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Dong W, Yang X, Li X, Wei S, An C, Zhang J, Shi X, Dong S. Investigation of N-Glycan Functions in Receptor for Advanced Glycation End Products V Domain through Chemical Glycoprotein Synthesis. J Am Chem Soc 2024; 146:18270-18280. [PMID: 38917169 DOI: 10.1021/jacs.4c01413] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/27/2024]
Abstract
The receptor for advanced glycation end products (RAGE) plays a crucial role in inflammation-related pathways and various chronic diseases. Despite the recognized significance of N-glycosylation in the ligand-binding V domain (VD) of RAGE, a comprehensive understanding of the site-activity and structure-activity relationships is lacking due to the challenges in obtaining homogeneous glycoprotein samples through biological expression. Here, we combined chemical and chemoenzymatic approaches to synthesize RAGE-VD and its congeners with Asn3-glycosylation by incorporating precise N-glycan structures. Evaluation of these samples revealed that, in comparison to other RAGE-VD forms, α2,6-sialylated N-glycosylation at the Asn3 site results in more potent inhibition of HMGB1-induced nuclear factor-κB (NF-κB) expression in RAGE-overexpressing cells. Hydrogen/deuterium exchange-mass spectrum analysis revealed a sialylated RAGE-VD-induced interaction region within HMGB1. Conversely, Asn3 N-glycosylation in VD has negligible effects on RAGE-VD/S100B interactions. This study established an approach for accessing homogeneously glycosylated RAGE-VD and explored the modulatory effects of N-glycosylation on the interactions between RAGE-VD and its ligand proteins.
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Affiliation(s)
- Weidong Dong
- State Key Laboratory of Natural and Biomimetic Drugs, Chemical Biology Center, and Department of Chemical Biology at School of Pharmaceutical Sciences, Peking University, Beijing 100191, China
| | - Xingyue Yang
- State Key Laboratory of Natural and Biomimetic Drugs, Chemical Biology Center, and Department of Chemical Biology at School of Pharmaceutical Sciences, Peking University, Beijing 100191, China
| | - Xinyu Li
- State Key Laboratory of Natural and Biomimetic Drugs, Chemical Biology Center, and Department of Chemical Biology at School of Pharmaceutical Sciences, Peking University, Beijing 100191, China
| | - Sheng Wei
- State Key Laboratory of Natural and Biomimetic Drugs, Chemical Biology Center, and Department of Chemical Biology at School of Pharmaceutical Sciences, Peking University, Beijing 100191, China
| | - Chuanjing An
- State Key Laboratory of Natural and Biomimetic Drugs, Chemical Biology Center, and Department of Chemical Biology at School of Pharmaceutical Sciences, Peking University, Beijing 100191, China
| | - Jun Zhang
- State Key Laboratory of Natural and Biomimetic Drugs, Chemical Biology Center, and Department of Chemical Biology at School of Pharmaceutical Sciences, Peking University, Beijing 100191, China
| | - Xiaomeng Shi
- State Key Laboratory of Natural and Biomimetic Drugs, Chemical Biology Center, and Department of Chemical Biology at School of Pharmaceutical Sciences, Peking University, Beijing 100191, China
| | - Suwei Dong
- State Key Laboratory of Natural and Biomimetic Drugs, Chemical Biology Center, and Department of Chemical Biology at School of Pharmaceutical Sciences, Peking University, Beijing 100191, China
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Fricke-Galindo I, García-Carmona S, Alanis-Ponce J, Pérez-Rubio G, Ramírez-Venegas A, Montiel-Lopez F, Robles-Hernández R, Hernández-Zenteno RDJ, Valencia-Pérez Rea D, Bautista-Becerril B, Ramírez-Díaz ME, Cruz-Vicente F, Martínez-Gómez MDL, Sansores R, Falfán-Valencia R. sRAGE levels are decreased in plasma and sputum of COPD secondary to biomass-burning smoke and tobacco smoking: Differences according to the rs3134940 AGER variant. Heliyon 2024; 10:e28675. [PMID: 38571598 PMCID: PMC10988041 DOI: 10.1016/j.heliyon.2024.e28675] [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: 11/06/2023] [Revised: 03/12/2024] [Accepted: 03/21/2024] [Indexed: 04/05/2024] Open
Abstract
The receptor for advanced glycation end products (RAGE) and its gene (AGER) have been related to lung injury and inflammatory diseases, including chronic obstructive pulmonary disease (COPD). We aimed to evaluate the association of rs2071288, rs3134940, rs184003, and rs2070600 AGER single-nucleotide variants and the soluble-RAGE plasma and sputum levels with COPD secondary to biomass-burning smoke (BBS) and tobacco smoking. Four groups, including 2189 subjects, were analyzed: COPD secondary to BBS exposure (COPD-BBS, n = 342), BBS-exposed subjects without COPD (BBES, n = 774), tobacco smoking-induced COPD (COPD-TS, n = 434), and smokers without COPD (SWOC, n = 639). Allelic discrimination assays determined the AGER variants. The sRAGE was quantified in plasma (n = 240) and induced-sputum (n = 72) samples from a subgroup of patients using the ELISA technique. In addition, a meta-analysis was performed for the association of rs2070600 with COPD susceptibility. None of the studied genetic variants were found to be associated with COPD-BBS or COPD-TS. A marginal association was observed for the rs3134940 with COPD-BBS (p = 0.066). The results from the meta-analysis, including six case-control studies (n = 4149 subjects), showed a lack of association of rs2070600 with COPD susceptibility (p = 0.681), probably due to interethnic differences. The sRAGE plasma levels were lower in COPD-BBS compared to BBS and in COPD-TS compared to SWOC. The sRAGE levels were also lower in sputum samples from COPD-BBS than BBES. Subjects with rs3134940-TC genotypes exhibit lower sRAGE plasma levels than TT subjects, mainly from the COPD-BBS and SWOC groups. The AGER variants were not associated with COPD-BBS nor COPD-TS, but the sRAGE plasma and sputum levels are related to both COPD-BBS and COPD-TS and are influenced by the rs3134940 variant.
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Affiliation(s)
- Ingrid Fricke-Galindo
- HLA Laboratory, Instituto Nacional de Enfermedades Respiratorias Ismael Cosío Villegas, Mexico City, 14080, Mexico
| | - Salvador García-Carmona
- HLA Laboratory, Instituto Nacional de Enfermedades Respiratorias Ismael Cosío Villegas, Mexico City, 14080, Mexico
| | - Jesús Alanis-Ponce
- HLA Laboratory, Instituto Nacional de Enfermedades Respiratorias Ismael Cosío Villegas, Mexico City, 14080, Mexico
| | - Gloria Pérez-Rubio
- HLA Laboratory, Instituto Nacional de Enfermedades Respiratorias Ismael Cosío Villegas, Mexico City, 14080, Mexico
| | - Alejandra Ramírez-Venegas
- Tobacco Smoking and COPD Research Department, Instituto Nacional de Enfermedades Respiratorias Ismael Cosio Villegas, Mexico City, 14080, Mexico
| | - Francisco Montiel-Lopez
- Tobacco Smoking and COPD Research Department, Instituto Nacional de Enfermedades Respiratorias Ismael Cosio Villegas, Mexico City, 14080, Mexico
| | - Robinson Robles-Hernández
- Tobacco Smoking and COPD Research Department, Instituto Nacional de Enfermedades Respiratorias Ismael Cosio Villegas, Mexico City, 14080, Mexico
| | - Rafael de Jesús Hernández-Zenteno
- Tobacco Smoking and COPD Research Department, Instituto Nacional de Enfermedades Respiratorias Ismael Cosio Villegas, Mexico City, 14080, Mexico
| | - Daniela Valencia-Pérez Rea
- HLA Laboratory, Instituto Nacional de Enfermedades Respiratorias Ismael Cosío Villegas, Mexico City, 14080, Mexico
| | - Brandon Bautista-Becerril
- HLA Laboratory, Instituto Nacional de Enfermedades Respiratorias Ismael Cosío Villegas, Mexico City, 14080, Mexico
| | - María Elena Ramírez-Díaz
- Coordinación de Vigilancia Epidemiológica, Jurisdicción 06 Sierra, Tlacolula de Matamoros Oaxaca, Servicios de Salud de Oaxaca, Oaxaca, 70400, Mexico
| | - Filiberto Cruz-Vicente
- Internal Medicine Department, Hospital Civil Aurelio Valdivieso, Servicios de Salud de Oaxaca, Oaxaca, 68050, Mexico
| | | | - Raúl Sansores
- Clínica de Enfermedades Respiratorias, Fundación Médica Sur, Mexico City, 14080, Mexico
| | - Ramcés Falfán-Valencia
- HLA Laboratory, Instituto Nacional de Enfermedades Respiratorias Ismael Cosío Villegas, Mexico City, 14080, Mexico
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Lai SWT, Bhattacharya S, Lopez Gonzalez EDJ, Shuck SC. Methylglyoxal-Derived Nucleoside Adducts Drive Vascular Dysfunction in a RAGE-Dependent Manner. Antioxidants (Basel) 2024; 13:85. [PMID: 38247509 PMCID: PMC10812505 DOI: 10.3390/antiox13010085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2023] [Revised: 12/29/2023] [Accepted: 01/04/2024] [Indexed: 01/23/2024] Open
Abstract
Diabetic kidney disease (DKD) is a leading cause of death in patients with diabetes. An early precursor to DKD is endothelial cell dysfunction (ECD), which often precedes and exacerbates vascular disease progression. We previously discovered that covalent adducts formed on DNA, RNA, and proteins by the reactive metabolic by-product methylglyoxal (MG) predict DKD risk in patients with type 1 diabetes up to 16 years pre-diagnosis. However, the mechanisms by which MG adducts contribute to vascular disease onset and progression remain unclear. Here, we report that the most predominant MG-induced nucleoside adducts, N2-(1-carboxyethyl)-deoxyguanosine (CEdG) and N2-(1-carboxyethyl)-guanosine (CEG), drive endothelial dysfunction. Following CEdG or CEG exposure, primary human umbilical vein endothelial cells (HUVECs) undergo endothelial dysfunction, resulting in enhanced monocyte adhesion, increased reactive oxygen species production, endothelial permeability, impaired endothelial homeostasis, and exhibit a dysfunctional transcriptomic signature. These effects were discovered to be mediated through the receptor for advanced glycation end products (RAGE), as an inhibitor for intracellular RAGE signaling diminished these dysfunctional phenotypes. Therefore, we found that not only are MG adducts biomarkers for DKD, but that they may also have a role as potential drivers of vascular disease onset and progression and a new therapeutic modality.
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Affiliation(s)
- Seigmund Wai Tsuen Lai
- Department of Diabetes and Cancer Metabolism, Arthur Riggs Diabetes and Metabolism Research Institute, City of Hope Comprehensive Cancer Center, Duarte, CA 91010, USA; (S.W.T.L.); (E.D.J.L.G.)
| | - Supriyo Bhattacharya
- Department of Computational and Quantitative Medicine, City of Hope Comprehensive Cancer Center, Duarte, CA 91010, USA;
| | - Edwin De Jesus Lopez Gonzalez
- Department of Diabetes and Cancer Metabolism, Arthur Riggs Diabetes and Metabolism Research Institute, City of Hope Comprehensive Cancer Center, Duarte, CA 91010, USA; (S.W.T.L.); (E.D.J.L.G.)
| | - Sarah C. Shuck
- Department of Diabetes and Cancer Metabolism, Arthur Riggs Diabetes and Metabolism Research Institute, City of Hope Comprehensive Cancer Center, Duarte, CA 91010, USA; (S.W.T.L.); (E.D.J.L.G.)
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Neha, Wali Z, Pinky, Hattiwale SH, Jamal A, Parvez S. GLP-1/Sigma/RAGE receptors: An evolving picture of Alzheimer's disease pathology and treatment. Ageing Res Rev 2024; 93:102134. [PMID: 38008402 DOI: 10.1016/j.arr.2023.102134] [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] [Received: 09/03/2023] [Revised: 11/18/2023] [Accepted: 11/19/2023] [Indexed: 11/28/2023]
Abstract
According to the facts and figures 2023stated that 6.7 million Americans over the age of 65 have Alzheimer's disease (AD). The scenario of AD has reached up to the maximum, of 4.1 million individuals, 2/3rd are female patients, and approximately 1 in 9 adults over the age of 65 have dementia with AD dementia. The fact that there are now no viable treatments for AD indicates that the underlying disease mechanisms are not fully understood. The progressive neurodegenerative disease, AD is characterized by amyloid plaques and neurofibrillary tangles (NFTs) of abnormally hyperphosphorylated tau protein and senile plaques (SPs), which are brought on by the buildup of amyloid beta (Aβ). Numerous attempts have been made to produce compounds that interfere with these characteristics because of significant research efforts into the primary pathogenic hallmark of this disorder. Here, we summarize several research that highlights interesting therapy strategies and the neuroprotective effects of GLP-1, Sigma, and, AGE-RAGE receptors in pre-clinical and clinical AD models.
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Affiliation(s)
- Neha
- Department of Toxicology, School of Chemical & Life Sciences, Jamia Hamdard, New Delhi 110062, India.
| | - Zitin Wali
- Department of Toxicology, School of Chemical & Life Sciences, Jamia Hamdard, New Delhi 110062, India
| | - Pinky
- Department of Toxicology, School of Chemical & Life Sciences, Jamia Hamdard, New Delhi 110062, India.
| | - Shaheenkousar H Hattiwale
- Department of Basic Medical Sciences, College of Medicine, Majmaah University, Al-Majmaah 11952, Saudi Arabia
| | - Azfar Jamal
- Department of Biology, College of Science Al-Zulfi, Majmaah University, Al-Majmaah 11952, Saudi Arabia; Health and Basic Science Research Centre, Majmaah University, Al-Majmaah 11952, Saudi Arabia
| | - Suhel Parvez
- Department of Toxicology, School of Chemical & Life Sciences, Jamia Hamdard, New Delhi 110062, India.
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5
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Zhou J, Liu S, Bi S, Kong W, Qian R, Xie X, Zeng M, Jiang X, Liao Z, Shuai M, Liu W, Cheng L, Wu M. The RAGE signaling in osteoporosis. Biomed Pharmacother 2023; 165:115044. [PMID: 37354815 DOI: 10.1016/j.biopha.2023.115044] [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] [Received: 05/14/2023] [Revised: 06/16/2023] [Accepted: 06/20/2023] [Indexed: 06/26/2023] Open
Abstract
Osteoporosis (OP), characterized by an imbalance of bone remodeling between formation and resorption, has become a health issue worldwide. The receptor for advanced glycation end product (RAGE), a transmembrane protein in the immunoglobin family, has multiple ligands and has been involved in many chronic diseases, such as diabetes and OP. Increasing evidence shows that activation of the RAGE signaling negatively affects bone remodeling. Ligands, such as advanced glycation end products (AGEs), S100, β-amyloid (Aβ), and high mobility group box 1 (HMGB1), have been well documented that they may negatively regulate the proliferation and differentiation of osteoblasts and positively stimulate osteoclastogenesis by activating the expression of RAGE. In this review, we comprehensively discuss the structure of RAGE and its biological functions in the pathogenesis of OP. The research findings suggest that RAGE signaling has become a potential target for the therapeutic management of OP.
