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Riviere-Cazaux C, Carlstrom LP, Neth BJ, Olson IE, Rajani K, Rahman M, Ikram S, Mansour MA, Mukherjee B, Warrington AE, Short SC, von Zglinicki T, Brown DA, Burma S, Tchkonia T, Schafer MJ, Baker DJ, Kizilbash SH, Kirkland JL, Burns TC. An untapped window of opportunity for glioma: targeting therapy-induced senescence prior to recurrence. NPJ Precis Oncol 2023; 7:126. [PMID: 38030881 PMCID: PMC10687268 DOI: 10.1038/s41698-023-00476-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2023] [Accepted: 10/24/2023] [Indexed: 12/01/2023] Open
Abstract
High-grade gliomas are primary brain tumors that are incredibly refractory long-term to surgery and chemoradiation, with no proven durable salvage therapies for patients that have failed conventional treatments. Post-treatment, the latent glioma and its microenvironment are characterized by a senescent-like state of mitotic arrest and a senescence-associated secretory phenotype (SASP) induced by prior chemoradiation. Although senescence was once thought to be irreversible, recent evidence has demonstrated that cells may escape this state and re-enter the cell cycle, contributing to tumor recurrence. Moreover, senescent tumor cells could spur the growth of their non-senescent counterparts, thereby accelerating recurrence. In this review, we highlight emerging evidence supporting the use of senolytic agents to ablate latent, senescent-like cells that could contribute to tumor recurrence. We also discuss how senescent cell clearance can decrease the SASP within the tumor microenvironment thereby reducing tumor aggressiveness at recurrence. Finally, senolytics could improve the long-term sequelae of prior therapy on cognition and bone marrow function. We critically review the senolytic drugs currently under preclinical and clinical investigation and the potential challenges that may be associated with deploying senolytics against latent glioma. In conclusion, senescence in glioma and the microenvironment are critical and potential targets for delaying or preventing tumor recurrence and improving patient functional outcomes through senotherapeutics.
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Affiliation(s)
| | | | | | - Ian E Olson
- Department of Neurological Surgery, Northwestern University, Chicago, IL, USA
| | | | - Masum Rahman
- Department of Neurological Surgery, Rochester, MN, USA
| | - Samar Ikram
- Department of Neurological Surgery, Rochester, MN, USA
| | | | - Bipasha Mukherjee
- Department of Neurosurgery, University of Texas Health Science Center at San Antonio, San Antonio, TX, USA
| | - Arthur E Warrington
- Department of Neurological Surgery, Rochester, MN, USA
- Department of Neurology, Rochester, MN, USA
| | - Susan C Short
- Leeds Institute of Medical Research at St. James's, St. James's University Hospital, University of Leeds, Leeds, UK
| | - Thomas von Zglinicki
- Biosciences Institute, Faculty of Medical Sciences, Campus for Ageing and Vitality, Newcastle University, Newcastle upon Tyne, UK
| | - Desmond A Brown
- National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, USA
| | - Sandeep Burma
- Department of Neurosurgery, University of Texas Health Science Center at San Antonio, San Antonio, TX, USA
| | - Tamar Tchkonia
- Department of Physiology and Biomedical Engineering, Rochester, MN, USA
| | - Marissa J Schafer
- Department of Physiology and Biomedical Engineering, Rochester, MN, USA
| | - Darren J Baker
- Department of Pediatric and Adolescent Medicine, Rochester, MN, USA
- Department of Biochemistry and Molecular Biology, Rochester, MN, USA
| | | | - James L Kirkland
- Department of Pediatric and Adolescent Medicine, Rochester, MN, USA
- Department of Medicine, Rochester, MN, USA
| | - Terry C Burns
- Department of Neurological Surgery, Rochester, MN, USA.
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2
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Saavedra D, Añé-Kourí AL, Barzilai N, Caruso C, Cho KH, Fontana L, Franceschi C, Frasca D, Ledón N, Niedernhofer LJ, Pereira K, Robbins PD, Silva A, Suarez GM, Berghe WV, von Zglinicki T, Pawelec G, Lage A. Aging and chronic inflammation: highlights from a multidisciplinary workshop. Immun Ageing 2023; 20:25. [PMID: 37291596 DOI: 10.1186/s12979-023-00352-w] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2023] [Accepted: 06/06/2023] [Indexed: 06/10/2023]
Abstract
Aging is a gradual, continuous series of natural changes in biological, physiological, immunological, environmental, psychological, behavioral, and social processes. Aging entails changes in the immune system characterized by a decrease in thymic output of naïve lymphocytes, an accumulated chronic antigenic stress notably caused by chronic infections such as cytomegalovirus (CMV), and immune cell senescence with acquisition of an inflammatory senescence-associated secretory phenotype (SASP). For this reason, and due to the SASP originating from other tissues, aging is commonly accompanied by low-grade chronic inflammation, termed "inflammaging". After decades of accumulating evidence regarding age-related processes and chronic inflammation, the domain now appears mature enough to allow an integrative reinterpretation of old data. Here, we provide an overview of the topics discussed in a recent workshop "Aging and Chronic Inflammation" to which many of the major players in the field contributed. We highlight advances in systematic measurement and interpretation of biological markers of aging, as well as their implications for human health and longevity and the interventions that can be envisaged to maintain or improve immune function in older people.
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Affiliation(s)
- Danay Saavedra
- Department of Clinical Immunology, Center of Molecular Immunology, 216 St, Corner 15, PO Box 16040, Atabey, Havana, Cuba.
| | - Ana Laura Añé-Kourí
- Department of Clinical Immunology, Center of Molecular Immunology, 216 St, Corner 15, PO Box 16040, Atabey, Havana, Cuba
| | - Nir Barzilai
- Albert Einstein College of Medicine, Bronx, United States
| | - Calogero Caruso
- Laboratorio di Immunopatologia e Immunosenescenza, Dipartimento di Biomedicina, Neuroscienze e Diagnostica Avanzata, Università di Palermo, Palermo, Italy
| | - Kyung-Hyun Cho
- LipoLab, Yeungnam University, Gyeongsan, Republic of Korea
- Raydel Research Institute, Medical Innovation Complex, Seoul, Republic of Korea
| | - Luigi Fontana
- Charles Perkins Centre, The University of Sydney, Sydney, Australia
| | - Claudio Franceschi
- Institute of Biology and Biomedicine, Lobachevsky State University of Nizhny Novgorod, Nizhny Novgorod, Russian Federation
| | - Daniela Frasca
- Department of Microbiology and Immunology, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Nuris Ledón
- Department of Clinical Immunology, Center of Molecular Immunology, 216 St, Corner 15, PO Box 16040, Atabey, Havana, Cuba
| | | | - Karla Pereira
- Department of Clinical Immunology, Center of Molecular Immunology, 216 St, Corner 15, PO Box 16040, Atabey, Havana, Cuba
| | - Paul D Robbins
- University of Minnesota Medical School, Minneapolis, MN, USA
| | - Alexa Silva
- Department of Clinical Immunology, Center of Molecular Immunology, 216 St, Corner 15, PO Box 16040, Atabey, Havana, Cuba
| | - Gisela M Suarez
- Department of Clinical Immunology, Center of Molecular Immunology, 216 St, Corner 15, PO Box 16040, Atabey, Havana, Cuba
| | - Wim Vanden Berghe
- Laboratory of Protein Chemistry, Proteomics and Epigenetic Signalling (PPES), University of Antwerp, Wilrijk, 2610, Belgium
- Integrated Personalized & Precision Oncology Network (IPPON), University of Antwerp, Wilrijk, 2610, Belgium
- Department of Biomedical Sciences, University of Antwerp, Wilrijk, 2610, Belgium
| | - Thomas von Zglinicki
- Ageing Biology Laboratories, Newcastle University Biosciences Institute, Newcastle upon Tyne, UK
| | - Graham Pawelec
- Department of Immunology, University of Tübingen, Tübingen, Germany
| | - Agustín Lage
- Department of Clinical Immunology, Center of Molecular Immunology, 216 St, Corner 15, PO Box 16040, Atabey, Havana, Cuba
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3
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Muela-Zarzuela I, Suarez-Rivero JM, Gallardo-Orihuela A, Wan C, Izawa K, de Gregorio-Procopio M, Coillin I, Ryffel B, Kitaura J, Sanz A, von Zglinicki T, Mbalaviele G, Cordero MD. NLRP1 inflammasome modulates senescence and senescence-associated secretory phenotype. bioRxiv 2023:2023.02.06.527254. [PMID: 36798300 PMCID: PMC9934543 DOI: 10.1101/2023.02.06.527254] [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: 02/08/2023]
Abstract
Senescence is a cellular aging-related process triggered by different stresses and characterized by the secretion of various inflammatory factors referred to as the senescence-associated secretory phenotype (SASP). Here, we present evidence that the inflammasome sensor, NLRP1, is a key mediator of senescence induced by irradiation both in vitro and in vivo. The NLRP1 inflammasome promotes senescence by regulating the expression of p16, p21, p53, and SASP in Gasdermin D (GSDMD)-dependent manner as these responses are reduced in conditions of NLRP1 insufficiency or GSDMD inhibition. Mechanistically, the NLRP1 inflammasome is activated downstream of the cytosolic DNA sensor cGMP-AMP (cGAMP) synthase (cGAS) in response to genomic damage. These findings provide a rationale for inhibiting the NLRP1 inflammasome-GSDMD axis to treat senescence-driven disorders.
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4
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Granic A, Martin-Ruiz C, Rimmer L, Dodds RM, Robinson LA, Spyridopoulos I, Kirkwood TBL, von Zglinicki T, Sayer AA. Immunosenescence profiles of lymphocyte compartments and multiple long-term conditions (multimorbidity) in very old adults: The Newcastle 85+ Study. Mech Ageing Dev 2022; 208:111739. [PMID: 36152894 DOI: 10.1016/j.mad.2022.111739] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Revised: 07/22/2022] [Accepted: 09/18/2022] [Indexed: 12/30/2022]
Abstract
Immunosenescence, a decline in immune system function, has been linked to several age-related diseases and ageing syndromes. Very old adults (aged ≥ 85 years) live with multiple long-term conditions (MLTC, also known as multimorbidity)-a complex phenomenon of poor health defined by either counts, indices, or patterns, but little is known about the relationship between an ageing immune system and MLTC in this age group. We utilised baseline data from the Newcastle 85+ Study to investigate the associations between previously defined immunosenescence profiles of lymphocyte compartments and MLTC counts and patterns (from 16 chronic diseases/ageing syndromes). Seven hundred and three participants had MLTC and complete data for all 16 conditions, a median and mean of 5 (range 2-11) and 62.2% had ≥ 5 conditions. Three distinct MLTC patterns emerged by clustering: Cluster 1 ('Low frequency cardiometabolic-cerebrovascular diseases', n = 209), Cluster 2 ('High ageing syndromes-arthritis', n = 240), and Cluster 3 ('Hypertensive-renal impairment', n = 254). Although having a more senescent phenotype, characterised by higher frequency of CD4 and CD8 senescence-like effector memory cells and lower CD4/CD8 ratio, was not associated with MLTC compared with less senescent phenotype, the results warrant further investigation, including whether immunosenescence drives change in MLTC and influences MLTC severity in late adulthood.
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Affiliation(s)
- Antoneta Granic
- AGE Research Group, Translational and Clinical Research Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, United Kingdom; NIHR Newcastle Biomedical Research Centre, Newcastle upon Tyne Hospitals NHS Foundation Trust and Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Carmen Martin-Ruiz
- Bio Screening Core Facility, Campus for Ageing and Vitality, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Lucy Rimmer
- AGE Research Group, Translational and Clinical Research Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Richard M Dodds
- AGE Research Group, Translational and Clinical Research Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, United Kingdom; NIHR Newcastle Biomedical Research Centre, Newcastle upon Tyne Hospitals NHS Foundation Trust and Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Louise A Robinson
- Population Health Sciences Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Ioakim Spyridopoulos
- Biosciences Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Thomas B L Kirkwood
- National Innovation Centre for Ageing, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Thomas von Zglinicki
- Biosciences Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Avan A Sayer
- AGE Research Group, Translational and Clinical Research Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, United Kingdom; NIHR Newcastle Biomedical Research Centre, Newcastle upon Tyne Hospitals NHS Foundation Trust and Newcastle University, Newcastle upon Tyne, United Kingdom.
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5
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Rennie KJ, Witham M, Bradley P, Clegg A, Connolly S, Hancock HC, Hiu S, Marsay L, McDonald C, Robertson L, Simms L, Steel AJ, Steves CJ, Storey B, Wason J, Wilson N, von Zglinicki T, Sayer AAP. MET-PREVENT: metformin to improve physical performance in older people with sarcopenia and physical prefrailty/frailty - protocol for a double-blind, randomised controlled proof-of-concept trial. BMJ Open 2022; 12:e061823. [PMID: 35851031 PMCID: PMC9297211 DOI: 10.1136/bmjopen-2022-061823] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/07/2022] [Accepted: 06/19/2022] [Indexed: 11/15/2022] Open
Abstract
INTRODUCTION Skeletal muscle dysfunction is central to both sarcopenia and physical frailty, which are associated with a wide range of adverse outcomes including falls and fractures, longer hospital stays, dependency and the need for care. Resistance training may prevent and treat sarcopenia and physical frailty, but not everyone can or wants to exercise. Finding alternatives is critical to alleviate the burden of adverse outcomes associated with sarcopenia and physical frailty. This trial will provide proof-of-concept evidence as to whether metformin can improve physical performance in older people with sarcopenia and physical prefrailty or frailty. METHODS AND ANALYSIS MET-PREVENT is a parallel group, double-blind, placebo-controlled proof-of-concept trial. Trial participants can participate from their own homes, including completing informed consent and screening assessments. Eligible participants with low grip strength or prolonged sit-to-stand time together with slow walk speed will be randomised to either oral metformin hydrochloride 500 mg tablets or matched placebo, taken three times a day for 4 months. The recruitment target is 80 participants from two secondary care hospitals in Newcastle and Gateshead, UK. Local primary care practices will act as participant identification centres. Randomisation will be performed using a web-based minimisation system with a random element, balancing on sex and baseline walk speed. Participants will be followed up for 4 months post-randomisation, with outcomes collected at baseline and 4 months. The primary outcome measure is the four metre walk speed at the 4-month follow-up visit. ETHICS AND DISSEMINATION The trial has been approved by the Liverpool NHS Research Ethics Committee (20/NW/0470), the Medicines and Healthcare Regulatory Authority (EudraCT 2020-004023-16) and the UK Health Research Authority (IRAS 275219). Results will be made available to participants, their families, patients with sarcopenia, the public, regional and national clinical teams, and the international scientific community. TRIAL REGISTRATION NUMBER ISRCTN29932357.
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Affiliation(s)
- Katherine J Rennie
- Newcastle Clinical Trials Unit, Newcastle University, Newcastle upon Tyne, UK
| | - Miles Witham
- NIHR Newcastle Biomedical Research Centre, Newcastle University and Newcastle Hospitals NHS Foundation Trust, Newcastle upon Tyne, UK
| | - Penny Bradley
- Pharmacy Directorate, Newcastle Upon Tyne Hospitals NHS Trust, Newcastle Upon Tyne, UK
| | - Andrew Clegg
- Academic Unit of Elderly Care & Rehabilitation, University of Leeds, Bradford, UK
| | - Stephen Connolly
- Patient and Public Involvement Representative, Newcastle upon Tyne, UK
| | - Helen C Hancock
- Newcastle Clinical Trials Unit, Newcastle University, Newcastle upon Tyne, UK
| | - Shaun Hiu
- Population Health Sciences Institute, Newcastle University, Newcastle upon Tyne, UK
| | - Leanne Marsay
- Newcastle Clinical Trials Unit, Newcastle University, Newcastle upon Tyne, UK
| | | | - Laura Robertson
- Newcastle Clinical Trials Unit, Newcastle University, Newcastle upon Tyne, UK
| | - Laura Simms
- Newcastle Clinical Trials Unit, Newcastle University, Newcastle upon Tyne, UK
| | - Alison J Steel
- Newcastle Clinical Trials Unit, Newcastle University, Newcastle upon Tyne, UK
| | | | - Bryony Storey
- Gateshead Health NHS Foundation Trust, Gateshead, UK
| | - James Wason
- Population Health Sciences Institute, Newcastle University, Newcastle upon Tyne, UK
| | - Nina Wilson
- Population Health Sciences Institute, Newcastle University, Newcastle upon Tyne, UK
| | | | - Avan A P Sayer
- NIHR Newcastle Biomedical Research Centre, Newcastle University and Newcastle Hospitals NHS Foundation Trust, Newcastle upon Tyne, UK
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6
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Abstract
Mitochondrial dysfunction and cell senescence are hallmarks of aging and are closely interconnected. Mitochondrial dysfunction, operationally defined as a decreased respiratory capacity per mitochondrion together with a decreased mitochondrial membrane potential, typically accompanied by increased production of oxygen free radicals, is a cause and a consequence of cellular senescence and figures prominently in multiple feedback loops that induce and maintain the senescent phenotype. Here, we summarize pathways that cause mitochondrial dysfunction in senescence and aging and discuss the major consequences of mitochondrial dysfunction and how these consequences contribute to senescence and aging. We also highlight the potential of senescence-associated mitochondrial dysfunction as an antiaging and antisenescence intervention target, proposing the combination of multiple interventions converging onto mitochondrial dysfunction as novel, potent senolytics.
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Affiliation(s)
- Satomi Miwa
- Newcastle University Biosciences Institute, Ageing Biology Laboratories, Newcastle upon Tyne, United Kingdom
| | - Sonu Kashyap
- Department of Anesthesiology and Perioperative Medicine, Mayo Clinic, Jacksonville, Florida, USA.,Signal Transduction and Molecular Nutrition Laboratory, Kogod Aging Center, Department of Anesthesiology and Perioperative Medicine, Mayo Clinic College of Medicine, Rochester, Minnesota, USA
| | - Eduardo Chini
- Department of Anesthesiology and Perioperative Medicine, Mayo Clinic, Jacksonville, Florida, USA.,Signal Transduction and Molecular Nutrition Laboratory, Kogod Aging Center, Department of Anesthesiology and Perioperative Medicine, Mayo Clinic College of Medicine, Rochester, Minnesota, USA
| | - Thomas von Zglinicki
- Newcastle University Biosciences Institute, Ageing Biology Laboratories, Newcastle upon Tyne, United Kingdom
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7
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Fielder E, Wan T, Alimohammadiha G, Ishaq A, Low E, Weigand BM, Kelly G, Parker C, Griffin B, Jurk D, Korolchuk VI, von Zglinicki T, Miwa S. Short senolytic or senostatic interventions rescue progression of radiation-induced frailty and premature ageing in mice. eLife 2022; 11:75492. [PMID: 35507395 PMCID: PMC9154747 DOI: 10.7554/elife.75492] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2021] [Accepted: 05/03/2022] [Indexed: 12/24/2022] Open
Abstract
Cancer survivors suffer from progressive frailty, multimorbidity, and premature morbidity. We hypothesise that therapy-induced senescence and senescence progression via bystander effects are significant causes of this premature ageing phenotype. Accordingly, the study addresses the question whether a short anti-senescence intervention is able to block progression of radiation-induced frailty and disability in a pre-clinical setting. Male mice were sublethally irradiated at 5 months of age and treated (or not) with either a senolytic drug (Navitoclax or dasatinib + quercetin) for 10 days or with the senostatic metformin for 10 weeks. Follow-up was for 1 year. Treatments commencing within a month after irradiation effectively reduced frailty progression (p<0.05) and improved muscle (p<0.01) and liver (p<0.05) function as well as short-term memory (p<0.05) until advanced age with no need for repeated interventions. Senolytic interventions that started late, after radiation-induced premature frailty was manifest, still had beneficial effects on frailty (p<0.05) and short-term memory (p<0.05). Metformin was similarly effective as senolytics. At therapeutically achievable concentrations, metformin acted as a senostatic neither via inhibition of mitochondrial complex I, nor via improvement of mitophagy or mitochondrial function, but by reducing non-mitochondrial reactive oxygen species production via NADPH oxidase 4 inhibition in senescent cells. Our study suggests that the progression of adverse long-term health and quality-of-life effects of radiation exposure, as experienced by cancer survivors, might be rescued by short-term adjuvant anti-senescence interventions.
