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Hayderi A, Kumawat AK, Shavva VS, Dreifaldt M, Sigvant B, Petri MH, Kragsterman B, Olofsson PS, Sirsjö A, Ljungberg LU. RSAD2 is abundant in atherosclerotic plaques and promotes interferon-induced CXCR3-chemokines in human smooth muscle cells. Sci Rep 2024; 14:8196. [PMID: 38589444 PMCID: PMC11001978 DOI: 10.1038/s41598-024-58592-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2023] [Accepted: 04/01/2024] [Indexed: 04/10/2024] Open
Abstract
In atherosclerotic lesions, monocyte-derived macrophages are major source of interferon gamma (IFN-γ), a pleotropic cytokine known to regulate the expression of numerous genes, including the antiviral gene RSAD2. While RSAD2 was reported to be expressed in endothelial cells of human carotid lesions, its significance for the development of atherosclerosis remains utterly unknown. Here, we harnessed publicly available human carotid atherosclerotic data to explore RSAD2 in lesions and employed siRNA-mediated gene-knockdown to investigate its function in IFN-γ-stimulated human aortic smooth muscle cells (hAoSMCs). Silencing RSAD2 in IFN-γ-stimulated hAoSMCs resulted in reduced expression and secretion of key CXCR3-chemokines, CXCL9, CXCL10, and CXCL11. Conditioned medium from RSAD2-deficient hAoSMCs exhibited diminished monocyte attraction in vitro compared to conditioned medium from control cells. Furthermore, RSAD2 transcript was elevated in carotid lesions where it was expressed by several different cell types, including endothelial cells, macrophages and smooth muscle cells. Interestingly, RSAD2 displayed significant correlations with CXCL10 (r = 0.45, p = 0.010) and CXCL11 (r = 0.53, p = 0.002) in human carotid lesions. Combining our findings, we uncover a novel role for RSAD2 in hAoSMCs, which could potentially contribute to monocyte recruitment in the context of atherosclerosis.
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Affiliation(s)
- Assim Hayderi
- School of Medical Sciences, Örebro University, Örebro, Sweden.
| | - Ashok K Kumawat
- School of Medical Sciences, Örebro University, Örebro, Sweden
| | - Vladimir S Shavva
- Laboratory of Immunobiology, Division of Cardiovascular Medicine, Department of Medicine, Center for Bioelectronic Medicine, Solna, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden
| | - Mats Dreifaldt
- School of Medical Sciences, Örebro University, Örebro, Sweden
- Department of Cardiothoracic Surgery and Vascular Surgery, Örebro University Hospital, Örebro, Sweden
| | - Birgitta Sigvant
- Department of Surgical Sciences, Uppsala University, Uppsala, Sweden
- Centre for Clinical Research and Education, Region Värmland, Karlstad, Sweden
| | - Marcelo H Petri
- School of Medical Sciences, Örebro University, Örebro, Sweden
- Department of Cardiothoracic Surgery and Vascular Surgery, Örebro University Hospital, Örebro, Sweden
| | - Björn Kragsterman
- Department of Surgical Sciences, Uppsala University, Uppsala, Sweden
- Department of Surgery, Västmanlands Hospital Västerås, Västerås, Sweden
| | - Peder S Olofsson
- Laboratory of Immunobiology, Division of Cardiovascular Medicine, Department of Medicine, Center for Bioelectronic Medicine, Solna, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden
- Institute of Bioelectronic Medicine, Feinstein Institutes for Medical Research, Manhasset, NY, USA
| | - Allan Sirsjö
- School of Medical Sciences, Örebro University, Örebro, Sweden
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Zegeye MM, Nakka SS, Andersson JSO, Söderberg S, Ljungberg LU, Kumawat AK, Sirsjö A. Soluble LDL-receptor is induced by TNF-α and inhibits hepatocytic clearance of LDL-cholesterol. J Mol Med (Berl) 2023; 101:1615-1626. [PMID: 37861809 PMCID: PMC10697900 DOI: 10.1007/s00109-023-02379-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2023] [Revised: 08/18/2023] [Accepted: 09/18/2023] [Indexed: 10/21/2023]
Abstract
Defective LDL-C clearance and hence its elevation in the circulation is an established risk factor for cardiovascular diseases (CVDs) such as myocardial infarction (MI). A soluble LDL-receptor (sLDL-R) has been detected in human plasma which correlates strongly with circulating LDL-C and classical conditions that promote chronic inflammation. However, the mechanistic interplay between sLDL-R, inflammation, and CVDs remains to be investigated. Here, we report that stimulation of HepG2 cells with TNF-α induces the release of sLDL-R into culture supernatants. In addition, TNF-α induces gene expression of peptidases ADAM-17 and MMP-14 in HepG2 cells, and inhibiting these peptidases using TMI 1 significantly reduces the TNF-α induced sLDL-R release. We found that a soluble form of recombinant LDL-R (100 nM) can strongly bind to LDL-C and form a stable complex (KD = E-12). Moreover, incubation of HepG2 cells with this recombinant LDL-R resulted in reduced LDL-C uptake in a dose-dependent manner. In a nested case-control study, we found that baseline sLDL-R in plasma is positively correlated with plasma total cholesterol level. Furthermore, a twofold increase in plasma sLDL-R was associated with a 55% increase in the risk of future MI [AOR = 1.55 (95% CI = 1.10-2.18)]. Nevertheless, mediation analyses revealed that a significant proportion of the association is mediated by elevation in plasma cholesterol level (indirect effect β = 0.21 (95% CI = 0.07-0.38). Collectively, our study shows that sLDL-R is induced by a pro-inflammatory cytokine TNF-α via membrane shedding. Furthermore, an increase in sLDL-R could inhibit hepatic clearance of LDL-C increasing its half-life in the circulation and contributing to the pathogenesis of MI. KEY MESSAGES: TNF-α causes shedding of hepatocytic LDL-R through induction of ADAM-17 and MMP-14. sLDL-R binds strongly to LDL-C and inhibits its uptake by hepatocytic cells. Plasma sLDL-R is positively correlated with TNF-α and cholesterol. Plasma sLDL-R is an independent predictor of myocardial infarction (MI). Plasma cholesterol mediates the association between sLDL-R and MI.