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Affiliation(s)
- Jianguo Zhou
- Department of Joint Surgery, Ganzhou People's Hospital, Ganzhou 341000, China.
| | - Shiwei Liu
- Department of Joint Surgery, Ganzhou People's Hospital, Ganzhou 341000, China
| | - Shengrong Bi
- Department of Joint Surgery, Ganzhou People's Hospital, Ganzhou 341000, China
| | - Weihao Kong
- Department of Joint Surgery, Ganzhou People's Hospital, Ganzhou 341000, China
| | - Rui Qian
- Department of Joint Surgery, Ganzhou People's Hospital, Ganzhou 341000, China
| | - Xunlu Xie
- Department of Pathology, Ganzhou People's Hospital, Ganzhou 341000, China
| | - Ming Zeng
- Department of Orthopedics, Ruijin Traditional Chinese Medicine Hospital, Ruijin 342500, China
| | - Xiaowei Jiang
- Department of Joint Surgery, Ningdu County People's Hospital, Ningdu 342800, China
| | - Zhibin Liao
- Department of Joint Surgery, Ningdu County People's Hospital, Ningdu 342800, China
| | - Ming Shuai
- Department of Orthopedics, Chongyi County People's Hospital, Chongyi 341300, China
| | - Wei Liu
- Department of Orthopedics, Ningdu County Traditional Chinese Medicine Hospital, Ningdu 342800, China
| | - Long Cheng
- Department of Orthopedics, Ningdu County Traditional Chinese Medicine Hospital, Ningdu 342800, China
| | - Moujian Wu
- Department of Orthopedics, Xingguo County Traditional Chinese Medicine Hospital, Xingguo 342400, China
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Pujals M, Mayans C, Bellio C, Méndez O, Greco E, Fasani R, Alemany-Chavarria M, Zamora E, Padilla L, Mitjans F, Nuciforo P, Canals F, Nonell L, Abad M, Saura C, Tabernero J, Villanueva J. RAGE/SNAIL1 signaling drives epithelial-mesenchymal plasticity in metastatic triple-negative breast cancer. Oncogene 2023; 42:2610-2628. [PMID: 37468678 DOI: 10.1038/s41388-023-02778-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Revised: 06/29/2023] [Accepted: 07/07/2023] [Indexed: 07/21/2023]
Abstract
Epithelial/Mesenchymal (E/M) plasticity plays a fundamental role both in embryogenesis and during tumorigenesis. The receptor for advanced glycation end products (RAGE) is a driver of cell plasticity in fibrotic diseases; however, its role and molecular mechanism in triple-negative breast cancer (TNBC) remains unclear. Here, we demonstrate that RAGE signaling maintains the mesenchymal phenotype of aggressive TNBC cells by enforcing the expression of SNAIL1. Besides, we uncover a crosstalk mechanism between the TGF-β and RAGE pathways that is required for the acquisition of mesenchymal traits in TNBC cells. Consistently, RAGE inhibition elicits epithelial features that block migration and invasion capacities. Next, since RAGE is a sensor of the tumor microenvironment, we modeled acute acidosis in TNBC cells and showed it promotes enhanced production of RAGE ligands and the activation of RAGE-dependent invasive properties. Furthermore, acute acidosis increases SNAIL1 levels and tumor cell invasion in a RAGE-dependent manner. Finally, we demonstrate that in vivo inhibition of RAGE reduces metastasis incidence and expands survival, consistent with molecular effects that support the relevance of RAGE signaling in E/M plasticity. These results uncover new molecular insights on the regulation of E/M phenotypes in cancer metastasis and provide rationale for pharmacological intervention of this signaling axis.
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Affiliation(s)
- Mireia Pujals
- Vall d'Hebron Institute of Oncology (VHIO), Vall d'Hebron Barcelona Hospital Campus, Barcelona, Spain
| | - Carla Mayans
- Vall d'Hebron Institute of Oncology (VHIO), Vall d'Hebron Barcelona Hospital Campus, Barcelona, Spain
- Universitat de Barcelona, Barcelona, Spain
| | - Chiara Bellio
- Vall d'Hebron Institute of Oncology (VHIO), Vall d'Hebron Barcelona Hospital Campus, Barcelona, Spain
| | - Olga Méndez
- Vall d'Hebron Institute of Oncology (VHIO), Vall d'Hebron Barcelona Hospital Campus, Barcelona, Spain
| | - Emanuela Greco
- Vall d'Hebron Institute of Oncology (VHIO), Vall d'Hebron Barcelona Hospital Campus, Barcelona, Spain
| | - Roberta Fasani
- Vall d'Hebron Institute of Oncology (VHIO), Vall d'Hebron Barcelona Hospital Campus, Barcelona, Spain
| | - Mercè Alemany-Chavarria
- Vall d'Hebron Institute of Oncology (VHIO), Vall d'Hebron Barcelona Hospital Campus, Barcelona, Spain
| | - Esther Zamora
- Medical Oncology Service, Vall d'Hebron Institute of Oncology (VHIO), Vall d'Hebron Barcelona Hospital Campus, Barcelona, Spain
- Universitat Autònoma de Barcelona, 08193, Bellaterra, Spain
| | - Laura Padilla
- LEITAT Technological Center, 08028, Barcelona, Spain
| | | | - Paolo Nuciforo
- Vall d'Hebron Institute of Oncology (VHIO), Vall d'Hebron Barcelona Hospital Campus, Barcelona, Spain
| | - Francesc Canals
- Vall d'Hebron Institute of Oncology (VHIO), Vall d'Hebron Barcelona Hospital Campus, Barcelona, Spain
| | - Lara Nonell
- Vall d'Hebron Institute of Oncology (VHIO), Vall d'Hebron Barcelona Hospital Campus, Barcelona, Spain
| | - María Abad
- Vall d'Hebron Institute of Oncology (VHIO), Vall d'Hebron Barcelona Hospital Campus, Barcelona, Spain
- Altos Labs Cambridge Institute of Science, Cambridge, UK
| | - Cristina Saura
- Medical Oncology Service, Vall d'Hebron Institute of Oncology (VHIO), Vall d'Hebron Barcelona Hospital Campus, Barcelona, Spain
- Universitat Autònoma de Barcelona, 08193, Bellaterra, Spain
| | - Josep Tabernero
- Medical Oncology Service, Vall d'Hebron Institute of Oncology (VHIO), Vall d'Hebron Barcelona Hospital Campus, Barcelona, Spain
- IOB Institute of Oncology, Quiron Group (Quiron-IOB), Barcelona, Spain
- University of Vic-Central University of Catalonia (UVic-UCC), Barcelona, Spain
- Centro de Investigación Biomédica en Red de Cáncer (CIBERONC), Instituto de Salud Carlos III, Madrid, Spain
| | - Josep Villanueva
- Vall d'Hebron Institute of Oncology (VHIO), Vall d'Hebron Barcelona Hospital Campus, Barcelona, Spain.
- Centro de Investigación Biomédica en Red de Cáncer (CIBERONC), Instituto de Salud Carlos III, Madrid, Spain.
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Chandrakumar S, Santiago Tierno I, Agarwal M, Matisioudis N, Kern TS, Ghosh K. Subendothelial Matrix Stiffening by Lysyl Oxidase Enhances RAGE-Mediated Retinal Endothelial Activation in Diabetes. Diabetes 2023; 72:973-985. [PMID: 37058096 PMCID: PMC10281239 DOI: 10.2337/db22-0761] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Accepted: 03/30/2023] [Indexed: 04/15/2023]
Abstract
Endothelial cell (EC) activation is a crucial determinant of retinal vascular inflammation associated with diabetic retinopathy (DR), a major microvascular complication of diabetes. We previously showed that, similar to abnormal biochemical factors, aberrant mechanical cues in the form of lysyl oxidase (LOX)-dependent subendothelial matrix stiffening also contribute significantly to retinal EC activation in diabetes. Yet, how LOX is itself regulated and precisely how it mechanically controls retinal EC activation in diabetes is poorly understood. Here, we show that high-glucose-induced LOX upregulation in human retinal ECs (HRECs) is mediated by proinflammatory receptor for advanced glycation end products (RAGE). HRECs treated with methylglyoxal (MGO), an active precursor to the advanced glycation end product (AGE) MG-H1, exhibited LOX upregulation that was blocked by a RAGE inhibitor, thus confirming the ability of RAGE to promote LOX expression. Crucially, as a downstream effector of RAGE, LOX was found to mediate both the proinflammatory and matrix remodeling effects of AGE/RAGE, primarily through its ability to crosslink or stiffen matrix. Finally, using decellularized HREC-derived matrices and a mouse model of diabetes, we demonstrate that LOX-dependent matrix stiffening feeds back to enhance RAGE, thereby achieving its autoregulation and proinflammatory effects. Collectively, these findings provide fresh mechanistic insights into the regulation and proinflammatory role of LOX-dependent mechanical cues in diabetes while simultaneously implicating LOX as an alternative (downstream) target to block AGE/RAGE signaling in DR. ARTICLE HIGHLIGHTS We investigated the regulation and proinflammatory role of retinal endothelial lysyl oxidase (LOX) in diabetes. Findings reveal that LOX is upregulated by advanced glycation end products (AGE) and receptor for AGE (RAGE) and mediates AGE/RAGE-induced retinal endothelial cell activation and subendothelial matrix remodeling. We also show that LOX-dependent subendothelial matrix stiffening feeds back to enhance retinal endothelial RAGE. These findings implicate LOX as a key proinflammatory factor and an alternative (downstream) target to block AGE/RAGE signaling in diabetic retinopathy.
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Affiliation(s)
- Sathishkumar Chandrakumar
- Department of Bioengineering, University of California, Riverside, CA
- Department of Ophthalmology, University of California, Los Angeles, CA
- Doheny Eye Institute, Pasadena, CA
| | - Irene Santiago Tierno
- Department of Ophthalmology, University of California, Los Angeles, CA
- Doheny Eye Institute, Pasadena, CA
- Molecular, Cellular, and Integrated Physiology Interdepartmental PhD Program, University of California, Los Angeles, CA
| | - Mahesh Agarwal
- Department of Ophthalmology, University of California, Los Angeles, CA
- Doheny Eye Institute, Pasadena, CA
| | | | - Timothy S. Kern
- Department of Ophthalmology, University of California, Irvine, CA
- Gavin Herbert Eye Institute, University of California, Irvine, CA
| | - Kaustabh Ghosh
- Department of Bioengineering, University of California, Riverside, CA
- Department of Ophthalmology, University of California, Los Angeles, CA
- Doheny Eye Institute, Pasadena, CA
- Molecular, Cellular, and Integrated Physiology Interdepartmental PhD Program, University of California, Los Angeles, CA
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Petrushanko IY, Mitkevich VA, Makarov AA. Effect of β-amyloid on blood-brain barrier properties and function. Biophys Rev 2023; 15:183-197. [PMID: 37124923 PMCID: PMC10133432 DOI: 10.1007/s12551-023-01052-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2022] [Accepted: 03/13/2023] [Indexed: 05/02/2023] Open
Abstract
The deposition of beta-amyloid (Aβ) aggregates in the brain, accompanied by impaired cognitive function, is a characteristic feature of Alzheimer's disease (AD). An important role in this process is played by vascular disorders, in particular, a disturbance of the blood-brain barrier (BBB). The BBB controls the entry of Aβ from plasma to the brain via the receptor for advanced glycation end products (RAGE) and the removal of brain-derived Aβ via the low-density lipoprotein receptor-related protein (LRP1). The balance between the input of Aβ to the brain from the periphery and its output is disturbed during AD. Aβ changes the redox-status of BBB cells, which in turn changes the functioning of mitochondria and disrupts the barrier function of endothelial cells by affecting tight junction proteins. Aβ oligomers have the greatest toxic effect on BBB cells, and oligomers are most rapidly transferred by transcytosis from the brain side of the BBB to the blood side. Both the cytotoxic effect of Aβ and the impairment of barrier function are partly due to the interaction of Aβ monomers and oligomers with membrane-bound RAGE. AD therapies based on the disruption of this interaction or the creation of decoys for Aβ are being developed. The question of the transfer of various Aβ isoforms through the BBB is important, since it can influence the development of AD. It is shown that the rate of input of Aβ40 and Aβ42 from the blood into the brain is different. The actual question of the transfer of pathogenic Aβ isoforms with post-translational modifications or mutations through the BBB still remains open.
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Affiliation(s)
- Irina Yu. Petrushanko
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, 119991 Moscow, Russia
| | - Vladimir A. Mitkevich
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, 119991 Moscow, Russia
| | - Alexander A. Makarov
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, 119991 Moscow, Russia
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Liao YE, Liu J, Arnold K. Heparan sulfates and heparan sulfate binding proteins in sepsis. Front Mol Biosci 2023; 10:1146685. [PMID: 36865384 PMCID: PMC9971734 DOI: 10.3389/fmolb.2023.1146685] [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: 01/17/2023] [Accepted: 01/31/2023] [Indexed: 02/16/2023] Open
Abstract
Heparan sulfates (HSs) are the main components in the glycocalyx which covers endothelial cells and modulates vascular homeostasis through interactions with multiple Heparan sulfate binding proteins (HSBPs). During sepsis, heparanase increases and induces HS shedding. The process causes glycocalyx degradation, exacerbating inflammation and coagulation in sepsis. The circulating heparan sulfate fragments may serve as a host defense system by neutralizing dysregulated Heparan sulfate binding proteins or pro-inflammatory molecules in certain circumstances. Understanding heparan sulfates and heparan sulfate binding proteins in health and sepsis is critical to decipher the dysregulated host response in sepsis and advance drug development. In this review, we will overview the current understanding of HS in glycocalyx under septic condition and the dysfunctional heparan sulfate binding proteins as potential drug targets, particularly, high mobility group box 1 (HMGB1) and histones. Moreover, several drug candidates based on heparan sulfates or related to heparan sulfates, such as heparanase inhibitors or heparin-binding protein (HBP), will be discussed regarding their recent advances. By applying chemical or chemoenzymatic approaches, the structure-function relationship between heparan sulfates and heparan sulfate binding proteins is recently revealed with structurally defined heparan sulfates. Such homogenous heparan sulfates may further facilitate the investigation of the role of heparan sulfates in sepsis and the development of carbohydrate-based therapy.