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Affiliation(s)
- Edward Fielder
- Newcastle University Biosciences Institute, Newcastle University, Newcastle upon Tyne, Newcastle, United Kingdom
| | - Tengfei Wan
- Newcastle University Biosciences Institute, Newcastle University, Newcastle upon Tyne, Newcastle, United Kingdom
| | - Ghazaleh Alimohammadiha
- Newcastle University Biosciences Institute, Newcastle University, Newcastle upon Tyne, Newcastle, United Kingdom
| | - Abbas Ishaq
- Newcastle University Biosciences Institute, Newcastle University, Newcastle upon Tyne, Newcastle, United Kingdom
| | - Evon Low
- Newcastle University Biosciences Institute, Newcastle University, Newcastle upon Tyne, Newcastle, United Kingdom
| | - B Melanie Weigand
- Newcastle University Biosciences Institute, Newcastle University, Newcastle upon Tyne, Newcastle, United Kingdom
| | - George Kelly
- Newcastle University Biosciences Institute, Newcastle University, Newcastle upon Tyne, Newcastle, United Kingdom
| | - Craig Parker
- Newcastle University Biosciences Institute, Newcastle University, Newcastle upon Tyne, Newcastle, United Kingdom
| | - Brigid Griffin
- Newcastle University Biosciences Institute, Newcastle University, Newcastle upon Tyne, Newcastle, United Kingdom
| | - Diana Jurk
- Newcastle University Biosciences Institute, Newcastle University, Newcastle upon Tyne, Newcastle, United Kingdom
| | - Viktor I Korolchuk
- Newcastle University Biosciences Institute, Newcastle University, Newcastle upon Tyne, Newcastle, United Kingdom
| | - Thomas von Zglinicki
- Newcastle University Biosciences Institute, Newcastle University, Newcastle upon Tyne, Newcastle, United Kingdom
| | - Satomi Miwa
- Newcastle University Biosciences Institute, Newcastle University, Newcastle upon Tyne, Newcastle, United Kingdom
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8
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Costello L, Dicolandrea T, Tasseff R, Isfort R, Bascom C, von Zglinicki T, Przyborski S. Tissue engineering strategies to bioengineer the ageing skin phenotype in vitro. Aging Cell 2022; 21:e13550. [PMID: 35037366 PMCID: PMC8844123 DOI: 10.1111/acel.13550] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Revised: 12/14/2021] [Accepted: 12/29/2021] [Indexed: 11/29/2022] Open
Abstract
Human skin ageing is a complex and heterogeneous process, which is influenced by genetically determined intrinsic factors and accelerated by cumulative exposure to extrinsic stressors. In the current world ageing demographic, there is a requirement for a bioengineered ageing skin model, to further the understanding of the intricate molecular mechanisms of skin ageing, and provide a distinct and biologically relevant platform for testing actives and formulations. There have been many recent advances in the development of skin models that recapitulate aspects of the ageing phenotype in vitro. This review encompasses the features of skin ageing, the molecular mechanisms that drive the ageing phenotype, and tissue engineering strategies that have been utilised to bioengineer ageing skin in vitro.
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Affiliation(s)
| | | | - Ryan Tasseff
- Procter and Gamble Mason Business Center Cincinnati Ohio USA
| | - Robert Isfort
- Procter and Gamble Mason Business Center Cincinnati Ohio USA
| | - Charlie Bascom
- Procter and Gamble Mason Business Center Cincinnati Ohio USA
| | - Thomas von Zglinicki
- Institute for Cell and Molecular Sciences Newcastle University Newcastle Upon Tyne UK
| | - Stefan Przyborski
- Department of Biosciences Durham University Durham UK
- Reprocell Europe Glasgow, Durham UK
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9
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Low E, Alimohammadiha G, Smith LA, Costello LF, Przyborski SA, von Zglinicki T, Miwa S. How good is the evidence that cellular senescence causes skin ageing? Ageing Res Rev 2021; 71:101456. [PMID: 34487917 PMCID: PMC8524668 DOI: 10.1016/j.arr.2021.101456] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [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: 06/18/2021] [Revised: 08/25/2021] [Accepted: 08/31/2021] [Indexed: 12/11/2022]
Abstract
Skin is the largest organ of the body with important protective functions, which become compromised with time due to both intrinsic and extrinsic ageing processes. Cellular senescence is the primary ageing process at cell level, associated with loss of proliferative capacity, mitochondrial dysfunction and significantly altered patterns of expression and secretion of bioactive molecules. Intervention experiments have proven cell senescence as a relevant cause of ageing in many organs. In case of skin, accumulation of senescence in all major compartments with ageing is well documented and might be responsible for most, if not all, the molecular changes observed during ageing. Incorporation of senescent cells into in-vitro skin models (specifically 3D full thickness models) recapitulates changes typically associated with skin ageing. However, crucial evidence is still missing. A beneficial effect of senescent cell ablation on skin ageing has so far only been shown following rather unspecific interventions or in transgenic mouse models. We conclude that evidence for cellular senescence as a relevant cause of intrinsic skin ageing is highly suggestive but not yet completely conclusive.
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Affiliation(s)
- Evon Low
- Ageing Biology Laboratories, Newcastle University Biosciences Institute, Newcastle University, Newcastle upon Tyne NE4 5PL, UK
| | - Ghazaleh Alimohammadiha
- Ageing Biology Laboratories, Newcastle University Biosciences Institute, Newcastle University, Newcastle upon Tyne NE4 5PL, UK
| | - Lucy A Smith
- Department of Biosciences, Durham University, South Road, Durham DH1 3LE, UK
| | - Lydia F Costello
- Department of Biosciences, Durham University, South Road, Durham DH1 3LE, UK
| | - Stefan A Przyborski
- Department of Biosciences, Durham University, South Road, Durham DH1 3LE, UK
| | - Thomas von Zglinicki
- Ageing Biology Laboratories, Newcastle University Biosciences Institute, Newcastle University, Newcastle upon Tyne NE4 5PL, UK.
| | - Satomi Miwa
- Ageing Biology Laboratories, Newcastle University Biosciences Institute, Newcastle University, Newcastle upon Tyne NE4 5PL, UK
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10
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Lagnado A, Leslie J, Ruchaud‐Sparagano M, Victorelli S, Hirsova P, Ogrodnik M, Collins AL, Vizioli MG, Habiballa L, Saretzki G, Evans SA, Salmonowicz H, Hruby A, Geh D, Pavelko KD, Dolan D, Reeves HL, Grellscheid S, Wilson CH, Pandanaboyana S, Doolittle M, von Zglinicki T, Oakley F, Gallage S, Wilson CL, Birch J, Carroll B, Chapman J, Heikenwalder M, Neretti N, Khosla S, Masuda CA, Tchkonia T, Kirkland JL, Jurk D, Mann DA, Passos JF. Neutrophils induce paracrine telomere dysfunction and senescence in ROS-dependent manner. EMBO J 2021; 40:e106048. [PMID: 33764576 PMCID: PMC8090854 DOI: 10.15252/embj.2020106048] [Citation(s) in RCA: 78] [Impact Index Per Article: 26.0] [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: 06/24/2020] [Revised: 02/09/2021] [Accepted: 02/15/2021] [Indexed: 02/06/2023] Open
Abstract
Cellular senescence is characterized by an irreversible cell cycle arrest as well as a pro-inflammatory phenotype, thought to contribute to aging and age-related diseases. Neutrophils have essential roles in inflammatory responses; however, in certain contexts their abundance is associated with a number of age-related diseases, including liver disease. The relationship between neutrophils and cellular senescence is not well understood. Here, we show that telomeres in non-immune cells are highly susceptible to oxidative damage caused by neighboring neutrophils. Neutrophils cause telomere dysfunction both in vitro and ex vivo in a ROS-dependent manner. In a mouse model of acute liver injury, depletion of neutrophils reduces telomere dysfunction and senescence. Finally, we show that senescent cells mediate the recruitment of neutrophils to the aged liver and propose that this may be a mechanism by which senescence spreads to surrounding cells. Our results suggest that interventions that counteract neutrophil-induced senescence may be beneficial during aging and age-related disease.
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11
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Ogrodnik M, Evans SA, Fielder E, Victorelli S, Kruger P, Salmonowicz H, Weigand BM, Patel AD, Pirtskhalava T, Inman CL, Johnson KO, Dickinson SL, Rocha A, Schafer MJ, Zhu Y, Allison DB, von Zglinicki T, LeBrasseur NK, Tchkonia T, Neretti N, Passos JF, Kirkland JL, Jurk D. Whole-body senescent cell clearance alleviates age-related brain inflammation and cognitive impairment in mice. Aging Cell 2021; 20:e13296. [PMID: 33470505 PMCID: PMC7884042 DOI: 10.1111/acel.13296] [Citation(s) in RCA: 151] [Impact Index Per Article: 50.3] [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: 10/30/2020] [Revised: 12/03/2020] [Accepted: 12/06/2020] [Indexed: 01/25/2023] Open
Abstract
Cellular senescence is characterized by an irreversible cell cycle arrest and a pro-inflammatory senescence-associated secretory phenotype (SASP), which is a major contributor to aging and age-related diseases. Clearance of senescent cells has been shown to improve brain function in mouse models of neurodegenerative diseases. However, it is still unknown whether senescent cell clearance alleviates cognitive dysfunction during the aging process. To investigate this, we first conducted single-nuclei and single-cell RNA-seq in the hippocampus from young and aged mice. We observed an age-dependent increase in p16Ink4a senescent cells, which was more pronounced in microglia and oligodendrocyte progenitor cells and characterized by a SASP. We then aged INK-ATTAC mice, in which p16Ink4a -positive senescent cells can be genetically eliminated upon treatment with the drug AP20187 and treated them either with AP20187 or with the senolytic cocktail Dasatinib and Quercetin. We observed that both strategies resulted in a decrease in p16Ink4a exclusively in the microglial population, resulting in reduced microglial activation and reduced expression of SASP factors. Importantly, both approaches significantly improved cognitive function in aged mice. Our data provide proof-of-concept for senolytic interventions' being a potential therapeutic avenue for alleviating age-associated cognitive impairment.
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Affiliation(s)
- Mikolaj Ogrodnik
- Department of Physiology and Biomedical EngineeringMayo ClinicRochesterMNUSA,Robert and Arlene Kogod Center on AgingMayo ClinicRochesterMNUSA
| | - Shane A. Evans
- Department of Molecular Biology, Cell Biology and BiochemistryBrown UniversityProvidenceRIUSA
| | - Edward Fielder
- Biostatistics Consulting CenterSchool of Public Health‐BloomingtonIndiana UniversityBloomingtonINUSA
| | - Stella Victorelli
- Department of Physiology and Biomedical EngineeringMayo ClinicRochesterMNUSA
| | - Patrick Kruger
- Department of Physiology and Biomedical EngineeringMayo ClinicRochesterMNUSA
| | - Hanna Salmonowicz
- Department of Physiology and Biomedical EngineeringMayo ClinicRochesterMNUSA
| | - Bettina M. Weigand
- Department of Physiology and Biomedical EngineeringMayo ClinicRochesterMNUSA,Robert and Arlene Kogod Center on AgingMayo ClinicRochesterMNUSA
| | - Ayush D. Patel
- Department of Physiology and Biomedical EngineeringMayo ClinicRochesterMNUSA
| | | | | | - Kurt O. Johnson
- Robert and Arlene Kogod Center on AgingMayo ClinicRochesterMNUSA
| | - Stephanie L. Dickinson
- Biostatistics Consulting CenterSchool of Public Health‐BloomingtonIndiana UniversityBloomingtonINUSA
| | - Azucena Rocha
- Department of Molecular Biology, Cell Biology and BiochemistryBrown UniversityProvidenceRIUSA
| | | | - Yi Zhu
- Robert and Arlene Kogod Center on AgingMayo ClinicRochesterMNUSA
| | - David B. Allison
- Biostatistics Consulting CenterSchool of Public Health‐BloomingtonIndiana UniversityBloomingtonINUSA
| | - Thomas von Zglinicki
- Faculty of Medical SciencesBiosciences InstituteCampus for Ageing and VitalityNewcastle UniversityNewcastle upon TyneUK,Present address:
Arts and Sciences Faculty, Molecular Biology and GeneticsNear East UniversityMersinTurkey
| | | | - Tamar Tchkonia
- Robert and Arlene Kogod Center on AgingMayo ClinicRochesterMNUSA
| | - Nicola Neretti
- Department of Molecular Biology, Cell Biology and BiochemistryBrown UniversityProvidenceRIUSA
| | - João F. Passos
- Department of Physiology and Biomedical EngineeringMayo ClinicRochesterMNUSA,Robert and Arlene Kogod Center on AgingMayo ClinicRochesterMNUSA
| | - James L. Kirkland
- Department of Physiology and Biomedical EngineeringMayo ClinicRochesterMNUSA,Robert and Arlene Kogod Center on AgingMayo ClinicRochesterMNUSA
| | - Diana Jurk
- Department of Physiology and Biomedical EngineeringMayo ClinicRochesterMNUSA,Robert and Arlene Kogod Center on AgingMayo ClinicRochesterMNUSA
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12
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Abstract
Significance: Cell senescence was originally defined by an acute loss of replicative capacity and thus believed to be restricted to proliferation-competent cells. More recently, senescence has been recognized as a cellular stress and damage response encompassing multiple pathways or senescence domains, namely DNA damage response, cell cycle arrest, senescence-associated secretory phenotype, senescence-associated mitochondrial dysfunction, autophagy/mitophagy dysfunction, nutrient and stress signaling, and epigenetic reprogramming. Each of these domains is activated during senescence, and all appear to interact with each other. Cell senescence has been identified as an important driver of mammalian aging. Recent Advances: Activation of all these senescence domains has now also been observed in a wide range of post-mitotic cells, suggesting that senescence as a stress response can occur in nondividing cells temporally uncoupled from cell cycle arrest. Here, we review recent evidence for post-mitotic cell senescence and speculate about its possible relevance for mammalian aging. Critical Issues: Although a majority of senescence domains has been found to be activated in a range of post-mitotic cells during aging, independent confirmation of these results is still lacking for most of them. Future Directions: To define whether post-mitotic senescence plays a significant role as a driver of aging phenotypes in tissues such as brain, muscle, heart, and others. Antioxid. Redox Signal. 34, 308-323.
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Affiliation(s)
- Thomas von Zglinicki
- Ageing Research Laboratories, Faculty of Medical Sciences, Biosciences Institute, Newcastle University, Newcastle upon Tyne, United Kingdom.,Molecular Biology and Genetics, Arts and Sciences Faculty, Near East University, Nicosia, Turkey
| | - Tengfei Wan
- Ageing Research Laboratories, Faculty of Medical Sciences, Biosciences Institute, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Satomi Miwa
- Ageing Research Laboratories, Faculty of Medical Sciences, Biosciences Institute, Newcastle University, Newcastle upon Tyne, United Kingdom
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13
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Fielder E, Tweedy C, Wilson C, Oakley F, LeBeau FEN, Passos JF, Mann DA, von Zglinicki T, Jurk D. Anti-inflammatory treatment rescues memory deficits during aging in nfkb1 -/- mice. Aging Cell 2020; 19:e13188. [PMID: 32915495 PMCID: PMC7576267 DOI: 10.1111/acel.13188] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [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: 04/13/2020] [Revised: 05/29/2020] [Accepted: 06/14/2020] [Indexed: 12/11/2022] Open
Abstract
Chronic inflammation is a common feature of many age-related conditions including neurodegenerative diseases such as Alzheimer's disease. Cellular senescence is a state of irreversible cell-cycle arrest, thought to contribute to neurodegenerative diseases partially via induction of a chronic pro-inflammatory phenotype. In this study, we used a mouse model of genetically enhanced NF-κB activity (nfκb1-/- ), characterized by low-grade chronic inflammation and premature aging, to investigate the impact of inflammaging on cognitive decline. We found that during aging, nfkb1-/- mice show an early onset of memory loss, combined with enhanced neuroinflammation and increased frequency of senescent cells in the hippocampus and cerebellum. Electrophysiological measurements in the hippocampus of nfkb1-/- mice in vitro revealed deficits in gamma frequency oscillations, which could explain the decline in memory capacity. Importantly, treatment with the nonsteroidal anti-inflammatory drug (NASID) ibuprofen reduced neuroinflammation and senescent cell burden resulting in significant improvements in cognitive function and gamma frequency oscillations. These data support the hypothesis that chronic inflammation is a causal factor in the cognitive decline observed during aging.
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Affiliation(s)
- Edward Fielder
- Biosciences InstituteAgeing Research LaboratoriesCampus for Ageing and VitalityNewcastle UniversityNewcastle upon TyneUK
| | - Clare Tweedy
- Biosciences InstituteFaculty of Medical SciencesNewcastle UniversityNewcastleUK
| | - Caroline Wilson
- Bioscience InstituteImmunity and InflammationNewcastle Fibrosis Research GroupFaculty of Medical SciencesNewcastle UniversityNewcastle upon TyneUK
| | - Fiona Oakley
- Bioscience InstituteImmunity and InflammationNewcastle Fibrosis Research GroupFaculty of Medical SciencesNewcastle UniversityNewcastle upon TyneUK
| | - Fiona E. N. LeBeau
- Biosciences InstituteFaculty of Medical SciencesNewcastle UniversityNewcastleUK
| | - João F. Passos
- Robert and Arlene Kogod Center on AgingMayo ClinicRochesterMNUSA
- Department of Physiology and Biomedical EngineeringMayo ClinicRochesterMNUSA
| | - Derek A. Mann
- Bioscience InstituteImmunity and InflammationNewcastle Fibrosis Research GroupFaculty of Medical SciencesNewcastle UniversityNewcastle upon TyneUK
| | - Thomas von Zglinicki
- Biosciences InstituteAgeing Research LaboratoriesCampus for Ageing and VitalityNewcastle UniversityNewcastle upon TyneUK
| | - Diana Jurk
- Biosciences InstituteAgeing Research LaboratoriesCampus for Ageing and VitalityNewcastle UniversityNewcastle upon TyneUK
- Robert and Arlene Kogod Center on AgingMayo ClinicRochesterMNUSA
- Department of Physiology and Biomedical EngineeringMayo ClinicRochesterMNUSA
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14
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Granic A, Martin-Ruiz C, Dodds RM, Robinson L, Spyridopoulos I, Kirkwood TB, von Zglinicki T, Sayer AA. Immunosenescence profiles are not associated with muscle strength, physical performance and sarcopenia risk in very old adults: The Newcastle 85+ Study. Mech Ageing Dev 2020; 190:111321. [PMID: 32735896 DOI: 10.1016/j.mad.2020.111321] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2020] [Revised: 07/24/2020] [Accepted: 07/25/2020] [Indexed: 01/10/2023]
Abstract
Decline in immune system function (immunosenescence) has been implicated in several age-related disorders. However, little is known about whether alteration in T-cell senescence, a process underlying immunological ageing, is related to muscle health in very old adults (aged ≥85 years). Utilising data from the Newcastle 85+ Study, we aimed to (a) derive and characterise immunosenescence profiles by clustering 13 baseline immunosenescence-related biomarkers of lymphocyte compartments in 657 participants; (b) explore the association between the profiles and 5-year change in muscle strength (grip strength) and physical performance (Timed Up-and-Go test), and (c) determine whether immunosenescence profiles predict 3-year incident sarcopenia. Two distinct clusters were identified; Cluster 1 ('Senescent-like phenotype', n = 421), and Cluster 2 ('Less senescent-like phenotype', n = 236) in individuals with complete biomarker data. Although Cluster 1 was characterised by T-cell senescence (e.g., higher frequency of CD4 and CD8 senescence-like effector memory cells), and elements of the immune risk profile (lower CD4/CD8 ratio, CMV+), it was not associated with change in muscle function over time, or with prevalent or incident sarcopenia. Future studies will determine whether more in-depth characterisation or change in T-cell phenotypes predict the decline in muscle health in late adulthood.