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Affiliation(s)
- Mulugeta M Zegeye
- Cardiovascular Research Centre, School of Medical Sciences, Örebro University Södra Grev, Rosengatan 32, 703 62, Örebro, Sweden.
| | - Sravya S Nakka
- Department of Infectious Diseases, Sahlgrenska University Hospital, Region Västra Götaland, Gothenburg, Sweden
| | - Jonas S O Andersson
- Department of Public Health and Clinical Medicine, Skellefteå Research Unit, Umeå University, 931 86, Skellefteå, Sweden
| | - Stefan Söderberg
- Department of Public Health and Clinical Medicine, Medicine Unit, Umeå University, Umeå, Sweden
| | - Liza U Ljungberg
- Cardiovascular Research Centre, School of Medical Sciences, Örebro University Södra Grev, Rosengatan 32, 703 62, Örebro, Sweden
| | - Ashok K Kumawat
- Cardiovascular Research Centre, School of Medical Sciences, Örebro University Södra Grev, Rosengatan 32, 703 62, Örebro, Sweden
| | - Allan Sirsjö
- Cardiovascular Research Centre, School of Medical Sciences, Örebro University Södra Grev, Rosengatan 32, 703 62, Örebro, Sweden
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Zegeye MM, Matic L, Lengquist M, Hayderi A, Grenegård M, Hedin U, Sirsjö A, Ljungberg LU, Kumawat AK. Interleukin-6 trans-signaling induced laminin switch contributes to reduced trans-endothelial migration of granulocytic cells. Atherosclerosis 2023; 371:41-53. [PMID: 36996622 DOI: 10.1016/j.atherosclerosis.2023.03.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Revised: 02/20/2023] [Accepted: 03/15/2023] [Indexed: 04/01/2023]
Abstract
BACKGROUND AND AIMS Laminins are essential components of the endothelial basement membrane, which predominantly contains LN421 and LN521 isoforms. Regulation of laminin expression under pathophysiological conditions is largely unknown. In this study, we aimed to investigate the role of IL-6 in regulating endothelial laminin profile and characterize the impact of altered laminin composition on the phenotype, inflammatory response, and function of endothelial cells (ECs). METHODS HUVECs and HAECs were used for in vitro experiments. Trans-well migration experiments were performed using leukocytes isolated from peripheral blood of healthy donors. The BiKE cohort was used to assess expression of laminins in atherosclerotic plaques and healthy vessels. Gene and protein expression was analyzed using Microarray/qPCR and proximity extension assay, ELISA, immunostaining or immunoblotting techniques, respectively. RESULTS Stimulation of ECs with IL-6+sIL-6R, but not IL-6 alone, reduces expression of laminin α4 (LAMA4) and increases laminin α5 (LAMA5) expression at the mRNA and protein levels. In addition, IL-6+sIL-6R stimulation of ECs differentially regulates the release of several proteins including CXCL8 and CXCL10, which collectively were predicted to inhibit granulocyte transmigration. Experimentally, we demonstrated that granulocyte migration is inhibited across ECs pre-treated with IL-6+sIL-6R. In addition, granulocyte migration across ECs cultured on LN521 was significantly lower compared to LN421. In human atherosclerotic plaques, expression of endothelial LAMA4 and LAMA5 is significantly lower compared to control vessels. Moreover, LAMA5-to-LAMA4 expression ratio was negatively correlated with granulocytic cell markers (CD177 and myeloperoxidase (MPO)) and positively correlated with T-lymphocyte marker CD3. CONCLUSIONS We showed that expression of endothelial laminin alpha chains is regulated by IL-6 trans-signaling and contributes to inhibition of trans-endothelial migration of granulocytic cells. Further, expression of laminin alpha chains is altered in human atherosclerotic plaques and is related to intra-plaque abundance of leukocyte subpopulations.
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Affiliation(s)
- Mulugeta M Zegeye
- School of Medical Sciences, Örebro University, Örebro, Sweden; Cardiovascular Research Centre (CVRC), School of Medical Sciences, Örebro University, Örebro, Sweden.
