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Ural C, Celik A, Ozbal S, Guneli E, Arslan S, Ergur BU, Cavdar C, Akdoğan G, Cavdar Z. The renoprotective effects of taurine against diabetic nephropathy via the p38 MAPK and TGF-β/Smad2/3 signaling pathways. Amino Acids 2023; 55:1665-1677. [PMID: 37805666 DOI: 10.1007/s00726-023-03342-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: 01/24/2023] [Accepted: 09/20/2023] [Indexed: 10/09/2023]
Abstract
Diabetic nephropathy (DN), a severe diabetes complication, causes kidney morphological and structural changes due to extracellular matrix accumulation. This accumulation is caused mainly by oxidative stress. Semi-essential amino acid derivative taurine has powerful antioxidant and antifibrotic effects. The aim of this study was to investigate the renoprotective effects of taurine through its possible roles in oxidative stress, extracellular matrix proteins, and the signaling pathways associated with the accumulation of extracellular matrix proteins in DN rats. 29 Wistar albino rats were randomly separated into control, taurine, diabetes, and diabetes + taurine groups. Diabetes animals were injected 45 mg/kg streptozosine. Taurine is given by adding to drinking water as 1% (w/v). Urine, serum, and kidney tissue were collected from rats for biochemical and histological analysis after 12 weeks. According to the studies, taurine significantly reduces the levels of malondialdehyde (MDA), total oxidant status (TOS), and protein expression of NADPH oxidase 4 (NOX4) that increase in diabetic kidney tissue. Also, decreased superoxide dismutase (SOD) activity levels significantly increased with taurine in diabetic rats. Moreover, increased mRNA and protein levels of fibronectin decreased with taurine. The matrix metalloproteinase (MMP)-2 and MMP-9 activities and their mRNA levels increased significantly, and this increase was significantly summed with taurine. There was a decrease in mRNA expression of Extracellular matrix metalloproteinase inducer (EMMPRIN). Taurine significantly increased this decrease. Diabetes increased mRNA expressions of transforming growth factor (TGF)-β and Smad2/3. Taurine significantly reduced this induction. TGF-β protein expression, p38, and Smad2/3 activations were also inhibited, but taurine was suppressed significantly. All these findings indicate that taurine may be an effective practical strategy to prevent renal diabetic injury.
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Affiliation(s)
- Cemre Ural
- Department of Molecular Medicine, Health Sciences Institute, Dokuz Eylul University, 35340, Izmir, Turkey
| | - Asli Celik
- Multidisciplinary Experimental Animal Laboratory, Faculty of Medicine, Dokuz Eylul University, Izmir, Turkey
| | - Seda Ozbal
- Department of Histology and Embryology, Faculty of Medicine, Dokuz Eylul University, Izmir, Turkey
| | - Ensari Guneli
- Multidisciplinary Experimental Animal Laboratory, Faculty of Medicine, Dokuz Eylul University, Izmir, Turkey
- Department of Laboratory Animal Science, Health Sciences Institute, Dokuz Eylul University, Izmir, Turkey
| | - Sevki Arslan
- Department of Biology, Faculty of Science, Pamukkale University, Denizli, Turkey
| | - Bekir Ugur Ergur
- Department of Histology and Embryology, University of Kyrenia, Kyrenia, Northern Cyprus
| | - Caner Cavdar
- Department of Nephrology, Faculty of Medicine, Dokuz Eylul University, Izmir, Turkey
| | - Gül Akdoğan
- Department of Medical Biochemistry, School of Medicine, Izmir University of Economics, Izmir, Turkey
| | - Zahide Cavdar
- Department of Molecular Medicine, Health Sciences Institute, Dokuz Eylul University, 35340, Izmir, Turkey.
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2
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Huang S, Wang W, Li L, Wang T, Zhao Y, Lin Y, Huang W, Wang Y, Huang Z. P2X7 Receptor Deficiency Ameliorates STZ-induced Cardiac Damage and Remodeling Through PKCβ and ERK. Front Cell Dev Biol 2021; 9:692028. [PMID: 34395424 PMCID: PMC8358615 DOI: 10.3389/fcell.2021.692028] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Accepted: 07/12/2021] [Indexed: 12/18/2022] Open
Abstract
Diabetic cardiomyopathy (DCM) is a complication of diabetes mellitus which result in cardiac remodeling and subsequent heart failure. However, the role of P2X7 receptor (P2X7R) in DCM has yet to be elucidated. The principal objective of this study was to investigate whether P2X7R participates in the pathogenesis of DCM. In this study, the C57BL/6 diabetic mouse model was treated with a P2X7R inhibitor (A438079). Cardiac dysfunction and remodeling were attenuated by the intraperitoneal injection of A438079 or P2X7R deficiency. In vitro, A438079 reduced high glucose (HG) induced cell damage in H9c2 cells and primary rat cardiomyocytes. Furthermore, HG/streptozotocin (STZ)-induced P2X7R activation mediated downstream protein kinase C-β (PKCβ) and extracellular regulated protein kinases (ERK) activation. This study provided evidence that P2X7R plays an important role in the pathogenesis of STZ-induced diabetic cardiac damage and remodeling through the PKCβ/ERK axis and suggested that P2X7R might be a potential target in the treatment of diabetic cardiomyopathy.
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Affiliation(s)
- Shanjun Huang
- The Key Laboratory of Cardiovascular Disease of Wenzhou, Department of Cardiology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China.,Department of Cardiology, The Fourth Affiliated Hospital, Zhejiang University School of Medicine, Yiwu, China
| | - Weiqi Wang
- The Key Laboratory of Cardiovascular Disease of Wenzhou, Department of Cardiology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Li Li
- Department of Anesthesiology, The Fourth Affiliated Hospital, Zhejiang University School of Medicine, Yiwu, China
| | - Ting Wang
- The Key Laboratory of Cardiovascular Disease of Wenzhou, Department of Cardiology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Yihan Zhao
- The Key Laboratory of Cardiovascular Disease of Wenzhou, Department of Cardiology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Ya Lin
- The Key Laboratory of Cardiovascular Disease of Wenzhou, Department of Cardiology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Weijian Huang
- The Key Laboratory of Cardiovascular Disease of Wenzhou, Department of Cardiology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Yonghua Wang
- Department of Physical Education, Wenzhou Medical University, Wenzhou, China
| | - Zhouqing Huang
- The Key Laboratory of Cardiovascular Disease of Wenzhou, Department of Cardiology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
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3
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Wang P, Hao X, Li X, Yan Y, Tian W, Xiao L, Wang Z, Dong J. Curcumin inhibits adverse psychological stress-induced proliferation and invasion of glioma cells via down-regulating the ERK/MAPK pathway. J Cell Mol Med 2021; 25:7190-7203. [PMID: 34169637 PMCID: PMC8335680 DOI: 10.1111/jcmm.16749] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2021] [Revised: 05/29/2021] [Accepted: 06/09/2021] [Indexed: 12/13/2022] Open
Abstract
Curcumin is a natural polyphenol extracted from the rhizome of Curcuma that has an important antitumour effect, but its effect on adverse psychological stress‐induced tumour proliferation and invasion has not been reported to date. Here, we found that curcumin not only inhibited the growth of xenografts in chronically stressed nude mice, but also decreased the expression of matrix metalloproteinase (MMP)‐2/9 and CD147 in tumour tissues. Exogenous norepinephrine (NE) was used to stimulate glioma cells to simulate the stress environment in vitro, and it was found that curcumin inhibited the NE‐induced proliferation and invasion of glioma cells in a dose‐dependent manner. Further research found that the effects of NE on glioma cells could lead to the activation of the mitogen‐activated protein kinase (MAPK) signalling pathway through β‐adrenergic receptor, while curcumin suppressed the level of extracellular signal–regulated kinase (ERK)1/2 phosphorylation. In addition, blocking ERK1/2 expression with U0126 resulted in the down‐regulated expression of CD147, which further led to the decreased expression of MMP‐2 and MMP‐9. Curcumin could also inhibit the expression of cyclin D1/CDK4/6 and anti‐apoptotic protein Bcl‐2/Bcl‐XL induced by NE, and induced cell cycle changes and increased apoptosis. Therefore, curcumin may be a potential candidate drug for preventing and treating the progression of glioma induced by adverse psychological stress.
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Affiliation(s)
- Ping Wang
- Department of Molecular Biology and Biochemistry, Weifang Medical University, Weifang, China
| | - Xinwei Hao
- Department of Molecular Biology and Biochemistry, Weifang Medical University, Weifang, China
| | - Xiaohan Li
- Department of Molecular Biology and Biochemistry, Weifang Medical University, Weifang, China
| | - Yizhi Yan
- Department of Molecular Biology and Biochemistry, Weifang Medical University, Weifang, China
| | - Wenxiu Tian
- Department of Molecular Biology and Biochemistry, Weifang Medical University, Weifang, China
| | - Lin Xiao
- Department of Molecular Biology and Biochemistry, Weifang Medical University, Weifang, China
| | - Zhenming Wang
- Department of Clinical Laboratory, Weifang People's Hospital, Weifang, China
| | - Junhong Dong
- Department of Molecular Biology and Biochemistry, Weifang Medical University, Weifang, China
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Lu L, Huang J, Xue X, Wang T, Huang Z, Li J. Berberine Regulated miR150-5p to Inhibit P2X7 Receptor, EMMPRIN and MMP-9 Expression in oxLDL Induced Macrophages. Front Pharmacol 2021; 12:639558. [PMID: 33959010 PMCID: PMC8093865 DOI: 10.3389/fphar.2021.639558] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2020] [Accepted: 03/25/2021] [Indexed: 02/05/2023] Open
Abstract
Elevated extracellular matrix metalloproteinase inducer (EMMPRIN) and matrix metalloproteinase-9 (MMP-9) in oxidized low density lipoprotein (oxLDL)-induced macrophages leads to the progression of vulnerable plaques by degradation of the extracellular matrix. Our previous report showed that berberine regulates the expression of both EMMPRIN and MMP-9. In addition, P2X7 receptor (P2X7R) upregulation plays a crucial role in the development of atherosclerosis. However, it is unclear whether berberine regulated P2X7R level to inhibit both EMMPRIN and MMP-9 expession in macrophages. In the present study, we investigated the impact of berberine on P2X7R expression and the regulation of P2X7R in the expression of EMMPRIN and MMP-9 in oxLDL-induced macrophages. We found that P2X7R expression was increased, miR150-5p was reduced in oxLDL-induced macrophages, relatively. And A-438079 (a P2X7R inhibitor) or miR150-5p mimic treatment greatly reversed the upregulation of EMMPRIN and MMP-9 expression. Moreover, A-438079 significantly reduced oxLDL-induced AMP-activated protein kinase-α (AMPK-α) phosphorylation and reversed the activation of mitogen-activated protein kinase (MAPK), which in turn decreased the expression of EMMPRIN and MMP-9. These findings illustrate that P2X7R suppresses EMMPRIN and MMP-9 expression by inhibiting the AMPK-α/MAPK pathway in oxLDL-induced macrophages. Accordingly, exposure to berberine markedly upregulated miR150-5p, decreased P2X7R expression and downregulated MMP-9 and EMMPRIN levels in oxLDL-induced macrophages, resulting in AMPK-α/MAPK (JNK, p38, and ERK) inactivation. Overall, these results indicate that berberine increased miR150-5p level, subsequently inhibits P2X7R-mediated EMMPRIN and MMP-9 expression by suppressing AMPK-α and MAPK signaling in oxLDL-induced macrophages.
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Affiliation(s)
- Lin Lu
- The Key Laboratory of Cardiovascular Disease of Wenzhou, Department of Cardiology, The First Affiliated Hospital of WenZhou Medical University, Wenzhou, China
| | - Jianjian Huang
- Department of Anesthesiology, Wenzhou Medical University, Wenzhou, China
| | - Xia Xue
- The Key Laboratory of Cardiovascular Disease of Wenzhou, Department of Cardiology, The First Affiliated Hospital of WenZhou Medical University, Wenzhou, China
| | - Ting Wang
- The Key Laboratory of Cardiovascular Disease of Wenzhou, Department of Cardiology, The First Affiliated Hospital of WenZhou Medical University, Wenzhou, China
| | - Zhouqing Huang
- The Key Laboratory of Cardiovascular Disease of Wenzhou, Department of Cardiology, The First Affiliated Hospital of WenZhou Medical University, Wenzhou, China
| | - Jianmin Li
- Department of Pathology, The First Affiliated Hospital of WenZhou Medical University, Wenzhou, China
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5
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Kurosawa R, Satoh K, Nakata T, Shindo T, Kikuchi N, Satoh T, Siddique MAH, Omura J, Sunamura S, Nogi M, Takeuchi Y, Miyata S, Shimokawa H. Identification of Celastrol as a Novel Therapeutic Agent for Pulmonary Arterial Hypertension and Right Ventricular Failure Through Suppression of Bsg (Basigin)/CyPA (Cyclophilin A). Arterioscler Thromb Vasc Biol 2021; 41:1205-1217. [PMID: 33472404 DOI: 10.1161/atvbaha.120.315731] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
OBJECTIVE Pulmonary arterial hypertension is characterized by abnormal proliferation of pulmonary artery smooth muscle cells and vascular remodeling, which leads to right ventricular (RV) failure. Bsg (Basigin) is a transmembrane glycoprotein that promotes myofibroblast differentiation, cell proliferation, and matrix metalloproteinase activation. CyPA (cyclophilin A) binds to its receptor Bsg and promotes pulmonary artery smooth muscle cell proliferation and inflammatory cell recruitment. We previously reported that Bsg promotes cardiac fibrosis and failure in the left ventricle in response to pressure-overload in mice. However, the roles of Bsg and CyPA in RV failure remain to be elucidated. Approach and Results: First, we found that protein levels of Bsg and CyPA were upregulated in the heart of hypoxia-induced pulmonary hypertension (PH) in mice and monocrotaline-induced PH in rats. Furthermore, cardiomyocyte-specific Bsg-overexpressing mice showed exacerbated RV hypertrophy, fibrosis, and dysfunction compared with their littermates under chronic hypoxia and pulmonary artery banding. Treatment with celastrol, which we identified as a suppressor of Bsg and CyPA by drug screening, decreased proliferation, reactive oxygen species, and inflammatory cytokines in pulmonary artery smooth muscle cells. Furthermore, celastrol treatment ameliorated RV systolic pressure, hypertrophy, fibrosis, and dysfunction in hypoxia-induced PH in mice and SU5416/hypoxia-induced PH in rats with reduced Bsg, CyPA, and inflammatory cytokines in the hearts and lungs. CONCLUSIONS These results indicate that elevated Bsg in pressure-overloaded RV exacerbates RV dysfunction and that celastrol ameliorates RV dysfunction in PH model animals by suppressing Bsg and its ligand CyPA. Thus, celastrol can be a novel drug for PH and RV failure that targets Bsg and CyPA. Graphic Abstract: A graphic abstract is available for this article.
