1
|
Redgrave RE, Dookun E, Booth LK, Camacho Encina M, Folaranmi O, Tual-Chalot S, Gill JH, Owens WA, Spyridopoulos I, Passos JF, Richardson GD. Author Correction: Senescent cardiomyocytes contribute to cardiac dysfunction following myocardial infarction. NPJ Aging 2023; 9:16. [PMID: 37353486 DOI: 10.1038/s41514-023-00115-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/25/2023]
Affiliation(s)
- Rachael E Redgrave
- Vascular Medicine and Biology Medicine Theme, Biosciences Institute, Newcastle University, Newcastle upon Tyne, UK
| | - Emily Dookun
- Vascular Medicine and Biology Medicine Theme, Biosciences Institute, Newcastle University, Newcastle upon Tyne, UK
| | - Laura K Booth
- Vascular Medicine and Biology Medicine Theme, Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, UK
| | - Maria Camacho Encina
- Vascular Medicine and Biology Medicine Theme, Biosciences Institute, Newcastle University, Newcastle upon Tyne, UK
| | - Omowumi Folaranmi
- Vascular Medicine and Biology Medicine Theme, Biosciences Institute, Newcastle University, Newcastle upon Tyne, UK
| | - Simon Tual-Chalot
- Vascular Medicine and Biology Medicine Theme, Biosciences Institute, Newcastle University, Newcastle upon Tyne, UK
| | - Jason H Gill
- Vascular Medicine and Biology Medicine Theme, Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, UK
| | - W Andrew Owens
- Vascular Medicine and Biology Medicine Theme, Biosciences Institute, Newcastle University, Newcastle upon Tyne, UK
| | - Ioakim Spyridopoulos
- Vascular Medicine and Biology Medicine Theme, Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, UK
| | - João F Passos
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN, USA
- Robert and Arlene Kogod Center on Aging, Mayo Clinic, Rochester, MN, 55905, USA
| | - Gavin D Richardson
- Vascular Medicine and Biology Medicine Theme, Biosciences Institute, Newcastle University, Newcastle upon Tyne, UK.
| |
Collapse
|
2
|
Redgrave RE, Dookun E, Booth LK, Camacho Encina M, Folaranmi O, Tual-Chalot S, Gill JH, Owens WA, Spyridopoulos I, Passos JF, Richardson GD. Senescent cardiomyocytes contribute to cardiac dysfunction following myocardial infarction. NPJ Aging 2023; 9:15. [PMID: 37316516 PMCID: PMC10267185 DOI: 10.1038/s41514-023-00113-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Accepted: 06/01/2023] [Indexed: 06/16/2023]
Abstract
Myocardial infarction is a leading cause of morbidity and mortality. While reperfusion is now standard therapy, pathological remodelling leading to heart failure remains a clinical problem. Cellular senescence has been shown to contribute to disease pathophysiology and treatment with the senolytic navitoclax attenuates inflammation, reduces adverse myocardial remodelling and results in improved functional recovery. However, it remains unclear which senescent cell populations contribute to these processes. To identify whether senescent cardiomyocytes contribute to disease pathophysiology post-myocardial infarction, we established a transgenic model in which p16 (CDKN2A) expression was specifically knocked-out in the cardiomyocyte population. Following myocardial infarction, mice lacking cardiomyocyte p16 expression demonstrated no difference in cardiomyocyte hypertrophy but exhibited improved cardiac function and significantly reduced scar size in comparison to control animals. This data demonstrates that senescent cardiomyocytes participate in pathological myocardial remodelling. Importantly, inhibition of cardiomyocyte senescence led to reduced senescence-associated inflammation and decreased senescence-associated markers within other myocardial lineages, consistent with the hypothesis that cardiomyocytes promote pathological remodelling by spreading senescence to other cell-types. Collectively this study presents the demonstration that senescent cardiomyocytes are major contributors to myocardial remodelling and dysfunction following a myocardial infarction. Therefore, to maximise the potential for clinical translation, it is important to further understand the mechanisms underlying cardiomyocyte senescence and how to optimise senolytic strategies to target this cell lineage.
