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Delrue C, Delanghe JR, Speeckaert MM. The role of sRAGE in cardiovascular diseases. Adv Clin Chem 2023; 117:53-102. [PMID: 37973322 DOI: 10.1016/bs.acc.2023.08.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2023]
Abstract
Advanced glycation end products (AGEs), by-products of glucose metabolism, have been linked to the emergence of cardiovascular disorders (CVD). AGEs can cause tissue damage in four different ways: (1) by altering protein function, (2) by crosslinking proteins, which makes tissue stiffer, (3) by causing the generation of free radicals, and (4) by activating an inflammatory response after binding particular AGE receptors, such as the receptor for advanced glycation end products (RAGE). It is suggested that the soluble form of RAGE (sRAGE) blocks ligand-mediated pro-inflammatory and oxidant activities by serving as a decoy. Therefore, several studies have investigated the possible anti-inflammatory and anti-oxidant characteristics of sRAGE, which may help lower the risk of CVD. According to the results of various studies, the relationship between circulating sRAGE, cRAGE, and esRAGE and CVD is inconsistent. To establish the potential function of sRAGE as a therapeutic target in the treatment of cardiovascular illnesses, additional studies are required to better understand the relationship between sRAGE and CVD. In this review, we explored the potential function of sRAGE in different CVD, highlighting unanswered concerns and outlining the possibilities for further investigation.
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Affiliation(s)
- Charlotte Delrue
- Department of Nephrology, Ghent University Hospital, Ghent, Belgium
| | - Joris R Delanghe
- Department of Diagnostic Sciences, Ghent University, Ghent, Belgium
| | - Marijn M Speeckaert
- Department of Nephrology, Ghent University Hospital, Ghent, Belgium; Research Foundation-Flanders (FWO), Brussels, Belgium.
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2
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Xiong X, Dou J, Shi J, Ren Y, Wang C, Zhang Y, Cui Y. RAGE inhibition alleviates lipopolysaccharides-induced lung injury via directly suppressing autophagic apoptosis of type II alveolar epithelial cells. Respir Res 2023; 24:24. [PMID: 36691012 PMCID: PMC9872382 DOI: 10.1186/s12931-023-02332-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2022] [Accepted: 01/17/2023] [Indexed: 01/25/2023] Open
Abstract
BACKGROUND Advanced glycation end product receptor (RAGE) acts as a receptor of pro-inflammatory ligands and is highly expressed in alveolar epithelial cells (AECs). Autophagy in AECs has received much attention recently. However, the roles of autophagy and RAGE in the pathogenesis of acute lung injury remain unclear. Therefore, this study aimed to explore whether RAGE activation signals take part in the dysfunction of alveolar epithelial barrier through autophagic death. METHODS Acute lung injury animal models were established using C57BL/6 and Ager gene knockout (Ager -/- mice) mice in this study. A549 cells and primary type II alveolar epithelial (ATII) cells were treated with siRNA to reduce Ager gene expression. Autophagy was inhibited by 3-methyladenine (3-MA). Lung injury was assessed by histopathological examination. Cell viability was estimated by cell counting kit-8 (CCK-8) assay. The serum and bronchoalveolar lavage fluid (BALF) levels of interleukin (IL)-6, IL-8 and soluble RAGE (sRAGE) were evaluated by Enzyme-linked immunosorbent assay (ELISA). The involvement of RAGE signals, autophagy and apoptosis was assessed using western blots, immunohistochemistry, immunofluorescence, transmission electron microscopy and TUNEL test. RESULTS The expression of RAGE was promoted by lipopolysaccharide (LPS), which was associated with activation of autophagy both in mice lung tissues and A549 cells as well as primary ATII cells. sRAGE in BALF was positively correlated with IL-6 and IL-8 levels. Compared with the wild-type mice, inflammation and apoptosis in lung tissues were alleviated in Ager-/- mice. Persistently activated autophagy contributed to cell apoptosis, whereas the inhibition of autophagy by 3-MA protected lungs from damage. In addition, Ager knockdown inhibited LPS-induced autophagy activation and attenuated lung injury. In vitro, knockdown of RAGE significantly suppressed the activation of LPS-induced autophagy and apoptosis of A549 and primary ATII cells. Furthermore, RAGE activated the downstream STAT3 signaling pathway. CONCLUSION RAGE plays an essential role in the pathogenesis of ATII cells injury. Our results suggested that RAGE inhibition alleviated LPS-induced lung injury by directly suppressing autophagic apoptosis of alveolar epithelial cells.