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Affiliation(s)
- Ryo Kurosawa
- Department of Cardiovascular Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Kimio Satoh
- Department of Cardiovascular Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Takashi Nakata
- Department of Cardiovascular Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Tomohiko Shindo
- Department of Cardiovascular Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Nobuhiro Kikuchi
- Department of Cardiovascular Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Taijyu Satoh
- Department of Cardiovascular Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Mohammad A H Siddique
- Department of Cardiovascular Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Junichi Omura
- Department of Cardiovascular Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Shinichiro Sunamura
- Department of Cardiovascular Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Masamichi Nogi
- Department of Cardiovascular Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Yutaro Takeuchi
- Department of Cardiovascular Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Satoshi Miyata
- Department of Cardiovascular Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Hiroaki Shimokawa
- Department of Cardiovascular Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan
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6
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Zhao S, Tang L, Chen W, Su J, Li F, Chen X, Wu L. Resveratrol-induced apoptosis is associated with regulating the miR-492/CD147 pathway in malignant melanoma cells. Naunyn Schmiedebergs Arch Pharmacol 2020; 394:797-807. [PMID: 33009925 DOI: 10.1007/s00210-020-01981-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Accepted: 09/23/2020] [Indexed: 01/17/2023]
Abstract
Resveratrol (RES) as a natural phytoalexin has anti-tumor effects on various cancers through its pro-apoptotic activities. Our aim was to determine that RES induces apoptosis in melanoma cells by regulating miR-492 resulting in decreased CD147 expression. We treated A375 and SK-MEL-28 melanoma cells via RES at different concentrations and time-points. The results have shown that the inhibition rate of A375 and SK-MEL-28 was significantly increased after RES treatment. Subsequently, we investigated cell apoptosis by flow cytometry, as well as detected apoptotic-associated proteins including PARP, Caspase-3, Bcl-2, and Bax by western blotting. Meanwhile, the expression of miR-492 and CD147 was analyzed. We found that RES remarkably induces apoptosis in melanoma cells, along with an upregulation of miR-492 and the inhibition of CD147 expression. Furthermore, the detection of luciferase reporter activity confirmed that miR-492 could target CD147 mRNA, and transfected with mimic miR-492 in cells reduced CD147 expression. We also performed the rescued experiment by using a miR-492 inhibitor in melanoma cells. The results showed that the ability of induced apoptosis by RES in melanoma cells was to be attenuated via inhibiting miR-492 expression resulting in CD147 augment. Finally, we determined that the effect of RES-induced apoptosis in melanoma cells is associated with, at least in part, its ability to regulate the miR-492/CD147 pathway.
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Affiliation(s)
- Shuang Zhao
- Department of Dermatology, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, 410008, Hunan, China.,Hunan Key Laboratory of Skin Cancer and Psoriasis, Changsha, 410008, Hunan, China
| | - Ling Tang
- Hunan Key Laboratory of Skin Cancer and Psoriasis, Changsha, 410008, Hunan, China.,Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha, 410008, Hunan, China
| | - Wangqing Chen
- Department of Dermatology, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, 410008, Hunan, China.,Hunan Key Laboratory of Skin Cancer and Psoriasis, Changsha, 410008, Hunan, China
| | - Juan Su
- Department of Dermatology, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, 410008, Hunan, China.,Hunan Key Laboratory of Skin Cancer and Psoriasis, Changsha, 410008, Hunan, China
| | - Fangfang Li
- Department of Dermatology, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, 410008, Hunan, China.,Hunan Key Laboratory of Skin Cancer and Psoriasis, Changsha, 410008, Hunan, China
| | - Xiang Chen
- Department of Dermatology, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, 410008, Hunan, China.,Hunan Key Laboratory of Skin Cancer and Psoriasis, Changsha, 410008, Hunan, China
| | - Lisha Wu
- Department of Dermatology, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, 410008, Hunan, China. .,Hunan Key Laboratory of Skin Cancer and Psoriasis, Changsha, 410008, Hunan, China. .,Institute of Medical Sciences, Xiangya Hospital, Central South University, Changsha, 410008, Hunan, China. .,National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, 410008, Hunan, China.
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7
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Clinical Significance of CD147 in Children with Inflammatory Bowel Disease. BIOMED RESEARCH INTERNATIONAL 2020; 2020:7647181. [PMID: 33015178 PMCID: PMC7516708 DOI: 10.1155/2020/7647181] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/19/2020] [Revised: 05/24/2020] [Accepted: 06/03/2020] [Indexed: 02/06/2023]
Abstract
Background CD147/basigin (Bsg), a transmembrane glycoprotein, activates matrix metalloproteinases and promotes inflammation. Objective The aim of this study is to explore the clinical significance of CD147 in the pathogenesis of inflammatory bowel disease (IBD). Results In addition to monocytes, the clinical analysis showed that there is no significance obtained in leucocyte, neutrophil, eosinophil, basophil, and erythrocyte between IBD and controls. Immunohistochemistry analysis showed that CD147 was increased in intestinal tissue of patients with active IBD compared to that in the control group. What is more, CD147 is involved in intestinal barrier function and intestinal inflammation, which was attributed to the fact that it has an influence on MCT4 expression, a regulator of intestinal barrier function and intestinal inflammation, in HT-29 and CaCO2 cells. Most importantly, serum level of CD147 content is higher in active IBD than that in inactive IBD or healthy control, which could be a biomarker of IBD. Conclusion The data suggested that increased CD147 level could be a biomarker of IBD in children.
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8
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Sharifpour S, Fakhraee S, Behjatmanesh-Ardakani R. Insights into the mechanism of inhibition of phospholipase A2 by resveratrol: An extensive molecular dynamics simulation and binding free energy calculation. J Mol Graph Model 2020; 100:107649. [PMID: 32739638 DOI: 10.1016/j.jmgm.2020.107649] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2020] [Revised: 06/02/2020] [Accepted: 06/03/2020] [Indexed: 10/23/2022]
Abstract
Phospholipase A2 (PLA2) is one of the enzymes involved in the development of cardiovascular diseases, vascular inflammation, risk of heart attacks, and strokes. This enzyme is responsible for catalyzing the hydrolytic cleavage of ester bonds of phospholipids in the biological pathway of inflammation. To prevent the undesired hydrolysis of phospholipids, the catalytic activity of PLA2 needs to be blocked. Resveratrol is a plant-derived polyphenol inhibitor, proven to have anti-inflammatory properties. However, there is still substantial ambiguity about its inhibitory function. The present study uncovers a detailed molecular mechanism behind the resveratrol action in inhibition of PLA2, by applying and comparing two 200-ns molecular dynamics simulations. The results of structural analyses revealed that the binding of resveratrol to PLA2 reduces the content of β-sheets and increases a 5-helix to PLA2 structure, producing more folding and stability in protein. In the active site, the resveratrol is placed between the N-terminal α-helix and the newly formed 5-helix through the hydrophobic interactions with ILE19 and LEU3 residues, as well as the hydrogen bond interactions. These interactions play the role of a network at the entrance of the enzyme active site and prevent the penetration of water molecules into the PLA2 cavity. A high occupancy hydrogen bonding has been identified between SER23 of the protein and hydroxyl group of resveratrol. Furthermore, the estimation of binding free energy verified the binding affinity of resveratrol is thermodynamically sufficient to be stably bounded to PLA2. It also proved that the van der Waals interactions, particularly hydrophobic interactions, have the most significant role in PLA2-resveratrol binding and stability. Overall, our results provide useful information on the stepwise mechanism of the inhibition of PLA2 enzyme by resveratrol, as a target for improving the pharmacological applications.
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Affiliation(s)
- Sajedeh Sharifpour
- Department of Chemistry, Payame Noor University, 19395-3697, Tehran, Iran
| | - Sara Fakhraee
- Department of Chemistry, Payame Noor University, 19395-3697, Tehran, Iran.
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9
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Sánchez-Martín V, Jiménez-García L, Herranz S, Luque A, Acebo P, Amesty Á, Estévez-Braun A, de Las Heras B, Hortelano S. α-Hispanolol Induces Apoptosis and Suppresses Migration and Invasion of Glioblastoma Cells Likely via Downregulation of MMP-2/9 Expression and p38MAPK Attenuation. Front Pharmacol 2019; 10:935. [PMID: 31551765 PMCID: PMC6733979 DOI: 10.3389/fphar.2019.00935] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2019] [Accepted: 07/22/2019] [Indexed: 12/14/2022] Open
Abstract
α-Hispanolol (α-H) is a labdane diterpenoid that has been shown to induce apoptosis in several human cancer cells. However, the effect of α-H in human glioblastoma cells has not been described. In the present work, we have investigated the effects of α-H on apoptosis, migration, and invasion of human glioblastoma cells with the aim of identifying the molecular targets underlying its mechanism of action. The results revealed that α-H showed significant cytotoxicity against human glioma cancer cell lines U87 and U373 in a concentration- and time-dependent manner. This effect was higher in U87 cells and linked to apoptosis, as revealed the increased percentage of sub-G1 population by cell cycle analysis and acquisition of typical features of apoptotic cell morphology. Apoptosis was also confirmed by significant presence of annexin V-positive cells and caspase activation. Pretreatment with caspase inhibitors diminishes the activities of caspase 8, 9, and 3 and maintains the percentage of viable glioblastoma cells, indicating that α-H induced cell apoptosis through both the extrinsic and the intrinsic pathways. Moreover, we also found that α-H downregulated the anti-apoptotic Bcl-2 and Bcl-xL proteins and activated the pro-apoptotic Bid and Bax proteins. On the other hand, α-H exhibited inhibitory effects on the migration and invasion of U87 cells in a concentration-dependent manner. Furthermore, additional experiments showed that α-H treatment reduced the enzymatic activities and protein levels of matrix metalloproteinase MMP-2 and MMP-9 and increased the expression of TIMP-1 inhibitor, probably via p38MAPK regulation. Finally, xenograft assays confirmed the anti-glioma efficacy of α-H. Taken together, these findings suggest that α-H may exert anti-tumoral effects in vitro and in vivo through the inhibition of cell proliferation and invasion as well as by the induction of apoptosis in human glioblastoma cells. This research describes α-H as a new drug that may improve the therapeutic efficacy against glioblastoma tumors.
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Affiliation(s)
- Vanesa Sánchez-Martín
- Unidad de Terapias Farmacológicas, Área de Genética Humana, Instituto de Investigación de Enfermedades Raras (IIER), Instituto de Salud Carlos III, Madrid, Spain.,Departamento de Farmacología, Farmacognosia y Botánica, Facultad de Farmacia, Universidad Complutense de Madrid (UCM), Madrid, Spain
| | - Lidia Jiménez-García
- Unidad de Terapias Farmacológicas, Área de Genética Humana, Instituto de Investigación de Enfermedades Raras (IIER), Instituto de Salud Carlos III, Madrid, Spain
| | - Sandra Herranz
- Unidad de Terapias Farmacológicas, Área de Genética Humana, Instituto de Investigación de Enfermedades Raras (IIER), Instituto de Salud Carlos III, Madrid, Spain
| | - Alfonso Luque
- Unidad de Terapias Farmacológicas, Área de Genética Humana, Instituto de Investigación de Enfermedades Raras (IIER), Instituto de Salud Carlos III, Madrid, Spain
| | - Paloma Acebo
- Unidad de Terapias Farmacológicas, Área de Genética Humana, Instituto de Investigación de Enfermedades Raras (IIER), Instituto de Salud Carlos III, Madrid, Spain
| | - Ángel Amesty
- Departamento de Química Orgánica, Instituto Universitario de Bio-Orgánica Antonio González, Universidad de La Laguna, La Laguna, Tenerife, Spain
| | - Ana Estévez-Braun
- Departamento de Química Orgánica, Instituto Universitario de Bio-Orgánica Antonio González, Universidad de La Laguna, La Laguna, Tenerife, Spain
| | - Beatriz de Las Heras
- Departamento de Farmacología, Farmacognosia y Botánica, Facultad de Farmacia, Universidad Complutense de Madrid (UCM), Madrid, Spain
| | - Sonsoles Hortelano
- Unidad de Terapias Farmacológicas, Área de Genética Humana, Instituto de Investigación de Enfermedades Raras (IIER), Instituto de Salud Carlos III, Madrid, Spain
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10
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Yee C, Main NM, Terry A, Stevanovski I, Maczurek A, Morgan AJ, Calabro S, Potter AJ, Iemma TL, Bowen DG, Ahlenstiel G, Warner FJ, McCaughan GW, McLennan SV, Shackel NA. CD147 mediates intrahepatic leukocyte aggregation and determines the extent of liver injury. PLoS One 2019; 14:e0215557. [PMID: 31291257 PMCID: PMC6619953 DOI: 10.1371/journal.pone.0215557] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2019] [Accepted: 06/24/2019] [Indexed: 01/26/2023] Open
Abstract
Background Chronic inflammation is the driver of liver injury and results in progressive fibrosis and eventual cirrhosis with consequences including both liver failure and liver cancer. We have previously described increased expression of the highly multifunctional glycoprotein CD147 in liver injury. This work describes a novel role of CD147 in liver inflammation and the importance of leukocyte aggregates in determining the extent of liver injury. Methods Non-diseased, progressive injury, and cirrhotic liver from humans and mice were examined using a mAb targeting CD147. Inflammatory cell subsets were assessed by multiparameter flow cytometry. Results In liver injury, we observe abundant, intrahepatic leukocyte clusters defined as ≥5 adjacent CD45+ cells which we have termed “leukocyte aggregates”. We have shown that these leukocyte aggregates have a significant effect in determining the extent of liver injury. If CD147 is blocked in vivo, these leukocyte aggregates diminish in size and number, together with a marked significant reduction in liver injury including fibrosis. This is accompanied by no change in overall intrahepatic leukocyte numbers. Further, blocking of aggregation formation occurs prior to an appreciable increase in inflammatory markers or fibrosis. Additionally, there were no observed, “off-target” or unpredicted effects in targeting CD147. Conclusion CD147 mediates leukocyte aggregation which is associated with the development of liver injury. This is not a secondary effect, but a cause of injury as aggregate formation proceeds other markers of injury. Leukocyte aggregation has been previously described in inflammation dating back over many decades. Here we demonstrate that leukocyte aggregates determine the extent of liver injury.
