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Nguyen TK, Paone S, Baxter AA, Mayfosh AJ, Phan TK, Chan E, Peter K, Poon IKH, Thomas SR, Hulett MD. Heparanase promotes the onset and progression of atherosclerosis in apolipoprotein E gene knockout mice. Atherosclerosis 2024; 392:117519. [PMID: 38581737 DOI: 10.1016/j.atherosclerosis.2024.117519] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Revised: 01/31/2024] [Accepted: 03/12/2024] [Indexed: 04/08/2024]
Abstract
BACKGROUND AND AIMS Atherosclerosis is the primary underlying cause of myocardial infarction and stroke, which are the major causes of death globally. Heparanase (Hpse) is a pro-inflammatory extracellular matrix degrading enzyme that has been implicated in atherogenesis. However, to date the precise roles of Hpse in atherosclerosis and its mechanisms of action are not well defined. This study aims to provide new insights into the contribution of Hpse in different stages of atherosclerosis in vivo. METHODS We generated Hpse gene-deficient mice on the atherosclerosis-prone apolipoprotein E gene knockout (ApoE-/-) background to investigate the impact of Hpse gene deficiency on the initiation and progression of atherosclerosis after 6 and 14 weeks high-fat diet feeding, respectively. Atherosclerotic lesion development, blood serum profiles, lesion composition and aortic immune cell populations were evaluated. RESULTS Hpse-deficient mice exhibited significantly reduced atherosclerotic lesion burden in the aortic sinus and aorta at both time-points, independent of changes in plasma cholesterol levels. A significant reduction in the necrotic core size and an increase in smooth muscle cell content were also observed in advanced atherosclerotic plaques of Hpse-deficient mice. Additionally, Hpse deficiency reduced circulating and aortic levels of VCAM-1 at the initiation and progression stages of disease and circulating MCP-1 levels in the initiation but not progression stage. Moreover, the aortic levels of total leukocytes and dendritic cells in Hpse-deficient ApoE-/- mice were significantly decreased compared to control ApoE-/-mice at both disease stages. CONCLUSIONS This study identifies Hpse as a key pro-inflammatory enzyme driving the initiation and progression of atherosclerosis and highlighting the potential of Hpse inhibitors as novel anti-inflammatory treatments for cardiovascular disease.
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Affiliation(s)
- Tien K Nguyen
- Department of Biochemistry and Chemistry, La Trobe Institute for Molecular Science, La Trobe University, Melbourne, Victoria, 3086, Australia
| | - Stephanie Paone
- Department of Biochemistry and Chemistry, La Trobe Institute for Molecular Science, La Trobe University, Melbourne, Victoria, 3086, Australia
| | - Amy A Baxter
- Department of Biochemistry and Chemistry, La Trobe Institute for Molecular Science, La Trobe University, Melbourne, Victoria, 3086, Australia
| | - Alyce J Mayfosh
- Department of Biochemistry and Chemistry, La Trobe Institute for Molecular Science, La Trobe University, Melbourne, Victoria, 3086, Australia
| | - Thanh Kha Phan
- Department of Biochemistry and Chemistry, La Trobe Institute for Molecular Science, La Trobe University, Melbourne, Victoria, 3086, Australia
| | - Enoch Chan
- Department of Pathology, School of Biomedical Sciences, Faculty of Medicine & Health, University of New South Wales, Sydney, New South Wales, 2052, Australia
| | - Karlheinz Peter
- Atherothrombosis and Vascular Biology, Baker Heart and Diabetes Institute, Melbourne, Victoria, 3004, Australia
| | - Ivan K H Poon
- Department of Biochemistry and Chemistry, La Trobe Institute for Molecular Science, La Trobe University, Melbourne, Victoria, 3086, Australia
| | - Shane R Thomas
- Department of Pathology, School of Biomedical Sciences, Faculty of Medicine & Health, University of New South Wales, Sydney, New South Wales, 2052, Australia
| | - Mark D Hulett
- Department of Biochemistry and Chemistry, La Trobe Institute for Molecular Science, La Trobe University, Melbourne, Victoria, 3086, Australia.
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Chen Q, Xu X, Xie S, Sheng A, Han N, Tian Z, Wang X, Li F, Linhardt RJ, Zhang F, Jin L, Zhang Q, Chi L. Improving impact of heparan sulfate on the endothelial glycocalyx abnormalities in atherosclerosis as revealed by glycan-protein interactome. Carbohydr Polym 2024; 330:121834. [PMID: 38368111 DOI: 10.1016/j.carbpol.2024.121834] [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: 11/08/2023] [Revised: 01/12/2024] [Accepted: 01/15/2024] [Indexed: 02/19/2024]
Abstract
Endothelial dysfunction induced by oxidative stress is an early predictor of atherosclerosis, which can cause various cardiovascular diseases. The glycocalyx layer on the endothelial cell surface acts as a barrier to maintain endothelial biological function, and it can be impaired by oxidative stress. However, the mechanism of glycocalyx damage during the development of atherosclerosis remains largely unclear. Herein, we established a novel strategy to address these issues from the glycomic perspective that has long been neglected. Using countercharged fluorescence protein staining and quantitative mass spectrometry, we found that heparan sulfate, a major component of the glycocalyx, was structurally altered by oxidative stress. Comparative proteomics and protein microarray analysis revealed several new heparan sulfate-binding proteins, among which alpha-2-Heremans-Schmid glycoprotein (AHSG) was identified as a critical protein. The molecular mechanism of AHSG with heparin was characterized through several methods. A heparan analog could relieve atherosclerosis by protecting heparan sulfate from degradation during oxidative stress and by reducing the accumulation of AHSG at lesion sites. In the present study, the molecular mechanism of anti-atherosclerotic effect of heparin through interaction with AHSG was revealed. These findings provide new insights into understanding of glycocalyx damage in atherosclerosis and lead to the development of corresponding therapeutics.
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Affiliation(s)
- Qingqing Chen
- National Glycoengineering Research Center, Shandong University, Qingdao, Shandong 266237, China
| | - Xiaohui Xu
- National Glycoengineering Research Center, Shandong University, Qingdao, Shandong 266237, China
| | - Shaoshuai Xie
- National Glycoengineering Research Center, Shandong University, Qingdao, Shandong 266237, China
| | - Anran Sheng
- National Glycoengineering Research Center, Shandong University, Qingdao, Shandong 266237, China
| | - Naihan Han
- National Glycoengineering Research Center, Shandong University, Qingdao, Shandong 266237, China
| | - Zhenyu Tian
- The Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education, Chinese National Health Commission and Chinese Academy of Medical Sciences, Qilu Hospital, Shandong University, Jinan, Shandong 250021, China
| | - Xiaowei Wang
- The Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education, Chinese National Health Commission and Chinese Academy of Medical Sciences, Qilu Hospital, Shandong University, Jinan, Shandong 250021, China
| | - Fuchuan Li
- National Glycoengineering Research Center, Shandong University, Qingdao, Shandong 266237, China
| | - Robert J Linhardt
- Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, NY 12180, United States
| | - Fuming Zhang
- Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, NY 12180, United States
| | - Lan Jin
- National Glycoengineering Research Center, Shandong University, Qingdao, Shandong 266237, China.
| | - Qunye Zhang
- The Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education, Chinese National Health Commission and Chinese Academy of Medical Sciences, Qilu Hospital, Shandong University, Jinan, Shandong 250021, China.
| | - Lianli Chi
- National Glycoengineering Research Center, Shandong University, Qingdao, Shandong 266237, China.
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3
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Xu P, Cai X, Guan X, Xie W. Sulfoconjugation of protein peptides and glycoproteins in physiology and diseases. Pharmacol Ther 2023; 251:108540. [PMID: 37777160 PMCID: PMC10842354 DOI: 10.1016/j.pharmthera.2023.108540] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Revised: 09/21/2023] [Accepted: 09/25/2023] [Indexed: 10/02/2023]
Abstract
Protein sulfoconjugation, or sulfation, represents a critical post-translational modification (PTM) process that involves the attachment of sulfate groups to various positions of substrates within the protein peptides or glycoproteins. This process plays a dynamic and complex role in many physiological and pathological processes. Here, we summarize the importance of sulfation in the fields of oncology, virology, drug-induced liver injury (DILI), inflammatory bowel disease (IBD), and atherosclerosis. In oncology, sulfation is involved in tumor initiation, progression, and migration. In virology, sulfation influences viral entry, replication, and host immune response. In DILI, sulfation is associated with the incidence of DILI, where altered sulfation affects drug metabolism and toxicity. In IBD, dysregulation of sulfation compromises mucosal barrier and immune response. In atherosclerosis, sulfation influences the development of atherosclerosis by modulating the accumulation of lipoprotein, and the inflammation, proliferation, and migration of smooth muscle cells. The current review underscores the importance of further research to unravel the underlying mechanisms and therapeutic potential of targeting sulfoconjugation in various diseases. A better understanding of sulfation could facilitate the emergence of innovative diagnostic or therapeutic strategies.
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Affiliation(s)
- Pengfei Xu
- Center for Pharmacogenetics and Department of Pharmaceutical Sciences, University of Pittsburgh, Pittsburgh, PA 15261, USA; Department of Hepatobiliary and Pancreatic Surgery, Zhongnan Hospital of Wuhan University, School of Pharmaceutical Sciences, Wuhan University, Wuhan 430072, China
| | - Xinran Cai
- Center for Pharmacogenetics and Department of Pharmaceutical Sciences, University of Pittsburgh, Pittsburgh, PA 15261, USA
| | - Xiuchen Guan
- Department of Orthodontics, School of Stomatology, Capital Medical University, Beijing 100069, China
| | - Wen Xie
- Center for Pharmacogenetics and Department of Pharmaceutical Sciences, University of Pittsburgh, Pittsburgh, PA 15261, USA; Department of Pharmacology & Chemical Biology, University of Pittsburgh, Pittsburgh, PA 15261, USA.
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4
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Urschel K, Hug KP, Zuo H, Büttner M, Furtmair R, Kuehn C, Stumpfe FM, Botos B, Achenbach S, Yuan Y, Dietel B, Tauchi M. The Shear Stress-Regulated Expression of Glypican-4 in Endothelial Dysfunction In Vitro and Its Clinical Significance in Atherosclerosis. Int J Mol Sci 2023; 24:11595. [PMID: 37511353 PMCID: PMC10380765 DOI: 10.3390/ijms241411595] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2023] [Revised: 07/07/2023] [Accepted: 07/11/2023] [Indexed: 07/30/2023] Open
Abstract
Retention of circulating lipoproteins by their interaction with extracellular matrix molecules has been suggested as an underlying mechanism for atherosclerosis. We investigated the role of glypican-4 (GPC4), a heparan sulfate (HS) proteoglycan, in the development of endothelial dysfunction and plaque progression; Expression of GPC4 and HS was investigated in human umbilical vein/artery endothelial cells (HUVECs/HUAECs) using flow cytometry, qPCR, and immunofluorescent staining. Leukocyte adhesion was determined in HUVECs in bifurcation chamber slides under dynamic flow. The association between the degree of inflammation and GPC4, HS, and syndecan-4 expressions was analyzed in human carotid plaques; GPC4 was expressed in HUVECs/HUAECs. In HUVECs, GPC4 protein expression was higher in laminar than in non-uniform shear stress regions after a 1-day or 10-day flow (p < 0.01 each). The HS expression was higher under laminar flow after a 1 day (p < 0.001). Monocytic THP-1 cell adhesion to HUVECs was facilitated by GPC4 knock-down (p < 0.001) without affecting adhesion molecule expression. GPC4 and HS expression was lower in more-inflamed than in less-inflamed plaque shoulders (p < 0.05, each), especially in vulnerable plaque sections; Reduced expression of GPC4 was associated with atherogenic conditions, suggesting the involvement of GPC4 in both early and advanced stages of atherosclerosis.
