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Gong X, Fu Y, Zhou L, Wei A, Pan C, Zhu T, Li H. Decoding chronic rhinosinusitis: A metabolomics-based approach. Int Forum Allergy Rhinol 2024; 14:828-840. [PMID: 38343156 DOI: 10.1002/alr.23331] [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: 09/11/2023] [Revised: 01/10/2024] [Accepted: 01/15/2024] [Indexed: 04/04/2024]
Abstract
BACKGROUND Chronic rhinosinusitis (CRS) is a common and intractable disease in otorhinolaryngology, laying a heavy burden on healthcare systems. The worldwide researchers are making efforts to find solutions to this disease. Metabolomics has recently gained more and more traction, and might become a promising tool to unravel the complexity of CRS. This paper provides an overview of current studies on the metabolomics of various CRS subtypes. METHODS We conducted a comprehensive literature search in PubMed, Web of Science, EMBASE, Google Scholar, and Cochrane Library, up to May 25, 2023. Search strategies incorporated key terms such as "chronic rhinosinusitis" and "metabolomics" with relevant synonyms and MeSH terms. Titles and abstracts of 86 screened articles were assessed for relevance to CRS and metabolomics. Methodological robustness, data reliability, and relevance were considered for shortlisted articles. RESULTS After the refined process, a total of 26 articles were included in this study and sorted out by research themes, methodology and pivotal discoveries. These included studies identified the metabolic pathways and markers related to the pathophysiology in each subtype of CRS. CONCLUSIONS Metabolomics helps to shed light on the complexity of CRS. The mentioned findings highlight the importance of specific metabolic pathways and markers in understanding the pathophysiology of CRS. Despite that, challenges and future directions in metabolomics research for CRS would be worth being further explored.
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Affiliation(s)
- Xinru Gong
- Health and Rehabilitation College, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, China
| | - Yijie Fu
- School of Preclinical Medicine, Chengdu University, Chengdu, Sichuan, China
| | - Lei Zhou
- Health and Rehabilitation College, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, China
| | - Aiming Wei
- Health and Rehabilitation College, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, China
| | - Chongsheng Pan
- Health and Rehabilitation College, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, China
| | - Tianmin Zhu
- Health and Rehabilitation College, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, China
| | - Hui Li
- School of Preclinical Medicine, Chengdu University, Chengdu, Sichuan, China
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2
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Li JX, Wang ZZ, Zhai GT, Chen CL, Zhu KZ, Yu Z, Liu Z. Untargeted metabolomic profiling identifies disease-specific and outcome-related signatures in chronic rhinosinusitis. J Allergy Clin Immunol 2022; 150:727-735.e6. [PMID: 35460727 DOI: 10.1016/j.jaci.2022.04.006] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Revised: 03/09/2022] [Accepted: 04/04/2022] [Indexed: 10/18/2022]
Abstract
BACKGROUND Although metabolomics provides novel insights into disease mechanisms and biomarkers, the metabolic alterations in local tissues affected by chronic rhinosinusitis (CRS) are unknown. OBJECTIVE This study aims to determine the metabolomic profiles of sinonasal tissues associated with different types of CRS and their treatment outcomes. METHODS Untargeted metabolomic profiling was performed on sinonasal tissues obtained from patients with eosinophilic CRS with nasal polyps (CRSwNP), noneosinophilic CRSwNP or CRS without nasal polyps (CRSsNP), and controls. The mRNA levels of inflammatory cytokines in nasal tissues were detected by quantitative RT-PCR. Nasal polyp tissues were cultured ex vivo and treated with glutathione. RESULTS Distinct metabolomic profiles were observed for the CRS subtypes. Eosinophilic CRSwNP had profoundly enhanced unsaturated fatty acid oxidization, which correlated with mucosal eosinophil numbers and IL-5 mRNA levels. Noneosinophilic CRSwNP was characterized by uric acid accumulation. Increased uric acid levels were positively correlated with mucosal neutrophil numbers and IFN-γ, IL-17A, IL-1β, and IL-8 mRNA levels. Disrupted purine metabolism was specifically detected in CRSsNP. Reduced levels of amino acid metabolites were found in eosinophilic CRSwNP and CRSsNP, and were inversely associated with mucosal total inflammatory cell numbers and inflammatory cytokines. Compared to non-difficult-to-treat CRS, difficult-to-treat CRS had higher glutathione disulfide levels, which were positively correlated with IL-8 mRNA levels. Glutathione treatment reduced IL-8 mRNA expression in cultured nasal polyp tissues. CONCLUSIONS Specific metabolic signatures are associated with different types of CRS, inflammatory patterns and disease outcomes, which may provide novel insights into pathophysiological mechanisms, subtype-specific biomarkers, and treatment targets of CRS.
