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Hou YM, Xu BH, Zhang QT, Cheng J, Zhang X, Yang HR, Wang ZY, Wang P, Zhang MX. Deficiency of smooth muscle cell ILF3 alleviates intimal hyperplasia via HMGB1 mRNA degradation-mediated regulation of the STAT3/DUSP16 axis. J Mol Cell Cardiol 2024; 190:62-75. [PMID: 38583797 DOI: 10.1016/j.yjmcc.2024.04.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/30/2024] [Revised: 04/03/2024] [Accepted: 04/04/2024] [Indexed: 04/09/2024]
Abstract
Intimal hyperplasia is a complicated pathophysiological phenomenon attributable to in-stent restenosis, and the underlying mechanism remains unclear. Interleukin enhancer-binding factor 3 (ILF3), a double-stranded RNA-binding protein involved in regulating mRNA stability, has been recently demonstrated to assume a crucial role in cardiovascular disease; nevertheless, its impact on intimal hyperplasia remains unknown. In current study, we used samples of human restenotic arteries and rodent models of intimal hyperplasia, we found that vascular smooth muscle cell (VSMC) ILF3 expression was markedly elevated in human restenotic arteries and murine ligated carotid arteries. SMC-specific ILF3 knockout mice significantly suppressed injury induced neointimal formation. In vitro, platelet-derived growth factor type BB (PDGF-BB) treatment elevated the level of VSMC ILF3 in a dose- and time-dependent manner. ILF3 silencing markedly inhibited PDGF-BB-induced phenotype switching, proliferation, and migration in VSMCs. Transcriptome sequencing and RNA immunoprecipitation sequencing depicted that ILF3 maintained its stability upon binding to the mRNA of the high-mobility group box 1 protein (HMGB1), thereby exerting an inhibitory effect on the transcription of dual specificity phosphatase 16 (DUSP16) through enhanced phosphorylation of signal transducer and activator of transcription 3 (STAT3). Therefore, the results both in vitro and in vivo indicated that the loss of ILF3 in VSMC ameliorated neointimal hyperplasia by regulating the STAT3/DUSP16 axis through the degradation of HMGB1 mRNA. Our findings revealed that vascular injury activates VSMC ILF3, which in turn promotes intima formation. Consequently, targeting specific VSMC ILF3 may present a potential therapeutic strategy for ameliorating cardiovascular restenosis.
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Affiliation(s)
- Ya-Min Hou
- National Key Laboratory for Innovation and Transformation of Luobing Theory, The Key Laboratory of Cardiovascular Remodelling and Function Research, Chinese Ministry of Education, Chinese National Health Commission and Chinese Academy of Medical Sciences; Department of Cardiology, Qilu Hospital of Shandong University, Jinan, China
| | - Bo-Han Xu
- National Key Laboratory for Innovation and Transformation of Luobing Theory, The Key Laboratory of Cardiovascular Remodelling and Function Research, Chinese Ministry of Education, Chinese National Health Commission and Chinese Academy of Medical Sciences; Department of Cardiology, Qilu Hospital of Shandong University, Jinan, China
| | - Qiu-Ting Zhang
- National Key Laboratory for Innovation and Transformation of Luobing Theory, The Key Laboratory of Cardiovascular Remodelling and Function Research, Chinese Ministry of Education, Chinese National Health Commission and Chinese Academy of Medical Sciences; Department of Cardiology, Qilu Hospital of Shandong University, Jinan, China
| | - Jie Cheng
- National Key Laboratory for Innovation and Transformation of Luobing Theory, The Key Laboratory of Cardiovascular Remodelling and Function Research, Chinese Ministry of Education, Chinese National Health Commission and Chinese Academy of Medical Sciences; Department of Cardiology, Qilu Hospital of Shandong University, Jinan, China
| | - Xu Zhang
- National Key Laboratory for Innovation and Transformation of Luobing Theory, The Key Laboratory of Cardiovascular Remodelling and Function Research, Chinese Ministry of Education, Chinese National Health Commission and Chinese Academy of Medical Sciences; Department of Cardiology, Qilu Hospital of Shandong University, Jinan, China
| | - Hong-Rui Yang
- National Key Laboratory for Innovation and Transformation of Luobing Theory, The Key Laboratory of Cardiovascular Remodelling and Function Research, Chinese Ministry of Education, Chinese National Health Commission and Chinese Academy of Medical Sciences; Department of Cardiology, Qilu Hospital of Shandong University, Jinan, China
| | - Ze-Ying Wang
- National Key Laboratory for Innovation and Transformation of Luobing Theory, The Key Laboratory of Cardiovascular Remodelling and Function Research, Chinese Ministry of Education, Chinese National Health Commission and Chinese Academy of Medical Sciences; Department of Cardiology, Qilu Hospital of Shandong University, Jinan, China
| | - Peng Wang
- National Key Laboratory for Innovation and Transformation of Luobing Theory, The Key Laboratory of Cardiovascular Remodelling and Function Research, Chinese Ministry of Education, Chinese National Health Commission and Chinese Academy of Medical Sciences; Department of Cardiology, Qilu Hospital of Shandong University, Jinan, China
| | - Ming-Xiang Zhang
- National Key Laboratory for Innovation and Transformation of Luobing Theory, The Key Laboratory of Cardiovascular Remodelling and Function Research, Chinese Ministry of Education, Chinese National Health Commission and Chinese Academy of Medical Sciences; Department of Cardiology, Qilu Hospital of Shandong University, Jinan, China.
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2
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Li H, Zou L, Zheng J, Yang T. 12,13-diHOME attenuates high glucose-induced calcification of vascular smooth muscle cells through repressing CPT1A-mediated HMGB1 succinylation. Exp Cell Res 2024; 438:114031. [PMID: 38616032 DOI: 10.1016/j.yexcr.2024.114031] [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: 01/20/2024] [Revised: 04/03/2024] [Accepted: 04/04/2024] [Indexed: 04/16/2024]
Abstract
Diabetes is closely associated with vascular calcification (VC). Exorbitant glucose concentration activates pro-calcific effects in vascular smooth muscle cells (VSMCs). This study enrolled 159 elderly patients with type 2 diabetes and divided them into three groups, T1, T2 and T3, according to brachial-ankle pulse wave velocity(BaPWV). There were statistically significant differences in the waist circumference, waist hip ratio, systolic blood pressure, 12,13-diHOME (a lipokin) concentration among T1, T2 and T3. 12,13-diHOME levels were positively correlated to high density lipoprotein cholesterol and total cholesterol, but negatively correlated to with waist circumference, waist hip ratio, systolic blood pressure and baPWV. Studies in vitro showed that 12,13-diHOME effectively inhibits calcification in VSMCs under high glucose conditions. Notably, 12,13-diHOME suppressed the up-regulation of carnitine O-palmitoyltransferase 1 (CPT1A) and CPT1A-induced succinylation of HMGB1. The succinylation of HMGB1 at the K90 promoted the protein stability and induced the enrichment of HMGB1 in cytoplasm, which induced the calcification in VSMCs. Together, 12,13-diHOME attenuates high glucose-induced calcification in VSMCs through repressing CPT1A-mediated HMGB1 succinylation.
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MESH Headings
- Humans
- Muscle, Smooth, Vascular/metabolism
- Muscle, Smooth, Vascular/pathology
- Muscle, Smooth, Vascular/drug effects
- Carnitine O-Palmitoyltransferase/metabolism
- Carnitine O-Palmitoyltransferase/genetics
- HMGB1 Protein/metabolism
- Glucose/metabolism
- Glucose/pharmacology
- Male
- Aged
- Vascular Calcification/metabolism
- Vascular Calcification/pathology
- Female
- Myocytes, Smooth Muscle/metabolism
- Myocytes, Smooth Muscle/drug effects
- Myocytes, Smooth Muscle/pathology
- Diabetes Mellitus, Type 2/metabolism
- Diabetes Mellitus, Type 2/pathology
- Cells, Cultured
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Affiliation(s)
- Huahua Li
- Department of Endocrinology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China; Department of Geriatric, Hunan Provincial People's Hospital, The First Affiliated Hospital of Hunan Normal University, Changsha, China
| | - Lingling Zou
- Department of Geriatric, Hunan Provincial People's Hospital, The First Affiliated Hospital of Hunan Normal University, Changsha, China
| | - Jin Zheng
- Department of Geriatric, Hunan Provincial People's Hospital, The First Affiliated Hospital of Hunan Normal University, Changsha, China
| | - Tao Yang
- Department of Endocrinology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China.
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3
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Fan D, Zhang Y, Lu L, Yin F, Liu B. Uncovering the potential molecular mechanism of liraglutide to alleviate the effects of high glucose on myoblasts based on high-throughput transcriptome sequencing technique. BMC Genomics 2024; 25:159. [PMID: 38331723 PMCID: PMC10851481 DOI: 10.1186/s12864-024-10076-w] [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: 10/31/2023] [Accepted: 02/01/2024] [Indexed: 02/10/2024] Open
Abstract
BACKGROUND Myoblasts play an important role in muscle growth and repair, but the high glucose environment severely affects their function. The purpose of this study is to explore the potential molecular mechanism of liraglutide in alleviating the effects of high glucose environments on myoblasts. METHODS MTT, western blot, and ELISA methods were used to investigate the role of liraglutide on C2C12 myoblasts induced by high glucose. The high-throughput transcriptome sequencing technique was used to sequence C2C12 myoblasts from different treated groups. The DESeq2 package was used to identify differentially expressed-mRNAs (DE-mRNAs). Then, functional annotations and alternative splicing (AS) were performed. The Cytoscape-CytoHubba plug-in was used to identify multicentric DE-mRNAs. RESULTS The MTT assay results showed that liraglutide can alleviate the decrease of myoblasts viability caused by high glucose. Western blot and ELISA tests showed that liraglutide can promote the expression of AMPKα and inhibit the expression of MAFbx, MuRF1 and 3-MH in myoblasts. A total of 15 multicentric DE-mRNAs were identified based on the Cytoscape-CytoHubba plug-in. Among them, Top2a had A3SS type AS. Functional annotation identifies multiple signaling pathways such as metabolic pathways, cytokine-cytokine receptor interaction, cAMP signaling pathway and cell cycle. CONCLUSION Liraglutide can alleviate the decrease of cell viability and degradation of muscle protein caused by high glucose, and improves cell metabolism and mitochondrial activity. The molecular mechanism of liraglutide to alleviate the effect of high glucose on myoblasts is complex. This study provides a theoretical basis for the clinical effectiveness of liraglutide in the treatment of skeletal muscle lesions in diabetes.
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Affiliation(s)
- Dongmei Fan
- Department of Endocrinology, The First Hospital of QinHuangdao, 258 Wenhua Road, Haigang District, Qinhuangdao City, 066000, Hebei Province, China
| | - Yunjie Zhang
- Department of Nursing, The First Hospital of QinHuangdao, Qinhuangdao City, 066000, Hebei Province, China
| | - Lanyu Lu
- Department of Endocrinology, The First Hospital of QinHuangdao, 258 Wenhua Road, Haigang District, Qinhuangdao City, 066000, Hebei Province, China
| | - Fuzai Yin
- Department of Endocrinology, The First Hospital of QinHuangdao, 258 Wenhua Road, Haigang District, Qinhuangdao City, 066000, Hebei Province, China
| | - Bowei Liu
- Department of Endocrinology, The First Hospital of QinHuangdao, 258 Wenhua Road, Haigang District, Qinhuangdao City, 066000, Hebei Province, China.
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4
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Yang H, Liu Y, Chen G, Zhou B, Xu G, Li Q, Zhu L. Caspase-3/gasdermin-E axis facilitates the progression of coronary artery calcification by inducing the release of high mobility group box protein 1. Int Immunopharmacol 2024; 127:111454. [PMID: 38159554 DOI: 10.1016/j.intimp.2023.111454] [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: 10/15/2023] [Revised: 12/18/2023] [Accepted: 12/24/2023] [Indexed: 01/03/2024]
Abstract
Coronary artery calcification (CAC) is commonly observed in atherosclerotic plaques, which is a pathogenic factor for severe coronary artery disease (CAD). The phenotype changes of vascular smooth muscle cells (VSMCs) are found to participate in CAC progression, which is mainly induced by vascular inflammation and oxidative stress (OS). HMGB1, a critical inflammatory cytokine, is recently reported to induce arterial calcification, which is regulated by the Caspase-3/gasdermin-E (GSDME) axis. However, the function of the Caspase-3/GSDME axis in CAC is unknown. Herein, the involvement of the Caspase-3/GSDME axis in CAC was studied to explore the possible targets for CAC. CAC model was constructed in mice, which was verified by red cytoplasm in coronary artery tissues, increased macrophage infiltration, aggravated inflammation, and enhanced RAGE signaling, accompanied by an increased release of HMGB1 and an activated Caspase-3/ GSDME axis. In β-GP-treated MOVAS-1 cells, calcification, the ROS accumulation, enhanced LDH and HMGB1 release, enlarged macrophage production, aggravated inflammation, and activated RAGE signaling were observed, which were markedly abolished by the transfection of si-HMGB1 and si-GSDME. Moreover, the calcification deposition, the activity of Caspase-3/ GSDME axis, release of HMGB1, macrophage infiltration, cytokine production, and RAGE signaling in CAC mice were notably alleviated by VSMCs-specific GSDME knockdown, not by hematopoietic stem cells (HSCs)-specific GSDME knockdown. Collectively, Caspase-3/GSDME axis facilitated the progression of CAC by inducing the release of HMGB1.
