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Apolipoprotein A-II, a Player in Multiple Processes and Diseases. Biomedicines 2022; 10:biomedicines10071578. [PMID: 35884883 PMCID: PMC9313276 DOI: 10.3390/biomedicines10071578] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2022] [Revised: 06/21/2022] [Accepted: 06/28/2022] [Indexed: 11/26/2022] Open
Abstract
Apolipoprotein A-II (apoA-II) is the second most abundant apolipoprotein in high-density lipoprotein (HDL) particles, playing an important role in lipid metabolism. Human and murine apoA-II proteins have dissimilar properties, partially because human apoA-II is dimeric whereas the murine homolog is a monomer, suggesting that the role of apoA-II may be quite different in humans and mice. As a component of HDL, apoA-II influences lipid metabolism, being directly or indirectly involved in vascular diseases. Clinical and epidemiological studies resulted in conflicting findings regarding the proatherogenic or atheroprotective role of apoA-II. Human apoA-II deficiency has little influence on lipoprotein levels with no obvious clinical consequences, while murine apoA-II deficiency causes HDL deficit in mice. In humans, an increased plasma apoA-II concentration causes hypertriglyceridemia and lowers HDL levels. This dyslipidemia leads to glucose intolerance, and the ensuing high blood glucose enhances apoA-II transcription, generating a vicious circle that may cause type 2 diabetes (T2D). ApoA-II is also used as a biomarker in various diseases, such as pancreatic cancer. Herein, we provide a review of the most recent findings regarding the roles of apoA-II and its functions in various physiological processes and disease states, such as cardiovascular disease, cancer, amyloidosis, hepatitis, insulin resistance, obesity, and T2D.
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Cui X, Sawashita J, Dai J, Liu C, Igarashi Y, Mori M, Miyahara H, Higuchi K. Exercise suppresses mouse systemic AApoAII amyloidosis through enhancement of the p38 MAPK signaling pathway. Dis Model Mech 2022; 15:274173. [PMID: 35099007 PMCID: PMC8961676 DOI: 10.1242/dmm.049327] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2021] [Accepted: 01/18/2022] [Indexed: 11/20/2022] Open
Abstract
Exercise interventions are beneficial for reducing the risk of age-related diseases, including amyloidosis, but the underlying molecular links remain unclear. Here, we investigated the protective role of interval exercise training in a mouse model of age-related systemic apolipoprotein A-II amyloidosis (AApoAII) and identified potential mechanisms. Mice subjected to sixteen weeks of exercise showed improved whole-body physiologic functions and exhibited substantial inhibition of amyloidosis, particularly in the liver and spleen. Exercise activated the hepatic p38 mitogen-activated protein kinase (p38 MAPK) signaling pathway and the downstream transcription factor tumor suppressor p53. This activation resulted in elevated expression and phosphorylation of heat shock protein beta-1 (HSPB1), a chaperone that defends against protein aggregation. In amyloidosis-induced mice, the hepatic p38 MAPK-related adaptive responses were additively enhanced by exercise. We observed that with exercise, greater amounts of phosphorylated HSPB1 accumulated at amyloid deposition areas, which we suspect inhibits amyloid fibril formation. Collectively, our findings demonstrate the exercise-activated specific chaperone prevention of amyloidosis, and suggest that exercise may amplify intracellular stress-related protective adaptation pathways against age-associated disorders such as amyloidosis.
