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Abstract
Current understanding of the mechanisms underlying renal disease in humans is incomplete. Consequently, our ability to prevent the occurrence of renal disease or treat established kidney disease is limited. Investigating kidney disease directly in humans poses objective difficulties, which has led investigators to seek experimental animal models that simulate renal disease in humans. Animal models have thus become a tool of major importance in the study of renal physiology and have been crucial in shedding light on the complex mechanisms involved in kidney function and in our current understanding of the pathophysiology of renal disease. Among animal models, the rat has been the preferred and most commonly used species for the investigation of renal disease. This chapter reviews what has been achieved over the years, using the rat as a tool for the investigation of renal disease in humans, focusing on the contribution of rat genetics and genomics to the elucidation of the mechanisms underlying the pathophysiology of the major types of renal disease, including primary and secondary renal diseases.
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2
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Li Q, Cao Q, Wang C, Nguyen H, Wang XM, Zheng G, Wang YM, Hu S, Alexander SI, Harris DC, Wang Y. Dendritic cell‐targeted CD40 DNA vaccine suppresses Th17 and ameliorates progression of experimental autoimmune glomerulonephritis. J Leukoc Biol 2019; 105:809-819. [PMID: 30811635 DOI: 10.1002/jlb.5a0818-333r] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2018] [Revised: 01/22/2019] [Accepted: 02/07/2019] [Indexed: 01/23/2023] Open
Affiliation(s)
- Qing Li
- Centre for Transplant and Renal Research, Westmead Institute for Medical ResearchThe University of Sydney Sydney New South Wales Australia
- The Central Laboratory of Medical Research Center, The First Affiliated Hospital of USTC, Division of Life Sciences and MedicineUniversity of Science and Technology of China Hefei China
| | - Qi Cao
- Centre for Transplant and Renal Research, Westmead Institute for Medical ResearchThe University of Sydney Sydney New South Wales Australia
- Laboratory of Immunology and Targeted TherapySchool of Laboratory MedicineXinxiang Medical University Xinxiang China
| | - Chengshi Wang
- Centre for Transplant and Renal Research, Westmead Institute for Medical ResearchThe University of Sydney Sydney New South Wales Australia
| | - Hanh Nguyen
- Centre for Transplant and Renal Research, Westmead Institute for Medical ResearchThe University of Sydney Sydney New South Wales Australia
| | - Xin Maggie Wang
- Flow Cytometry Facility, Westmead Institute for Medical ResearchThe University of Sydney Sydney New South Wales Australia
| | - Guoping Zheng
- Centre for Transplant and Renal Research, Westmead Institute for Medical ResearchThe University of Sydney Sydney New South Wales Australia
| | - Yuan Min Wang
- Centre for Kidney Research, Children's Hospital at WestmeadUniversity of Sydney Sydney New South Wales Australia
| | - Shilian Hu
- Anhui Geriatrics Institute, Department of Geriatrics, Anhui Provincial HospitalAnhui Medical University Hefei China
| | - Stephen I. Alexander
- Centre for Kidney Research, Children's Hospital at WestmeadUniversity of Sydney Sydney New South Wales Australia
| | - David C.H. Harris
- Centre for Transplant and Renal Research, Westmead Institute for Medical ResearchThe University of Sydney Sydney New South Wales Australia
| | - Yiping Wang
- Centre for Transplant and Renal Research, Westmead Institute for Medical ResearchThe University of Sydney Sydney New South Wales Australia
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3
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Han Y, Ma FY, Di Paolo J, Nikolic-Paterson DJ. An inhibitor of spleen tyrosine kinase suppresses experimental crescentic glomerulonephritis. Int J Immunopathol Pharmacol 2018; 32:2058738418783404. [PMID: 29923438 PMCID: PMC6024518 DOI: 10.1177/2058738418783404] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Non-selective inhibitors of spleen tyrosine kinase (SYK) efficiently suppress
disease in T cell-dependent models of crescentic glomerulonephritis. However,
the therapeutic potential of selective SYK inhibitors in this disease has not
been established. In addition, we lack knowledge regarding SYK expression in
non-myeloid cells in glomerulonephritis. We addressed these two issues in a rat
model of nephrotoxic serum nephritis (NTN) using a SYK inhibitor, GS-492429.