| | - Ljubica Matic
- Department of Molecular Medicine and Surgery, Karolinska Institute, Stockholm, Sweden
| | - Mariette Lengquist
- Department of Molecular Medicine and Surgery, Karolinska Institute, Stockholm, Sweden
| | - Assim Hayderi
- School of Medical Sciences, Örebro University, Örebro, Sweden; Cardiovascular Research Centre (CVRC), School of Medical Sciences, Örebro University, Örebro, Sweden
| | - Magnus Grenegård
- School of Medical Sciences, Örebro University, Örebro, Sweden; Cardiovascular Research Centre (CVRC), School of Medical Sciences, Örebro University, Örebro, Sweden
| | - Ulf Hedin
- Department of Molecular Medicine and Surgery, Karolinska Institute, Stockholm, Sweden
| | - Allan Sirsjö
- School of Medical Sciences, Örebro University, Örebro, Sweden; Cardiovascular Research Centre (CVRC), School of Medical Sciences, Örebro University, Örebro, Sweden
| | - Liza U Ljungberg
- School of Medical Sciences, Örebro University, Örebro, Sweden; Cardiovascular Research Centre (CVRC), School of Medical Sciences, Örebro University, Örebro, Sweden
| | - Ashok K Kumawat
- School of Medical Sciences, Örebro University, Örebro, Sweden; Cardiovascular Research Centre (CVRC), School of Medical Sciences, Örebro University, Örebro, Sweden
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Kumawat AK, Zegeye MM, Paramel GV, Baumgartner R, Gisterå A, Amegavie O, Hellberg S, Jin H, Caravaca AS, Söderström LÅ, Gudmundsdotter L, Frejd FY, Ljungberg LU, Olofsson PS, Ketelhuth DFJ, Sirsjö A. Inhibition of IL17A Using an Affibody Molecule Attenuates Inflammation in ApoE-Deficient Mice. Front Cardiovasc Med 2022; 9:831039. [PMID: 35282365 PMCID: PMC8907570 DOI: 10.3389/fcvm.2022.831039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2021] [Accepted: 01/31/2022] [Indexed: 11/15/2022] Open
Abstract
The balance between pro- and anti-inflammatory cytokines released by immune and non-immune cells plays a decisive role in the progression of atherosclerosis. Interleukin (IL)-17A has been shown to accelerate atherosclerosis. In this study, we investigated the effect on pro-inflammatory mediators and atherosclerosis development of an Affibody molecule that targets IL17A. Affibody molecule neutralizing IL17A, or sham were administered in vitro to human aortic smooth muscle cells (HAoSMCs) and murine NIH/3T3 fibroblasts and in vivo to atherosclerosis-prone, hyperlipidaemic ApoE−/− mice. Levels of mediators of inflammation and development of atherosclerosis were compared between treatments. Exposure of human smooth muscle cells and murine NIH/3T3 fibroblasts in vitro to αIL-17A Affibody molecule markedly reduced IL6 and CXCL1 release in supernatants compared with sham exposure. Treatment of ApoE−/− mice with αIL-17A Affibody molecule significantly reduced plasma protein levels of CXCL1, CCL2, CCL3, HGF, PDGFB, MAP2K6, QDPR, and splenocyte mRNA levels of Ccxl1, Il6, and Ccl20 compared with sham exposure. There was no significant difference in atherosclerosis burden between the groups. In conclusion, administration of αIL17A Affibody molecule reduced levels of pro-inflammatory mediators and attenuated inflammation in ApoE−/− mice.
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Affiliation(s)
- Ashok Kumar Kumawat
- Cardiovascular Research Centre, School of Medical Sciences, Örebro University, Orebro, Sweden
- *Correspondence: Ashok Kumar Kumawat
| | - Mulugeta M. Zegeye
- Cardiovascular Research Centre, School of Medical Sciences, Örebro University, Orebro, Sweden
| | - Geena Varghese Paramel
- Cardiovascular Research Centre, School of Medical Sciences, Örebro University, Orebro, Sweden
| | - Roland Baumgartner
- Division of Cardiovascular Medicine, Department of Medicine, Solna, Centre for Molecular Medicine, Karolinska University Hospital, Karolinska Institutet, Stockholm, Sweden
| | - Anton Gisterå
- Division of Cardiovascular Medicine, Department of Medicine, Solna, Centre for Molecular Medicine, Karolinska University Hospital, Karolinska Institutet, Stockholm, Sweden
| | - Obed Amegavie
- Cardiovascular Research Centre, School of Medical Sciences, Örebro University, Orebro, Sweden
| | - Sanna Hellberg
- Division of Cardiovascular Medicine, Department of Medicine, Solna, Centre for Molecular Medicine, Karolinska University Hospital, Karolinska Institutet, Stockholm, Sweden
| | - Hong Jin
- Division of Cardiovascular Medicine, Department of Medicine, Solna, Centre for Molecular Medicine, Karolinska University Hospital, Karolinska Institutet, Stockholm, Sweden
| | - April S. Caravaca
- Division of Cardiovascular Medicine, Department of Medicine, Solna, Centre for Molecular Medicine, Karolinska University Hospital, Karolinska Institutet, Stockholm, Sweden
| | - Leif Å. Söderström
- Division of Cardiovascular Medicine, Department of Medicine, Solna, Centre for Molecular Medicine, Karolinska University Hospital, Karolinska Institutet, Stockholm, Sweden
| | | | | | - Liza U. Ljungberg
- Cardiovascular Research Centre, School of Medical Sciences, Örebro University, Orebro, Sweden
| | - Peder S. Olofsson
- Division of Cardiovascular Medicine, Department of Medicine, Solna, Centre for Molecular Medicine, Karolinska University Hospital, Karolinska Institutet, Stockholm, Sweden
| | - Daniel F. J. Ketelhuth
- Division of Cardiovascular Medicine, Department of Medicine, Solna, Centre for Molecular Medicine, Karolinska University Hospital, Karolinska Institutet, Stockholm, Sweden
- Department of Cardiovascular and Renal Research, Institute of Molecular Medicine, University of Southern Denmark, Odense, Denmark
| | - Allan Sirsjö
- Cardiovascular Research Centre, School of Medical Sciences, Örebro University, Orebro, Sweden
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Paramel GV, Karadimou G, Eremo AG, Ljungberg LU, Hedin U, Olofsson PS, Folkersen L, Paulsson-Berne G, Sirsjö A, Fransén K. Author Correction: Expression of CARD8 in human atherosclerosis and its regulation of inflammatory proteins in human endothelial cells. Sci Rep 2021; 11:8852. [PMID: 33875752 PMCID: PMC8055965 DOI: 10.1038/s41598-021-88467-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
An amendment to this paper has been published and can be accessed via a link at the top of the paper.