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Affiliation(s)
- Xiaoran Cui
- Department of Aging Biology, Institute of Pathogenesis and Disease Prevention, Shinshu University Graduate School of Medicine, Matsumoto, Japan
| | - Jinko Sawashita
- Products Technology Team, Supplement Strategic Unit, Pharma & Supplemental Nutrition Solutions Vehicle, Kaneka Corporation, Osaka, Japan
| | - Jian Dai
- Department of Aging Biology, Institute of Pathogenesis and Disease Prevention, Shinshu University Graduate School of Medicine, Matsumoto, Japan.,Department of Neuro-health Innovation, Institute for Biomedical Sciences, Shinshu University, Matsumoto, Japan
| | - Chang Liu
- Aging Biology, Department of Biomedical Engineering, Shinshu University Graduate School of Medicine, Science and Technology, Matsumoto, Japan
| | - Yuichi Igarashi
- Department of Aging Biology, Institute of Pathogenesis and Disease Prevention, Shinshu University Graduate School of Medicine, Matsumoto, Japan
| | - Masayuki Mori
- Department of Aging Biology, Institute of Pathogenesis and Disease Prevention, Shinshu University Graduate School of Medicine, Matsumoto, Japan.,Department of Neuro-health Innovation, Institute for Biomedical Sciences, Shinshu University, Matsumoto, Japan
| | - Hiroki Miyahara
- Department of Aging Biology, Institute of Pathogenesis and Disease Prevention, Shinshu University Graduate School of Medicine, Matsumoto, Japan.,Department of Neuro-health Innovation, Institute for Biomedical Sciences, Shinshu University, Matsumoto, Japan
| | - Keiichi Higuchi
- Department of Neuro-health Innovation, Institute for Biomedical Sciences, Shinshu University, Matsumoto, Japan.,Community Health Care Research Center, Nagano University Health and Medicine, Nagano, Japan
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Perampalam P, Hassan HM, Lilly GE, Passos DT, Torchia J, Kiser PK, Bozovic A, Kulasingam V, Dick FA. Disrupting the DREAM transcriptional repressor complex induces apolipoprotein overexpression and systemic amyloidosis in mice. J Clin Invest 2021; 131:140903. [PMID: 33444292 DOI: 10.1172/jci140903] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Accepted: 12/29/2020] [Indexed: 12/20/2022] Open
Abstract
DREAM (Dp, Rb-like, E2F, and MuvB) is a transcriptional repressor complex that regulates cell proliferation, and its loss causes neonatal lethality in mice. To investigate DREAM function in adult mice, we used an assembly-defective p107 protein and conditional deletion of its redundant family member p130. In the absence of DREAM assembly, mice displayed shortened survival characterized by systemic amyloidosis but no evidence of excessive cellular proliferation. Amyloid deposits were found in the heart, liver, spleen, and kidneys but not the brain or bone marrow. Using laser-capture microdissection followed by mass spectrometry, we identified apolipoproteins as the most abundant components of amyloids. Intriguingly, apoA-IV was the most detected amyloidogenic protein in amyloid deposits, suggesting apoA-IV amyloidosis (AApoAIV). AApoAIV is a recently described form, whereby WT apoA-IV has been shown to predominate in amyloid plaques. We determined by ChIP that DREAM directly regulated Apoa4 and that the histone variant H2AZ was reduced from the Apoa4 gene body in DREAM's absence, leading to overexpression. Collectively, we describe a mechanism by which epigenetic misregulation causes apolipoprotein overexpression and amyloidosis, potentially explaining the origins of nongenetic amyloid subtypes.
