Expression profiling of adult mouse brain and liver tissues (RNA-seq)
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PROVIDER: PRJEB16747 | ENA |
REPOSITORIES: ENA
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Project description:5-hydroxymethylcytosine (5hmC) methylation profiling of adult mouse brain and liver tissues (hMeDIP-seq)
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Project description:We carried out total RNA sequencing on RNA extracted from 5 brain subregions (cerebellum, cortex, hippocampus, hypothalamus and thalamus) and liver tissues of wild-type mice at 3 months of age. In total, two female and two male mice were used to obtain biological replicates for appropriate statistical analysis. Not only is this dataset used to perform expression analysis between brain subregions and between brain and liver, it is also used in-conjunction with 5hmC-seq methylation profiles that we performed to study the association between 5hmC and gene expression. Stranded RNA-seq library was prepared and sequenced on a HiSeq2500 by single end sequencing with 100 bp read length.
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Project description:5-hydroxymethylcytosine (5hmC) is the first oxidative product of the TET-mediated 5-methylcytosine (5mC) demethylation pathway. It is a key intermediate in cytosine demethylation, and have potential regulatory functions with emerging importance in mammalian biology. In this work, we used a chemical capture-based technique that coupled with next-generation sequencing to investigate the global 5hmC methylation in five brain subregions (cerebellum, cortex, hippocampus, hypothalamus and thalamus) and liver tissues from female and male adult mice. We also performed total RNA sequencing to study the association between 5hmC and gene expression. The enriched 5-hmC library was sequenced on a HiSeq2500 by paired-end sequencing with 100 bp read length.
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Project description:To determine the circRNA expression profile in hepar tissues of 12h after brain death donor liver transplantation and matched non-brain death donor liver transplantation, we uesed circRNA microArray analysis form Arraystar to examine the expression of circRNAs and circRNAs in hepar tissues of 12h after brain death donor liver transplantation and matched non-brain death donor liver transplantation.
2020-04-10 | GSE119748 | GEO
Project description:We used microarray analyses in adult female zebrafish (Danio rerio) to identify metabolic pathways regulated by starvation in two key organs that 1) serve biosynthetic and energy mobilizing functions (liver) and 2) consume energy and direct behavioral responses (brain). Starvation affected the expression of 574 transcripts in the liver, indicating an overall decrease in metabolic activity, reduced lipid metabolism, protein biosynthesis and proteolysis, and cellular respiration, and increased gluconeogenesis. Starvation also regulated expression of many components of the Unfolded Protein Response, the first such report in a species other than yeast (Saccharomyces cerevisiae) and mice (Mus musculus). The response of the zebrafish hepatic transcriptome to starvation was strikingly similar to that of rainbow trout (Oncorhynchus mykiss), but very different from common carp (Cyprinus carpio) and mouse. The transcriptome of zebrafish whole brain was much less affected than the liver, with only two differentially expressed genes, both down-regulated. Down-regulation of one of these genes, matrix metalloproteinase 9 (mmp9), suggests increased inhibition of apoptosis (neuroprotection) and decreased restructuring of the extracellular matrix in the brain of starved zebrafish. The low level of response in the transcriptome of whole zebrafish brain agrees with observations that the brain is metabolically protected compared to the rest of the body. Experiment Overall Design: Brain treatments: Starved (21 days) and Control (Fed). Four microarrays per treatment. Experiment Overall Design: Liver treatments: Starved (21 days) and Control (Fed). Five microarrays per treatment. Experiment Overall Design: Data for brain and liver were normalized and analyzed separately because variances of expression differed considerably between the tissues.
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Project description:The current model to explain the organization of the mammalian nervous system is based on studies of anatomy, embryology, and evolution. To further investigate the molecular organization of the adult mammalian brain, we have built a gene expression-based brain map. We measured gene expression patterns for 24 neural tissues covering the mouse central nervous system and found, surprisingly, that the adult brain bears a transcriptional "imprint" consistent with both embryological origins and classic evolutionary relationships. Embryonic cellular position along the anterior-posterior axis of the neural tube was shown to be closely associated with, and possibly a determinant of, the gene expression patterns in adult structures. We also observed a significant number of embryonic patterning and homeobox genes with region-specific expression in the adult nervous system. The relationships between global expression patterns for different anatomical regions and the nature of the observed region-specific genes suggest that the adult brain retains a degree of overall gene expression established during embryogenesis that is important for regional specificity and the functional relationships between regions in the adult. The complete collection of extensively annotated gene expression data along with data mining and visualization tools have been made available on a publicly accessible web site (www.barlow-lockhartbrainmapnimhgrant.org). Keywords: multiple strain, multiple tissues
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