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Huang SUS, Kulatunge O, O'Sullivan KM. Deciphering the Genetic Code of Autoimmune Kidney Diseases. Genes (Basel) 2023; 14:genes14051028. [PMID: 37239388 DOI: 10.3390/genes14051028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Revised: 04/26/2023] [Accepted: 04/26/2023] [Indexed: 05/28/2023] Open
Abstract
Autoimmune kidney diseases occur due to the loss of tolerance to self-antigens, resulting in inflammation and pathological damage to the kidneys. This review focuses on the known genetic associations of the major autoimmune kidney diseases that result in the development of glomerulonephritis: lupus nephritis (LN), anti-neutrophil cytoplasmic associated vasculitis (AAV), anti-glomerular basement disease (also known as Goodpasture's disease), IgA nephropathy (IgAN), and membranous nephritis (MN). Genetic associations with an increased risk of disease are not only associated with polymorphisms in the human leukocyte antigen (HLA) II region, which governs underlying processes in the development of autoimmunity, but are also associated with genes regulating inflammation, such as NFkB, IRF4, and FC γ receptors (FCGR). Critical genome-wide association studies are discussed both to reveal similarities in gene polymorphisms between autoimmune kidney diseases and to explicate differential risks in different ethnicities. Lastly, we review the role of neutrophil extracellular traps, critical inducers of inflammation in LN, AAV, and anti-GBM disease, where inefficient clearance due to polymorphisms in DNase I and genes that regulate neutrophil extracellular trap production are associated with autoimmune kidney diseases.
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Affiliation(s)
- Stephanie U-Shane Huang
- Department of Medicine, Centre for Inflammatory Diseases, Monash University, Clayton, VIC 3168, Australia
| | - Oneli Kulatunge
- Department of Medicine, Centre for Inflammatory Diseases, Monash University, Clayton, VIC 3168, Australia
| | - Kim Maree O'Sullivan
- Department of Medicine, Centre for Inflammatory Diseases, Monash University, Clayton, VIC 3168, Australia
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2
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Chen JQ, Zhang N, Su ZL, Qiu HG, Zhuang XG, Tao ZH. Integrated Analysis to Obtain Potential Prognostic Signature in Glioblastoma. Front Integr Neurosci 2022; 15:717629. [PMID: 35069135 PMCID: PMC8766324 DOI: 10.3389/fnint.2021.717629] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Accepted: 11/29/2021] [Indexed: 11/13/2022] Open
Abstract
Glioblastoma multiforme (GBM) is the most malignant and multiple tumors of the central nervous system. The survival rate for GBM patients is less than 15 months. We aimed to uncover the potential mechanism of GBM in tumor microenvironment and provide several candidate biomarkers for GBM prognosis. In this study, ESTIMATE analysis was used to divide the GBM patients into high and low immune or stromal score groups. Microenvironment associated genes were filtered through differential analysis. Weighted gene co-expression network analysis (WGCNA) was performed to correlate the genes and clinical traits. The candidate genes’ functions were annotated by enrichment analyses. The potential prognostic biomarkers were assessed by survival analysis. We obtained 81 immune associated differentially expressed genes (DEGs) for subsequent WGCNA analysis. Ten out of these DEGs were significantly associated with targeted molecular therapy of GBM patients. Three genes (S100A4, FCGR2B, and BIRC3) out of these genes were associated with overall survival and the independent test set testified the result. Here, we obtained three crucial genes that had good prognostic efficacy of GBM and may help to improve the prognostic prediction of GBM.
