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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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2
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Hyperphagia in offsprings of in utero hyperglycemic mothers is associated with increased expression of heparan sulfate proteoglycans in hypothalamus. Mol Cell Biochem 2022; 477:2025-2032. [PMID: 35419768 DOI: 10.1007/s11010-022-04427-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Accepted: 03/28/2022] [Indexed: 10/18/2022]
Abstract
In utero hyperglycemia has consequences on future outcomes in the offsprings. We had earlier shown that in utero hyperglycemia impacts proteoglycans/glycosaminoglycans, one of the key molecules involved in brain development. Hypothalamic HSPGs such as syndecan-1 and syndecan-3 are well known for their involvement in feeding behavior. Therefore, studies were carried out to determine the effect of maternal hyperglycemia on the expression of HSPGs in the hypothalamus of offspring brain. Results revealed increased protein abundance of Syndecan-1 and -3 as well as glypican-1 in postnatal adults from hyperglycemic mothers. This was associated with increased hyperphagia and increased expression of Neuropeptide Y. These results indicate the likely consequences on offsprings exposed to in utero hyperglycemia on its growth.
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Abstract
Diabetes is a complex disorder responsible for the mortality and morbidity of millions of individuals worldwide. Although many approaches have been used to understand and treat diabetes, the role of proteoglycans, in particular heparan sulfate proteoglycans (HSPGs), has only recently received attention. The HSPGs are heterogeneous, highly negatively charged, and are found in all cells primarily attached to the plasma membrane or present in the extracellular matrix (ECM). HSPGs are involved in development, cell migration, signal transduction, hemostasis, inflammation, and antiviral activity, and regulate cytokines, chemokines, growth factors, and enzymes. Hyperglycemia, accompanying diabetes, increases reactive oxygen species and upregulates the enzyme heparanase that degrades HSPGs or affects the synthesis of the HSPGs altering their structure. The modified HSPGs in the endothelium and ECM in the blood vessel wall contribute to the nephropathy, cardiovascular disease, and retinopathy seen in diabetes. Besides the blood vessel, other cells and tissues in the heart, kidney, and eye are affected by diabetes. Although not well understood, the adipose tissue, intestine, and brain also reveal HSPG changes associated with diabetes. Further, HSPGs are significantly involved in protecting the β cells of the pancreas from autoimmune destruction and could be a focus of prevention of type I diabetes. In some circumstances, HSPGs may contribute to the pathology of the disease. Understanding the role of HSPGs and how they are modified by diabetes may lead to new treatments as well as preventative measures to reduce the morbidity and mortality associated with this complex condition.
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Affiliation(s)
- Linda M Hiebert
- Department of Veterinary Biomedical Sciences, Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, Canada
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4
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Chen J, Chen V, Kawamura T, Hoang I, Yang Y, Wong AT, McBride R, Repunte-Canonigo V, Millhauser GL, Sanna PP. Charge Characteristics of Agouti-Related Protein Implicate Potent Involvement of Heparan Sulfate Proteoglycans in Metabolic Function. iScience 2019; 22:557-570. [PMID: 31863782 PMCID: PMC6928319 DOI: 10.1016/j.isci.2019.10.061] [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: 07/23/2019] [Revised: 09/21/2019] [Accepted: 10/25/2019] [Indexed: 12/05/2022] Open
Abstract
The endogenous melanocortin peptide agouti-related protein (AgRP) plays a well-known role in foraging, but its contribution to metabolic regulation is less understood. Mature AgRP(83-132) has distinct residues for melanocortin receptor binding and heparan sulfate interactions. Here, we show that AgRP increases ad libitum feeding and operant responding for food in mice, decreases oxygen consumption, and lowers body temperature and activity, indicating lower energy expenditure. AgRP increased the respiratory exchange ratio, indicating a reduction of fat oxidation and a shift toward carbohydrates as the primary fuel source. The duration and intensity of AgRP's effects depended on the density of its positively charged amino acids, suggesting that its orexigenic and metabolic effects depend on its affinity for heparan sulfate. These findings may have major clinical implications by unveiling the critical involvement of interactions between AgRP and heparan sulfate to the central regulation of energy expenditure, fat utilization, and possibly their contribution to metabolic disease. AgRP increases both ad libitum and operant food intake and reduces energy expenditure AgRP reduces fat utilization as a fuel source, which promotes body fat accumulation These actions of AgRP depend on the positive charges, outside its ICK motif, that bind heparan sulfate
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Affiliation(s)
- Jihuan Chen
- Department of Immunology, The Scripps Research Institute, La Jolla, CA 92037, USA
| | - Valerie Chen
- Department of Chemistry and Biochemistry, University of California, Santa Cruz, CA 95064, USA
| | - Tomoya Kawamura
- Department of Immunology, The Scripps Research Institute, La Jolla, CA 92037, USA
| | - Ivy Hoang
- Department of Immunology, The Scripps Research Institute, La Jolla, CA 92037, USA
| | - Yang Yang
- Department of Immunology, The Scripps Research Institute, La Jolla, CA 92037, USA
| | - Ashley Tess Wong
- Department of Chemistry and Biochemistry, University of California, Santa Cruz, CA 95064, USA
| | - Ryan McBride
- Department of Molecular Medicine, The Scripps Research Institute, La Jolla, CA 92037, USA; Genomics Core, The Scripps Research Institute, La Jolla, CA 92037, USA
| | - Vez Repunte-Canonigo
- Department of Immunology, The Scripps Research Institute, La Jolla, CA 92037, USA
| | - Glenn L Millhauser
- Department of Chemistry and Biochemistry, University of California, Santa Cruz, CA 95064, USA.
| | - Pietro Paolo Sanna
- Department of Immunology, The Scripps Research Institute, La Jolla, CA 92037, USA.