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Affiliation(s)
- Christine Yee
- Centenary Institute of Cancer Medicine and Cell Biology, The University of Sydney, NSW, Australia
- Gastroenterology and Liver Laboratory, Ingham Institute for Applied Medical Research, Liverpool, NSW, Australia
| | - Nathan M. Main
- Gastroenterology and Liver Laboratory, Ingham Institute for Applied Medical Research, Liverpool, NSW, Australia
| | - Alexandra Terry
- Centenary Institute of Cancer Medicine and Cell Biology, The University of Sydney, NSW, Australia
- Gastroenterology and Liver Laboratory, Ingham Institute for Applied Medical Research, Liverpool, NSW, Australia
| | - Igor Stevanovski
- Gastroenterology and Liver Laboratory, Ingham Institute for Applied Medical Research, Liverpool, NSW, Australia
| | - Annette Maczurek
- Centenary Institute of Cancer Medicine and Cell Biology, The University of Sydney, NSW, Australia
| | - Alison J. Morgan
- Centenary Institute of Cancer Medicine and Cell Biology, The University of Sydney, NSW, Australia
| | - Sarah Calabro
- Centenary Institute of Cancer Medicine and Cell Biology, The University of Sydney, NSW, Australia
| | - Alison J. Potter
- Centenary Institute of Cancer Medicine and Cell Biology, The University of Sydney, NSW, Australia
| | - Tina L. Iemma
- Centenary Institute of Cancer Medicine and Cell Biology, The University of Sydney, NSW, Australia
| | - David G. Bowen
- Centenary Institute of Cancer Medicine and Cell Biology, The University of Sydney, NSW, Australia
- A.W. Morrow Gastroenterology and Liver Centre, Royal Prince Alfred Hospital, Camperdown, NSW, Australia
| | - Golo Ahlenstiel
- Western Sydney School of Medicine, Blacktown Hospital, Blacktown, NSW, Australia
| | - Fiona J. Warner
- Centenary Institute of Cancer Medicine and Cell Biology, The University of Sydney, NSW, Australia
| | - Geoffrey W. McCaughan
- Centenary Institute of Cancer Medicine and Cell Biology, The University of Sydney, NSW, Australia
- A.W. Morrow Gastroenterology and Liver Centre, Royal Prince Alfred Hospital, Camperdown, NSW, Australia
| | - Susan V. McLennan
- Department of Endocrinology, Department of Medicine and Bosch Institute, Royal Prince Alfred Hospital, The University of Sydney, NSW, Australia
| | - Nicholas A. Shackel
- Centenary Institute of Cancer Medicine and Cell Biology, The University of Sydney, NSW, Australia
- Gastroenterology and Liver Laboratory, Ingham Institute for Applied Medical Research, Liverpool, NSW, Australia
- A.W. Morrow Gastroenterology and Liver Centre, Royal Prince Alfred Hospital, Camperdown, NSW, Australia
- Liverpool Hospital, Liverpool, NSW, Australia
- * E-mail:
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11
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Resveratrol Abrogates Hypoxia-Induced Up-Regulation of Exosomal Amyloid-β Partially by Inhibiting CD147. Neurochem Res 2019; 44:1113-1126. [DOI: 10.1007/s11064-019-02742-3] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2018] [Revised: 01/23/2019] [Accepted: 01/24/2019] [Indexed: 12/14/2022]
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12
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Chung YH, Kim HY, Yoon BR, Kang YJ, Lee WW. Suppression of Syk activation by resveratrol inhibits MSU crystal-induced inflammation in human monocytes. J Mol Med (Berl) 2019; 97:369-383. [PMID: 30637441 DOI: 10.1007/s00109-018-01736-y] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2018] [Revised: 12/10/2018] [Accepted: 12/17/2018] [Indexed: 12/13/2022]
Abstract
Monosodium urate (MSU) crystals are an endogenous sterile particulate that has been identified as a potent damage-associated molecular pattern (DAMP). In humans, the induction of IL-1β production through MSU-induced NLRP3 inflammasome activation in monocytes/macrophages is responsible for pathogenesis of gouty arthritis. It was recently reported that in a murine model of this disease, resveratrol decreases MSU-induced recurrent attacks of gouty arthritis. Despite its demonstrated anti-inflammatory effects, the mechanisms underlying resveratrol-mediated repression of IL-1β production in MSU-activated monocytes remain poorly understood. Here, we show that resveratrol suppresses secretion of active IL-1β by human primary monocytes stimulated with MSU crystals through suppression of Syk activation. Metabolic labeling and pull-down assays to investigate de novo protein synthesis clearly demonstrated that intracellular pro-IL-1β synthesis is rapidly repressed in monocytes after resveratrol treatment due to decreased phosphorylation of Syk and p38. Resveratrol also inhibited NLRP3 inflammasome activation in MSU-stimulated monocytes by suppressing oligomerization of ASC. Furthermore, resveratrol exerted a beneficial effect by reducing IL-1β production and inhibiting neutrophil recruitment in a mouse model of MSU-mediated peritonitis. Our findings suggest that resveratrol exerts anti-inflammatory effects via post-translational regulation of IL-1β production and, thus, may prove beneficial for the treatment of MSU crystal-mediated sterile inflammation. KEY MESSAGE: Resveratrol has negative effects on pro-IL-1β synthesis through Syk and p38. Resveratrol inhibits oligomerization of ASC. Resveratrol is beneficial in a mouse model of MSU-induced peritonitis.
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Affiliation(s)
- Yeon-Ho Chung
- Department of Biomedical Sciences, and BK21 Plus Biomedical Science Project, Seoul National University College of Medicine, 103 Daehak-ro, Jongno-gu, Seoul, 03080, South Korea.,Department of Orthopedics and Rehabilitation, Yale University School of Medicine, 330 Cedar Street, Tompkins Memorial Pavilion, New Haven, CT, 06520-8071, USA
| | - Hee Young Kim
- Department of Microbiology and Immunology, Seoul National University College of Medicine, 103 Daehak-ro, Jongno-gu, Seoul, 03080, South Korea
| | - Bo Ruem Yoon
- Department of Microbiology and Immunology, Seoul National University College of Medicine, 103 Daehak-ro, Jongno-gu, Seoul, 03080, South Korea
| | - Yeon Jun Kang
- Department of Biomedical Sciences, and BK21 Plus Biomedical Science Project, Seoul National University College of Medicine, 103 Daehak-ro, Jongno-gu, Seoul, 03080, South Korea
| | - Won-Woo Lee
- Department of Biomedical Sciences, and BK21 Plus Biomedical Science Project, Seoul National University College of Medicine, 103 Daehak-ro, Jongno-gu, Seoul, 03080, South Korea. .,Department of Microbiology and Immunology, Seoul National University College of Medicine, 103 Daehak-ro, Jongno-gu, Seoul, 03080, South Korea. .,Cancer Research Institute, Ischemic/Hypoxic Disease Institute, and Institute of Infectious Diseases, Seoul National University College of Medicine, Seoul, South Korea. .,Seoul National University Hospital Biomedical Research Institute, 103 Daehak-ro, Jongno-gu, Seoul, 03080, South Korea.
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13
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Huang Z, Ye B, Han J, Kong F, Shan P, Lu Z, Huang Z, Huang W. NACHT, LRR and PYD domains-containing protein 3 inflammasome is activated and inhibited by berberine via toll-like receptor 4/myeloid differentiation primary response gene 88/nuclear factor-κB pathway, in phorbol 12-myristate 13-acetate-induced macrophages. Mol Med Rep 2017; 17:2673-2680. [PMID: 29207123 DOI: 10.3892/mmr.2017.8189] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2016] [Accepted: 06/20/2017] [Indexed: 11/06/2022] Open
Abstract
The nucleotide-binding domain, leucine-rich-containing family, pyrin domain-containing-3 (NLRP-3) inflammasome has recently emerged as a pivotal regulator of chronic inflammation. The present study investigated the expression of NLRP3 inflammasome in phorbol 12-myristate 13-acetate (PMA)-induced macrophages, and aimed to identify the effects of berberine on the inflammasome. Human monocytic THP-1 cells were pretreated with berberine for 1 h and then induced with PMA for 48 h. Total RNA and protein were collected for reverse transcription-quantitative polymerase chain reaction and western blot analysis, respectively. Supernatants were collected to determine IL-1β levels by using ELISA. The present study demonstrated that NLRP3 inflammasome and IL-1β were activated in PMA-induced macrophages in a time-dependent manner, whereas berberine significantly inhibited their expression in a dose-dependent manner in PMA-induced macrophages. Furthermore, berberine also suppressed the toll-like receptor 4 (TLR4)/myeloid differentiation primary response gene 88 (Myd88)/nuclear factor (NF)-κB signaling pathway which was activated during the conversion of THP-1 cells to macrophages by PMA. In conclusion, berberine reduced NLRP3 inflammasone expression by suppressing the activation of the TLR4/Myd88/NF-κB signaling pathway in PMA-induced macrophages. This inhibitory effect may imply an important role of berberine on chronic inflammation and atherogenic progression in coronary artery disease.
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Affiliation(s)
- Zhouqing Huang
- Department of Cardiology, The Key Laboratory of Cardiovascular Disease of Wenzhou, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, P.R. China
| | - Bozhi Ye
- Department of Cardiology, The Key Laboratory of Cardiovascular Disease of Wenzhou, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, P.R. China
| | - Jibo Han
- Department of Cardiology, The Key Laboratory of Cardiovascular Disease of Wenzhou, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, P.R. China
| | - Fanqi Kong
- Department of Cardiology, The Key Laboratory of Cardiovascular Disease of Wenzhou, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, P.R. China
| | - Peiren Shan
- Department of Cardiology, The Key Laboratory of Cardiovascular Disease of Wenzhou, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, P.R. China
| | - Zhongqiu Lu
- Department of Emergency, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, P.R. China
| | - Zhouqing Huang
- Department of Cardiology, The Key Laboratory of Cardiovascular Disease of Wenzhou, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, P.R. China
| | - Weijian Huang
- Department of Cardiology, The Key Laboratory of Cardiovascular Disease of Wenzhou, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, P.R. China
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14
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Sun S, Zhang M, Yang Q, Shen Z, Chen J, Yu B, Wang H, Qu J, Pang D, Ren W, Ouyang H, Tang X. Resveratrol suppresses lipoprotein-associated phospholipase A2
expression by reducing oxidative stress in macrophages and animal models. Mol Nutr Food Res 2017; 61. [DOI: 10.1002/mnfr.201601112] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2017] [Revised: 06/04/2017] [Accepted: 06/06/2017] [Indexed: 12/12/2022]
Affiliation(s)
- Shengnan Sun
- Jilin Provincial Model Animal Engineering Research Center; College of Animal Sciences,; Jilin University; Changchun China
| | - Mingjun Zhang
- Jilin Provincial Model Animal Engineering Research Center; College of Animal Sciences,; Jilin University; Changchun China
| | - Qiangbing Yang
- Jilin Provincial Model Animal Engineering Research Center; College of Animal Sciences,; Jilin University; Changchun China
| | - Ziying Shen
- Jilin Provincial Model Animal Engineering Research Center; College of Animal Sciences,; Jilin University; Changchun China
| | - Jiahuan Chen
- Jilin Provincial Model Animal Engineering Research Center; College of Animal Sciences,; Jilin University; Changchun China
| | - Biao Yu
- Jilin Provincial Model Animal Engineering Research Center; College of Animal Sciences,; Jilin University; Changchun China
| | - He Wang
- Jilin Provincial Model Animal Engineering Research Center; College of Animal Sciences,; Jilin University; Changchun China
| | - Jiali Qu
- Jilin Provincial Model Animal Engineering Research Center; College of Animal Sciences,; Jilin University; Changchun China
| | - Daxin Pang
- Jilin Provincial Model Animal Engineering Research Center; College of Animal Sciences,; Jilin University; Changchun China
| | - Wenzhi Ren
- Jilin Provincial Model Animal Engineering Research Center; College of Animal Sciences,; Jilin University; Changchun China
| | - Hongsheng Ouyang
- Jilin Provincial Model Animal Engineering Research Center; College of Animal Sciences,; Jilin University; Changchun China
| | - Xiaochun Tang
- Jilin Provincial Model Animal Engineering Research Center; College of Animal Sciences,; Jilin University; Changchun China
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15
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Ramos-Lopez O, Milagro FI, Allayee H, Chmurzynska A, Choi MS, Curi R, De Caterina R, Ferguson LR, Goni L, Kang JX, Kohlmeier M, Marti A, Moreno LA, Pérusse L, Prasad C, Qi L, Reifen R, Riezu-Boj JI, San-Cristobal R, Santos JL, Martínez JA. Guide for Current Nutrigenetic, Nutrigenomic, and Nutriepigenetic Approaches for Precision Nutrition Involving the Prevention and Management of Chronic Diseases Associated with Obesity. JOURNAL OF NUTRIGENETICS AND NUTRIGENOMICS 2017; 10:43-62. [PMID: 28689206 DOI: 10.1159/000477729] [Citation(s) in RCA: 90] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Chronic diseases, including obesity, are major causes of morbidity and mortality in most countries. The adverse impacts of obesity and associated comorbidities on health remain a major concern due to the lack of effective interventions for prevention and management. Precision nutrition is an emerging therapeutic approach that takes into account an individual's genetic and epigenetic information, as well as age, gender, or particular physiopathological status. Advances in genomic sciences are contributing to a better understanding of the role of genetic variants and epigenetic signatures as well as gene expression patterns in the development of diverse chronic conditions, and how they may modify therapeutic responses. This knowledge has led to the search for genetic and epigenetic biomarkers to predict the risk of developing chronic diseases and personalizing their prevention and treatment. Additionally, original nutritional interventions based on nutrients and bioactive dietary compounds that can modify epigenetic marks and gene expression have been implemented. Although caution must be exercised, these scientific insights are paving the way for the design of innovative strategies for the control of chronic diseases accompanying obesity. This document provides a number of examples of the huge potential of understanding nutrigenetic, nutrigenomic, and nutriepigenetic roles in precision nutrition.