Collapse
Affiliation(s)
- Rachael E Redgrave
- Vascular Medicine and Biology Medicine Theme, Biosciences Institute, Newcastle University, Newcastle upon Tyne, UK
| | - Emily Dookun
- Vascular Medicine and Biology Medicine Theme, Biosciences Institute, Newcastle University, Newcastle upon Tyne, UK
| | - Laura K Booth
- Vascular Medicine and Biology Medicine Theme, Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, UK
| | - Maria Camacho Encina
- Vascular Medicine and Biology Medicine Theme, Biosciences Institute, Newcastle University, Newcastle upon Tyne, UK
| | - Omowumi Folaranmi
- Vascular Medicine and Biology Medicine Theme, Biosciences Institute, Newcastle University, Newcastle upon Tyne, UK
| | - Simon Tual-Chalot
- Vascular Medicine and Biology Medicine Theme, Biosciences Institute, Newcastle University, Newcastle upon Tyne, UK
| | - Jason H Gill
- Vascular Medicine and Biology Medicine Theme, Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, UK
| | - W Andrew Owens
- Vascular Medicine and Biology Medicine Theme, Biosciences Institute, Newcastle University, Newcastle upon Tyne, UK
| | - Ioakim Spyridopoulos
- Vascular Medicine and Biology Medicine Theme, Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, UK
| | - João F Passos
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN, USA
- Robert and Arlene Kogod Center on Aging, Mayo Clinic, Rochester, MN, 55905, USA
| | - Gavin D Richardson
- Vascular Medicine and Biology Medicine Theme, Biosciences Institute, Newcastle University, Newcastle upon Tyne, UK.
| |
Collapse
|
3
|
Redgrave R, Dookun E, Booth L, Folaranm O, Tual-Chalot S, Gill J, Owens A, Spyridopoulos I, Passos J, Richardson G. Senescent cardiomyocytes contribute to cardiac dysfunction following myocardial infarction. Res Sq 2023:rs.3.rs-2776501. [PMID: 37090497 PMCID: PMC10120762 DOI: 10.21203/rs.3.rs-2776501/v1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/25/2023]
Abstract
Myocardial infarction is a leading cause of morbidity and mortality. While reperfusion is now standard therapy, pathological remodeling leading to heart failure remains a clinical problem. Cellular senescence has been shown to contribute to disease pathophysiology and treatment with the senolytic navitoclax attenuates inflammation, reduces adverse myocardial remodeling and results in improved functional recovery. However, it remains unclear which senescent cell populations contribute to these processes. To identify whether senescent cardiomyocytes contribute to disease pathophysiology post-myocardial infarction, we established a transgenic model in which p16 (CDKN2A) expression was specifically knocked-out in the cardiomyocyte population. Following myocardial infarction, mice lacking cardiomyocyte p16 expression demonstrated no difference in cardiomyocyte hypertrophy but exhibited improved cardiac function and significantly reduced scar size in comparison to control animals. This data demonstrates that senescent cardiomyocytes participate in pathological myocardial remodeling. Importantly, inhibition of cardiomyocyte senescence led to reduced senescence-associated inflammation and decreased senescence-associated markers within other myocardial lineages, consistent with the hypothesis that cardiomyocytes promote pathological remodeling by spreading senescence to other cell-types. Collectively this study presents a novel demonstration that senescent cardiomyocytes are major contributors to myocardial remodeling and dysfunction following a myocardial infarction. Therefore, to maximize the potential for clinical translation, it is important to further understand the mechanisms underlying cardiomyocyte senescence and how to optimize senolytic strategies to target this cell lineage.
