Browse
Submit Data
Databases
API
Help

Dataset Information

0 Views

0 Connections

0 Citations

0 Reanalyses

0 Downloads

Omics score: 0

Rare coding variants in lupus risk genes

ABSTRACT: Systemic lupus erythematosus (SLE) is the prototypic systemic autoimmune disease. It is thought that many common variant gene loci of weak effect act additively to predispose to common autoimmune diseases, while the contribution of rare variants remains unclear. Here we describe that rare coding variants in lupus-risk genes are present in most SLE patients and healthy controls. We demonstrate the functional consequences of rare and low frequency missense variants in the interacting proteins BLK and BANK1, which are present alone, or in combination, in a substantial proportion of lupus patients. The rare variants found in patients, but not those found exclusively in controls, impair suppression of IRF5 and type-I IFN in human B cell lines and increase pathogenic lymphocytes in lupus-prone mice. Thus, rare gene variants are common in SLE and likely contribute to genetic risk.

PROVIDER: EGAS00001003548 | EGA |

REPOSITORIES: EGA

ACCESS DATA

Json Xml

Similar Datasets

Functional rare and low frequency variants in BLK and BANK contribute to human lupus pathogenesis

Project description:Systemic lupus erythematosus (SLE) is the prototypic systemic autoimmune disease. It is thought that many common variant gene loci of weak effect act additively to predispose to common autoimmune diseases, while the contribution of rare variants remains unclear. Here we describe that rare coding variants in lupus-risk genes are present in most SLE patients and healthy controls. We demonstrate the functional consequences of rare and low frequency missense variants in the interacting proteins BLK and BANK, which are present alone, or in combination, in a substantial proportion of lupus patients. The rare variant found in patients, but not those found exclusively in controls, impair suppression of IRF and type-I IFN in human B cell lines and increase pathogenic lymphocytes in lupus-prone mice. Thus, rare gene variants are common in SLE and likely contribute to genetic risk.

2019-05-01 | GSE126307 | GEO

SLEAR predisposes to systemic lupus erythematosus by regulating apoptosis [ChIRP-Seq]

Project description:Systemic lupus erythematosus (SLE) is an autoimmune disease, and affects all parts of the human body. Genome-wide association studies have been employed to identify susceptibility genes of SLE. However, most of the SLE associated variants are located in the noncoding regions of the human genome.We characterized SLE risk variants in Chinese populations. One of the most significant validated SNP was located in a gene which we named SLEAR. We found SLEAR was enriched in the nucleus and could regulate apoptosis. Apoptosis is a highly regulated process. And misregulation of the process could lead to autoimmune diseases, especially SLE. Our results suggest that the SLEAR plays a key role in apoptosis regulation and is associated with SLE predisposition.

2018-04-09 | GSE104479 | GEO

SLEAR predisposes to systemic lupus erythematosus by regulating apoptosis [RNA-Seq]

Project description:Systemic lupus erythematosus (SLE) is an autoimmune disease, and affects all parts of the human body. Genome-wide association studies have been employed to identify susceptibility genes of SLE. However, most of the SLE associated variants are located in the noncoding regions of the human genome. We characterized SLE risk variants in Chinese populations. One of the most significant validated SNP was located in a gene which we named SLEAR. We found SLEAR was enriched in the nucleus and could regulate apoptosis. Apoptosis is a highly regulated process. And misregulation of the process could lead to autoimmune diseases, especially SLE. Our results suggest that SLEAR plays a key role in apoptosis regulation and is associated with SLE predisposition.

2018-04-09 | GSE104382 | GEO

RNA-seq of peripheral blood mononuclear cell (PBMC) derived from normal healthy donors and systemic lupus erythematosus (SLE) patients

Project description:Systemic lupus erythematosus (SLE), also known simply as lupus, is an autoimmune disease. There is no cure for SLE. The mechanism involves an immune response by autoantibodies against a person's own tissues. However, the mechanism underlying imbalance of autoantibodies is not clear. In this experiment, peripheral blood was obtained from normal healthy donors and systemic lupus erythematosus (SLE) patients. Peripheral blood mononuclear cells (PBMC) were separated by Ficoll separation solution. Samples of four (total eight) donors were pooled and Samples of four (total eight) SLE patients were pooled. The aim was to characterize the mRNA profile of SLE patients compared to healthy donors and find the new target of diagnosis or treatment for SLE.

2020-08-14 | E-MTAB-7145 | biostudies-arrayexpress

Changes in the Pattern of DNA Methylation Associate with Twin Discordance in SLE

Project description:This is the first high-throughput analysis of DNA methylation in autoimmune diseases. We have used a cohort of MZ twins discordant for three diseases whose clinical signs often overlap: systemic lupus erythematosus (SLE), rheumatoid arthritis and dermatomyositis. Only MZ twins discordant for SLE featured widespread changes in the DNA methylation status of a significant number of genes. Individual analysis confirmed the existence of DNA methylation and expression changes in genes relevant to SLE pathogenesis. Our findings not only identify potentially relevant DNA methylation markers for the clinical characterization of SLE patients but also support the notion that epigenetic changes may be critical in the clinical manifestations of autoimmune disease. Total DNA isolated by standard procedures from 59 White Blood Cell (WBC) samples corresponding to monozygotic twins discordant for three different autoimmune diseases: systemic lupus erythematosus (SLE), rheumatoid arthritis (RA) and dermatomyositis (DM) and two additional controls for each MZ twin pair.