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Affiliation(s)
- Omar Ramos-Lopez
- Department of Molecular Biology in Medicine, Civil Hospital of Guadalajara "Fray Antonio Alcalde" and Health Sciences University Center, University of Guadalajara, Guadalajara, Mexico
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16
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Horikawa Y, Watanabe M, Sadahira T, Ariyoshi Y, Kobayashi Y, Araki M, Wada K, Ochiai K, Li SA, Nasu Y. Overexpression of REIC/Dkk-3 suppresses the expression of CD147 and inhibits the proliferation of human bladder cancer cells. Oncol Lett 2017; 14:3223-3228. [PMID: 28927069 DOI: 10.3892/ol.2017.6548] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2016] [Accepted: 04/25/2017] [Indexed: 02/06/2023] Open
Abstract
Our group previously developed an adenoviral vector encoding the REIC/Dkk-3 gene (Ad-REIC), a tumor suppressor, for cancer gene therapy. The Ad-REIC agent induces apoptosis and inhibits invasion in a number of cancer cell lines; however, the molecular mechanisms underlying its effects remain unclear. Cluster of differentiation 147 (CD147), also known as extracellular matrix metalloproteinase inducer (EMMPRIN), is a key molecule that promotes cancer proliferation and invasion. In order to elucidate the therapeutic mechanism of Ad-REIC, its effect on the expression of CD147 in human bladder cancer KK47 cells was investigated. Treatment with Ad-REIC markedly downregulated the expression of CD147 and significantly inhibited cellular proliferation. Since the expression of CD147 is reported to be under the positive control of mitogen-activated protein kinase (MAPK) signaling and the c-Myc protein, the correlations between the expression of CD147 and the activation of MAPKs or the expression of c-Myc were examined. Unexpectedly, no positive correlation was observed between the level of CD147 and the potential regulators that were assessed, indicating that another signaling pathway is responsible for the downregulation of CD147. The results from the present study demonstrate that Ad-REIC treatment can significantly downregulate the expression of CD147 in bladder cancer cells. Downregulation of the cancer-progression factor CD147 may be a novel mechanism that underlies the therapeutic effects of Ad-REIC treatment.
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Affiliation(s)
- Yuhei Horikawa
- Department of Urology, Okayama University, Okayama 700-8558, Japan
| | - Masami Watanabe
- Department of Urology, Okayama University, Okayama 700-8558, Japan.,Center for Innovative Clinical Medicine, Okayama University Hospital, Okayama 700-8558, Japan
| | - Takuya Sadahira
- Department of Urology, Okayama University, Okayama 700-8558, Japan
| | - Yuichi Ariyoshi
- Department of Urology, Okayama University, Okayama 700-8558, Japan
| | | | - Motoo Araki
- Department of Urology, Okayama University, Okayama 700-8558, Japan
| | - Koichiro Wada
- Department of Urology, Okayama University, Okayama 700-8558, Japan
| | - Kazuhiko Ochiai
- Department of Veterinary Nursing and Technology, Nippon Veterinary and Life Science University, Musashino, Tokyo 180-8602, Japan
| | - Shun-Ai Li
- Department of Urology, Okayama University, Okayama 700-8558, Japan.,Center for Innovative Clinical Medicine, Okayama University Hospital, Okayama 700-8558, Japan
| | - Yasutomo Nasu
- Department of Urology, Okayama University, Okayama 700-8558, Japan
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17
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Otsuka M, Okinaga T, Ariyoshi W, Kitamura C, Nishihara T. Ameloblastin Upregulates Inflammatory Response Through Induction of IL-1β in Human Macrophages. J Cell Biochem 2017; 118:3308-3317. [PMID: 28295583 DOI: 10.1002/jcb.25983] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2017] [Accepted: 03/08/2017] [Indexed: 11/10/2022]
Abstract
Ameloblastin (AMBN) is an enamel matrix protein that has various biological functions such as healing dental pulp and repairing bone fractures. In the present study, we clarified the effect of AMBN on the expression of an inflammatory cytokine, interleukin-1β (IL-1β) in lipopolysaccharide (LPS)-treated human macrophages. Real-time RT-PCR analysis showed that LPS treatment upregulated expression of the IL-1β gene in U937 cells. Interestingly, AMBN significantly enhanced IL-1β gene expression in LPS-treated U937 cells as well as the secretion of mature IL-1β into culture supernatants by these cells. AMBN also activated caspase-1 p10 expression in LPS-treated U937 cells. Pretreatment with a caspase-1 inhibitor, Z-YVAD-FMK, downregulated the mature IL-1β expression enhanced by AMBN treatment in LPS-treated U937 cells. A co-immunoprecipitation assay showed that treatment with LPS and AMBN upregulated toll-like receptor 4 (TLR4) and myeloid differentiation primary response gene 88 (MyD88) interactions, but there was no significant difference compared with LPS treatment alone in U937 cells. In contrast, western blot analysis revealed that AMBN remarkably prolonged the phosphorylation of extracellular signal-regulated kinase 1/2 (ERK1/2), a member of the mitogen-activated protein kinase (MAPK) family. An ERK1/2-selective inhibitor, U0126, suppressed expression of the IL-1β gene as well as its protein expression in U937 cells treated with LPS and AMBN. Taken together, these results indicate that AMBN enhances IL-1β production in LPS-treated U937 cells through ERK1/2 phosphorylation and caspase-1 activation, suggesting that AMBN upregulates the inflammatory response in human macrophages and plays an important role in innate immunity. J. Cell. Biochem. 118: 3308-3317, 2017. © 2017 Wiley Periodicals, Inc.
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Affiliation(s)
- Mai Otsuka
- Division of Infections and Molecular Biology, Department of Health Promotion, Kyushu Dental University, Kitakyushu 803-8580, Japan.,Division of Endodontics and Restorative Dentistry, Department of Oral Functions, Kyushu Dental University, Kitakyushu 803-8580, Japan
| | - Toshinori Okinaga
- Division of Infections and Molecular Biology, Department of Health Promotion, Kyushu Dental University, Kitakyushu 803-8580, Japan
| | - Wataru Ariyoshi
- Division of Infections and Molecular Biology, Department of Health Promotion, Kyushu Dental University, Kitakyushu 803-8580, Japan
| | - Chiaki Kitamura
- Division of Endodontics and Restorative Dentistry, Department of Oral Functions, Kyushu Dental University, Kitakyushu 803-8580, Japan
| | - Tatsuji Nishihara
- Division of Infections and Molecular Biology, Department of Health Promotion, Kyushu Dental University, Kitakyushu 803-8580, Japan
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18
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Zhang R, Lu M, Zhang Z, Tian X, Wang S, Lv D. Resveratrol reverses P-glycoprotein-mediated multidrug resistance of U2OS/ADR cells by suppressing the activation of the NF-κB and p38 MAPK signaling pathways. Oncol Lett 2016; 12:4147-4154. [PMID: 27895784 PMCID: PMC5104249 DOI: 10.3892/ol.2016.5136] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2015] [Accepted: 07/01/2016] [Indexed: 12/18/2022] Open
Abstract
The present study aimed to investigate the reversal effect of resveratrol on the phenomenon of multidrug resistance in U2OS/adriamycin (ADR) cells and to clarify the molecular mechanisms. To examine the cell survival and half-inhibitory concentration (IC50) of ADR in U2OS and U2OS/ADR cells, 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assay was used. The accumulation of ADR in U2OS and U2OS/ADR cells was investigated by flow cytometry. Reverse transcription-quantitative polymerase chain reaction and western blot analysis were used to detect the expression of multidrug resistance protein 1 (MDR1), P-glycoprotein (P-gp), p65 and p38. Compared with U2OS cells, the IC50 value of ADR was significantly increased in U2OS/ADR cells, which exhibited high levels of MDR1/P-gp. However, resveratrol could drastically reduce the IC50 value of ADR and the expression of MDR1/P-gp, and increased the accumulation of ADR in U2OS/ADR cells. In addition, the expression levels of p38 (phosphorylated) and p65 (acetylated and total) in U2OS/ADR cells were also significantly suppressed by resveratrol. These results suggested that the nuclear factor (NF)-κB and p38 mitogen-activated protein kinase (MAPK) signaling pathways are correlated with ADR-induced drug resistance in U2OS/ADR cells. Furthermore, resveratrol could downregulate the expression of MDR1/P-gp and reverse the drug resistance phenomenon in U2OS/ADR cells partly at least by suppressing the activation of the NF-κB and p38 MAPK signaling pathways.
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Affiliation(s)
- Rui Zhang
- Department of Orthopedics, The First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning 116011, P.R. China
| | - Ming Lu
- Department of Orthopedics, The First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning 116011, P.R. China
| | - Zhen Zhang
- Department of Orthopedics, The First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning 116011, P.R. China
| | - Xiliang Tian
- Department of Orthopedics, The First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning 116011, P.R. China
| | - Shouyu Wang
- Department of Orthopedics, The First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning 116011, P.R. China
| | - Decheng Lv
- Department of Orthopedics, The First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning 116011, P.R. China
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19
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Hahn JN, Kaushik DK, Mishra MK, Wang J, Silva C, Yong VW. Impact of Minocycline on Extracellular Matrix Metalloproteinase Inducer, a Factor Implicated in Multiple Sclerosis Immunopathogenesis. THE JOURNAL OF IMMUNOLOGY 2016; 197:3850-3860. [PMID: 27733550 DOI: 10.4049/jimmunol.1600436] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2016] [Accepted: 09/12/2016] [Indexed: 12/28/2022]
Abstract
Extracellular matrix metalloproteinase inducer (EMMPRIN, CD147) is a transmembrane glycoprotein that is upregulated on leukocytes in active lesions in multiple sclerosis (MS) and its animal model, experimental autoimmune encephalomyelitis (EAE). Administration of anti-EMMPRIN Abs reduces the severity of EAE. Minocycline is a tetracycline antibiotic with immune-modulatory properties that decreases the severity of EAE; it was recently found to attenuate the conversion from a first demyelinating event to clinically definite MS in a phase III trial. We investigated whether and how minocycline affects the expression of EMMPRIN on T cells in culture and in mice afflicted with EAE. EMMPRIN expression in cultures of mouse splenocytes or human PBMCs was elevated upon polyclonal T cell activation, and this was reduced by minocycline correspondent with decreased P-Akt levels. An established MS medication, IFN-β, also diminished EMMPRIN levels on human cells whereas this was not readily observed for fingolimod or monomethylfumarate. In EAE-afflicted mice, minocycline treatment significantly reduced EMMPRIN levels on splenic lymphocytes at the presymptomatic (day 7) phase, and prevented the development of disease. Day 7 spleen transcripts from minocycline-treated EAE mice had a significantly lower MMP-9/TIMP-1 ratio, and significantly lower MCT-1 and CD98 levels, factors associated with EMMPRIN function. Day 16 (peak clinical severity) CNS samples from EAE mice had prominent representation of inflammatory perivascular cuffs, inflammatory molecules and EMMPRIN, and these were abrogated by minocycline. Overall, minocycline attenuated the activation-induced elevation of EMMPRIN on T cells in culture and in EAE mice, correspondent with reduced immune function and EAE CNS pathology.
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Affiliation(s)
- Jennifer N Hahn
- Hotchkiss Brain Institute and Department of Clinical Neurosciences, Cumming School of Medicine, University of Calgary, Calgary, Alberta T2N 4N1, Canada
| | - Deepak K Kaushik
- Hotchkiss Brain Institute and Department of Clinical Neurosciences, Cumming School of Medicine, University of Calgary, Calgary, Alberta T2N 4N1, Canada
| | - Manoj K Mishra
- Hotchkiss Brain Institute and Department of Clinical Neurosciences, Cumming School of Medicine, University of Calgary, Calgary, Alberta T2N 4N1, Canada
| | - Jianxiong Wang
- Hotchkiss Brain Institute and Department of Clinical Neurosciences, Cumming School of Medicine, University of Calgary, Calgary, Alberta T2N 4N1, Canada
| | - Claudia Silva
- Hotchkiss Brain Institute and Department of Clinical Neurosciences, Cumming School of Medicine, University of Calgary, Calgary, Alberta T2N 4N1, Canada
| | - V Wee Yong
- Hotchkiss Brain Institute and Department of Clinical Neurosciences, Cumming School of Medicine, University of Calgary, Calgary, Alberta T2N 4N1, Canada
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Suzuki K, Satoh K, Ikeda S, Sunamura S, Otsuki T, Satoh T, Kikuchi N, Omura J, Kurosawa R, Nogi M, Numano K, Sugimura K, Aoki T, Tatebe S, Miyata S, Mukherjee R, Spinale FG, Kadomatsu K, Shimokawa H. Basigin Promotes Cardiac Fibrosis and Failure in Response to Chronic Pressure Overload in Mice. Arterioscler Thromb Vasc Biol 2016; 36:636-46. [DOI: 10.1161/atvbaha.115.306686] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2015] [Accepted: 02/16/2016] [Indexed: 01/08/2023]
Affiliation(s)
- Kota Suzuki
- From the Department of Cardiovascular Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan (K.S., K.S., S.I., S.S., T.O., T.S., N.K., J.O., R.K., M.N., K.N., K.S., T.A., S.T., H.S.); Division of Cardiothoracic Surgery, Medical University of South Carolina, Charleston (R.M.); Department of Cell Biology and Anatomy, University of South Carolina School of Medicine, Columbia (F.G.S.); and Department of Biochemistry, Nagoya University Graduate School of Medicine, Nagoya, Japan (K.K.)
| | - Kimio Satoh
- From the Department of Cardiovascular Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan (K.S., K.S., S.I., S.S., T.O., T.S., N.K., J.O., R.K., M.N., K.N., K.S., T.A., S.T., H.S.); Division of Cardiothoracic Surgery, Medical University of South Carolina, Charleston (R.M.); Department of Cell Biology and Anatomy, University of South Carolina School of Medicine, Columbia (F.G.S.); and Department of Biochemistry, Nagoya University Graduate School of Medicine, Nagoya, Japan (K.K.)