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Affiliation(s)
- Jia-Qi Chen
- Department of Laboratory Medicine, The Second Affiliated Hospital of Zhejiang University, Hangzhou, China
- Department of Clinical Laboratory, The People’s Hospital of Lishui, Lishui, China
| | - Nuo Zhang
- Beijing Rehabilitation Hospital of Capital Medical University, Beijing, China
| | - Zhi-Lin Su
- Department of Laboratory Medicine, The First Affiliated Hospital of Xiamen University, Xiamen, China
| | - Hui-Guo Qiu
- Department of Laboratory Medicine, The First Affiliated Hospital of Xiamen University, Xiamen, China
| | - Xin-Guo Zhuang
- Department of Laboratory Medicine, The First Affiliated Hospital of Xiamen University, Xiamen, China
| | - Zhi-hua Tao
- Department of Laboratory Medicine, The Second Affiliated Hospital of Zhejiang University, Hangzhou, China
- *Correspondence: Zhi-hua Tao,
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3
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Li F, Jin Y, Pei X, Guo P, Dong K, Wang H, Chen Y, Guo P, Meng LB, Wang Z. Bioinformatics analysis and verification of gene targets for renal clear cell carcinoma. Comput Biol Chem 2021; 92:107453. [PMID: 33636636 DOI: 10.1016/j.compbiolchem.2021.107453] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2020] [Revised: 06/09/2020] [Accepted: 02/05/2021] [Indexed: 12/22/2022]
Abstract
BACKGROUND It is estimated that there are 338,000 new renal-cell carcinoma releases every year in the world. Renal cell carcinoma (RCC) is a heterogeneous tumor, of which more than 70% is clear cell renal cell carcinoma (ccRCC). It is estimated that about 30% of new renal-cell carcinoma patients have metastases at the time of diagnosis. However, the pathogenesis of renal clear cell carcinoma has not been elucidated. Therefore, it is necessary to further study the pathogenesis of ccRCC. METHODS Two expression profiling datasets (GSE68417, GSE71963) were downloaded from the GEO database. Differentially expressed genes (DEGs) between ccRCC and normal tissue samples were identified by GEO2R. Functional enrichment analysis was made by the DAVID tool. Protein-protein interaction (PPI) network was constructed. The hub genes were excavated. The clustering analysis of expression level of hub genes was performed by UCSC (University of California Santa Cruz) Xena database. The hub gene on overall survival rate (OS) in patients with ccRCC was performed by Kaplan-Meier Plotter. Finally, we used the ccRCC renal tissue samples to verify the hub genes. RESULTS 1182 common DEGs between the two datasets were identified. The results of GO and KEGG analysis revealed that variations in were predominantly enriched in intracellular signaling cascade, oxidation reduction, intrinsic to membrane, integral to membrane, nucleoside binding, purine nucleoside binding, pathways in cancer, focal adhesion, cell adhesion molecules. 10 hub genes ITGAX, CD86, LY86, TLR2, TYROBP, FCGR2A, FCGR2B, PTPRC, ITGB2, ITGAM were identified. FCGR2B and TYROBP were negatively correlated with the overall survival rate in patients with ccRCC (P < 0.05). RT-qPCR analysis showed that the relative expression levels of CD86, FCGR2A, FCGR2B, TYROBP, LY86, and TLR2 were significantly higher in ccRCC samples, compared with the adjacent renal tissue groups. CONCLUSIONS In summary, bioinformatics technology could be a useful tool to predict the progression of ccRCC. In addition, there are DEGs between ccRCC tumor tissue and normal renal tissue, and these DEGs might be considered as biomarkers for ccRCC.
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Affiliation(s)
- Feng Li
- Department of Urology, The Fourth Hospital of Hebei Medical University, No.12 Jiankang Road Shijiazhuang, 050011, Hebei Province, China.
| | - Yi Jin
- Department of Oncology, Affiliated Xing Tai People Hospital of Hebei Medical University, Xingtai, 054001, Hebei Province, China.
| | - Xiaolu Pei
- Department of Oncology, The Heibei General Hospital, No.348 Heping Road Shijiazhuang, 050051, Hebei Province, China.
| | - Peiyuan Guo
- School of Basic Medical Sciences, Hebei Medical University, 361 Zhongshan East Road, Shijiazhuang, Hebei, 050017, China.
| | - Keqin Dong
- School of Basic Medical Sciences, Hebei Medical University, 361 Zhongshan East Road, Shijiazhuang, Hebei, 050017, China.
| | - Haoyuan Wang
- School of Basic Medical Sciences, Hebei Medical University, 361 Zhongshan East Road, Shijiazhuang, Hebei, 050017, China.
| | - Yujia Chen
- School of Basic Medical Sciences, Hebei Medical University, 361 Zhongshan East Road, Shijiazhuang, Hebei, 050017, China.
| | - Peng Guo
- Department of Orthopedics, The Fourth Hospital of Hebei Medical University, No.12 Jiankang Road Shijiazhuang, 050011, Hebei Province, China.
| | - Ling-Bing Meng
- School of Basic Medical Sciences, Hebei Medical University, 361 Zhongshan East Road, Shijiazhuang, Hebei, 050017, China.
| | - Zhiyu Wang
- Department of Immuno-oncology, The Fourth Hospital of Hebei Medical University, No.12 Jiankang Road Shijiazhuang, 050011, Hebei Province, China.
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Abstract
Anti-glomerular basement membrane (anti-GBM) disease is a rare autoimmune small vessel vasculitis characterized by autoreactivity to antigens in type IV collagen chains expressed in glomerular and alveolar basement membrane. The detection of circulating anti-GBM antibodies, which are shown to be directly pathogenic, is central to disease diagnosis. Clinically, anti-GBM disease usually presents with rapidly progressive glomerulonephritis with or without alveolar hemorrhage. Rapid diagnosis and early treatment are required to prevent mortality and to preserve renal function. Relapse in anti-GBM disease is uncommon. Variant and atypical forms of anti-GBM disease are increasingly recognised.