Disease was induced in Sprague-Dawley rats (Study 1) or Wistar-Kyoto (WKY) rats
(Study 2) by immunization with sheep IgG and administration of sheep anti-rat
nephrotoxic serum. Animals were untreated or received GS-492429 (30 mg/kg/bid)
or vehicle treatment from 2 h before nephrotoxic serum injection until being
killed 3 or 24 h later (Study 1) or 14 days later (Study 2). Two-colour confocal
microscopy found that SYK expression in NTN kidney was restricted to myeloid
cells and platelets, with no evidence of SYK expression by T cells, mesangial
cells, podocytes or tubular epithelial cells. In Study 1, GS-492429 treatment
significantly reduced glomerular neutrophil and macrophage infiltration, with
protection from glomerular thrombosis and proteinuria. In Study 2, GS-492429
treatment reduced glomerular crescent formation by 70% on day 14 NTN in
conjunction with reduced glomerular thrombosis, glomerulosclerosis and tubular
damage. This was accompanied by a marked reduction in markers of inflammation
(CCL2, TNF-α, NOS2, MMP-12). Importantly, the protective effects of GS-492429
were independent of T cell infiltration and activation and independent of
JAK/STAT3 signalling. In conclusion, this study demonstrates that a SYK
inhibitor can suppress the development of crescentic glomerulonephritis through
effects upon myeloid cells and platelets.
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Affiliation(s)
- Yingjie Han
- 1 Department of Nephrology, Monash Medical Centre, Clayton, VIC, Australia.,2 Monash University Centre for Inflammatory Diseases, Monash Medical Centre, Clayton, VIC, Australia
| | - Frank Y Ma
- 1 Department of Nephrology, Monash Medical Centre, Clayton, VIC, Australia.,2 Monash University Centre for Inflammatory Diseases, Monash Medical Centre, Clayton, VIC, Australia
| | | | - David J Nikolic-Paterson
- 1 Department of Nephrology, Monash Medical Centre, Clayton, VIC, Australia.,2 Monash University Centre for Inflammatory Diseases, Monash Medical Centre, Clayton, VIC, Australia
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4
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Amos LA, Ma FY, Tesch GH, Liles JT, Breckenridge DG, Nikolic-Paterson DJ, Han Y. ASK1 inhibitor treatment suppresses p38/JNK signalling with reduced kidney inflammation and fibrosis in rat crescentic glomerulonephritis. J Cell Mol Med 2018; 22:4522-4533. [PMID: 29998485 PMCID: PMC6111820 DOI: 10.1111/jcmm.13705] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2018] [Accepted: 04/29/2018] [Indexed: 12/15/2022] Open
Abstract
Activation of p38 mitogen‐activated protein kinase (MAPK) and c‐Jun amino terminal kinase (JNK) is prominent in human crescentic glomerulonephritis. p38 and JNK inhibitors suppress crescentic disease in animal models; however, the upstream mechanisms inducing activation of these kinases in crescentic glomerulonephritis are unknown. We investigated the hypothesis that apoptosis signal‐regulating kinase 1 (ASK1/MAP3K5) promote p38/JNK activation and renal injury in models of nephrotoxic serum nephritis (NTN); acute glomerular injury in SD rats, and crescentic disease in WKY rats. Treatment with the selective ASK1 inhibitor, GS‐444217 or vehicle began 1 hour before nephrotoxic serum injection and continued until animals were killed on day 1 (SD rats) or 14 (WKY rats). NTN resulted in phosphorylation (activation) of p38 and c‐Jun in both models which was substantially reduced by ASK1 inhibitor treatment. In SD rats, GS‐444217 prevented proteinuria and glomerular thrombosis with suppression of macrophage activation on day 1 NTN. In WKY rats, GS‐444217 reduced crescent formation, prevented renal impairment and reduced proteinuria on day 14 NTN. Macrophage activation, T‐cell infiltration and renal fibrosis were also reduced by GS‐444217. In conclusion, GS‐444217 treatment inhibited p38/JNK activation and development of renal injury in rat NTN. ASK1 inhibitors may have therapeutic potential in rapidly progressive glomerulonephritis.