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Affiliation(s)
- Geena V Paramel
- Cardiovascular Research Centre, School of Medical Sciences, Faculty of Medicine and Health, Örebro University, 70182, Örebro, Sweden
| | - Glykeria Karadimou
- Laboratory of Immunobiology, Center for Bioelectronic Medicine, Department of Medicine, Karolinska Institute, Solna, Stockholm, Sweden
| | - Anna Göthlin Eremo
- Department of Clinical Research Laboratory, Faculty of Medicine and Health, Örebro University, Örebro, Sweden
| | - Liza U Ljungberg
- Cardiovascular Research Centre, School of Medical Sciences, Faculty of Medicine and Health, Örebro University, 70182, Örebro, Sweden
| | - Ulf Hedin
- Department of Molecular Medicine and Surgery, Center for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Peder S Olofsson
- Laboratory of Immunobiology, Center for Bioelectronic Medicine, Department of Medicine, Karolinska Institute, Solna, Stockholm, Sweden.,Institute of Bioelectronic Medicine, Feinstein Institutes for Medical Research, Manhasset, NY, USA
| | - Lasse Folkersen
- Institute of Biological Psychiatry, Sankt Hans Hospital, Copenhagen, Denmark
| | - Gabrielle Paulsson-Berne
- Laboratory of Immunobiology, Center for Bioelectronic Medicine, Department of Medicine, Karolinska Institute, Solna, Stockholm, Sweden
| | - Allan Sirsjö
- Cardiovascular Research Centre, School of Medical Sciences, Faculty of Medicine and Health, Örebro University, 70182, Örebro, Sweden
| | - Karin Fransén
- Cardiovascular Research Centre, School of Medical Sciences, Faculty of Medicine and Health, Örebro University, 70182, Örebro, Sweden.
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Zegeye MM, Andersson JSO, Wennberg P, Repsilber D, Sirsjö A, Ljungberg LU. IL-6 as a Mediator of the Association Between Traditional Risk Factors and Future Myocardial Infarction: A Nested Case-Control Study. Arterioscler Thromb Vasc Biol 2021; 41:1570-1579. [PMID: 33657883 DOI: 10.1161/atvbaha.120.315793] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
[Figure: see text].
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Affiliation(s)
- Mulugeta M Zegeye
- Cardiovascular Research Centre, School of Medical Sciences, Örebro University, Sweden (M.M.Z., D.R., A.S., L.U.L.)
| | - Jonas S O Andersson
- Skellefteå Research Unit, Department of Public Health and Clinical Medicine (J.S.O.A.), Umeå University, Sweden
| | - Patrik Wennberg
- Department of Public Health and Clinical Medicine, Family Medicine (P.W.), Umeå University, Sweden
| | - Dirk Repsilber
- Cardiovascular Research Centre, School of Medical Sciences, Örebro University, Sweden (M.M.Z., D.R., A.S., L.U.L.)
| | - Allan Sirsjö
- Cardiovascular Research Centre, School of Medical Sciences, Örebro University, Sweden (M.M.Z., D.R., A.S., L.U.L.)
| | - Liza U Ljungberg
- Cardiovascular Research Centre, School of Medical Sciences, Örebro University, Sweden (M.M.Z., D.R., A.S., L.U.L.)
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7
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Paramel GV, Karadimou G, Eremo AG, Ljungberg LU, Hedin U, Olofsson PS, Folkersen L, Paulsson-Berne G, Sirsjö A, Fransén K. Expression of CARD8 in human atherosclerosis and its regulation of inflammatory proteins in human endothelial cells. Sci Rep 2020; 10:19108. [PMID: 33154409 PMCID: PMC7644683 DOI: 10.1038/s41598-020-73600-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2020] [Accepted: 09/15/2020] [Indexed: 11/23/2022] Open
Abstract
The Caspase activation and recruitment domain 8 (CARD8) protein is a component of innate immunity and overexpression of CARD8 mRNA was previously identified in atherosclerosis. However, very little is known about the regulation of CARD8 in endothelial cells and atherosclerosis. The aim of this study was to investigate CARD8 in the regulation of cytokine and chemokine expression in endothelial cells. Sections of human atherosclerotic lesions and non-atherosclerotic arteries were immunostained for CARD8 protein. Expression of CARD8 was correlated to mediators of inflammation in atherosclerotic lesions using Biobank of Karolinska Endarterectomies microarray data. The CARD8 mRNA was knocked-down in human umbilical vein endothelial cells (HUVECs) in vitro, followed by quantitative RT-PCR analysis and OLINK Proteomics. Endothelial and smooth muscle cells in arterial tissue expressed CARD8 and CARD8 correlated with vWF, CD163 and the expression of inflammatory genes, such as CXCL1, CXCL6 and PDGF-A in plaque. Knock-down of CARD8 in HUVECs significantly altered proteins involved in inflammatory response, such as CXCL1, CXCL6, PDGF-A, MCP-1 and IL-6. The present study suggest that CARD8 regulate the expression of cytokines and chemokines in endothelial cells and atherosclerotic lesions, suggesting that CARD8 plays a significant role in endothelial activation.