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Horvei KD, Pedersen HL, Fismen S, Thiyagarajan D, Schneider A, Rekvig OP, Winkler TH, Seredkina N. Lupus nephritis progression in FcγRIIB-/-yaa mice is associated with early development of glomerular electron dense deposits and loss of renal DNase I in severe disease. PLoS One 2017; 12:e0188863. [PMID: 29190833 PMCID: PMC5708736 DOI: 10.1371/journal.pone.0188863] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2017] [Accepted: 11/14/2017] [Indexed: 12/20/2022] Open
Abstract
FcγRIIB-/-yaa mice develop severe lupus glomerulonephritis due to lack of an inhibitory immune cell receptor combined with a Y-chromosome linked autoimmune accelerator mutation. In the present study, we have investigated nephritis development and progression in FcγRIIB-/-yaa mice to find shared features with NZB/NZW F1 lupus prone mice and human disease. We sacrificed 25 male FcγRIIB-/-yaa mice at various disease stages, and grouped them according to activity and chronicity indices for lupus nephritis. Glomerular morphology and localization of electron dense deposits containing IgG were further determined by immune electron microscopy. Renal DNase I and pro-inflammatory cytokine mRNA levels were measured by real-time quantitative PCR. DNase I protein levels was assessed by immunohistochemistry and zymography. Our results demonstrate early development of electron dense deposits containing IgG in FcγRIIB-/-yaa mice, before detectable levels of serum anti-dsDNA antibodies. Similar to NZB/NZW F1, electron dense deposits in FcγRIIB-/-yaa progressed from being confined to the mesangium in the early stage of lupus nephritis to be present also in capillary glomerular basement membranes. In the advanced stage of lupus nephritis, renal DNase I was lost on both transcriptional and protein levels, which has previously been shown in NZB/NZW F1 mice and in human disease. Although lupus nephritis appears on different genetic backgrounds, our findings suggest similar processes when comparing different murine models and human lupus nephritis.
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Affiliation(s)
- Kjersti Daae Horvei
- RNA and Molecular Pathology Research Group, Department of Medical Biology, Faculty of Health Sciences, UIT-The Arctic University of Norway, Tromsø, Norway
| | - Hege Lynum Pedersen
- RNA and Molecular Pathology Research Group, Department of Medical Biology, Faculty of Health Sciences, UIT-The Arctic University of Norway, Tromsø, Norway
| | - Silje Fismen
- RNA and Molecular Pathology Research Group, Department of Medical Biology, Faculty of Health Sciences, UIT-The Arctic University of Norway, Tromsø, Norway
| | - Dhivya Thiyagarajan
- RNA and Molecular Pathology Research Group, Department of Medical Biology, Faculty of Health Sciences, UIT-The Arctic University of Norway, Tromsø, Norway
| | - Andrea Schneider
- Department of Biology, Nikolaus-Fiebiger-Zentrum für Molekulare Medizin, Friedrich-Alexander Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Ole Petter Rekvig
- RNA and Molecular Pathology Research Group, Department of Medical Biology, Faculty of Health Sciences, UIT-The Arctic University of Norway, Tromsø, Norway
| | - Thomas H Winkler
- Department of Biology, Nikolaus-Fiebiger-Zentrum für Molekulare Medizin, Friedrich-Alexander Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Natalya Seredkina
- RNA and Molecular Pathology Research Group, Department of Medical Biology, Faculty of Health Sciences, UIT-The Arctic University of Norway, Tromsø, Norway
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Abstract
Anti-glomerular basement membrane (anti-GBM) disease is a rare small vessel vasculitis that affects the capillary beds of the kidneys and lungs. It is an archetypic autoimmune disease, caused by the development of directly pathogenic autoantibodies targeting a well characterized autoantigen expressed in the basement membranes of these organs, although the inciting events that induce the autoimmune response are not fully understood. The recent confirmation of spatial and temporal clustering of cases suggests that environmental factors, including infection, may trigger disease in genetically susceptible individuals. The majority of patients develop widespread glomerular crescent formation, presenting with features of rapidly progressive GN, and 40%-60% will have concurrent alveolar hemorrhage. Treatment aims to rapidly remove pathogenic autoantibody, typically with the use of plasma exchange, along with steroids and cytotoxic therapy to prevent ongoing autoantibody production and tissue inflammation. Retrospective cohort studies suggest that when this combination of treatment is started early, the majority of patients will have good renal outcome, although presentation with oligoanuria, a high proportion of glomerular crescents, or kidney failure requiring dialysis augur badly for renal prognosis. Relapse and recurrent disease after kidney transplantation are both uncommon, although de novo anti-GBM disease after transplantation for Alport syndrome is a recognized phenomenon. Copresentation with other kidney diseases such as ANCA-associated vasculitis and membranous nephropathy seems to occur at a higher frequency than would be expected by chance alone, and in addition atypical presentations of anti-GBM disease are increasingly reported. These observations highlight the need for future work to further delineate the immunopathogenic mechanisms of anti-GBM disease, and how to better refine and improve treatments, particularly for patients presenting with adverse prognostic factors.