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Affiliation(s)
- Antoneta Granic
- AGE Research Group, Translational and Clinical Research Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, United Kingdom; NIHR Newcastle Biomedical Research Centre, Newcastle upon Tyne Hospitals NHS Foundation Trust and Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Carmen Martin-Ruiz
- Biosciences Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Richard M Dodds
- AGE Research Group, Translational and Clinical Research Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, United Kingdom; NIHR Newcastle Biomedical Research Centre, Newcastle upon Tyne Hospitals NHS Foundation Trust and Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Louise Robinson
- Population Health Sciences Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Ioakim Spyridopoulos
- Biosciences Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Thomas Bl Kirkwood
- Biosciences Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Thomas von Zglinicki
- Biosciences Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Avan A Sayer
- AGE Research Group, Translational and Clinical Research Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, United Kingdom; NIHR Newcastle Biomedical Research Centre, Newcastle upon Tyne Hospitals NHS Foundation Trust and Newcastle University, Newcastle upon Tyne, United Kingdom.
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15
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Choudhury AR, Ju Z, Djojosubroto MW, Schienke A, Lechel A, Schaetzlein S, Jiang H, Stepczynska A, Wang C, Buer J, Lee HW, von Zglinicki T, Ganser A, Schirmacher P, Nakauchi H, Rudolph KL. Author Correction: Cdkn1a deletion improves stem cell function and lifespan of mice with dysfunctional telomeres without accelerating cancer formation. Nat Genet 2020; 52:548. [PMID: 32355231 DOI: 10.1038/s41588-020-0593-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
An amendment to this paper has been published and can be accessed via a link at the top of the paper.
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Affiliation(s)
- Aaheli Roy Choudhury
- Department of Gastroenterology, Hepatology and Endocrinology, Hannover Medical School, Hannover, Germany
| | - Zhenyu Ju
- Department of Gastroenterology, Hepatology and Endocrinology, Hannover Medical School, Hannover, Germany
| | - Meta W Djojosubroto
- Department of Gastroenterology, Hepatology and Endocrinology, Hannover Medical School, Hannover, Germany
| | - Andrea Schienke
- Department of Gastroenterology, Hepatology and Endocrinology, Hannover Medical School, Hannover, Germany
| | - Andre Lechel
- Department of Gastroenterology, Hepatology and Endocrinology, Hannover Medical School, Hannover, Germany
| | - Sonja Schaetzlein
- Department of Gastroenterology, Hepatology and Endocrinology, Hannover Medical School, Hannover, Germany
| | - Hong Jiang
- Department of Gastroenterology, Hepatology and Endocrinology, Hannover Medical School, Hannover, Germany
| | - Anna Stepczynska
- Department of Gastroenterology, Hepatology and Endocrinology, Hannover Medical School, Hannover, Germany.,Department of Mucosal Immunity, Helmholtz Centre for Infection Research, Braunschweig, Germany
| | - Chunfang Wang
- Institute for Aging and Health, University of Newcastle Upon Tyne, Newcastle, UK
| | - Jan Buer
- Department of Mucosal Immunity, Helmholtz Centre for Infection Research, Braunschweig, Germany.,Institute of Medical Microbiology, Hannover Medical School, Hannover, Germany
| | | | - Thomas von Zglinicki
- Institute for Aging and Health, University of Newcastle Upon Tyne, Newcastle, UK
| | - Arnold Ganser
- Department of Hematology and Oncology, Hannover, Germany
| | | | - Hiromitsu Nakauchi
- Laboratory of Stem Cell Therapy, Institute of Medical Science, University of Tokyo, Tokyo, Japan
| | - K Lenhard Rudolph
- Department of Gastroenterology, Hepatology and Endocrinology, Hannover Medical School, Hannover, Germany.
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16
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Martin-Ruiz C, Hoffmann J, Shmeleva E, Zglinicki TV, Richardson G, Draganova L, Redgrave R, Collerton J, Arthur H, Keavney B, Spyridopoulos I. CMV-independent increase in CD27-CD28+ CD8+ EMRA T cells is inversely related to mortality in octogenarians. NPJ Aging Mech Dis 2020; 6:3. [PMID: 31993214 PMCID: PMC6972903 DOI: 10.1038/s41514-019-0041-y] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2019] [Accepted: 12/19/2019] [Indexed: 12/14/2022] Open
Abstract
Cytomegalovirus (CMV) seropositivity in adults has been linked to increased cardiovascular disease burden. Phenotypically, CMV infection leads to an inflated CD8 T-lymphocyte compartment. We employed a 8-colour flow cytometric protocol to analyse circulating T cells in 597 octogenarians from the same birth cohort together with NT-proBNP measurements and followed all participants over 7 years. We found that, independent of CMV serostatus, a high number of CD27-CD28+ CD8 EMRA T-lymphocytes (TEMRA) protected from all-cause death after adjusting for known risk factors, such as heart failure, frailty or cancer (Hazard ratio 0.66 for highest vs lowest tertile; confidence interval 0.51-0.86). In addition, CD27-CD28+ CD8 EMRA T-lymphocytes protected from both, non-cardiovascular (hazard ratio 0.59) and cardiovascular death (hazard ratio 0.65). In aged mice treated with the senolytic navitoclax, in which we have previously shown a rejuvenated cardiac phenotype, CD8 effector memory cells are decreased, further indicating that alterations in T cell subpopulations are associated with cardiovascular ageing. Future studies are required to show whether targeting immunosenescence will lead to enhanced life- or healthspan.
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Affiliation(s)
- Carmen Martin-Ruiz
- 1Biosciences Institute, Newcastle University, Newcastle upon Tyne, UK
- 2Institute of Neuroscience, Newcastle University, Newcastle upon Tyne, UK
| | - Jedrzej Hoffmann
- 3Department of Medicine, Cardiology, Goethe University Hospital Frankfurt, Frankfurt a. M., Germany
| | | | - Thomas von Zglinicki
- 1Biosciences Institute, Newcastle University, Newcastle upon Tyne, UK
- 5Institute for Cell and Molecular Biosciences, Newcastle University, Newcastle upon Tyne, UK
| | - Gavin Richardson
- 1Biosciences Institute, Newcastle University, Newcastle upon Tyne, UK
| | - Lilia Draganova
- 6Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, UK
| | - Rachael Redgrave
- 1Biosciences Institute, Newcastle University, Newcastle upon Tyne, UK
| | - Joanna Collerton
- 1Biosciences Institute, Newcastle University, Newcastle upon Tyne, UK
| | - Helen Arthur
- 1Biosciences Institute, Newcastle University, Newcastle upon Tyne, UK
| | - Bernard Keavney
- 7UK Division of Cardiovascular Sciences, School of Medical Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, UK
- 8Manchester University NHS Foundation Trust, Manchester Academic Health Science Centre, Manchester, UK
| | - Ioakim Spyridopoulos
- 1Biosciences Institute, Newcastle University, Newcastle upon Tyne, UK
- 6Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, UK
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17
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Gorgoulis V, Adams PD, Alimonti A, Bennett DC, Bischof O, Bishop C, Campisi J, Collado M, Evangelou K, Ferbeyre G, Gil J, Hara E, Krizhanovsky V, Jurk D, Maier AB, Narita M, Niedernhofer L, Passos JF, Robbins PD, Schmitt CA, Sedivy J, Vougas K, von Zglinicki T, Zhou D, Serrano M, Demaria M. Cellular Senescence: Defining a Path Forward. Cell 2019; 179:813-827. [PMID: 31675495 DOI: 10.1016/j.cell.2019.10.005] [Citation(s) in RCA: 1339] [Impact Index Per Article: 267.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2019] [Revised: 09/20/2019] [Accepted: 10/03/2019] [Indexed: 01/10/2023]
Abstract
Cellular senescence is a cell state implicated in various physiological processes and a wide spectrum of age-related diseases. Recently, interest in therapeutically targeting senescence to improve healthy aging and age-related disease, otherwise known as senotherapy, has been growing rapidly. Thus, the accurate detection of senescent cells, especially in vivo, is essential. Here, we present a consensus from the International Cell Senescence Association (ICSA), defining and discussing key cellular and molecular features of senescence and offering recommendations on how to use them as biomarkers. We also present a resource tool to facilitate the identification of genes linked with senescence, SeneQuest (available at http://Senequest.net). Lastly, we propose an algorithm to accurately assess and quantify senescence, both in cultured cells and in vivo.
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Affiliation(s)
- Vassilis Gorgoulis
- Molecular Carcinogenesis Group, Department of Histology and Embryology, Medical School, National and Kapodistrian University of Athens, Athens, Greece; Biomedical Research Foundation, Academy of Athens, Athens, Greece; Faculty Institute for Cancer Sciences, Manchester Academic Health Sciences Centre, University of Manchester, Manchester, UK; Center for New Biotechnologies and Precision Medicine, Medical School, National and Kapodistrian University of Athens, Athens, Greece.
| | - Peter D Adams
- Institute of Cancer Sciences, University of Glasgow, Glasgow G61 1BD, UK; CRUK Beatson Institute, Glasgow G61 1BD, UK; Sanford Burnham Prebys Medical Discovery Institute, La Jolla, CA 92037, USA
| | - Andrea Alimonti
- Institute of Oncology Research (IOR), Oncology Institute of Southern Switzerland, Bellinzona, Switzerland; Università della Svizzera Italiana, Faculty of Biomedical Sciences, Lugano, Switzerland; Department of Medicine, University of Padova, Padova, Italy; Veneto Institute of Molecular Medicine, Padova, Italy
| | - Dorothy C Bennett
- Molecular and Clinical Sciences Research Institute, St. George's, University of London, London SW17 0RE, UK
| | - Oliver Bischof
- Laboratory of Nuclear Organization and Oncogenesis, Department of Cell Biology and Infection, Inserm U993, Institute Pasteur, Paris, France
| | - Cleo Bishop
- Centre for Cell Biology and Cutaneous Research, Blizard Institute, Barts & The London School of Medicine and Dentistry, Queen Mary University of London, 4 Newark St, London E1 2AT, UK
| | | | - Manuel Collado
- Health Research Institute of Santiago de Compostela (IDIS), Clinical University Hospital (CHUS), Santiago de Compostela, Spain
| | - Konstantinos Evangelou
- Molecular Carcinogenesis Group, Department of Histology and Embryology, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - Gerardo Ferbeyre
- Faculty of Medicine, Department of Biochemistry, Université de Montréal and CRCHUM, Montreal, QC, Canada
| | - Jesús Gil
- MRC London Institute of Medical Sciences (LMS), Du Cane Road, London, UK; Institute of Clinical Sciences (ICS), Faculty of Medicine, Imperial College London, Du Cane Road, London, UK
| | - Eiji Hara
- Department of Molecular Microbiology, Research Institute for Microbial Diseases, Osaka University, Osaka, Japan
| | - Valery Krizhanovsky
- Department of Molecular Cell Biology, Weizmann Institute of Science, Rehovot, Israel
| | - Diana Jurk
- Robert and Arlene Kogod Center on Aging, Mayo Clinic, Rochester, MN, USA
| | - Andrea B Maier
- Department of Human Movement Sciences, Faculty of Behavioural and Movement Sciences, Amsterdam Movement Sciences, Vrije Universiteit, Amsterdam, the Netherlands; Department of Medicine and Aged Care, The Royal Melbourne Hospital, The University of Melbourne, Melbourne, VIC, Australia
| | - Masashi Narita
- Cancer Research UK Cambridge Institute, Li Ka Shing Centre, University of Cambridge, Cambridge CB2 0RE, United Kingdom
| | - Laura Niedernhofer
- Institute on the Biology of Aging and Metabolism, University of Minnesota, MN, USA
| | - João F Passos
- Robert and Arlene Kogod Center on Aging, Mayo Clinic, Rochester, MN, USA
| | - Paul D Robbins
- Institute on the Biology of Aging and Metabolism, University of Minnesota, MN, USA
| | - Clemens A Schmitt
- Charité - University Medical Center, Department of Hematology, Oncology and Tumor Immunology, Virchow Campus, and Molekulares Krebsforschungszentrum, Berlin, Germany; Max-Delbrück-Center for Molecular Medicine in the Helmholtz Association, Berlin, Germany; Kepler University Hospital, Department of Hematology and Oncology, Johannes Kepler University, Linz, Austria
| | - John Sedivy
- Department of Molecular Biology, Cell Biology and Biochemistry, and Center for the Biology of Aging, Brown University, Providence, RI, USA
| | | | - Thomas von Zglinicki
- Newcastle University Institute for Ageing, Institute for Cell and Molecular Biology, Campus for Ageing and Vitality, Newcastle University, Newcastle upon Tyne NE4 5PL, UK
| | - Daohong Zhou
- Department of Pharmacodynamics, College of Pharmacy, University of Florida, Gainesville, FL, USA
| | - Manuel Serrano
- Catalan Institution for Research and Advanced Studies (ICREA), Barcelona, Spain; Institute for Research in Biomedicine (IRB Barcelona), Barcelona Institute of Science and Technology (BIST), Barcelona, Spain.
| | - Marco Demaria
- University of Groningen (RUG), European Research Institute for the Biology of Aging (ERIBA), University Medical Center Groningen (UMCG), Groningen, the Netherlands.
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18
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Bateson M, Aviv A, Bendix L, Benetos A, Ben-Shlomo Y, Bojesen SE, Cooper C, Cooper R, Deary IJ, Hägg S, Harris SE, Kark JD, Kronenberg F, Kuh D, Labat C, Martin-Ruiz CM, Meyer C, Nordestgaard BG, Penninx BWJH, Pepper GV, Révész D, Said MA, Starr JM, Syddall H, Thomson WM, van der Harst P, Whooley M, von Zglinicki T, Willeit P, Zhan Y, Nettle D. Smoking does not accelerate leucocyte telomere attrition: a meta-analysis of 18 longitudinal cohorts. R Soc Open Sci 2019; 6:190420. [PMID: 31312500 PMCID: PMC6599800 DOI: 10.1098/rsos.190420] [Citation(s) in RCA: 25] [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] [Figures] [Subscribe] [Scholar Register] [Received: 03/06/2019] [Accepted: 05/03/2019] [Indexed: 06/10/2023]
Abstract
Smoking is associated with shorter leucocyte telomere length (LTL), a biomarker of increased morbidity and reduced longevity. This association is widely interpreted as evidence that smoking causes accelerated LTL attrition in adulthood, but the evidence for this is inconsistent. We analysed the association between smoking and LTL dynamics in 18 longitudinal cohorts. The dataset included data from 12 579 adults (4678 current smokers and 7901 non-smokers) over a mean follow-up interval of 8.6 years. Meta-analysis confirmed a cross-sectional difference in LTL between smokers and non-smokers, with mean LTL 84.61 bp shorter in smokers (95% CI: 22.62 to 146.61). However, LTL attrition was only 0.51 bp yr-1 faster in smokers than in non-smokers (95% CI: -2.09 to 1.08), a difference that equates to only 1.32% of the estimated age-related loss of 38.33 bp yr-1. Assuming a linear effect of smoking, 167 years of smoking would be required to generate the observed cross-sectional difference in LTL. Therefore, the difference in LTL between smokers and non-smokers is extremely unlikely to be explained by a linear, causal effect of smoking. Selective adoption, whereby individuals with short telomeres are more likely to start smoking, needs to be considered as a more plausible explanation for the observed pattern of telomere dynamics.
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Affiliation(s)
- Melissa Bateson
- Centre for Behaviour and Evolution and Institute of Neuroscience, Newcastle University, Newcastle upon Tyne NE2 4HH, UK
| | - Abraham Aviv
- Center of Human Development and Aging, New Jersey Medical School, Rutgers University, Newark, NJ 07103, USA
| | - Laila Bendix
- Pain Center South, Department of Anesthesiology and Intensive Care Medicine, University Hospital Odense, Odense, Denmark
| | - Athanase Benetos
- Department of Geriatric Medicine, CHRU de Nancy, Université de Lorraine, Nancy, France
| | - Yoav Ben-Shlomo
- School of Social and Community Medicine, University of Bristol, Canynge Hall, Bristol, UK
| | - Stig E. Bojesen
- Department of Clinical Biochemistry, Herlev and Gentofte Hospital, Copenhagen University Hospital, Copenhagen University, Copenhagen, 2730 Herlev, Denmark
| | - Cyrus Cooper
- MRC Lifecourse Epidemiology Unit, University of Southampton, Southampton General Hospital, Southampton SO16 6YD, UK
| | - Rachel Cooper
- MRC Unit for Lifelong Health and Ageing at UCL, University College London, 33 Bedford Place, London WC1B 5JU, UK
| | - Ian J. Deary
- Centre for Cognitive Ageing and Cognitive Epidemiology, Department of Psychology, University of Edinburgh, Edinburgh EH8 9JZ, UK
| | - Sara Hägg
- Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, 17177 Stockholm, Sweden
| | - Sarah E. Harris
- Centre for Cognitive Ageing and Cognitive Epidemiology, Department of Psychology, University of Edinburgh, Edinburgh EH8 9JZ, UK
- Medical Genetics Section, University of Edinburgh Centre for Genomic and Experimental Medicine and MRC Institute of Genetics and Molecular Medicine, Edinburgh EH4 2XU, UK
| | - Jeremy D. Kark
- Hebrew University–Hadassah School of Public Health and Community Medicine, Ein Kerem, Jerusalem, Israel
| | - Florian Kronenberg
- Division of Genetic Epidemiology, Department of Medical Genetics, Molecular and Clinical Pharmacology, Medical University of Innsbruck, Innsbruck 6020, Austria
| | - Diana Kuh
- MRC Unit for Lifelong Health and Ageing at UCL, University College London, 33 Bedford Place, London WC1B 5JU, UK
| | - Carlos Labat
- INSERM U1116, Université de Lorraine, Nancy, France
| | - Carmen M. Martin-Ruiz
- Centre for Behaviour and Evolution and Institute of Neuroscience, Newcastle University, Newcastle upon Tyne NE2 4HH, UK
| | - Craig Meyer
- Department of Medicine, University of California, San Francisco, CA 94121, USA
| | - Børge G. Nordestgaard
- Department of Clinical Biochemistry, Herlev and Gentofte Hospital, Copenhagen University Hospital, Copenhagen University, Copenhagen, 2730 Herlev, Denmark
| | - Brenda W. J. H. Penninx
- Department of Psychiatry, VU University Medical Center, Oldenaller 1, 1081 HJ Amsterdam, The Netherlands
| | - Gillian V. Pepper
- Centre for Behaviour and Evolution and Institute of Neuroscience, Newcastle University, Newcastle upon Tyne NE2 4HH, UK
| | - Dóra Révész
- Department of Epidemiology, GROW School for Oncology and Developmental Biology, Maastricht University, PO Box 616, 6200 MD Maastricht, The Netherlands
| | - M. Abdullah Said
- Department of Cardiology, University Medical Center Groningen, University of Groningen, Groningen 9700 RB, The Netherlands
| | - John M. Starr
- Centre for Cognitive Ageing and Cognitive Epidemiology, Department of Psychology, University of Edinburgh, Edinburgh EH8 9JZ, UK
- Alzheimer Scotland Dementia Research Centre, University of Edinburgh, Edinburgh EH8 9JZ, UK
| | - Holly Syddall
- MRC Lifecourse Epidemiology Unit, University of Southampton, Southampton General Hospital, Southampton SO16 6YD, UK
| | - William Murray Thomson
- Sir John Walsh Research Institute, Faculty of Dentistry, University of Otago, Dunedin 9054, New Zealand
| | - Pim van der Harst
- Department of Cardiology, University Medical Center Groningen, University of Groningen, Groningen 9700 RB, The Netherlands
| | - Mary Whooley
- Department of Medicine, University of California, San Francisco, CA 94121, USA
| | - Thomas von Zglinicki
- Institute for Cell and Molecular Biosciences, Newcastle University, Newcastle upon Tyne, UK
- Arts and Sciences Faculty, Molecular Biology and Genetics, Near East University, Nicosia, North Cyprus, Mersin 10, Turkey
| | - Peter Willeit
- Department of Neurology, Medical University of Innsbruck, Innsbruck 6020, Austria
- Department of Public Health and Primary Care, University of Cambridge, Cambridge, UK
| | - Yiqiang Zhan
- Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, 17177 Stockholm, Sweden
| | - Daniel Nettle
- Centre for Behaviour and Evolution and Institute of Neuroscience, Newcastle University, Newcastle upon Tyne NE2 4HH, UK
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19
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Fielder E, Weigand M, Agneessens J, Griffin B, Parker C, Miwa S, von Zglinicki T. Sublethal whole-body irradiation causes progressive premature frailty in mice. Mech Ageing Dev 2019; 180:63-69. [PMID: 30954485 PMCID: PMC6546927 DOI: 10.1016/j.mad.2019.03.006] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [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: 01/28/2019] [Revised: 03/07/2019] [Accepted: 03/26/2019] [Indexed: 12/24/2022]
Abstract
There is an unmet need to develop and validate therapies that can treat or at least prevent premature therapy-induced frailty, multi-morbidity and mortality in long-term tumour survivors. In an approach to develop a first mouse model for therapy-induced long-term frailty, we irradiated male C57Bl/6 mice at 5-6 months of age sub-lethally with 3 × 3 Gy (whole body) and assessed subsequent frailty for up to 6 months using a Rockwood-type frailty index (FI). Frailty scorers were trained to obtain excellent inter- and intra-observer reproducibility. Irradiated mice developed progressive frailty approximately twice as fast as controls. This was premature frailty; it was phenotypically identical to that in non-irradiated mice at higher age. As expected, frailty was associated with decreased cognition and predicted mortality. In irradiated mice, frailty and neuromuscular performance, measured by Rotarod and Hanging Wire tests, were not associated with each other, probably because of long-term decreased body weights after irradiation. We conclude that progressive frailty following sub-lethal irradiation comprises a sensitive and easy to use test bed for interventions to stop premature ageing in long-term tumour survivors.