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Affiliation(s)
- Honghui Yang
- Department of Cardiology, Zhengzhou University, Central China Fuwai Hospital, Zhengzhou 451464, PR China.
| | - Yingying Liu
- Department of Cardiology, Zhengzhou University, Central China Fuwai Hospital, Zhengzhou 451464, PR China
| | - Gengyu Chen
- Department of Cardiology, Zhengzhou University, Central China Fuwai Hospital, Zhengzhou 451464, PR China
| | - Botong Zhou
- Department of Cardiology, Zhengzhou University, Central China Fuwai Hospital, Zhengzhou 451464, PR China
| | - Guian Xu
- Department of Cardiology, Zhengzhou University, Central China Fuwai Hospital, Zhengzhou 451464, PR China
| | - Qingman Li
- Department of Cardiology, Zhengzhou University, Central China Fuwai Hospital, Zhengzhou 451464, PR China
| | - Lijie Zhu
- Department of Cardiology, Zhengzhou University, Central China Fuwai Hospital, Zhengzhou 451464, PR China
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5
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Kang JH, Kawano T, Murata M, Toita R. Vascular calcification and cellular signaling pathways as potential therapeutic targets. Life Sci 2024; 336:122309. [PMID: 38042282 DOI: 10.1016/j.lfs.2023.122309] [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: 10/05/2023] [Revised: 11/21/2023] [Accepted: 11/24/2023] [Indexed: 12/04/2023]
Abstract
Increased vascular calcification (VC) is observed in patients with cardiovascular diseases such as atherosclerosis, diabetes, and chronic kidney disease. VC is divided into three types according to its location: intimal, medial, and valvular. Various cellular signaling pathways are associated with VC, including the Wnt, mitogen-activated protein kinase, phosphatidylinositol-3 kinase/Akt, cyclic nucleotide-dependent protein kinase, protein kinase C, calcium/calmodulin-dependent kinase II, adenosine monophosphate-activated protein kinase/mammalian target of rapamycin, Ras homologous GTPase, apoptosis, Notch, and cytokine signaling pathways. In this review, we discuss the literature concerning the key cellular signaling pathways associated with VC and their role as potential therapeutic targets. Inhibitors to these pathways represent good candidates for use as potential therapeutic agents for the prevention and treatment of VC.
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Affiliation(s)
- Jeong-Hun Kang
- National Cerebral and Cardiovascular Center Research Institute, 6-1 Shinmachi, Kishibe, Suita, Osaka 564-8565, Japan.
| | - Takahito Kawano
- Center for Advanced Medical Innovation, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan
| | - Masaharu Murata
- Center for Advanced Medical Innovation, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan
| | - Riki Toita
- Biomedical Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), 1-8-31 Midorigaoka, Ikeda, Osaka, 563-8577, Japan; AIST-Osaka University Advanced Photonics and Biosensing Open Innovation Laboratory, AIST, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
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6
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Lin X, Xiang QY, Li S, Song WL, Wang YJ, Ni YQ, Zhao Y, Li C, Wang Y, Li HH, Liang Z, Zhan JK, Liu YS. BMF-AS1/BMF Promotes Diabetic Vascular Calcification and Aging both In Vitro and In Vivo. Aging Dis 2023; 14:170-183. [PMID: 36818559 PMCID: PMC9937703 DOI: 10.14336/ad.2022.0427] [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: 11/21/2021] [Accepted: 04/27/2022] [Indexed: 11/18/2022] Open
Abstract
Vascular calcification and aging often increase morbidity and mortality in patients with diabetes mellitus (DM); however, the underlying mechanisms are still unknown. In the present study, we found that Bcl-2 modifying factor (BMF) and BMF antisense RNA 1 (BMF-AS1) were significantly increased in high glucose-induced calcified and senescent vascular smooth muscle cells (VSMCs) as well as artery tissues from diabetic mice. Inhibition of BMF-AS1 and BMF reduced the calcification and senescence of VSMCs, whereas overexpression of BMF-AS1 and BMF generates the opposite results. Mechanistic analysis showed that BMF-AS1 interacted with BMF directly and up-regulated BMF at both mRNA and protein levels, but BMF did not affect the expression of BMF-AS1. Moreover, knocking down BMF-AS1 and BMF suppressed the calcification and senescence of VSMCs, and BMF knockout (BMF-/-) diabetic mice presented less vascular calcification and aging compared with wild type diabetic mice. In addition, higher coronary artery calcification scores (CACs) and increased plasma BMF concentration were found in patients with DM, and there was a positive correlation between CACs and plasma BMF concentration. Thus, BMF-AS1/BMF plays a key role in promoting high glucose-induced vascular calcification and aging both in vitro and in vivo. BMF-AS1 and BMF represent potential therapeutic targets in diabetic vascular calcification and aging.
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Affiliation(s)
- Xiao Lin
- Department of Geriatrics, the Second Xiangya Hospital of Central South University, Hunan, China.,Department of Radiology, the Second Xiangya Hospital of Central South University, Hunan, China.
| | - Qun-Yan Xiang
- Department of Geriatrics, the Second Xiangya Hospital of Central South University, Hunan, China.,Institute of Aging and Age-related Disease Research, Central South University, Hunan, China.
| | - Shuang Li
- Department of Geriatrics, the Second Xiangya Hospital of Central South University, Hunan, China.,Institute of Aging and Age-related Disease Research, Central South University, Hunan, China.
| | - Wan-Ling Song
- Department of Biochemistry, University of Oxford, Oxford, UK.
| | - Yan-Jiao Wang
- Department of Geriatrics, the Second Xiangya Hospital of Central South University, Hunan, China.,Institute of Aging and Age-related Disease Research, Central South University, Hunan, China.
| | - Yu-Qing Ni
- Department of Geriatrics, the Second Xiangya Hospital of Central South University, Hunan, China.,Institute of Aging and Age-related Disease Research, Central South University, Hunan, China.
| | - Yan Zhao
- Department of Geriatrics, the Second Xiangya Hospital of Central South University, Hunan, China.,Institute of Aging and Age-related Disease Research, Central South University, Hunan, China.
| | - Chen Li
- Department of Geriatrics, the Second Xiangya Hospital of Central South University, Hunan, China.,Institute of Aging and Age-related Disease Research, Central South University, Hunan, China.
| | - Yi Wang
- Department of Geriatrics, the Second Xiangya Hospital of Central South University, Hunan, China.,Institute of Aging and Age-related Disease Research, Central South University, Hunan, China.
| | - Hua-Hua Li
- Department of Geriatrics, Hunan Provincial People's Hospital, the First Affiliated Hospital of Hunan Normal University, Hunan, China.
| | - Zhen Liang
- Department of Geriatrics, Shenzhen People's Hospital (the Second Clinical Medical College, Jinan University; the First Affiliated Hospital, Southern University of Science and Technology), Guangdong, China
| | - Jun-Kun Zhan
- Department of Geriatrics, the Second Xiangya Hospital of Central South University, Hunan, China.,Institute of Aging and Age-related Disease Research, Central South University, Hunan, China.,Correspondence should be addressed to: Dr. You-Shuo Liu (E-mail: ) and Jun-Kun Zhan (E-mail: ). the Second Xiangya Hospital of Central South University, Changsha, Hunan, China
| | - You-Shuo Liu
- Department of Geriatrics, the Second Xiangya Hospital of Central South University, Hunan, China.,Institute of Aging and Age-related Disease Research, Central South University, Hunan, China.,Correspondence should be addressed to: Dr. You-Shuo Liu (E-mail: ) and Jun-Kun Zhan (E-mail: ). the Second Xiangya Hospital of Central South University, Changsha, Hunan, China
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7
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Liu L, Yang H, Kuang SJ, Zhang L, Zhou MY, Zeng P, Zhang MZ, Rao F, Zhou ZL, Deng CY. Contribution of calcium dysregulation to impaired coronary artery contraction in Zucker diabetic fatty rats. Clin Exp Pharmacol Physiol 2023; 50:158-168. [PMID: 36309970 DOI: 10.1111/1440-1681.13733] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Revised: 10/08/2022] [Accepted: 10/23/2022] [Indexed: 01/05/2023]
Abstract
Diabetic coronary artery injury is closely associated with Ca2+ dysregulation, although the underlying mechanism remains unclear. This study explored the role and mechanism of Ca2+ handling in coronary artery dysfunction in type 2 diabetic rats. Zucker diabetic fatty (ZDF) rats were used as the type 2 diabetes mellitus model. The contractility of coronary artery rings induced by KCl, CaCl2 , 5-HT and U46619 was significantly lower in ZDF rats than in Zucker lean rats. Vasoconstriction induced by 5-HT and U46619 was greatly inhibited by nifedipine. However, in the presence of 1 μM nifedipine or in the Ca2+ -free KH solution containing 1 μM nifedipine, there was no difference in the vasoconstriction between Zucker lean and ZDF rats. Store-operated calcium channels (SOCs) were not involved in coronary vasoconstriction. The downregulation of contractile proteins and the upregulation of synthesized proteins were in coronary artery smooth muscle cells (CASMCs) from ZDF rats. Metformin reversed the reduction of vasoconstriction in ZDF rats. Taken together, L-type calcium channel is important for regulating the excitation-contraction coupling of VSMCs in coronary arteries, and dysregulation of this channel contributes to the decreased contractility of coronary arteries in T2DM.
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Affiliation(s)
- Lin Liu
- Guangdong Provincial Key Laboratory of Clinical Pharmacology, Research Center of Medical Sciences, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China.,Department of Cardiology, Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China.,Zhuhai hospital affiliated with Jinan University (Zhuhai People's Hospital), Zhuhai, China.,School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, China
| | - Hui Yang
- Guangdong Provincial Key Laboratory of Clinical Pharmacology, Research Center of Medical Sciences, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China.,Department of Cardiology, Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Su-Juan Kuang
- Guangdong Provincial Key Laboratory of Clinical Pharmacology, Research Center of Medical Sciences, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China.,Department of Cardiology, Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Li Zhang
- Guangdong Provincial Key Laboratory of Clinical Pharmacology, Research Center of Medical Sciences, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China.,School of biological science and engineering, South China University of Technology, Guangzhou, China
| | - Meng-Yuan Zhou
- Guangdong Provincial Key Laboratory of Clinical Pharmacology, Research Center of Medical Sciences, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China.,School of biological science and engineering, South China University of Technology, Guangzhou, China
| | - Peng Zeng
- Guangdong Provincial Key Laboratory of Clinical Pharmacology, Research Center of Medical Sciences, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China.,Department of Cardiology, Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Meng-Zhen Zhang
- Guangdong Provincial Key Laboratory of Clinical Pharmacology, Research Center of Medical Sciences, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China.,Department of Cardiology, Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Fang Rao
- Guangdong Provincial Key Laboratory of Clinical Pharmacology, Research Center of Medical Sciences, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China.,Department of Cardiology, Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Zhi-Ling Zhou
- Zhuhai hospital affiliated with Jinan University (Zhuhai People's Hospital), Zhuhai, China
| | - Chun-Yu Deng
- Guangdong Provincial Key Laboratory of Clinical Pharmacology, Research Center of Medical Sciences, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China.,Department of Cardiology, Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China.,School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, China.,School of biological science and engineering, South China University of Technology, Guangzhou, China
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8
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Belmadani S, Matrougui K. Role of High Mobility Group Box 1 in Cardiovascular Diseases. Inflammation 2022; 45:1864-1874. [PMID: 35386038 PMCID: PMC11145736 DOI: 10.1007/s10753-022-01668-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Revised: 02/27/2022] [Accepted: 03/28/2022] [Indexed: 11/05/2022]
Abstract
High Mobility Group Box 1 (HMGB1) is a ubiquitous, highly conserved nuclear and cytosolic protein that has diverse biological roles depending on its cellular location and posttranslational modifications. The HMGB1 is localized in the nucleus but can be translocated to the cytoplasm to modulate the intracellular signaling and eventually secreted outside the cells. It is widely established that HMGB1 plays a key role in inflammation; however, the role of HMGB1 in the cardiovascular diseases is not well understood. In this review, we will discuss the latest reports on the pathophysiological link between HMGB1 and cardiovascular complications, with special emphasis on the inflammation. Thus, the understanding of the role of HMGB1 may provide new insights into developing new HMGB1-based therapies.
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Affiliation(s)
- Souad Belmadani
- Department of Physiological Sciences, EVMS, Norfolk, Virginia, 23501, USA
| | - Khalid Matrougui
- Department of Physiological Sciences, EVMS, Norfolk, Virginia, 23501, USA.
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9
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Turner ME, Bartoli‐Leonard F, Aikawa E. Small particles with large impact: Insights into the unresolved roles of innate immunity in extracellular vesicle‐mediated cardiovascular calcification. Immunol Rev 2022; 312:20-37. [DOI: 10.1111/imr.13134] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Mandy E Turner
- Division of Cardiovascular Medicine Department of Medicine Center for Interdisciplinary Cardiovascular Sciences Brigham and Women's Hospital Harvard Medical School Boston Massachusetts USA
| | - Francesca Bartoli‐Leonard
- Division of Cardiovascular Medicine Department of Medicine Center for Interdisciplinary Cardiovascular Sciences Brigham and Women's Hospital Harvard Medical School Boston Massachusetts USA
| | - Elena Aikawa
- Division of Cardiovascular Medicine Department of Medicine Center for Interdisciplinary Cardiovascular Sciences Brigham and Women's Hospital Harvard Medical School Boston Massachusetts USA
- Division of Cardiovascular Medicine Department of Medicine Center for Excellence in Vascular Biology Brigham and Women's Hospital Harvard Medical School Boston Massachusetts USA
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10
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Jeong JH, Lee DH, Song J. HMGB1 signaling pathway in diabetes-related dementia: Blood-brain barrier breakdown, brain insulin resistance, and Aβ accumulation. Biomed Pharmacother 2022; 150:112933. [PMID: 35413600 DOI: 10.1016/j.biopha.2022.112933] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Revised: 04/05/2022] [Accepted: 04/06/2022] [Indexed: 11/28/2022] Open
Abstract
Diabetes contributes to the onset of various diseases, including cancer and cardiovascular and neurodegenerative diseases. Recent studies have highlighted the similarities and relationship between diabetes and dementia as an important issue for treating diabetes-related cognitive deficits. Diabetes-related dementia exhibits several features, including blood-brain barrier disruption, brain insulin resistance, and Aβ over-accumulation. High-mobility group box1 (HMGB1) is a protein known to regulate gene transcription and cellular mechanisms by binding to DNA or chromatin via receptor for advanced glycation end-products (RAGE) and toll-like receptor 4 (TLR4). Recent studies have demonstrated that the interplay between HMGB1, RAGE, and TLR4 can impact both neuropathology and diabetic alterations. Herein, we review the recent research regarding the roles of HMGB1-RAGE-TLR4 axis in diabetes-related dementia from several perspectives and emphasize the importance of the influence of HMGB1 in diabetes-related dementia.
