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Szilágyi A, Takács B, Szekeres R, Tarjányi V, Nagy D, Priksz D, Bombicz M, Kiss R, Szabó AM, Lehoczki A, Gesztelyi R, Juhász B, Szilvássy Z, Varga B. Effects of voluntary and forced physical exercise on the retinal health of aging Wistar rats. GeroScience 2024; 46:4707-4728. [PMID: 38795184 PMCID: PMC11336036 DOI: 10.1007/s11357-024-01208-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2023] [Accepted: 05/13/2024] [Indexed: 05/27/2024] Open
Abstract
Aging is accompanied by an increased prevalence of degenerative conditions, including those affecting ocular health, which significantly impact quality of life and increase the burden on healthcare systems. Among these, retinal aging is of particular concern due to its direct link to vision impairment, a leading cause of disability in the elderly. Vision loss in the aging population is associated with heightened risks of cognitive decline, social isolation, and morbidity. This study addresses the critical gap in our understanding of modifiable lifestyle factors, such as physical exercise, that may mitigate retinal aging and its related pathologies. We investigated the effects of different exercise regimens-voluntary (recreational-type) and forced (high-intensity)-on the retinal health of aging Wistar rats (18-month-old), serving as a model for studying the translational potential of exercise interventions in humans. Male Wistar rats were divided into four groups: a young control (3-month-old) for baseline comparison, an aged sedentary control, an aged group engaging in voluntary exercise via a running wheel in their cage, and an aged group subjected to forced exercise on a treadmill for six sessions of 20 min each per week. After a 6-month experimental period, we assessed retinal function via electroretinography (ERG), measured retinal thickness histologically, and analyzed protein expression changes relevant to oxidative stress, inflammation, and anti-aging mechanisms. Our findings reveal that voluntary exercise positively impacts retinal function and morphology, reducing oxidative stress and inflammation markers while enhancing anti-aging protein expression. In contrast, forced exercise showed diminished benefits. These insights underscore the importance of exercise intensity and preference in preserving retinal health during aging. The study highlights the potential of recreational physical activity as a non-invasive strategy to counteract retinal aging, advocating for further research into exercise regimens as preventative therapies for age-related ocular degenerations.
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Affiliation(s)
- Anna Szilágyi
- Department of Pharmacology and Pharmacotherapy, Faculty of Medicine, University of Debrecen, Nagyerdei Krt 98., 4032, Debrecen, Hungary
| | - Barbara Takács
- Department of Pharmacology and Pharmacotherapy, Faculty of Medicine, University of Debrecen, Nagyerdei Krt 98., 4032, Debrecen, Hungary
| | - Réka Szekeres
- Department of Pharmacology and Pharmacotherapy, Faculty of Medicine, University of Debrecen, Nagyerdei Krt 98., 4032, Debrecen, Hungary
| | - Vera Tarjányi
- Department of Pharmacology and Pharmacotherapy, Faculty of Medicine, University of Debrecen, Nagyerdei Krt 98., 4032, Debrecen, Hungary
| | - Dávid Nagy
- Department of Pharmacology and Pharmacotherapy, Faculty of Medicine, University of Debrecen, Nagyerdei Krt 98., 4032, Debrecen, Hungary
| | - Dániel Priksz
- Department of Pharmacology and Pharmacotherapy, Faculty of Medicine, University of Debrecen, Nagyerdei Krt 98., 4032, Debrecen, Hungary
| | - Mariann Bombicz
- Department of Pharmacology and Pharmacotherapy, Faculty of Medicine, University of Debrecen, Nagyerdei Krt 98., 4032, Debrecen, Hungary
| | - Rita Kiss
- Department of Pharmacology and Pharmacotherapy, Faculty of Medicine, University of Debrecen, Nagyerdei Krt 98., 4032, Debrecen, Hungary
| | - Adrienn Mónika Szabó
- Department of Pharmacology and Pharmacotherapy, Faculty of Medicine, University of Debrecen, Nagyerdei Krt 98., 4032, Debrecen, Hungary
| | - Andrea Lehoczki
- Departments of Hematology and Stem Cell Transplantation, South Pest Central Hospital, National Institute of Hematology and Infectious Diseases, Saint Ladislaus Campus, Budapest, Hungary
- Department of Public Health, Semmelweis University, Budapest, Hungary
- Doctoral College, Health Sciences Program, Semmelweis University, Budapest, Hungary
| | - Rudolf Gesztelyi
- Department of Pharmacology and Pharmacotherapy, Faculty of Medicine, University of Debrecen, Nagyerdei Krt 98., 4032, Debrecen, Hungary
| | - Béla Juhász
- Department of Pharmacology and Pharmacotherapy, Faculty of Medicine, University of Debrecen, Nagyerdei Krt 98., 4032, Debrecen, Hungary
| | - Zoltán Szilvássy
- Department of Pharmacology and Pharmacotherapy, Faculty of Medicine, University of Debrecen, Nagyerdei Krt 98., 4032, Debrecen, Hungary
| | - Balázs Varga
- Department of Pharmacology and Pharmacotherapy, Faculty of Medicine, University of Debrecen, Nagyerdei Krt 98., 4032, Debrecen, Hungary.
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2
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Madreiter-Sokolowski CT, Hiden U, Krstic J, Panzitt K, Wagner M, Enzinger C, Khalil M, Abdellatif M, Malle E, Madl T, Osto E, Schosserer M, Binder CJ, Olschewski A. Targeting organ-specific mitochondrial dysfunction to improve biological aging. Pharmacol Ther 2024; 262:108710. [PMID: 39179117 DOI: 10.1016/j.pharmthera.2024.108710] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2024] [Revised: 08/09/2024] [Accepted: 08/20/2024] [Indexed: 08/26/2024]
Abstract
In an aging society, unveiling new anti-aging strategies to prevent and combat aging-related diseases is of utmost importance. Mitochondria are the primary ATP production sites and key regulators of programmed cell death. Consequently, these highly dynamic organelles play a central role in maintaining tissue function, and mitochondrial dysfunction is a pivotal factor in the progressive age-related decline in cellular homeostasis and organ function. The current review examines recent advances in understanding the interplay between mitochondrial dysfunction and organ-specific aging. Thereby, we dissect molecular mechanisms underlying mitochondrial impairment associated with the deterioration of organ function, exploring the role of mitochondrial DNA, reactive oxygen species homeostasis, metabolic activity, damage-associated molecular patterns, biogenesis, turnover, and dynamics. We also highlight emerging therapeutic strategies in preclinical and clinical tests that are supposed to rejuvenate mitochondrial function, such as antioxidants, mitochondrial biogenesis stimulators, and modulators of mitochondrial turnover and dynamics. Furthermore, we discuss potential benefits and challenges associated with the use of these interventions, emphasizing the need for organ-specific approaches given the unique mitochondrial characteristics of different tissues. In conclusion, this review highlights the therapeutic potential of addressing mitochondrial dysfunction to mitigate organ-specific aging, focusing on the skin, liver, lung, brain, skeletal muscle, and lung, as well as on the reproductive, immune, and cardiovascular systems. Based on a comprehensive understanding of the multifaceted roles of mitochondria, innovative therapeutic strategies may be developed and optimized to combat biological aging and promote healthy aging across diverse organ systems.
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Affiliation(s)
| | - Ursula Hiden
- Department of Obstetrics and Gynecology, Research Unit of Early Life Determinants, Medical University of Graz, Austria
| | - Jelena Krstic
- Division of Cell Biology, Histology and Embryology, Medical University of Graz, BioTechMed-Graz, Austria
| | - Katrin Panzitt
- Diagnostic and Research Institute of Pathology, Medical University of Graz, Austria
| | - Martin Wagner
- Division of Gastroenterology and Hepatology, Medical University of Graz, Austria
| | | | - Michael Khalil
- Department of Neurology, Medical University of Graz, Austria
| | - Mahmoud Abdellatif
- Division of Cardiology, Medical University of Graz, BioTechMed-Graz, Austria
| | - Ernst Malle
- Division of Molecular Biology and Biochemistry, Medical University of Graz, BioTechMed-Graz, Austria
| | - Tobias Madl
- Division of Medicinal Chemistry, Medical University of Graz, BioTechMed-Graz, Austria
| | - Elena Osto
- Division of Physiology and Pathophysiology, Medical University of Graz
| | - Markus Schosserer
- Center for Pathobiochemistry and Genetics, Medical University of Vienna, Austria; Christian Doppler Laboratory for Skin Multimodal Imaging of Aging and Senescence, Austria
| | - Christoph J Binder
- Department of Laboratory Medicine, Medical University of Vienna, Austria
| | - Andrea Olschewski
- Department of Anesthesiology and Intensive Care Medicine, LBI for Lung Vascular Research, Medical University of Graz, Austria.