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Affiliation(s)
- Xi Xiong
- grid.16821.3c0000 0004 0368 8293Department of Critical Care Medicine, Shanghai Children’s Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200062 China ,grid.16821.3c0000 0004 0368 8293Institute of Pediatric Infection, Immunity and Intensive Care Medicine, Shanghai Jiao Tong University, Shanghai, 200062 China
| | - Jiaying Dou
- grid.16821.3c0000 0004 0368 8293Department of Critical Care Medicine, Shanghai Children’s Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200062 China ,grid.16821.3c0000 0004 0368 8293Institute of Pediatric Infection, Immunity and Intensive Care Medicine, Shanghai Jiao Tong University, Shanghai, 200062 China
| | - Jingyi Shi
- grid.16821.3c0000 0004 0368 8293Department of Critical Care Medicine, Shanghai Children’s Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200062 China ,grid.16821.3c0000 0004 0368 8293Institute of Pediatric Critical Care, Shanghai Jiao Tong University, Shanghai, 200062 China
| | - Yuqian Ren
- grid.16821.3c0000 0004 0368 8293Department of Critical Care Medicine, Shanghai Children’s Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200062 China ,grid.16821.3c0000 0004 0368 8293Institute of Pediatric Critical Care, Shanghai Jiao Tong University, Shanghai, 200062 China
| | - Chunxia Wang
- grid.16821.3c0000 0004 0368 8293Institute of Pediatric Infection, Immunity and Intensive Care Medicine, Shanghai Jiao Tong University, Shanghai, 200062 China ,grid.16821.3c0000 0004 0368 8293Institute of Pediatric Critical Care, Shanghai Jiao Tong University, Shanghai, 200062 China ,grid.415625.10000 0004 0467 3069Clinical Research Unit, Shanghai Children’s Hospital, Shanghai, 200062 China
| | - Yucai Zhang
- grid.16821.3c0000 0004 0368 8293Department of Critical Care Medicine, Shanghai Children’s Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200062 China ,grid.16821.3c0000 0004 0368 8293Institute of Pediatric Infection, Immunity and Intensive Care Medicine, Shanghai Jiao Tong University, Shanghai, 200062 China ,grid.16821.3c0000 0004 0368 8293Institute of Pediatric Critical Care, Shanghai Jiao Tong University, Shanghai, 200062 China
| | - Yun Cui
- grid.16821.3c0000 0004 0368 8293Department of Critical Care Medicine, Shanghai Children’s Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200062 China ,grid.16821.3c0000 0004 0368 8293Institute of Pediatric Infection, Immunity and Intensive Care Medicine, Shanghai Jiao Tong University, Shanghai, 200062 China ,grid.16821.3c0000 0004 0368 8293Institute of Pediatric Critical Care, Shanghai Jiao Tong University, Shanghai, 200062 China
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Omolaoye TS, du Plessis SS. Male infertility: A proximate look at the advanced glycation end products. Reprod Toxicol 2020; 93:169-177. [DOI: 10.1016/j.reprotox.2020.02.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2019] [Revised: 12/19/2019] [Accepted: 02/05/2020] [Indexed: 01/07/2023]
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4
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Le Bagge S, Fotheringham AK, Leung SS, Forbes JM. Targeting the receptor for advanced glycation end products (RAGE) in type 1 diabetes. Med Res Rev 2020; 40:1200-1219. [PMID: 32112452 DOI: 10.1002/med.21654] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2019] [Revised: 11/09/2019] [Accepted: 11/12/2019] [Indexed: 12/18/2022]
Abstract
Type 1 diabetes (T1D) is one of the most common chronic diseases manifesting in early life, with the prevalence increasing worldwide at a rate of approximately 3% per annum. The prolonged hyperglycaemia characteristic of T1D upregulates the receptor for advanced glycation end products (RAGE) and accelerates the formation of RAGE ligands, including advanced glycation end products, high-mobility group protein B1, S100 calcium-binding proteins, and amyloid-beta. Interestingly, changes in the expression of RAGE and these ligands are evident in patients before the onset of T1D. RAGE signals via various proinflammatory cascades, resulting in the production of reactive oxygen species and cytokines. A large number of proinflammatory ligands that can signal via RAGE have been implicated in several chronic diseases, including T1D. Therefore, it is unsurprising that RAGE has become a potential therapeutic target for the treatment and prevention of disease. In this review, we will explore how RAGE might be targeted to prevent the development of T1D.
