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Han Z, Andrš M, Madhavan BK, Kaymak S, Sulaj A, Kender Z, Kopf S, Kihm L, Pepperkok R, Janscak P, Nawroth P, Kumar V. The importance of nuclear RAGE-Mcm2 axis in diabetes or cancer-associated replication stress. Nucleic Acids Res 2023; 51:2298-2318. [PMID: 36807739 PMCID: PMC10018352 DOI: 10.1093/nar/gkad085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Revised: 01/18/2023] [Accepted: 01/26/2023] [Indexed: 02/23/2023] Open
Abstract
An elevated frequency of DNA replication defects is associated with diabetes and cancer. However, data linking these nuclear perturbations to the onset or progression of organ complications remained unexplored. Here, we report that RAGE (Receptor for Advanced Glycated Endproducts), previously believed to be an extracellular receptor, upon metabolic stress localizes to the damaged forks. There it interacts and stabilizes the minichromosome-maintenance (Mcm2-7) complex. Accordingly, RAGE deficiency leads to slowed fork progression, premature fork collapse, hypersensitivity to replication stress agents and reduction of viability, which was reversed by the reconstitution of RAGE. This was marked by the 53BP1/OPT-domain expression and the presence of micronuclei, premature loss-of-ciliated zones, increased incidences of tubular-karyomegaly, and finally, interstitial fibrosis. More importantly, the RAGE-Mcm2 axis was selectively compromised in cells expressing micronuclei in human biopsies and mouse models of diabetic nephropathy and cancer. Thus, the functional RAGE-Mcm2/7 axis is critical in handling replication stress in vitro and human disease.
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Affiliation(s)
- Zhe Han
- Department of Medicine I and Clinical Chemistry, University Hospital of Heidelberg, INF 410, Heidelberg, Germany
| | - Martin Andrš
- Institute of Molecular Genetics, Academy of Sciences of the Czech Republic, CZ-14300 Prague, Czech Republic
- Institute of Molecular Cancer Research, University of Zurich, 8057 Zurich, Switzerland
| | - Bindhu K Madhavan
- Department of Medicine I and Clinical Chemistry, University Hospital of Heidelberg, INF 410, Heidelberg, Germany
| | - Serap Kaymak
- Department of Medicine I and Clinical Chemistry, University Hospital of Heidelberg, INF 410, Heidelberg, Germany
| | - Alba Sulaj
- Department of Medicine I and Clinical Chemistry, University Hospital of Heidelberg, INF 410, Heidelberg, Germany
- German Center of Diabetes Research (DZD), Neuherberg, Germany
| | - Zoltan Kender
- Department of Medicine I and Clinical Chemistry, University Hospital of Heidelberg, INF 410, Heidelberg, Germany
- German Center of Diabetes Research (DZD), Neuherberg, Germany
| | - Stefan Kopf
- Department of Medicine I and Clinical Chemistry, University Hospital of Heidelberg, INF 410, Heidelberg, Germany
- German Center of Diabetes Research (DZD), Neuherberg, Germany
| | - Lars Kihm
- Department of Medicine I and Clinical Chemistry, University Hospital of Heidelberg, INF 410, Heidelberg, Germany
| | - Rainer Pepperkok
- European Molecular Biology Laboratory, Advanced Light Microscopy Facility, Heidelberg, Germany
| | - Pavel Janscak
- Institute of Molecular Genetics, Academy of Sciences of the Czech Republic, CZ-14300 Prague, Czech Republic
- Institute of Molecular Cancer Research, University of Zurich, 8057 Zurich, Switzerland
| | - Peter Nawroth
- Department of Medicine I and Clinical Chemistry, University Hospital of Heidelberg, INF 410, Heidelberg, Germany
- Institute for Immunology, University Hospital of Heidelberg, INF 305, Heidelberg, Germany
- German Center of Diabetes Research (DZD), Neuherberg, Germany
| | - Varun Kumar
- Department of Medicine I and Clinical Chemistry, University Hospital of Heidelberg, INF 410, Heidelberg, Germany
- Institute for Immunology, University Hospital of Heidelberg, INF 305, Heidelberg, Germany
- European Molecular Biology Laboratory, Advanced Light Microscopy Facility, Heidelberg, Germany
- German Center of Diabetes Research (DZD), Neuherberg, Germany
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2
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Yang R, Zhang X. A potential new pathway for heparin treatment of sepsis-induced lung injury: inhibition of pulmonary endothelial cell pyroptosis by blocking hMGB1-LPS-induced caspase-11 activation. Front Cell Infect Microbiol 2022; 12:984835. [PMID: 36189354 PMCID: PMC9519888 DOI: 10.3389/fcimb.2022.984835] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2022] [Accepted: 08/29/2022] [Indexed: 11/18/2022] Open
Abstract
Sepsis is a significant cause of mortality in critically ill patients. Acute lung injury (ALI) is a leading cause of death in these patients. Endothelial cells exposed to the bacterial endotoxin lipopolysaccharide (LPS) can progress into pyroptosis, a programmed lysis of cell death triggered by inflammatory caspases. It is characterized by lytic cell death induced by the binding of intracellular LPS to caspases 4/5 in human cells and caspase-11 in mouse cells. In mice,caspase-11-dependent pyroptosis plays an important role in endotoxemia. HMGB1 released into the plasma binds to LPS and is internalized into lysosomes in endothelial cells via the advanced glycation end product receptor. In the acidic lysosomal environment, HMGB1 permeates the phospholipid bilayer, which is followed by the leakage of LPS into the cytoplasm and the activation of caspase-11. Heparin is an anticoagulant widely applied in the treatment of thrombotic disease. Previous studies have found that heparin could block caspase-11-dependent inflammatory reactions, decrease sepsis-related mortality, and reduce ALI, independent of its anticoagulant activity. Heparin or modified heparin with no anticoagulant property could inhibit the alarmin HMGB1-LPS interactions, minimize LPS entry into the cytoplasm, and thus blocking caspase-11 activation. Heparin has been studied in septic ALI, but the regulatory mechanism of pulmonary endothelial cell pyroptosis is still unclear. In this paper, we discuss the potential novel role of heparin in the treatment of septic ALI from the unique mechanism of pulmonary endothelial cell pyroptosis.
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Burr SD, Dorroh CC, Stewart JA. Rap1a Activity Elevated the Impact of Endogenous AGEs in Diabetic Collagen to Stimulate Increased Myofibroblast Transition and Oxidative Stress. Int J Mol Sci 2022; 23:ijms23094480. [PMID: 35562872 PMCID: PMC9101126 DOI: 10.3390/ijms23094480] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2022] [Revised: 04/08/2022] [Accepted: 04/12/2022] [Indexed: 12/07/2022] Open
Abstract
Diabetics have an increased risk for heart failure due to cardiac fibroblast functional changes occurring as a result of AGE/RAGE signaling. Advanced glycation end products (AGEs) levels are higher in diabetics and stimulate elevated RAGE (receptor for AGE) signaling. AGE/RAGE signaling can alter the expression of proteins linked to extracellular matrix (ECM) remodeling and oxidative stressors. Our lab has identified a small GTPase, Rap1a, that may overlap the AGE/RAGE signaling pathway. We sought to determine the role Rap1a plays in mediating AGE/RAGE changes and to assess the impact of isolated collagen on further altering these changes. Primary cardiac fibroblasts from non-diabetic and diabetic mice with and without RAGE expression and from mice lacking Rap1a were cultured on tail collagen extracted from non-diabetic or diabetic mice, and in addition, cells were treated with Rap1a activator, EPAC. Protein analyses were performed for changes in RAGE-associated signaling proteins (RAGE, PKC-ζ, ERK1/2) and downstream RAGE signaling outcomes (α-SMA, NF-κB, SOD-2). Increased levels of endogenous AGEs within the diabetic collagen and increased Rap1a activity promoted myofibroblast transition and oxidative stress, suggesting Rap1a activity elevated the impact of AGEs in the diabetic ECM to stimulate myofibroblast transition and oxidative stress.
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Dual Nature of RAGE in Host Reaction and Nurturing the Mother-Infant Bond. Int J Mol Sci 2022; 23:ijms23042086. [PMID: 35216202 PMCID: PMC8880422 DOI: 10.3390/ijms23042086] [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: 01/10/2022] [Revised: 02/04/2022] [Accepted: 02/07/2022] [Indexed: 02/01/2023] Open
Abstract
Non-enzymatic glycation is an unavoidable reaction that occurs across biological taxa. The final products of this irreversible reaction are called advanced glycation end-products (AGEs). The endogenously formed AGEs are known to be bioactive and detrimental to human health. Additionally, exogenous food-derived AGEs are debated to contribute to the development of aging and various diseases. Receptor for AGEs (RAGE) is widely known to elicit biological reactions. The binding of RAGE to other ligands (e.g., high mobility group box 1, S100 proteins, lipopolysaccharides, and amyloid-β) can result in pathological processes via the activation of intracellular RAGE signaling pathways, including inflammation, diabetes, aging, cancer growth, and metastasis. RAGE is now recognized as a pattern-recognition receptor. All mammals have RAGE homologs; however, other vertebrates, such as birds, amphibians, fish, and reptiles, do not have RAGE at the genomic level. This evidence from an evolutionary perspective allows us to understand why mammals require RAGE. In this review, we provide an overview of the scientific knowledge about the role of RAGE in physiological and pathological processes. In particular, we focus on (1) RAGE biology, (2) the role of RAGE in physiological and pathophysiological processes, (3) RAGE isoforms, including full-length membrane-bound RAGE (mRAGE), and the soluble forms of RAGE (sRAGE), which comprise endogenous secretory RAGE (esRAGE) and an ectodomain-shed form of RAGE, and (4) oxytocin transporters in the brain and intestine, which are important for maternal bonding and social behaviors.
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Sionov RV. Leveling Up the Controversial Role of Neutrophils in Cancer: When the Complexity Becomes Entangled. Cells 2021; 10:cells10092486. [PMID: 34572138 PMCID: PMC8465406 DOI: 10.3390/cells10092486] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2021] [Revised: 09/12/2021] [Accepted: 09/15/2021] [Indexed: 12/13/2022] Open
Abstract
Neutrophils are the most abundant immune cell in the circulation of human and act as gatekeepers to discard foreign elements that have entered the body. They are essential in initiating immune responses for eliminating invaders, such as microorganisms and alien particles, as well as to act as immune surveyors of cancer cells, especially during the initial stages of carcinogenesis and for eliminating single metastatic cells in the circulation and in the premetastatic organs. Since neutrophils can secrete a whole range of factors stored in their many granules as well as produce reactive oxygen and nitrogen species upon stimulation, neutrophils may directly or indirectly affect carcinogenesis in both the positive and negative directions. An intricate crosstalk between tumor cells, neutrophils, other immune cells and stromal cells in the microenvironment modulates neutrophil function resulting in both anti- and pro-tumor activities. Both the anti-tumor and pro-tumor activities require chemoattraction towards the tumor cells, neutrophil activation and ROS production. Divergence is seen in other neutrophil properties, including differential secretory repertoire and membrane receptor display. Many of the direct effects of neutrophils on tumor growth and metastases are dependent on tight neutrophil–tumor cell interactions. Among them, the neutrophil Mac-1 interaction with tumor ICAM-1 and the neutrophil L-selectin interaction with tumor-cell sialomucins were found to be involved in the neutrophil-mediated capturing of circulating tumor cells resulting in increased metastatic seeding. On the other hand, the anti-tumor function of neutrophils was found to rely on the interaction between tumor-surface-expressed receptor for advanced glycation end products (RAGE) and Cathepsin G expressed on the neutrophil surface. Intriguingly, these two molecules are also involved in the promotion of tumor growth and metastases. RAGE is upregulated during early inflammation-induced carcinogenesis and was found to be important for sustaining tumor growth and homing at metastatic sites. Cathepsin G was found to be essential for neutrophil-supported lung colonization of cancer cells. These data level up the complexity of the dual role of neutrophils in cancer.
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Affiliation(s)
- Ronit Vogt Sionov
- Hadassah Medical School, The Hebrew University of Jerusalem, Ein Kerem Campus, P.O.B. 12272, Jerusalem 9112102, Israel
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Choltus H, Lavergne M, De Sousa Do Outeiro C, Coste K, Belville C, Blanchon L, Sapin V. Pathophysiological Implication of Pattern Recognition Receptors in Fetal Membranes Rupture: RAGE and NLRP Inflammasome. Biomedicines 2021; 9:biomedicines9091123. [PMID: 34572309 PMCID: PMC8466405 DOI: 10.3390/biomedicines9091123] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Revised: 08/25/2021] [Accepted: 08/26/2021] [Indexed: 12/28/2022] Open
Abstract
Preterm prelabor ruptures of fetal membranes (pPROM) are a pregnancy complication responsible for 30% of all preterm births. This pathology currently appears more as a consequence of early and uncontrolled process runaway activation, which is usually implicated in the physiologic rupture at term: inflammation. This phenomenon can be septic but also sterile. In this latter case, the inflammation depends on some specific molecules called “alarmins” or “damage-associated molecular patterns” (DAMPs) that are recognized by pattern recognition receptors (PRRs), leading to a microbial-free inflammatory response. Recent data clarify how this activation works and which receptor translates this inflammatory signaling into fetal membranes (FM) to manage a successful rupture after 37 weeks of gestation. In this context, this review focused on two PRRs: the receptor for advanced glycation end-products (RAGE) and the NLRP7 inflammasome.
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Affiliation(s)
- Helena Choltus
- CNRS, INSERM, GReD, Université Clermont Auvergne, 63000 Clermont-Ferrand, France; (H.C.); (M.L.); (C.D.S.D.O.); (K.C.); (C.B.); (L.B.)
| | - Marilyne Lavergne
- CNRS, INSERM, GReD, Université Clermont Auvergne, 63000 Clermont-Ferrand, France; (H.C.); (M.L.); (C.D.S.D.O.); (K.C.); (C.B.); (L.B.)
| | - Coraline De Sousa Do Outeiro
- CNRS, INSERM, GReD, Université Clermont Auvergne, 63000 Clermont-Ferrand, France; (H.C.); (M.L.); (C.D.S.D.O.); (K.C.); (C.B.); (L.B.)
| | - Karen Coste
- CNRS, INSERM, GReD, Université Clermont Auvergne, 63000 Clermont-Ferrand, France; (H.C.); (M.L.); (C.D.S.D.O.); (K.C.); (C.B.); (L.B.)
| | - Corinne Belville
- CNRS, INSERM, GReD, Université Clermont Auvergne, 63000 Clermont-Ferrand, France; (H.C.); (M.L.); (C.D.S.D.O.); (K.C.); (C.B.); (L.B.)
| | - Loïc Blanchon
- CNRS, INSERM, GReD, Université Clermont Auvergne, 63000 Clermont-Ferrand, France; (H.C.); (M.L.); (C.D.S.D.O.); (K.C.); (C.B.); (L.B.)
| | - Vincent Sapin
- CNRS, INSERM, GReD, Université Clermont Auvergne, 63000 Clermont-Ferrand, France; (H.C.); (M.L.); (C.D.S.D.O.); (K.C.); (C.B.); (L.B.)
- CHU de Clermont-Ferrand, Biochemistry and Molecular Genetic Department, 63000 Clermont-Ferrand, France
- Correspondence: ; Tel.: +33-473-178-174
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7
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DNA-Aptamer Raised against Receptor for Advanced Glycation End Products Improves Survival Rate in Septic Mice. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2021; 2021:9932311. [PMID: 34413930 PMCID: PMC8369179 DOI: 10.1155/2021/9932311] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/04/2021] [Revised: 07/16/2021] [Accepted: 07/23/2021] [Indexed: 12/29/2022]
Abstract
Despite remarkable scientific advances in the understanding of molecular mechanisms for sepsis, therapeutic options are far from satisfactory. High mobility group box 1 (HMGB1), one of the ligands of receptor for advanced glycation end products (RAGE), is a late mediator of lethality in septic mice. We have recently found that the DNA-aptamer raised against RAGE (RAGE-aptamer) significantly blocks experimental diabetic nephropathy and melanoma growth and metastasis. We examined the effects of RAGE-aptamer on sepsis score, survival rate, and inflammatory and oxidative stress responses in serum, peripheral monocytes, kidneys and livers of lipopolysaccharide- (LPS-) injected mice, and on LPS-exposed THP-1 cells. RAGE-aptamer inhibited the binding of HMGB1 to RAGE in vitro. RAGE-aptamer significantly (P = 0.002) improved sepsis score at 8 hours after LPS injection and survival rate at 24 hours (P < 0.01, 70%) in septic mice compared with LPS+vehicle- or LPS+control-aptamer-treated mice. RAGE-aptamer treatment significantly decreased expression of p-NF-κB p65, an active form of redox-sensitive transcriptional factor, NF-κB and gene or protein expression of TNF-α, IL-1β, IL-6, and HMGB1 in serum, peripheral monocytes, and kidneys of septic mice in association with the reduction of oxidative stress and improvement of metabolic acidosis, renal and liver damage. LPS-induced oxidative stress, inflammatory reactions, and growth suppression in THP-1 cells were significantly blocked by RAGE-aptamer. Our present study suggests that RAGE-aptamer could attenuate multiple organ damage in LPS-injected septic mice partly by inhibiting the inflammatory reactions via suppression of HMGB1-RAGE interaction.
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8
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Hypoxia and the Receptor for Advanced Glycation End Products (RAGE) Signaling in Cancer. Int J Mol Sci 2021; 22:ijms22158153. [PMID: 34360919 PMCID: PMC8348933 DOI: 10.3390/ijms22158153] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Revised: 07/25/2021] [Accepted: 07/26/2021] [Indexed: 02/06/2023] Open
Abstract
Hypoxia is characterized by an inadequate supply of oxygen to tissues, and hypoxic regions are commonly found in solid tumors. The cellular response to hypoxic conditions is mediated through the activation of hypoxia-inducible factors (HIFs) that control the expression of a large number of target genes. Recent studies have shown that the receptor for advanced glycation end products (RAGE) participates in hypoxia-dependent cellular adaptation. We review recent evidence on the role of RAGE signaling in tumor biology under hypoxic conditions.
