Glomerular transcriptomic analysis of the influence of Genetic background effect during anti-GBM glomerulonephritis in mice
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ABSTRACT:
ORGANISM(S): Mus musculus
PROVIDER: GSE56236 | GEO | 2014/07/14
SECONDARY ACCESSION(S): PRJNA242677
REPOSITORIES: GEO
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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.
2015-07-06 | E-GEOD-64265 | biostudies-arrayexpress
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 β-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.
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Project description:Expression data from rat with anti-glomerular basement membrane nephritis (anti-GBM). We used microarrays to analyze the transcriptome of kidney from anti-GBM model rat with or without drug treatment RNA from whole kidneys was extracted and processed for hybridization on Affymetrix microarrays.
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Project description:Classical dendritic cells (DCs) are key players at the interface between innate and adaptive immunity. In the kidney exist 2 major subsets of cDCs: CD11b+ cDCs and CD103+ cDCs. We investigated their function in the most widely used model of experimental glomerulonephritis (GN) in mice: nephrotoxic nephritis (NTN). Consistent with a role for cDCs in nephrotoxic nephritis, depletion of ZBTB46+ cells (all cDCs) attenuated kidney injury, while deficiency of the CD103+ subset of cDCs accelerated injury via a mechanism that involved increased neutrophils. This RNAseq was performed to analyze transcriptional changes in FACS-sorted renal CD11b+ and CD103+ cDCs under healthy conditions and at day 7 of NTN to reveal why both subsets have different functions in GN.
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Project description:The glucocorticoid-inducible protein annexin A1 has been shown to function as key-regulator of the resolution phase of inflammation but its role in immune-mediated crescentic glomerulonephritis has not been studied so far. Acute crescentic glomerulonephritis was induced in annexin A1 deficient and wildtype mice using a sheep serum against rat glomerular basement membrane constituents. Alterations in gene expression were determined by RNA-Seq and gene ontology analysis. Intrinsic annexin A1 has a protective effect in reducing pro-inflammatory signals and infiltration of neutrophil granulocytes during crescentic GN. The annexin A1 signaling cascade may therefore provide novel targets for the treatment of inflammatory kidney disease.
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Project description:In this study, we employed high-throughput RNA sequencing (RNA-Seq) to identify the Smad3-dependent lncRNAs related to renal inflammation and fibrosis in Smad3 knockout (KO) mouse models of unilateral ureteral obstructive nephropathy (UUO) and immunologically-induced anti-glomerular basement membrane glomerulonephritis (anti-GBM GN). 12 kidney tissue samples of Smad3 KO/WT mice from normal control, UUO at day 5 or anti-GBM GN at day 10 models (n=2 in each group) for whole transcriptome RNA-sequencing.
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Project description:We previously showed that the rupture of Bowman’s capsule (BC) promotes the progression of crescent glomerulonephritis by enhancing CD8+ T cell entry into the glomeruli. In the present study, we utilized digital spatial profiling to simultaneously profile the altered mRNA transcript and protein abundances in the glomerular and periglomerular areas of biopsy samples of ANCA-associated glomerulonephritis. The paraffin-embedded biopsy samples were stained with Collagen IV, CD45, and Syto13 to distinguish the glomeruli with crescent formation but intact BC, with focal BC rupture, and with extensive rupture of BC and glomeruli without crescent formation and leukocytes infiltration in ANCA-GN. By assessing multiple discrete glomerular areas, we found that the transcript expression level of secreted phosphoprotein 1and its receptor CD44 were upregulated significantly in the glomeruli with more severe ruptures of BC, and their expression levels correlated positively with the fibrotic markers. We also found that 1) both alternative and classic complement pathways were activated in the glomeruli from patients with ANCA-GN; 2) M1 macrophages involved mostly in the early stage of BC rupture while M2 macrophages were involved in the late stage and may contribute to the fibrosis process of the crescents, and 3) apoptosis is likely the mechanism mediating the loss of glomerular cells in ANCA-GN. Our results demonstrate that digital spatial profiling allows the comparative analysis of mRNA and protein profiles in the individual glomeruli affected differently by the disease processes and to identify potential novel mechanisms in patients with ANCA-GN.
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Project description:We previously showed that the rupture of Bowman’s capsule (BC) promotes the progression of crescent glomerulonephritis by enhancing CD8+ T cell entry into the glomeruli. In the present study, we utilized digital spatial profiling to simultaneously profile the altered mRNA transcript and protein abundances in the glomerular and periglomerular areas of biopsy samples of ANCA-associated glomerulonephritis. The paraffin-embedded biopsy samples were stained with Collagen IV, CD45, and Syto13 to distinguish the glomeruli with crescent formation but intact BC, with focal BC rupture, and with extensive rupture of BC and glomeruli without crescent formation and leukocytes infiltration in ANCA-GN. By assessing multiple discrete glomerular areas, we found that the transcript expression level of secreted phosphoprotein 1and its receptor CD44 were upregulated significantly in the glomeruli with more severe ruptures of BC, and their expression levels correlated positively with the fibrotic markers. We also found that 1) both alternative and classic complement pathways were activated in the glomeruli from patients with ANCA-GN; 2) M1 macrophages involved mostly in the early stage of BC rupture while M2 macrophages were involved in the late stage and may contribute to the fibrosis process of the crescents, and 3) apoptosis is likely the mechanism mediating the loss of glomerular cells in ANCA-GN. Our results demonstrate that digital spatial profiling allows the comparative analysis of mRNA and protein profiles in the individual glomeruli affected differently by the disease processes and to identify potential novel mechanisms in patients with ANCA-GN.
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Project description:In this study, we employed high-throughput RNA sequencing (RNA-Seq) to identify the Smad3-dependent lncRNAs related to renal inflammation and fibrosis in Smad3 knockout (KO) mouse models of unilateral ureteral obstructive nephropathy (UUO) and immunologically-induced anti-glomerular basement membrane glomerulonephritis (anti-GBM GN).
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