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Affiliation(s)
- Edward Fielder
- Newcastle University Institute for Ageing and Institute for Cell and Molecular Biology, Campus for Ageing and Vitality, Newcastle University, Newcastle Upon Tyne, NE4 5PL, UK
| | - Melanie Weigand
- Newcastle University Institute for Ageing and Institute for Cell and Molecular Biology, Campus for Ageing and Vitality, Newcastle University, Newcastle Upon Tyne, NE4 5PL, UK
| | - Julien Agneessens
- Newcastle University Institute for Ageing and Institute for Cell and Molecular Biology, Campus for Ageing and Vitality, Newcastle University, Newcastle Upon Tyne, NE4 5PL, UK
| | - Brigid Griffin
- Newcastle University Institute for Ageing and Institute for Cell and Molecular Biology, Campus for Ageing and Vitality, Newcastle University, Newcastle Upon Tyne, NE4 5PL, UK
| | - Craig Parker
- NIHR Newcastle Biomedical Research Centre, Institute of Neurosciences, Newcastle University, Campus for Ageing and Vitality, Newcastle Upon Tyne, NE4 5PL, UK
| | - Satomi Miwa
- Newcastle University Institute for Ageing and Institute for Cell and Molecular Biology, Campus for Ageing and Vitality, Newcastle University, Newcastle Upon Tyne, NE4 5PL, UK
| | - Thomas von Zglinicki
- Newcastle University Institute for Ageing and Institute for Cell and Molecular Biology, Campus for Ageing and Vitality, Newcastle University, Newcastle Upon Tyne, NE4 5PL, UK.
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20
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Palmer AK, Xu M, Zhu Y, Pirtskhalava T, Weivoda MM, Hachfeld CM, Prata LG, van Dijk TH, Verkade E, Casaclang‐Verzosa G, Johnson KO, Cubro H, Doornebal EJ, Ogrodnik M, Jurk D, Jensen MD, Chini EN, Miller JD, Matveyenko A, Stout MB, Schafer MJ, White TA, Hickson LJ, Demaria M, Garovic V, Grande J, Arriaga EA, Kuipers F, von Zglinicki T, LeBrasseur NK, Campisi J, Tchkonia T, Kirkland JL. Targeting senescent cells alleviates obesity-induced metabolic dysfunction. Aging Cell 2019; 18:e12950. [PMID: 30907060 PMCID: PMC6516193 DOI: 10.1111/acel.12950] [Citation(s) in RCA: 343] [Impact Index Per Article: 68.6] [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: 01/25/2019] [Revised: 02/16/2019] [Accepted: 03/03/2019] [Indexed: 12/18/2022] Open
Abstract
Adipose tissue inflammation and dysfunction are associated with obesity-related insulin resistance and diabetes, but mechanisms underlying this relationship are unclear. Although senescent cells accumulate in adipose tissue of obese humans and rodents, a direct pathogenic role for these cells in the development of diabetes remains to be demonstrated. Here, we show that reducing senescent cell burden in obese mice, either by activating drug-inducible "suicide" genes driven by the p16Ink4a promoter or by treatment with senolytic agents, alleviates metabolic and adipose tissue dysfunction. These senolytic interventions improved glucose tolerance, enhanced insulin sensitivity, lowered circulating inflammatory mediators, and promoted adipogenesis in obese mice. Elimination of senescent cells also prevented the migration of transplanted monocytes into intra-abdominal adipose tissue and reduced the number of macrophages in this tissue. In addition, microalbuminuria, renal podocyte function, and cardiac diastolic function improved with senolytic therapy. Our results implicate cellular senescence as a causal factor in obesity-related inflammation and metabolic derangements and show that emerging senolytic agents hold promise for treating obesity-related metabolic dysfunction and its complications.
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21
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Kucheryavenko O, Nelson G, von Zglinicki T, Korolchuk VI, Carroll B. The mTORC1-autophagy pathway is a target for senescent cell elimination. Biogerontology 2019; 20:331-335. [PMID: 30798505 PMCID: PMC6535413 DOI: 10.1007/s10522-019-09802-9] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [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: 12/03/2018] [Accepted: 02/12/2019] [Indexed: 02/02/2023]
Abstract
Cellular senescence has recently been established as a key driver of organismal ageing. The state of senescence is controlled by extensive rewiring of signalling pathways, at the heart of which lies the mammalian Target of Rapamycin Complex I (mTORC1). Here we discuss recent publications aiming to establish the mechanisms by which mTORC1 drives the senescence program. In particular, we highlight our data indicating that mTORC1 can be used as a target for senescence cell elimination in vitro. Suppression of mTORC1 is known to extend lifespan of yeast, worms, flies and some mouse models and our proof-of-concept experiments suggest that it can also act by reducing senescent cell load in vivo.
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Affiliation(s)
- Olena Kucheryavenko
- Institute for Cell and Molecular Biosciences, Newcastle University, Newcastle upon Tyne, NE4 5PL, UK
- The Federal Institute for Risk Assessment, 10589, Berlin, Germany
| | - Glyn Nelson
- Institute for Cell and Molecular Biosciences, Newcastle University, Newcastle upon Tyne, NE4 5PL, UK
| | - Thomas von Zglinicki
- Institute for Cell and Molecular Biosciences, Newcastle University, Newcastle upon Tyne, NE4 5PL, UK.
| | - Viktor I Korolchuk
- Institute for Cell and Molecular Biosciences, Newcastle University, Newcastle upon Tyne, NE4 5PL, UK.
| | - Bernadette Carroll
- Institute for Cell and Molecular Biosciences, Newcastle University, Newcastle upon Tyne, NE4 5PL, UK.
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22
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Ogrodnik M, Zhu Y, Langhi LGP, Tchkonia T, Krüger P, Fielder E, Victorelli S, Ruswhandi RA, Giorgadze N, Pirtskhalava T, Podgorni O, Enikolopov G, Johnson KO, Xu M, Inman C, Palmer AK, Schafer M, Weigl M, Ikeno Y, Burns TC, Passos JF, von Zglinicki T, Kirkland JL, Jurk D. Obesity-Induced Cellular Senescence Drives Anxiety and Impairs Neurogenesis. Cell Metab 2019; 29:1061-1077.e8. [PMID: 30612898 PMCID: PMC6509403 DOI: 10.1016/j.cmet.2018.12.008] [Citation(s) in RCA: 238] [Impact Index Per Article: 47.6] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/19/2018] [Revised: 10/23/2018] [Accepted: 12/05/2018] [Indexed: 12/25/2022]
Abstract
Cellular senescence entails a stable cell-cycle arrest and a pro-inflammatory secretory phenotype, which contributes to aging and age-related diseases. Obesity is associated with increased senescent cell burden and neuropsychiatric disorders, including anxiety and depression. To investigate the role of senescence in obesity-related neuropsychiatric dysfunction, we used the INK-ATTAC mouse model, from which p16Ink4a-expressing senescent cells can be eliminated, and senolytic drugs dasatinib and quercetin. We found that obesity results in the accumulation of senescent glial cells in proximity to the lateral ventricle, a region in which adult neurogenesis occurs. Furthermore, senescent glial cells exhibit excessive fat deposits, a phenotype we termed "accumulation of lipids in senescence." Clearing senescent cells from high fat-fed or leptin receptor-deficient obese mice restored neurogenesis and alleviated anxiety-related behavior. Our study provides proof-of-concept evidence that senescent cells are major contributors to obesity-induced anxiety and that senolytics are a potential new therapeutic avenue for treating neuropsychiatric disorders.
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Affiliation(s)
- Mikolaj Ogrodnik
- Institute for Cell and Molecular Biosciences, Newcastle University Institute for Ageing, Campus for Ageing and Vitality, Newcastle upon Tyne NE4 5PL, UK; Robert and Arlene Kogod Center on Aging, Mayo Clinic, 200 First Street SW, Rochester, MN 55905, USA
| | - Yi Zhu
- Robert and Arlene Kogod Center on Aging, Mayo Clinic, 200 First Street SW, Rochester, MN 55905, USA
| | - Larissa G P Langhi
- Robert and Arlene Kogod Center on Aging, Mayo Clinic, 200 First Street SW, Rochester, MN 55905, USA
| | - Tamar Tchkonia
- Robert and Arlene Kogod Center on Aging, Mayo Clinic, 200 First Street SW, Rochester, MN 55905, USA
| | - Patrick Krüger
- Institute for Cell and Molecular Biosciences, Newcastle University Institute for Ageing, Campus for Ageing and Vitality, Newcastle upon Tyne NE4 5PL, UK
| | - Edward Fielder
- Institute for Cell and Molecular Biosciences, Newcastle University Institute for Ageing, Campus for Ageing and Vitality, Newcastle upon Tyne NE4 5PL, UK
| | - Stella Victorelli
- Institute for Cell and Molecular Biosciences, Newcastle University Institute for Ageing, Campus for Ageing and Vitality, Newcastle upon Tyne NE4 5PL, UK
| | - Rifqha A Ruswhandi
- Institute for Cell and Molecular Biosciences, Newcastle University Institute for Ageing, Campus for Ageing and Vitality, Newcastle upon Tyne NE4 5PL, UK
| | - Nino Giorgadze
- Robert and Arlene Kogod Center on Aging, Mayo Clinic, 200 First Street SW, Rochester, MN 55905, USA
| | - Tamar Pirtskhalava
- Robert and Arlene Kogod Center on Aging, Mayo Clinic, 200 First Street SW, Rochester, MN 55905, USA
| | - Oleg Podgorni
- Department of Anesthesiology, Stony Brook School of Medicine, 101 Nicolls Road, Stony Brook, New York, NY 11794, USA; Center for Developmental Genetics, Stony Brook University, 100 Nicolls Road, Stony Brook, New York, NY 11794, USA
| | - Grigori Enikolopov
- Department of Anesthesiology, Stony Brook School of Medicine, 101 Nicolls Road, Stony Brook, New York, NY 11794, USA; Center for Developmental Genetics, Stony Brook University, 100 Nicolls Road, Stony Brook, New York, NY 11794, USA; Department of Nano-, Bio-, Information Technology and Cognitive Science, Moscow Institute of Physics and Technology, Moscow, Russia; Cold Spring Harbor Laboratory, Cold Spring Harbor, New York, NY, USA
| | - Kurt O Johnson
- Robert and Arlene Kogod Center on Aging, Mayo Clinic, 200 First Street SW, Rochester, MN 55905, USA
| | - Ming Xu
- Robert and Arlene Kogod Center on Aging, Mayo Clinic, 200 First Street SW, Rochester, MN 55905, USA
| | - Christine Inman
- Robert and Arlene Kogod Center on Aging, Mayo Clinic, 200 First Street SW, Rochester, MN 55905, USA
| | - Allyson K Palmer
- Robert and Arlene Kogod Center on Aging, Mayo Clinic, 200 First Street SW, Rochester, MN 55905, USA
| | - Marissa Schafer
- Robert and Arlene Kogod Center on Aging, Mayo Clinic, 200 First Street SW, Rochester, MN 55905, USA
| | - Moritz Weigl
- Robert and Arlene Kogod Center on Aging, Mayo Clinic, 200 First Street SW, Rochester, MN 55905, USA
| | - Yuji Ikeno
- The Barshop Institute for Longevity and Aging Studies, San Antonio, Department of Pathology, The University of Texas Health Science Center at San Antonio, Research Service, Audie L. Murphy VA Hospital (STVHCS), San Antonio, TX 78229, USA
| | - Terry C Burns
- Departments of Neurologic Surgery and Neuroscience, Mayo Clinic, 200 First Street SW, Rochester, MN 55905, USA
| | - João F Passos
- Institute for Cell and Molecular Biosciences, Newcastle University Institute for Ageing, Campus for Ageing and Vitality, Newcastle upon Tyne NE4 5PL, UK; Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN 55905, USA
| | - Thomas von Zglinicki
- Institute for Cell and Molecular Biosciences, Newcastle University Institute for Ageing, Campus for Ageing and Vitality, Newcastle upon Tyne NE4 5PL, UK; Near East University, Arts and Sciences Faculty, Molecular Biology and Genetics, Nicosia, North Cyprus POB 99138 Mersin 10, Turkey
| | - James L Kirkland
- Robert and Arlene Kogod Center on Aging, Mayo Clinic, 200 First Street SW, Rochester, MN 55905, USA.
| | - Diana Jurk
- Institute for Cell and Molecular Biosciences, Newcastle University Institute for Ageing, Campus for Ageing and Vitality, Newcastle upon Tyne NE4 5PL, UK; Robert and Arlene Kogod Center on Aging, Mayo Clinic, 200 First Street SW, Rochester, MN 55905, USA; Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN 55905, USA.
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23
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Ogrodnik M, Zhu Y, Langhi LG, Tchkonia T, Krüger P, Fielder E, Victorelli S, Ruswhandi RA, Giorgadze N, Pirtskhalava T, Podgorni O, Enikolopov G, Johnson KO, Xu M, Inman C, Palmer AK, Schafer M, Weigl M, Ikeno Y, Burns TC, Passos JF, von Zglinicki T, Kirkland JL, Jurk D. Obesity-Induced Cellular Senescence Drives Anxiety and Impairs Neurogenesis. Cell Metab 2019; 29:1233. [PMID: 31067450 PMCID: PMC6509279 DOI: 10.1016/j.cmet.2019.01.013] [Citation(s) in RCA: 65] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/02/2022]
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Abstract
Cell senescence is a driver of ageing, frailty, age-associated disease and functional decline. In oncology, tumour cell senescence may contribute to the effect of adjuvant therapies, as it blocks tumour growth. However, this is frequently incomplete, and tumour cells that recover from senescence may gain a more stem-like state with increased proliferative potential. This might be exaggerated by the induction of senescence in the surrounding niche cells. Finally, senescence will spread through bystander effects, possibly overwhelming the capacity of the immune system to ablate senescent cells. This induces a persistent system-wide senescent cell accumulation, which we hypothesize is the cause for the premature frailty, multi-morbidity and increased mortality in cancer survivors. Senolytics, drugs that selectively kill senescent cells, have been developed recently and have been proposed as second-line adjuvant tumour therapy. Similarly, by blocking accelerated senescence following therapy, senolytics might prevent and potentially even revert premature frailty in cancer survivors. Adjuvant senostatic interventions, which suppress senescence-associated bystander signalling, might also have therapeutic potential. This becomes pertinent because treatments that are senostatic in vitro (e.g. dietary restriction mimetics) persistently reduce numbers of senescent cells in vivo, i.e. act as net senolytics in immunocompetent hosts.
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Affiliation(s)
- Susan Short
- Leeds Institute of Cancer and Pathology, Wellcome Trust Brenner Building, St James's University Hospital, Beckett St, Leeds LS9 7TF, UK
| | - Edward Fielder
- Newcastle University Institute for Ageing, Institute for Cell and Molecular Biology, Campus for Ageing and Vitality, Newcastle University, Newcastle upon Tyne NE4 5PL, UK
| | - Satomi Miwa
- Newcastle University Institute for Ageing, Institute for Cell and Molecular Biology, Campus for Ageing and Vitality, Newcastle University, Newcastle upon Tyne NE4 5PL, UK
| | - Thomas von Zglinicki
- Newcastle University Institute for Ageing, Institute for Cell and Molecular Biology, Campus for Ageing and Vitality, Newcastle University, Newcastle upon Tyne NE4 5PL, UK.
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25
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Roger M, Fullard N, Costello L, Bradbury S, Markiewicz E, O'Reilly S, Darling N, Ritchie P, Määttä A, Karakesisoglou I, Nelson G, von Zglinicki T, Dicolandrea T, Isfort R, Bascom C, Przyborski S. Bioengineering the microanatomy of human skin. J Anat 2019; 234:438-455. [PMID: 30740672 PMCID: PMC6422806 DOI: 10.1111/joa.12942] [Citation(s) in RCA: 64] [Impact Index Per Article: 12.8] [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] [Accepted: 01/07/2019] [Indexed: 12/12/2022] Open
Abstract
Recreating the structure of human tissues in the laboratory is valuable for fundamental research, testing interventions, and reducing the use of animals. Critical to the use of such technology is the ability to produce tissue models that accurately reproduce the microanatomy of the native tissue. Current artificial cell‐based skin systems lack thorough characterisation, are not representative of human skin, and can show variation. In this study, we have developed a novel full thickness model of human skin comprised of epidermal and dermal compartments. Using an inert porous scaffold, we created a dermal construct using human fibroblasts that secrete their own extracellular matrix proteins, which avoids the use of animal‐derived materials. The dermal construct acts as a foundation upon which epidermal keratinocytes were seeded and differentiated into a stratified keratinised epithelium. In‐depth morphological analyses of the model demonstrated very close similarities with native human skin. Extensive immunostaining and electron microscopy analysis revealed ultrastructural details such as keratohyalin granules and lamellar bodies within the stratum granulosum, specialised junctional complexes, and the presence of a basal lamina. These features reflect the functional characteristics and barrier properties of the skin equivalent. Robustness and reproducibility of in vitro models are important attributes in experimental practice, and we demonstrate the consistency of the skin construct between different users. In summary, a new model of full thickness human skin has been developed that possesses microanatomical features reminiscent of native tissue. This skin model platform will be of significant interest to scientists researching the structure and function of human skin.
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Affiliation(s)
- Mathilde Roger
- Department of Biosciences, Durham University, Durham, UK
| | - Nicola Fullard
- Department of Biosciences, Durham University, Durham, UK
| | - Lydia Costello
- Department of Biosciences, Durham University, Durham, UK
| | | | - Ewa Markiewicz
- Department of Biosciences, Durham University, Durham, UK
| | - Steven O'Reilly
- Department of Health and Life Sciences, Northumbria University, Newcastle, UK
| | - Nicole Darling
- Department of Biosciences, Durham University, Durham, UK
| | - Pamela Ritchie
- Department of Biosciences, Durham University, Durham, UK
| | - Arto Määttä
- Department of Biosciences, Durham University, Durham, UK
| | | | - Glyn Nelson
- Institute for Ageing and Health, University of Newcastle, Newcastle, UK
| | | | | | - Robert Isfort
- Mason Business Centre, Procter & Gamble, Mason, Cincinnati, OH, USA
| | - Charles Bascom
- Mason Business Centre, Procter & Gamble, Mason, Cincinnati, OH, USA
| | - Stefan Przyborski
- Department of Biosciences, Durham University, Durham, UK.,Reprocell Europe, Sedgefield, UK
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26
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da Silva PFL, Ogrodnik M, Kucheryavenko O, Glibert J, Miwa S, Cameron K, Ishaq A, Saretzki G, Nagaraja‐Grellscheid S, Nelson G, von Zglinicki T. The bystander effect contributes to the accumulation of senescent cells in vivo. Aging Cell 2019; 18:e12848. [PMID: 30462359 PMCID: PMC6351849 DOI: 10.1111/acel.12848] [Citation(s) in RCA: 136] [Impact Index Per Article: 27.2] [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: 02/28/2018] [Revised: 08/10/2018] [Accepted: 09/02/2018] [Indexed: 12/14/2022] Open
Abstract
Senescent cells accumulate with age in multiple tissues and may cause age-associated disease and functional decline. In vitro, senescent cells induce senescence in bystander cells. To see how important this bystander effect may be for accumulation of senescent cells in vivo, we xenotransplanted senescent cells into skeletal muscle and skin of immunocompromised NSG mice. 3 weeks after the last transplantation, mouse dermal fibroblasts and myofibres displayed multiple senescence markers in the vicinity of transplanted senescent cells, but not where non-senescent or no cells were injected. Adjacent to injected senescent cells, the magnitude of the bystander effect was similar to the increase in senescence markers in myofibres between 8 and 32 months of age. The age-associated increase of senescence markers in muscle correlated with fibre thinning, a widely used marker of muscle aging and sarcopenia. Senescent cell transplantation resulted in borderline induction of centrally nucleated fibres and no significant thinning, suggesting that myofibre aging might be a delayed consequence of senescence-like signalling. To assess the relative importance of the bystander effect versus cell-autonomous senescence, we compared senescent hepatocyte frequencies in livers of wild-type and NSG mice under ad libitum and dietary restricted feeding. This enabled us to approximate cell-autonomous and bystander-driven senescent cell accumulation as well as the impact of immunosurveillance separately. The results suggest a significant impact of the bystander effect for accumulation of senescent hepatocytes in liver and indicate that senostatic interventions like dietary restriction may act as senolytics in immunocompetent animals.
