Unknown,Transcriptomics,Genomics,Proteomics

Dataset Information

Transcription profiling by array of rat macrophages from WKY/NCrl and LEW/Crl strains to determine susceptibility to glomerulonephritis

ABSTRACT: The Wistar-Kyoto (WKY) rat shows marked susceptibility to crescentic glomerulonephritis, while Lewis rats are resistant. Glomerular injury and crescent formation are macrophage-dependent. The aim of this study is to use gene expression profiling to identify genetic factors that determine macrophage activation and render WKY rats susceptibile to glomerulonephritis.

ORGANISM(S): Rattus norvegicus

SUBMITTER: Klio Maratou

PROVIDER: E-MEXP-2624 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Publications

Characterization of the macrophage transcriptome in glomerulonephritis-susceptible and -resistant rat strains.

Maratou K K Behmoaras J J Fewings C C Srivastava P P D'Souza Z Z Smith J J Game L L Cook T T Aitman T T

Genes and immunity 20101223 2

Crescentic glomerulonephritis (CRGN) is a major cause of rapidly progressive renal failure for which the underlying genetic basis is unknown. Wistar-Kyoto (WKY) rats show marked susceptibility to CRGN, whereas Lewis rats are resistant. Glomerular injury and crescent formation are macrophage dependent and mainly explained by seven quantitative trait loci (Crgn1-7). Here, we used microarray analysis in basal and lipopolysaccharide (LPS)-stimulated macrophages to identify genes that reside on pathw ...[more]

PMID: 21179115

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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

Transcription profiling by array of rat macrophages from WKY/NCrl and LEW/Crl strains to determine susceptibility to glomerulonephritis

Publications

Characterization of the macrophage transcriptome in glomerulonephritis-susceptible and -resistant rat strains.

Similar Datasets

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