Unknown,Transcriptomics,Genomics,Proteomics

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An RNASeq normal tissue atlas for mouse and rat

ABSTRACT: The function of a gene is closely connected to its expression specificity across tissues and cell types. RNA-Seq is a powerful quantitative tool to explore genome wide expression. The aim of the present study is to provide a comprehensive RNA-Seq dataset across the same 13 tissues for mouse and rat, two of the most relevant species for biomedical research. The dataset provides the transcriptome across tissues from three male C57BL6 mice and three male Han Wistar rats. We also describe our bioinformatics pipeline to process and technically validate the data. Principal component analysis shows that tissue samples from both species cluster similarly. By comparative genomics we show that many genes with high sequence identity with respect to their human orthologues have also a highly correlated tissue distribution profile and are in agreement with manually curated literature data for human. These results make us confident that the present study provides a unique resource for comparative genomics and will facilitate the analysis of tissue specificity and cross-species conservation in higher organisms.

INSTRUMENT(S): Illumina HiSeq 2000

ORGANISM(S): Rattus norvegicus

SUBMITTER: Eric Simon

PROVIDER: E-MTAB-6081 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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An RNA-Seq atlas of gene expression in mouse and rat normal tissues.

Söllner Julia F JF Leparc German G Hildebrandt Tobias T Klein Holger H Thomas Leo L Stupka Elia E Simon Eric E

Scientific data 20171212

Gene functionality is closely connected to its expression specificity across tissues and cell types. RNA-Seq is a powerful quantitative tool to explore genome wide expression. The aim of this study is to provide a comprehensive RNA-Seq dataset across the same 13 tissues for mouse and rat, two of the most relevant species for biomedical research. The dataset provides the transcriptome across tissues from three male C57BL6 mice and three male Han Wistar rats. We also describe our bioinformatics pi ...[more]

PMID: 29231921

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Project description:We investigated a glomerulonephritis (GN) model in rats induced by nephrotoxic serum (NTS) which contains antibodies against the glomerular basement membrane (GBM). The anti-GBM GN model in rats is widely used since its biochemical and histopathological characteristics are similar to crescentic nephritis and Goodpasture's disease in humans. Male Wistar Kyoto (WKY) and Sprague Dawley (SD) rats were dosed once with 1, 2.5 and 5 ml/kg nephrotoxic serum (NTS) or 1.5 and 5 ml/kg NTS, respectively. GN and tubular damage were observed histopathologically in all treated rats after 14 days. To obtain insight into molecular processes during GN pathogenesis, mRNA expression was investigated in WKY and SD kidneys. The immunopathological processes during GN are still not fully understood and likely involve both innate and adaptive immunity. In the present study, several hundred mRNAs were found deregulated, which functionally were mostly associated with inflammation and regeneration. The ?-chain of the major histocompatibility complex class II RT1.B (Rt1-Bb) and complement component 6 (C6) were identified as two mRNAs differentially expressed between WKY and SD rat strains which could be related to known different susceptibilities to NTS of different rat strains; both were increased in WKY and decreased in SD rats. Increased Rt1-Bb expression in WKY rats could indicate a stronger and more persistent cellular reaction of the adaptive immune system in this strain, in line with findings indicating adaptive immune reactions during GN. The complement cascade is also known to be essential for GN development, especially terminal cascade products like C6. Two different rat strains (WKY and SD) were dosed with different doses of NTS and after 14 days rats were euthanized and kidneys were removed for RNA extraction and hybridization on Affymetrix microarrays. We sought to analyze the deregulation of gene expression during NTS-induced glomerulonephritis and to compare the effect in the two rat strains.

Dataset Information

An RNASeq normal tissue atlas for mouse and rat

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An RNA-Seq atlas of gene expression in mouse and rat normal tissues.

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