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Affiliation(s)
- Pirunthan Perampalam
- London Regional Cancer Program, London Health Sciences Centre, London, Ontario, Canada.,Department of Biochemistry, Western University, London, Ontario, Canada
| | - Haider M Hassan
- London Regional Cancer Program, London Health Sciences Centre, London, Ontario, Canada.,Department of Oncology, Western University, London, Ontario, Canada
| | - Grace E Lilly
- London Regional Cancer Program, London Health Sciences Centre, London, Ontario, Canada.,Department of Biochemistry, Western University, London, Ontario, Canada
| | - Daniel T Passos
- London Regional Cancer Program, London Health Sciences Centre, London, Ontario, Canada.,Department of Pathology and Laboratory Medicine, Western University, London, Ontario, Canada
| | - Joseph Torchia
- London Regional Cancer Program, London Health Sciences Centre, London, Ontario, Canada.,Department of Biochemistry, Western University, London, Ontario, Canada.,Department of Oncology, Western University, London, Ontario, Canada
| | - Patti K Kiser
- Department of Pathology and Laboratory Medicine, Western University, London, Ontario, Canada
| | - Andrea Bozovic
- Department of Clinical Biochemistry, University Health Network, Toronto, Ontario, Canada.,Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, Ontario, Canada
| | - Vathany Kulasingam
- Department of Clinical Biochemistry, University Health Network, Toronto, Ontario, Canada.,Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, Ontario, Canada
| | - Frederick A Dick
- London Regional Cancer Program, London Health Sciences Centre, London, Ontario, Canada.,Department of Oncology, Western University, London, Ontario, Canada.,Department of Pathology and Laboratory Medicine, Western University, London, Ontario, Canada.,Children's Health Research Institute, London, Ontario, Canada
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4
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Suppression of Mouse AApoAII Amyloidosis Progression by Daily Supplementation with Oxidative Stress Inhibitors. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2019; 2019:1263274. [PMID: 31281565 PMCID: PMC6589291 DOI: 10.1155/2019/1263274] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/12/2019] [Accepted: 04/22/2019] [Indexed: 12/20/2022]
Abstract
Amyloidosis is a group of diseases characterized by protein misfolding and aggregation to form amyloid fibrils and subsequent deposition within various tissues. Previous studies have indicated that amyloidosis is often associated with oxidative stress. However, it is not clear whether oxidative stress is involved in the progression of amyloidosis. We administered the oxidative stress inhibitors tempol and apocynin via drinking water to the R1.P1-Apoa2c mouse strain induced to develop mouse apolipoprotein A-II (AApoAII) amyloidosis and found that treatment with oxidative stress inhibitors led to reduction in AApoAII amyloidosis progression compared to an untreated group after 12 weeks, especially in the skin, stomach, and