1
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Schwartzman JD, McCall M, Ghattas Y, Pugazhendhi AS, Wei F, Ngo C, Ruiz J, Seal S, Coathup MJ. Multifunctional scaffolds for bone repair following age-related biological decline: Promising prospects for smart biomaterial-driven technologies. Biomaterials 2024; 311:122683. [PMID: 38954959 DOI: 10.1016/j.biomaterials.2024.122683] [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: 04/08/2024] [Revised: 06/09/2024] [Accepted: 06/23/2024] [Indexed: 07/04/2024]
Abstract
The repair of large bone defects due to trauma, disease, and infection can be exceptionally challenging in the elderly. Despite best clinical practice, bone regeneration within contemporary, surgically implanted synthetic scaffolds is often problematic, inconsistent, and insufficient where additional osteobiological support is required to restore bone. Emergent smart multifunctional biomaterials may drive important and dynamic cellular crosstalk that directly targets, signals, stimulates, and promotes an innate bone repair response following age-related biological decline and when in the presence of disease or infection. However, their role remains largely undetermined. By highlighting their mechanism/s and mode/s of action, this review spotlights smart technologies that favorably align in their conceivable ability to directly target and enhance bone repair and thus are highly promising for future discovery for use in the elderly. The four degrees of interactive scaffold smartness are presented, with a focus on bioactive, bioresponsive, and the yet-to-be-developed autonomous scaffold activity. Further, cell- and biomolecular-assisted approaches were excluded, allowing for contemporary examination of the capabilities, demands, vision, and future requisites of next-generation biomaterial-induced technologies only. Data strongly supports that smart scaffolds hold significant promise in the promotion of bone repair in patients with a reduced osteobiological response. Importantly, many techniques have yet to be tested in preclinical models of aging. Thus, greater clarity on their proficiency to counteract the many unresolved challenges within the scope of aging bone is highly warranted and is arguably the next frontier in the field. This review demonstrates that the use of multifunctional smart synthetic scaffolds with an engineered strategy to circumvent the biological insufficiencies associated with aging bone is a viable route for achieving next-generation therapeutic success in the elderly population.
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Affiliation(s)
| | - Max McCall
- College of Medicine, University of Central Florida, Orlando, FL, USA
| | - Yasmine Ghattas
- College of Medicine, University of Central Florida, Orlando, FL, USA
| | - Abinaya Sindu Pugazhendhi
- College of Medicine, University of Central Florida, Orlando, FL, USA; Biionix Cluster, University of Central Florida, Orlando, FL, USA
| | - Fei Wei
- College of Medicine, University of Central Florida, Orlando, FL, USA; Biionix Cluster, University of Central Florida, Orlando, FL, USA
| | - Christopher Ngo
- College of Medicine, University of Central Florida, Orlando, FL, USA; Biionix Cluster, University of Central Florida, Orlando, FL, USA
| | - Jonathan Ruiz
- College of Medicine, University of Central Florida, Orlando, FL, USA
| | - Sudipta Seal
- College of Medicine, University of Central Florida, Orlando, FL, USA; Biionix Cluster, University of Central Florida, Orlando, FL, USA; Advanced Materials Processing and Analysis Centre, Nanoscience Technology Center (NSTC), Materials Science and Engineering, College of Medicine, University of Central Florida, USA, Orlando, FL
| | - Melanie J Coathup
- College of Medicine, University of Central Florida, Orlando, FL, USA; Biionix Cluster, University of Central Florida, Orlando, FL, USA.
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2
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David E, Wolfson M, Muradian KK, Fraifeld VE. The potential longevity-promoting hypoxic-hypercapnic environment as a measure for radioprotection. Biogerontology 2024; 25:891-898. [PMID: 39162980 DOI: 10.1007/s10522-024-10129-3] [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: 07/17/2024] [Accepted: 08/09/2024] [Indexed: 08/21/2024]
Abstract
Many biological mechanisms of aging well converge with radiation's biological effects. We used scientific insights from the field of aging to establish a novel hypoxic-hypercapnic environment (HHE) concept for radioprotection. According to this concept, HHE which possesses an anti-aging and longevity-promoting potential, should also act as a radiomitigator and radioprotector. As such, it might contribute greatly to the safety and wellbeing of individuals exposed to high levels of radiation, whether in planned events (e.g. astronauts) or in unplanned events (e.g. first responders in nuclear accidents).
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Affiliation(s)
- Elroei David
- Nuclear Research Center Negev (NRCN), P.O. Box 9001, 8419001, Beer-Sheva, Israel.
| | - Marina Wolfson
- The Shraga Segal Department of Microbiology, Immunology and Genetics, Faculty of Health Sciences, Center for Multidisciplinary Research on Aging, Ben-Gurion University of the Negev, 8410501, Beer Sheva, Israel
| | - Khachik K Muradian
- Department of Aging Biology and Experimental Life Extension, Institute of Gerontology, NAMS of Ukraine, Kiev, 04114, Ukraine
| | - Vadim E Fraifeld
- The Shraga Segal Department of Microbiology, Immunology and Genetics, Faculty of Health Sciences, Center for Multidisciplinary Research on Aging, Ben-Gurion University of the Negev, 8410501, Beer Sheva, Israel
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3
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Wang SN, Shi YC, Lin S, He HF. Particulate matter 2.5 accelerates aging: Exploring cellular senescence and age-related diseases. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2024; 284:116920. [PMID: 39208581 DOI: 10.1016/j.ecoenv.2024.116920] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2024] [Revised: 08/17/2024] [Accepted: 08/20/2024] [Indexed: 09/04/2024]
Abstract
Exposure to Particulate matter 2.5 (PM2.5) accelerates aging, causing declines in tissue and organ function, and leading to diseases such as cardiovascular, neurodegenerative, and musculoskeletal disorders. PM2.5 is a major environmental pollutant and an exogenous pathogen in air pollution that is now recognized as an accelerator of human aging and a predisposing factor for several age-related diseases. In this paper, we seek to elucidate the mechanisms by which PM2.5 induces cellular senescence, such as genomic instability, telomere attrition, epigenetic alterations, loss of proteostasis, and mitochondrial dysfunction, and age-related diseases. Our goal is to increase awareness among researchers within the field of the toxicity of environmental pollutants and to advocate for personal and public health initiatives to curb their production and enhance population protection. Through these endeavors, we aim to promote longevity and health in older adults.
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Affiliation(s)
- Sheng-Nan Wang
- Department of Anesthesiology, the Second Affiliated Hospital of Fujian Medical University, Quanzhou, Fujian Province, China
| | - Yan-Chuan Shi
- Centre of Neurological and Metabolic Research, the Second Affiliated Hospital of Fujian Medical University, Quanzhou, Fujian Province, China; Group of Neuroendocrinology, Garvan Institute of Medical Research, 384 Victoria St, Sydney, Australia; St Vincent's Clinical School, Faculty of Medicine, UNSW Sydney, Australia
| | - Shu Lin
- Centre of Neurological and Metabolic Research, the Second Affiliated Hospital of Fujian Medical University, Quanzhou, Fujian Province, China; Group of Neuroendocrinology, Garvan Institute of Medical Research, 384 Victoria St, Sydney, Australia.
| | - He-Fan He
- Department of Anesthesiology, the Second Affiliated Hospital of Fujian Medical University, Quanzhou, Fujian Province, China.
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4
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Wang X, Zhang C, Su J, Ren S, Wang X, Zhang Y, Yuan Z, He X, Wu X, Li M, Du F, Chen Y, Deng S, Zhao Y, Wang X, Sun Y, Shen J, Ji H, Hou Y, Xiao Z. Rejuvenation Strategy for Inducing and Enhancing Autoimmune Response to Eliminate Senescent Cells. Aging Dis 2024:AD.2024.0579. [PMID: 39122450 DOI: 10.14336/ad.2024.0579] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2024] [Accepted: 07/17/2024] [Indexed: 08/12/2024] Open
Abstract
The process of aging, which involves progressive changes in the body over time, is closely associated with the development of age-related diseases. Cellular senescence is a pivotal hallmark and mechanism of the aging process. The accumulation of senescent cells can significantly contribute to the onset of age-related diseases, thereby compromising overall health. Conversely, the elimination of senescent cells enhances the body's regenerative and reparative capacity, thereby retarding the aging process. Here, we present a brief overview of 12 Hallmarks of aging and subsequently emphasize the potential of immune checkpoint blockade, innate immune cell therapy (including T cells, iNKT cells, macrophages, and NK cells), as well as CAR-T cell therapy for inducing and augmenting immune responses aimed at eliminating senescent cells. In addition to CAR-T cells, we also explore the possibility of engineered immune cells such as CAR-NK and CAR-M cells to eliminate senescent cells. In summary, immunotherapy, as an emerging strategy for the treatment of aging, offers new prospects for age-related research.
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Affiliation(s)
- Xingyue Wang
- Laboratory of Molecular Pharmacology, Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou, China
| | - Chengyu Zhang
- Laboratory of Molecular Pharmacology, Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou, China
| | - Jiahong Su
- Laboratory of Molecular Pharmacology, Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou, China
| | - Siqi Ren
- Laboratory of Molecular Pharmacology, Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou, China
| | - Xiang Wang
- Laboratory of Molecular Pharmacology, Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou, China
| | - Yinping Zhang
- Laboratory of Molecular Pharmacology, Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou, China
| | - Zijun Yuan
- Laboratory of Molecular Pharmacology, Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou, China
| | - Xinyu He
- Laboratory of Molecular Pharmacology, Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou, China
| | - Xu Wu
- Laboratory of Molecular Pharmacology, Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou, China
- Cell Therapy &;amp Cell Drugs of Luzhou Key Laboratory, Luzhou, Sichuan, China
- South Sichuan Institute of Translational Medicine, Luzhou, Sichuan, China
| | - Mingxing Li
- Laboratory of Molecular Pharmacology, Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou, China
- Cell Therapy &;amp Cell Drugs of Luzhou Key Laboratory, Luzhou, Sichuan, China
- South Sichuan Institute of Translational Medicine, Luzhou, Sichuan, China
| | - Fukuan Du
- Laboratory of Molecular Pharmacology, Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou, China
- Cell Therapy &;amp Cell Drugs of Luzhou Key Laboratory, Luzhou, Sichuan, China
- South Sichuan Institute of Translational Medicine, Luzhou, Sichuan, China
| | - Yu Chen
- Laboratory of Molecular Pharmacology, Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou, China
- Cell Therapy &;amp Cell Drugs of Luzhou Key Laboratory, Luzhou, Sichuan, China
- South Sichuan Institute of Translational Medicine, Luzhou, Sichuan, China
| | - Shuai Deng
- Laboratory of Molecular Pharmacology, Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou, China
- Cell Therapy &;amp Cell Drugs of Luzhou Key Laboratory, Luzhou, Sichuan, China
- South Sichuan Institute of Translational Medicine, Luzhou, Sichuan, China
| | - Yueshui Zhao
- Laboratory of Molecular Pharmacology, Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou, China
- Cell Therapy &;amp Cell Drugs of Luzhou Key Laboratory, Luzhou, Sichuan, China
- South Sichuan Institute of Translational Medicine, Luzhou, Sichuan, China
| | - Xiaodong Wang
- Department of Hepatobiliary Disease, The Affiliated Traditional Chinese Medicine Hospital, Southwest Medical University, Luzhou, Sichuan 646000, China
| | - Yuhong Sun
- Laboratory of Molecular Pharmacology, Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou, China
| | - Jing Shen
- Laboratory of Molecular Pharmacology, Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou, China
- Cell Therapy &;amp Cell Drugs of Luzhou Key Laboratory, Luzhou, Sichuan, China
- South Sichuan Institute of Translational Medicine, Luzhou, Sichuan, China
| | - Huijiao Ji
- Laboratory of Molecular Pharmacology, Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou, China
| | - Yunqing Hou
- LongmaTan District People's Hospital of Luzhou City, Luzhou 646600, China
| | - Zhangang Xiao
- Laboratory of Molecular Pharmacology, Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou, China
- Cell Therapy &;amp Cell Drugs of Luzhou Key Laboratory, Luzhou, Sichuan, China
- South Sichuan Institute of Translational Medicine, Luzhou, Sichuan, China
- Department of Pharmacology, School of Pharmacy, Sichuan College of Traditional Chinese Medicine, Mianyang 621000, China
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Liang L, Zheng T, Fan X, Gao Y, Chen X, Wang B, Liu Y, Zhang Y. Rosavin extends lifespan via the insulin/IGF-1 signaling pathway in Caenorhabditis elegans. NAUNYN-SCHMIEDEBERG'S ARCHIVES OF PHARMACOLOGY 2024; 397:5275-5287. [PMID: 38277040 DOI: 10.1007/s00210-024-02952-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2023] [Accepted: 01/10/2024] [Indexed: 01/27/2024]
Abstract
Rosavin, a phenylpropanoid glycoside, is the specific index component and one of the main active components of Rhodiola rosea. Currently, there are few studies describing the antiaging effect of rosavin, and most of them are mainly based on in vitro antioxidant research. Our study aimed to investigate the antiaging activities and mechanisms of rosavin in Caenorhabditis elegans. Using Caenorhabditis elegans as the model, the lifespan of Caenorhabditis elegans under various stressors (heat and juglone) and normal conditions was studied, and the antioxidant activities of rosavin were discussed. To discover the underlying mechanisms, we analyzed daf-16 nuclear localization, the expression of the sod-3p::GFP fusion protein, mRNA levels, and loss-of-function mutants of IIS-associated genes. The results showed that rosavin significantly improved the lifespan of Caenorhabditis elegans under stress and normal conditions. Rosavin can increase the expression and activity of antioxidant enzymes and suppress the generation of malondialdehyde and ROS in nematodes. Additionally, it promotes the nuclear localization of daf-16 and improves the expression of the sod-3 gene in Caenorhabditis elegans. The data revealed that rosavin activated the insulin/IGF-1 signaling pathway by downregulating the upstream components daf-2 and age-1. In summary, these results verify that rosavin could increase the lifespan of Caenorhabditis elegans through the insulin/IGF-1 signaling pathway.