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5
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Wang F, Pulinilkunnil T, Flibotte S, Nislow C, Vlodavsky I, Hussein B, Rodrigues B. Heparanase protects the heart against chemical or ischemia/reperfusion injury. J Mol Cell Cardiol 2019; 131:29-40. [PMID: 31004678 DOI: 10.1016/j.yjmcc.2019.04.008] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/11/2018] [Revised: 03/14/2019] [Accepted: 04/10/2019] [Indexed: 12/14/2022]
Abstract
Although cancer cells use heparanase for tumor metastasis, favourable effects of heparanase have been reported in the management of Alzheimer's disease and diabetes. Indeed, we previously established a protective function for heparanase in the acutely diabetic heart, where it conferred cardiomyocyte resistance to oxidative stress and apoptosis by provoking changes in gene expression. In this study, we tested if overexpression of heparanase can protect the heart against chemically induced or ischemia/reperfusion (I/R) injury. Transcriptomic analysis of Hep-tg hearts reveal that 240 genes related to the stress response, immune response, cell death, and development were altered in a pro-survival direction encompassing genes promoting the unfolded protein response (UPR) and autophagy, as well as those protecting against oxidative stress. The observed UPR activation was adaptive and not apoptotic, was mediated by activation of ATF6α, and when combined with mTOR inhibition, induced autophagy. Subjecting wild type (WT) mice to increasing concentrations of the ER stress inducer thapsigargin evoked a transition from adaptive to apoptotic UPR, an effect that was attenuated in Hep-tg mouse hearts. Consistent with these observations, when exposed to I/R, the infarct size and markers of apoptosis were significantly lower in the Hep-tg heart compared to WT. Finally, UPR and autophagy inhibitors reduced the protective effects of heparanase overexpression during I/R. Our data suggest that the mechanisms that underlie the role of heparanase in promoting cell survival could be uniquely beneficial to the heart by providing protection against cellular stresses, and could be useful for exploitation as a therapeutic target for the treatment of heart disease.
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Affiliation(s)
- Fulong Wang
- Faculty of Pharmaceutical Sciences, University of British Columbia, 2405 Wesbrook Mall, Vancouver, BC V6T 1Z3, Canada
| | - Thomas Pulinilkunnil
- Department of Biochemistry and Molecular Biology, Faculty of Medicine, Dalhousie University, 100 Tucker Park Road, Saint John, NB E2L 4L5, Canada
| | | | - Corey Nislow
- Faculty of Pharmaceutical Sciences, University of British Columbia, 2405 Wesbrook Mall, Vancouver, BC V6T 1Z3, Canada
| | - Israel Vlodavsky
- Cancer and Vascular Biology Research Center, Rappaport Faculty of Medicine, Technion, Haifa 31096, Israel
| | - Bahira Hussein
- Faculty of Pharmaceutical Sciences, University of British Columbia, 2405 Wesbrook Mall, Vancouver, BC V6T 1Z3, Canada
| | - Brian Rodrigues
- Faculty of Pharmaceutical Sciences, University of British Columbia, 2405 Wesbrook Mall, Vancouver, BC V6T 1Z3, Canada.
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Messore A, Madia VN, Pescatori L, Saccoliti F, Tudino V, De Leo A, Bortolami M, De Vita D, Scipione L, Pepi F, Costi R, Rivara S, Scalvini L, Mor M, Ferrara FF, Pavoni E, Roscilli G, Cassinelli G, Milazzo FM, Battistuzzi G, Di Santo R, Giannini G. Novel Symmetrical Benzazolyl Derivatives Endowed with Potent Anti-Heparanase Activity. J Med Chem 2018; 61:10834-10859. [PMID: 30412404 DOI: 10.1021/acs.jmedchem.8b01497] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Heparanase is the only mammalian endo-β-d-glucuronidase involved in a variety of major diseases. The up-regulation of heparanase expression increases tumor size, angiogenesis, and metastasis, representing a validated target in the anti-cancer field. To date, only a few small-molecule inhibitors have been described, but none have gotten through pre-clinical development. Previously, we explored 2-(4-(4-(bromo-methoxybenzamido)benzylamino)phenyl) benzazole derivatives as anti-heparanase agents, proposing this scaffold for development of broadly effective heparanase inhibitors. Herein, we report an extended investigation of new symmetrical 2-aminophenyl-benzazolyl-5-acetate derivatives, proving that symmetrical compounds are more effective than asymmetrical analogues, with the most-potent compound, 7g, being active at nanomolar concentration against heparanase. Molecular docking studies were performed on the best-acting compounds 5c and 7g to rationalize their interaction with the enzyme. Moreover, invasion assay confirmed the anti-metastatic potential of compounds 5c, 7a, and 7g, proving the inhibition of the expression of proangiogenic factors in tumor cells.
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Affiliation(s)
- Antonella Messore
- Dipartimento di Chimica e Tecnologie del Farmaco, Istituto Pasteur-Fondazione Cenci Bolognetti , "Sapienza" Università di Roma , Piazzale Aldo Moro 5 , I-00185 Roma , Italy
| | - Valentina Noemi Madia
- Dipartimento di Chimica e Tecnologie del Farmaco, Istituto Pasteur-Fondazione Cenci Bolognetti , "Sapienza" Università di Roma , Piazzale Aldo Moro 5 , I-00185 Roma , Italy
| | - Luca Pescatori
- Dipartimento di Chimica e Tecnologie del Farmaco, Istituto Pasteur-Fondazione Cenci Bolognetti , "Sapienza" Università di Roma , Piazzale Aldo Moro 5 , I-00185 Roma , Italy
| | - Francesco Saccoliti
- Dipartimento di Chimica e Tecnologie del Farmaco, Istituto Pasteur-Fondazione Cenci Bolognetti , "Sapienza" Università di Roma , Piazzale Aldo Moro 5 , I-00185 Roma , Italy
| | - Valeria Tudino