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Affiliation(s)
- Katharina Urschel
- Department of Medicine 2—Cardiology and Angiology, Universitätsklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Schwabachanlage 12, 91054 Erlangen, Germany; (K.U.); (K.P.H.); (R.F.); (S.A.); (B.D.)
| | - Karsten P. Hug
- Department of Medicine 2—Cardiology and Angiology, Universitätsklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Schwabachanlage 12, 91054 Erlangen, Germany; (K.U.); (K.P.H.); (R.F.); (S.A.); (B.D.)
| | - Hanxiao Zuo
- School of Public Health, University of Alberta, 11405 87 Avenue, Edmonton, AB T6G 1C9, Canada; (H.Z.); (Y.Y.)
| | - Michael Büttner
- Department of Medicine 2—Cardiology and Angiology, Universitätsklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Schwabachanlage 12, 91054 Erlangen, Germany; (K.U.); (K.P.H.); (R.F.); (S.A.); (B.D.)
| | - Roman Furtmair
- Department of Medicine 2—Cardiology and Angiology, Universitätsklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Schwabachanlage 12, 91054 Erlangen, Germany; (K.U.); (K.P.H.); (R.F.); (S.A.); (B.D.)
| | - Constanze Kuehn
- Department of Medicine 2—Cardiology and Angiology, Universitätsklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Schwabachanlage 12, 91054 Erlangen, Germany; (K.U.); (K.P.H.); (R.F.); (S.A.); (B.D.)
| | - Florian M. Stumpfe
- Department of Obstetrics and Gynaecology, Universitätsklinikum Erlangen, Friedrich-Alexander University Erlangen-Nürnberg (FAU), Universitätsstraße 21-23, 91054 Erlangen, Germany;
| | - Balaz Botos
- Department of Vascular and Endovascular Surgery, General Hospital Nuremberg, Paracelsus Medical University, Breslauer Str. 201, 90471 Nuremberg, Germany;
| | - Stephan Achenbach
- Department of Medicine 2—Cardiology and Angiology, Universitätsklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Schwabachanlage 12, 91054 Erlangen, Germany; (K.U.); (K.P.H.); (R.F.); (S.A.); (B.D.)
| | - Yan Yuan
- School of Public Health, University of Alberta, 11405 87 Avenue, Edmonton, AB T6G 1C9, Canada; (H.Z.); (Y.Y.)
| | - Barbara Dietel
- Department of Medicine 2—Cardiology and Angiology, Universitätsklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Schwabachanlage 12, 91054 Erlangen, Germany; (K.U.); (K.P.H.); (R.F.); (S.A.); (B.D.)
| | - Miyuki Tauchi
- Department of Medicine 2—Cardiology and Angiology, Universitätsklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Schwabachanlage 12, 91054 Erlangen, Germany; (K.U.); (K.P.H.); (R.F.); (S.A.); (B.D.)
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5
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Eckersley A, Ozols M, Chen P, Tam V, Ward LJ, Hoyland JA, Trafford A, Yuan XM, Schiller HB, Chan D, Sherratt MJ. Peptide location fingerprinting identifies species- and tissue-conserved structural remodelling of proteins as a consequence of ageing and disease. Matrix Biol 2022; 114:108-137. [PMID: 35618217 DOI: 10.1016/j.matbio.2022.05.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Revised: 05/12/2022] [Accepted: 05/19/2022] [Indexed: 12/30/2022]
Abstract
Extracellular matrices (ECMs) in the intervertebral disc (IVD), lung and artery are thought to undergo age-dependant accumulation of damage by chronic exposure to mechanisms such as reactive oxygen species, proteases and glycation. It is unknown whether this damage accumulation is species-dependant (via differing lifespans and hence cumulative exposures) or whether it can influence the progression of age-related diseases such as atherosclerosis. Peptide location fingerprinting (PLF) is a new proteomic analysis method, capable of the non-targeted identification of structure-associated changes within proteins. Here we applied PLF to publicly available ageing human IVD (outer annulus fibrosus), ageing mouse lung and human arterial atherosclerosis datasets and bioinformatically identified novel target proteins alongside common age-associated differences within protein structures which were conserved between three ECM-rich organs, two species, three IVD tissue regions, sexes and in an age-related disease. We identify peptide yield differences across protein structures which coincide with biological regions, potentially reflecting the functional consequences of ageing or atherosclerosis for macromolecular assemblies (collagen VI), enzyme/inhibitor activity (alpha-2 macroglobulin), activation states (complement C3) and interaction states (laminins, perlecan, fibronectin, filamin-A, collagen XIV and apolipoprotein-B). Furthermore, we show that alpha-2 macroglobulin and collagen XIV exhibit possible shared structural consequences in IVD ageing and arterial atherosclerosis, providing novel links between an age-related disease and intrinsic ageing. Crucially, we also demonstrate that fibronectin, laminin beta chains and filamin-A all exhibit conserved age-associated structural differences between mouse lung and human IVD, providing evidence that ECM, and their associating proteins, may be subjected to potentially similar mechanisms or consequences of ageing across both species, irrespective of differences in lifespan and tissue function.
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Affiliation(s)
- Alexander Eckersley
- Division of Cell Matrix Biology & Regenerative Medicine, School of Biological Science, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, United Kingdom.
| | - Matiss Ozols
- Division of Cell Matrix Biology & Regenerative Medicine, School of Biological Science, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, United Kingdom; Department of Human Genetics, Wellcome Sanger Institute, Genome Campus, Hinxton, United Kingdom; British Heart Foundation Centre of Research Excellence, University of Cambridge, Cambridge, United Kingdom
| | - Peikai Chen
- Department of Orthopaedics and Traumatology, The University of Hong Kong-Shenzhen Hospital (HKU-SZH), Shenzhen, Guangdong 518053, China
| | - Vivian Tam
- School of Biomedical Sciences, The University of Hong Kong, Hong Kong, China
| | - Liam J Ward
- Department of Clinical Science, Intervention and Technology, Karolinska Institutet, Stockholm, Sweden; Department of Forensic Genetics and Forensic Toxicology, National Board of Forensic Medicine, Linköping, Sweden
| | - Judith A Hoyland
- Division of Cell Matrix Biology & Regenerative Medicine, School of Biological Science, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, United Kingdom
| | - Andrew Trafford
- Division of Cardiovascular Sciences, School of Biological Science, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, United Kingdom
| | - Xi-Ming Yuan
- Occupational and Environmental Medicine, Division of Prevention, Rehabilitation and Community Medicine, Department of Health, Medicine and Caring Sciences, Linköping University, Linköping, Sweden
| | - Herbert B Schiller
- Institute of Lung Health and Immunity and Comprehensive Pneumology Center, Helmholtz Munich, Member of the German Center for Lung Research (DZL), Munich, Germany
| | - Danny Chan
- School of Biomedical Sciences, The University of Hong Kong, Hong Kong, China
| | - Michael J Sherratt
- Division of Cell Matrix Biology & Regenerative Medicine, School of Biological Science, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, United Kingdom.
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6
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Patil NP, Gómez-Hernández A, Zhang F, Cancel L, Feng X, Yan L, Xia K, Takematsu E, Yang EY, Le V, Fisher ME, Gonzalez-Rodriguez A, Garcia-Monzon C, Tunnell J, Tarbell J, Linhardt RJ, Baker AB. Rhamnan sulfate reduces atherosclerotic plaque formation and vascular inflammation. Biomaterials 2022; 291:121865. [DOI: 10.1016/j.biomaterials.2022.121865] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2021] [Revised: 09/09/2022] [Accepted: 10/17/2022] [Indexed: 11/28/2022]
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7
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Wang Q, Chi L. The Alterations and Roles of Glycosaminoglycans in Human Diseases. Polymers (Basel) 2022; 14:polym14225014. [PMID: 36433141 PMCID: PMC9694910 DOI: 10.3390/polym14225014] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2022] [Revised: 11/14/2022] [Accepted: 11/15/2022] [Indexed: 11/22/2022] Open
Abstract
Glycosaminoglycans (GAGs) are a heterogeneous family of linear polysaccharides which are composed of a repeating disaccharide unit. They are also linked to core proteins to form proteoglycans (PGs). GAGs/PGs are major components of the cell surface and the extracellular matrix (ECM), and they display critical roles in development, normal function, and damage response in the body. Some properties (such as expression quantity, molecular weight, and sulfation pattern) of GAGs may be altered under pathological conditions. Due to the close connection between these properties and the function of GAGs/PGs, the alterations are often associated with enormous changes in the physiological/pathological status of cells and organs. Therefore, these GAGs/PGs may serve as marker molecules of disease. This review aimed to investigate the structural alterations and roles of GAGs/PGs in a range of diseases, such as atherosclerosis, cancer, diabetes, neurodegenerative disease, and virus infection. It is hoped to provide a reference for disease diagnosis, monitoring, prognosis, and drug development.
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Heparanase: A Novel Therapeutic Target for the Treatment of Atherosclerosis. Cells 2022; 11:cells11203198. [PMID: 36291066 PMCID: PMC9599978 DOI: 10.3390/cells11203198] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Revised: 10/07/2022] [Accepted: 10/07/2022] [Indexed: 11/16/2022] Open
Abstract
Cardiovascular disease (CVD) is the leading cause of death and disability worldwide, and its management places a huge burden on healthcare systems through hospitalisation and treatment. Atherosclerosis is a chronic inflammatory disease of the arterial wall resulting in the formation of lipid-rich, fibrotic plaques under the subendothelium and is a key contributor to the development of CVD. As such, a detailed understanding of the mechanisms involved in the development of atherosclerosis is urgently required for more effective disease treatment and prevention strategies. Heparanase is the only mammalian enzyme known to cleave heparan sulfate of heparan sulfate proteoglycans, which is a key component of the extracellular matrix and basement membrane. By cleaving heparan sulfate, heparanase contributes to the regulation of numerous physiological and pathological processes such as wound healing, inflammation, tumour angiogenesis, and cell migration. Recent evidence suggests a multifactorial role for heparanase in atherosclerosis by promoting underlying inflammatory processes giving rise to plaque formation, as well as regulating lesion stability. This review provides an up-to-date overview of the role of heparanase in physiological and pathological processes with a focus on the emerging role of the enzyme in atherosclerosis.
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Szeremeta A, Jura-Półtorak A, Zoń-Giebel A, Olczyk K, Komosińska-Vassev K. TNF-α Inhibitors in Combination with MTX Reduce Circulating Levels of Heparan Sulfate/Heparin and Endothelial Dysfunction Biomarkers (sVCAM-1, MCP-1, MMP-9 and ADMA) in Women with Rheumatoid Arthritis. J Clin Med 2022; 11:jcm11144213. [PMID: 35887981 PMCID: PMC9320287 DOI: 10.3390/jcm11144213] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2022] [Revised: 07/13/2022] [Accepted: 07/19/2022] [Indexed: 11/16/2022] Open
Abstract
Sulfated glycosaminoglycans (sGAGs) are likely to play an important role in the development and progression of rheumatoid arthritis (RA)-associated atherosclerosis. The present study investigated the effect of anti-tumor necrosis factor-α (anti-TNF-α) therapy in combination with methotrexate on plasma sGAG levels and serum markers of endothelial dysfunction. Among sGAG types, plasma chondroitin/dermatan sulfate (CS/DS) and heparan sulfate/heparin (HS/H) were characterized using electrophoretic fractionation. Serum levels of soluble vascular cell adhesion molecule-1 (sVCAM-1), monocyte chemoattractant protein-1 (MCP-1), matrix metalloproteinase-9 (MMP-9) and asymmetric dimethylarginine (ADMA) were measured by immunoassays. The measurements were carried out four times: at baseline and after 3, 9 and 15 months of anti-TNF-α therapy. All analyzed parameters, excluding ADMA, were significantly elevated in patients with RA before the implementation of biological therapy compared to healthy subjects. Performed anti-TNF-α treatment led to a successive decrease in HS/H levels toward normal values, without any effect on CS/DS levels in female RA patients. The treatment was also effective at lowering the serum levels of sVCAM-1, MCP-1, MMP-9 and ADMA. Moreover, a significant positive correlation was found between the circulating HS/H and the 28 joint disease activity score based on the erythrocyte sedimentation rate (DAS28-ESR, r = 0.408; p <0.05), MCP-1 (r = 0.398; p <0.05) and ADMA (r = 0.396; p <0.05) in patients before the first dose of TNF-α inhibitor. In conclusion, a beneficial effect of anti-TNF-α therapy on cell-surface heparan sulfate proteoglycans (HSPGs)/HS turnover and endothelial dysfunction was observed in this study. This was manifested by a decrease in blood HS/H levels and markers of endothelial activation, respectively. Moreover, the decrease in the concentration of HS/H in the blood of patients during treatment, progressing with the decline in disease activity, indicates that the plasma HS/H profile may be useful for monitoring the efficacy of anti-TNF-α treatment in patients with RA.
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Affiliation(s)
- Anna Szeremeta
- Department of Clinical Chemistry and Laboratory Diagnostics, Faculty of Pharmaceutical Sciences in Sosnowiec, Medical University of Silesia, Jedności 8, 41-200 Sosnowiec, Poland; (A.J.-P.); (K.O.); (K.K.-V.)
- Correspondence: ; Tel.: +48-32-364-11-50
| | - Agnieszka Jura-Półtorak
- Department of Clinical Chemistry and Laboratory Diagnostics, Faculty of Pharmaceutical Sciences in Sosnowiec, Medical University of Silesia, Jedności 8, 41-200 Sosnowiec, Poland; (A.J.-P.); (K.O.); (K.K.-V.)
| | - Aleksandra Zoń-Giebel
- Department of Rheumatology and Rehabilitation, Specialty Hospital No. 1, Żeromskiego 7, 41-902 Bytom, Poland;
| | - Krystyna Olczyk
- Department of Clinical Chemistry and Laboratory Diagnostics, Faculty of Pharmaceutical Sciences in Sosnowiec, Medical University of Silesia, Jedności 8, 41-200 Sosnowiec, Poland; (A.J.-P.); (K.O.); (K.K.-V.)
| | - Katarzyna Komosińska-Vassev
- Department of Clinical Chemistry and Laboratory Diagnostics, Faculty of Pharmaceutical Sciences in Sosnowiec, Medical University of Silesia, Jedności 8, 41-200 Sosnowiec, Poland; (A.J.-P.); (K.O.); (K.K.-V.)