liver. There was no effect on ApoA-II plasma levels or expression of Apoa2 mRNA. Detection of the lipid peroxidation markers 4-hydroxynonenal (4-HNE) and malondialdehyde (MDA) revealed that the antioxidative effects of the treatments were most obvious in the skin, stomach, and liver, which contained higher levels of basal oxidative stress. Moreover, the unfolded protein response was reduced in the liver and was associated with a decrease in oxidative stress and amyloid deposition. These results suggest that antioxidants can suppress the progression of AApoAII amyloid deposition in the improved microenvironment of tissues and that the effect may be related to the levels of oxidative stress in local tissues. This finding provides insights for antioxidative stress treatment strategies for amyloidosis.
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Teissier T, Quersin V, Gnemmi V, Daroux M, Howsam M, Delguste F, Lemoine C, Fradin C, Schmidt AM, Cauffiez C, Brousseau T, Glowacki F, Tessier FJ, Boulanger E, Frimat M. Knockout of receptor for advanced glycation end-products attenuates age-related renal lesions. Aging Cell 2019; 18:e12850. [PMID: 30794349 PMCID: PMC6413655 DOI: 10.1111/acel.12850] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2018] [Revised: 09/04/2018] [Accepted: 09/09/2018] [Indexed: 01/10/2023] Open
Abstract
Pro‐aging effects of endogenous advanced glycation end‐products (AGEs) have been reported, and there is increasing interest in the pro‐inflammatory and ‐fibrotic effects of their binding to RAGE (the main AGE receptor). The role of dietary AGEs in aging remains ill‐defined, but the predominantly renal accumulation of dietary carboxymethyllysine (CML) suggests the kidneys may be particularly affected. We studied the impact of RAGE invalidation and a CML‐enriched diet on renal aging. Two‐month‐old male, wild‐type (WT) and RAGE−/− C57Bl/6 mice were fed a control or a CML‐enriched diet (200 μg CML/gfood) for 18 months. Compared to controls, we observed higher CML levels in the kidneys of both CML WT and CML RAGE−/− mice, with a predominantly tubular localization. The CML‐rich diet had no significant impact on the studied renal parameters, whereby only a trend to worsening glomerular sclerosis was detected. Irrespective of diet, RAGE−/− mice were significantly protected against nephrosclerosis lesions (hyalinosis, tubular atrophy, fibrosis and glomerular sclerosis) and renal senile apolipoprotein A‐II (ApoA‐II) amyloidosis (p < 0.001). A positive linear correlation between sclerosis score and ApoA‐II amyloidosis score (r = 0.92) was observed. Compared with old WT mice, old RAGE−/− mice exhibited lower expression of inflammation markers and activation of AKT, and greater expression of Sod2 and SIRT1. Overall, nephrosclerosis lesions and senile amyloidosis were significantly reduced in RAGE−/− mice, indicating a protective effect of RAGE deletion with respect to renal aging. This could be due to reduced inflammation and oxidative stress in RAGE−/− mice, suggesting RAGE is an important receptor in so‐called inflamm‐aging.