- Dipartimento di Chimica e Tecnologie del Farmaco, Istituto Pasteur-Fondazione Cenci Bolognetti , "Sapienza" Università di Roma , Piazzale Aldo Moro 5 , I-00185 Roma , Italy
| | - Alessandro De Leo
- Dipartimento di Chimica e Tecnologie del Farmaco, Istituto Pasteur-Fondazione Cenci Bolognetti , "Sapienza" Università di Roma , Piazzale Aldo Moro 5 , I-00185 Roma , Italy
| | - Martina Bortolami
- Dipartimento di Chimica e Tecnologie del Farmaco, Istituto Pasteur-Fondazione Cenci Bolognetti , "Sapienza" Università di Roma , Piazzale Aldo Moro 5 , I-00185 Roma , Italy
| | - Daniela De Vita
- Dipartimento di Chimica e Tecnologie del Farmaco, Istituto Pasteur-Fondazione Cenci Bolognetti , "Sapienza" Università di Roma , Piazzale Aldo Moro 5 , I-00185 Roma , Italy
| | - Luigi Scipione
- Dipartimento di Chimica e Tecnologie del Farmaco, Istituto Pasteur-Fondazione Cenci Bolognetti , "Sapienza" Università di Roma , Piazzale Aldo Moro 5 , I-00185 Roma , Italy
| | - Federico Pepi
- Dipartimento di Chimica e Tecnologie del Farmaco, Istituto Pasteur-Fondazione Cenci Bolognetti , "Sapienza" Università di Roma , Piazzale Aldo Moro 5 , I-00185 Roma , Italy
| | - Roberta Costi
- Dipartimento di Chimica e Tecnologie del Farmaco, Istituto Pasteur-Fondazione Cenci Bolognetti , "Sapienza" Università di Roma , Piazzale Aldo Moro 5 , I-00185 Roma , Italy
| | - Silvia Rivara
- Dipartimento di Scienze degli Alimenti e del Farmaco , Università degli Studi di Parma , Parco Area delle Scienze 27/A , I- 43124 Parma , Italy
| | - Laura Scalvini
- Dipartimento di Scienze degli Alimenti e del Farmaco , Università degli Studi di Parma , Parco Area delle Scienze 27/A , I- 43124 Parma , Italy
| | - Marco Mor
- Dipartimento di Scienze degli Alimenti e del Farmaco , Università degli Studi di Parma , Parco Area delle Scienze 27/A , I- 43124 Parma , Italy
| | | | | | | | - Giuliana Cassinelli
- Dipartimento di Ricerca Applicata e Sviluppo Tecnologico, Unità di Farmacologia Molecolare , Fondazione IRCCS Istituto Nazionale dei Tumori , via Amadeo 42 , I-20133 Milano , Italy
| | | | | | - Roberto Di Santo
- Dipartimento di Chimica e Tecnologie del Farmaco, Istituto Pasteur-Fondazione Cenci Bolognetti , "Sapienza" Università di Roma , Piazzale Aldo Moro 5 , I-00185 Roma , Italy
| | - Giuseppe Giannini
- R&D Alfasigma S.p.A. , Via Pontina Km 30,400 , Pomezia, I-00071 Roma , Italy
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7
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Muhammad RS, Abu-Saleh N, Kinaneh S, Agbaria M, Sabo E, Grajeda-Iglesias C, Volkova N, Hamoud S. Heparanase inhibition attenuates atherosclerosis progression and liver steatosis in E 0 mice. Atherosclerosis 2018; 276:155-162. [PMID: 30075439 DOI: 10.1016/j.atherosclerosis.2018.07.026] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/01/2018] [Revised: 07/01/2018] [Accepted: 07/18/2018] [Indexed: 01/01/2023]
Abstract
BACKGROUND AND AIMS Increased oxidative stress is associated with accelerated atherosclerosis. Emerging evidence highlights the role of heparanase in atherogenesis, where heparanase inhibitor PG545 reduces oxidative stress in apolipoprotein E deficient mice (E0 mice). Herein, we studied the effects of PG545 on atherosclerosis progression in E0 mice. METHODS Male E0 mice fed a high-fat diet (n = 20) were divided into 3 groups treated with weekly intraperitoneal injections of either low (0.2 mg/mouse) or high dose (0.4 mg/mouse)PG545 or normal saline (controls) for twelve weeks. Body weight and food intake were measured weekly. At the end of the treatment period, blood pressure was measured, animals were sacrificed and serum samples were collected and assessed for biochemical parameters and oxidative stress. Aortic vessels and livers were collected for atherosclerotic plaques and histopathological analysis, respectively. RESULTS Blood pressure decreased in mice treated with low, but not high dose of PG545. In addition, heparanase inhibition caused a dose-dependent reduction in serum oxidative stress, total cholesterol, low-density lipoproteins, triglycerides, high-density lipoproteins, and aryl esterase activity. Although food intake was not reduced by PG545, body weight gain was significantly attenuated in PG545 treated groups. Both doses of PG545 caused a marked reduction in aortic wall thickness and atherosclerosis development, and liver steatosis. Liver enzymes and serum creatinine were not affected by PG545. CONCLUSIONS Heparanase inhibition by PG545 caused a significant reduction in lipid profile and serum oxidative stress along with attenuation of atherosclerosis, aortic wall thickness, and liver steatosis. Moreover, PG545 attenuated weight gain without reducing food intake. Collectively, these findings suggest that heparanase blockade is highly effective in slowing atherosclerosis formation and progression, and decreasing liver steatosis.
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Affiliation(s)
- Rabia Shekh Muhammad
- Department of Internal Medicine E, Rambam Health Care Campus and Rappaport Faculty of Medicine Haifa, Israel
| | - Niroz Abu-Saleh
- Lipid Research Laboratory, Rappaport Faculty of Medicine, Technion, Haifa, Israel
| | - Safa Kinaneh
- Department of Physiology, Rappaport Faculty of Medicine, Technion, Haifa, Israel
| | - Mohammad Agbaria
- Department of Internal Medicine A, Rambam Health Care Campus, Haifa, Israel
| | - Edmond Sabo
- Department of Pathology, Rambam Health Care Campus and Rappaport Faculty of Medicine, Technion, Haifa, Israel
| | | | - Nina Volkova
- Lipid Research Laboratory, Rappaport Faculty of Medicine, Technion, Haifa, Israel
| | - Shadi Hamoud
- Department of Internal Medicine E, Rambam Health Care Campus and Rappaport Faculty of Medicine Haifa, Israel; Lipid Research Laboratory, Rappaport Faculty of Medicine, Technion, Haifa, Israel.
