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Dai B, Liu X, Du M, Xie S, Dou L, Mi X, Zhou D, Su Y, Shen T, Zhang Y, Yue S, Wang D, Tan X. LATS1 inhibitor and zinc supplement synergistically ameliorates contrast-induced acute kidney injury: Induction of Metallothionein-1 and suppression of tubular ferroptosis. Free Radic Biol Med 2024; 223:42-52. [PMID: 39033829 DOI: 10.1016/j.freeradbiomed.2024.07.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/06/2024] [Revised: 07/07/2024] [Accepted: 07/19/2024] [Indexed: 07/23/2024]
Abstract
Contrast-induced acute kidney injury (CI-AKI) is a prevalent cause of renal dysfunction among hospitalized patients, yet the precise pathogenesis and effective therapeutic strategies remain elusive. In this study, we investigated the role of tubular ferroptosis in both experimental CI-AKI models and in primary tubular epithelial cells (PTECs) treated with ioversol. Using whole exome sequencing, we identified metallothioneins (MTs) as being among the most significantly downregulated genes following ioversol exposure. Our findings reveal that overexpression of Mt1 mitigates, whereas suppression of Mt-1 exacerbates, ioversol-induced tubular ferroptosis. Interestingly, the level of MTF1 (metal regulatory transcription factor 1), a principal regulator of Mt1, was found to increase in response to ioversol treatment. We further elucidated that ioversol activates LATS1 (Large tumor suppressor homolog 1), a kinase that promotes the phosphorylation and nuclear translocation of MTF1, thereby inhibiting its transcriptional activity for Mt1. Both genetic and pharmacological inhibition of LATS1 reversed the ioversol-induced suppression of Mt-1. From a therapeutic perspective, the LATS1 inhibitor TDI-011536, in combination with zinc acetate, was administered to a rodent model of CI-AKI. Our data indicate that this combination synergistically upregulates Mt1 expression and provides protection against contrast media-induced tubular ferroptosis. In summary, our study demonstrates that the reduction of Mt-1 contributes to tubular ferroptosis associated with CI-AKI. We show that contrast media activate LATS1, which in turn suppresses the transcriptional activity of MTF1 for Mt1. Herein, the combination of zinc acetate and a LATS1 inhibitor emerges as a potential therapeutic approach for the treatment of CI-AKI.
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Affiliation(s)
- Bo Dai
- Department of Pathology, The School of Medicine, Nankai University, No. 94 Weijin Road, Nankai District, Tianjin, 300071, China; Department of Pathology, Sichuan Provincial People's Hospital, School of Medicine, University of Electronic Science and Technology of China, No. 32, West Second Section, First Ring Road, Qingyang District, Chengdu, Sichuan province, 610072, China
| | - Xuan Liu
- Department of Pathology, The School of Medicine, Nankai University, No. 94 Weijin Road, Nankai District, Tianjin, 300071, China
| | - Mengwei Du
- Department of Pathology, The School of Medicine, Nankai University, No. 94 Weijin Road, Nankai District, Tianjin, 300071, China
| | - Shuangshuang Xie
- Departments of Radiological Image, Tianjin First Central Hospital, No. 24 Fukang Road, Tianjin, 300191, China
| | - Lin Dou
- Departments of Intensive Care Unit, Tianjin First Central Hospital, No. 24 Fukang Road, Tianjin, 300191, China
| | - Xue Mi
- Department of Pathology, The School of Medicine, Nankai University, No. 94 Weijin Road, Nankai District, Tianjin, 300071, China
| | - Donghui Zhou
- Department of Pathology, The School of Medicine, Nankai University, No. 94 Weijin Road, Nankai District, Tianjin, 300071, China
| | - Yu Su
- Department of Pathology, The School of Medicine, Nankai University, No. 94 Weijin Road, Nankai District, Tianjin, 300071, China
| | - Tianyu Shen
- Department of Pathology, The School of Medicine, Nankai University, No. 94 Weijin Road, Nankai District, Tianjin, 300071, China
| | - Yuying Zhang
- Department of Pathology, The School of Medicine, Nankai University, No. 94 Weijin Road, Nankai District, Tianjin, 300071, China
| | - Shijing Yue
- Department of Pathology, The School of Medicine, Nankai University, No. 94 Weijin Road, Nankai District, Tianjin, 300071, China
| | - Dekun Wang
- Department of Pathology, The School of Medicine, Nankai University, No. 94 Weijin Road, Nankai District, Tianjin, 300071, China.
| | - Xiaoyue Tan
- Department of Pathology, The School of Medicine, Nankai University, No. 94 Weijin Road, Nankai District, Tianjin, 300071, China.
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2
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Schaub JA, AlAkwaa FM, McCown PJ, Naik AS, Nair V, Eddy S, Menon R, Otto EA, Demeke D, Hartman J, Fermin D, O’Connor CL, Subramanian L, Bitzer M, Harned R, Ladd P, Pyle L, Pennathur S, Inoki K, Hodgin JB, Brosius FC, Nelson RG, Kretzler M, Bjornstad P. SGLT2 inhibitors mitigate kidney tubular metabolic and mTORC1 perturbations in youth-onset type 2 diabetes. J Clin Invest 2023; 133:e164486. [PMID: 36637914 PMCID: PMC9974101 DOI: 10.1172/jci164486] [Citation(s) in RCA: 32] [Impact Index Per Article: 32.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2022] [Accepted: 12/20/2022] [Indexed: 01/14/2023] Open
Abstract
The molecular mechanisms of sodium-glucose cotransporter-2 (SGLT2) inhibitors (SGLT2i) remain incompletely understood. Single-cell RNA sequencing and morphometric data were collected from research kidney biopsies donated by young persons with type 2 diabetes (T2D), aged 12 to 21 years, and healthy controls (HCs). Participants with T2D were obese and had higher estimated glomerular filtration rates and mesangial and glomerular volumes than HCs. Ten T2D participants had been prescribed SGLT2i (T2Di[+]) and 6 not (T2Di[-]). Transcriptional profiles showed SGLT2 expression exclusively in the proximal tubular (PT) cluster with highest expression in T2Di(-) patients. However, transcriptional alterations with SGLT2i treatment were seen across nephron segments, particularly in the distal nephron. SGLT2i treatment was associated with suppression of transcripts in the glycolysis, gluconeogenesis, and tricarboxylic acid cycle pathways in PT, but had the opposite effect in thick ascending limb. Transcripts in the energy-sensitive mTORC1-signaling pathway returned toward HC levels in all tubular segments in T2Di(+), consistent with a diabetes mouse model treated with SGLT2i. Decreased levels of phosphorylated S6 protein in proximal and distal tubules in T2Di(+) patients confirmed changes in mTORC1 pathway activity. We propose that SGLT2i treatment benefits the kidneys by mitigating diabetes-induced metabolic perturbations via suppression of mTORC1 signaling in kidney tubules.