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Affiliation(s)
- Jae-Ho Jeong
- Department of Microbiology, Chonnam National University Medical School, Hwasun 58128, Jeollanam-do, Republic of Korea.
| | - Dong Hoon Lee
- Department of Otolaryngology-Head and Neck Surgery, Chonnam National University Medical School, and Chonnam National University Hwasun Hospital, Hwasun 58128, Jeollanam-do, Republic of Korea.
| | - Juhyun Song
- Department of Anatomy, Chonnam National University Medical School, Hwasun 58128, Jeollanam-do, Republic of Korea.
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11
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Henze LA, Estepa M, Pieske B, Lang F, Eckardt KU, Alesutan I, Voelkl J. Zinc Ameliorates the Osteogenic Effects of High Glucose in Vascular Smooth Muscle Cells. Cells 2021; 10:cells10113083. [PMID: 34831306 PMCID: PMC8623153 DOI: 10.3390/cells10113083] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2021] [Revised: 10/23/2021] [Accepted: 11/02/2021] [Indexed: 12/18/2022] Open
Abstract
In diabetic patients, medial vascular calcification is common and associated with increased cardiovascular mortality. Excessive glucose concentrations can activate the nuclear factor kappa-light-chain-enhancer of activated B-cells (NF-kB) and trigger pro-calcific effects in vascular smooth muscle cells (VSMCs), which may actively augment vascular calcification. Zinc is able to mitigate phosphate-induced VSMC calcification. Reduced serum zinc levels have been reported in diabetes mellitus. Therefore, in this study the effects of zinc supplementation were investigated in primary human aortic VSMCs exposed to excessive glucose concentrations. Zinc treatment was found to abrogate the stimulating effects of high glucose on VSMC calcification. Furthermore, zinc was found to blunt the increased expression of osteogenic and chondrogenic markers in high glucose-treated VSMCs. High glucose exposure was shown to activate NF-kB in VSMCs, an effect that was blunted by additional zinc treatment. Zinc was further found to increase the expression of TNFα-induced protein 3 (TNFAIP3) in high glucose-treated VSMCs. The silencing of TNFAIP3 was shown to abolish the protective effects of zinc on high glucose-induced NF-kB-dependent transcriptional activation, osteogenic marker expression, and the calcification of VSMCs. Silencing of the zinc-sensing receptor G protein-coupled receptor 39 (GPR39) was shown to abolish zinc-induced TNFAIP3 expression and the effects of zinc on high glucose-induced osteogenic marker expression. These observations indicate that zinc may be a protective factor during vascular calcification in hyperglycemic conditions.
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Affiliation(s)
- Laura A. Henze
- Department of Internal Medicine and Cardiology, Charité—Universitätsmedizin Berlin, Campus Virchow-Klinikum, 13353 Berlin, Germany; (L.A.H.); (M.E.); (B.P.)
| | - Misael Estepa
- Department of Internal Medicine and Cardiology, Charité—Universitätsmedizin Berlin, Campus Virchow-Klinikum, 13353 Berlin, Germany; (L.A.H.); (M.E.); (B.P.)
| | - Burkert Pieske
- Department of Internal Medicine and Cardiology, Charité—Universitätsmedizin Berlin, Campus Virchow-Klinikum, 13353 Berlin, Germany; (L.A.H.); (M.E.); (B.P.)
| | - Florian Lang
- Department of Vegetative and Clinical Physiology, Eberhard Karls University Tübingen, 72076 Tübingen, Germany;
| | - Kai-Uwe Eckardt
- Department of Nephrology and Medical Intensive Care, Charité—Universitätsmedizin Berlin, 13353 Berlin, Germany; (K.-U.E.); (J.V.)
| | - Ioana Alesutan
- Institute for Physiology and Pathophysiology, Johannes Kepler University Linz, 4040 Linz, Austria
- Correspondence: ; Tel.: +43-732-2468-8990
| | - Jakob Voelkl
- Department of Nephrology and Medical Intensive Care, Charité—Universitätsmedizin Berlin, 13353 Berlin, Germany; (K.-U.E.); (J.V.)
- Institute for Physiology and Pathophysiology, Johannes Kepler University Linz, 4040 Linz, Austria
- DZHK (German Centre for Cardiovascular Research), Partner Site Berlin, 13347 Berlin, Germany
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12
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Verbascoside Protects Gingival Cells against High Glucose-Induced Oxidative Stress via PKC/HMGB1/RAGE/NFκB Pathway. Antioxidants (Basel) 2021; 10:antiox10091445. [PMID: 34573077 PMCID: PMC8464661 DOI: 10.3390/antiox10091445] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2021] [Revised: 09/07/2021] [Accepted: 09/09/2021] [Indexed: 12/28/2022] Open
Abstract
Impaired wound healing often occurs in patients with diabetes and causes great inconvenience to them. Aside from the presence of prolonged inflammation, the accumulation of oxidative stress is also implicated in the delayed wound healing. In the present study, we tested the effect of verbascoside, a caffeoyl phenylethanoid glycoside, on the improvement of cell viability and wound healing capacity of gingival epithelial cells under high glucose condition. We showed that verbascoside attenuated the high glucose-induced cytotoxicity and impaired healing, which may be associated with the downregulation of oxidative stress. Our results demonstrated that verbascoside increased the activity of the antioxidant enzyme SOD and reduced the oxidative stress indicator, 8-OHdG, as well as apoptosis. Moreover, verbascoside upregulated the PGC1-α and NRF1 expression and promoted mitochondrial biogenesis, which was mediated by suppression of PKC/HMGB1/RAGE/NFκB signaling. Likewise, we showed the inhibitory effect of verbascoside on oxidative stress was via repression of PKC/HMGB1/RAGE/NFκB activation. Also, our data suggested that the PKC-mediated oxidative stress may lead to the elevated production of inflammatory cytokines, IL-6 and IL-1β. Collectively, we demonstrated that verbascoside may be beneficial to ameliorate impaired oral wound healing for diabetic patients.
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13
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Liu L, Wang X, Liu K, Kang J, Wang S, Song Y, Zhou K, Yi L, Liu X. Inhibition of inducible nitric oxide synthase improved erectile dysfunction in rats with type 1 diabetes. Andrologia 2021; 53:e14138. [PMID: 34137064 DOI: 10.1111/and.14138] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2021] [Revised: 05/13/2021] [Accepted: 05/14/2021] [Indexed: 12/30/2022] Open
Abstract
Diabetes mellitus (DM), which is closely related to microvascular dysfunction, is a risk factor for erectile dysfunction (ED). Furthermore, the upregulation of inducible nitric oxide synthase (iNOS) is associated with systemic vascular dysfunction in rats with diabetes. The purpose of this study was to investigate the role of iNOS in diabetes mellitus erectile dysfunction (DMED). First, we developed a type 1 DM rat model using streptozotocin and selected those that developed DMED. Then, we injected these rats with the 1400W, an iNOS inhibitor, for 10 weeks and subsequently assessed their ED. Lastly, we performed various molecular studies and histopathological analyses of penile tissues collected from these rats after the experiments. Through the histopathological studies, we also found that the treatment restored the ratios of the smooth muscle to collagen fibres, delayed the development of microvascular injury and alleviated the oxidative stress caused by hyperglycaemia. Based on these results, we confirmed that upregulation of iNOS leads to microvascular dysfunction in patients with ED. Overall, we found that inhibition of iNOS displayed beneficial effects in the treatment of ED, suggesting that its mechanism should be further explored.
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Affiliation(s)
- Li Liu
- Department of Urology, Tianjin Medical University General Hospital, Tianjin Medical University, Tianjin, China
| | - Xiao Wang
- Department of Urology, Tianjin Medical University General Hospital, Tianjin Medical University, Tianjin, China
| | - Kang Liu
- Department of Urology, Tianjin Medical University General Hospital, Tianjin Medical University, Tianjin, China
| | - Jiaqi Kang
- Department of Urology, Tianjin Medical University General Hospital, Tianjin Medical University, Tianjin, China
| | - Shangren Wang
- Department of Urology, Tianjin Medical University General Hospital, Tianjin Medical University, Tianjin, China
| | - Yuxuan Song
- Department of Urology, Tianjin Medical University General Hospital, Tianjin Medical University, Tianjin, China
| | - Kechong Zhou
- Department of Urology, Tianjin Medical University General Hospital, Tianjin Medical University, Tianjin, China
| | - Lu Yi
- Department of Urology, Tianjin Medical University General Hospital, Tianjin Medical University, Tianjin, China
| | - Xiaoqiang Liu
- Department of Urology, Tianjin Medical University General Hospital, Tianjin Medical University, Tianjin, China
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14
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Chen Z, Li R, Pei LG, Wei ZH, Xie J, Wu H, Xu B. High-mobility group box-1 promotes vascular calcification in diabetic mice via endoplasmic reticulum stress. J Cell Mol Med 2021; 25:3724-3734. [PMID: 33724642 PMCID: PMC8051722 DOI: 10.1111/jcmm.16075] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Revised: 10/05/2020] [Accepted: 10/25/2020] [Indexed: 12/20/2022] Open
Abstract
Several studies reported the role of endoplasmic reticulum stress (ERS) in vascular calcification. High-mobility group box-1 (HMGB-1) plays a substantial role in diabetes and its complications. However, relatively little information is available regarding the association between HMGB-1 and calcification, and the underlying mechanism has still remained elusive. Therefore, in the present study, we attempted to indicate whether HMGB-1 could promote vascular calcification via ERS in diabetes. After induction of diabetes by Streptozotocin (STZ), mice were treated with glycyrrhizin (Gly) or 4-phenylbutyrate (4-PBA). Mineral deposition was confirmed by reverse transcription-polymerase chain reaction (RT-PCR) and calcium assay. In cell experiments, calcification of vascular smooth muscle cells (VSMCs) was performed with Alizarin Red staining, alkaline phosphatase (ALP) activity and RT-PCR. Expression and location of HMGB-1 in aortic tissue were detected by Western blotting, immunocytochemistry (ICC) and immunohistochemistry (IHC). Diabetic mice demonstrated increased HMGB-1 expression, ERS and vascular calcification. However, inhibition of HMGB-1 with Gly or inhibition of ERS with 4-PBA ameliorated the enhanced vascular calcification and ERS in diabetic mice. In vitro experiments unveiled that inhibition of HMGB-1 attenuated advanced glycation end products (AGEs)-induced ERS in VSMCs. In addition, AGEs promoted translocation and secretion of HMGB-1 in VSMCs, which was reversed by 4-PBA. Moreover, VSMCs exhibited increased mineralization and osteogenic gene expressions in response to HMGB-1 and AGEs. However, inhibition of ERS with 4-PBA partially, although noticeably, attenuated VSMC calcification induced by HMGB-1. Thus, diabetes induced translocation and secretion of HMGB-1 via ERS, which resulted in calcification in diabetic mice and in AGEs-treated VSMCs.
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Affiliation(s)
- Zheng Chen
- Department of Cardiology, Nanjing Drum Tower Hospital, the Affiliated Hospital of Nanjing University Medical School, Nanjing, China
| | - Ran Li
- Department of Cardiology, Nanjing Drum Tower Hospital, the Affiliated Hospital of Nanjing University Medical School, Nanjing, China
| | - Li-Gang Pei
- Department of Cardiology, Nanjing Drum Tower Hospital, the Affiliated Hospital of Nanjing University Medical School, Nanjing, China
| | - Zhong-Hai Wei
- Department of Cardiology, Nanjing Drum Tower Hospital, the Affiliated Hospital of Nanjing University Medical School, Nanjing, China
| | - Jun Xie
- Department of Cardiology, Nanjing Drum Tower Hospital, the Affiliated Hospital of Nanjing University Medical School, Nanjing, China
| | - Han Wu
- Department of Cardiology, Nanjing Drum Tower Hospital, the Affiliated Hospital of Nanjing University Medical School, Nanjing, China
| | - Biao Xu
- Department of Cardiology, Nanjing Drum Tower Hospital, the Affiliated Hospital of Nanjing University Medical School, Nanjing, China
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15
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Yao H, Sun Z, Zang G, Zhang L, Hou L, Shao C, Wang Z. Epidemiological Research Advances in Vascular Calcification in Diabetes. J Diabetes Res 2021; 2021:4461311. [PMID: 34631895 PMCID: PMC8500764 DOI: 10.1155/2021/4461311] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Revised: 08/27/2021] [Accepted: 09/11/2021] [Indexed: 12/29/2022] Open
Abstract
Vascular calcification is the transformation of arterial wall mesenchymal cells, particularly smooth muscle cells (SMCs), into osteoblast phenotypes by various pathological factors. Additionally, vascular transformation mediates the abnormal deposition of calcium salts in the vascular wall, such as intimal and media calcification. Various pathological types have been described, such as calcification and valve calcification. The incidence of vascular calcification in patients with diabetes is much higher than that in nondiabetic patients, representing a critical cause of cardiovascular events in patients with diabetes. Because basic research on the clinical transformation of vascular calcification has yet to be conducted, this study systematically expounds on the risk factors for vascular calcification, vascular bed differences, sex differences, ethnic differences, diagnosis, severity assessments, and treatments to facilitate the identification of a new entry point for basic research and subsequent clinical transformation regarding vascular calcification and corresponding clinical evaluation strategies.