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9
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Gusev E, Sarapultsev A, Hu D, Chereshnev V. Problems of Pathogenesis and Pathogenetic Therapy of COVID-19 from the Perspective of the General Theory of Pathological Systems (General Pathological Processes). Int J Mol Sci 2021; 22:7582. [PMID: 34299201 PMCID: PMC8304657 DOI: 10.3390/ijms22147582] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2021] [Revised: 06/30/2021] [Accepted: 07/12/2021] [Indexed: 01/18/2023] Open
Abstract
The COVID-19 pandemic examines not only the state of actual health care but also the state of fundamental medicine in various countries. Pro-inflammatory processes extend far beyond the classical concepts of inflammation. They manifest themselves in a variety of ways, beginning with extreme physiology, then allostasis at low-grade inflammation, and finally the shockogenic phenomenon of "inflammatory systemic microcirculation". The pathogenetic core of critical situations, including COVID-19, is this phenomenon. Microcirculatory abnormalities, on the other hand, lie at the heart of a specific type of general pathological process known as systemic inflammation (SI). Systemic inflammatory response, cytokine release, cytokine storm, and thrombo-inflammatory syndrome are all terms that refer to different aspects of SI. As a result, the metabolic syndrome model does not adequately reflect the pathophysiology of persistent low-grade systemic inflammation (ChSLGI). Diseases associated with ChSLGI, on the other hand, are risk factors for a severe COVID-19 course. The review examines the role of hypoxia, metabolic dysfunction, scavenger receptors, and pattern-recognition receptors, as well as the processes of the hemophagocytic syndrome, in the systemic alteration and development of SI in COVID-19.
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Affiliation(s)
- Evgenii Gusev
- Institute of Immunology and Physiology, Ural Branch of the Russian Academy of Science, 620049 Ekaterinburg, Russia; (E.G.); (V.C.)
| | - Alexey Sarapultsev
- Institute of Immunology and Physiology, Ural Branch of the Russian Academy of Science, 620049 Ekaterinburg, Russia; (E.G.); (V.C.)
- School of Medical Biology, South Ural State University, 454080 Chelyabinsk, Russia
| | - Desheng Hu
- Department of Integrated Traditional Chinese and Western Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 200092, China;
| | - Valeriy Chereshnev
- Institute of Immunology and Physiology, Ural Branch of the Russian Academy of Science, 620049 Ekaterinburg, Russia; (E.G.); (V.C.)
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10
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Mollace A, Coluccio ML, Donato G, Mollace V, Malara N. Cross-talks in colon cancer between RAGE/AGEs axis and inflammation/immunotherapy. Oncotarget 2021; 12:1281-1295. [PMID: 34194625 PMCID: PMC8238251 DOI: 10.18632/oncotarget.27990] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Accepted: 06/02/2021] [Indexed: 12/19/2022] Open
Abstract
The tumour microenvironment is the result of the activity of many types of cells in various metabolic states, whose metabolites are shared between cells. This cellular complexity results in an availability profile of nutrients and reactive metabolites such as advanced glycation end products (AGE). The tumour microenvironment is not favourable to immune cells due to hypoxia and for the existence of significant competition between various types of cells for a limited nutrient pool. However, it is now known that cancer cells can influence the host's immune reaction through the expression and secretion of numerous molecules. The microenvironment can therefore present itself in different patterns that contribute to shaping immune surveillance. Colorectal cancer (CRC) is one of the most important causes of death in cancer patients. Recently, immunotherapy has begun to give encouraging results in some groups of patients suffering from this neoplasm. The analysis of literature data shows that the RAGE (Receptor for advanced glycation end products) and its numerous ligands contribute to connect the energy metabolic pathway, which appears prevalently disconnected by mitochondrial running, with the immune reaction, conditioned by local microbiota and influencing tumour growth. Understanding how metabolism in cancer and immune cells shapes response and resistance to therapy, will provide novel potential strategies to increase both the number of tumour types treated by immunotherapy and the rate of immunotherapy response. The analysis of literature data shows that an immunotherapy approach based on the knowledge of RAGE and its ligands is not only possible, but also desirable in the treatment of CRC.
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Affiliation(s)
- Annachiara Mollace
- Department of Health Sciences, Research Centre IRC-FSH, University Magna Græcia of Catanzaro, 88100 Catanzaro, Italy
| | - Maria Laura Coluccio
- Department of Experimental and Clinical Medicine, Bionem Laboratory, Magna Græcia University of Catanzaro, 88100 Catanzaro, Italy
| | - Giuseppe Donato
- Department of Health Sciences, University Magna Græcia of Catanzaro, Campus S. Venuta, 88100 Catanzaro, Italy
| | - Vincenzo Mollace
- Department of Health Sciences, Research Centre IRC-FSH, University Magna Græcia of Catanzaro, 88100 Catanzaro, Italy.,These authors contributed equally to this work
| | - Natalia Malara
- Department of Experimental and Clinical Medicine, Bionem Laboratory, Magna Græcia University of Catanzaro, 88100 Catanzaro, Italy.,These authors contributed equally to this work
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11
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Scavello F, Zeni F, Milano G, Macrì F, Castiglione S, Zuccolo E, Scopece A, Pezone G, Tedesco CC, Nigro P, Degani G, Gambini E, Veglia F, Popolo L, Pompilio G, Colombo GI, Bianchi ME, Raucci A. Soluble Receptor for Advanced Glycation End-products regulates age-associated Cardiac Fibrosis. Int J Biol Sci 2021; 17:2399-2416. [PMID: 34326683 PMCID: PMC8315019 DOI: 10.7150/ijbs.56379] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Accepted: 05/20/2021] [Indexed: 12/21/2022] Open
Abstract
Myocardial aging increases the cardiovascular risk in the elderly. The Receptor for Advanced Glycation End-products (RAGE) is involved in age-related disorders. The soluble isoform (sRAGE) acts as a scavenger blocking the membrane-bound receptor activation. This study aims at investigating RAGE contribution to age-related cardiac remodeling. We analyzed the cardiac function of three different age groups of female Rage-/- and C57BL/6N (WT) mice: 2.5- (Young), 12- (Middle-age, MA) and 21-months (Old) old. While aging, Rage-/- mice displayed an increase in left ventricle (LV) dimensions compared to age-matched WT animals, with the main differences observed in the MA groups. Rage-/- mice showed higher fibrosis and a larger number of α-Smooth Muscle Actin (SMA)+ cells with age, along with increased expression of pro-fibrotic Transforming Growth Factor (TGF)-β1 pathway components. RAGE isoforms were undetectable in LV of WT mice, nevertheless, circulating sRAGE declined with aging and inversely associated with LV diastolic dimensions. Human cardiac fibroblasts stimulated with sRAGE exhibited a reduction in proliferation, pro-fibrotic proteins and TGF-beta Receptor 1 (TGFbR1) expression and Smad2-3 activation. Finally, sRAGE administration to MA WT animals reduced cardiac fibrosis. Hence, our work shows that RAGE associates with age-dependent myocardial changes and indicates sRAGE as an inhibitor of cardiac fibroblasts differentiation and age-dependent cardiac fibrosis.
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Affiliation(s)
- Francesco Scavello
- Unit of Experimental Cardio-Oncology and Cardiovascular Aging, Centro Cardiologico Monzino-IRCCS, Milan, Italy
| | - Filippo Zeni
- Unit of Experimental Cardio-Oncology and Cardiovascular Aging, Centro Cardiologico Monzino-IRCCS, Milan, Italy
| | - Giuseppina Milano
- Vascular Biology and Regenerative Medicine Unit, Centro Cardiologico Monzino-IRCCS, Milan, Italy
| | - Federica Macrì
- Unit of Experimental Cardio-Oncology and Cardiovascular Aging, Centro Cardiologico Monzino-IRCCS, Milan, Italy
| | - Stefania Castiglione
- Unit of Experimental Cardio-Oncology and Cardiovascular Aging, Centro Cardiologico Monzino-IRCCS, Milan, Italy
| | - Estella Zuccolo
- Unit of Experimental Cardio-Oncology and Cardiovascular Aging, Centro Cardiologico Monzino-IRCCS, Milan, Italy
| | - Alessandro Scopece
- Vascular Biology and Regenerative Medicine Unit, Centro Cardiologico Monzino-IRCCS, Milan, Italy
| | - Giovanni Pezone
- Unit of Experimental Cardio-Oncology and Cardiovascular Aging, Centro Cardiologico Monzino-IRCCS, Milan, Italy
| | | | - Patrizia Nigro
- Vascular Biology and Regenerative Medicine Unit, Centro Cardiologico Monzino-IRCCS, Milan, Italy
| | - Genny Degani
- Department of Biosciences, University of Milan, Milan, Italy
| | - Elisa Gambini
- Vascular Biology and Regenerative Medicine Unit, Centro Cardiologico Monzino-IRCCS, Milan, Italy
| | - Fabrizio Veglia
- Unit of Biostatistics, Centro Cardiologico Monzino-IRCCS, Milan, Italy
| | - Laura Popolo
- Department of Biosciences, University of Milan, Milan, Italy
| | - Giulio Pompilio
- Vascular Biology and Regenerative Medicine Unit, Centro Cardiologico Monzino-IRCCS, Milan, Italy
| | - Gualtiero I Colombo
- Unit of Immunology and Functional Genomics, Centro Cardiologico Monzino-IRCCS, Milan, Italy
| | - Marco E Bianchi
- Chromatin Dynamics Unit, San Raffaele University and IRCCS San Raffaele Hospital, Milan, Italy
| | - Angela Raucci
- Unit of Experimental Cardio-Oncology and Cardiovascular Aging, Centro Cardiologico Monzino-IRCCS, Milan, Italy
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12
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Madhavan BK, Han Z, Singh B, Bordt N, Kaymak S, Bandapalli OR, Kihm L, Shahzad K, Isermann B, Herzig S, Nawroth P, Kumar V. Elevated Expression of the RAGE Variant- V in SCLC Mitigates the Effect of Chemotherapeutic Drugs. Cancers (Basel) 2021; 13:cancers13112843. [PMID: 34200336 PMCID: PMC8201239 DOI: 10.3390/cancers13112843] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Revised: 05/31/2021] [Accepted: 06/02/2021] [Indexed: 02/01/2023] Open
Abstract
Simple Summary Radiomimetic drugs induce extensive genotoxic insults to their target cells. Irreparable DNA damage leaves cells with the choice between a program leading to cell death or senescence, but not DNA repair. Among the challenges of an advanced stage of small cell lung carcinoma (SCLC), the resistance to radiomimetic drugs is the most prominent one. In SCLC, the initial chemotherapeutic treatment primes cell to modify their DNA repair and cell cycle regulatory systems, using alternative but highly efficient forms of DNA repair and auxiliary factors. This modulated system now bypasses several regulatory controls. Thus, at this stage, cells become resistant to any beneficial effects of chemotherapeutic drugs. In the present study, we observed that variant-V of the receptor for advanced glycation end-products (RAGE) is abundantly expressed in advancing and metastasizing SCLC. Therefore, it may serve as a potential target for specific therapeutic interventions directed to SCLC. Abstract Small cell lung carcinoma (SCLC) is a highly aggressive malignancy with a very high mortality rate. A prominent part of this is because these carcinomas are refractory to chemotherapies, such as etoposide or cisplatin, making effective treatment almost impossible. Here, we report that elevated expression of the RAGE variant-V in SCLC promotes homology-directed DNA DSBs repair when challenged with anti-cancer drugs. This variant exclusively localizes to the nucleus, interacts with members of the double-strand break (DSB) repair machinery and thus promotes the recruitment of DSBs repair factors at the site of damage. Increased expression of this variant thus, promotes timely DNA repair. Congruently, the tumor cells expressing high levels of variant-V can tolerate chemotherapeutic drug treatment better than the RAGE depleted cells. Our findings reveal a yet undisclosed role of the RAGE variant-V in the homology-directed DNA repair. This variant thus can be a potential target to be considered for future therapeutic approaches in advanced SSLC.
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Affiliation(s)
- Bindhu K. Madhavan
- Department of Medicine I and Clinical Chemistry, University Hospital of Heidelberg, INF 410, 69120 Heidelberg, Germany; (B.K.M.); (Z.H.); (B.S.); (N.B.); (S.K.); (L.K.); (P.N.)
| | - Zhe Han
- Department of Medicine I and Clinical Chemistry, University Hospital of Heidelberg, INF 410, 69120 Heidelberg, Germany; (B.K.M.); (Z.H.); (B.S.); (N.B.); (S.K.); (L.K.); (P.N.)
| | - Bishal Singh
- Department of Medicine I and Clinical Chemistry, University Hospital of Heidelberg, INF 410, 69120 Heidelberg, Germany; (B.K.M.); (Z.H.); (B.S.); (N.B.); (S.K.); (L.K.); (P.N.)
| | - Nico Bordt
- Department of Medicine I and Clinical Chemistry, University Hospital of Heidelberg, INF 410, 69120 Heidelberg, Germany; (B.K.M.); (Z.H.); (B.S.); (N.B.); (S.K.); (L.K.); (P.N.)
| | - Serap Kaymak
- Department of Medicine I and Clinical Chemistry, University Hospital of Heidelberg, INF 410, 69120 Heidelberg, Germany; (B.K.M.); (Z.H.); (B.S.); (N.B.); (S.K.); (L.K.); (P.N.)
| | - Obul Reddy Bandapalli
- Hopp Children’s Cancer Center (KiTZ), 69120 Heidelberg, Germany;
- Medical Faculty, Heidelberg University, 69117 Heidelberg, Germany
| | - Lars Kihm
- Department of Medicine I and Clinical Chemistry, University Hospital of Heidelberg, INF 410, 69120 Heidelberg, Germany; (B.K.M.); (Z.H.); (B.S.); (N.B.); (S.K.); (L.K.); (P.N.)
| | - Khurrum Shahzad
- Institute for Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, University Hospital Leipzig, 04103 Leipzig, Germany; (K.S.); (B.I.)
| | - Berend Isermann
- Institute for Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, University Hospital Leipzig, 04103 Leipzig, Germany; (K.S.); (B.I.)
| | - Stephan Herzig
- German Center for Diabetes Research (DZD), 85764 Neuherberg, Germany;
- Molecular Metabolic Control, Technical University Munich, 80333 Munich, Germany
- Helmholtz Center Munich, Institute for Diabetes and Cancer, D-85764 Neuherberg, Germany
- Joint Heidelberg-IDC Translational Diabetes Programm, Helmholtz-Zentrum, 69120 Heidelberg, Germany
| | - Peter Nawroth
- Department of Medicine I and Clinical Chemistry, University Hospital of Heidelberg, INF 410, 69120 Heidelberg, Germany; (B.K.M.); (Z.H.); (B.S.); (N.B.); (S.K.); (L.K.); (P.N.)
- German Center for Diabetes Research (DZD), 85764 Neuherberg, Germany;
- Joint Heidelberg-IDC Translational Diabetes Programm, Helmholtz-Zentrum, 69120 Heidelberg, Germany
| | - Varun Kumar
- Department of Medicine I and Clinical Chemistry, University Hospital of Heidelberg, INF 410, 69120 Heidelberg, Germany; (B.K.M.); (Z.H.); (B.S.); (N.B.); (S.K.); (L.K.); (P.N.)
- German Center for Diabetes Research (DZD), 85764 Neuherberg, Germany;
- European Molecular Biology Laboratory, Advanced Light Microscopy Facility, 69117 Heidelberg, Germany
- Correspondence: ; Tel.: +49-6221-56-6960
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13
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Kennon AM, Stewart JA. RAGE Differentially Altered in vitro Responses in Vascular Smooth Muscle Cells and Adventitial Fibroblasts in Diabetes-Induced Vascular Calcification. Front Physiol 2021; 12:676727. [PMID: 34163373 PMCID: PMC8215351 DOI: 10.3389/fphys.2021.676727] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2021] [Accepted: 05/11/2021] [Indexed: 12/12/2022] Open
Abstract
The Advanced Glycation End-Products (AGE)/Receptor for AGEs (RAGE) signaling pathway exacerbates diabetes-mediated vascular calcification (VC) in vascular smooth muscle cells (VSMCs). Other cell types are involved in VC, such as adventitial fibroblasts (AFBs). We hope to elucidate some of the mechanisms responsible for differential signaling in diabetes-mediated VC with this work. This work utilizes RAGE knockout animals and in vitro calcification to measure calcification and protein responses. Our calcification data revealed that VSMCs calcification was AGE/RAGE dependent, yet AFBs calcification was not an AGE-mediated RAGE response. Protein expression data showed VSMCs lost their phenotype marker, α-smooth muscle actin, and had a higher RAGE expression over non-diabetics. RAGE knockout (RKO) VSMCs did not show changes in phenotype markers. P38 MAPK, a downstream RAGE-associated signaling molecule, had significantly increased activation with calcification in both diabetic and diabetic RKO VSMCs. AFBs showed a loss in myofibroblast marker, α-SMA, due to calcification treatment. RAGE expression decreased in calcified diabetic AFBs, and P38 MAPK activation significantly increased in diabetic and diabetic RKO AFBs. These findings point to potentially an alternate receptor mediating the calcification response in the absence of RAGE. Overall, VSMCs and AFBs respond differently to calcification and the application of AGEs.
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Affiliation(s)
- Amber M Kennon
- Department of BioMolecular Sciences, School of Pharmacy, University of Mississippi, Mississippi, MS, United States
| | - James A Stewart
- Department of BioMolecular Sciences, School of Pharmacy, University of Mississippi, Mississippi, MS, United States
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14
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Rap1a Regulates Cardiac Fibroblast Contraction of 3D Diabetic Collagen Matrices by Increased Activation of the AGE/RAGE Cascade. Cells 2021; 10:cells10061286. [PMID: 34067282 PMCID: PMC8224555 DOI: 10.3390/cells10061286] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Revised: 05/12/2021] [Accepted: 05/20/2021] [Indexed: 01/11/2023] Open
Abstract
Cardiovascular disease is a common diabetic complication that can arise when cardiac fibroblasts transition into myofibroblasts. Myofibroblast transition can be induced by advanced glycated end products (AGEs) present in the extracellular matrix (ECM) activating RAGE (receptor for advanced glycated end products) to elicit intracellular signaling. The levels of AGEs are higher under diabetic conditions due to the hyperglycemic conditions present in diabetics. AGE/RAGE signaling has been shown to alter protein expression and ROS production in cardiac fibroblasts, resulting in changes in cellular function, such as migration and contraction. Recently, a small GTPase, Rap1a, has been identified to overlap the AGE/RAGE signaling cascade and mediate changes in protein expression. While Rap1a has been shown to impact AGE/RAGE-induced protein expression, there are currently no data examining the impact Rap1a has on AGE/RAGE-induced cardiac fibroblast function. Therefore, we aimed to determine the impact of Rap1a on AGE/RAGE-mediated cardiac fibroblast contraction, as well as the influence isolated diabetic ECM has on facilitating these effects. In order to address this idea, genetically different cardiac fibroblasts were embedded in 3D collagen matrices consisting of collagen isolated from either non-diabetic of diabetic mice. Fibroblasts were treated with EPAC and/or exogenous AGEs, which was followed by assessment of matrix contraction, protein expression (α-SMA, SOD-1, and SOD-2), and hydrogen peroxide production. The results showed Rap1a overlaps the AGE/RAGE cascade to increase the myofibroblast population and generation of ROS production. The increase in myofibroblasts and oxidative stress appeared to contribute to increased matrix contraction, which was further exacerbated by diabetic conditions. Based off these results, we determined that Rap1a was essential in mediating the response of cardiac fibroblasts to AGEs within diabetic collagen.