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Affiliation(s)
- Thibault Teissier
- U995 - Lille Inflammation Research International Center; INSERM, CHU Lille, University of Lille; Lille France
| | - Valentine Quersin
- U995 - Lille Inflammation Research International Center; INSERM, CHU Lille, University of Lille; Lille France
- Department of Nephrology; CHU Lille; Lille France
| | - Viviane Gnemmi
- Department of Pathology; U1172 - Jean-Pierre Aubert Research Center, INSERM, CHU Lille, University of Lille; Lille France
| | - Maité Daroux
- U995 - Lille Inflammation Research International Center; INSERM, CHU Lille, University of Lille; Lille France
| | - Mike Howsam
- U995 - Lille Inflammation Research International Center; INSERM, CHU Lille, University of Lille; Lille France
| | - Florian Delguste
- U995 - Lille Inflammation Research International Center; INSERM, CHU Lille, University of Lille; Lille France
| | - Cécile Lemoine
- U995 - Lille Inflammation Research International Center; INSERM, CHU Lille, University of Lille; Lille France
| | - Chantal Fradin
- U995 - Lille Inflammation Research International Center; INSERM, CHU Lille, University of Lille; Lille France
| | - Ann-Marie Schmidt
- Department of Medicine, Diabetes Research Center; NYU Langone Medical Center; New York New York
| | - Christelle Cauffiez
- EA4483 IMPECS-IMPact of Environmental ChemicalS on Human Health; CHU Lille, University of Lille; Lille France
| | - Thierry Brousseau
- UF8832 - Biochimie Automatisée; Pôle de Biologie Pathologie Génétique; CHU Lille; Lille France
| | - François Glowacki
- Department of Nephrology; CHU Lille; Lille France
- EA4483 IMPECS-IMPact of Environmental ChemicalS on Human Health; CHU Lille, University of Lille; Lille France
| | - Frédéric J. Tessier
- U995 - Lille Inflammation Research International Center; INSERM, CHU Lille, University of Lille; Lille France
| | - Eric Boulanger
- U995 - Lille Inflammation Research International Center; INSERM, CHU Lille, University of Lille; Lille France
- Department of Geriatrics; CHU Lille; Lille France
| | - Marie Frimat
- U995 - Lille Inflammation Research International Center; INSERM, CHU Lille, University of Lille; Lille France
- Department of Nephrology; CHU Lille; Lille France
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Miyahara H, Sawashita J, Ishikawa E, Yang M, Ding X, Liu Y, Hachiya N, Kametani F, Yazaki M, Mori M, Higuchi K. Comprehensive proteomic profiles of mouse AApoAII amyloid fibrils provide insights into the involvement of lipoproteins in the pathology of amyloidosis. J Proteomics 2017; 172:111-121. [PMID: 28988881 DOI: 10.1016/j.jprot.2017.10.003] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2017] [Revised: 08/17/2017] [Accepted: 10/05/2017] [Indexed: 02/06/2023]
Abstract
Amyloidosis is a disorder characterized by extracellular fibrillar deposits of misfolded proteins. The amyloid deposits commonly contain several non-fibrillar proteins as amyloid-associated proteins, but their roles in amyloidosis pathology are still unknown. In mouse senile amyloidosis, apolipoprotein A-II (ApoA-II) forms extracellular amyloid fibril (AApoAII) deposits with other proteins (AApoAII-associated proteins) in many organs. We previously reported that R1.P1-Apoa2c mice provide a reproducible model of AApoAII amyloidosis. In order to investigate the sequential alterations of AApoAII-associated protein, we performed a proteomic analysis of amyloid fibrils extracted from mouse liver tissues that contained different levels of AApoAII deposition. We identified 6 AApoAII-associated proteins that constituted 20 of the top-ranked proteins in mice with severe AApoAII deposition. Although the amount of AApoAII-associated proteins increased with the progression of amyloidosis, the relative abundance of AApoAII-associated proteins