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10
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Macrophages bind LDL using heparan sulfate and the perlecan protein core. J Biol Chem 2021; 296:100520. [PMID: 33684447 PMCID: PMC8027565 DOI: 10.1016/j.jbc.2021.100520] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2020] [Revised: 03/03/2021] [Accepted: 03/04/2021] [Indexed: 12/25/2022] Open
Abstract
The retention of low-density lipoprotein (LDL) is a key process in the pathogenesis of atherosclerosis and largely mediated via smooth-muscle cell-derived extracellular proteoglycans including the glycosaminoglycan chains. Macrophages can also internalize lipids via complexes with proteoglycans. However, the role of polarized macrophage-derived proteoglycans in binding LDL is unknown and important to advance our understanding of the pathogenesis of atherosclerosis. We therefore examined the identity of proteoglycans, including the pendent glycosaminoglycans, produced by polarized macrophages to gain insight into the molecular basis for LDL binding. Using the quartz crystal microbalance with dissipation monitoring technique, we established that classically activated macrophage (M1)- and alternatively activated macrophage (M2)-derived proteoglycans bind LDL via both the protein core and heparan sulfate (HS) in vitro. Among the proteoglycans secreted by macrophages, we found perlecan was the major protein core that bound LDL. In addition, we identified perlecan in the necrotic core as well as the fibrous cap of advanced human atherosclerotic lesions in the same regions as HS and colocalized with M2 macrophages, suggesting a functional role in lipid retention in vivo. These findings suggest that macrophages may contribute to LDL retention in the plaque by the production of proteoglycans; however, their contribution likely depends on both their phenotype within the plaque and the presence of enzymes, such as heparanase, that alter the secreted protein structure.
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Ma Z, Mao C, Jia Y, Fu Y, Kong W. Extracellular matrix dynamics in vascular remodeling. Am J Physiol Cell Physiol 2020; 319:C481-C499. [PMID: 32579472 DOI: 10.1152/ajpcell.00147.2020] [Citation(s) in RCA: 56] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Vascular remodeling is the adaptive response to various physiological and pathophysiological alterations that are closely related to aging and vascular diseases. Understanding the mechanistic regulation of vascular remodeling may be favorable for discovering potential therapeutic targets and strategies. The extracellular matrix (ECM), including matrix proteins and their degradative metalloproteases, serves as the main component of the microenvironment and exhibits dynamic changes during vascular remodeling. This process involves mainly the altered composition of matrix proteins, metalloprotease-mediated degradation, posttranslational modification of ECM proteins, and altered topographical features of the ECM. To date, adequate studies have demonstrated that ECM dynamics also play a critical role in vascular remodeling in various diseases. Here, we review these related studies, summarize how ECM dynamics control vascular remodeling, and further indicate potential diagnostic biomarkers and therapeutic targets in the ECM for corresponding vascular diseases.
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Affiliation(s)
- Zihan Ma
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Peking University, Key Laboratory of Molecular Cardiovascular Science, Ministry of Education, Beijing, China
| | - Chenfeng Mao
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Peking University, Key Laboratory of Molecular Cardiovascular Science, Ministry of Education, Beijing, China
| | - Yiting Jia
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Peking University, Key Laboratory of Molecular Cardiovascular Science, Ministry of Education, Beijing, China
| | - Yi Fu
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Peking University, Key Laboratory of Molecular Cardiovascular Science, Ministry of Education, Beijing, China
| | - Wei Kong
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Peking University, Key Laboratory of Molecular Cardiovascular Science, Ministry of Education, Beijing, China
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12
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Coronary artery disease with normal lipids and low coronary artery calcium in two women with high lipoprotein(a). J Clin Lipidol 2020; 14:186-188. [DOI: 10.1016/j.jacl.2019.12.009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2019] [Revised: 12/18/2019] [Accepted: 12/27/2019] [Indexed: 12/24/2022]
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13
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Wight TN. A role for proteoglycans in vascular disease. Matrix Biol 2018; 71-72:396-420. [PMID: 29499356 PMCID: PMC6110991 DOI: 10.1016/j.matbio.2018.02.019] [Citation(s) in RCA: 98] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2018] [Revised: 02/22/2018] [Accepted: 02/23/2018] [Indexed: 12/15/2022]
Abstract
The content of proteoglycans (PGs) is low in the extracellular matrix (ECM) of vascular tissue, but increases dramatically in all phases of vascular disease. Early studies demonstrated that glycosaminoglycans (GAGs) including chondroitin sulfate (CS), dermatan sulfate (DS), keratan sulfate (KS) and heparan sulfate (HS) accumulate in vascular lesions in both humans and in animal models in areas of the vasculature that are susceptible to disease initiation (such as at branch points) and are frequently coincident with lipid deposits. Later studies showed the GAGs were covalently attached to specific types of core proteins that accumulate in vascular lesions. These molecules include versican (CSPG), biglycan and decorin (DS/CSPGs), lumican and fibromodulin (KSPGs) and perlecan (HSPG), although other types of PGs are present, but in lesser quantities. While the overall molecular design of these macromolecules is similar, there is tremendous structural diversity among the different PG families creating multiple forms that have selective roles in critical events that form the basis of vascular disease. PGs interact with a variety of different molecules involved in disease pathogenesis. For example, PGs bind and trap serum components that accumulate in vascular lesions such as lipoproteins, amyloid, calcium, and clotting factors. PGs interact with other ECM components and regulate, in part, ECM assembly and turnover. PGs interact with cells within the lesion and alter the phenotypes of both resident cells and cells that invade the lesion from the circulation. A number of therapeutic strategies have been developed to target specific PGs involved in key pathways that promote vascular disease. This review will provide a historical perspective of this field of research and then highlight some of the evidence that defines the involvement of PGs and their roles in the pathogenesis of vascular disease.
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Affiliation(s)
- Thomas N Wight
- Matrix Biology Program, Benaroya Research Institute at Virginia Mason, Seattle, WA 98101, United States.
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14
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Cross-talk between renal lithogenesis and atherosclerosis: an unveiled link between kidney stone formation and cardiovascular diseases. Clin Sci (Lond) 2018; 132:615-626. [PMID: 29559506 DOI: 10.1042/cs20171574] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2017] [Revised: 01/10/2018] [Accepted: 01/12/2018] [Indexed: 12/19/2022]
Abstract
The prevalence of kidney stones and cardiovascular diseases (CVDs) are increasing throughout the world. Both diseases are chronic and characterized by accumulation of oxidized proteins and lipids in the renal tissue and arterial wall, respectively. Emerging studies have revealed a positive association between nephrolithiasis and CVDs. Based on preclinical and clinical evidences, this review discusses: (i) stone forming risk factors, crystal nucleation, aggregation, injury-induced crystal retention, and stone formation, (ii) CVD risk factors such as dyslipidemia, perturbation of gut microbiome, obesity, free radical-induced lipoprotein oxidation, and retention in the arterial wall, subsequent foam cell formation, and atherosclerosis, (iii) mechanism by which stone forming risk factors such as oxalate, calcium, uric acid, and infection contribute toward CVDs, and (iv) how CVD risk factors, such as cholesterol, phospholipids, and uric acid, contribute to kidney stone formation are described.
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15
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Lord MS, Tang F, Rnjak-Kovacina J, Smith JGW, Melrose J, Whitelock JM. The multifaceted roles of perlecan in fibrosis. Matrix Biol 2018; 68-69:150-166. [PMID: 29475023 DOI: 10.1016/j.matbio.2018.02.013] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2018] [Revised: 02/15/2018] [Accepted: 02/16/2018] [Indexed: 12/11/2022]
Abstract
Perlecan, or heparan sulfate proteoglycan 2 (HSPG2), is a ubiquitous heparan sulfate proteoglycan that has major roles in tissue and organ development and wound healing by orchestrating the binding and signaling of mitogens and morphogens to cells in a temporal and dynamic fashion. In this review, its roles in fibrosis are reviewed by drawing upon evidence from tissue and organ systems that undergo fibrosis as a result of an uncontrolled response to either inflammation or traumatic cellular injury leading to an over production of a collagen-rich extracellular matrix. This review focuses on examples of fibrosis that occurs in lung, liver, kidney, skin, kidney, neural tissues and blood vessels and its link to the expression of perlecan in that particular organ system.
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Affiliation(s)
- Megan S Lord
- Graduate School of Biomedical Engineering, UNSW Sydney, NSW 2052, Australia.
| | - Fengying Tang
- Graduate School of Biomedical Engineering, UNSW Sydney, NSW 2052, Australia
| | | | - James G W Smith
- University of Nottingham, Nottingham NG7 2RD, United Kingdom
| | - James Melrose
- Graduate School of Biomedical Engineering, UNSW Sydney, NSW 2052, Australia; Raymond Purves Bone and Joint Research Laboratory, Kolling Institute Northern Sydney Local Health District, St. Leonards, NSW 2065, Australia; Sydney Medical School, Northern, The University of Sydney, Royal North Shore Hospital, St. Leonards, NSW 2065, Australia
| | - John M Whitelock
- Graduate School of Biomedical Engineering, UNSW Sydney, NSW 2052, Australia
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16
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Cheow ESH, Cheng WC, Yap T, Dutta B, Lee CN, Kleijn DPVD, Sorokin V, Sze SK. Myocardial Injury Is Distinguished from Stable Angina by a Set of Candidate Plasma Biomarkers Identified Using iTRAQ/MRM-Based Approach. J Proteome Res 2017; 17:499-515. [DOI: 10.1021/acs.jproteome.7b00651] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Esther Sok Hwee Cheow
- School
of Biological Sciences, Nanyang Technological University, 60 Nanyang
Drive, Singapore 637551, Singapore
| | - Woo Chin Cheng
- Department of Surgery, Yong Loo Lin School of Medicine, National University of Singapore & Cardiovascular Research Institute, Singapore 119228, Singapore
| | - Terence Yap
- School
of Biological Sciences, Nanyang Technological University, 60 Nanyang
Drive, Singapore 637551, Singapore
| | - Bamaprasad Dutta
- School
of Biological Sciences, Nanyang Technological University, 60 Nanyang
Drive, Singapore 637551, Singapore
| | - Chuen Neng Lee
- Department of Surgery, Yong Loo Lin School of Medicine, National University of Singapore & Cardiovascular Research Institute, Singapore 119228, Singapore
- Department of Cardiac, Thoracic & Vascular Surgery, National University Heart Centre, Singapore 119074, Singapore
- Department
of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 119228, Singapore
| | - Dominique P. V. de Kleijn
- Department of Surgery, Yong Loo Lin School of Medicine, National University of Singapore & Cardiovascular Research Institute, Singapore 119228, Singapore
- Department of Vascular Surgery, University Medical Center Utrecht, The Netherlands & Interuniversity Cardiovascular Institute of The Netherlands, Utrecht 3508 GA, The Netherlands
| | - Vitaly Sorokin
- Department of Surgery, Yong Loo Lin School of Medicine, National University of Singapore & Cardiovascular Research Institute, Singapore 119228, Singapore
- Department of Cardiac, Thoracic & Vascular Surgery, National University Heart Centre, Singapore 119074, Singapore
| | - Siu Kwan Sze
- School
of Biological Sciences, Nanyang Technological University, 60 Nanyang
Drive, Singapore 637551, Singapore
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Comparative morphology and transcriptome analysis reveals distinct functions of the primary and secondary laticifer cells in the rubber tree. Sci Rep 2017; 7:3126. [PMID: 28600566 PMCID: PMC5466658 DOI: 10.1038/s41598-017-03083-3] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2016] [Accepted: 04/24/2017] [Indexed: 12/27/2022] Open
Abstract
Laticifers are highly specialized cells that synthesize and store natural rubber. Rubber trees (Hevea brasiliensis Muell. Arg.) contain both primary and secondary laticifers. Morphological and functional differences between the two types of laticifers are largely unknown, but such information is important for breeding and cultivation practices. Morphological comparison using paraffin sections revealed only distribution differences: the primary laticifers were distributed randomly, while the secondary laticifers were distributed in concentric rings. Using isolated laticifer networks, the primary laticifers were shown to develop via intrusive "budding" and formed necklace-like morphology, while the secondary laticifers developed straight and smooth cell walls. Comparative transcriptome analysis indicated that genes involved in cell wall modification, such as pectin esterase, lignin metabolic enzymes, and expansins, were highly up-regulated in the primary laticifers and correspond to its necklace-like morphology. Genes involved in defense against biotic stresses and rubber biosynthesis were highly up-regulated in the primary laticifers, whereas genes involved in abiotic stresses and dormancy were up-regulated in the secondary laticifers, suggesting that the primary laticifers are more adequately prepared to defend against biotic stresses, while the secondary laticifers are more adequately prepared to defend against abiotic stresses. Therefore, the two types of laticifers are morphologically and functionally distinct.