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Affiliation(s)
- Haipeng Yao
- Department of Cardiology, Affiliated Hospital of Jiangsu University, Zhenjiang, China
| | - Zhen Sun
- Department of Cardiology, Affiliated Hospital of Jiangsu University, Zhenjiang, China
| | - Guangyao Zang
- Department of Cardiology, Affiliated Hospital of Jiangsu University, Zhenjiang, China
| | - Lili Zhang
- Department of Cardiology, Affiliated Hospital of Jiangsu University, Zhenjiang, China
| | - Lina Hou
- Department of Cardiology, Affiliated Hospital of Jiangsu University, Zhenjiang, China
| | - Chen Shao
- Department of Cardiology, Affiliated Hospital of Jiangsu University, Zhenjiang, China
| | - Zhongqun Wang
- Department of Cardiology, Affiliated Hospital of Jiangsu University, Zhenjiang, China
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16
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Cankurt T, Celik İE, Ozturk S, Maden O. Inflammatory Conditions in Acute Coronary Syndrome Patients Treated with Percutaneous Coronary Intervention of Saphenous Vein Graft. Int J Angiol 2020; 29:237-244. [PMID: 33268974 PMCID: PMC7690989 DOI: 10.1055/s-0040-1714751] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
The study aimed to evaluate the inflammatory blood parameters in acute coronary syndrome (ACS) patients with a history of coronary artery bypass graft (CABG) and treated with percutaneous coronary intervention (PCI) of saphenous vein graft (SVG). A total of 347 patients who underwent urgent SVG PCI with the diagnosis of ACS were included in the study. After the application of exclusion criteria, 79 patients were allocated into two groups, namely, successful PCI ( n = 59) and unsuccessful PCI ( n = 20), and included in the statistical analysis. Neutrophil-to-lymphocyte ratio (NLR) and platelet-to-lymphocyte ratio (PLR) levels were significantly higher in patients with unsuccessful SVG PCI. In the logistic regression analysis, PLR, C-reactive protein, and diabetes mellitus emerged as independent factors associated with unsuccessful SVG PCI. The area under the curve for PLR was 0.70 (95% confidence interval: 0.55-0.85, p = 0.006). The cut-off value of PLR (128.99) was associated with 70.0% sensitivity and 69.5% specificity. Elevated inflammatory status is associated with unsuccessful PCI of SVG in ACS patients. Increased PLR levels on admission is an independent predictor of this situation. This cheap and simple marker can help us to predict unsuccessful SVG PCI in ACS patients.
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Affiliation(s)
- Tayyar Cankurt
- Cardiology Clinic, Amasya University Sabuncuoglu Sereefeddin State Hospital, Ankara, Turkey
| | - İbrahim E. Celik
- Department of Cardiology, University of Health Sciences, Ankara Education and Research Hospital, Ankara, Turkey
| | - Selcuk Ozturk
- Department of Cardiology, University of Health Sciences, Ankara Education and Research Hospital, Ankara, Turkey
| | - Orhan Maden
- Department of Cardiology, University of Health Sciences, Ankara Bilkent City Hospital, Ankara, Turkey
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17
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Role of SGK1 in the Osteogenic Transdifferentiation and Calcification of Vascular Smooth Muscle Cells Promoted by Hyperglycemic Conditions. Int J Mol Sci 2020; 21:ijms21197207. [PMID: 33003561 PMCID: PMC7583813 DOI: 10.3390/ijms21197207] [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: 07/06/2020] [Revised: 09/20/2020] [Accepted: 09/22/2020] [Indexed: 02/07/2023] Open
Abstract
In diabetes mellitus, hyperglycemia promotes the osteogenic transdifferentiation of vascular smooth muscle cells (VSMCs) to enhance medial vascular calcification, a common complication strongly associated with cardiovascular disease and mortality. The mechanisms involved are, however, still poorly understood. Therefore, the present study explored the potential role of serum- and glucocorticoid-inducible kinase 1 (SGK1) during vascular calcification promoted by hyperglycemic conditions. Exposure to high-glucose conditions up-regulated the SGK1 expression in primary human aortic VSMCs. High glucose increased osteogenic marker expression and activity and, thus, promoted the osteogenic transdifferentiation of VSMCs, effects significantly suppressed by additional treatment with the SGK1 inhibitor EMD638683. Moreover, high glucose augmented the mineralization of VSMCs in the presence of calcification medium, effects again significantly reduced by SGK1 inhibition. Similarly, SGK1 knockdown blunted the high glucose-induced osteogenic transdifferentiation of VSMCs. The osteoinductive signaling promoted by high glucose required SGK1-dependent NF-kB activation. In addition, advanced glycation end products (AGEs) increased the SGK1 expression in VSMCs, and SGK1 inhibition was able to interfere with AGEs-induced osteogenic signaling. In conclusion, SGK1 is up-regulated and mediates, at least partly, the osteogenic transdifferentiation and calcification of VSMCs during hyperglycemic conditions. Thus, SGK1 inhibition may reduce the development of vascular calcification promoted by hyperglycemia in diabetes.
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18
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Belmokhtar K, Ortillon J, Jaisson S, Massy ZA, Boulagnon Rombi C, Doué M, Maurice P, Fritz G, Gillery P, Schmidt AM, Rieu P, Touré F. Receptor for advanced glycation end products: a key molecule in the genesis of chronic kidney disease vascular calcification and a potential modulator of sodium phosphate co-transporter PIT-1 expression. Nephrol Dial Transplant 2020; 34:2018-2030. [PMID: 30778553 DOI: 10.1093/ndt/gfz012] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2018] [Accepted: 01/05/2019] [Indexed: 12/27/2022] Open
Abstract
BACKGROUND Chronic kidney disease (CKD) is associated with increased cardiovascular mortality, frequent vascular calcification (VC) and accumulation of uraemic toxins. Advanced glycation end products and S100 proteins interact with the receptor for advanced glycation end products (RAGE). In the present work, we aimed to investigate the role(s) of RAGE in the CKD-VC process. METHODS Apoe-/- or Apoe-/-Ager (RAGE)-/- male mice were assigned to CKD or sham-operated groups. A high-phosphate diet was given to a subgroup of Apoe-/-and Apoe-/-Ager-/- CKD mice. Primary cultures of Ager+/+ and Ager-/- vascular smooth muscle cells (VSMCs) were established and stimulated with either vehicle, inorganic phosphate (Pi) or RAGE ligands (S100A12; 20 µM). RESULTS After 12 weeks of CKD we observed a significant increase in RAGE ligand (AGE and S100 proteins) concentrations in the serum of CKD Apoe-/- mice. Ager messenger RNA (mRNA) levels were 4-fold higher in CKD vessels of Apoe-/- mice. CKD Apoe-/- but not CKD Apoe-/- or Ager-/- mice displayed a marked increase in the VC surface area. Similar trends were found in the high-phosphate diet condition. mRNA levels of Runx2 significantly increased in the Apoe-/- CKD group. In vitro, stimulation of Ager+/+VSMCs with Pi or S100A12 induced mineralization and osteoblast transformation, and this was inhibited by phosphonoformic acid (Pi co-transporters inhibitor) and Ager deletion. In vivo and in vitro RAGE was necessary for regulation of the expression of Pit-1, at least in part through production of reactive oxygen species. CONCLUSION RAGE, through the modulation of Pit-1 expression, is a key molecule in the genesis of VC.
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Affiliation(s)
- Karim Belmokhtar
- Université de Reims Champagne-Ardenne, CNRS UMR 7369 (Matrice Extracellulaire et Dynamique Cellulaire, MEDyC), Reims, France.,Laboratoire de Néphrologie, Univesrity of Reims, Faculté de Médecine, Reims, France
| | - Jeremy Ortillon
- Université de Reims Champagne-Ardenne, CNRS UMR 7369 (Matrice Extracellulaire et Dynamique Cellulaire, MEDyC), Reims, France.,Laboratoire de Néphrologie, Univesrity of Reims, Faculté de Médecine, Reims, France
| | - Stéphane Jaisson
- Université de Reims Champagne-Ardenne, CNRS UMR 7369 (Matrice Extracellulaire et Dynamique Cellulaire, MEDyC), Reims, France.,University Hospital of Reims, Maison Blanche Hospital, Laboratory of Pediatric Biology and Research, Reims, France
| | - Ziad A Massy
- Division of Nephrology, Ambroise Paré Hospital, APHP, Versailles Saint-Quentin-en-Yvelines University (Paris-Ile-de-France-Ouest University), UVSQ, Boulogne Billancourt/Paris, France.,Inserm U1018, Team5, CESP, Paris Saclay Unioversityand Versailles Saint-Quentin-en-Yvelines University (Paris-Ile-de-France-Ouest University, UVSQ), Villejuif, France
| | - Camille Boulagnon Rombi
- Université de Reims Champagne-Ardenne, CNRS UMR 7369 (Matrice Extracellulaire et Dynamique Cellulaire, MEDyC), Reims, France.,CHU Reims, Division of Anatomopathology, Reims, France
| | - Manon Doué
- Université de Reims Champagne-Ardenne, CNRS UMR 7369 (Matrice Extracellulaire et Dynamique Cellulaire, MEDyC), Reims, France
| | - Pascal Maurice
- Université de Reims Champagne-Ardenne, CNRS UMR 7369 (Matrice Extracellulaire et Dynamique Cellulaire, MEDyC), Reims, France
| | - Günter Fritz
- Institute of Neuropathology, University of Freiburg, Germany
| | - Philippe Gillery
- Université de Reims Champagne-Ardenne, CNRS UMR 7369 (Matrice Extracellulaire et Dynamique Cellulaire, MEDyC), Reims, France.,University Hospital of Reims, Maison Blanche Hospital, Laboratory of Pediatric Biology and Research, Reims, France
| | | | - Philippe Rieu
- Université de Reims Champagne-Ardenne, CNRS UMR 7369 (Matrice Extracellulaire et Dynamique Cellulaire, MEDyC), Reims, France.,Laboratoire de Néphrologie, Univesrity of Reims, Faculté de Médecine, Reims, France.,CHU Reims, Division of Nephrology, Reims, France
| | - Fatouma Touré
- Université de Reims Champagne-Ardenne, CNRS UMR 7369 (Matrice Extracellulaire et Dynamique Cellulaire, MEDyC), Reims, France.,Laboratoire de Néphrologie, Univesrity of Reims, Faculté de Médecine, Reims, France.,CHU Reims, Division of Nephrology, Reims, France
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19
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De Maré A, D’Haese PC, Verhulst A. The Role of Sclerostin in Bone and Ectopic Calcification. Int J Mol Sci 2020; 21:ijms21093199. [PMID: 32366042 PMCID: PMC7246472 DOI: 10.3390/ijms21093199] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Revised: 04/27/2020] [Accepted: 04/29/2020] [Indexed: 02/06/2023] Open
Abstract
Sclerostin, a 22-kDa glycoprotein that is mainly secreted by the osteocytes, is a soluble inhibitor of canonical Wnt signaling. Therefore, when present at increased concentrations, it leads to an increased bone resorption and decreased bone formation. Serum sclerostin levels are known to be increased in the elderly and in patients with chronic kidney disease. In these patient populations, there is a high incidence of ectopic cardiovascular calcification. These calcifications are strongly associated with cardiovascular morbidity and mortality. Although data are still controversial, it is likely that there is a link between ectopic calcification and serum sclerostin levels. The main question, however, remains whether sclerostin exerts either a protective or deleterious role in the ectopic calcification process.
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20
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Zhou DM, Ran F, Ni HZ, Sun LL, Xiao L, Li XQ, Li WD. Metformin inhibits high glucose-induced smooth muscle cell proliferation and migration. Aging (Albany NY) 2020; 12:5352-5361. [PMID: 32208365 PMCID: PMC7138554 DOI: 10.18632/aging.102955] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2019] [Accepted: 02/20/2020] [Indexed: 12/17/2022]
Abstract
We investigated the protective effects and mechanism of action of metformin on high glucose-induced smooth muscle cell proliferation and migration. Vascular smooth muscle cells (VSMCs) were subjected to a series of concentrations (0-10 mM) of metformin. CCK-8, wound healing, and transwell assays were performed. Correlations between metformin concentration and high-mobility group box 1 (HMGB1) and miR-142-3p levels were assessed. In addition, miR-142-3p mimic and siRNA were used to investigate VSMC migration in the presence or absence of metformin. In the high-glucose condition, metformin decreased cell growth and inhibited cell migration. HMGB1 gene expression correlated negatively with metformin concentration, whereas miR-142-3p expression correlated positively with metformin concentration. In addition, mimic-induced miR-142-3p elevation resulted in decreased HMGB1 and LC3II levels and elevated p62 levels in the high-glucose condition, whereas miR-142-3p knockdown had the reverse effects, and metformin abolished those effects. Metformin inhibits high glucose–induced VSMC hyperproliferation and increased migration by inducing miR-142-3p-mediated inhibition of HMGB1 expression via the HMGB1-autophagy related pathway.
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Affiliation(s)
- Dong-Ming Zhou
- Department of Hematology, The Affiliated Drum Tower Hospital, Nanjing University Medical School, Jiangsu, China
| | - Feng Ran
- Department of Vascular Surgery, The Affiliated Drum Tower Hospital, Nanjing University Medical School, Jiangsu, China
| | - Hai-Zhen Ni
- Department of Vascular Surgery, The Second Affiliated Hospital of Soochow University, Jiangsu, China.,Department of Vascular Surgery, The First Affiliated Hospital of Wenzhou Medical University, Zhejiang, China
| | - Li-Li Sun
- Department of Vascular Surgery, The Second Affiliated Hospital of Soochow University, Jiangsu, China
| | - Lun Xiao
- Department of Vascular Surgery, The Affiliated Drum Tower Hospital, Nanjing University Medical School, Jiangsu, China
| | - Xiao-Qiang Li
- Department of Vascular Surgery, The Affiliated Drum Tower Hospital, Nanjing University Medical School, Jiangsu, China
| | - Wen-Dong Li
- Department of Vascular Surgery, The Affiliated Drum Tower Hospital, Nanjing University Medical School, Jiangsu, China
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Egaña-Gorroño L, López-Díez R, Yepuri G, Ramirez LS, Reverdatto S, Gugger PF, Shekhtman A, Ramasamy R, Schmidt AM. Receptor for Advanced Glycation End Products (RAGE) and Mechanisms and Therapeutic Opportunities in Diabetes and Cardiovascular Disease: Insights From Human Subjects and Animal Models. Front Cardiovasc Med 2020; 7:37. [PMID: 32211423 PMCID: PMC7076074 DOI: 10.3389/fcvm.2020.00037] [Citation(s) in RCA: 108] [Impact Index Per Article: 27.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2019] [Accepted: 02/25/2020] [Indexed: 12/21/2022] Open
Abstract
Obesity and diabetes are leading causes of cardiovascular morbidity and mortality. Although extensive strides have been made in the treatments for non-diabetic atherosclerosis and its complications, for patients with diabetes, these therapies provide less benefit for protection from cardiovascular disease (CVD). These considerations spur the concept that diabetes-specific, disease-modifying therapies are essential to identify, especially as the epidemics of obesity and diabetes continue to expand. Hence, as hyperglycemia is a defining feature of diabetes, it is logical to probe the impact of the specific consequences of hyperglycemia on the vessel wall, immune cell perturbation, and endothelial dysfunction-all harbingers to the development of CVD. In this context, high levels of blood glucose stimulate the formation of the irreversible advanced glycation end products, the products of non-enzymatic glycation and oxidation of proteins and lipids. AGEs accumulate in diabetic circulation and tissues and the interaction of AGEs with their chief cellular receptor, receptor for AGE or RAGE, contributes to vascular and immune cell perturbation. The cytoplasmic domain of RAGE lacks endogenous kinase activity; the discovery that this intracellular domain of RAGE binds to the formin, DIAPH1, and that DIAPH1 is essential for RAGE ligand-mediated signal transduction, identifies the specific cellular means by which RAGE functions and highlights a new target for therapeutic interruption of RAGE signaling. In human subjects, prominent signals for RAGE activity include the presence and levels of two forms of soluble RAGE, sRAGE, and endogenous secretory (es) RAGE. Further, genetic studies have revealed single nucleotide polymorphisms (SNPs) of the AGER gene (AGER is the gene encoding RAGE) and DIAPH1, which display associations with CVD. This Review presents current knowledge regarding the roles for RAGE and DIAPH1 in the causes and consequences of diabetes, from obesity to CVD. Studies both from human subjects and animal models are presented to highlight the breadth of evidence linking RAGE and DIAPH1 to the cardiovascular consequences of these metabolic disorders.