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Affiliation(s)
| | | | | | | | - Viji Nair
- Department of Internal Medicine, Division of Nephrology
| | - Sean Eddy
- Department of Internal Medicine, Division of Nephrology
| | - Rajasree Menon
- Department of Computational Medicine and Bioinformatics, and
| | - Edgar A. Otto
- Department of Internal Medicine, Division of Nephrology
| | - Dawit Demeke
- Department of Pathology, University of Michigan, Ann Arbor, Michigan, USA
| | - John Hartman
- Department of Internal Medicine, Division of Nephrology
| | - Damian Fermin
- Department of Internal Medicine, Division of Nephrology
| | | | | | - Markus Bitzer
- Department of Internal Medicine, Division of Nephrology
| | | | | | - Laura Pyle
- Department of Biostatistics and Informatics, and
- Department of Pediatrics, Section of Endocrinology, University of Colorado School of Medicine, Aurora, Colorado, USA
| | - Subramaniam Pennathur
- Department of Internal Medicine, Division of Nephrology
- Department of Molecular and Integrative Physiology and
| | - Ken Inoki
- Department of Internal Medicine, Division of Nephrology
- Department of Molecular and Integrative Physiology and
- Life Sciences Institute, University of Michigan, Ann Arbor, Michigan, USA
| | - Jeffrey B. Hodgin
- Department of Pathology, University of Michigan, Ann Arbor, Michigan, USA
| | - Frank C. Brosius
- Department of Internal Medicine, Division of Nephrology
- Division of Nephrology, The University of Arizona College of Medicine Tucson, Tucson, Arizona, USA
| | - Robert G. Nelson
- Chronic Kidney Disease Section, National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK), Phoenix, Arizona, USA
| | - Matthias Kretzler
- Department of Internal Medicine, Division of Nephrology
- Department of Computational Medicine and Bioinformatics, and
| | - Petter Bjornstad
- Department of Pediatrics, Section of Endocrinology, University of Colorado School of Medicine, Aurora, Colorado, USA
- Department of Medicine, Division of Renal Diseases and Hypertension, University of Colorado School of Medicine, Aurora, Colorado, USA
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3
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Urinary Proteome Differences in Patients with Type 2 Diabetes Pre and Post Liraglutide Treatment. Curr Issues Mol Biol 2023; 45:1407-1421. [PMID: 36826037 PMCID: PMC9956006 DOI: 10.3390/cimb45020092] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Revised: 02/01/2023] [Accepted: 02/02/2023] [Indexed: 02/10/2023] Open
Abstract
Diabetes mellitus is a chronic multisystem disease with a high global prevalence. The glucagon-like peptide-1 (GLP-1) receptor agonist liraglutide is known to lower glucose levels and reduce weight. However, the mechanisms underlying the benefits of liraglutide treatment in patients with type 2 diabetes mellitus (T2DM) remain unclear. Twelve male patients with T2DM (pre and post liraglutide treatment) and HbA1c between 8% and 11% were recruited. In the present study, a two-dimensional difference gel electrophoresis (2D-DIGE) matrix-assisted laser desorption/ionization-time of flight (MALDI TOF) mass spectrometric approach combined with bioinformatics and network pathway analysis was used to explore the urine proteomic profile. The mean age of the patients was 52.4 ± 7.5 years. After treatment with liraglutide, a statistically significant change (p < 0.006) was observed in HbA1c with no significant changes in body weight or markers of dyslipidemia. Two-dimensional difference gel electrophoresis identified significant changes (≥1.5-fold change, ANOVA, p ≤ 0.05) in 32 proteins (4 down- and 28 upregulated) in liraglutide post treatment compared to the pre-treatment state. Albumin, serotransferrin, metallothionein-2 (MT-2), and keratins K1 and K10 were found to be upregulated after liraglutide treatment. The patients showed significant improvement in glycemic control after the 12-week treatment with liraglutide. The renoprotective effect of liraglutide may be linked to the increased urinary abundance of MT-2 and the decreased abundance of zinc alpha 2-glycoprotein (ZAG) and Alpha-1 antitrypsin (α1-AT). More studies are needed to elucidate the molecular mechanisms behind the renoprotective effects of liraglutide.
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4
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Ma Y, Yin Z, Dai H, Wu D, Cong J, Huang X, Chen X, Zou L, Ye Z, Huang Z. Increased Metallothionein-1 Associated with Gout Activity and Tophi. Immunol Invest 2023; 52:319-331. [PMID: 36719801 DOI: 10.1080/08820139.2023.2173078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
BACKGROUND AND AIMS Gout is a chronic self-limiting inflammatory arthritis. An increase in metallothionein-1 (MT-1) has been reported in rheumatoid arthritis and osteoarthritis, and it attenuates inflammation and the pathology of diseases. This study aims to detect MT-1 levels in patients with gout and to explore its correlation with disease activity, clinical indexes, and inflammatory cytokines. METHODS The expression of MT-1 messenger RNAs (mRNAs) and protein levels in patients with gout were measured using real-time polymerase chain reaction and enzyme-linked immunosorbent assay. Correlations between MT-1 and clinical indexes or inflammatory mediators were analyzed using Spearman's correlation test. RESULTS Compared with healthy controls (HCs, n = 43), patients with active gout (n = 27) showed higher levels of MT-1 mRNA in peripheral blood mononuclear cells and protein in serum, particularly those with tophi. No significant difference in serum MT-1 levels was observed among patients with inactive gout, HCs, and patients with hyperuricemia without gout. Furthermore, no significant difference was observed between patients with gout with kidney damage and HCs. In addition, serum interleukin (IL)-1β, IL-6, and IL-8 levels were significantly increased in patients with active gout, particularly in those with tophi. The serum MT-1 level was positively correlated with C-reactive protein, as well as with IL-1β, IL-6, and IL-18. CONCLUSION The higher levels of MT-1 were found in patients with gout, which were correlated with disease activity and gout related pro-inflammatory cytokines. Indicating MT-1 may serve as a new marker for predicting disease activity.Abbreviations: IL-1β: Interleukin 1β; MT-1: Metallothionein-1; CRP: C-Reactive Protein; ROS: Reactive Oxygen Species; IL-10: Interleukin 10; TGF-β: Transforming Growth Factor Beta.