changed little throughout the progression of amyloidosis. On the other hand, plasma levels of these proteins showed dramatic changes during the progression of amyloidosis. In addition, we confirmed that AApoAII-associated proteins were significantly associated with lipid metabolism based on functional enrichment analysis, and lipids were co-deposited with AApoAII fibrils from early stages of development of amyloidosis. Thus, these results demonstrate that lipoproteins are involved in AApoAII amyloidosis pathology. SIGNIFICANCE This study presented proteomic profiles of AApoAII amyloidosis during disease progression and it revealed co-deposition of lipids with AApoAII deposits based on functional analyses. The relative abundance of AApoAII-associated proteins in the amyloid fibril fractions did not change over the course of development of AApoAII amyloidosis pathology. However, their concentrations in plasma changed dramatically with progression of the disease. Interestingly, several AApoAII-associated proteins have been found as constituents of lipid-rich lesions of other degenerative diseases, such as atherosclerosis and age-related macular degeneration. The common protein components among these diseases with lipid-rich deposits could be accounted for by a lipoprotein retention model.
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Affiliation(s)
- Hiroki Miyahara
- Department of Aging Biology, Institute of Pathogenesis and Disease Prevention, Shinshu University Graduate School of Medicine, 390-8621 Matsumoto, Japan
| | - Jinko Sawashita
- Department of Aging Biology, Institute of Pathogenesis and Disease Prevention, Shinshu University Graduate School of Medicine, 390-8621 Matsumoto, Japan; Department of Biological Sciences for Intractable Neurological Diseases, Institute for Biomedical Sciences, Interdisciplinary Cluster for Cutting Edge Research, Shinshu University, 390-8621 Matsumoto, Japan
| | - Eri Ishikawa
- Division of Instrumental Research, Research Center for Supports to Advanced Science, Shinshu University, 390-8621 Matsumoto, Japan
| | - Mu Yang
- Department of Aging Biology, Institute of Pathogenesis and Disease Prevention, Shinshu University Graduate School of Medicine, 390-8621 Matsumoto, Japan
| | - Xin Ding
- Department of Aging Biology, Institute of Pathogenesis and Disease Prevention, Shinshu University Graduate School of Medicine, 390-8621 Matsumoto, Japan
| | - Yingye Liu
- Department of Aging Biology, Institute of Pathogenesis and Disease Prevention, Shinshu University Graduate School of Medicine, 390-8621 Matsumoto, Japan
| | - Naomi Hachiya
- Tokyo Metropolitan Industrial Technology Research Institute, Aomi, Koto-ku, 135-0064 Tokyo, Japan
| | - Fuyuki Kametani
- Department of Dementia and Higher Brain Function, Tokyo Metropolitan Institute of Medical Science, 156-8506 Tokyo, Japan
| | - Masahide Yazaki
- Department of Biological Sciences for Intractable Neurological Diseases, Institute for Biomedical Sciences, Interdisciplinary Cluster for Cutting Edge Research, Shinshu University, 390-8621 Matsumoto, Japan
| | - Masayuki Mori
- Department of Aging Biology, Institute of Pathogenesis and Disease Prevention, Shinshu University Graduate School of Medicine, 390-8621 Matsumoto, Japan; Department of Advanced Medicine for Health Promotion, Institute for Biomedical Sciences, Interdisciplinary Cluster for Cutting Edge Research, Shinshu University, 390-8621 Matsumoto, Japan
| | - Keiichi Higuchi
- Department of Aging Biology, Institute of Pathogenesis and Disease Prevention, Shinshu University Graduate School of Medicine, 390-8621 Matsumoto, Japan; Department of Biological Sciences for Intractable Neurological Diseases, Institute for Biomedical Sciences, Interdisciplinary Cluster for Cutting Edge Research, Shinshu University, 390-8621 Matsumoto, Japan.