Collapse
|
4
|
Dookun E, Walaszczyk A, Redgrave R, Palmowski P, Tual‐Chalot S, Suwana A, Chapman J, Jirkovsky E, Donastorg Sosa L, Gill E, Yausep OE, Santin Y, Mialet‐Perez J, Andrew Owens W, Grieve D, Spyridopoulos I, Taggart M, Arthur HM, Passos JF, Richardson GD. Clearance of senescent cells during cardiac ischemia-reperfusion injury improves recovery. Aging Cell 2020; 19:e13249. [PMID: 32996233 PMCID: PMC7576252 DOI: 10.1111/acel.13249] [Citation(s) in RCA: 71] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Revised: 09/02/2020] [Accepted: 09/13/2020] [Indexed: 12/16/2022] Open
Abstract
A key component of cardiac ischemia-reperfusion injury (IRI) is the increased generation of reactive oxygen species, leading to enhanced inflammation and tissue dysfunction in patients following intervention for myocardial infarction. In this study, we hypothesized that oxidative stress, due to ischemia-reperfusion, induces senescence which contributes to the pathophysiology of cardiac IRI. We demonstrate that IRI induces cellular senescence in both cardiomyocytes and interstitial cell populations and treatment with the senolytic drug navitoclax after ischemia-reperfusion improves left ventricular function, increases myocardial vascularization, and decreases scar size. SWATH-MS-based proteomics revealed that biological processes associated with fibrosis and inflammation that were increased following ischemia-reperfusion were attenuated upon senescent cell clearance. Furthermore, navitoclax treatment reduced the expression of pro-inflammatory, profibrotic, and anti-angiogenic cytokines, including interferon gamma-induced protein-10, TGF-β3, interleukin-11, interleukin-16, and fractalkine. Our study provides proof-of-concept evidence that cellular senescence contributes to impaired heart function and adverse remodeling following cardiac ischemia-reperfusion. We also establish that post-IRI the SASP plays a considerable role in the inflammatory response. Subsequently, senolytic treatment, at a clinically feasible time-point, attenuates multiple components of this response and improves clinically important parameters. Thus, cellular senescence represents a potential novel therapeutic avenue to improve patient outcomes following cardiac ischemia-reperfusion.
Collapse
Affiliation(s)
- Emily Dookun
- Biosciences InstituteNewcastle UniversityNewcastle upon TyneUK
| | - Anna Walaszczyk
- Biosciences InstituteNewcastle UniversityNewcastle upon TyneUK
| | | | - Pawel Palmowski
- School of Environmental SciencesFaculty of ScienceAgriculture & EngineeringNewcastle UniversityNewcastle upon TyneUK
| | | | - Averina Suwana
- Biosciences InstituteNewcastle UniversityNewcastle upon TyneUK
| | - James Chapman
- Biosciences InstituteNewcastle UniversityNewcastle upon TyneUK
| | | | | | - Eleanor Gill
- School of MedicineDentistry and Biomedical SciencesCentre for Experimental MedicineInstitute for Health SciencesQueen`s University BelfastBelfastUK
| | - Oliver E Yausep
- Biosciences InstituteNewcastle UniversityNewcastle upon TyneUK
| | | | | | - W Andrew Owens
- Biosciences InstituteNewcastle UniversityNewcastle upon TyneUK
| | - David Grieve
- School of MedicineDentistry and Biomedical SciencesCentre for Experimental MedicineInstitute for Health SciencesQueen`s University BelfastBelfastUK
| | | | - Michael Taggart
- Biosciences InstituteNewcastle UniversityNewcastle upon TyneUK
| | - Helen M. Arthur
- Biosciences InstituteNewcastle UniversityNewcastle upon TyneUK
| | - João F. Passos
- Department of Physiology and Biomedical EngineeringMayo ClinicRochesterMNUSA
| | | |
Collapse
|
5
|
Abstract
Ageing is the biggest risk factor for impaired cardiovascular health, with cardiovascular disease being the leading cause of death in 40% of individuals over 65 years old. Ageing is associated with both an increased prevalence of cardiovascular disease including heart failure, coronary artery disease, and myocardial infarction. Furthermore, ageing is associated with a poorer prognosis to these diseases. Genetic models allowing the elimination of senescent cells revealed that an accumulation of senescence contributes to the pathophysiology of cardiovascular ageing and promotes the progression of cardiovascular disease through the expression of a proinflammatory and profibrotic senescence-associated secretory phenotype. These studies have resulted in an effort to identify pharmacological therapeutics that enable the specific elimination of senescent cells through apoptosis induction. These senescent cell apoptosis-inducing compounds are termed senolytics and their potential to ameliorate age-associated cardiovascular disease is the focus of this review.