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Affiliation(s)
- Liv A Amos
- Department of Nephrology, Monash Medical Centre, Clayton, Vic., 3168, Australia.,Monash University Centre for Inflammatory Diseases, Monash Medical Centre, Clayton, Vic., 3168, Australia
| | - Frank Y Ma
- Department of Nephrology, Monash Medical Centre, Clayton, Vic., 3168, Australia.,Monash University Centre for Inflammatory Diseases, Monash Medical Centre, Clayton, Vic., 3168, Australia
| | - Greg H Tesch
- Department of Nephrology, Monash Medical Centre, Clayton, Vic., 3168, Australia.,Monash University Centre for Inflammatory Diseases, Monash Medical Centre, Clayton, Vic., 3168, Australia
| | | | | | - David J Nikolic-Paterson
- Department of Nephrology, Monash Medical Centre, Clayton, Vic., 3168, Australia.,Monash University Centre for Inflammatory Diseases, Monash Medical Centre, Clayton, Vic., 3168, Australia
| | - Yingjie Han
- Department of Nephrology, Monash Medical Centre, Clayton, Vic., 3168, Australia.,Monash University Centre for Inflammatory Diseases, Monash Medical Centre, Clayton, Vic., 3168, Australia
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5
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Identification of Ceruloplasmin as a Gene that Affects Susceptibility to Glomerulonephritis Through Macrophage Function. Genetics 2017; 206:1139-1151. [PMID: 28450461 PMCID: PMC5499168 DOI: 10.1534/genetics.116.197376] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2016] [Accepted: 04/05/2017] [Indexed: 12/31/2022] Open
Abstract
Crescentic glomerulonephritis (Crgn) is a complex disorder where macrophage activity and infiltration are significant effector causes. In previous linkage studies using the uniquely susceptible Wistar Kyoto (WKY) rat strain, we have identified multiple crescentic glomerulonephritis QTL (Crgn) and positionally cloned genes underlying Crgn1 and Crgn2, which accounted for 40% of total variance in glomerular inflammation. Here, we have generated a backcross (BC) population (n = 166) where Crgn1 and Crgn2 were genetically fixed and found significant linkage to glomerular crescents on chromosome 2 (Crgn8, LOD = 3.8). Fine mapping analysis by integration with genome-wide expression QTLs (eQTLs) from the same BC population identified ceruloplasmin (Cp) as a positional eQTL in macrophages but not in serum. Liquid chromatography-tandem mass spectrometry confirmed Cp as a protein QTL in rat macrophages. WKY macrophages overexpress Cp and its downregulation by RNA interference decreases markers of glomerular proinflammatory macrophage activation. Similarly, short incubation with Cp results in a strain-dependent macrophage polarization in the rat. These results suggest that genetically determined Cp levels can alter susceptibility to Crgn through macrophage function and propose a new role for Cp in early macrophage activation.
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6
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Reynolds J, Preston GA, Pressler BM, Hewins P, Brown M, Roth A, Alderman E, Bunch D, Jennette JC, Cook HT, Falk RJ, Pusey CD. Autoimmunity to the alpha 3 chain of type IV collagen in glomerulonephritis is triggered by 'autoantigen complementarity'. J Autoimmun 2015; 59:8-18. [PMID: 25841937 DOI: 10.1016/j.jaut.2015.01.003] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2014] [Revised: 12/30/2014] [Accepted: 01/05/2015] [Indexed: 01/06/2023]
Abstract
'Autoantigen complementarity' is a theory proposing that the initiator of an autoimmune response is not necessarily the autoantigen or its molecular mimic, but may instead be a peptide that is 'antisense/complementary' to the autoantigen. We investigated whether such complementary proteins play a role in the immunopathogenesis of autoimmune glomerulonephritis. Experimental autoimmune glomerulonephritis, a model of anti-glomerular basement membrane (GBM) disease, can be induced in Wistar Kyoto (WKY) rats by immunization with the α3 chain of type IV collagen. In this study, WKY rats were immunized with a complementary α3 peptide (c-α3-Gly) comprised of amino acids that 'complement' the well characterized epitope on α3(IV)NC1, pCol(24-38). Within 8 weeks post-immunization, these animals developed cresentic glomerulonephritis, similar to pCol(24-38)-immunized rats, while animals immunized with scrambled peptide were normal. Anti-idiotypic antibodies to epitopes from c-α3-Gly-immunized animals were shown to be specific for α3 protein, binding in a region containing sense pCol(24-38) sequence. Interestingly, anti-complementary α3 antibodies were identified in sera from patients with anti-GBM disease, suggesting a role for 'autoantigen complementarity' in immunopathogenesis of the human disease. This work supports the idea that autoimmune glomerulonephritis can be initiated through an immune response against a peptide that is anti-sense or complementary to the autoantigen. The implications of this discovery may be far reaching, and other autoimmune diseases could be due to responses to these once unsuspected 'complementary' antigens.