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18
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Cancel LM, Ebong EE, Mensah S, Hirschberg C, Tarbell JM. Endothelial glycocalyx, apoptosis and inflammation in an atherosclerotic mouse model. Atherosclerosis 2016; 252:136-146. [PMID: 27529818 DOI: 10.1016/j.atherosclerosis.2016.07.930] [Citation(s) in RCA: 89] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/16/2016] [Revised: 07/20/2016] [Accepted: 07/28/2016] [Indexed: 02/05/2023]
Abstract
BACKGROUND AND AIMS Previous experiments suggest that both increased endothelial cell apoptosis and endothelial surface glycocalyx shedding could play a role in the endothelial dysfunction and inflammation of athero-prone regions of the vasculature. We sought to elucidate the possibly synergistic mechanisms by which endothelial cell apoptosis and glycocalyx shedding promote atherogenesis. METHODS 4- to 6-week old male C57Bl/6 apolipoprotein E knockout (ApoE(-/-)) mice were fed a Western diet for 10 weeks and developed plaques in their brachiocephalic arteries. RESULTS Glycocalyx coverage and thickness were significantly reduced over the plaque region compared to the non-plaque region (coverage plaque: 71 ± 23%, non-plaque: 97 ± 3%, p = 0.02; thickness plaque: 0.85 ± 0.15 μm, non-plaque: 1.2 ± 0.21 μm, p = 0.006). Values in the non-plaque region were not different from those found in wild type mice fed a normal diet (coverage WT: 92 ± 3%, p = 0.7 vs. non-plaque ApoE(-/-), thickness WT: 1.1 ± 0.06 μm, p = 0.2 vs. non-plaque ApoE(-/-)). Endothelial cell apoptosis was significantly increased in ApoE(-/-) mice compared to wild type mice (ApoE(-/-):64.3 ± 33.0, WT: 1.1 ± 0.5 TUNEL-pos/cm, p = 2 × 10(-7)). The number of apoptotic endothelial cells per unit length was 2 times higher in the plaque region than in the non-plaque region of the same vessel (p = 3 × 10(-5)). Increased expression of matrix metalloproteinase 9 co-localized with glycocalyx shedding and plaque buildup. CONCLUSIONS Our results suggest that, in concert with endothelial apoptosis that increases lipid permeability, glycocalyx shedding initiated by inflammation facilitates monocyte adhesion and macrophage infiltration that promote lipid retention and the development of atherosclerotic plaques.
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Affiliation(s)
- Limary M Cancel
- Department of Biomedical Engineering, The City College of New York, New York, NY, USA.
| | - Eno E Ebong
- Department of Biomedical Engineering, The City College of New York, New York, NY, USA; Department of Neuroscience, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Solomon Mensah
- Department of Biomedical Engineering, The City College of New York, New York, NY, USA
| | - Carly Hirschberg
- Graduate Division Summer Undergraduate Research Program, Albert Einstein College of Medicine, Bronx, NY, USA
| | - John M Tarbell
- Department of Biomedical Engineering, The City College of New York, New York, NY, USA.
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19
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Lipoproteins as modulators of atherothrombosis: From endothelial function to primary and secondary coagulation. Vascul Pharmacol 2016; 82:1-10. [DOI: 10.1016/j.vph.2015.10.009] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2015] [Revised: 10/23/2015] [Accepted: 10/26/2015] [Indexed: 12/20/2022]
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20
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Schmidt K, Noureen A, Kronenberg F, Utermann G. Structure, function, and genetics of lipoprotein (a). J Lipid Res 2016; 57:1339-59. [PMID: 27074913 DOI: 10.1194/jlr.r067314] [Citation(s) in RCA: 305] [Impact Index Per Article: 38.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2016] [Indexed: 12/29/2022] Open
Abstract
Lipoprotein (a) [Lp(a)] has attracted the interest of researchers and physicians due to its intriguing properties, including an intragenic multiallelic copy number variation in the LPA gene and the strong association with coronary heart disease (CHD). This review summarizes present knowledge of the structure, function, and genetics of Lp(a) with emphasis on the molecular and population genetics of the Lp(a)/LPA trait, as well as aspects of genetic epidemiology. It highlights the role of genetics in establishing Lp(a) as a risk factor for CHD, but also discusses uncertainties, controversies, and lack of knowledge on several aspects of the genetic Lp(a) trait, not least its function.
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Affiliation(s)
- Konrad Schmidt
- Divisions of Human Genetics Medical University of Innsbruck, Innsbruck, Austria Genetic Epidemiology, Medical University of Innsbruck, Innsbruck, Austria
| | - Asma Noureen
- Genetic Epidemiology, Medical University of Innsbruck, Innsbruck, Austria
| | - Florian Kronenberg
- Genetic Epidemiology, Medical University of Innsbruck, Innsbruck, Austria
| | - Gerd Utermann
- Divisions of Human Genetics Medical University of Innsbruck, Innsbruck, Austria
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21
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Meen AJ, Drevon CA, Pejler G, Jenssen TG, Olstad OK, Åbrink M, Kolset SO. Serglycin protects against high fat diet-induced increase in serum LDL in mice. Glycoconj J 2015; 32:703-14. [PMID: 26391682 DOI: 10.1007/s10719-015-9621-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2015] [Revised: 09/02/2015] [Accepted: 09/08/2015] [Indexed: 12/21/2022]
Abstract
Proteoglycans have been implicated in regulation of lipoprotein metabolism. However, the impact of serglycin, the major proteoglycan expressed by many hematopoietic- and endothelial cells, on lipoprotein metabolism has not been explored. Here we addressed this issue by comparing several parameters of lipid metabolism in wild type (WT) and serglycin-/- mice, both at baseline and after feeding mice the Paigen diet. We show that, after feeding this diet for 20 weeks, serglycin deficient mice exhibited elevated concentrations of serum LDL in comparison with WT mice, thus suggesting that serglycin protects against an elevation of serum LDL levels after intake of a high-fat diet. Body weight increased in both groups, but only significantly in the serglycin-/- group. To explore the mechanism underlying this phenotype, genome-wide expression analysis was performed on liver tissues from WT and serglycin-/- mice. This analysis showed that serglycin-deficiency is associated with differential expression of numerous genes involved in the regulation of lipid metabolism, suggesting that the impact of serglycin on LDL levels may be related to effects at the gene expression level. In particular, several members of the CYP gene family were differently regulated in serglycin-/- compared with WT mice. Moreover, upstream regulator analysis suggested that several pro-inflammatory pathways, including the NFκB pathway, could contribute to the impact of serglycin on LDL. Hence, the elevation of serum LDL seen in serglycin-/- mice may be linked to dysregulated inflammatory responses. Taken together, our findings introduce serglycin as a novel player in processes that regulate lipid metabolism.
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Affiliation(s)
- Astri J Meen
- Department of Nutrition, Institute of Basic Medical Sciences, Faculty of Medicine, University of Oslo, Pb. 1046, Blindern, 0317, Oslo, Norway.
| | - Christian A Drevon
- Department of Nutrition, Institute of Basic Medical Sciences, Faculty of Medicine, University of Oslo, Pb. 1046, Blindern, 0317, Oslo, Norway
| | - Gunnar Pejler
- Department of Anatomy, Physiology, and Biochemistry, Swedish University of Agricultural Sciences, Uppsala, Sweden.,Department of Medical Biochemistry and Microbiology, Uppsala University, Uppsala, Sweden
| | - Trond G Jenssen
- Department of Transplant Medicine, Section of Nephrology, Oslo University Hospital, Rikshospitalet, Oslo, Norway.,Institute of Clinical Medicine, Faculty of Health Science, University of Tromsø, Tromsø, Norway
| | - Ole Kristoffer Olstad
- Department of Medical Biochemistry, Oslo University Hospital and University of Oslo, Oslo, Norway
| | - Magnus Åbrink
- Department of Biomedical Sciences and Veterinary Public Health, Swedish University of Agricultural Sciences, Uppsala, Sweden
| | - Svein O Kolset
- Department of Nutrition, Institute of Basic Medical Sciences, Faculty of Medicine, University of Oslo, Pb. 1046, Blindern, 0317, Oslo, Norway
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22
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Prostanoids regulate angiogenesis acting primarily on IP and EP4 receptors. Microvasc Res 2015; 101:127-34. [DOI: 10.1016/j.mvr.2015.07.004] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2015] [Revised: 07/02/2015] [Accepted: 07/15/2015] [Indexed: 02/02/2023]
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23
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The function of heparanase in diabetes and its complications. Can J Diabetes 2015; 37:332-8. [PMID: 24500561 DOI: 10.1016/j.jcjd.2013.05.008] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/23/2013] [Revised: 05/28/2013] [Accepted: 05/29/2013] [Indexed: 01/18/2023]
Abstract
Heparan sulfate proteoglycans are ubiquitous glycoproteins that contain several heparan sulfate polysaccharide side chains attached to a core protein. They function not only as a primary structural component of the extracellular matrix, but also provide a storage depot for bioactive molecules, such as basic fibroblast growth factor, vascular endothelial growth factor and lipoprotein lipase. Heparanase is an endoglycosidase that specifically hydrolyzes heparan sulfate into oligosaccharides. Recent studies have indicated that heparanase is engaged in the initiation and progression of diabetes, in addition to its associated complications. This review focuses on the participation of heparanase in the cleavage of heparan sulfate proteoglycans in pancreatic islets promoting beta cell death, promotion of atherosclerosis, and its role in cardiac metabolic switching in the early stage of cardiomyopathy during diabetes. Understanding the mechanisms by which heparanase is regulated in diabetes could provide a drug target to prevent diabetes and its complications.
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Xiong Y, Chan WY, Chua AWC, Feng J, Gopal P, Ong YS, Song C. Decellularized porcine saphenous artery for small-diameter tissue-engineered conduit graft. Artif Organs 2013; 37:E74-87. [PMID: 23566255 DOI: 10.1111/aor.12014] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Decellularized xenografts have been identified as potential scaffolds for small-diameter vascular substitutes. This study aimed to develop and investigate a biomechanically functional and biocompatible acellular conduit using decellularized porcine saphenous arteries (DPSAs), through a modified decellularization process using Triton X-100/NH4 OH solution and serum-containing medium. Histological and biochemical analysis indicated a high degree of cellular removal and preservation of the extracellular matrix. Bursting pressure tests showed that the DPSAs could withstand a pressure of 1854 ± 164 mm Hg. Assessment of in vitro cell adhesion and biocompatibility showed that porcine pulmonary artery endothelial cells were able to adhere and proliferate on DPSAs in static and rotational culture. After interposition into rabbit carotid arteries in vivo, DPSAs showed patency rates of 60% at 1 month and 50% at 3 months. No aneurysm and intimal hyperplasia were observed in any DPSAs. All patent grafts showed regeneration of vascular elements, and thrombotic occlusion was found to be the main cause of graft failure, probably due to remaining xenoantigens. In conclusion, this study showed the development and evaluation of a decellularization process with the potential to be used as small-diameter grafts.
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Affiliation(s)
- Yun Xiong
- Department of Plastic, Reconstructive & Aesthetic Surgery, Singapore General Hospital, Singapore, Singapore
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25
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Taleb A, Witztum JL, Tsimikas S. Oxidized phospholipids on apoB-100-containing lipoproteins: a biomarker predicting cardiovascular disease and cardiovascular events. Biomark Med 2012; 5:673-94. [PMID: 22003918 DOI: 10.2217/bmm.11.60] [Citation(s) in RCA: 137] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Oxidative stress is a well-known etiologic factor in the development of cardiovascular disease. Oxidation of lipoproteins, and in particular of low density lipoprotein, is a necessary if not obligatory mechanism for the generation of macrophage-derived foam cells, the first major initiating factor in the development of an atherosclerotic plaque. Oxidation of lipoproteins does not result in the generation of a single, defined molecular species, but of a variety of oxidation-specific epitopes, such as oxidized phospholipids and malondialdehyde-lysine epitopes. Unique monoclonal antibodies have been developed to bind these well-defined epitopes, and have been used in in vitro assays to detect them on circulating lipoproteins present in plasma. This article will summarize the accumulating clinical data of one oxidation-specific biomarker, oxidized phospholipids (OxPL) on apoB-100 lipoproteins. Elevated levels of OxPL/apoB predict the presence and progression of coronary, femoral and carotid artery disease, are increased following acute coronary syndromes and percutaneous coronary intervention, and predict the development of death, myocardial infarction, stroke and need for revascularization in unselected populations. OxPL/apoB levels are independent of traditional risk factors and the metabolic syndrome, and enhance the risk prediction of the Framingham Risk Score. The OxPLs measured in this assay reflect the biological activity of the most atherogenic lipoprotein(a) (Lp(a)) particles, reflected in patients with high plasma Lp(a) levels with small apo(a) isoforms. The predictive value of OxPL/apoB is amplified by Lp(a) and phospholipases such as lipoprotein-associated phospholipase A(2) and secretory phospholipase A(2), which are targets of therapy in clinical trials. This assay has now been validated in over 10,000 patients and efforts are underway to make it available to the research and clinical communities.