Collapse
Affiliation(s)
- Emily Dookun
- Biosciences Institute, Newcastle University, Newcastle upon Tyne, NE1 3BZ, UK
| | - João F Passos
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN, USA
| | - Helen M Arthur
- Biosciences Institute, Newcastle University, Newcastle upon Tyne, NE1 3BZ, UK
| | - Gavin D Richardson
- Biosciences Institute, Newcastle University, Newcastle upon Tyne, NE1 3BZ, UK.
| |
Collapse
|
6
|
Walaszczyk A, Dookun E, Redgrave R, Tual‐Chalot S, Victorelli S, Spyridopoulos I, Owens A, Arthur HM, Passos JF, Richardson GD. Pharmacological clearance of senescent cells improves survival and recovery in aged mice following acute myocardial infarction. Aging Cell 2019; 18:e12945. [PMID: 30920115 PMCID: PMC6516151 DOI: 10.1111/acel.12945] [Citation(s) in RCA: 135] [Impact Index Per Article: 27.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2019] [Revised: 02/13/2019] [Accepted: 02/16/2019] [Indexed: 12/15/2022] Open
Abstract
Cardiovascular disease is the leading cause of death in individuals over 60 years old. Aging is associated with an increased prevalence of coronary artery disease and a poorer prognosis following acute myocardial infarction (MI). With age, senescent cells accumulate in tissues, including the heart, and contribute to age‐related pathologies. However, the role of senescence in recovery following MI has not been investigated. In this study, we demonstrate that treatment of aged mice with the senolytic drug, navitoclax, eliminates senescent cardiomyocytes and attenuates profibrotic protein expression in aged mice. Importantly, clearance of senescent cells improved myocardial remodelling and diastolic function as well as overall survival following MI. These data provide proof‐of‐concept evidence that senescent cells are major contributors to impaired function and increased mortality following MI and that senolytics are a potential new therapeutic avenue for MI.
Collapse
Affiliation(s)
- Anna Walaszczyk
- Cardiovascular Research Centre, Institute of Genetic Medicine Newcastle University Newcastle upon Tyne UK
| | - Emily Dookun
- Cardiovascular Research Centre, Institute of Genetic Medicine Newcastle University Newcastle upon Tyne UK
| | - Rachael Redgrave
- Cardiovascular Research Centre, Institute of Genetic Medicine Newcastle University Newcastle upon Tyne UK
| | - Simon Tual‐Chalot
- Cardiovascular Research Centre, Institute of Genetic Medicine Newcastle University Newcastle upon Tyne UK
| | - Stella Victorelli
- Institute for Cell and Molecular Biosciences Newcastle University Newcastle upon Tyne UK
- Department of Physiology and Biomedical Engineering Mayo Clinic Rochester Minnesota
| | - Ioakim Spyridopoulos
- Cardiovascular Research Centre, Institute of Genetic Medicine Newcastle University Newcastle upon Tyne UK
| | - Andrew Owens
- Cardiovascular Research Centre, Institute of Genetic Medicine Newcastle University Newcastle upon Tyne UK
| | - Helen M. Arthur
- Cardiovascular Research Centre, Institute of Genetic Medicine Newcastle University Newcastle upon Tyne UK
| | - João F. Passos
- Institute for Cell and Molecular Biosciences Newcastle University Newcastle upon Tyne UK
- Department of Physiology and Biomedical Engineering Mayo Clinic Rochester Minnesota
| | - Gavin D. Richardson
- Cardiovascular Research Centre, Institute of Genetic Medicine Newcastle University Newcastle upon Tyne UK
| |
Collapse
|
7
|