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Affiliation(s)
- Selena Le Bagge
- Glycation and Diabetes, Translational Research Institute (TRI), Mater Research Institute-The University of Queensland (MRI-UQ), Brisbane, Queensland, Australia.,School of Biomedical Sciences, The University of Queensland, Brisbane, Queensland, Australia
| | - Amelia K Fotheringham
- Glycation and Diabetes, Translational Research Institute (TRI), Mater Research Institute-The University of Queensland (MRI-UQ), Brisbane, Queensland, Australia.,School of Biomedical Sciences, The University of Queensland, Brisbane, Queensland, Australia
| | - Sherman S Leung
- Glycation and Diabetes, Translational Research Institute (TRI), Mater Research Institute-The University of Queensland (MRI-UQ), Brisbane, Queensland, Australia.,School of Biomedical Sciences, The University of Queensland, Brisbane, Queensland, Australia
| | - Josephine M Forbes
- Glycation and Diabetes, Translational Research Institute (TRI), Mater Research Institute-The University of Queensland (MRI-UQ), Brisbane, Queensland, Australia.,Baker IDI Heart and Diabetes Institute, Melbourne, Victoria, Australia.,Mater Clinical School, The University of Queensland, Brisbane, Queensland, Australia
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5
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Zhang X, Cao X, Dang M, Wang H, Chen B, Du F, Li H, Zeng X, Guo C. Soluble receptor for advanced glycation end-products enhanced the production of IFN-γ through the NF-κB pathway in macrophages recruited by ischemia/reperfusion. Int J Mol Med 2019; 43:2507-2515. [PMID: 30942429 DOI: 10.3892/ijmm.2019.4152] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2018] [Accepted: 03/21/2019] [Indexed: 11/06/2022] Open
Abstract
The current study investigated the role of sRAGE in the production of IFN‑γ in macrophages with I/R treatment. The number of macrophages in myocardial tissues treated with I/R with or without sRAGE was determined via immunohistochemical staining. Proliferative activity of macrophages was analyzed by a 5‑BrdU incorporation assay. Differentiation of macrophages was detected via immunofluorescence staining of iNOS (M1 macrophage marker). IFN‑γ production, due to sRAGE stimulation, in Raw 264.7 macrophages and the NF‑κB signaling pathway were measured using western blotting. A ChIP assay was used to examine the interactions between NF‑κB and the promoter of IFN‑γ. The results showed that the number of macrophages in I/R‑treated myocardial tissues was increased following sRAGE infusion. Proliferation of macrophages was increased significantly in the presence of sRAGE; after I/R treatment, the cells preferred to differentiate into M1 macrophages. IFN‑γ expression in Raw 264.7 macrophages was suppressed by an NF‑κB inhibitor (Bay117082) but enhanced by sRAGE, with or without I/R treatment. Furthermore, sRAGE increased the phosphorylation of IκB, IKK and NF‑κB, as well as the translocation of NF‑κB into the nucleus of Raw 264.7 macrophages, with or without I/R treatment. ChIP results showed that sRAGE promoted NF‑κB binding to the promoter of IFN‑γ in Raw 264.7 macrophages. Therefore, the findings of the present study indicated that sRAGE protected the heart from I/R injuries, which might be mediated by promoting infiltration and the differentiation of macrophages into M1, which would then synthesize and secrete IFN‑γ through activating the NF‑κB signaling pathway.
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Affiliation(s)
- Xiuling Zhang
- Department of Cardiology, Beijing Tian Tan Hospital, Capital Medical University, Beijing 100070, P.R. China
| | - Xianxian Cao
- Department of Cardiology, Beijing Tian Tan Hospital, Capital Medical University, Beijing 100070, P.R. China
| | - Mengqiu Dang
- Department of Cardiology, Beijing Tian Tan Hospital, Capital Medical University, Beijing 100070, P.R. China
| | - Hongxia Wang
- Department of Physiology and Pathophysiology, Capital Medical University, Beijing 100069, P.R. China
| | - Buxing Chen
- Department of Cardiology, Beijing Tian Tan Hospital, Capital Medical University, Beijing 100070, P.R. China
| | - Fenghe Du
- Department of Cardiology, Beijing Tian Tan Hospital, Capital Medical University, Beijing 100070, P.R. China
| | - Huihua Li
- Department of Cardiology, Institute of Cardiovascular Disease, First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning 116011, P.R. China
| | - Xiangjun Zeng
- Department of Physiology and Pathophysiology, Capital Medical University, Beijing 100069, P.R. China
| | - Caixia Guo
- Department of Cardiology, Beijing Tian Tan Hospital, Capital Medical University, Beijing 100070, P.R. China
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6
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Dang M, Zeng X, Chen B, Wang H, Li H, Du F, Guo C. Interferon-γ mediates the protective effects of soluble receptor for advanced glycation end-product in myocardial ischemia/reperfusion. J Transl Med 2019; 99:358-370. [PMID: 30089851 DOI: 10.1038/s41374-018-0102-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2018] [Revised: 05/29/2018] [Accepted: 06/01/2018] [Indexed: 01/22/2023] Open
Abstract
The ubiquitin-proteasome system (UPS) is essential for protein degradation and plays critical roles in myocardial ischemia/reperfusion (MI/R) injuries. Previous studies have demonstrated that the soluble receptor for advanced glycation end-product (sRAGE) inhibited MI/R-induced apoptosis by upregulating proteasome subunits. However, the mechanism remains unknown. An MI/R model was established by left anterior descending (LAD) coronary artery ligation in mice. Recombinant sRAGE protein or saline was injected intramyocardially with or without neutralizing interferon-γ (IFN-γ) antibody injected intraperitoneally before ligation. In cardiomyocytes, ischemia was simulated with "ischemia buffer" and sRAGE was overexpressed by adenovirus. Adenovirus expressing the interference RNA of β5i was used to knockdown β5i in cardiomyocytes. IFN-γ was induced by sRAGE both in sham and MI/R mice. Blockade of IFN-γ using IFN-γ antibody abolished the rescue effects of sRAGE for cardiac dysfunction, infarct size and apoptosis provoked by MI/R. Blockade of IFN-γ reversed the upregulation of β1i and β5i expression induced by sRAGE during MI/R in heart, accompanied by decreasing chymotrypsin-like proteasome activity. In addition, IFN-γ antibody abolished the suppressing effect of sRAGE on MI/R-induced p38 and c-Jun N-terminal kinase (JNK) activation, as well as p53 expression, both in vivo and in vitro. However, knockdown of β5i abolished the antiapoptosis effect of sRAGE during hypoxia/reoxygenation (H/R) in vitro, accompanied by decreased degradation of p53. Our data suggest a novel mechanism for sRAGE in preventing MI/R-induced apoptosis in heart: sRAGE inhibits MI/R-induced apoptosis in cardiomyocytes by degrading p53 by β5i subunit that is increased via upregulation of IFN-γ.