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Affiliation(s)
- John Reynolds
- Renal Section, Department of Medicine, Imperial College London, Hammersmith Campus, London, UK; Institute of Biomedical and Environmental Science and Technology, Department of Life Sciences, University of Bedfordshire, Luton, UK.
| | - Gloria A Preston
- UNC Kidney Center, Department of Medicine, Division of Nephrology and Hypertension, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Barrak M Pressler
- Department of Pathology and Laboratory Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Peter Hewins
- UNC Kidney Center, Department of Medicine, Division of Nephrology and Hypertension, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Michael Brown
- UNC Kidney Center, Department of Medicine, Division of Nephrology and Hypertension, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Aleeza Roth
- UNC Kidney Center, Department of Medicine, Division of Nephrology and Hypertension, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Elizabeth Alderman
- UNC Kidney Center, Department of Medicine, Division of Nephrology and Hypertension, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Donna Bunch
- UNC Kidney Center, Department of Medicine, Division of Nephrology and Hypertension, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - J Charles Jennette
- UNC Kidney Center, Department of Medicine, Division of Nephrology and Hypertension, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - H Terence Cook
- Renal Section, Department of Medicine, Imperial College London, Hammersmith Campus, London, UK
| | - Ronald J Falk
- UNC Kidney Center, Department of Medicine, Division of Nephrology and Hypertension, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Charles D Pusey
- Renal Section, Department of Medicine, Imperial College London, Hammersmith Campus, London, UK
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7
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Hopfer H, Hünemörder S, Treder J, Turner JE, Paust HJ, Meyer-Schwesinger C, Hopfer U, Sachs M, Peters A, Bucher-Kocaoglu B, Ahrens S, Panzer U, Mittrücker HW. Glomerulopathy induced by immunization with a peptide derived from the goodpasture antigen α3IV-NC1. THE JOURNAL OF IMMUNOLOGY 2015; 194:3646-55. [PMID: 25769923 DOI: 10.4049/jimmunol.1401267] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2014] [Accepted: 02/13/2015] [Indexed: 01/08/2023]
Abstract
Mouse experimental autoimmune glomerulonephritis, a model of human antiglomerular basement membrane disease, depends on both Ab and T cell responses to the Goodpasture Ag noncollagenous domain 1 of the α3-chain of type IV collagen (α3IV-NC1). The aim of our study was to further characterize the T cell-mediated immune response. Repeated immunization with mouse α3IV-NC1 caused fatal glomerulonephritis in DBA/1 mice. Although two immunizations were sufficient to generate high α3IV-NC1-specific IgG titers, Ab and complement deposition along the glomerular basement membranes, and a nephrotic syndrome, two additional immunizations were needed to induce a necrotizing/crescentic glomerulonephritis. Ten days after the first immunization, α3IV-NC1-specific CD4(+) cells producing TNF-α, IFN-γ, or IL-17A were detected in the spleen. With the emergence of necrotizing/crescentic glomerulonephritis, ∼0.15% of renal CD4(+) cells were specific for α3IV-NC1. Using peptides spanning the whole α3IV-NC1 domain, three immunodominant T cell epitopes were identified. Immunization with these peptides did not lead to clinical signs of experimental autoimmune glomerulonephritis or necrotizing/crescentic glomerulonephritis. However, mice immunized with one of the peptides (STVKAGDLEKIISRC) developed circulating Abs against mouse α3IV-NC1 first detected at 8 wk, and 50% of the mice showed mild proteinuria at 18-24 wk due to membranous glomerulopathy. Taken together, our results suggest that autoreactive T cells are able to induce the formation of pathologic autoantibodies. The quality and quantity of α3IV-NC1-specific Ab and T cell responses are critical for the phenotype of the glomerulonephritis.