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Affiliation(s)
- Jing-Xian Li
- Department of Otolaryngology-Head and Neck Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Zhe-Zheng Wang
- Department of Otolaryngology-Head and Neck Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Guan-Ting Zhai
- Department of Rhinology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Cai-Ling Chen
- Department of Otolaryngology-Head and Neck Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Ke-Zhang Zhu
- Department of Otolaryngology-Head and Neck Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Ze Yu
- Department of Otolaryngology-Head and Neck Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Zheng Liu
- Department of Otolaryngology-Head and Neck Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
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3
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Brzezinska P, Simpson NJ, Hubert F, Jacobs AN, Umana MB, MacKeil JL, Burke-Kleinman J, Payne DM, Ferguson AV, Maurice DH. Phosphodiesterase 1C integrates store-operated calcium entry and cAMP signaling in leading-edge protrusions of migrating human arterial myocytes. J Biol Chem 2021; 296:100606. [PMID: 33789162 PMCID: PMC8095186 DOI: 10.1016/j.jbc.2021.100606] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Revised: 03/19/2021] [Accepted: 03/26/2021] [Indexed: 01/17/2023] Open
Abstract
In addition to maintaining cellular ER Ca2+ stores, store-operated Ca2+ entry (SOCE) regulates several Ca2+-sensitive cellular enzymes, including certain adenylyl cyclases (ADCYs), enzymes that synthesize the secondary messenger cyclic AMP (cAMP). Ca2+, acting with calmodulin, can also increase the activity of PDE1-family phosphodiesterases (PDEs), which cleave the phosphodiester bond of cAMP. Surprisingly, SOCE-regulated cAMP signaling has not been studied in cells expressing both Ca2+-sensitive enzymes. Here, we report that depletion of ER Ca2+ activates PDE1C in human arterial smooth muscle cells (HASMCs). Inhibiting the activation of PDE1C reduced the magnitude of both SOCE and subsequent Ca2+/calmodulin–mediated activation of ADCY8 in these cells. Because inhibiting or silencing Ca2+-insensitive PDEs had no such effects, these data identify PDE1C-mediated hydrolysis of cAMP as a novel and important link between SOCE and its activation of ADCY8. Functionally, we showed that PDE1C regulated the formation of leading-edge protrusions in HASMCs, a critical early event in cell migration. Indeed, we found that PDE1C populated the tips of newly forming leading-edge protrusions in polarized HASMCs, and co-localized with ADCY8, the Ca2+ release activated Ca2+ channel subunit, Orai1, the cAMP-effector, protein kinase A, and an A-kinase anchoring protein, AKAP79. Because this polarization could allow PDE1C to control cAMP signaling in a hyper-localized manner, we suggest that PDE1C-selective therapeutic agents could offer increased spatial specificity in HASMCs over agents that regulate cAMP globally in cells. Similarly, such agents could also prove useful in regulating crosstalk between Ca2+/cAMP signaling in other cells in which dysregulated migration contributes to human pathology, including certain cancers.
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Affiliation(s)
- Paulina Brzezinska
- Department of Biomedical and Molecular Sciences, Queen's University, Kingston, Ontario, Canada
| | - Nicholas J Simpson
- Department of Biomedical and Molecular Sciences, Queen's University, Kingston, Ontario, Canada
| | - Fabien Hubert
- Department of Biomedical and Molecular Sciences, Queen's University, Kingston, Ontario, Canada
| | - Ariana N Jacobs
- Department of Biomedical and Molecular Sciences, Queen's University, Kingston, Ontario, Canada
| | - M Bibiana Umana
- Department of Biomedical and Molecular Sciences, Queen's University, Kingston, Ontario, Canada
| | - Jodi L MacKeil
- Department of Biomedical and Molecular Sciences, Queen's University, Kingston, Ontario, Canada
| | - Jonah Burke-Kleinman
- Department of Biomedical and Molecular Sciences, Queen's University, Kingston, Ontario, Canada
| | - Darrin M Payne
- Department of Surgery, Queen's University, Kingston, Ontario, Canada
| | - Alastair V Ferguson
- Department of Biomedical and Molecular Sciences, Queen's University, Kingston, Ontario, Canada
| | - Donald H Maurice
- Department of Biomedical and Molecular Sciences, Queen's University, Kingston, Ontario, Canada.
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4
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Manoury B, Idres S, Leblais V, Fischmeister R. Ion channels as effectors of cyclic nucleotide pathways: Functional relevance for arterial tone regulation. Pharmacol Ther 2020; 209:107499. [PMID: 32068004 DOI: 10.1016/j.pharmthera.2020.107499] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2018] [Accepted: 02/05/2020] [Indexed: 02/07/2023]
Abstract
Numerous mediators and drugs regulate blood flow or arterial pressure by acting on vascular tone, involving cyclic nucleotide intracellular pathways. These signals lead to regulation of several cellular effectors, including ion channels that tune cell membrane potential, Ca2+ influx and vascular tone. The characterization of these vasocontrictive or vasodilating mechanisms has grown in complexity due to i) the variety of ion channels that are expressed in both vascular endothelial and smooth muscle cells, ii) the heterogeneity of responses among the various vascular beds, and iii) the number of molecular mechanisms involved in cyclic nucleotide signalling in health and disease. This review synthesizes key data from literature that highlight ion channels as physiologically relevant effectors of cyclic nucleotide pathways in the vasculature, including the characterization of the molecular mechanisms involved. In smooth muscle cells, cation influx or chloride efflux through ion channels are associated with vasoconstriction, whereas K+ efflux repolarizes the cell membrane potential and mediates vasodilatation. Both categories of ion currents are under the influence of cAMP and cGMP pathways. Evidence that some ion channels are influenced by CN signalling in endothelial cells will also be presented. Emphasis will also be put on recent data touching a variety of determinants such as phosphodiesterases, EPAC and kinase anchoring, that complicate or even challenge former paradigms.
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Affiliation(s)
- Boris Manoury
- Inserm, Umr-S 1180, Université Paris-Saclay, Châtenay-Malabry, France.
| | - Sarah Idres
- Inserm, Umr-S 1180, Université Paris-Saclay, Châtenay-Malabry, France
| | - Véronique Leblais
- Inserm, Umr-S 1180, Université Paris-Saclay, Châtenay-Malabry, France
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5
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Ledard N, Liboz A, Blondeau B, Babiak M, Moulin C, Vallin B, Guillas I, Mateo V, Jumeau C, Blirando K, Meilhac O, Limon I, Glorian M. Slug, a Cancer-Related Transcription Factor, is Involved in Vascular Smooth Muscle Cell Transdifferentiation Induced by Platelet-Derived Growth Factor-BB During Atherosclerosis. J Am Heart Assoc 2020; 9:e014276. [PMID: 31959031 PMCID: PMC7033846 DOI: 10.1161/jaha.119.014276] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Background Heart attacks and stroke often result from occlusive thrombi following the rupture of vulnerable atherosclerotic plaques. Vascular smooth muscle cells (VSMCs) play a pivotal role in plaque vulnerability because of their switch towards a proinflammatory/macrophage-like phenotype when in the context of atherosclerosis. The prometastatic transcription factor Slug/Snail2 is a critical regulator of cell phenotypic transition. Here, we aimed to investigate the role of Slug in the transdifferentiation process of VSMCs occurring during atherogenesis. Methods and Results In rat and human primary aortic smooth muscle cells, Slug protein expression is strongly and rapidly increased by platelet-derived growth factor-BB (PDGF-BB). PDGF-BB increases Slug protein without affecting mRNA levels indicating that this growth factor stabilizes Slug protein. Immunocytochemistry and subcellular fractionation experiments reveal that PDGF-BB triggers a rapid accumulation of Slug in VSMC nuclei. Using pharmacological tools, we show that the PDGF-BB-dependent mechanism of Slug stabilization in VSMCs involves the extracellular signal-regulated kinase 1/2 pathway. Immunohistochemistry experiments on type V and type VI atherosclerotic lesions of human carotids show smooth muscle-specific myosin heavy chain-/Slug-positive cells surrounding the prothrombotic lipid core. In VSMCs, Slug siRNAs inhibit prostaglandin E2 secretion and prevent the inhibition of cholesterol efflux gene expression mediated by PDGF-BB, known to be involved in plaque vulnerability and/or thrombogenicity. Conclusions Our results highlight, for the first time, a role of Slug in aortic smooth muscle cell transdifferentiation and enable us to consider Slug as an actor playing a role in the atherosclerotic plaque progression towards a life-threatening phenotype. This also argues for common features between acute cardiovascular events and cancer.