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Affiliation(s)
- Yi-En Liao
- Division of Chemical Biology and Medicinal Chemistry, Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, NC, United States
| | - Jian Liu
- Division of Chemical Biology and Medicinal Chemistry, Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, NC, United States
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10
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RAGE Inhibitors for Targeted Therapy of Cancer: A Comprehensive Review. Int J Mol Sci 2022; 24:ijms24010266. [PMID: 36613714 PMCID: PMC9820344 DOI: 10.3390/ijms24010266] [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: 09/17/2022] [Revised: 10/28/2022] [Accepted: 12/16/2022] [Indexed: 12/28/2022] Open
Abstract
The receptor for advanced glycation end products (RAGE) is a member of the immunoglobulin family that is overexpressed in several cancers. RAGE is highly expressed in the lung, and its expression increases proportionally at the site of inflammation. This receptor can bind a variety of ligands, including advanced glycation end products, high mobility group box 1, S100 proteins, adhesion molecules, complement components, advanced lipoxidation end products, lipopolysaccharides, and other molecules that mediate cellular responses related to acute and chronic inflammation. RAGE serves as an important node for the initiation and stimulation of cell stress and growth signaling mechanisms that promote carcinogenesis, tumor propagation, and metastatic potential. In this review, we discuss different aspects of RAGE and its prominent ligands implicated in cancer pathogenesis and describe current findings that provide insights into the significant role played by RAGE in cancer. Cancer development can be hindered by inhibiting the interaction of RAGE with its ligands, and this could provide an effective strategy for cancer treatment.
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11
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Singh H, Agrawal DK. Therapeutic potential of targeting the receptor for advanced glycation end products (RAGE) by small molecule inhibitors. Drug Dev Res 2022; 83:1257-1269. [PMID: 35781678 PMCID: PMC9474610 DOI: 10.1002/ddr.21971] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Revised: 06/06/2022] [Accepted: 06/12/2022] [Indexed: 01/05/2023]
Abstract
Receptor for advanced glycation end products (RAGE) is a 45 kDa transmembrane receptor of immunoglobulin family that can bind to various endogenous and exogenous ligands and initiate the inflammatory downstream signaling pathways. RAGE is involved in various disorders including cardiovascular and neurodegenerative diseases, cancer, and diabetes. This review summarizes the structural features of RAGE and its various isoforms along with their pathological effects. Mainly, the article emphasized on the translational significance of antagonizing the interactions of RAGE with its ligands using small molecules reported in the last 5 years and discusses future approaches that could be employed to block the interactions in the treatment of chronic inflammatory ailments. The RAGE inhibitors described in this article could prove as a powerful approach in the management of immune‐inflammatory diseases. A critical review of the literature suggests that there is a dire need to dive deeper into the molecular mechanism of action to resolve critical issues that must be addressed to understand RAGE‐targeting therapy and long‐term blockade of RAGE in human diseases.
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Affiliation(s)
- Harbinder Singh
- Department of Translational Research, College of Osteopathic Medicine of the Pacific Western University of Health Sciences, Pomona, California, USA
| | - Devendra K Agrawal
- Department of Translational Research, College of Osteopathic Medicine of the Pacific Western University of Health Sciences, Pomona, California, USA
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12
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Li M, Ong CY, Langouët-Astrié CJ, Tan L, Verma A, Yang Y, Zhang X, Shah DK, Schmidt EP, Xu D. Heparan sulfate-dependent RAGE oligomerization is indispensable for pathophysiological functions of RAGE. eLife 2022; 11:e71403. [PMID: 35137686 PMCID: PMC8863369 DOI: 10.7554/elife.71403] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Accepted: 02/01/2022] [Indexed: 12/13/2022] Open
Abstract
RAGE, a druggable inflammatory receptor, is known to function as an oligomer but the exact oligomerization mechanism remains poorly understood. Previously we have shown that heparan sulfate (HS) plays an active role in RAGE oligomerization. To understand the physiological significance of HS-induced RAGE oligomerization in vivo, we generated RAGE knock-in mice (AgerAHA/AHA) by introducing point mutations to specifically disrupt HS-RAGE interaction. The RAGE mutant demonstrated normal ligand-binding but impaired capacity of HS-binding and oligomerization. Remarkably, AgerAHA/AHA mice phenocopied Ager-/- mice in two different pathophysiological processes, namely bone remodeling and neutrophil-mediated liver injury, which demonstrates that HS-induced RAGE oligomerization is essential for RAGE signaling. Our findings suggest that it should be possible to block RAGE signaling by inhibiting HS-RAGE interaction. To test this, we generated a monoclonal antibody that targets the HS-binding site of RAGE. This antibody blocks RAGE signaling in vitro and in vivo, recapitulating the phenotype of AgerAHA/AHA mice. By inhibiting HS-RAGE interaction genetically and pharmacologically, our work validated an alternative strategy to antagonize RAGE. Finally, we have performed RNA-seq analysis of neutrophils and lungs and found that while Ager-/- mice had a broad alteration of transcriptome in both tissues compared to wild-type mice, the changes of transcriptome in AgerAHA/AHA mice were much more restricted. This unexpected finding suggests that by preserving the expression of RAGE protein (in a dominant-negative form), AgerAHA/AHA mouse might represent a cleaner genetic model to study physiological roles of RAGE in vivo compared to Ager-/- mice.
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Affiliation(s)
- Miaomiao Li
- Department of Oral Biology, University at Buffalo, State University of New YorkBuffaloUnited States
| | - Chih Yean Ong
- Department of Oral Biology, University at Buffalo, State University of New YorkBuffaloUnited States
| | - Christophe J Langouët-Astrié
- Division of Pulmonary Sciences and Critical Care Medicine, Department of Medicine, University of Colorado Anschutz Medical CampusAuroraUnited States
| | - Lisi Tan
- Department of Oral Biology, University at Buffalo, State University of New YorkBuffaloUnited States
- Department of Periodontics, School of Stomatology, China Medical UniversityShenyangChina
| | - Ashwni Verma
- Department of Pharmaceutical Sciences, School of Pharmacy and Pharmaceutical Sciences, University at Buffalo, State University of New YorkBuffaloUnited States
| | - Yimu Yang
- Division of Pulmonary Sciences and Critical Care Medicine, Department of Medicine, University of Colorado Anschutz Medical CampusAuroraUnited States
| | - Xiaoxiao Zhang
- Department of Oral Biology, University at Buffalo, State University of New YorkBuffaloUnited States
| | - Dhaval K Shah
- Department of Pharmaceutical Sciences, School of Pharmacy and Pharmaceutical Sciences, University at Buffalo, State University of New YorkBuffaloUnited States
| | - Eric P Schmidt
- Division of Pulmonary Sciences and Critical Care Medicine, Department of Medicine, University of Colorado Anschutz Medical CampusAuroraUnited States
| | - Ding Xu
- Department of Oral Biology, University at Buffalo, State University of New YorkBuffaloUnited States
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13
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Klont F, Horvatovich P, Bowler RP, van Rikxoort E, Charbonnier JP, Kwiatkowski M, Lynch DA, Humphries S, Bischoff R, Ten Hacken NHT, Pouwels SD. Plasma sRAGE levels strongly associate with centrilobular emphysema assessed by HRCT scans. Respir Res 2022; 23:15. [PMID: 35073932 PMCID: PMC8785488 DOI: 10.1186/s12931-022-01934-w] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Accepted: 01/18/2022] [Indexed: 01/01/2023] Open
Abstract
Background There is a strong need for biomarkers to better characterize individuals with COPD and to take into account the heterogeneity of COPD. The blood protein sRAGE has been put forward as promising biomarker for COPD in general and emphysema in particular. Here, we measured plasma sRAGE levels using quantitative LC–MS and assessed whether the plasma sRAGE levels associate with (changes in) lung function, radiological emphysema parameters, and radiological subtypes of emphysema. Methods Three hundred and twenty-four COPD patients (mean FEV1: 63%predicted) and 185 healthy controls from the COPDGene study were selected. Plasma sRAGE was measured by immunoprecipitation in 96-well plate methodology to enrich sRAGE, followed by targeted quantitative liquid chromatography-mass spectrometry. Spirometry and HRCT scans (inspiration and expiration) with a 5-year follow-up were used; both subjected to high quality control standards. Results Lower sRAGE values significantly associated with the presence of COPD, the severity of airflow obstruction, the severity of emphysema on HRCT, the heterogeneous distribution of emphysema, centrilobular emphysema, and 5-year progression of emphysema. However, sRAGE values did not associate with airway wall thickness or paraseptal emphysema. Conclusions Rather than being a general COPD biomarker, sRAGE is especially a promising biomarker for centrilobular emphysema. Follow-up studies should elucidate whether sRAGE can be used as a biomarker for other COPD phenotypes as well.
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Affiliation(s)
- Frank Klont
- Department of Analytical Biochemistry, Groningen Research Institute of Pharmacy, University of Groningen, Antonius Deusinglaan 1, 9713 AV, Groningen, The Netherlands.,Groningen Research Institute for Asthma and COPD (GRIAC), University Medical Center Groningen, Groningen, The Netherlands
| | - Peter Horvatovich
- Department of Analytical Biochemistry, Groningen Research Institute of Pharmacy, University of Groningen, Antonius Deusinglaan 1, 9713 AV, Groningen, The Netherlands.,Groningen Research Institute for Asthma and COPD (GRIAC), University Medical Center Groningen, Groningen, The Netherlands
| | | | - Eva van Rikxoort
- Thirona, Nijmegen, The Netherlands.,Diagnostic Image Analysis Group, Department of Radiology, Radboud University Nijmegen Medical Center, Nijmegen, The Netherlands
| | | | - Marcel Kwiatkowski
- Department of Analytical Biochemistry, Groningen Research Institute of Pharmacy, University of Groningen, Antonius Deusinglaan 1, 9713 AV, Groningen, The Netherlands.,Groningen Research Institute for Asthma and COPD (GRIAC), University Medical Center Groningen, Groningen, The Netherlands
| | - David A Lynch
- Department of Radiology, National Jewish Health, 1400 Jackson St, Denver, CO, 80206, USA
| | - Stephen Humphries
- Department of Radiology, National Jewish Health, 1400 Jackson St, Denver, CO, 80206, USA
| | - Rainer Bischoff
- Department of Analytical Biochemistry, Groningen Research Institute of Pharmacy, University of Groningen, Antonius Deusinglaan 1, 9713 AV, Groningen, The Netherlands.,Groningen Research Institute for Asthma and COPD (GRIAC), University Medical Center Groningen, Groningen, The Netherlands
| | - Nick H T Ten Hacken
- Groningen Research Institute for Asthma and COPD (GRIAC), University Medical Center Groningen, Groningen, The Netherlands.,Department of Pulmonary Diseases, University Medical Center Groningen, Hanzeplein 1, 9713 GZ, Groningen, The Netherlands
| | - Simon D Pouwels
- Department of Analytical Biochemistry, Groningen Research Institute of Pharmacy, University of Groningen, Antonius Deusinglaan 1, 9713 AV, Groningen, The Netherlands. .,Groningen Research Institute for Asthma and COPD (GRIAC), University Medical Center Groningen, Groningen, The Netherlands. .,Department of Pulmonary Diseases, University Medical Center Groningen, Hanzeplein 1, 9713 GZ, Groningen, The Netherlands. .,Department of Pathology and Medical Biology, University Medical Center Groningen, Groningen, The Netherlands.
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14
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An Integrative Genomic Strategy Identifies Soluble Receptor for Advanced Glycation End-Products as a Causal and Protective Biomarker of Lung Function. Chest 2022; 161:3-5. [DOI: 10.1016/j.chest.2021.08.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Revised: 08/03/2021] [Accepted: 08/04/2021] [Indexed: 11/18/2022] Open
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15
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Wouters K, Cento AS, Gaens KH, Teunissen M, Scheijen JLJM, Barutta F, Chiazza F, Collotta D, Aragno M, Gruden G, Collino M, Schalkwijk CG, Mastrocola R. Deletion of RAGE fails to prevent hepatosteatosis in obese mice due to impairment of other AGEs receptors and detoxifying systems. Sci Rep 2021; 11:17373. [PMID: 34462492 PMCID: PMC8405685 DOI: 10.1038/s41598-021-96859-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2021] [Accepted: 08/10/2021] [Indexed: 02/07/2023] Open
Abstract
Advanced glycation endproducts (AGEs) are involved in several diseases, including NAFLD and NASH. RAGE is the main receptor mediating the pro-inflammatory signalling induced by AGEs. Therefore, targeting of RAGE has been proposed for prevention of chronic inflammatory diseases. However, the role of RAGE in the development of NAFLD and NASH remains poorly understood. We thus aimed to analyse the effect of obesity on AGEs accumulation, AGE-receptors and AGE-detoxification, and whether the absence of RAGE might improve hepatosteatosis and inflammation, by comparing the liver of lean control, obese (LeptrDb-/-) and obese RAGE-deficient (RAGE-/- LeptrDb-/-) mice. Obesity induced AGEs accumulation and RAGE expression with hepatosteatosis and inflammation in LeptrDb-/-, compared to lean controls. Despite the genetic deletion of RAGE in the LeptrDb-/- mice, high levels of intrahepatic AGEs were maintained accompanied by decreased expression of the protective AGE-receptor-1, impaired AGE-detoxifying system glyoxalase-1, and increased expression of the alternative AGE-receptor galectin-3. We also found sustained hepatosteatosis and inflammation as determined by persistent activation of the lipogenic SREBP1c and proinflammatory NLRP3 signalling pathways. Thus, RAGE targeting is not effective in the prevention of NAFLD in conditions of obesity, likely due to the direct liver specific crosstalk of RAGE with other AGE-receptors and AGE-detoxifying systems.