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Affiliation(s)
- Paulo F. L. da Silva
- The ABC – Newcastle University Ageing Biology CentreInstitute for Cell and Molecular BiologyCampus for Ageing and VitalityNewcastle UniversityNewcastle upon TyneUK
- Present address:
Institute for Genome Stability in Ageing and DiseaseCologne Excellence Cluster for Cellular Stress Responses in Aging‐Associated Diseases (CECAD)University of CologneJoseph‐Stelzmann‐Str. 26Cologne50931Germany
| | - Mikolaj Ogrodnik
- The ABC – Newcastle University Ageing Biology CentreInstitute for Cell and Molecular BiologyCampus for Ageing and VitalityNewcastle UniversityNewcastle upon TyneUK
| | - Olena Kucheryavenko
- The ABC – Newcastle University Ageing Biology CentreInstitute for Cell and Molecular BiologyCampus for Ageing and VitalityNewcastle UniversityNewcastle upon TyneUK
- Present address:
Federal Institute for Risk AssessmentMax‐Dohrn‐Str. 8‐10Berlin10589Germany
| | - Julien Glibert
- The ABC – Newcastle University Ageing Biology CentreInstitute for Cell and Molecular BiologyCampus for Ageing and VitalityNewcastle UniversityNewcastle upon TyneUK
| | - Satomi Miwa
- The ABC – Newcastle University Ageing Biology CentreInstitute for Cell and Molecular BiologyCampus for Ageing and VitalityNewcastle UniversityNewcastle upon TyneUK
| | - Kerry Cameron
- The ABC – Newcastle University Ageing Biology CentreInstitute for Cell and Molecular BiologyCampus for Ageing and VitalityNewcastle UniversityNewcastle upon TyneUK
| | - Abbas Ishaq
- The ABC – Newcastle University Ageing Biology CentreInstitute for Cell and Molecular BiologyCampus for Ageing and VitalityNewcastle UniversityNewcastle upon TyneUK
| | - Gabriele Saretzki
- The ABC – Newcastle University Ageing Biology CentreInstitute for Cell and Molecular BiologyCampus for Ageing and VitalityNewcastle UniversityNewcastle upon TyneUK
| | - Sushma Nagaraja‐Grellscheid
- Department of BiosciencesDurham UniversityDurhamUK
- Present address:
Computational Biology UnitDepartment of BiosciencesUniversity of BergenBergen5006Norway
| | - Glyn Nelson
- The ABC – Newcastle University Ageing Biology CentreInstitute for Cell and Molecular BiologyCampus for Ageing and VitalityNewcastle UniversityNewcastle upon TyneUK
| | - Thomas von Zglinicki
- The ABC – Newcastle University Ageing Biology CentreInstitute for Cell and Molecular BiologyCampus for Ageing and VitalityNewcastle UniversityNewcastle upon TyneUK
- Arts and Sciences Faculty, Molecular Biology and GeneticsNear East UniversityMersinTurkey
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27
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Ishaq A, Dufour D, Cameron K, von Zglinicki T, Saretzki G. Metabolic memory of dietary restriction ameliorates DNA damage and adipocyte size in mouse visceral adipose tissue. Exp Gerontol 2018; 113:228-236. [PMID: 30312736 DOI: 10.1016/j.exger.2018.10.008] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2018] [Revised: 09/24/2018] [Accepted: 10/08/2018] [Indexed: 11/30/2022]
Abstract
Dietary restriction (DR) is thought to exert its beneficial effects on healthspan at least partially by a senolytic and senostatic action, i.e. by reducing frequencies of cells with markers of DNA damage and senescence in multiple tissues. Due to its importance in metabolic and inflammation regulation, fat is a prime tissue for health span determination as well as a prime target for DR. We aimed to determine here whether the beneficial effects of DR would be retained over a subsequent period of ad libitum (AL) feeding. Male mice were kept under either 40% DR or AL feeding regimes from 3 to 12 months of age and then either switched back to the opposite feeding regimen or kept in the same state for another 3 months. Visceral adipose tissue from 4 to 5 mice per group for all conditions was analysed for markers of senescence (adipocyte size, γH2A.X, p16, p21) and inflammation (e.g. IL-6, TNFα, IL-1β) using immuno-staining or qPCR. Macrophages were detected by immunohistochemistry. We found that both 9 and 12 months DR (long term) as well as 3 month (short term, mid-life onset) DR reduced the number of cells harbouring DNA damage and adipocyte size (area and perimeter) in visceral adipocytes with similar efficiency. Importantly, beneficial health markers induced by DR such as small adipocyte size and low DNA damage were maintained for at least 3 month after termination of DR, demonstrating that the previously identified 'metabolic memory' of the DR state in male mice extends to senescence markers in visceral fat.
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Affiliation(s)
- Abbas Ishaq
- The Ageing Biology Centre, Newcastle Institute for Ageing, Institute for Cell and Molecular Biosciences, Campus of Ageing and Vitality, Newcastle upon Tyne, UK
| | - Damien Dufour
- The Ageing Biology Centre, Newcastle Institute for Ageing, Institute for Cell and Molecular Biosciences, Campus of Ageing and Vitality, Newcastle upon Tyne, UK
| | - Kerry Cameron
- The Ageing Biology Centre, Newcastle Institute for Ageing, Institute for Cell and Molecular Biosciences, Campus of Ageing and Vitality, Newcastle upon Tyne, UK
| | - Thomas von Zglinicki
- The Ageing Biology Centre, Newcastle Institute for Ageing, Institute for Cell and Molecular Biosciences, Campus of Ageing and Vitality, Newcastle upon Tyne, UK
| | - Gabriele Saretzki
- The Ageing Biology Centre, Newcastle Institute for Ageing, Institute for Cell and Molecular Biosciences, Campus of Ageing and Vitality, Newcastle upon Tyne, UK.
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Nelson G, Kucheryavenko O, Wordsworth J, von Zglinicki T. The senescent bystander effect is caused by ROS-activated NF-κB signalling. Mech Ageing Dev 2018; 170:30-36. [PMID: 28837845 PMCID: PMC5861994 DOI: 10.1016/j.mad.2017.08.005] [Citation(s) in RCA: 143] [Impact Index Per Article: 23.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2017] [Revised: 07/13/2017] [Accepted: 08/14/2017] [Indexed: 12/27/2022]
Abstract
Cell senescence is an important driver of the ageing process. The accumulation of senescent cells in tissues is accelerated by stress signals from senescent cells that induce DNA damage and ultimately senescence in bystander cells. We examine here the interplay of senescence-associated mitochondrial dysfunction (SAMD)-driven production of reactive oxygen species (ROS) and senescence-associated secretory phenotype (SASP) in causing the bystander effect. We show that in various modes of fibroblast senescence ROS are necessary and sufficient to activate the transcription factor nuclear factor kappa-light-chain-enhancer of activated B cells (NF-κB), which facilitates a large part of the SASP. This ROS-NF-κB axis causes the DNA damage response in bystander cells. Cytokines IL-6 and IL-8 are major components of the pro-inflammatory SASP in senescent fibroblasts. However, their activation in senescence is only partially controlled by NF-κB, and they are thus not strong candidates as intercellular mediators of the bystander effect as mediated by the ROS-NF-κB axis.
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Affiliation(s)
- Glyn Nelson
- The Ageing Biology Centre, Campus for Ageing and Vitality, Newcastle University, Newcastle upon Tyne NE4 5PL, UK
| | - Olena Kucheryavenko
- The Ageing Biology Centre, Campus for Ageing and Vitality, Newcastle University, Newcastle upon Tyne NE4 5PL, UK
| | - James Wordsworth
- The Ageing Biology Centre, Campus for Ageing and Vitality, Newcastle University, Newcastle upon Tyne NE4 5PL, UK
| | - Thomas von Zglinicki
- The Ageing Biology Centre, Campus for Ageing and Vitality, Newcastle University, Newcastle upon Tyne NE4 5PL, UK.
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Marioni RE, Harris SE, Shah S, McRae AF, von Zglinicki T, Martin-Ruiz C, Wray NR, Visscher PM, Deary IJ. The epigenetic clock and telomere length are independently associated with chronological age and mortality. Int J Epidemiol 2018; 45:424-432. [PMID: 27075770 PMCID: PMC4864882 DOI: 10.1093/ije/dyw041] [Citation(s) in RCA: 167] [Impact Index Per Article: 27.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/18/2015] [Indexed: 12/27/2022] Open
Abstract
BACKGROUND Telomere length and DNA methylation have been proposed as biological clock measures that track chronological age. Whether they change in tandem, or contribute independently to the prediction of chronological age, is not known. METHODS We address these points using data from two Scottish cohorts: the Lothian Birth Cohorts of 1921 (LBC1921) and 1936 (LBC1936). Telomere length and epigenetic clock estimates from DNA methylation were measured in 920 LBC1936 participants (ages 70, 73 and 76 years) and in 414 LBC1921 participants (ages 79, 87 and 90 years). RESULTS The epigenetic clock changed over time at roughly the same rate as chronological age in both cohorts. Telomere length decreased at 48-67 base pairs per year on average. Weak, non-significant correlations were found between epigenetic clock estimates and telomere length. Telomere length explained 6.6% of the variance in age in LBC1921, the epigenetic clock explained 10.0%, and combined they explained 17.3% (allP< 1 × 10-7). Corresponding figures for the LBC1936 cohort were 14.3%, 11.7% and 19.5% (allP< 1 × 10-12). In a combined cohorts analysis, the respective estimates were 2.8%, 28.5% and 29.5%. Also in a combined cohorts analysis, a one standard deviation increase in baseline epigenetic age was linked to a 22% increased mortality risk (P= 2.6 × 10-4) whereas, in the same model, a one standard deviation increase in baseline telomere length was independently linked to an 11% decreased mortality risk (P= 0.06). CONCLUSIONS These results suggest that telomere length and epigenetic clock estimates are independent predictors of chronological age and mortality risk.
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Affiliation(s)
- Riccardo E Marioni
- Queensland Brain Institute, University of Queensland, Brisbane, QLD, Australia Centre for Cognitive Ageing and Cognitive Epidemiology, University of Edinburgh, Edinburgh, UK Medical Genetics Section, Centre for Genomic and Experimental Medicine, Institute of Genetics and Molecular Medicine, University of Edinburgh, Edinburgh, UK
| | - Sarah E Harris
- Centre for Cognitive Ageing and Cognitive Epidemiology, University of Edinburgh, Edinburgh, UK Medical Genetics Section, Centre for Genomic and Experimental Medicine, Institute of Genetics and Molecular Medicine, University of Edinburgh, Edinburgh, UK
| | - Sonia Shah
- Queensland Brain Institute, University of Queensland, Brisbane, QLD, Australia The University of Queensland Diamantina Institute, Translational Research Institute, University of Queensland, Brisbane, QLD, Australia
| | - Allan F McRae
- Queensland Brain Institute, University of Queensland, Brisbane, QLD, Australia The University of Queensland Diamantina Institute, Translational Research Institute, University of Queensland, Brisbane, QLD, Australia
| | - Thomas von Zglinicki
- Institute for Cell & Molecular Biosciences, Newcastle University Institute for Ageing, University of Newcastle, Newcastle, UK
| | - Carmen Martin-Ruiz
- Institute of Neurosciences, NIHR Newcastle Biomedical Research Centre & Unit, Newcastle University Institute for Ageing, University of Newcastle, Newcastle, UK
| | - Naomi R Wray
- Queensland Brain Institute, University of Queensland, Brisbane, QLD, Australia
| | - Peter M Visscher
- Queensland Brain Institute, University of Queensland, Brisbane, QLD, Australia Centre for Cognitive Ageing and Cognitive Epidemiology, University of Edinburgh, Edinburgh, UK The University of Queensland Diamantina Institute, Translational Research Institute, University of Queensland, Brisbane, QLD, Australia
| | - Ian J Deary
- Department of Psychology, University of Edinburgh, Edinburgh, UK
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Marioni RE, Harris SE, Shah S, McRae AF, von Zglinicki T, Martin-Ruiz C, Wray NR, Visscher PM, Deary IJ. The epigenetic clock and telomere length are independently associated with chronological age and mortality. Int J Epidemiol 2017; 47:356. [PMID: 29190382 PMCID: PMC5837660 DOI: 10.1093/ije/dyx233] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/04/2022] Open
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31
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Granic A, Davies K, Martin-Ruiz C, Jagger C, Kirkwood TBL, von Zglinicki T, Aihie Sayer A. Grip strength and inflammatory biomarker profiles in very old adults. Age Ageing 2017; 46:976-982. [PMID: 28541423 PMCID: PMC5860623 DOI: 10.1093/ageing/afx088] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2016] [Accepted: 05/11/2017] [Indexed: 01/06/2023] Open
Abstract
Background weak grip strength (GS) and chronic inflammation have been implicated in the aetiology of sarcopenia in older adults. Given the interrelationships between inflammatory biomarkers, a summary variable may provide better insight into the relationship between inflammation and muscle strength. This approach has not been investigated in very old adults (aged ≥85) who are at highest risk of muscle weakness. Methods we used mixed models to explore the prospective association between GS over 5 years in 845 participants in the Newcastle 85+ Study, and inflammatory components identified by principal component analysis (PCA). Cut-offs of ≤27 kg (men) and ≤16 (women) were used to define sub-cohorts with weak and normal GS at each assessment. Results PCA identified three components, which explained 70% of the total variance in seven baseline biomarkers. Basal interleukin-6 (IL-6) and tumour necrosis factor (TNF-α) had the highest loadings on Component 1; stimulated IL-6 and TNF-α and homocysteine the highest on Component 2; high-sensitivity C-reactive protein (hsCRP) loaded positively and albumin negatively to Component 3. In adjusted mixed models, only Component 3 was associated with GS. One SD increase of Component 3 was associated with a 0.41 kg lower GS initially (P = 0.03) in all participants, but not with GS decline over time. Similar conclusions held for those in the weak and normal GS sub-cohorts. Conclusion an inflammatory profile including hsCRP and albumin was independently associated with baseline GS. Future studies linking inflammatory profiles and muscle strength are needed to corroborate these findings in older adults.
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Affiliation(s)
- Antoneta Granic
- Institute of Neuroscience, Newcastle University, Newcastle upon Tyne, UK
- NIHR Newcastle Biomedical Research Centre, Newcastle Universityand Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, UK
- Newcastle University Institute for Ageing, Newcastle upon Tyne, UK
| | - Karen Davies
- Institute of Neuroscience, Newcastle University, Newcastle upon Tyne, UK
- NIHR Newcastle Biomedical Research Centre, Newcastle Universityand Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, UK
- Newcastle University Institute for Ageing, Newcastle upon Tyne, UK
| | - Carmen Martin-Ruiz
- Institute of Neuroscience, Newcastle University, Newcastle upon Tyne, UK
- Newcastle University Institute for Ageing, Newcastle upon Tyne, UK
- Newcastle University Ageing Biology Centre, Newcastle upon Tyne, UK
| | - Carol Jagger
- Newcastle University Institute for Ageing, Newcastle upon Tyne, UK
- Institute of Health & Society, Newcastle University, Newcastle upon Tyne, UK
| | - Thomas B L Kirkwood
- Newcastle University Institute for Ageing, Newcastle upon Tyne, UK
- Institute for Cell and Molecular Biosciences, Newcastle University, Newcastle upon Tyne, UK
| | - Thomas von Zglinicki
- Newcastle University Institute for Ageing, Newcastle upon Tyne, UK
- Newcastle University Ageing Biology Centre, Newcastle upon Tyne, UK
- Institute for Cell and Molecular Biosciences, Newcastle University, Newcastle upon Tyne, UK
| | - Avan Aihie Sayer
- Institute of Neuroscience, Newcastle University, Newcastle upon Tyne, UK
- NIHR Newcastle Biomedical Research Centre, Newcastle Universityand Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, UK
- Newcastle University Institute for Ageing, Newcastle upon Tyne, UK
- MRC Lifecourse Epidemiology Unit, Faculty of Medicine, University of Southampton, Southampton, UK
- Academic Geriatric Medicine, University of Southampton, Southampton, UK
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32
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Carroll B, Nelson G, Rabanal-Ruiz Y, Kucheryavenko O, Dunhill-Turner NA, Chesterman CC, Zahari Q, Zhang T, Conduit SE, Mitchell CA, Maddocks ODK, Lovat P, von Zglinicki T, Korolchuk VI. Persistent mTORC1 signaling in cell senescence results from defects in amino acid and growth factor sensing. J Cell Biol 2017; 216:1949-1957. [PMID: 28566325 PMCID: PMC5496614 DOI: 10.1083/jcb.201610113] [Citation(s) in RCA: 71] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2016] [Revised: 03/05/2017] [Accepted: 04/19/2017] [Indexed: 12/13/2022] Open
Abstract
Mammalian target of rapamycin complex 1 (mTORC1) and cell senescence are intimately linked to each other and to organismal aging. Inhibition of mTORC1 is the best-known intervention to extend lifespan, and recent evidence suggests that clearance of senescent cells can also improve health and lifespan. Enhanced mTORC1 activity drives characteristic phenotypes of senescence, although the underlying mechanisms responsible for increased activity are not well understood. We have identified that in human fibroblasts rendered senescent by stress, replicative exhaustion, or oncogene activation, mTORC1 is constitutively active and resistant to serum and amino acid starvation. This is driven in part by depolarization of senescent cell plasma membrane, which leads to primary cilia defects and a resultant failure to inhibit growth factor signaling. Further, increased autophagy and high levels of intracellular amino acids may act to support mTORC1 activity in starvation conditions. Interventions to correct these phenotypes restore sensitivity to the mTORC1 signaling pathway and cause death, indicating that persistent signaling supports senescent cell survival.