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Affiliation(s)
- Geena V Paramel
- Cardiovascular Research Centre, School of Medical Sciences, Faculty of Medicine and Health, Örebro University, 70182, Örebro, Sweden
| | - Glykeria Karadimou
- Laboratory of Immunobiology, Center for Bioelectronic Medicine, Department of Medicine, Karolinska Institute, Solna, Stockholm, Sweden
| | - Anna Göthlin Eremo
- Department of Clinical Research Laboratory, Faculty of Medicine and Health, Örebro University, Örebro, Sweden
| | - Liza U Ljungberg
- Cardiovascular Research Centre, School of Medical Sciences, Faculty of Medicine and Health, Örebro University, 70182, Örebro, Sweden
| | - Ulf Hedin
- Department of Molecular Medicine and Surgery, Center for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Peder S Olofsson
- Laboratory of Immunobiology, Center for Bioelectronic Medicine, Department of Medicine, Karolinska Institute, Solna, Stockholm, Sweden.,Institute of Bioelectronic Medicine, Feinstein Institutes for Medical Research, Manhasset, NY, USA
| | - Lasse Folkersen
- Institute of Biological Psychiatry, Sankt Hans Hospital, Copenhagen, Denmark
| | - Gabrielle Paulsson-Berne
- Laboratory of Immunobiology, Center for Bioelectronic Medicine, Department of Medicine, Karolinska Institute, Solna, Stockholm, Sweden
| | - Allan Sirsjö
- Cardiovascular Research Centre, School of Medical Sciences, Faculty of Medicine and Health, Örebro University, 70182, Örebro, Sweden
| | - Karin Fransén
- Cardiovascular Research Centre, School of Medical Sciences, Faculty of Medicine and Health, Örebro University, 70182, Örebro, Sweden.
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Kardeby C, Fälker K, Haining EJ, Criel M, Lindkvist M, Barroso R, Påhlsson P, Ljungberg LU, Tengdelius M, Rainger GE, Watson S, Eble JA, Hoylaerts MF, Emsley J, Konradsson P, Watson SP, Sun Y, Grenegård M. Synthetic glycopolymers and natural fucoidans cause human platelet aggregation via PEAR1 and GPIbα. Blood Adv 2019; 3:275-287. [PMID: 30700416 PMCID: PMC6373755 DOI: 10.1182/bloodadvances.2018024950] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2018] [Accepted: 12/27/2018] [Indexed: 12/14/2022] Open
Abstract
Fucoidans are sulfated fucose-based polysaccharides that activate platelets and have pro- and anticoagulant effects; thus, they may have therapeutic value. In the present study, we show that 2 synthetic sulfated α-l-fucoside-pendant glycopolymers (with average monomeric units of 13 and 329) and natural fucoidans activate human platelets through a Src- and phosphatidylinositol 3-kinase (PI3K)-dependent and Syk-independent signaling cascade downstream of the platelet endothelial aggregation receptor 1 (PEAR1). Synthetic glycopolymers and natural fucoidan stimulate marked phosphorylation of PEAR1 and Akt, but not Syk. Platelet aggregation and Akt phosphorylation induced by natural fucoidan and synthetic glycopolymers are blocked by a monoclonal antibody to PEAR1. Direct binding of sulfated glycopolymers to epidermal like growth factor (EGF)-like repeat 13 of PEAR1 was shown by avidity-based extracellular protein interaction screen technology. In contrast, synthetic glycopolymers and natural fucoidans activate mouse platelets through a Src- and Syk-dependent pathway regulated by C-type lectin-like receptor 2 (CLEC-2) with only a minor role for PEAR1. Mouse platelets lacking the extracellular domain of GPIbα and human platelets treated with GPIbα-blocking antibodies display a reduced aggregation response to synthetic glycopolymers. We found that synthetic sulfated glycopolymers bind directly to GPIbα, substantiating that GPIbα facilitates the interaction of synthetic glycopolymers with CLEC-2 or PEAR1. Our results establish PEAR1 as the major signaling receptor for natural fucose-based polysaccharides and synthetic glycopolymers in human, but not in mouse, platelets. Sulfated α-l-fucoside-pendant glycopolymers are unique tools for further investigation of the physiological role of PEAR1 in platelets and beyond.
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Affiliation(s)
- Caroline Kardeby
- Cardiovascular Research Centre, School of Medical Sciences, Örebro University, Örebro, Sweden
| | - Knut Fälker
- Cardiovascular Research Centre, School of Medical Sciences, Örebro University, Örebro, Sweden
| | - Elizabeth J Haining
- Institute of Cardiovascular Sciences, College of Medical and Dental Sciences, University of Birmingham, Birmingham, United Kingdom
| | - Maarten Criel
- Center for Molecular and Vascular Biology, Department of Cardiovascular Sciences, University of Leuven, Leuven, Belgium
| | - Madelene Lindkvist
- Cardiovascular Research Centre, School of Medical Sciences, Örebro University, Örebro, Sweden
| | - Ruben Barroso
- Institute of Cardiovascular Sciences, College of Medical and Dental Sciences, University of Birmingham, Birmingham, United Kingdom
- Centre of Membrane Proteins and Receptors, Universities of Birmingham and Nottingham, The Midlands, United Kingdom
| | - Peter Påhlsson
- Division of Cell Biology, Department of Clinical and Experimental Medicine, and
| | - Liza U Ljungberg
- Cardiovascular Research Centre, School of Medical Sciences, Örebro University, Örebro, Sweden
| | | | - G Ed Rainger
- Institute of Cardiovascular Sciences, College of Medical and Dental Sciences, University of Birmingham, Birmingham, United Kingdom
| | - Stephanie Watson
- Institute of Cardiovascular Sciences, College of Medical and Dental Sciences, University of Birmingham, Birmingham, United Kingdom
| | - Johannes A Eble
- Institute of Physiological Chemistry and Pathobiochemistry, University of Münster, Münster, Germany; and
| | - Marc F Hoylaerts
- Center for Molecular and Vascular Biology, Department of Cardiovascular Sciences, University of Leuven, Leuven, Belgium
| | - Jonas Emsley
- Centre of Membrane Proteins and Receptors, Universities of Birmingham and Nottingham, The Midlands, United Kingdom
- Division of Biomolecular Science and Medicinal Chemistry, Centre for Biomolecular Sciences, School of Pharmacy, University of Nottingham, Nottingham, United Kingdom
| | - Peter Konradsson
- Division of Organic Chemistry, Linköping University, Linköping, Sweden
| | - Steve P Watson
- Institute of Cardiovascular Sciences, College of Medical and Dental Sciences, University of Birmingham, Birmingham, United Kingdom