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Affiliation(s)
- Nahéma Ledard
- Institut de Biologie Paris-Seine (IBPS) Biological Adaptation and Ageing UMR 8256 Sorbonne Université Paris France
| | - Alexandrine Liboz
- INSERM Saint-Antoine Research Center Sorbonne Université Paris France
| | - Bertrand Blondeau
- INSERM Saint-Antoine Research Center Sorbonne Université Paris France
| | - Mégane Babiak
- Institut de Biologie Paris-Seine (IBPS) Biological Adaptation and Ageing UMR 8256 Sorbonne Université Paris France
| | - Célia Moulin
- Institut de Biologie Paris-Seine (IBPS) Biological Adaptation and Ageing UMR 8256 Sorbonne Université Paris France
| | - Benjamin Vallin
- Institut de Biologie Paris-Seine (IBPS) Biological Adaptation and Ageing UMR 8256 Sorbonne Université Paris France
| | - Isabelle Guillas
- National Institute for Health and Medical Research (INSERM) Faculté de Médecine Pitié Salpétrière UMR-S 1166 ICAN Sorbonne Université Paris France
| | - Véronique Mateo
- CIMI-Paris INSERM U1135 Faculté de Médecine Sorbonne-Université Site Pitié-Salpêtrière Sorbonne Université Paris France
| | | | - Karl Blirando
- Institut de Biologie Paris-Seine (IBPS) Biological Adaptation and Ageing UMR 8256 Sorbonne Université Paris France
| | - Olivier Meilhac
- Université de La Réunion Diabète, Athérothrombose, Thérapies, Réunion, Océan Indien (UMR DéTROI U1188) - -CYROI- Sainte Clotilde La Réunion
| | - Isabelle Limon
- Institut de Biologie Paris-Seine (IBPS) Biological Adaptation and Ageing UMR 8256 Sorbonne Université Paris France
| | - Martine Glorian
- Institut de Biologie Paris-Seine (IBPS) Biological Adaptation and Ageing UMR 8256 Sorbonne Université Paris France
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6
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Vallin B, Legueux-Cajgfinger Y, Clément N, Glorian M, Duca L, Vincent P, Limon I, Blaise R. Novel short isoforms of adenylyl cyclase as negative regulators of cAMP production. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2018; 1865:1326-1340. [PMID: 29940197 DOI: 10.1016/j.bbamcr.2018.06.012] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 01/29/2018] [Revised: 06/15/2018] [Accepted: 06/20/2018] [Indexed: 12/22/2022]
Abstract
Here, we cloned a new family of four adenylyl cyclase (AC) splice variants from interleukin-1β (IL-1β)-transdifferentiated vascular smooth muscle cells (VSMCs) encoding short forms of AC8 that we have named "AC8E-H". Using biosensor imaging and biochemical approaches, we showed that AC8E-H isoforms have no cyclase activity and act as dominant-negative regulators by forming heterodimers with other full-length ACs, impeding the traffic of functional units towards the plasma membrane. The existence of these dominant-negative isoforms may account for an unsuspected additional degree of cAMP signaling regulation. It also reconciles the induction of an AC in transdifferentiated VSMCs with the vasoprotective influence of cAMP. The generation of alternative splice variants of ACs may constitute a generalized strategy of adaptation to the cell's environment whose scope had so far been ignored in physiological and/or pathological contexts.
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Affiliation(s)
- Benjamin Vallin
- Sorbonne Université, Université Pierre et Marie Curie (UPMC), Institut de Biologie Paris-Seine (IBPS), UMR CNRS 8256 Adaptation biologique et vieillissement (B2A), 75005 Paris, France
| | - Yohan Legueux-Cajgfinger
- Sorbonne Université, Université Pierre et Marie Curie (UPMC), Institut de Biologie Paris-Seine (IBPS), UMR CNRS 8256 Adaptation biologique et vieillissement (B2A), 75005 Paris, France
| | - Nathalie Clément
- Sorbonne Université, Université Pierre et Marie Curie (UPMC), Institut de Biologie Paris-Seine (IBPS), UMR CNRS 8256 Adaptation biologique et vieillissement (B2A), 75005 Paris, France
| | - Martine Glorian
- Sorbonne Université, Université Pierre et Marie Curie (UPMC), Institut de Biologie Paris-Seine (IBPS), UMR CNRS 8256 Adaptation biologique et vieillissement (B2A), 75005 Paris, France
| | - Laurent Duca
- UFR Sciences Exactes et Naturelles, Université de Reims Champagne Ardenne (URCA), UMR CNRS 7369 Matrice Extracellulaire et Dynamique Cellulaire (MEDyC), Laboratoire Signalisation et Récepteurs Matriciels (SiRMa), Campus Moulin de la Housse, 51687 Reims, France
| | - Pierre Vincent
- Sorbonne Université, Université Pierre et Marie Curie (UPMC), Institut de Biologie Paris-Seine (IBPS), UMR CNRS 8256 Adaptation biologique et vieillissement (B2A), 75005 Paris, France.
