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Madaio MP, Czikora I, Kvirkvelia N, McMenamin M, Yue Q, Liu T, Toque HA, Sridhar S, Covington K, Alaisami R, O'Connor PM, Caldwell RW, Chen JK, Clauss M, Brands MW, Eaton DC, Romero MJ, Lucas R. The TNF-derived TIP peptide activates the epithelial sodium channel and ameliorates experimental nephrotoxic serum nephritis. Kidney Int 2019; 95:1359-1372. [PMID: 30905471 DOI: 10.1016/j.kint.2018.12.022] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2018] [Revised: 12/19/2018] [Accepted: 12/20/2018] [Indexed: 02/07/2023]
Abstract
In mice, the initial stage of nephrotoxic serum-induced nephritis (NTN) mimics antibody-mediated human glomerulonephritis. Local immune deposits generate tumor necrosis factor (TNF), which activates pro-inflammatory pathways in glomerular endothelial cells (GECs) and podocytes. Because TNF receptors mediate antibacterial defense, existing anti-TNF therapies can promote infection; however, we have previously demonstrated that different functional domains of TNF may have opposing effects. The TIP peptide mimics the lectin-like domain of TNF, and has been shown to blunt inflammation in acute lung injury without impairing TNF receptor-mediated antibacterial activity. We evaluated the impact of TIP peptide in NTN. Intraperitoneal administration of TIP peptide reduced inflammation, proteinuria, and blood urea nitrogen. The protective effect was blocked by the cyclooxygenase inhibitor indomethacin, indicating involvement of prostaglandins. Targeted glomerular delivery of TIP peptide improved pathology in moderate NTN and reduced mortality in severe NTN, indicating a local protective effect. We show that TIP peptide activates the epithelial sodium channel(ENaC), which is expressed by GEC, upon binding to the channel's α subunit. In vitro, TNF treatment of GEC activated pro-inflammatory pathways and decreased the generation of prostaglandin E2 and nitric oxide, which promote recovery from NTN. TIP peptide counteracted these effects. Despite the capacity of TIP peptide to activate ENaC, it did not increase mean arterial blood pressure in mice. In the later autologous phase of NTN, TIP peptide blunted the infiltration of Th17 cells. By countering the deleterious effects of TNF through direct actions in GEC, TIP peptide could provide a novel strategy to treat glomerular inflammation.
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Affiliation(s)
- Michael P Madaio
- Department of Medicine, Augusta University, Augusta, Georgia, USA.
| | - Istvan Czikora
- Vascular Biology Center, Augusta University, Augusta, Georgia, USA; Department of Physiology, Augusta University, Augusta, Georgia, USA
| | - Nino Kvirkvelia
- Department of Medicine, Augusta University, Augusta, Georgia, USA
| | | | - Qiang Yue
- Department of Medicine, Emory University School of Medicine, Atlanta, Georgia, USA
| | - Ting Liu
- Department of Cellular Biology and Anatomy, Augusta University, Augusta, Georgia, USA
| | - Haroldo A Toque
- Vascular Biology Center, Augusta University, Augusta, Georgia, USA
| | - Supriya Sridhar
- Vascular Biology Center, Augusta University, Augusta, Georgia, USA
| | | | - Rabei Alaisami
- Department of Physiology, Augusta University, Augusta, Georgia, USA
| | - Paul M O'Connor
- Department of Physiology, Augusta University, Augusta, Georgia, USA
| | - Robert W Caldwell
- Department of Pharmacology and Toxicology, Augusta University, Augusta, Georgia, USA
| | - Jian-Kang Chen
- Department of Cellular Biology and Anatomy, Augusta University, Augusta, Georgia, USA
| | - Matthias Clauss
- Indiana Center for Vascular Biology and Medicine, RLR-VA Medical Center, Indianapolis, Indiana, USA
| | - Michael W Brands
- Department of Physiology, Augusta University, Augusta, Georgia, USA
| | - Douglas C Eaton
- Department of Medicine, Emory University School of Medicine, Atlanta, Georgia, USA
| | - Maritza J Romero
- Vascular Biology Center, Augusta University, Augusta, Georgia, USA; Department of Pharmacology and Toxicology, Augusta University, Augusta, Georgia, USA; Department of Anesthesiology and Perioperative Medicine, Medical College of Georgia, Augusta University, Augusta, Georgia, USA
| | - Rudolf Lucas
- Department of Medicine, Augusta University, Augusta, Georgia, USA; Vascular Biology Center, Augusta University, Augusta, Georgia, USA; Department of Pharmacology and Toxicology, Augusta University, Augusta, Georgia, USA.