- Centre of Membrane Proteins and Receptors, Universities of Birmingham and Nottingham, The Midlands, United Kingdom
| | - Yi Sun
- Institute of Cardiovascular Sciences, College of Medical and Dental Sciences, University of Birmingham, Birmingham, United Kingdom
- Centre of Membrane Proteins and Receptors, Universities of Birmingham and Nottingham, The Midlands, United Kingdom
| | - Magnus Grenegård
- Cardiovascular Research Centre, School of Medical Sciences, Örebro University, Örebro, Sweden
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9
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Zegeye MM, Lindkvist M, Fälker K, Kumawat AK, Paramel G, Grenegård M, Sirsjö A, Ljungberg LU. Activation of the JAK/STAT3 and PI3K/AKT pathways are crucial for IL-6 trans-signaling-mediated pro-inflammatory response in human vascular endothelial cells. Cell Commun Signal 2018; 16:55. [PMID: 30185178 PMCID: PMC6125866 DOI: 10.1186/s12964-018-0268-4] [Citation(s) in RCA: 183] [Impact Index Per Article: 30.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2018] [Accepted: 08/27/2018] [Indexed: 01/05/2023] Open
Abstract
Background IL-6 classic signaling is linked to anti-inflammatory functions while the trans-signaling is associated with pro-inflammatory responses. Classic signaling is induced via membrane-bound IL-6 receptor (IL-6R) whereas trans-signaling requires prior binding of IL-6 to the soluble IL-6R. In both cases, association with the signal transducing gp130 receptor is compulsory. However, differences in the downstream signaling mechanisms of IL-6 classic- versus trans-signaling remains largely elusive. Methods In this study, we used flow cytometry, quantitative PCR, ELISA and immuno-blotting techniques to investigate IL-6 classic and trans-signaling mechanisms in Human Umbilical Vein Endothelial Cells (HUVECs). Results We show that both IL-6R and gp130 are expressed on the surface of human vascular endothelial cells, and that the expression is affected by pro-inflammatory stimuli. In contrast to IL-6 classic signaling, IL-6 trans-signaling induces the release of the pro-inflammatory chemokine Monocyte Chemoattractant Protein-1 (MCP-1) from human vascular endothelial cells. In addition, we reveal that the classic signaling induces activation of the JAK/STAT3 pathway while trans-signaling also activates the PI3K/AKT and the MEK/ERK pathways. Furthermore, we demonstrate that MCP-1 induction by IL-6 trans-signaling requires simultaneous activation of the JAK/STAT3 and PI3K/AKT pathways. Conclusions Collectively, our study reports molecular differences in IL-6 classic- and trans-signaling in human vascular endothelial cells; and elucidates the pathways which mediate MCP-1 induction by IL-6 trans-signaling. Electronic supplementary material The online version of this article (10.1186/s12964-018-0268-4) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Mulugeta M Zegeye
- Cardiovascular Research Center, School of Medical Sciences, Örebro University Södra Grev Rosengatan 32, 703 62, Örebro, Sweden.
| | - Madelene Lindkvist
- Cardiovascular Research Center, School of Medical Sciences, Örebro University Södra Grev Rosengatan 32, 703 62, Örebro, Sweden
| | - Knut Fälker
- Cardiovascular Research Center, School of Medical Sciences, Örebro University Södra Grev Rosengatan 32, 703 62, Örebro, Sweden
| | - Ashok K Kumawat
- Cardiovascular Research Center, School of Medical Sciences, Örebro University Södra Grev Rosengatan 32, 703 62, Örebro, Sweden
| | - Geena Paramel
- Cardiovascular Research Center, School of Medical Sciences, Örebro University Södra Grev Rosengatan 32, 703 62, Örebro, Sweden.,Present address: Department of Biochemistry and Molecular Biology, Faculty of Medicine, Dalhousie University, Dalhousie Medicine New Brunswick, Saint John, NB, E2L 4L5, Canada
| | - Magnus Grenegård
- Cardiovascular Research Center, School of Medical Sciences, Örebro University Södra Grev Rosengatan 32, 703 62, Örebro, Sweden
| | - Allan Sirsjö
- Cardiovascular Research Center, School of Medical Sciences, Örebro University Södra Grev Rosengatan 32, 703 62, Örebro, Sweden
| | - Liza U Ljungberg
- Cardiovascular Research Center, School of Medical Sciences, Örebro University Södra Grev Rosengatan 32, 703 62, Örebro, Sweden
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10
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Donner L, Fälker K, Gremer L, Klinker S, Pagani G, Ljungberg LU, Lothmann K, Rizzi F, Schaller M, Gohlke H, Willbold D, Grenegard M, Elvers M. Platelets contribute to amyloid-β aggregation in cerebral vessels through integrin αIIbβ3-induced outside-in signaling and clusterin release. Sci Signal 2016; 9:ra52. [PMID: 27221710 DOI: 10.1126/scisignal.aaf6240] [Citation(s) in RCA: 71] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Cerebral amyloid angiopathy (CAA) is a vascular dysfunction disorder characterized by deposits of amyloid-β (Aβ) in the walls of cerebral vessels. CAA and Aβ deposition in the brain parenchyma contribute to dementia and Alzheimer's disease (AD). We investigated the contribution of platelets, which accumulate at vascular Aβ deposits, to CAA. We found that synthetic monomeric Aβ40 bound through its RHDS (Arg-His-Asp-Ser) sequence to integrin αIIbβ3, which is the receptor for the extracellular matrix protein fibrinogen, and stimulated the secretion of adenosine diphosphate (ADP) and the chaperone protein clusterin from platelets. Clusterin promoted the formation of fibrillar Aβ aggregates, and ADP acted through its receptors P2Y1 and P2Y12 on platelets to enhance integrin αIIbβ3 activation, further increasing the secretion of clusterin and Aβ40 binding to platelets. Platelets from patients with Glanzmann's thrombasthenia, a bleeding disorder in which platelets have little or dysfunctional αIIbβ3, indicated that the abundance of this integrin dictated Aβ-induced clusterin release and platelet-induced Aβ aggregation. The antiplatelet agent clopidogrel, which irreversibly inhibits P2Y12, inhibited Aβ aggregation in platelet cultures; in transgenic AD model mice, this drug reduced the amount of clusterin in the circulation and the incidence of CAA. Our findings indicate that activated platelets directly contribute to CAA by promoting the formation of Aβ aggregates and that Aβ, in turn, activates platelets, creating a feed-forward loop. Thus, antiplatelet therapy may alleviate fibril formation in cerebral vessels of AD patients.