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Affiliation(s)
- Lander Egaña-Gorroño
- Diabetes Research Program, Division of Endocrinology, Diabetes and Metabolism, Department of Medicine, New York University School of Medicine, New York, NY, United States
| | - Raquel López-Díez
- Diabetes Research Program, Division of Endocrinology, Diabetes and Metabolism, Department of Medicine, New York University School of Medicine, New York, NY, United States
| | - Gautham Yepuri
- Diabetes Research Program, Division of Endocrinology, Diabetes and Metabolism, Department of Medicine, New York University School of Medicine, New York, NY, United States
| | - Lisa S. Ramirez
- Department of Chemistry, University of Albany, State University of New York, Albany, NY, United States
| | - Sergey Reverdatto
- Department of Chemistry, University of Albany, State University of New York, Albany, NY, United States
| | - Paul F. Gugger
- Diabetes Research Program, Division of Endocrinology, Diabetes and Metabolism, Department of Medicine, New York University School of Medicine, New York, NY, United States
| | - Alexander Shekhtman
- Department of Chemistry, University of Albany, State University of New York, Albany, NY, United States
| | - Ravichandran Ramasamy
- Diabetes Research Program, Division of Endocrinology, Diabetes and Metabolism, Department of Medicine, New York University School of Medicine, New York, NY, United States
| | - Ann Marie Schmidt
- Diabetes Research Program, Division of Endocrinology, Diabetes and Metabolism, Department of Medicine, New York University School of Medicine, New York, NY, United States
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RAGE/NF-κB pathway mediates hypoxia-induced insulin resistance in 3T3-L1 adipocytes. Biochem Biophys Res Commun 2020; 521:77-83. [DOI: 10.1016/j.bbrc.2019.10.076] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2019] [Accepted: 10/09/2019] [Indexed: 12/26/2022]
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Chang Z, Yan G, Yan H, Zheng J, Liu Z. Reticulocalbin 2 enhances osteogenic differentiation of human vascular smooth muscle cells in diabetic conditions. Life Sci 2019; 233:116746. [DOI: 10.1016/j.lfs.2019.116746] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2019] [Revised: 07/19/2019] [Accepted: 08/08/2019] [Indexed: 12/12/2022]
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Bartoli-Leonard F, Wilkinson FL, Langford-Smith AWW, Alexander MY, Weston R. The Interplay of SIRT1 and Wnt Signaling in Vascular Calcification. Front Cardiovasc Med 2018; 5:183. [PMID: 30619890 PMCID: PMC6305318 DOI: 10.3389/fcvm.2018.00183] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2018] [Accepted: 12/04/2018] [Indexed: 12/24/2022] Open
Abstract
Vascular calcification is a major health risk and is highly correlated with atherosclerosis, diabetes, and chronic kidney disease. The development of vascular calcification is an active and complex process linked with a multitude of signaling pathways, which regulate promoters and inhibitors of osteogenesis, the balance of which become deregulated in disease conditions. SIRT1, a protein deacetylase, known to be protective in inhibiting oxidative stress and inflammation within the vessel wall, has been shown as a possible key player in modulating the cell-fate determining canonical Wnt signaling pathways. Suppression of SIRT1 has been reported in patients suffering with cardiovascular pathologies, suggesting that the sustained acetylation of osteogenic factors could contribute to their activation and in turn, lead to the progression of calcification. There is clear evidence of the synergy between β-Catenin and elevated Runx2, and with Wnt signaling being β-Catenin dependent, further understanding is needed as to how these molecular pathways converge and interact, in order to provide novel insight into the mechanism by which smooth muscle cells switch to an osteogenic differentiation programme. Therefore, this review will describe the current concepts of pathological soft tissue mineralization, with a focus on the contribution of SIRT1 as a regulator of Wnt signaling and its targets, discussing SIRT1 as a potential target for manipulation and therapy.
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Affiliation(s)
- Francesca Bartoli-Leonard
- Translational Cardiovascular Science, Centre for Bioscience, Manchester Metropolitan University, Manchester, United Kingdom
| | - Fiona L Wilkinson
- Translational Cardiovascular Science, Centre for Bioscience, Manchester Metropolitan University, Manchester, United Kingdom
| | - Alex W W Langford-Smith
- Translational Cardiovascular Science, Centre for Bioscience, Manchester Metropolitan University, Manchester, United Kingdom
| | - M Y Alexander
- Translational Cardiovascular Science, Centre for Bioscience, Manchester Metropolitan University, Manchester, United Kingdom
| | - Ria Weston
- Translational Cardiovascular Science, Centre for Bioscience, Manchester Metropolitan University, Manchester, United Kingdom
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Guo Y, Xiao Z, Wang Y, Yao W, Liao S, Yu B, Zhang J, Zhang Y, Zheng B, Ren B, Gong Q. Sodium Butyrate Ameliorates Streptozotocin-Induced Type 1 Diabetes in Mice by Inhibiting the HMGB1 Expression. Front Endocrinol (Lausanne) 2018; 9:630. [PMID: 30410469 PMCID: PMC6209660 DOI: 10.3389/fendo.2018.00630] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/04/2018] [Accepted: 10/04/2018] [Indexed: 12/16/2022] Open
Abstract
Type 1 diabetes (T1D) is an autoimmune disease characterized by the immune cell-mediated progressive destruction of pancreatic β-cells. High-mobility group box 1 protein (HMGB1) has been recognized as a potential immune mediator to enhance the development of T1D. So we speculated that HMGB1 inhibitors could have anti-diabetic effect. Sodium butyrate is a short fatty acid derivative possessing anti-inflammatory activity by inhibiting HMGB1. In the current study, we evaluated the effects of sodium butyrate in streptozotocin (STZ)-induced T1D mice model. Diabetes was induced by multiple low-dose injections of STZ (40 mg/kg/day for 5 consecutive days), and then sodium butyrate (500 mg/kg/day) was administered by intraperitoneal injection for 7 consecutive days after STZ treatment. Blood glucose, incidence of diabetes, body weight, pancreatic histopathology, the amounts of CD4+T cell subsets, IL-1β level in serum and pancreatic expressions levels of HMGB1, and NF-κB p65 protein were analyzed. The results showed that sodium butyrate treatment decreased blood glucose and serum IL-1β, improved the islet morphology and decreased inflammatory cell infiltration, restored the unbalanced Th1/Th2 ratio, and down-regulated Th17 to normal level. In addition, sodium butyrate treatment can inhibit the pancreatic HMGB1 and NF-κB p65 protein expression. Therefore, we proposed that sodium butyrate should ameliorate STZ-induced T1D by down-regulating NF-κB mediated inflammatory signal pathway through inhibiting HMGB1.
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Affiliation(s)
- Yu Guo
- Department of Immunology, School of Medicine, Yangtze University, Jingzhou, China
| | - Zheng Xiao
- Department of Immunology, School of Medicine, Yangtze University, Jingzhou, China
| | - Yanan Wang
- Department of Immunology, School of Medicine, Yangtze University, Jingzhou, China
| | - Weihua Yao
- Department of Immunology, School of Medicine, Yangtze University, Jingzhou, China
| | - Shun Liao
- Department of Immunology, School of Medicine, Yangtze University, Jingzhou, China
| | - Bo Yu
- Department of Immunology, School of Medicine, Yangtze University, Jingzhou, China
| | - Jianqiang Zhang
- Department of Immunology, School of Medicine, Yangtze University, Jingzhou, China
| | - Yanxiang Zhang
- Department of Immunology, School of Medicine, Yangtze University, Jingzhou, China
- Clinical Molecular Immunology Center, School of Medicine, Yangtze University, Jingzhou, China
| | - Bing Zheng
- Department of Immunology, School of Medicine, Yangtze University, Jingzhou, China
- Clinical Molecular Immunology Center, School of Medicine, Yangtze University, Jingzhou, China
| | - Boxu Ren
- Department of Immunology, School of Medicine, Yangtze University, Jingzhou, China
- Clinical Molecular Immunology Center, School of Medicine, Yangtze University, Jingzhou, China
| | - Quan Gong
- Department of Immunology, School of Medicine, Yangtze University, Jingzhou, China
- Clinical Molecular Immunology Center, School of Medicine, Yangtze University, Jingzhou, China
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Chu Y, Wang Y, Zheng Z, Lin Y, He R, Liu J, Yang X. Proinflammatory Effect of High Glucose Concentrations on HMrSV5 Cells via the Autocrine Effect of HMGB1. Front Physiol 2017; 8:762. [PMID: 29033853 PMCID: PMC5627536 DOI: 10.3389/fphys.2017.00762] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2017] [Accepted: 09/19/2017] [Indexed: 12/27/2022] Open
Abstract
Background: Peritoneal fibrosis, in which inflammation and apoptosis play crucial pathogenic roles, is a severe complication associated with the treatment of kidney failure with peritoneal dialysis (PD) using a glucose-based dialysate. Mesothelial cells (MCs) take part in the inflammatory processes by producing various cytokines and chemokines, such as monocyte chemoattractant protein 1 (MCP-1) and interleukin 8 (IL-8). The apoptosis of MCs induced by high glucose levels also contributes to complications of PD. High mobility group protein B1 (HMGB1) is an inflammatory factor that has repeatedly been proven to be related to the occurrence of peritoneal dysfunction. Aim: In this study, we aimed to explore the effect and underlying mechanism of endogenous HMGB1 in high-glucose-induced MC injury. Methods: The human peritoneal MC line, HMrSV5 was cultured in high-glucose medium and incubated with recombinant HMGB1. Cellular expression of HMGB1 was blocked using HMGB1 small interfering RNA (siRNA). Apoptosis and production of inflammatory factors as well as the potential intermediary signaling pathways were examined. Results: The major findings of these analyses were: (1) MCs secreted HMGB1 from the nucleus during exposure to high glucose levels; HMGB1 acted in an autocrine fashion on the MCs to promote the production of MCP-1 and IL-8; (2) HMGB1 had little effect on high-glucose-induced apoptosis of the MCs; and (3) HMGB1-mediated MCP-1 and IL-8 production depended on the activation of MAPK signaling pathways. In conclusion, endogenous HMGB1 plays an important role in the inflammatory reaction induced by high glucose on MCs via mitogen-activated protein kinase (MAPK) signaling pathways, but it seems to have little effect on high-glucose-induced apoptosis.
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Affiliation(s)
- Yuening Chu
- Department of Nephrology, Shanghai General Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Yi Wang
- Department of Oncology, Renji Hospital, School of Medicine, Shanghai Cancer Institute, Shanghai Jiao Tong University, Shanghai, China
| | - Zhihuang Zheng
- Department of Nephrology, Shanghai General Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Yuli Lin
- Department of Immunology and Key Laboratory of Medical Molecular Virology of Ministries of Education and Health, School of Basic Medical Sciences, Fudan University, Shanghai, China
| | - Rui He
- Department of Immunology and Key Laboratory of Medical Molecular Virology of Ministries of Education and Health, School of Basic Medical Sciences, Fudan University, Shanghai, China
| | - Jun Liu
- Department of Nephrology, Shanghai General Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Xuguang Yang
- Department of Oncology, Renji Hospital, School of Medicine, Shanghai Cancer Institute, Shanghai Jiao Tong University, Shanghai, China
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Klotho suppresses high phosphate-induced osteogenic responses in human aortic valve interstitial cells through inhibition of Sox9. J Mol Med (Berl) 2017; 95:739-751. [PMID: 28332126 DOI: 10.1007/s00109-017-1527-3] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2016] [Revised: 02/27/2017] [Accepted: 03/08/2017] [Indexed: 12/19/2022]
Abstract
Elevated level of blood phosphate (Pi) associated with chronic kidney disease (CKD) is a risk factor of aortic valve calcification. Aortic valve interstitial cells (AVICs) display osteogenic responses to high Pi although the underlying mechanism is incompletely understood. Sox9 is a pro-chondrogenic factor and may play a role in ectopic tissue calcification. Circulating and kidney levels of Klotho are reduced in patients with CKD. We hypothesized that Sox9 mediates high Pi-induced osteogenic responses in human AVICs and that Klotho inhibits the responses. Treatment of human AVICs with high Pi increased protein levels of Runt-related transcription factor 2 (Runx2) and alkaline phosphatase (ALP), and a prolonged exposure to high Pi caused calcium deposition. High Pi induced Sox9 upregulation through PKD and Akt activation. Knockdown of Sox9 essentially abolished the effect of high Pi on the osteogenic responses. Lower Klotho levels were observed in calcified aortic valve tissues. Interestingly, high Pi decreased Klotho levels in AVICs from normal valves, and treatment with recombinant Klotho markedly reduced the effect of high Pi on the levels of Sox9, Runx2, and ALP and suppressed calcium deposition. We conclude that high Pi induces human AVIC osteogenic responses through Sox9. Human AVICs express Klotho, and its levels in AVICs are modulated by high Pi and valvular calcification. Importantly, Klotho suppresses the pro-osteogenic effect of high Pi on human AVICs. These novel findings indicate that modulation of Klotho may have therapeutic potential for mitigation of valvular calcification associated with CKD. KEY MESSAGES CAVD associated with chronic kidney disease is a significant clinical problem. High phosphate upregulates Sox9 through AKT and PKD in human AVICs. Calcified human aortic valves have lower levels of Klotho. Klotho suppresses Sox9 upregulation and intranuclear translocation. Klotho inhibits high phosphate-induced osteogenic activity in human AVICs.
