 function during lung development we analyzed Igf1-/- mouse prenatal lungs in a C57Bl/6 genetic background. Mutant lungs showed disproportional hypoplasia, disorganized extracellular matrix and dilated alveolar capillaries. IGF1 target genes during lung maturation were identified by analyzing RNA differential expression in Igf1-/- lungs using microarrays. Lungs from E18.5 were isolated from both Igf1+/+ wild type and Igf1-/- null mice and pooled to obtain RNA. Heterozygous male and female with a genetic background C57BL/6J were mated to obtain embryos at embrionic (E) stage 18.5 days post coitum (E18.5). 3 biological replicates per genotype.
2014-03-31 | E-GEOD-17157 | biostudies-arrayexpress
Project description:Delta-like 3 (Dll3) is a divergent ligand and modulator of the Notch signaling pathway only identified so far in mammals. Null mutations of Dll3 disrupt cycling expression of Notch targets Hes1, Hes5, and Lfng, but not of Hes7. Compared with Dll1 or Notch1, the effects of Dll3 mutations are less severe for gene expression in the presomitic mesoderm, yet severe segmentation phenotypes and vertebral defects result in both human and mouse. Reasoning that Dll3 specifically disrupts key regulators of somite cycling, we carried out functional analysis to identify targets accounting for the segmental phenotype. Using microdissected embryonic tissue from somitic and presomitic mesodermal tissue, we identified new genes enriched in these tissues, including Limch1, Rphn2, and A130022J15Rik. Surprisingly, we only identified a small number of genes disrupted by the Dll3 mutation. These include Uncx, a somite gene required for rib and vertebral patterning, and Nrarp, a regulator of Notch/Wnt signaling in zebrafish and a cycling gene in mouse. To determine the effects of Dll3 mutation on Nrarp, we characterized the cycling expression of this gene from early (8.5 dpc) to late (10.5 dpc) somitogenesis. Nrarp displays a distinct pattern of cycling phases when compared to Lfng and Axin2 (a Wnt pathway gene) at 9.5 dpc but appears to be in phase with Lfng by 10.5 dpc. Nrarp cycling appears to require Dll3 but not Lfng modulation. In Dll3 null embryos, Nrarp displayed static patterns. However, in Lfng null embryos, Nrarp appeared static at 8.5 dpc but resumed cycling expression by 9.5 and dynamic expression at 10.5 dpc stages. By contrast, in Wnt3a null embryos, Nrarp expression was completely absent in the presomitic mesoderm. Towards identifying the role of Dll3 in regulating somitogenesis, Nrarp emerges as a potentially important regulator that requires Dll3 but not Lfng for normal function. Experiment Overall Design: To enrich for genes in the presomitic mesoderm that are specifically disrupted by Dll3 mutation, we compared microdissected tissues from wild-type and Dll3 mutant embryos. We generated biological replicate pools from Dll3+/+ (wild-type) or Dll3neo/neo embryos for a total of six pools. Microarray analysis using Affymetrix MOE430A arrays was carried out on the biological pool triplicates for both wild-type and mutant genotypes.