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Affiliation(s)
- Lili Donner
- Department of Clinical and Experimental Hemostasis, Hemotherapy and Transfusion Medicine, Heinrich Heine University, 40225 Düsseldorf, Germany
| | - Knut Fälker
- Cardiovascular Research Centre, Örebro University, SE-701 82 Örebro, Sweden
| | - Lothar Gremer
- Institute of Physical Biology, Heinrich Heine University, 40225 Düsseldorf, Germany. Institute of Structural Biochemistry (ICS-6), Research Centre Jülich, 52425 Jülich, Germany
| | - Stefan Klinker
- Institute of Physical Biology, Heinrich Heine University, 40225 Düsseldorf, Germany
| | - Giulia Pagani
- Institute for Pharmaceutical and Medicinal Chemistry, Department of Mathematics and Natural Sciences, Heinrich Heine University, 40225 Düsseldorf, Germany
| | - Liza U Ljungberg
- Cardiovascular Research Centre, Örebro University, SE-701 82 Örebro, Sweden
| | - Kimberley Lothmann
- Institute of Physical Biology, Heinrich Heine University, 40225 Düsseldorf, Germany
| | - Federica Rizzi
- Department of Biomedical, Biotechnological, and Translation Sciences, University of Parma, Via Volturno 39/a, 43126 Parma, Italy. Centre for Molecular and Translational Oncology (COMT), University of Parma, Parco Area delle Scienze 11/a, 43124 Parma, Italy. National Institute of Biostructure and Biosystems (INBB), Viale Medaglie d'Oro 305, 00136 Rome, Italy
| | - Martin Schaller
- Department of Dermatology, University of Tübingen, 72076 Tübingen, Germany
| | - Holger Gohlke
- Institute for Pharmaceutical and Medicinal Chemistry, Department of Mathematics and Natural Sciences, Heinrich Heine University, 40225 Düsseldorf, Germany
| | - Dieter Willbold
- Institute of Physical Biology, Heinrich Heine University, 40225 Düsseldorf, Germany. Institute of Structural Biochemistry (ICS-6), Research Centre Jülich, 52425 Jülich, Germany
| | - Magnus Grenegard
- Cardiovascular Research Centre, Örebro University, SE-701 82 Örebro, Sweden
| | - Margitta Elvers
- Department of Clinical and Experimental Hemostasis, Hemotherapy and Transfusion Medicine, Heinrich Heine University, 40225 Düsseldorf, Germany.
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11
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Ljungberg LU, Persson K, Eriksson AC, Green H, Whiss PA. Effects of nicotine, its metabolites and tobacco extracts on human platelet function in vitro. Toxicol In Vitro 2013; 27:932-8. [PMID: 23318728 DOI: 10.1016/j.tiv.2013.01.004] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2012] [Revised: 12/09/2012] [Accepted: 01/02/2013] [Indexed: 10/27/2022]
Abstract
Cigarette smoking is a leading cause of cardiovascular disease. The cardiovascular effects of smoking are probably multifactorial, including effects on platelets. Previous reports investigating the effects of nicotine and tobacco on platelet function are inconsistent. The present study investigated in vitro effects of nicotine, its major metabolites, tobacco extracts and extract of tobacco-free snuff on human platelets. None of the metabolites cotinine, cotinine-N-oxide, nicotine-1'-N-oxide or trans-3'-hydroxycotinine (0.1-10 μM) affected platelet aggregation or P-selectin expression. Nicotine (10 μM) weakly increased platelet aggregation, whereas trans-3'-hydroxycotinine (0.1 μM) and nicotine-1'-N-oxide (1-10 μM) weakly inhibited adhesion to fibrinogen. To elucidate the influence of other tobacco compounds, we investigated the impact of moist tobacco and smoke extracts on platelet function. Filtered extracts of oral snuff, cigarette smoke and tobacco free snuff inhibited platelet adhesion concentration-dependently. The inhibitory effects of tobacco extracts on platelet adhesion were independent of nicotine content and the nitric-oxide-pathway and not mediated through a platelet-nicotine-receptor. Taken together, tobacco extracts inhibit platelet activation during short-term in vitro challenge. As only limited effects of nicotine and nicotine metabolites were seen, the tobacco-induced platelet inhibition are likely induced by other compounds present in tobacco and tobacco free snuff.