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Affiliation(s)
- Stephen P McAdoo
- Renal and Vascular Inflammation Section, Department of Medicine, Imperial College London, London, United Kingdom
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7
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McAdoo SP, Pusey CD. Clustering of Anti-GBM Disease: Clues to an Environmental Trigger? Clin J Am Soc Nephrol 2016; 11:1324-1326. [PMID: 27401526 PMCID: PMC4974878 DOI: 10.2215/cjn.05580516] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Stephen P. McAdoo
- Renal and Vascular Inflammation Section, Department of Medicine, Imperial College London, London, United Kingdom; and
- Vasculitis Clinic, Hammersmith Hospital, Imperial College Healthcare National Health Service Trust, London, United Kingdom
| | - Charles D. Pusey
- Renal and Vascular Inflammation Section, Department of Medicine, Imperial College London, London, United Kingdom; and
- Vasculitis Clinic, Hammersmith Hospital, Imperial College Healthcare National Health Service Trust, London, United Kingdom
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8
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Abstract
Basement membrane components are targets of autoimmune attack in diverse diseases that destroy kidneys, lungs, skin, mucous membranes, joints, and other organs in man. Epitopes on collagen and laminin, in particular, are targeted by autoantibodies and T cells in anti-glomerular basement membrane glomerulonephritis, Goodpasture's disease, rheumatoid arthritis, post-lung transplant bronchiolitis obliterans syndrome, and multiple autoimmune dermatoses. This review examines major diseases linked to basement membrane autoreactivity, with a focus on investigations in patients and animal models that advance our understanding of disease pathogenesis. Autoimmunity to glomerular basement membrane type IV is discussed in depth as a prototypic organ-specific autoimmune disease yielding novel insights into the complexity of anti-basement membrane immunity and the roles of genetic and environmental susceptibility.
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Gillis C, Gouel-Chéron A, Jönsson F, Bruhns P. Contribution of Human FcγRs to Disease with Evidence from Human Polymorphisms and Transgenic Animal Studies. Front Immunol 2014; 5:254. [PMID: 24910634 PMCID: PMC4038777 DOI: 10.3389/fimmu.2014.00254] [Citation(s) in RCA: 87] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2014] [Accepted: 05/14/2014] [Indexed: 11/13/2022] Open
Abstract
The biological activities of human IgG antibodies predominantly rely on a family of receptors for the Fc portion of IgG, FcγRs: FcγRI, FcγRIIA, FcγRIIB, FcγRIIC, FcγRIIIA, FcγRIIIB, FcRL5, FcRn, and TRIM21. All FcγRs bind IgG at the cell surface, except FcRn and TRIM21 that bind IgG once internalized. The affinity of FcγRs for IgG is determined by polymorphisms of human FcγRs and ranges from 2 × 104 to 8 × 107 M−1. The biological functions of FcγRs extend from cellular activation or inhibition, IgG-internalization/endocytosis/phagocytosis to IgG transport and recycling. This review focuses on human FcγRs and intends to present an overview of the current understanding of how these receptors may contribute to various pathologies. It will define FcγRs and their polymorphic variants, their affinity for human IgG subclasses, and review the associations found between FcγR polymorphisms and human pathologies. It will also describe the human FcγR-transgenic mice that have been used to study the role of these receptors in autoimmune, inflammatory, and allergic disease models.