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Affiliation(s)
- Yanmei Ma
- Shenzhen Futian Hospital for Rheumatic Diseases, Shenzhen, China.,Biological Therapy Institute, Guangdong Provincial Key Laboratory of Regional Immunity and Diseases, Department of Immunology, Health Science Center, Shenzhen University, Shenzhen, China.,Joint Research Laboratory for Rheumatology of Shenzhen University Health Science Center and Shenzhen Futian Hospital for Rheumatic Diseases, Shenzhen, China
| | - Zhihua Yin
- Shenzhen Futian Hospital for Rheumatic Diseases, Shenzhen, China.,Joint Research Laboratory for Rheumatology of Shenzhen University Health Science Center and Shenzhen Futian Hospital for Rheumatic Diseases, Shenzhen, China
| | - Hanying Dai
- Biological Therapy Institute, Guangdong Provincial Key Laboratory of Regional Immunity and Diseases, Department of Immunology, Health Science Center, Shenzhen University, Shenzhen, China
| | - Dandan Wu
- Biological Therapy Institute, Guangdong Provincial Key Laboratory of Regional Immunity and Diseases, Department of Immunology, Health Science Center, Shenzhen University, Shenzhen, China
| | - Junxiao Cong
- Biological Therapy Institute, Guangdong Provincial Key Laboratory of Regional Immunity and Diseases, Department of Immunology, Health Science Center, Shenzhen University, Shenzhen, China.,Joint Research Laboratory for Rheumatology of Shenzhen University Health Science Center and Shenzhen Futian Hospital for Rheumatic Diseases, Shenzhen, China
| | - Xinmin Huang
- Shenzhen Futian Hospital for Rheumatic Diseases, Shenzhen, China.,Joint Research Laboratory for Rheumatology of Shenzhen University Health Science Center and Shenzhen Futian Hospital for Rheumatic Diseases, Shenzhen, China
| | - Xinpeng Chen
- Shenzhen Futian Hospital for Rheumatic Diseases, Shenzhen, China.,Joint Research Laboratory for Rheumatology of Shenzhen University Health Science Center and Shenzhen Futian Hospital for Rheumatic Diseases, Shenzhen, China
| | - Linghua Zou
- Shenzhen Futian Hospital for Rheumatic Diseases, Shenzhen, China.,Joint Research Laboratory for Rheumatology of Shenzhen University Health Science Center and Shenzhen Futian Hospital for Rheumatic Diseases, Shenzhen, China
| | - Zhizhong Ye
- Shenzhen Futian Hospital for Rheumatic Diseases, Shenzhen, China.,Joint Research Laboratory for Rheumatology of Shenzhen University Health Science Center and Shenzhen Futian Hospital for Rheumatic Diseases, Shenzhen, China
| | - Zhong Huang
- Biological Therapy Institute, Guangdong Provincial Key Laboratory of Regional Immunity and Diseases, Department of Immunology, Health Science Center, Shenzhen University, Shenzhen, China.,Joint Research Laboratory for Rheumatology of Shenzhen University Health Science Center and Shenzhen Futian Hospital for Rheumatic Diseases, Shenzhen, China
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5
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McEvoy CM, Murphy JM, Zhang L, Clotet-Freixas S, Mathews JA, An J, Karimzadeh M, Pouyabahar D, Su S, Zaslaver O, Röst H, Arambewela R, Liu LY, Zhang S, Lawson KA, Finelli A, Wang B, MacParland SA, Bader GD, Konvalinka A, Crome SQ. Single-cell profiling of healthy human kidney reveals features of sex-based transcriptional programs and tissue-specific immunity. Nat Commun 2022; 13:7634. [PMID: 36496458 PMCID: PMC9741629 DOI: 10.1038/s41467-022-35297-z] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Accepted: 11/27/2022] [Indexed: 12/13/2022] Open
Abstract
Knowledge of the transcriptional programs underpinning the functions of human kidney cell populations at homeostasis is limited. We present a single-cell perspective of healthy human kidney from 19 living donors, with equal contribution from males and females, profiling the transcriptome of 27677 cells to map human kidney at high resolution. Sex-based differences in gene expression within proximal tubular cells were observed, specifically, increased anti-oxidant metallothionein genes in females and aerobic metabolism-related genes in males. Functional differences in metabolism were confirmed in proximal tubular cells, with male cells exhibiting higher oxidative phosphorylation and higher levels of energy precursor metabolites. We identified kidney-specific lymphocyte populations with unique transcriptional profiles indicative of kidney-adapted functions. Significant heterogeneity in myeloid cells was observed, with a MRC1+LYVE1+FOLR2+C1QC+ population representing a predominant population in healthy kidney. This study provides a detailed cellular map of healthy human kidney, and explores the complexity of parenchymal and kidney-resident immune cells.
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Affiliation(s)
- Caitriona M McEvoy
- Toronto General Hospital Research Institute, University Health Network, Toronto, ON, Canada
- Ajmera Transplant Centre, University Health Network, Toronto, ON, Canada
- Department of Medicine, Division of Nephrology, University Health Network, Toronto, ON, Canada
| | - Julia M Murphy
- Toronto General Hospital Research Institute, University Health Network, Toronto, ON, Canada
- Ajmera Transplant Centre, University Health Network, Toronto, ON, Canada
- Department of Immunology, University of Toronto, Toronto, ON, Canada
| | - Lin Zhang
- Department of Statistical Sciences, University of Toronto, Toronto, ON, Canada
- Peter Munk Cardiac Centre, University Health Network, Toronto, ON, Canada
| | - Sergi Clotet-Freixas
- Toronto General Hospital Research Institute, University Health Network, Toronto, ON, Canada
- Ajmera Transplant Centre, University Health Network, Toronto, ON, Canada
| | - Jessica A Mathews
- Toronto General Hospital Research Institute, University Health Network, Toronto, ON, Canada
- Ajmera Transplant Centre, University Health Network, Toronto, ON, Canada
| | - James An
- Toronto General Hospital Research Institute, University Health Network, Toronto, ON, Canada
- Ajmera Transplant Centre, University Health Network, Toronto, ON, Canada
- Department of Immunology, University of Toronto, Toronto, ON, Canada
| | - Mehran Karimzadeh
- Peter Munk Cardiac Centre, University Health Network, Toronto, ON, Canada
- Vector Institute, Toronto, ON, Canada
| | - Delaram Pouyabahar
- Department of Molecular Genetics, University of Toronto, Toronto, ON, Canada
- The Donnelly Centre, University of Toronto, Toronto, ON, Canada
| | - Shenghui Su
- Toronto General Hospital Research Institute, University Health Network, Toronto, ON, Canada
- Ajmera Transplant Centre, University Health Network, Toronto, ON, Canada
| | - Olga Zaslaver
- Department of Molecular Genetics, University of Toronto, Toronto, ON, Canada
- The Donnelly Centre, University of Toronto, Toronto, ON, Canada
| | - Hannes Röst
- Department of Molecular Genetics, University of Toronto, Toronto, ON, Canada
- The Donnelly Centre, University of Toronto, Toronto, ON, Canada
| | - Rangi Arambewela
- Toronto General Hospital Research Institute, University Health Network, Toronto, ON, Canada
- Ajmera Transplant Centre, University Health Network, Toronto, ON, Canada
| | - Lewis Y Liu
- Toronto General Hospital Research Institute, University Health Network, Toronto, ON, Canada
- Ajmera Transplant Centre, University Health Network, Toronto, ON, Canada
- Department of Immunology, University of Toronto, Toronto, ON, Canada
| | - Sally Zhang
- Division of Urology, Princess Margaret Cancer Centre, University Health Network, Toronto, ON, Canada
| | - Keith A Lawson
- Division of Urology, Princess Margaret Cancer Centre, University Health Network, Toronto, ON, Canada
| | - Antonio Finelli
- Division of Urology, Princess Margaret Cancer Centre, University Health Network, Toronto, ON, Canada
- Institute of Medical Science, University of Toronto, Toronto, ON, Canada
| | - Bo Wang
- Peter Munk Cardiac Centre, University Health Network, Toronto, ON, Canada
- Vector Institute, Toronto, ON, Canada
- Department of Computer Science, University of Toronto, Toronto, ON, Canada
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON, Canada
| | - Sonya A MacParland
- Toronto General Hospital Research Institute, University Health Network, Toronto, ON, Canada
- Ajmera Transplant Centre, University Health Network, Toronto, ON, Canada
- Department of Immunology, University of Toronto, Toronto, ON, Canada
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON, Canada
| | - Gary D Bader
- Department of Molecular Genetics, University of Toronto, Toronto, ON, Canada
- The Donnelly Centre, University of Toronto, Toronto, ON, Canada
- Department of Computer Science, University of Toronto, Toronto, ON, Canada
- Princess Margaret Cancer Centre, University Health Network, Toronto, ON, Canada
- The Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, ON, Canada
| | - Ana Konvalinka
- Toronto General Hospital Research Institute, University Health Network, Toronto, ON, Canada.