| | - Isabelle Limon
- Sorbonne Université, Université Pierre et Marie Curie (UPMC), Institut de Biologie Paris-Seine (IBPS), UMR CNRS 8256 Adaptation biologique et vieillissement (B2A), 75005 Paris, France.
| | - Régis Blaise
- Sorbonne Université, Université Pierre et Marie Curie (UPMC), Institut de Biologie Paris-Seine (IBPS), UMR CNRS 8256 Adaptation biologique et vieillissement (B2A), 75005 Paris, France
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7
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Zhi H, Gong FH, Cheng WL, Zhu K, Chen L, Yao Y, Ye X, Zhu XY, Li H. Tollip Negatively Regulates Vascular Smooth Muscle Cell-Mediated Neointima Formation by Suppressing Akt-Dependent Signaling. J Am Heart Assoc 2018; 7:e006851. [PMID: 29887521 PMCID: PMC6220530 DOI: 10.1161/jaha.117.006851] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/06/2017] [Accepted: 11/16/2017] [Indexed: 12/23/2022]
Abstract
BACKGROUND Tollip, a well-established endogenous modulator of Toll-like receptor signaling, is involved in cardiovascular diseases. The aim of this study was to investigate the role of Tollip in neointima formation and its associated mechanisms. METHODS AND RESULTS In this study, transient increases in Tollip expression were observed in platelet-derived growth factor-BB-treated vascular smooth muscle cells and following vascular injury in mice. We then applied loss-of-function and gain-of-function approaches to elucidate the effects of Tollip on neointima formation. While exaggerated neointima formation was observed in Tollip-deficient murine neointima formation models, Tollip overexpression alleviated vascular injury-induced neointima formation by preventing vascular smooth muscle cell proliferation, dedifferentiation, and migration. Mechanistically, we demonstrated that Tollip overexpression may exert a protective role in the vasculature by suppressing Akt-dependent signaling, which was further confirmed in rescue experiments using the Akt-specific inhibitor (AKTI). CONCLUSIONS Our findings indicate that Tollip protects against neointima formation by negatively regulating vascular smooth muscle cell proliferation, dedifferentiation, and migration in an Akt-dependent manner. Upregulation of Tollip may be a promising strategy for treating vascular remodeling-related diseases.
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MESH Headings
- Animals
- Carotid Artery Injuries/enzymology
- Carotid Artery Injuries/genetics
- Carotid Artery Injuries/pathology
- Carotid Artery, External/enzymology
- Carotid Artery, External/pathology
- Cell Dedifferentiation
- Cell Movement
- Cell Proliferation
- Cells, Cultured
- Disease Models, Animal
- Humans
- Intracellular Signaling Peptides and Proteins/deficiency
- Intracellular Signaling Peptides and Proteins/genetics
- Intracellular Signaling Peptides and Proteins/metabolism
- Mice, Inbred C57BL
- Mice, Transgenic
- Muscle, Smooth, Vascular/enzymology
- Muscle, Smooth, Vascular/injuries
- Muscle, Smooth, Vascular/pathology
- Myocytes, Smooth Muscle/enzymology
- Myocytes, Smooth Muscle/pathology
- Neointima
- Peripheral Arterial Disease/enzymology
- Peripheral Arterial Disease/pathology
- Proto-Oncogene Proteins c-akt/metabolism
- Signal Transduction
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Affiliation(s)
- Hong Zhi
- Department of Cardiology, Zhongda Hospital Affiliated to Southeast University, Nanjing, China
| | - Fu-Han Gong
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, China
- Basic Medical School, Wuhan University, Wuhan, China
- Institute of Model Animal of Wuhan University, Wuhan, China
| | - Wen-Lin Cheng
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, China
- Basic Medical School, Wuhan University, Wuhan, China
- Institute of Model Animal of Wuhan University, Wuhan, China
| | - Kongbo Zhu
- Department of Cardiology, Zhongda Hospital Affiliated to Southeast University, Nanjing, China
| | - Long Chen
- Department of Cardiology, Zhongda Hospital Affiliated to Southeast University, Nanjing, China
| | - Yuyu Yao
- Department of Cardiology, Zhongda Hospital Affiliated to Southeast University, Nanjing, China
| | - Xingzhou Ye
- Department of Cardiology, Zhongda Hospital Affiliated to Southeast University, Nanjing, China
| | - Xue-Yong Zhu
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, China
- Basic Medical School, Wuhan University, Wuhan, China
- Institute of Model Animal of Wuhan University, Wuhan, China
| | - Hongliang Li
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, China
- Basic Medical School, Wuhan University, Wuhan, China
- Institute of Model Animal of Wuhan University, Wuhan, China
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8
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Davies JMS, Cillard J, Friguet B, Cadenas E, Cadet J, Cayce R, Fishmann A, Liao D, Bulteau AL, Derbré F, Rébillard A, Burstein S, Hirsch E, Kloner RA, Jakowec M, Petzinger G, Sauce D, Sennlaub F, Limon I, Ursini F, Maiorino M, Economides C, Pike CJ, Cohen P, Salvayre AN, Halliday MR, Lundquist AJ, Jakowec NA, Mechta-Grigoriou F, Mericskay M, Mariani J, Li Z, Huang D, Grant E, Forman HJ, Finch CE, Sun PY, Pomatto LCD, Agbulut O, Warburton D, Neri C, Rouis M, Cillard P, Capeau J, Rosenbaum J, Davies KJA. The Oxygen Paradox, the French Paradox, and age-related diseases. GeroScience 2017; 39:499-550. [PMID: 29270905 PMCID: PMC5745211 DOI: 10.1007/s11357-017-0002-y] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2017] [Accepted: 11/09/2017] [Indexed: 02/06/2023] Open
Abstract
A paradox is a seemingly absurd or impossible concept, proposition, or theory that is often difficult to understand or explain, sometimes apparently self-contradictory, and yet ultimately correct or true. How is it possible, for example, that oxygen "a toxic environmental poison" could be also indispensable for life (Beckman and Ames Physiol Rev 78(2):547-81, 1998; Stadtman and Berlett Chem Res Toxicol 10(5):485-94, 1997)?: the so-called Oxygen Paradox (Davies and Ursini 1995; Davies Biochem Soc Symp 61:1-31, 1995). How can French people apparently disregard the rule that high dietary intakes of cholesterol and saturated fats (e.g., cheese and paté) will result in an early death from cardiovascular diseases (Renaud and de Lorgeril Lancet 339(8808):1523-6, 1992; Catalgol et al. Front Pharmacol 3:141, 2012; Eisenberg et al. Nat Med 22(12):1428-1438, 2016)?: the so-called, French Paradox. Doubtless, the truth is not a duality and epistemological bias probably generates apparently self-contradictory conclusions. Perhaps nowhere in biology are there so many apparently contradictory views, and even experimental results, affecting human physiology and pathology as in the fields of free radicals and oxidative stress, antioxidants, foods and drinks, and dietary recommendations; this is particularly true when issues such as disease-susceptibility or avoidance, "healthspan," "lifespan," and ageing are involved. Consider, for example, the apparently paradoxical observation that treatment with low doses of a substance that is toxic at high concentrations may actually induce transient adaptations that protect against a subsequent exposure to the same (or similar) toxin. This particular paradox is now mechanistically explained as "Adaptive Homeostasis" (Davies Mol Asp Med 49:1-7, 2016; Pomatto et al. 2017a; Lomeli et al. Clin Sci (Lond) 131(21):2573-2599, 2017; Pomatto and Davies 2017); the non-damaging process by which an apparent toxicant can activate biological signal transduction pathways to increase expression of protective genes, by mechanisms that are completely different from those by which the same agent induces toxicity at high concentrations. In this review, we explore the influences and effects of paradoxes such as the Oxygen Paradox and the French Paradox on the etiology, progression, and outcomes of many of the major human age-related diseases, as well as the basic biological phenomenon of ageing itself.