| | - Shohei Ikeda
- From the Department of Cardiovascular Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan (K.S., K.S., S.I., S.S., T.O., T.S., N.K., J.O., R.K., M.N., K.N., K.S., T.A., S.T., H.S.); Division of Cardiothoracic Surgery, Medical University of South Carolina, Charleston (R.M.); Department of Cell Biology and Anatomy, University of South Carolina School of Medicine, Columbia (F.G.S.); and Department of Biochemistry, Nagoya University Graduate School of Medicine, Nagoya, Japan (K.K.)
| | - Shinichiro Sunamura
- From the Department of Cardiovascular Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan (K.S., K.S., S.I., S.S., T.O., T.S., N.K., J.O., R.K., M.N., K.N., K.S., T.A., S.T., H.S.); Division of Cardiothoracic Surgery, Medical University of South Carolina, Charleston (R.M.); Department of Cell Biology and Anatomy, University of South Carolina School of Medicine, Columbia (F.G.S.); and Department of Biochemistry, Nagoya University Graduate School of Medicine, Nagoya, Japan (K.K.)
| | - Tomohiro Otsuki
- From the Department of Cardiovascular Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan (K.S., K.S., S.I., S.S., T.O., T.S., N.K., J.O., R.K., M.N., K.N., K.S., T.A., S.T., H.S.); Division of Cardiothoracic Surgery, Medical University of South Carolina, Charleston (R.M.); Department of Cell Biology and Anatomy, University of South Carolina School of Medicine, Columbia (F.G.S.); and Department of Biochemistry, Nagoya University Graduate School of Medicine, Nagoya, Japan (K.K.)
| | - Taijyu Satoh
- From the Department of Cardiovascular Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan (K.S., K.S., S.I., S.S., T.O., T.S., N.K., J.O., R.K., M.N., K.N., K.S., T.A., S.T., H.S.); Division of Cardiothoracic Surgery, Medical University of South Carolina, Charleston (R.M.); Department of Cell Biology and Anatomy, University of South Carolina School of Medicine, Columbia (F.G.S.); and Department of Biochemistry, Nagoya University Graduate School of Medicine, Nagoya, Japan (K.K.)
| | - Nobuhiro Kikuchi
- From the Department of Cardiovascular Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan (K.S., K.S., S.I., S.S., T.O., T.S., N.K., J.O., R.K., M.N., K.N., K.S., T.A., S.T., H.S.); Division of Cardiothoracic Surgery, Medical University of South Carolina, Charleston (R.M.); Department of Cell Biology and Anatomy, University of South Carolina School of Medicine, Columbia (F.G.S.); and Department of Biochemistry, Nagoya University Graduate School of Medicine, Nagoya, Japan (K.K.)
| | - Junichi Omura
- From the Department of Cardiovascular Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan (K.S., K.S., S.I., S.S., T.O., T.S., N.K., J.O., R.K., M.N., K.N., K.S., T.A., S.T., H.S.); Division of Cardiothoracic Surgery, Medical University of South Carolina, Charleston (R.M.); Department of Cell Biology and Anatomy, University of South Carolina School of Medicine, Columbia (F.G.S.); and Department of Biochemistry, Nagoya University Graduate School of Medicine, Nagoya, Japan (K.K.)
| | - Ryo Kurosawa
- From the Department of Cardiovascular Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan (K.S., K.S., S.I., S.S., T.O., T.S., N.K., J.O., R.K., M.N., K.N., K.S., T.A., S.T., H.S.); Division of Cardiothoracic Surgery, Medical University of South Carolina, Charleston (R.M.); Department of Cell Biology and Anatomy, University of South Carolina School of Medicine, Columbia (F.G.S.); and Department of Biochemistry, Nagoya University Graduate School of Medicine, Nagoya, Japan (K.K.)
| | - Masamichi Nogi
- From the Department of Cardiovascular Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan (K.S., K.S., S.I., S.S., T.O., T.S., N.K., J.O., R.K., M.N., K.N., K.S., T.A., S.T., H.S.); Division of Cardiothoracic Surgery, Medical University of South Carolina, Charleston (R.M.); Department of Cell Biology and Anatomy, University of South Carolina School of Medicine, Columbia (F.G.S.); and Department of Biochemistry, Nagoya University Graduate School of Medicine, Nagoya, Japan (K.K.)
| | - Kazuhiko Numano
- From the Department of Cardiovascular Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan (K.S., K.S., S.I., S.S., T.O., T.S., N.K., J.O., R.K., M.N., K.N., K.S., T.A., S.T., H.S.); Division of Cardiothoracic Surgery, Medical University of South Carolina, Charleston (R.M.); Department of Cell Biology and Anatomy, University of South Carolina School of Medicine, Columbia (F.G.S.); and Department of Biochemistry, Nagoya University Graduate School of Medicine, Nagoya, Japan (K.K.)
| | - Koichiro Sugimura
- From the Department of Cardiovascular Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan (K.S., K.S., S.I., S.S., T.O., T.S., N.K., J.O., R.K., M.N., K.N., K.S., T.A., S.T., H.S.); Division of Cardiothoracic Surgery, Medical University of South Carolina, Charleston (R.M.); Department of Cell Biology and Anatomy, University of South Carolina School of Medicine, Columbia (F.G.S.); and Department of Biochemistry, Nagoya University Graduate School of Medicine, Nagoya, Japan (K.K.)
| | - Tatsuo Aoki
- From the Department of Cardiovascular Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan (K.S., K.S., S.I., S.S., T.O., T.S., N.K., J.O., R.K., M.N., K.N., K.S., T.A., S.T., H.S.); Division of Cardiothoracic Surgery, Medical University of South Carolina, Charleston (R.M.); Department of Cell Biology and Anatomy, University of South Carolina School of Medicine, Columbia (F.G.S.); and Department of Biochemistry, Nagoya University Graduate School of Medicine, Nagoya, Japan (K.K.)
| | - Shunsuke Tatebe
- From the Department of Cardiovascular Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan (K.S., K.S., S.I., S.S., T.O., T.S., N.K., J.O., R.K., M.N., K.N., K.S., T.A., S.T., H.S.); Division of Cardiothoracic Surgery, Medical University of South Carolina, Charleston (R.M.); Department of Cell Biology and Anatomy, University of South Carolina School of Medicine, Columbia (F.G.S.); and Department of Biochemistry, Nagoya University Graduate School of Medicine, Nagoya, Japan (K.K.)
| | - Satoshi Miyata
- From the Department of Cardiovascular Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan (K.S., K.S., S.I., S.S., T.O., T.S., N.K., J.O., R.K., M.N., K.N., K.S., T.A., S.T., H.S.); Division of Cardiothoracic Surgery, Medical University of South Carolina, Charleston (R.M.); Department of Cell Biology and Anatomy, University of South Carolina School of Medicine, Columbia (F.G.S.); and Department of Biochemistry, Nagoya University Graduate School of Medicine, Nagoya, Japan (K.K.)
| | - Rupak Mukherjee
- From the Department of Cardiovascular Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan (K.S., K.S., S.I., S.S., T.O., T.S., N.K., J.O., R.K., M.N., K.N., K.S., T.A., S.T., H.S.); Division of Cardiothoracic Surgery, Medical University of South Carolina, Charleston (R.M.); Department of Cell Biology and Anatomy, University of South Carolina School of Medicine, Columbia (F.G.S.); and Department of Biochemistry, Nagoya University Graduate School of Medicine, Nagoya, Japan (K.K.)
| | - Francis G. Spinale
- From the Department of Cardiovascular Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan (K.S., K.S., S.I., S.S., T.O., T.S., N.K., J.O., R.K., M.N., K.N., K.S., T.A., S.T., H.S.); Division of Cardiothoracic Surgery, Medical University of South Carolina, Charleston (R.M.); Department of Cell Biology and Anatomy, University of South Carolina School of Medicine, Columbia (F.G.S.); and Department of Biochemistry, Nagoya University Graduate School of Medicine, Nagoya, Japan (K.K.)
| | - Kenji Kadomatsu
- From the Department of Cardiovascular Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan (K.S., K.S., S.I., S.S., T.O., T.S., N.K., J.O., R.K., M.N., K.N., K.S., T.A., S.T., H.S.); Division of Cardiothoracic Surgery, Medical University of South Carolina, Charleston (R.M.); Department of Cell Biology and Anatomy, University of South Carolina School of Medicine, Columbia (F.G.S.); and Department of Biochemistry, Nagoya University Graduate School of Medicine, Nagoya, Japan (K.K.)
| | - Hiroaki Shimokawa
- From the Department of Cardiovascular Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan (K.S., K.S., S.I., S.S., T.O., T.S., N.K., J.O., R.K., M.N., K.N., K.S., T.A., S.T., H.S.); Division of Cardiothoracic Surgery, Medical University of South Carolina, Charleston (R.M.); Department of Cell Biology and Anatomy, University of South Carolina School of Medicine, Columbia (F.G.S.); and Department of Biochemistry, Nagoya University Graduate School of Medicine, Nagoya, Japan (K.K.)
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SIRT1 inhibits differentiation of monocytes to macrophages: amelioration of synovial inflammation in rheumatoid arthritis. J Mol Med (Berl) 2016; 94:921-31. [DOI: 10.1007/s00109-016-1402-7] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2015] [Revised: 02/15/2016] [Accepted: 02/23/2016] [Indexed: 12/15/2022]
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Liu C, Zhang R, Sun C, Zhang H, Xu C, Liu W, Gao W, Huang S, Chen L. Resveratrol prevents cadmium activation of Erk1/2 and JNK pathways from neuronal cell death via protein phosphatases 2A and 5. J Neurochem 2015; 135:466-78. [PMID: 26146868 DOI: 10.1111/jnc.13233] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2015] [Revised: 06/17/2015] [Accepted: 06/26/2015] [Indexed: 01/19/2023]
Abstract
Cadmium (Cd), a toxic environmental contaminant, induces neurodegenerative disorders. Resveratrol, a natural product, has been found to exert neuroprotective effects. However, little is known regarding the effect of resveratrol on Cd-evoked neurotoxicity. Here, we show that resveratrol effectively reversed Cd-elicited cell viability reduction, morphological change, nuclear fragmentation and condensation, as well as activation of caspase-3 in neuronal cells, implying neuroprotection against Cd-poisoning by resveratrol. Further research revealed that both c-Jun N-terminal kinase (JNK) and extracellular signal-regulated kinases 1/2 (Erk1/2) were involved in the inhibitory effect of resveratrol on Cd-induced cell death, as selective inhibitors of Erk1/2 (U0126) and JNK (SP600125), or over-expression of dominant negative mitogen-activated protein kinase kinase 1 (MKK1) or dominant negative c-Jun potentiated resveratrol's prevention of Cd-induced phosphorylation of JNK and Erk1/2, as well as cell death in neuronal cells. Interestingly, resveratrol potently rescued the cells from Cd-induced suppression of protein phosphatases 2A (PP2A) and 5 (PP5) activity. Over-expression of PP2A or PP5 strengthened the inhibitory effects of resveratrol on Cd-induced activation of Erk1/2 and/or JNK, as well as cell death. The results indicate that resveratrol prevents Cd-induced activation of Erk1/2 and JNK pathways and neuronal cell death in part via activating PP2A and PP5. Our findings strongly support the notion that resveratrol may serve as a potential therapeutic agent in the prevention of Cd-induced neurodegenerative diseases.
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Affiliation(s)
- Chunxiao Liu
- Jiangsu Key Laboratory for Molecular and Medical Biotechnology, Jiangsu Key Laboratory for Microbes and Functional Genomics, College of Life Sciences, Nanjing Normal University, Nanjing, China
| | - Ruijie Zhang
- Jiangsu Key Laboratory for Molecular and Medical Biotechnology, Jiangsu Key Laboratory for Microbes and Functional Genomics, College of Life Sciences, Nanjing Normal University, Nanjing, China
| | - Chenxia Sun
- Jiangsu Key Laboratory for Molecular and Medical Biotechnology, Jiangsu Key Laboratory for Microbes and Functional Genomics, College of Life Sciences, Nanjing Normal University, Nanjing, China
| | - Hai Zhang
- Jiangsu Key Laboratory for Molecular and Medical Biotechnology, Jiangsu Key Laboratory for Microbes and Functional Genomics, College of Life Sciences, Nanjing Normal University, Nanjing, China
| | - Chong Xu
- Jiangsu Key Laboratory for Molecular and Medical Biotechnology, Jiangsu Key Laboratory for Microbes and Functional Genomics, College of Life Sciences, Nanjing Normal University, Nanjing, China
| | - Wen Liu
- Jiangsu Key Laboratory for Molecular and Medical Biotechnology, Jiangsu Key Laboratory for Microbes and Functional Genomics, College of Life Sciences, Nanjing Normal University, Nanjing, China
| | - Wei Gao
- Jiangsu Key Laboratory for Molecular and Medical Biotechnology, Jiangsu Key Laboratory for Microbes and Functional Genomics, College of Life Sciences, Nanjing Normal University, Nanjing, China
| | - Shile Huang
- Department of Biochemistry and Molecular Biology, Louisiana State University Health Sciences Center, Shreveport, Louisiana, USA.,Feist-Weiller Cancer Center, Louisiana State University Health Sciences Center, Shreveport, Louisiana, USA
| | - Long Chen
- Jiangsu Key Laboratory for Molecular and Medical Biotechnology, Jiangsu Key Laboratory for Microbes and Functional Genomics, College of Life Sciences, Nanjing Normal University, Nanjing, China
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Huang Z, Han Z, Ye B, Dai Z, Shan P, Lu Z, Dai K, Wang C, Huang W. Berberine alleviates cardiac ischemia/reperfusion injury by inhibiting excessive autophagy in cardiomyocytes. Eur J Pharmacol 2015; 762:1-10. [DOI: 10.1016/j.ejphar.2015.05.028] [Citation(s) in RCA: 94] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2015] [Accepted: 05/18/2015] [Indexed: 01/12/2023]
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Huang Z, Ye B, Dai Z, Wu X, Lu Z, Shan P, Huang W. Curcumin inhibits autophagy and apoptosis in hypoxia/reoxygenation-induced myocytes. Mol Med Rep 2015; 11:4678-84. [PMID: 25673156 DOI: 10.3892/mmr.2015.3322] [Citation(s) in RCA: 58] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2014] [Accepted: 12/02/2014] [Indexed: 11/05/2022] Open
Abstract
Primary percutaneous coronary intervention, or thombolytic therapy, provides effective myocardial blood reconstruction in patients with acute myocardial infarction to reduce acute myocardial ischemic injury. However, reperfusion can itself induce cardiomyocyte death, termed myocardial reperfusion injury (I/R). Hypoxia/reoxygenation (H/R) induces apoptosis and excessive autophagy among cardiomyocytes, leading to cell death. The present study investigated the effect of curcumin, a natural extract from Curcuma longa, on these two cellular processes in H9c2 myocytes. The levels of cellular apoptosis and autophagy were found to be upregulated in the H9c2 myocytes during H/R and were correlated with a reduced rate of cell survival. However, curcumin significantly suppressed the levels of H/R‑induced apoptosis (expression of annexin V) and autophagy (LC3B‑II/LC3B‑I ratio) in the H9c2 myocytes and promoted cell survival. Additionally, the expression of B‑cell lymphoma 2 (Bcl‑2) was significantly downregulated and the expression levels of Bcl‑2‑associated X protein, beclin‑1, Bcl‑2/adenovirus E1B 19 kDa interacting protein 3 (BNIP3) and silent information regulation 1 (SIRT1) were significantly upregulated in myocytes following H/R injury. These effects on the expression of these proteins were reversed by curcumin treatment. These findings suggested that the protective effect of curcumin against H/R injury in the H9c2 myocytes was through the inhibition of apoptosis and autophagy by inducing the expression of Bcl‑2 and inhibiting the expression levels of Bax, beclin‑1, BNIP3 and SIRT1. Therefore, curcumin may offer a promising therapeutic approach for the treatment of cardiomyocyte injury resulting from I/R.