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Shen W, Zhou J, Wang C, Xu G, Wu Y, Hu Z. High mobility group box 1 induces calcification of aortic valve interstitial cells via toll-like receptor 4. Mol Med Rep 2017; 15:2530-2536. [PMID: 28260034 PMCID: PMC5428883 DOI: 10.3892/mmr.2017.6287] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2015] [Accepted: 11/15/2016] [Indexed: 01/10/2023] Open
Abstract
Chronic inflammation and the calcification of aortic valve interstitial cells (AVICs) are the primary etiologies of calcific aortic valve disease (CAVD). However, the underlying mechanism remains to be elucidated. The present study investigated the importance of high mobility group box 1 (HMGB1) via toll-like receptor 4 (TLR4) for the regulation of inflammation and calcification in AVICs. It was determined that the expression levels of HMGB1 and TLR4 were increased in the calcific region of aortic valves with CAVD. In cultured primary AVICs from wild-type mice, HMGB1 treatment demonstrated a dose-dependent increase in mineralization levels and osteogenic gene expression. These effects were significantly reduced in AVICs obtained from TLR4 knockout mice (TLR4−/−). In addition, calcification was inhibited by TLR4-specific antibodies in primary AVICs. HMGB1 induced the activation of p38 and nuclear factor-κB (NF-κB) in TLR4−/− primary AVICs, and inhibited p38 and NF-κB in wild-type AVICs treated with TLR4-specific antibodies. The present study demonstrated that TLR4 may function as an essential mediator of HMGB1-induced calcification and in the activation of p38 and NF-κB.
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Affiliation(s)
- Wenjun Shen
- Ningbo Medical Treatment Center, Lihuili Hospital, Ningbo, Zhejiang 310041, P.R. China
| | - Jianqing Zhou
- Ningbo Medical Treatment Center, Lihuili Hospital, Ningbo, Zhejiang 310041, P.R. China
| | - Chaoyang Wang
- Ningbo Medical Treatment Center, Lihuili Hospital, Ningbo, Zhejiang 310041, P.R. China
| | - Guangze Xu
- Ningbo Medical Treatment Center, Lihuili Hospital, Ningbo, Zhejiang 310041, P.R. China
| | - Ying Wu
- Ningbo Medical Treatment Center, Lihuili Hospital, Ningbo, Zhejiang 310041, P.R. China
| | - Zhaohui Hu
- Department of Cardiovascular Disease, The Affiliated Tongji Hospital, Tongji University, Shanghai 210062, P.R. China
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Sun M, Chang Q, Xin M, Wang Q, Li H, Qian J. Endogenous bone morphogenetic protein 2 plays a role in vascular smooth muscle cell calcification induced by interleukin 6 in vitro. Int J Immunopathol Pharmacol 2017; 30:227-237. [PMID: 28134597 PMCID: PMC5815263 DOI: 10.1177/0394632016689571] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Systemic inflammation is involved in vascular calcification and cardiovascular disease which is the leading cause of mortality in rheumatoid arthritis (RA). A high level of serum interleukin (IL)-6 plays a key role in local and systemic inflammation in RA. However, the underlying mechanisms remain unclear. We established a human umbilical artery smooth muscle cell (HUASMC) culturing method to investigate the possible role of IL-6 on vascular calcification. HUASMCs were obtained from umbilical arteries of healthy neonates. To detect calcification effects, HUASMCs were treated with (experimental group) or without (control group) recombinant human (rh) IL-6. The calcium deposition stain and calcium concentrations were measured, as well as the mRNA and protein levels of the regulating factor of osteogenic differentiation-bone morphogenetic protein (BMP) 2 and those calcifying related molecules including bone-specific alkaline phosphatase (BAP), osteoprotegerin (OPG), and osteopontin (OPN). Our study showed that rhIL-6 induced calcification of HUASMCs in a time- and dose-dependent manner, and upregulated expressions of BMP2, BAP, OPG, and OPN of HUASMCs. We then used the anti-BMP2 siRNA to knockdown the expression of endogenous BMP2 to confirm its role. HUASMCs were transfected with negative siRNA (control group) or the valid anti-BMP2 siRNA (experimental group) before they were treated with rhIL-6. Cells transfected with negative siRNA without IL-6 stimulating served as the blank group. The results showed that anti-BMP2 siRNA markedly decreased expressions of BMP2, BAP, OPG, and OPN, and also partly reduced the calcification of HUASMCs induced by rhIL-6. Collectively, according to our study, rhIL-6 could induce the extracellular calcification and osteogenic differentiation of human artery smooth muscle cells through upregulating endogenous BMP2 in vitro. This may be one of the underlying mechanisms of the overwhelming vascular calcification in RA.
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Affiliation(s)
- Mingshu Sun
- 1 Department of Rheumatology and Clinical Immunology, the Affiliated Hospital of Qingdao University, Qingdao, China
| | - Qing Chang
- 2 Department of Cardiac surgery, the Affiliated Hospital of Qingdao University, Qingdao, China
| | - Miaomiao Xin
- 1 Department of Rheumatology and Clinical Immunology, the Affiliated Hospital of Qingdao University, Qingdao, China
| | - Qian Wang
- 1 Department of Rheumatology and Clinical Immunology, the Affiliated Hospital of Qingdao University, Qingdao, China
| | - Hua Li
- 1 Department of Rheumatology and Clinical Immunology, the Affiliated Hospital of Qingdao University, Qingdao, China
| | - Jiaqi Qian
- 3 Department of Nephrology, Renji Hospital, Shanghai Jiaotong University Medical College, Shanghai, China
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Afrin R, Arumugam S, Rahman A, Wahed MII, Karuppagounder V, Harima M, Suzuki H, Miyashita S, Suzuki K, Yoneyama H, Ueno K, Watanabe K. Curcumin ameliorates liver damage and progression of NASH in NASH-HCC mouse model possibly by modulating HMGB1-NF-κB translocation. Int Immunopharmacol 2017; 44:174-182. [PMID: 28110063 DOI: 10.1016/j.intimp.2017.01.016] [Citation(s) in RCA: 74] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2016] [Revised: 12/22/2016] [Accepted: 01/10/2017] [Indexed: 12/21/2022]
Abstract
Curcumin, a phenolic compound, has a wide spectrum of therapeutic effects such as antitumor, anti-inflammatory, anti-cancer and so on. The study aimed to investigate the underlying mechanisms of curcumin to protect liver damage and progression of non-alcoholic steatohepatitis (NASH) in a novel NASH-hepatocellular carcinoma (HCC) mouse model. To induce this model neonatal C57BL/6J male mice were exposed to low-dose streptozotocin and were fed a high-fat diet (HFD) from the age of 4weeks to 14weeks. Curcumin was given at 100mg/kg dose daily by oral gavage started at the age of 10weeks and continued until 14weeks along with HFD feeding. We found that curcumin improved the histopathological changes of the NASH liver via reducing the level of steatosis, fibrosis associated with decreasing serum aminotransferases. In addition, curcumin treatment markedly reduced the hepatic protein expression of oxidative stress, pro-inflammatory cytokines, and chemokines including interferon (IFN) γ, interleukin-1β and IFNγ-inducible protein 10, in NASH mice. Furthermore, curcumin treatment significantly reduced the cytoplasmic translocation of high mobility group box 1 (HMGB1) and the protein expression of toll like receptor 4. Nuclear translocation of nuclear factor kappa B (NF-κB) was also dramatically attenuated by the curcumin in NASH liver. Curcumin treatment effectively reduced the progression of NASH to HCC by suppressing the protein expression of glypican-3, vascular endothelial growth factor, and prothrombin in the NASH liver. Our data suggest that curcumin reduces the progression of NASH and liver damage, which may act via inhibiting HMGB1-NF-κB translocation.
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Affiliation(s)
- Rejina Afrin
- Department of Clinical Pharmacology, Faculty of Pharmaceutical Sciences, Niigata University of Pharmacy and Applied Life Sciences, Niigata 956-8603, Japan
| | - Somasundaram Arumugam
- Department of Clinical Pharmacology, Faculty of Pharmaceutical Sciences, Niigata University of Pharmacy and Applied Life Sciences, Niigata 956-8603, Japan
| | - Azizur Rahman
- Department of Immunology and Medical Zoology, Faculty of Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata City 951-8510, Japan
| | - Mir Imam Ibne Wahed
- Department of Clinical Pharmacology, Faculty of Pharmaceutical Sciences, Niigata University of Pharmacy and Applied Life Sciences, Niigata 956-8603, Japan; Department of Pharmacy, University of Rajshahi, Rajshahi 6205, Bangladesh
| | - Vengadeshprabhu Karuppagounder
- Department of Clinical Pharmacology, Faculty of Pharmaceutical Sciences, Niigata University of Pharmacy and Applied Life Sciences, Niigata 956-8603, Japan
| | - Meilei Harima
- Department of Clinical Pharmacology, Faculty of Pharmaceutical Sciences, Niigata University of Pharmacy and Applied Life Sciences, Niigata 956-8603, Japan
| | - Hiroshi Suzuki
- Department of Clinical Pharmacology, Faculty of Pharmaceutical Sciences, Niigata University of Pharmacy and Applied Life Sciences, Niigata 956-8603, Japan
| | - Shizuka Miyashita
- Department of Clinical Pharmacology, Faculty of Pharmaceutical Sciences, Niigata University of Pharmacy and Applied Life Sciences, Niigata 956-8603, Japan
| | - Kenji Suzuki
- Department of Clinical Engineering and Medical Technology, Niigata University of Health and Welfare, Niigata 950-3198, Japan
| | | | - Kazuyuki Ueno
- Department of Pharmaceutical Sciences, Niigata University of Pharmacy and Applied Life Sciences, Niigata 956-8603, Japan
| | - Kenichi Watanabe
- Department of Clinical Pharmacology, Faculty of Pharmaceutical Sciences, Niigata University of Pharmacy and Applied Life Sciences, Niigata 956-8603, Japan.
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Szasz T, Wenceslau CF, Burgess B, Nunes KP, Webb RC. Toll-Like Receptor 4 Activation Contributes to Diabetic Bladder Dysfunction in a Murine Model of Type 1 Diabetes. Diabetes 2016; 65:3754-3764. [PMID: 27650857 PMCID: PMC5127246 DOI: 10.2337/db16-0480] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/15/2016] [Accepted: 09/14/2016] [Indexed: 12/16/2022]
Abstract
Diabetic bladder dysfunction (DBD) is a common urological complication of diabetes. Innate immune system activation via Toll-like receptor 4 (TLR4) leads to inflammation and oxidative stress and was implicated in diabetes pathophysiology. We hypothesized that bladder hypertrophy and hypercontractility in DBD is mediated by TLR4 activation. Wild-type (WT) and TLR4 knockout (TLR4KO) mice were made diabetic by streptozotocin (STZ) treatment, and bladder contractile function and TLR4 pathway expression were evaluated. Immunohistochemistry confirmed the expression of TLR4 in human and mouse bladder. Recombinant high-mobility group box protein 1 (HMGB1) increased bladder TLR4 and MyD88 expression and enhanced contractile response to electrical field stimulation. Bladder expression of TLR4 and MyD88 and serum expression of HMGB1 were increased in STZ compared with control mice. Carbachol (CCh)-mediated contraction was increased in bladders from STZ mice, and TLR4 inhibitor CLI-095 attenuated this increase. Induction of diabetes by STZ in WT mice increased bladder weight and contractile responses to CCh and to electrical field stimulation. TLR4KO mice were not protected from STZ-induced diabetes; however, despite levels of hyperglycemia similar to those of WT STZ mice, TLR4KO STZ mice were protected from diabetes-induced bladder hypertrophy and hypercontractility. These data suggest that TLR4 activation during diabetes mediates DBD-associated bladder hypertrophy and hypercontractility.
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Affiliation(s)
- Theodora Szasz
- Department of Physiology, Augusta University, Augusta, GA
| | | | - Beth Burgess
- Department of Physiology, Augusta University, Augusta, GA
| | - Kenia P Nunes
- Department of Biological Sciences, Florida Institute of Technology, Melbourne, FL
| | - R Clinton Webb
- Department of Physiology, Augusta University, Augusta, GA
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Illien-Jünger S, Torre O, Kindschuh W, Chen X, Laudier D, Iatridis J. AGEs induce ectopic endochondral ossification in intervertebral discs. Eur Cell Mater 2016; 32:257-270. [PMID: 27858401 PMCID: PMC5482230 DOI: 10.22203/ecm.v032a17] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Abstract
Ectopic calcifications in intervertebral discs (IVDs) are known characteristics of IVD degeneration that are not commonly reported but may be implicated in structural failure and dysfunctional IVD cell metabolic responses. This study investigated the novel hypothesis that ectopic calcifications in the IVD are associated with advanced glycation end products (AGEs) via hypertrophy and osteogenic differentiation. Histological analyses of human IVDs from several degeneration stages revealed areas of ectopic calcification within the nucleus pulposus and at the cartilage endplate. These ectopic calcifications were associated with cells positive for the AGE methylglyoxal-hydroimidazolone-1 (MG-H1). MG-H1 was also co-localised with Collagen 10 (COL10) and Osteopontin (OPN) suggesting osteogenic differentiation. Bovine nucleus pulposus and cartilaginous endplate cells in cell culture demonstrated that 200 mg/mL AGEs in low-glucose media increased ectopic calcifications after 4 d in culture and significantly increased COL10 and OPN expression. The receptor for AGE (RAGE) was involved in this differentiation process since its inhibition reduced COL10 and OPN expression. We conclude that AGE accumulation is associated with endochondral ossification in IVDs and likely acts via the AGE/RAGE axis to induce hypertrophy and osteogenic differentiation in IVD cells. We postulate that this ectopic calcification may play an important role in accelerated IVD degeneration including the initiation of structural defects. Since orally administered AGE and RAGE inhibitors are available, future investigations on AGE/RAGE and endochondral ossification may be a promising direction for developing non-invasive treatment against progression of IVD degeneration.