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Affiliation(s)
- Joanna M S Davies
- The Medical Group, Internal Medicine, Rheumatology & Osteoporosis, Dermatology, Pulmonology, Ophthalmology, and Cardiology; the Hospital of the Good Samaritan, Los Angeles, CA, 90017, USA
- Leonard Davis School of Gerontology of the Ethel Percy Andrus Gerontology Center, University of Southern California, Los Angeles, CA, 90089-0191, USA
| | - Josiane Cillard
- Lab de Biologie Cellulaire et Végétale, Faculté de Pharmacie, Université de Rennes, 35043, Rennes Cedex, France
| | - Bertrand Friguet
- Institut de Biologie Paris-Seine (IBPS), UMR CNRS 8256, Biological Adaptation and Ageing, Sorbonne Universités, UPMC Univ Paris 06, 75005, Paris, France
- INSERM ERL U1164, 75005, Paris, France
| | - Enrique Cadenas
- Leonard Davis School of Gerontology of the Ethel Percy Andrus Gerontology Center, University of Southern California, Los Angeles, CA, 90089-0191, USA
- School of Pharmacy, University of Southern California, Los Angeles, CA, 90089-9121, USA
- Department of Biochemistry & Molecular Medicine, Keck School of Medicine of USC, University of Southern California, Los Angeles, CA, 90033, USA
| | - Jean Cadet
- Département de Médecine nucléaire et Radiobiologie, Faculté de médecine et des sciences de la santé, Université de Sherbrooke, Sherbrooke, Québec, J1H 5N4, Canada
| | - Rachael Cayce
- The Medical Group, Internal Medicine, Rheumatology & Osteoporosis, Dermatology, Pulmonology, Ophthalmology, and Cardiology; the Hospital of the Good Samaritan, Los Angeles, CA, 90017, USA
| | - Andrew Fishmann
- The Medical Group, Internal Medicine, Rheumatology & Osteoporosis, Dermatology, Pulmonology, Ophthalmology, and Cardiology; the Hospital of the Good Samaritan, Los Angeles, CA, 90017, USA
| | - David Liao
- The Medical Group, Internal Medicine, Rheumatology & Osteoporosis, Dermatology, Pulmonology, Ophthalmology, and Cardiology; the Hospital of the Good Samaritan, Los Angeles, CA, 90017, USA
| | - Anne-Laure Bulteau
- Institut de Génomique Fonctionnelle de Lyon,ENS de Lyon, CNRS, 69364, Lyon Cedex 07, France
| | - Frédéric Derbré
- Laboratory for Movement, Sport and Health Sciences-EA 1274, M2S, Université de Rennes 2-ENS, Bruz, 35170, Rennes, France
| | - Amélie Rébillard
- Laboratory for Movement, Sport and Health Sciences-EA 1274, M2S, Université de Rennes 2-ENS, Bruz, 35170, Rennes, France
| | - Steven Burstein
- The Medical Group, Internal Medicine, Rheumatology & Osteoporosis, Dermatology, Pulmonology, Ophthalmology, and Cardiology; the Hospital of the Good Samaritan, Los Angeles, CA, 90017, USA
| | - Etienne Hirsch
- INSERM UMR 1127-CNRS UMR 7225, Institut du cerveau et de la moelle épinière-ICM Thérapeutique Expérimentale de la Maladie de Parkinson, Université Pierre et Marie Curie, 75651, Paris Cedex 13, France
| | - Robert A Kloner
- Huntington Medical Research Institutes, Pasadena, CA, 91105, USA
| | - Michael Jakowec
- Department of Neurology, Keck School of Medicine, University of Southern California, Los Angeles, CA, 90033, USA
| | - Giselle Petzinger
- Department of Neurology, Keck School of Medicine, University of Southern California, Los Angeles, CA, 90033, USA
| | - Delphine Sauce
- Chronic infections and Immune ageing, INSERM U1135, Hopital Pitie-Salpetriere, Pierre et Marie Curie University, 75013, Paris, France
| | | | - Isabelle Limon
- Institut de Biologie Paris-Seine (IBPS), UMR CNRS 8256, Biological Adaptation and Ageing, Sorbonne Universités, UPMC Univ Paris 06, 75005, Paris, France
| | - Fulvio Ursini
- Department of Molecular Medicine, University of Padova, 35121, Padova, Italy
| | - Matilde Maiorino
- Department of Molecular Medicine, University of Padova, 35121, Padova, Italy
| | - Christina Economides
- Los Angeles Cardiology Associates, Hospital of the Good Samaritan, Los Angeles, CA, 90017, USA
| | - Christian J Pike
- Leonard Davis School of Gerontology of the Ethel Percy Andrus Gerontology Center, University of Southern California, Los Angeles, CA, 90089-0191, USA
- Division of Neurobiology, Department of Biological Sciences of the Dornsife College of Letters, Arts, and Sciences, University of Southern California, Los Angeles, CA, 90089-0191, USA
| | - Pinchas Cohen
- Leonard Davis School of Gerontology of the Ethel Percy Andrus Gerontology Center, University of Southern California, Los Angeles, CA, 90089-0191, USA
- Keck School of Medicine of USC, University of Southern California, Los Angeles, CA, 90033, USA
| | - Anne Negre Salvayre
- Lipid peroxidation, Signalling and Vascular Diseases INSERM U1048, 31432, Toulouse Cedex 4, France