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Affiliation(s)
- Lina Liang
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, 102488, China
- Wuwei Occupational college, Gansu, 733000, China
| | - Tianyu Zheng
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, 102488, China
| | - Xiaoxiao Fan
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, 102488, China
| | - Yating Gao
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, 102488, China
| | - Xu Chen
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, 102488, China
| | - Bo Wang
- Department of Pharmacy, Ningxia Hui Autonomous Region People's Hospital, Yinchuan, 750000, China.
| | - Yonggang Liu
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, 102488, China.
| | - Yuanyuan Zhang
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, 102488, China.
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6
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Yang J, Xu Z, Zheng W, Li Y, Wei Q, Yang L. Identification of the cytoplasmic DNA-Sensing cGAS-STING pathway-mediated gene signatures and molecular subtypes in prostate cancer. BMC Cancer 2024; 24:732. [PMID: 38877472 PMCID: PMC11179326 DOI: 10.1186/s12885-024-12492-3] [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: 04/26/2024] [Accepted: 06/10/2024] [Indexed: 06/16/2024] Open
Abstract
BACKGROUND Considering the age relevance of prostate cancer (PCa) and the involvement of the cGAS-STING pathway in aging and cancer, we aim to classify PCa into distinct molecular subtypes and identify key genes from the novel perspective of the cGAS-STING pathway. It is of significance to guide personalized intervention of cancer-targeting therapy based on genetic evidence. METHODS The 430 patients with PCa from the TCGA database were included. We integrated 29 key genes involved in cGAS-STING pathway and analyzed differentially expressed genes and biochemical recurrence (BCR)-free survival-related genes. The assessments of tumor stemness and heterogeneity and tumor microenvironment (TME) were conducted to reveal potential mechanisms. RESULTS PCa patients were classified into two distinct subtypes using AURKB, TREX1, and STAT6, and subtype 1 had a worse prognosis than subtype 2 (HR: 21.19, p < 0.001). The findings were validated in the MSKCC2010 cohort. Among subtype 1 and subtype 2, the top ten mutation genes were MUC5B, DNAH9, SLC5A10, ZNF462, USP31, SIPA1L3, PLEC, HRAS, MYOM1, and ITGB6. Gene set variation analysis revealed a high enrichment of the E2F target in subtype 1, and gene set enrichment analysis showed significant enrichment of base excision repair, cell cycle, and DNA replication in subtype 1. TME evaluation indicated that subtype 1 had a significantly higher level of T cells follicular helper and a lower level of plasma cells than subtype 2. CONCLUSIONS The molecular subtypes mediated by the cGAS-STING pathway and the genetic risk score may aid in identifying potentially high-risk PCa patients who may benefit from pharmacologic therapies targeting the cGAS-STING pathway.
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Affiliation(s)
- Jie Yang
- Department of Urology, West China Hospital of Sichuan University, Sichuan Province, Chengdu, China
| | - Zihan Xu
- China Agricultural University, Beijing, 100083, China
| | - Weitao Zheng
- Department of Urology, West China Hospital of Sichuan University, Sichuan Province, Chengdu, China
| | - Yifan Li
- Department of Urology, West China Hospital of Sichuan University, Sichuan Province, Chengdu, China
| | - Qiang Wei
- Department of Urology, West China Hospital of Sichuan University, Sichuan Province, Chengdu, China.
| | - Lu Yang
- Department of Urology, West China Hospital of Sichuan University, Sichuan Province, Chengdu, China.
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7
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Campisi M, Cannella L, Pavanello S. Cosmic chronometers: Is spaceflight a catalyst for biological ageing? Ageing Res Rev 2024; 95:102227. [PMID: 38346506 DOI: 10.1016/j.arr.2024.102227] [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: 08/21/2023] [Revised: 01/05/2024] [Accepted: 02/06/2024] [Indexed: 02/22/2024]
Abstract
Astronauts returning from space missions often exhibit health issues mirroring age-related conditions, suggesting spaceflight as a potential driver of biological ageing and age-related diseases. To unravel the underlying mechanisms of these conditions, this comprehensive review explores the impact of the space "exposome" on the twelve hallmarks of ageing. Through a meticulous analysis encompassing both space environments and terrestrial analogs, we aim to decipher how different conditions influence ageing hallmarks. Utilizing PubMed, we identified 189 studies and 60 meet screening criteria. Research on biological ageing in space has focused on genomic instability, chronic inflammation, and deregulated nutrient sensing. Spaceflight consistently induces genomic instability, linked to prolonged exposure to ionizing radiation, triggers pro-inflammatory and immune alterations, resembling conditions in isolated simulations. Nutrient sensing pathways reveal increased systemic insulin-like growth-factor-1. Microbiome studies indicate imbalances favoring opportunistic species during spaceflight. Telomere dynamics present intriguing patterns, with lengthening during missions and rapid shortening upon return. Despite a pro-ageing trend, some protective mechanisms emerge. Countermeasures, encompassing dietary adjustments, prebiotics, postbiotics, symbiotics, tailored exercises, meditation, and anti-inflammatory supplements, exhibit potential. Spaceflight's impact on ageing is intricate, with diverse findings challenging established beliefs. Multidisciplinary studies provide guidance for future research in this field.
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Affiliation(s)
- Manuela Campisi
- Occupational Medicine, Department of Cardio-Thoraco-Vascular Sciences and Public Health, University of Padua, Padua, Italy
| | - Luana Cannella
- Occupational Medicine, Department of Cardio-Thoraco-Vascular Sciences and Public Health, University of Padua, Padua, Italy
| | - Sofia Pavanello
- Occupational Medicine, Department of Cardio-Thoraco-Vascular Sciences and Public Health, University of Padua, Padua, Italy.
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8
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Tenchov R, Sasso JM, Wang X, Zhou QA. Aging Hallmarks and Progression and Age-Related Diseases: A Landscape View of Research Advancement. ACS Chem Neurosci 2024; 15:1-30. [PMID: 38095562 PMCID: PMC10767750 DOI: 10.1021/acschemneuro.3c00531] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2023] [Revised: 11/15/2023] [Accepted: 11/16/2023] [Indexed: 01/04/2024] Open
Abstract
Aging is a dynamic, time-dependent process that is characterized by a gradual accumulation of cell damage. Continual functional decline in the intrinsic ability of living organisms to accurately regulate homeostasis leads to increased susceptibility and vulnerability to diseases. Many efforts have been put forth to understand and prevent the effects of aging. Thus, the major cellular and molecular hallmarks of aging have been identified, and their relationships to age-related diseases and malfunctions have been explored. Here, we use data from the CAS Content Collection to analyze the publication landscape of recent aging-related research. We review the advances in knowledge and delineate trends in research advancements on aging factors and attributes across time and geography. We also review the current concepts related to the major aging hallmarks on the molecular, cellular, and organismic level, age-associated diseases, with attention to brain aging and brain health, as well as the major biochemical processes associated with aging. Major age-related diseases have been outlined, and their correlations with the major aging features and attributes are explored. We hope this review will be helpful for apprehending the current knowledge in the field of aging mechanisms and progression, in an effort to further solve the remaining challenges and fulfill its potential.
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Affiliation(s)
- Rumiana Tenchov
- CAS, a Division of the American Chemical
Society, 2540 Olentangy River Road, Columbus, Ohio 43202, United States
| | - Janet M. Sasso
- CAS, a Division of the American Chemical
Society, 2540 Olentangy River Road, Columbus, Ohio 43202, United States
| | - Xinmei Wang
- CAS, a Division of the American Chemical
Society, 2540 Olentangy River Road, Columbus, Ohio 43202, United States
| | - Qiongqiong Angela Zhou
- CAS, a Division of the American Chemical
Society, 2540 Olentangy River Road, Columbus, Ohio 43202, United States
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9
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Raza U, Tang X, Liu Z, Liu B. SIRT7: the seventh key to unlocking the mystery of aging. Physiol Rev 2024; 104:253-280. [PMID: 37676263 PMCID: PMC11281815 DOI: 10.1152/physrev.00044.2022] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2022] [Revised: 08/07/2023] [Accepted: 09/01/2023] [Indexed: 09/08/2023] Open
Abstract
Aging is a chronic yet natural physiological decline of the body. Throughout life, humans are continuously exposed to a variety of exogenous and endogenous stresses, which engender various counteractive responses at the cellular, tissue, organ, as well as organismal levels. The compromised cellular and tissue functions that occur because of genetic factors or prolonged stress (or even the stress response) may accelerate aging. Over the last two decades, the sirtuin (SIRT) family of lysine deacylases has emerged as a key regulator of longevity in a variety of organisms. SIRT7, the most recently identified member of the SIRTs, maintains physiological homeostasis and provides protection against aging by functioning as a watchdog of genomic integrity, a dynamic sensor and modulator of stresses. SIRT7 decline disrupts metabolic homeostasis, accelerates aging, and increases the risk of age-related pathologies including cardiovascular and neurodegenerative diseases, pulmonary and renal disorders, inflammatory diseases, and cancer, etc. Here, we present SIRT7 as the seventh key to unlock the mystery of aging, and its specific manipulation holds great potential to ensure healthiness and longevity.
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Affiliation(s)
- Umar Raza
- Shenzhen Key Laboratory for Systemic Aging and Intervention (SKL-SAI), National Engineering Research Center for Biotechnology (Shenzhen), School of Basic Medical Sciences, Shenzhen University Medical School, Shenzhen, China
| | - Xiaolong Tang
- School of Biomedical Sciences, Hunan University, Changsha, China
| | - Zuojun Liu
- School of Life Sciences, Hainan University, Haikou, China
| | - Baohua Liu
- Shenzhen Key Laboratory for Systemic Aging and Intervention (SKL-SAI), National Engineering Research Center for Biotechnology (Shenzhen), School of Basic Medical Sciences, Shenzhen University Medical School, Shenzhen, China
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10
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Shen R, Ardianto C, Celia C, Sidharta VM, Sasmita PK, Satriotomo I, Turana Y. Brain-derived neurotrophic factor interplay with oxidative stress: neuropathology approach in potential biomarker of Alzheimer's disease. Dement Neuropsychol 2023; 17:e20230012. [PMID: 38053647 PMCID: PMC10695442 DOI: 10.1590/1980-5764-dn-2023-0012] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Revised: 07/05/2023] [Accepted: 07/30/2023] [Indexed: 12/07/2023] Open
Abstract
The aging population poses a serious challenge concerning an increased prevalence of Alzheimer's disease (AD) and its impact on global burden, morbidity, and mortality. Oxidative stress, as a molecular hallmark that causes susceptibility in AD, interplays to other AD-related neuropathology cascades and decreases the expression of central and circulation brain-derived neurotrophic factor (BDNF), an essential neurotrophin that serves as nerve development and survival, and synaptic plasticity in AD. By its significant correlation with the molecular and clinical progression of AD, BDNF can potentially be used as an objectively accurate biomarker for AD diagnosis and progressivity follow-up in future clinical practice. This comprehensive review highlights the oxidative stress interplay with BDNF in AD neuropathology and its potential use as an AD biomarker.