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15
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Takayama S, Kawanishi M, Yamauchi K, Tokumitsu D, Kojima H, Masutani T, Iddamalgoda A, Mitsunaga T, Tanaka H. Ellagitannins from Rosa roxburghii suppress poly(I:C)-induced IL-8 production in human keratinocytes. J Nat Med 2021; 75:623-632. [PMID: 33830449 DOI: 10.1007/s11418-021-01509-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Accepted: 03/27/2021] [Indexed: 12/18/2022]
Abstract
The anti-inflammatory effects of a 50% aqueous extract of Rosa roxburghii fruit (RRFE) and two ellagitannins (strictinin and casuarictin) isolated from the RRFE were evaluated in a cell model of skin inflammation induced by self-RNA released from epidermal cells damaged by UV ray (UVR) irradiation. The RRFE inhibited interleukin-8 (IL-8) mRNA expression in normal human epidermal keratinocytes (NHEKs) stimulated with polyinosinic:polycytidylic acid (poly(I:C)), a ligand of toll-like receptor-3 (TLR-3). The plant-derived anti-inflammatory agents, dipotassium glycyrrhizinate (GK2) and allantoin, had no influence on the IL-8 expression. The purified compounds, strictinin and casuarictin, inhibited the IL-8 mRNA expression and IL-8 release induced in NHEKs by poly(I:C). These ellagitannins were thus found to be responsible for the biological activity exhibited by the RRFE. This study demonstrates that RRFE and isolated RRFE compounds show promise as ingredients for products formulated to improve skin disorders induced by UVR irradiation.
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Affiliation(s)
- Satoru Takayama
- Medical Science Division, United Graduate School of Drug Discovery and Medical Information Sciences, Gifu University, 1-1 Yanagido, Gifu City, Gifu, 501-1194, Japan. .,Research and Development Department, Ichimaru Pharcos Co., Ltd, 318-1 Asagi, Motosu City, Gifu, 501-0475, Japan.
| | - Miho Kawanishi
- Department of Applied Life Science, Faculty of Applied Biological Science, Gifu University, 1-1 Yanagido, Gifu City, Gifu, 501-1194, Japan
| | - Kosei Yamauchi
- Department of Applied Life Science, Faculty of Applied Biological Science, Gifu University, 1-1 Yanagido, Gifu City, Gifu, 501-1194, Japan
| | - Daiki Tokumitsu
- Laboratory of Pharmacology, Department of Bioactive Molecules, Gifu Pharmaceutical University, 1-25-4 Daigaku-nishi, Gifu City, Gifu, 501-1196, Japan
| | - Hiroyuki Kojima
- Research and Development Department, Ichimaru Pharcos Co., Ltd, 318-1 Asagi, Motosu City, Gifu, 501-0475, Japan
| | - Teruaki Masutani
- Research and Development Department, Ichimaru Pharcos Co., Ltd, 318-1 Asagi, Motosu City, Gifu, 501-0475, Japan
| | - Arunasiri Iddamalgoda
- Research and Development Department, Ichimaru Pharcos Co., Ltd, 318-1 Asagi, Motosu City, Gifu, 501-0475, Japan
| | - Tohru Mitsunaga
- Department of Applied Life Science, Faculty of Applied Biological Science, Gifu University, 1-1 Yanagido, Gifu City, Gifu, 501-1194, Japan
| | - Hiroyuki Tanaka
- Medical Science Division, United Graduate School of Drug Discovery and Medical Information Sciences, Gifu University, 1-1 Yanagido, Gifu City, Gifu, 501-1194, Japan. .,Laboratory of Pharmacology, Department of Bioactive Molecules, Gifu Pharmaceutical University, 1-25-4 Daigaku-nishi, Gifu City, Gifu, 501-1196, Japan.
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16
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Erusalimsky JD. The use of the soluble receptor for advanced glycation-end products (sRAGE) as a potential biomarker of disease risk and adverse outcomes. Redox Biol 2021; 42:101958. [PMID: 33839083 PMCID: PMC8113049 DOI: 10.1016/j.redox.2021.101958] [Citation(s) in RCA: 53] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Revised: 03/21/2021] [Accepted: 03/24/2021] [Indexed: 02/07/2023] Open
Abstract
The soluble receptor for advanced glycation end-products (sRAGE) has been classically considered a sink for pro-inflammatory RAGE ligands and as such has been associated with protection from inflammatory stress and disease. An alternative, though not mutually exclusive view is that high levels of sRAGE in circulation reflect the overstimulation of cell surface RAGE which if persistent, lead to the amplification of pro-inflammatory processes and the exacerbation of pathological states. With these two scenarios in mind this review focuses on the potential role of sRAGE as a prospective biomarker of disease risk and adverse outcomes. The prognostic value of measuring sRAGE levels in blood is subjected to debate. Raised sRAGE levels may result from the overstimulation of cell surface RAGE. Raised sRAGE may reflect chronic inflammation and multimorbidity rather than a healthy state. sRAGE is a promising biomarker of disease risk and adverse outcomes.
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Affiliation(s)
- Jorge D Erusalimsky
- The Cellular Senescence and Pathophysiology Group, Cardiff Metropolitan University, Cardiff, UK.
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17
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Burr SD, Stewart JA. Rap1a Overlaps the AGE/RAGE Signaling Cascade to Alter Expression of α-SMA, p-NF-κB, and p-PKC-ζ in Cardiac Fibroblasts Isolated from Type 2 Diabetic Mice. Cells 2021; 10:cells10030557. [PMID: 33806572 PMCID: PMC8000763 DOI: 10.3390/cells10030557] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2021] [Revised: 02/28/2021] [Accepted: 02/28/2021] [Indexed: 12/12/2022] Open
Abstract
Cardiovascular disease, specifically heart failure, is a common complication for individuals with type 2 diabetes mellitus. Heart failure can arise with stiffening of the left ventricle, which can be caused by “active” cardiac fibroblasts (i.e., myofibroblasts) remodeling the extracellular matrix (ECM). Differentiation of fibroblasts to myofibroblasts has been demonstrated to be an outcome of AGE/RAGE signaling. Hyperglycemia causes advanced glycated end products (AGEs) to accumulate within the body, and this process is greatly accelerated under chronic diabetic conditions. AGEs can bind and activate their receptor (RAGE) to trigger multiple downstream outcomes, such as altering ECM remodeling, inflammation, and oxidative stress. Previously, our lab has identified a small GTPase, Rap1a, that possibly overlaps the AGE/RAGE signaling cascade to affect the downstream outcomes. Rap1a acts as a molecular switch connecting extracellular signals to intracellular responses. Therefore, we hypothesized that Rap1a crosses the AGE/RAGE cascade to alter the expression of AGE/RAGE associated signaling proteins in cardiac fibroblasts in type 2 diabetic mice. To delineate this cascade, we used genetically different cardiac fibroblasts from non-diabetic, diabetic, non-diabetic RAGE knockout, diabetic RAGE knockout, and Rap1a knockout mice and treated them with pharmacological modifiers (exogenous AGEs, EPAC, Rap1a siRNA, and pseudosubstrate PKC-ζ). We examined changes in expression of proteins implicated as markers for myofibroblasts (α-SMA) and inflammation/oxidative stress (NF-κB and SOD-1). In addition, oxidative stress was also assessed by measuring hydrogen peroxide concentration. Our results indicated that Rap1a connects to the AGE/RAGE cascade to promote and maintain α-SMA expression in cardiac fibroblasts. Moreover, Rap1a, in conjunction with activation of the AGE/RAGE cascade, increased NF-κB expression as well as hydrogen peroxide concentration, indicating a possible oxidative stress response. Additionally, knocking down Rap1a expression resulted in an increase in SOD-1 expression suggesting that Rap1a can affect oxidative stress markers independently of the AGE/RAGE signaling cascade. These results demonstrated that Rap1a contributes to the myofibroblast population within the heart via AGE/RAGE signaling as well as promotes possible oxidative stress. This study offers a new potential therapeutic target that could possibly reduce the risk for developing diabetic cardiovascular complications attributed to AGE/RAGE signaling.
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18
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Prantner D, Nallar S, Richard K, Spiegel D, Collins KD, Vogel SN. Classically activated mouse macrophages produce methylglyoxal that induces a TLR4- and RAGE-independent proinflammatory response. J Leukoc Biol 2021; 109:605-619. [PMID: 32678947 PMCID: PMC7855181 DOI: 10.1002/jlb.3a0520-745rr] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Revised: 05/18/2020] [Accepted: 05/19/2020] [Indexed: 01/05/2023] Open
Abstract
The highly reactive compound methylglyoxal (MG) can cause direct damage to cells and tissues by reacting with cellular macromolecules. MG has been identified as a biomarker associated with increased sepsis-induced mortality. Patients undergoing septic shock have significantly elevated circulating MG levels compared to postoperative patients and healthy controls. Furthermore, MG has been implicated in the development of type II diabetes mellitus and Alzheimer's disease. Because MG is generated during glycolysis, we hypothesized that MG may be produced by classically activated (M1) macrophages, possibly contributing to the inflammatory response. LPS and IFN-γ-treated macrophages acquired an M1 phenotype (as evidenced by M1 markers and enhanced glycolysis) and formed MG adducts, MG-H1, MG-H2, and MG-H3, which were detected using antibodies specific for MG-modified proteins (methylglyoxal 5-hydro-5-methylimidazolones). MG adducts were also increased in the lungs of LPS-treated mice. Macrophages treated with LPS and IFN-γ also exhibited decreased expression of glyoxalase 1 (Glo1), an enzyme that metabolizes MG. Concentrations of exogenous, purified MG > 0.5 mM were toxic to macrophages; however, a nontoxic dose of 0.3 mM induced TNF-α and IL-1β, albeit to a lesser extent than LPS stimulation. Despite prior evidence that MG adducts may signal through "receptor for advanced glycation endproducts" (RAGE), MG-mediated cell death and cytokine induction by exogenous MG was RAGE-independent in primary macrophages. Finally, RAGE-deficient mice did not exhibit a significant survival advantage following lethal LPS injection. Overall, our evidence suggests that MG may be produced by M1 macrophages during sepsis, following IFN-γ-dependent down-regulation of Glo1, contributing to over-exuberant inflammation.
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Affiliation(s)
- Daniel Prantner
- Dept. of Microbiology and Immunology, University of Maryland, School of Medicine, Baltimore, MD
| | - Shreeram Nallar
- Dept. of Microbiology and Immunology, University of Maryland, School of Medicine, Baltimore, MD
| | - Katharina Richard
- Dept. of Microbiology and Immunology, University of Maryland, School of Medicine, Baltimore, MD
| | - David Spiegel
- Department of Chemistry, Yale University, New Haven, CT
| | - Kim D. Collins
- Dept. of Microbiology and Immunology, University of Maryland, School of Medicine, Baltimore, MD
- Institute of Marine and Environmental Technology (IMET), University of Maryland, Baltimore, Baltimore, MD
| | - Stefanie N. Vogel
- Dept. of Microbiology and Immunology, University of Maryland, School of Medicine, Baltimore, MD
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19
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Yan Z, Luo H, Xie B, Tian T, Li S, Chen Z, Liu J, Zhao X, Zhang L, Deng Y, Billiar TR, Jiang Y. Targeting adaptor protein SLP76 of RAGE as a therapeutic approach for lethal sepsis. Nat Commun 2021; 12:308. [PMID: 33436632 PMCID: PMC7804203 DOI: 10.1038/s41467-020-20577-3] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2020] [Accepted: 12/07/2020] [Indexed: 01/29/2023] Open
Abstract
Accumulating evidence shows that RAGE has an important function in the pathogenesis of sepsis. However, the mechanisms by which RAGE transduces signals to downstream kinase cascades during septic shock are not clear. Here, we identify SLP76 as a binding partner for the cytosolic tail of RAGE both in vitro and in vivo and demonstrate that SLP76 binds RAGE through its sterile α motif (SAM) to mediate downstream signaling. Genetic deficiency of RAGE or SLP76 reduces AGE-induced phosphorylation of p38 MAPK, ERK1/2 and IKKα/β, as well as cytokine release. Delivery of the SAM domain into macrophages via the TAT cell-penetrating peptide blocks proinflammatory cytokine production. Furthermore, administration of TAT-SAM attenuates inflammatory cytokine release and tissue damage in mice subjected to cecal ligation and puncture (CLP) and protects these mice from the lethality of sepsis. These findings reveal an important function for SLP76 in RAGE-mediated pro-inflammatory signaling and shed light on the development of SLP76-targeted therapeutics for sepsis.
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Affiliation(s)
- Zhengzheng Yan
- grid.284723.80000 0000 8877 7471Guangdong Provincial Key Laboratory of Proteomics, State Key Laboratory of Organ Failure Research, Department of Pathophysiology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, 510515 China ,grid.21925.3d0000 0004 1936 9000Department of Surgery, University of Pittsburgh School of Medicine, Pittsburgh, PA 15213 USA ,grid.416466.7Department of Anesthesiology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515 China
| | - Haihua Luo
- grid.284723.80000 0000 8877 7471Guangdong Provincial Key Laboratory of Proteomics, State Key Laboratory of Organ Failure Research, Department of Pathophysiology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, 510515 China
| | - Bingyao Xie
- grid.284723.80000 0000 8877 7471Guangdong Provincial Key Laboratory of Proteomics, State Key Laboratory of Organ Failure Research, Department of Pathophysiology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, 510515 China
| | - Tian Tian
- grid.284723.80000 0000 8877 7471Guangdong Provincial Key Laboratory of Proteomics, State Key Laboratory of Organ Failure Research, Department of Pathophysiology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, 510515 China
| | - Shan Li
- grid.284723.80000 0000 8877 7471Guangdong Provincial Key Laboratory of Proteomics, State Key Laboratory of Organ Failure Research, Department of Pathophysiology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, 510515 China
| | - Zhixia Chen
- grid.21925.3d0000 0004 1936 9000Department of Surgery, University of Pittsburgh School of Medicine, Pittsburgh, PA 15213 USA
| | - Jinghua Liu
- grid.284723.80000 0000 8877 7471Guangdong Provincial Key Laboratory of Proteomics, State Key Laboratory of Organ Failure Research, Department of Pathophysiology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, 510515 China
| | - Xuwen Zhao
- grid.284723.80000 0000 8877 7471Guangdong Provincial Key Laboratory of Proteomics, State Key Laboratory of Organ Failure Research, Department of Pathophysiology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, 510515 China
| | - Liyong Zhang
- grid.21925.3d0000 0004 1936 9000Department of Surgery, University of Pittsburgh School of Medicine, Pittsburgh, PA 15213 USA
| | - Yongqiang Deng
- grid.284723.80000 0000 8877 7471Guangdong Provincial Key Laboratory of Proteomics, State Key Laboratory of Organ Failure Research, Department of Pathophysiology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, 510515 China
| | - Timothy R. Billiar
- grid.21925.3d0000 0004 1936 9000Department of Surgery, University of Pittsburgh School of Medicine, Pittsburgh, PA 15213 USA
| | - Yong Jiang
- grid.284723.80000 0000 8877 7471Guangdong Provincial Key Laboratory of Proteomics, State Key Laboratory of Organ Failure Research, Department of Pathophysiology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, 510515 China
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20
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Nuclear Alarmin Cytokines in Inflammation. J Immunol Res 2020; 2020:7206451. [PMID: 33344656 PMCID: PMC7732391 DOI: 10.1155/2020/7206451] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2020] [Revised: 10/25/2020] [Accepted: 10/29/2020] [Indexed: 12/11/2022] Open
Abstract
Pathogen-associated molecular patterns (PAMPs) are some nonspecific and highly conserved molecular structures of exogenous specific microbial pathogens, whose products can be recognized by pattern recognition receptor (PRR) on innate immune cells and induce an inflammatory response. Under physiological stress, activated or damaged cells might release some endogenous proteins that can also bind to PRR and cause a harmful aseptic inflammatory response. These endogenous proteins were named damage-associated molecular patterns (DAMPs) or alarmins. Indeed, alarmins can also play a beneficial role in the tissue repair in certain environments. Besides, some alarmin cytokines have been reported to have both nuclear and extracellular effects. This group of proteins includes high-mobility group box-1 protein (HMGB1), interleukin (IL)-33, IL-1α, IL-1F7b, and IL-16. In this article, we review the involvement of nuclear alarmins such as HMGB1, IL-33, and IL-1α under physiological state or stress state and suggest a novel activity of these molecules as central initiators in the development of sterile inflammation.
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21
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Prantner D, Nallar S, Vogel SN. The role of RAGE in host pathology and crosstalk between RAGE and TLR4 in innate immune signal transduction pathways. FASEB J 2020; 34:15659-15674. [PMID: 33131091 DOI: 10.1096/fj.202002136r] [Citation(s) in RCA: 46] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2020] [Revised: 10/07/2020] [Accepted: 10/13/2020] [Indexed: 12/15/2022]
Abstract
Although the innate immune receptor protein, Receptor for Advanced Glycation End products (RAGE), has been extensively studied, there has been renewed interest in RAGE for its potential role in sepsis, along with a host of other inflammatory diseases of chronic, noninfectious origin. In contrast to other innate immune receptors, for example, Toll-like receptors (TLRs), that recognize ligands derived from pathogenic organisms that are collectively known as "pathogen-associated molecular patterns" (PAMPs) or host-derived "damage-associated molecular patterns" (DAMPs), RAGE has been shown to recognize a broad collection of DAMPs exclusively. Historically, these DAMPs have been shown to be pro-inflammatory in nature. Early studies indicated that the adaptor molecule, MyD88, might be important for this change. More recent studies have explored further the mechanisms underlying this inflammatory change. Overall, the newer results have shown that there is extensive crosstalk between RAGE and TLRs. The three canonical RAGE ligands, Advanced Glycation End products (AGEs), HMGB1, and S100 proteins, have all been shown to activate both TLRs and RAGE to varying degrees in order to induce inflammation in in vitro models. As with any field that delves deeply into innate signaling, obstacles of reagent purity may be a cause of some of the discrepancies in the literature, and we have found that commercial antibodies that have been widely used exhibit a high degree of nonspecificity. Nonetheless, the weight of published evidence has led us to speculate that RAGE may be physically interacting with TLRs on the cell surface to elicit inflammation via MyD88-dependent signaling.