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Affiliation(s)
- S. Illien-Jünger
- Address for correspondence: Svenja Illien-Jünger Leni and Peter W. May Department of Orthopaedics, Box 1188, Icahn School of Medicine at Mount Sinai, One Gustave L. Levy Place, NY 10029, New York, Telephone number: +1 212 241 1513,
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High Mobility Group Box-1: A Missing Link between Diabetes and Its Complications. Mediators Inflamm 2016; 2016:3896147. [PMID: 27847406 PMCID: PMC5099456 DOI: 10.1155/2016/3896147] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2016] [Accepted: 10/03/2016] [Indexed: 12/13/2022] Open
Abstract
High mobility group box-1 (HMGB-1), a damage-associated molecular pattern, can be actively or passively released from various cells under different conditions and plays a pivotal role in the pathogenesis of inflammation and angiogenesis-dependent diseases. More and more evidence suggests that inflammation, in addition to its role in progression of diabetes, also promotes initiation and development of diabetic complications. In this review, we focus on the role of HMGB-1 in diabetes-related complications and the therapeutic strategies targeting HMGB-1 in diabetic complications.
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TWEAK favors phosphate-induced calcification of vascular smooth muscle cells through canonical and non-canonical activation of NFκB. Cell Death Dis 2016; 7:e2305. [PMID: 27441657 PMCID: PMC4973358 DOI: 10.1038/cddis.2016.220] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2016] [Revised: 06/10/2016] [Accepted: 06/14/2016] [Indexed: 12/24/2022]
Abstract
Vascular calcification (VC) is associated with increased cardiovascular mortality in aging, chronic kidney disease (CKD), type 2 diabetes mellitus (T2DM) and atherosclerosis. TNF-like weak inducer of apoptosis (TWEAK) recently emerged as a new biomarker for the diagnosis and prognosis of cardiovascular diseases. TWEAK binding to its functional receptor Fn14 was reported to promote several steps of atherosclerotic plaque progression. However, no information is currently available on the role of TWEAK/Fn14 on the development of medial calcification, which is highly prevalent in aging, CKD and T2DM. This study explored the involvement of TWEAK in human vascular smooth muscle cells (h-VSMCs) calcification in vitro. We report that TWEAK binding to Fn14 promotes inorganic phosphate-induced h-VSMCs calcification, favors h-VSMCs osteogenic transition, decreasing acta2 and myh11 and increasing bmp2 mRNA and tissue non-specific alkaline phosphatase (TNAP), and increases MMP9 activity. Blockade of the canonical NFκB pathway reduced by 80% TWEAK pro-calcific properties and decreased osteogenic transition, TNAP and MMP9 activity. Blockade of non-canonical NFκB signaling by a siRNA targeting RelB reduced by 20% TWEAK pro-calcific effects and decreased TWEAK-induced loss of h-VSMCs contractile phenotype and MMP9 activity, without modulating bmp2 mRNA or TNAP activity. Inhibition of ERK1/2 activation by a MAPK kinase inhibitor did not influence TWEAK pro-calcific properties. Our results suggest that TWEAK/Fn14 directly favors inorganic phosphate-induced h-VSMCs calcification by activation of both canonical and non-canonical NFκB pathways. Given the availability of neutralizing anti-TWEAK strategies, our study sheds light on the TWEAK/Fn14 axis as a novel therapeutic target in the prevention of VC.
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Chen Q, Bei JJ, Liu C, Feng SB, Zhao WB, Zhou Z, Yu ZP, Du XJ, Hu HY. HMGB1 Induces Secretion of Matrix Vesicles by Macrophages to Enhance Ectopic Mineralization. PLoS One 2016; 11:e0156686. [PMID: 27243975 PMCID: PMC4887028 DOI: 10.1371/journal.pone.0156686] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2016] [Accepted: 05/18/2016] [Indexed: 12/14/2022] Open
Abstract
Numerous clinical conditions have been linked to ectopic mineralization (EM). This process of pathological biomineralization is complex and not fully elucidated, but thought to be started within matrix vesicles (MVs). We hypothesized that high mobility group box 1 (HMGB1), a cytokine associated with biomineralizing process under physiological and pathological conditions, induces EM via promoting MVs secretion from macrophages. In this study, we found that HMGB1 significantly promoted secretion of MVs from macrophages and subsequently led to mineral deposition in elevated Ca/Pi medium in vitro. Transmission electron microscopy of calcifying MVs showed formation of hydroxyapatite crystals in the vesicle interior. Subcutaneous injection into mice with MVs derived from HMGB1-treated cells showed a greater potential to initiate regional mineralization. Mechanistic experiments revealed that HMGB1 activated neutral sphingomyelinase2 (nSMase2) that involved the receptor for advanced glycation end products (RAGE) and p38 MAPK (upstream of nSMase2). Inhibition of nSMase2 with GW4869 or p38 MAPK with SB-239063 prevented MVs secretion and mineral deposition. Collectively, HMGB1 induces MVs secretion from macrophages at least in part, via the RAGE/p38 MAPK/nSMase2 signaling pathway. Our findings thus reveal a novel mechanism by which HMGB1 induces ectopic mineralization.
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Affiliation(s)
- Qiang Chen
- Department of Cardiology, Southwest Hospital, Third Military Medical University, Chongqing, China
- Department of Out-patient, Naval University of Engineering, Wuhan, China
| | - Jun-Jie Bei
- Department of Cardiology, Southwest Hospital, Third Military Medical University, Chongqing, China
| | - Chuan Liu
- Department of Occupational Health, Faculty of Preventive Medicine, Third Military Medical University, Chongqing, China
| | - Shi-Bin Feng
- Department of Cardiology, Southwest Hospital, Third Military Medical University, Chongqing, China
| | - Wei-Bo Zhao
- Department of Cardiology, Southwest Hospital, Third Military Medical University, Chongqing, China
| | - Zhou Zhou
- Department of Occupational Health, Faculty of Preventive Medicine, Third Military Medical University, Chongqing, China
| | - Zheng-Ping Yu
- Department of Occupational Health, Faculty of Preventive Medicine, Third Military Medical University, Chongqing, China
| | - Xiao-Jun Du
- Experimental Cardiology, Baker IDI Heart and Diabetes Institute, and Central Clinical School, Monash University, Melbourne, Australia
| | - Hou-Yuan Hu
- Department of Cardiology, Southwest Hospital, Third Military Medical University, Chongqing, China
- * E-mail:
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Thinschmidt JS, Colon-Perez LM, Febo M, Caballero S, King MA, White FA, Grant MB. Depressed basal hypothalamic neuronal activity in type-1 diabetic mice is correlated with proinflammatory secretion of HMBG1. Neurosci Lett 2016; 615:21-7. [PMID: 26777426 PMCID: PMC5399679 DOI: 10.1016/j.neulet.2016.01.014] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2015] [Revised: 01/07/2016] [Accepted: 01/11/2016] [Indexed: 02/07/2023]
Abstract
We recently found indicators of hypothalamic inflammation and neurodegeneration linked to the loss of neuroprotective factors including insulin-like growth factor (IGF-1) and IGF binding protein-2 (IGFBP-3) in mice made diabetic using streptozotocin (STZ). In the current work, a genetic model of type-1 diabetes (Ins2(Akita) mouse) was used to evaluate changes in neuronal activity and concomitant changes in the proinflammatory mediator high-mobility group box-1 (HMBG1). We found basal hypothalamic neuronal activity as indicated by manganese-enhanced magnetic resonance imaging (MEMRI) was significantly decreased in 8 months old, but not 2 months old Ins2(Akita) diabetic mice compared to controls. In tissue from the same animals we evaluated the expression of HMBG1 using immunohistochemistry and confocal microscopy. We found decreased HMBG1 nuclear localization in the paraventricular nucleus of the hypothalamus (PVN) in 8 months old, but not 2 months old diabetic animals indicating nuclear release of the protein consistent with an inflammatory state. Adjacent thalamic regions showed little change in HMBG1 nuclear localization and neuronal activity as a result of diabetes. This work extends our previous findings demonstrating changes consistent with hypothalamic neuroinflammation in STZ treated animals, and shows active inflammatory processes are correlated with changes in basal hypothalamic neuronal activity in Ins2(Akita) mice.
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Affiliation(s)
- Jeffrey S Thinschmidt
- Department of Pharmacology and Therapeutics, University of Florida, Gainesville, FL, USA
| | | | - Marcelo Febo
- Department of Psychiatry, University of Florida, Gainesville, FL, USA
| | - Sergio Caballero
- Department of Pharmacology and Therapeutics, University of Florida, Gainesville, FL, USA
| | - Michael A King
- Department of Pharmacology and Therapeutics, University of Florida, Gainesville, FL, USA
| | - Fletcher A White
- Department of Anesthesia, Indiana University School of Medicine, IN, USA
| | - Maria B Grant
- Eugene and Marilyn Glick Eye Institute, Department of Ophthalmology, Indiana University School of Medicine, IN, USA.
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Diabetes-Induced Oxidative Stress in Endothelial Progenitor Cells May Be Sustained by a Positive Feedback Loop Involving High Mobility Group Box-1. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2015; 2016:1943918. [PMID: 26798412 PMCID: PMC4698939 DOI: 10.1155/2016/1943918] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/20/2015] [Revised: 09/24/2015] [Accepted: 09/28/2015] [Indexed: 12/21/2022]
Abstract
Oxidative stress is considered to be a critical factor in diabetes-induced endothelial progenitor cell (EPC) dysfunction, although the underlying mechanisms are not fully understood. In this study, we investigated the role of high mobility group box-1 (HMGB-1) in diabetes-induced oxidative stress. HMGB-1 was upregulated in both serum and bone marrow-derived monocytes from diabetic mice compared with control mice. In vitro, advanced glycation end productions (AGEs) induced, expression of HMGB-1 in EPCs and in cell culture supernatants in a dose-dependent manner. However, inhibition of oxidative stress with N-acetylcysteine (NAC) partially inhibited the induction of HMGB-1 induced by AGEs. Furthermore, p66shc expression in EPCs induced by AGEs was abrogated by incubation with glycyrrhizin (Gly), while increased superoxide dismutase (SOD) activity in cell culture supernatants was observed in the Gly treated group. Thus, HMGB-1 may play an important role in diabetes-induced oxidative stress in EPCs via a positive feedback loop involving the AGE/reactive oxygen species/HMGB-1 pathway.
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Wang B, Li F, Zhang C, Wei G, Liao P, Dong N. High-mobility group box-1 protein induces osteogenic phenotype changes in aortic valve interstitial cells. J Thorac Cardiovasc Surg 2015; 151:255-62. [PMID: 26515875 DOI: 10.1016/j.jtcvs.2015.09.077] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/21/2015] [Revised: 09/14/2015] [Accepted: 09/14/2015] [Indexed: 11/26/2022]
Abstract
OBJECTIVES Calcific aortic valve (AV) disease is known to be an inflammation-related process. High-mobility group box-1 (HMGB1) protein and Toll-like receptor 4 (TLR4) have been reported to participate in several inflammatory diseases. The purpose of the present study was to determine whether the HMGB1-TLR4 axis is involved in calcific AV disease, and to evaluate the effect of HMGB1, and its potential mechanisms, on the pro-osteogenic phenotype change of valvular interstitial cells (VICs). METHODS Expression of HMGB1 and TLR4 in human calcific AVs was evaluated using immunohistochemical staining and immunoblotting. Cultured VICs were used as an in vitro model. The VICs were stimulated with HMGB1 for analysis, with versus without TLR4 small interfering ribonucleic acid (siRNA), c-Jun N-terminal kinase mitogen-activated protein kinase (JNK MAPK), and nuclear factor kappa-B (NF-κB) inhibitors. RESULTS Enhanced accumulation of HMGB1 and TLR4 was observed in calcific valves. Moreover, we found that HMGB1 induced high levels of pro-inflammatory cytokine production and promoted the osteoblastic differentiation and calcification of VICs. In addition, HMGB1 induced phosphorylation of JNK MAPK and NF-κB. However, these effects were markedly suppressed by siRNA silencing of TLR4. In addition, blockade of JNK MAPK and NF-κB phosphorylation prohibited HMGB1-induced production of pro-osteogenic factors, and mineralization of VICs. CONCLUSIONS The HMGB1 protein may promote osteoblastic differentiation and calcification of VICs, through the TLR4-JNK-NF-κB signaling pathway.
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Affiliation(s)
- Bo Wang
- Department of Cardiovascular Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China
| | - Fei Li
- Department of Cardiovascular Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China
| | - Chao Zhang
- Department of Cardiovascular Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China
| | - Guangxia Wei
- Department of Cardiothoracic Surgery, Huangshi Central Hospital, Huangshi, China
| | - Pingping Liao
- Department of Gerontology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China
| | - Nianguo Dong
- Department of Cardiovascular Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China.
