Ontology highlight
ABSTRACT:
PROVIDER: PRJNA1271117 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR33795050_1.fastq.gz | Fastqsanger.gz | |||
| SRR33795050_2.fastq.gz | Fastqsanger.gz | |||
| SRR33871101_1.fastq.gz | Fastqsanger.gz | |||
| SRR33871101_2.fastq.gz | Fastqsanger.gz | |||
| SRR33871098_1.fastq.gz | Fastqsanger.gz |
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Project description:Suitable animal models are essential for translational research, especially in the case of complex, multifactorial conditions, such as obesity. The non-inbred mouse (Mus musculus) line Titan, also known as DU6, is one of the world’s longest selection experiments for high body mass and was previously described as a model for metabolic healthy (benign) obesity. The present study further characterizes the geno- and phenotypes of this non-inbred mouse line and testes its suitability as an interventional obesity model. In contrast to previous findings, our data suggest that Titan mice are metabolically unhealthy obese and short-lived. Line-specific patterns of genetic invariability are in accordance with observed phenotypic traits. Titan mice also show modifications in the liver transcriptome, proteome, and epigenome linked to metabolic (dys)regulations. Importantly, dietary intervention partially reversed the metabolic phenotype in Titan mice and significantly extended their life expectancy. Therefore, the Titan mouse line is a valuable resource for translational and interventional obesity research.
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Project description:In the present study we investigate the effect of maternal pulmonary exposure to titanium dioxide (UV-Titan designed for use in the paint and lacquer industry) on prenatally exposed offspring. Time-mated mice (C57BL/6BomTac) were exposed by inhalation for 1 h/day to 42 mg UV-titan/m3 aerosolized powder or filtered air during gestation days (GD) 8-18. We evaluated levels of DNA strand breaks using the comet assay in bronchioalveolar lavage (BAL) cells and liver cells of the time-mated mice, and in liver cells of the offspring. In parallel, we analyzed changes in gene expression in the liver tissue of offspring using DNA microarrays. We demonstrate that UV-Titan did not induce DNA strand breaks in the time-mated mice or their offspring. Transcriptional profiling of newborn liver tissue revealed changes in the expression of genes related to the retinoic acid (RA) signalling pathway in the females, while gene expression in male offspring was relatively unaffected by exposure.
2012-03-19 | GSE29067 | GEO
Project description:In the present study we investigate the effect of maternal pulmonary exposure to titanium dioxide (UV-Titan designed for use in the paint and lacquer industry) on prenatally exposed offspring. Time-mated mice (C57BL/6BomTac) were exposed by inhalation for 1 h/day to 42 mg UV-titan/m3 aerosolized powder or filtered air during gestation days (GD) 8-18. We evaluated levels of DNA strand breaks using the comet assay in bronchioalveolar lavage (BAL) cells and liver cells of the time-mated mice, and in liver cells of the offspring. In parallel, we analyzed changes in gene expression in the liver tissue of offspring using DNA microarrays. We demonstrate that UV-Titan did not induce DNA strand breaks in the time-mated mice or their offspring. Transcriptional profiling of newborn liver tissue revealed changes in the expression of genes related to the retinoic acid (RA) signalling pathway in the females, while gene expression in male offspring was relatively unaffected by exposure. Time-mated, nulliparous mice (C57BL/6BomTac, Taconic Europe, Ejby, Denmark) were exposed to filtered clean air or approximately 42 mg/m3 UV-Titan on GD 8M-bM-^@M-^S18 for 1 hr/day by a whole-body exposure.Delivery was expected on GD 20, and designated postnatal day (PND) 0. On PND 2, one offspring (M-bM-^@M-^\newbornM-bM-^@M-^]) per litter was killed by decapitation, to yield litters with at least 5 offspring per exposure group. The newborn offspring were collected two days after birth. On PND 23-24 (M-bM-^@M-^\at weaningM-bM-^@M-^]) one male and one female per litter were killed. Organs were dissected, weighed, placed in NUNC cryotubes, snap frozen in liquid N2 and stored at -80M-BM-0C until analysis. Exposed dams were killed on PND 24-25 (26-27 days after last exposure). DNA strad break detection was carried out in bronchoalveolar lavage fluid in dams by COMET assay. Total RNA was extracted from offspring livers and gene expression profiling was carried out on whole liver tissues from offspring. 9 UV-Titan treated and 7 controls mice consisting of 8 males and 8 females mRNA, hepatic, developmental, Toxicogenomics, nano-titanium dioxide
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