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3
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Ozcan M, Abdellatif M, Javaheri A, Sedej S. Risks and Benefits of Intermittent Fasting for the Aging Cardiovascular System. Can J Cardiol 2024; 40:1445-1457. [PMID: 38354947 DOI: 10.1016/j.cjca.2024.02.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2023] [Revised: 02/08/2024] [Accepted: 02/08/2024] [Indexed: 02/16/2024] Open
Abstract
Population aging and the associated increase in cardiovascular disease rates pose serious threats to global public health. Different forms of fasting have become an increasingly attractive strategy to directly address aging and potentially limit or delay the onset of cardiovascular diseases. A growing number of experimental studies and clinical trials indicate that the amount and timing of food intake as well as the daily time window during which food is consumed, are crucial determinants of cardiovascular health. Indeed, intermittent fasting counteracts the molecular hallmarks of cardiovascular aging and promotes different aspects of cardiometabolic health, including blood pressure and glycemic control, as well as body weight reduction. In this report, we summarize current evidence from randomized clinical trials of intermittent fasting on body weight and composition as well as cardiovascular and metabolic risk factors. Moreover, we critically discuss the preventive and therapeutic potential of intermittent fasting, but also possible detrimental effects in the context of cardiovascular aging and related disease. We delve into the physiological mechanisms through which intermittent fasting might improve cardiovascular health, and raise important factors to consider in the design of clinical trials on the efficacy of intermittent fasting to reduce major adverse cardiovascular events among aged individuals at high risk of cardiovascular disease. We conclude that despite growing evidence and interest among the lay and scientific communities in the cardiovascular health-improving effects of intermittent fasting, further research efforts and appropriate caution are warranted before broadly implementing intermittent fasting regimens, especially in elderly persons.
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Affiliation(s)
- Mualla Ozcan
- Washington University School of Medicine in St. Louis, St. Louis, Missouri, USA
| | - Mahmoud Abdellatif
- Department of Cardiology, Medical University of Graz, Graz, Austria; BioTechMed Graz, Graz, Austria
| | - Ali Javaheri
- Washington University School of Medicine in St. Louis, St. Louis, Missouri, USA; John J. Cochran Veterans Affairs Medical Center, St. Louis, Missouri, USA
| | - Simon Sedej
- Department of Cardiology, Medical University of Graz, Graz, Austria; BioTechMed Graz, Graz, Austria; Institute of Physiology, Faculty of Medicine, University of Maribor, Maribor, Slovenia.
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4
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Somasundaram I, Jain SM, Blot-Chabaud M, Pathak S, Banerjee A, Rawat S, Sharma NR, Duttaroy AK. Mitochondrial dysfunction and its association with age-related disorders. Front Physiol 2024; 15:1384966. [PMID: 39015222 PMCID: PMC11250148 DOI: 10.3389/fphys.2024.1384966] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2024] [Accepted: 06/10/2024] [Indexed: 07/18/2024] Open
Abstract
Aging is a complex process that features a functional decline in many organelles. Various factors influence the aging process, such as chromosomal abnormalities, epigenetic changes, telomere shortening, oxidative stress, and mitochondrial dysfunction. Mitochondrial dysfunction significantly impacts aging because mitochondria regulate cellular energy, oxidative balance, and calcium levels. Mitochondrial integrity is maintained by mitophagy, which helps maintain cellular homeostasis, prevents ROS production, and protects against mtDNA damage. However, increased calcium uptake and oxidative stress can disrupt mitochondrial membrane potential and permeability, leading to the apoptotic cascade. This disruption causes increased production of free radicals, leading to oxidative modification and accumulation of mitochondrial DNA mutations, which contribute to cellular dysfunction and aging. Mitochondrial dysfunction, resulting from structural and functional changes, is linked to age-related degenerative diseases. This review focuses on mitochondrial dysfunction, its implications in aging and age-related disorders, and potential anti-aging strategies through targeting mitochondrial dysfunction.
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Affiliation(s)
- Indumathi Somasundaram
- Biotechnology Engineering, Kolhapur Institute of Technology’s College of Engineering, Kolhapur, India
| | - Samatha M. Jain
- Department of Biotechnology, Faculty of Allied Health Sciences, Chettinad Hospital and Research Institute, Chettinad Academy of Research and Education, Chennai, India
| | | | - Surajit Pathak
- Department of Biotechnology, Faculty of Allied Health Sciences, Chettinad Hospital and Research Institute, Chettinad Academy of Research and Education, Chennai, India
| | - Antara Banerjee
- Department of Biotechnology, Faculty of Allied Health Sciences, Chettinad Hospital and Research Institute, Chettinad Academy of Research and Education, Chennai, India
| | - Sonali Rawat
- Stem Cell Facility, DBT-Centre of Excellence for Stem Cell Research, All India Institute of Medical Sciences, New Delhi, India
| | - Neeta Raj Sharma
- School of Bioengineering and Biosciences, Lovely Professional University, Phagwara, India
| | - Asim K. Duttaroy
- Department of Nutrition, Faculty of Medicine, Institute of Basic Medical Sciences, University of Oslo, Oslo, Norway
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5
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Zimmermann A, Madeo F, Diwan A, Sadoshima J, Sedej S, Kroemer G, Abdellatif M. Metabolic control of mitophagy. Eur J Clin Invest 2024; 54:e14138. [PMID: 38041247 DOI: 10.1111/eci.14138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/03/2023] [Revised: 11/09/2023] [Accepted: 11/20/2023] [Indexed: 12/03/2023]
Abstract
Mitochondrial dysfunction is a major hallmark of ageing and related chronic disorders. Controlled removal of damaged mitochondria by the autophagic machinery, a process known as mitophagy, is vital for mitochondrial homeostasis and cell survival. The central role of mitochondria in cellular metabolism places mitochondrial removal at the interface of key metabolic pathways affecting the biosynthesis or catabolism of acetyl-coenzyme A, nicotinamide adenine dinucleotide, polyamines, as well as fatty acids and amino acids. Molecular switches that integrate the metabolic status of the cell, like AMP-dependent protein kinase, protein kinase A, mechanistic target of rapamycin and sirtuins, have also emerged as important regulators of mitophagy. In this review, we discuss how metabolic regulation intersects with mitophagy. We place special emphasis on the metabolic regulatory circuits that may be therapeutically targeted to delay ageing and mitochondria-associated chronic diseases. Moreover, we identify outstanding knowledge gaps, such as the ill-defined distinction between basal and damage-induced mitophagy, which must be resolved to boost progress in this area.
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Affiliation(s)
- Andreas Zimmermann
- Institute of Molecular Biosciences, University of Graz, Graz, Austria
- Field of Excellence BioHealth-University of Graz, Graz, Austria
| | - Frank Madeo
- Institute of Molecular Biosciences, University of Graz, Graz, Austria
- Field of Excellence BioHealth-University of Graz, Graz, Austria
- BioTechMed Graz, Graz, Austria
| | - Abhinav Diwan
- Division of Cardiology and Center for Cardiovascular Research, Washington University School of Medicine, and John Cochran Veterans Affairs Medical Center, St. Louis, Missouri, USA
| | - Junichi Sadoshima
- Department of Cell Biology and Molecular Medicine, Rutgers New Jersey Medical School, Newark, New Jersey, USA
| | - Simon Sedej
- BioTechMed Graz, Graz, Austria
- Department of Cardiology, Medical University of Graz, Graz, Austria
- Faculty of Medicine, Institute of Physiology, University of Maribor, Maribor, Slovenia
| | - Guido Kroemer
- Metabolomics and Cell Biology Platforms, Institut Gustave Roussy, Villejuif, France
- Centre de Recherche des Cordeliers, Equipe labellisée par la Ligue contre le cancer, Université de Paris, Sorbonne Université, INSERM U1138, Institut Universitaire de France, Paris, France
- Department of Biology, Hôpital Européen Georges Pompidou, Institut du Cancer Paris CARPEM, Paris, France
| | - Mahmoud Abdellatif
- BioTechMed Graz, Graz, Austria
- Department of Cardiology, Medical University of Graz, Graz, Austria
- Metabolomics and Cell Biology Platforms, Institut Gustave Roussy, Villejuif, France
- Centre de Recherche des Cordeliers, Equipe labellisée par la Ligue contre le cancer, Université de Paris, Sorbonne Université, INSERM U1138, Institut Universitaire de France, Paris, France
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6
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Hussain MS, Altamimi ASA, Afzal M, Almalki WH, Kazmi I, Alzarea SI, Gupta G, Shahwan M, Kukreti N, Wong LS, Kumarasamy V, Subramaniyan V. Kaempferol: Paving the path for advanced treatments in aging-related diseases. Exp Gerontol 2024; 188:112389. [PMID: 38432575 DOI: 10.1016/j.exger.2024.112389] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2023] [Revised: 01/17/2024] [Accepted: 02/29/2024] [Indexed: 03/05/2024]
Abstract
Aging-related diseases (ARDs) are a major global health concern, and the development of effective therapies is urgently needed. Kaempferol, a flavonoid found in several plants, has emerged as a promising candidate for ameliorating ARDs. This comprehensive review examines Kaempferol's chemical properties, safety profile, and pharmacokinetics, and highlights its potential therapeutic utility against ARDs. Kaempferol's therapeutic potential is underpinned by its distinctive chemical structure, which confers antioxidative and anti-inflammatory properties. Kaempferol counteracts reactive oxygen species (ROS) and modulates crucial cellular pathways, thereby combating oxidative stress and inflammation, hallmarks of ARDs. Kaempferol's low toxicity and wide safety margins, as demonstrated by preclinical and clinical studies, further substantiate its therapeutic potential. Compelling evidence supports Kaempferol's substantial potential in addressing ARDs through several mechanisms, notably anti-inflammatory, antioxidant, and anti-apoptotic actions. Kaempferol exhibits a versatile neuroprotective effect by modulating various proinflammatory signaling pathways, including NF-kB, p38MAPK, AKT, and the β-catenin cascade. Additionally, it hinders the formation and aggregation of beta-amyloid protein and regulates brain-derived neurotrophic factors. In terms of its anticancer potential, kaempferol acts through diverse pathways, inducing apoptosis, arresting the cell cycle at the G2/M phase, suppressing epithelial-mesenchymal transition (EMT)-related markers, and affecting the phosphoinositide 3-kinase/protein kinase B signaling pathways. Subsequent studies should focus on refining dosage regimens, exploring innovative delivery systems, and conducting comprehensive clinical trials to translate these findings into effective therapeutic applications.