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Affiliation(s)
- Zhouqing Huang
- Department of Cardiology, The Key Laboratory of Cardiovascular Disease of Wenzhou, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, P.R. China
| | - Bozhi Ye
- Department of Cardiology, The Key Laboratory of Cardiovascular Disease of Wenzhou, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, P.R. China
| | - Zhenyu Dai
- Department of Cardiology, The Key Laboratory of Cardiovascular Disease of Wenzhou, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, P.R. China
| | - Xinlei Wu
- Department of Cardiology, The Key Laboratory of Cardiovascular Disease of Wenzhou, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, P.R. China
| | - Zhongqiu Lu
- Department of Emergency, The Key Laboratory of Cardiovascular Disease of Wenzhou, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, P.R. China
| | - Peiren Shan
- Department of Cardiology, The Key Laboratory of Cardiovascular Disease of Wenzhou, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, P.R. China
| | - Weijian Huang
- Department of Cardiology, The Key Laboratory of Cardiovascular Disease of Wenzhou, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, P.R. China
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Ge H, Yuan W, Liu J, He Q, Ding S, Pu J, He B. Functional relevance of protein glycosylation to the pro-inflammatory effects of extracellular matrix metalloproteinase inducer (EMMPRIN) on monocytes/macrophages. PLoS One 2015; 10:e0117463. [PMID: 25658763 PMCID: PMC4319903 DOI: 10.1371/journal.pone.0117463] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2014] [Accepted: 12/23/2014] [Indexed: 11/20/2022] Open
Abstract
BACKGROUND AND OBJECTIVE Extracellular matrix metalloproteinase inducer (EMMPRIN) is an important pro-inflammatory protein involved in the cellular functions of monocytes/macrophages. We have hypothesized that high-level heterogeneousness of protein glycosylation of EMMPRIN may have functional relevance to its biological effects and affect the inflammatory activity of monocytes/macrophages. METHODS The glycosylation patterns of EMMPRIN expressed by monocytes/macrophages (THP-1 cells) in response to different extracellular stimuli were observed, and the structures of different glycosylation forms were identified. After the purification of highly- and less-glycosylated proteins respectively, the impacts of different glycosylation forms on the pro-inflammatory effects of EMMPRIN were examined in various aspects, such as cell adhesion to endothelial cells, cell migrations, cytokine expression, and activation of inflammatory signalling pathway. RESULTS 1) It was mainly the highly-glycosylated form of EMMPRIN (HG-EMMPRIN) that increased after being exposed to inflammatory signals (PMA and H2O2). 2) Glycosylation of EMMPRIN in monocytes/macrophages led to N-linked-glycans being added to the protein, with the HG form containing complex-type glycans and the less-glycosylated form (LG) the simple type. 3) Only the HG-EMMPRIN but not the LG-EMMPRIN exhibited pro-inflammatory effects and stimulated inflammatory activities of the monocytes/macrophages (i.e., activation of ERK1/2 and NF-κB pathway, enhanced monocyte-endothelium adhesion, cell migration and matrix metalloproteinase -9 expression). CONCLUSIONS Post-transcriptional glycosylation represents an important mechanism that determines the biological effects of EMMPRIN in monocytes/macrophages. Glycosylation of EMMPRIN may serve as a potential target for regulating the inflammatory activities of monocytes/macrophages.
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Affiliation(s)
- Heng Ge
- Department of Cardiology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Wei Yuan
- Department of Cardiology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Jidong Liu
- Department of Cardiac Surgery, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Qing He
- Department of Cardiology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Song Ding
- Department of Cardiology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Jun Pu
- Department of Cardiology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Ben He
- Department of Cardiology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
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Wang C, Jin R, Zhu X, Yan J, Li G. Function of CD147 in atherosclerosis and atherothrombosis. J Cardiovasc Transl Res 2015; 8:59-66. [PMID: 25604960 DOI: 10.1007/s12265-015-9608-6] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/07/2014] [Accepted: 01/08/2015] [Indexed: 12/28/2022]
Abstract
CD147, a member of the immunoglobulin super family, is a well-known potent inducer of extracellular matrix metalloproteinases. Studies show that CD147 is upregulated in inflammatory diseases. Atherosclerosis is a chronic inflammatory disease of the artery wall. Further understanding of the functions of CD147 in atherosclerosis and atherothrombosis may provide a new strategy for preventing and treating cardiovascular disease. In this review, we discuss how CD147 contributes to atherosclerosis and atherothrombosis.
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Affiliation(s)
- Cuiping Wang
- Department of Cardiology, Affiliated Hospital of Jiangsu University, Zhenjiang, Jiangsu province, People's Republic of China, 212001
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Functional role of EMMPRIN in the formation and mineralisation of dental matrix in mouse molars. J Mol Histol 2014; 46:21-32. [PMID: 25501684 DOI: 10.1007/s10735-014-9603-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2014] [Accepted: 12/08/2014] [Indexed: 12/11/2022]
Abstract
Our previous research has shown that the extracellular matrix metalloproteinase inducer (EMMPRIN) is expressed during and may function in the early development of tooth germs. In the present study, we observed the specific expression of EMMPRIN in ameloblasts and odontoblasts during the middle and late stages of tooth germ development using immunohistochemistry. Furthermore, to extend our understanding of the function of EMMPRIN in odontogenesis, we used an anti-EMMPRIN function-blocking antibody to remove EMMPRIN activity in tooth germ culture in vitro. Both the formation and mineralisation of dental hard tissues were suppressed in the tooth germ culture after the abrogation of EMMPRIN. Meanwhile, significant reductions in VEGF, MMP-9, ALPL, ameloblastin, amelogenin and enamelin expression were observed in antibody-treated tooth germ explants compared to control and normal serum-treated explants. The current results illustrate that EMMPRIN may play a critical role in the processing and maturation of the dental matrix.
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Cao J, Han Z, Tian L, Chen K, Fan Y, Ye B, Huang W, Wang C, Huang Z. Curcumin inhibits EMMPRIN and MMP-9 expression through AMPK-MAPK and PKC signaling in PMA induced macrophages. J Transl Med 2014; 12:266. [PMID: 25241044 PMCID: PMC4205290 DOI: 10.1186/s12967-014-0266-2] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2014] [Accepted: 09/16/2014] [Indexed: 02/06/2023] Open
Abstract
In coronary arteries, plaque disruption, the major acute clinical manifestations of atherosclerosis, leads to a subsequent cardiac event, such as acute myocardial infarction (AMI) and unstable angina pectoris (UA). Numerous reports have shown that high expression of MMP-9 (matrix metalloproteinase-9), MMP-13 (matrix metalloproteinase-13) and EMMPRIN (extracellular matrix metalloproteinase induce) in monocyte/macrophage results in the plaque progression and destabilization. Curcumin exerts well-known anti-inflammatory and antioxidant effects and probably has a protective role in the atherosclerosis. The purpose of our study was to investigate the molecular mechanisms by which curcumin affects MMP-9, MMP13 and EMMPRIN in PMA (phorbol 12-myristate 13-acetate) induced macrophages. Human monocytic cells (THP-1 cells) were pretreated with curcumin or compound C for 1 h, and then induced by PMA for 48 h. Total RNA and proteins were collected for real-time PCR and Western blot analysis, respectively. In the present study, the exposure to curcumin resulted in attenuated JNK, p38, and ERK activation and decreased expression of MMP-9, MMP-13 and EMMPRIN in PMA induced macrophages. Moreover, we demonstrated that AMPK (AMP-activated protein kinase) and PKC (Protein Kinase C) was activated by PMA during monocyte/macrophage differentiation. Furthermore, curcumin reversed PMA stimulated PKC activation and suppressed the chronic activation of AMPK, which in turn reduced the expression of MMP-9, MMP-13 and EMMPRIN. Therefore, it is suggested that curcumin by inhibiting AMPK-MAPK (mitogen activated protein kinase) and PKC pathway may led to down-regulated EMMPRIN, MMP-9 and MMP-13 expression in PMA-induced THP-1 cells.
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Joghetaei N, Stein A, Byrne RA, Schulz C, King L, May AE, Schmidt R. The Extracellular Matrix Metalloproteinase Inducer (EMMPRIN, CD147) - a potential novel target in atherothrombosis prevention? Thromb Res 2013; 131:474-80. [DOI: 10.1016/j.thromres.2013.04.017] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2013] [Revised: 04/10/2013] [Accepted: 04/16/2013] [Indexed: 11/17/2022]
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Tien CL, Lin CH, Lin TH, Wen FC, Su CW, Fan SS, Hsieh M. Secreted cyclophilin A induction during embryo implantation in a model of human trophoblast–endometrial epithelium interaction. Eur J Obstet Gynecol Reprod Biol 2012; 164:55-9. [DOI: 10.1016/j.ejogrb.2012.05.027] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2011] [Revised: 03/22/2012] [Accepted: 05/12/2012] [Indexed: 11/24/2022]
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Zong Y, Sun L, Liu B, Deng YS, Zhan D, Chen YL, He Y, Liu J, Zhang ZJ, Sun J, Lu D. Resveratrol inhibits LPS-induced MAPKs activation via activation of the phosphatidylinositol 3-kinase pathway in murine RAW 264.7 macrophage cells. PLoS One 2012; 7:e44107. [PMID: 22952890 PMCID: PMC3432093 DOI: 10.1371/journal.pone.0044107] [Citation(s) in RCA: 115] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2012] [Accepted: 07/30/2012] [Indexed: 11/18/2022] Open
Abstract
Background Resveratrol is a natural polyphenolic compound that has cardioprotective, anticancer and anti-inflammatory properties. We investigated the capacity of resveratrol to protect RAW 264.7 cells from inflammatory insults and explored mechanisms underlying inhibitory effects of resveratrol on RAW 264.7 cells. Methodology/Principal Findings Murine RAW 264.7 cells were treated with resveratrol (1, 5, and 10 µM) and/or LPS (5 µg/ml). Nitric oxide (NO) and prostaglandin E2 (PGE2) were measured by Griess reagent and ELISA. The mRNA and protein levels of proinflammatory proteins and cytokines were analysed by ELISA, RT-PCR and double immunofluorescence labeling, respectively. Phosphorylation levels of Akt, cyclic AMP-responsive element-binding protein (CREB), mitogen-activated protein kinases (MAPKs) cascades, AMP-activated protein kinase (AMPK) and expression of SIRT1(Silent information regulator T1) were measured by western blot. Wortmannin (1 µM), a specific phosphatidylinositol 3-kinase (PI3-K) inhibitor, was used to determine if PI3-K/Akt signaling pathway might be involved in resveratrol’s action on RAW 264.7 cells. Resveratrol significantly attenuated the LPS-induced expression of nitric oxide (NO), prostaglandin E2 (PGE2), inducible nitric oxide synthase (iNOS), cyclooxygenase-2 (COX-2), tumor necrosis factor-α (TNF-α) and interleukin-1β (IL-1β) in RAW 264.7 cells. Resveratrol increased Akt phosphorylation in a time-dependent manner. Wortmannin, a specific phosphatidylinositol 3-kinase (PI3-K) inhibitor, blocked the effects of resveratrol on LPS-induced RAW 264.7 cells activation. In addition, PI3-K inhibition partially abolished the inhibitory effect of resveratrol on the phosphorylation of cyclic AMP-responsive element-binding protein (CREB) and mitogen-activated protein kinases (MAPKs) cascades. Meanwhile, PI3-K is essential for resveratrol-mediated phosphorylation of AMPK and expression of SIRT1. Conclusion and Implications This investigation demonstrates that PI3-K/Akt activation is an important signaling in resveratrol-mediated activation of AMPK phosphorylation and SIRT1 expression, and inhibition of phosphorylation of CREB and MAPKs activation, proinflammatory mediators and cytokines production in response to LPS in RAW 264.7 cells.