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Affiliation(s)
- Caitlin Gillis
- Laboratoire Anticorps en Thérapie et Pathologie, Département d'Immunologie, Institut Pasteur , Paris , France ; U760, INSERM , Paris , France
| | - Aurélie Gouel-Chéron
- Laboratoire Anticorps en Thérapie et Pathologie, Département d'Immunologie, Institut Pasteur , Paris , France ; U760, INSERM , Paris , France ; Department of Anesthesia and Intensive Care, Hospital of Bichat-Claude Bernard, Public Assistance-Hospitals of Paris , Paris , France
| | - Friederike Jönsson
- Laboratoire Anticorps en Thérapie et Pathologie, Département d'Immunologie, Institut Pasteur , Paris , France ; U760, INSERM , Paris , France
| | - Pierre Bruhns
- Laboratoire Anticorps en Thérapie et Pathologie, Département d'Immunologie, Institut Pasteur , Paris , France ; U760, INSERM , Paris , France
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10
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Abstract
Fc receptors play a central role in maintaining the homeostatic balance in the immune system. Our knowledge of the structure and function of these receptors and their naturally occurring polymorphisms, including single nucleotide polymorphisms and/or copy number variations, continues to expand. Through studies of their impact on human biology and clinical phenotype, the contributions of these variants to the pathogenesis, progression, and/or treatment outcome of many diseases that involve immunoglobulin have become evident. They affect susceptibility to bacterial and viral pathogens, constitute as risk factors for IgG or IgE mediated inflammatory diseases, and impact the development of many autoimmune conditions. In this chapter, we will provide an overview of these genetic variations in classical FcγRs, FcRLs, and other Fc receptors, as well as challenges in achieving an accurate and comprehensive understanding of the FcR polymorphisms and genomic architecture.
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Affiliation(s)
- Marc Daeron
- grid.428999.70000000123536535Institut Pasteur, Paris, France
| | - Falk Nimmerjahn
- grid.5330.50000000121073311Department of Biology, Institute of Genetics, University of Erlangen-Nürnberg, Erlangen, Germany
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11
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Typiak MJ, Rębała K, Dudziak M, Dubaniewicz A. Polymorphism of FCGR3A gene in sarcoidosis. Hum Immunol 2014; 75:283-8. [PMID: 24530756 DOI: 10.1016/j.humimm.2014.02.011] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2013] [Revised: 01/03/2014] [Accepted: 02/04/2014] [Indexed: 12/13/2022]
Abstract
We showed increased level of immune complexes (ICs) with mycobacterial heat shock proteins (Mtb-hsp) and increased expression of receptors for Fc fragment of immunoglobulin G (FcγR) I-III on blood monocytes with their increased phagocytic activity, responsible for clearance of these ICs in sarcoidosis (SA). Since FcγRIIIa is the most crucial in this process, we genotyped 77 SA patients and 143 healthy controls with polymerase chain reaction for V158F polymorphism of FCGR3A gene, encoding FcγRIIIa. We revealed significantly higher percentage of 158F and 158FF and lower of 158FV variants in Stage I of SA versus controls. Conversely, in Stage II of SA, we found increase in 158VV homozygotes versus controls. We also showed significant increase of 158F and 158FF variants in Stage I vs II and of 158V in Stage II vs I. Therefore, in Stage I, 158F allele may cause decreased FcγRIIIa affinity and clearance of ICs, whereas in Stage II, 158V allele may cause effective FcγRIIIa affinity to ICs with e.g. mycobacteria, their phagocytosis, Mtb-hsp secretion with ICs formation, Mtb-hsp epitope spread and subsequent immune reaction. Thus, V158F polymorphism of FCGR3A may explain the immunocomplexemia in our patients and might serve as prognostic marker of clinical course of sarcoidosis.
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Affiliation(s)
- Marlena J Typiak
- Department of Pneumology, Medical University of Gdansk, Debinki 7 St, 80-211 Gdansk, Poland.
| | - Krzysztof Rębała
- Department of Forensic Medicine, Medical University of Gdansk, Debowa 23 St, 80-204 Gdansk, Poland.
| | - Maria Dudziak
- Non invasive Cardiac Diagnostic Department, Medical University of Gdansk, Mariana Smoluchowskiego 17 St, 80-214 Gdansk, Poland.
| | - Anna Dubaniewicz
- Department of Pneumology, Medical University of Gdansk, Debinki 7 St, 80-211 Gdansk, Poland.