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8
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Heparin Increases Food Intake through AgRP Neurons. Cell Rep 2018; 20:2455-2467. [PMID: 28877477 PMCID: PMC6310124 DOI: 10.1016/j.celrep.2017.08.049] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2017] [Revised: 06/21/2017] [Accepted: 08/14/2017] [Indexed: 11/20/2022] Open
Abstract
Although the widely used anticoagulant drug heparin has been shown to have many other biological functions independent of its anticoagulant role, its effects on energy homeostasis are unknown. Here, we demonstrate that heparin level is negatively associated with nutritional states and that heparin treatment increases food intake and body weight gain. By using electrophysiological, pharmacological, molecular biological, and chemogenetic approaches, we provide evidence that heparin increases food intake by stimulating AgRP neurons and increasing AgRP release. Our results support a model whereby heparin competes with insulin for insulin receptor binding on AgRP neurons, and by doing so it inhibits FoxO1 activity to promote AgRP release and feeding. Heparin may be a potential drug target for food intake regulation and body weight control. Zhu et al. demonstrate that heparin competes with insulin for insulin receptor binding on AgRP neurons, and by doing so it inhibits FoxO1 activity to promote AgRP release and feeding. Heparin is identified as a potential drug target for food intake regulation and body weight control.
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9
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Chang BCC, Hwang LC, Huang WH. Positive Association of Metabolic Syndrome with a Single Nucleotide Polymorphism of Syndecan-3 (rs2282440) in the Taiwanese Population. Int J Endocrinol 2018; 2018:9282598. [PMID: 29666642 PMCID: PMC5830967 DOI: 10.1155/2018/9282598] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/11/2017] [Accepted: 12/19/2017] [Indexed: 01/27/2023] Open
Abstract
BACKGROUND/PURPOSE Metabolic syndrome (MetS) poses a major public health burden on the general population worldwide. Syndecan-3 (SDC3), a heparin sulfate proteoglycan, had been found by previous studies to be linked with energy balance and obesity, but its association with MetS is not known. The objective of this study is to investigate whether SDC3 polymorphism (rs2282440) is associated with MetS in the Taiwanese population. METHODS Genotypes of SDC3 polymorphism (rs2282440) were analyzed in 545 Taiwanese adult subjects, of which 154 subjects had MetS. RESULTS Subjects with SDC3 rs2282440 TT homozygote had higher frequency of MetS than those with CC or CT genotype (p = 0.0217). SDC3 rs2282440 TT homozygote had a 1.96-fold risk of being obese and 1.8-fold risk of having MetS (with CC genotype as reference). As for the individual components of MetS, subjects with SDC3 rs2282440 TT homozygote were more likely to have large waist circumference and low high-density lipoprotein cholesterol (OR = 1.75 and OR = 1.84, resp.). CONCLUSION SDC3 rs2282440 polymorphism is positively associated with MetS in the Taiwanese population. Further investigation is needed to see if this association is mediated by mere adiposity or SDC3 polymorphism is also linked with other components of MetS such as lipid metabolism.
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Affiliation(s)
| | - Lee-Ching Hwang
- Department of Family Medicine, Mackay Memorial Hospital, Taipei City, Taiwan
- Mackay Medical College, New Taipei City, Taiwan
| | - Wei-Hsin Huang
- Department of Family Medicine, Mackay Memorial Hospital, Taipei City, Taiwan
- Mackay Medical College, New Taipei City, Taiwan
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10
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Heparanase Inhibition Reduces Glucose Levels, Blood Pressure, and Oxidative Stress in Apolipoprotein E Knockout Mice. BIOMED RESEARCH INTERNATIONAL 2017; 2017:7357495. [PMID: 29226146 PMCID: PMC5684525 DOI: 10.1155/2017/7357495] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/30/2017] [Revised: 08/07/2017] [Accepted: 09/17/2017] [Indexed: 02/07/2023]
Abstract
Background Atherosclerosis is a multifactorial process. Emerging evidence highlights a role of the enzyme heparanase in various disease states, including atherosclerosis formation and progression. Objective The aim of the study was to investigate the effect of heparanase inhibition on blood pressure, blood glucose levels, and oxidative stress in apoE−/− mice. Methods Male apoE−/− mice were divided into two groups: one treated by the heparanase inhibitor PG545, administered intraperitoneally weekly for seven weeks, and the other serving as control group (injected with saline). Blood pressure was measured a day before sacrificing the animals. Serum glucose levels and lipid profile were measured. Assessment of oxidative stress was performed as well. Results PG545 significantly lowered blood pressure and serum glucose levels in treated mice. It also caused significant reduction of the serum oxidative stress. For safety concerns, liver enzymes were assessed, and PG545 caused significant elevation only of alanine aminotransferase, but not of the other hepatic enzymes. Conclusion Heparanase inhibition by PG545 caused marked reduction of blood pressure, serum glucose levels, and oxidative stress in apolipoprotein E deficient mice, possibly via direct favorable metabolic and hemodynamic changes caused by the inhibitor. Possible hepatotoxic and weight wasting effects are subject for future investigation.
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11
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Heparan sulfate: Resilience factor and therapeutic target for cocaine abuse. Sci Rep 2017; 7:13931. [PMID: 29066725 PMCID: PMC5654972 DOI: 10.1038/s41598-017-13960-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2017] [Accepted: 10/03/2017] [Indexed: 12/15/2022] Open
Abstract
Substance abuse is a pressing problem with few therapeutic options. The identification of addiction resilience factors is a potential strategy to identify new mechanisms that can be targeted therapeutically. Heparan sulfate (HS) is a linear sulfated polysaccharide that is a component of the cell surface and extracellular matrix. Heparan sulfate modulates the activity and distribution of a set of negatively charged signaling peptides and proteins — known as the HS interactome — by acting as a co-receptor or alternative receptor for growth factors and other signaling peptides and sequestering and localizing them, among other actions. Here, we show that stimulants like cocaine and methamphetamine greatly increase HS content and sulfation levels in the lateral hypothalamus and that HS contributes to the regulation of cocaine seeking and taking. The ability of the HS-binding neuropeptide glial-cell-line-derived neurotrophic factor (GDNF) to increase cocaine intake was potentiated by a deletion that abolished its HS binding. The delivery of heparanase, the endo-β-D-glucuronidase that degrades HS, accelerated the acquisition of cocaine self-administration and promoted persistent responding during extinction. Altogether, these results indicate that HS is a resilience factor for cocaine abuse and a novel therapeutic target for the treatment of cocaine addiction.