- Ajmera Transplant Centre, University Health Network, Toronto, ON, Canada.
- Department of Medicine, Division of Nephrology, University Health Network, Toronto, ON, Canada.
- Institute of Medical Science, University of Toronto, Toronto, ON, Canada.
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON, Canada.
| | - Sarah Q Crome
- Toronto General Hospital Research Institute, University Health Network, Toronto, ON, Canada.
- Ajmera Transplant Centre, University Health Network, Toronto, ON, Canada.
- Department of Immunology, University of Toronto, Toronto, ON, Canada.
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6
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Metals and Metallothionein Expression in Relation to Progression of Chronic Kidney Disease of Unknown Etiology (CKDu) in Sri Lanka. Diseases 2022; 10:diseases10020034. [PMID: 35735634 PMCID: PMC9221887 DOI: 10.3390/diseases10020034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Revised: 05/29/2022] [Accepted: 05/30/2022] [Indexed: 11/17/2022] Open
Abstract
Chronic kidney disease of unknown etiology was investigated for metal relations in an endemic area by a cross-sectional study with CKD stages G1, G2, G3a, G3b, G4, G5 (ESRD), and endemic and nonendemic controls (EC and NEC) as groups. Subjects with the medical diagnosis were classified into groups by eGFR (SCr, CKD-EPI) and UACR of the study. It determined 24 metals/metalloids in plasma (ICPMS) and metallothionein (MT) mRNA in blood (RT-PCR). MT1A at G3b and MT2A throughout G2−G5 showed increased transcription compared to NEC (ANOVA, p < 0.01). Both MT1A and MT2A remained metal-responsive as associations emerged between MT2A and human MT inducer Cr (in EC: r = 0.54, p < 0.05, n = 14), and between MT1A and MT2A (in EC pooled with G1−G5: r = 0.58, p < 0.001, n = 110). Human MT (hMT)-inducers, namely Zn, Cu, As, Pb, and Ni; Σ hMT-inducers; 14 more non-inducer metals; and Σ MT-binding metals remained higher (p < 0.05) in EC as compared to NEC. Declining eGFR or CKD progression increased the burden of Be, Mg, Al, V, Co, Ni, Rb, Cs, Ba, Mn, Zn, Sr, Σ hMT-inducers, and Σ MT-binding metals in plasma, suggesting an MT role in the disease. MT1A/2A mRNA followed UACR (PCA, Dendrogram: similarity, 57.7%). The study provides evidence that proteinuric chronic renal failure may increase plasma metal levels where blood MT2A could be a marker.
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7
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Nrf2 deficiency aggravates the kidney injury induced by subacute cadmium exposure in mice. Arch Toxicol 2021; 95:883-893. [PMID: 33398418 DOI: 10.1007/s00204-020-02964-3] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Accepted: 11/26/2020] [Indexed: 12/14/2022]
Abstract
Cadmium (Cd) is a heavy metal pollutant that adversely effects the kidney. Oxidative stress and inflammation are likely major mechanisms of Cd-induced kidney injury. Nuclear factor (erythroid-derived 2)-like 2 (Nrf2) is crucial in regulating antioxidant and inflammatory responses. To investigate the role of Nrf2 in the development of subacute Cd-induced renal injury, we utilized Nrf2 knockout (Nrf2-KO) and control mice (Nrf2-WT) which were given cadmium chloride (CdCl2, 1 or 2 mg/kg i.p.) once daily for 7 days. While subacute CdCl2 exposure induced kidney injury in a dose-dependent manner, after the higher Cd dosage exposure, Nrf2-KO mice showed elevated blood urea nitrogen (BUN) and urinary neutrophil gelatinase-associated lipocalin (NGAL) levels compared to control. In line with the findings, the renal tubule injury caused by 2 mg Cd/kg, but not lower dosage, in Nrf2-KO mice determined by Periodic acid-Schiff staining was more serious than that in control mice. Further mechanistic studies showed that Nrf2-KO mice had more apoptotic cells and severe oxidative stress and inflammation in the renal tubules in response to Cd exposures. Although there were no significant differences in Cd contents of tissues between Cd-exposed Nrf2-WT and Nrf2-KO mice, the mRNA expression of Nrf2 downstream genes, including heme oxygenase 1 and metallothionein 1, were significantly less induced by Cd exposures in the kidney of Nrf2-KO compared with Nrf2-WT mice. In conclusion, Nrf2-deficient mice are more sensitive to kidney injury induced by subacute Cd exposure due to a muted antioxidant response, as well as a likely diminished production of specific Cd detoxification metallothioneins.
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8
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Barman S, Srinivasan K. Diabetes and zinc dyshomeostasis: Can zinc supplementation mitigate diabetic complications? Crit Rev Food Sci Nutr 2020; 62:1046-1061. [PMID: 33938330 DOI: 10.1080/10408398.2020.1833178] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Zinc present in the islet cells of the pancreas is crucial for the synthesis, storage, and secretion of insulin. The excretion of large amounts of zinc from the body is reported in diabetic situations. Zinc depletion and increased oxidative stress have a major impact on the pathogenesis of diabetic complications. It would be most relevant to ascertain if intervention with supplemental zinc compensating for its depletion would beneficially mitigate hyperglycemia and the attendant metabolic abnormalities, and secondary complications in diabetes. An exhaustive literature search on this issue indicates: (1) Concurrent hypozincemia and decreased tissue zinc stores in diabetes as a result of its increased urinary excretion and/or decreased intestinal absorption, (2) Several recent experimental studies have documented that supplemental zinc has a potential hypoglycemic effect in the diabetic situation, and also beneficially modulate the attendant metabolic abnormalities and compromised antioxidant status, and (3) Supplemental zinc also alleviates renal lesions, cataract and the risk of cardiovascular disease accompanying diabetes mellitus, and help restore gastrointestinal health in experimental diabetes. These studies have also attempted to identify the precise mechanisms responsible for zinc-mediated beneficial effects in diabetic situation. The evidence discussed in this review highlights that supplemental zinc may significantly contribute to its clinical application in the management of diabetic hyperglycemia and related metabolic abnormalities, and in the alleviation of secondary complications resulting from diabetic oxidative stress.