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Kvirkvelia N, McMenamin M, Warren M, Jadeja RN, Kodeboyina SK, Sharma A, Zhi W, O'Connor PM, Raju R, Lucas R, Madaio MP. Kidney-targeted inhibition of protein kinase C-α ameliorates nephrotoxic nephritis with restoration of mitochondrial dysfunction. Kidney Int 2018; 94:280-291. [PMID: 29731111 DOI: 10.1016/j.kint.2018.01.032] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2017] [Revised: 12/21/2017] [Accepted: 01/18/2018] [Indexed: 01/26/2023]
Abstract
To investigate the role of protein kinase C-α (PKC-α) in glomerulonephritis, the capacity of PKC-α inhibition to reverse the course of established nephrotoxic nephritis (NTN) was evaluated. Nephritis was induced by a single injection of nephrotoxic serum and after its onset, a PKC-α inhibitor was administered either systemically or by targeted glomerular delivery. By day seven, all mice with NTN had severe nephritis, whereas mice that received PKC-α inhibitors in either form had minimal evidence of disease. To further understand the underlying mechanism, label-free shotgun proteomic analysis of the kidney cortexes were performed, using quantitative mass spectrometry. Ingenuity pathway analysis revealed 157 differentially expressed proteins and mitochondrial dysfunction as the most modulated pathway. Functional protein groups most affected by NTN were mitochondrial proteins associated with respiratory processes. These proteins were down-regulated in the mice with NTN, while their expression was restored with PKC-α inhibition. This suggests a role for proteins that regulate oxidative phosphorylation in recovery. In cultured glomerular endothelial cells, nephrotoxic serum caused a decrease in mitochondrial respiration and membrane potential, mitochondrial morphologic changes and an increase in glycolytic lactic acid production; all normalized by PKC-α inhibition. Thus, PKC-α has a critical role in NTN progression, and the results implicate mitochondrial processes through restoring oxidative phosphorylation, as an essential mechanism underlying recovery. Importantly, our study provides additional support for targeted therapy to glomeruli to reverse the course of progressive disease.
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Affiliation(s)
- Nino Kvirkvelia
- Department of Medicine, Augusta University, Augusta, Georgia, USA
| | | | - Marie Warren
- Department of Pharmacology and Toxicology, Augusta University, Augusta, Georgia, USA
| | - Ravirajsinh N Jadeja
- Department of Biochemistry and Molecular Biology, Augusta University, Augusta, Georgia, USA
| | - Sai Karthik Kodeboyina
- Center for Biotechnology and Genomic Medicine, Augusta University, Augusta, Georgia, USA
| | - Ashok Sharma
- Center for Biotechnology and Genomic Medicine, Augusta University, Augusta, Georgia, USA
| | - Wenbo Zhi
- Center for Biotechnology and Genomic Medicine, Augusta University, Augusta, Georgia, USA
| | - Paul M O'Connor
- Department of Physiology and Endocrinology, Augusta University, Augusta, Georgia, USA
| | - Raghavan Raju
- Department of Pharmacology and Toxicology, Augusta University, Augusta, Georgia, USA
| | - Rudolf Lucas
- Vascular Biology Center, Department of Pharmacology and Toxicology, Augusta University, Augusta, Georgia, USA
| | - Michael P Madaio
- Department of Medicine, Augusta University, Augusta, Georgia, USA.
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Li J, Du Y, Qi J, Sneha R, Chang A, Mohan C, Shih WC. Raman spectroscopy as a diagnostic tool for monitoring acute nephritis. JOURNAL OF BIOPHOTONICS 2016; 9:260-269. [PMID: 25996441 DOI: 10.1002/jbio.201500109] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2015] [Revised: 04/15/2015] [Accepted: 04/27/2015] [Indexed: 06/04/2023]
Abstract
Both acute nephritis and chronic nephritis account for substantial morbidity and mortality worldwide, partly due to the lack of reliable tools for detecting disease early and monitoring its progression non-invasively. In this work, Raman spectroscopy coupled with multivariate analysis are employed for the first time to study the accelerated progression of nephritis in anti-GBM mouse model. Preliminary results show up to 98% discriminant accuracy for the severe and midly diseased and the healthy among two strains of mice with different susceptibility to acute glomerulonephritis. This technique has the potential for non-invasive or minimally-invasive early diagnosis, prognosis, and monitoring of renal disease progression.