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12
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Sandeep MS, Nandini CD. Brain heparan sulphate proteoglycans are altered in developing foetus when exposed to in-utero hyperglycaemia. Metab Brain Dis 2017; 32:1185-1194. [PMID: 28462474 DOI: 10.1007/s11011-017-0019-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/23/2016] [Accepted: 04/21/2017] [Indexed: 01/14/2023]
Abstract
In-utero exposure of foetus to hyperglycaemic condition affects the growth and development of the organism. The brain is one of the first organs that start to develop during embryonic period and glycosaminoglycans (GAGs) and proteoglycans (PGs) are one of the key molecules involved in its development. But studies on the effect of hyperglycaemic conditions on brain GAGs/PGs are few and far between. We, therefore, looked into the changes in brain GAGs and PGs at various developmental stages of pre- and post-natal rats from non-diabetic and diabetic mothers as well as in adult rats induced with diabetes using a diabetogenic agent, Streptozotocin. Increased expression of GAGs especially that of heparan sulphate class in various developmental stages were observed in the brain as a result of in-utero hyperglycaemic condition but not in that of adult rats. Changes in disaccharides of heparan sulphate (HS) were observed in various developmental stages. Furthermore, various HSPGs namely, syndecans-1 and -3 and glypican-1 were overexpressed in offspring from diabetic mother. However, in adult diabetic rats, only glypican-1 was overexpressed. The offsprings from diabetic mothers became hyperphagic at the end of 8 weeks after birth which can have implications in the long run. Our results highlight the likely impact of the in-utero exposure of foetus to hyperglycaemic condition on brain GAGs/PGs compared to diabetic adult rats.
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Affiliation(s)
- M S Sandeep
- Department of Molecular Nutrition, CSIR-Central Food Technological Research Institute, Mysuru, 570 020, India
| | - C D Nandini
- Department of Molecular Nutrition, CSIR-Central Food Technological Research Institute, Mysuru, 570 020, India.
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Palomino R, Lee HW, Millhauser GL. The agouti-related peptide binds heparan sulfate through segments critical for its orexigenic effects. J Biol Chem 2017; 292:7651-7661. [PMID: 28264929 DOI: 10.1074/jbc.m116.772822] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2016] [Revised: 03/03/2017] [Indexed: 12/20/2022] Open
Abstract
Syndecans potently modulate agouti-related peptide (AgRP) signaling in the central melanocortin system. Through heparan sulfate moieties, syndecans are thought to anchor AgRP near its receptor, enhancing its orexigenic effects. Original work proposed that the N-terminal domain of AgRP facilitates this interaction. However, this is not compatible with evidence that this domain is posttranslationally cleaved. Addressing this long-standing incongruity, we used calorimetry and magnetic resonance to probe interactions of AgRP peptides with glycosaminoglycans, including heparan sulfate. We show that mature, cleaved, C-terminal AgRP, not the N-terminal domain, binds heparan sulfate. NMR shows that the binding site consists of regions distinct from the melanocortin receptor-binding site. Using a library of designed AgRP variants, we find that the strength of the syndecan interaction perfectly tracks orexigenic action. Our data provide compelling evidence that AgRP is a heparan sulfate-binding protein and localizes critical regions in the AgRP structure required for this interaction.
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Affiliation(s)
- Rafael Palomino
- From the Department of Chemistry and Biochemistry, University of California, Santa Cruz, California 95064
| | - Hsiau-Wei Lee
- From the Department of Chemistry and Biochemistry, University of California, Santa Cruz, California 95064
| | - Glenn L Millhauser
- From the Department of Chemistry and Biochemistry, University of California, Santa Cruz, California 95064
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Kunnas T, Solakivi T, Määttä K, Nikkari ST. Glucuronic Acid Epimerase (GLCE) Variant rs3865014 (A>G) Is Associated with BMI, Blood Hemoglobin, Hypertension, and Cerebrovascular Events, the TAMRISK Study. Ann Hum Genet 2016; 80:332-335. [DOI: 10.1111/ahg.12166] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2016] [Accepted: 08/05/2016] [Indexed: 01/01/2023]
Affiliation(s)
- Tarja Kunnas
- Department of Medical Biochemistry; University of Tampere Medical School and Fimlab laboratories; Tampere Finland
| | - Tiina Solakivi
- Department of Medical Biochemistry; University of Tampere Medical School and Fimlab laboratories; Tampere Finland
| | - Kirsi Määttä
- Department of Medical Biochemistry; University of Tampere Medical School and Fimlab laboratories; Tampere Finland
| | - Seppo T. Nikkari
- Department of Medical Biochemistry; University of Tampere Medical School and Fimlab laboratories; Tampere Finland
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15
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Antilipidemic effects and gene expression profiling of the glycosaminoglycans from cricket in rats on a high fat diet. Arch Pharm Res 2016; 39:926-36. [PMID: 27138285 DOI: 10.1007/s12272-016-0749-1] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2015] [Accepted: 04/23/2016] [Indexed: 11/27/2022]
Abstract
Glycosaminoglycan (GAG) from cricket (Gryllus bimaculatus) was studied as a potential health supplement. Antiatherosclerotic and antilipidemic effects of the GAG of G. bimaculatus (GbG, 5 or 10 mg/kg) were investigated in 15-week old Wistar rats treated with GbG for over a month. GbG produced a meaningful anti-edema effect with inhibition of C-reactive protein (CRP). Also, the weights of abdominal and epididymidal fat were also reduced in conjunction with a mild increase in body weight. Furthermore, the sero-biochemical parameters showed an antihyperlipidemic effect with decreased levels of phospholipid, AST, ALT, total cholesterol and glucose in a dose-dependent manner. In addition anticoagulant and antithrombotic effects were seen: platelet, thrombin time, prothrombin time and Factor I were increased with GbG treatment. Furthermore, the GbG treated rat group (at 10 mg/kg) compared to control, showed that 588 genes (test/control ratio >2.0) including lipocalin 2 (Lcn2) and alpha 2-macroglobulin (A2 m) were up-regulated, and 569 genes (test/control ratio >0.5) including stearoyl-coenzyme A desaturase 1 (Scd1) were down-regulated. Based on these results, GbG could potentially prevent or treat fatty liver or hyperlipidemia in rats on a high-fat diet.