Anderson R, Lagnado A, Maggiorani D, Walaszczyk A, Dookun E, Chapman J, Birch J, Salmonowicz H, Ogrodnik M, Jurk D, Proctor C, Correia-Melo C, Victorelli S, Fielder E, Berlinguer-Palmini R, Owens A, Greaves LC, Kolsky KL, Parini A, Douin-Echinard V, LeBrasseur NK, Arthur HM, Tual-Chalot S, Schafer MJ, Roos CM, Miller JD, Robertson N, Mann J, Adams PD, Tchkonia T, Kirkland JL, Mialet-Perez J, Richardson GD, Passos JF. Length-independent telomere damage drives post-mitotic cardiomyocyte senescence. EMBO J 2019; 38:embj.2018100492. [PMID: 30737259 PMCID: PMC6396144 DOI: 10.15252/embj.2018100492] [Citation(s) in RCA: 265] [Impact Index Per Article: 53.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2018] [Revised: 12/18/2018] [Accepted: 01/02/2019] [Indexed: 01/08/2023] Open
Abstract
Ageing is the biggest risk factor for cardiovascular disease. Cellular senescence, a process driven in part by telomere shortening, has been implicated in age‐related tissue dysfunction. Here, we address the question of how senescence is induced in rarely dividing/post‐mitotic cardiomyocytes and investigate whether clearance of senescent cells attenuates age‐related cardiac dysfunction. During ageing, human and murine cardiomyocytes acquire a senescent‐like phenotype characterised by persistent DNA damage at telomere regions that can be driven by mitochondrial dysfunction and crucially can occur independently of cell division and telomere length. Length‐independent telomere damage in cardiomyocytes activates the classical senescence‐inducing pathways, p21CIP and p16INK4a, and results in a non‐canonical senescence‐associated secretory phenotype, which is pro‐fibrotic and pro‐hypertrophic. Pharmacological or genetic clearance of senescent cells in mice alleviates detrimental features of cardiac ageing, including myocardial hypertrophy and fibrosis. Our data describe a mechanism by which senescence can occur and contribute to age‐related myocardial dysfunction and in the wider setting to ageing in post‐mitotic tissues.
Collapse
Affiliation(s)
- Rhys Anderson
- Ageing Research Laboratories, Institute for Ageing, Newcastle University, Newcastle upon Tyne, UK.,Institute for Cell and Molecular Biosciences, Newcastle University, Newcastle upon Tyne, UK
| | - Anthony Lagnado
- Ageing Research Laboratories, Institute for Ageing, Newcastle University, Newcastle upon Tyne, UK.,Institute for Cell and Molecular Biosciences, Newcastle University, Newcastle upon Tyne, UK
| | - Damien Maggiorani
- INSERM Institute of metabolic and cardiovascular diseases, University of Toulouse, Toulouse, France
| | - Anna Walaszczyk
- Cardiovascular Research Centre, Institute for Genetic Medicine, Newcastle University, Newcastle upon Tyne, UK
| | - Emily Dookun
- Institute for Cell and Molecular Biosciences, Newcastle University, Newcastle upon Tyne, UK.,Cardiovascular Research Centre, Institute for Genetic Medicine, Newcastle University, Newcastle upon Tyne, UK
| | - James Chapman
- Ageing Research Laboratories, Institute for Ageing, Newcastle University, Newcastle upon Tyne, UK.,Institute for Cell and Molecular Biosciences, Newcastle University, Newcastle upon Tyne, UK
| | - Jodie Birch
- Ageing Research Laboratories, Institute for Ageing, Newcastle University, Newcastle upon Tyne, UK.,Institute for Cell and Molecular Biosciences, Newcastle University, Newcastle upon Tyne, UK
| | - Hanna Salmonowicz
- Ageing Research Laboratories, Institute for Ageing, Newcastle University, Newcastle upon Tyne, UK.,Institute for Cell and Molecular Biosciences, Newcastle University, Newcastle upon Tyne, UK