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Affiliation(s)
- Jingting Li
- Department of Electrical and Computer Engineering, USA
| | - Yong Du
- Department of Biomedical Engineering, USA
| | - Ji Qi
- Department of Electrical and Computer Engineering, USA
| | | | - Anthony Chang
- Department of Pathology, The University of Chicago, USA
| | | | - Wei-Chuan Shih
- Department of Electrical and Computer Engineering, USA.
- Department of Biomedical Engineering, USA.
- Department of Chemistry, University of Houston, 4800, Calhoun, Rd. Houston, TX, 77204, USA.
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Kvirkvelia N, McMenamin M, Gutierrez VI, Lasareishvili B, Madaio MP. Human anti-α3(IV)NC1 antibody drug conjugates target glomeruli to resolve nephritis. Am J Physiol Renal Physiol 2015; 309:F680-4. [PMID: 26290372 DOI: 10.1152/ajprenal.00289.2015] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2015] [Accepted: 08/12/2015] [Indexed: 11/22/2022] Open
Abstract
Current therapies to limit kidney disease progression lack specificity and often have systemic toxicity. To approach this problem, we postulated that a human monoclonal antibody (F1.1), directed against the noncollagenous-1 domain (NC1) of α3(IV) collagen that localizes in glomeruli, could serve as a vehicle for targeted drug delivery. Given enhanced exposure of the NC1 domain of α3(IV) during glomerular diseases, with limited epitope expression in other organs, α3(IV)NC1 provides an ideal target for delivery of disease-modifying agents. As a potential disease-modifying agent, we initially took advantage of recent observations that PGE2 promoted recovery after established injury during the course of nephrotoxic nephritis. To address the general applicability of the approach, the efficacy of glomerular delivery of dexamethasone was also examined. To achieve glomerular targeted therapy, PGE2 and dexamethasone were coupled to F1.1. After confirmation of the composition and activity of the conjugates, both glomerular localization and the capacity of the conjugates to modify disease were evaluated. After injection into mice with established nephritis, resolution of disease was enhanced with both agents, with normalization of histology and improved blood urea nitrogen levels in conjugate-treated mice compared with untreated mice. The results provide a novel means of targeting glomeruli during nephritis, irrespective of cause, by providing efficient drug delivery, with the potential of limiting systemic effects.
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Affiliation(s)
- Nino Kvirkvelia
- Department of Medicine, Georgia Regents University, Augusta, Georgia; and
| | | | | | | | - Michael P Madaio
- Department of Medicine, Georgia Regents University, Augusta, Georgia; and
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Chaudhary K, Shinde R, Liu H, Gnana-Prakasam JP, Veeranan-Karmegam R, Huang L, Ravishankar B, Bradley J, Kvirkvelia N, McMenamin M, Xiao W, Kleven D, Mellor AL, Madaio MP, McGaha TL. Amino acid metabolism inhibits antibody-driven kidney injury by inducing autophagy. THE JOURNAL OF IMMUNOLOGY 2015; 194:5713-24. [PMID: 25980011 DOI: 10.4049/jimmunol.1500277] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2015] [Accepted: 04/17/2015] [Indexed: 11/19/2022]
Abstract
Inflammatory kidney disease is a major clinical problem that can result in end-stage renal failure. In this article, we show that Ab-mediated inflammatory kidney injury and renal disease in a mouse nephrotoxic serum nephritis model was inhibited by amino acid metabolism and a protective autophagic response. The metabolic signal was driven by IFN-γ-mediated induction of indoleamine 2,3-dioxygenase 1 (IDO1) enzyme activity with subsequent activation of a stress response dependent on the eIF2α kinase general control nonderepressible 2 (GCN2). Activation of GCN2 suppressed proinflammatory cytokine production in glomeruli and reduced macrophage recruitment to the kidney during the incipient stage of Ab-induced glomerular inflammation. Further, inhibition of autophagy or genetic ablation of Ido1 or Gcn2 converted Ab-induced, self-limiting nephritis to fatal end-stage renal disease. Conversely, increasing kidney IDO1 activity or treating mice with a GCN2 agonist induced autophagy and protected mice from nephritic kidney damage. Finally, kidney tissue from patients with Ab-driven nephropathy showed increased IDO1 abundance and stress gene expression. Thus, these findings support the hypothesis that the IDO-GCN2 pathway in glomerular stromal cells is a critical negative feedback mechanism that limits inflammatory renal pathologic changes by inducing autophagy.