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Affiliation(s)
- Daniel Prantner
- Department of Microbiology and Immunology, School of Medicine, University of Maryland, Baltimore, MD, USA
| | - Shreeram Nallar
- Institute of Human Virology, School of Medicine, University of Maryland, Baltimore, MD, USA
| | - Stefanie N Vogel
- Department of Microbiology and Immunology, School of Medicine, University of Maryland, Baltimore, MD, USA
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22
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Brown R, McKelvey MC, Ryan S, Creane S, Linden D, Kidney JC, McAuley DF, Taggart CC, Weldon S. The Impact of Aging in Acute Respiratory Distress Syndrome: A Clinical and Mechanistic Overview. Front Med (Lausanne) 2020; 7:589553. [PMID: 33195353 PMCID: PMC7649269 DOI: 10.3389/fmed.2020.589553] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Accepted: 10/01/2020] [Indexed: 12/27/2022] Open
Abstract
Acute respiratory distress syndrome (ARDS) is associated with increased morbidity and mortality in the elderly population (≥65 years of age). Additionally, age is widely reported as a risk factor for the development of ARDS. However, the underlying pathophysiological mechanisms behind the increased risk of developing, and increased severity of, ARDS in the elderly population are not fully understood. This is compounded by the significant heterogeneity observed in patients with ARDS. With an aging population worldwide, a better understanding of these mechanisms could facilitate the development of therapies to improve outcomes in this population. In this review, the current clinical evidence of age as a risk factor and prognostic indicator in ARDS and the potential underlying mechanisms that may contribute to these factors are outlined. In addition, research on age-dependent treatment options and biomarkers, as well as future prospects for targeting these underlying mechanisms, are discussed.
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Affiliation(s)
- Ryan Brown
- Airway Innate Immunity Research (AiiR) Group, Wellcome-Wolfson Institute for Experimental Medicine, School of Medicine, Dentistry and Biomedical Sciences, Queen's University Belfast, Belfast, United Kingdom
| | - Michael C McKelvey
- Airway Innate Immunity Research (AiiR) Group, Wellcome-Wolfson Institute for Experimental Medicine, School of Medicine, Dentistry and Biomedical Sciences, Queen's University Belfast, Belfast, United Kingdom
| | - Sinéad Ryan
- Airway Innate Immunity Research (AiiR) Group, Wellcome-Wolfson Institute for Experimental Medicine, School of Medicine, Dentistry and Biomedical Sciences, Queen's University Belfast, Belfast, United Kingdom
| | - Shannice Creane
- Airway Innate Immunity Research (AiiR) Group, Wellcome-Wolfson Institute for Experimental Medicine, School of Medicine, Dentistry and Biomedical Sciences, Queen's University Belfast, Belfast, United Kingdom
| | - Dermot Linden
- Airway Innate Immunity Research (AiiR) Group, Wellcome-Wolfson Institute for Experimental Medicine, School of Medicine, Dentistry and Biomedical Sciences, Queen's University Belfast, Belfast, United Kingdom
| | - Joseph C Kidney
- Department of Respiratory Medicine, Mater Hospital Belfast, Belfast, United Kingdom
| | - Daniel F McAuley
- Wellcome-Wolfson Institute for Experimental Medicine, School of Medicine, Dentistry and Biomedical Sciences, Queens University Belfast, Belfast, United Kingdom
| | - Clifford C Taggart
- Airway Innate Immunity Research (AiiR) Group, Wellcome-Wolfson Institute for Experimental Medicine, School of Medicine, Dentistry and Biomedical Sciences, Queen's University Belfast, Belfast, United Kingdom
| | - Sinéad Weldon
- Airway Innate Immunity Research (AiiR) Group, Wellcome-Wolfson Institute for Experimental Medicine, School of Medicine, Dentistry and Biomedical Sciences, Queen's University Belfast, Belfast, United Kingdom
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23
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Swami P, Thiyagarajan S, Vidger A, Indurthi VSK, Vetter SW, Leclerc E. RAGE Up-Regulation Differently Affects Cell Proliferation and Migration in Pancreatic Cancer Cells. Int J Mol Sci 2020; 21:E7723. [PMID: 33086527 PMCID: PMC7589276 DOI: 10.3390/ijms21207723] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2020] [Revised: 10/15/2020] [Accepted: 10/15/2020] [Indexed: 12/16/2022] Open
Abstract
The receptor for advanced glycation end products (RAGE) contributes to many cellular aspects of pancreatic cancer including cell proliferation, migration, and survival. Studies have shown that RAGE activation by its ligands promotes pancreatic tumor growth by stimulating both cell proliferation and migration. In this study, we investigated the effect of RAGE up-regulation on the proliferation and migration of the human pancreatic cancer Panc-1 cell-line. We show that moderate overexpression of RAGE in Panc-1 cells results in increased cell proliferation, but decreased cell migration. The observed cellular changes were confirmed to be RAGE-specific and reversible by using RAGE-specific siRNAs and the small molecule RAGE inhibitor FPS-ZM1. At the molecular level, we show that RAGE up-regulation was associated with decreased activity of FAK, Akt, Erk1/2, and NF-κB signaling pathways and greatly reduced levels of α2 and β1 integrin expression, which is in agreement with the observed decreases in cell migration. We also demonstrate that RAGE up-regulation changes the expression of key molecular markers of epithelial-to-mesenchymal transition (EMT). Our results suggest that in the absence of stimulation by external ligands, RAGE up-regulation can differently modulate cell proliferation and migration in pancreatic cancer cells and regulates partly EMT.
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Affiliation(s)
| | | | | | | | | | - Estelle Leclerc
- Department of Pharmaceutical Sciences, College of Health Professions, North Dakota State University, Fargo, ND 58105, USA; (P.S.); (S.T.); (A.V.); (V.S.K.I.); (S.W.V.)
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24
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Watanabe M, Toyomura T, Tomiyama M, Wake H, Liu K, Teshigawara K, Takahashi H, Nishibori M, Mori S. Advanced glycation end products (AGEs) synergistically potentiated the proinflammatory action of lipopolysaccharide (LPS) and high mobility group box-1 (HMGB1) through their direct interactions. Mol Biol Rep 2020; 47:7153-7159. [PMID: 32885364 DOI: 10.1007/s11033-020-05783-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2020] [Revised: 08/10/2020] [Accepted: 08/28/2020] [Indexed: 10/23/2022]
Abstract
Previously, we found that advanced glycation endproducts (AGEs) directly interact with tumor necrosis factor (TNF)-like weak inducer of apoptosis, a cytokine that controls inflammation, and that this interaction inhibited its action. This finding raised the novel possibility that AGEs alter the function of other cytokines through direct interaction. To investigate this possibility, we performed comprehensive screening for candidates that interacted with AGEs using protein array analysis. The array analysis revealed that high mobility group box-1 (HMGB1) had a markedly high affinity for AGEs. HMGB1 is a representative proinflammatory damage-associated molecular pattern molecule, and is reported to interact with lipopolysaccharide (LPS) directly to exert its inflammatory function. When LPS, HMGB1, and AGEs were mixed, the mobility of HMGB1 had shifted significantly in native PAGE, suggesting that these three molecules formed a triplet complex. The addition of AGEs to the LPS-HMGB1 mixture synergistically potentiated LPS-HMGB1-stimulated TNF-α mRNA expression in macrophage-like RAW264.7 cells. In addition, using receptor knockout clones, the increased proinflammatory response by LPS-HMGB1-AGEs complex was demonstrated to be mediated via Toll-like receptor 4 and receptor for AGEs. Taken together, this study suggested that AGEs carry out their pathophysiological roles by potentiating the LPS-HMGB1-stimulated proinflammatory response through direct interactions.
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Affiliation(s)
- Masahiro Watanabe
- Department of Pharmacology, School of Pharmacy, Shujitsu University, 1-6-1 Nishigawara, Naka-Ku, 703-8516, Okayama, Japan
| | - Takao Toyomura
- Department of Pharmacology, School of Pharmacy, Shujitsu University, 1-6-1 Nishigawara, Naka-Ku, 703-8516, Okayama, Japan
| | - Mayuko Tomiyama
- Department of Pharmacology, School of Pharmacy, Shujitsu University, 1-6-1 Nishigawara, Naka-Ku, 703-8516, Okayama, Japan
| | - Hidenori Wake
- Department of Pharmacology, Dentistry, and Pharmaceutical Sciences, Okayama University Graduate School of Medicine, 2-5-1 Shikata-cho, 700-8558, Okayama, Japan
| | - Keyue Liu
- Department of Pharmacology, Dentistry, and Pharmaceutical Sciences, Okayama University Graduate School of Medicine, 2-5-1 Shikata-cho, 700-8558, Okayama, Japan
| | - Kiyoshi Teshigawara
- Department of Pharmacology, Dentistry, and Pharmaceutical Sciences, Okayama University Graduate School of Medicine, 2-5-1 Shikata-cho, 700-8558, Okayama, Japan
| | - Hideo Takahashi
- Department of Pharmacology, Faculty of Medicine, Kindai University, 377-2 Ohno-Higashi, 589-8511, Osaka-Sayama, Japan
| | - Masahiro Nishibori
- Department of Pharmacology, Dentistry, and Pharmaceutical Sciences, Okayama University Graduate School of Medicine, 2-5-1 Shikata-cho, 700-8558, Okayama, Japan
| | - Shuji Mori
- Department of Pharmacology, School of Pharmacy, Shujitsu University, 1-6-1 Nishigawara, Naka-Ku, 703-8516, Okayama, Japan.
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25
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Chiappalupi S, Sorci G, Vukasinovic A, Salvadori L, Sagheddu R, Coletti D, Renga G, Romani L, Donato R, Riuzzi F. Targeting RAGE prevents muscle wasting and prolongs survival in cancer cachexia. J Cachexia Sarcopenia Muscle 2020; 11:929-946. [PMID: 32159297 PMCID: PMC7432590 DOI: 10.1002/jcsm.12561] [Citation(s) in RCA: 63] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/23/2019] [Revised: 01/31/2020] [Accepted: 02/09/2020] [Indexed: 12/17/2022] Open
Abstract
BACKGROUND Cachexia, a multifactorial syndrome affecting more than 50% of patients with advanced cancer and responsible for ~20% of cancer-associated deaths, is still a poorly understood process without a standard cure available. Skeletal muscle atrophy caused by systemic inflammation is a major clinical feature of cachexia, leading to weight loss, dampening patients' quality of life, and reducing patients' response to anticancer therapy. RAGE (receptor for advanced glycation end-products) is a multiligand receptor of the immunoglobulin superfamily and a mediator of muscle regeneration, inflammation, and cancer. METHODS By using murine models consisting in the injection of colon 26 murine adenocarcinoma (C26-ADK) or Lewis lung carcinoma (LLC) cells in BALB/c and C57BL/6 or Ager-/- (RAGE-null) mice, respectively, we investigated the involvement of RAGE signalling in the main features of cancer cachexia, including the inflammatory state. In vitro experiments were performed using myotubes derived from C2C12 myoblasts or primary myoblasts isolated from C57BL/6 wild type and Ager-/- mice treated with the RAGE ligand, S100B (S100 calcium-binding protein B), TNF (tumor necrosis factor)α±IFN (interferon) γ, and tumour cell- or masses-conditioned media to analyse hallmarks of muscle atrophy. Finally, muscles of wild type and Ager-/- mice were injected with TNFα/IFNγ or S100B in a tumour-free environment. RESULTS We demonstrate that RAGE is determinant to activate signalling pathways leading to muscle protein degradation in the presence of proinflammatory cytokines and/or tumour-derived cachexia-inducing factors. We identify the RAGE ligand, S100B, as a novel factor able to induce muscle atrophy per se via a p38 MAPK (p38 mitogen-activated protein kinase)/myogenin axis and STAT3 (signal transducer and activator of transcription 3)-dependent MyoD (myoblast determination protein 1) degradation. Lastly, we found that in cancer conditions, an increase in serum levels of tumour-derived S100B and HMGB1 (high mobility group box 1) occurs leading to chronic activation/overexpression of RAGE, which induces hallmarks of cancer cachexia (i.e. muscle wasting, systemic inflammation, and release of tumour-derived pro-cachectic factors). Absence of RAGE in mice translates into reduced serum levels of cachexia-inducing factors, delayed loss of muscle mass and strength, reduced tumour progression, and increased survival. CONCLUSIONS RAGE is a molecular determinant in inducing the hallmarks of cancer cachexia, and molecular targeting of RAGE might represent a therapeutic strategy to prevent or counteract the cachectic syndrome.
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Affiliation(s)
- Sara Chiappalupi
- Department of Experimental Medicine, University of Perugia, Perugia, Italy.,Interuniversity Institute of Myology, Perugia, Italy
| | - Guglielmo Sorci
- Department of Experimental Medicine, University of Perugia, Perugia, Italy.,Interuniversity Institute of Myology, Perugia, Italy.,Centro Universitario di Ricerca sulla Genomica Funzionale, University of Perugia, Perugia, Italy
| | - Aleksandra Vukasinovic
- Department of Experimental Medicine, University of Perugia, Perugia, Italy.,Interuniversity Institute of Myology, Perugia, Italy
| | - Laura Salvadori
- Department of Experimental Medicine, University of Perugia, Perugia, Italy.,Interuniversity Institute of Myology, Perugia, Italy
| | - Roberta Sagheddu
- Department of Experimental Medicine, University of Perugia, Perugia, Italy.,Interuniversity Institute of Myology, Perugia, Italy
| | - Dario Coletti
- Department of Anatomical, Histological, Forensic and Orthopedic Sciences, Sapienza University of Rome, Rome, Italy.,CNRS UMR 8256, INSERM ERL U1164, Biological Adaptation and Aging B2A, Sorbonne Université, Paris, France
| | - Giorgia Renga
- Department of Experimental Medicine, University of Perugia, Perugia, Italy
| | - Luigina Romani
- Department of Experimental Medicine, University of Perugia, Perugia, Italy.,Centro Universitario di Ricerca sulla Genomica Funzionale, University of Perugia, Perugia, Italy
| | - Rosario Donato
- Department of Experimental Medicine, University of Perugia, Perugia, Italy
| | - Francesca Riuzzi
- Department of Experimental Medicine, University of Perugia, Perugia, Italy.,Interuniversity Institute of Myology, Perugia, Italy
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26
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Senatus L, López-Díez R, Egaña-Gorroño L, Liu J, Hu J, Daffu G, Li Q, Rahman K, Vengrenyuk Y, Barrett TJ, Dewan MZ, Guo L, Fuller D, Finn AV, Virmani R, Li H, Friedman RA, Fisher EA, Ramasamy R, Schmidt AM. RAGE impairs murine diabetic atherosclerosis regression and implicates IRF7 in macrophage inflammation and cholesterol metabolism. JCI Insight 2020; 5:137289. [PMID: 32641587 PMCID: PMC7406264 DOI: 10.1172/jci.insight.137289] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Accepted: 05/21/2020] [Indexed: 12/27/2022] Open
Abstract
Despite advances in lipid-lowering therapies, people with diabetes continue to experience more limited cardiovascular benefits. In diabetes, hyperglycemia sustains inflammation and preempts vascular repair. We tested the hypothesis that the receptor for advanced glycation end-products (RAGE) contributes to these maladaptive processes. We report that transplantation of aortic arches from diabetic, Western diet-fed Ldlr-/- mice into diabetic Ager-/- (Ager, the gene encoding RAGE) versus WT diabetic recipient mice accelerated regression of atherosclerosis. RNA-sequencing experiments traced RAGE-dependent mechanisms principally to the recipient macrophages and linked RAGE to interferon signaling. Specifically, deletion of Ager in the regressing diabetic plaques downregulated interferon regulatory factor 7 (Irf7) in macrophages. Immunohistochemistry studies colocalized IRF7 and macrophages in both murine and human atherosclerotic plaques. In bone marrow-derived macrophages (BMDMs), RAGE ligands upregulated expression of Irf7, and in BMDMs immersed in a cholesterol-rich environment, knockdown of Irf7 triggered a switch from pro- to antiinflammatory gene expression and regulated a host of genes linked to cholesterol efflux and homeostasis. Collectively, this work adds a new dimension to the immunometabolic sphere of perturbations that impair regression of established diabetic atherosclerosis and suggests that targeting RAGE and IRF7 may facilitate vascular repair in diabetes.
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Affiliation(s)
- Laura Senatus
- Diabetes Research Program, Division of Endocrinology, Diabetes and Metabolism, Department of Medicine
| | - Raquel López-Díez
- Diabetes Research Program, Division of Endocrinology, Diabetes and Metabolism, Department of Medicine
| | - Lander Egaña-Gorroño
- Diabetes Research Program, Division of Endocrinology, Diabetes and Metabolism, Department of Medicine
| | - Jianhua Liu
- Marc and Ruti Bell Program in Vascular Biology, Leon H. Charney Division of Cardiology, Department of Medicine
| | - Jiyuan Hu
- Division of Biostatistics, Department of Population Health, and Department of Environmental Medicine, and
| | - Gurdip Daffu
- Diabetes Research Program, Division of Endocrinology, Diabetes and Metabolism, Department of Medicine
| | - Qing Li
- Diabetes Research Program, Division of Endocrinology, Diabetes and Metabolism, Department of Medicine
| | - Karishma Rahman
- Marc and Ruti Bell Program in Vascular Biology, Leon H. Charney Division of Cardiology, Department of Medicine
| | - Yuliya Vengrenyuk
- Marc and Ruti Bell Program in Vascular Biology, Leon H. Charney Division of Cardiology, Department of Medicine
| | - Tessa J. Barrett
- Marc and Ruti Bell Program in Vascular Biology, Leon H. Charney Division of Cardiology, Department of Medicine
| | - M. Zahidunnabi Dewan
- Experimental Pathology Research Laboratory, Department of Pathology, New York University (NYU) Langone Medical Center, New York, New York, USA
| | - Liang Guo
- CVPath Institute, Gaithersburg, Maryland, USA
| | | | | | | | - Huilin Li
- Division of Biostatistics, Department of Population Health, and Department of Environmental Medicine, and
| | - Richard A. Friedman
- Biomedical Informatics Shared Resource, Herbert Irving Comprehensive Cancer Center, and Department of Biomedical Informatics, Columbia University Irving Medical Center, New York, New York, USA
| | - Edward A. Fisher
- Marc and Ruti Bell Program in Vascular Biology, Leon H. Charney Division of Cardiology, Department of Medicine
| | - Ravichandran Ramasamy
- Diabetes Research Program, Division of Endocrinology, Diabetes and Metabolism, Department of Medicine
| | - Ann Marie Schmidt
- Diabetes Research Program, Division of Endocrinology, Diabetes and Metabolism, Department of Medicine
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27
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Weinhage T, Wirth T, Schütz P, Becker P, Lueken A, Skryabin BV, Wittkowski H, Foell D. The Receptor for Advanced Glycation Endproducts (RAGE) Contributes to Severe Inflammatory Liver Injury in Mice. Front Immunol 2020; 11:1157. [PMID: 32670276 PMCID: PMC7326105 DOI: 10.3389/fimmu.2020.01157] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2020] [Accepted: 05/11/2020] [Indexed: 12/24/2022] Open
Abstract
Background: The receptor for advanced glycation end products (RAGE) is a multiligand receptor involved in a number of processes and disorders. While it is known that RAGE-signaling can contribute to toxic liver damage and fibrosis, its role in acute inflammatory liver injury and septic multiorgan failure is yet undefined. We examined RAGE in lipopolysaccharide (LPS) induced acute liver injury of D-galN sensitized mice as a classical model for tumor necrosis factor alpha (TNF-α) dependent inflammatory organ damage. Methods: Mice (Rage–/– and C57BL/6) were intraperitoneally injected with D-galN (300 mg/kg) and LPS (10 μg/kg). Animals were monitored clinically, and cytokines, damage associated molecular pattern molecules (DAMPs) as well as liver enzymes were determined in serum. Liver histology, hepatic cytokines as well as RAGE mRNA expression were analyzed. Cellular activation and functionality were evaluated by flow cytometry both in bone marrow- and liver-derived cells. Results: Genetic deficiency of RAGE significantly reduced the mortality of mice exposed to LPS/D-galN. Hepatocyte damage markers were reduced in Rage–/– mice, and liver histopathology was less severe. Rage–/– mice produced less pro-inflammatory cytokines and DAMPs in serum and liver. While immune cell functions appeared normal, TNF-α production by hepatocytes was reduced in Rage–/– mice. Conclusions: We found that RAGE deletion attenuated the expression of pro-inflammatory cytokines and DAMPs in hepatocytes without affecting cellular immune functions in the LPS/D-galN model of murine liver injury. Our data highlight the importance of tissue-specific RAGE-signaling also in acute inflammatory liver stress contributing to sepsis and multiorgan failure.