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Affiliation(s)
- Yi Zong
- Department of Anatomy, Kunming Medical University, Kunming, Yunnan, People’s Republic of China
| | - Lin Sun
- Department of Cardiology, The Second Affiliated Hospital, Kunming Medical University, Kunming, Yunnan, People’s Republic of China
| | - Bin Liu
- Department of Spine Surgery, The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, People’s Republic of China
| | - Yi-Shu Deng
- Department of Respiratory Medicine, The Third People’s of Yunnan Province, Kunming, Yunnan, People’s Republic of China
| | - Dong Zhan
- Department of Anatomy, Kunming Medical University, Kunming, Yunnan, People’s Republic of China
| | - Yuan-Li Chen
- Department of Anatomy, Kunming Medical University, Kunming, Yunnan, People’s Republic of China
| | - Ying He
- Department of Anatomy, Kunming Medical University, Kunming, Yunnan, People’s Republic of China
| | - Jing Liu
- Department of Pathology, Kunming Medical University, Kunming, Yunnan, People’s Republic of China
| | - Zong-Ji Zhang
- Department of Pathology, Kunming Medical University, Kunming, Yunnan, People’s Republic of China
- * E-mail: (DL); (JS); (ZJZ)
| | - Jun Sun
- Department of Anatomy, Kunming Medical University, Kunming, Yunnan, People’s Republic of China
- * E-mail: (DL); (JS); (ZJZ)
| | - Di Lu
- Department of Anatomy, Kunming Medical University, Kunming, Yunnan, People’s Republic of China
- * E-mail: (DL); (JS); (ZJZ)
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Berberine-induced inhibition of adipocyte enhancer-binding protein 1 attenuates oxidized low-density lipoprotein accumulation and foam cell formation in phorbol 12-myristate 13-acetate-induced macrophages. Eur J Pharmacol 2012; 690:164-9. [PMID: 22796454 DOI: 10.1016/j.ejphar.2012.07.009] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2012] [Revised: 06/23/2012] [Accepted: 07/02/2012] [Indexed: 11/20/2022]
Abstract
The phagocytosis of oxidized low-density lipoprotein (oxLDL) by monocyte-derived macrophages and the subsequent differentiation of macrophages into foam cells are the key steps in atherogenesis. Scavenger receptors, such as CD36 and lectin-like low-density lipoprotein receptor 1 (LOX-1), are responsible for the uptake of oxLDL. Adipocyte enhancer-binding protein 1 (AEBP1) regulates many key genes associated with intracellular cholesterol efflux. The present study investigated the function of berberine, a compound isolated from Rhizoma coptidis, on foam cell formation, and explored the possible underlying mechanism. We found that berberine inhibited the oxLDL uptake of macrophages and reduced foam cell formation in a dose-dependent manner. Moreover, AEBP1 expression in macrophages increased and decreased after oxLDL and berberine treatments in a dose-dependent manner, respectively. Berberine reduced the expression of scavenger receptors CD36 and LOX-1, but did not affect the expression of CD68 in oxLDL-stimulated macrophages. Overall, berberine reduced foam cell formation by a dual mechanism, which decreased oxLDL internalization via the suppression of CD36 and LOX-1, and increased cholesterol efflux by inhibiting AEBP1 expression in macrophages.
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Shakibaei M, Shayan P, Busch F, Aldinger C, Buhrmann C, Lueders C, Mobasheri A. Resveratrol mediated modulation of Sirt-1/Runx2 promotes osteogenic differentiation of mesenchymal stem cells: potential role of Runx2 deacetylation. PLoS One 2012; 7:e35712. [PMID: 22539994 PMCID: PMC3335081 DOI: 10.1371/journal.pone.0035712] [Citation(s) in RCA: 171] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2012] [Accepted: 03/20/2012] [Indexed: 01/13/2023] Open
Abstract
Objective Osteogenic repair in response to bone injury is characterized by activation and differentiation of mesenchymal stem cells (MSCs) to osteoblasts. This study determined whether activation of Sirt-1 (a NAD+-dependent histone deacetylase) by the phytoestrogen resveratrol affects osteogenic differentiation. Methods Monolayer and high-density cultures of MSCs and pre-osteoblastic cells were treated with an osteogenic induction medium with/without the Sirt-1 inhibitor nicotinamide or/and resveratrol in a concentration dependent manner. Results MSCs and pre-osteoblastic cells differentiated to osteoblasts when exposed to osteogenic-induction medium. The osteogenic response was blocked by nicotinamide, resulting in adipogenic differentiation and expression of the adipose transcription regulator PPAR-γ (peroxisome proliferator-activated receptor). However, in nicotinamide-treated cultures, pre-treatment with resveratrol significantly enhanced osteogenesis by increasing expression of Runx2 (bone specific transcription factor) and decreasing expression of PPAR-γ. Activation of Sirt-1 by resveratrol in MSCs increased its binding to PPAR-γ and repressed PPAR-γ activity by involving its cofactor NCoR (nuclear receptor co-repressor). The modulatory effects of resveratrol on nicotinamide-induced expression of PPAR-γ and its cofactor NCoR were found to be mediated, at least in part, by Sirt-1/Runx2 association and deacetylation of Runx2. Finally, knockdown of Sirt-1 by using antisense oligonucleotides downregulated the expression of Sirt-1 protein and abolished the inhibitory effects of resveratrol, namely nicotinamide-induced Sirt-1 suppression and Runx2 acetylation, suggesting that the acetylated content of Runx2 is related to downregulated Sirt-1 expression. Conclusion These data support a critical role for Runx2 acetylation/deacetylation during osteogenic differentiation in MSCs in vitro. (242 words in abstract)
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Affiliation(s)
- Mehdi Shakibaei
- Institute of Anatomy, Ludwig-Maximilian-University Munich, Munich, Germany.
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Enhanced anti-inflammatory effect of resveratrol and EPA in treated endotoxin-activated RAW 264.7 macrophages. Br J Nutr 2012; 108:1562-73. [DOI: 10.1017/s0007114511007057] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Macrophages play an important role in immunogenic challenges by producing reactive oxygen species, NO and proinflammatory cytokines that can aggravate and propagate local inflammation. Multiple mechanisms regulate these inflammatory processes. NF-κB and activator protein 1 pathways are crucial in the expression of proinflammatory genes, such as TNF-α, IL-1 (α or β) and -6. Some polyphenols, which are present in beverages, vegetables and fruits, and PUFA, which are present in marine oils and fish food, possess anti-inflammatory effects in vivo and in vitro. Our aim in the present study was to assess whether polyphenols and PUFA have synergistic anti-inflammatory effects in murine macrophages in vitro. Inflammation in RAW 264.7 macrophages was induced by lipopolysaccharide at 100 ng/ml. The treatments with molecules were performed by co-incubation for 19 h. A NO production assay by Griess reaction, a phosphoprotein assay by Pathscan ELISA kit and gene expression analysis using the TaqMan® Low-density Array for ninety-one genes related to inflammation, oxidative stress and metabolism were performed to assess the synergistic anti-inflammatory effects of polyphenols, epigallocatechin gallate and resveratrol (Res; 2·5 μg/ml), and the PUFA, DHA and EPA (30 μm). Adding Res+EPA had an enhanced anti-inflammatory effect, in comparison with EPA and Res alone, leading to decreased NO levels; modulating the phospho-stress activated protein kinase/Jun N-terminal kinase (P-SAPK/JNK) level; down-regulating proinflammatory genes, such as IL, chemokines, transcription factors; and up-regulating several antioxidant genes. Therefore, this combination has a stronger anti-inflammatory effect than either of these molecules separately in RAW macrophages.
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Huang Z, Meng S, Wang L, Wang Y, Chen T, Wang C. Suppression of oxLDL-induced MMP-9 and EMMPRIN expression by berberine via inhibition of NF-κB activation in human THP-1 macrophages. Anat Rec (Hoboken) 2011; 295:78-86. [PMID: 22140092 DOI: 10.1002/ar.21489] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2010] [Accepted: 08/20/2011] [Indexed: 01/07/2023]
Abstract
Upregulation of matrix metalloproteinases (MMPs) and extracellular matrix metalloproteinase inducer (EMMPRIN) by macrophages leads to atherosclerotic plaque rupture by degradation of the extracellular matrix. NF-κB activation regulates many key inflammatory genes linked to atherosclerosis. In the present study, the function of berberine, a natural extract from Rhizoma coptidis, on MMP-9 and EMMPRIN expression, the role of NF-κB activation in oxLDL-stimulated macrophages, and the possible mechanism in which NF-κB activation is involved were investigated. Berberine inhibited the expression of MMP-9 and EMMPRIN at both mRNA and protein levels. The phosphorylation of IκB-α and nuclear translocation of p65 protein were reduced by berberine, suggesting that NF-κB activation was inhibited by berberine in oxLDL-stimulated macrophages. Overall, berberine suppressed the expression of MMP-9 and EMMPRIN by at least reducing partly the activity of NF-κB in oxLDL-induced macrophages.
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Affiliation(s)
- Zhouqing Huang
- Department of Cardiology, First Affiliated Hospital, Wenzhou Medical College, China
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Dai L, Bratoeva M, Toole BP, Qin Z, Parsons C. KSHV activation of VEGF secretion and invasion for endothelial cells is mediated through viral upregulation of emmprin-induced signal transduction. Int J Cancer 2011; 131:834-43. [PMID: 21918972 DOI: 10.1002/ijc.26428] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2011] [Accepted: 08/29/2011] [Indexed: 11/08/2022]
Abstract
Kaposi's sarcoma-associated herpesvirus (KSHV) is the etiologic agent of Kaposi's sarcoma (KS)-one of the most common tumors arising in the setting of immune suppression. Hallmarks of KS lesions include KSHV-infected cells of endothelial lineage and neoangiogenesis. Promigratory factors secreted in the tumor microenvironment by KSHV-infected cells promote endothelial cell (EC) migration and angiogenesis but existing therapies targeting these pathways are not widely utilized. This underscores the need for additional characterization of KSHV-host interactions relevant to EC pathogenesis to identify new therapeutic targets. We recently demonstrated that de novo infection by KSHV promotes EC invasion through upregulation of extracellular matrix metalloproteinase inducer (emmprin)-a multifunctional glycoprotein previously shown to induce tumor cell invasion and regional angiogenesis through upregulation of signal transduction and promotion of tumor-stroma interactions. This study was undertaken to determine whether EC invasion for KSHV-infected cells is induced through activation of specific signal transduction pathways and proangiogenic factors by emmprin. We found that KSHV activation of emmprin induces PI3K/Akt- and mitogen-activated protein kinase (MAPK)-dependent secretion of vascular endothelial growth factor (VEGF). Functionally, EC invasion following de novo infection is induced by emmprin-dependent PI3K/Akt and MAPK activation of VEGF. These findings support the potential utility of targeting emmprin for reducing VEGF secretion and EC migration in the KS microenvironment.
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Affiliation(s)
- Lu Dai
- Department of Regenerative Medicine & Cell Biology, Medical University of South Carolina, Charleston, SC, USA
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Fan Y, Wang J, Wei L, He B, Wang C, Wang B. Iron deficiency activates pro-inflammatory signaling in macrophages and foam cells via the p38 MAPK-NF-κB pathway. Int J Cardiol 2011; 152:49-55. [DOI: 10.1016/j.ijcard.2010.07.005] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/06/2010] [Revised: 05/18/2010] [Accepted: 07/02/2010] [Indexed: 01/19/2023]
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González R, Ballester I, López-Posadas R, Suárez MD, Zarzuelo A, Martínez-Augustin O, Sánchez de Medina F. Effects of flavonoids and other polyphenols on inflammation. Crit Rev Food Sci Nutr 2011; 51:331-62. [PMID: 21432698 DOI: 10.1080/10408390903584094] [Citation(s) in RCA: 357] [Impact Index Per Article: 27.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Flavonoids are a family of polyphenolic compounds which are widespread in nature (vegetables) and are consumed as part of the human diet in significant amounts. There are other types of polyphenols, including, for example, tannins and resveratrol. Flavonoids and related polyphenolic compounds have significant antiinflammatory activity, among others. This short review summarizes the current knowledge on the effects of flavonoids and related polyphenolic compounds on inflammation, with a focus on structural requirements, the mechanisms involved, and pharmacokinetic considerations. Different molecular (cyclooxygenase, lipoxygenase) and cellular targets (macrophages, lymphocytes, epithelial cells, endothelium) have been identified. In addition, many flavonoids display significant antioxidant/radical scavenging properties. There is substantial structural variation in these compounds, which is bound to have an impact on their biological profile, and specifically on their effects on inflammatory conditions. However, in general terms there is substantial consistency in the effects of these compounds despite considerable structural variations. The mechanisms have been studied mainly in myeloid cells, where the predominant effect is an inhibition of NF-κB signaling and the downregulation of the expression of proinflammatory markers. At present there is a gap in knowledge of in vitro and in vivo effects, although the pharmacokinetics of flavonoids has advanced considerably in the last decade. Many flavonoids have been studied for their intestinal antiinflammatory activity which is only logical, since the gastrointestinal tract is naturally exposed to them. However, their potential therapeutic application in inflammation is not restricted to this organ and extends to other sites and conditions, including arthritis, asthma, encephalomyelitis, and atherosclerosis, among others.
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Affiliation(s)
- R González
- Department of Pharmacology, CIBERehd, School of Pharmacy, University of Granada, Granada, Spain
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Lee YM, Shin SI, Shin KS, Lee YR, Park BH, Kim EC. The role of sirtuin 1 in osteoblastic differentiation in human periodontal ligament cells. J Periodontal Res 2011; 46:712-21. [DOI: 10.1111/j.1600-0765.2011.01394.x] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Utreras E, Terse A, Keller J, Iadarola MJ, Kulkarni AB. Resveratrol inhibits Cdk5 activity through regulation of p35 expression. Mol Pain 2011; 7:49. [PMID: 21736731 PMCID: PMC3212955 DOI: 10.1186/1744-8069-7-49] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2011] [Accepted: 07/07/2011] [Indexed: 02/03/2023] Open
Abstract
Background We have previously reported that cyclin-dependent kinase 5 (Cdk5) participates in the regulation of nociceptive signaling. Through activation of the ERK1/2 pathway, Tumor Necrosis Factor-α (TNF-α) induces expression of Egr-1. This results in the sustained and robust expression of p35, a coactivator of Cdk5, in PC12 cells, thereby increasing Cdk5 kinase activity. The aim of our present study was to test whether resveratrol, a polyphenolic compound with known analgesic activity, can regulate Cdk5/p35 activity. Results Here we used a cell-based assay in which a p35 promoter-luciferase construct was stably transfected in PC12 cells. Our studies demonstrate that resveratrol inhibits p35 promoter activity and also blocks the TNF-α mediated increase in Cdk5 activity in PC12 cells. Resveratrol also inhibits p35 expression and blocks the TNF-α mediated increase in Cdk5 activity in DRG neurons. In the presence of resveratrol, the MEK inhibitor decreased p35 promoter activity, whereas the inhibitors of p38 MAPK, JNK and NF-κB increased p35 promoter activity, indicating that these pathways regulate p35 expression differently. The TNF-α-mediated increase in Egr-1 expression was decreased by resveratrol treatment with a concomitant reduction in p35 expression and protein levels, resulting in reduced Cdk5 kinase activity. Conclusions We demonstrate here that resveratrol regulates p35 promoter activity in PC12 cells and DRG neurons. Most importantly, resveratrol blocks the TNF-α-mediated increase in p35 promoter activity, thereby reducing p35 expression and subsequent Cdk5 kinase activity. This new molecular mechanism adds to the known analgesic effects of resveratrol and confirms the need for identifying new analgesics based on their ability to inhibit Cdk5 activity for effective treatment of pain.