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Qing Q, Zhang S, Chen Y, Li R, Mao H, Chen Q. High glucose-induced intestinal epithelial barrier damage is aggravated by syndecan-1 destruction and heparanase overexpression. J Cell Mol Med 2015; 19:1366-74. [PMID: 25702768 PMCID: PMC4459850 DOI: 10.1111/jcmm.12523] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2014] [Accepted: 11/27/2014] [Indexed: 02/06/2023] Open
Abstract
Syndecan-1 (Sdc1) and its endo-beta-d-glucuronidase heparanase (HPSE) are implicated in maintenance of intestinal epithelial barrier (IEB), but their alterations and roles in high-glucose/hyperglycaemia (HG) conditions have not been fully investigated. This study aimed to determine the expression pattern, the possible regulation mechanism of Sdc1 and HPSE in HG conditions, and their potential effects on IEB. Therefore, diabetic mice/cell models were developed, and tissue/serum samples, cell lysate and culture supernatants were harvested. The expression of Sdc1 and HPSE in control, HG and designated interventions groups were detected. Phosphorylations of mitogen-activated protein kinase signalling pathway (MAPK), the expressions of Occludin and ZO-1, and the levels of transepithelial electrical resistance (TEER) were measured and monitored. The results showed that in HG conditions, intestinal tissue and cellular Sdc1 were significantly decreased, but the expression of HPSE, and soluble Sdc1 in serum and culture supernatants were remarkably increased. Such alterations of Sdc1 and HPSE were associated with solely p38 MAPK activation, and were correlated with the reductions of Occludin, ZO-1 and TEER. Heparin (Sdc1 analogue) and SB203580 (a p38 MAPK inhibitor), instead of insulin, alleviated Sdc1 destruction and HPSE overexpression, and effectively prevented against the reductions of tight junctions and the abnormality of intestinal permeability in HG conditions. In conclusion, we confirm the unique alterations of Sdc1 and HPSE in HG conditions, and found their interactions with p38 MAPK activation and IEB. These indicate that Sdc1/HPSE modulation can be viewed as an important complementary treatment for relieving HG-induced gastrointestinal damage.
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Affiliation(s)
- Qing Qing
- Department of Gastroenterology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China.,Department of Gastroenterology, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Shaoheng Zhang
- Department of Gastroenterology, Zhujiang Hospital, Southern Medical University, Guangzhou, China
| | - Ye Chen
- Department of Gastroenterology, Nanfang Hospital, Southern Medical University, Guangdong Provincial Key Laboratory of Gastroenterology, Guangzhou, China
| | - Runhua Li
- Department of Gastroenterology, Nanfang Hospital, Southern Medical University, Guangdong Provincial Key Laboratory of Gastroenterology, Guangzhou, China
| | - Hua Mao
- Department of Gastroenterology, Zhujiang Hospital, Southern Medical University, Guangzhou, China
| | - Qikui Chen
- Department of Gastroenterology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
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Leonova EI, Galzitskaya OV. Structure and functions of syndecans in vertebrates. BIOCHEMISTRY (MOSCOW) 2015; 78:1071-85. [PMID: 24237141 DOI: 10.1134/s0006297913100015] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Syndecans constitute a family of transmembrane proteoglycans that perform multiple functions during development, damage repair, tumor growth, angiogenesis, and neurogenesis. Through mediating binding of a great number of extracellular ligands to their receptors, these proteoglycans trigger a cascade of reactions regulating, thereby, various processes in a cell: cytoskeleton formation, proliferation, differentiation, adhesion, and migration. In fibroblasts, syndecans are responsible for cell adhesion by modulating functions of integrins through interaction with fibronectin at the external side of a cell and with cytoskeleton and signaling molecules inside the cell. The extracellular domain of syndecans is subjected to periodic shedding from the cell membrane. This process may be stimulated in response to inflammation, tissue damage, and other pathological manifestations. Cleaved domain may act as either competitive inhibitor or activator of signaling cascades. This review summarizes and analyzes the available data regarding structure, main biochemical properties, and functions of syndecans in vertebrates.
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Affiliation(s)
- E I Leonova
- Lomonosov Moscow State University, Pushchino Branch, Pushchino, Moscow Region, 142290, Russia
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18
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Leonova EI, Galzitskaya OV. Role of Syndecans in Lipid Metabolism and Human Diseases. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2015; 855:241-58. [PMID: 26149933 DOI: 10.1007/978-3-319-17344-3_10] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Syndecans are transmembrane heparan sulfate proteoglycans involved in the regulation of cell growth, differentiation, adhesion, neuronal development, and lipid metabolism. Syndecans are expressed in a tissue-specific manner to facilitate diverse cellular processes. As receptors and co-receptors, syndecans provide promising therapeutic targets that bind to a variety of physiologically important ligands. Negatively charged glycosaminoglycan chains of syndecans, located in the extracellular compartment, are critical for such binding. Functions of syndecans are as diverse as their ligands. For example, hepatic syndecan-1 mediates clearance of triglyceride-rich lipoproteins. Syndecan-2 promotes localization of Alzheimer's amyloid Aβ peptide to the cell surface, which is proposed to contribute to amyloid plaque formation. Syndecan-3 helps co-localize the appetite-regulating melanocortin-4 receptor with its agonist, leading to an increased appetite. Finally, syndecan-4 initiates the capture of modified low-density lipoproteins by macrophages and thereby promotes the atheroma formation. We hypothesize that syndecan modifications such as desulfation of glycosaminoglycan chains may contribute to a wide range of diseases, from atherosclerosis to type 2 diabetes. At the same time, desulfated syndecans may have beneficial effects, as they can inhibit amyloid plaque formation or decrease the appetite. Despite considerable progress in understanding diverse functions of syndecans, the complex physiological roles of this intriguing family of proteoglycans are far from clear. Additional studies of syndecans may potentially help develop novel therapeutic approaches and diagnostic tools to alleviate complex human diseases such as cardiovascular and Alzheimer's diseases.