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Affiliation(s)
- Susmita Barman
- Department of Biochemistry, CSIR - Central Food Technological Research Institute, Mysore, India
| | - Krishnapura Srinivasan
- Department of Biochemistry, CSIR - Central Food Technological Research Institute, Mysore, India
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9
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Carassius auratus as a novel model for the hyperglycemia study. UKRAINIAN BIOCHEMICAL JOURNAL 2019. [DOI: 10.15407/ubj91.04.058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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10
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Zhou M, Gao M, Luo Y, Gui R, Ji H. Long non-coding RNA metallothionein 1 pseudogene 3 promotes p2y12 expression by sponging miR-126 to activate platelet in diabetic animal model. Platelets 2018; 30:452-459. [PMID: 29617185 DOI: 10.1080/09537104.2018.1457781] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Platelet hyperaggregation and hypercoagulation are associated with increase of thrombogenic risk, especially in patients with type 2 diabetes (T2D). High activity of P2Y12 receptor is found in T2D patients, exposing such patients to a prothrombotic condition. P2Y12 is a promising target for antiplatelet, but due to P2Y12 receptor constitutive activation, the clinical practical phenomena such as "clopidogrel resistance" are commonly occurring. In this study, we investigate the role of lncRNA on platelet activation. By lncRNA array, we screened thousands of differentially expressed lncRNA in megakaryocytes from T2D patients and confirmed that lncRNA metallothionein 1 pseudogene 3 (MT1P3) was significantly upregulated in megakaryocytes from T2D patients than in healthy controls. And we further investigate the biofunction of MT1P3 on platelet activation and the regulatory mechanism on p2y12. MT1P3 was positively correlated with p2y12 mRNA levels and promoted p2y12 expression by sponging miR-126. Knockdown of MT1P3 by siRNA reduced p2y12 expression, inhibiting platelet activation and aggregation in diabetes animal model. In conclusion, our findings identify MT1P3 as a key regulator in platelet activation by increasing p2y12 expression through sponging miR-126 under T2D condition. These findings may provide a new insight for managing platelet hyperactivity-related diseases.
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Affiliation(s)
- Ming Zhou
- a Department of Hematology , Hunan Provincial People's Hospital, The first affiliated hospital of Hunan normal University , Hunan Province , China
| | - Meng Gao
- b Department of Transfusion , The Third Xiangya Hospital, Central South University , Changsha , China
| | - Yanwei Luo
- b Department of Transfusion , The Third Xiangya Hospital, Central South University , Changsha , China
| | - Rong Gui
- b Department of Transfusion , The Third Xiangya Hospital, Central South University , Changsha , China
| | - Hongwen Ji
- c Department of Anesthesiology , Transfusion Medicine, Fuwai Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College , Beijing , China
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11
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Sun W, Yang J, Wang W, Hou J, Cheng Y, Fu Y, Xu Z, Cai L. The beneficial effects of Zn on Akt-mediated insulin and cell survival signaling pathways in diabetes. J Trace Elem Med Biol 2018; 46:117-127. [PMID: 29413101 DOI: 10.1016/j.jtemb.2017.12.005] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/01/2017] [Revised: 12/06/2017] [Accepted: 12/21/2017] [Indexed: 12/11/2022]
Abstract
Zinc is one of the essential trace elements and participates in numerous physiological processes. Abnormalities in zinc homeostasis often result in the pathogenesis of various chronic metabolic disorders, such as diabetes and its complications. Zinc has insulin-mimetic and anti-diabetic effects and deficiency has been shown to aggravate diabetes-induced oxidative stress and tissue injury in diabetic rodent models and human subjects with diabetes. Akt signaling pathway plays a central role in insulin-stimulated glucose metabolism and cell survival. Anti-diabetic effects of zinc are largely dependent on the activation of Akt signaling. Zn is also an inducer of metallothionein that plays important role in anti-oxidative stress and damage. However, the exact molecular mechanisms underlying zinc-induced activation of Akt signaling pathway remains to be elucidated. This review summarizes the recent advances in deciphering the possible mechanisms of zinc on Akt-mediated insulin and cell survival signaling pathways in diabetes conditions. Insights into the effects of zinc on epigenetic regulation and autophagy in diabetic nephropathy are also discussed in the latter part of this review.
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Affiliation(s)
- Weixia Sun
- Department of Nephrology, The First Hospital of Jilin University, Changchun, Jilin, 130021, China.
| | - Jiaxing Yang
- Department of Gastrointestinal Surgery, The First Hospital of Jilin University, Changchun, Jilin, 130021, China
| | - Wanning Wang
- Department of Nephrology, The First Hospital of Jilin University, Changchun, Jilin, 130021, China; Pediatric Research Institute, The Departments of Pediatrics, Radiation Oncology, Pharmacology and Toxicology, The University of Louisville, Louisville, KY 40202, USA
| | - Jie Hou
- Department of Nephrology, The First Hospital of Jilin University, Changchun, Jilin, 130021, China
| | - Yanli Cheng
- Department of Nephrology, The First Hospital of Jilin University, Changchun, Jilin, 130021, China
| | - Yaowen Fu
- Department of Nephrology, The First Hospital of Jilin University, Changchun, Jilin, 130021, China
| | - Zhonggao Xu
- Department of Nephrology, The First Hospital of Jilin University, Changchun, Jilin, 130021, China.
| | - Lu Cai
- Pediatric Research Institute, The Departments of Pediatrics, Radiation Oncology, Pharmacology and Toxicology, The University of Louisville, Louisville, KY 40202, USA
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12
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Giacconi R, Cai L, Costarelli L, Cardelli M, Malavolta M, Piacenza F, Provinciali M. Implications of impaired zinc homeostasis in diabetic cardiomyopathy and nephropathy. Biofactors 2017; 43:770-784. [PMID: 28845600 DOI: 10.1002/biof.1386] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/07/2017] [Revised: 07/12/2017] [Accepted: 07/27/2017] [Indexed: 12/18/2022]
Abstract
Impaired zinc homeostasis is observed in diabetes mellitus (DM2) and its complications. Zinc has a specific role in pancreatic β-cells via insulin synthesis, storage, and secretion. Intracellular zinc homeostasis is tightly controlled by zinc transporters (ZnT and Zip families) and metallothioneins (MT) which modulate the uptake, storage, and distribution of zinc. Several investigations in animal models demonstrate the protective role of MT in DM2 and its cardiovascular or renal complications, while a copious literature shows that a common polymorphism (R325W) in ZnT8, which affects the protein's zinc transport activity, is associated with increased DM2 risk. Emerging studies highlight a role of other zinc transporters in β-cell function, suggesting that targeting them could make a possible contribution in managing the hyperglycemia in diabetic patients. This article summarizes the current findings concerning the role of zinc homeostasis in DM2 pathogenesis and development of diabetic cardiomyopathy and nephropathy and suggests novel therapeutic targets. © 2017 BioFactors, 43(6):770-784, 2017.