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Affiliation(s)
- Elias Utreras
- Functional Genomic Section, Laboratory of Cell and Developmental Biology, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD 20892, USA
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Bell L, Chowdhary R, Liu JS, Niu X, Zhang J. Integrated bio-entity network: a system for biological knowledge discovery. PLoS One 2011; 6:e21474. [PMID: 21738677 PMCID: PMC3124513 DOI: 10.1371/journal.pone.0021474] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2011] [Accepted: 06/01/2011] [Indexed: 01/26/2023] Open
Abstract
A significant part of our biological knowledge is centered on relationships between biological entities (bio-entities) such as proteins, genes, small molecules, pathways, gene ontology (GO) terms and diseases. Accumulated at an increasing speed, the information on bio-entity relationships is archived in different forms at scattered places. Most of such information is buried in scientific literature as unstructured text. Organizing heterogeneous information in a structured form not only facilitates study of biological systems using integrative approaches, but also allows discovery of new knowledge in an automatic and systematic way. In this study, we performed a large scale integration of bio-entity relationship information from both databases containing manually annotated, structured information and automatic information extraction of unstructured text in scientific literature. The relationship information we integrated in this study includes protein–protein interactions, protein/gene regulations, protein–small molecule interactions, protein–GO relationships, protein–pathway relationships, and pathway–disease relationships. The relationship information is organized in a graph data structure, named integrated bio-entity network (IBN), where the vertices are the bio-entities and edges represent their relationships. Under this framework, graph theoretic algorithms can be designed to perform various knowledge discovery tasks. We designed breadth-first search with pruning (BFSP) and most probable path (MPP) algorithms to automatically generate hypotheses—the indirect relationships with high probabilities in the network. We show that IBN can be used to generate plausible hypotheses, which not only help to better understand the complex interactions in biological systems, but also provide guidance for experimental designs.
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Affiliation(s)
- Lindsey Bell
- Department of Statistics, Florida State University, Tallahassee, Florida, United States of America
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Qin Z, Dai L, Bratoeva M, Slomiany MG, Toole BP, Parsons C. Cooperative roles for emmprin and LYVE-1 in the regulation of chemoresistance for primary effusion lymphoma. Leukemia 2011; 25:1598-609. [PMID: 21660043 DOI: 10.1038/leu.2011.144] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The Kaposi's sarcoma-associated herpesvirus is the causative agent of primary effusion lymphoma (PEL), for which cytotoxic chemotherapy represents the standard of care. The high mortality associated with PEL may be explained in part by resistance of these tumors to chemotherapy. The membrane-bound glycoprotein emmprin (CD147) enhances chemoresistance in tumors through effects on transporter expression, trafficking and interactions. Interactions between hyaluronan and hyaluronan receptors on the cell surface also facilitate emmprin-mediated chemoresistance. Whether emmprin or hyaluronan-receptor interactions regulate chemotherapeutic resistance for virus-associated malignancies is unknown. Using human PEL tumor cells, we found that PEL sensitivity to chemotherapy is directly proportional to expression of emmprin, the lymphatic vessel endothelial hyaluronan receptor-1 (LYVE-1) and a drug transporter known as the breast cancer resistance protein/ABCG2 (BCRP), and that emmprin, LYVE-1 and BCRP interact with each other and colocalize on the PEL cell surface. In addition, we found that emmprin induces chemoresistance in PEL cells through upregulation of BCRP expression, and RNA interference targeting of emmprin, LYVE-1 or BCRP enhances PEL cell apoptosis induced by chemotherapy. Finally, disruption of hyaluronan-receptor interactions using small hyaluronan oligosaccharides reduces expression of emmprin and BCRP while sensitizing PEL cells to chemotherapy. Collectively, these data support interdependent roles for emmprin, LYVE-1 and BCRP in chemotherapeutic resistance for PEL.
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Affiliation(s)
- Z Qin
- Department of Medicine, Hollings Cancer Center, Medical University of South Carolina, Charleston, SC 29425, USA
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Wang Y, Huang ZQ, Wang CQ, Wang LS, Meng S, Zhang YC, Chen T, Fan YQ. Artemisinin inhibits extracellular matrix metalloproteinase inducer (EMMPRIN) and matrix metalloproteinase-9 expression via a protein kinase Cδ/p38/extracellular signal-regulated kinase pathway in phorbol myristate acetate-induced THP-1 macrophages. Clin Exp Pharmacol Physiol 2011; 38:11-8. [PMID: 21039753 DOI: 10.1111/j.1440-1681.2010.05454.x] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
1. Overexpression of extracellular matrix metalloproteinase inducer (EMMPRIN) and matrix metalloproteinases (MMPs) by monocytes/macrophages has been proposed to play a significant role in atherosclerotic plaque progression and rupture. The aim of the present study was to explore whether artemisinin, a natural extract from Artemisia annua, could decrease EMMPRIN and MMP-9 expression in phorbol myristate acetate (PMA)-induced macrophages by regulating the protein kinase (PK) Cδ/c-Jun N-terminal kinase (JNK)/p38/extracellular signal-regulated kinase (ERK) pathway. 2. Human monocytic THP-1 cells were pretreated with 20-80 μg/mL artemisinin for 4 h or 1-10 μmol/L rottlerin for 1 h prior to stimulation with PMA (100 nmol/L) for another 48 h. Cells were collected to analyse the induction of EMMPRIN and MMP-9. Upstream pathway analysis using the PKCδ inhibitor rottlerin detected activation of the PKCδ/JNK/p38/ERK pathway. 3. Artemisinin (20-80 μg/mL) significantly inhibited the induction of EMMPRIN and MMP-9 at both the transcriptional and translational levels in a dose-dependent manner in PMA-induced macrophages. In addition, artemisinin (20-80 μg/mL) strongly blocked PKCδ/JNK/p38/ERK MAPK phosphorylation. The PKCδ inhibitor rottlerin (1-10 μmol/L) also significantly inhibited JNK/p38/ERK phosphorylation and decreased EMMPRIN and MMP-9 mRNA and protein expression. 4. The results of the present study suggest that artemisinin inhibits EMMPRIN and MMP-9 expression and activity by suppressing the PKCδ/ERK/p38 cascade in PMA-induced macrophages.
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Affiliation(s)
- Yue Wang
- Department of Cardiology, Xinhua Hospital, Shanghai Jiaotong University Medical School, China
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Huang Z, Wang L, Meng S, Wang Y, Chen T, Wang C. Berberine reduces both MMP-9 and EMMPRIN expression through prevention of p38 pathway activation in PMA-induced macrophages. Int J Cardiol 2011; 146:153-8. [DOI: 10.1016/j.ijcard.2009.06.023] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/03/2009] [Revised: 04/23/2009] [Accepted: 06/06/2009] [Indexed: 01/15/2023]
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Kovacic P, Somanathan R. Multifaceted approach to resveratrol bioactivity: Focus on antioxidant action, cell signaling and safety. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2010; 3:86-100. [PMID: 20716933 DOI: 10.4161/oxim.3.2.11147] [Citation(s) in RCA: 81] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Resveratrol (RVT) is a naturally occurring trihydroxy stilbene that displays a wide spectrum of physiological activity. Its ability to behave therapeutically as a component of red wine has attracted wide attention. The phenol acts as a protective agent involving various body constituents. Most attention has been given to beneficial effects in insults involving cancer, aging, cardiovascular system, inflammation and the central nervous system. One of the principal modes of action appears to be as antioxidant. Other mechanistic pathways entail cell signaling, apoptosis and gene expression. There is an intriguing dichotomy in relation to pro-oxidant property. Also discussed are metabolism, receptor binding, rationale for safety and suggestions for future work. This is the first comprehensive review of RVT based on a broad, unifying mechanism.
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Affiliation(s)
- Peter Kovacic
- Department of Chemistry, San Diego State University, San Diego, CA, USA.
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Yang LX, Liu H, Guo RW, Ye J, Wang XM, Qi F, Guo CM, Liang X. Angiotensin II induces EMMPRIN expression in THP-1 macrophages via the NF-κB pathway. ACTA ACUST UNITED AC 2010; 163:88-95. [DOI: 10.1016/j.regpep.2010.04.012] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2009] [Revised: 03/29/2010] [Accepted: 04/28/2010] [Indexed: 02/05/2023]
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Li J, Qu X, Ricardo SD, Bertram JF, Nikolic-Paterson DJ. Resveratrol inhibits renal fibrosis in the obstructed kidney: potential role in deacetylation of Smad3. THE AMERICAN JOURNAL OF PATHOLOGY 2010; 177:1065-71. [PMID: 20651248 DOI: 10.2353/ajpath.2010.090923] [Citation(s) in RCA: 163] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Transforming growth factor-beta1 (TGF-beta1) promotes tissue fibrosis through the Smad3 signaling pathway. While phosphorylation is known to regulate Smad3 function, recent in vitro studies have suggested that acetylation may also regulate Smad3 function. This study investigated Smad3 acetylation in renal fibrosis. TGF-beta1 stimulation of renal fibroblasts and tubular epithelial cells induced Smad3 acetylation and phosphorylation. Resveratrol, an activator of the Nicotinamide adenine dinucleotide (NAD) dependent protein deacetylase SIRT1, reversed acetylation but not phosphorylation of Smad3 and inhibited TGF-beta1-induced up-regulation of collagen IV and fibronectin mRNA levels. Knockdown of SIRT1 expression abolished the inhibitory effect of resveratrol, and co-immunoprecipitation studies provide direct evidence of an interaction between acetylated Smad3 and SIRT1. The role of Smad3 acetylation in renal fibrosis was then examined in the unilateral ureteric obstruction (UUO) model. Immunoprecipitation studies showed acetylation and phosphorylation of Smad3 by day 2 UUO, which was sustained to day 7 in association with development of interstitial fibrosis. Resveratrol inhibited acetylation but not phosphorylation of Smad3 at day 2 UUO, and resveratrol treatment inhibited interstitial fibrosis at day 7 UUO. In conclusion, these studies support a pathological role for Smad3 acetylation in renal fibrosis and suggest that deacetylation of Smad3 may be a novel therapeutic target for fibrotic disease.
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Affiliation(s)
- Jinhua Li
- Department of Anatomy and Developmental Biology, Monash University, Clayton, Victoria, Australia.
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Sidhu SS, Nawroth R, Retz M, Lemjabbar-Alaoui H, Dasari V, Basbaum C. EMMPRIN regulates the canonical Wnt/β-catenin signaling pathway, a potential role in accelerating lung tumorigenesis. Oncogene 2010; 29:4145-56. [PMID: 20514014 DOI: 10.1038/onc.2010.166] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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EMMPRIN (basigin/CD147) is involved in the morphogenesis of tooth germ in mouse molars. Histochem Cell Biol 2010; 133:585-94. [PMID: 20369361 DOI: 10.1007/s00418-010-0697-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/24/2010] [Indexed: 10/19/2022]
Abstract
The pattern of gene expression for extracellular matrix metalloproteinase inducer (EMMPRIN) was revealed in the tooth germ of mouse mandibular molars using quantitative real-time PCR. In situ hybridization and immunohistochemical study demonstrated the characteristic distribution of EMMPRIN in the different stages of tooth germ development. To investigate the functional role played by EMMPRIN in tooth germ development, EMMPRIN siRNA interference approach was carried out in cultured mouse mandibles at embryonic day 11.0 (E11.0). The results showed that EMMPRIN siRNA-treated explants exhibited a marked growth inhibition of tooth germ compared to the control and scrambled siRNA-treated explants. Meanwhile, a significant increase in MT1-MMP mRNA expression and a reduction in MMP-2, MMP-3, MMP-9, MMP-13 and MT2-MMP mRNA expression were observed in the mouse mandibles following EMMPRIN abrogation. The current results indicate that EMMPRIN could thus be involved in the early stage of tooth germ development and morphogenesis, possibly by regulating the expression of MMP genes.
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Zhu H, Evans B, O'Neill P, Ren X, Xu Z, Hait WN, Yang JM. A role for p53 in the regulation of extracellular matrix metalloproteinase inducer in human cancer cells. Cancer Biol Ther 2009; 8:1722-8. [PMID: 19597352 DOI: 10.4161/cbt.8.18.9207] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
EMMPRIN, a transmembrane glycoprotein known to promote survival, invasion and metastasis of tumor cells through multiple pathways and mechanisms, has been found to be overexpressed in various types of cancer cells. Here we report that loss of the function of p53, a tumor suppressor protein that is mutated in approximately 50% of human cancers, contributes to the upregulation of EMMPRIN protein. We observed an inverse association between the activity of p53 and the level of EMMPRIN protein in several cancer cell lines. We further demonstrated that p53 is able to negatively regulate EMMPRIN protein, but downregulation of EMMPRIN by p53 is independent of repression of the EMMPRIN transcription. Furthermore, downregulation of EMMPRIN by p53 can be rescued by chloroquine, a lysosome inhibitor, but not by MG132, a proteasome inhibitor, suggesting an involvement of the lysosomal pathway in the p53-regulated degradation of EMMPRIN. Downregulation of EMMPRIN by p53 leads to a decrease in the activity of MMP-9 and an inhibition of tumor cell invasion. Our study suggests that the upregulation of EMMPRIN seen in many cancers can be attributed to, at least in part, the dysfunction of p53 and thus provides new evidence for the roles of p53 in tumor development and progression.
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Affiliation(s)
- Hua Zhu
- Department of Pharmacology and The Penn State Cancer Institute, The Pennsylvania State University College of Medicine, Hershey, PA 17033-0850, USA
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