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Affiliation(s)
- Toni Weinhage
- Department of Pediatric Rheumatology and Immunology, University of Münster, Münster, Germany
| | - Timo Wirth
- Department of Neurology With Institute of Translational Neurology, University Hospital Münster, Münster, Germany
| | - Paula Schütz
- Department of Pediatric Rheumatology and Immunology, University of Münster, Münster, Germany
| | - Philipp Becker
- Department of Pediatric Rheumatology and Immunology, University of Münster, Münster, Germany
| | - Aloys Lueken
- Department of Pediatric Rheumatology and Immunology, University of Münster, Münster, Germany
| | - Boris V Skryabin
- Core Facility of Transgenic Animal and Genetic Engineering Models (TRAM), University of Münster, Münster, Germany
| | - Helmut Wittkowski
- Department of Pediatric Rheumatology and Immunology, University of Münster, Münster, Germany
| | - Dirk Foell
- Department of Pediatric Rheumatology and Immunology, University of Münster, Münster, Germany
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28
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Abstract
Sepsis remains medically challenging, with high morbidity and mortality. A novel intervention is urgently needed in the absence of specific, targeted therapy. Neutrophils act as double-edged swords in sepsis; they can help to eradicate microbes, but they also contribute to tissue injury. β2 integrins are critical adhesion molecules that regulate a number of neutrophil functions. β2 integrins consist of four members, namely, αLβ2, αMβ2, αXβ2, and αDβ2. Here, we review the role of each β2 integrin in neutrophils and sepsis and consider future direction for therapeutic intervention.
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29
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Haraguchi R, Kohara Y, Matsubayashi K, Kitazawa R, Kitazawa S. New Insights into the Pathogenesis of Diabetic Nephropathy: Proximal Renal Tubules Are Primary Target of Oxidative Stress in Diabetic Kidney. Acta Histochem Cytochem 2020; 53:21-31. [PMID: 32410750 PMCID: PMC7212204 DOI: 10.1267/ahc.20008] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2020] [Accepted: 04/09/2020] [Indexed: 12/15/2022] Open
Abstract
Diabetic nephropathy is a major source of end-stage renal failure, affecting about one-third cases of diabetes mellitus. It has long been accepted that diabetic nephropathy is mainly characterized by glomerular defects, while clinical observations have implied that renal tubular damage is closely linked to kidney dysfunction at the early stages of diabetic nephropathy. In this study, we conducted pathohistological analyses focusing on renal tubular lesions in the early-stage diabetic kidney with the use of a streptozotocin (STZ)-induced diabetes mellitus mouse model. The results revealed that histological alterations in renal tubules, shown by a vacuolar nucleic structure, accumulations of PAS-positive substance, and accelerated restoration stress, occur initially without the presence of glomerular lesions in the early-stage diabetic kidney, and that these tubular defects are localized mainly in proximal renal tubules. Moreover, enhanced expression of RAGE, suggesting an aberrant activation of AGEs-RAGE signaling pathway, and accumulation of oxidative modified mitochondria through the impaired autophagy/lysosome system, were also seen in the damaged diabetic proximal renal tubules. Our findings indicate that proximal tubular defects are the initial pathological events increasingly linked to the progression of diabetic nephropathy, and that controlling renal tubular damage could be an effective therapeutic strategy for the clinical treatment of diabetic nephropathy.
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Affiliation(s)
- Ryuma Haraguchi
- Department of Molecular Pathology, Ehime University Graduate School of Medicine
| | - Yukihiro Kohara
- Department of Molecular Pathology, Ehime University Graduate School of Medicine
| | - Kanako Matsubayashi
- Department of Molecular Pathology, Ehime University Graduate School of Medicine
| | - Riko Kitazawa
- Department of Molecular Pathology, Ehime University Graduate School of Medicine
- Department of Diagnostic Pathology, Ehime University Hospital
| | - Sohei Kitazawa
- Department of Molecular Pathology, Ehime University Graduate School of Medicine
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30
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Li R, Song Y, Zhou L, Li W, Zhu X. Downregulation of RAGE Inhibits Cell Proliferation and Induces Apoptosis via Regulation of PI3K/AKT Pathway in Cervical Squamous Cell Carcinoma. Onco Targets Ther 2020; 13:2385-2397. [PMID: 32256089 PMCID: PMC7093096 DOI: 10.2147/ott.s240378] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2019] [Accepted: 03/11/2020] [Indexed: 12/15/2022] Open
Abstract
Aim The receptor for advanced glycation endproducts (RAGE) expression has been reported to be implicated with cancer development. In this study, the role of RAGE in the regulation of cervical squamous cancer cell proliferation, apoptosis and the mechanism of RAGE involved in the biological behaviors were explored. Methods The RAGE expression was overexpressed or downregulated by lentivirus transfection. The effect of RAGE expression on cell proliferation was explored by CCK-8, MTT, and BrdU assay, and the effect of RAGE on tumor development was confirmed by the xenograft mouse model along with the immunohistochemistry stain of proliferating cell nuclear antigen (PCNA). Apoptosis was investigated by flow cytometry and TUNEL assay. Western blotting was performed to investigate the expression of possible proteins, including Bax, Bcl-2, PI3K, p-PI3K, AKT, and p-AKT. Results Overexpression of RAGE promoted proliferation of cervical squamous cancer cell and increased PCNA expression. In the meantime, RAGE overexpression inhibited cell apoptosis along with a decrease of Bax/Bcl-2 ratio, and induction of PI3K/AKT activation. The in vivo results showed that overexpression of RAGE enhanced tumor growth. Conversely, knockdown of RAGE exhibited opposed effects on cervical cancer cells and xenograft mouse model. Furthermore, RAGE inhibitor FPS-ZM1 effectively inhibited SiHa cell viability and PCNA expression, and increased cell apoptosis and Bax/Bcl-2 ratio. Moreover, PI3K inhibitor LY294002 effectively inhibited activation of PI3K and AKT, and further repressed RAGE overexpression-induced cell proliferation and apoptosis inhibition. Conclusion RAGE promotes the growth ability of cervical squamous cell carcinoma by inducing PCNA expression and inhibiting cell apoptosis via inactivation of the PI3K/AKT pathway.
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Affiliation(s)
- Ruyi Li
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325027, People's Republic of China
| | - Yizuo Song
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325027, People's Republic of China
| | - Lulu Zhou
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325027, People's Republic of China
| | - Weibo Li
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325027, People's Republic of China
| | - Xueqiong Zhu
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325027, People's Republic of China
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31
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Arnold K, Xu Y, Sparkenbaugh EM, Li M, Han X, Zhang X, Xia K, Piegore M, Zhang F, Zhang X, Henderson M, Pagadala V, Su G, Tan L, Park PW, Stravitz RT, Key NS, Linhardt RJ, Pawlinski R, Xu D, Liu J. Design of anti-inflammatory heparan sulfate to protect against acetaminophen-induced acute liver failure. Sci Transl Med 2020; 12:eaav8075. [PMID: 32188725 PMCID: PMC7315409 DOI: 10.1126/scitranslmed.aav8075] [Citation(s) in RCA: 53] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2018] [Revised: 11/05/2019] [Accepted: 01/16/2020] [Indexed: 12/14/2022]
Abstract
Acetaminophen/paracetamol (APAP) overdose is the leading cause of drug-induced acute liver failure (ALF) in the United States and Europe. The progression of the disease is attributed to sterile inflammation induced by the release of high mobility group box 1 (HMGB1) and the interaction with receptor for advanced glycation end products (RAGE). A specific, effective, and safe approach to neutralize the proinflammatory activity of HMGB1 is highly desirable. Here, we found that a heparan sulfate (HS) octadecasaccharide (18-mer-HP or hepatoprotective 18-mer) displays potent hepatoprotection by targeting the HMGB1/RAGE axis. Endogenous HS proteoglycan, syndecan-1, is shed in response to APAP overdose in mice and humans. Furthermore, purified syndecan-1, but not syndecan-1 core protein, binds to HMGB1, suggesting that HMGB1 binds to HS polysaccharide side chains of syndecan-1. Last, we compared the protection effect between 18-mer-HP and N-acetyl cysteine, which is the standard of care to treat APAP overdose. We demonstrated that 18-mer-HP administered 3 hours after a lethal dose of APAP is fully protective; however, the treatment of N-acetyl cysteine loses protection. Therefore, 18-mer-HP may offer a potential therapeutic advantage over N-acetyl cysteine for late-presenting patients. Synthetic HS provides a potential approach for the treatment of APAP-induced ALF.
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Affiliation(s)
- Katelyn Arnold
- Division of Chemical Biology and Medicinal Chemistry, Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, NC 27599, USA
| | - Yongmei Xu
- Division of Chemical Biology and Medicinal Chemistry, Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, NC 27599, USA
| | - Erica M Sparkenbaugh
- Division of Hematology/Oncology, Department of Medicine, University of North Carolina, Chapel Hill, NC 27599, USA
- UNC Blood Research Center, University of North Carolina, Chapel Hill, NC 25799, USA
| | - Miaomiao Li
- Department of Oral Biology, School of Dental Medicine, State University of New York at Buffalo, Buffalo, NY 14214, USA
| | - Xiaorui Han
- Department of Chemistry and Chemical Biology, Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, NY 12180, USA
| | - Xing Zhang
- Department of Chemistry and Chemical Biology, Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, NY 12180, USA
| | - Ke Xia
- Department of Chemistry and Chemical Biology, Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, NY 12180, USA
| | - Mark Piegore
- Division of Hematology/Oncology, Department of Medicine, University of North Carolina, Chapel Hill, NC 27599, USA
| | - Fuming Zhang
- Department of Chemistry and Chemical Biology, Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, NY 12180, USA
| | - Xiaoxiao Zhang
- Department of Oral Biology, School of Dental Medicine, State University of New York at Buffalo, Buffalo, NY 14214, USA
| | - Mike Henderson
- Division of Hematology/Oncology, Department of Medicine, University of North Carolina, Chapel Hill, NC 27599, USA
- UNC Blood Research Center, University of North Carolina, Chapel Hill, NC 25799, USA
| | | | - Guowei Su
- Division of Chemical Biology and Medicinal Chemistry, Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, NC 27599, USA
| | - Lisi Tan
- Department of Oral Biology, School of Dental Medicine, State University of New York at Buffalo, Buffalo, NY 14214, USA
- Department of Periodontics, School of Stomatology, China Medical University, Shenyang, Liaoning 110002, China
| | - Pyong Woo Park
- Division of Respiratory Diseases, Boston Children's Hospital, Harvard Medical School, Boston, MA 02115, USA; Division of Newborn Medicine, Boston Children's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Richard T Stravitz
- Hume-Lee Transplant Center of Virginia Commonwealth University, Richmond, VA 23219, USA
| | - Nigel S Key
- Division of Hematology/Oncology, Department of Medicine, University of North Carolina, Chapel Hill, NC 27599, USA
- UNC Blood Research Center, University of North Carolina, Chapel Hill, NC 25799, USA
| | - Robert J Linhardt
- Department of Chemistry and Chemical Biology, Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, NY 12180, USA
| | - Rafal Pawlinski
- Division of Hematology/Oncology, Department of Medicine, University of North Carolina, Chapel Hill, NC 27599, USA
- UNC Blood Research Center, University of North Carolina, Chapel Hill, NC 25799, USA
| | - Ding Xu
- Department of Oral Biology, School of Dental Medicine, State University of New York at Buffalo, Buffalo, NY 14214, USA.
| | - Jian Liu
- Division of Chemical Biology and Medicinal Chemistry, Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, NC 27599, USA.
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Egaña-Gorroño L, López-Díez R, Yepuri G, Ramirez LS, Reverdatto S, Gugger PF, Shekhtman A, Ramasamy R, Schmidt AM. Receptor for Advanced Glycation End Products (RAGE) and Mechanisms and Therapeutic Opportunities in Diabetes and Cardiovascular Disease: Insights From Human Subjects and Animal Models. Front Cardiovasc Med 2020; 7:37. [PMID: 32211423 PMCID: PMC7076074 DOI: 10.3389/fcvm.2020.00037] [Citation(s) in RCA: 108] [Impact Index Per Article: 27.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2019] [Accepted: 02/25/2020] [Indexed: 12/21/2022] Open
Abstract
Obesity and diabetes are leading causes of cardiovascular morbidity and mortality. Although extensive strides have been made in the treatments for non-diabetic atherosclerosis and its complications, for patients with diabetes, these therapies provide less benefit for protection from cardiovascular disease (CVD). These considerations spur the concept that diabetes-specific, disease-modifying therapies are essential to identify, especially as the epidemics of obesity and diabetes continue to expand. Hence, as hyperglycemia is a defining feature of diabetes, it is logical to probe the impact of the specific consequences of hyperglycemia on the vessel wall, immune cell perturbation, and endothelial dysfunction-all harbingers to the development of CVD. In this context, high levels of blood glucose stimulate the formation of the irreversible advanced glycation end products, the products of non-enzymatic glycation and oxidation of proteins and lipids. AGEs accumulate in diabetic circulation and tissues and the interaction of AGEs with their chief cellular receptor, receptor for AGE or RAGE, contributes to vascular and immune cell perturbation. The cytoplasmic domain of RAGE lacks endogenous kinase activity; the discovery that this intracellular domain of RAGE binds to the formin, DIAPH1, and that DIAPH1 is essential for RAGE ligand-mediated signal transduction, identifies the specific cellular means by which RAGE functions and highlights a new target for therapeutic interruption of RAGE signaling. In human subjects, prominent signals for RAGE activity include the presence and levels of two forms of soluble RAGE, sRAGE, and endogenous secretory (es) RAGE. Further, genetic studies have revealed single nucleotide polymorphisms (SNPs) of the AGER gene (AGER is the gene encoding RAGE) and DIAPH1, which display associations with CVD. This Review presents current knowledge regarding the roles for RAGE and DIAPH1 in the causes and consequences of diabetes, from obesity to CVD. Studies both from human subjects and animal models are presented to highlight the breadth of evidence linking RAGE and DIAPH1 to the cardiovascular consequences of these metabolic disorders.
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Affiliation(s)
- Lander Egaña-Gorroño
- Diabetes Research Program, Division of Endocrinology, Diabetes and Metabolism, Department of Medicine, New York University School of Medicine, New York, NY, United States
| | - Raquel López-Díez
- Diabetes Research Program, Division of Endocrinology, Diabetes and Metabolism, Department of Medicine, New York University School of Medicine, New York, NY, United States
| | - Gautham Yepuri
- Diabetes Research Program, Division of Endocrinology, Diabetes and Metabolism, Department of Medicine, New York University School of Medicine, New York, NY, United States
| | - Lisa S Ramirez
- Department of Chemistry, University of Albany, State University of New York, Albany, NY, United States
| | - Sergey Reverdatto
- Department of Chemistry, University of Albany, State University of New York, Albany, NY, United States
| | - Paul F Gugger
- Diabetes Research Program, Division of Endocrinology, Diabetes and Metabolism, Department of Medicine, New York University School of Medicine, New York, NY, United States
| | - Alexander Shekhtman
- Department of Chemistry, University of Albany, State University of New York, Albany, NY, United States
| | - Ravichandran Ramasamy
- Diabetes Research Program, Division of Endocrinology, Diabetes and Metabolism, Department of Medicine, New York University School of Medicine, New York, NY, United States
| | - Ann Marie Schmidt
- Diabetes Research Program, Division of Endocrinology, Diabetes and Metabolism, Department of Medicine, New York University School of Medicine, New York, NY, United States
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Burr SD, Harmon MB, Jr JAS. The Impact of Diabetic Conditions and AGE/RAGE Signaling on Cardiac Fibroblast Migration. Front Cell Dev Biol 2020; 8:112. [PMID: 32158758 PMCID: PMC7052116 DOI: 10.3389/fcell.2020.00112] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2019] [Accepted: 02/10/2020] [Indexed: 12/14/2022] Open
Abstract
Diabetic individuals have an increased risk for developing cardiovascular disease due to stiffening of the left ventricle (LV), which is thought to occur, in part, by increased AGE/RAGE signaling inducing fibroblast differentiation. Advanced glycated end-products (AGEs) accumulate within the body over time, and under hyperglycemic conditions, the formation and accumulation of AGEs is accelerated. AGEs exert their effect by binding to their receptor (RAGE) and can induce myofibroblast differentiation, leading to increased cell migration. Previous studies have focused on fibroblast migration during wound healing, in which diabetics have impaired fibroblast migration compared to healthy individuals. However, the impact of diabetic conditions as well as AGE/RAGE signaling has not been extensively studied in cardiac fibroblasts. Therefore, the goal of this study was to determine how the AGE/RAGE signaling pathway impacts cell migration in non-diabetic and diabetic cardiac fibroblasts. Cardiac fibroblasts were isolated from non-diabetic and diabetic mice with and without functional RAGE and used to perform a migration assay. Cardiac fibroblasts were plated on plastic, non-diabetic, or diabetic collagen, and when confluency was reached, a line of migration was generated by scratching the plate and followed by treatment with pharmacological agents that modify AGE/RAGE signaling. Modification of the AGE/RAGE signaling cascade was done with ERK1/2 and PKC-ζ inhibitors as well as treatment with exogenous AGEs. Diabetic fibroblasts displayed an increase in migration compared to non-diabetic fibroblasts whereas inhibiting the AGE/RAGE signaling pathway resulted in a significant increase in migration. The results indicate that the AGE/RAGE signaling cascade causes a decrease in cardiac fibroblast migration and altering the pathway will produce alterations in cardiac fibroblast migration.