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Affiliation(s)
- Robert Shen
- Atma Jaya Catholic University of Indonesia, School of Medicine and Health Sciences, Jakarta, Indonesia
| | - Christian Ardianto
- Atma Jaya Catholic University of Indonesia, School of Medicine and Health Sciences, Jakarta, Indonesia
| | - Celia Celia
- Atma Jaya Catholic University of Indonesia, School of Medicine and Health Sciences, Jakarta, Indonesia
| | - Veronika Maria Sidharta
- Atma Jaya Catholic University of Indonesia, School of Medicine and Health Sciences, Jakarta, Indonesia
| | - Poppy Kristina Sasmita
- Atma Jaya Catholic University of Indonesia, School of Medicine and Health Sciences, Jakarta, Indonesia
| | - Irawan Satriotomo
- University of Florida, Gainesville, Department of Neurology, Florida, USA
- Satriotomo Foundation, Indonesia Neuroscience Institute, Jakarta, Indonesia
| | - Yuda Turana
- Atma Jaya Catholic University of Indonesia, School of Medicine and Health Sciences, Jakarta, Indonesia
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11
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Brochard T, McIntyre RL, Houtkooper RH, Seluanov A, Gorbunova V, Janssens GE. Repurposing nucleoside reverse transcriptase inhibitors (NRTIs) to slow aging. Ageing Res Rev 2023; 92:102132. [PMID: 37984625 DOI: 10.1016/j.arr.2023.102132] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2023] [Revised: 11/03/2023] [Accepted: 11/15/2023] [Indexed: 11/22/2023]
Abstract
Repurposing drugs already approved in the clinic to be used off-label as geroprotectors, compounds that combat mechanisms of aging, are a promising way to rapidly reduce age-related disease incidence in society. Several recent studies have found that a class of drugs-nucleoside reverse transcriptase inhibitors (NRTIs)-originally developed as treatments for cancers and human immunodeficiency virus (HIV) infection, could be repurposed to slow the aging process. Interestingly, these studies propose complementary mechanisms that target multiple hallmarks of aging. At the molecular level, NRTIs repress LINE-1 elements, reducing DNA damage, benefiting the hallmark of aging of 'Genomic Instability'. At the organellar level, NRTIs inhibit mitochondrial translation, activate ATF-4, suppress cytosolic translation, and extend lifespan in worms in a manner related to the 'Loss of Proteostasis' hallmark of aging. Meanwhile, at the cellular level, NRTIs inhibit the P2X7-mediated activation of the inflammasome, reducing inflammation and improving the hallmark of aging of 'Altered Intercellular Communication'. Future development of NRTIs for human aging health will need to balance out toxic side effects with the beneficial effects, which may occur in part through hormesis.
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Affiliation(s)
- Thomas Brochard
- Laboratory Genetic Metabolic Diseases, Amsterdam University Medical Centers, University of Amsterdam, Amsterdam, the Netherlands
| | - Rebecca L McIntyre
- Laboratory Genetic Metabolic Diseases, Amsterdam University Medical Centers, University of Amsterdam, Amsterdam, the Netherlands; Amsterdam Gastroenterology, Endocrinology and Metabolism Institute, Amsterdam University Medical Centers, University of Amsterdam, Amsterdam, the Netherlands
| | - Riekelt H Houtkooper
- Laboratory Genetic Metabolic Diseases, Amsterdam University Medical Centers, University of Amsterdam, Amsterdam, the Netherlands; Amsterdam Gastroenterology, Endocrinology and Metabolism Institute, Amsterdam University Medical Centers, University of Amsterdam, Amsterdam, the Netherlands; Amsterdam Cardiovascular Sciences, Amsterdam, the Netherlands
| | - Andrei Seluanov
- Departments of Biology and Medicine, University of Rochester, Rochester, NY, USA
| | - Vera Gorbunova
- Departments of Biology and Medicine, University of Rochester, Rochester, NY, USA
| | - Georges E Janssens
- Laboratory Genetic Metabolic Diseases, Amsterdam University Medical Centers, University of Amsterdam, Amsterdam, the Netherlands; Amsterdam Gastroenterology, Endocrinology and Metabolism Institute, Amsterdam University Medical Centers, University of Amsterdam, Amsterdam, the Netherlands.
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12
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van der Linden J, Trap L, Scherer CV, Roks AJM, Danser AHJ, van der Pluijm I, Cheng C. Model Systems to Study the Mechanism of Vascular Aging. Int J Mol Sci 2023; 24:15379. [PMID: 37895059 PMCID: PMC10607365 DOI: 10.3390/ijms242015379] [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: 08/31/2023] [Revised: 10/16/2023] [Accepted: 10/17/2023] [Indexed: 10/29/2023] Open
Abstract
Cardiovascular diseases are the leading cause of death globally. Within cardiovascular aging, arterial aging holds significant importance, as it involves structural and functional alterations in arteries that contribute substantially to the overall decline in cardiovascular health during the aging process. As arteries age, their ability to respond to stress and injury diminishes, while their luminal diameter increases. Moreover, they experience intimal and medial thickening, endothelial dysfunction, loss of vascular smooth muscle cells, cellular senescence, extracellular matrix remodeling, and deposition of collagen and calcium. This aging process also leads to overall arterial stiffening and cellular remodeling. The process of genomic instability plays a vital role in accelerating vascular aging. Progeria syndromes, rare genetic disorders causing premature aging, exemplify the impact of genomic instability. Throughout life, our DNA faces constant challenges from environmental radiation, chemicals, and endogenous metabolic products, leading to DNA damage and genome instability as we age. The accumulation of unrepaired damages over time manifests as an aging phenotype. To study vascular aging, various models are available, ranging from in vivo mouse studies to cell culture options, and there are also microfluidic in vitro model systems known as vessels-on-a-chip. Together, these models offer valuable insights into the aging process of blood vessels.
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Affiliation(s)
- Janette van der Linden
- Division of Vascular Medicine and Pharmacology, Department of Internal Medicine, Erasmus MC, 3015 GD Rotterdam, The Netherlands
- Department of Molecular Genetics, Cancer Genomics Center Netherlands, Erasmus MC, 3015 GD Rotterdam, The Netherlands
| | - Lianne Trap
- Department of Pulmonary Medicine, Erasmus MC, 3015 GD Rotterdam, The Netherlands
- Department of Internal Medicine, Erasmus MC, 3015 GD Rotterdam, The Netherlands
| | - Caroline V. Scherer
- Department of Molecular Genetics, Cancer Genomics Center Netherlands, Erasmus MC, 3015 GD Rotterdam, The Netherlands
| | - Anton J. M. Roks
- Division of Vascular Medicine and Pharmacology, Department of Internal Medicine, Erasmus MC, 3015 GD Rotterdam, The Netherlands
| | - A. H. Jan Danser
- Division of Vascular Medicine and Pharmacology, Department of Internal Medicine, Erasmus MC, 3015 GD Rotterdam, The Netherlands
| | - Ingrid van der Pluijm
- Department of Molecular Genetics, Cancer Genomics Center Netherlands, Erasmus MC, 3015 GD Rotterdam, The Netherlands
- Department of Vascular Surgery, Cardiovascular Institute, Erasmus MC, 3015 GD Rotterdam, The Netherlands
| | - Caroline Cheng
- Division of Experimental Cardiology, Department of Cardiology, Erasmus MC, 3015 GD Rotterdam, The Netherlands
- Department of Nephrology and Hypertension, Division of Internal Medicine and Dermatology, University Medical Center Utrecht, 3584 CX Utrecht, The Netherlands
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13
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Javali PS, Sekar M, Kumar A, Thirumurugan K. Dynamics of redox signaling in aging via autophagy, inflammation, and senescence. Biogerontology 2023; 24:663-678. [PMID: 37195483 DOI: 10.1007/s10522-023-10040-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Accepted: 05/09/2023] [Indexed: 05/18/2023]
Abstract
Review paper attempts to explain the dynamic aspects of redox signaling in aging through autophagy, inflammation, and senescence. It begins with ROS source in the cell, then states redox signaling in autophagy, and regulation of autophagy in aging. Next, we discuss inflammation and redox signaling with various pathways involved: NOX pathway, ROS production via TNF-α, IL-1β, xanthine oxidase pathway, COX pathway, and myeloperoxidase pathway. Also, we emphasize oxidative damage as an aging marker and the contribution of pathophysiological factors to aging. In senescence-associated secretory phenotypes, we link ROS with senescence, aging disorders. Relevant crosstalk between autophagy, inflammation, and senescence using a balanced ROS level might reduce age-related disorders. Transducing the context-dependent signal communication among these three processes at high spatiotemporal resolution demands other tools like multi-omics aging biomarkers, artificial intelligence, machine learning, and deep learning. The bewildering advancement of technology in the above areas might progress age-related disorders diagnostics with precision and accuracy.
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Affiliation(s)
- Prashanth S Javali
- #412J, Structural Biology Lab, Pearl Research Park, School of Biosciences & Technology, Vellore Institute of Technology, Vellore, Tamil Nadu, 632014, India
| | - Mouliganesh Sekar
- #412J, Structural Biology Lab, Pearl Research Park, School of Biosciences & Technology, Vellore Institute of Technology, Vellore, Tamil Nadu, 632014, India
| | - Ashish Kumar
- #412J, Structural Biology Lab, Pearl Research Park, School of Biosciences & Technology, Vellore Institute of Technology, Vellore, Tamil Nadu, 632014, India
| | - Kavitha Thirumurugan
- #412J, Structural Biology Lab, Pearl Research Park, School of Biosciences & Technology, Vellore Institute of Technology, Vellore, Tamil Nadu, 632014, India.
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14
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Culberson JW, Kopel J, Sehar U, Reddy PH. Urgent needs of caregiving in ageing populations with Alzheimer's disease and other chronic conditions: Support our loved ones. Ageing Res Rev 2023; 90:102001. [PMID: 37414157 PMCID: PMC10756323 DOI: 10.1016/j.arr.2023.102001] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Revised: 06/27/2023] [Accepted: 07/03/2023] [Indexed: 07/08/2023]
Abstract
The ageing process begins at birth. It is a life-long process, and its exact origins are still unknown. Several hypotheses attempt to describe the normal ageing process, including hormonal imbalance, formation of reactive oxygen species, DNA methylation & DNA damage accumulation, loss of proteostasis, epigenetic alterations, mitochondrial dysfunction, senescence, inflammation, and stem cell depletion. With increased lifespan in elderly individuals, the prevalence of age-related diseases including, cancer, diabetes, obesity, hypertension, Alzheimer's, Alzheimer's disease and related dementias, Parkinson's, and other mental illnesses are increased. These increased age-related illnesses, put tremendous pressure & burden on caregivers, family members, and friends who are living with patients with age-related diseases. As medical needs evolve, the caregiver is expected to experience an increase in duties and challenges, which may result in stress on themselves, and impact their own family life. In the current article, we assess the biological mechanisms of ageing and its effect on body systems, exploring lifestyle and ageing, with a specific focus on age-related disorders. We also discussed the history of caregiving and specific challenges faced by caregivers in the presence of multiple comorbidities. We also assessed innovative approaches to funding caregiving, and efforts to improve the medical system to better organize chronic care efforts, while improving the skill and efficiency of both informal and formal caregivers. We also discussed the role of caregiving in end-of-life care. Our critical analysis strongly suggests that there is an urgent need for caregiving in aged populations and support from local, state, and federal agencies.
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Affiliation(s)
- John W Culberson
- Department of Family and Community Medicine, Texas Tech University Health Sciences Center, Lubbock, TX, USA
| | - Jonathan Kopel
- Department of Internal Medicine, Texas Tech University Health Sciences Center, Lubbock, TX, USA
| | - Ujala Sehar
- Department of Internal Medicine, Texas Tech University Health Sciences Center, Lubbock, TX, USA
| | - P Hemachandra Reddy
- Department of Internal Medicine, Texas Tech University Health Sciences Center, Lubbock, TX, USA; Nutritional Sciences Department, College of Human Sciences, Texas Tech University, 1301 Akron Ave, Lubbock, TX 79409, USA; Neurology, Departments of School of Medicine, Texas Tech University Health Sciences Center, Lubbock, TX 79430, USA; Public Health Department of Graduate School of Biomedical Sciences, Texas Tech University Health Sciences Center, Lubbock, TX 79430, USA; Department of Speech, Language and Hearing Sciences, School Health Professions, Texas Tech University Health Sciences Center, Lubbock, TX 79430, USA; Department of Pharmacology and Neuroscience, Texas Tech University Health Sciences Center, Lubbock, TX 79430, USA.
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15
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Mišík M, Kundi M, Worel N, Ferk F, Hutter HP, Grusch M, Nersesyan A, Herrera Morales D, Knasmueller S. Impact of mobile phone-specific electromagnetic fields on DNA damage caused by occupationally relevant exposures: results of ex vivo experiments with peripheral blood mononuclear cells from different demographic groups. Mutagenesis 2023; 38:227-237. [PMID: 37418160 PMCID: PMC10448860 DOI: 10.1093/mutage/gead022] [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: 04/13/2023] [Accepted: 07/05/2023] [Indexed: 07/08/2023] Open
Abstract
The aim of this study was to investigate if age and body mass of humans have an impact on the DNA-damaging properties of high-frequency mobile phone-specific electromagnetic fields (HF-EMF, 1950 MHz, universal mobile telecommunications system, UMTS signal) and if this form of radiation has an impact on the genotoxic effects of occupationally relevant exposures. Pooled peripheral blood mononuclear cells (PBMC) from three groups [young normal weight, young obese (YO), and older age normal weight individuals] were exposed to different doses of HF-EMF (0.25, 0.5, and 1.0 W/kg specific absorption rate-SAR) and simultaneously or sequentially to different chemicals which cause DNA damage (CrO3, NiCl2, benzo[a]pyrene diol epoxide-BPDE, and 4-nitroquinoline 1-oxide-4NQO) via different molecular mechanisms. We found no difference in regard to the background values in the three groups but a significant increase of DNA damage (81% without and 36% with serum) in cells from old participants after radiation with 1.0 W/kg SAR 16 h. In combined treatment experiments we found no impact of the UMTS signal on chemically induced DNA damage in the different groups in general. However, a moderate decrease of DNA damage was seen in simultaneous treatment experiments with BPDE and 1.0 W/kg SAR in the YO group (decline 18%). Taken together our findings indicate that HF-EMF cause DNA damage in PBMC from older subjects (69.1 years). Furthermore, they show that the radiation does not increase induction of DNA damage by occupationally relevant chemicals.