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Affiliation(s)
- Adam Taleb
- Department of Medicine, Division of Cardiology, University of California San Diego, La Jolla, CA 92093-0682, USA
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26
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Advanced glycation endproduct changes to Bruch's membrane promotes lipoprotein retention by lipoprotein lipase. THE AMERICAN JOURNAL OF PATHOLOGY 2011; 179:850-9. [PMID: 21801873 DOI: 10.1016/j.ajpath.2011.04.010] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2010] [Revised: 04/14/2011] [Accepted: 04/02/2011] [Indexed: 02/02/2023]
Abstract
Lipoprotein particles accumulate in Bruch's membrane before the development of basal deposits and drusen, two histopathologic lesions that define age-related macular degeneration (AMD). We therefore, sought to determine which molecules could participate in lipoprotein retention. Wild-type or lipoprotein lipase-deficient mice were injected with low-dose D-galactose or PBS subcutaneously for 8 weeks to induce advanced glycation endproduct (AGE) formation. Some mice were also injected with the AGE breaker phenacylphiazolium bromide and D-galactose. Rhodamine-labeled low-density lipoproteins were injected into mice, and the fluorescence was measured up to 72 hours later. AGEs, proteoglycans, and other lipid-retaining molecules were evaluated by IHC. Lipoprotein lipase distribution was assessed in AMD samples by IHC. D-galactose-treated mice retained lipoproteins in the retinal pigment epithelial and Bruch's membrane to a greater extent than either PBS- or phenacylphiazolium bromide/D-galactose-treated mice at 24 and 72 hours after injection (P ≤ 0.04). Immunolabeling for carboxymethyllysine, biglycan, and lipoprotein lipase was found in D-galactose-treated mice only. Mice deficient for lipoprotein lipase treated with D-galactose did not retain lipoproteins to any measureable extent. Human AMD samples had lipoprotein lipase labeling within drusen, basal deposits, and the choroid. Mice treated with D-galactose to induce AGE formation in Bruch's membrane retain intravenously injected lipoproteins. Our results suggest that lipoprotein retention in Bruch's membrane is mediated by lipoprotein lipase.
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27
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Rao G, Ding HG, Huang W, Le D, Maxhimer JB, Oosterhof A, van Kuppevelt T, Lum H, Lewis EJ, Reddy V, Prinz RA, Xu X. Reactive oxygen species mediate high glucose-induced heparanase-1 production and heparan sulphate proteoglycan degradation in human and rat endothelial cells: a potential role in the pathogenesis of atherosclerosis. Diabetologia 2011; 54:1527-38. [PMID: 21424539 DOI: 10.1007/s00125-011-2110-z] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/22/2010] [Accepted: 02/01/2011] [Indexed: 01/10/2023]
Abstract
AIMS/HYPOTHESIS The content of heparan sulphate is reduced in the endothelium under hyperglycaemic conditions and may contribute to the pathogenesis of atherosclerosis. Heparanase-1 (HPR1) specifically degrades heparan sulphate proteoglycans. We therefore sought to determine whether: (1) heparan sulphate reduction in endothelial cells is due to increased HPR1 production through increased reactive oxygen species (ROS) production; and (2) HPR1 production is increased in vivo in endothelial cells under hyperglycaemic and/or atherosclerotic conditions. METHODS HPR1 mRNA and protein levels in endothelial cells were analysed by RT-PCR and Western blot or HPR1 enzymatic activity assay, respectively. Cell surface heparan sulphate levels were analysed by FACS. HPR1 in the artery from control rats and a rat model of diabetes, and from patients under hyperglycaemic and/or atherosclerotic conditions was immunohistochemically examined. RESULTS High-glucose-induced HPR1 production and heparan sulphate degradation in three human endothelial cell lines, both of which were blocked by ROS scavengers, glutathione and N-acetylcysteine. Exogenous H(2)O(2) induced HPR1 production, subsequently leading to decreased cell surface heparan sulphate levels. HPR1 content was significantly increased in endothelial cells in the arterial walls of a rat model of diabetes. Clinical studies revealed that HPR1 production was increased in endothelial cells under hyperglycaemic conditions, and in endothelial cells and macrophages in atherosclerotic lesions. CONCLUSIONS/INTERPRETATION Hyperglycaemia induces HPR1 production and heparan sulphate degradation in endothelial cells through ROS. HPR1 production is increased in endothelial cells from a rat model of diabetes, and in macrophages in the atherosclerotic lesions of diabetic and non-diabetic patients. Increased HPR1 production may contribute to the pathogenesis and progression of atherosclerosis.
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Affiliation(s)
- G Rao
- Department of General Surgery, Rush University Medical Center, 1653 W Congress Parkway, Chicago, IL 60612, USA
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Shibata M, Shigematsu T, Hatamura I, Saji F, Mune S, Kunimoto K, Hanba Y, Shiizaki K, Sakaguchi T, Negi S. Reduced expression of perlecan in the aorta of secondary hyperparathyroidism model rats with medial calcification. Ren Fail 2010; 32:214-23. [PMID: 20199184 DOI: 10.3109/08860220903367544] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
BACKGROUND Vascular calcification is an important complication that worsens the prognosis for dialysis patients, although its detailed molecular mechanisms are still unknown. METHODS We produced a rat model for vascular calcification with hyperphosphatasemia and hyperparathyroidism, performing a 5/6 nephrectomy and providing a high-phosphorus, low-calcium diet for eight weeks. We examined mRNA obtained from the calcified aortae using microarray analysis, and searched for alterations in gene expression specifically in the calcified lesions. RESULTS Medial calcification was demonstrated in the abdominal aorta of 12 out of 42 hyperparathyroidism rats. In the aortae of hyperparathyroid rats with vascular calcification, the genes for heparan sulfate proteoglycans, including perlecan, were found to be down-regulated using microarray analysis and real time PCR. Immunohistochemistry also demonstrated reduced production of perlecan in the aortae of hyperparathyroid rats. DISCUSSION Perlecan is a major component of the vascular wall basement membrane and may play a role in protecting vascular smooth muscle cells from inflammatory cells and various toxins. It has also been reported that heparan sulfate chains may inhibit osteogenesis. Our findings indicate that perlecan may protect vascular smooth muscle cells from various factors that promote vascular calcification. CONCLUSIONS It may be that reduced expression of perlecan in the calcified aortae of hyperparathyroid rats is a risk factor for vascular calcification.
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Affiliation(s)
- Maki Shibata
- Division of Nephrology, International Medical Center of Japan, Wakayama Medical University, Wakayama, Japan
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Collagen-bound LDL modifies endothelial cell adhesion to type V collagen: Implications for atherosclerosis. Open Life Sci 2009. [DOI: 10.2478/s11535-009-0047-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
AbstractLow density lipoprotein (LDL) is retained in the extracellular matrix of the arterial wall where it is considered to be atherogenic, but little is known about how cell adhesion to the matrix is affected by collagen-bound LDL. We tested the effect of native, oxidized and acetylated LDL reacted with adsorbed monomeric type I, III and V collagen on endothelial cell adhesion to collagen using a colorimetric adhesion assay. We found that none of the LDL species affected adhesion to type I and III collagen, but that collagen-bound native and acetylated LDL enhanced attachment to type V collagen, whereas bound oxidized LDL inhibited adhesion to this collagen. We therefore suggest that oxidized LDL associated with type V collagen in the arterial wall would favor de-endothelialization and contribute to atherogenesis and thrombosis.
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30
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Koskinas KC, Chatzizisis YS, Baker AB, Edelman ER, Stone PH, Feldman CL. The role of low endothelial shear stress in the conversion of atherosclerotic lesions from stable to unstable plaque. Curr Opin Cardiol 2009; 24:580-90. [PMID: 19809311 PMCID: PMC10926252 DOI: 10.1097/hco.0b013e328331630b] [Citation(s) in RCA: 84] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
PURPOSE OF REVIEW Local hemodynamic factors are major determinants of the natural history of individual atherosclerotic plaque progression in coronary arteries. The purpose of this review is to summarize the role of low endothelial shear stress (ESS) in the transition of early, stable plaques to high-risk atherosclerotic lesions. RECENT FINDINGS Low ESS regulates multiple pathways within the atherosclerotic lesion, resulting in intense vascular inflammation, progressive lipid accumulation, and formation and expansion of a necrotic core. Upregulation of matrix-degrading proteases promotes thinning of the fibrous cap, severe internal elastic lamina fragmentation, and extracellular matrix remodeling. In the setting of plaque-induced changes of the local ESS, coronary regions persistently exposed to very low ESS develop excessive expansive remodeling, which further exacerbates the proinflammatory low ESS stimulus. Recent studies suggest that the effect of recognized cardioprotective medications may be mediated by attenuation of the proinflammatory effect of the low ESS environment in which a plaque develops. SUMMARY Low ESS determines the severity of vascular inflammation, the status of the extracellular matrix, and the nature of wall remodeling, all of which synergistically promote the transition of stable lesions to thin cap fibroatheromata that may rupture with subsequent formation of an occlusive thrombus and result in an acute coronary syndrome.
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Affiliation(s)
| | - Yiannis S. Chatzizisis
- Cardiovascular Division, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA
- Harvard-MIT Division of Health Sciences & Technology, Massachusetts Institute of Technology, Cambridge, MA
| | - Aaron B. Baker
- Harvard-MIT Division of Health Sciences & Technology, Massachusetts Institute of Technology, Cambridge, MA
| | - Elazer R. Edelman
- Cardiovascular Division, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA
- Harvard-MIT Division of Health Sciences & Technology, Massachusetts Institute of Technology, Cambridge, MA
| | - Peter H. Stone
- Cardiovascular Division, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA
| | - Charles L. Feldman
- Cardiovascular Division, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA
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Devaraj S, Yun JM, Adamson G, Galvez J, Jialal I. C-reactive protein impairs the endothelial glycocalyx resulting in endothelial dysfunction. Cardiovasc Res 2009; 84:479-84. [PMID: 19620133 DOI: 10.1093/cvr/cvp249] [Citation(s) in RCA: 65] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
AIMS Inflammation is pivotal in atherosclerosis and a key early step is endothelial dysfunction. C-reactive protein, the prototypic marker of inflammation, and cardiovascular risk marker have been shown to promote atherogenesis. Increased levels of C-reactive protein are associated with endothelial dysfunction. The glycocalyx decorates the luminal surface and affords critical protection of the endothelium. Thus, the aim of the study was to examine the effect of C-reactive protein on the endothelial glycocalyx. METHODS AND RESULTS Human aortic endothelial cells (HAECs) were incubated with C-reactive protein at different concentrations (0, 12.5, 25, and 50 microg/mL) with boiled C-reactive protein as a control. For in vivo experiments, human C-reactive protein was injected into rats and human serum albumin was used as a control. Endothelial glycocalyx thickness was examined by transmission electron microscopy. Hyaluronan (HA) was examined in the supernatant of HAECs and in plasma and surface expression of heparan sulfate (HS) was quantified. C-reactive protein dose-dependently increased HA release in vitro and in vivo (P < 0.01). Also, glycocalyx thickness was significantly decreased (P < 0.05). Western blotting for HS showed significant reduction in expression of HS, one of the main glycosaminoglycans in the glycocalyx, with C-reactive protein treatment. There was a significant positive correlation between HA release and monocyte-endothelial cell adhesion, plasminogen activator inhibitor-1, and intercellular adhesion molecule-1 release and a negative correlation with endothelial nitric oxide synthase activity. CONCLUSION Collectively, these data suggest that C-reactive protein impairs glycocalyx function, resulting in endothelial dysfunction.