| | - Matthew R Halliday
- Department of Neurology, Keck School of Medicine, University of Southern California, Los Angeles, CA, 90033, USA
| | - Adam J Lundquist
- Department of Neurology, Keck School of Medicine, University of Southern California, Los Angeles, CA, 90033, USA
| | - Nicolaus A Jakowec
- Department of Neurology, Keck School of Medicine, University of Southern California, Los Angeles, CA, 90033, USA
| | | | - Mathias Mericskay
- Laboratoire de Signalisation et Physiopathologie Cardiovasculaire-Inserm UMR-S 1180, Faculté de Pharmacie, Université Paris-Sud, 92296 Châtenay-Malabry, Paris, France
| | - Jean Mariani
- Institut de Biologie Paris-Seine (IBPS), UMR CNRS 8256, Biological Adaptation and Ageing, Sorbonne Universités, UPMC Univ Paris 06, 75005, Paris, France
| | - Zhenlin Li
- Institut de Biologie Paris-Seine (IBPS), UMR CNRS 8256, Biological Adaptation and Ageing, Sorbonne Universités, UPMC Univ Paris 06, 75005, Paris, France
- INSERM ERL U1164, 75005, Paris, France
| | - David Huang
- Department of Radiation Oncology, Hospital of the Good Samaritan, Los Angeles, CA, 90017, USA
| | - Ellsworth Grant
- Department of Oncology & Hematology, Hospital of the Good Samaritan, Los Angeles, CA, 90017, USA
| | - Henry J Forman
- Leonard Davis School of Gerontology of the Ethel Percy Andrus Gerontology Center, University of Southern California, Los Angeles, CA, 90089-0191, USA
| | - Caleb E Finch
- Leonard Davis School of Gerontology of the Ethel Percy Andrus Gerontology Center, University of Southern California, Los Angeles, CA, 90089-0191, USA
- Los Angeles Cardiology Associates, Hospital of the Good Samaritan, Los Angeles, CA, 90017, USA
- Division of Molecular & Computational Biology, Department of Biological Sciences of the Dornsife College of Letters, Arts, and Sciences, University of Southern California, Los Angeles, CA, 90089-0191, USA
| | - Patrick Y Sun
- Leonard Davis School of Gerontology of the Ethel Percy Andrus Gerontology Center, University of Southern California, Los Angeles, CA, 90089-0191, USA
- Division of Molecular & Computational Biology, Department of Biological Sciences of the Dornsife College of Letters, Arts, and Sciences, University of Southern California, Los Angeles, CA, 90089-0191, USA
| | - Laura C D Pomatto
- Leonard Davis School of Gerontology of the Ethel Percy Andrus Gerontology Center, University of Southern California, Los Angeles, CA, 90089-0191, USA
- Division of Molecular & Computational Biology, Department of Biological Sciences of the Dornsife College of Letters, Arts, and Sciences, University of Southern California, Los Angeles, CA, 90089-0191, USA
| | - Onnik Agbulut
- Institut de Biologie Paris-Seine (IBPS), UMR CNRS 8256, Biological Adaptation and Ageing, Sorbonne Universités, UPMC Univ Paris 06, 75005, Paris, France
| | - David Warburton
- Children's Hospital of Los Angeles, Developmental Biology, Regenerative Medicine and Stem Cell Therapeutics program and the Center for Environmental Impact on Global Health Across the Lifespan at The Saban Research Institute, Los Angeles, CA, 90027, USA
- Department of Pediatrics, Keck School of Medicine of USC, University of Southern California, Los Angeles, CA, 90033, USA
| | - Christian Neri
- Institut de Biologie Paris-Seine (IBPS), UMR CNRS 8256, Biological Adaptation and Ageing, Sorbonne Universités, UPMC Univ Paris 06, 75005, Paris, France
| | - Mustapha Rouis
- Institut de Biologie Paris-Seine (IBPS), UMR CNRS 8256, Biological Adaptation and Ageing, Sorbonne Universités, UPMC Univ Paris 06, 75005, Paris, France
- INSERM ERL U1164, 75005, Paris, France
| | - Pierre Cillard
- Lab de Biologie Cellulaire et Végétale, Faculté de Pharmacie, Université de Rennes, 35043, Rennes Cedex, France
| | - Jacqueline Capeau
- DR Saint-Antoine UMR_S938, UPMC, Inserm Faculté de Médecine, Université Pierre et Marie Curie, 75012, Paris, France
| | - Jean Rosenbaum
- Scientific Service of the Embassy of France in the USA, Consulate General of France in Los Angeles, Los Angeles, CA, 90025, USA
| | - Kelvin J A Davies
- Leonard Davis School of Gerontology of the Ethel Percy Andrus Gerontology Center, University of Southern California, Los Angeles, CA, 90089-0191, USA.
- Department of Biochemistry & Molecular Medicine, Keck School of Medicine of USC, University of Southern California, Los Angeles, CA, 90033, USA.
- Division of Molecular & Computational Biology, Department of Biological Sciences of the Dornsife College of Letters, Arts, and Sciences, University of Southern California, Los Angeles, CA, 90089-0191, USA.