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Affiliation(s)
- Miroslav Mišík
- Center for Cancer Research, Medical University of Vienna, Vienna, Austria
| | - Michael Kundi
- Center for Public Health, Department of Environmental Health, Medical University of Vienna, Vienna, Austria
| | - Nadine Worel
- Center for Cancer Research, Medical University of Vienna, Vienna, Austria
| | - Franziska Ferk
- Center for Cancer Research, Medical University of Vienna, Vienna, Austria
| | - Hans-Peter Hutter
- Center for Public Health, Department of Environmental Health, Medical University of Vienna, Vienna, Austria
| | - Michael Grusch
- Center for Cancer Research, Medical University of Vienna, Vienna, Austria
| | - Armen Nersesyan
- Center for Cancer Research, Medical University of Vienna, Vienna, Austria
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16
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Navarro C, Salazar J, Díaz MP, Chacin M, Santeliz R, Vera I, D′Marco L, Parra H, Bernal MC, Castro A, Escalona D, García-Pacheco H, Bermúdez V. Intrinsic and environmental basis of aging: A narrative review. Heliyon 2023; 9:e18239. [PMID: 37576279 PMCID: PMC10415626 DOI: 10.1016/j.heliyon.2023.e18239] [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: 12/06/2022] [Revised: 06/26/2023] [Accepted: 07/12/2023] [Indexed: 08/15/2023] Open
Abstract
Longevity has been a topic of interest since the beginnings of humanity, yet its aetiology and precise mechanisms remain to be elucidated. Aging is currently viewed as a physiological phenomenon characterized by the gradual degeneration of organic physiology and morphology due to the passage of time where both external and internal stimuli intervene. The influence of intrinsic factors, such as progressive telomere shortening, genome instability due to mutation buildup, the direct or indirect actions of age-related genes, and marked changes in epigenetic, metabolic, and mitochondrial patterns constitute a big part of its underlying endogenous mechanisms. On the other hand, several psychosocial and demographic factors, such as diet, physical activity, smoking, and drinking habits, may have an even more significant impact on shaping the aging process. Consequentially, implementing dietary and exercise patterns has been proposed as the most viable alternative strategy for attenuating the most typical degenerative aging changes, thus increasing the likelihood of prolonging lifespan and achieving successful aging.
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Affiliation(s)
- Carla Navarro
- Endocrine and Metabolic Diseases Research Center. School of Medicine. University of Zulia. Maracaibo 4001, Venezuela
| | - Juan Salazar
- Endocrine and Metabolic Diseases Research Center. School of Medicine. University of Zulia. Maracaibo 4001, Venezuela
| | - María P. Díaz
- Endocrine and Metabolic Diseases Research Center. School of Medicine. University of Zulia. Maracaibo 4001, Venezuela
| | - Maricarmen Chacin
- Universidad Simón Bolívar, Facultad de Ciencias de la Salud, Barranquilla 080001, Colombia
| | - Raquel Santeliz
- Endocrine and Metabolic Diseases Research Center. School of Medicine. University of Zulia. Maracaibo 4001, Venezuela
| | - Ivana Vera
- Endocrine and Metabolic Diseases Research Center. School of Medicine. University of Zulia. Maracaibo 4001, Venezuela
| | - Luis D′Marco
- Universidad Cardenal Herrera-CEU Medicine Department, CEU Universities, 46115 Valencia, Spain
| | - Heliana Parra
- Endocrine and Metabolic Diseases Research Center. School of Medicine. University of Zulia. Maracaibo 4001, Venezuela
| | | | - Ana Castro
- Endocrine and Metabolic Diseases Research Center. School of Medicine. University of Zulia. Maracaibo 4001, Venezuela
| | - Daniel Escalona
- Endocrine and Metabolic Diseases Research Center. School of Medicine. University of Zulia. Maracaibo 4001, Venezuela
| | - Henry García-Pacheco
- Universidad del Zulia, Facultad de Medicina, Departamento de Cirugía. Hospital General del Sur “Dr. Pedro Iturbe”. Maracaibo, Venezuela
- Unidad de Cirugía para la Obesidad y Metabolismo (UCOM). Maracaibo, Venezuela
| | - Valmore Bermúdez
- Universidad Simón Bolívar, Facultad de Ciencias de la Salud, Barranquilla 080001, Colombia
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17
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Rosen RS, Yarmush ML. Current Trends in Anti-Aging Strategies. Annu Rev Biomed Eng 2023; 25:363-385. [PMID: 37289554 DOI: 10.1146/annurev-bioeng-120122-123054] [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] [Indexed: 06/10/2023]
Abstract
The process of aging manifests from a highly interconnected network of biological cascades resulting in the degradation and breakdown of every living organism over time. This natural development increases risk for numerous diseases and can be debilitating. Academic and industrial investigators have long sought to impede, or potentially reverse, aging in the hopes of alleviating clinical burden, restoring functionality, and promoting longevity. Despite widespread investigation, identifying impactful therapeutics has been hindered by narrow experimental validation and the lack of rigorous study design. In this review, we explore the current understanding of the biological mechanisms of aging and how this understanding both informs and limits interpreting data from experimental models based on these mechanisms. We also discuss select therapeutic strategies that have yielded promising data in these model systems with potential clinical translation. Lastly, we propose a unifying approach needed to rigorously vet current and future therapeutics and guide evaluation toward efficacious therapies.
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Affiliation(s)
- Robert S Rosen
- Department of Biomedical Engineering, Rutgers, The State University of New Jersey, Piscataway, New Jersey, USA;
| | - Martin L Yarmush
- Department of Biomedical Engineering, Rutgers, The State University of New Jersey, Piscataway, New Jersey, USA;
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18
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Statzer C, Park JYC, Ewald CY. Extracellular Matrix Dynamics as an Emerging yet Understudied Hallmark of Aging and Longevity. Aging Dis 2023; 14:670-693. [PMID: 37191434 DOI: 10.14336/ad.2022.1116] [Citation(s) in RCA: 16] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2022] [Accepted: 11/16/2022] [Indexed: 05/17/2023] Open
Abstract
The biomechanical properties of extracellular matrices (ECM) and their consequences for cellular homeostasis have recently emerged as a driver of aging. Here we review the age-dependent deterioration of ECM in the context of our current understanding of the aging processes. We discuss the reciprocal interactions of longevity interventions with ECM remodeling. And the relevance of ECM dynamics captured by the matrisome and the matreotypes associated with health, disease, and longevity. Furthermore, we highlight that many established longevity compounds promote ECM homeostasis. A large body of evidence for the ECM to qualify as a hallmark of aging is emerging, and the data in invertebrates is promising. However, direct experimental proof that activating ECM homeostasis is sufficient to slow aging in mammals is lacking. We conclude that further research is required and anticipate that a conceptual framework for ECM biomechanics and homeostasis will provide new strategies to promote health during aging.
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Affiliation(s)
- Cyril Statzer
- Laboratory of Extracellular Matrix Regeneration, Institute of Translational Medicine, Department of Health Sciences and Technology, ETH Zürich, Schwerzenbach CH-8603, Switzerland
| | - Ji Young Cecilia Park
- Laboratory of Extracellular Matrix Regeneration, Institute of Translational Medicine, Department of Health Sciences and Technology, ETH Zürich, Schwerzenbach CH-8603, Switzerland
| | - Collin Y Ewald
- Laboratory of Extracellular Matrix Regeneration, Institute of Translational Medicine, Department of Health Sciences and Technology, ETH Zürich, Schwerzenbach CH-8603, Switzerland
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19
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Hobson S, Arefin S, Witasp A, Hernandez L, Kublickiene K, Shiels PG, Stenvinkel P. Accelerated Vascular Aging in Chronic Kidney Disease: The Potential for Novel Therapies. Circ Res 2023; 132:950-969. [PMID: 37053277 DOI: 10.1161/circresaha.122.321751] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 04/15/2023]
Abstract
The pathophysiology of vascular disease is linked to accelerated biological aging and a combination of genetic, lifestyle, biological, and environmental risk factors. Within the scenario of uncontrolled artery wall aging processes, CKD (chronic kidney disease) stands out as a valid model for detailed structural, functional, and molecular studies of this process. The cardiorenal syndrome relates to the detrimental bidirectional interplay between the kidney and the cardiovascular system. In addition to established risk factors, this group of patients is subjected to a plethora of other emerging vascular risk factors, such as inflammation, oxidative stress, mitochondrial dysfunction, vitamin K deficiency, cellular senescence, somatic mutations, epigenetic modifications, and increased apoptosis. A better understanding of the molecular mechanisms through which the uremic milieu triggers and maintains early vascular aging processes, has provided important new clues on inflammatory pathways and emerging risk factors alike, and to the altered behavior of cells in the arterial wall. Advances in the understanding of the biology of uremic early vascular aging opens avenues to novel pharmacological and nutritional therapeutic interventions. Such strategies hold promise to improve future prevention and treatment of early vascular aging not only in CKD but also in the elderly general population.
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Affiliation(s)
- S Hobson
- Division of Renal Medicine, Department of Clinical Science, Intervention and Technology, Karolinska Institutet, Stockholm, Sweden (S.H., S.A., A.W., L.H., K.K., P.S.)
| | - S Arefin
- Division of Renal Medicine, Department of Clinical Science, Intervention and Technology, Karolinska Institutet, Stockholm, Sweden (S.H., S.A., A.W., L.H., K.K., P.S.)
| | - A Witasp
- Division of Renal Medicine, Department of Clinical Science, Intervention and Technology, Karolinska Institutet, Stockholm, Sweden (S.H., S.A., A.W., L.H., K.K., P.S.)
| | - L Hernandez
- Division of Renal Medicine, Department of Clinical Science, Intervention and Technology, Karolinska Institutet, Stockholm, Sweden (S.H., S.A., A.W., L.H., K.K., P.S.)
| | - K Kublickiene
- Division of Renal Medicine, Department of Clinical Science, Intervention and Technology, Karolinska Institutet, Stockholm, Sweden (S.H., S.A., A.W., L.H., K.K., P.S.)
| | - P G Shiels
- School of Molecular Biosciences, MVLS, University of Glasgow, United Kingdom (P.G.S.)
| | - P Stenvinkel
- Division of Renal Medicine, Department of Clinical Science, Intervention and Technology, Karolinska Institutet, Stockholm, Sweden (S.H., S.A., A.W., L.H., K.K., P.S.)
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20
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Chhabra Y, Weeraratna AT. Fibroblasts in cancer: Unity in heterogeneity. Cell 2023; 186:1580-1609. [PMID: 37059066 DOI: 10.1016/j.cell.2023.03.016] [Citation(s) in RCA: 61] [Impact Index Per Article: 61.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Revised: 03/13/2023] [Accepted: 03/15/2023] [Indexed: 04/16/2023]
Abstract
Tumor cells do not exist in isolation in vivo, and carcinogenesis depends on the surrounding tumor microenvironment (TME), composed of a myriad of cell types and biophysical and biochemical components. Fibroblasts are integral in maintaining tissue homeostasis. However, even before a tumor develops, pro-tumorigenic fibroblasts in close proximity can provide the fertile 'soil' to the cancer 'seed' and are known as cancer-associated fibroblasts (CAFs). In response to intrinsic and extrinsic stressors, CAFs reorganize the TME enabling metastasis, therapeutic resistance, dormancy and reactivation by secreting cellular and acellular factors. In this review, we summarize the recent discoveries on CAF-mediated cancer progression with a particular focus on fibroblast heterogeneity and plasticity.
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Affiliation(s)
- Yash Chhabra
- Department of Biochemistry and Molecular Biology, Bloomberg School of Public Health, Department of Oncology, Sidney Kimmel Cancer Center, School of Medicine, Johns Hopkins University, Baltimore, MD 21205, USA.
| | - Ashani T Weeraratna
- Department of Biochemistry and Molecular Biology, Bloomberg School of Public Health, Department of Oncology, Sidney Kimmel Cancer Center, School of Medicine, Johns Hopkins University, Baltimore, MD 21205, USA.