2009-03-14 | E-GEOD-15152 | biostudies-arrayexpress
Project description:Delta-like 3 (Dll3) is a divergent ligand and modulator of the Notch signaling pathway only identified so far in mammals. Null mutations of Dll3 disrupt cycling expression of Notch targets Hes1, Hes5, and Lfng, but not of Hes7. Compared with Dll1 or Notch1, the effects of Dll3 mutations are less severe for gene expression in the presomitic mesoderm, yet severe segmentation phenotypes and vertebral defects result in both human and mouse. Reasoning that Dll3 specifically disrupts key regulators of somite cycling, we carried out functional analysis to identify targets accounting for the segmental phenotype. Using microdissected embryonic tissue from somitic and presomitic mesodermal tissue, we identified new genes enriched in these tissues, including Limch1, Rphn2, and A130022J15Rik. Surprisingly, we only identified a small number of genes disrupted by the Dll3 mutation. These include Uncx, a somite gene required for rib and vertebral patterning, and Nrarp, a; regulator of Notch/Wnt signaling in zebrafish and a cycling gene in mouse. To determine the effects of Dll3 mutation on Nrarp, we characterized the cycling expression of this gene from early (8.5 dpc) to late (10.5 dpc) somitogenesis. Nrarp displays a distinct pattern of cycling phases when compared to Lfng and Axin2 (a Wnt pathway gene) at 9.5 dpc but appears to be in phase with Lfng by 10.5 dpc. Nrarp cycling appears to require Dll3 but not Lfng modulation. In Dll3 null embryos, Nrarp displayed static patterns. However, in Lfng null embryos, Nrarp appeared static at 8.5 dpc but resumed cycling expression by 9.5 and dynamic expression at 10.5 dpc stages. By contrast, in Wnt3a null embryos, Nrarp expression was completely absent in the presomitic mesoderm. Towards identifying the role of Dll3 in regulating somitogenesis, Nrarp emerges as a potentially important regulator that requires Dll3 but not Lfng for normal function. Experiment Overall Design: To enrich for genes in the somite level tissues that are specifically disrupted by Dll3 mutation, we compared microdissected tissues from wild-type and Dll3 mutant embryos. We generated biological replicate pools from Dll3+/+ (wild-type) or Dll3neo/neo embryos for a total of six pools. Microarray analysis using Affymetrix MOE430A arrays was carried out on the biological pool triplicates for both wild-type and mutant genotypes.
2009-03-14 | E-GEOD-15153 | biostudies-arrayexpress
Project description:Deletion of Snx5 leads to respiratory failure in neonatal mice. Here we analyzed the effect of depleted SNX5 in a lung. We used expression microarray to compare between wild lungs and mutant lungs at E18.5 and E18.5 after air-breathing test. Total RNA were extracted from embryonic 18.5 day (E18.5) wild and mutant mice lung. Also other total RNA samples were extracted after air-breathing test at E18.5.
2012-12-31 | E-GEOD-37080 | biostudies-arrayexpress
Project description:The function of Dnmt3b, of which deregulated activity is linked to several human pathologies, was studied using Dnmt3b hypomorphic mutant mice with reduced catalytic activity. Microarray analysis of deregulated expression programs in the hypomorphic Dnmt3b mutant mice (m3/m24) was combined to an analysis of the molecular mechanisms involved in the illegitimate activation of a specific set of genes. Mouse embryonic fibroblasts and thymus tissues isolated from 12.5 dpc and 18.5 dpc, respectively, wild-type and hypomorphic embryos (129SvJae x C57BL/6 hybrid genetic background). Total RNA was isolated using RNeasy Mini kit (QIAGEN), amplified, labeled, and hybridized following a previously described protocol (Le Brigand et al., Nuc Acid Res, 2006). Total RNA was coupled with Cyanine 3 or 5 and then hybridized in competition with reference RNA composed of a pool of total RNA isolated from wild-type thymus or MEF cells (thymus, n=5; MEF, n=5); two dye-swap were realized leading to the analysis of 18 microarrays for thymus (2 microarrays were excluded for unsufficient quality) and 20 for MEF cells. Arrays were then scanned with Agilent G2565AA Microarray Scanner (Agilent Technologies).
2010-04-21 | E-GEOD-19597 | biostudies-arrayexpress
Project description:Transcriptional profiling of ssa_1972-null mutant of Streptococcus sanguinis compared with wild type. The ssa_1972 gene was inactivated in Streptococcus sanguinis SK36 and transcriptional profile was compared with wild type SK36. More information can be found at http://www.people.vcu.edu/~pingxu
2013-07-17 | GSE48940 | GEO
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.
2015-12-31 | E-GEOD-69204 | biostudies-arrayexpress