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Affiliation(s)
- Bernadette Carroll
- Institute for Cell and Molecular Biosciences, Newcastle University, Newcastle upon Tyne, UK
| | - Glyn Nelson
- Institute for Cell and Molecular Biosciences, Newcastle University, Newcastle upon Tyne, UK
| | - Yoana Rabanal-Ruiz
- Institute for Cell and Molecular Biosciences, Newcastle University, Newcastle upon Tyne, UK
| | - Olena Kucheryavenko
- Institute for Cell and Molecular Biosciences, Newcastle University, Newcastle upon Tyne, UK
| | | | - Charlotte C Chesterman
- Institute for Cell and Molecular Biosciences, Newcastle University, Newcastle upon Tyne, UK
| | - Qabil Zahari
- Institute for Cell and Molecular Biosciences, Newcastle University, Newcastle upon Tyne, UK
| | - Tong Zhang
- Wolfson Wohl Cancer Research Centre, Institute of Cancer Sciences, University of Glasgow, Glasgow, Scotland, UK
| | - Sarah E Conduit
- Cancer Program, Monash Biomedicine Discovery Institute, Department of Biochemistry and Molecular Biology, Monash University, Clayton, Victoria, Australia
| | - Christina A Mitchell
- Cancer Program, Monash Biomedicine Discovery Institute, Department of Biochemistry and Molecular Biology, Monash University, Clayton, Victoria, Australia
| | - Oliver D K Maddocks
- Wolfson Wohl Cancer Research Centre, Institute of Cancer Sciences, University of Glasgow, Glasgow, Scotland, UK
| | - Penny Lovat
- Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne, UK
| | - Thomas von Zglinicki
- Institute for Cell and Molecular Biosciences, Newcastle University, Newcastle upon Tyne, UK
| | - Viktor I Korolchuk
- Institute for Cell and Molecular Biosciences, Newcastle University, Newcastle upon Tyne, UK
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Korolchuk VI, Miwa S, Carroll B, von Zglinicki T. Mitochondria in Cell Senescence: Is Mitophagy the Weakest Link? EBioMedicine 2017; 21:7-13. [PMID: 28330601 PMCID: PMC5514379 DOI: 10.1016/j.ebiom.2017.03.020] [Citation(s) in RCA: 221] [Impact Index Per Article: 31.6] [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: 02/07/2017] [Revised: 03/10/2017] [Accepted: 03/13/2017] [Indexed: 01/30/2023] Open
Abstract
Cell senescence is increasingly recognized as a major contributor to the loss of health and fitness associated with aging. Senescent cells accumulate dysfunctional mitochondria; oxidative phosphorylation efficiency is decreased and reactive oxygen species production is increased. In this review we will discuss how the turnover of mitochondria (a term referred to as mitophagy) is perturbed in senescence contributing to mitochondrial accumulation and Senescence-Associated Mitochondrial Dysfunction (SAMD). We will further explore the subsequent cellular consequences; in particular SAMD appears to be necessary for at least part of the specific Senescence-Associated Secretory Phenotype (SASP) and may be responsible for tissue-level metabolic dysfunction that is associated with aging and obesity. Understanding the complex interplay between these major senescence-associated phenotypes will help to select and improve interventions that prolong healthy life in humans. SEARCH STRATEGY AND SELECTION CRITERIA Data for this review were identified by searches of MEDLINE, PubMed, and references from relevant articles using the search terms "mitochondria AND senescence", "(autophagy OR mitophagy) AND senescence", "mitophagy AND aging" and related terms. Additionally, searches were performed based on investigator names. Abstracts and reports from meetings were excluded. Articles published in English between 1995 and 2017 were included. Articles were selected according to their relevance to the topic as perceived by the authors.
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Affiliation(s)
- Viktor I Korolchuk
- The ABC - Newcastle University Ageing Biology Centre, Newcastle University Institute for Ageing, UK
| | - Satomi Miwa
- The ABC - Newcastle University Ageing Biology Centre, Newcastle University Institute for Ageing, UK
| | - Bernadette Carroll
- The ABC - Newcastle University Ageing Biology Centre, Newcastle University Institute for Ageing, UK
| | - Thomas von Zglinicki
- The ABC - Newcastle University Ageing Biology Centre, Newcastle University Institute for Ageing, UK.
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Ogrodnik M, Miwa S, Tchkonia T, Tiniakos D, Wilson CL, Lahat A, Day CP, Burt A, Palmer A, Anstee QM, Grellscheid SN, Hoeijmakers JHJ, Barnhoorn S, Mann DA, Bird TG, Vermeij WP, Kirkland JL, Passos JF, von Zglinicki T, Jurk D. Cellular senescence drives age-dependent hepatic steatosis. Nat Commun 2017; 8:15691. [PMID: 28608850 PMCID: PMC5474745 DOI: 10.1038/ncomms15691] [Citation(s) in RCA: 582] [Impact Index Per Article: 83.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2016] [Accepted: 04/20/2017] [Indexed: 02/06/2023] Open
Abstract
The incidence of non-alcoholic fatty liver disease (NAFLD) increases with age. Cellular senescence refers to a state of irreversible cell-cycle arrest combined with the secretion of proinflammatory cytokines and mitochondrial dysfunction. Senescent cells contribute to age-related tissue degeneration. Here we show that the accumulation of senescent cells promotes hepatic fat accumulation and steatosis. We report a close correlation between hepatic fat accumulation and markers of hepatocyte senescence. The elimination of senescent cells by suicide gene-meditated ablation of p16Ink4a-expressing senescent cells in INK-ATTAC mice or by treatment with a combination of the senolytic drugs dasatinib and quercetin (D+Q) reduces overall hepatic steatosis. Conversely, inducing hepatocyte senescence promotes fat accumulation in vitro and in vivo. Mechanistically, we show that mitochondria in senescent cells lose the ability to metabolize fatty acids efficiently. Our study demonstrates that cellular senescence drives hepatic steatosis and elimination of senescent cells may be a novel therapeutic strategy to reduce steatosis.
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Affiliation(s)
- Mikolaj Ogrodnik
- Newcastle University Institute for Ageing, Institute for Cell and Molecular Biosciences, Campus for Ageing and Vitality, Newcastle University, Newcastle upon Tyne NE4 5PL, UK
| | - Satomi Miwa
- Newcastle University Institute for Ageing, Institute for Cell and Molecular Biosciences, Campus for Ageing and Vitality, Newcastle University, Newcastle upon Tyne NE4 5PL, UK
| | - Tamar Tchkonia
- Robert and Arlene Kogod Center on Aging, Mayo Clinic, 200 First Street SW, Rochester, Minnesota 55905, USA
| | - Dina Tiniakos
- Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne NE2 4HH, UK
- Department of Pathology, Aretaieio Hospital, Medical School, National & Kapodistrian University of Athens, Athens 11528, Greece
| | - Caroline L. Wilson
- Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne NE2 4HH, UK
| | - Albert Lahat
- Department of Biosciences, Durham University, Durham DH1 3LE, UK
| | - Christoper P. Day
- Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne NE2 4HH, UK
- Liver Unit, Newcastle upon Tyne Hospitals NHS Trust, Freeman Hospital, Newcastle upon Tyne NE7 7DN, UK
| | - Alastair Burt
- Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne NE2 4HH, UK
- The University of Adelaide, Faculty of Health Science, North Terrace, Adelaide, South Australia 5005, Australia
| | - Allyson Palmer
- Robert and Arlene Kogod Center on Aging, Mayo Clinic, 200 First Street SW, Rochester, Minnesota 55905, USA
| | - Quentin M. Anstee
- Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne NE2 4HH, UK
| | | | - Jan H J. Hoeijmakers
- Department of Molecular Genetics, Erasmus University Medical Center, PO Box 2040, Rotterdam 3000 CA, The Netherlands
- CECAD Forschungszentrum, Universität zu Köln, Joseph-Stelzmann-Straße 26, Köln 50931, Germany
| | - Sander Barnhoorn
- Department of Molecular Genetics, Erasmus University Medical Center, PO Box 2040, Rotterdam 3000 CA, The Netherlands
| | - Derek A. Mann
- Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne NE2 4HH, UK
| | - Thomas G. Bird
- MRC Centre for Inflammation Research, The Queen’s Medical Research Institute, University of Edinburgh, Edinburgh EH16 4TJ, UK
- Cancer Research UK Beatson Institute, Glasgow G61 1BD, UK
| | - Wilbert P. Vermeij
- Department of Molecular Genetics, Erasmus University Medical Center, PO Box 2040, Rotterdam 3000 CA, The Netherlands
| | - James L. Kirkland
- Robert and Arlene Kogod Center on Aging, Mayo Clinic, 200 First Street SW, Rochester, Minnesota 55905, USA
| | - João F. Passos
- Newcastle University Institute for Ageing, Institute for Cell and Molecular Biosciences, Campus for Ageing and Vitality, Newcastle University, Newcastle upon Tyne NE4 5PL, UK
| | - Thomas von Zglinicki
- Newcastle University Institute for Ageing, Institute for Cell and Molecular Biosciences, Campus for Ageing and Vitality, Newcastle University, Newcastle upon Tyne NE4 5PL, UK
| | - Diana Jurk
- Newcastle University Institute for Ageing, Institute for Cell and Molecular Biosciences, Campus for Ageing and Vitality, Newcastle University, Newcastle upon Tyne NE4 5PL, UK
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Affiliation(s)
- Roderick Skinner
- Department of Paediatric and Adolescent Haematology/Oncology, Great North Children's Hospital, Newcastle Upon Tyne Hospitals NHS Foundation Trust, Newcastle Upon Tyne, United Kingdom2Children's Haemopoietic Stem Cell Transplant Unit, Great North Children's Hospital, Newcastle Upon Tyne Hospitals NHS Foundation Trust, Newcastle Upon Tyne, United Kingdom3Northern Institute of Cancer Research, Newcastle University, Newcastle Upon Tyne, United Kingdom4Newcastle University Institute for Ageing, Newcastle University, Newcastle Upon Tyne, United Kingdom
| | - Thomas von Zglinicki
- Newcastle University Institute for Ageing, Newcastle University, Newcastle Upon Tyne, United Kingdom5Institute for Cell and Molecular Biosciences, Newcastle University, Newcastle Upon Tyne, United Kingdom
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Langie SAS, Cameron KM, Ficz G, Oxley D, Tomaszewski B, Gorniak JP, Maas LM, Godschalk RWL, van Schooten FJ, Reik W, von Zglinicki T, Mathers JC. The Ageing Brain: Effects on DNA Repair and DNA Methylation in Mice. Genes (Basel) 2017; 8:E75. [PMID: 28218666 PMCID: PMC5333064 DOI: 10.3390/genes8020075] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2016] [Revised: 02/02/2017] [Accepted: 02/07/2017] [Indexed: 12/15/2022] Open
Abstract
Base excision repair (BER) may become less effective with ageing resulting in accumulation of DNA lesions, genome instability and altered gene expression that contribute to age-related degenerative diseases. The brain is particularly vulnerable to the accumulation of DNA lesions; hence, proper functioning of DNA repair mechanisms is important for neuronal survival. Although the mechanism of age-related decline in DNA repair capacity is unknown, growing evidence suggests that epigenetic events (e.g., DNA methylation) contribute to the ageing process and may be functionally important through the regulation of the expression of DNA repair genes. We hypothesize that epigenetic mechanisms are involved in mediating the age-related decline in BER in the brain. Brains from male mice were isolated at 3-32 months of age. Pyrosequencing analyses revealed significantly increased Ogg1 methylation with ageing, which correlated inversely with Ogg1 expression. The reduced Ogg1 expression correlated with enhanced expression of methyl-CpG binding protein 2 and ten-eleven translocation enzyme 2. A significant inverse correlation between Neil1 methylation at CpG-site2 and expression was also observed. BER activity was significantly reduced and associated with increased 8-oxo-7,8-dihydro-2'-deoxyguanosine levels. These data indicate that Ogg1 and Neil1 expression can be epigenetically regulated, which may mediate the effects of ageing on DNA repair in the brain.
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Affiliation(s)
- Sabine A S Langie
- Centre for Ageing and Vitality, Human Nutrition Research Centre, Institute of Cellular Medicine, Newcastle University, Campus for Ageing and Vitality, Newcastle upon Tyne NE4 5PL, UK.
| | - Kerry M Cameron
- The Ageing Biology Centre and Institute for Cell and Molecular Biology, Newcastle University, Campus for Ageing and Vitality, Newcastle upon Tyne NE4 5PL, UK.
| | - Gabriella Ficz
- Barts Cancer Institute, Queen Mary University, London EC1M 6BQ, UK.
| | - David Oxley
- Mass Spectrometry Laboratory, Babraham Institute, Cambridge CB22 3AT, UK.
| | - Bartłomiej Tomaszewski
- Centre for Ageing and Vitality, Human Nutrition Research Centre, Institute of Cellular Medicine, Newcastle University, Campus for Ageing and Vitality, Newcastle upon Tyne NE4 5PL, UK.
| | - Joanna P Gorniak
- Centre for Ageing and Vitality, Human Nutrition Research Centre, Institute of Cellular Medicine, Newcastle University, Campus for Ageing and Vitality, Newcastle upon Tyne NE4 5PL, UK.
| | - Lou M Maas
- Department of Pharmacology & Toxicology, School for Nutrition and Translational Research in Metabolism (NUTRIM), Maastricht University, 6200 MD Maastricht, The Netherlands.
| | - Roger W L Godschalk
- Department of Pharmacology & Toxicology, School for Nutrition and Translational Research in Metabolism (NUTRIM), Maastricht University, 6200 MD Maastricht, The Netherlands.
| | - Frederik J van Schooten
- Department of Pharmacology & Toxicology, School for Nutrition and Translational Research in Metabolism (NUTRIM), Maastricht University, 6200 MD Maastricht, The Netherlands.
| | - Wolf Reik
- Epigenetics Programme, Babraham Institute, Cambridge CB22 3AT, UK.
- Wellcome Trust Sanger Institute, Hinxton CB10 1SA, UK.
| | - Thomas von Zglinicki
- The Ageing Biology Centre and Institute for Cell and Molecular Biology, Newcastle University, Campus for Ageing and Vitality, Newcastle upon Tyne NE4 5PL, UK.
| | - John C Mathers
- Centre for Ageing and Vitality, Human Nutrition Research Centre, Institute of Cellular Medicine, Newcastle University, Campus for Ageing and Vitality, Newcastle upon Tyne NE4 5PL, UK.
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Abstract
Neurons are exposed to high levels of DNA damage from both physiological and pathological sources. Neurons are post-mitotic and their loss cannot be easily recovered from; to cope with DNA damage a complex pathway called the DNA damage response (DDR) has evolved. This recognizes the damage, and through kinases such as ataxia-telangiectasia mutated (ATM) recruits and activates downstream factors that mediate either apoptosis or survival. This choice between these opposing outcomes integrates many inputs primarily through a number of key cross-road proteins, including ATM, p53, and p21. Evidence of re-entry into the cell-cycle by neurons can be seen in aging and diseases such as Alzheimer's disease. This aberrant cell-cycle re-entry is lethal and can lead to the apoptotic death of the neuron. Many downstream factors of the DDR promote cell-cycle arrest in response to damage and appear to protect neurons from apoptotic death. However, neurons surviving with a persistently activated DDR show all the features known from cell senescence; including metabolic dysregulation, mitochondrial dysfunction, and the hyper-production of pro-oxidant, pro-inflammatory and matrix-remodeling factors. These cells, termed senescence-like neurons, can negatively influence the extracellular environment and may promote induction of the same phenotype in surrounding cells, as well as driving aging and age-related diseases. Recently developed interventions targeting the DDR and/or the senescent phenotype in a range of non-neuronal tissues are being reviewed as they might become of therapeutic interest in neurodegenerative diseases.
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Affiliation(s)
- Edward Fielder
- The Ageing Biology Centre and Institute for Cell and Molecular Biology, Newcastle University, Newcastle Upon Tyne, UK
| | - Thomas von Zglinicki
- The Ageing Biology Centre and Institute for Cell and Molecular Biology, Newcastle University, Newcastle Upon Tyne, UK
| | - Diana Jurk
- The Ageing Biology Centre and Institute for Cell and Molecular Biology, Newcastle University, Newcastle Upon Tyne, UK
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von Zglinicki T, Varela-Nieto I, Brites D, Karagianni N, Ortolano S, Georgopoulos S, Cardoso AL, Novella S, Lepperdinger G, Trendelenburg AU, van Os R. Frailty in mouse ageing: A conceptual approach. Mech Ageing Dev 2016; 160:34-40. [DOI: 10.1016/j.mad.2016.07.004] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2016] [Revised: 07/11/2016] [Accepted: 07/15/2016] [Indexed: 01/21/2023]
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Miwa S, Czapiewski R, Wan T, Bell A, Hill KN, von Zglinicki T, Saretzki G. Decreased mTOR signalling reduces mitochondrial ROS in brain via accumulation of the telomerase protein TERT within mitochondria. Aging (Albany NY) 2016; 8:2551-2567. [PMID: 27777385 PMCID: PMC5115906 DOI: 10.18632/aging.101089] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [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: 08/25/2016] [Accepted: 10/02/2016] [Indexed: 01/11/2023]
Abstract
Telomerase in its canonical function maintains telomeres in dividing cells. In addition, the telomerase protein TERT has non-telomeric functions such as shuttling to mitochondria resulting in a decreased oxidative stress, DNA damage and apoptosis. TERT protein persists in adult neurons and can co-localise to mitochondria under various stress conditions. We show here that TERT expression decreased in mouse brain during aging while release of reactive oxygen species (ROS) from the mitochondrial electron transport chain increased. Dietary restriction (DR) caused accumulation of TERT protein in mouse brain mitochondria correlating to decreased ROS release and improved learning and spatial short-term memory. Decreased mTOR signalling is a mediator of DR. Accordingly, feeding mice with rapamycin increased brain mitochondrial TERT and reduced ROS release. Importantly, the beneficial effects of rapamycin on mitochondrial function were absent in brains and fibroblasts from first generation TERT -/- mice, and when TERT shuttling was inhibited by the Src kinase inhibitor bosutinib. Taken together, our data suggests that the mTOR signalling pathway impinges on the mitochondrial localisation of TERT protein, which might in turn contribute to the protection of the brain by DR or rapamycin against age-associated mitochondrial ROS increase and cognitive decline.
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Affiliation(s)
- Satomi Miwa
- Institute for Cell and Molecular Biosciences, Newcastle Institute for Ageing, Campus for Ageing and Vitality, Newcastle University, Newcastle upon Tyne, NE4 5PL, UK
| | - Rafal Czapiewski
- Institute for Cell and Molecular Biosciences, Newcastle Institute for Ageing, Campus for Ageing and Vitality, Newcastle University, Newcastle upon Tyne, NE4 5PL, UK
| | - Tengfei Wan
- Institute for Cell and Molecular Biosciences, Newcastle Institute for Ageing, Campus for Ageing and Vitality, Newcastle University, Newcastle upon Tyne, NE4 5PL, UK
| | - Amy Bell
- Institute for Cell and Molecular Biosciences, Newcastle Institute for Ageing, Campus for Ageing and Vitality, Newcastle University, Newcastle upon Tyne, NE4 5PL, UK
| | - Kirsten N. Hill
- Institute for Cell and Molecular Biosciences, Newcastle Institute for Ageing, Campus for Ageing and Vitality, Newcastle University, Newcastle upon Tyne, NE4 5PL, UK
| | - Thomas von Zglinicki
- Institute for Cell and Molecular Biosciences, Newcastle Institute for Ageing, Campus for Ageing and Vitality, Newcastle University, Newcastle upon Tyne, NE4 5PL, UK
| | - Gabriele Saretzki
- Institute for Cell and Molecular Biosciences, Newcastle Institute for Ageing, Campus for Ageing and Vitality, Newcastle University, Newcastle upon Tyne, NE4 5PL, UK
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40
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Hewitt G, Carroll B, Sarallah R, Correia-Melo C, Ogrodnik M, Nelson G, Otten EG, Manni D, Antrobus R, Morgan BA, von Zglinicki T, Jurk D, Seluanov A, Gorbunova V, Johansen T, Passos JF, Korolchuk VI. SQSTM1/p62 mediates crosstalk between autophagy and the UPS in DNA repair. Autophagy 2016; 12:1917-1930. [PMID: 27391408 PMCID: PMC5391493 DOI: 10.1080/15548627.2016.1210368] [Citation(s) in RCA: 110] [Impact Index Per Article: 13.8] [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] [Indexed: 02/04/2023] Open
Abstract
SQSTM1/p62 (sequestosome 1) selectively targets polyubiquitinated proteins for degradation via macroautophagy and the proteasome. Additionally, SQSTM1 shuttles between the cytoplasmic and nuclear compartments, although its role in the nucleus is relatively unknown. Here, we report that SQSTM1 dynamically associates with DNA damage foci (DDF) and regulates DNA repair. Upon induction of DNA damage SQSTM1 interacts with FLNA (filamin A), which has previously been shown to recruit DNA repair protein RAD51 (RAD51 recombinase) to double-strand breaks and facilitate homologous recombination (HR). SQSTM1 promotes proteasomal degradation of FLNA and RAD51 within the nucleus, resulting in reduced levels of nuclear RAD51 and slower DNA repair. SQSTM1 regulates the ratio between HR and nonhomologous end joining (NHEJ) by promoting the latter at the expense of the former. This SQSTM1-dependent mechanism mediates the effect of macroautophagy on DNA repair. Moreover, nuclear localization of SQSTM1 and its association with DDF increase with aging and are prevented by life-span-extending dietary restriction, suggesting that an imbalance in the mechanism identified here may contribute to aging and age-related diseases.