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21
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Fingelkurts AA, Fingelkurts AA. Turning Back the Clock: A Retrospective Single-Blind Study on Brain Age Change in Response to Nutraceuticals Supplementation vs. Lifestyle Modifications. Brain Sci 2023; 13:brainsci13030520. [PMID: 36979330 PMCID: PMC10046544 DOI: 10.3390/brainsci13030520] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Revised: 03/17/2023] [Accepted: 03/19/2023] [Indexed: 03/30/2023] Open
Abstract
BACKGROUND There is a growing consensus that chronological age (CA) is not an accurate indicator of the aging process and that biological age (BA) instead is a better measure of an individual's risk of age-related outcomes and a more accurate predictor of mortality than actual CA. In this context, BA measures the "true" age, which is an integrated result of an individual's level of damage accumulation across all levels of biological organization, along with preserved resources. The BA is plastic and depends upon epigenetics. Brain state is an important factor contributing to health- and lifespan. METHODS AND OBJECTIVE Quantitative electroencephalography (qEEG)-derived brain BA (BBA) is a suitable and promising measure of brain aging. In the present study, we aimed to show that BBA can be decelerated or even reversed in humans (N = 89) by using customized programs of nutraceutical compounds or lifestyle changes (mean duration = 13 months). RESULTS We observed that BBA was younger than CA in both groups at the end of the intervention. Furthermore, the BBA of the participants in the nutraceuticals group was 2.83 years younger at the endpoint of the intervention compared with their BBA score at the beginning of the intervention, while the BBA of the participants in the lifestyle group was only 0.02 years younger at the end of the intervention. These results were accompanied by improvements in mental-physical health comorbidities in both groups. The pre-intervention BBA score and the sex of the participants were considered confounding factors and analyzed separately. CONCLUSIONS Overall, the obtained results support the feasibility of the goal of this study and also provide the first robust evidence that halting and reversal of brain aging are possible in humans within a reasonable (practical) timeframe of approximately one year.
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22
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Pereira QC, dos Santos TW, Fortunato IM, Ribeiro ML. The Molecular Mechanism of Polyphenols in the Regulation of Ageing Hallmarks. Int J Mol Sci 2023; 24:ijms24065508. [PMID: 36982583 PMCID: PMC10049696 DOI: 10.3390/ijms24065508] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Revised: 12/27/2022] [Accepted: 01/04/2023] [Indexed: 03/16/2023] Open
Abstract
Ageing is a complex process characterized mainly by a decline in the function of cells, tissues, and organs, resulting in an increased risk of mortality. This process involves several changes, described as hallmarks of ageing, which include genomic instability, telomere attrition, epigenetic changes, loss of proteostasis, dysregulated nutrient sensing, mitochondrial dysfunction, cellular senescence, stem cell depletion, and altered intracellular communication. The determining role that environmental factors such as diet and lifestyle play on health, life expectancy, and susceptibility to diseases, including cancer and neurodegenerative diseases, is wellestablished. In view of the growing interest in the beneficial effects of phytochemicals in the prevention of chronic diseases, several studies have been conducted, and they strongly suggest that the intake of dietary polyphenols may bring numerous benefits due to their antioxidant and anti-inflammatory properties, and their intake has been associated with impaired ageing in humans. Polyphenol intake has been shown to be effective in ameliorating several age-related phenotypes, including oxidative stress, inflammatory processes, impaired proteostasis, and cellular senescence, among other features, which contribute to an increased risk of ageing-associated diseases. This review aims to address, in a general way, the main findings described in the literature about the benefits of polyphenols in each of the hallmarks of ageing, as well as the main regulatory mechanisms responsible for the observed antiageing effects.
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Affiliation(s)
- Quélita Cristina Pereira
- Laboratory of Immunopharmacology and Molecular Biology, Sao Francisco University Medical School, Braganca Paulista 12916-900, SP, Brazil
| | - Tanila Wood dos Santos
- Laboratory of Immunopharmacology and Molecular Biology, Sao Francisco University Medical School, Braganca Paulista 12916-900, SP, Brazil
| | - Isabela Monique Fortunato
- Laboratory of Immunopharmacology and Molecular Biology, Sao Francisco University Medical School, Braganca Paulista 12916-900, SP, Brazil
| | - Marcelo Lima Ribeiro
- Laboratory of Immunopharmacology and Molecular Biology, Sao Francisco University Medical School, Braganca Paulista 12916-900, SP, Brazil
- Lymphoma Translational Group, Josep Carreras Leukemia Research Institute, 08916 Badalona, Spain
- Correspondence:
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Zhang Y, Zhou Y, Kan D, Yang Y, Shen J, Han C, Liu X, Yang J. m6A-mediated nonhomologous end joining (NHEJ) pathway regulates senescence in Brachionus plicatilis (Rotifera). Arch Gerontol Geriatr 2023; 111:104994. [PMID: 36963346 DOI: 10.1016/j.archger.2023.104994] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Revised: 02/23/2023] [Accepted: 03/06/2023] [Indexed: 03/14/2023]
Abstract
Epigenetic modifications play an important role in the regulation of senescence. N6-methyladenosine (m6A) is the most abundant modification of mRNA. However, the impact of m6A on senescence remains largely unknown at the animal individual level. Standard model organisms Caenorhabditis elegans and Drosophila melanogaster lack many gene homologs of vertebrate m6A system that are present in other invertebrates. In this study, we employed a small aquatic invertebrate Brachionus plicatilis which has been used in aging studies for nearly 100 years to study how m6A affects aging. Phylogenetic analysis confirmed that rotifers' m6A pathway has a conserved methyltransferase complex but no demethylases and the m6A reading system was more akin to that of vertebrates than that of D. melanogaster. m6A methyltransferases are highly expressed during development but reduces dramatically during aging. Knockdown of METTL3 results in decreased fecundity and premature senescence of rotifers. Furthermore, RT-qPCR analysis indicates a role for m6A in the nonhomologous end joining (NHEJ) pathway of DNA double-strand breaks (DSBs) repair. Altogether, our work reveals a senescence regulatory model for the rotifer METTL3-m6A-NHEJ pathway.
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Affiliation(s)
- Yu Zhang
- School of Marine Science and Engineering, Nanjing Normal University, No. 2 Xuelin Rd, Nanjing 210023, People's Republic of China
| | - Yang Zhou
- School of Marine Science and Engineering, Nanjing Normal University, No. 2 Xuelin Rd, Nanjing 210023, People's Republic of China
| | - Dongqi Kan
- School of Marine Science and Engineering, Nanjing Normal University, No. 2 Xuelin Rd, Nanjing 210023, People's Republic of China
| | - Yunhong Yang
- School of Marine Science and Engineering, Nanjing Normal University, No. 2 Xuelin Rd, Nanjing 210023, People's Republic of China
| | - Jing Shen
- School of Marine Science and Engineering, Nanjing Normal University, No. 2 Xuelin Rd, Nanjing 210023, People's Republic of China
| | - Cui Han
- School of Marine Science and Engineering, Nanjing Normal University, No. 2 Xuelin Rd, Nanjing 210023, People's Republic of China
| | - Xiaojie Liu
- School of Marine Science and Engineering, Nanjing Normal University, No. 2 Xuelin Rd, Nanjing 210023, People's Republic of China
| | - Jiaxin Yang
- School of Marine Science and Engineering, Nanjing Normal University, No. 2 Xuelin Rd, Nanjing 210023, People's Republic of China.
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24
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Kaltsas A, Moustakli E, Zikopoulos A, Georgiou I, Dimitriadis F, Symeonidis EN, Markou E, Michaelidis TM, Tien DMB, Giannakis I, Ioannidou EM, Papatsoris A, Tsounapi P, Takenaka A, Sofikitis N, Zachariou A. Impact of Advanced Paternal Age on Fertility and Risks of Genetic Disorders in Offspring. Genes (Basel) 2023; 14:486. [PMID: 36833413 PMCID: PMC9957550 DOI: 10.3390/genes14020486] [Citation(s) in RCA: 31] [Impact Index Per Article: 31.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Revised: 02/01/2023] [Accepted: 02/13/2023] [Indexed: 02/17/2023] Open
Abstract
The average age of fathers at first pregnancy has risen significantly over the last decade owing to various variables, including a longer life expectancy, more access to contraception, later marriage, and other factors. As has been proven in several studies, women over 35 years of age have an increased risk of infertility, pregnancy problems, spontaneous abortion, congenital malformations, and postnatal issues. There are varying opinions on whether a father's age affects the quality of his sperm or his ability to father a child. First, there is no single accepted definition of old age in a father. Second, much research has reported contradictory findings in the literature, particularly concerning the most frequently examined criteria. Increasing evidence suggests that the father's age contributes to his offspring's higher vulnerability to inheritable diseases. Our comprehensive literature evaluation shows a direct correlation between paternal age and decreased sperm quality and testicular function. Genetic abnormalities, such as DNA mutations and chromosomal aneuploidies, and epigenetic modifications, such as the silencing of essential genes, have all been linked to the father's advancing years. Paternal age has been shown to affect reproductive and fertility outcomes, such as the success rate of in vitro fertilisation (IVF), intracytoplasmic sperm injection (ICSI), and premature birth rate. Several diseases, including autism, schizophrenia, bipolar disorders, and paediatric leukaemia, have been linked to the father's advanced years. Therefore, informing infertile couples of the alarming correlations between older fathers and a rise in their offspring's diseases is crucial, so that they can be effectively guided through their reproductive years.
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Affiliation(s)
- Aris Kaltsas
- Laboratory of Spermatology, Department of Urology, Faculty of Medicine, School of Health Sciences, University of Ioannina, 45110 Ioannina, Greece
| | - Efthalia Moustakli
- Laboratory of Medical Genetics in Clinical Practice, Faculty of Medicine, School of Health Sciences, University of Ioannina, 45110 Ioannina, Greece
| | - Athanasios Zikopoulos
- Laboratory of Spermatology, Department of Urology, Faculty of Medicine, School of Health Sciences, University of Ioannina, 45110 Ioannina, Greece
| | - Ioannis Georgiou
- Laboratory of Medical Genetics in Clinical Practice, Faculty of Medicine, School of Health Sciences, University of Ioannina, 45110 Ioannina, Greece
| | - Fotios Dimitriadis
- Department of Urology, Faculty of Medicine, School of Health Sciences, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
| | - Evangelos N. Symeonidis
- Department of Urology, Faculty of Medicine, School of Health Sciences, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
| | - Eleftheria Markou
- Department of Microbiology, University Hospital of Ioannina, 45500 Ioannina, Greece
| | - Theologos M. Michaelidis
- Department of Biological Applications and Technologies, School of Health Sciences, University of Ioannina, 45110 Ioannina, Greece
- Biomedical Research Institute, Foundation for Research and Technology-Hellas, 45500 Ioannina, Greece
| | - Dung Mai Ba Tien
- Department of Andrology, Binh Dan Hospital, Ho chi Minh City 70000, Vietnam
| | - Ioannis Giannakis
- Laboratory of Spermatology, Department of Urology, Faculty of Medicine, School of Health Sciences, University of Ioannina, 45110 Ioannina, Greece
| | | | - Athanasios Papatsoris
- 2nd Department of Urology, School of Medicine, Sismanoglio Hospital, National and Kapodistrian Univesity of Athens, 15126 Athens, Greece
| | - Panagiota Tsounapi
- Division of Urology, Department of Surgery, School of Medicine, Faculty of Medicine, Tottori University, Yonago 683-8503, Japan
| | - Atsushi Takenaka
- Division of Urology, Department of Surgery, School of Medicine, Faculty of Medicine, Tottori University, Yonago 683-8503, Japan
| | - Nikolaos Sofikitis
- Laboratory of Spermatology, Department of Urology, Faculty of Medicine, School of Health Sciences, University of Ioannina, 45110 Ioannina, Greece
| | - Athanasios Zachariou
- Laboratory of Spermatology, Department of Urology, Faculty of Medicine, School of Health Sciences, University of Ioannina, 45110 Ioannina, Greece
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Decoupling of mRNA and Protein Expression in Aging Brains Reveals the Age-Dependent Adaptation of Specific Gene Subsets. Cells 2023; 12:cells12040615. [PMID: 36831282 PMCID: PMC9954025 DOI: 10.3390/cells12040615] [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: 01/26/2023] [Revised: 02/07/2023] [Accepted: 02/12/2023] [Indexed: 02/17/2023] Open
Abstract
During aging, changes in gene expression are associated with a decline in physical and cognitive abilities. Here, we investigate the connection between changes in mRNA and protein expression in the brain by comparing the transcriptome and proteome of the mouse cortex during aging. Our transcriptomic analysis revealed that aging mainly triggers gene activation in the cortex. We showed that an increase in mRNA expression correlates with protein expression, specifically in the anterior cingulate cortex, where we also observed an increase in cortical thickness during aging. Genes exhibiting an aging-dependent increase of mRNA and protein levels are involved in sensory perception and immune functions. Our proteomic analysis also identified changes in protein abundance in the aging cortex and highlighted a subset of proteins that were differentially enriched but exhibited stable mRNA levels during aging, implying the contribution of aging-related post- transcriptional and post-translational mechanisms. These specific genes were associated with general biological processes such as translation, ribosome assembly and protein degradation, and also important brain functions related to neuroplasticity. By decoupling mRNA and protein expression, we have thus characterized distinct subsets of genes that differentially adjust to cellular aging in the cerebral cortex.