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Affiliation(s)
- Kristiaan Wouters
- grid.412966.e0000 0004 0480 1382Department of Internal Medicine, MUMC, Maastricht, Limburg The Netherlands ,grid.5012.60000 0001 0481 6099Cardiovascular Research Institute Maastricht, Maastricht, Limburg The Netherlands
| | - Alessia S. Cento
- grid.7605.40000 0001 2336 6580Department of Clinical and Biological Sciences, University of Turin, Corso Raffaello 30, 10125 Turin, Italy
| | - Katrien H. Gaens
- grid.412966.e0000 0004 0480 1382Department of Internal Medicine, MUMC, Maastricht, Limburg The Netherlands ,grid.5012.60000 0001 0481 6099Cardiovascular Research Institute Maastricht, Maastricht, Limburg The Netherlands
| | - Margee Teunissen
- grid.412966.e0000 0004 0480 1382Department of Internal Medicine, MUMC, Maastricht, Limburg The Netherlands
| | - Jean L. J. M. Scheijen
- grid.412966.e0000 0004 0480 1382Department of Internal Medicine, MUMC, Maastricht, Limburg The Netherlands ,grid.5012.60000 0001 0481 6099Cardiovascular Research Institute Maastricht, Maastricht, Limburg The Netherlands
| | - Federica Barutta
- grid.7605.40000 0001 2336 6580Department of Medical Sciences, University of Turin, Turin, Italy
| | - Fausto Chiazza
- grid.16563.370000000121663741Department of Drug Sciences, University of Eastern Piedmont, Novara, Italy
| | - Debora Collotta
- grid.7605.40000 0001 2336 6580Department of Drug Science and Technology, University of Turin, Turin, Italy
| | - Manuela Aragno
- grid.7605.40000 0001 2336 6580Department of Clinical and Biological Sciences, University of Turin, Corso Raffaello 30, 10125 Turin, Italy
| | - Gabriella Gruden
- grid.7605.40000 0001 2336 6580Department of Medical Sciences, University of Turin, Turin, Italy
| | - Massimo Collino
- grid.7605.40000 0001 2336 6580Department of Drug Science and Technology, University of Turin, Turin, Italy
| | - Casper G. Schalkwijk
- grid.412966.e0000 0004 0480 1382Department of Internal Medicine, MUMC, Maastricht, Limburg The Netherlands ,grid.5012.60000 0001 0481 6099Cardiovascular Research Institute Maastricht, Maastricht, Limburg The Netherlands
| | - Raffaella Mastrocola
- grid.412966.e0000 0004 0480 1382Department of Internal Medicine, MUMC, Maastricht, Limburg The Netherlands ,grid.7605.40000 0001 2336 6580Department of Clinical and Biological Sciences, University of Turin, Corso Raffaello 30, 10125 Turin, Italy
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16
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Chiappalupi S, Salvadori L, Vukasinovic A, Donato R, Sorci G, Riuzzi F. Targeting RAGE to prevent SARS-CoV-2-mediated multiple organ failure: Hypotheses and perspectives. Life Sci 2021; 272:119251. [PMID: 33636175 PMCID: PMC7900755 DOI: 10.1016/j.lfs.2021.119251] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Revised: 02/12/2021] [Accepted: 02/18/2021] [Indexed: 02/06/2023]
Abstract
A novel infectious disease (COVID-19), caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), was detected in December 2019 and declared as a global pandemic by the World Health. Approximately 15% of patients with COVID-19 progress to severe pneumonia and eventually develop acute respiratory distress syndrome (ARDS), septic shock and/or multiple organ failure with high morbidity and mortality. Evidence points towards a determinant pathogenic role of members of the renin-angiotensin system (RAS) in mediating the susceptibility, infection, inflammatory response and parenchymal injury in lungs and other organs of COVID-19 patients. The receptor for advanced glycation end-products (RAGE), a member of the immunoglobulin superfamily, has important roles in pulmonary pathological states, including fibrosis, pneumonia and ARDS. RAGE overexpression/hyperactivation is essential to the deleterious effects of RAS in several pathological processes, including hypertension, chronic kidney and cardiovascular diseases, and diabetes, all of which are major comorbidities of SARS-CoV-2 infection. We propose RAGE as an additional molecular target in COVID-19 patients for ameliorating the multi-organ pathology induced by the virus and improving survival, also in the perspective of future infections by other coronaviruses.
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Affiliation(s)
- Sara Chiappalupi
- Department of Medicine and Surgery, University of Perugia, Perugia 06132, Italy; Interuniversity Institute of Myology (IIM), Perugia 06132, Italy
| | - Laura Salvadori
- Interuniversity Institute of Myology (IIM), Perugia 06132, Italy; Department of Translational Medicine, University of Piemonte Orientale, Novara 28100, Italy
| | - Aleksandra Vukasinovic
- Department of Medicine and Surgery, University of Perugia, Perugia 06132, Italy; Interuniversity Institute of Myology (IIM), Perugia 06132, Italy
| | - Rosario Donato
- Interuniversity Institute of Myology (IIM), Perugia 06132, Italy
| | - Guglielmo Sorci
- Department of Medicine and Surgery, University of Perugia, Perugia 06132, Italy; Interuniversity Institute of Myology (IIM), Perugia 06132, Italy; Centro Universitario di Ricerca sulla Genomica Funzionale, University of Perugia, Perugia 06132, Italy
| | - Francesca Riuzzi
- Department of Medicine and Surgery, University of Perugia, Perugia 06132, Italy; Interuniversity Institute of Myology (IIM), Perugia 06132, Italy.
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17
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Moysa A, Steczkiewicz K, Niedzialek D, Hammerschmid D, Zhukova L, Sobott F, Dadlez M. A model of full-length RAGE in complex with S100B. Structure 2021; 29:989-1002.e6. [PMID: 33887170 DOI: 10.1016/j.str.2021.04.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2020] [Revised: 02/03/2021] [Accepted: 04/02/2021] [Indexed: 01/10/2023]
Abstract
The receptor for advanced glycation end products (RAGE) is an immunoglobulin-type multiligand transmembrane protein expressed in numerous cell types, including the central nervous system cells. RAGE interaction with S100B, released during brain tissue damage, leads to RAGE upregulation and initialization of a spiral proinflammatory associated with different neural disorders. Here, we present the structural characterization of the hetero-oligomeric complex of the full-length RAGE with S100B, obtained by a combination of mass spectrometry-based methods and molecular modeling. We predict that RAGE functions as a tightly packed tetramer exposing a positively charged surface formed by V domains for S100B binding. Based on HDX results we demonstrate an allosteric coupling of the distal extracellular V domains and the transmembrane region, indicating a possible mechanism of signal transmission by RAGE across the membrane. Our model provides an insight into RAGE-ligand interactions, providing a basis for the rational design of the therapeutic modifiers of its activity.
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Affiliation(s)
- Alexander Moysa
- Institute of Biochemistry and Biophysics, PAS, Pawinskiego 5a, 02-109 Warsaw, Poland.
| | - Kamil Steczkiewicz
- Institute of Biochemistry and Biophysics, PAS, Pawinskiego 5a, 02-109 Warsaw, Poland.
| | - Dorota Niedzialek
- Institute of Biochemistry and Biophysics, PAS, Pawinskiego 5a, 02-109 Warsaw, Poland
| | - Dietmar Hammerschmid
- Department of Chemistry, King's College London, 7 Trinity Street, SE1 1DB London, UK; Department of Chemistry, Biomolecular & Analytical Mass Spectrometry Group, University of Antwerp, Groenenborgerlaan 171, 2020 Antwerp, Belgium
| | - Lilia Zhukova
- Institute of Biochemistry and Biophysics, PAS, Pawinskiego 5a, 02-109 Warsaw, Poland
| | - Frank Sobott
- Astbury Centre for Structural Molecular Biology and School of Molecular and Cellular Biology, University of Leeds, Woodhouse Lane, LS2 9JT Leeds, UK; Department of Chemistry, Biomolecular & Analytical Mass Spectrometry Group, University of Antwerp, Groenenborgerlaan 171, 2020 Antwerp, Belgium
| | - Michal Dadlez
- Institute of Biochemistry and Biophysics, PAS, Pawinskiego 5a, 02-109 Warsaw, Poland
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18
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Nair M, Jagadeeshan S, Katselis G, Luan X, Momeni Z, Henao-Romero N, Chumala P, Tam JS, Yamamoto Y, Ianowski JP, Campanucci VA. Lipopolysaccharides induce a RAGE-mediated sensitization of sensory neurons and fluid hypersecretion in the upper airways. Sci Rep 2021; 11:8336. [PMID: 33863932 PMCID: PMC8052339 DOI: 10.1038/s41598-021-86069-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Accepted: 03/02/2021] [Indexed: 02/07/2023] Open
Abstract
Thoracic dorsal root ganglia (tDRG) contribute to fluid secretion in the upper airways. Inflammation potentiates DRG responses, but the mechanisms remain under investigation. The receptor for advanced glycation end-products (RAGE) underlies potentiation of DRG responses in pain pathologies; however, its role in other sensory modalities is less understood. We hypothesize that RAGE contributes to electrophysiological and biochemical changes in tDRGs during inflammation. We used tDRGs and tracheas from wild types (WT), RAGE knock-out (RAGE-KO), and with the RAGE antagonist FPS-ZM1, and exposed them to lipopolysaccharides (LPS). We studied: capsaicin (CAP)-evoked currents and action potentials (AP), tracheal submucosal gland secretion, RAGE expression and downstream pathways. In WT neurons, LPS increased CAP-evoked currents and AP generation, and it caused submucosal gland hypersecretion in tracheas from WT mice exposed to LPS. In contrast, LPS had no effect on tDRG excitability or gland secretion in RAGE-KO mice or mice treated with FPS-ZM1. LPS upregulated full-length RAGE (encoded by Tv1-RAGE) and downregulated a soluble (sRAGE) splice variant (encoded by MmusRAGEv4) in tDRG neurons. These data suggest that sensitization of tDRG neurons contributes to hypersecretion in the upper airways during inflammation. And at least two RAGE variants may be involved in these effects of LPS.
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Affiliation(s)
- Manoj Nair
- Department of Anatomy, Physiology and Pharmacology (APP), College of Medicine, University of Saskatchewan, 107 Wiggins Road, Saskatoon, SK, S7N 5E5, Canada
| | - Santosh Jagadeeshan
- Department of Anatomy, Physiology and Pharmacology (APP), College of Medicine, University of Saskatchewan, 107 Wiggins Road, Saskatoon, SK, S7N 5E5, Canada
| | - George Katselis
- Department of Medicine, College of Medicine, University of Saskatchewan, 107 Wiggins Road, Saskatoon, SK, S7N 5E5, Canada
| | - Xiaojie Luan
- Department of Medicine, College of Medicine, University of Saskatchewan, 107 Wiggins Road, Saskatoon, SK, S7N 5E5, Canada
| | - Zeinab Momeni
- Department of Anatomy, Physiology and Pharmacology (APP), College of Medicine, University of Saskatchewan, 107 Wiggins Road, Saskatoon, SK, S7N 5E5, Canada
| | - Nicolas Henao-Romero
- Department of Anatomy, Physiology and Pharmacology (APP), College of Medicine, University of Saskatchewan, 107 Wiggins Road, Saskatoon, SK, S7N 5E5, Canada
| | - Paulos Chumala
- Department of Medicine, College of Medicine, University of Saskatchewan, 107 Wiggins Road, Saskatoon, SK, S7N 5E5, Canada
| | - Julian S Tam
- Department of Medicine, Division of Respirology, College of Medicine, University of Saskatchewan, 107 Wiggins Road, Saskatoon, SK, S7N 5E5, Canada
| | - Yasuhiko Yamamoto
- Department of Biochemistry and Molecular Vascular Biology, Kanazawa University Graduate School of Medical Science, Kanazawa, 920-8640, Japan
| | - Juan P Ianowski
- Department of Anatomy, Physiology and Pharmacology (APP), College of Medicine, University of Saskatchewan, 107 Wiggins Road, Saskatoon, SK, S7N 5E5, Canada
| | - Verónica A Campanucci
- Department of Anatomy, Physiology and Pharmacology (APP), College of Medicine, University of Saskatchewan, 107 Wiggins Road, Saskatoon, SK, S7N 5E5, Canada.
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19
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Shen L, Zhang T, Yang Y, Lu D, Xu A, Li K. FPS-ZM1 Alleviates Neuroinflammation in Focal Cerebral Ischemia Rats via Blocking Ligand/RAGE/DIAPH1 Pathway. ACS Chem Neurosci 2021; 12:63-78. [PMID: 33300334 DOI: 10.1021/acschemneuro.0c00530] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
Receptor for advanced glycation end products (RAGEs), a multiligand receptor belonging to the cell-surface immunoglobulin superfamily, has been reported to play a crucial role in neuroinflammation and neurodegenerative diseases. Here, we tested our hypothesis that the RAGE-specific antagonist FPS-ZM1 is neuroprotective against ischemic brain injury. Distal middle cerebral artery occlusion (MCAO) or sham operation was performed on anesthetized Sprague-Dawley male rats (n = 60), which were then treated with FPS-ZM1 or vehicle (four groups in total = Vehicle + MCAO, FPS-ZM1 + MCAO, Vehicle + sham, and FPS-ZM1 + sham). After 1 week, neurological function was evaluated, and then, brain tissues were collected for 2,3,5-triphenyltetrazolium chloride staining, Nissl staining, TUNEL staining, Western blotting, and immunohistochemical analyses. FPS-ZM1 treatment after MCAO markedly attenuated neurological deficits and reduced the infarct area. More interestingly, FPS-ZM1 inhibited ischemia-induced astrocytic activation and microgliosis and decreased the elevated levels of proinflammatory cytokines. Furthermore, FPS-ZM1 blocked the increase in the level of RAGE and, notably, of DIAPH1, the key cytoplasmic hub for RAGE-ligand-mediated activation of cellular signaling. Accordingly, FPS-ZM1 also reversed the MCAO-induced increase in phosphorylation of NF-κB targets that are potentially downstream from RAGE/DIAPH1. Our findings reveal that FPS-ZM1 treatment reduces neuroinflammation in rats with focal cerebral ischemia and further suggest that the ligand/RAGE/DIAPH1 pathway contributes to this FPS-ZM1-mediated alleviation of neuroinflammation.
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Affiliation(s)
- Lingling Shen
- Department of Neurology and Stroke Centre, the Fist Affiliated Hospital of Jinan University, Guangzhou 510632, China
- Clinical Neuroscience Institute of Jinan University, Guangzhou 510632, China
| | - Tianyuan Zhang
- Department of Neurology and Stroke Centre, the Fist Affiliated Hospital of Jinan University, Guangzhou 510632, China
- Clinical Neuroscience Institute of Jinan University, Guangzhou 510632, China
| | - Yu Yang
- Department of Neurology and Stroke Centre, the Fist Affiliated Hospital of Jinan University, Guangzhou 510632, China
- Clinical Neuroscience Institute of Jinan University, Guangzhou 510632, China
| | - Dan Lu
- Department of Neurology and Stroke Centre, the Fist Affiliated Hospital of Jinan University, Guangzhou 510632, China
- Clinical Neuroscience Institute of Jinan University, Guangzhou 510632, China
| | - Anding Xu
- Department of Neurology and Stroke Centre, the Fist Affiliated Hospital of Jinan University, Guangzhou 510632, China
- Clinical Neuroscience Institute of Jinan University, Guangzhou 510632, China
| | - Keshen Li
- Clinical Neuroscience Institute of Jinan University, Guangzhou 510632, China
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20
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May O, Yatime L, Merle NS, Delguste F, Howsam M, Daugan MV, Paul-Constant C, Billamboz M, Ghinet A, Lancel S, Dimitrov JD, Boulanger E, Roumenina LT, Frimat M. The receptor for advanced glycation end products is a sensor for cell-free heme. FEBS J 2020; 288:3448-3464. [PMID: 33314778 DOI: 10.1111/febs.15667] [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: 06/08/2020] [Revised: 11/06/2020] [Accepted: 12/09/2020] [Indexed: 01/01/2023]
Abstract
Heme's interaction with Toll-like receptor 4 (TLR4) does not fully explain the proinflammatory properties of this hemoglobin-derived molecule during intravascular hemolysis. The receptor for advanced glycation end products (RAGE) shares many features with TLR4 such as common ligands and proinflammatory, prothrombotic, and pro-oxidative signaling pathways, prompting us to study its involvement as a heme sensor. Stable RAGE-heme complexes with micromolar affinity were detected as heme-mediated RAGE oligomerization. The heme-binding site was located in the V domain of RAGE. This interaction was Fe3+ -dependent and competitive with carboxymethyllysine, another RAGE ligand. We confirmed a strong basal gene expression of RAGE in mouse lungs. After intraperitoneal heme injection, pulmonary TNF-α, IL1β, and tissue factor gene expression levels increased in WT mice but were significantly lower in their RAGE-/- littermates. This may be related to the lower activation of ERK1/2 and Akt observed in the lungs of heme-treated, RAGE-/- mice. Overall, heme binds to RAGE with micromolar affinity and could promote proinflammatory and prothrombotic signaling in vivo, suggesting that this interaction could be implicated in heme-overload conditions.