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Affiliation(s)
- Md Sadique Hussain
- School of Pharmaceutical Sciences, Jaipur National University, Jagatpura, 302017 Jaipur, Rajasthan, India
| | | | - Muhammad Afzal
- Department of Pharmaceutical Sciences, Pharmacy Program, Batterjee Medical College, P.O. Box 6231, Jeddah 21442, Saudi Arabia
| | - Waleed Hassan Almalki
- Department of Pharmacology, College of Pharmacy, Umm Al-Qura University, Makkah, Saudi Arabia
| | - Imran Kazmi
- Department of Biochemistry, Faculty of Science, King Abdulaziz University, 21589, Jeddah, Saudi Arabia
| | - Sami I Alzarea
- Department of Pharmacology, College of Pharmacy, Jouf University, 72341, Sakaka, Aljouf, Saudi Arabia
| | - Gaurav Gupta
- Centre for Global Health Research, Saveetha Medical College, Saveetha Institute of Medical and Technical Sciences, Saveetha University, India; Centre of Medical and Bio-allied Health Sciences Research, Ajman University, Ajman, Ajman 346, United Arab Emirates
| | - Moyad Shahwan
- Centre of Medical and Bio-allied Health Sciences Research, Ajman University, Ajman, Ajman 346, United Arab Emirates; Department of Clinical Sciences, College of Pharmacy and Health Sciences, Ajman University, Ajman 346, United Arab Emirates
| | - Neelima Kukreti
- School of Pharmacy, Graphic Era Hill University, Dehradun 248007, India
| | - Ling Shing Wong
- Faculty of Health and Life Sciences, INTI International University, Nilai 71800, Malaysia
| | - Vinoth Kumarasamy
- Department of Parasitology and Medical Entomology, Faculty of Medicine, Universiti Kebangsaan Malaysia, Jalan Yaacob Latif, Cheras, 56000 Kuala Lumpur, Malaysia.
| | - Vetriselvan Subramaniyan
- Pharmacology Unit, Jeffrey Cheah School of Medicine and Health Sciences, Monash University, Jalan Lagoon Selatan, Bandar Sunway 47500, Selangor Darul Ehsan, Malaysia.
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Guo Y, Guan T, Yu Q, Sanghai N, Shafiq K, Li M, Jiao X, Na D, Zhang G, Kong J. ALS-linked SOD1 mutations impair mitochondrial-derived vesicle formation and accelerate aging. Redox Biol 2024; 69:102972. [PMID: 38056310 PMCID: PMC10746562 DOI: 10.1016/j.redox.2023.102972] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2023] [Revised: 11/06/2023] [Accepted: 11/20/2023] [Indexed: 12/08/2023] Open
Abstract
Oxidative stress (OS) is regarded as the dominant theory for aging. While compelling correlative data have been generated to support the OS theory, a direct cause-and-effect relationship between the accumulation of oxidation-mediated damage and aging has not been firmly established. Superoxide dismutase 1 (SOD1) is a primary antioxidant in all cells. It is, however, susceptible to oxidation due to OS and gains toxic properties to cells. This study investigates the role of oxidized SOD1 derived from amyotrophic lateral sclerosis (ALS) linked SOD1 mutations in cell senescence and aging. Herein, we have shown that the cell line NSC34 expressing the G93A mutation of human SOD1 (hSOD1G93A) entered premature senescence as evidenced by a decreased number of the 5-ethynyl-2'-deoxyuridine (EdU)-positive cells. There was an upregulation of cellular senescence markers compared to cells expressing the wild-type human SOD1 (hSOD1WT). Transgenic mice carrying the hSOD1G93A gene showed aging phenotypes at an early age (135 days) with high levels of P53 and P16 but low levels of SIRT1 and SIRT6 compared with age-matched hSOD1WT transgenic mice. Notably, the levels of oxidized SOD1 were significantly elevated in both the senescent NSC34 cells and 135-day hSOD1G93A mice. Selective removal of oxidized SOD1 by our CT4-directed autophagy significantly decelerated aging, indicating that oxidized SOD1 is a causal factor of aging. Intriguingly, mitochondria malfunctioned in both senescent NSC34 cells and middle-aged hSODG93A transgenic mice. They exhibited increased production of mitochondrial-derived vesicles (MDVs) in response to mild OS in mutant humanSOD1 (hSOD1) transgenic mice at a younger age; however, the mitochondrial response gradually declined with aging. In conclusion, our data show that oxidized SOD1 derived from ALS-linked SOD1 mutants is a causal factor for cellular senescence and aging. Compromised mitochondrial responsiveness to OS may serve as an indicator of premature aging.
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Affiliation(s)
- Ying Guo
- Department of Human Anatomy and Cell Science, Max Rady College of Medicine, Rady Faculty of Health Sciences, University of Manitoba, Canada; Department of Forensic Medicine, Hebei North University, Zhangjiakou, China
| | - Teng Guan
- Department of Human Anatomy and Cell Science, Max Rady College of Medicine, Rady Faculty of Health Sciences, University of Manitoba, Canada
| | - Qiang Yu
- Department of Human Anatomy and Cell Science, Max Rady College of Medicine, Rady Faculty of Health Sciences, University of Manitoba, Canada
| | - Nitesh Sanghai
- College of Pharmacy, Rady Faculty of Health Science, University of Manitoba, Canada
| | - Kashfia Shafiq
- Department of Human Anatomy and Cell Science, Max Rady College of Medicine, Rady Faculty of Health Sciences, University of Manitoba, Canada
| | - Meiyu Li
- Department of Forensic Medicine, Hebei North University, Zhangjiakou, China
| | - Xin Jiao
- Department of Forensic Medicine, Hebei North University, Zhangjiakou, China
| | - Donghui Na
- Department of Forensic Medicine, Hebei North University, Zhangjiakou, China
| | - Guohui Zhang
- Department of Forensic Medicine, Hebei North University, Zhangjiakou, China.
| | - Jiming Kong
- Department of Human Anatomy and Cell Science, Max Rady College of Medicine, Rady Faculty of Health Sciences, University of Manitoba, Canada.
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8
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Abdellatif M, Rainer PP, Sedej S, Kroemer G. Hallmarks of cardiovascular ageing. Nat Rev Cardiol 2023; 20:754-777. [PMID: 37193857 DOI: 10.1038/s41569-023-00881-3] [Citation(s) in RCA: 46] [Impact Index Per Article: 46.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 04/21/2023] [Indexed: 05/18/2023]
Abstract
Normal circulatory function is a key determinant of disease-free life expectancy (healthspan). Indeed, pathologies affecting the cardiovascular system, which are growing in prevalence, are the leading cause of global morbidity, disability and mortality, whereas the maintenance of cardiovascular health is necessary to promote both organismal healthspan and lifespan. Therefore, cardiovascular ageing might precede or even underlie body-wide, age-related health deterioration. In this Review, we posit that eight molecular hallmarks are common denominators in cardiovascular ageing, namely disabled macroautophagy, loss of proteostasis, genomic instability (in particular, clonal haematopoiesis of indeterminate potential), epigenetic alterations, mitochondrial dysfunction, cell senescence, dysregulated neurohormonal signalling and inflammation. We also propose a hierarchical order that distinguishes primary (upstream) from antagonistic and integrative (downstream) hallmarks of cardiovascular ageing. Finally, we discuss how targeting each of the eight hallmarks might be therapeutically exploited to attenuate residual cardiovascular risk in older individuals.
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Affiliation(s)
- Mahmoud Abdellatif
- Department of Cardiology, Medical University of Graz, Graz, Austria.
- Centre de Recherche des Cordeliers, Equipe labellisée par la Ligue contre le cancer, Université de Paris, Sorbonne Université, Inserm U1138, Institut Universitaire de France, Paris, France.
- Metabolomics and Cell Biology Platforms, Institut Gustave Roussy, Villejuif, France.
- BioTechMed Graz, Graz, Austria.
| | - Peter P Rainer
- Department of Cardiology, Medical University of Graz, Graz, Austria
- BioTechMed Graz, Graz, Austria
| | - Simon Sedej
- Department of Cardiology, Medical University of Graz, Graz, Austria
- BioTechMed Graz, Graz, Austria
- Institute of Physiology, Faculty of Medicine, University of Maribor, Maribor, Slovenia
| | - Guido Kroemer
- Centre de Recherche des Cordeliers, Equipe labellisée par la Ligue contre le cancer, Université de Paris, Sorbonne Université, Inserm U1138, Institut Universitaire de France, Paris, France.
- Metabolomics and Cell Biology Platforms, Institut Gustave Roussy, Villejuif, France.
- Institut du Cancer Paris CARPEM, Department of Biology, Hôpital Européen Georges Pompidou, AP-HP, Paris, France.