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Affiliation(s)
- Mengqiu Dang
- Department of Cardiology, Beijing Tian Tan Hospital, Capital Medical University, 6 Tiantan Xili, Dongcheng District, 100050, Beijing, China
| | - Xiangjun Zeng
- Department of Physiology and Pathophysiology, Capital Medical University, 100069, Beijing, China
| | - Buxing Chen
- Department of Cardiology, Beijing Tian Tan Hospital, Capital Medical University, 6 Tiantan Xili, Dongcheng District, 100050, Beijing, China
| | - Hongxia Wang
- Department of Physiology and Pathophysiology, Capital Medical University, 100069, Beijing, China
| | - Huihua Li
- Department of Cardiology, Institute of Cardiovascular Disease, First Affiliated Hospital of Dalian Medical University, 116011, Dalian, China.,Department of Nutrition and Food Hygiene, School of Public Health, Advanced Institute of Medical Sciences, Dalian Medical University, 116044, Dalian, China
| | - Fenghe Du
- Department of Cardiology, Beijing Tian Tan Hospital, Capital Medical University, 6 Tiantan Xili, Dongcheng District, 100050, Beijing, China. .,Department of Geriatrics, Beijing Tian Tan Hospital, Capital Medical University, 6 Tiantan Xili, Dongcheng District, 100050, Beijing, China.
| | - Caixia Guo
- Department of Cardiology, Beijing Tian Tan Hospital, Capital Medical University, 6 Tiantan Xili, Dongcheng District, 100050, Beijing, China.
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7
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Grohová A, Dáňová K, Špíšek R, Palová-Jelínková L. Cell Based Therapy for Type 1 Diabetes: Should We Take Hyperglycemia Into Account? Front Immunol 2019; 10:79. [PMID: 30804929 PMCID: PMC6370671 DOI: 10.3389/fimmu.2019.00079] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2018] [Accepted: 01/11/2019] [Indexed: 12/16/2022] Open
Abstract
Diabetes mellitus is characterized by long standing hyperglycemia leading to numerous life-threatening complications. For type 1 diabetes mellitus, resulting from selective destruction of insulin producing cells by exaggerated immune reaction, the only effective therapy remains exogenous insulin administration. Despite accurate compliance to treatment of certain patients, transient episodes of hyperglycemia cannot be completely eliminated by this symptomatic treatment. Novel immunotherapeutic approaches based on tolerogenic dendritic cells, T regulatory cells and mesenchymal stem cells (MSCs) have been tested in clinical trials, endeavoring to directly modulate the autoimmune destruction process in pancreas. However, hyperglycemia itself affects the immune system and the final efficacy of cell-based immunotherapies could be affected by the different glycemic control of enrolled patients. The present review explores the impact of hyperglycemia on immune cells while providing greater insight into the molecular mechanisms of high glucose action and subsequent metabolic reprogramming of different immune cells. Furthermore, over-production of mitochondrial reactive oxygen species, formation of advanced glycation end products as a consequence of hyperglycemia and their downstream signalization in immune cells are also discussed. Since hyperglycemia in patients with type 1 diabetes mellitus might have an impact on immune-interventional treatment, the maintenance of a tight glucose control seems to be beneficial in patients considered for cell-based therapy.