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Affiliation(s)
- Olivia May
- Inserm, Institut Pasteur de Lille, U1167 - RID-AGE, Univ. Lille, France.,CHU Lille, Nephrology Department, Univ. Lille, France.,UMR_S 1138, Centre de Recherche des Cordeliers, INSERM, Paris, France
| | - Laure Yatime
- LPHI, UMR 5235, CNRS, INSERM, University of Montpellier, France
| | - Nicolas S Merle
- UMR_S 1138, Centre de Recherche des Cordeliers, INSERM, Paris, France
| | - Florian Delguste
- Inserm, Institut Pasteur de Lille, U1167 - RID-AGE, Univ. Lille, France
| | - Mike Howsam
- Inserm, Institut Pasteur de Lille, U1167 - RID-AGE, Univ. Lille, France
| | - Marie V Daugan
- UMR_S 1138, Centre de Recherche des Cordeliers, INSERM, Paris, France
| | | | - Muriel Billamboz
- Inserm, Institut Pasteur de Lille, U1167 - RID-AGE, Univ. Lille, France.,Yncréa Hauts-de-France, Ecole des Hautes Etudes d'Ingénieur, Health & Environment Department, Team Sustainable Chemistry, Laboratoire de Chimie Durable et Santé, UCLille, France
| | - Alina Ghinet
- Inserm, Institut Pasteur de Lille, U1167 - RID-AGE, Univ. Lille, France.,Yncréa Hauts-de-France, Ecole des Hautes Etudes d'Ingénieur, Health & Environment Department, Team Sustainable Chemistry, Laboratoire de Chimie Durable et Santé, UCLille, France.,Faculty of Chemistry, 'Alexandru Ioan Cuza' University of Iasi, Romania
| | - Steve Lancel
- Inserm, Institut Pasteur de Lille, U1167 - RID-AGE, Univ. Lille, France
| | - Jordan D Dimitrov
- UMR_S 1138, Centre de Recherche des Cordeliers, INSERM, Paris, France.,UPMC Univ Paris 06, Sorbonne Universités, Paris, France.,Sorbonne Paris Cité, Université Paris Descartes, France
| | - Eric Boulanger
- Inserm, Institut Pasteur de Lille, U1167 - RID-AGE, Univ. Lille, France
| | - Lubka T Roumenina
- UMR_S 1138, Centre de Recherche des Cordeliers, INSERM, Paris, France.,UPMC Univ Paris 06, Sorbonne Universités, Paris, France.,Sorbonne Paris Cité, Université Paris Descartes, France
| | - Marie Frimat
- Inserm, Institut Pasteur de Lille, U1167 - RID-AGE, Univ. Lille, France.,CHU Lille, Nephrology Department, Univ. Lille, France
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21
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RAGE Signaling in Melanoma Tumors. Int J Mol Sci 2020; 21:ijms21238989. [PMID: 33256110 PMCID: PMC7730603 DOI: 10.3390/ijms21238989] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Revised: 11/22/2020] [Accepted: 11/23/2020] [Indexed: 12/18/2022] Open
Abstract
Despite recent progresses in its treatment, malignant cutaneous melanoma remains a cancer with very poor prognosis. Emerging evidences suggest that the receptor for advance glycation end products (RAGE) plays a key role in melanoma progression through its activation in both cancer and stromal cells. In tumors, RAGE activation is fueled by numerous ligands, S100B and HMGB1 being the most notable, but the role of many other ligands is not well understood and should not be underappreciated. Here, we provide a review of the current role of RAGE in melanoma and conclude that targeting RAGE in melanoma could be an approach to improve the outcomes of melanoma patients.
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22
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RAGE signaling is required for AMPA receptor dysfunction in the hippocampus of hyperglycemic mice. Physiol Behav 2020; 229:113255. [PMID: 33221393 DOI: 10.1016/j.physbeh.2020.113255] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2019] [Revised: 10/31/2020] [Accepted: 11/18/2020] [Indexed: 01/08/2023]
Abstract
Diabetes in humans has been associated for a long time with cognitive dysfunction. In rodent animal models, cognitive dysfunction can manifest as impaired hippocampal synaptic plasticity. Particular attention has been concentrated on the receptor for advanced glycation end products (RAGE), which is implicated in multiple diabetic complications involving the development of vascular and peripheral nerve abnormalities. In this study, we hypothesize that RAGE signaling alters glutamate receptor function and expression, impairing synaptic transmission in the hippocampus. Using preparations of hippocampal slices from male mice, we show a RAGE-dependent decrease in long-term potentiation (LTP) and an increase in paired-pulse facilitation (PPF) following streptozotocin (STZ)-induced diabetes. Consistently, in hippocampal cultures from male and female neonatal mice, high glucose caused a RAGE-dependent reduction of AMPA- but not NMDA-evoked currents, and an increase in cytosolic reactive oxygen species (ROS). Consistently, when cultures were co-treated with high glucose and the RAGE antagonist FPS-ZM1, AMPA-evoked currents were unchanged. Hippocampi from STZ-induced hyperglycemic wild type (WT) mice showed increased RAGE expression concomitant with a decrease of both expression and phosphorylation (Ser 831 and 845) of the AMPA GluA1 subunit. We found these changes correlated to activation of the MAPK pathway, consistent with decreased pJNK/JNK ratio and the JNK kinase, pMEK7. As no changes in expression or phosphorylation of regulatory proteins were observed in hippocampi from STZ-induced hyperglycemic RAGE-KO mice, we report a RAGE-dependent impairment in the hippocampi of hyperglycemic WT mice, with reduced AMPA receptor expression/function and LTP deficits.
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23
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Intracellular amyloid-β disrupts tight junctions of the retinal pigment epithelium via NF-κB activation. Neurobiol Aging 2020; 95:115-122. [PMID: 32795848 DOI: 10.1016/j.neurobiolaging.2020.07.013] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2020] [Revised: 07/07/2020] [Accepted: 07/14/2020] [Indexed: 12/16/2022]
Abstract
Drusen are focal deposits between the retinal pigment epithelium (RPE) and Bruch's membrane in the retina of patients with age-related macular degeneration. Amyloid-β is one of the important components of drusen, which leads to local inflammation. Furthermore, intracellular amyloid-β disrupts tight junctions of the RPE. However, the intracellular mechanisms linking intracellular amyloid-β and tight-junction disruption are not clear. In this study, intracellular amyloid-β oligomers activated nuclear factor kappa-light-chain-enhancer of activated B cells (NF-κB) p65, leading to the disorganization of tight junctions of the RPE in mice after subretinal injection of amyloid-β. Amyloid-β also triggered NF-κB activation in the RPE cells in confluent culture, which was inhibited by the suppression of the advanced glycosylation end product-specific receptor. NF-κB inhibition by an IκB kinase inhibitor prevented the suppression of expression of tight-junction proteins, zonula occuludens-1 and occludin in RPE cells. In addition, tight-junction complexes remained intact in the RPE of mice with NF-κB inhibition, although there were intracellular amyloid-β oligomers. These data suggested that NF-κB inhibition might be a therapeutic approach to prevent amyloid-β-mediated tight-junction disruption.
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24
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Ziegler K, Kunert AT, Reinmuth-Selzle K, Leifke AL, Widera D, Weller MG, Schuppan D, Fröhlich-Nowoisky J, Lucas K, Pöschl U. Chemical modification of pro-inflammatory proteins by peroxynitrite increases activation of TLR4 and NF-κB: Implications for the health effects of air pollution and oxidative stress. Redox Biol 2020; 37:101581. [PMID: 32739154 PMCID: PMC7767743 DOI: 10.1016/j.redox.2020.101581] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2020] [Revised: 05/10/2020] [Accepted: 05/11/2020] [Indexed: 01/05/2023] Open
Abstract
Environmental pollutants like fine particulate matter can cause adverse health effects through oxidative stress and inflammation. Reactive oxygen and nitrogen species (ROS/RNS) such as peroxynitrite can chemically modify proteins, but the effects of such modifications on the immune system and human health are not well understood. In the course of inflammatory processes, the Toll-like receptor 4 (TLR4) can sense damage-associated molecular patterns (DAMPs). Here, we investigate how the TLR4 response and pro-inflammatory potential of the proteinous DAMPs α-Synuclein (α-Syn), heat shock protein 60 (HSP60), and high-mobility-group box 1 protein (HMGB1), which are relevant in neurodegenerative and cardiovascular diseases, changes upon chemical modification with peroxynitrite. For the peroxynitrite-modified proteins, we found a strongly enhanced activation of TLR4 and the pro-inflammatory transcription factor NF-κB in stable reporter cell lines as well as increased mRNA expression and secretion of the pro-inflammatory cytokines TNF-α, IL-1β, and IL-8 in human monocytes (THP-1). This enhanced activation of innate immunity via TLR4 is mediated by covalent chemical modifications of the studied DAMPs. Our results show that proteinous DAMPs modified by peroxynitrite more potently amplify inflammation via TLR4 activation than the native DAMPs, and provide first evidence that such modifications can directly enhance innate immune responses via a defined receptor. These findings suggest that environmental pollutants and related ROS/RNS may play a role in promoting acute and chronic inflammatory disorders by structurally modifying the body's own DAMPs. This may have important consequences for chronic neurodegenerative, cardiovascular or gastrointestinal diseases that are prevalent in modern societies, and calls for action, to improve air quality and climate in the Anthropocene. Pollutants and oxidative stress can cause protein nitration and oligomerization. Peroxynitrite amplifies inflammatory potential of disease-related proteins in vitro. Chemical modification of damage-associated molecular patterns (DAMPs). Positive feedback of modified DAMPs via pattern recognition receptor (TLR4). Air pollution may promote inflammatory disorders in the Anthropocene.
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Affiliation(s)
- Kira Ziegler
- Max Planck Institute for Chemistry, Multiphase Chemistry Department, 55128, Mainz, Germany
| | - Anna T Kunert
- Max Planck Institute for Chemistry, Multiphase Chemistry Department, 55128, Mainz, Germany
| | | | - Anna Lena Leifke
- Max Planck Institute for Chemistry, Multiphase Chemistry Department, 55128, Mainz, Germany
| | - Darius Widera
- Stem Cell Biology and Regenerative Medicine Group, School of Pharmacy, University of Reading, RG6 6AP, Reading, UK
| | - Michael G Weller
- Federal Institute for Materials Research and Testing (BAM), Berlin, Germany
| | - Detlef Schuppan
- Institute of Translational Immunology, University Medical Center of the Johannes Gutenberg University, 55131, Mainz, Germany; Division of Gastroenterology, Beth Israel Deaconess Medical Center, Harvard Medical School, MA, 02215, USA
| | | | - Kurt Lucas
- Max Planck Institute for Chemistry, Multiphase Chemistry Department, 55128, Mainz, Germany.
| | - Ulrich Pöschl
- Max Planck Institute for Chemistry, Multiphase Chemistry Department, 55128, Mainz, Germany.
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25
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Steenbeke M, De Bruyne S, De Buyzere M, Lapauw B, Speeckaert R, Petrovic M, Delanghe JR, Speeckaert MM. The role of soluble receptor for advanced glycation end-products (sRAGE) in the general population and patients with diabetes mellitus with a focus on renal function and overall outcome. Crit Rev Clin Lab Sci 2020; 58:113-130. [PMID: 32669010 DOI: 10.1080/10408363.2020.1791045] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Isoforms of the receptor for advanced glycation end-product (RAGE) protein, which lack the transmembrane and the signaling (soluble RAGE or sRAGE) domains are hypothesized to counteract the detrimental action of the full-length receptor by acting as a decoy, and they provide a potential tool to treat RAGE-associated diseases. Multiple studies have explored the relationship between sRAGE and endogenous secretory RAGE and its polymorphism and obesity, metabolic syndrome, atherosclerosis, kidney function, and increased mortality in the general population. In addition, sRAGE may be a key player in the pathogenesis of diabetes mellitus and its microvascular (e.g. kidney disease) as well as macrovascular (e.g. cardiovascular disease) complications. In this review, we focus on the role of sRAGE as a biomarker in these specific areas. As there is a lack of an underlying unifying hypothesis about how sRAGE changes according to the disease condition or risk factor, there is a call to incorporate all three players of the AGE-RAGE axis into a new universal biomarker/risk marker: (AGE + RAGE)/sRAGE. However, the measurement of RAGE in humans is not practical as it is a cell-bound receptor for which tissue is required for analysis. A high AGE/sRAGE ratio may be a valuable alternative and practical universal biomarker/risk marker for diseases associated with the AGE-RAGE axis, irrespective of low or high serum sRAGE concentrations.
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Affiliation(s)
- Mieke Steenbeke
- Department of Nephrology, Ghent University Hospital, Ghent, Belgium
| | - Sander De Bruyne
- Department of Clinical Chemistry, Ghent University Hospital, Ghent, Belgium
| | - Marc De Buyzere
- Department of Internal Medicine, Ghent University, Ghent, Belgium
| | - Bruno Lapauw
- Department of Endocrinology, Ghent University Hospital, Ghent, Belgium
| | | | - Mirko Petrovic
- Department of Geriatrics, 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, Brussels, Belgium
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26
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Tramarin A, Naldi M, Degani G, Lupu L, Wiegand P, Mazzolari A, Altomare A, Aldini G, Popolo L, Vistoli G, Przybylski M, Bartolini M. Unveiling the molecular mechanisms underpinning biorecognition of early-glycated human serum albumin and receptor for advanced glycation end products. Anal Bioanal Chem 2020; 412:4245-4259. [DOI: 10.1007/s00216-020-02674-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2020] [Revised: 04/08/2020] [Accepted: 04/20/2020] [Indexed: 12/17/2022]
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27
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Enhanced oligomerization of full-length RAGE by synergy of the interaction of its domains. Sci Rep 2019; 9:20332. [PMID: 31889156 PMCID: PMC6937306 DOI: 10.1038/s41598-019-56993-9] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2019] [Accepted: 12/11/2019] [Indexed: 01/10/2023] Open
Abstract
The pattern recognition receptor RAGE (receptor for advanced glycation end-products) transmits proinflammatory signals in several inflammation-related pathological states, including vascular diseases, cancer, neurodegeneration and diabetes. Its oligomerization is believed to be important in signal transduction, but RAGE oligomeric structures and stoichiometries remain unclear. Different oligomerization modes have been proposed in studies involving different truncated versions of the extracellular parts of RAGE. Here, we provide basic characterization of the oligomerization patterns of full-length RAGE (including the transmembrane (TM) and cytosolic regions) and compare the results with oligomerization modes of its four truncated fragments. For this purpose, we used native mass spectrometry, analytical ultracentrifugation, and size-exclusion chromatography coupled with multi-angle light scattering. Our results confirm known oligomerization tendencies of separate domains and highlight the enhanced oligomerization properties of full-length RAGE. Mutational analyses within the GxxxG motif of the TM region show sensitivity of oligomeric distributions to the TM sequence. Using hydrogen–deuterium exchange, we mapped regions involved in TM-dependent RAGE oligomerization. Our data provide experimental evidence for the major role of the C2 and TM domains in oligomerization, underscoring synergy among different oligomerization contact regions along the RAGE sequence. These results also explain the variability of obtained oligomerization modes in RAGE fragments.