| | - Mikolaj Ogrodnik
- Ageing Research Laboratories, Institute for Ageing, Newcastle University, Newcastle upon Tyne, UK.,Institute for Cell and Molecular Biosciences, Newcastle University, Newcastle upon Tyne, UK
| | - Diana Jurk
- Ageing Research Laboratories, Institute for Ageing, Newcastle University, Newcastle upon Tyne, UK.,Institute for Cell and Molecular Biosciences, Newcastle University, Newcastle upon Tyne, UK.,Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN, USA
| | - Carole Proctor
- Ageing Research Laboratories, Institute for Ageing, Newcastle University, Newcastle upon Tyne, UK.,Institute for Cell and Molecular Biosciences, Newcastle University, Newcastle upon Tyne, UK
| | - Clara Correia-Melo
- Ageing Research Laboratories, Institute for Ageing, Newcastle University, Newcastle upon Tyne, UK.,Institute for Cell and Molecular Biosciences, Newcastle University, Newcastle upon Tyne, UK
| | - Stella Victorelli
- Ageing Research Laboratories, Institute for Ageing, Newcastle University, Newcastle upon Tyne, UK.,Institute for Cell and Molecular Biosciences, Newcastle University, Newcastle upon Tyne, UK
| | - Edward Fielder
- Ageing Research Laboratories, Institute for Ageing, Newcastle University, Newcastle upon Tyne, UK.,Institute for Cell and Molecular Biosciences, Newcastle University, Newcastle upon Tyne, UK
| | | | - Andrew Owens
- Cardiovascular Research Centre, Institute for Genetic Medicine, Newcastle University, Newcastle upon Tyne, UK
| | - Laura C Greaves
- Wellcome Trust Centre for Mitochondrial Research, Centre for Ageing and Vitality, Newcastle University, Newcastle upon Tyne, UK
| | - Kathy L Kolsky
- Robert and Arlene Kogod Center on Aging, Mayo Clinic, Rochester, MN, USA
| | - Angelo Parini
- INSERM Institute of metabolic and cardiovascular diseases, University of Toulouse, Toulouse, France
| | - Victorine Douin-Echinard
- INSERM Institute of metabolic and cardiovascular diseases, University of Toulouse, Toulouse, France
| | | | - Helen M Arthur
- Cardiovascular Research Centre, Institute for Genetic Medicine, Newcastle University, Newcastle upon Tyne, UK
| | - Simon Tual-Chalot
- Cardiovascular Research Centre, Institute for Genetic Medicine, Newcastle University, Newcastle upon Tyne, UK
| | - Marissa J Schafer
- Robert and Arlene Kogod Center on Aging, Mayo Clinic, Rochester, MN, USA
| | - Carolyn M Roos
- Robert and Arlene Kogod Center on Aging, Mayo Clinic, Rochester, MN, USA
| | - Jordan D Miller
- Robert and Arlene Kogod Center on Aging, Mayo Clinic, Rochester, MN, USA
| | - Neil Robertson
- Institute of Cancer Sciences, CR-UK Beatson Institute, University of Glasgow, Glasgow, UK
| | - Jelena Mann
- Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne, UK
| | - Peter D Adams
- Institute of Cancer Sciences, CR-UK Beatson Institute, University of Glasgow, Glasgow, UK.,Sanford Burnham Prebys Medical Discovery Institute, La Jolla, CA, USA
| | - Tamara Tchkonia
- Robert and Arlene Kogod Center on Aging, Mayo Clinic, Rochester, MN, USA
| | - James L Kirkland
- Robert and Arlene Kogod Center on Aging, Mayo Clinic, Rochester, MN, USA
| | - Jeanne Mialet-Perez
- INSERM Institute of metabolic and cardiovascular diseases, University of Toulouse, Toulouse, France
| | - Gavin D Richardson
- Cardiovascular Research Centre, Institute for Genetic Medicine, Newcastle University, Newcastle upon Tyne, UK
| | - João F Passos