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Affiliation(s)
- Sridevi Devaraj
- Laboratory for Atherosclerosis and Metabolic Research, Department of Medical Pathology and Laboratory Medicine, UC Davis Medical Center, Sacramento, CA 95817, USA
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Abstract
Atherosclerosis is an inflammatory disease of the wall of large- and medium-sized arteries that is precipitated by elevated levels of low-density lipoprotein (LDL) cholesterol in the blood. Although dendritic cells (DCs) and lymphocytes are found in the adventitia of normal arteries, their number is greatly expanded and their distribution changed in human and mouse atherosclerotic arteries. Macrophages, DCs, foam cells, lymphocytes, and other inflammatory cells are found in the intimal atherosclerotic lesions. Beneath these lesions, adventitial leukocytes organize in clusters that resemble tertiary lymphoid tissues. Experimental interventions can reduce the number of available blood monocytes, from which macrophages and most DCs and foam cells are derived, and reduce atherosclerotic lesion burden without altering blood lipids. Under proatherogenic conditions, nitric oxide production from endothelial cells is reduced and the burden of reactive oxygen species (ROS) and advanced glycation end products (AGE) is increased. Incapacitating ROS-generating NADPH oxidase or the receptor for AGE (RAGE) has beneficial effects. Targeting inflammatory adhesion molecules also reduces atherosclerosis. Conversely, removing or blocking IL-10 or TGF-beta accelerates atherosclerosis. Regulatory T cells and B1 cells secreting natural antibodies are atheroprotective. This review summarizes our current understanding of inflammatory and immune mechanisms in atherosclerosis.
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Affiliation(s)
- Elena Galkina
- Department of Microbiology and Molecular Cell Biology, Eastern Virginia Medical School, Norfolk, Virginia 23507-1696, USA.
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Abstract
PURPOSE OF REVIEW To review emerging data on the relationship between lipoprotein(a) and oxidized phospholipids. RECENT FINDINGS We have recently proposed that a unique physiological role of lipoprotein(a) may be to bind and transport proinflammatory oxidized phospholipids and that this interaction may mediate a common biological influence on cardiovascular disease. In a large series of clinical studies performed to date, a very strong correlation was found between plasma levels of lipoprotein(a) and the content of oxidized phospholipids on apolipoprotein B-100 particles (OxPL/apoB), measured by monoclonal antibody E06, which binds the phosphocholine head group of oxidized phospholipids but not native phospholipids. The correlation of OxPL/apoB to lipoprotein(a) is very strong in individuals with small apolipoprotein(a) isoforms (r = approximately 0.95) and modest in individuals with large isoforms (r = approximately 0.60). In-vitro studies have demonstrated that the vast majority of oxidized phospholipids detected by E06 are bound to lipoprotein(a) in human plasma. A similarly strong association with oxidized phospholipids was also documented in transgenic mice overexpressing lipoprotein(a), even in mice not fed atherogenic diets or with overt atherosclerosis. SUMMARY A better understanding of the ability of human lipoprotein(a) to bind oxidized phospholipids may allow clinically important insights into the role of oxidized phospholipids and lipoprotein(a) in human atherogenesis and cardiovascular disease and may provide novel diagnostic tools and therapeutic interventions aimed at measuring and treating elevated levels of OxPL/apoB and lipoprotein(a).
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Affiliation(s)
- Sotirios Tsimikas
- Vascular Medicine Program, Department of Medicine, University of California San Diego, Cardiovascular Diseases, La Jolla, CA 92037-0975, USA.
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Tran-Lundmark K, Tran PK, Paulsson-Berne G, Fridén V, Soininen R, Tryggvason K, Wight TN, Kinsella MG, Borén J, Hedin U. Heparan sulfate in perlecan promotes mouse atherosclerosis: roles in lipid permeability, lipid retention, and smooth muscle cell proliferation. Circ Res 2008; 103:43-52. [PMID: 18596265 DOI: 10.1161/circresaha.108.172833] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Heparan sulfate (HS) has been proposed to be antiatherogenic through inhibition of lipoprotein retention, inflammation, and smooth muscle cell proliferation. Perlecan is the predominant HS proteoglycan in the artery wall. Here, we investigated the role of perlecan HS chains using apoE null (ApoE0) mice that were cross-bred with mice expressing HS-deficient perlecan (Hspg2(Delta3/Delta3)). Morphometry of cross-sections from aortic roots and en face preparations of whole aortas revealed a significant decrease in lesion formation in ApoE0/Hspg2(Delta3/Delta3) mice at both 15 and 33 weeks. In vitro, binding of labeled mouse triglyceride-rich lipoproteins and human LDL to total extracellular matrix, as well as to purified proteoglycans, prepared from ApoE0/Hspg2(Delta3/Delta3) smooth muscle cells was reduced. In vivo, at 20 minutes influx of human (125)I-LDL or mouse triglyceride-rich lipoproteins into the aortic wall was increased in ApoE0/Hspg2(Delta3/Delta3) mice compared to ApoE0 mice. However, at 72 hours accumulation of (125)I-LDL was similar in ApoE0/Hspg2(Delta3/Delta3) and ApoE0 mice. Immunohistochemistry of lesions from ApoE0/Hspg2(Delta3/Delta3) mice showed decreased staining for apoB and increased smooth muscle alpha-actin content, whereas accumulation of CD68-positive inflammatory cells was unchanged. We conclude that the perlecan HS chains are proatherogenic in mice, possibly through increased lipoprotein retention, altered vascular permeability, or other mechanisms. The ability of HS to inhibit smooth muscle cell growth may also influence development as well as instability of lesions.
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Affiliation(s)
- Karin Tran-Lundmark
- Department of Molecular Medicine and Surgery, Karolinska University Hospital, Karolinska Institutet, SE-17176 Stockholm, Sweden.
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Tran-Lundmark K, Tran PK, Paulsson-Berne G, Fridén V, Soininen R, Tryggvason K, Wight TN, Kinsella MG, Borén J, Hedin U. Heparan Sulfate in Perlecan Promotes Mouse Atherosclerosis. Circ Res 2008. [DOI: 10.1161/circresaha.107.172833] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Heparan sulfate (HS) has been proposed to be antiatherogenic through inhibition of lipoprotein retention, inflammation, and smooth muscle cell proliferation. Perlecan is the predominant HS proteoglycan in the artery wall. Here, we investigated the role of perlecan HS chains using apoE null (ApoE0) mice that were cross-bred with mice expressing HS-deficient perlecan (
Hspg2
Δ3/Δ3
). Morphometry of cross-sections from aortic roots and en face preparations of whole aortas revealed a significant decrease in lesion formation in ApoE0/
Hspg2
Δ3/Δ3
mice at both 15 and 33 weeks. In vitro, binding of labeled mouse triglyceride-rich lipoproteins and human LDL to total extracellular matrix, as well as to purified proteoglycans, prepared from ApoE0/
Hspg2
Δ3/Δ3
smooth muscle cells was reduced. In vivo, at 20 minutes influx of human
125
I-LDL or mouse triglyceride-rich lipoproteins into the aortic wall was increased in ApoE0/
Hspg2
Δ3/Δ3
mice compared to ApoE0 mice. However, at 72 hours accumulation of
125
I-LDL was similar in ApoE0/
Hspg2
Δ3/Δ3
and ApoE0 mice. Immunohistochemistry of lesions from ApoE0/
Hspg2
Δ3/Δ3
mice showed decreased staining for apoB and increased smooth muscle α-actin content, whereas accumulation of CD68-positive inflammatory cells was unchanged. We conclude that the perlecan HS chains are proatherogenic in mice, possibly through increased lipoprotein retention, altered vascular permeability, or other mechanisms. The ability of HS to inhibit smooth muscle cell growth may also influence development as well as instability of lesions.
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Affiliation(s)
- Karin Tran-Lundmark
- From the Department of Molecular Medicine and Surgery (K.T.-L., P.-K.T., U.H.), Karolinska Institutet, Stockholm, Sweden; the Center for Molecular Medicine (G.P.-B.), Karolinska Institutet, Stockholm, Sweden; Sahlgrenska Center for Cardiovascular and Metabolic Research/Wallenberg Laboratory, Department of Molecular and Clinical Medicine (V.F., J.B.), Göteborg University, Gothenburg, Sweden; the Department of Medical Biochemistry and Molecular Biology (R.S.), Biocenter Oulu, University of Oulu,
| | - Phan-Kiet Tran
- From the Department of Molecular Medicine and Surgery (K.T.-L., P.-K.T., U.H.), Karolinska Institutet, Stockholm, Sweden; the Center for Molecular Medicine (G.P.-B.), Karolinska Institutet, Stockholm, Sweden; Sahlgrenska Center for Cardiovascular and Metabolic Research/Wallenberg Laboratory, Department of Molecular and Clinical Medicine (V.F., J.B.), Göteborg University, Gothenburg, Sweden; the Department of Medical Biochemistry and Molecular Biology (R.S.), Biocenter Oulu, University of Oulu,
| | - Gabrielle Paulsson-Berne
- From the Department of Molecular Medicine and Surgery (K.T.-L., P.-K.T., U.H.), Karolinska Institutet, Stockholm, Sweden; the Center for Molecular Medicine (G.P.-B.), Karolinska Institutet, Stockholm, Sweden; Sahlgrenska Center for Cardiovascular and Metabolic Research/Wallenberg Laboratory, Department of Molecular and Clinical Medicine (V.F., J.B.), Göteborg University, Gothenburg, Sweden; the Department of Medical Biochemistry and Molecular Biology (R.S.), Biocenter Oulu, University of Oulu,
| | - Vincent Fridén
- From the Department of Molecular Medicine and Surgery (K.T.-L., P.-K.T., U.H.), Karolinska Institutet, Stockholm, Sweden; the Center for Molecular Medicine (G.P.-B.), Karolinska Institutet, Stockholm, Sweden; Sahlgrenska Center for Cardiovascular and Metabolic Research/Wallenberg Laboratory, Department of Molecular and Clinical Medicine (V.F., J.B.), Göteborg University, Gothenburg, Sweden; the Department of Medical Biochemistry and Molecular Biology (R.S.), Biocenter Oulu, University of Oulu,
| | - Raija Soininen
- From the Department of Molecular Medicine and Surgery (K.T.-L., P.-K.T., U.H.), Karolinska Institutet, Stockholm, Sweden; the Center for Molecular Medicine (G.P.-B.), Karolinska Institutet, Stockholm, Sweden; Sahlgrenska Center for Cardiovascular and Metabolic Research/Wallenberg Laboratory, Department of Molecular and Clinical Medicine (V.F., J.B.), Göteborg University, Gothenburg, Sweden; the Department of Medical Biochemistry and Molecular Biology (R.S.), Biocenter Oulu, University of Oulu,
| | - Karl Tryggvason
- From the Department of Molecular Medicine and Surgery (K.T.-L., P.-K.T., U.H.), Karolinska Institutet, Stockholm, Sweden; the Center for Molecular Medicine (G.P.-B.), Karolinska Institutet, Stockholm, Sweden; Sahlgrenska Center for Cardiovascular and Metabolic Research/Wallenberg Laboratory, Department of Molecular and Clinical Medicine (V.F., J.B.), Göteborg University, Gothenburg, Sweden; the Department of Medical Biochemistry and Molecular Biology (R.S.), Biocenter Oulu, University of Oulu,
| | - Thomas N. Wight
- From the Department of Molecular Medicine and Surgery (K.T.-L., P.-K.T., U.H.), Karolinska Institutet, Stockholm, Sweden; the Center for Molecular Medicine (G.P.-B.), Karolinska Institutet, Stockholm, Sweden; Sahlgrenska Center for Cardiovascular and Metabolic Research/Wallenberg Laboratory, Department of Molecular and Clinical Medicine (V.F., J.B.), Göteborg University, Gothenburg, Sweden; the Department of Medical Biochemistry and Molecular Biology (R.S.), Biocenter Oulu, University of Oulu,
| | - Michael G. Kinsella
- From the Department of Molecular Medicine and Surgery (K.T.-L., P.-K.T., U.H.), Karolinska Institutet, Stockholm, Sweden; the Center for Molecular Medicine (G.P.-B.), Karolinska Institutet, Stockholm, Sweden; Sahlgrenska Center for Cardiovascular and Metabolic Research/Wallenberg Laboratory, Department of Molecular and Clinical Medicine (V.F., J.B.), Göteborg University, Gothenburg, Sweden; the Department of Medical Biochemistry and Molecular Biology (R.S.), Biocenter Oulu, University of Oulu,
| | - Jan Borén
- From the Department of Molecular Medicine and Surgery (K.T.-L., P.-K.T., U.H.), Karolinska Institutet, Stockholm, Sweden; the Center for Molecular Medicine (G.P.-B.), Karolinska Institutet, Stockholm, Sweden; Sahlgrenska Center for Cardiovascular and Metabolic Research/Wallenberg Laboratory, Department of Molecular and Clinical Medicine (V.F., J.B.), Göteborg University, Gothenburg, Sweden; the Department of Medical Biochemistry and Molecular Biology (R.S.), Biocenter Oulu, University of Oulu,
| | - Ulf Hedin
- From the Department of Molecular Medicine and Surgery (K.T.-L., P.-K.T., U.H.), Karolinska Institutet, Stockholm, Sweden; the Center for Molecular Medicine (G.P.-B.), Karolinska Institutet, Stockholm, Sweden; Sahlgrenska Center for Cardiovascular and Metabolic Research/Wallenberg Laboratory, Department of Molecular and Clinical Medicine (V.F., J.B.), Göteborg University, Gothenburg, Sweden; the Department of Medical Biochemistry and Molecular Biology (R.S.), Biocenter Oulu, University of Oulu,
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Bergmark C, Dewan A, Orsoni A, Merki E, Miller ER, Shin MJ, Binder CJ, Hörkkö S, Krauss RM, Chapman MJ, Witztum JL, Tsimikas S. A novel function of lipoprotein [a] as a preferential carrier of oxidized phospholipids in human plasma. J Lipid Res 2008; 49:2230-9. [PMID: 18594118 DOI: 10.1194/jlr.m800174-jlr200] [Citation(s) in RCA: 266] [Impact Index Per Article: 16.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Oxidized phospholipids (OxPLs) on apolipoprotein B-100 (apoB-100) particles are strongly associated with lipoprotein [a] (Lp[a]). In this study, we evaluated whether Lp[a] is preferentially the carrier of OxPL in human plasma. The content of OxPL on apoB-100 particles was measured with monoclonal antibody E06, which recognizes the phosphocholine (PC) headgroup of oxidized but not native phospholipids. To assess whether OxPLs were preferentially bound by Lp[a] as opposed to other lipoproteins, immunoprecipitation and ultracentrifugation experiments, in vitro transfer studies, and chemiluminescent ELISAs were performed. Immunoprecipitation of Lp[a] from human plasma with an apolipoprotein [a] (apo[a])-specific antibody demonstrated that more than 85% of E06 reactivity (i.e., OxPL) coimmunoprecipitated with Lp[a]. Ultracentrifugation experiments showed that nearly all OxPLs were found in fractions containing apo[a], as opposed to other apolipoproteins. In vitro transfer studies showed that oxidized LDL preferentially donates OxPLs to Lp[a], as opposed to LDL, in a time- and temperature-dependent manner, even in aqueous buffer. Approximately 50% of E06 immunoreactivity could be extracted from isolated Lp[a] following exposure of plasma to various lipid solvents. These data demonstrate that Lp[a] is the preferential carrier of PC-containing OxPL in human plasma. This unique property of Lp[a] suggests novel insights into its physiological function and mechanisms of atherogenicity.