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Affiliation(s)
- Helmut Hopfer
- Institute of Pathology, University Hospital Basel, 4031 Basel, Switzerland; Institute of Pathology, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany;
| | - Stefanie Hünemörder
- Institute of Immunology, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany; and
| | - Julia Treder
- Institute of Immunology, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany; and
| | - Jan-Eric Turner
- Department of Medicine, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany
| | - Hans-Joachim Paust
- Department of Medicine, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany
| | | | - Ulrike Hopfer
- Department of Medicine, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany
| | - Marlies Sachs
- Institute of Pathology, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany; Department of Medicine, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany
| | - Anett Peters
- Department of Medicine, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany
| | | | - Stefanie Ahrens
- Institute of Immunology, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany; and
| | - Ulf Panzer
- Department of Medicine, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany
| | - Hans-Willi Mittrücker
- Institute of Immunology, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany; and
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8
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Zhou C, Lou K, Tatum K, Funk J, Wu J, Bartkowiak T, Kagan D, Lou Y. Differentiating Glomerular Inflammation from Fibrosis in a Bone Marrow Chimera for Rat Anti-Glomerular Basement Membrane Glomerulonephritis. Am J Nephrol 2015; 42:42-53. [PMID: 26337665 PMCID: PMC4651783 DOI: 10.1159/000438929] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2015] [Accepted: 07/20/2015] [Indexed: 12/13/2022]
Abstract
BACKGROUND Many types of glomerulonephritis (GN) undergo tandem connected phases: inflammation and fibrosis. Fibrosis in human GNs leads to irreversible end-stage disease. This study investigated how these 2 phases were controlled. METHODS Using a rat anti-glomerular basement membrane GN model, we established bone marrow (BM) chimeras between GN-resistant Lewis (LEW) and GN-susceptible Wistar Kyoto (WKY) rats. Glomerular inflammation and fibrosis were compared between chimeras. RESULTS LEW's BM to WKY chimeras with or without co-transfer of host WKY's T cells were GN-resistant. On the other hand, WKY's BM to LEW (LEW(WKY)) chimeras developed glomerular inflammation and albuminuria upon immunization. Quantitative analysis showed that the number and composition of inflammatory cells in glomeruli of immunized LEW(WKY) chimeras were similar to those in immunized WKY rats at their inflammatory peak. Thus, glomerular inflammation was controlled by BM-derived non-T cell populations. However, unlike WKY rats, LEW(WKY) rats did not develop fibrosis until the end of experiments (84 days) in spite of persistent inflammation and albuminuria. CONCLUSION Inflammation alone was not sufficient to trigger fibrosis, suggesting a critical role of glomerular cells in the fibrotic process. As LEW(WKY) chimera allows us to separate glomerular inflammation from fibrosis, this model provides a useful tool to study how fibrosis is initiated following inflammation.
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Affiliation(s)
- Cindy Zhou
- Department of Diagnostic Sciences, University of Texas Health Science Center at Houston, Houston, TX 77054
| | - Kristie Lou
- Department of Biochemistry and Cell Biology, Rice University, Houston, TX 77030
| | - Kiana Tatum
- Department of Diagnostic Sciences, University of Texas Health Science Center at Houston, Houston, TX 77054
| | - Jeremiah Funk
- Department of Diagnostic Sciences, University of Texas Health Science Center at Houston, Houston, TX 77054
| | - Jean Wu
- Department of Diagnostic Sciences, University of Texas Health Science Center at Houston, Houston, TX 77054
| | - Todd Bartkowiak
- Department of Diagnostic Sciences, University of Texas Health Science Center at Houston, Houston, TX 77054
| | - David Kagan
- Department of Internal Medicine, University of Texas Health Science Center at Houston, Houston, TX 77030
| | - Yahuan Lou
- Department of Diagnostic Sciences, University of Texas Health Science Center at Houston, Houston, TX 77054
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9
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Ooi JD, Gan PY, Odobasic D, Holdsworth SR, Kitching AR. T cell mediated autoimmune glomerular disease in mice. ACTA ACUST UNITED AC 2014; 107:15.27.1-15.27.19. [PMID: 25367126 DOI: 10.1002/0471142735.im1527s107] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Many forms of glomerulonephritis are mediated by autoimmunity. While autoantibodies are often pathogenic, cell-mediated immunity plays an important role in a number of forms of rapidly progressive glomerulonephritis. This unit describes the induction of cell-mediated autoimmune glomerular disease in mice. One disease model, experimental anti-glomerular basement membrane (GBM) disease, features autoreactivity to a well-defined component of type IV collagen found in the GBM, α3(IV)NC1. The other models the cell-mediated effector response in forms of renal vasculitis, where autoantibodies to myeloperoxidase result in systemic neutrophil activation, resulting in their localization to the glomerulus and the subsequent deposition of myeloperoxidase within glomerular capillaries. There, myeloperoxidase acts as a "planted" autoantigen and is recognized by effector autoreactive myeloperoxidase-specific T cells. These models are useful both in defining mechanisms germane to the development of autoimmunity to α3(IV)NC1 and myeloperoxidase, and in dissecting the role of cell-mediated responses in effecting glomerular injury.