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Hénaut L, Sanchez-Nino MD, Aldamiz-Echevarría Castillo G, Sanz AB, Ortiz A. Targeting local vascular and systemic consequences of inflammation on vascular and cardiac valve calcification. Expert Opin Ther Targets 2015; 20:89-105. [PMID: 26788590 DOI: 10.1517/14728222.2015.1081685] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
INTRODUCTION Cardiac valve calcification and vascular calcification (VC) are associated with cardiovascular mortality in the general population and in patients with chronic kidney disease (CKD). CKD, diabetes mellitus, and atherosclerosis are among the causes of systemic inflammation that are associated with VC. AREAS COVERED This review collates clinical and experimental evidence that inflammation accelerates VC progression. Specifically, we review the actions of key pro-inflammatory cytokines and inflammation-related transcription factors on VC, and the role played by senescence. Inflammatory cytokines, such as the TNF superfamily and IL-6 superfamily, and inflammation-related transcription factor NF-κB promote calcification in cultured vascular smooth muscle cells, valvular interstitial cells, or experimental animal models through direct effects, but also indirectly by decreasing circulating Fetuin A or Klotho levels. EXPERT OPINION Experimental evidence suggests a causal link between inflammation and VC that would change the clinical approach to prevention and treatment of VC. However, the molecular basis remains unclear and little is known about VC in humans treated with drugs targeting inflammatory cytokines. The effect of biologicals targeting TNF-α, RANKL, IL-6, and other inflammatory mediators on VC, in addition to the impact of dietary phosphate in patients with chronic systemic inflammation, requires study.
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Affiliation(s)
- Lucie Hénaut
- a 1 Universidad Autónoma de Madrid, School of Medicine, Nephrology, IIS-Fundación Jiménez Díaz , Madrid, Spain
| | - Maria Dolores Sanchez-Nino
- b 2Universidad Autónoma de Madrid, School of Medicine, IIS-Fundación Jiménez Díaz, Madrid, Spain.,c 3 REDINREN , Madrid, Spain
| | | | - Ana B Sanz
- b 2Universidad Autónoma de Madrid, School of Medicine, IIS-Fundación Jiménez Díaz, Madrid, Spain.,c 3 REDINREN , Madrid, Spain
| | - Alberto Ortiz
- c 3 REDINREN , Madrid, Spain.,e 5 Chief of nephrology, Universidad Autónoma de Madrid, School of Medicine, IIS-Fundación Jiménez Díaz , Madrid, Spain .,f 6 Fundación Renal Iñigo Alvarez de Toledo-IRSIN , Madrid, Spain
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Geng Y, Ma Q, Liu YN, Peng N, Yuan FF, Li XG, Li M, Wu YS, Li BL, Song WB, Zhu W, Xu WW, Fan J, Su L. Heatstroke induces liver injury via IL-1β and HMGB1-induced pyroptosis. J Hepatol 2015; 63:622-33. [PMID: 25931416 DOI: 10.1016/j.jhep.2015.04.010] [Citation(s) in RCA: 126] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/30/2014] [Revised: 03/28/2015] [Accepted: 04/02/2015] [Indexed: 01/06/2023]
Abstract
BACKGROUND & AIMS Liver injury is a common complication of heat stroke (HS), and often constitutes a direct cause for patient death. The cellular and molecular mechanism underlying HS-induced liver injury remains unclear. Recent evidence indicates that inflammasome plays an important role in mediating sterile inflammation triggered by tissue damage. Using a rat HS model, we identified a novel mechanism by which inflammasome-dependent interleukin-1β (IL-1β) activation and hepatocyte pyroptosis mediate HS-induced liver injury. METHODS To induce HS, rats were subjected to heat exposure. Inhibition of inflammasomes was achieved by RNA silencing and pharmacologic inhibitor prior to heat exposure. Inflammasome assembly, caspase-1 activation, histological changes, as well as serum levels of liver enzymes were measured. RESULTS We demonstrated that the onset of HS activated inflammasome in the liver as evidenced by increased capase-1 activity and the association of inflammasome components NOD-like receptor family pyrin domain containing 3 (Nlrp3) and apoptosis speck-like protein containing a caspase-recruitment domain (ASC); and the activated inflammasome, in turn, induced IL-1β activation and hepatocyte pyroptosis, and subsequent augmented liver injury. HS-induced hepatocyte inflammasome activation seems to be high-mobility group box 1 (HMGB1) dependent. Inhibition of Nlrp3, caspase-1, or HMGB1 prevented HS-induced liver inflammation and ameliorated liver injury. CONCLUSIONS These findings demonstrate an important role of HMGB1 in mediating inflammasome activation in the development of liver injury following HS, and suggest that targeting inflammasome may represent a novel therapeutic strategy to limit cell death and prevent liver failure after HS.
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Affiliation(s)
- Yan Geng
- Department of Gastroenterology, 303 Hospital of People's Liberation Army, Nanning 530021, PR China; Department of Intensive Care Unit, General Hospital of Guangzhou Military Command, Guangzhou 510010, PR China.
| | - Qiang Ma
- State Key Laboratory of Organ Failure Research, Institute of Antibody Engineering, Southern Medical University, Guangzhou 510515, PR China.
| | - Ya-Nan Liu
- Department of Graduate School, Southern Medical University, Guangzhou 510515, PR China
| | - Na Peng
- Department of Graduate School, Southern Medical University, Guangzhou 510515, PR China; Department of Intensive Care Unit, General Hospital of Guangzhou Military Command, Guangzhou 510010, PR China
| | - Fang-Fang Yuan
- Department of Graduate School, Southern Medical University, Guangzhou 510515, PR China; Department of Surgery, University of Pittsburgh School of Medicine, Pittsburgh, PA 15213, USA
| | - Xing-Gui Li
- Department of Neurology, The Fifth People's Hospital of Chongqing, Chongqing 400062, PR China; Department of Intensive Care Unit, General Hospital of Guangzhou Military Command, Guangzhou 510010, PR China
| | - Ming Li
- State Key Laboratory of Organ Failure Research, Institute of Antibody Engineering, Southern Medical University, Guangzhou 510515, PR China
| | - Ying-Song Wu
- State Key Laboratory of Organ Failure Research, Institute of Antibody Engineering, Southern Medical University, Guangzhou 510515, PR China
| | - Bing-ling Li
- Department of Intensive Care Unit, General Hospital of Guangzhou Military Command, Guangzhou 510010, PR China
| | - Wei-bing Song
- Department of Intensive Care Unit, General Hospital of Guangzhou Military Command, Guangzhou 510010, PR China
| | - Wei Zhu
- Department of Toxicology, Guangzhou Center for Disease Control and Prevention, Guangzhou 510515, PR China
| | - Wei-Wen Xu
- State Key Laboratory of Organ Failure Research, Institute of Antibody Engineering, Southern Medical University, Guangzhou 510515, PR China
| | - Jie Fan
- Department of Surgery, University of Pittsburgh School of Medicine, Pittsburgh, PA 15213, USA.
| | - Lei Su
- Department of Intensive Care Unit, General Hospital of Guangzhou Military Command, Guangzhou 510010, PR China.
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Stallmann-Jorgensen I, Ogbi S, Szasz T, Webb RC. A Toll-Like Receptor 1/2 Agonist Augments Contractility in Rat Corpus Cavernosum. J Sex Med 2015; 12:1722-31. [PMID: 26234560 DOI: 10.1111/jsm.12960] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
INTRODUCTION Activation of the innate immune Toll-like receptor 2 (TLR2) initiates inflammation and has been implicated in vascular dysfunction. Increased contraction and decreased relaxation responses in the penile vasculature lead to erectile dysfunction, a condition associated with inflammation. However, whether TLR2 activation plays a role in penile vascular function has not been established. AIM We hypothesized that activation of the TLR 1/2 heterodimer (TLR1/2) augments contractile and impairs relaxation responses of corpus cavernosum and that these perturbations of vascular function are mediated by low nitric oxide (NO) availability and enhanced activity of the RhoA/Rho-kinase pathway. METHODS Contraction and relaxation responses were measured in rat cavernosal strips using a myograph after incubation with a TLR1/2-activating ligand Pam3 CSK4 (Pam3), the TLR1/2 inhibitor CuCPT 22 (CuCPT), and inhibitors of NO synthase (LNAME) and Rho-kinase (Y27632). TLR2 protein expression was assessed by immunohistochemistry. MAIN OUTCOME MEASURES Cumulative concentration response curves, sensitivity (pEC50), and maximal response (Emax ) of cavernosal strips to vasodilatory and vasocontractile agonists were compared between treatments. RESULTS Pam3-treated cavernosal strips exhibited greater pEC50 and higher Emax to phenylephrine (PE) than control tissues. Inhibition of NO synthase increased Emax to PE in Pam3-treated cavernosal strips. Pam3 treatment reduced relaxation to Y27632 compared with control tissues. Inhibition of TLR1/2 activation with CuCPT returned the augmented contraction to PE and the decreased relaxation to Y27632 of Pam3-treated cavernosal strips to control values. CONCLUSIONS The TLR1/2 heterodimer mediates augmented contraction and reduced relaxation in rat cavernosal strips. Thus, TLR1/2 activation antagonizes vascular responses crucial for normal erectile function and implicates immune activation in vasculogenic erectile dysfunction. Immune signaling via TLR2 may offer novel targets for treating inflammation-mediated vascular dysfunction in the penis.
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Affiliation(s)
| | - Safia Ogbi
- Department of Physiology, Georgia Regents University, Augusta, GA, USA
| | - Theodora Szasz
- Department of Physiology, Georgia Regents University, Augusta, GA, USA
| | - R Clinton Webb
- Department of Physiology, Georgia Regents University, Augusta, GA, USA
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Luo JY, Zhang Y, Wang L, Huang Y. Regulators and effectors of bone morphogenetic protein signalling in the cardiovascular system. J Physiol 2015; 593:2995-3011. [PMID: 25952563 DOI: 10.1113/jp270207] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2015] [Accepted: 04/27/2015] [Indexed: 12/22/2022] Open
Abstract
Bone morphogenetic proteins (BMPs) play key roles in the regulation of cell proliferation, differentiation and apoptosis in various tissues and organs, including the cardiovascular system. BMPs signal through both Smad-dependent and -independent cascades to exert a wide spectrum of biological activities. Cardiovascular disorders such as abnormal angiogenesis, atherosclerosis, pulmonary hypertension and cardiac hypertrophy have been linked to aberrant BMP signalling. To correct the dysregulated BMP signalling in cardiovascular pathogenesis, it is essential to get a better understanding of how the regulators and effectors of BMP signalling control cardiovascular function and how the dysregulated BMP signalling contributes to cardiovascular dysfunction. We hence highlight several key regulators of BMP signalling such as extracellular regulators of ligands, mechanical forces, microRNAs and small molecule drugs as well as typical BMP effectors like direct downstream target genes, mitogen-activated protein kinases, reactive oxygen species and microRNAs. The insights into these molecular processes will help target both the regulators and important effectors to reverse BMP-associated cardiovascular pathogenesis.
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Affiliation(s)
- Jiang-Yun Luo
- Shenzhen Research Institute, Institute of Vascular Medicine, and Li Ka Shing Institute of Health Sciences, Chinese University of Hong Kong, Hong Kong SAR, China
| | - Yang Zhang
- Shenzhen Research Institute, Institute of Vascular Medicine, and Li Ka Shing Institute of Health Sciences, Chinese University of Hong Kong, Hong Kong SAR, China.,Division of Genetics, Department of Medicine, Brigham and Women's Hospital, Harvard University, Boston, MA, USA
| | - Li Wang
- Shenzhen Research Institute, Institute of Vascular Medicine, and Li Ka Shing Institute of Health Sciences, Chinese University of Hong Kong, Hong Kong SAR, China
| | - Yu Huang
- Shenzhen Research Institute, Institute of Vascular Medicine, and Li Ka Shing Institute of Health Sciences, Chinese University of Hong Kong, Hong Kong SAR, China
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Kalbasi Anaraki P, Patecki M, Tkachuk S, Kiyan Y, Haller H, Dumler I. Urokinase receptor mediates osteoclastogenesis via M-CSF release from osteoblasts and the c-Fms/PI3K/Akt/NF-κB pathway in osteoclasts. J Bone Miner Res 2015; 30:379-88. [PMID: 25196912 DOI: 10.1002/jbmr.2350] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/26/2014] [Revised: 08/24/2014] [Accepted: 08/28/2014] [Indexed: 12/31/2022]
Abstract
Bone remodeling is a dynamic process based on a fine-tuned balance between formation and degradation of bone. Osteoblasts (OBLs) are responsible for bone formation and bone resorption is mediated by osteoclasts (OCLs). The mechanisms regulating the OBL-OCL balance are critical in health and disease; however, they are still far from being understood. We reported recently that the multifunctional urokinase receptor (uPAR) mediates osteogenic differentiation of mesenchymal stem cells (MSCs) to OBLs and vascular calcification in atherosclerosis. Here, we address the question of whether uPAR may also be engaged in regulation of osteoclastogenesis. We show that uPAR mediates this process in a dual fashion. Thus, uPAR affected OBL-OCL interplay. We observed that osteoclastogenesis was significantly impaired in co-culture of monocyte-derived OCLs and in OBLs derived from MSCs lacking uPAR. We show that expression and release, from OBLs, of macrophage colony-stimulating factor (M-CSF), which is indispensable for OCL differentiation, was inhibited by uPAR loss. We further found that uPAR, on the other hand, controlled formation, differentiation, and functional properties of macrophage-derived OCLs. Expression of osteoclastogenic markers, such as tartrate-resistant acid phosphatase (TRAP) and cathepsin K, was impaired in OCLs derived from uPAR-deficient macrophages. The requirement of uPAR for osteoclastogenesis was further confirmed by immunocytochemistry and in bone resorption assay. We provide evidence that the underlying signaling mechanisms involve uPAR association with the M-CSF binding receptor c-Fms followed by c-Fms phosphorylation and activation of the PI3K/Akt/NF-κB pathway in OCLs. We further show that uPAR uses this pathway to regulate a balance between OCL differentiation, apoptosis, and cell proliferation. Our study identified uPAR as an important and multifaceted regulator of OBL-OCL molecular interplay that may serve as an attractive target in bone disease and ectopic calcification.
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Li Y, Wu R, Zhao S, Cheng H, Ji P, Yu M, Tian Z. RAGE/NF-κB Pathway Mediates Lipopolysaccharide-Induced Inflammation in Alveolar Type I Epithelial Cells Isolated from Neonate Rats. Inflammation 2014; 37:1623-9. [DOI: 10.1007/s10753-014-9889-y] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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