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Affiliation(s)
- Robertina Giacconi
- Translational Research Center of Nutrition and Ageing, Scientific and Technological Pole, Italian National Institute of Health and Science on Aging (INRCA), Ancona, Italy
| | - Lu Cai
- Pediatric Research Institute at the Department of Pediatrics, Wendy L. Novak Diabetes Care Center, University of Louisville, Louisville, KY, USA
| | - Laura Costarelli
- Translational Research Center of Nutrition and Ageing, Scientific and Technological Pole, Italian National Institute of Health and Science on Aging (INRCA), Ancona, Italy
| | - Maurizio Cardelli
- Advanced Technology Center for Aging Research, Scientific and Technological Pole, Italian National Institute of Health and Science on Aging (INRCA), Ancona, Italy
| | - Marco Malavolta
- Translational Research Center of Nutrition and Ageing, Scientific and Technological Pole, Italian National Institute of Health and Science on Aging (INRCA), Ancona, Italy
| | - Francesco Piacenza
- Translational Research Center of Nutrition and Ageing, Scientific and Technological Pole, Italian National Institute of Health and Science on Aging (INRCA), Ancona, Italy
| | - Mauro Provinciali
- Advanced Technology Center for Aging Research, Scientific and Technological Pole, Italian National Institute of Health and Science on Aging (INRCA), Ancona, Italy
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Chirumbolo S, Bjørklund G. Chrysin and baicalin in diabetic nephropathy. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2017; 51:156-157. [PMID: 28262431 DOI: 10.1016/j.etap.2017.02.019] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2017] [Accepted: 02/20/2017] [Indexed: 06/06/2023]
Affiliation(s)
- Salvatore Chirumbolo
- Department of Neurological and Movement Sciences, University of Verona, Strada Le Grazie 9, 37134 Verona, Italy.
| | - Geir Bjørklund
- Council for Nutritional and Environmental Medicine, Mo i Rana, Norway
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14
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Gu J, Cheng Y, Wu H, Kong L, Wang S, Xu Z, Zhang Z, Tan Y, Keller BB, Zhou H, Wang Y, Xu Z, Cai L. Metallothionein Is Downstream of Nrf2 and Partially Mediates Sulforaphane Prevention of Diabetic Cardiomyopathy. Diabetes 2017; 66:529-542. [PMID: 27903744 PMCID: PMC5248986 DOI: 10.2337/db15-1274] [Citation(s) in RCA: 138] [Impact Index Per Article: 19.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/09/2015] [Accepted: 09/04/2016] [Indexed: 12/22/2022]
Abstract
We have reported that sulforaphane (SFN) prevented diabetic cardiomyopathy in both type 1 and type 2 diabetes (T2DM) animal models via the upregulation of nuclear transcription factor erythroid 2-related factor 2 (Nrf2) and metallothionein (MT). In this study, we tested whether SFN protects the heart from T2DM directly through Nrf2, MT, or both. Using Nrf2-knockout (KO), MT-KO, and wild-type (WT) mice, T2DM was induced by feeding a high-fat diet for 3 months followed by a small dose of streptozotocin. Age-matched controls were given a normal diet. Both T2DM and control mice were then treated with or without SFN for 4 months by continually feeding a high-fat or normal diet. SFN prevented diabetes-induced cardiac dysfunction as well as diabetes-associated cardiac oxidative damage, inflammation, fibrosis, and hypertrophy, with increases in Nrf2 and MT expressions in the WT mice. Both Nrf2-KO and MT-KO diabetic mice exhibited greater cardiac damage than WT diabetic mice. SFN did not provide cardiac protection in Nrf2-KO mice, but partially or completely protected the heart from diabetes in MT-KO mice. SFN did not induce MT expression in Nrf2-KO mice, but stimulated Nrf2 function in MT-KO mice. These results suggest that Nrf2 plays the indispensable role for SFN cardiac protection from T2DM with significant induction of MT and other antioxidants. MT expression induced by SFN is Nrf2 dependent, but is not indispensable for SFN-induced cardiac protection from T2DM.
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Affiliation(s)
- Junlian Gu
- The First Hospital of Jilin University, Changchun, Jilin, China
- Chinese-American Research Institute for Diabetic Complications, Wenzhou Medical University, Wenzhou, Zhejiang, China
- Department of Pediatrics, Pediatric Research Institute, University of Louisville, Louisville, KY
| | - Yanli Cheng
- The First Hospital of Jilin University, Changchun, Jilin, China
- Chinese-American Research Institute for Diabetic Complications, Wenzhou Medical University, Wenzhou, Zhejiang, China
- Department of Pediatrics, Pediatric Research Institute, University of Louisville, Louisville, KY
| | - Hao Wu
- Department of Pediatrics, Pediatric Research Institute, University of Louisville, Louisville, KY
- The Second Hospital of Jilin University, Changchun, Jilin, China
| | - Lili Kong
- The First Hospital of Jilin University, Changchun, Jilin, China
- Department of Pediatrics, Pediatric Research Institute, University of Louisville, Louisville, KY
| | - Shudong Wang
- The First Hospital of Jilin University, Changchun, Jilin, China
- Department of Pediatrics, Pediatric Research Institute, University of Louisville, Louisville, KY
| | - Zheng Xu
- The First Hospital of Jilin University, Changchun, Jilin, China
- Department of Pediatrics, Pediatric Research Institute, University of Louisville, Louisville, KY
| | - Zhiguo Zhang
- The First Hospital of Jilin University, Changchun, Jilin, China
| | - Yi Tan
- Chinese-American Research Institute for Diabetic Complications, Wenzhou Medical University, Wenzhou, Zhejiang, China
- Department of Pediatrics, Pediatric Research Institute, University of Louisville, Louisville, KY
- Department of Pharmacology and Toxicology, University of Louisville, Louisville, KY
| | - Bradley B Keller
- Department of Pediatrics, Pediatric Research Institute, University of Louisville, Louisville, KY
- Kosair Charities Pediatric Heart Research Program, Cardiovascular Innovation Institute, University of Louisville, Louisville, KY
| | - Honglan Zhou
- The First Hospital of Jilin University, Changchun, Jilin, China
| | - Yuehui Wang
- The First Hospital of Jilin University, Changchun, Jilin, China
| | - Zhonggao Xu
- The First Hospital of Jilin University, Changchun, Jilin, China
| | - Lu Cai
- The First Hospital of Jilin University, Changchun, Jilin, China
- Chinese-American Research Institute for Diabetic Complications, Wenzhou Medical University, Wenzhou, Zhejiang, China
- Department of Pediatrics, Pediatric Research Institute, University of Louisville, Louisville, KY
- Department of Pharmacology and Toxicology, University of Louisville, Louisville, KY
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15
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Leierer J, Rudnicki M, Braniff SJ, Perco P, Koppelstaetter C, Mühlberger I, Eder S, Kerschbaum J, Schwarzer C, Schroll A, Weiss G, Schneeberger S, Wagner S, Königsrainer A, Böhmig GA, Mayer G. Metallothioneins and renal ageing. Nephrol Dial Transplant 2016; 31:1444-52. [PMID: 26908771 DOI: 10.1093/ndt/gfv451] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2015] [Accepted: 12/16/2015] [Indexed: 02/01/2023] Open
Abstract
BACKGROUND Human lifespan is increasing continuously and about one-third of the population >70 years of age suffers from chronic kidney disease. The pathophysiology of the loss of renal function with ageing is unclear. METHODS We determined age-associated gene expression changes in zero-hour biopsies of deceased donor kidneys without laboratory signs of impaired renal function, defined as a last serum creatinine >0.96 mg/dL in females and >1.18 mg/dL in males, using microarray technology and the Significance Analysis of Microarrays routine. Expression changes of selected genes were confirmed by quantitative polymerase chain reaction and in situ hybridization and immunohistochemistry for localization of respective mRNA and protein. Functional aspects were examined in vitro. RESULTS Donors were classified into three age groups (<40, 40-59 and >59 years; Groups 1, 2 and 3, respectively). In Group 3 especially, genes encoding for metallothionein (MT) isoforms were more significantly expressed when compared with Group 1; localization studies revealed predominant staining in renal proximal tubular cells. RPTEC/TERT1 cells overexpressing MT2A were less susceptible towards cadmium chloride-induced cytotoxicity and hypoxia-induced apoptosis, both models for increased generation of reactive oxygen species. CONCLUSIONS Increased expression of MTs in the kidney with ageing might be a protective mechanism against increased oxidative stress, which is closely related to the ageing process. Our findings indicate that MTs are functionally involved in the pathophysiology of ageing-related processes.