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Affiliation(s)
- Joshua D Ooi
- Centre for Inflammatory Diseases, Monash University Department of Medicine, Clayton, Australia
| | - Poh-Yi Gan
- Centre for Inflammatory Diseases, Monash University Department of Medicine, Clayton, Australia
| | - Dragana Odobasic
- Centre for Inflammatory Diseases, Monash University Department of Medicine, Clayton, Australia
| | - Stephen R Holdsworth
- Centre for Inflammatory Diseases, Monash University Department of Medicine, Clayton, Australia.,Department of Nephrology, Monash Health, Clayton, Australia
| | - A Richard Kitching
- Centre for Inflammatory Diseases, Monash University Department of Medicine, Clayton, Australia.,Department of Nephrology, Monash Health, Clayton, Australia.,Department of Paediatric Nephrology, Monash Health, Clayton, Australia
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10
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D'Souza Z, McAdoo SP, Smith J, Pusey CD, Cook HT, Behmoaras J, Aitman TJ. Experimental crescentic glomerulonephritis: a new bicongenic rat model. Dis Model Mech 2013; 6:1477-86. [PMID: 24046355 PMCID: PMC3820270 DOI: 10.1242/dmm.012328] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Crescentic glomerulonephritis (CRGN) is a major cause of human kidney failure, but the underlying mechanisms are not fully understood. Wistar Kyoto (WKY) rats are uniquely susceptible to CRGN following injection of nephrotoxic serum, whereas Lewis (LEW) rats are resistant. Our previous genetic studies of nephrotoxic nephritis (NTN), a form of CRGN induced by nephrotoxic serum, identified Fcgr3 and Jund as WKY genes underlying the two strongest quantitative trait loci for NTN phenotypes: Crgn1 and Crgn2, respectively. We also showed that introgression of WKY Crgn1 or Crgn2 individually into a LEW background did not lead to the formation of glomerular crescents. We have now generated a bicongenic strain, LEW.WCrgn1,2, in which WKY Crgn1 and Crgn2 are both introgressed into the LEW genetic background. These rats show development of NTN phenotypes, including glomerular crescents. Furthermore, we characterised macrophage function and glomerular cytokine profiles in this new strain. Additionally, we show that LEW.WCrgn1,2 rats are resistant to the development of glomerular crescents that is usually induced following immunisation with recombinant rat α3(IV)NC1, the specific Goodpasture autoantigen located in the glomerular basement membrane against which the immune response is directed in experimental autoimmune glomerulonephritis. Our results show that the new bicongenic strain responds differently to two distinct experimental triggers of CRGN. This is the first time that CRGN has been induced on a normally resistant rat genetic background and identifies the LEW.WCrgn1,2 strain as a new, potentially valuable model of macrophage-dependent glomerulonephritis.