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9
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Reid K, Daniels EG, Vasam G, Kamble R, Janssens GE, Hu IM, Green AE, Houtkooper RH, Menzies KJ. Reducing mitochondrial ribosomal gene expression does not alter metabolic health or lifespan in mice. Sci Rep 2023; 13:8391. [PMID: 37225705 PMCID: PMC10209074 DOI: 10.1038/s41598-023-35196-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Accepted: 05/14/2023] [Indexed: 05/26/2023] Open
Abstract
Maintaining mitochondrial function is critical to an improved healthspan and lifespan. Introducing mild stress by inhibiting mitochondrial translation invokes the mitochondrial unfolded protein response (UPRmt) and increases lifespan in several animal models. Notably, lower mitochondrial ribosomal protein (MRP) expression also correlates with increased lifespan in a reference population of mice. In this study, we tested whether partially reducing the gene expression of a critical MRP, Mrpl54, reduced mitochondrial DNA-encoded protein content, induced the UPRmt, and affected lifespan or metabolic health using germline heterozygous Mrpl54 mice. Despite reduced Mrpl54 expression in multiple organs and a reduction in mitochondrial-encoded protein expression in myoblasts, we identified few significant differences between male or female Mrpl54+/- and wild type mice in initial body composition, respiratory parameters, energy intake and expenditure, or ambulatory motion. We also observed no differences in glucose or insulin tolerance, treadmill endurance, cold tolerance, heart rate, or blood pressure. There were no differences in median life expectancy or maximum lifespan. Overall, we demonstrate that genetic manipulation of Mrpl54 expression reduces mitochondrial-encoded protein content but is not sufficient to improve healthspan in otherwise healthy and unstressed mice.
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Affiliation(s)
- Kim Reid
- Department of Biology and Ottawa Institute of Systems Biology, University of Ottawa, 30 Marie Curie Private, Ottawa, ON, Canada
- Department of Biochemistry, Microbiology and Immunology, Faculty of Medicine, Ottawa Institute of Systems Biology and the Éric Poulin Centre for Neuromuscular Disease, University of Ottawa, Ottawa, ON, Canada
| | - Eileen G Daniels
- Laboratory Genetic Metabolic Diseases, Amsterdam UMC Location University of Amsterdam, Meibergdreef 9, 1105 AZ, Amsterdam, The Netherlands
- Amsterdam Gastroenterology Endocrinology and Metabolism Institute, Amsterdam, The Netherlands
| | - Goutham Vasam
- Interdisciplinary School of Health Sciences, University of Ottawa, 451 Smyth Road, Ottawa, ON, K1H 8M5, Canada
| | - Rashmi Kamble
- Laboratory Genetic Metabolic Diseases, Amsterdam UMC Location University of Amsterdam, Meibergdreef 9, 1105 AZ, Amsterdam, The Netherlands
| | - Georges E Janssens
- Laboratory Genetic Metabolic Diseases, Amsterdam UMC Location University of Amsterdam, Meibergdreef 9, 1105 AZ, Amsterdam, The Netherlands
- Amsterdam Gastroenterology Endocrinology and Metabolism Institute, Amsterdam, The Netherlands
| | - Iman M Hu
- Laboratory Genetic Metabolic Diseases, Amsterdam UMC Location University of Amsterdam, Meibergdreef 9, 1105 AZ, Amsterdam, The Netherlands
- Amsterdam Gastroenterology Endocrinology and Metabolism Institute, Amsterdam, The Netherlands
| | - Alexander E Green
- Interdisciplinary School of Health Sciences, University of Ottawa, 451 Smyth Road, Ottawa, ON, K1H 8M5, Canada
- Department of Biochemistry, Microbiology and Immunology, Faculty of Medicine, Ottawa Institute of Systems Biology and the Éric Poulin Centre for Neuromuscular Disease, University of Ottawa, Ottawa, ON, Canada
| | - Riekelt H Houtkooper
- Laboratory Genetic Metabolic Diseases, Amsterdam UMC Location University of Amsterdam, Meibergdreef 9, 1105 AZ, Amsterdam, The Netherlands.
- Amsterdam Gastroenterology Endocrinology and Metabolism Institute, Amsterdam, The Netherlands.
- Amsterdam Cardiovascular Sciences Institute, Amsterdam, The Netherlands.
| | - Keir J Menzies
- Interdisciplinary School of Health Sciences, University of Ottawa, 451 Smyth Road, Ottawa, ON, K1H 8M5, Canada.
- Department of Biochemistry, Microbiology and Immunology, Faculty of Medicine, Ottawa Institute of Systems Biology and the Éric Poulin Centre for Neuromuscular Disease, University of Ottawa, Ottawa, ON, Canada.
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10
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Martini H, Passos JF. Cellular senescence: all roads lead to mitochondria. FEBS J 2023; 290:1186-1202. [PMID: 35048548 PMCID: PMC9296701 DOI: 10.1111/febs.16361] [Citation(s) in RCA: 99] [Impact Index Per Article: 99.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Revised: 01/11/2022] [Accepted: 01/18/2022] [Indexed: 01/10/2023]
Abstract
Senescence is a multi-functional cell fate, characterized by an irreversible cell-cycle arrest and a pro-inflammatory phenotype, commonly known as the senescence-associated secretory phenotype (SASP). Emerging evidence indicates that accumulation of senescent cells in multiple tissues drives tissue dysfunction and several age-related conditions. This has spurred the academic community and industry to identify new therapeutic interventions targeting this process. Mitochondrial dysfunction is an often-unappreciated hallmark of cellular senescence which plays important roles not only in the senescence growth arrest but also in the development of the SASP and resistance to cell-death. Here, we review the evidence that supports a role for mitochondria in the development of senescence and describe the underlying mechanisms. Finally, we propose that a detailed road map of mitochondrial biology in senescence will be crucial to guide the future development of senotherapies.
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Affiliation(s)
- Hélène Martini
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN, 55905 USA
- Robert and Arlene Kogod Center on Aging, Mayo Clinic, Rochester, MN, 55905 USA
| | - João F. Passos
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN, 55905 USA
- Robert and Arlene Kogod Center on Aging, Mayo Clinic, Rochester, MN, 55905 USA
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11
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Abdellatif M, Madeo F, Sedej S, Kroemer G. Antagonistic pleiotropy: the example of cardiac insulin-like growth factor signaling, which is essential in youth but detrimental in age. Expert Opin Ther Targets 2023; 27:87-90. [PMID: 36749698 DOI: 10.1080/14728222.2023.2178420] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Mahmoud Abdellatif
- Department of Cardiology, Medical University of Graz, Graz, Austria.,Centre de Recherche des Cordeliers, Equipe labellisée par la Ligue contre le. cancer, Université de Paris, Sorbonne Université, Inserm U1138, Institut Universitaire de France, Paris, France.,Metabolomics and Cell Biology Platforms, Institut Gustave Roussy, Villejuif, France.,BioTechMed Graz, Graz, Austria
| | - Frank Madeo
- BioTechMed Graz, Graz, Austria.,Institute of Molecular Biosciences, University of Graz, Graz, Austria.,Field of Excellence BioHealth, University of Graz, Graz, Austria
| | - Simon Sedej
- Department of Cardiology, Medical University of Graz, Graz, Austria.,BioTechMed Graz, Graz, Austria.,Institute of Physiology, Faculty of Medicine, University of Maribor, Maribor, Slovenia
| | - Guido Kroemer
- Centre de Recherche des Cordeliers, Equipe labellisée par la Ligue contre le. cancer, Université de Paris, Sorbonne Université, Inserm U1138, Institut Universitaire de France, Paris, France.,Metabolomics and Cell Biology Platforms, Institut Gustave Roussy, Villejuif, France.,Department of Biology, Institut du Cancer Paris CARPEM, Hôpital Européen Georges Pompidou, AP-HP, Paris, France
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12
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Urban VS, Cegledi A, Mikala G. Multiple myeloma, a quintessential malignant disease of aging: a geroscience perspective on pathogenesis and treatment. GeroScience 2022; 45:727-746. [PMID: 36508077 PMCID: PMC9742673 DOI: 10.1007/s11357-022-00698-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Accepted: 11/18/2022] [Indexed: 12/14/2022] Open
Abstract
Multiple myeloma (MM) is an incurable plasma cell malignancy, which is predominantly a disease of older adults (the median age at diagnosis is 70 years). The slow progression from asymptomatic stages and the late-onset of MM suggest fundamental differences compared to many other hematopoietic system-related malignancies. The concept discussed in this review is that age-related changes at the level of terminally differentiated plasma cells act as the main risk factors for the development of MM. Epigenetic and genetic changes that characterize both MM development and normal aging are highlighted. The relationships between cellular aging processes, genetic mosaicism in plasma cells, and risk for MM and the stochastic processes contributing to clonal selection and expansion of mutated plasma cells are investigated. In line with the DNA damage accumulation theory of aging, in this review, the evolution of monoclonal gammopathy to symptomatic MM is considered. Therapeutic consequences of age-dependent comorbidities that lead to frailty and have fundamental influence on treatment outcome are described. The importance of considering geriatric states when planning the life-long treatment course of an elderly MM patient in order to achieve maximal therapeutic benefit is emphasized.
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Affiliation(s)
- Veronika S. Urban
- Department of Morphology and Physiology, Faculty of Health Sciences, Semmelweis University, Budapest, Hungary
| | - Andrea Cegledi
- Department of Hematology and Stem Cell Transplantation, South Pest Central Hospital–National Institute for Hematology and Infectious Diseases, Budapest, Hungary
| | - Gabor Mikala
- Department of Hematology and Stem Cell Transplantation, South Pest Central Hospital-National Institute for Hematology and Infectious Diseases, Budapest, Hungary.