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Affiliation(s)
- Stephanie D Burr
- Department of BioMolecular Sciences, School of Pharmacy, The University of Mississippi, Oxford, MS, United States
| | - Mallory B Harmon
- Department of BioMolecular Sciences, School of Pharmacy, The University of Mississippi, Oxford, MS, United States
| | - James A Stewart Jr
- Department of BioMolecular Sciences, School of Pharmacy, The University of Mississippi, Oxford, MS, United States
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Mazgaeen L, Gurung P. Recent Advances in Lipopolysaccharide Recognition Systems. Int J Mol Sci 2020; 21:ijms21020379. [PMID: 31936182 PMCID: PMC7013859 DOI: 10.3390/ijms21020379] [Citation(s) in RCA: 171] [Impact Index Per Article: 42.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2019] [Revised: 01/03/2020] [Accepted: 01/05/2020] [Indexed: 02/07/2023] Open
Abstract
Lipopolysaccharide (LPS), commonly known as endotoxin, is ubiquitous and the most-studied pathogen-associated molecular pattern. A component of Gram-negative bacteria, extracellular LPS is sensed by our immune system via the toll-like receptor (TLR)-4. Given that TLR4 is membrane bound, it recognizes LPS in the extracellular milieu or within endosomes. Whether additional sensors, if any, play a role in LPS recognition within the cytoplasm remained unknown until recently. The last decade has seen an unprecedented unfolding of TLR4-independent LPS sensing pathways. First, transient receptor potential (TRP) channels have been identified as non-TLR membrane-bound sensors of LPS and, second, caspase-4/5 (and caspase-11 in mice) have been established as the cytoplasmic sensors for LPS. Here in this review, we detail the brief history of LPS discovery, followed by the discovery of TLR4, TRP as the membrane-bound sensor, and our current understanding of caspase-4/5/11 as cytoplasmic sensors.
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Affiliation(s)
- Lalita Mazgaeen
- Inflammation Program, University of Iowa, Iowa City, IA 52242, USA;
- Department of Internal Medicine, University of Iowa, Iowa City, IA 52242, USA
- Interdisciplinary Graduate Program in Human Toxicology, University of Iowa, Iowa City, IA 52242, USA
| | - Prajwal Gurung
- Inflammation Program, University of Iowa, Iowa City, IA 52242, USA;
- Department of Internal Medicine, University of Iowa, Iowa City, IA 52242, USA
- Interdisciplinary Graduate Program in Human Toxicology, University of Iowa, Iowa City, IA 52242, USA
- Immunology Graduate Program, University of Iowa, Iowa City, IA 52242, USA
- Correspondence: ; Tel.: +1-(319)335-4536; Fax: +1-(319)335-4194
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Kumar NP, Moideen K, Nancy A, Viswanathan V, Shruthi BS, Sivakumar S, Hissar S, Kornfeld H, Babu S. Systemic RAGE ligands are upregulated in tuberculosis individuals with diabetes co-morbidity and modulated by anti-tuberculosis treatment and metformin therapy. BMC Infect Dis 2019; 19:1039. [PMID: 31818258 PMCID: PMC6902343 DOI: 10.1186/s12879-019-4648-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2019] [Accepted: 11/22/2019] [Indexed: 12/17/2022] Open
Abstract
Background Ligands of the receptor for advanced glycation end products (RAGE) are key signalling molecules in the innate immune system but their role in tuberculosis-diabetes comorbidity (TB-DM) has not been investigated. Methods We examined the systemic levels of soluble RAGE (sRAGE), advanced glycation end products (AGE), S100A12 and high mobility group box 1 (HMGB1) in participants with either TB-DM, TB, DM or healthy controls (HC). Results Systemic levels of AGE, sRAGE and S100A12 were significantly elevated in TB-DM and DM in comparison to TB and HC. During follow up, AGE, sRAGE and S100A12 remained significantly elevated in TB-DM compared to TB at 2nd month and 6th month of anti-TB treatment (ATT). RAGE ligands were increased in TB-DM individuals with bilateral and cavitary disease. sRAGE and S100A12 correlated with glycated hemoglobin levels. Within the TB-DM group, those with known diabetes (KDM) revealed significantly increased levels of AGE and sRAGE compared to newly diagnosed DM (NDM). KDM participants on metformin treatment exhibited significantly diminished levels of AGE and sRAGE in comparison to those on non-metformin regimens. Conclusions Our data demonstrate that RAGE ligand levels reflect disease severity and extent in TB-DM, distinguish KDM from NDM and are modulated by metformin therapy.
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Affiliation(s)
- Nathella Pavan Kumar
- National Institutes of Health-NIRT- International Center for Excellence in Research, No. 1 Mayor Sathyamoothy Road, Chetpet, Chennai, India.
| | - Kadar Moideen
- National Institutes of Health-NIRT- International Center for Excellence in Research, No. 1 Mayor Sathyamoothy Road, Chetpet, Chennai, India
| | - Arul Nancy
- National Institutes of Health-NIRT- International Center for Excellence in Research, No. 1 Mayor Sathyamoothy Road, Chetpet, Chennai, India.,Prof. M. Viswanathan Diabetes Research Center, Chennai, India
| | | | | | | | - Syed Hissar
- National Institute for Research in Tuberculosis, Chennai, India
| | - Hardy Kornfeld
- University of Massachusetts Medical School, Worcester, MA, USA
| | - Subash Babu
- National Institutes of Health-NIRT- International Center for Excellence in Research, No. 1 Mayor Sathyamoothy Road, Chetpet, Chennai, India.,LPD, NIAID, NIH, Bethesda, MD, USA
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Healey GD, Pan-Castillo B, Garcia-Parra J, Davies J, Roberts S, Jones E, Dhar K, Nandanan S, Tofazzal N, Piggott L, Clarkson R, Seaton G, Frostell A, Fagge T, McKee C, Margarit L, Conlan RS, Gonzalez D. Antibody drug conjugates against the receptor for advanced glycation end products (RAGE), a novel therapeutic target in endometrial cancer. J Immunother Cancer 2019; 7:280. [PMID: 31665084 PMCID: PMC6820928 DOI: 10.1186/s40425-019-0765-z] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2018] [Accepted: 10/05/2019] [Indexed: 01/22/2023] Open
Abstract
Background The treatment of endometrial cancer (EC), the most common gynecological cancer, is currently hampered by the toxicity of current cytotoxic agents, meaning novel therapeutic approaches are urgently required. Methods A cohort of 161 patients was evaluated for the expression of the receptor for advanced glycation end products (RAGE) in endometrial tissues. The present study also incorporates a variety of in vitro methodologies within multiple cell lines to evaluate RAGE expression and antibody-drug conjugate efficacy, internalisation and intercellular trafficking. Additionally, we undertook in vivo bio-distribution and toxicity evaluation to determine the suitability of our chosen therapeutic approach, together with efficacy studies in a mouse xenograft model of disease. Results We have identified an association between over-expression of the receptor for advanced glycation end products (RAGE) and EC (H-score = Healthy: 0.46, SD 0.26; Type I EC: 2.67, SD 1.39; Type II EC: 2.20, SD 1.34; ANOVA, p < 0.0001). Furthermore, increased expression was negatively correlated with patient survival (Spearman’s Rank Order Correlation: ρ = − 0.3914, p < 0.05). To exploit this association, we developed novel RAGE-targeting antibody drug conjugates (ADC) and demonstrated the efficacy of this approach. RAGE-targeting ADCs were up to 100-fold more efficacious in EC cells compared to non-malignant cells and up to 200-fold more cytotoxic than drug treatment alone. Additionally, RAGE-targeting ADCs were not toxic in an in vivo pre-clinical mouse model, and significantly reduced tumour growth in a xenograft mouse model of disease. Conclusions These data, together with important design considerations implied by the present study, suggest RAGE-ADCs could be translated to novel therapeutics for EC patients.
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Affiliation(s)
- Gareth D Healey
- Reproductive Biology and Gynaecological Oncology Group, Swansea University Medical School, Swansea University, Singleton Park, Swansea, SA2 8PP, UK
| | - Belen Pan-Castillo
- Reproductive Biology and Gynaecological Oncology Group, Swansea University Medical School, Swansea University, Singleton Park, Swansea, SA2 8PP, UK
| | - Jezabel Garcia-Parra
- Reproductive Biology and Gynaecological Oncology Group, Swansea University Medical School, Swansea University, Singleton Park, Swansea, SA2 8PP, UK
| | - Julia Davies
- Reproductive Biology and Gynaecological Oncology Group, Swansea University Medical School, Swansea University, Singleton Park, Swansea, SA2 8PP, UK
| | - Shaun Roberts
- Cellular Pathology Department, Swansea Bay University Health Board, Singleton Hospital, Sketty Lane, Swansea, SA2 8QA, UK
| | - Eilir Jones
- Cellular Pathology Department, Swansea Bay University Health Board, Singleton Hospital, Sketty Lane, Swansea, SA2 8QA, UK
| | - Kalyan Dhar
- Gynecology Oncology Department, Swansea Bay University Health Board, Singleton Hospital, Sketty Lane, Swansea, SA2 8QA, UK
| | - Sarika Nandanan
- Obstetrics & Gynecology Department Princess of Wales Hospital, Cwm Taf Morgannwg University Health Board, Coity Road, Bridgend, CF31 1RQ, UK
| | - Nasima Tofazzal
- Cellular Pathology Department, Swansea Bay University Health Board, Singleton Hospital, Sketty Lane, Swansea, SA2 8QA, UK
| | - Luke Piggott
- Welsh Cancer Research Centre, Institute of Cancer & Genetics, School of Medicine, Cardiff University, University Hospital of Wales, Heath Park, Cardiff, CF14 4XN, UK
| | - Richard Clarkson
- European Cancer Stem Cell Research Institute, School of Biosciences, Cardiff University, Hadyn Ellis Building, Maindy Road, Cathays, Cardiff, CF24 4HQ, UK
| | - Gillian Seaton
- European Cancer Stem Cell Research Institute, School of Biosciences, Cardiff University, Hadyn Ellis Building, Maindy Road, Cathays, Cardiff, CF24 4HQ, UK
| | - Asa Frostell
- GE Healthcare Bio-Sciences, SE-751 84, Uppsala, Sweden
| | - Tim Fagge
- GE Healthcare, Little Chalfont, Buckinghamshire, HP7 9NA, UK
| | - Colin McKee
- ADC Biotechnology Ltd, OpTIC Technium, Ffordd William Morgan, St Asaph Business Park, St Asaph, Denbighshire, LL17 0JD, UK
| | - Lavinia Margarit
- Reproductive Biology and Gynaecological Oncology Group, Swansea University Medical School, Swansea University, Singleton Park, Swansea, SA2 8PP, UK.,Obstetrics & Gynecology Department Princess of Wales Hospital, Cwm Taf Morgannwg University Health Board, Coity Road, Bridgend, CF31 1RQ, UK
| | - R Steven Conlan
- Reproductive Biology and Gynaecological Oncology Group, Swansea University Medical School, Swansea University, Singleton Park, Swansea, SA2 8PP, UK
| | - Deyarina Gonzalez
- Reproductive Biology and Gynaecological Oncology Group, Swansea University Medical School, Swansea University, Singleton Park, Swansea, SA2 8PP, UK.
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Chen R, Zhu S, Zeng L, Wang Q, Sheng Y, Zhou B, Tang D, Kang R. AGER-Mediated Lipid Peroxidation Drives Caspase-11 Inflammasome Activation in Sepsis. Front Immunol 2019; 10:1904. [PMID: 31440260 PMCID: PMC6694796 DOI: 10.3389/fimmu.2019.01904] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2018] [Accepted: 07/26/2019] [Indexed: 12/31/2022] Open
Abstract
Inflammasome activation can trigger an inflammatory and innate immune response through the release of cytokines and induction of pyroptosis. A dysfunctional inflammasome has been implicated in the development of human pathologies, including sepsis and septic shock. Here, we show that advanced glycosylation end-product specific receptor (AGER/RAGE) is required for caspase-11 inflammasome activation in macrophages. A nuclear damage-associated molecular pattern (nDAMP) complex, including high-mobility group box 1, histone, and DNA, can promote caspase-11-mediated gasdermin D cleavage, interleukin 1β proteolytic maturation, and lactate dehydrogenase release. The inhibition of AGER-mediated lipid peroxidation via arachidonate 5-lipoxygenase (ALOX5) limits caspase-11 inflammasome activation and pyroptosis in macrophages in response to nDAMPs or cytosolic lipopolysaccharide. Importantly, the pharmacologic inhibition of the AGER-ALOX5 pathway or global depletion (Ager-/-) or conditional depletion of AGER in myeloid cells (AgerMye-/-) protects against lipopolysaccharide-induced septic death in poly(I:C)-primed mice. These data identify a molecular basis for caspase-11 inflammasome activation and provide a potential strategy to treat sepsis.
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Affiliation(s)
- Ruochan Chen
- The Third Affiliated Hospital, Guangzhou Medical University, Guangzhou, China
- Department of Infectious Diseases and State Key Lab of Viral Hepatitis, Xiangya Hospital, Central South University, Changsha, China
| | - Shan Zhu
- The Third Affiliated Hospital, Guangzhou Medical University, Guangzhou, China
- Department of Pediatrics, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Ling Zeng
- State Key Laboratory of Trauma, Burns and Combined Injury, Research Institute of Surgery, Research Institute for Traffic Medicine of People's Liberation Army, Daping Hospital, Third Military Medical University, Chongqing, China
| | - Qingde Wang
- Department of Surgery, University of Pittsburgh, Pittsburgh, PA, United States
| | - Yi Sheng
- Department of Obstetrics, Gynecology and Reproductive Sciences, University of Pittsburgh, Pittsburgh, PA, United States
| | - Borong Zhou
- The Third Affiliated Hospital, Guangzhou Medical University, Guangzhou, China
| | - Daolin Tang
- Department of Surgery, UT Southwestern Medical Center, Dallas, TX, United States
| | - Rui Kang
- Department of Surgery, UT Southwestern Medical Center, Dallas, TX, United States
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38
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Biswas I, Panicker SR, Cai X, Mehta-D'souza P, Rezaie AR. Inorganic Polyphosphate Amplifies High Mobility Group Box 1-Mediated Von Willebrand Factor Release and Platelet String Formation on Endothelial Cells. Arterioscler Thromb Vasc Biol 2019; 38:1868-1877. [PMID: 29930000 DOI: 10.1161/atvbaha.118.311165] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Objective- Inorganic polyphosphate (polyP) is known to modulate coagulation, inflammation, and metabolic pathways. It also amplifies inflammatory responses of HMGB1 (high mobility group box 1) in endothelial cells. The objective of this study was to evaluate the effect of polyP on von Willebrand factor (VWF) release from endothelial cells with or without HMGB1. Approach and Results- EA.hy926 endothelial cells were treated with different concentrations of polyP70 alone or in combination with different concentrations of HMGB1. VWF release was measured by an ELISA assay in the absence or presence of pharmacological inhibitors of the receptor for advanced glycation end products, P2Y1, and Ca2+. A flow chamber assay was used to monitor polyP70-mediated platelet recruitment and VWF-platelet string formation. PolyP70 and HMGB1 induced VWF release from endothelial cells by a concentration-dependent manner. PolyP70 amplified HMGB1-mediated VWF release from endothelial cells. This was also true if boiled platelet releasate was used as the source of polyP. Gene silencing or pharmacological inhibitors of receptor for advanced glycation end products, P2Y1, and Ca2+ significantly inhibited VWF release. PolyP70 and HMGB1 synergistically promoted VWF-platelet string formation in the flow chamber assay, which was inhibited by the anti-GPIbα (glycoprotein Ib alpha) antibody. VWF release by polyP70-HMGB1 complex required phosphorylation of Src and phospholipase C because inhibitors of Src, phospholipase C, and Ca2+ signaling significantly decreased VWF secretion. The polyP70-HMGB1 complex also increased angiopoietin-2 release, indicating that Weibel-Palade body exocytosis is involved in the VWF release. Conclusions- PolyP70 can promote thrombotic and inflammatory pathways by inducing VWF release and platelet string formation on endothelial cells.
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Affiliation(s)
- Indranil Biswas
- From the Cardiovascular Biology Research Program, Oklahoma Medical Research Foundation (I.B., S.R.P., X.C., P.M.-D., A.R.R.)
| | - Sumith R Panicker
- From the Cardiovascular Biology Research Program, Oklahoma Medical Research Foundation (I.B., S.R.P., X.C., P.M.-D., A.R.R.)
| | - Xiaofeng Cai
- From the Cardiovascular Biology Research Program, Oklahoma Medical Research Foundation (I.B., S.R.P., X.C., P.M.-D., A.R.R.)
| | - Padmaja Mehta-D'souza
- From the Cardiovascular Biology Research Program, Oklahoma Medical Research Foundation (I.B., S.R.P., X.C., P.M.-D., A.R.R.)
| | - Alireza R Rezaie
- From the Cardiovascular Biology Research Program, Oklahoma Medical Research Foundation (I.B., S.R.P., X.C., P.M.-D., A.R.R.).,Department of Biochemistry and Molecular Biology, University of Oklahoma Health Sciences Center, Oklahoma City (A.R.R.)