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Affiliation(s)
- Johannes Leierer
- Department of Internal Medicine IV (Nephrology and Hypertension), Medical University Innsbruck, Anichstrasse 35, 6020 Innsbruck, Austria
| | - Michael Rudnicki
- Department of Internal Medicine IV (Nephrology and Hypertension), Medical University Innsbruck, Anichstrasse 35, 6020 Innsbruck, Austria
| | - Susie-Jane Braniff
- Department of Internal Medicine IV (Nephrology and Hypertension), Medical University Innsbruck, Anichstrasse 35, 6020 Innsbruck, Austria
| | - Paul Perco
- Emergentec Biodevelopment GmbH, Vienna, Austria
| | - Christian Koppelstaetter
- Department of Internal Medicine IV (Nephrology and Hypertension), Medical University Innsbruck, Anichstrasse 35, 6020 Innsbruck, Austria
| | | | - Susanne Eder
- Department of Internal Medicine IV (Nephrology and Hypertension), Medical University Innsbruck, Anichstrasse 35, 6020 Innsbruck, Austria
| | - Julia Kerschbaum
- Department of Internal Medicine IV (Nephrology and Hypertension), Medical University Innsbruck, Anichstrasse 35, 6020 Innsbruck, Austria
| | - Christoph Schwarzer
- Department of Pharmacology, Medical University Innsbruck, Innsbruck, Austria
| | - Andrea Schroll
- Department of Internal Medicine VI, Clinical Immunology and Infectious Diseases, Medical University, Innsbruck, Austria
| | - Günter Weiss
- Department of Internal Medicine VI, Clinical Immunology and Infectious Diseases, Medical University, Innsbruck, Austria
| | - Stefan Schneeberger
- Center of Operative Medicine, Department of Visceral, Transplant and Thoracic Surgery, Medical University Innsbruck, Innsbruck, Austria
| | - Silvia Wagner
- Department of General, Visceral and Transplant Surgery, University of Tübingen, Tübingen, Germany
| | - Alfred Königsrainer
- Department of General, Visceral and Transplant Surgery, University of Tübingen, Tübingen, Germany
| | - Georg A Böhmig
- Division of Nephrology and Dialysis, Department of Internal Medicine III, Medical University Vienna, Vienna, Austria
| | - Gert Mayer
- Department of Internal Medicine IV (Nephrology and Hypertension), Medical University Innsbruck, Anichstrasse 35, 6020 Innsbruck, Austria
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16
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Wu H, Kong L, Cheng Y, Zhang Z, Wang Y, Luo M, Tan Y, Chen X, Miao L, Cai L. Metallothionein plays a prominent role in the prevention of diabetic nephropathy by sulforaphane via up-regulation of Nrf2. Free Radic Biol Med 2015; 89:431-42. [PMID: 26415026 PMCID: PMC4684781 DOI: 10.1016/j.freeradbiomed.2015.08.009] [Citation(s) in RCA: 72] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/27/2015] [Revised: 08/10/2015] [Accepted: 08/20/2015] [Indexed: 12/20/2022]
Abstract
Sulforaphane (SFN) prevents diabetic nephropathy (DN) in type 1 diabetes via up-regulation of nuclear factor (erythroid-derived 2)-like 2 (Nrf2). However, it has not been addressed whether SFN also prevents DN from type 2 diabetes or which Nrf2 downstream gene(s) play(s) the key role in SFN renal protection. Here we investigated whether Nrf2 is required for SFN protection against type 2 diabetes-induced DN and whether metallothionein (MT) is an Nrf2 downstream antioxidant using Nrf2 knockout (Nrf2-null) mice. In addition, MT knockout mice were used to further verify if MT is indispensable for SFN protection against DN. Diabetes-increased albuminuria, renal fibrosis, and inflammation were significantly prevented by SFN, and Nrf2 and MT expression was increased. However, SFN renal protection was completely lost in Nrf2-null diabetic mice, confirming the pivotal role of Nrf2 in SFN protection from type 2 diabetes-induced DN. Moreover, SFN failed to up-regulate MT in the absence of Nrf2, suggesting that MT is an Nrf2 downstream antioxidant. MT deletion resulted in a partial, but significant attenuation of SFN renal protection from type 2 diabetes, demonstrating a partial requirement for MT for SFN renal protection. Therefore, the present study demonstrates for the first time that as an Nrf2 downstream antioxidant, MT plays an important, though partial, role in mediating SFN renal protection from type 2 diabetes.
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Affiliation(s)
- Hao Wu
- Department of Nephrology, the Second Hospital of Jilin University, Changchun, Jilin, China, 130041; Kosair Children's Hospital Research Institute at the Department of Pediatrics, Wendy L. Novak Diabetes Care Center, University of Louisville, Louisville, KY, USA, 40202
| | - Lili Kong
- Department of Nephrology, the Second Hospital of Jilin University, Changchun, Jilin, China, 130041; Kosair Children's Hospital Research Institute at the Department of Pediatrics, Wendy L. Novak Diabetes Care Center, University of Louisville, Louisville, KY, USA, 40202
| | - Yanli Cheng
- Kosair Children's Hospital Research Institute at the Department of Pediatrics, Wendy L. Novak Diabetes Care Center, University of Louisville, Louisville, KY, USA, 40202; The First Hospital of Jilin University, Changchun, Jilin, China, 130021
| | - Zhiguo Zhang
- Kosair Children's Hospital Research Institute at the Department of Pediatrics, Wendy L. Novak Diabetes Care Center, University of Louisville, Louisville, KY, USA, 40202; The First Hospital of Jilin University, Changchun, Jilin, China, 130021
| | - Yangwei Wang
- Department of Nephrology, the Second Hospital of Jilin University, Changchun, Jilin, China, 130041
| | - Manyu Luo
- Department of Nephrology, the Second Hospital of Jilin University, Changchun, Jilin, China, 130041; Kosair Children's Hospital Research Institute at the Department of Pediatrics, Wendy L. Novak Diabetes Care Center, University of Louisville, Louisville, KY, USA, 40202
| | - Yi Tan
- Kosair Children's Hospital Research Institute at the Department of Pediatrics, Wendy L. Novak Diabetes Care Center, University of Louisville, Louisville, KY, USA, 40202; Chinese-American Research Institute for Diabetic Complications, School of Pharmaceutical Science, Wenzhou Medical University, Wenzhou, Zhejiang, China, 325200
| | - Xiangmei Chen
- Department of Nephrology, Chinese PLA General Hospital, Beijing, China, 100853
| | - Lining Miao
- Department of Nephrology, the Second Hospital of Jilin University, Changchun, Jilin, China, 130041.
| | - Lu Cai
- Kosair Children's Hospital Research Institute at the Department of Pediatrics, Wendy L. Novak Diabetes Care Center, University of Louisville, Louisville, KY, USA, 40202; Chinese-American Research Institute for Diabetic Complications, School of Pharmaceutical Science, Wenzhou Medical University, Wenzhou, Zhejiang, China, 325200.