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Affiliation(s)
- Kapil Chaudhary
- Cancer Immunology, Inflammation, and Tolerance Program, Georgia Regents University Cancer Center, Augusta, GA 30912
| | - Rahul Shinde
- Cancer Immunology, Inflammation, and Tolerance Program, Georgia Regents University Cancer Center, Augusta, GA 30912
| | - Haiyun Liu
- Cancer Immunology, Inflammation, and Tolerance Program, Georgia Regents University Cancer Center, Augusta, GA 30912
| | - Jaya P Gnana-Prakasam
- Signaling and Angiogenesis Program, Georgia Regents University Cancer Center, Augusta, GA 30912
| | | | - Lei Huang
- Cancer Immunology, Inflammation, and Tolerance Program, Georgia Regents University Cancer Center, Augusta, GA 30912; Department of Radiology, Medical College of Georgia, Georgia Regents University, Augusta, GA 30912
| | - Buvana Ravishankar
- Cancer Immunology, Inflammation, and Tolerance Program, Georgia Regents University Cancer Center, Augusta, GA 30912
| | - Jillian Bradley
- Cancer Immunology, Inflammation, and Tolerance Program, Georgia Regents University Cancer Center, Augusta, GA 30912
| | - Nino Kvirkvelia
- Department of Medicine, Medical College of Georgia, Georgia Regents University, Augusta, GA 30912; and
| | - Malgorzata McMenamin
- Department of Medicine, Medical College of Georgia, Georgia Regents University, Augusta, GA 30912; and
| | - Wei Xiao
- Cancer Immunology, Inflammation, and Tolerance Program, Georgia Regents University Cancer Center, Augusta, GA 30912
| | - Daniel Kleven
- Department of Pathology, Medical College of Georgia, Georgia Regents University, Augusta, GA 30912
| | - Andrew L Mellor
- Cancer Immunology, Inflammation, and Tolerance Program, Georgia Regents University Cancer Center, Augusta, GA 30912; Department of Medicine, Medical College of Georgia, Georgia Regents University, Augusta, GA 30912; and
| | - Michael P Madaio
- Department of Medicine, Medical College of Georgia, Georgia Regents University, Augusta, GA 30912; and
| | - Tracy L McGaha
- Cancer Immunology, Inflammation, and Tolerance Program, Georgia Regents University Cancer Center, Augusta, GA 30912; Department of Medicine, Medical College of Georgia, Georgia Regents University, Augusta, GA 30912; and
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Tsuboi N, Kanzaki G, Koike K, Kawamura T, Ogura M, Yokoo T. Clinicopathological assessment of the nephron number. Clin Kidney J 2014; 7:107-14. [PMID: 25852857 PMCID: PMC4377791 DOI: 10.1093/ckj/sfu018] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2014] [Accepted: 02/14/2014] [Indexed: 02/06/2023] Open
Abstract
Recent studies have demonstrated much larger variability in the total number of nephrons in normal populations than previously suspected. In addition, it has been suggested that individuals with a low nephron number may have an increased lifetime risk of hypertension or renal insufficiency, emphasizing the importance of evaluating the nephron number in each individual. In view of the fact that all previous reports of the nephron number were based on analyses of autopsy kidneys, the identification of surrogate markers detectable in living subjects is needed in order to enhance understanding of the clinical significance of this parameter. In this review, we summarize the clinicopathological factors and findings indicating a reduction in the nephron number, focusing particularly on those found at the time of a preserved renal function.
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Affiliation(s)
- Nobuo Tsuboi
- Division of Nephrology and Hypertension, Department of Internal Medicine , The Jikei University School of Medicine , Tokyo , Japan
| | - Go Kanzaki
- Division of Nephrology and Hypertension, Department of Internal Medicine , The Jikei University School of Medicine , Tokyo , Japan
| | - Kentaro Koike
- Division of Nephrology and Hypertension, Department of Internal Medicine , The Jikei University School of Medicine , Tokyo , Japan
| | - Tetsuya Kawamura
- Division of Nephrology and Hypertension, Department of Internal Medicine , The Jikei University School of Medicine , Tokyo , Japan
| | - Makoto Ogura
- Division of Nephrology and Hypertension, Department of Internal Medicine , The Jikei University School of Medicine , Tokyo , Japan
| | - Takashi Yokoo
- Division of Nephrology and Hypertension, Department of Internal Medicine , The Jikei University School of Medicine , Tokyo , Japan
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Baelde H, de Heer E. In vivo imaging of disease-modified glomerular extracellular matrix in renal disease. Kidney Int 2013; 84:238-9. [DOI: 10.1038/ki.2013.123] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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