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Zheng W, Feng D, Xiong X, Liao X, Wang S, Xu H, Le W, Wei Q, Yang L. The Role of cGAS-STING in Age-Related Diseases from Mechanisms to Therapies. Aging Dis 2023:AD.2023.0117. [PMID: 37163421 PMCID: PMC10389832 DOI: 10.14336/ad.2023.0117] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2022] [Accepted: 01/17/2023] [Indexed: 05/12/2023] Open
Abstract
With aging, the incidence of age-related diseases increases. Hence, age-related diseases are inevitable. However, the mechanisms by which aging leads to the onset and progression of age-related diseases remain unclear. It has been reported that inflammation is closely associated with age-related diseases and that the cGAS-STING signaling pathway, which can sense the aberrant presence of cytosolic DNA during aging and induce an inflammatory response, is an important mediator of inflammation in age-related diseases. With a better understanding of the structure and molecular biology of the cGAS-STING signaling axis, numerous selective inhibitors and agonists targeting the cGAS-STING pathway in human age-related diseases have been developed to modulate inflammatory responses. Here, we provide a narrative review of the activity of the cGAS- STING pathway in age-related diseases and discuss its general mechanisms in the onset and progression of age-related diseases. In addition, we outline treatments targeting the cGAS-STING pathway, which may constitute a potential therapeutic alternative for age-related diseases.
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Affiliation(s)
- Weitao Zheng
- Department of Urology, Institute of Urology, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Dechao Feng
- Department of Urology, Institute of Urology, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Xingyu Xiong
- Department of Urology, Institute of Urology, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Xinyang Liao
- Department of Urology, Institute of Urology, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Sheng Wang
- Department of Urology, Institute of Urology, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Hang Xu
- Department of Urology, Institute of Urology, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Weizhen Le
- Department of Urology, Institute of Urology, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Qiang Wei
- Department of Urology, Institute of Urology, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Lu Yang
- Department of Urology, Institute of Urology, West China Hospital, Sichuan University, Chengdu, Sichuan, China
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The Double-Edged Role of Extracellular Vesicles in the Hallmarks of Aging. Biomolecules 2023; 13:biom13010165. [PMID: 36671550 PMCID: PMC9855573 DOI: 10.3390/biom13010165] [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: 12/20/2022] [Revised: 01/07/2023] [Accepted: 01/10/2023] [Indexed: 01/14/2023] Open
Abstract
The exponential growth in the elderly population and their associated socioeconomic burden have recently brought aging research into the spotlight. To integrate current knowledge and guide potential interventions, nine biochemical pathways are summarized under the term hallmarks of aging. These hallmarks are deeply inter-related and act together to drive the aging process. Altered intercellular communication is particularly relevant since it explains how damage at the cellular level translates into age-related loss of function at the organismal level. As the main effectors of intercellular communication, extracellular vesicles (EVs) might play a key role in the aggravation or mitigation of the hallmarks of aging. This review aims to summarize this role and to provide context for the multiple emerging EV-based gerotherapeutic strategies that are currently under study.
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Ageing at Molecular Level: Role of MicroRNAs. Subcell Biochem 2023; 102:195-248. [PMID: 36600135 DOI: 10.1007/978-3-031-21410-3_9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
The progression of age triggers a vast number of diseases including cardiovascular, cancer, and neurodegenerative disorders. Regardless of our plentiful knowledge about age-related diseases, little is understood about molecular pathways that associate the ageing process with various diseases. Several cellular events like senescence, telomere dysfunction, alterations in protein processing, and regulation of gene expression are common between ageing and associated diseases. Accumulating information on the role of microRNAs (miRNAs) suggests targeting miRNAs can aid our understanding of the interplay between ageing and associated diseases. In the present chapter, we have attempted to explore the information available on the role of miRNAs in ageing of various tissues/organs and diseases and understand the molecular mechanism of ageing.
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29
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Beranek M, Borsky P, Fiala Z, Andrys C, Hamakova K, Chmelarova M, Kovarikova H, Karas A, Kremlacek J, Palicka V, Borska L. Telomere length, oxidative and epigenetic changes in blood DNA of patients with exacerbated psoriasis vulgaris. An Bras Dermatol 2023; 98:68-74. [PMID: 36319514 PMCID: PMC9837651 DOI: 10.1016/j.abd.2022.01.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Revised: 01/07/2022] [Accepted: 01/07/2022] [Indexed: 01/21/2023] Open
Abstract
BACKGROUND The pathogenesis of psoriasis vulgaris involves changes in DNA molecules, genomic instability, telomere attrition, and epigenetic alterations among them. These changes are also considered important mechanisms of aging in cells and tissues. OBJECTIVE This study dealt with oxidation damage, telomere length and methylation status in DNA originating from peripheral blood of 41 psoriatic patients and 30 healthy controls. METHODS Oxidative damage of serum DNA/RNA was determined immunochemically. Real-time PCR was used for the analysis of the telomere length. ELISA technique determined levels of 5-methylcytosine in blood cells' DNA. RESULTS Oxidative damage of serum DNA/RNA was higher in patients than in controls (median, 3758 vs. 2286pg/mL, p<0.001). A higher length of telomeres per chromosome was found in patients whole-cell DNA than in controls (3.57 vs. 3.04 kilobases, p=0.011). A negative correlation of the length of telomeres with an age of the control subjects was revealed (Spearman's rho=-0.420, p=0.028). Insignificantly different levels of 5-methylcytosine in patients and controls were observed (33.20 vs. 23.35%, p=0.234). No influences of sex, smoking, BMI, PASI score, and metabolic syndrome on the methylation status were found. STUDY LIMITATIONS i) A relatively small number of the participants, particularly for reliable subgroup analyses, ii) the Caucasian origin of the participants possibly influencing the results of the parameters determined, and iii) Telomerase activity was not directly measured in serum or blood cells. CONCLUSION The study demonstrated increased levels of oxidized DNA/RNA molecules in the serum of patients with exacerbated psoriasis vulgaris. The results were minimally influenced by sex, the presence of metabolic syndrome, or cigarette smoking. In the psoriatic blood cells' DNA, the authors observed longer telomeres compared to healthy controls, particularly in females. Insignificantly higher global DNA methylation in psoriasis cases compared to the controls indicated marginal clinical importance of this epigenetic test performed in the blood cells' DNA.
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Affiliation(s)
- Martin Beranek
- Institute of Clinical Biochemistry and Diagnostics, University Hospital Hradec Kralove and Faculty of Medicine, Hradec Kralove, Charles University, Czech Republic,Department of Biochemical Sciences, Faculty of Pharmacy, Hradec Kralove, Charles University, Czech Republic,Corresponding author.
| | - Pavel Borsky
- Institute of Preventive Medicine, Charles University, Faculty of Medicine, Hradec Kralove, Czech Republic
| | - Zdenek Fiala
- Institute of Preventive Medicine, Charles University, Faculty of Medicine, Hradec Kralove, Czech Republic
| | - Ctirad Andrys
- Institute of Clinical Immunology and Allergology, Charles University, Faculty of Medicine, Hradec Kralove, Czech Republic
| | - Kvetoslava Hamakova
- Clinic of Dermatology and Venereology, University Hospital Hradec Kralove, Czech Republic
| | - Marcela Chmelarova
- Institute of Clinical Biochemistry and Diagnostics, University Hospital Hradec Kralove and Faculty of Medicine, Hradec Kralove, Charles University, Czech Republic
| | - Helena Kovarikova
- Institute of Clinical Biochemistry and Diagnostics, University Hospital Hradec Kralove and Faculty of Medicine, Hradec Kralove, Charles University, Czech Republic
| | - Adam Karas
- Institute of Preventive Medicine, Charles University, Faculty of Medicine, Hradec Kralove, Czech Republic
| | - Jan Kremlacek
- Department of Medical Biophysics, Charles University, Faculty of Medicine, Hradec Kralove, Czech Republic
| | - Vladimir Palicka
- Institute of Clinical Biochemistry and Diagnostics, University Hospital Hradec Kralove and Faculty of Medicine, Hradec Kralove, Charles University, Czech Republic
| | - Lenka Borska
- Institute of Preventive Medicine, Charles University, Faculty of Medicine, Hradec Kralove, Czech Republic
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30
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Bamshad C, Najafi-Ghalehlou N, Pourmohammadi-Bejarpasi Z, Tomita K, Kuwahara Y, Sato T, Feizkhah A, Roushnadeh AM, Roudkenar MH. Mitochondria: how eminent in ageing and neurodegenerative disorders? Hum Cell 2023; 36:41-61. [PMID: 36445534 DOI: 10.1007/s13577-022-00833-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2022] [Accepted: 11/23/2022] [Indexed: 11/30/2022]
Abstract
Numerous factors are implicated in the onset and progression of ageing and neurodegenerative disorders, with defects in cell energy supply and free radicals regulation designated as being the main functions of mitochondria and highly accentuated in plentiful studies. Hence, analysing the role of mitochondria as one of the main factors implicated in these disorders could undoubtedly come in handy with respect to disease prevention and treatment. In this review, first, we will explore how mitochondria account for neurodegenerative disorders and ageing and later will draw the various pathways contributing to mitochondrial dysfunction in their distinct way. Also, we will discuss the deviation-countering mechanisms, particularly mitophagy, a subset of autophagy known as a much larger cellular defence mechanism and regulatory system, along with its potential therapeutic effects. Last but not least, we will be highlighting the mitochondrial transfer experiments with animal models of neurodegenerative disorders.
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Affiliation(s)
- Chia Bamshad
- Department of Medical Biotechnology, Faculty of Paramedicine, Guilan University of Medical Sciences, Rasht, Iran
| | - Nima Najafi-Ghalehlou
- Department of Medical Laboratory Sciences, Faculty of Paramedicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Zahra Pourmohammadi-Bejarpasi
- Burn and Regenerative Medicine Research Center, School of Medicine, Velayat Hospital, Guilan University of Medical Sciences, Rasht, Iran
| | - Kazuo Tomita
- Department of Applied Pharmacology, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
| | - Yoshikazu Kuwahara
- Division of Radiation Biology and Medicine, Faculty of Medicine, Tohoku Medical and Pharmaceutical University, Sendai, Japan
| | - Tomoaki Sato
- Department of Applied Pharmacology, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
| | - Alireza Feizkhah
- Burn and Regenerative Medicine Research Center, School of Medicine, Velayat Hospital, Guilan University of Medical Sciences, Rasht, Iran
| | - Amaneh Mohammadi Roushnadeh
- Burn and Regenerative Medicine Research Center, School of Medicine, Velayat Hospital, Guilan University of Medical Sciences, Rasht, Iran.
| | - Mehryar Habibi Roudkenar
- Burn and Regenerative Medicine Research Center, School of Medicine, Velayat Hospital, Guilan University of Medical Sciences, Rasht, Iran.
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Zhu N, Xu MH, Li Y. Bioactive Oligopeptides from Ginseng ( Panax ginseng Meyer) Suppress Oxidative Stress-Induced Senescence in Fibroblasts via NAD +/SIRT1/PGC-1α Signaling Pathway. Nutrients 2022; 14:nu14245289. [PMID: 36558448 PMCID: PMC9780969 DOI: 10.3390/nu14245289] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Revised: 12/03/2022] [Accepted: 12/05/2022] [Indexed: 12/14/2022] Open
Abstract
The physicochemical properties and multiple bioactive effects of ginseng oligopeptides (GOPs), plant-derived small molecule bioactive peptides, suggest a positive influence on health span and longevity. Given this, cellular senescence is the initiating factor and key mechanism of aging in the organism, and thus the current study sought to explore the effects of GOPs on H2O2-induced cellular senescence and its potential mechanisms. Senescence was induced in mouse embryonic fibroblasts NIH/3T3 by 4 h of exposure to 200 µM H2O2 and confirmed using CCK-8 assay and Western blot analyses of p16INK4A and p21Waf1/Cip1 after 24 h of growth medium administration with or without GOPs supplementation (25, 50, and 100 µg/mL). We found that GOPs delayed oxidative stress-induced NIH/3T3 senescence by inhibiting the G1 phase arrest, increasing DNA synthesis in the S phase, decreasing the relative protein expression of p16INK4A and p21Waf1/Cip1, promoting cell viability, protecting DNA, and enhancing telomerase (TE) activity. Further investigation revealed that the increase in antioxidative capacity and anti-inflammation capacity might form the basis for the retarding of the senescence effects of GOPs. Furthermore, GOPs supplementation significantly improved mitochondrial function and mitochondrial biogenesis via the NAD+/SIRT1/PGC-1𝛼 pathway. These findings indicate that GOPs may have a positive effect on health span and lifespan extension via combating cellular senescence, oxidative stress, and inflammation, as well as modulating longevity regulating pathway NAD+/SIRT1/PGC-1𝛼.