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13
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Machihara K, Kageyama S, Oki S, Makino H, Sasaki M, Iwahashi H, Namba T. Lotus germ extract rejuvenates aging fibroblasts via restoration of disrupted proteostasis by the induction of autophagy. Aging (Albany NY) 2022; 14:7662-7691. [PMID: 36170016 PMCID: PMC9596218 DOI: 10.18632/aging.204303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2022] [Accepted: 09/05/2022] [Indexed: 01/18/2023]
Abstract
Cell aging attenuates cellular functions, resulting in time-dependent disruption of cellular homeostasis, which maintains the functions of proteins and organelles. Mitochondria are important organelles responsible for cellular energy production and various metabolic processes, and their dysfunction is strongly related to the progression of cellular aging. Here we demonstrate that disruption of proteostasis attenuates mitochondrial function before the induction of DNA damage signaling by proliferative and replicative cellular aging. We found that lotus (Nelumbo nucifera Gaertn.) germ extract clears abnormal proteins and agglutinates via autophagy-mediated restoration of mitochondrial function and cellular aging phenotypes. Pharmacological analyses revealed that DAPK1 expression was suppressed in aging cells, and lotus germ extract upregulated DAPK1 expression by stimulating the acetylation of histones and then induced autophagy by activating the DAPK1-Beclin1 signaling pathway. Furthermore, treatment of aging fibroblasts with lotus germ extract stimulated collagen production and increased contractile ability in three-dimensional cell culture. Thus, time-dependent accumulation of abnormal proteins and agglutinates suppressed mitochondrial function in cells in the early stage of aging, and reactivation of mitochondrial function by restoring proteostasis rejuvenated aging cells. Lotus germ extract rejuvenates aging fibroblasts via the DAPK1-Beclin1 pathway-induced autophagy to clear abnormal proteins and agglutinates.
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Affiliation(s)
- Kayo Machihara
- Research and Education Faculty, Multidisciplinary Science Cluster, Interdisciplinary Science Unit, Kochi University, Kochi 783-8505, Japan
| | - Sou Kageyama
- Department of Marine Resource Science, Faculty of Agriculture and Marine Science, Kochi University, Kochi 783-8502, Japan
| | - Shoma Oki
- Department of Marine Resource Science, Faculty of Agriculture and Marine Science, Kochi University, Kochi 783-8502, Japan
| | - Hiroki Makino
- Department of Marine Resource Science, Faculty of Agriculture and Marine Science, Kochi University, Kochi 783-8502, Japan
| | - Masamichi Sasaki
- Research Center, Maruzen Pharmaceuticals Co. Ltd., Fukuyama City, Hiroshima 729-3102, Japan
| | - Hiroyasu Iwahashi
- Research Center, Maruzen Pharmaceuticals Co. Ltd., Fukuyama City, Hiroshima 729-3102, Japan
| | - Takushi Namba
- Research and Education Faculty, Multidisciplinary Science Cluster, Interdisciplinary Science Unit, Kochi University, Kochi 783-8505, Japan.,Department of Marine Resource Science, Faculty of Agriculture and Marine Science, Kochi University, Kochi 783-8502, Japan
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14
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Abdellatif M, Eisenberg T, Heberle AM, Thedieck K, Kroemer G, Sedej S. Cardiac PI3K p110α attenuation delays aging and extends lifespan. Cell Stress 2022; 6:72-75. [PMID: 36447531 PMCID: PMC9662025 DOI: 10.15698/cst2022.08.270] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Accepted: 07/28/2022] [Indexed: 11/12/2023] Open
Abstract
Phosphoinositide 3-kinase (PI3K) is a key component of the insulin signaling pathway that controls cellular me-tabolism and growth. Loss-of-function mutations in PI3K signaling and other downstream effectors of the insulin signaling pathway extend the lifespan of various model organisms. However, the pro-longevity effect appears to be sex-specific and young mice with reduced PI3K signaling have increased risk of cardiac disease. Hence, it remains elusive as to whether PI3K inhibition is a valid strategy to delay aging and extend healthspan in humans. We recently demonstrated that reduced PI3K activity in cardiomyocytes delays cardiac growth, causing subnormal contractility and cardiopulmonary functional capacity, as well as increased risk of mortality at young age. In stark contrast, in aged mice, experi-mental attenuation of PI3K signaling reduced the age-dependent decline in cardiac function and extended maximal lifespan, suggesting a biphasic effect of PI3K on cardiac health and survival. The cardiac anti-aging effects of reduced PI3K activity coincided with enhanced oxida-tive phosphorylation and required increased autophagic flux. In humans, explanted failing hearts showed in-creased PI3K signaling, as indicated by increased phos-phorylation of the serine/threonine-protein kinase AKT. Hence, late-life cardiac-specific targeting of PI3K might have a therapeutic potential in cardiac aging and related diseases.
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Affiliation(s)
- Mahmoud Abdellatif
- Department of Cardiology, Medical University of Graz, 8036 Graz, Austria
- Centre de Recherche des Cordeliers, Equipe labellisée par la Ligue contre le cancer, Université de Paris, Sorbonne Université, Inserm U1138, Institut Universitaire de France, Paris 75006, France
- Metabolomics and Cell Biology Platforms, Institut Gustave Roussy, Villejuif 94805, France
- BioTechMed Graz, 8010 Graz, Austria
| | - Tobias Eisenberg
- BioTechMed Graz, 8010 Graz, Austria
- Institute of Molecular Biosciences, NAWI Graz, University of Graz, 8010 Graz, Austria
- Field of Excellence BioHealth, University of Graz, 8010 Graz, Austria
| | - Alexander Martin Heberle
- Institute of Biochemistry and Center for Molecular Biosciences Innsbruck, University of Innsbruck, Innsbruck 6020, Austria
| | - Kathrin Thedieck
- Institute of Biochemistry and Center for Molecular Biosciences Innsbruck, University of Innsbruck, Innsbruck 6020, Austria
- Department of Pediatrics, Section Systems Medicine of Metabolism and Signalingg, University of Groningen, University Medical Center Groningen, Groningen 9700 RB, The Netherlands
- Department for Neuroscience, School of Medicine and Health Sciences, Carl von Ossietzky University Oldenburg, Oldenburg 26129, Germany
| | - Guido Kroemer
- Centre de Recherche des Cordeliers, Equipe labellisée par la Ligue contre le cancer, Université de Paris, Sorbonne Université, Inserm U1138, Institut Universitaire de France, Paris 75006, France
- Metabolomics and Cell Biology Platforms, Institut Gustave Roussy, Villejuif 94805, France
- Institut du Cancer Paris CARPEM, Department of Biology, Hôpital Européen Georges Pompidou, AP-HP, Paris 7015, France
| | - Simon Sedej
- Department of Cardiology, Medical University of Graz, 8036 Graz, Austria
- BioTechMed Graz, 8010 Graz, Austria
- Institute of Physiology, Faculty of Medicine, University of Maribor, 2000 Maribor, Slovenia
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15
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Li J, Wang Z, Li C, Song Y, Wang Y, Bo H, Zhang Y. Impact of Exercise and Aging on Mitochondrial Homeostasis in Skeletal Muscle: Roles of ROS and Epigenetics. Cells 2022; 11:cells11132086. [PMID: 35805170 PMCID: PMC9266156 DOI: 10.3390/cells11132086] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2022] [Revised: 06/22/2022] [Accepted: 06/28/2022] [Indexed: 02/01/2023] Open
Abstract
Aging causes degenerative changes such as epigenetic changes and mitochondrial dysfunction in skeletal muscle. Exercise can upregulate muscle mitochondrial homeostasis and enhance antioxidant capacity and represents an effective treatment to prevent muscle aging. Epigenetic changes such as DNA methylation, histone posttranslational modifications, and microRNA expression are involved in the regulation of exercise-induced adaptive changes in muscle mitochondria. Reactive oxygen species (ROS) play an important role in signaling molecules in exercise-induced muscle mitochondrial health benefits, and strong evidence emphasizes that exercise-induced ROS can regulate gene expression via epigenetic mechanisms. The majority of mitochondrial proteins are imported into mitochondria from the cytosol, so mitochondrial homeostasis is regulated by nuclear epigenetic mechanisms. Exercise can reverse aging-induced changes in myokine expression by modulating epigenetic mechanisms. In this review, we provide an overview of the role of exercise-generated ROS in the regulation of mitochondrial homeostasis mediated by epigenetic mechanisms. In addition, the potential epigenetic mechanisms involved in exercise-induced myokine expression are reviewed.
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Affiliation(s)
- Jialin Li
- Tianjin Key Laboratory of Exercise Physiology and Sports Medicine, Institute of Exercise and Health, Tianjin University of Sport, Tianjin 301617, China; (J.L.); (Z.W.); (C.L.); (Y.S.); (Y.W.)
| | - Zhe Wang
- Tianjin Key Laboratory of Exercise Physiology and Sports Medicine, Institute of Exercise and Health, Tianjin University of Sport, Tianjin 301617, China; (J.L.); (Z.W.); (C.L.); (Y.S.); (Y.W.)
| | - Can Li
- Tianjin Key Laboratory of Exercise Physiology and Sports Medicine, Institute of Exercise and Health, Tianjin University of Sport, Tianjin 301617, China; (J.L.); (Z.W.); (C.L.); (Y.S.); (Y.W.)
| | - Yu Song
- Tianjin Key Laboratory of Exercise Physiology and Sports Medicine, Institute of Exercise and Health, Tianjin University of Sport, Tianjin 301617, China; (J.L.); (Z.W.); (C.L.); (Y.S.); (Y.W.)
| | - Yan Wang
- Tianjin Key Laboratory of Exercise Physiology and Sports Medicine, Institute of Exercise and Health, Tianjin University of Sport, Tianjin 301617, China; (J.L.); (Z.W.); (C.L.); (Y.S.); (Y.W.)
| | - Hai Bo
- Tianjin Key Laboratory of Exercise Physiology and Sports Medicine, Institute of Exercise and Health, Tianjin University of Sport, Tianjin 301617, China; (J.L.); (Z.W.); (C.L.); (Y.S.); (Y.W.)