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12
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Zhou XJ, Cheng FJ, Zhu L, Lv JC, Qi YY, Hou P, Zhang H. Association of systemic lupus erythematosus susceptibility genes with IgA nephropathy in a Chinese cohort. Clin J Am Soc Nephrol 2014; 9:788-97. [PMID: 24458077 DOI: 10.2215/cjn.01860213] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
BACKGROUND AND OBJECTIVES One hypothesis states that IgA nephropathy (IgAN) is a syndrome with an autoimmune component. Recent studies strongly support the notion of shared genetics between immune-related diseases. This study investigated single-nucleotide polymorphisms (SNPs) reported to be associated with systemic lupus erythematosus (SLE) in a Chinese cohort of patients with IgAN and in controls. DESIGN, SETTING, PARTICIPANTS, & MEASUREMENTS This study investigated whether SNP markers that had been reported to be associated with SLE were also associated with IgAN in a Chinese population. The study cohort consisted of 1194 patients with IgAN and 902 controls enrolled in Peking University First Hospital from 1997 to 2008. RESULTS Ninety-six SNPs mapping to 60 SLE loci with reported P values <1 × 10(-5) were investigated. CFH (P=8.41 × 10(-6)), HLA-DRA (P=4.91 × 10(-6)), HLA-DRB1 (P=9.46 × 10(-9)), PXK (P=3.62 × 10(-4)), BLK (P=9.32 × 10(-3)), and UBE2L3 (P=4.07 × 10(-3)) were identified as shared genes between IgAN and SLE. All associations reported herein were corroborated by associations at neighboring SNPs. Many of the alleles that are risk alleles for SLE are protective alleles for IgAN. By analyses of two open independent expression quantitative trait loci (eQTL) databases, correlations between genotypes and corresponding gene expression were observed (P<0.05 in multiple populations), suggesting a cis-eQTL effect. From gene-expression databases, differential expressions of these genes were observed in IgAN. Additive interactions between PXK rs6445961 and HLA-DRA rs9501626 (P=1.51 × 10(-2)), as well as multiplicative interactions between CFH rs6677604 and HLA-DRB1 rs9271366 (P=1.77 × 10(-2)), and between HLA-DRA rs9501626 and HLA-DRB1 rs9271366 (P=3.23 × 10(-2)) were observed. Disease risk decreased with accumulation of protective alleles. Network analyses highlighted four pathways: MHC class II antigen presentation, complement regulation, signaling by the B-cell receptor, and ubiquitin/proteasome-dependent degradation. CONCLUSION From this "systems genetics" perspective, these data provide important clues for future studies on pleiotropy in IgAN and lupus nephritis.
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Affiliation(s)
- Xu-Jie Zhou
- Renal Division, Peking University First Hospital; Peking University Institute of Nephrology; Key Laboratory of Renal Disease, Ministry of Health of China
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Nossent JC, Becker-Merok A, Rischmueller M, Lester S. Susceptibility for Lupus Nephritis by Low Copy Number of the FCGR3B Gene Is Linked to Increased Levels of Pathogenic Autoantibodies. Autoimmune Dis 2013; 2013:750814. [PMID: 23864940 PMCID: PMC3705838 DOI: 10.1155/2013/750814] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2013] [Accepted: 06/03/2013] [Indexed: 12/14/2022] Open
Abstract
Low copy number (CN) of the FCGR3B gene reduces FCGR3B membrane expression on neutrophils and results in clearance of a smaller amount of immune complex. We investigated FCGR3B CN in relation to the clinical phenotype in a Caucasian SLE cohort (n = 107). FCGR3B CN was determined by three different qPCR parameter estimations (Ct-, Cy0, and cpD1) and confirmed by the FCGR2C/FCGR2A paralog ratio test. Clinical and serological data were then analyzed for their association with FCGR3B CN. Low FCGR3B CN (<2) was more frequent in SLE patients than in healthy controls (n = 162) (20% versus 6%, OR 4.15, P = 0.003) and associated with higher disease activity scores (SLEDAI 10.4 versus 6.1, P = 0.03), lupus nephritis (LN) (25 versus 5%, P = 0.03), and increased levels of antibodies against dsDNA (81 versus 37 IU, P = 0.03), C1q (22 versus 6 IU, P = 0.003), and ribosomal P (10 versus 5 IU, P = 0.01). No such associations were seen with antibodies against extractable nuclear antigens or high FCGR3B CN (>2). In multivariate analyses, LN was independently associated with anti-C1q-Ab levels (P = 0.03) and low FCGR3B CN (P = 0.09). We conclude that the susceptibility for LN in patients with low FCGR3B CN is linked to increased levels of pathogenic autoantibodies.