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Eichhorst A, Daniel C, Rzepka R, Sehnert B, Nimmerjahn F, Voll RE, Chevalier N. Relevance of Receptor for Advanced Glycation end Products (RAGE) in Murine Antibody-Mediated Autoimmune Diseases. Int J Mol Sci 2019; 20:ijms20133234. [PMID: 31266174 PMCID: PMC6651235 DOI: 10.3390/ijms20133234] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2019] [Revised: 06/25/2019] [Accepted: 06/26/2019] [Indexed: 12/24/2022] Open
Abstract
It is incompletely understood how self-antigens become targets of humoral immunity in antibody-mediated autoimmune diseases. In this context, alarmins are discussed as an important level of regulation. Alarmins are recognized by various receptors, such as receptor for advanced glycation end products (RAGE). As RAGE is upregulated under inflammatory conditions, strongly binds nucleic acids and mediates pro-inflammatory responses upon alarmin recognition, our aim was to examine its contribution to immune complex-mediated autoimmune diseases. This question was addressed employing RAGE−/− animals in murine models of pristane-induced lupus, collagen-induced, and serum-transfer arthritis. Autoantibodies were assessed by enzyme-linked immunosorbent assay, renal disease by quantification of proteinuria and histology, arthritis by scoring joint inflammation. The associated immune status was determined by flow cytometry. In both disease entities, we detected tendentiously decreased autoantibody levels in RAGE−/− mice, however no differences in clinical outcome. In accordance with autoantibody levels, a subgroup of the RAGE−/− animals showed a decrease in plasma cells, and germinal center B cells and an increase in follicular B cells. Based on our results, we suggest that RAGE deficiency alone does not significantly affect antibody-mediated autoimmunity. RAGE may rather exert its effects along with other receptors linking environmental factors to auto-reactive immune responses.
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Affiliation(s)
- Alexandra Eichhorst
- Department of Rheumatology and Clinical Immunology, Medical Centre-University of Freiburg, Faculty of Medicine, 79106 Freiburg, Baden-Wuerttemberg, Germany
| | - Christoph Daniel
- Department of Nephropathology, Friedrich-Alexander University (FAU) of Erlangen-Nuremberg, 91054 Erlangen, Bavaria, Germany
| | - Rita Rzepka
- Department of Rheumatology and Clinical Immunology, Medical Centre-University of Freiburg, Faculty of Medicine, 79106 Freiburg, Baden-Wuerttemberg, Germany
| | - Bettina Sehnert
- Department of Rheumatology and Clinical Immunology, Medical Centre-University of Freiburg, Faculty of Medicine, 79106 Freiburg, Baden-Wuerttemberg, Germany
| | - Falk Nimmerjahn
- Department of Biology, Friedrich-Alexander University (FAU) of Erlangen-Nuremberg, 91058 Erlangen, Bavaria, Germany
| | - Reinhard E Voll
- Department of Rheumatology and Clinical Immunology, Medical Centre-University of Freiburg, Faculty of Medicine, 79106 Freiburg, Baden-Wuerttemberg, Germany
| | - Nina Chevalier
- Department of Rheumatology and Clinical Immunology, Medical Centre-University of Freiburg, Faculty of Medicine, 79106 Freiburg, Baden-Wuerttemberg, Germany.
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Radiological assessment of effectiveness of soluble RAGE in attenuating Angiotensin II-induced LVH mouse model using in vivo 9.4T MRI. Sci Rep 2019; 9:8475. [PMID: 31186521 PMCID: PMC6559980 DOI: 10.1038/s41598-019-44933-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2018] [Accepted: 01/30/2019] [Indexed: 01/11/2023] Open
Abstract
We investigated the effectiveness of soluble Receptor for Advanced Glycation Endproducts (sRAGE) in attenuating angiotensin II (AngII)-induced left ventricular hypertrophy (LVH) using in vivo 9.4T cine-magnetic resonance imaging (CINE-MRI). Mice were divided into four groups: AngII (n = 9), saline (n = 10), sRAGE (n = 10), and AngII + sRAGE (n = 10). CINE-MRI was performed in each group after administration of the AngII or sRAGE, and CINE-MR images were analyzed to obtain parameters indicating cardiac anatomical and functional changes including end-diastolic and end-systolic blood volume, end-diastolic and end-systolic myocardial volume, ejection fraction, end-diastolic and end-systolic myocardial mass, and LV wall thickness. LVH observed in AngII group was significantly attenuated by sRAGE. These trends were also observed in histological analysis, demonstrating that cardiac function tracking using in vivo and real-time 9.4T MR imaging provides valuable information about the cardiac remodeling induced by AngII and sRAGE in an AngII-induced LV hypertrophy mice model.
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Miller-Ocuin JL, Liang X, Boone BA, Doerfler WR, Singhi AD, Tang D, Kang R, Lotze MT, Zeh HJ. DNA released from neutrophil extracellular traps (NETs) activates pancreatic stellate cells and enhances pancreatic tumor growth. Oncoimmunology 2019; 8:e1605822. [PMID: 31428515 PMCID: PMC6685506 DOI: 10.1080/2162402x.2019.1605822] [Citation(s) in RCA: 75] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2018] [Revised: 11/09/2018] [Accepted: 11/18/2018] [Indexed: 01/04/2023] Open
Abstract
Neutrophil extracellular trap (NET) formation results in the expulsion of granulocyte proteins and DNA into the extracellular space. This process is mediated by the enzyme peptidyl arginine deiminase 4 (PADI4) and translocation of elastase to the nucleus. NET formation, marked by increased levels of extracellular DNA, promotes pancreatic cancer proliferation and metastasis. Mice deficient in Padi4 demonstrate decreased pancreatic tumor growth, associated with a reduction in circulating extracellular DNA levels, diminished pancreatic stromal activation and improved survival in murine orthotopic pancreatic adenocarcinoma. Transplantation of Padi4-/- bone marrow into genetically engineered mice with Kras driven pancreatic adenocarcinoma (Pdx1-Cre:KrasG12D/+, KC mice) limits the frequency of invasive cancers when compared with syngeneic controls. DNA from neutrophils activates pancreatic stellate cells that form dense, fibrous stroma which can promote and enable tumor proliferation. DNase treatment diminishes murine tumor growth and stromal activation to reverse the effect of NETs within the tumor microenvironment. Furthermore, deletion of the receptor for advanced glycation end products (RAGE) in pancreatic stellate cells abrogates the effects of DNA in promoting stellate cell proliferation and decreases tumor growth. Circulating neutrophil-derived DNA correlates with the stage in patients with pancreatic ductal adenocarcinoma, confirming the role of NETs in human pancreatic cancer. These findings support further investigation into targeting of NETs, PADI4 and extracellular DNA as a potential treatment strategy in patients with pancreatic cancer. Trial Registration: This study reports correlative data from a clinical trial registered with clinicaltrials.gov, NCT01978184 (November 7, 2013).
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Affiliation(s)
| | - Xiaoyan Liang
- Department of Surgery, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Brian A. Boone
- Department of Surgery, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
- Department of Surgery, West Virginia University, Morgantown, WV, USA
| | - W. Reed Doerfler
- Department of Surgery, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Aatur D. Singhi
- Department of Pathology, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Daolin Tang
- Department of Surgery, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
- Department of Surgery, UT Southwestern Medical Center, Dallas, TX, USA
| | - Rui Kang
- Department of Surgery, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
- Department of Surgery, UT Southwestern Medical Center, Dallas, TX, USA
| | - Michael T. Lotze
- Department of Surgery, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
- Department of Immunology, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
- Department of Bioengineering, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Herbert J. Zeh
- Department of Surgery, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
- Department of Surgery, UT Southwestern Medical Center, Dallas, TX, USA
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Yang H, Liu H, Zeng Q, Imperato GH, Addorisio ME, Li J, He M, Cheng KF, Al-Abed Y, Harris HE, Chavan SS, Andersson U, Tracey KJ. Inhibition of HMGB1/RAGE-mediated endocytosis by HMGB1 antagonist box A, anti-HMGB1 antibodies, and cholinergic agonists suppresses inflammation. Mol Med 2019; 25:13. [PMID: 30975096 PMCID: PMC6460792 DOI: 10.1186/s10020-019-0081-6] [Citation(s) in RCA: 69] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2019] [Accepted: 03/21/2019] [Indexed: 01/11/2023] Open
Abstract
BACKGROUND Extracellular high mobility group box 1 protein (HMGB1) serves a central role in inflammation as a transporter protein, which binds other immune-activating molecules that are endocytosed via the receptor for advanced glycation end-products (RAGE). These pro-inflammatory complexes are targeted to the endolysosomal compartment, where HMGB1 permeabilizes the lysosomes. This enables HMGB1-partner molecules to avoid degradation, to leak into the cytosol, and to reach cognate immune-activating sensors. Lipopolysaccharide (LPS) requires this pathway to generate pyroptosis by accessing its key cytosolic receptors, murine caspase 11, or the human caspases 4 and 5. This lytic, pro-inflammatory cell death plays a fundamental pathogenic role in gram-negative sepsis. The aim of the study was to identify molecules inhibiting HMGB1 or HMGB1/LPS cellular internalization. METHODS Endocytosis was studied in cultured macrophages using Alexa Fluor-labeled HMGB1 or complexes of HMGB1 and Alexa Fluor-labeled LPS in the presence of an anti-HMGB1 monoclonal antibody (mAb), recombinant HMGB1 box A protein, acetylcholine, the nicotinic acetylcholine receptor subtype alpha 7 (α7 nAChR) agonist GTS-21, or a dynamin-specific inhibitor of endocytosis. Images were obtained by fluorescence microscopy and quantified by the ImageJ processing program (NIH). Data were analyzed using student's t test or one-way ANOVA followed by the least significant difference or Tukey's tests. RESULTS Anti-HMGB1 mAb, recombinant HMGB1 antagonist box A protein, acetylcholine, GTS-21, and the dynamin-specific inhibitor of endocytosis inhibited internalization of HMGB1 or HMGB1-LPS complexes in cultured macrophages. These agents prevented macrophage activation in response to HMGB1 and/or HMGB1-LPS complexes. CONCLUSION These results demonstrate that therapies based on HMGB1 antagonists and the cholinergic anti-inflammatory pathway share a previously unrecognized molecular mechanism of substantial clinical relevance.
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Affiliation(s)
- Huan Yang
- Center for Biomedical Science The Feinstein Institute for Medical Research, 350 Community Drive, Manhasset, NY 11030 USA
| | - Hui Liu
- Center for Biomedical Science The Feinstein Institute for Medical Research, 350 Community Drive, Manhasset, NY 11030 USA
| | - Qiong Zeng
- Center for Biomedical Science The Feinstein Institute for Medical Research, 350 Community Drive, Manhasset, NY 11030 USA
| | - Gavin H. Imperato
- Center for Biomedical Science The Feinstein Institute for Medical Research, 350 Community Drive, Manhasset, NY 11030 USA
| | - Meghan E. Addorisio
- Center for Biomedical Science The Feinstein Institute for Medical Research, 350 Community Drive, Manhasset, NY 11030 USA
| | - Jianhua Li
- Center for Biomedical Science The Feinstein Institute for Medical Research, 350 Community Drive, Manhasset, NY 11030 USA
| | - Mingzhu He
- Center for Molecular Innovation, The Feinstein Institute for Medical Research, 350 Community Drive, Manhasset, NY 11030 USA
| | - Kai Fan Cheng
- Center for Molecular Innovation, The Feinstein Institute for Medical Research, 350 Community Drive, Manhasset, NY 11030 USA
| | - Yousef Al-Abed
- Center for Bioelectronic Medicine, The Feinstein Institute for Medical Research, 350 Community Drive, Manhasset, NY 11030 USA
- Elmezzi Graduate School of Molecular Medicine, Feinstein Institute for Medical Research, Northwell Health, Manhasset, NY USA
- Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Hempstead, New York, USA
- Center for Molecular Innovation, The Feinstein Institute for Medical Research, 350 Community Drive, Manhasset, NY 11030 USA
| | - Helena E. Harris
- Center for Molecular Medicine, Department of Medicine Solna, Karolinska Institute, 17176 Stockholm, Sweden
| | - Sangeeta S. Chavan
- Center for Biomedical Science The Feinstein Institute for Medical Research, 350 Community Drive, Manhasset, NY 11030 USA
- Center for Bioelectronic Medicine, The Feinstein Institute for Medical Research, 350 Community Drive, Manhasset, NY 11030 USA
- Elmezzi Graduate School of Molecular Medicine, Feinstein Institute for Medical Research, Northwell Health, Manhasset, NY USA
- Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Hempstead, New York, USA
| | - Ulf Andersson
- Department of Women’s and Children’s Health, Karolinska Institute, Karolinska University Hospital, 17176 Stockholm, Sweden
| | - Kevin J. Tracey
- Center for Biomedical Science The Feinstein Institute for Medical Research, 350 Community Drive, Manhasset, NY 11030 USA
- Center for Bioelectronic Medicine, The Feinstein Institute for Medical Research, 350 Community Drive, Manhasset, NY 11030 USA
- Elmezzi Graduate School of Molecular Medicine, Feinstein Institute for Medical Research, Northwell Health, Manhasset, NY USA
- Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Hempstead, New York, USA
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Uderhardt S, Martins AJ, Tsang JS, Lämmermann T, Germain RN. Resident Macrophages Cloak Tissue Microlesions to Prevent Neutrophil-Driven Inflammatory Damage. Cell 2019; 177:541-555.e17. [PMID: 30955887 DOI: 10.1016/j.cell.2019.02.028] [Citation(s) in RCA: 215] [Impact Index Per Article: 43.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2018] [Revised: 01/02/2019] [Accepted: 02/15/2019] [Indexed: 12/21/2022]
Abstract
Neutrophils are attracted to and generate dense swarms at sites of cell damage in diverse tissues, often extending the local disruption of organ architecture produced by the initial insult. Whether the inflammatory damage resulting from such neutrophil accumulation is an inescapable consequence of parenchymal cell death has not been explored. Using a combination of dynamic intravital imaging and confocal multiplex microscopy, we report here that tissue-resident macrophages rapidly sense the death of individual cells and extend membrane processes that sequester the damage, a process that prevents initiation of the feedforward chemoattractant signaling cascade that results in neutrophil swarms. Through this "cloaking" mechanism, the resident macrophages prevent neutrophil-mediated inflammatory damage, maintaining tissue homeostasis in the face of local cell injury that occurs on a regular basis in many organs because of mechanical and other stresses. VIDEO ABSTRACT.
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Affiliation(s)
- Stefan Uderhardt
- Lymphocyte Biology Section, Laboratory of Immune System Biology, National Institute of Allergy and Infectious Diseases, NIH, Bethesda, MD 20892, USA.
| | - Andrew J Martins
- Systems Genomics and Bioinformatics Unit, Laboratory of Immune System Biology, National Institute of Allergy and Infectious Diseases, NIH, Bethesda, MD 20892, USA
| | - John S Tsang
- Systems Genomics and Bioinformatics Unit, Laboratory of Immune System Biology, National Institute of Allergy and Infectious Diseases, NIH, Bethesda, MD 20892, USA
| | - Tim Lämmermann
- Max Planck Institute of Immunobiology and Epigenetics, Group Immune Cell Dynamics, 79108 Freibcurg, Germany
| | - Ronald N Germain
- Lymphocyte Biology Section, Laboratory of Immune System Biology, National Institute of Allergy and Infectious Diseases, NIH, Bethesda, MD 20892, USA.
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Qu L, Chen C, Chen Y, Li Y, Tang F, Huang H, He W, Zhang R, Shen L. High-Mobility Group Box 1 (HMGB1) and Autophagy in Acute Lung Injury (ALI): A Review. Med Sci Monit 2019; 25:1828-1837. [PMID: 30853709 PMCID: PMC6423734 DOI: 10.12659/msm.912867] [Citation(s) in RCA: 70] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Acute lung injury (ALI) is a life-threatening clinical syndrome in critically ill patients. The identification of novel biological markers for the early diagnosis of ALI and the development of more effective treatments are topics of current research. High mobility group box-1 protein (HMGB1) is a late inflammatory mediator associated with sepsis, malignancy, and immune disease. Levels of HMGB1 may reflect the severity of inflammation and tissue damage, indicating a potential role for HMGB1 as a prognostic biomarker in ALI, and a potential target for blocking inflammatory pathways. Several studies have shown that HMGB1 regulates autophagy. Autophagy, or type II programmed cell death, is an essential biological process that maintains cellular homeostasis. Studies have shown that HMGB1 and autophagy are involved in the pathogenesis of many lung diseases including ALI but the specific mechanisms underlying this association remain to be determined. This review aims to provide an update on the current status of the role of HMBG1 and autophagy in ALI.
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Affiliation(s)
- Lihua Qu
- Department of Physiology, Hunan Normal University Medical College, Changsha, Hunan, China (mainland)
| | - Chao Chen
- Department of Pathology and Key Laboratory of Cancer Stem Cells and Translational Medicine, Hunan Normal University Medical College, Changsha, Hunan, Christmas island
| | - YangYe Chen
- Department of Physiology, Hunan Normal University Medical College, Changsha, Hunan, China (mainland)
| | - Yi Li
- Department of Physiology, Hunan Normal University Medical College, Changsha, Hunan, China (mainland)
| | - Fang Tang
- Department of Medical Nursing, Hunan Normal University Medical College, Changsha, Hunan, China (mainland)
| | - Hao Huang
- Department of Orthopedics, The Second Affiliated Hospital of Hunan Normal University, The 163rd Central Hospital of the Peoples' Liberation Army (PLA), Changsha, Hunan, China (mainland)
| | - Wei He
- Department of Ultrasonography, The Third Xiangya Hospital, Central South University, Changsha, Hunan, China (mainland)
| | - Ran Zhang
- Department of Immunology, Hunan Normal University Medical College, Changsha, Hunan, China (mainland)
| | - Li Shen
- Department of Physiology, Hunan Normal University Medical College, Changsha, Hunan, China (mainland)
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Shukla SK, Rafiq K. Proteasome biology and therapeutics in cardiac diseases. Transl Res 2019; 205:64-76. [PMID: 30342797 PMCID: PMC6372329 DOI: 10.1016/j.trsl.2018.09.003] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/01/2018] [Revised: 08/30/2018] [Accepted: 09/25/2018] [Indexed: 02/07/2023]
Abstract
The ubiquitin proteasome system (UPS) is the major pathway for intracellular protein degradation in most organs, including the heart. UPS controls many fundamental biological processes such as cell cycle, cell division, immune responses, antigen presentation, apoptosis, and cell signaling. The UPS not only degrades substrates but also regulates activity of gene transcription at the post-transcription level. Emerging evidence suggests that impairment of UPS function is sufficient to cause a number of cardiac diseases, including heart failure, cardiomyopathies, hypertrophy, atrophy, ischemia-reperfusion, and atherosclerosis. Alterations in the expression of UPS components, changes in proteasomal peptidase activities and increased ubiquitinated and oxidized proteins have also been detected in diabetic cardiomyopathy (DCM). However, the pathophysiological role of the UPS in DCM has not been examined. Recently, in vitro and in vivo studies have proven highly valuable in assessing effects of various stressors on the UPS and, in some cases, suggesting a causal link between defective protein clearance and disease phenotypes in different cardiac diseases, including DCM. Translation of these findings to human disease can be greatly strengthened by corroboration of discoveries from experimental model systems using human heart tissue from well-defined patient populations. This review will summarize the general role of the UPS in different cardiac diseases, with major focus on DCM, and on recent advances in therapeutic development.