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Affiliation(s)
- Graeme Hewitt
- a Institute for Cell and Molecular Biosciences , Newcastle University , Newcastle upon Tyne , UK
| | - Bernadette Carroll
- a Institute for Cell and Molecular Biosciences , Newcastle University , Newcastle upon Tyne , UK
| | | | - Clara Correia-Melo
- a Institute for Cell and Molecular Biosciences , Newcastle University , Newcastle upon Tyne , UK
| | - Mikołaj Ogrodnik
- a Institute for Cell and Molecular Biosciences , Newcastle University , Newcastle upon Tyne , UK
| | - Glyn Nelson
- a Institute for Cell and Molecular Biosciences , Newcastle University , Newcastle upon Tyne , UK
| | - Elsje G Otten
- a Institute for Cell and Molecular Biosciences , Newcastle University , Newcastle upon Tyne , UK
| | - Diego Manni
- a Institute for Cell and Molecular Biosciences , Newcastle University , Newcastle upon Tyne , UK
| | - Robin Antrobus
- b Cambridge Institute for Medical Research , Cambridge University , Cambridge , UK
| | - Brian A Morgan
- a Institute for Cell and Molecular Biosciences , Newcastle University , Newcastle upon Tyne , UK
| | - Thomas von Zglinicki
- a Institute for Cell and Molecular Biosciences , Newcastle University , Newcastle upon Tyne , UK
| | - Diana Jurk
- a Institute for Cell and Molecular Biosciences , Newcastle University , Newcastle upon Tyne , UK
| | - Andrei Seluanov
- c Department of Biology , University of Rochester , Rochester , NY USA
| | - Vera Gorbunova
- c Department of Biology , University of Rochester , Rochester , NY USA
| | - Terje Johansen
- d Molecular Cancer Research Group , Department of Medical Biology , University of Tromsø - The Arctic University of Norway , Tromsø , Norway
| | - João F Passos
- a Institute for Cell and Molecular Biosciences , Newcastle University , Newcastle upon Tyne , UK
| | - Viktor I Korolchuk
- a Institute for Cell and Molecular Biosciences , Newcastle University , Newcastle upon Tyne , UK
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41
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Spyridopoulos I, Martin-Ruiz C, Hilkens C, Yadegarfar ME, Isaacs J, Jagger C, Kirkwood T, von Zglinicki T. CMV seropositivity and T-cell senescence predict increased cardiovascular mortality in octogenarians: results from the Newcastle 85+ study. Aging Cell 2016; 15:389-92. [PMID: 26696322 PMCID: PMC4783336 DOI: 10.1111/acel.12430] [Citation(s) in RCA: 82] [Impact Index Per Article: 10.3] [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] [Accepted: 11/08/2015] [Indexed: 12/14/2022] Open
Abstract
Although chronic infection with cytomegalovirus (CMV) is known to drive T lymphocytes toward a senescent phenotype, it remains controversial whether and how CMV can cause coronary heart disease (CHD). To explore whether CMV seropositivity or T-cell populations associated with immunosenescence were informative for adverse cardiovascular outcome in the very old, we prospectively analyzed peripheral blood samples from 751 octogenarians (38% males) from the Newcastle 85+ study for their power to predict survival during a 65-month follow-up (47.3% survival rate). CMV-seropositive participants showed a higher prevalence of CHD (37.7% vs. 26.7%, P = 0.030) compared to CMV-seronegative participants together with lower CD4/CD8 ratio (1.7 vs. 4.1, P < 0.0001) and higher frequencies of senescence-like CD4 memory cells (41.1% vs. 4.5%, P < 0.001) and senescence-like CD8 memory cells (TEMRA, 28.1% vs. 6.7%, P < 0.001). CMV seropositivity was also associated with increased six-year cardiovascular mortality (HR 1.75 [1.09-2.82], P = 0.021) or death from myocardial infarction and stroke (HR 1.89 [107-3.36], P = 0.029). Gender-adjusted multivariate Cox regression analysis revealed that low percentages of senescence-like CD4 T cells (HR 0.48 [0.32-0.72], P < 0.001) and near-senescent (CD27 negative) CD8 T cells (HR 0.60 [0.41-0.88], P = 0.029) reduced the risk of cardiovascular death. For senescence-like CD4, but not near-senescent CD8 T cells, these associations remained robust after additional adjustment for CMV status, comorbidities, and inflammation markers. We conclude that CMV seropositivity is linked to a higher incidence of CHD in octogenarians and that senescence in both the CD4 and CD8 T-cell compartments is a predictor of overall cardiovascular mortality as well as death from myocardial infarction and stroke.
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Affiliation(s)
- Ioakim Spyridopoulos
- Newcastle University Institute for Ageing; Newcastle University; Newcastle upon Tyne NE4 5PL UK
- Institute of Genetic Medicine; Newcastle University; Newcastle upon Tyne NE4 5PL UK
| | - Carmen Martin-Ruiz
- Newcastle University Institute for Ageing; Newcastle University; Newcastle upon Tyne NE4 5PL UK
- Institute of Neuroscience; Newcastle University; Newcastle upon Tyne NE4 5PL UK
| | - Catharien Hilkens
- Institute of Cellular Medicine; Newcastle University; Newcastle upon Tyne NE4 5PL UK
| | - Mohammad E. Yadegarfar
- Newcastle University Institute for Ageing; Newcastle University; Newcastle upon Tyne NE4 5PL UK
- Institute of Health and Society; Newcastle University; Newcastle upon Tyne NE4 5PL UK
| | - John Isaacs
- Newcastle University Institute for Ageing; Newcastle University; Newcastle upon Tyne NE4 5PL UK
- Institute of Cellular Medicine; Newcastle University; Newcastle upon Tyne NE4 5PL UK
| | - Carol Jagger
- Newcastle University Institute for Ageing; Newcastle University; Newcastle upon Tyne NE4 5PL UK
- Institute of Health and Society; Newcastle University; Newcastle upon Tyne NE4 5PL UK
| | - Tom Kirkwood
- Newcastle University Institute for Ageing; Newcastle University; Newcastle upon Tyne NE4 5PL UK
- Institute for Cell and Molecular Biosciences; Newcastle University; Newcastle upon Tyne NE4 5PL UK
| | - Thomas von Zglinicki
- Newcastle University Institute for Ageing; Newcastle University; Newcastle upon Tyne NE4 5PL UK
- Institute for Cell and Molecular Biosciences; Newcastle University; Newcastle upon Tyne NE4 5PL UK
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42
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Harris SE, Marioni RE, Martin-Ruiz C, Pattie A, Gow AJ, Cox SR, Corley J, von Zglinicki T, Starr JM, Deary IJ. Longitudinal telomere length shortening and cognitive and physical decline in later life: The Lothian Birth Cohorts 1936 and 1921. Mech Ageing Dev 2016; 154:43-8. [PMID: 26876762 PMCID: PMC4798845 DOI: 10.1016/j.mad.2016.02.004] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2015] [Revised: 01/27/2016] [Accepted: 02/05/2016] [Indexed: 01/04/2023]
Abstract
Telomere length is hypothesised to be a biological marker of both cognitive and physical ageing. Here we measure telomere length, and cognitive and physical abilities at mean ages 70, 73 and 76 years in the Lothian Birth Cohort 1936 (LBC1936), and at mean ages 79, 87, 90 and 92 years in the Lothian Birth Cohort 1921 (LBC1921). We investigate whether telomere length change predicts change in cognitive and physical abilities. In LBC1936 telomere length decreased by an average of 65 base pairs per year and in LBC1921 by 69 base pairs per year. However, change in telomere length did not predict change in cognitive or physical abilities. This study shows that, although cognitive ability, walking speed, lung function and grip strength all decline with age, they do so independently of telomere length shortening.
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Affiliation(s)
- Sarah E Harris
- Centre for Cognitive Ageing and Cognitive Epidemiology, University of Edinburgh, 7 George Square, Edinburgh EH8 9JZ, UK; Medical Genetics Section, University of Edinburgh Centre for Genomic and Experimental Medicine and MRC Institute of Genetics and Molecular Medicine, Western General Hospital, Crewe Road, Edinburgh EH4 2XU, UK.
| | - Riccardo E Marioni
- Centre for Cognitive Ageing and Cognitive Epidemiology, University of Edinburgh, 7 George Square, Edinburgh EH8 9JZ, UK; Medical Genetics Section, University of Edinburgh Centre for Genomic and Experimental Medicine and MRC Institute of Genetics and Molecular Medicine, Western General Hospital, Crewe Road, Edinburgh EH4 2XU, UK; Queensland Brain Institute, The University of Queensland, Brisbane 4072, QLD, Australia
| | - Carmen Martin-Ruiz
- Institute for Ageing, Newcastle University, Campus for Ageing and Vitality, Newcastle upon Tyne NE4 5PL, UK
| | - Alison Pattie
- Department of Psychology, University of Edinburgh, 7 George Square, Edinburgh EH8 9JZ, UK
| | - Alan J Gow
- Centre for Cognitive Ageing and Cognitive Epidemiology, University of Edinburgh, 7 George Square, Edinburgh EH8 9JZ, UK; Department of Psychology, School of Life Sciences, Heriot-Watt University, Edinburgh EH14 4AS, UK
| | - Simon R Cox
- Centre for Cognitive Ageing and Cognitive Epidemiology, University of Edinburgh, 7 George Square, Edinburgh EH8 9JZ, UK; Department of Psychology, University of Edinburgh, 7 George Square, Edinburgh EH8 9JZ, UK
| | - Janie Corley
- Department of Psychology, University of Edinburgh, 7 George Square, Edinburgh EH8 9JZ, UK
| | - Thomas von Zglinicki
- Institute for Ageing, Newcastle University, Campus for Ageing and Vitality, Newcastle upon Tyne NE4 5PL, UK
| | - John M Starr
- Centre for Cognitive Ageing and Cognitive Epidemiology, University of Edinburgh, 7 George Square, Edinburgh EH8 9JZ, UK; Alzheimer Scotland Dementia Research Centre, University of Edinburgh, 7 George Square, Edinburgh EH8 9JZ, UK
| | - Ian J Deary
- Centre for Cognitive Ageing and Cognitive Epidemiology, University of Edinburgh, 7 George Square, Edinburgh EH8 9JZ, UK; Department of Psychology, University of Edinburgh, 7 George Square, Edinburgh EH8 9JZ, UK
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43
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Correia-Melo C, Marques FDM, Anderson R, Hewitt G, Hewitt R, Cole J, Carroll BM, Miwa S, Birch J, Merz A, Rushton MD, Charles M, Jurk D, Tait SWG, Czapiewski R, Greaves L, Nelson G, Bohlooly-Y M, Rodriguez-Cuenca S, Vidal-Puig A, Mann D, Saretzki G, Quarato G, Green DR, Adams PD, von Zglinicki T, Korolchuk VI, Passos JF. Mitochondria are required for pro-ageing features of the senescent phenotype. EMBO J 2016; 35:724-42. [PMID: 26848154 PMCID: PMC4818766 DOI: 10.15252/embj.201592862] [Citation(s) in RCA: 442] [Impact Index Per Article: 55.3] [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: 08/19/2015] [Accepted: 01/12/2016] [Indexed: 01/07/2023] Open
Abstract
Cell senescence is an important tumour suppressor mechanism and driver of ageing. Both functions are dependent on the development of the senescent phenotype, which involves an overproduction of pro‐inflammatory and pro‐oxidant signals. However, the exact mechanisms regulating these phenotypes remain poorly understood. Here, we show the critical role of mitochondria in cellular senescence. In multiple models of senescence, absence of mitochondria reduced a spectrum of senescence effectors and phenotypes while preserving ATP production via enhanced glycolysis. Global transcriptomic analysis by RNA sequencing revealed that a vast number of senescent‐associated changes are dependent on mitochondria, particularly the pro‐inflammatory phenotype. Mechanistically, we show that the ATM, Akt and mTORC1 phosphorylation cascade integrates signals from the DNA damage response (DDR) towards PGC‐1β‐dependent mitochondrial biogenesis, contributing to a ROS‐mediated activation of the DDR and cell cycle arrest. Finally, we demonstrate that the reduction in mitochondrial content in vivo, by either mTORC1 inhibition or PGC‐1β deletion, prevents senescence in the ageing mouse liver. Our results suggest that mitochondria are a candidate target for interventions to reduce the deleterious impact of senescence in ageing tissues.
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Affiliation(s)
- Clara Correia-Melo
- Institute for Cell and Molecular Biosciences, Campus for Ageing and Vitality, Newcastle University Institute for Ageing, Newcastle University, Newcastle upon Tyne, UK GABBA Program, Abel Salazar Biomedical Sciences Institute University of Porto, Porto, Portugal
| | - Francisco D M Marques
- Institute for Cell and Molecular Biosciences, Campus for Ageing and Vitality, Newcastle University Institute for Ageing, Newcastle University, Newcastle upon Tyne, UK
| | - Rhys Anderson
- Institute for Cell and Molecular Biosciences, Campus for Ageing and Vitality, Newcastle University Institute for Ageing, Newcastle University, Newcastle upon Tyne, UK
| | - Graeme Hewitt
- Institute for Cell and Molecular Biosciences, Campus for Ageing and Vitality, Newcastle University Institute for Ageing, Newcastle University, Newcastle upon Tyne, UK
| | - Rachael Hewitt
- Institute of Cancer Sciences, CR-UK Beatson Institute, University of Glasgow, Glasgow, UK
| | - John Cole
- Institute of Cancer Sciences, CR-UK Beatson Institute, University of Glasgow, Glasgow, UK
| | - Bernadette M Carroll
- Institute for Cell and Molecular Biosciences, Campus for Ageing and Vitality, Newcastle University Institute for Ageing, Newcastle University, Newcastle upon Tyne, UK
| | - Satomi Miwa
- Institute for Cell and Molecular Biosciences, Campus for Ageing and Vitality, Newcastle University Institute for Ageing, Newcastle University, Newcastle upon Tyne, UK
| | - Jodie Birch
- Institute for Cell and Molecular Biosciences, Campus for Ageing and Vitality, Newcastle University Institute for Ageing, Newcastle University, Newcastle upon Tyne, UK
| | - Alina Merz
- Institute for Cell and Molecular Biosciences, Campus for Ageing and Vitality, Newcastle University Institute for Ageing, Newcastle University, Newcastle upon Tyne, UK
| | - Michael D Rushton
- Institute for Cell and Molecular Biosciences, Campus for Ageing and Vitality, Newcastle University Institute for Ageing, Newcastle University, Newcastle upon Tyne, UK
| | - Michelle Charles
- Institute for Cell and Molecular Biosciences, Campus for Ageing and Vitality, Newcastle University Institute for Ageing, Newcastle University, Newcastle upon Tyne, UK
| | - Diana Jurk
- Institute for Cell and Molecular Biosciences, Campus for Ageing and Vitality, Newcastle University Institute for Ageing, Newcastle University, Newcastle upon Tyne, UK
| | - Stephen W G Tait
- Institute of Cancer Sciences, CR-UK Beatson Institute, University of Glasgow, Glasgow, UK
| | - Rafal Czapiewski
- Institute for Cell and Molecular Biosciences, Campus for Ageing and Vitality, Newcastle University Institute for Ageing, Newcastle University, Newcastle upon Tyne, UK
| | - Laura Greaves
- Wellcome Trust Centre for Mitochondrial Research, Newcastle University Centre for Brain Ageing and Vitality, Newcastle University, Newcastle upon Tyne, UK
| | - Glyn Nelson
- Institute for Cell and Molecular Biosciences, Campus for Ageing and Vitality, Newcastle University Institute for Ageing, Newcastle University, Newcastle upon Tyne, UK
| | | | - Sergio Rodriguez-Cuenca
- Metabolic Research Laboratories, Wellcome Trust-MRC Institute of Metabolic Science, Addenbrooke's Hospital, University of Cambridge, Cambridge, UK
| | - Antonio Vidal-Puig
- Metabolic Research Laboratories, Wellcome Trust-MRC Institute of Metabolic Science, Addenbrooke's Hospital, University of Cambridge, Cambridge, UK
| | - Derek Mann
- Faculty of Medical Sciences, Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne, UK
| | - Gabriele Saretzki
- Institute for Cell and Molecular Biosciences, Campus for Ageing and Vitality, Newcastle University Institute for Ageing, Newcastle University, Newcastle upon Tyne, UK
| | - Giovanni Quarato
- Department of Immunology, St. Jude Children's Research Hospital, Memphis, TN, USA
| | - Douglas R Green
- Department of Immunology, St. Jude Children's Research Hospital, Memphis, TN, USA
| | - Peter D Adams
- Institute of Cancer Sciences, CR-UK Beatson Institute, University of Glasgow, Glasgow, UK
| | - Thomas von Zglinicki
- Institute for Cell and Molecular Biosciences, Campus for Ageing and Vitality, Newcastle University Institute for Ageing, Newcastle University, Newcastle upon Tyne, UK
| | - Viktor I Korolchuk
- Institute for Cell and Molecular Biosciences, Campus for Ageing and Vitality, Newcastle University Institute for Ageing, Newcastle University, Newcastle upon Tyne, UK
| | - João F Passos
- Institute for Cell and Molecular Biosciences, Campus for Ageing and Vitality, Newcastle University Institute for Ageing, Newcastle University, Newcastle upon Tyne, UK
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44
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Vistoli G, Treumann A, Zglinicki TV, Miwa S. Data from molecular dynamics simulations in support of the role of human CES1 in the hydrolysis of Amplex Red. Data Brief 2016; 6:865-70. [PMID: 26937463 PMCID: PMC4749891 DOI: 10.1016/j.dib.2016.01.031] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [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: 11/18/2015] [Revised: 01/05/2016] [Accepted: 01/19/2016] [Indexed: 11/28/2022] Open
Abstract
This data article contains the results of molecular dynamics (MD) simulations performed to assess the stability of the previously computed complex between the hCES1 structure and the Amplex Red (AR) substrate (Miwa et al., 2015) [1] and to compare the dynamic behavior of this complex with that of the corresponding hCES1-deacetylAR product. The study involves both standard molecular dynamics (MD) and steered (SMD) simulations to offer a quantitative comparison of the stability for the two complexes. With regard the standard MD runs, the data article graphically reports the r.m.s.d. profile of the ligand׳s atoms as well as the dynamic behavior of key contacts involving the catalytic Ser221 residue. The SMD simulations provide a comparison of the pull forces required to undock the two ligands and reveal that Van der Waals and hydrophobic interactions play a key role in complex stabilization.
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Affiliation(s)
- Giulio Vistoli
- Department Pharmaceutical Sciences, University of Milan, via Mangiagalli, 25, I-20133 Milan, Italy
| | - Achim Treumann
- Newcastle University Protein and Proteome Analysis, Devonshire Building, Devonshire Terrace, Newcastle upon Tyne NE1 7RU, UK
| | - Thomas von Zglinicki
- Institute for Cell & Molecular Biosciences and Newcastle University Institute for Ageing, Ageing Research Laboratories, Campus for Ageing and Vitality, Newcastle University, Newcastle upon Tyne NE4 5PL, UK
| | - Satomi Miwa
- Institute for Cell & Molecular Biosciences and Newcastle University Institute for Ageing, Ageing Research Laboratories, Campus for Ageing and Vitality, Newcastle University, Newcastle upon Tyne NE4 5PL, UK
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45
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Stout MB, Steyn FJ, Jurczak MJ, Camporez JPG, Zhu Y, Hawse JR, Jurk D, Palmer AK, Xu M, Pirtskhalava T, Evans GL, de Souza Santos R, Frank AP, White TA, Monroe DG, Singh RJ, Casaclang-Verzosa G, Miller JD, Clegg DJ, LeBrasseur NK, von Zglinicki T, Shulman GI, Tchkonia T, Kirkland JL. 17α-Estradiol Alleviates Age-related Metabolic and Inflammatory Dysfunction in Male Mice Without Inducing Feminization. J Gerontol A Biol Sci Med Sci 2016; 72:3-15. [PMID: 26809497 PMCID: PMC5155656 DOI: 10.1093/gerona/glv309] [Citation(s) in RCA: 78] [Impact Index Per Article: 9.8] [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: 11/20/2015] [Accepted: 12/15/2015] [Indexed: 12/20/2022] Open
Abstract
Aging is associated with visceral adiposity, metabolic disorders, and chronic low-grade inflammation. 17α-estradiol (17α-E2), a naturally occurring enantiomer of 17β-estradiol (17β-E2), extends life span in male mice through unresolved mechanisms. We tested whether 17α-E2 could alleviate age-related metabolic dysfunction and inflammation. 17α-E2 reduced body mass, visceral adiposity, and ectopic lipid deposition without decreasing lean mass. These declines were associated with reductions in energy intake due to the activation of hypothalamic anorexigenic pathways and direct effects of 17α-E2 on nutrient-sensing pathways in visceral adipose tissue. 17α-E2 did not alter energy expenditure or excretion. Fasting glucose, insulin, and glycosylated hemoglobin were also reduced by 17α-E2, and hyperinsulinemic-euglycemic clamps revealed improvements in peripheral glucose disposal and hepatic glucose production. Inflammatory mediators in visceral adipose tissue and the circulation were reduced by 17α-E2. 17α-E2 increased AMPKα and reduced mTOR complex 1 activity in visceral adipose tissue but not in liver or quadriceps muscle, which is in contrast to the generalized systemic effects of caloric restriction. These beneficial phenotypic changes occurred in the absence of feminization or cardiac dysfunction, two commonly observed deleterious effects of exogenous estrogen administration. Thus, 17α-E2 holds potential as a novel therapeutic for alleviating age-related metabolic dysfunction through tissue-specific effects.