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Affiliation(s)
- Johannes C. Nossent
- Department of Rheumatology, Institute of Clinical Medicine, University of Tromsø, 9037 Tromsø, Norway
- Department of Rheumatology, University Hospital Northern Norway, P.O. Box 14, 9038 Tromsø, Norway
- Department of Rheumatology, Basil Hetzel Institute, The Queen Elizabeth Hospital, Adelaide, SA 5020, Australia
| | - Andrea Becker-Merok
- Department of Rheumatology, Institute of Clinical Medicine, University of Tromsø, 9037 Tromsø, Norway
- Department of Rheumatology, University Hospital Northern Norway, P.O. Box 14, 9038 Tromsø, Norway
| | - Maureen Rischmueller
- Department of Rheumatology, Basil Hetzel Institute, The Queen Elizabeth Hospital, Adelaide, SA 5020, Australia
- Division of Medicine, University of Adelaide, Adelaide, SA 5000, Australia
| | - Sue Lester
- Department of Rheumatology, Basil Hetzel Institute, The Queen Elizabeth Hospital, Adelaide, SA 5020, Australia
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14
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Qu Z, Cui Z, Liu G, Zhao MH. The distribution of IgG subclass deposition on renal tissues from patients with anti-glomerular basement membrane disease. BMC Immunol 2013; 14:19. [PMID: 23586976 PMCID: PMC3648436 DOI: 10.1186/1471-2172-14-19] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2012] [Accepted: 04/08/2013] [Indexed: 11/29/2022] Open
Abstract
Background Renal injury of anti-glomerular basement membrane (GBM) disease is defined by the linear deposition of IgG along GBM and rapidly progressive glomerulonephritis. To date, the distribution of anti-GBM IgG subclasses on renal tissue is still unclear. In the current study, we investigated the deposition of the four IgG subclasses using immunohistochemistry in the renal biopsy specimens from 46 patients with anti-GBM disease. Results All four IgG subclasses can be detected within the GBM. Anti-GBM IgG3 was detected in all patients (100%), with 39 (84.8%) patients presenting with weak segmental staining and 7 (15.2%) patients with strong linear deposition. Anti-GBM IgG2 was detected in 22 (47.8%) patients, with 20 (90.9%) patients having weak segmental deposition and 2 (9.1%) patients presenting strong linear staining. Anti-GBM IgG1 and IgG4 were detected in 9 (19.6%) and 7 (15.2%) patients, respectively. IgG deposition along tubular basement membrane (TBM) was also detected in 31 (67.4%) patients. Among them, the IgG subclass distribution was similar to that of the deposition within the GBM: IgG1 6.5% (2/31), IgG2 45.2% (14/31), IgG3 100% (31/31) and IgG4 9.7% (3/31). We observed increased inflammatory cell infiltration into the interstitium in patients with increased anti-TBM IgG3 deposits (P=0.031). Conclusions Anti-GBM IgG3 predominantly deposits along GBM and TBM on renal biopsy specimens from patients with anti-GBM disease, which may be involved in the development of renal injury of the disease.
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Affiliation(s)
- Zhen Qu
- Department of Medicine, Peking University First Hospital, Beijing, China
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Hu XP, Wu JQ, Zhu LP, Wang X, Xu B, Wang RY, Ou XT, Weng XH. Association of Fcγ receptor IIB polymorphism with cryptococcal meningitis in HIV-uninfected Chinese patients. PLoS One 2012; 7:e42439. [PMID: 22879986 PMCID: PMC3411792 DOI: 10.1371/journal.pone.0042439] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2012] [Accepted: 07/06/2012] [Indexed: 11/18/2022] Open
Abstract
BACKGROUND As important regulators of the immune system, the human Fcγ receptors (FcγRs) have been demonstrated to play important roles in the pathogenesis of various infectious diseases. The aim of the present study was to identify the association between FCGR polymorphisms and cryptococcal meningitis. METHODOLOGY/PRINCIPAL FINDINGS In this case control genetic association study, we genotyped four functional polymorphisms in low-affinity FcγRs, including FCGR2A 131H/R, FCGR3A 158F/V, FCGR3B NA1/NA2, and FCGR2B 232I/T, in 117 patients with cryptococcal meningitis and 190 healthy controls by multiplex SNaPshot technology. Among the 117 patients with cryptococcal meningitis, 59 had predisposing factors. In patients with cryptococcal meningitis, the FCGR2B 232I/I genotype was over-presented (OR = 1.652, 95% CI [1.02-2.67]; P = 0.039) and the FCGR2B 232I/T genotype was under-presented (OR = 0.542, 95% CI [0.33-0.90]; P = 0.016) in comparison with control group. In cryptococcal meningitis patients without predisposing factors, FCGR2B 232I/I genotype was also more frequently detected (OR = 1.958, 95% CI [1.05-3.66]; P = 0.033), and the FCGR2B 232I/T genotype was also less frequently detected (OR = 0.467, 95% CI [0.24-0.91]; P = 0.023) than in controls. No significant difference was found among FCGR2A 131H/R, FCGR3A 158F/V, and FCGR3B NA1/NA2 genotype frequencies between patients and controls. CONCLUSION/SIGNIFICANCE We found for the first time associations between cryptococcal meningitis and FCGR2B 232I/T genotypes, which suggested that FcγRIIB might play an important role in the central nervous system infection by Cryptococcus in HIV-uninfected individuals.