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Affiliation(s)
- Sanket Kumar Shukla
- Department of Medicine, Center for Translational Medicine, Thomas Jefferson University, Philadelphia, Pennsylvania
| | - Khadija Rafiq
- Department of Medicine, Center for Translational Medicine, Thomas Jefferson University, Philadelphia, Pennsylvania.
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Sanders KA, Delker DA, Huecksteadt T, Beck E, Wuren T, Chen Y, Zhang Y, Hazel MW, Hoidal JR. RAGE is a Critical Mediator of Pulmonary Oxidative Stress, Alveolar Macrophage Activation and Emphysema in Response to Cigarette Smoke. Sci Rep 2019; 9:231. [PMID: 30659203 PMCID: PMC6338799 DOI: 10.1038/s41598-018-36163-z] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2018] [Accepted: 11/12/2018] [Indexed: 02/07/2023] Open
Abstract
The receptor for advanced glycation end products (RAGE), a cell membrane receptor, recognizes ligands produced by cigarette smoke (CS) and has been implicated in the pathogenesis of COPD. We demonstrate that deletion or pharmacologic inhibition of RAGE prevents development of CS-induced emphysema. To identify molecular pathways by which RAGE mediates smoking related lung injury we performed unbiased gene expression profiling of alveolar macrophages (AM) obtained from RAGE null and C57BL/6 WT mice exposed to CS for one week or four months. Pathway analysis of RNA expression identified a number of genes integral to the pathogenesis of COPD impacted by the absence of RAGE. Altered expression of antioxidant response genes and lung protein 4-HNE immunostaining suggest attenuated oxidative stress in the RAGE null mice despite comparable CS exposure and lung leukocyte burden as the WT mice. Reduced endoplasmic reticulum stress in response to CS exposure also was observed in the AM from RAGE null mice. These findings provide novel insight into the sources of oxidative stress, macrophage activation, and the pathogenesis of lung disease due to CS exposure.
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Affiliation(s)
- Karl A Sanders
- Division of Respiratory, Critical Care, and Occupational Pulmonary Medicine, University of Utah, Salt Lake City, Utah, USA
- Department of Internal Medicine, University of Utah, Salt Lake City, Utah, USA
- George E. Wahlen Department of Veterans Affairs Medical Center, Salt Lake City, Utah, USA
| | - Don A Delker
- Division of Gastroenterology, Hepatology, and Nutrition, University of Utah, Salt Lake City, Utah, USA
| | - Tom Huecksteadt
- George E. Wahlen Department of Veterans Affairs Medical Center, Salt Lake City, Utah, USA
| | - Emily Beck
- Division of Respiratory, Critical Care, and Occupational Pulmonary Medicine, University of Utah, Salt Lake City, Utah, USA
- Department of Internal Medicine, University of Utah, Salt Lake City, Utah, USA
- George E. Wahlen Department of Veterans Affairs Medical Center, Salt Lake City, Utah, USA
| | - Tanna Wuren
- George E. Wahlen Department of Veterans Affairs Medical Center, Salt Lake City, Utah, USA
| | - Yuntian Chen
- Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yuxia Zhang
- Department of Pharmacology, Toxicology and Therapeutics, University of Kansas Medical Center, Kansas City, Kansas, USA
| | - Mark W Hazel
- Division of Gastroenterology, Hepatology, and Nutrition, University of Utah, Salt Lake City, Utah, USA
| | - John R Hoidal
- Division of Respiratory, Critical Care, and Occupational Pulmonary Medicine, University of Utah, Salt Lake City, Utah, USA.
- Department of Internal Medicine, University of Utah, Salt Lake City, Utah, USA.
- George E. Wahlen Department of Veterans Affairs Medical Center, Salt Lake City, Utah, USA.
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Chornenkyy Y, Wang W, Wei A, Nelson PT. Alzheimer's disease and type 2 diabetes mellitus are distinct diseases with potential overlapping metabolic dysfunction upstream of observed cognitive decline. Brain Pathol 2019; 29:3-17. [PMID: 30106209 PMCID: PMC6427919 DOI: 10.1111/bpa.12655] [Citation(s) in RCA: 92] [Impact Index Per Article: 18.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2018] [Accepted: 08/09/2018] [Indexed: 12/13/2022] Open
Abstract
Alzheimer's disease (AD) and type 2 diabetes mellitus (T2DM) are highly prevalent aging-related diseases associated with significant morbidity and mortality. Some findings in human and animal models have linked T2DM to AD-type dementia. Despite epidemiological associations between the T2DM and cognitive impairment, the interrelational mechanisms are unclear. The preponderance of evidence in longitudinal studies with autopsy confirmation have indicated that vascular mechanisms, rather than classic AD-type pathologies, underlie the cognitive decline often seen in self-reported T2DM. T2DM is associated with cardiovascular and cerebrovascular disease (CVD), and is associated with increased risk of infarcts and small vessel disease in the brain and other organs. Neuropathological examinations of post-mortem brains demonstrated evidence of cerebrovascular disease and little to no correlation between T2DM and β-amyloid deposits or neurofibrillary tangles. Nevertheless, the mechanisms upstream of early AD-specific pathology remain obscure. In this regard, there may indeed be overlap between the pathologic mechanisms of T2DM/"metabolic syndrome," and AD. More specifically, cerebral insulin processing, glucose metabolism, mitochondrial function, and/or lipid metabolism could be altered in patients in early AD and directly influence symptomatology and/or neuropathology.
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Affiliation(s)
| | - Wang‐Xia Wang
- University of Kentucky College of MedicineLexingtonKY
- Sanders‐Brown Center on Aging, Department of PathologyUniversity of KentuckyLexingtonKY
| | - Angela Wei
- Department of BiologyUniversity of KentuckyLexingtonKY
| | - Peter T. Nelson
- University of Kentucky College of MedicineLexingtonKY
- Sanders‐Brown Center on Aging, Department of PathologyUniversity of KentuckyLexingtonKY
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48
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Deng M, Tang Y, Li W, Wang X, Zhang R, Zhang X, Zhao X, Liu J, Tang C, Liu Z, Huang Y, Peng H, Xiao L, Tang D, Scott MJ, Wang Q, Liu J, Xiao X, Watkins S, Li J, Yang H, Wang H, Chen F, Tracey KJ, Billiar TR, Lu B. The Endotoxin Delivery Protein HMGB1 Mediates Caspase-11-Dependent Lethality in Sepsis. Immunity 2018; 49:740-753.e7. [PMID: 30314759 PMCID: PMC6300139 DOI: 10.1016/j.immuni.2018.08.016] [Citation(s) in RCA: 354] [Impact Index Per Article: 59.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2017] [Revised: 06/19/2018] [Accepted: 08/16/2018] [Indexed: 12/28/2022]
Abstract
Caspase-11, a cytosolic endotoxin (lipopolysaccharide: LPS) receptor, mediates pyroptosis, a lytic form of cell death. Caspase-11-dependent pyroptosis mediates lethality in endotoxemia, but it is unclear how LPS is delivered into the cytosol for the activation of caspase-11. Here we discovered that hepatocyte-released high mobility group box 1 (HMGB1) was required for caspase-11-dependent pyroptosis and lethality in endotoxemia and bacterial sepsis. Mechanistically, hepatocyte-released HMGB1 bound LPS and targeted its internalization into the lysosomes of macrophages and endothelial cells via the receptor for advanced glycation end-products (RAGE). Subsequently, HMGB1 permeabilized the phospholipid bilayer in the acidic environment of lysosomes. This resulted in LPS leakage into the cytosol and caspase-11 activation. Depletion of hepatocyte HMGB1, inhibition of hepatocyte HMGB1 release, neutralizing extracellular HMGB1, or RAGE deficiency prevented caspase-11-dependent pyroptosis and death in endotoxemia and bacterial sepsis. These findings indicate that HMGB1 interacts with LPS to mediate caspase-11-dependent pyroptosis in lethal sepsis.
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Affiliation(s)
- Meihong Deng
- Department of Surgery, University of Pittsburgh School of Medicine, Pittsburgh, PA 15213, USA
| | - Yiting Tang
- Department of Physiology, School of Basic Medical Science, Central South University, Changsha, Hunan Province 410000, P.R. China
| | - Wenbo Li
- Department of Hematology and Key Laboratory of Non-resolving Inflammation and Cancer of Hunan Province, The 3rd Xiangya Hospital, Central South University, Changsha 410000, P.R. China; Key Laboratory of Medical Genetics, School of Biological Science and Technology, Central South University, Changsha, Hunan Province 410000, P.R. China
| | - Xiangyu Wang
- Department of Hematology and Key Laboratory of Non-resolving Inflammation and Cancer of Hunan Province, The 3rd Xiangya Hospital, Central South University, Changsha 410000, P.R. China; Key Laboratory of Medical Genetics, School of Biological Science and Technology, Central South University, Changsha, Hunan Province 410000, P.R. China; Key Laboratory of Sepsis Translational Medicine of Hunan, Central South University, Changsha, Hunan Province 410000, P.R. China
| | - Rui Zhang
- Department of Hematology and Key Laboratory of Non-resolving Inflammation and Cancer of Hunan Province, The 3rd Xiangya Hospital, Central South University, Changsha 410000, P.R. China; Key Laboratory of Medical Genetics, School of Biological Science and Technology, Central South University, Changsha, Hunan Province 410000, P.R. China; Key Laboratory of Sepsis Translational Medicine of Hunan, Central South University, Changsha, Hunan Province 410000, P.R. China
| | - Xianying Zhang
- Department of Hematology and Key Laboratory of Non-resolving Inflammation and Cancer of Hunan Province, The 3rd Xiangya Hospital, Central South University, Changsha 410000, P.R. China; Key Laboratory of Medical Genetics, School of Biological Science and Technology, Central South University, Changsha, Hunan Province 410000, P.R. China; Key Laboratory of Sepsis Translational Medicine of Hunan, Central South University, Changsha, Hunan Province 410000, P.R. China
| | - Xin Zhao
- Department of Hematology and Key Laboratory of Non-resolving Inflammation and Cancer of Hunan Province, The 3rd Xiangya Hospital, Central South University, Changsha 410000, P.R. China; Key Laboratory of Medical Genetics, School of Biological Science and Technology, Central South University, Changsha, Hunan Province 410000, P.R. China; Key Laboratory of Sepsis Translational Medicine of Hunan, Central South University, Changsha, Hunan Province 410000, P.R. China
| | - Jian Liu
- Department of Hematology and Key Laboratory of Non-resolving Inflammation and Cancer of Hunan Province, The 3rd Xiangya Hospital, Central South University, Changsha 410000, P.R. China; Key Laboratory of Medical Genetics, School of Biological Science and Technology, Central South University, Changsha, Hunan Province 410000, P.R. China; Key Laboratory of Sepsis Translational Medicine of Hunan, Central South University, Changsha, Hunan Province 410000, P.R. China
| | - Cheng Tang
- College of Life Science, Hunan Normal University, Changsha 410081, P.R. China
| | - Zhonghua Liu
- College of Life Science, Hunan Normal University, Changsha 410081, P.R. China
| | - Yongzhuo Huang
- Shanghai Institute of Materia Medica, Chinese Academy of Science, 501 Hai-ke Rd, Shanghai 201203, P.R. China
| | - Huige Peng
- Shanghai Institute of Materia Medica, Chinese Academy of Science, 501 Hai-ke Rd, Shanghai 201203, P.R. China
| | - Lehui Xiao
- College of Chemistry, Nankai University, Tianjin 300073, P.R. China
| | - Daolin Tang
- Department of Surgery, University of Pittsburgh School of Medicine, Pittsburgh, PA 15213, USA
| | - Melanie J Scott
- Department of Surgery, University of Pittsburgh School of Medicine, Pittsburgh, PA 15213, USA
| | - Qingde Wang
- Department of Surgery, University of Pittsburgh School of Medicine, Pittsburgh, PA 15213, USA
| | - Jing Liu
- Department of Hematology and Key Laboratory of Non-resolving Inflammation and Cancer of Hunan Province, The 3rd Xiangya Hospital, Central South University, Changsha 410000, P.R. China
| | - Xianzhong Xiao
- Key Laboratory of Sepsis Translational Medicine of Hunan, Central South University, Changsha, Hunan Province 410000, P.R. China
| | - Simon Watkins
- Center for Biologic Imaging, University of Pittsburgh School of Medicine, Pittsburgh, PA 15213, USA
| | - Jianhua Li
- Laboratory of Biomedical Science, The Feinstein Institute for Medical Research, Northwell Health, 350 Community Drive, Manhasset, NY 11030, USA
| | - Huan Yang
- Laboratory of Biomedical Science, The Feinstein Institute for Medical Research, Northwell Health, 350 Community Drive, Manhasset, NY 11030, USA
| | - Haichao Wang
- Department of Emergency Medicine, North Shore University Hospital, Northwell Health, 350 Community Drive, Manhasset, NY 11030, USA
| | - Fangping Chen
- Department of Hematology and Key Laboratory of Non-resolving Inflammation and Cancer of Hunan Province, The 3rd Xiangya Hospital, Central South University, Changsha 410000, P.R. China
| | - Kevin J Tracey
- Laboratory of Biomedical Science, The Feinstein Institute for Medical Research, Northwell Health, 350 Community Drive, Manhasset, NY 11030, USA
| | - Timothy R Billiar
- Department of Surgery, University of Pittsburgh School of Medicine, Pittsburgh, PA 15213, USA.
| | - Ben Lu
- Department of Hematology and Key Laboratory of Non-resolving Inflammation and Cancer of Hunan Province, The 3rd Xiangya Hospital, Central South University, Changsha 410000, P.R. China; Key Laboratory of Medical Genetics, School of Biological Science and Technology, Central South University, Changsha, Hunan Province 410000, P.R. China; Key Laboratory of Sepsis Translational Medicine of Hunan, Central South University, Changsha, Hunan Province 410000, P.R. China.
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Regulation of Metabolic Disease-Associated Inflammation by Nutrient Sensors. Mediators Inflamm 2018; 2018:8261432. [PMID: 30116154 PMCID: PMC6079375 DOI: 10.1155/2018/8261432] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2018] [Revised: 05/21/2018] [Accepted: 06/14/2018] [Indexed: 12/15/2022] Open
Abstract
Visceral obesity is frequently associated with the development of type 2 diabetes (T2D), a highly prevalent chronic disease that features insulin resistance and pancreatic β-cell dysfunction as important hallmarks. Recent evidence indicates that the chronic, low-grade inflammation commonly associated with visceral obesity plays a major role connecting the excessive visceral fat deposition with the development of insulin resistance and pancreatic β-cell dysfunction. Herein, we review the mechanisms by which nutrients modulate obesity-associated inflammation.
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50
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Chen X, Ma J, Kwan T, Stribos EGD, Messchendorp AL, Loh YW, Wang X, Paul M, Cunningham EC, Habib M, Alexander IE, Sharland AF, Chadban SJ, Wu H. Blockade of HMGB1 Attenuates Diabetic Nephropathy in Mice. Sci Rep 2018; 8:8319. [PMID: 29844451 PMCID: PMC5974129 DOI: 10.1038/s41598-018-26637-5] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2018] [Accepted: 05/08/2018] [Indexed: 12/24/2022] Open
Abstract
Activation of TLR2 or TLR4 by endogenous ligands such as high mobility group box 1 (HMGB1) may mediate inflammation causing diabetic kidney injury. We determined whether blockade of HMGB1 signaling by: (1) supra-physiological production of endogenous secretory Receptor for Advanced Glycation End-products (esRAGE), a receptor for HMGB1; (2) administration of HMGB1 A Box, a specific competitive antagonist, would inhibit development of streptozotocin induced diabetic nephropathy (DN). Wild-type diabetic mice developed albuminuria, glomerular injuries, interstitial fibrosis and renal inflammation. Using an adeno-associated virus vector, systemic over-expression of esRAGE afforded significant protection from all parameters. No protection was achieved by a control vector which expressed human serum albumin. Administration of A Box was similarly protective against development of DN. To determine the mechanism(s) of protection, we found that whilst deficiency of TLR2, TLR4 or RAGE afforded partial protection from development of DN, over-expression of esRAGE provided additional protection in TLR2−/−, modest protection against podocyte damage only in TLR4−/− and no protection in RAGE−/− diabetic mice, suggesting the protection provided by esRAGE was primarily through interruption of RAGE and TLR4 pathways. We conclude that strategies to block the interaction between HMGB1 and its receptors may be effective in preventing the development of DN.
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Affiliation(s)
- Xiaochen Chen
- Kidney Node Laboratory, Charles Perkins Centre, The University of Sydney, Sydney, NSW, Australia
| | - Jin Ma
- Kidney Node Laboratory, Charles Perkins Centre, The University of Sydney, Sydney, NSW, Australia
| | - Tony Kwan
- Kidney Node Laboratory, Charles Perkins Centre, The University of Sydney, Sydney, NSW, Australia
| | - Elisabeth G D Stribos
- Kidney Node Laboratory, Charles Perkins Centre, The University of Sydney, Sydney, NSW, Australia
| | - A Lianne Messchendorp
- Kidney Node Laboratory, Charles Perkins Centre, The University of Sydney, Sydney, NSW, Australia
| | - Yik W Loh
- Kidney Node Laboratory, Charles Perkins Centre, The University of Sydney, Sydney, NSW, Australia
| | - Xiaoyu Wang
- Kidney Node Laboratory, Charles Perkins Centre, The University of Sydney, Sydney, NSW, Australia
| | - Moumita Paul
- Transplantation Immunobiology Group, Sydney Medical School, The University of Sydney, Sydney, NSW, Australia
| | - Eithne C Cunningham
- Transplantation Immunobiology Group, Sydney Medical School, The University of Sydney, Sydney, NSW, Australia
| | - Miriam Habib
- Transplantation Immunobiology Group, Sydney Medical School, The University of Sydney, Sydney, NSW, Australia
| | - Ian E Alexander
- Gene Therapy Research Unit, Children's Medical Research Institute and The Children's Hospital at Westmead, Westmead, NSW, Australia.,Discipline of Child and Adolescent Health, The University of Sydney, Westmead, NSW, Australia
| | - Alexandra F Sharland
- Transplantation Immunobiology Group, Sydney Medical School, The University of Sydney, Sydney, NSW, Australia
| | - Steven J Chadban
- Kidney Node Laboratory, Charles Perkins Centre, The University of Sydney, Sydney, NSW, Australia.,Department of Renal Medicine, Royal Prince Alfred Hospital, Sydney, NSW, Australia
| | - Huiling Wu
- Kidney Node Laboratory, Charles Perkins Centre, The University of Sydney, Sydney, NSW, Australia. .,Department of Renal Medicine, Royal Prince Alfred Hospital, Sydney, NSW, Australia.
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