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28
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Zamoon J, Madhu D, Ahmed I. Dynamic oligomerization of hRAGE's transmembrane and cytoplasmic domains within SDS micelles. Int J Biol Macromol 2019; 130:10-18. [PMID: 30794903 DOI: 10.1016/j.ijbiomac.2019.02.108] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2019] [Revised: 02/17/2019] [Accepted: 02/18/2019] [Indexed: 01/12/2023]
Abstract
The human Receptor for Advanced Glycation End Products (hRAGE) is a pattern recognition receptor implicated in inflammation and adhesion. It is involved in both innate and adaptive immunity. Its aberrant signaling is tied to the pathogenesis of diabetic complications, neurodegenerative disorders, and chronic inflammatory responses. Previous structural studies have focused on its extracellular domains with their canonical constant and variable Ig folds, and to a much lesser extent, the intrinsically disorder cytoplasmic domain. No experimental data are reported on the transmembrane domain, which is integral to signaling. We have constructed, expressed and purified the transmembrane domain attached to the cytoplasmic domain of hRAGE in E. coli. Multiple self-associated forms of these domains were observed in vitro. This pattern of mixed oligomers resembled previously reported in vivo forms of the complete receptor. The self-association of these two domains was further characterized using: SDS-PAGE, intrinsic tryptophan fluorescence and heteronuclear NMR spectroscopy. NMR conditions were assessed across time and temperature within micelles. Our data show that the transmembrane and cytoplasmic domains of hRAGE undergo dynamic oligomerizations that can occur in the absence of its extracellular domains or ligand binding. And, such associations are only partially disrupted even with prolonged incubation in strong detergents.
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Affiliation(s)
- Jamillah Zamoon
- Department of Biological Sciences (Biochemistry Program), Faculty of Science, Kuwait University, P.O. Box 5969, 13060, Kuwait.
| | - Dhanya Madhu
- Department of Biological Sciences (Biochemistry Program), Faculty of Science, Kuwait University, P.O. Box 5969, 13060, Kuwait
| | - Ikhlas Ahmed
- Department of Biological Sciences (Biochemistry Program), Faculty of Science, Kuwait University, P.O. Box 5969, 13060, Kuwait
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29
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AGE-RAGE stress: a changing landscape in pathology and treatment of Alzheimer's disease. Mol Cell Biochem 2019; 459:95-112. [PMID: 31079281 DOI: 10.1007/s11010-019-03553-4] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2019] [Accepted: 05/04/2019] [Indexed: 12/27/2022]
Abstract
Numerous hypotheses including amyloid cascade, cholinergic, and oxidative have been proposed for pathogenesis of Alzheimer's disease (AD). The data suggest that advanced glycation end products (AGEs) and its receptor RAGE (receptor for AGE) are involved in the pathogenesis of AD. AGE-RAGE stress, defined as a balance between stressors (AGE, RAGE) and anti-stressors (sRAGE, AGE degraders) in favor of stressors, has been implicated in pathogenesis of diseases. AGE and its interaction with RAGE-mediated increase in the reactive oxygen species (ROS) damage brain because of its increased vulnerability to ROS. AGE and ROS increase the synthesis of amyloid β (Aβ) leading to deposition of Aβ and phosphorylation of tau, culminating in formation of plaques and neurofibrillary tangles. ROS increase the synthesis of Aβ, high-mobility group box 1(HMGB1), and S100 that interacts with RAGE to produce additional ROS resulting in enhancement of AD pathology. Elevation of ROS precedes the Aβ plaques formation. Because of involvement of AGE and RAGE in AD pathology, the treatment should be targeted at lowering AGE levels through reduction in consumption and formation of AGE, and lowering expression of RAGE, blocking of RAGE ligand binding, increasing levels of soluble RAGE (sRAGE), and use of antioxidants. The above treatment aspect of AD is lacking. In conclusion, AGE-RAGE stress initiates, and Aβ, HMGB1, and S100 enhance the progression of AD. Reduction of levels of AGE and RAGE, elevation of sRAGE, and antioxidants would be beneficial therapeutic modalities in the prevention, regression, and slowing of progression of AD.
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30
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Prasad K. AGE-RAGE Stress in the Pathophysiology of Pulmonary Hypertension and its Treatment. Int J Angiol 2019; 28:71-79. [PMID: 31384104 DOI: 10.1055/s-0039-1687818] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Pulmonary hypertension (PH) is a rare and fatal disease characterized by elevation of pulmonary artery pressure ≥ 25 mm Hg. There are five groups of PH: (1) pulmonary artery (PA) hypertension (PAH), (2) PH due to heart diseases, (3) PH associated with lung diseases/hypoxia, (4) PH associated with chronic obstruction of PA, and (5) PH due to unclear and/or multifactorial mechanisms. The pathophysiologic mechanisms of group 1 have been studied in detail; however, those for groups 2 to 5 are not that well known. PH pathology is characterized by smooth muscle cells (SMC) proliferation, muscularization of peripheral PA, accumulation of extracellular matrix (ECM), plexiform lesions, thromboembolism, and recanalization of thrombi. Advanced glycation end products (AGE) and its receptor (RAGE) and soluble RAGE (sRAGE) appear to be involved in the pathogenesis of PH. AGE and its interaction with RAGE induce vascular hypertrophy through proliferation of vascular SMC, accumulation of ECM, and suppression of apoptosis. Reactive oxygen species (ROS) generated by interaction of AGE and RAGE modulates SMC proliferation, attenuate apoptosis, and constricts PA. Increased stiffness in the artery due to vascular hypertrophy, and vasoconstriction due to ROS resulted in PH. The data also suggest that reduction in consumption and formation of AGE, suppression of RAGE expression, blockage of RAGE ligand binding, elevation of sRAGE levels, and antioxidants may be novel therapeutic targets for prevention, regression, and slowing of progression of PH. In conclusion, AGE-RAGE stress may be involved in the pathogenesis of PH and the therapeutic targets should be the AGE-RAGE axis.
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Affiliation(s)
- Kailash Prasad
- Department of Physiology, College of Medicine, University of Saskatchewan, Saskatoon, Canada
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31
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Teissier T, Boulanger É. The receptor for advanced glycation end-products (RAGE) is an important pattern recognition receptor (PRR) for inflammaging. Biogerontology 2019; 20:279-301. [PMID: 30968282 DOI: 10.1007/s10522-019-09808-3] [Citation(s) in RCA: 77] [Impact Index Per Article: 15.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Accepted: 04/02/2019] [Indexed: 12/20/2022]
Abstract
The receptor for advanced glycation end-products (RAGE) was initially characterized and named for its ability to bind to advanced glycation end-products (AGEs) that form upon the irreversible and non-enzymatic interaction between nucleophiles, such as lysine, and carbonyl compounds, such as reducing sugars. The concentrations of AGEs are known to increase in conditions such as diabetes, as well as during ageing. However, it is now widely accepted that RAGE binds with numerous ligands, many of which can be defined as pathogen-associated molecular patterns (PAMPs) or damage-associated molecular patterns (DAMPs). The interaction between RAGE and its ligands mainly results in a pro-inflammatory response, and can lead to stress events often favouring mitochondrial dysfunction or cellular senescence. Thus, RAGE should be considered as a pattern recognition receptor (PRR), similar to those that regulate innate immunity. Innate immunity itself plays a central role in inflammaging, the chronic low-grade and sterile inflammation that increases with age and is a potentially important contributory factor in ageing. Consequently, and in addition to the age-related accumulation of PAMPs and DAMPs and increases in pro-inflammatory cytokines from senescent cells and damaged cells, PRRs are therefore important in inflammaging. We suggest here that, through its interconnection with immunity, senescence, mitochondrial dysfunction and inflammasome activation, RAGE is a key contributor to inflammaging and that the pro-longevity effects seen upon blocking RAGE, or upon its deletion, are thus the result of reduced inflammaging.
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Affiliation(s)
- Thibault Teissier
- Univ. Lille, Inserm, CHU Lille, U995 - LIRIC - Lille Inflammation Research International Center, 59000, Lille, France.
| | - Éric Boulanger
- Univ. Lille, Inserm, CHU Lille, U995 - LIRIC - Lille Inflammation Research International Center, 59000, Lille, France.,Department of Geriatrics and Ageing Biology, School of Medicine, Lille University, Lille, France.,Department of Geriatrics, Lille University Hospital, Lille, France
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32
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Riuzzi F, Sorci G, Sagheddu R, Chiappalupi S, Salvadori L, Donato R. RAGE in the pathophysiology of skeletal muscle. J Cachexia Sarcopenia Muscle 2018; 9:1213-1234. [PMID: 30334619 PMCID: PMC6351676 DOI: 10.1002/jcsm.12350] [Citation(s) in RCA: 63] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/28/2018] [Revised: 07/20/2018] [Accepted: 08/24/2018] [Indexed: 12/14/2022] Open
Abstract
Emerging evidence suggests that the signalling of the Receptor for Advanced Glycation End products (RAGE) is critical for skeletal muscle physiology controlling both the activity of muscle precursors during skeletal muscle development and the correct time of muscle regeneration after acute injury. On the other hand, the aberrant re-expression/activity of RAGE in adult skeletal muscle is a hallmark of muscle wasting that occurs in response to ageing, genetic disorders, inflammatory conditions, cancer, and metabolic alterations. In this review, we discuss the mechanisms of action and the ligands of RAGE involved in myoblast differentiation, muscle regeneration, and muscle pathological conditions. We highlight potential therapeutic strategies for targeting RAGE to improve skeletal muscle function.
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Affiliation(s)
- Francesca Riuzzi
- Department of Experimental Medicine, University of Perugia, Perugia, Italy.,Interuniversity Institute of Myology
| | - Guglielmo Sorci
- Department of Experimental Medicine, University of Perugia, Perugia, Italy.,Interuniversity Institute of Myology
| | - Roberta Sagheddu
- Department of Experimental Medicine, University of Perugia, Perugia, Italy.,Interuniversity Institute of Myology
| | - Sara Chiappalupi
- Department of Experimental Medicine, University of Perugia, Perugia, Italy.,Interuniversity Institute of Myology
| | - Laura Salvadori
- Department of Experimental Medicine, University of Perugia, Perugia, Italy.,Interuniversity Institute of Myology
| | - Rosario Donato
- Department of Experimental Medicine, University of Perugia, Perugia, Italy.,Interuniversity Institute of Myology.,Centro Universitario di Ricerca sulla Genomica Funzionale, University of Perugia, Perugia, Italy
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33
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Zhu Q, Smith EA. Diaphanous-1 affects the nanoscale clustering and lateral diffusion of receptor for advanced glycation endproducts (RAGE). BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2018; 1861:43-49. [PMID: 30401627 DOI: 10.1016/j.bbamem.2018.10.015] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/13/2018] [Revised: 10/24/2018] [Accepted: 10/24/2018] [Indexed: 12/22/2022]
Abstract
The interactions between the cytoplasmic protein diaphanous-1 (Diaph1) and the receptor for advanced glycation endproducts (RAGE) drive the negative consequences of RAGE signaling in several disease processes. Reported in this work is how Diaph1 affects the nanoscale clustering and diffusion of RAGE measured using super-resolution stochastic optical reconstruction microscopy (STORM) and single particle tracking (SPT). Altering the Diaph1 binding site has a different impact on RAGE diffusion compared to when Diaph1 expression is reduced in HEK293 cells. In cells with reduced Diaph1 expression (RAGE-Diaph1-/-), the average RAGE diffusion coefficient is increased by 35%. RAGE diffusion is known to be influenced by the dynamics of the actin cytoskeleton. Actin labeling shows that a reduced Diaph1 expression leads to cells with reduced filopodia density and length. In contrast, when two RAGE amino acids that interact with Diaph1 are mutated (RAGERQ/AA), the average RAGE diffusion coefficient is decreased by 16%. Since RAGE diffusion is slowed when the interaction between Diaph1 and RAGE is disrupted, the interaction of the two proteins results in faster RAGE diffusion. In both RAGERQ/AA and RAGE-Diaph1-/- cells the number and size of RAGE clusters are decreased compared to cells expressing RAGE and native concentrations of Diaph1. This work shows that Diaph1 has a role in affecting RAGE clusters and diffusion.
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Affiliation(s)
- Qiaochu Zhu
- Department of Chemistry, Iowa State University, Ames, IA 50011, United States
| | - Emily A Smith
- Department of Chemistry, Iowa State University, Ames, IA 50011, United States.
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Jangde N, Ray R, Sinha S, Rana K, Singh SK, Khandagale P, Acharya N, Rai V. Cysteine mediated disulfide bond formation in RAGE V domain facilitates its functionally relevant dimerization. Biochimie 2018; 154:55-61. [PMID: 30076903 DOI: 10.1016/j.biochi.2018.07.024] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2018] [Accepted: 07/30/2018] [Indexed: 02/06/2023]
Abstract
Receptor for Advanced Glycation End product (RAGE) is a multiligand receptor implicated in diverse pathological conditions such as diabetes, atherosclerosis, cancer and neural diseases. Extracellular, RAGE consists of V, C1 and C2 domains. Here, we show RAGE exists as a monomer in equilibrium with a fraction of a covalently linked dimer of monomers via its V domain through cysteine. In order to understand the functional implication of this dimer, we examined the binding capacity and functional potential of RAGE dimer via advanced glycation end products (AGEs) which shows enhanced binding capacity towards V domain, ERK phosphorylation, cytokine release and actin polymerization ability of the dimeric form for AGEs compared with the reduced monomeric form. Our data, suggests that the dimeric state of RAGE controls its function and ligand mediated signaling which may play important role in RAGE mediated various diseases.