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Affiliation(s)
- Anna Grohová
- SOTIO a.s., Prague, Czechia.,Department of Immunology, Second Faculty of Medicine, University Hospital Motol, Charles University in Prague, Prague, Czechia.,Department of Pediatrics, Charles University in Prague, Second Faculty of Medicine, University Hospital Motol, Prague, Czechia
| | - Klára Dáňová
- SOTIO a.s., Prague, Czechia.,Department of Immunology, Second Faculty of Medicine, University Hospital Motol, Charles University in Prague, Prague, Czechia
| | - Radek Špíšek
- SOTIO a.s., Prague, Czechia.,Department of Immunology, Second Faculty of Medicine, University Hospital Motol, Charles University in Prague, Prague, Czechia
| | - Lenka Palová-Jelínková
- SOTIO a.s., Prague, Czechia.,Department of Immunology, Second Faculty of Medicine, University Hospital Motol, Charles University in Prague, Prague, Czechia
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Abstract
PURPOSE OF REVIEW The receptor for advanced glycation end products (RAGE) and several of its ligands have been implicated in the onset and progression of pathologies associated with aging, chronic inflammation, and cellular stress. In particular, the role of RAGE and its ligands in bone tissue during both physiological and pathological conditions has been investigated. However, the extent to which RAGE signaling regulates bone homeostasis and disease onset remains unclear. Further, RAGE effects in the different bone cells and whether these effects are cell-type specific is unknown. The objective of the current review is to describe the literature over RAGE signaling in skeletal biology as well as discuss the clinical potential of RAGE as a diagnostic and/or therapeutic target in bone disease. RECENT FINDINGS The role of RAGE and its ligands during skeletal homeostasis, tissue repair, and disease onset/progression is beginning to be uncovered. For example, detrimental effects of the RAGE ligands, advanced glycation end products (AGEs), have been identified for osteoblast viability/activity, while others have observed that low level AGE exposure stimulates osteoblast autophagy, which subsequently promotes viability and function. Similar findings have been reported with HMGB1, another RAGE ligand, in which high levels of the ligand are associated with osteoblast/osteocyte apoptosis, whereas low level/short-term administration stimulates osteoblast differentiation/bone formation and promotes fracture healing. Additionally, elevated levels of several RAGE ligands (AGEs, HMGB1, S100 proteins) induce osteoblast/osteocyte apoptosis and stimulate cytokine production, which is associated with increased osteoclast differentiation/activity. Conversely, direct RAGE-ligand exposure in osteoclasts may have inhibitory effects. These observations support a conclusion that elevated bone resorption observed in conditions of high circulating ligands and RAGE expression are due to actions on osteoblasts/osteocytes rather than direct actions on osteoclasts, although additional work is required to substantiate the observations. Recent studies have demonstrated that RAGE and its ligands play an important physiological role in the regulation of skeletal development, homeostasis, and repair/regeneration. Conversely, elevated levels of RAGE and its ligands are clearly related with various diseases associated with increased bone loss and fragility. However, despite the recent advancements in the field, many questions regarding RAGE and its ligands in skeletal biology remain unanswered.
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Affiliation(s)
- Lilian I Plotkin
- Department of Anatomy and Cell Biology, Indiana University School of Medicine, 635 Barnhill Dr., MS 5023, Indianapolis, IN, 46202, USA.
- Roudebush Veterans Administration Medical Center, Indianapolis, IN, USA.
- Indiana Center for Musculoskeletal Health, Indianapolis, IN, USA.
| | - Alyson L Essex
- Department of Anatomy and Cell Biology, Indiana University School of Medicine, 635 Barnhill Dr., MS 5023, Indianapolis, IN, 46202, USA
- Indiana Center for Musculoskeletal Health, Indianapolis, IN, USA
| | - Hannah M Davis
- Department of Anatomy and Cell Biology, Indiana University School of Medicine, 635 Barnhill Dr., MS 5023, Indianapolis, IN, 46202, USA
- Indiana Center for Musculoskeletal Health, Indianapolis, IN, USA
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Guo CX, Jiang X, Zeng XJ, Wang HX, Li HH, Du FH, Chen BX. Soluble receptor for advanced glycation end-products protects against ischemia/reperfusion-induced myocardial apoptosis via regulating the ubiquitin proteasome system. Free Radic Biol Med 2016; 94:17-26. [PMID: 26878774 DOI: 10.1016/j.freeradbiomed.2016.02.011] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/29/2015] [Revised: 01/14/2016] [Accepted: 02/09/2016] [Indexed: 01/16/2023]
Abstract
AIM Apoptosis participated in the pathological process of myocardial ischemia/reperfusion (I/R) injury. Previous studies have reported that endogenous substance sRAGE protect against I/R injury through inhibiting myocardial apoptosis. But the mechanisms are currently unknown. Prior work has demonstrated that ubiquitin proteasome system (UPS) dysfunction is closely related to apoptosis. We explored the potential role of UPS in the effect of sRAGE inhibition on I/R-induced myocardial apoptosis. METHODS AND RESULTS Adult male C57BL mice treated with sRAGE (100μg/day, i.p.) or saline were performed to ligate left anterior descending coronary artery (LAD) as an in vivo model. As an in vitro model, primary murine cardiomyocytes pretreated with sRAGE or sRAGE-containing adenovirus were simulated I/R by "ischemia buffer". The TUNEL and caspase-3 activity were assessed. Also the activity and expression of proteasome were detected. sRAGE decreased the number of TUNEL-positive cardiomyocytes and caspase-3 activity, however, the inhibition of sRAGE on I/R-induced apoptosis was abolished by proteasome inhibitor Bortezimb (BTZ). sRAGE inhibited the decreased proteasome activity, also the reduction in protein and gene levels of β1i and β5i following I/R. Suppression of STAT3 blocked the inhibition of sRAGE on apoptosis induced by I/R. The chromatin immunoprecipitation (CHIP) results confirmed that sRAGE promoted activating STAT3 binding to β1i and β5i promoter. CONCLUSIONS Our data suggest that the inhibition of sRAGE on I/R-induced apoptosis is associated with activation and expression of proteasome, including improved proteasome activity and elevated β1i and β5i expression mediated by STAT3 activation. We predict that sRAGE is a novel intervention to target UPS activation for preventing and treating myocardial apoptosis.