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Affiliation(s)
- Liza U Ljungberg
- Division of Cardiovascular Medicine, Department of Medical and Health Sciences, Faculty of Health Sciences, Linköping University, SE-581 85 Linköping, Sweden.
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12
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Ljungberg LU, Östgren CJ, Nyström FH, Länne T. Associations of genetic polymorphisms in the renin-angiotensin system with central aortic and ambulatory blood pressure in type 2 diabetic patients. J Renin Angiotensin Aldosterone Syst 2013; 15:61-8. [PMID: 23358739 DOI: 10.1177/1470320312474052] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Patients with type 2 diabetes (T2D) are at high risk of developing hypertension and related cardiovascular disease. The renin-angiotensin system (RAS) plays a central role in regulation of blood pressure (BP). Accordingly, each component of this system represents a potential candidate in the etiology of hypertension. This study investigated the impact of polymorphisms within the RAS on ambulatory and central BP in T2D subjects. A cohort of 761 subjects (55-65 years) with T2D was studied. Ambulatory and central BP were measured, and ACE I/D genotype, angiotensinogen M235T, renin rs6693954 and ATR1-A1166C polymorphisms were analyzed. Women carrying the AA-genotype had lower 24-hour and day-time systolic and diastolic BP (p<0.05), and lower night-time and central diastolic BP (p<0.05), compared to T allele carriers. In men, the AA-genotype was instead associated with higher central diastolic BP (p=0.018) and higher augmentation index (p=0.016). Further, the associations between the renin rs6693954 SNP and diastolic BP were strongly gender dependent (p≤0.001). In T2D patients, there is a gender-dependent association of the renin rs6693954 SNP with central and ambulatory BP. Women carrying the renin rs6693954 AA-genotype may be protected against the higher BP seen in men with the same genotype.
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Affiliation(s)
- Liza U Ljungberg
- 1Division of Cardiovascular Medicine, Department of Medical and Health Sciences, Faculty of Health Science, Linköping University, Sweden
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13
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Ljungberg LU, De Basso R, Alehagen U, Björck HM, Persson K, Dahlström U, Länne T. Impaired abdominal aortic wall integrity in elderly men carrying the angiotensin-converting enzyme D allele. Eur J Vasc Endovasc Surg 2011; 42:309-16. [PMID: 21570325 DOI: 10.1016/j.ejvs.2011.04.010] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2010] [Accepted: 04/04/2011] [Indexed: 11/17/2022]
Abstract
OBJECTIVE A polymorphism in the angiotensin-converting-enzyme gene (ACE I/D) has been associated with abdominal aortic aneurysm and a link between aortic aneurysm and aortic stiffness has been suggested. This study aimed to explore the links between ACE I/D polymorphism, circulating ACE and abdominal aortic wall integrity as reflected by abdominal aortic wall stiffness. MATERIAL A total of 212 men and 194 women, aged 70-88 years, were studied. METHODS Mechanical properties of the abdominal aorta were determined using the Wall Track System, ACE genotype using the polymerase chain reaction (PCR) and circulating ACE level by enzyme-linked immunosorbent assay (ELISA). RESULTS In men, pulsatile diameter change differed between genotypes (II 0.70, ID 0.55 and DD 0.60 mm, P = 0.048), whereas a tendency was seen for distensibility coefficient (DC) (II 10.38, ID 7.68 and ID 8.79, P = 0.058). Using a dominant model (II vs. ID/DD), men carrying the ACE D allele had lower pulsatile diameter change (P = 0.014) and DC (P = 0.017) than II carriers. Multiple regression analyses showed additional associations between the D allele and increased stiffness β, and reduced compliance coefficient. CONCLUSION Men carrying the ACE D allele have stiffer abdominal aortas compared with II carriers. Deranged abdominal aortic stiffness indicates impaired vessel wall integrity, which, along with other local predisposing factors, may be important in aneurysmal disease.
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Affiliation(s)
- L U Ljungberg
- Division of Cardiovascular Medicine, Department of Medical and Health Sciences, Faculty of Health Sciences, Linköping University, Linköping, Sweden.
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14
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Abstract
Nicotine has been shown to induce endothelial dysfunction, which is an early marker of atherosclerosis. Nicotine undergoes extensive metabolism in the liver, forming a number of major and minor metabolites. There are very limited data on the effect of nicotine metabolites on the cardiovascular system. This study investigates the effects of nicotine and the nicotine metabolites, cotinine, cotinine-N-oxide, nicotine-1'-N-oxide, norcotinine, trans-3'-hydroxycotinine, on angiotensin-converting enzyme (ACE) in human endothelial cells. Cultured endothelial cells obtained from human umbilical cord vein (HUVECs) were stimulated with nicotine or nicotine metabolites in concentrations similar to those observed in plasma during smoking. ACE activity and expression were analyzed using commercial kits. The results showed that nicotine and nicotine metabolites can increase both activity and expression of ACE. However, a marked individual variation in the response to the drugs was observed. This variation was not associated with the ACE insertion/deletion polymorphism. Tobacco contains numerous chemical compounds, and the underlying cause for development of atherosclerosis in smokers is probably multifactorial. The results from this study could explain one cellular mechanism by which smoking exerts negative effect on the vascular system.
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Affiliation(s)
- Liza U Ljungberg
- Division of Drug Research/Pharmacology, Department of Medical and Health Sciences, Faculty of Health Sciences, Linköping University, Linköping, Sweden
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