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Affiliation(s)
- Elena I Leonova
- Institute of Protein Research, Russian Academy of Sciences, Pushchino, Moscow Region, 142290, Russia,
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Towards understanding the roles of heparan sulfate proteoglycans in Alzheimer's disease. BIOMED RESEARCH INTERNATIONAL 2014; 2014:516028. [PMID: 25157361 PMCID: PMC4135094 DOI: 10.1155/2014/516028] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/03/2014] [Accepted: 07/12/2014] [Indexed: 02/07/2023]
Abstract
Alzheimer's disease (AD) is the most common form of dementia, characterized by progressive loss of memory and cognitive dysfunctions. A central pathological event of AD is accumulation and deposition of cytotoxic amyloid-β peptide (Aβ) in the brain parenchyma. Heparan sulfate proteoglycans (HSPGs) and the side chains heparan sulfate (HS) are found associated with Aβ deposits in the brains of AD patients and transgenic animal models of AD. A growing body of evidence from in vitro and in vivo studies suggests functional roles of HSPG/HS in Aβ pathogenesis. Although the question of "how and why HSPG/HS is codeposited with Aβ?" still remains, it is within reach to understand the mechanisms of the events. Recent progress by immunohistochemical examination with advanced antibodies shed light on molecular structures of HS codeposited with Aβ. Several recent reports have provided important new insights into the roles of HSPG in Aβ pathogenesis. Particularly, experiments on mouse models revealed indispensible functions of HSPG in modulating Aβ-associated neuroinflammation and clearance of Aβ from the brain. Application of molecules to interfere with the interaction between HS and Aβ peptides has demonstrated beneficial effects on AD mouse models. Elucidating the functions of HSPG/HS in Aβ deposition and toxicity is leading to further understanding of the complex pathology of AD. The progress is encouraging development of new treatments for AD by targeting HS-Aβ interactions.
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20
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Leonova EI, Galzitskaya OV. Cell communication using intrinsically disordered proteins: what can syndecans say? J Biomol Struct Dyn 2014; 33:1037-50. [PMID: 24956062 DOI: 10.1080/07391102.2014.926256] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Because intrinsically disordered proteins are incapable of forming unique tertiary structures in isolation, their interaction with partner structures enables them to play important roles in many different biological functions. Therefore, such proteins are usually multifunctional, and their ability to perform their major function, as well as accessory functions, depends on the characteristics of a given interaction. The present paper demonstrates, using predictions from two programs, that the transmembrane proteoglycans syndecans are natively disordered because of their diverse functions and large number of interaction partners. Syndecans perform multiple functions during development, damage repair, tumor growth, angiogenesis, and neurogenesis. By mediating the binding of a large number of extracellular ligands to their receptors, these proteoglycans trigger a cascade of reactions that subsequently regulate various cell processes: cytoskeleton formation, proliferation, differentiation, adhesion, and migration. The occurrences of 20 amino acids in syndecans 1-4 from 25 animals were compared with those in 17 animal proteomes. Gly + Ala, Thr, Glu, and Pro were observed to predominate in the syndecans, contributing to the lack of an ordered structure. In contrast, there were many fewer amino acids in syndecans that promote an ordered structure, such as Cys, Trp, Asn, and His. In addition, a region rich in Asp has been identified between two heparan sulfate-binding sites in the ectodomains, and a region rich in Lys has been identified in the conserved C1 site of the cytoplasmic domain. These particular regions play an essential role in the various functions of syndecans due to their lack of structure.
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Affiliation(s)
- Elena I Leonova
- a Institute of Protein Research, Russian Academy of Sciences , Moscow Region, Pushchino 142290 , Russia
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21
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Qu H, Li J, Chen W, Li Y, Jiang Q, Jiang H, Huo J, Zhao Z, Liu B, Zhang Q. Differential expression of the melanocortin-4 receptor in male and female C57BL/6J mice. Mol Biol Rep 2014; 41:3245-56. [DOI: 10.1007/s11033-014-3187-5] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2013] [Accepted: 01/20/2014] [Indexed: 01/09/2023]
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Zhang X, Wang B, Li JP. Implications of heparan sulfate and heparanase in neuroinflammation. Matrix Biol 2014; 35:174-81. [PMID: 24398134 DOI: 10.1016/j.matbio.2013.12.009] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2013] [Revised: 12/23/2013] [Accepted: 12/23/2013] [Indexed: 12/24/2022]
Abstract
Heparan sulfate proteoglycans (HSPGs), expressed on the cell surface and in the extracellular matrix of most animal tissues, have essential functions in development and homeostasis, and have been implicated in several pathological conditions. The functions of HSPGs are mainly mediated through interactions of the heparan sulfate (HS) polysaccharide side chains with different protein ligands. The molecular structure of HS is highly diverse, expressed in a cell-type specific manner. The flexible yet controlled structure of HS is primarily generated through a strictly regulated biosynthesis process and is further modified post-synthetically, such as desulfation by endosulfatases and fragmentation by heparanase. Heparanase is an endo-glucuronidase expressed in all tissues. The enzyme has been found up-regulated in a number of pathological conditions, implying a role in diseases mainly through degradation of HS. Emerging evidence demonstrates important roles of HS and heparanase in inflammatory reactions, particularly in the regulation of leukocyte activation and extravasation. Neuroinflammation is a common feature of various central nervous system disorders, thus it is a great interest to understand the implications of HS and heparanase in neuroinflammation.
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Affiliation(s)
- Xiao Zhang
- Department of Neuroscience Pharmacology, Uppsala University, Biomedical Center, Uppsala, Sweden
| | - Bo Wang
- Department of Neuropharmacology, Beijing Institute of Pharmacology and Toxicology, Beijing, China
| | - Jin-Ping Li
- Department of Medical Biochemistry and Microbiology, Uppsala University, Biomedical Center, Uppsala, Sweden.