- Department of Military Training Medicines, Logistics University of Chinese People’s Armed Police Force, Tianjin 300162, China
- Correspondence: (H.B.); (Y.Z.)
| | - Yong Zhang
- Tianjin Key Laboratory of Exercise Physiology and Sports Medicine, Institute of Exercise and Health, Tianjin University of Sport, Tianjin 301617, China; (J.L.); (Z.W.); (C.L.); (Y.S.); (Y.W.)
- Correspondence: (H.B.); (Y.Z.)
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16
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Abdellatif M, Trummer-Herbst V, Heberle AM, Humnig A, Pendl T, Durand S, Cerrato G, Hofer SJ, Islam M, Voglhuber J, Ramos Pittol JM, Kepp O, Hoefler G, Schmidt A, Rainer PP, Scherr D, von Lewinski D, Bisping E, McMullen JR, Diwan A, Eisenberg T, Madeo F, Thedieck K, Kroemer G, Sedej S. Fine-Tuning Cardiac Insulin-Like Growth Factor 1 Receptor Signaling to Promote Health and Longevity. Circulation 2022; 145:1853-1866. [PMID: 35616058 PMCID: PMC9203038 DOI: 10.1161/circulationaha.122.059863] [Citation(s) in RCA: 36] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Accepted: 04/20/2022] [Indexed: 01/24/2023]
Abstract
BACKGROUND The insulin-like growth factor 1 (IGF1) pathway is a key regulator of cellular metabolism and aging. Although its inhibition promotes longevity across species, the effect of attenuated IGF1 signaling on cardiac aging remains controversial. METHODS We performed a lifelong study to assess cardiac health and lifespan in 2 cardiomyocyte-specific transgenic mouse models with enhanced versus reduced IGF1 receptor (IGF1R) signaling. Male mice with human IGF1R overexpression or dominant negative phosphoinositide 3-kinase mutation were examined at different life stages by echocardiography, invasive hemodynamics, and treadmill coupled to indirect calorimetry. In vitro assays included cardiac histology, mitochondrial respiration, ATP synthesis, autophagic flux, and targeted metabolome profiling, and immunoblots of key IGF1R downstream targets in mouse and human explanted failing and nonfailing hearts, as well. RESULTS Young mice with increased IGF1R signaling exhibited superior cardiac function that progressively declined with aging in an accelerated fashion compared with wild-type animals, resulting in heart failure and a reduced lifespan. In contrast, mice with low cardiac IGF1R signaling exhibited inferior cardiac function early in life, but superior cardiac performance during aging, and increased maximum lifespan, as well. Mechanistically, the late-life detrimental effects of IGF1R activation correlated with suppressed autophagic flux and impaired oxidative phosphorylation in the heart. Low IGF1R activity consistently improved myocardial bioenergetics and function of the aging heart in an autophagy-dependent manner. In humans, failing hearts, but not those with compensated hypertrophy, displayed exaggerated IGF1R expression and signaling activity. CONCLUSIONS Our findings indicate that the relationship between IGF1R signaling and cardiac health is not linear, but rather biphasic. Hence, pharmacological inhibitors of the IGF1 pathway, albeit unsuitable for young individuals, might be worth considering in older adults.
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Affiliation(s)
- Mahmoud Abdellatif
- Department of Cardiology (M.A., V.T.-H., A.H., J.V., A.S., P.P.R., D.S., D.v.L. E.B., S.S.), Medical University of Graz, Austria
- Metabolomics and Cell Biology Platforms, Institut Gustave Roussy, Villejuif, France (M.A., S.D., G.C., O.K., G.K.)
- Centre de Recherche des Cordeliers, Equipe labellisée par la Ligue contre le cancer, Université de Paris, Sorbonne Université, INSERM U1138, Institut Universitaire de France (M.A., S.D., G.C., O.K., G.K.)
- BioTechMed Graz, Austria (M.A., S.J.H., J.V., G.H., P.P.R., T.E., F.M., S.S.)
| | - Viktoria Trummer-Herbst
- Department of Cardiology (M.A., V.T.-H., A.H., J.V., A.S., P.P.R., D.S., D.v.L. E.B., S.S.), Medical University of Graz, Austria
| | - Alexander Martin Heberle
- Institute of Biochemistry and Center for Molecular Biosciences Innsbruck, University of Innsbruck, Austria (A.M.H., J.M.R.P., K.T.)
| | - Alina Humnig
- Department of Cardiology (M.A., V.T.-H., A.H., J.V., A.S., P.P.R., D.S., D.v.L. E.B., S.S.), Medical University of Graz, Austria
| | - Tobias Pendl
- Institute of Molecular Biosciences, NAWI Graz (T.P., S.J.H., T.E., F.M.), Washington University School of Medicine, Saint Louis, MO
| | - Sylvère Durand
- Metabolomics and Cell Biology Platforms, Institut Gustave Roussy, Villejuif, France (M.A., S.D., G.C., O.K., G.K.)
- Centre de Recherche des Cordeliers, Equipe labellisée par la Ligue contre le cancer, Université de Paris, Sorbonne Université, INSERM U1138, Institut Universitaire de France (M.A., S.D., G.C., O.K., G.K.)
| | - Giulia Cerrato
- Metabolomics and Cell Biology Platforms, Institut Gustave Roussy, Villejuif, France (M.A., S.D., G.C., O.K., G.K.)
- Centre de Recherche des Cordeliers, Equipe labellisée par la Ligue contre le cancer, Université de Paris, Sorbonne Université, INSERM U1138, Institut Universitaire de France (M.A., S.D., G.C., O.K., G.K.)
| | - Sebastian J. Hofer
- BioTechMed Graz, Austria (M.A., S.J.H., J.V., G.H., P.P.R., T.E., F.M., S.S.)
- Institute of Molecular Biosciences, NAWI Graz (T.P., S.J.H., T.E., F.M.), Washington University School of Medicine, Saint Louis, MO
- Field of Excellence BioHealth (S.J.H., T.E., F.M.), Washington University School of Medicine, Saint Louis, MO
| | - Moydul Islam
- University of Graz, Austria. Department of Chemistry (M.I.), Washington University School of Medicine, Saint Louis, MO
- Center for Cardiovascular Research and Cardiovascular Division, Department of Medicine (M.I., A.D.), Washington University School of Medicine, Saint Louis, MO
| | - Julia Voglhuber
- BioTechMed Graz, Austria (M.A., S.J.H., J.V., G.H., P.P.R., T.E., F.M., S.S.)
| | - José Miguel Ramos Pittol
- Institute of Biochemistry and Center for Molecular Biosciences Innsbruck, University of Innsbruck, Austria (A.M.H., J.M.R.P., K.T.)
| | - Oliver Kepp
- Metabolomics and Cell Biology Platforms, Institut Gustave Roussy, Villejuif, France (M.A., S.D., G.C., O.K., G.K.)
- Centre de Recherche des Cordeliers, Equipe labellisée par la Ligue contre le cancer, Université de Paris, Sorbonne Université, INSERM U1138, Institut Universitaire de France (M.A., S.D., G.C., O.K., G.K.)
| | - Gerald Hoefler
- Diagnostic and Research Center for Molecular BioMedicine, Diagnostic and Research Institute of Pathology (G.H.), Medical University of Graz, Austria
- BioTechMed Graz, Austria (M.A., S.J.H., J.V., G.H., P.P.R., T.E., F.M., S.S.)
| | - Albrecht Schmidt
- Department of Cardiology (M.A., V.T.-H., A.H., J.V., A.S., P.P.R., D.S., D.v.L. E.B., S.S.), Medical University of Graz, Austria
| | - Peter P. Rainer
- Department of Cardiology (M.A., V.T.-H., A.H., J.V., A.S., P.P.R., D.S., D.v.L. E.B., S.S.), Medical University of Graz, Austria
- BioTechMed Graz, Austria (M.A., S.J.H., J.V., G.H., P.P.R., T.E., F.M., S.S.)
| | - Daniel Scherr
- Department of Cardiology (M.A., V.T.-H., A.H., J.V., A.S., P.P.R., D.S., D.v.L. E.B., S.S.), Medical University of Graz, Austria
| | - Dirk von Lewinski
- Department of Cardiology (M.A., V.T.-H., A.H., J.V., A.S., P.P.R., D.S., D.v.L. E.B., S.S.), Medical University of Graz, Austria
| | - Egbert Bisping
- Department of Cardiology (M.A., V.T.-H., A.H., J.V., A.S., P.P.R., D.S., D.v.L. E.B., S.S.), Medical University of Graz, Austria
| | - Julie R. McMullen
- Baker Heart and Diabetes Institute, Melbourne, Victoria, Australia (J.R.M.)
| | - Abhinav Diwan
- Center for Cardiovascular Research and Cardiovascular Division, Department of Medicine (M.I., A.D.), Washington University School of Medicine, Saint Louis, MO
- John Cochran Veterans Affairs Medical Center, Saint Louis, MO (A.D.)
| | - Tobias Eisenberg
- BioTechMed Graz, Austria (M.A., S.J.H., J.V., G.H., P.P.R., T.E., F.M., S.S.)