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Affiliation(s)
- Cai-Xia Guo
- Department of Cardiology, Beijing Tian Tan Hospital, Capital Medical University, 6 Tiantan Xili, Dongcheng District, Beijing 100050, China.
| | - Xue Jiang
- Department of Cardiology, Beijing Tian Tan Hospital, Capital Medical University, 6 Tiantan Xili, Dongcheng District, Beijing 100050, China
| | - Xiang-Jun Zeng
- Department of Physiology and Pathophysiology, Capital Medical University, Beijing 100069, China
| | - Hong-Xia Wang
- Department of Physiology and Pathophysiology, Capital Medical University, Beijing 100069, China
| | - Hui-Hua Li
- Institute of Cardiovascular Diseases, First Affiliated Hospital of Dalian Medical University, Dalian 116011, China
| | - Feng-He Du
- Department of Cardiology, Department of Geriatrics, Beijing Tian Tan Hospital, Capital Medical University, Beijing 100050, China
| | - Bu-Xing Chen
- Department of Cardiology, Beijing Tian Tan Hospital, Capital Medical University, 6 Tiantan Xili, Dongcheng District, Beijing 100050, China.
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Marungruang N, Fåk F, Tareke E. Heat-treated high-fat diet modifies gut microbiota and metabolic markers in apoe-/- mice. Nutr Metab (Lond) 2016; 13:22. [PMID: 26973703 PMCID: PMC4788960 DOI: 10.1186/s12986-016-0083-0] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2016] [Accepted: 03/06/2016] [Indexed: 02/08/2023] Open
Abstract
Background High-fat diet has been known to have adverse effects on metabolic markers, as well as the gut microbiota. However, the effect of heat processing of high-fat diet, which leads to formations of advanced glycation end products (AGEs) has not been clearly distinguished from the effect of unheated fat. This study compared the effect of high-fat diet with heat-treated high-fat diet on adiposity, atherosclerosis and gut microbiota composition in the caecum of apoe−/− mice. Method Male apoe−/− mice were fed either low-fat (LF) control diet, high-fat (40 E% saturated fat, HF) control diet, or heat-treated high-fat (200 °C for 10 min, HT) diet, for 8 weeks. The plasma samples were used in the analysis of Nε-carboxy-methyl-lysine (CML) and Nε-carboxy-ethyl-lysine (CEL). The heart samples were analysed for atherosclerotic plaques, and the DNA from caecum was extracted and analysed for microbiota composition using 16S rRNA gene sequencing on a Miseq instrument. Additionally, the functions of microbial communities were also predicted based on the bacterial 16S rRNA gene sequence using Phylogenetic Investigation of Communities by Reconstruction of Unobserved States (PICRUSt). Results Here we found that HT modifies gut microbiota composition and host adiposity. Prediction of bacterial gene functions based on 16S rRNA gene sequence revealed that HF increased bacterial genera enriched in lipid metabolism genes, while HT did not. Plasma CML and CEL increased 1.7 and 2.5 times, respectively, in mice fed HT as compared to mice fed HF. Despite lower adiposity, mice fed HT maintained atherosclerosis and displayed enlarged spleens. Conclusions The results suggested that heat processing of high-fat diet modifies the substrates reaching the lower gut of apoe−/− mice, resulting in different effects on gut microbiota composition. AGEs seem to maintain the effect on atherosclerosis, despite lower adiposity, and causing enlarged spleens, which possibly reflect elevated levels of inflammation in the body. Electronic supplementary material The online version of this article (doi:10.1186/s12986-016-0083-0) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Nittaya Marungruang
- Food for Health Science Centre, Lund University, Medicon Village, Scheelevägen 2, SE-223 81 Lund, Sweden
| | - Frida Fåk
- Food for Health Science Centre, Lund University, Medicon Village, Scheelevägen 2, SE-223 81 Lund, Sweden
| | - Eden Tareke
- Food for Health Science Centre, Lund University, Medicon Village, Scheelevägen 2, SE-223 81 Lund, Sweden
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11
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Jiang X, Guo CX, Zeng XJ, Li HH, Chen BX, Du FH. A soluble receptor for advanced glycation end-products inhibits myocardial apoptosis induced by ischemia/reperfusion via the JAK2/STAT3 pathway. Apoptosis 2016; 20:1033-47. [PMID: 25894538 DOI: 10.1007/s10495-015-1130-4] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