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9
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Wang Y, Wang X, Liang X, Wu J, Dong S, Li H, Jin M, Sun D, Zhang W, Zhong X. Inhibition of hydrogen sulfide on the proliferation of vascular smooth muscle cells involved in the modulation of calcium sensing receptor in high homocysteine. Exp Cell Res 2016; 347:184-191. [PMID: 27502588 DOI: 10.1016/j.yexcr.2016.08.004] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2016] [Revised: 08/01/2016] [Accepted: 08/04/2016] [Indexed: 11/18/2022]
Abstract
Hyperhomocysteinemia induces the proliferation of vascular smooth muscle cells (VSMCs). Hydrogen sulfide (H2S) inhibits the phenotype switch of VSMCs and calcium-sensing receptor (CaSR) regulated the production of endogenous H2S. However, whether CaSR inhibits the proliferation of VSMCs by regulating the endogenous cystathionine-gamma-lyase (CSE, a major enzyme that produces H2S) pathway in high homocysteine (HHcy) has not been previously investigated. The intracellular calcium concentration, the concentration of H2S, the cell viability, the proliferation and the expression of proteins of cultured VSMCs from rat thoracic aortas were measured, respectively. The results showed that the [Ca(2+)]i and the expression of p-CaMK and CSE increased upon treatment with CaSR agonist. In HHcy, the H2S concentration decrease, the proliferation and migration rate increased, the expression of Cyclin D1, PCNA, Osteopontin and p-Erk1/2 increased while the α-SM actin, P21(Cip/WAK-1) and Calponin decreased. The CaSR agonist or exogenous H2S significantly reversed the changes of VSMCs caused by HHcy. In conclusion, our results demonstrated that CaSR regulate the endogenous CSE/H2S is related to the PLC-IP3 receptor and CaM signal pathways which inhibit the proliferation of VSMCs, and the latter is involved in the Erk1/2 dependent signal pathway in high homocysteine.
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Affiliation(s)
- Yuwen Wang
- Department of Clinical Laboratory, The second Affiliated Hospital of Harbin Medical University, Harbin 150081, China
| | - Xiyao Wang
- Department of Clinical Laboratory, The second Affiliated Hospital of Harbin Medical University, Harbin 150081, China
| | - Xiaohui Liang
- Department of Radiology, Central Hospital of the Red Cross, Harbin 150080, China
| | - Jichao Wu
- Department of Pathophysiology, Harbin Medical University, Harbin 150081, China
| | - Shiyun Dong
- Department of Pathophysiology, Harbin Medical University, Harbin 150081, China
| | - Hongzhu Li
- Department of Pathophysiology, Harbin Medical University, Harbin 150081, China
| | - Meili Jin
- Department of Clinical Laboratory, The second Affiliated Hospital of Harbin Medical University, Harbin 150081, China
| | - Dianjun Sun
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin 150086, China
| | - Weihua Zhang
- Department of Pathophysiology, Harbin Medical University, Harbin 150081, China
| | - Xin Zhong
- Department of Pathophysiology, Harbin Medical University, Harbin 150081, China.
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10
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SERCA2a gene transfer prevents intimal proliferation in an organ culture of human internal mammary artery. Gene Ther 2012; 20:396-406. [PMID: 22763406 PMCID: PMC3465616 DOI: 10.1038/gt.2012.50] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Coronary restenosis, a major complication of percutaneous balloon angioplasty, results from neointimal proliferation of vascular smooth muscle cells (VSMCs). The sarco/endoplasmic reticulum calcium ATPase isoform 2a (SERCA2a), specific to contractile VSMCs, has been reported previously to be involved in the control of the Ca2+-signaling pathways governing proliferation and migration. Moreover, SERCA2a gene transfer was reported to inhibit in vitro VSMC proliferation and to prevent neointimal thickening in a rat carotid injury model. The aim of this study was to evaluate the potential therapeutic interest of SERCA2a gene transfer for prevention of in-stent restenosis using a human ex vivo model of left internal mammary artery (hIMA) intimal thickening. Left hIMAs, obtained at the time of aorto-coronary bypass surgeries, were subjected to balloon dilatation followed by infection for 30 min with adenoviruses encoding either human SERCA2 and GFP or control gene (beta-galactosidase) and GFP. Proliferation of subendothelial VSMCs and neointimal thickening were observed in balloon-injured hIMA maintained 14 days in organ culture under constant pressure and perfusion. SERCA2a gene transfer prevented vascular remodeling and significantly (p<0.01, n=5) reduced neointimal thickening in injured arteries (intima/media ratio was 0.07 ± 0.01 vs 0.40 ± 0.03 in βGal-infected arteries). These findings could have potential implications for treatment of pathological in stent-restenosis.
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11
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Keuylian Z, de Baaij JHF, Gueguen M, Glorian M, Rouxel C, Merlet E, Lipskaia L, Blaise R, Mateo V, Limon I. The Notch pathway attenuates interleukin 1β (IL1β)-mediated induction of adenylyl cyclase 8 (AC8) expression during vascular smooth muscle cell (VSMC) trans-differentiation. J Biol Chem 2012; 287:24978-89. [PMID: 22613711 DOI: 10.1074/jbc.m111.292516] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Vascular smooth muscle cell (VSMC) trans-differentiation, or their switch from a contractile/quiescent to a secretory/inflammatory/migratory state, is known to play an important role in pathological vascular remodeling including atherosclerosis and postangioplasty restenosis. Several reports have established the Notch pathway as tightly regulating VSMC response to various stress factors through growth, migration, apoptosis, and de-differentiation. More recently, we showed that alterations of the Notch pathway also govern VSMC acquisition of the inflammatory state, one of the major events accelerating atherosclerosis. We also evidenced that the inflammatory context of atherosclerosis triggers a de novo expression of adenylyl cyclase isoform 8 (AC8), associated with the properties developed by trans-differentiated VSMCs. As an initial approach to understanding the regulation of AC8 expression, we examined the role of the Notch pathway. Here we show that inhibiting the Notch pathway enhances the effect of IL1β on AC8 expression, amplifies its deleterious effects on the VSMC trans-differentiated phenotype, and decreases Notch target genes Hrt1 and Hrt3. Conversely, Notch activation resulted in blocking AC8 expression and up-regulated Hrt1 and Hrt3 expression. Furthermore, overexpressing Hrt1 and Hrt3 significantly decreased IL1β-induced AC8 expression. In agreement with these in vitro findings, the in vivo rat carotid balloon-injury model of restenosis evidenced that AC8 de novo expression coincided with down-regulation of the Notch3 pathway. These results, demonstrating that the Notch pathway attenuates IL1β-mediated AC8 up-regulation in trans-differentiated VSMCs, suggest that AC8 expression, besides being induced by the proinflammatory cytokine IL1β, is also dependent on down-regulation of the Notch pathway occurring in an inflammatory context.