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Affiliation(s)
- Michael B Stout
- Robert and Arlene Kogod Center on Aging, Mayo Clinic, Rochester, Minnesota
| | - Frederik J Steyn
- Center for Clinical Research and School of Biomedical Sciences, University of Queensland, Herston, Australia
| | - Michael J Jurczak
- Division of Endocrinology and Metabolism, University of Pittsburgh, Pennsylvania
| | | | - Yi Zhu
- Robert and Arlene Kogod Center on Aging, Mayo Clinic, Rochester, Minnesota
| | - John R Hawse
- Department of Biochemistry and Molecular Biology, Mayo Clinic, Rochester, Minnesota
| | - Diana Jurk
- Institutes for Cell & Molecular Biosciences and Ageing, Newcastle University
| | - Allyson K Palmer
- Robert and Arlene Kogod Center on Aging, Mayo Clinic, Rochester, Minnesota
| | - Ming Xu
- Robert and Arlene Kogod Center on Aging, Mayo Clinic, Rochester, Minnesota
| | - Tamar Pirtskhalava
- Robert and Arlene Kogod Center on Aging, Mayo Clinic, Rochester, Minnesota
| | - Glenda L Evans
- Robert and Arlene Kogod Center on Aging, Mayo Clinic, Rochester, Minnesota
| | - Roberta de Souza Santos
- Diabetes and Obesity Research Institute, Cedars-Sinai Medical Center, Beverly Hills, California
| | - Aaron P Frank
- Diabetes and Obesity Research Institute, Cedars-Sinai Medical Center, Beverly Hills, California
| | - Thomas A White
- Robert and Arlene Kogod Center on Aging, Mayo Clinic, Rochester, Minnesota
| | - David G Monroe
- Robert and Arlene Kogod Center on Aging, Mayo Clinic, Rochester, Minnesota
| | - Ravinder J Singh
- Department of Laboratory Medicine, Mayo Clinic, Rochester, Minnesota
| | | | - Jordan D Miller
- Robert and Arlene Kogod Center on Aging, Mayo Clinic, Rochester, Minnesota
| | - Deborah J Clegg
- Diabetes and Obesity Research Institute, Cedars-Sinai Medical Center, Beverly Hills, California
| | | | | | - Gerald I Shulman
- Howard Hughes Medical Institute, Yale University School of Medicine, New Haven, Connecticut
| | - Tamara Tchkonia
- Robert and Arlene Kogod Center on Aging, Mayo Clinic, Rochester, Minnesota
| | - James L Kirkland
- Robert and Arlene Kogod Center on Aging, Mayo Clinic, Rochester, Minnesota.
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46
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Miwa S, Treumann A, Bell A, Vistoli G, Nelson G, Hay S, von Zglinicki T. Carboxylesterase converts Amplex red to resorufin: Implications for mitochondrial H2O2 release assays. Free Radic Biol Med 2016; 90:173-83. [PMID: 26577176 PMCID: PMC4708625 DOI: 10.1016/j.freeradbiomed.2015.11.011] [Citation(s) in RCA: 69] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/14/2015] [Revised: 11/06/2015] [Accepted: 11/09/2015] [Indexed: 11/30/2022]
Abstract
Amplex Red is a fluorescent probe that is widely used to detect hydrogen peroxide (H2O2) in a reaction where it is oxidised to resorufin by horseradish peroxidase (HRP) as a catalyst. This assay is highly rated amongst other similar probes thanks to its superior sensitivity and stability. However, we report here that Amplex Red is readily converted to resorufin by a carboxylesterase without requiring H2O2, horseradish peroxidase or oxygen: this reaction is seen in various tissue samples such as liver and kidney as well as in cultured cells, causing a serious distortion of H2O2 measurements. The reaction can be inhibited by Phenylmethyl sulfonyl fluoride (PMSF) at concentrations which do not disturb mitochondrial function nor the ability of the Amplex Red-HRP system to detect H2O2.In vitro experiments and in silico docking simulations indicate that carboxylesterases 1 and 2 recognise Amplex Red with the same kinetics as carboxylesterase-containing mitochondria. We propose two different approaches to correct for this problem and re-evaluate the commonly performed experimental procedure for the detection of H2O2 release from isolated liver mitochondria. Our results call for a serious re-examination of previous data.
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Affiliation(s)
- Satomi Miwa
- Institute for Cell & Molecular Biosciences and Newcastle University Institute for Ageing, Ageing Research Laboratories, Campus for Ageing and Vitality, Newcastle University, Newcastle upon Tyne NE4 5PL, UK
| | - Achim Treumann
- Newcastle University Protein and Proteome Analysis, Devonshire Building, Devonshire Terrace, Newcastle upon Tyne NE1 7RU, UK
| | - Amy Bell
- Institute for Cell & Molecular Biosciences and Newcastle University Institute for Ageing, Ageing Research Laboratories, Campus for Ageing and Vitality, Newcastle University, Newcastle upon Tyne NE4 5PL, UK
| | - Giulio Vistoli
- Department of Pharmaceutical Sciences, University of Milan, via Mangiagalli, 25, I-20133 Milan, Italy
| | - Glyn Nelson
- Institute for Cell & Molecular Biosciences and Newcastle University Institute for Ageing, Ageing Research Laboratories, Campus for Ageing and Vitality, Newcastle University, Newcastle upon Tyne NE4 5PL, UK; Bioimaging Unit, Medical School, Newcastle University, Framlington Place, Newcastle upon Tyne NE2 4HH, UK
| | - Sam Hay
- Manchester Institute of Biotechnology and Faculty of Life Sciences, The University of Manchester, 131 Princess Street, Manchester M1 7DN, UK
| | - Thomas von Zglinicki
- Institute for Cell & Molecular Biosciences and Newcastle University Institute for Ageing, Ageing Research Laboratories, Campus for Ageing and Vitality, Newcastle University, Newcastle upon Tyne NE4 5PL, UK.
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Martin-Ruiz CM, Baird D, Roger L, Boukamp P, Krunic D, Cawthon R, Dokter MM, van der Harst P, Bekaert S, de Meyer T, Roos G, Svenson U, Codd V, Samani NJ, McGlynn L, Shiels PG, Pooley KA, Dunning AM, Cooper R, Wong A, Kingston A, von Zglinicki T. Reproducibility of Telomere Length Assessment--An International Collaborative Study. Int J Epidemiol 2015; 44:1749-54. [PMID: 26403809 PMCID: PMC6312091 DOI: 10.1093/ije/dyv171] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Martin-Ruiz CM, Baird D, Roger L, Boukamp P, Krunic D, Cawthon R, Dokter MM, van der Harst P, Bekaert S, de Meyer T, Roos G, Svenson U, Codd V, Samani NJ, McGlynn L, Shiels PG, Pooley KA, Dunning AM, Cooper R, Wong A, Kingston A, von Zglinicki T. Reproducibility of telomere length assessment: an international collaborative study. Int J Epidemiol 2015; 44:1673-83. [PMID: 25239152 PMCID: PMC4681105 DOI: 10.1093/ije/dyu191] [Citation(s) in RCA: 119] [Impact Index Per Article: 13.2] [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] [Accepted: 08/28/2014] [Indexed: 11/18/2022] Open
Abstract
BACKGROUND Telomere length is a putative biomarker of ageing, morbidity and mortality. Its application is hampered by lack of widely applicable reference ranges and uncertainty regarding the present limits of measurement reproducibility within and between laboratories. METHODS We instigated an international collaborative study of telomere length assessment: 10 different laboratories, employing 3 different techniques [Southern blotting, single telomere length analysis (STELA) and real-time quantitative PCR (qPCR)] performed two rounds of fully blinded measurements on 10 human DNA samples per round to enable unbiased assessment of intra- and inter-batch variation between laboratories and techniques. RESULTS Absolute results from different laboratories differed widely and could thus not be compared directly, but rankings of relative telomere lengths were highly correlated (correlation coefficients of 0.63-0.99). Intra-technique correlations were similar for Southern blotting and qPCR and were stronger than inter-technique ones. However, inter-laboratory coefficients of variation (CVs) averaged about 10% for Southern blotting and STELA and more than 20% for qPCR. This difference was compensated for by a higher dynamic range for the qPCR method as shown by equal variance after z-scoring. Technical variation per laboratory, measured as median of intra- and inter-batch CVs, ranged from 1.4% to 9.5%, with differences between laboratories only marginally significant (P = 0.06). Gel-based and PCR-based techniques were not different in accuracy. CONCLUSIONS Intra- and inter-laboratory technical variation severely limits the usefulness of data pooling and excludes sharing of reference ranges between laboratories. We propose to establish a common set of physical telomere length standards to improve comparability of telomere length estimates between laboratories.
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Affiliation(s)
| | - Duncan Baird
- Institute of Cancer and Genetics, Cardiff University, Cardiff, UK
| | - Laureline Roger
- Institute of Cancer and Genetics, Cardiff University, Cardiff, UK
| | - Petra Boukamp
- Deutsches Krebsforschungszentrum (DKFZ), Heidelberg, Germany
| | - Damir Krunic
- Deutsches Krebsforschungszentrum (DKFZ), Heidelberg, Germany
| | - Richard Cawthon
- Department of Human Genetics, University of Utah, Salt Lake City, UT, USA
| | - Martin M Dokter
- Department of Cardiology, University of Groningen, Groningen, The Netherlands
| | - Pim van der Harst
- Department of Cardiology, University of Groningen, Groningen, The Netherlands
| | - Sofie Bekaert
- Bimetra, Clinical Research Center, Ghent University Hospital, Ghent, Belgium
| | - Tim de Meyer
- Department of Mathematical Modelling, Statistics and Bioinformatics, Ghent University, Ghent, Belgium
| | - Goran Roos
- Department of Medical Biosciences, Umeå University, Umeå, Sweden
| | - Ulrika Svenson
- Department of Medical Biosciences, Umeå University, Umeå, Sweden
| | - Veryan Codd
- Department of Cardiovascular Sciences, University of Leicester, Leicester, UK
| | - Nilesh J Samani
- Department of Cardiovascular Sciences, University of Leicester, Leicester, UK
| | - Liane McGlynn
- Institute of Cancer Sciences, University of Glasgow, Glasgow, UK
| | - Paul G Shiels
- Institute of Cancer Sciences, University of Glasgow, Glasgow, UK
| | | | - Alison M Dunning
- Department of Oncology, Centre for Cancer Genetic Epidemiology, University of Cambridge, Cambridge, UK and
| | - Rachel Cooper
- MRC Unit for Lifelong Health and Ageing at UCL, London, UK
| | - Andrew Wong
- MRC Unit for Lifelong Health and Ageing at UCL, London, UK
| | - Andrew Kingston
- Newcastle University Institute for Ageing, Newcastle University, Newcastle, UK
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Arai Y, Martin-Ruiz CM, Takayama M, Abe Y, Takebayashi T, Koyasu S, Suematsu M, Hirose N, von Zglinicki T. Inflammation, But Not Telomere Length, Predicts Successful Ageing at Extreme Old Age: A Longitudinal Study of Semi-supercentenarians. EBioMedicine 2015; 2:1549-58. [PMID: 26629551 PMCID: PMC4634197 DOI: 10.1016/j.ebiom.2015.07.029] [Citation(s) in RCA: 185] [Impact Index Per Article: 20.6] [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: 06/03/2015] [Revised: 07/20/2015] [Accepted: 07/22/2015] [Indexed: 11/22/2022] Open
Abstract
To determine the most important drivers of successful ageing at extreme old age, we combined community-based prospective cohorts: Tokyo Oldest Old Survey on Total Health (TOOTH), Tokyo Centenarians Study (TCS) and Japanese Semi-Supercentenarians Study (JSS) comprising 1554 individuals including 684 centenarians and (semi-)supercentenarians, 167 pairs of centenarian offspring and spouses, and 536 community-living very old (85 to 99 years). We combined z scores from multiple biomarkers to describe haematopoiesis, inflammation, lipid and glucose metabolism, liver function, renal function, and cellular senescence domains. In Cox proportional hazard models, inflammation predicted all-cause mortality with hazard ratios (95% CI) 1.89 (1.21 to 2.95) and 1.36 (1.05 to 1.78) in the very old and (semi-)supercentenarians, respectively. In linear forward stepwise models, inflammation predicted capability (10.8% variance explained) and cognition (8(.)6% variance explained) in (semi-)supercentenarians better than chronologic age or gender. The inflammation score was also lower in centenarian offspring compared to age-matched controls with Δ (95% CI) = - 0.795 (- 1.436 to - 0.154). Centenarians and their offspring were able to maintain long telomeres, but telomere length was not a predictor of successful ageing in centenarians and semi-supercentenarians. We conclude that inflammation is an important malleable driver of ageing up to extreme old age in humans.
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Key Words
- ALT, alanine aminotransferase or alanine transaminase
- ANOVA, analysis of variance
- AST, aspartate aminotransferase or aspartate transaminase
- Ageing
- CD, cluster of differentiation
- CMV, cytomegalovirus
- CRP, C-reactive protein
- CVD, cardiovascular disease
- Centenarian
- ELISA, enzyme-linked immunosorbent assay
- GGTP, gamma-glutamyl-transpeptidase
- IL-6, interleukin 6
- IQR, inter-quartile range
- Inflammation
- JSS, Japanese Semi-Supercentenarians Study
- LTL, leukocyte telomere length
- MMSE, Mini-Mental State Examination
- NK cells, natural killer cells
- PCR, polymerase chain reaction
- SD, standard deviation
- TCS, Tokyo Centenarians Study
- TNF-alpha, tumour necrosis factor-alpha (TNF-alpha)
- TOOTH, Tokyo Oldest Old Survey on Total Health
- Telomere
- eGFR, estimated glomerular filtration rate
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Affiliation(s)
- Yasumichi Arai
- Centre for Supercentenarian Research, Keio University School of Medicine, Tokyo, Japan
| | - Carmen M. Martin-Ruiz
- Newcastle University Institute for Ageing, Campus for Ageing and Vitality, Newcastle University, UK
| | - Michiyo Takayama
- Centre for Preventive Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Yukiko Abe
- Centre for Supercentenarian Research, Keio University School of Medicine, Tokyo, Japan
| | - Toru Takebayashi
- Department of Preventive Medicine and Public Health, Keio University School of Medicine, Tokyo, Japan
| | - Shigeo Koyasu
- Laboratory for Immune Cell Systems, RIKEN Centre for Integrative Medical Sciences (IMS), Yokohama, Kanagawa, Japan
- Department of Microbiology and Immunology, Keio University School of Medicine, Tokyo, Japan
| | - Makoto Suematsu
- Centre for Supercentenarian Research, Keio University School of Medicine, Tokyo, Japan
- Department of Biochemistry, Keio University School of Medicine, and JST, ERATO, Suematsu Gas Biology Project, Tokyo, Japan
| | - Nobuyoshi Hirose
- Centre for Supercentenarian Research, Keio University School of Medicine, Tokyo, Japan
- Correspondence to: N. Hirose, Centre for Supercentenarian Research, Keio University School of Medicine, 35, Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan.
| | - Thomas von Zglinicki
- Newcastle University Institute for Ageing, Campus for Ageing and Vitality, Newcastle University, UK
- Correspondence to: T. von Zglinicki, Newcastle University Institute for Ageing, Campus for Ageing and Vitality, Newcastle University, Newcastle upon Tyne NE4 5PL, UK.
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Mitnitski A, Collerton J, Martin-Ruiz C, Jagger C, von Zglinicki T, Rockwood K, Kirkwood TBL. Age-related frailty and its association with biological markers of ageing. BMC Med 2015; 13:161. [PMID: 26166298 PMCID: PMC4499935 DOI: 10.1186/s12916-015-0400-x] [Citation(s) in RCA: 189] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/23/2015] [Accepted: 06/12/2015] [Indexed: 12/31/2022] Open
Abstract
BACKGROUND The relationship between age-related frailty and the underlying processes that drive changes in health is currently unclear. Considered individually, most blood biomarkers show only weak relationships with frailty and ageing. Here, we examined whether a biomarker-based frailty index (FI-B) allowed examination of their collective effect in predicting mortality compared with individual biomarkers, a clinical deficits frailty index (FI-CD), and the Fried frailty phenotype. METHODS We analyzed baseline data and up to 7-year mortality in the Newcastle 85+ Study (n = 845; mean age 85.5). The FI-B combined 40 biomarkers of cellular ageing, inflammation, haematology, and immunosenescence. The Kaplan-Meier estimator was used to stratify participants into FI-B risk strata. Stability of the risk estimates for the FI-B was assessed using iterative, random subsampling of the 40 FI-B items. Predictive validity was tested using Cox proportional hazards analysis and discriminative ability by the area under receiver operating characteristic (ROC) curves. RESULTS The mean FI-B was 0.35 (SD, 0.08), higher than the mean FI-CD (0.22; SD, 0.12); no participant had an FI-B score <0.12. Higher values of each FI were associated with higher mortality risk. In a sex-adjusted model, each one percent increase in the FI-B increased the hazard ratio by 5.4 % (HR, 1.05; CI, 1.04-1.06). The FI-B was more powerful for mortality prediction than any individual biomarker and was robust to biomarker substitution. The ROC analysis showed moderate discriminative ability for 7-year mortality (AUC for FI-CD = 0.71 and AUC for FI-B = 0.66). No individual biomarker's AUC exceeded 0.61. The AUC for combined FI-CD/FI-B was 0.75. CONCLUSIONS Many biological processes are implicated in ageing. The systemic effects of these processes can be elucidated using the frailty index approach, which showed here that subclinical deficits increased the risk of death. In the future, blood biomarkers may indicate the nature of the underlying causal deficits leading to age-related frailty, thereby helping to expose targets for early preventative interventions.
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Affiliation(s)
- Arnold Mitnitski
- Department of Medicine, Dalhousie University, Halifax, NS, B3H 2E1, Canada.
| | - Joanna Collerton
- Institute of Health and Society and Newcastle University Institute for Ageing, Newcastle upon Tyne, NE4 5PL, UK.
| | - Carmen Martin-Ruiz
- Institute of Neuroscience and Newcastle University Institute for Ageing, Newcastle upon Tyne, NE4 5PL, UK.
| | - Carol Jagger
- Institute of Health and Society and Newcastle University Institute for Ageing, Newcastle upon Tyne, NE4 5PL, UK.
| | - Thomas von Zglinicki
- Institute for Cell and Molecular Biosciences and Newcastle University Institute for Ageing, Newcastle upon Tyne, NE4 5PL, UK.
| | - Kenneth Rockwood
- Division of Geriatric Medicine, Dalhousie University, Halifax, NS, B3H 2E1, Canada.
| | - Thomas B L Kirkwood
- Institute for Cell and Molecular Biosciences and Newcastle University Institute for Ageing, Newcastle upon Tyne, NE4 5PL, UK.
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