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Affiliation(s)
- Na Zhu
- Department of Nutrition and Food Hygiene, School of Public Health, Peking University, Beijing 100191, China
- Department of Nutrition and Food Hygiene, College of Public Health, Inner Mongolia Medical University, Hohhot 010059, China
| | - Mei-Hong Xu
- Department of Nutrition and Food Hygiene, School of Public Health, Peking University, Beijing 100191, China
- Beijing Key Laboratory of Toxicological Research and Risk Assessment for Food Safety, Peking University, Beijing 100191, China
- Correspondence: (M.-H.X.); (Y.L.); Tel.: +86-10-8280-1177 (Y.L.)
| | - Yong Li
- Department of Nutrition and Food Hygiene, School of Public Health, Peking University, Beijing 100191, China
- Beijing Key Laboratory of Toxicological Research and Risk Assessment for Food Safety, Peking University, Beijing 100191, China
- Correspondence: (M.-H.X.); (Y.L.); Tel.: +86-10-8280-1177 (Y.L.)
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32
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Zhou S, Xi Y, Chen Y, Fu F, Yan W, Li M, Wu Y, Luo A, Li Y, Wang S. Low WIP1 Expression Accelerates Ovarian Aging by Promoting Follicular Atresia and Primordial Follicle Activation. Cells 2022; 11:cells11233920. [PMID: 36497179 PMCID: PMC9736686 DOI: 10.3390/cells11233920] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2022] [Revised: 11/20/2022] [Accepted: 11/28/2022] [Indexed: 12/07/2022] Open
Abstract
Our previous study demonstrated that ovarian wild-type P53-induced phosphatase 1 (WIP1) expression decreased with age. We hypothesized that WIP1 activity was related to ovarian aging. The role of WIP1 in regulating ovarian aging and its mechanisms remain to be elucidated. Adult female mice with or without WIP1 inhibitor (GSK2830371) treatment were divided into three groups (Veh, GSK-7.5, GSK-15) to evaluate the effect of WIP1 on ovarian endocrine and reproductive function and the ovarian reserve. In vitro follicle culture and primary granulosa cell culture were applied to explore the mechanisms of WIP1 in regulating follicular development. This study revealed that WIP1 expression in atretic follicle granulosa cells is significantly lower than that in healthy follicles. Inhibiting WIP1 phosphatase activity in mice induced irregular estrous cycles, caused fertility declines, and decreased the ovarian reserve through triggering excessive follicular atresia and primordial follicle activation. Primordial follicle depletion was accelerated via PI3K-AKT-rpS6 signaling pathway activation. In vitro follicle culture experiments revealed that inhibiting WIP1 activity impaired follicular development and oocyte quality. In vitro granulosa cell experiments further indicated that downregulating WIP1 expression promoted granulosa cell death via WIP1-p53-BAX signaling pathway-mediated apoptosis. These findings suggest that appropriate WIP1 expression is essential for healthy follicular development, and decreased WIP1 expression accelerates ovarian aging by promoting follicular atresia and primordial follicle activation.
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Affiliation(s)
| | | | | | | | | | | | | | | | - Ya Li
- Correspondence: (Y.L.); (S.W.); Tel.: +86-27-83663078 (Y.L. & S.W.)
| | - Shixuan Wang
- Correspondence: (Y.L.); (S.W.); Tel.: +86-27-83663078 (Y.L. & S.W.)
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Desai S, Guddati AK. Bimodal Age Distribution in Cancer Incidence. World J Oncol 2022; 13:329-336. [PMID: 36660209 PMCID: PMC9822681 DOI: 10.14740/wjon1424] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2021] [Accepted: 11/05/2022] [Indexed: 12/26/2022] Open
Abstract
Cancer is caused by accumulation of genetic changes which include activation of protooncogenes and loss of tumor suppressor genes. The age-specific incidence of cancer in general increases with advancing age. However, some cancers exhibit a bimodal distribution. Commonly recognized cancers with bimodal age distribution include acute lymphoblastic leukemia, osteosarcoma, Hodgkin's lymphoma, germ cell tumors and breast cancer. Delayed infection hypothesis has been used to provide explanation for the early childhood peak in leukemias and lymphomas, whereas the peak at an older age is associated with accumulation of protooncogenes and weakened immune system. Further genetic analysis and histopathological variations point to distinctly different cancers, varying genetically and histologically, which are often combined under a single category of cancers. Tumor characteristics and age distribution of these cancers varies also by population groups and has further implications on cancer screening methods. Although significant advances have been made to explain the bimodal nature of such cancers, the specific genetic mechanisms for each age distribution remain to be elucidated. Further distinction among the different cancer subtypes may lead to improvements in individual risk assessments, prevention and enhancement of treatment strategies.
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Affiliation(s)
- Shreya Desai
- Division of Hematology/Oncology, Georgia Cancer Center, Augusta University, Augusta, GA 30912, USA
| | - Achuta K. Guddati
- Division of Hematology/Oncology, Georgia Cancer Center, Augusta University, Augusta, GA 30912, USA,Corresponding Author: Achuta Kumar Guddati, Division of Hematology/Oncology, Georgia Cancer Center, Augusta University, Augusta, GA 30909, USA.
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Reichard M, Giannetti K, Ferreira T, Maouche A, Vrtílek M, Polačik M, Blažek R, Ferreira MG. Lifespan and telomere length variation across populations of wild-derived African killifish. Mol Ecol 2022; 31:5979-5992. [PMID: 34826177 DOI: 10.1111/mec.16287] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2020] [Revised: 11/15/2021] [Accepted: 11/22/2021] [Indexed: 01/31/2023]
Abstract
Telomeres and telomerase prevent the continuous erosion of chromosome-ends caused by lifelong cell division. Shortened telomeres are associated with age-related pathologies. While short telomere length is positively correlated with increased lethality at the individual level, in comparisons across species short telomeres are associated with long (and not short) lifespans. Here, we tested this contradiction between individual and evolutionary patterns in telomere length using African annual killifish. We analysed lifespan and telomere length in a set of captive strains derived from well-defined wild populations of Nothobranchius furzeri and its sister species, N. kadleci, from sites along a strong gradient of aridity which ultimately determines maximum natural lifespan. Overall, males were shorter-lived than females, and also had shorter telomeres. Male lifespan (measured in controlled laboratory conditions) was positively associated with the amount of annual rainfall in the site of strain origin. However, fish from wetter climates had shorter telomeres. In addition, individual fish which grew largest over the juvenile period possessed shorter telomeres at the onset of adulthood. This demonstrates that individual condition and environmentally-driven selection indeed modulate the relationship between telomere length and lifespan in opposite directions, validating the existence of inverse trends within a single taxon. Intraindividual heterogeneity of telomere length (capable to detect very short telomeres) was not associated with mean telomere length, suggesting that the shortest telomeres are controlled by regulatory pathways other than those that determine mean telomere length. The substantial variation in telomere length between strains from different environments identifies killifish as a powerful system in understanding the adaptive value of telomere length.
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Affiliation(s)
- Martin Reichard
- Czech Academy of Sciences, Institute of Vertebrate Biology, Brno, Czech Republic.,Department of Ecology and Vertebrate Zoology, Faculty of Biology and Environmental Protection, University of Łódź, Łódź, Poland.,Department of Botany and Zoology, Faculty of Science, Masaryk University, Brno, Czech Republic
| | | | | | - Ahmed Maouche
- Institute for Research on Cancer and Aging of Nice (IRCAN), UMR7284 U1081 Université Côte d'Azur, Nice, France
| | - Milan Vrtílek
- Czech Academy of Sciences, Institute of Vertebrate Biology, Brno, Czech Republic
| | - Matej Polačik
- Czech Academy of Sciences, Institute of Vertebrate Biology, Brno, Czech Republic
| | - Radim Blažek
- Czech Academy of Sciences, Institute of Vertebrate Biology, Brno, Czech Republic
| | - Miguel Godinho Ferreira
- Instituto Gulbenkian de Ciência, Oeiras, Portugal.,Institute for Research on Cancer and Aging of Nice (IRCAN), UMR7284 U1081 Université Côte d'Azur, Nice, France
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35
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Jin R, Niu C, Wu F, Zhou S, Han T, Zhang Z, Li E, Zhang X, Xu S, Wang J, Tian S, Chen W, Ye Q, Cao C, Cheng L. DNA damage contributes to age-associated differences in SARS-CoV-2 infection. Aging Cell 2022; 21:e13729. [PMID: 36254583 PMCID: PMC9741512 DOI: 10.1111/acel.13729] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Revised: 09/01/2022] [Accepted: 09/26/2022] [Indexed: 12/14/2022] Open
Abstract
Coronavirus disease 2019 (COVID-19), caused by the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), is known to disproportionately affect older individuals. How aging processes affect SARS-CoV-2 infection and disease progression remains largely unknown. Here, we found that DNA damage, one of the hallmarks of aging, promoted SARS-CoV-2 infection in vitro and in vivo. SARS-CoV-2 entry was facilitated by DNA damage caused by extrinsic genotoxic stress or telomere dysfunction and hampered by inhibition of the DNA damage response (DDR). Mechanistic analysis revealed that DDR increased expression of angiotensin-converting enzyme 2 (ACE2), the primary receptor of SARS-CoV-2, by activation of transcription factor c-Jun. Importantly, in vivo experiment using a mouse-adapted viral strain also verified the significant roles of DNA damage in viral entry and severity of infection. Expression of ACE2 was elevated in the older human and mice tissues and positively correlated with γH2AX, a DNA damage biomarker, and phosphorylated c-Jun (p-c-Jun). Finally, nicotinamide mononucleotide (NMN) and MDL-800, which promote DNA repair, alleviated SARS-CoV-2 infection and disease severity in vitro and in vivo. Taken together, our data provide insights into the age-associated differences in SARS-CoV-2 infection and a novel approach for antiviral intervention.
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Affiliation(s)
- Rui Jin
- Beijing Institute of BiotechnologyBeijingChina
| | - Chang Niu
- College of Life SciencesCapital Normal UniversityBeijingChina
| | - Fengyun Wu
- College of Life SciencesCapital Normal UniversityBeijingChina
| | - Sixin Zhou
- Department of SurgeryChinese PLA General HospitalBeijingChina
| | - Tao Han
- BaYi Children's Hospital, the Seventh Medical CenterChinese PLA General HospitalBeijingChina
| | - Zhe Zhang
- Beijing Institute of BiotechnologyBeijingChina
| | - Entao Li
- Key Laboratory of Jilin Province for Zoonosis Prevention and Control, Changchun Veterinary Research InstituteChinese Academy of Agricultural SciencesChangchunChina
| | - Xiaona Zhang
- College of Life SciencesCapital Normal UniversityBeijingChina
| | - Shanrong Xu
- School of Life ScienceAnqing Normal UniversityAnqingChina
| | - Jiadong Wang
- Department of Radiation Medicine, School of Basic Medical Sciences, Institute of Systems BiomedicinePeking University Health Science CenterBeijingChina
| | - Shen Tian
- College of Life SciencesCapital Normal UniversityBeijingChina
| | - Wei Chen
- Beijing Institute of BiotechnologyBeijingChina
| | - Qinong Ye
- Beijing Institute of BiotechnologyBeijingChina
| | - Cheng Cao
- Beijing Institute of BiotechnologyBeijingChina
| | - Long Cheng
- Beijing Institute of BiotechnologyBeijingChina
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36
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Jin M, Cai SQ. Mechanisms Underlying Brain Aging Under Normal and Pathological Conditions. Neurosci Bull 2022; 39:303-314. [PMID: 36437436 PMCID: PMC9905409 DOI: 10.1007/s12264-022-00969-9] [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: 03/09/2022] [Accepted: 06/17/2022] [Indexed: 11/28/2022] Open
Abstract
Aging is a major risk factor for many human diseases, including cognitive impairment, which affects a large population of the elderly. In the past few decades, our understanding of the molecular and cellular mechanisms underlying the changes associated with aging and age-related diseases has expanded greatly, shedding light on the potential role of these changes in cognitive impairment. In this article, we review recent advances in understanding of the mechanisms underlying brain aging under normal and pathological conditions, compare their similarities and differences, discuss the causative and adaptive mechanisms of brain aging, and finally attempt to find some rules to guide us on how to promote healthy aging and prevent age-related diseases.
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Affiliation(s)
- Menglong Jin
- Institute of Neuroscience and State Key Laboratory of Neuroscience, CAS Center for Excellence in Brain Science and Intelligence Technology, Chinese Academy of Sciences, Shanghai, 200031 China ,University of Chinese Academy of Sciences, Beijing, 100049 China
| | - Shi-Qing Cai
- Institute of Neuroscience and State Key Laboratory of Neuroscience, CAS Center for Excellence in Brain Science and Intelligence Technology, Chinese Academy of Sciences, Shanghai, 200031, China.