- Ageing Research Laboratories, Institute for Ageing, Newcastle University, Newcastle upon Tyne, UK .,Institute for Cell and Molecular Biosciences, Newcastle University, Newcastle upon Tyne, UK.,Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN, USA
| |
Collapse
|
8
|
Jones R, Krishnan A, Zeybel GL, Dookun E, Pearson JP, Simpson AJ, Griffin SM, Ward C, Forrest IA. Reflux in idiopathic pulmonary fibrosis: treatment informed by an integrated approach. ERJ Open Res 2018; 4:00051-2018. [PMID: 30406124 PMCID: PMC6215913 DOI: 10.1183/23120541.00051-2018] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2018] [Accepted: 09/11/2018] [Indexed: 12/02/2022] Open
Abstract
Despite recent therapeutic advances, the prognosis for patients with idiopathic pulmonary fibrosis (IPF) remains poor. The link with gastro-oesophageal reflux disease (GORD) has been identified as a research priority, as GORD appears to be common in IPF and may be associated with adverse outcomes [1]. GORD is often clinically silent in IPF, so detection is challenging [2]. After MDT work-up and review, gastro-oesophageal reflux and pulmonary aspiration were found to be common in IPF patients; surgery was recommended in only 10%http://ow.ly/rO3T30lU17o
Collapse
Affiliation(s)
- Rhys Jones
- Northern Oesophago-Gastric Unit, Royal Victoria Infirmary, Newcastle-upon-Tyne, UK.,Joint first authors
| | - Amaran Krishnan
- Northern Oesophago-Gastric Unit, Royal Victoria Infirmary, Newcastle-upon-Tyne, UK.,Joint first authors
| | - Gemma L Zeybel
- Institute of Cell and Molecular Biosciences, The Medical School, Newcastle University, Newcastle-upon-Tyne, UK
| | - Emily Dookun
- Institute of Cell and Molecular Biosciences, The Medical School, Newcastle University, Newcastle-upon-Tyne, UK
| | - Jeffrey P Pearson
- Institute of Cell and Molecular Biosciences, The Medical School, Newcastle University, Newcastle-upon-Tyne, UK
| | - A John Simpson
- Institute of Cellular Medicine, The Medical School, Newcastle University, Newcastle-upon-Tyne, UK
| | - S Michael Griffin
- Northern Oesophago-Gastric Unit, Royal Victoria Infirmary, Newcastle-upon-Tyne, UK
| | - Chris Ward
- Institute of Cell and Molecular Biosciences, The Medical School, Newcastle University, Newcastle-upon-Tyne, UK.,Institute of Cellular Medicine, The Medical School, Newcastle University, Newcastle-upon-Tyne, UK.,Joint senior authors
| | - Ian A Forrest
- Dept of Respiratory Medicine, Royal Victoria Infirmary, Newcastle-upon-Tyne, UK.,Joint senior authors
| |
Collapse
|
9
|
Richardson GD, Sage A, Bennaceur K, Al Zhrany N, Coelho-Lima J, Dookun E, Draganova L, Saretzki G, Breault DT, Mallat Z, Spyridopoulos I. Telomerase Mediates Lymphocyte Proliferation but Not the Atherosclerosis-Suppressive Potential of Regulatory T-Cells. Arterioscler Thromb Vasc Biol 2018; 38:1283-1296. [PMID: 29599138 PMCID: PMC5965929 DOI: 10.1161/atvbaha.117.309940] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2017] [Accepted: 03/05/2018] [Indexed: 01/05/2023]
Abstract
Supplemental Digital Content is available in the text. Objective— Atherosclerosis is an age-related disease characterized by systemic oxidative stress and low-grade inflammation. The role of telomerase and telomere length in atherogenesis remains contentious. Short telomeres of peripheral leukocytes are predictive for coronary artery disease. Conversely, attenuated telomerase has been demonstrated to be protective for atherosclerosis. Hence, a potential causative role of telomerase in atherogenesis is critically debated. Approach and Results— In this study, we