sRAGE can protect cardiomyocytes from apoptosis induced by ischemia/reperfusion (I/R). However, the signaling mechanisms in cardioprotection by sRAGE are currently unknown. We investigated the cardioprotective effect and potential molecular mechanisms of sRAGE inhibition on apoptosis in the mouse myocardial I/R as an in vivo model and neonatal rat cardiomyocyte subjected to ischemic buffer as an in vitro model. Cardiac function and myocardial infarct size following by I/R were evaluated with echocardiography and Evans blue/2,3,5-triphenyltetrazolium chloride. Apoptosis was detected by TUNEL staining and caspase-3 activity. Expression of the apoptosis-related proteins p53, Bax, Bcl-2, JAK2/p-JAK2, STAT3/p-STAT3, AKT/p-AKT, ERK/p-ERK, STAT5A/p-STAT5A and STAT6/p-STAT6 were detected by western blot analysis in the presence and absence of the JAK2 inhibitor AG 490. sRAGE (100 µg/day) improved the heart function in mice with I/R: the left ventricular ejection fraction and fractional shortening were increased by 42 and 57%, respectively; the infarct size was decreased by 52%, the TUNEL-positive myocytes by 66%, and activity of caspase-3 by 24%, the protein expression of p53 and ratio of Bax to Bcl-2 by 29 and 88%, respectively; protein expression of the p-JAK2, p-STAT3 and p-AKT were increased by 92, 280 and 31%, respectively. sRAGE have no effect on protein expression of p-ERK1/2, p-STAT5A and p-STAT6 following by I/R. sRAGE (900 nmol/L) exhibited anti-apoptotic effects in cardiomyocytes by decreasing TUNEL-positive myocytes by 67% and caspase-3 activity by 20%, p53 protein level and the Bax/Bcl-2 ratio by 58 and 86%, respectively; increasing protein expression of the p-JAK2 and p-STAT3 by 26 and 156%, respectively, p-AKT protein level by 33%. The anti-apoptotic effects of sRAGE following I/R were blocked by JAK2 inhibitor AG 490. The effect of sRAGE reduction on TUNEL-positive myocytes and caspase-3 activity were abolished by PI3K inhibitor LY294002, but not ERK 1/2 inhibitor PD98059. These results suggest that sRAGE protects cardiomyocytes from apoptosis induced by I/R in vitro and in vivo by activating the JAK2/STAT3 signaling pathway.
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Affiliation(s)
- Xue Jiang
- Department of Cardiology, Beijing Tian Tan Hospital, Capital Medical University, 6 Tiantan Xili, Dongcheng District, Beijing, 100050, China
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Iannitti RG, Casagrande A, De Luca A, Cunha C, Sorci G, Riuzzi F, Borghi M, Galosi C, Massi-Benedetti C, Oury TD, Cariani L, Russo M, Porcaro L, Colombo C, Majo F, Lucidi V, Fiscarelli E, Ricciotti G, Lass-Flörl C, Ratclif L, Esposito A, De Benedictis FM, Donato R, Carvalho A, Romani L. Hypoxia promotes danger-mediated inflammation via receptor for advanced glycation end products in cystic fibrosis. Am J Respir Crit Care Med 2014; 188:1338-50. [PMID: 24127697 DOI: 10.1164/rccm.201305-0986oc] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
RATIONALE Hypoxia regulates the inflammatory-antiinflammatory balance by the receptor for advanced glycation end products (RAGE), a versatile sensor of damage-associated molecular patterns. The multiligand nature of RAGE places this receptor in the midst of chronic inflammatory diseases. OBJECTIVES To characterize the impact of the hypoxia-RAGE pathway on pathogenic airway inflammation preventing effective pathogen clearance in cystic fibrosis (CF) and elucidate the potential role of this danger signal in pathogenesis and therapy of lung inflammation. METHODS We used in vivo and in vitro models to study the impact of hypoxia on RAGE expression and activity in human and murine CF, the nature of the RAGE ligand, and the impact of RAGE on lung inflammation and antimicrobial resistance in fungal and bacterial pneumonia. MEASUREMENTS AND MAIN RESULTS Sustained expression of RAGE and its ligand S100B was observed in murine lung and human epithelial cells and exerted a proximal role in promoting inflammation in murine and human CF, as revealed by functional studies and analysis of the genetic variability of AGER in patients with CF. Both hypoxia and infections contributed to the sustained activation of the S100B-RAGE pathway, being RAGE up-regulated by hypoxia and S100B by infection by Toll-like receptors. Inhibiting the RAGE pathway in vivo with soluble (s) RAGE reduced pathogen load and inflammation in experimental CF, whereas sRAGE production was defective in patients with CF. CONCLUSIONS A causal link between hyperactivation of RAGE and inflammation in CF has been observed, such that targeting pathogenic inflammation alleviated inflammation in CF and measurement of sRAGE levels could be a useful biomarker for RAGE-dependent inflammation in patients with CF.