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Affiliation(s)
- Zelpha D'Souza
- MRC Clinical Sciences Centre, Imperial College London, Hammersmith Hospital, Du Cane Road, London, W12 0NN, UK
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11
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Ooi JD, Chang J, O'Sullivan KM, Pedchenko V, Hudson BG, Vandenbark AA, Fugger L, Holdsworth SR, Kitching AR. The HLA-DRB1*15:01-restricted Goodpasture's T cell epitope induces GN. J Am Soc Nephrol 2013; 24:419-31. [PMID: 23411782 DOI: 10.1681/asn.2012070705] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
Human anti-glomerular basement membrane (GBM) disease strongly associates with HLA-DRB1*15:01. The target autoantigen in this disease is the noncollagenous domain of the α3 chain of type IV collagen, α3(IV)NC1, but critical early T cell epitopes presented by this human MHC class II molecule are unknown. Here, by immunizing HLA-DRB1*15:01 transgenic mice with whole recombinant α3(IV)NC1 and with overlapping α3(IV)NC1 peptides, we defined a HLA-DRB1*15:01-restricted α3(IV)NC1 T cell epitope (α3136-146) with four critical residues. This peptide was not immunogenic in HLA-DRB1*01:01 transgenic or C57BL/6 mice. The T cell epitope is naturally processed from α3(IV)NC1. CD4(+) T cell clones, generated from HLA-DRB1*15:01 transgenic mice and specific for α3136-146, transferred disease into naive HLA-DRB1*15:01 transgenic mice, evidenced by the development of necrotizing crescentic GN, albuminuria, renal impairment, and accumulation of CD4(+) T cells and macrophages in glomeruli. Because Fcγ receptors are implicated in disease susceptibility, we crossed HLA transgenic mice onto an FcγRIIb-deficient background. Immunization with either α3136-146 or α3(IV)NC1 induced GN in HLA-DRB1*15:01 transgenic FcγRIIb-deficient mice, but HLA-DRB1*01:01 transgenic FcγRIIb-deficient mice were unaffected. Taken together, these results demonstrate that the HLA-DRB1*15:01-restricted T cell epitope α3136-146 can induce T cell responses and injury in anti-GBM GN.
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Affiliation(s)
- Joshua D Ooi
- Centre for Inflammatory Diseases, Monash University Department of Medicine, Monash Medical Centre, 246 Clayton Road, Clayton, VIC 3168, Australia
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12
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Xiao H, Ciavatta D, Aylor DL, Hu P, de Villena FPM, Falk RJ, Jennette JC. Genetically determined severity of anti-myeloperoxidase glomerulonephritis. THE AMERICAN JOURNAL OF PATHOLOGY 2013; 182:1219-26. [PMID: 23384999 DOI: 10.1016/j.ajpath.2012.12.006] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/15/2012] [Revised: 12/01/2012] [Accepted: 12/21/2012] [Indexed: 10/27/2022]
Abstract
Myeloperoxidase (MPO) is a target antigen for antineutrophil cytoplasmic autoantibodies (ANCA). There is evidence that MPO-ANCA cause necrotizing and crescentic glomerulonephritis (NCGN) and vasculitis. NCGN severity varies among patients with ANCA disease, and genetic factors influence disease severity. The role of genetics in MPO-ANCA NCGN severity was investigated using 13 inbred mouse strains, F1 and F2 hybrids, bone marrow chimeras, and neutrophil function assays. Mouse strains include founders of the Collaborative Cross. Intravenous injection of anti-MPO IgG induced glomerular crescents in >60% of glomeruli in 129S6/SvEv and CAST/EiJ mice, but <1% in A/J, DBA/1J, DBA/2J, NOD/LtJ, and PWK/PhJ mice. C57BL6J, 129S1/SvImJ, LP/J, WSB/EiJ, NZO/HILtJ, and C3H mice had intermediate severity. High-density genotypes at 542,190 single nucleotide polymorphisms were used to identify candidate loci for disease severity by identifying genomic regions that are different between 129S6/SvEv and 129S1/SvImJ mice, which are genetically similar but phenotypically distinct. C57BL/6 × 129S6 F2 mice were genotyped at 76 SNPs to capture quantitative trait loci for disease severity. The absence of a dominant quantitative trait locus suggests that differences in severity are the result of multiple gene interactions. In vivo studies using bone marrow chimeric mice and in vitro studies of neutrophil activation by anti-MPO IgG indicated that severity of NCGN is mediated by genetically determined differences in the function of neutrophils.
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Affiliation(s)
- Hong Xiao
- Department of Pathology and Laboratory Medicine, University of North Carolina, Chapel Hill, Chapel Hill, North Carolina 27599, USA
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