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Affiliation(s)
- Claes Bergmark
- Department of Vascular Surgery, Karolinska University Hospital, Karolinska Institute, Stockholm, Sweden
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Shankar VK, Handa A, Hands L. Endogenous heparin activity is decreased in peripheral arterial occlusive disease. J Vasc Surg 2008; 47:1033-8. [DOI: 10.1016/j.jvs.2007.11.030] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2007] [Revised: 11/07/2007] [Accepted: 11/12/2007] [Indexed: 11/30/2022]
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Nieuwdorp M, Meuwese MC, Mooij HL, Ince C, Broekhuizen LN, Kastelein JJP, Stroes ESG, Vink H. Measuring endothelial glycocalyx dimensions in humans: a potential novel tool to monitor vascular vulnerability. J Appl Physiol (1985) 2008; 104:845-52. [DOI: 10.1152/japplphysiol.00440.2007] [Citation(s) in RCA: 148] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
The endothelial glycocalyx is increasingly considered as an intravascular compartment that protects the vessel wall against pathogenic insults. The purpose of this study was to translate an established experimental method of estimating capillary glycocalyx dimension into a clinically useful tool and to assess its reproducibility in humans. We first evaluated by intravital microscopy the relation between the distance between the endothelium and erythrocytes, as a measure of glycocalyx thickness, and the transient widening of the erythrocyte column on glycocalyx compression by passing leukocytes in hamster cremaster muscle capillaries. We subsequently assessed sublingual microvascular glycocalyx thickness in 24 healthy men using orthogonal polarization spectral imaging. In parallel, systemic glycocalyx volume (using a previously published tracer dilution technique) as well as cardiovascular risk profiles were assessed. Estimates of microvascular glycocalyx dimension from the transient erythrocyte widening correlated well with the size of the erythrocyte-endothelium gap ( r = 0.63). Measurements in humans were reproducible (0.58 ± 0.16 and 0.53 ± 0.15 μm, coefficient of variance 15 ± 5%). In univariate analysis, microvascular glycocalyx thickness significantly correlated with systemic glycocalyx volume ( r = 0.45), fasting plasma glucose ( r = 0.43), and high-density lipoprotein-cholesterol ( r = 0.40) and correlated negatively with low-density lipoprotein-cholesterol ( r = −0.41) as well as body mass index ( r = −0.45) (all P < 0.05). In conclusion, the dimension of the endothelial glycocalyx can be measured reproducibly in humans and is related to cardiovascular risk factors. It remains to be tested whether glycocalyx dimension can be used as an early marker of vascular damage and whether therapies aimed at glycocalyx repair can protect the vasculature against pathogenic challenges.
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Cohen-Mazor M, Sela S, Mazor R, Ilan N, Vlodavsky I, Rops AL, van der Vlag J, Cohen HI, Kristal B. Are primed polymorphonuclear leukocytes contributors to the high heparanase levels in hemodialysis patients? Am J Physiol Heart Circ Physiol 2008; 294:H651-8. [DOI: 10.1152/ajpheart.00952.2007] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Patients on chronic hemodialysis (HD) are at high risk for developing atherosclerosis and cardiovascular complications. Heparanase, an endoglycosidase that cleaves heparan sulfate (HS) side chains of proteoglycans, is involved in extracellular matrix degradation and, as such, may be involved in the atherosclerotic lesion progression. We hypothesize that heparanase is elevated in HD patients, partly due to its release from primed circulating polymorphonuclear leukocytes (PMNLs), undergoing degranulation. Priming of PMNLs was assessed by levels of CD11b and the rate of superoxide release. Heparanase mRNA expression in PMNLs was determined by RT-PCR. PMNL and plasma levels of heparanase were determined by immunoblotting, immunofluorescence, and flow cytometry analyses. The levels of soluble HS in plasma were measured by a competition ELISA. This study shows that PMNLs isolated from HD patients have higher mRNA and protein levels of heparanase compared with normal control (NC) subjects and that heparanase levels correlate positively with PMNL priming. Plasma levels of heparanase were higher in HD patients than in NC subjects and were further elevated after the dialysis session. In addition, heparanase expression inversely correlates with plasma HS levels. A pronounced expression of heparanase was found in human atherosclerotic lesions. The increased heparanase activity in the blood of HD patients results at least in part from the degranulation of primed PMNLs and may contribute to the acceleration of the atherosclerotic process. Our findings highlight primed PMNLs as a possible source for the increased heparanase in HD patients, posing heparanase as a new risk factor for cardiovascular complications and atherosclerosis.
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Extracellular Matrix-Mediated Control of Aortic Smooth Muscle Cell Growth and Migration by a Combination of Ascorbic Acid, Lysine, Proline, and Catechins. J Cardiovasc Pharmacol 2007; 50:541-7. [DOI: 10.1097/fjc.0b013e318145148e] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Abstract
Cell surface proteins containing covalently linked lipids associate with specialized membrane domains. Morphogens like Hedgehog and Wnt use their lipid anchors to bind to lipoprotein particles and employ lipoproteins to travel through tissues. Removal of their lipid anchors or decreasing lipoprotein levels give rise to adverse Hedgehog and Wnt signaling. Some parasites can also transfer their glycosylphosphatidylinositol-anchored surface proteins to host lipoprotein particles. These antigen-loaded lipoproteins spread throughout the circulation, and probably hamper an adequate immune response by killing neutrophils. Together, these findings imply a widespread role for lipoproteins in intercellular transfer of lipid-anchored surface proteins, and may have various physiological consequences. Here, we discuss how lipid-modified proteins may be transferred to and from lipoproteins at the cellular level.
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Affiliation(s)
- Sylvia Neumann
- Department of Membrane Enzymology, Bijvoet Center and Institute of Biomembranes, Utrecht University, Utrecht, The Netherlands
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Tran PK, Agardh HE, Tran-Lundmark K, Ekstrand J, Roy J, Henderson B, Gabrielsen A, Hansson GK, Swedenborg J, Paulsson-Berne G, Hedin U. Reduced perlecan expression and accumulation in human carotid atherosclerotic lesions. Atherosclerosis 2006; 190:264-70. [PMID: 16620836 DOI: 10.1016/j.atherosclerosis.2006.03.010] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/21/2005] [Revised: 03/06/2006] [Accepted: 03/09/2006] [Indexed: 12/15/2022]
Abstract
Heparan sulfate in the extracellular matrix of the artery wall has been proposed to possess anti-atherogenic properties by interfering with lipoprotein retention, suppression of inflammation, and inhibition of smooth muscle cell growth. Previously, the amount of heparan sulfate in atherosclerotic lesions from humans and animals has been shown to be reduced but the identity or identities of the heparan sulfate molecules being down regulated in this disease are not known. In this study, atherosclerotic lesions were retrieved from 44 patients undergoing surgery for symptomatic carotid stenosis. Normal iliac arteries from organ donors were used as controls. Analysis of the specimens by gene microarray showed a selective reduction in perlecan gene expression, whereas, expression of the other heparan sulfate proteoglycans in the artery wall, agrin and collagen XVIII, remained unchanged. Expression of the large chondroitin sulfate proteoglycan, versican, also remained unchanged. Real-time PCR confirmed the decrease in perlecan gene expression and the unchanged expression of versican. The findings were supported by immunohistochemical analysis demonstrating a reduced accumulation of both perlecan core protein and heparan sulfate in carotid lesions. The study demonstrates a reduction of perlecan mRNA-expression and protein deposition in human atherosclerosis, which in part explains the low levels of heparan sulfate in this disease.
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Affiliation(s)
- Phan-Kiet Tran
- Department of Molecular Medicine and Surgery, Karolinska Institutet, Karolinska University Hospital, SE-171 76 Stockholm, Sweden.
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Catena C, Novello M, Lapenna R, Baroselli S, Colussi G, Nadalini E, Favret G, Cavarape A, Soardo G, Sechi LA. New risk factors for atherosclerosis in hypertension: focus on the prothrombotic state and lipoprotein(a). J Hypertens 2005; 23:1617-31. [PMID: 16093903 DOI: 10.1097/01.hjh.0000178835.33976.e7] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Although adequate control of blood pressure is of basic importance in cardiovascular prevention in hypertensive patients, correction of additional risk factors is an integral part of their management. In addition to classical risk factors, epidemiological research has identified a number of other conditions that might significantly contribute to cardiovascular risk in the general population and might achieve specific relevance in patients with high blood pressure. In fact, more than 20% of patients with premature cardiovascular events do not have any of the traditional risk factors and, although effective intervention on blood pressure and additional risk factors has significantly reduced cardiovascular morbidity and mortality, the contribution to stroke, coronary artery disease and renal failure is still unacceptably high. Evaluation of new risk factors may further expand our capacity to predict atherothrombotic events when these factors are included along with the traditional ones in the assessment of global cardiovascular risk in hypertensive patients. Because it could be anticipated that the role of these novel factors will become increasingly evident in the future, researchers with an interest in hypertension and physicians dealing with problems related to cardiovascular prevention should give them appropriate consideration. This review summarizes the basic biology and clinical evidence of two emerging risk factors that are reciprocally related and contribute to the development and progression of organ damage in hypertension: the prothrombotic state and lipoprotein(a).
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Affiliation(s)
- Cristiana Catena
- Internal Medicine and Hypertension Unit, Department of Experimental and Clinical Pathology and Medicine, University of Udine, Piazzale S. Maria della Misericordia, 33100 Udine, Italy
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Duan W, Paka L, Pillarisetti S. Distinct effects of glucose and glucosamine on vascular endothelial and smooth muscle cells: evidence for a protective role for glucosamine in atherosclerosis. Cardiovasc Diabetol 2005; 4:16. [PMID: 16207378 PMCID: PMC1277831 DOI: 10.1186/1475-2840-4-16] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/18/2005] [Accepted: 10/05/2005] [Indexed: 11/12/2022] Open
Abstract
Accelerated atherosclerosis is one of the major vascular complications of diabetes. Factors including hyperglycemia and hyperinsulinemia may contribute to accelerated vascular disease. Among the several mechanisms proposed to explain the link between hyperglycemia and vascular dysfunction is the hexosamine pathway, where glucose is converted to glucosamine. Although some animal experiments suggest that glucosamine may mediate insulin resistance, it is not clear whether glucosamine is the mediator of vascular complications associated with hyperglycemia. Several processes may contribute to diabetic atherosclerosis including decreased vascular heparin sulfate proteoglycans (HSPG), increased endothelial permeability and increased smooth muscle cell (SMC) proliferation. In this study, we determined the effects of glucose and glucosamine on endothelial cells and SMCs in vitro and on atherosclerosis in apoE null mice. Incubation of endothelial cells with glucosamine, but not glucose, significantly increased matrix HSPG (perlecan) containing heparin-like sequences. Increased HSPG in endothelial cells was associated with decreased protein transport across endothelial cell monolayers and decreased monocyte binding to subendothelial matrix. Glucose increased SMC proliferation, whereas glucosamine significantly inhibited SMC growth. The antiproliferative effect of glucosamine was mediated via induction of perlecan HSPG. We tested if glucosamine affects atherosclerosis development in apoE-null mice. Glucosamine significantly reduced the atherosclerotic lesion in aortic root. (P < 0.05) These data suggest that macrovascular disease associated with hyperglycemia is unlikely due to glucosamine. In fact, glucosamine by increasing HSPG showed atheroprotective effects.