used multiple mouse models to investigate the regulation of telomerase under oxidative stress as well as its impact on atherogenesis in vitro and in vivo. Using primary lymphocytes and myeloid cell cultures, we demonstrate that cultivation under hyperoxic conditions induced oxidative stress resulting in chronic activation of CD4+ cells and significantly reduced CD4+ T-cell proliferation. The latter was telomerase dependent because oxidative stress had no effect on the proliferation of primary lymphocytes isolated from telomerase knockout mice. In contrast, myeloid cell proliferation was unaffected by oxidative stress nor reliant on telomerase. Telomerase reverse transcriptase deficiency had no effect on regulatory T-cell (Treg) numbers in vivo or suppressive function ex vivo. Adoptive transfer of telomerase reverse transcriptase–/– Tregs into Rag2–/– ApoE–/– (recombination activating gene 2/apolipoprotein E) double knockout mice demonstrated that telomerase function was not required for the ability of Tregs to protect against atherosclerosis. However, telomere length was critical for Treg function. Conclusions— Telomerase contributes to lymphocyte proliferation but plays no major role in Treg function, provided that telomere length is not critically short. We suggest that oxidative stress may contribute to atherosclerosis via suppression of telomerase and acceleration of telomere attrition in Tregs.
Collapse
Affiliation(s)
- Gavin David Richardson
- From the Cardiovascular Research Centre, Institute of Genetic Medicine, International Centre for Life (G.D.R., K.B., N.A.Z., J.C.-L., E.D., L.D., I.S.)
| | - Andrew Sage
- Division of Cardiovascular Medicine, Department of Medicine, University of Cambridge, United Kingdom (A.S., Z.M.)
| | - Karim Bennaceur
- From the Cardiovascular Research Centre, Institute of Genetic Medicine, International Centre for Life (G.D.R., K.B., N.A.Z., J.C.-L., E.D., L.D., I.S.)
| | - Nayef Al Zhrany
- From the Cardiovascular Research Centre, Institute of Genetic Medicine, International Centre for Life (G.D.R., K.B., N.A.Z., J.C.-L., E.D., L.D., I.S.)
| | - Jose Coelho-Lima
- From the Cardiovascular Research Centre, Institute of Genetic Medicine, International Centre for Life (G.D.R., K.B., N.A.Z., J.C.-L., E.D., L.D., I.S.)
| | - Emily Dookun
- From the Cardiovascular Research Centre, Institute of Genetic Medicine, International Centre for Life (G.D.R., K.B., N.A.Z., J.C.-L., E.D., L.D., I.S.)
| | - Lilia Draganova
- From the Cardiovascular Research Centre, Institute of Genetic Medicine, International Centre for Life (G.D.R., K.B., N.A.Z., J.C.-L., E.D., L.D., I.S.)
| | - Gabriele Saretzki
- Institute for Cell and Molecular Biosciences, The Ageing Biology Centre, Newcastle University Institute for Ageing, Campus for Ageing and Vitality (G.S.), Newcastle University, Newcastle upon Tyne, United Kingdom
| | - David T Breault
- Division of Endocrinology, Boston Children's Hospital, Harvard Medical School, MA (D.T.B.).,Harvard Stem Cell Institute, Cambridge, MA (D.T.B.)
| | - Ziad Mallat
- Division of Cardiovascular Medicine, Department of Medicine, University of Cambridge, United Kingdom (A.S., Z.M.).,INSERM U970, Paris Cardiovascular Research Center, France (Z.M.).,Université Paris Descartes, Sorbonne Paris Cité, France (Z.M.)
| | - Ioakim Spyridopoulos
- From the Cardiovascular Research Centre, Institute of Genetic Medicine, International Centre for Life (G.D.R., K.B., N.A.Z., J.C.-L., E.D., L.D., I.S.)
| |
Collapse
|