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Affiliation(s)
- Nitish Jangde
- Laboratory of Vascular Immunology, Institute of Life Sciences, Bhubaneswar, 751023, India; Manipal Academy of Higher Education, Manipal, Karnataka, 576104, India
| | - Rashmi Ray
- Laboratory of Vascular Immunology, Institute of Life Sciences, Bhubaneswar, 751023, India; Manipal Academy of Higher Education, Manipal, Karnataka, 576104, India
| | - Sunita Sinha
- Laboratory of Vascular Immunology, Institute of Life Sciences, Bhubaneswar, 751023, India
| | - Khokan Rana
- Laboratory of Vascular Immunology, Institute of Life Sciences, Bhubaneswar, 751023, India
| | - Satyendra Kumar Singh
- Laboratory of Vascular Immunology, Institute of Life Sciences, Bhubaneswar, 751023, India
| | - Prashant Khandagale
- Laboratory of Genomic Instability and Diseases, Institute of Life Sciences, Bhubaneswar, 751023, India
| | - Narottam Acharya
- Laboratory of Genomic Instability and Diseases, Institute of Life Sciences, Bhubaneswar, 751023, India
| | - Vivek Rai
- Laboratory of Vascular Immunology, Institute of Life Sciences, Bhubaneswar, 751023, India.
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Rouhiainen A, Nykänen NP, Kuja-Panula J, Vanttola P, Huttunen HJ, Rauvala H. Inhibition of Homophilic Interactions and Ligand Binding of the Receptor for Advanced Glycation End Products by Heparin and Heparin-Related Carbohydrate Structures. MEDICINES (BASEL, SWITZERLAND) 2018; 5:E79. [PMID: 30061484 PMCID: PMC6165534 DOI: 10.3390/medicines5030079] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/14/2018] [Revised: 07/08/2018] [Accepted: 07/23/2018] [Indexed: 01/12/2023]
Abstract
Background: Heparin and heparin-related sulphated carbohydrates inhibit ligand binding of the receptor for advanced glycation end products (RAGE). Here, we have studied the ability of heparin to inhibit homophilic interactions of RAGE in living cells and studied how heparin related structures interfere with RAGE⁻ligand interactions. Methods: Homophilic interactions of RAGE were studied with bead aggregation and living cell protein-fragment complementation assays. Ligand binding was analyzed with microwell binding and chromatographic assays. Cell surface advanced glycation end product binding to RAGE was studied using PC3 cell adhesion assay. Results: Homophilic binding of RAGE was mediated by V₁- and modulated by C₂-domain in bead aggregation assay. Dimerisation of RAGE on the living cell surface was inhibited by heparin. Sulphated K5 carbohydrate fragments inhibited RAGE binding to amyloid β-peptide and HMGB1. The inhibition was dependent on the level of sulfation and the length of the carbohydrate backbone. α-d-Glucopyranosiduronic acid (glycyrrhizin) inhibited RAGE binding to advanced glycation end products in PC3 cell adhesion and protein binding assays. Further, glycyrrhizin inhibited HMGB1 and HMGB1 A-box binding to heparin. Conclusions: Our results show that K5 polysaccharides and glycyrrhizin are promising candidates for RAGE targeting drug development.
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Affiliation(s)
- Ari Rouhiainen
- Neuroscience Center, University of Helsinki, 00014 Helsinki, Finland.
- Department of Biosciences, University of Helsinki, 00014 Helsinki, Finland.
| | - Niko-Petteri Nykänen
- Neuroscience Center, University of Helsinki, 00014 Helsinki, Finland.
- Department of Translational Neurodegeneration, German Center for Neurodegenerative Diseases (DZNE), D-81377 Munich, Germany.
| | - Juha Kuja-Panula
- Neuroscience Center, University of Helsinki, 00014 Helsinki, Finland.
| | - Päivi Vanttola
- Neuroscience Center, University of Helsinki, 00014 Helsinki, Finland.
- Faculty of Medicine, University of Helsinki, 00014 Helsinki, Finland.
| | - Henri J Huttunen
- Neuroscience Center, University of Helsinki, 00014 Helsinki, Finland.
| | - Heikki Rauvala
- Neuroscience Center, University of Helsinki, 00014 Helsinki, Finland.
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Long-term endurance running activity causes pulmonary changes depending on the receptor for advanced glycation end-products. Pflugers Arch 2018; 470:1543-1553. [PMID: 29982950 DOI: 10.1007/s00424-018-2175-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2018] [Revised: 06/05/2018] [Accepted: 06/26/2018] [Indexed: 10/28/2022]
Abstract
The receptor for advanced glycation end-products (RAGE) is an immunoglobulin superfamily cell adhesion molecule predominantly expressed in the lung, but its pulmonary importance is incompletely understood. Since RAGE alters the respiratory mechanics, which is also challenged by endurance running activity, we studied the RAGE-dependent effect of higher running activity on selected lung parameters in a long-term animal model using wild-type (WT) and RAGE knockout (RAGE-KO) mice. Higher long-term running activity of mice was ensured by providing a running wheel for 8 months. Recording the running activity revealed that RAGE-KO mice are more active than WT mice. RAGE-KO caused an increased lung compliance which additionally increased after long-term running activity with minor limitation of the expiratory flow, whereas the respiratory mechanics of WT mice remained constant. Although RAGE-KO mice had a less dense alveolar-capillary barrier for immune cells, higher long-term running activity led only in WT mice to more leukocyte infiltrations in the lung tissue and aggregations of lymphoid cells in the airways. In this regard, WT mice of the activity group were also more sensitive to ventilation-mediated airway damages. In contrast to RAGE-KO mice of the activity group, lungs of WT mice did not show an increase in the cAMP response element-binding protein, a transcription factor regulating many pro-survival genes. Our findings suggest an important role of RAGE in the physical capability due to its effect on the lung compliance as well as RAGE as a mediator of airway damages caused by higher long-term running activity.
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Chen J, Sun F, Chen P, Chai M, Xu L, Luo SZ. A study of the lipid-mediated dimerization of the RAGE TM+JM domains by molecular dynamic simulations. CHINESE CHEM LETT 2018. [DOI: 10.1016/j.cclet.2018.04.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Fuller KN, Valentine RJ, Miranda ER, Kumar P, Prabhakar BS, Haus JM. A single high-fat meal alters human soluble RAGE profiles and PBMC RAGE expression with no effect of prior aerobic exercise. Physiol Rep 2018; 6:e13811. [PMID: 30047241 PMCID: PMC6060105 DOI: 10.14814/phy2.13811] [Citation(s) in RCA: 11] [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: 06/20/2018] [Accepted: 07/02/2018] [Indexed: 12/18/2022] Open
Abstract
A high-fat diet can induce inflammation and metabolic diseases such as diabetes and atherosclerosis. The receptor for advanced glycation endproducts (RAGE) plays a critical role in metabolic disease pathophysiology and the soluble form of the receptor (sRAGE) can mitigate these effects. However, little is known about RAGE in the postprandial condition and the effect of exercise in this context. Thus, we aimed to determine the effects of a single high-fat meal (HFM) with and without prior exercise on peripheral blood mononuclear cell (PBMC) RAGE biology. Healthy males (n = 12) consumed a HFM on two occasions, one without prior exercise and one 16-18 hours following acute aerobic exercise. Total soluble RAGE (sRAGE) and endogenous secretory RAGE (esRAGE) were determined via ELISA and cleaved RAGE (cRAGE) was calculated as the difference between the two. Isolated PBMCs were analyzed for RAGE, ADAM10, TLR4, and MyD88 protein expression and ADAM10 activity. The HFM significantly (P < 0.01) attenuated sRAGE, esRAGE, and cRAGE by 9.7%, 6.9%, and 10.5%, respectively. Whereas, the HFM increased PBMC RAGE protein expression by 10.3% (P < 0.01), there was no meal effect on PBMC TLR4, MYD88, or ADAM10 protein expression, nor ADAM10 activity. There was also no exercise effect on any experimental outcomes. These findings suggest that PBMC RAGE and soluble RAGE may be important in the postprandial response to a HFM, and that prior aerobic exercise does not alter these processes in young healthy adult males. The mechanisms by which a HFM induces RAGE expression and reduces circulating soluble RAGE isoforms requires further study.
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Affiliation(s)
- Kelly N.Z. Fuller
- Department of Kinesiology and NutritionUniversity of Illinois at ChicagoChicagoIllinois
| | | | - Edwin R. Miranda
- Department of Kinesiology and NutritionUniversity of Illinois at ChicagoChicagoIllinois
- School of KinesiologyUniversity of MichiganAnn ArborMichigan
| | - Prabhakaran Kumar
- Department of Microbiology and ImmunologyUniversity of Illinois at ChicagoChicagoIllinois
| | - Bellur S. Prabhakar
- Department of Microbiology and ImmunologyUniversity of Illinois at ChicagoChicagoIllinois
| | - Jacob M. Haus
- Department of Kinesiology and NutritionUniversity of Illinois at ChicagoChicagoIllinois
- School of KinesiologyUniversity of MichiganAnn ArborMichigan
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Ferguson SA, Panos JJ, Sloper D, Varma V. Neurodegenerative Markers are Increased in Postmortem BA21 Tissue from African Americans with Alzheimer's Disease. J Alzheimers Dis 2018; 59:57-66. [PMID: 28582866 DOI: 10.3233/jad-170204] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
BACKGROUND Alzheimer's disease (AD) presents with an earlier onset age and increased symptom severity in African Americans and Hispanics. OBJECTIVE Although the prevalence of plaques and tangles may not exhibit ethnicity-related differences, levels of neurodegenerative proteins have not been described. METHODS Here, levels of five proteins (i.e., S100B, sRAGE, GDNF, Aβ40, and Aβ42) and the Aβ42/Aβ40 ratio were measured in postmortem samples of the middle temporal gyrus (BA21) from age-matched African Americans and Caucasians with AD (n = 6/gender/ethnicity). RESULTS S100B levels were increased 17% in African Americans (p < 0.003) while sRAGE was mildly decreased (p < 0.09). Aβ42 levels were increased 121% in African Americans (p < 0.02), leading to a 493% increase in the Aβ42/Aβ40 ratio (p < 0.002). Analysis of GDNF levels did not indicate any significant effects. There were no significant effects of gender and no significant ethnicity with gender interactions on any analyte. Effect size calculations indicated "medium" to "very large" effects. CONCLUSION S100B is typically elevated in AD cases; however, the increased levels in African Americans here may be indicative of increased severity in specific populations. Increased Aβ42/Aβ40 ratios in the current study are compatible with increased disease severity and might indicate increased AD pathogenesis in African Americans. Overall, these results are compatible with a hypothesis of increased neuroinflammation in African Americans with AD.
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Affiliation(s)
- Sherry A Ferguson
- Division of Neurotoxicology, National Center for Toxicological Research/Food and Drug Administration, Jefferson, AR, USA
| | - John J Panos
- Division of Neurotoxicology, National Center for Toxicological Research/Food and Drug Administration, Jefferson, AR, USA
| | - Daniel Sloper
- Division of Systems Biology, National Center for Toxicological Research/Food and Drug Administration, Jefferson, AR, USA
| | - Vijayalakshmi Varma
- Division of Systems Biology, National Center for Toxicological Research/Food and Drug Administration, Jefferson, AR, USA
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Frevert CW, Felgenhauer J, Wygrecka M, Nastase MV, Schaefer L. Danger-Associated Molecular Patterns Derived From the Extracellular Matrix Provide Temporal Control of Innate Immunity. J Histochem Cytochem 2018; 66:213-227. [PMID: 29290139 DOI: 10.1369/0022155417740880] [Citation(s) in RCA: 104] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
It is evident that components of the extracellular matrix (ECM) act as danger-associated molecular patterns (DAMPs) through direct interactions with pattern recognition receptors (PRRs) including Toll-like receptors (TLRs) and inflammasomes. Through these interactions, ECM-derived DAMPs autonomously trigger sterile inflammation or prolong pathogen-induced responses through the production of proinflammatory mediators and the recruitment of leukocytes to sites of injury and infection. Recent research, however, suggests that ECM-derived DAMPs are additionally involved in the resolution and fine-tuning of inflammation by orchestrating the production of anti-inflammatory mediators that are required for the resolution of tissue inflammation and the transition to acquired immunity. Thus, in this review, we discuss the current knowledge of the interplay between ECM-derived DAMPs and the innate immune signaling pathways that are activated to provide temporal control of innate immunity.
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Affiliation(s)
- Charles W Frevert
- Center for Lung Biology, University of Washington, Seattle, Washington
| | | | - Malgorzata Wygrecka
- Department of Biochemistry, Faculty of Medicine, Universities of Giessen and Marburg Lung Center, Giessen, Germany
| | - Madalina V Nastase
- Pharmazentrum Frankfurt/ZAFES, Institut für Allgemeine Pharmakologie und Toxikologie, Frankfurt am Main, Germany.,National Institute for Chemical-Pharmaceutical Research and Development, Bucharest, Romania
| | - Liliana Schaefer
- Pharmazentrum Frankfurt/ZAFES, Institut für Allgemeine Pharmakologie und Toxikologie, Frankfurt am Main, Germany
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Abstract
The receptor for advanced glycation end-products (RAGE) is a multiligand pattern recognition receptor implicated in diverse chronic inflammatory states. RAGE binds and mediates the cellular response to a range of damage-associated molecular pattern molecules (DAMPs) including AGEs, HMGB1, S100s, and DNA. RAGE can also act as an innate immune sensor of microbial pathogen-associated molecular pattern molecules (PAMPs) including bacterial endotoxin, respiratory viruses, and microbial DNA. RAGE is expressed at low levels under normal physiology, but it is highly upregulated under chronic inflammation because of the accumulation of various RAGE ligands. Blocking RAGE signaling in cell and animal models has revealed that targeting RAGE impairs inflammation and progression of diabetic vascular complications, cardiovascular disease (CVD), and cancer progression and metastasis. The clinical relevance of RAGE in inflammatory disease is being demonstrated in emerging clinical trials of novel small-molecule RAGE inhibitors.
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Affiliation(s)
- Barry I Hudson
- Department of Cell Biology, Leonard M. Miller School of Medicine, University of Miami, Miami, Florida 33136, USA; .,University of Miami Sylvester Comprehensive Cancer Center, Miami, Florida 33136, USA
| | - Marc E Lippman
- University of Miami Sylvester Comprehensive Cancer Center, Miami, Florida 33136, USA.,Department of Medicine, Leonard M. Miller School of Medicine, University of Miami, Miami, Florida 33136, USA;
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Gupta RK, Gupta K, Sharma A, Das M, Ansari IA, Dwivedi PD. Maillard reaction in food allergy: Pros and cons. Crit Rev Food Sci Nutr 2017; 58:208-226. [PMID: 26980434 DOI: 10.1080/10408398.2016.1152949] [Citation(s) in RCA: 82] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Food allergens have a notable potential to induce various health concerns in susceptible individuals. The majority of allergenic foods are usually subjected to thermal processing prior to their consumption. However, during thermal processing and long storage of foods, Maillard reaction (MR) often takes place. The MR is a non-enzymatic glycation reaction between the carbonyl group of reducing sugars and compounds having free amino groups. MR may sometimes be beneficial by damaging epitope of allergens and reducing allergenic potential, while exacerbation in allergic reactions may also occur due to changes in the motifs of epitopes or neoallergen generation. Apart from these modulations, non-enzymatic glycation can also modify the food protein(s) with various type of advance glycation end products (AGEs) such as Nϵ-(carboxymethyl-)lysine (CML), pentosidine, pyrraline, and methylglyoxal-H1 derived from MR. These Maillard products may act as immunogen by inducing the activation and proliferation of various immune cells. Literature is available to understand pathogenesis of glycation in the context of various diseases but there is hardly any review that can provide a thorough insight on the impact of glycation in food allergy. Therefore, present review explores the pathogenesis with special reference to food allergy caused by non-enzymatic glycation as well as AGEs.