- Institute of Molecular Biosciences, NAWI Graz (T.P., S.J.H., T.E., F.M.), Washington University School of Medicine, Saint Louis, MO
- Field of Excellence BioHealth (S.J.H., T.E., F.M.), Washington University School of Medicine, Saint Louis, MO
| | - Frank Madeo
- BioTechMed Graz, Austria (M.A., S.J.H., J.V., G.H., P.P.R., T.E., F.M., S.S.)
- Institute of Molecular Biosciences, NAWI Graz (T.P., S.J.H., T.E., F.M.), Washington University School of Medicine, Saint Louis, MO
- Field of Excellence BioHealth (S.J.H., T.E., F.M.), Washington University School of Medicine, Saint Louis, MO
| | - Kathrin Thedieck
- Institute of Biochemistry and Center for Molecular Biosciences Innsbruck, University of Innsbruck, Austria (A.M.H., J.M.R.P., K.T.)
- Department of Pediatrics, Section Systems Medicine of Metabolism and Signaling, University of Groningen, University Medical Center Groningen, The Netherlands (K.T.)
- Department for Neuroscience, School of Medicine and Health Sciences, Carl von Ossietzky University Oldenburg, Germany (K.T.)
| | - Guido Kroemer
- Metabolomics and Cell Biology Platforms, Institut Gustave Roussy, Villejuif, France (M.A., S.D., G.C., O.K., G.K.)
- Centre de Recherche des Cordeliers, Equipe labellisée par la Ligue contre le cancer, Université de Paris, Sorbonne Université, INSERM U1138, Institut Universitaire de France (M.A., S.D., G.C., O.K., G.K.)
- Institut du Cancer Paris CARPEM, Department of Biology, Hôpital Européen Georges Pompidou, AP-HP, France (G.K.)
| | - Simon Sedej
- Department of Cardiology (M.A., V.T.-H., A.H., J.V., A.S., P.P.R., D.S., D.v.L. E.B., S.S.), Medical University of Graz, Austria
- BioTechMed Graz, Austria (M.A., S.J.H., J.V., G.H., P.P.R., T.E., F.M., S.S.)
- Institute of Physiology, Faculty of Medicine, University of Maribor, Slovenia (S.S.)
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Abdellatif M, Bugger H, Kroemer G, Sedej S. NAD + and Vascular Dysfunction: From Mechanisms to Therapeutic Opportunities. J Lipid Atheroscler 2022; 11:111-132. [PMID: 35656147 PMCID: PMC9133775 DOI: 10.12997/jla.2022.11.2.111] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2022] [Revised: 03/11/2022] [Accepted: 03/15/2022] [Indexed: 11/09/2022] Open
Abstract
Nicotinamide adenine dinucleotide (NAD+) is an essential and pleiotropic coenzyme involved not only in cellular energy metabolism, but also in cell signaling, epigenetic regulation, and post-translational protein modifications. Vascular disease risk factors are associated with aberrant NAD+ metabolism. Conversely, the therapeutic increase of NAD+ levels through the administration of NAD+ precursors or inhibitors of NAD+-consuming enzymes reduces chronic low-grade inflammation, reactivates autophagy and mitochondrial biogenesis, and enhances oxidative metabolism in vascular cells of humans and rodents with vascular pathologies. As such, NAD+ has emerged as a potential target for combatting age-related cardiovascular and cerebrovascular disorders. This review discusses NAD+-regulated mechanisms critical for vascular health and summarizes new advances in NAD+ research directly related to vascular aging and disease, including hypertension, atherosclerosis, coronary artery disease, and aortic aneurysms. Finally, we enumerate challenges and opportunities for NAD+ repletion therapy while anticipating the future of this exciting research field, which will have a major impact on vascular medicine.
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Affiliation(s)
- Mahmoud Abdellatif
- Department of Cardiology, Medical University of Graz, Graz, Austria
- Metabolomics and Cell Biology Platforms, Institut Gustave Roussy, Villejuif, France
- Centre de Recherche des Cordeliers, Equipe Labellisée par la Ligue Contre le Cancer, Université de Paris, Sorbonne Université, INSERM U1138, Institut Universitaire de France, Paris, France
| | - Heiko Bugger
- Department of Cardiology, Medical University of Graz, Graz, Austria
| | - Guido Kroemer
- Metabolomics and Cell Biology Platforms, Institut Gustave Roussy, Villejuif, France
- Centre de Recherche des Cordeliers, Equipe Labellisée par la Ligue Contre le Cancer, Université de Paris, Sorbonne Université, INSERM U1138, Institut Universitaire de France, Paris, France
- Institut du Cancer Paris CARPEM, Department of Biology, Hôpital Européen Georges Pompidou, AP-HP, Paris, France
| | - Simon Sedej
- Department of Cardiology, Medical University of Graz, Graz, Austria
- BioTechMed Graz, Graz, Austria
- Institute of Physiology, Faculty of Medicine, University of Maribor, Maribor, Slovenia
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18
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Goedeke L, Murt KN, Di Francesco A, Camporez JP, Nasiri AR, Wang Y, Zhang X, Cline GW, de Cabo R, Shulman GI. Sex- and strain-specific effects of mitochondrial uncoupling on age-related metabolic diseases in high-fat diet-fed mice. Aging Cell 2022; 21:e13539. [PMID: 35088525 PMCID: PMC8844126 DOI: 10.1111/acel.13539] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2021] [Revised: 11/17/2021] [Accepted: 12/03/2021] [Indexed: 12/12/2022] Open
Abstract
Mild uncoupling of oxidative phosphorylation is an intrinsic property of all mitochondria and may have evolved to protect cells against the production of damaging reactive oxygen species. Therefore, compounds that enhance mitochondrial uncoupling are potentially attractive anti‐aging therapies; however, chronic ingestion is associated with a number of unwanted side effects. We have previously developed a controlled‐release mitochondrial protonophore (CRMP) that is functionally liver‐directed and promotes oxidation of hepatic triglycerides by causing a subtle sustained increase in hepatic mitochondrial inefficiency. Here, we sought to leverage the higher therapeutic index of CRMP to test whether mild mitochondrial uncoupling in a liver‐directed fashion could reduce oxidative damage and improve age‐related metabolic disease and lifespan in diet‐induced obese mice. Oral administration of CRMP (20 mg/[kg‐day] × 4 weeks) reduced hepatic lipid content, protein kinase C epsilon activation, and hepatic insulin resistance in aged (74‐week‐old) high‐fat diet (HFD)‐fed C57BL/6J male mice, independently of changes in body weight, whole‐body energy expenditure, food intake, or markers of hepatic mitochondrial biogenesis. CRMP treatment was also associated with a significant reduction in hepatic lipid peroxidation, protein carbonylation, and inflammation. Importantly, long‐term (49 weeks) hepatic mitochondrial uncoupling initiated late in life (94–104 weeks), in conjugation with HFD feeding, protected mice against neoplastic disorders, including hepatocellular carcinoma (HCC), in a strain and sex‐specific manner. Taken together, these studies illustrate the complex variation of aging and provide important proof‐of‐concept data to support further studies investigating the use of liver‐directed mitochondrial uncouplers to promote healthy aging in humans.
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Affiliation(s)
- Leigh Goedeke
- Department of Internal Medicine Yale School of Medicine New Haven Connecticut USA
| | - Kelsey N. Murt
- Translational Gerontology Branch Intramural Research Program National Institute on Aging, NIH Baltimore Maryland USA
| | - Andrea Di Francesco
- Translational Gerontology Branch Intramural Research Program National Institute on Aging, NIH Baltimore Maryland USA
| | - João Paulo Camporez
- Department of Internal Medicine Yale School of Medicine New Haven Connecticut USA
- Department of Physiology Ribeirao Preto School of Medicine University of Sao Paulo São Paulo Brazil
| | - Ali R. Nasiri
- Department of Internal Medicine Yale School of Medicine New Haven Connecticut USA
| | - Yongliang Wang
- Department of Internal Medicine Yale School of Medicine New Haven Connecticut USA
| | - Xian‐Man Zhang
- Department of Internal Medicine Yale School of Medicine New Haven Connecticut USA
| | - Gary W. Cline
- Department of Internal Medicine Yale School of Medicine New Haven Connecticut USA
| | - Rafael de Cabo
- Translational Gerontology Branch Intramural Research Program National Institute on Aging, NIH Baltimore Maryland USA
| | - Gerald I. Shulman
- Department of Internal Medicine Yale School of Medicine New Haven Connecticut USA
- Department of Cellular and Molecular Physiology Yale School of Medicine New Haven Connecticut USA
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19
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Lee YH, Park JY, Lee H, Song ES, Kuk MU, Joo J, Oh S, Kwon HW, Park JT, Park SC. Targeting Mitochondrial Metabolism as a Strategy to Treat Senescence. Cells 2021; 10:cells10113003. [PMID: 34831224 PMCID: PMC8616445 DOI: 10.3390/cells10113003] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2021] [Revised: 11/02/2021] [Accepted: 11/02/2021] [Indexed: 12/13/2022] Open
Abstract
Mitochondria are one of organelles that undergo significant changes associated with senescence. An increase in mitochondrial size is observed in senescent cells, and this increase is ascribed to the accumulation of dysfunctional mitochondria that generate excessive reactive oxygen species (ROS). Such dysfunctional mitochondria are prime targets for ROS-induced damage, which leads to the deterioration of oxidative phosphorylation and increased dependence on glycolysis as an energy source. Based on findings indicating that senescent cells exhibit mitochondrial metabolic alterations, a strategy to induce mitochondrial metabolic reprogramming has been proposed to treat aging and age-related diseases. In this review, we discuss senescence-related mitochondrial changes and consequent mitochondrial metabolic alterations. We assess the significance of mitochondrial metabolic reprogramming for senescence regulation and propose the appropriate control of mitochondrial metabolism to ameliorate senescence. Learning how to regulate mitochondrial metabolism will provide knowledge for the control of aging and age-related pathologies. Further research focusing on mitochondrial metabolic reprogramming will be an important guide for the development of anti-aging therapies, and will provide novel strategies for anti-aging interventions.