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Affiliation(s)
- Rossana G Iannitti
- 1 Department of Experimental Medicine and Biochemical Sciences, University of Perugia, Perugia, Italy
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Ott C, Jacobs K, Haucke E, Navarrete Santos A, Grune T, Simm A. Role of advanced glycation end products in cellular signaling. Redox Biol 2014; 2:411-29. [PMID: 24624331 PMCID: PMC3949097 DOI: 10.1016/j.redox.2013.12.016] [Citation(s) in RCA: 750] [Impact Index Per Article: 75.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2013] [Accepted: 12/19/2013] [Indexed: 12/18/2022] Open
Abstract
Improvements in health care and lifestyle have led to an elevated lifespan and increased focus on age-associated diseases, such as neurodegeneration, cardiovascular disease, frailty and arteriosclerosis. In all these chronic diseases protein, lipid or nucleic acid modifications are involved, including cross-linked and non-degradable aggregates, such as advanced glycation end products (AGEs). Formation of endogenous or uptake of dietary AGEs can lead to further protein modifications and activation of several inflammatory signaling pathways. This review will give an overview of the most prominent AGE-mediated signaling cascades, AGE receptor interactions, prevention of AGE formation and the impact of AGEs during pathophysiological processes.
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Key Words
- ADAMST, a disintegrin and metalloproteinase with a thrombospondin type 1 motif
- AGE, advanced glycation end products
- AGE-receptors
- Advanced glycation end products
- Age-associated diseases
- Aggregates
- Aging
- E, from embryonic day
- EGFR, epidermal growth factor receptor
- ERK, extracellular-signal regulated kinase
- F3NK, fructosamine 3-phosphokinase
- FKHRL1, forkhead transcription factor
- HDL, high density lipoprotein
- HMGB1, high-mobility-group-protein B1
- HNE, 4-hydroxy-trans-2-nonenal
- Jak1/2, Janus kinase 1/2
- LDL, low density lipoprotein
- MDA, malondialdehyde
- MEKK, mitogen-activated protein/ERK kinase kinases
- MnSOD, manganese superoxide dismutase
- NF-κB
- Nf-κB, nuclear factor-light-chain-enhancer of activated B
- Oxidative stress
- PIK3, phosphoinositol 3 kinase
- RAGE
- RAGE, receptor of AGEs
- RCC, reactive carbonyl compounds
- Reactive carbonyl compounds
- S100B, S100 calcium binding protein B
- SIRt1, NAD+-dependent deacetylase and survival factor 1
- SR-A, scavenger receptor class A
- Signaling
- Stat 1/2, signal transducers and activators of transcription 1/2
- VSMC, vascular smooth muscle cells
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Affiliation(s)
- Christiane Ott
- Department of Nutritional Toxicology, Institute of Nutrition, Friedrich Schiller University Jena, 07743 Jena, Germany
| | - Kathleen Jacobs
- Clinic for Cardiothoracic Surgery, University Hospital Halle (Saale), Martin-Luther-University of Halle-Wittenberg, Ernst-Grube Strasse 40, D-06120 Halle (Saale), Germany
| | - Elisa Haucke
- Institute for Anatomy and Cell Biology, Faculty of Medicine, Martin-Luther-University of Halle-Wittenberg, 06108 Halle (Saale), Germany
| | - Anne Navarrete Santos
- Institute for Anatomy and Cell Biology, Faculty of Medicine, Martin-Luther-University of Halle-Wittenberg, 06108 Halle (Saale), Germany
| | - Tilman Grune
- Department of Nutritional Toxicology, Institute of Nutrition, Friedrich Schiller University Jena, 07743 Jena, Germany
| | - Andreas Simm
- Clinic for Cardiothoracic Surgery, University Hospital Halle (Saale), Martin-Luther-University of Halle-Wittenberg, Ernst-Grube Strasse 40, D-06120 Halle (Saale), Germany
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