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17
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Gomes IBS, Porto ML, Santos MCLFS, Campagnaro BP, Pereira TMC, Meyrelles SS, Vasquez EC. Renoprotective, anti-oxidative and anti-apoptotic effects of oral low-dose quercetin in the C57BL/6J model of diabetic nephropathy. Lipids Health Dis 2014; 13:184. [PMID: 25481305 PMCID: PMC4271322 DOI: 10.1186/1476-511x-13-184] [Citation(s) in RCA: 64] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2014] [Accepted: 11/29/2014] [Indexed: 12/13/2022] Open
Abstract
Background Diabetic nephropathy (DN) is one of the major causes of end-stage renal disease in diabetic patients. Increasing evidence from studies in the rodents has suggested that this disease is associated with increased oxidative stress due to hyperglycemia. In the present study, we evaluated the renoprotective, anti-oxidative and anti-apoptotic effects of the flavonoid quercetin in C57BL/6J model of DN. Methods DN was induced by streptozotocin (STZ, 100 mg/kg/day, for 3 days) in adult C57BL/6J mice. Six weeks later, mice were divided into the following groups: diabetic mice treated with quercetin (DQ, 10 mg/kg/day, 4 weeks), diabetic mice treated with vehicle (DV) or non-treated non-diabetic (ND) mice. Results Quercetin treatment caused a reduction in polyuria (~45%) and glycemia (~35%), abolished the hypertriglyceridemia and had significant effects on renal function including, decreased proteinuria and high plasma levels of uric acid, urea and creatinine, which were accompanied by beneficial effects on the structural changes of the kidney including glomerulosclerosis. Flow cytometry showed a decrease in oxidative stress and apoptosis in DN mice. Conclusion Taken together, these data show that quercetin effectively attenuated STZ-induced cytotoxicity in renal tissue. This study provides convincing experimental evidence and perspectives on the renoprotective effects of quercetin in diabetic mice and outlines a novel therapeutic strategy for this flavonoid in the treatment of DN.
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Affiliation(s)
| | | | | | | | | | | | - Elisardo C Vasquez
- Department of Physiological Sciences, Laboratory of Translational Physiology, Health Sciences Center, UFES, Vitoria, Brazil.
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Lynes MA, Hidalgo J, Manso Y, Devisscher L, Laukens D, Lawrence DA. Metallothionein and stress combine to affect multiple organ systems. Cell Stress Chaperones 2014; 19:605-11. [PMID: 24584987 PMCID: PMC4147071 DOI: 10.1007/s12192-014-0501-z] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2014] [Revised: 01/23/2014] [Accepted: 01/23/2014] [Indexed: 12/16/2022] Open
Abstract
Metallothioneins (MTs) are a family of low molecular weight, cysteine-rich, metal-binding proteins that have a wide range of functions in cellular homeostasis and immunity. MTs can be induced by a variety of conditions including metals, glucocorticoids, endotoxin, acute phase cytokines, stress, and irradiation. In addition to their important immunomodulatory functions, MTs can protect essential cellular compartments from toxicants, serve as a reservoir of essential heavy metals, and regulate cellular redox potential. Many of the roles of MTs in the neuroinflammation, intestinal inflammation, and stress response have been investigated and were the subject of a session at the 6th International Congress on Stress Proteins in Biology and Medicine in Sheffield, UK. Like the rest of the cell stress response, there are therapeutic opportunities that arise from an understanding of MTs, and these proteins also provide potential insights into the world of the heat shock protein.
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Affiliation(s)
- Michael A Lynes
- Department of Molecular and Cell Biology, University of Connecticut, Storrs, CT, 06269, USA,
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Rochette L, Zeller M, Cottin Y, Vergely C. Diabetes, oxidative stress and therapeutic strategies. Biochim Biophys Acta Gen Subj 2014; 1840:2709-29. [PMID: 24905298 DOI: 10.1016/j.bbagen.2014.05.017] [Citation(s) in RCA: 329] [Impact Index Per Article: 32.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2014] [Revised: 05/12/2014] [Accepted: 05/27/2014] [Indexed: 02/07/2023]
Abstract
BACKGROUND Diabetes has emerged as a major threat to health worldwide. SCOPE OF REVIEW The exact mechanisms underlying the disease are unknown; however, there is growing evidence that excess generation of reactive oxygen species (ROS), largely due to hyperglycemia, causes oxidative stress in a variety of tissues. Oxidative stress results from either an increase in free radical production, or a decrease in endogenous antioxidant defenses, or both. ROS and reactive nitrogen species (RNS) are products of cellular metabolism and are well recognized for their dual role as both deleterious and beneficial species. In type 2 diabetic patients, oxidative stress is closely associated with chronic inflammation. Multiple signaling pathways contribute to the adverse effects of glucotoxicity on cellular functions. There are many endogenous factors (antioxidants, vitamins, antioxidant enzymes, metal ion chelators) that can serve as endogenous modulators of the production and action of ROS. Clinical trials that investigated the effect of antioxidant vitamins on the progression of diabetic complications gave negative or inconclusive results. This lack of efficacy might also result from the fact that they were administered at a time when irreversible alterations in the redox status are already under way. Another strategy to modulate oxidative stress is to exploit the pleiotropic properties of drugs directed primarily at other targets and thus acting as indirect antioxidants. MAJOR CONCLUSIONS It appears important to develop new compounds that target key vascular ROS producing enzymes and mimic endogenous antioxidants. GENERAL SIGNIFICANCE This strategy might prove clinically relevant in preventing the development and/or retarding the progression of diabetes associated with vascular diseases.
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Affiliation(s)
- Luc Rochette
- Laboratoire de Physiopathologie et Pharmacologie Cardio-Métaboliques, INSERM UMR866, Université de Bourgogne, Facultés de Médecine et Pharmacie, 7 Boulevard Jeanne d'Arc, 21079 Dijon, France.
| | - Marianne Zeller
- Laboratoire de Physiopathologie et Pharmacologie Cardio-Métaboliques, INSERM UMR866, Université de Bourgogne, Facultés de Médecine et Pharmacie, 7 Boulevard Jeanne d'Arc, 21079 Dijon, France
| | - Yves Cottin
- Laboratoire de Physiopathologie et Pharmacologie Cardio-Métaboliques, INSERM UMR866, Université de Bourgogne, Facultés de Médecine et Pharmacie, 7 Boulevard Jeanne d'Arc, 21079 Dijon, France
| | - Catherine Vergely
- Laboratoire de Physiopathologie et Pharmacologie Cardio-Métaboliques, INSERM UMR866, Université de Bourgogne, Facultés de Médecine et Pharmacie, 7 Boulevard Jeanne d'Arc, 21079 Dijon, France
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