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Affiliation(s)
- Rinkesh Kumar Gupta
- a Food, Drug and Chemical Toxicology Group, Indian Institute of Toxicology Research , Lucknow -, India.,b Department of Biosciences , Integral University , Lucknow , India
| | - Kriti Gupta
- a Food, Drug and Chemical Toxicology Group, Indian Institute of Toxicology Research , Lucknow -, India
| | - Akanksha Sharma
- a Food, Drug and Chemical Toxicology Group, Indian Institute of Toxicology Research , Lucknow -, India.,c Academy of Scientific and Innovative Research (AcSIR), CSIR-IITR Capmus , Lucknow , India
| | - Mukul Das
- a Food, Drug and Chemical Toxicology Group, Indian Institute of Toxicology Research , Lucknow -, India
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Lateral diffusion and signaling of receptor for advanced glycation end-products (RAGE): a receptor involved in chronic inflammation. EUROPEAN BIOPHYSICS JOURNAL: EBJ 2017. [DOI: 10.1007/s00249-017-1227-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Tang KT, Hsieh TY, Chao YH, Lin MX, Chen YH, Chen DY, Lin CC. Plasma levels of high-mobility group box 1 and soluble receptor for advanced glycation end products in primary antiphospholipid antibody syndrome patients. PLoS One 2017; 12:e0178404. [PMID: 28558055 PMCID: PMC5448773 DOI: 10.1371/journal.pone.0178404] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2016] [Accepted: 05/12/2017] [Indexed: 12/29/2022] Open
Abstract
Introduction Many studies have demonstrated elevated circulating levels of high-mobility group box 1 (HMGB1) and decreased circulating levels of soluble receptor for advanced glycation end products (sRAGE) in patients with autoimmune diseases. In the present study, we investigated plasma levels of both HMGB1 and sRAGE in primary antiphospholipid syndrome (pAPS) patients. Methods We prospectively recruited 11 pAPS patients, 17 antiphospholipid antibody (APA)-positive SLE patients without APS manifestations (APA+SLE) and 12 SLE patients with secondary APS (APS+SLE). We also recruited 10 healthy controls (HCs). Plasma levels of HMGB1 and sRAGE were determined using sandwich ELISA kits. In addition, plasma levels of HMGB1 were also determined using Western blot in 6 pAPS patients and 6 HCs. Results There was no significant difference in plasma levels of HMGB1 measured by ELISA among subgroups of the enrolled subjects. In addition, there was no significant difference in plasma levels of HMGB1 measured by Western blot between pAPS patients and HCs. On the other hand, we observed a trend toward lower plasma levels of sRAGE in APA+SLE or APS+SLE patients when compared with HCs. However, there was no significant difference in plasma levels of sRAGE between pAPS patients and HCs, or between APA+SLE patients and APS+SLE patients. Conclusion There was no significant difference in plasma levels of sRAGE or HMGB1 between pAPS patients and HCs. Plasma levels of sRAGE/HMGB1 could not be utilized to differentiate between APA+SLE and APS+SLE patients.
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Affiliation(s)
- Kuo-Tung Tang
- Division of Allergy, Immunology and Rheumatology, Taichung Veterans General Hospital, Taichung, R.O.C
- Ph.D. Program in Translational Medicine, National Chung Hsing University, Taichung, R.O.C
| | - Tsu-Yi Hsieh
- Division of Allergy, Immunology and Rheumatology, Taichung Veterans General Hospital, Taichung, R.O.C
| | - Ya-Hsuan Chao
- Institute of Biomedical Science and Rong Hsing Research Center for Translational Medicine, National Chung-Hsing University, Taichung, R.O.C
| | - Meng-Xian Lin
- Institute of Biomedical Science and Rong Hsing Research Center for Translational Medicine, National Chung-Hsing University, Taichung, R.O.C
| | - Yi-Hsing Chen
- Division of Allergy, Immunology and Rheumatology, Taichung Veterans General Hospital, Taichung, R.O.C
- School of Medicine, National Yang-Ming University, Taipei, R.O.C
| | - Der-Yuan Chen
- Division of Allergy, Immunology and Rheumatology, Taichung Veterans General Hospital, Taichung, R.O.C
- Institute of Biomedical Science and Rong Hsing Research Center for Translational Medicine, National Chung-Hsing University, Taichung, R.O.C
- School of Medicine, National Yang-Ming University, Taipei, R.O.C
- Department of Medical Research, Taichung Veterans General Hospital, Taichung, R.O.C
- Institute of Microbiology and Immunology, Chung Shan Medical University, Taichung, R.O.C
- * E-mail: (CCL); (DYC)
| | - Chi-Chen Lin
- Institute of Biomedical Science and Rong Hsing Research Center for Translational Medicine, National Chung-Hsing University, Taichung, R.O.C
- * E-mail: (CCL); (DYC)
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Bongarzone S, Savickas V, Luzi F, Gee AD. Targeting the Receptor for Advanced Glycation Endproducts (RAGE): A Medicinal Chemistry Perspective. J Med Chem 2017; 60:7213-7232. [PMID: 28482155 PMCID: PMC5601361 DOI: 10.1021/acs.jmedchem.7b00058] [Citation(s) in RCA: 186] [Impact Index Per Article: 26.6] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
![]()
The
receptor for advanced glycation endproducts (RAGE) is an ubiquitous,
transmembrane, immunoglobulin-like receptor that exists in multiple
isoforms and binds to a diverse range of endogenous extracellular
ligands and intracellular effectors. Ligand binding at the extracellular
domain of RAGE initiates a complex intracellular signaling cascade,
resulting in the production of reactive oxygen species (ROS), immunoinflammatory
effects, cellular proliferation, or apoptosis with concomitant upregulation
of RAGE itself. To date, research has mainly focused on the correlation
between RAGE activity and pathological conditions, such as cancer,
diabetes, cardiovascular diseases, and neurodegeneration. Because
RAGE plays a role in many pathological disorders, it has become an
attractive target for the development of inhibitors at the extracellular
and intracellular domains. This review describes the role of endogenous
RAGE ligands/effectors in normo- and pathophysiological processes,
summarizes the current status of exogenous small-molecule inhibitors
of RAGE and concludes by identifying key strategies for future therapeutic
intervention.
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Affiliation(s)
- Salvatore Bongarzone
- Division of Imaging Sciences and Biomedical Engineering, King's College London, King's Health Partners , St. Thomas' Hospital, London, SE1 7EH, United Kingdom
| | - Vilius Savickas
- Division of Imaging Sciences and Biomedical Engineering, King's College London, King's Health Partners , St. Thomas' Hospital, London, SE1 7EH, United Kingdom
| | - Federico Luzi
- Division of Imaging Sciences and Biomedical Engineering, King's College London, King's Health Partners , St. Thomas' Hospital, London, SE1 7EH, United Kingdom
| | - Antony D Gee
- Division of Imaging Sciences and Biomedical Engineering, King's College London, King's Health Partners , St. Thomas' Hospital, London, SE1 7EH, United Kingdom
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Zhou H, Ding L, Wu Z, Cao X, Zhang Q, Lin L, Bian JS. Hydrogen sulfide reduces RAGE toxicity through inhibition of its dimer formation. Free Radic Biol Med 2017; 104:262-271. [PMID: 28108276 DOI: 10.1016/j.freeradbiomed.2017.01.026] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/11/2016] [Revised: 12/30/2016] [Accepted: 01/16/2017] [Indexed: 12/11/2022]
Abstract
RAGE is important in the development of neurodegenerative diseases. The present study was designed to investigate the effect of hydrogen sulfide (H2S, an endogenous gaseous mediator) on the cytotoxicity caused by RAGE activation during the chronic oxidative stress. Aβ1-42 decreased cell viability and induced cell senescence in SH-SY5Y cells. Treatment with advanced glycation end products (AGEs) induced cell injury in HEK293 cells stably expressing RAGE (HEK293-RAGE) and stimulated inflammatory responses in SH-SY5Y cells. Pretreatment of SH-SY5Y cells with an H2S donor, NaHS, significantly attenuated the above harmful effects caused by Aβ1-42 or AGEs. Western blotting analysis shows that oxidative stress enhanced RAGE protein expression which was attenuated by either NaHS or over-expression of cystathionine β-synthase (CBS), a critical enzyme for producing H2S in brain cells. Both Western blots and split GFP complementation analysis demonstrate that NaHS reduced H2O2-enhanced RAGE dimerization. Immunofluorescence analysis shows that H2O2 up-regulated the membrane expression of wild-type RAGE. However, H2O2-enhanced expression of the RAGE harboring C259S/C310S double mutation (DM-RAGE) was observed in the endoplasmic reticulum. Treatment with NaHS attenuated the effects of H2O2 on the protein expression of WT-RAGE, but not that of DM-RAGE. Cycloheximide chase and ubiquitination assays show that NaHS reduced the half-life of WT-RAGE to a similar level of DM-RAGE. S-sulfhydration assay with the tag-switch technique demonstrate that H2S may directly S-sulfhydrate the C259/C301 residues. Our data suggest that H2S reduces RAGE dimer formation and impairs its membrane stability. The lowered plasma membrane abundance of RAGE therefore helps to protect cells against various RAGE mediated pathological effects.
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Affiliation(s)
- Hong Zhou
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, 117600 Singapore, Singapore
| | - Lei Ding
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, 117600 Singapore, Singapore
| | - Zhiyuan Wu
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, 117600 Singapore, Singapore; Life Science Institute, National University of Singapore, Singapore
| | - Xu Cao
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, 117600 Singapore, Singapore
| | - Qichun Zhang
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, 117600 Singapore, Singapore
| | - Li Lin
- Laboratory of Cardiovascular Sciences, National Institute on Aging, Baltimore, MD 21224, USA
| | - Jin-Song Bian
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, 117600 Singapore, Singapore; Life Science Institute, National University of Singapore, Singapore.
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RAGE-Mediated Suppression of Interleukin-10 Results in Enhanced Mortality in a Murine Model of Acinetobacter baumannii Sepsis. Infect Immun 2017; 85:IAI.00954-16. [PMID: 28052995 DOI: 10.1128/iai.00954-16] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2016] [Accepted: 12/29/2016] [Indexed: 12/17/2022] Open
Abstract
The receptor for advanced glycation end products (RAGE) is a pattern recognition receptor capable of recognizing multiple pathogen-associated and danger-associated molecular patterns that contributes to the initiation and potentiation of inflammation in many disease processes. During infection, RAGE functions to either exacerbate disease severity or enhance pathogen clearance depending on the pathogen studied. Acinetobacter baumannii is an opportunistic human pathogen capable of causing severe infections, including pneumonia and sepsis, in impaired hosts. The role of RAGE signaling in response to opportunistic bacterial infections is largely unknown. In murine models of A. baumannii pneumonia, RAGE signaling alters neither inflammation nor bacterial clearance. In contrast, RAGE-/- mice systemically infected with A. baumannii exhibit increased survival and reduced bacterial burdens in the liver and spleen. The increased survival of RAGE-/- mice is associated with increased circulating levels of the anti-inflammatory cytokine interleukin-10 (IL-10). Neutralization of IL-10 in RAGE-/- mice results in decreased survival during systemic A. baumannii infection that mirrors that of wild-type (WT) mice, and exogenous IL-10 administration to WT mice enhances survival in this model. These findings demonstrate the role for RAGE-dependent IL-10 suppression as a key modulator of mortality from Gram-negative sepsis.
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Abstract
The lining of the gastrointestinal tract needs to be easily accessible to nutrients and, at the same time, defend against pathogens and chemical challenges. This lining is the largest and most vulnerable surface that faces the outside world. To manage the dual problems of effective nutrient conversion and defence, the gut lining has a sophisticated system for detection of individual chemical entities, pathogenic organisms and their products, and physico-chemical properties of its contents. Detection is through specific receptors that signal to the gut endocrine system, the nervous system, the immune system and local tissue defence systems. These effectors, in turn, modify digestive functions and contribute to tissue defence. Receptors for nutrients include taste receptors for sweet, bitter and savoury, free fatty acid receptors, peptide and phytochemical receptors, that are primarily located on enteroendocrine cells. Hormones released by enteroendocrine cells act locally, through the circulation and via the nervous system, to optimise digestion and mucosal health. Pathogen detection is both through antigen presentation to T-cells and through pattern-recognition receptors (PRRs). Activation of PRRs triggers local tissue defence, for example, by causing release of antimicrobials from Paneth cells. Toxic chemicals, including plant toxins, are sensed and then avoided, expelled or metabolised. It continues to be a major challenge to develop a comprehensive understanding of the integrated responses of the gastrointestinal tract to its luminal contents.
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Ugrinova I, Pasheva E. HMGB1 Protein: A Therapeutic Target Inside and Outside the Cell. ADVANCES IN PROTEIN CHEMISTRY AND STRUCTURAL BIOLOGY 2016; 107:37-76. [PMID: 28215228 DOI: 10.1016/bs.apcsb.2016.10.001] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
High-mobility group box 1 protein (HMGB1) is a nonhistone chromosomal protein discovered more than 30 years ago. It is an abundant nuclear protein that has a dual function-in the nucleus, it binds DNA and participates in practically all DNA-dependent processes serving as an architectural factor. Outside the cell, HMGB1 plays a different role-it acts as an alarmine that activates a large number of HMGB1-"competent" cells and mediates a broad range of physiological and pathological responses. This universality makes it an attractive target for innovative therapeutic strategies in the treatment of various diseases. Here we present an overview of the major nuclear and extracellular properties of HMGB1 and describe its interaction with different molecular partners as specific receptors or inhibitors, which are important for its role as a target in multiple diseases. We highlight its pivotal role as a target for cancer treatment at two aspects: first in terms of its substantial impact on the repair capacity of cancer cells, thus affecting the effectiveness of chemotherapy with the antitumor drug cis-platinum and, second, the possibility to be targeted by microRNAs influencing different pathways of human diseases, thus making it a promising candidate for a new strategy for therapeutic interventions against various pathological conditions but mainly cancer.
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Affiliation(s)
- I Ugrinova
- "Roumen Tsanev" Institute of Molecular Biology, Bulgarian Academy of Sciences, Sofia, Bulgaria.
| | - E Pasheva
- "Roumen Tsanev" Institute of Molecular Biology, Bulgarian Academy of Sciences, Sofia, Bulgaria
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50
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Syed A, Zhu Q, Smith EA. Ligand binding affinity and changes in the lateral diffusion of receptor for advanced glycation endproducts (RAGE). BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2016; 1858:3141-3149. [DOI: 10.1016/j.bbamem.2016.10.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2016] [Revised: 09/22/2016] [Accepted: 10/03/2016] [Indexed: 12/16/2022]
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