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12
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Guo RW, Yang LX, Li MQ, Pan XH, Liu B, Deng YL. Stim1- and Orai1-mediated store-operated calcium entry is critical for angiotensin II-induced vascular smooth muscle cell proliferation. Cardiovasc Res 2011; 93:360-70. [PMID: 22108917 DOI: 10.1093/cvr/cvr307] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
AIM Despite the fact that angiotensin (Ang) II is a critical regulator of the proliferation and migration of vascular smooth muscle cells (VSMCs), the effect of Ang II on VSMC proliferation has remained unclear. In this study, we determined whether Stim1- and Orai1-mediated store-operated calcium (Ca(2+)) entry (SOCE) plays a critical role in Ang II-induced VSMC proliferation and Ang II-accelerated neointimal growth after balloon injury of rat carotid arteries. METHODS AND RESULTS Knockdown of Stim1 and Orai1, putative calcium sensors/modulators, suppressed Ang II-mediated Ca(2+) entry and cell proliferation in synthetic VSMCs. Stim1 and Orai1 short interfering RNAs (siRNAs) decreased neointimal growth induced by Ang II in balloon-injured rat carotid arteries. Ang II significantly increased the expression of Stim1 and Orai1 in neointima. In addition, our results showed that receptor subtype-1 (AT1) significantly contributed to Ang II-induced Ca(2+) entry and proliferation of synthetic VSMCs. However, we found that transient receptor potential canonical 1 (Trpc1) had no effect on Ang II-induced SOCE or cell proliferation of synthetic VSMCs. CONCLUSIONS We show for the first time that Stim1- and Orai1-mediated SOCE may be critical for Ang II-induced VSMC proliferation. This provides important information with respect to targeting cardiovascular diseases under the enhanced renin-Ang system.
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Affiliation(s)
- Rui-wei Guo
- Department of Cardiology, Kunming General Hospital of Chengdu Military Area, Yunnan 650032, China
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13
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Cecchettini A, Rocchiccioli S, Boccardi C, Citti L. Vascular smooth-muscle-cell activation: proteomics point of view. INTERNATIONAL REVIEW OF CELL AND MOLECULAR BIOLOGY 2011; 288:43-99. [PMID: 21482410 DOI: 10.1016/b978-0-12-386041-5.00002-9] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Vascular smooth-muscle cells (VSMCs) are the main component of the artery medial layer. Thanks to their great plasticity, when stimulated by external inputs, VSMCs react by changing morphology and functions and activating new signaling pathways while switching others off. In this way, they are able to increase the cell proliferation, migration, and synthetic capacity significantly in response to vascular injury assuming a more dedifferentiated state. In different states of differentiation, VSMCs are characterized by various repertories of activated pathways and differentially expressed proteins. In this context, great interest is addressed to proteomics technology, in particular to differential proteomics. In recent years, many authors have investigated proteomics in order to identify the molecular factors putatively involved in VSMC phenotypic modulation, focusing on metabolic networks linking the differentially expressed proteins. Some of the identified proteins may be markers of pathology and become useful tools of diagnosis. These proteins could also represent appropriately validated targets and be useful either for prevention, if related to early events of atherosclerosis, or for treatment, if specific of the acute, mid, and late phases of the pathology. RNA-dependent gene silencing, obtained against the putative targets with high selective and specific molecular tools, might be able to reverse a pathological drift and be suitable candidates for innovative therapeutic approaches.
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14
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SERCA2a controls the mode of agonist-induced intracellular Ca2+ signal, transcription factor NFAT and proliferation in human vascular smooth muscle cells. J Mol Cell Cardiol 2010; 50:621-33. [PMID: 21195084 DOI: 10.1016/j.yjmcc.2010.12.016] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/19/2010] [Revised: 11/23/2010] [Accepted: 12/21/2010] [Indexed: 01/05/2023]
Abstract
In blood vessels, tone is maintained by agonist-induced cytosolic Ca(2+) oscillations of quiescent/contractile vascular smooth muscle cells (VSMCs). However, in synthetic/proliferative VSMCs, Gq/phosphoinositide receptor-coupled agonists trigger a steady-state increase in cytosolic Ca(2+) followed by a Store Operated Calcium Entry (SOCE) which translates into activation of the proliferation-associated transcription factor NFAT. Here, we report that in human coronary artery smooth muscle cells (hCASMCs), the sarco/endoplasmic reticulum calcium ATPase type 2a (SERCA2a) expressed in the contractile form of the hCASMCs, controls the nature of the agonist-induced Ca(2+) transient and the resulting down-stream signaling pathway. Indeed, restoring SERCA2a expression by gene transfer in synthetic hCASMCs 1) increased Ca(2+) storage capacity; 2) modified agonist-induced IP(3)R Ca(2+) release from steady-state to oscillatory mode (the frequency of agonist-induced IP(3)R Ca(2+) signal was 11.66 ± 1.40/100 s in SERCA2a-expressing cells (n=39) vs 1.37 ± 0.20/100 s in control cells (n=45), p<0.01); 3) suppressed SOCE by preventing interactions between SR calcium sensor STIM1 and pore forming unit ORAI1; 4) inhibited calcium regulated transcription factor NFAT and its down-stream physiological function such as proliferation and migration. This study provides evidence for the first time that oscillatory and steady-state patterns of Ca(2+) transients have different effects on calcium-dependent physiological functions in smooth muscle cells.
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