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23
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Adhikari N, Billaud M, Carlson M, Lake SP, Montaniel KRC, Staggs R, Guan W, Walek D, Desir S, Isakson BE, Barocas VH, Hall JL. Vascular biomechanical properties in mice with smooth muscle specific deletion of Ndst1. Mol Cell Biochem 2014; 385:225-38. [PMID: 24101444 PMCID: PMC4853023 DOI: 10.1007/s11010-013-1831-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2013] [Accepted: 09/26/2013] [Indexed: 12/19/2022]
Abstract
Heparan sulfate proteoglycans act as co-receptors for many chemokines and growth factors. The sulfation pattern of the heparan sulfate chains is a critical regulatory step affecting the binding of chemokines and growth factors. N-deacetylase-N-sulfotransferase1 (Ndst1) is one of the first enzymes to catalyze sulfation. Previously published work has shown that HSPGs alter tangent moduli and stiffness of tissues and cells. We hypothesized that loss of Ndst1 in smooth muscle would lead to significant changes in heparan sulfate modification and the elastic properties of arteries. In line with this hypothesis, the axial tangent modulus was significantly decreased in aorta from mice lacking Ndst1 in smooth muscle (SM22αcre(+)Ndst1(-/-), p < 0.05, n = 5). The decrease in axial tangent modulus was associated with a significant switch in myosin and actin types and isoforms expressed in aorta and isolated aortic vascular smooth muscle cells. In contrast, no changes were found in the compliance of smaller thoracodorsal arteries of SM22αcre(+)Ndst1(-/-) mice. In summary, the major findings of this study were that targeted ablation of Ndst1 in smooth muscle cells results in altered biomechanical properties of aorta and differential expression of myosin and actin types and isoforms.
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Affiliation(s)
- Neeta Adhikari
- Lillehei Heart Institute, Department of Medicine, University of Minnesota, Minneapolis, MN 55455
| | - Marie Billaud
- Robert M Berne Cardiovascular Research Center, School of Medicine, University of Virginia, Charlottesville, VA 22908
| | - Marjorie Carlson
- Lillehei Heart Institute, Department of Medicine, University of Minnesota, Minneapolis, MN 55455
| | - Spencer P. Lake
- Department of Biomedical Engineering, University of Minnesota, Minneapolis, Minnesota, MN 55455
| | - Kim Ramil C. Montaniel
- Lillehei Heart Institute, Department of Medicine, University of Minnesota, Minneapolis, MN 55455
| | - Rod Staggs
- Lillehei Heart Institute, Department of Medicine, University of Minnesota, Minneapolis, MN 55455
| | - Weihua Guan
- Department of Biostatistics, University of Minnesota, Minneapolis, MN 55455
| | - Dinesha Walek
- Biomedical Genomics Center, University of Minnesota, Minneapolis, MN 55455
| | - Snider Desir
- Lillehei Heart Institute, Department of Medicine, University of Minnesota, Minneapolis, MN 55455
| | - Brant E. Isakson
- Robert M Berne Cardiovascular Research Center, School of Medicine, University of Virginia, Charlottesville, VA 22908
| | - Victor H. Barocas
- Department of Biomedical Engineering, University of Minnesota, Minneapolis, Minnesota, MN 55455
| | - Jennifer L. Hall
- Lillehei Heart Institute, Department of Medicine, University of Minnesota, Minneapolis, MN 55455
- Division of Cardiology, Department of Medicine, University of Minnesota, Minneapolis, MN 55455
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Mul JD, Spruijt BM, Brakkee JH, Adan RAH. Melanocortin MC(4) receptor-mediated feeding and grooming in rodents. Eur J Pharmacol 2013; 719:192-201. [PMID: 23872405 DOI: 10.1016/j.ejphar.2013.04.060] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2013] [Revised: 03/27/2013] [Accepted: 04/03/2013] [Indexed: 02/04/2023]
Abstract
Decades ago it was recognized that the pharmacological profile of melanocortin ligands that stimulated grooming behavior in rats was strikingly similar to that of Xenopus laevis melanophore pigment dispersion. After cloning of the melanocortin MC1 receptor, expressed in melanocytes, and the melanocortin MC4 receptor, expressed mainly in brain, the pharmacological profiles of these receptors appeared to be very similar and it was demonstrated that these receptors mediate melanocortin-induced pigmentation and grooming respectively. Grooming is a low priority behavior that is concerned with care of body surface. Activation of central melanocortin MC4 receptors is also associated with meal termination, and continued postprandial stimulation of melanocortin MC4 receptors may stimulate natural postprandial grooming behavior as part of the behavioral satiety sequence. Indeed, melanocortins fail to suppress food intake or induce grooming behavior in melanocortin MC4 receptor-deficient rats. This review will focus on how melanocortins affect grooming behavior through the melanocortin MC4 receptor, and how melanocortin MC4 receptors mediate feeding behavior. This review also illustrates how melanocortins were the most likely candidates to mediate grooming and feeding based on the natural behaviors they induced.
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Affiliation(s)
- Joram D Mul
- Metabolic Diseases Institute, University of Cincinnati, 2170 East Galbraith Road, 45237 Cincinnati, Ohio, USA.
| | - Berry M Spruijt
- Department of Biology, Faculty of Beta Sciences, University of Utrecht, Padualaan 8, 3584 CH Utrecht, The Netherlands
| | - Jan H Brakkee
- Rudolf Magnus Institute of Neuroscience, Department of Neuroscience and Pharmacology, University Medical Center Utrecht, Universiteitsweg 100, 3584 CG Utrecht, The Netherlands
| | - Roger A H Adan
- Rudolf Magnus Institute of Neuroscience, Department of Neuroscience and Pharmacology, University Medical Center Utrecht, Universiteitsweg 100, 3584 CG Utrecht, The Netherlands
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Abstract
Heparan sulphate (HS) polysaccharides are covalently attached to the core proteins of various proteoglycans at cell surfaces and in the extracellular matrix. They are composed of alternating units of hexuronic acid and glucosamine, with sulphate substituents in complex and variable yet cell-specific patterns. Whereas HS is produced by virtually all cells in the body, heparin, a highly sulphated HS variant, is confined to connective-tissue-type mast cells. The polysaccharides interact with a multitude of proteins, mainly through ionic binding, and thereby control key processes in development and homoeostasis. Similar interactions also implicate HS in various pathophysiological settings, including cancer, amyloid diseases, infectious diseases, inflammatory conditions and some developmental disorders. Prospects for the development of HS-based drugs, which are still largely unrealized, are discussed.
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Affiliation(s)
- U Lindahl
- Department of Medical Biochemistry and Microbiology, Uppsala University, Uppsala, Sweden
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