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Li L, Sawashita J, Ding X, Yang M, Xu Z, Miyahara H, Mori M, Higuchi K. Caloric restriction reduces the systemic progression of mouse AApoAII amyloidosis. PLoS One 2017; 12:e0172402. [PMID: 28225824 PMCID: PMC5321440 DOI: 10.1371/journal.pone.0172402] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2016] [Accepted: 11/22/2016] [Indexed: 11/19/2022] Open
Abstract
In mouse senile amyloidosis, apolipoprotein (Apo) A-II is deposited extracellularly in many organs in the form of amyloid fibrils (AApoAII). Reduction of caloric intake, known as caloric restriction (CR), slows the progress of senescence and age-related disorders in mice. In this study, we intravenously injected 1 μg of isolated AApoAII fibrils into R1.P1-Apoa2c mice to induce experimental amyloidosis and investigated the effects of CR for the next 16 weeks. In the CR group, AApoAII amyloid deposits in the liver, tongue, small intestine and skin were significantly reduced compared to those of the ad libitum feeding group. CR treatment led to obvious reduction in body weight, improvement in glucose metabolism and reduction in the plasma concentration of ApoA-II. Our molecular biological analyses of the liver suggested that CR treatment might improve the symptoms of inflammation, the unfolded protein response induced by amyloid deposits and oxidative stress. Furthermore, we suggest that CR treatment might improve mitochondrial functions via the sirtuin 1-peroxisome proliferator-activated receptor γ coactivator 1α (SIRT1-PGC-1α) pathway. We suggest that CR is a promising approach for treating the onset and/or progression of amyloidosis, especially for systemic amyloidosis such as senile AApoAII amyloidosis. Our analysis of CR treatment for amyloidosis should provide useful information for determining the cause of amyloidosis and developing effective preventive treatments.
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Affiliation(s)
- Lin Li
- Department of Aging Biology, Institute of Pathogenesis and Disease Prevention, Shinshu University Graduate School of Medicine, Matsumoto, Japan
| | - Jinko Sawashita
- Department of Aging Biology, Institute of Pathogenesis and Disease Prevention, Shinshu University Graduate School of Medicine, Matsumoto, Japan
- Department of Biological Sciences for Intractable Neurological Diseases, Institute for Biomedical Sciences, Interdisciplinary Cluster for Cutting Edge Research, Shinshu University, Matsumoto, Japan
- * E-mail:
| | - Xin Ding
- Department of Aging Biology, Institute of Pathogenesis and Disease Prevention, Shinshu University Graduate School of Medicine, Matsumoto, Japan
| | - Mu Yang
- Department of Aging Biology, Institute of Pathogenesis and Disease Prevention, Shinshu University Graduate School of Medicine, Matsumoto, Japan
| | - Zhe Xu
- Department of Aging Biology, Institute of Pathogenesis and Disease Prevention, Shinshu University Graduate School of Medicine, Matsumoto, Japan
| | - Hiroki Miyahara
- Department of Aging Biology, Institute of Pathogenesis and Disease Prevention, Shinshu University Graduate School of Medicine, Matsumoto, Japan
| | - Masayuki Mori
- Department of Aging Biology, Institute of Pathogenesis and Disease Prevention, Shinshu University Graduate School of Medicine, Matsumoto, Japan
- Department of Advanced Medicine for Health Promotion, Institute for Biomedical Sciences, Interdisciplinary Cluster for Cutting Edge Research, Shinshu University, Matsumoto, Japan
| | - Keiichi Higuchi
- Department of Aging Biology, Institute of Pathogenesis and Disease Prevention, Shinshu University Graduate School of Medicine, Matsumoto, Japan
- Department of Biological Sciences for Intractable Neurological Diseases, Institute for Biomedical Sciences, Interdisciplinary Cluster for Cutting Edge Research, Shinshu University, Matsumoto, Japan
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van der Heijden RA, Bijzet J, Meijers WC, Yakala GK, Kleemann R, Nguyen TQ, de Boer RA, Schalkwijk CG, Hazenberg BPC, Tietge UJF, Heeringa P. Obesity-induced chronic inflammation in high fat diet challenged C57BL/6J mice is associated with acceleration of age-dependent renal amyloidosis. Sci Rep 2015; 5:16474. [PMID: 26563579 PMCID: PMC4643235 DOI: 10.1038/srep16474] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2015] [Accepted: 10/13/2015] [Indexed: 01/13/2023] Open
Abstract
Obesity-induced inflammation presumably accelerates the development of chronic kidney diseases. However, little is known about the sequence of these inflammatory events and their contribution to renal pathology. We investigated the effects of obesity on the evolution of age-dependent renal complications in mice in conjunction with the development of renal and systemic low-grade inflammation (LGI). C57BL/6J mice susceptible to develop age-dependent sclerotic pathologies with amyloid features in the kidney, were fed low (10% lard) or high-fat diets (45% lard) for 24, 40 and 52 weeks. HFD-feeding induced overt adiposity, altered lipid and insulin homeostasis, increased systemic LGI and adipokine release. HFD-feeding also caused renal upregulation of pro-inflammatory genes, infiltrating macrophages, collagen I protein, increased urinary albumin and NGAL levels. HFD-feeding severely aggravated age-dependent structural changes in the kidney. Remarkably, enhanced amyloid deposition rather than sclerosis was observed. The degree of amyloidosis correlated significantly with body weight. Amyloid deposits stained positive for serum amyloid A (SAA) whose plasma levels were chronically elevated in HFD mice. Our data indicate obesity-induced chronic inflammation as a risk factor for the acceleration of age-dependent renal amyloidosis and functional impairment in mice, and suggest that obesity-enhanced chronic secretion of SAA may be the driving factor behind this process.