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Affiliation(s)
- Yun Haeng Lee
- Division of Life Sciences, College of Life Sciences and Bioengineering, Incheon National University, Incheon 22012, Korea; (Y.H.L.); (J.Y.P.); (H.L.); (E.S.S.); (M.U.K.); (J.J.)
| | - Ji Yun Park
- Division of Life Sciences, College of Life Sciences and Bioengineering, Incheon National University, Incheon 22012, Korea; (Y.H.L.); (J.Y.P.); (H.L.); (E.S.S.); (M.U.K.); (J.J.)
| | - Haneur Lee
- Division of Life Sciences, College of Life Sciences and Bioengineering, Incheon National University, Incheon 22012, Korea; (Y.H.L.); (J.Y.P.); (H.L.); (E.S.S.); (M.U.K.); (J.J.)
| | - Eun Seon Song
- Division of Life Sciences, College of Life Sciences and Bioengineering, Incheon National University, Incheon 22012, Korea; (Y.H.L.); (J.Y.P.); (H.L.); (E.S.S.); (M.U.K.); (J.J.)
| | - Myeong Uk Kuk
- Division of Life Sciences, College of Life Sciences and Bioengineering, Incheon National University, Incheon 22012, Korea; (Y.H.L.); (J.Y.P.); (H.L.); (E.S.S.); (M.U.K.); (J.J.)
| | - Junghyun Joo
- Division of Life Sciences, College of Life Sciences and Bioengineering, Incheon National University, Incheon 22012, Korea; (Y.H.L.); (J.Y.P.); (H.L.); (E.S.S.); (M.U.K.); (J.J.)
| | - Sekyung Oh
- Department of Medical Sciences, Catholic Kwandong University College of Medicine, Incheon 22711, Korea;
| | - Hyung Wook Kwon
- Division of Life Sciences, College of Life Sciences and Bioengineering, Incheon National University, Incheon 22012, Korea; (Y.H.L.); (J.Y.P.); (H.L.); (E.S.S.); (M.U.K.); (J.J.)
- Correspondence: (H.W.K.); (J.T.P.); ; (S.C.P.); Tel.: +82-32-835-8090 (H.W.K.); +82-32-835-8841 (J.T.P.); +82-10-5495-9200 (S.C.P.)
| | - Joon Tae Park
- Division of Life Sciences, College of Life Sciences and Bioengineering, Incheon National University, Incheon 22012, Korea; (Y.H.L.); (J.Y.P.); (H.L.); (E.S.S.); (M.U.K.); (J.J.)
- Correspondence: (H.W.K.); (J.T.P.); ; (S.C.P.); Tel.: +82-32-835-8090 (H.W.K.); +82-32-835-8841 (J.T.P.); +82-10-5495-9200 (S.C.P.)
| | - Sang Chul Park
- The Future Life & Society Research Center, Chonnam National University, Gwangju 61186, Korea
- Correspondence: (H.W.K.); (J.T.P.); ; (S.C.P.); Tel.: +82-32-835-8090 (H.W.K.); +82-32-835-8841 (J.T.P.); +82-10-5495-9200 (S.C.P.)
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Voglhuber J, Ljubojevic-Holzer S, Abdellatif M, Sedej S. Targeting Cardiovascular Risk Factors Through Dietary Adaptations and Caloric Restriction Mimetics. Front Nutr 2021; 8:758058. [PMID: 34660673 PMCID: PMC8514725 DOI: 10.3389/fnut.2021.758058] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2021] [Accepted: 09/07/2021] [Indexed: 12/12/2022] Open
Abstract
The average human life expectancy continues to rise globally and so does the prevalence and absolute burden of cardiovascular disease. Dietary restriction promotes longevity and improves various cardiovascular risk factors, including hypertension, obesity, diabetes mellitus, and metabolic syndrome. However, low adherence to caloric restriction renders this stringent dietary intervention challenging to adopt as a standard practice for cardiovascular disease prevention. Hence, alternative eating patterns and strategies that recapitulate the salutary benefits of caloric restriction are under intense investigation. Here, we first provide an overview of alternative interventions, including intermittent fasting, alternate-day fasting and the Mediterranean diet, along with their cardiometabolic effects in animal models and humans. We then present emerging pharmacological alternatives, including spermidine, NAD+ precursors, resveratrol, and metformin, as promising caloric restriction mimetics, and briefly touch on the mechanisms underpinning their cardiometabolic and health-promoting effects. We conclude that implementation of feasible dietary approaches holds the promise to attenuate the burden of cardiovascular disease and facilitate healthy aging in humans.
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Affiliation(s)
- Julia Voglhuber
- Department of Cardiology, Medical University of Graz, Graz, Austria
- BioTechMed Graz, Graz, Austria
| | - Senka Ljubojevic-Holzer
- Department of Cardiology, Medical University of Graz, Graz, Austria
- BioTechMed Graz, Graz, Austria
| | - Mahmoud Abdellatif
- Department of Cardiology, Medical University of Graz, Graz, Austria
- Centre de Recherche des Cordeliers, Equipe labellisée par La Ligue Contre le Cancer, Université de Paris, Sorbonne Université, INSERM U1138, Institute Universitaire de France, Paris, France
| | - Simon Sedej
- Department of Cardiology, Medical University of Graz, Graz, Austria
- BioTechMed Graz, Graz, Austria
- Faculty of Medicine, Institute of Physiology, University of Maribor, Maribor, Slovenia
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21
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Muench NA, Patel S, Maes ME, Donahue RJ, Ikeda A, Nickells RW. The Influence of Mitochondrial Dynamics and Function on Retinal Ganglion Cell Susceptibility in Optic Nerve Disease. Cells 2021; 10:cells10071593. [PMID: 34201955 PMCID: PMC8306483 DOI: 10.3390/cells10071593] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Revised: 06/15/2021] [Accepted: 06/17/2021] [Indexed: 12/30/2022] Open
Abstract
The important roles of mitochondrial function and dysfunction in the process of neurodegeneration are widely acknowledged. Retinal ganglion cells (RGCs) appear to be a highly vulnerable neuronal cell type in the central nervous system with respect to mitochondrial dysfunction but the actual reasons for this are still incompletely understood. These cells have a unique circumstance where unmyelinated axons must bend nearly 90° to exit the eye and then cross a translaminar pressure gradient before becoming myelinated in the optic nerve. This region, the optic nerve head, contains some of the highest density of mitochondria present in these cells. Glaucoma represents a perfect storm of events occurring at this location, with a combination of changes in the translaminar pressure gradient and reassignment of the metabolic support functions of supporting glia, which appears to apply increased metabolic stress to the RGC axons leading to a failure of axonal transport mechanisms. However, RGCs themselves are also extremely sensitive to genetic mutations, particularly in genes affecting mitochondrial dynamics and mitochondrial clearance. These mutations, which systemically affect the mitochondria in every cell, often lead to an optic neuropathy as the sole pathologic defect in affected patients. This review summarizes knowledge of mitochondrial structure and function, the known energy demands of neurons in general, and places these in the context of normal and pathological characteristics of mitochondria attributed to RGCs.
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Affiliation(s)
- Nicole A. Muench
- Department of Ophthalmology and Visual Sciences, University of Wisconsin-Madison, Madison, WI 53706, USA; (N.A.M.); (S.P.); (R.J.D.)
| | - Sonia Patel
- Department of Ophthalmology and Visual Sciences, University of Wisconsin-Madison, Madison, WI 53706, USA; (N.A.M.); (S.P.); (R.J.D.)
| | - Margaret E. Maes
- Institute of Science and Technology Austria, 3400 Klosterneuburg, Austria;
| | - Ryan J. Donahue
- Department of Ophthalmology and Visual Sciences, University of Wisconsin-Madison, Madison, WI 53706, USA; (N.A.M.); (S.P.); (R.J.D.)
- Boston Children’s Hospital, Harvard Medical School, Harvard University, Boston, MA 02115, USA
| | - Akihiro Ikeda
- Department of Medical Genetics, University of Wisconsin-Madison, Madison, WI 53706, USA;
- McPherson Eye Research Institute, University of Wisconsin-Madison, Madison, WI 53705, USA
| | - Robert W. Nickells
- Department of Ophthalmology and Visual Sciences, University of Wisconsin-Madison, Madison, WI 53706, USA; (N.A.M.); (S.P.); (R.J.D.)
- McPherson Eye Research Institute, University of Wisconsin-Madison, Madison, WI 53705, USA
- Correspondence:
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22
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Exercise-induced sudden cardiac death is caused by mitochondrio-nuclear translocation of AIF. Cell Death Dis 2021; 12:383. [PMID: 33837175 PMCID: PMC8035199 DOI: 10.1038/s41419-021-03677-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Revised: 03/24/2021] [Accepted: 03/24/2021] [Indexed: 12/03/2022]
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