2009-11-16 | E-GEOD-19033 | biostudies-arrayexpress

Proteomic profiling of healthy and SLE isolated B-cells

Project description:B cells orchestrate the autoimmune responses in patients with systemic lupus erythematosus (SLE), but broad based B-cell directed therapies only show modest efficacy while attenuating humoral immune responses to vaccines and inducing acquired immunodeficiency. used proteomic and transcriptomic analyses of B cells from patients with SLE and healthy individuals and demonstrated a dominant DDR in SLE B cells.

2022-08-26 | PXD031389 | Pride

Targeting neddylation is a novel therapeutic strategy for lupus by reconstructing double negative T cell homeostasis

Project description:Systemic lupus erythematosus (SLE) is an autoimmune disorder with systemic inflammation, autoantibody accumulation and organ damage. The abnormalities of double-negative (DN) T cells are considered as an important commander of SLE. Neddylation, an important type of protein post-translational modification (PTM), has been well-proved to regulate T cell-mediated immune response. However, the function of neddylation in SLE remains largely unexplored. Here, we reported that neddylation inactivation with MLN4924 or genetic abrogation of Ube2m in T cells prevented SLE development for decreased DN T cell accumulation. Further investigations revealed that inactivation of neddylation blocked Bim ubiquitination degradation and maintained Bim level in DN T cells, contributing to the apoptosis of the accumulated DN T cells for Fas mutation. Then double knockout (KO) lupus-prone mice (Ube2m-/-Bim-/-lpr) were generated and results showed that loss of Bim interrupted the improvement of DN T cell apoptosis and the consequential relieved lupus symptoms for Ube2m KO. Our findings identified that neddylation inactivation promoted Bim-mediated apoptosis of DN T cells and prevented lupus progress. Clinically, we also found the percentages of DN T cells were improved accompanied with reduced apoptosis of DN T cells in SLE patients. Moreover, the neddylation of Cullin1 was higher while Bim level was decreased in SLE patients compared with healthy control. Meantime, the inhibition of neddylation induced Bim-dependent apoptosis of DN T cells isolated from SLE patients. Together, these findings provide the first evidence of the neddylation role in lupus development, suggesting a novel therapeutic strategy for lupus.

2024-01-26 | PXD045686 | Pride

Expression data from fibroblast-like synoviocytes (FLS) transfected with mimic-miR-23b or mimic-NC

Project description:We found microRNA miR-23b was down-regulated in local inflammatory tissues of autoimmune disease such as RA, SLE and related mouse models such as CIA, lpr, EAE. Re-expression of miR-23b significantly inhibits autoimmune pathogenesis of CIA, Lpr and EAE. To identify potential targets of miR-23b, we use microarray gene-expression analysis to identify transcripts which could be repressed by miR-23b. RA: rheumatoid arthritis, CIA: Collagen-induced arthritis, SLE: systemic lupus erythematosus, EAE: experimental autoimmune encephalomyelitis We tansfected fibroblast-like synoviocytes (FLS) with mimic-miR-23b or mimic-NC.Cells were collected and total RNA was extracted for the Affymetrix GeneChipÂ® Human Genome U133 Plus 2.0 Array

2012-12-19 | E-GEOD-37427 | biostudies-arrayexpress

Genome-wide peripheral blood transcriptome analysis of Arab female Lupus and Lupus nephritis

Project description:Genome-wide alternative splice analysis of RNA from lupus and its severe form lupus nephritis We aimed to explore the genome-wide peripheral blood transcriptome of lupus (SLE) and its severe form lupus nephritis (LN) cases compared to healthy subjects (HC) using high density Affymetrix Human Exon1.0.ST arrays. Analysis revealed 15 splice variants that are differentially expressed between SLE/HC and 99 variants between LN/HC (pâ¤0.05,SI>orâ¤0.5,Benjamin Hochberg-False discovery rate correction). Comparison between LN/SLE revealed 7 variants that are differentially expressed with pâ¤0.05,SI>0.5,Benjamin Hochberg-FDR correction. Pathway analysis of differentially spliced genes revealed 11 significant pathways in SLE and 12 in LN (p<0.05). Analysis of peripheral blood transcriptome revealed signature causative genes that are alternatively spliced, signifying their clinical relevance in the pathophysiology of disease. The extent of differential splicing was found to be higher in LN than in SLE, signifying the need for further in-depth research in the same domain. Present study is the first to reveal the significance of alternative variants in susceptibility to SLE and LN. We analyzed blood from 11 female subjects (5 lupus, 3 lupus nephritis and 3 healthy control) using the Affymetrix Human Exon 1.0 ST platform. Array data was processed by Alt Analyze and Genespring software. No techinical replicates were performed. One of the outiler sample (HC2) was excluded from further analysis.

2016-01-06 | E-GEOD-62764 | biostudies-arrayexpress

Expression data from fibroblast-like synoviocytes (FLS) transfected with mimic-miR-23b or mimic-NC

2012-12-19 | GSE37427 | GEO