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Affiliation(s)
- Xiu-Ping Hu
- Department of Infectious Diseases, Huashan Hospital, Fudan University, Shanghai, China
| | - Ji-Qin Wu
- Department of Infectious Diseases, Huashan Hospital, Fudan University, Shanghai, China
| | - Li-Ping Zhu
- Department of Infectious Diseases, Huashan Hospital, Fudan University, Shanghai, China
| | - Xuan Wang
- Department of Infectious Diseases, Huashan Hospital, Fudan University, Shanghai, China
| | - Bin Xu
- Department of Infectious Diseases, Huashan Hospital, Fudan University, Shanghai, China
| | - Rui-Ying Wang
- Department of Infectious Diseases, Huashan Hospital, Fudan University, Shanghai, China
| | - Xue-Ting Ou
- Department of Infectious Diseases, Huashan Hospital, Fudan University, Shanghai, China
| | - Xin-Hua Weng
- Department of Infectious Diseases, Huashan Hospital, Fudan University, Shanghai, China
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Lack of support for association between the copy number variants in the FCGR locus and schizophrenia: A case control study. Neurosci Lett 2012; 522:85-91. [DOI: 10.1016/j.neulet.2012.04.037] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2012] [Accepted: 04/15/2012] [Indexed: 11/22/2022]
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Duan ZH, Pan FM, Zeng Z, Zhang TC, Wang S, Li GX, Mei Y, Gao J, Ge R, Ye DQ, Zou YF, Xu SQ, Xu JH, Zhang L. TheFCGR2Brs10917661 polymorphism may confer susceptibility to ankylosing spondylitis in Han Chinese: a case–control study. Scand J Rheumatol 2012; 41:219-22. [DOI: 10.3109/03009742.2011.625972] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Sharp PEH, Martin-Ramirez J, Boross P, Mangsbo SM, Reynolds J, Moss J, Pusey CD, Cook HT, Tarzi RM, Verbeek JS. Increased incidence of anti-GBM disease in Fcgamma receptor 2b deficient mice, but not mice with conditional deletion of Fcgr2b on either B cells or myeloid cells alone. Mol Immunol 2012; 50:49-56. [PMID: 22244885 DOI: 10.1016/j.molimm.2011.12.007] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2011] [Accepted: 12/07/2011] [Indexed: 12/18/2022]
Abstract
Fcgamma receptor 2b (Fcgr2b) is the only inhibitory Fcgamma receptor in both humans and mice, and is implicated in both antibody production and effector responses to antibody complexes. Reduced function of Fcgr2b has previously been associated with anti-glomerular basement membrane antibody (anti-GBM) disease in mice. However, the mice used had 129 genetic elements flanking the deleted Fcgr2b gene, which are known to increase susceptibility to autoimmunity. In order to confirm a role for Fcgr2b in protection from anti-GBM disease, wild type (WT) mice, mice lacking Fcgr2b on a pure C57BL/6 background, or mice lacking Fcgr2b on a C57BL/6 background with 129 flanking sequences, were immunized with the recombinant NC1 domain of alpha 3 Type IV collagen. Twenty two weeks after immunization, there was a higher incidence of crescentic glomerulonephritis, macrophage infiltration and renal dysfunction in both groups of Fcgr2b-/- mice, indicating an important role of Fcgr2b in regulating the development of anti-GBM disease, on both genetic backgrounds. In order to determine the cellular origin of the Fcgr2b-associated effect, disease was induced in mice with deficiency of Fcgr2b on either B cells alone (CD19Cre), or a subset of myeloid cells (LysozymeMCre). Neither B cell nor myeloid specific knockout mice developed crescentic glomeruonephritis with higher incidence than WT mice indicating that Fcgr2b deficiency on either B cells or a subset of myeloid cells alone is not sufficient to increase susceptibility to anti-GBM disease, but that a combination of cell types, or deficiency of Fcgr2b in a different cell type, is also required.
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Affiliation(s)
- Phoebe E H Sharp
- Division of Immunity and Inflammation, Department of Medicine, Imperial College London, W12 0NN, UK
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Genetic profiling of GSTP1, DPYD, FCGR2A, FCGR3A and CCND1 genes in an Argentinian population. Clin Biochem 2011; 44:1058-1061. [DOI: 10.1016/j.clinbiochem.2011.06.080] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2011] [Revised: 05/11/2011] [Accepted: 06/15/2011] [Indexed: 01/21/2023]
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Hirakawa T, Yamaguchi H, Mitamura Y, Kosaka F, Dan K, Inokuchi K. No racial difference in allele frequencies of FCGR3A gene F158V polymorphisms in diffuse large B-cell lymphoma. Eur J Haematol 2010; 86:180-1. [PMID: 21091537 DOI: 10.1111/j.1600-0609.2010.01554.x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Current world literature. Curr Opin Rheumatol 2010; 23:125-30. [PMID: 21124095 DOI: 10.1097/bor.0b013e3283422cce] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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