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Affiliation(s)
- Roel A van der Heijden
- Department of Pathology &Medical Biology, Medical Biology Section, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands.,Top Institute Food and Nutrition, Wageningen, The Netherlands
| | - Johan Bijzet
- Department of Rheumatology and Clinical Immunology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Wouter C Meijers
- Department of Cardiology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Gopala K Yakala
- Translational Laboratory in Genetic Medicine (TLGM), Agency for Science, Technology and Research (A*STAR) and Department of Medicine, National University of Singapore, Singapore
| | - Robert Kleemann
- Department of Metabolic Health Research, The Netherlands Organization for Applied Scientific Research (TNO), Leiden, The Netherlands.,Top Institute Food and Nutrition, Wageningen, The Netherlands
| | - Tri Q Nguyen
- Department of Pathology, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Rudolf A de Boer
- Department of Cardiology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Casper G Schalkwijk
- Experimental Medicine, Maastricht University Medical Centre, Maastricht, The Netherlands.,Top Institute Food and Nutrition, Wageningen, The Netherlands
| | - Bouke P C Hazenberg
- Department of Rheumatology and Clinical Immunology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Uwe J F Tietge
- Department of Pediatrics, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Peter Heeringa
- Department of Pathology &Medical Biology, Medical Biology Section, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands.,Top Institute Food and Nutrition, Wageningen, The Netherlands
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9
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Tong J, Xie J, Ren H, Liu J, Zhang W, Wei C, Xu J, Zhang W, Li X, Wang W, Lv D, He JC, Chen N. Comparison of Glomerular Transcriptome Profiles of Adult-Onset Steroid Sensitive Focal Segmental Glomerulosclerosis and Minimal Change Disease. PLoS One 2015; 10:e0140453. [PMID: 26536600 PMCID: PMC4633097 DOI: 10.1371/journal.pone.0140453] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2015] [Accepted: 09/25/2015] [Indexed: 01/17/2023] Open
Abstract
Objective To search for biomarkers to differentiate primary focal segmental glomerulosclerosis (FSGS) and minimal change disease (MCD). Methods We isolated glomeruli from kidney biopsies of 6 patients with adult-onset steroid sensitiveFSGS and 5 patients with MCD, and compared the profiles of glomerular transcriptomes between the two groups of patients using microarray analysis. Results Analysis of differential expressed genes (DEGs) revealed that up-regulated DEGs in FSGS patients compared with MCD patients were primarily involved in spermatogenesis, gamete generation, regulation of muscle contraction, response to unfolded protein, cell proliferation and skeletal system development. The down-regulated DEGs were primarily related to metabolic process, intracellular transport, oxidation/reduction andestablishment of intracellular localization. We validated the expression of the top 6 up-regulated and top 6 down-regulated DEGs using real-time PCR. Membrane metallo-endopeptidase (MME) is a down-regulated gene that was previously identified as a key gene for kidney development. Immunostaining confirmed that the protein expression of MME decreased significantly in FSGS kidneys compared with MCD kidneys. Conclusions This report was the first study to examine transcriptomes in Chinese patients with various glomerular diseases. Expressions of MME both in RNA and protein level decreased significantly in glomeruli of FSGS kidneys compared with MCD kidneys. Our data suggested that MME might play a role in the normal physiological function of podocytes and a decrease in MME expression might be related to podocyte injury. We also identified genes and pathways specific for FSGS versus MCD, and our data could help identify potential new biomarkers for the differential diagnosis between these two diseases.
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Affiliation(s)
- Jun Tong
- Department of Nephrology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, P. R. China
| | - Jingyuan Xie
- Department of Nephrology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, P. R. China.,Institute of Nephrology, Shanghai Jiao Tong University School of Medicine, Shanghai, P. R. China
| | - Hong Ren
- Department of Nephrology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, P. R. China
| | - Jian Liu
- Department of Nephrology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, P. R. China
| | - Weijia Zhang
- Department of Medicine, Division of Nephrology, Icahn School of Medicine at Mount Sinai, New York, New York, United States of America
| | - Chengguo Wei
- Department of Medicine, Division of Nephrology, Icahn School of Medicine at Mount Sinai, New York, New York, United States of America
| | - Jing Xu
- Department of Nephrology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, P. R. China
| | - Wen Zhang
- Department of Nephrology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, P. R. China
| | - Xiao Li
- Department of Nephrology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, P. R. China
| | - Weiming Wang
- Department of Nephrology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, P. R. China.,Institute of Nephrology, Shanghai Jiao Tong University School of Medicine, Shanghai, P. R. China
| | - Danfeng Lv
- National Center for Gene Research and Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai, P. R. China
| | - John Cijiang He
- Institute of Nephrology, Shanghai Jiao Tong University School of Medicine, Shanghai, P. R. China.,Department of Medicine, Division of Nephrology, Icahn School of Medicine at Mount Sinai, New York, New York, United States of America
| | - Nan Chen
- Department of Nephrology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, P. R. China.,Institute of Nephrology, Shanghai Jiao Tong University School of Medicine, Shanghai, P. R. China
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