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Affiliation(s)
- Wenlan Duan
- Reddy US therapeutics, 3065 Northwoods Circle, Norcross, GA 30071, USA
- Department of Radiation Oncology, North Shore-Long Island Jewish Health System, 350 Community Dr, Manhasset, NY 11030, USA
| | - Latha Paka
- Angion Biomedica, 350 Community Dr, Manhasset, NY 11030
- Department of Radiation Oncology, North Shore-Long Island Jewish Health System, 350 Community Dr, Manhasset, NY 11030, USA
| | - Sivaram Pillarisetti
- Reddy US therapeutics, 3065 Northwoods Circle, Norcross, GA 30071, USA
- Department of Radiation Oncology, North Shore-Long Island Jewish Health System, 350 Community Dr, Manhasset, NY 11030, USA
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Nieuwdorp M, Meuwese MC, Vink H, Hoekstra JBL, Kastelein JJP, Stroes ESG. The endothelial glycocalyx: a potential barrier between health and vascular disease. Curr Opin Lipidol 2005; 16:507-11. [PMID: 16148534 DOI: 10.1097/01.mol.0000181325.08926.9c] [Citation(s) in RCA: 216] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
PURPOSE OF REVIEW Although cardiovascular prevention has improved substantially, we still face the challenge of finding new targets to reduce the sequelae of atherosclerosis further. In this regard, optimizing the vasculoprotective effects of the vessel wall itself warrants intensive research. In particular, the endothelial glycocalyx, consisting of proteoglycans, glycoproteins and adsorbed plasma proteins, may play an essential role in protecting the vessel wall from atherosclerosis. RECENT DEVELOPMENTS In this review, we will discuss the different vasculoprotective effects exerted by the endothelial glycocalyx, the factors that damage it, and the first preliminary data on the glycocalyx dimension in humans. Whereas most glycocalyx research has traditionally focused on the microvasculature, more recent data have underscored the importance of the glycocalyx in protecting the macrovasculature against pro-atherogenic insults. It has been shown that glycocalyx loss is accompanied by a wide array of unfavourable changes in both small and larger vessels. Pro-atherogenic stimuli increase the shedding of glycocalyx constituents into the circulation, contributing to the progressive loss of the vasculoprotective properties of the vessel wall. Novel techniques have facilitated reproducible measurements of systemic glycocalyx volume in humans. Consistent with experimental data, the volume of the human glycocalyx is also severely perturbed by exposure to atherogenic risk factors. SUMMARY Cumulating evidence suggests that an intact glycocalyx protects the vessel wall, whereas disruption of the glycocalyx upon atherogenic stimuli increases vascular vulnerability for atherogenesis.
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Affiliation(s)
- Max Nieuwdorp
- Department of Vascular Medicine, AMC-UvA, Amsterdam, Netherlands
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Zeng X, Chen J, Miller YI, Javaherian K, Moulton KS. Endostatin binds biglycan and LDL and interferes with LDL retention to the subendothelial matrix during atherosclerosis. J Lipid Res 2005; 46:1849-59. [PMID: 15995169 DOI: 10.1194/jlr.m500241-jlr200] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
Retention of lipoproteins to proteoglycans in the subendothelial matrix (SEM) is an early event in atherosclerosis. We recently reported that collagen XVIII and its proteolytically released fragment endostatin (ES) are differentially depleted in blood vessels affected by atherosclerosis. Loss of collagen XVIII/ES in atherosclerosis-prone mice enhanced plaque neovascularization and increased the vascular permeability to lipids by distinct mechanisms. Impaired endothelial barrier function increased the influx of lipoproteins across the endothelium; however, we hypothesized that enhanced retention might be a second mechanism leading to the increased lipid content in atheromas lacking collagen XVIII. We now demonstrate a novel property of ES that binds both the matrix proteoglycan biglycan and LDL and interferes with LDL retention to biglycan and to SEM. A peptide encompassing the alpha coil in the ES crystal structure mediates the major blocking effect of ES on LDL retention. ES inhibits the macrophage uptake of biglycan-associated LDL indirectly by interfering with LDL retention to biglycan, but it has no direct effect on the macrophage uptake of native or modified lipoproteins. Thus, loss of ES in advanced atheromas enhances lipoprotein retention in SEM. Our data reveal a third protective role of this vascular basement membrane component during atherosclerosis.
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Affiliation(s)
- Xiaokun Zeng
- Vascular Biology Program, Department of Surgery, Children's Hospital, Boston, MA 02115, USA
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Katsouras CS, Tsironis LD, Elisaf M, Goodevenos JA, Michalis LK, Tselepis AD. Lipoprotein(a) as a cardiovascular risk factor. Future Cardiol 2005; 1:509-17. [DOI: 10.2217/14796678.1.4.509] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Evidence for the role of lipoprotein(a) (Lp[a]) in atherosclerosis and thrombosis has considerably increased over the past few years. Therefore, Lp(a) is currently classified as an emerging lipid risk factor for cardiovascular disease. High Lp(a) plasma levels carried in particles with small-sized apolipoprotein(a) isoforms are associated with preclinical vascular changes, cardiovascular disease and the mode of presentation of coronary artery disease (acute coronary syndromes). However, randomized clinical trials with an emphasis on agents that specifically lower plasma Lp(a) do not exist. At present, screening for increases in Lp(a) in the general population is not recommended. The measurement of Lp(a) may be of value in individuals with an increased risk of cardiovascular disease, particularly in patients with high low-density lipoprotein cholesterol plasma levels, since a high Lp(a) concentration in such subjects further increases the risk of coronary heart disease.
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Affiliation(s)
| | - Loukas D Tsironis
- University of Ioannina, Laboratory of Biochemistry, Department of Chemistry, 45100 Ioannina, Greece
| | - Moses Elisaf
- University of Ioannina, Department of Internal Medicine, 45110 Ioannina, Greece
| | - John A Goodevenos
- University of Ioannina, Department of Cardiology, 45110 Ioannina, Greece
| | - Lampros K Michalis
- University of Ioannina, Department of Cardiology, 45110 Ioannina, Greece
| | - Alexandros D Tselepis
- University of Ioannina, Laboratory of Biochemistry, Department of Chemistry, 45110 Ioannina, Greece
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Esteve E, Ricart W, Fernández-Real JM. Dyslipidemia and inflammation: an evolutionary conserved mechanism. Clin Nutr 2005; 24:16-31. [PMID: 15681098 DOI: 10.1016/j.clnu.2004.08.004] [Citation(s) in RCA: 305] [Impact Index Per Article: 16.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2004] [Accepted: 08/16/2004] [Indexed: 12/17/2022]
Abstract
Inflammation leads to changes in lipid metabolism aimed at decreasing the toxicity of a variety of harmful agents and tissue repair by redistributing nutrients to cells involved in host defence. Acute phase response, mediated by cytokines, preserves the host from acute injury. When this inflammation becomes chronic, it might lead to chronic disorders as atherosclerosis and the metabolic syndrome. The activation of the inflammatory cascade will induce a decrease in HDL-cholesterol (HDL-C), with impairment in reverse cholesterol transport, and parallel changes in apolipoproteins, enzymes, anti-oxidant capacity and ATP binding cassette A1-dependent efflux. This decrease in HDL-C and phospholipids could stimulate compensatory changes, as synthesis and accumulation of phospholipid-rich VLDL which binds bacterial products and other toxic substances, resulting in hypertriglyceridemia. The final consequence is an increased accumulation of cholesterol in cells. When the compensatory response (inflammation) is not able to repair injury, it turns into a harmful reaction, and the lipid changes will become chronic, either by repeated or overwhelming stimulus, enhancing the formation of atherosclerotic lesions. Thus, the classical lipid changes associated with the metabolic syndrome (increased triglycerides and decreased HDL-C) may be envisioned as a highly conserved evolutionary response aimed at tissue repair. Under this assumption, the problem is not the response but the persistence of the stimulus.
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Affiliation(s)
- Eduardo Esteve
- Sección de Diabetes, Endocrinología y Nutrición, Hospital Universitario de Girona "Dr Josep Trueta", Avenida de Francia s/n, 17007 Girona, Spain
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D'Angelo A, Geroldi D, Hancock MA, Valtulina V, Cornaglia AI, Spencer CA, Emanuele E, Calligaro A, Koschinsky ML, Speziale P, Visai L. The apolipoprotein(a) component of lipoprotein(a) mediates binding to laminin: contribution to selective retention of lipoprotein(a) in atherosclerotic lesions. Biochim Biophys Acta Mol Cell Biol Lipids 2005; 1687:1-10. [PMID: 15708348 DOI: 10.1016/j.bbalip.2004.10.005] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2004] [Revised: 10/08/2004] [Accepted: 10/14/2004] [Indexed: 11/16/2022]
Abstract
Lipoprotein(a) [Lp(a)] entrapment by vascular extracellular matrix may be important in atherogenesis. We sought to determine whether laminin, a major component of the basal membrane, may contribute to Lp(a) retention in the arterial wall. First, immunohistochemistry experiments were performed to examine the relative distribution of Lp(a) and laminin in human carotid artery specimens. There was a high degree of co-localization of Lp(a) and laminin in atherosclerotic specimens, but not in non-atherosclerotic sections. We then studied the binding interaction between Lp(a) and laminin in vitro. ELISA experiments showed that native Lp(a) particles and 17K and 12K recombinant apolipoprotein(a) [r-apo(a)] variants interacted strongly with laminin whereas LDL, apoB-100, and the truncated KIV(6-P), KIV(8-P), and KIV(9-P) r-apo(a) variants did not. Overall, the ELISA data demonstrated that Lp(a) binding to laminin is mediated by apo(a) and a combination of the lysine analogue epsilon-aminocaproic acid and salt effectively decreases apo(a) binding to laminin. Secondary binding analyses with 125I-labeled r-apo(a) revealed equilibrium dissociation constants (K(d)) of 180 and 360 nM for the 17K and 12K variants binding to laminin, respectively. Such similar K(d) values between these two r-apo(a) variants suggest that isoform size does not appear to influence apo(a) binding to laminin. In summary, our data suggest that laminin may bind to apo(a) in the atherosclerotic intima, thus contributing to the selective retention of Lp(a) in this milieu.
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Affiliation(s)
- Angela D'Angelo
- Molecular Medicine Laboratory, University of Pavia, IRCCS Policlinico San Matteo, Piazzale Golgi 2, Pavia, Italy
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Williams KJ, Fisher EA. Oxidation, lipoproteins, and atherosclerosis: which is wrong, the antioxidants or the theory? Curr Opin Clin Nutr Metab Care 2005; 8:139-46. [PMID: 15716791 DOI: 10.1097/00075197-200503000-00006] [Citation(s) in RCA: 60] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
PURPOSE OF REVIEW Paradoxically, many well-established components of the heart-healthy lifestyle are pro-oxidant, including polyunsaturated fat and moderate alcohol consumption. Moreover, antioxidant supplements have failed to decrease cardiovascular risk in extensive human clinical trials to date. Recent progress in understanding the roles of oxidants in regulating VLDL secretion and as essential signaling molecules supports the concept that oxidation may be beneficial in certain circumstances but damaging in others. We summarize recent data on the roles played by oxidative metabolism in different tissues and pathways, and address whether it is currently advisable to use antioxidant supplements to reduce cardiovascular risk. RECENT FINDINGS Our recent study reported that in liver cells, polyunsaturated fatty acids increased reactive oxygen species, which in turn lowered the secretion of the atherogenic lipoprotein, VLDL, in vitro and in vivo. Antioxidant treatments prevented VLDL-lowering effects of polyunsaturated fatty acids in vitro, suggesting that supplemental antioxidants could either raise apolipoprotein-B-lipoprotein plasma levels in vivo, or impair the response to lipid-lowering therapies. The failure of antioxidants to decrease cardiovascular disease risk in many trials is also discussed in the context of current models for atherosclerosis progression and regression. SUMMARY Oxidation includes distinct biochemical reactions, and it is overly simplistic to lump them into a unitary process that affects all cell types and metabolic pathways adversely. Guidelines for diet should adhere closely to what has been clinically proved, and by this standard there is no basis to recommend antioxidant use, beyond what is inherent to the 'heart healthy' diet in order to benefit cardiovascular health.
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Affiliation(s)
- Kevin Jon Williams
- Division of Endocrinology, Department of Medicine, Thomas Jefferson University, Philadelphia, Pennsylvania, USA
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