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37
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Pluta R, Jabłoński M, Januszewski S, Czuczwar SJ. Crosstalk between the aging intestinal microflora and the brain in ischemic stroke. Front Aging Neurosci 2022; 14:998049. [PMID: 36275012 PMCID: PMC9582537 DOI: 10.3389/fnagi.2022.998049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Accepted: 09/22/2022] [Indexed: 11/28/2022] Open
Abstract
Aging is an inevitable phenomenon experienced by animals and humans, and its intensity varies from one individual to another. Aging has been identified as a risk factor for neurodegenerative disorders by influencing the composition of the gut microbiota, microglia activity and cognitive performance. The microbiota-gut-brain axis is a two-way communication path between the gut microbes and the host brain. The aging intestinal microbiota communicates with the brain through secreted metabolites (neurotransmitters), and this phenomenon leads to the destruction of neuronal cells. Numerous external factors, such as living conditions and internal factors related to the age of the host, affect the condition of the intestinal microflora in the form of dysbiosis. Dysbiosis is defined as changes in the composition and function of the gut microflora that affect the pathogenesis, progress, and response to treatment of a disease entity. Dysbiosis occurs when changes in the composition and function of the microbiota exceed the ability of the microflora and its host to restore equilibrium. Dysbiosis leading to dysfunction of the microbiota-gut-brain axis regulates the development and functioning of the host’s nervous, immune, and metabolic systems. Dysbiosis, which causes disturbances in the microbiota-gut-brain axis, is seen with age and with the onset of stroke, and is closely related to the development of risk factors for stroke. The review presents and summarizes the basic elements of the microbiota-gut-brain axis to better understand age-related changes in signaling along the microbiota-gut-brain axis and its dysfunction after stroke. We focused on the relationship between the microbiota-gut-brain axis and aging, emphasizing that all elements of the microbiota-gut-brain axis are subject to age-related changes. We also discuss the interaction between microbiota, microglia and neurons in the aged individuals in the brain after ischemic stroke. Finally, we presented preclinical and clinical studies on the role of the aged microbiota-gut-brain axis in the development of risk factors for stroke and changes in the post-stroke microflora.
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Affiliation(s)
- Ryszard Pluta
- Laboratory of Ischemic and Neurodegenerative Brain Research, Mossakowski Medical Research Institute, Polish Academy of Sciences, Warsaw, Poland
- *Correspondence: Ryszard Pluta,
| | - Mirosław Jabłoński
- Department of Rehabilitation and Orthopedics, Medical University of Lublin, Lublin, Poland
| | - Sławomir Januszewski
- Laboratory of Ischemic and Neurodegenerative Brain Research, Mossakowski Medical Research Institute, Polish Academy of Sciences, Warsaw, Poland
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38
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Cai Y, Cao H, Wang F, Zhang Y, Kapranov P. Complex genomic patterns of abasic sites in mammalian DNA revealed by a high-resolution SSiNGLe-AP method. Nat Commun 2022; 13:5868. [PMID: 36198706 PMCID: PMC9534904 DOI: 10.1038/s41467-022-33594-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Accepted: 09/23/2022] [Indexed: 11/30/2022] Open
Abstract
DNA damage plays a critical role in biology and diseases; however, how different types of DNA lesions affect cellular functions is far from clear mostly due to the paucity of high-resolution methods that can map their locations in complex genomes, such as those of mammals. Here, we present the development and validation of SSiNGLe-AP method, which can map a common type of DNA damage, abasic (AP) sites, in a genome-wide and high-resolution manner. We apply this method to six different tissues of mice with different ages and human cancer cell lines. We find a nonrandom distribution of AP sites in the mammalian genome that exhibits dynamic enrichment at specific genomic locations, including single-nucleotide hotspots, and is significantly influenced by gene expression, age and tissue type in particular. Overall, these results suggest that we are only starting to understand the true complexities in the genomic patterns of DNA damage.
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Affiliation(s)
- Ye Cai
- Institute of Genomics, School of Medicine, Huaqiao University, 668 Jimei Road, 361021, Xiamen, China
| | - Huifen Cao
- Institute of Genomics, School of Medicine, Huaqiao University, 668 Jimei Road, 361021, Xiamen, China.
| | - Fang Wang
- Institute of Genomics, School of Medicine, Huaqiao University, 668 Jimei Road, 361021, Xiamen, China
| | - Yufei Zhang
- Institute of Genomics, School of Medicine, Huaqiao University, 668 Jimei Road, 361021, Xiamen, China
| | - Philipp Kapranov
- Institute of Genomics, School of Medicine, Huaqiao University, 668 Jimei Road, 361021, Xiamen, China.
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39
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Erichsen L, Adjaye J. Crosstalk between age accumulated DNA-damage and the SIRT1-AKT-GSK3ß axis in urine derived renal progenitor cells. Aging (Albany NY) 2022; 14:8179-8204. [PMID: 36170022 PMCID: PMC9648809 DOI: 10.18632/aging.204300] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Accepted: 09/08/2022] [Indexed: 12/02/2022]
Abstract
The aging process is manifested by a multitude of inter-linked biological processes. These processes contribute to genomic instability, telomere attrition, epigenetic alterations, loss of proteostasis, de-regulated nutrient-sensing, mitochondrial dysfunction, cellular senescence, stem cell exhaustion, and altered intercellular communication. The mammalian ortholog of the yeast silent information regulator (Sir2) SIRT1 is a NAD+-dependent class III histone deacetylase and has been recognized to be involved in many of the forementioned processes. Furthermore, the physiological activity of several Sirtuin family members has been connected to the regulation of life span of lower organisms (Caenorhabditis elegans and Drosophila melanogaster) as well as mammals. In the present study, we provide evidence that SIX2-positive urine derived renal progenitor cells-UdRPCs isolated directly from human urine show typical hallmarks of aging. This includes the subsequent transcriptional downregulation of SIRT1 and its downstream targets AKT and GSK3ß with increased donor age. This transcriptional downregulation is accompanied by an increase in DNA damage and transcriptional levels of several cell cycle inhibitors such as P16. We provide evidence that the renal progenitor transcription factor SIX2 binds to the coding sequence of SIRT1. Furthermore, we show that the SIRT1 promoter region is methylation sensitive and becomes methylated during aging, dividing them into SIRT1-high and -low expressing UdRPCs. Our results highlight the importance of SIRT1 in DNA damage repair recognition in UdRPCs and the control of differentiation by regulating the activation of GSK3β through AKT.
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Affiliation(s)
- Lars Erichsen
- Institute for Stem Cell Research and Regenerative Medicine, Medical Faculty, Heinrich-Heine- University Düsseldorf, Düsseldorf 40225, Germany
| | - James Adjaye
- Institute for Stem Cell Research and Regenerative Medicine, Medical Faculty, Heinrich-Heine- University Düsseldorf, Düsseldorf 40225, Germany
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40
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Zhang S, Zhu N, Gu J, Li HF, Qiu Y, Liao DF, Qin L. Crosstalk between Lipid Rafts and Aging: New Frontiers for Delaying Aging. Aging Dis 2022; 13:1042-1055. [PMID: 35855333 PMCID: PMC9286918 DOI: 10.14336/ad.2022.0116] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2021] [Accepted: 01/16/2022] [Indexed: 12/15/2022] Open
Abstract
With the rapid aging in the global population, delay of aging has become a hot research topic. Lipid rafts (LRs) are microdomains in the plasma membrane that contain sphingolipids and cholesterol. Emerging evidence indicates an interesting interplay between LRs and aging. LRs and their components are altered with aging. Further, the aging process is strongly influenced by LRs. In recent years, LRs and their component signaling molecules have been recognized to affect aging by interfering with its hallmarks. Therefore, targeting LRs is a promising strategy to delay aging.
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Affiliation(s)
- Shuo Zhang
- 1Division of Stem Cell Regulation and Application, School of Pharmacy, Hunan University of Chinese Medicine, Changsha, China
| | - Neng Zhu
- 2Department of Urology, The First Hospital of Hunan University of Chinese Medicine, Changsha, China
| | - Jia Gu
- 1Division of Stem Cell Regulation and Application, School of Pharmacy, Hunan University of Chinese Medicine, Changsha, China
| | - Hong-Fang Li
- 1Division of Stem Cell Regulation and Application, School of Pharmacy, Hunan University of Chinese Medicine, Changsha, China
| | - Yun Qiu
- 1Division of Stem Cell Regulation and Application, School of Pharmacy, Hunan University of Chinese Medicine, Changsha, China
| | - Duan-Fang Liao
- 1Division of Stem Cell Regulation and Application, School of Pharmacy, Hunan University of Chinese Medicine, Changsha, China
| | - Li Qin
- 1Division of Stem Cell Regulation and Application, School of Pharmacy, Hunan University of Chinese Medicine, Changsha, China.,3Hunan Province Engineering Research Center of Bioactive Substance Discovery of Traditional Chinese Medicine, Hunan University of Chinese Medicine, Changsha, China
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41
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Ridderinkhof KR, Krugers HJ. Horizons in Human Aging Neuroscience: From Normal Neural Aging to Mental (Fr)Agility. Front Hum Neurosci 2022; 16:815759. [PMID: 35845248 PMCID: PMC9277589 DOI: 10.3389/fnhum.2022.815759] [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: 11/15/2021] [Accepted: 05/19/2022] [Indexed: 11/13/2022] Open
Abstract
While aging is an important risk factor for neurodegenerative disorders such as Alzheimer's disease and Parkinson's disease, age-related cognitive decline can also manifest without apparent neurodegenerative changes. In this review, we discuss molecular, cellular, and network changes that occur during normal aging in the absence of neurodegenerative disease. Emerging findings reveal that these changes include metabolic alterations, oxidative stress, DNA damage, inflammation, calcium dyshomeostasis, and several other hallmarks of age-related neural changes that do not act on their own, but are often interconnected and together may underlie age-related alterations in brain plasticity and cognitive function. Importantly, age-related cognitive decline may not be reduced to a single neurobiological cause, but should instead be considered in terms of a densely connected system that underlies age-related cognitive alterations. We speculate that a decline in one hallmark of neural aging may trigger a decline in other, otherwise thus far stable subsystems, thereby triggering a cascade that may at some point also incur a decline of cognitive functions and mental well-being. Beyond studying the effects of these factors in isolation, considerable insight may be gained by studying the larger picture that entails a representative collection of such factors and their interactions, ranging from molecules to neural networks. Finally, we discuss some potential interventions that may help to prevent these alterations, thereby reducing cognitive decline and mental fragility, and enhancing mental well-being, and healthy aging.
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Affiliation(s)
- K. Richard Ridderinkhof
- Department of Psychology, University of Amsterdam, Amsterdam, Netherlands
- Amsterdam Center for Brain and Cognition (ABC), University of Amsterdam, Amsterdam, Netherlands
| | - Harm J. Krugers
- Amsterdam Center for Brain and Cognition (ABC), University of Amsterdam, Amsterdam, Netherlands
- SILS-CNS, Faculty of Science, University of Amsterdam, Amsterdam, Netherlands
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42
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Abstract
The lungs are continually subjected to noxious and inert substances, are immunologically active, and are in a constant state of damage and repair. This makes the pulmonary system particularly vulnerable to diseases of aging. Aging can be understood as random molecular damage that is unrepaired and accumulates over time, resulting in cellular defects and tissue dysfunction. The breakdown of cellular mechanisms, including stem cell exhaustion, genomic instability, telomere attrition, epigenetic alteration, loss of proteostasis, deregulated nutrient sensing, mitochondrial dysfunction, cellular senescence, altered intercellular communication, and changes in the extracellular matrix is thought to advance the aging process itself. Chronic obstructive pulmonary disease (COPD), idiopathic pulmonary fibrosis (IPF), and cancers illustrate a pathologic breakdown in these mechanisms beyond normal aging. The immune system becomes less effective with advancing age. There is a low-level state of chronic inflammation termed inflammaging which is thought to be driven by immunosenescence, the changes in the innate and adaptive immune systems with advancing age that lead to dysregulation and decreased effectiveness of the immune system. These processes of aging lead to expected changes in the form and function of the respiratory system, most notably a loss of lung elasticity, decrease in respiratory muscle strength, increase in ventilation-perfusion mismatching, and stiffening of the vasculature. The astute clinician is aware of these expected findings and does not often attribute dyspnea to aging alone. Maintaining a low threshold to investigate for comorbid disease and understanding how pulmonary disease presents differently in the elderly than in younger adults can improve clinical outcomes. © 2022 American Physiological Society. Compr Physiol 12:3509-3522, 2022.
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Affiliation(s)
- Julia Budde
- New York City Health and Hospitals/Metropolitan Hospital, New York, New York, USA
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43
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Haslem L, Hays JM, Hays FA. p66Shc in Cardiovascular Pathology. Cells 2022; 11:cells11111855. [PMID: 35681549 PMCID: PMC9180016 DOI: 10.3390/cells11111855] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2022] [Revised: 05/30/2022] [Accepted: 06/01/2022] [Indexed: 02/06/2023] Open
Abstract
p66Shc is a widely expressed protein that governs a variety of cardiovascular pathologies by generating, and exacerbating, pro-apoptotic ROS signals. Here, we review p66Shc’s connections to reactive oxygen species, expression, localization, and discuss p66Shc signaling and mitochondrial functions. Emphasis is placed on recent p66Shc mitochondrial function discoveries including structure/function relationships, ROS identity and regulation, mechanistic insights, and how p66Shc-cyt c interactions can influence p66Shc mitochondrial function. Based on recent findings, a new p66Shc mitochondrial function model is also put forth wherein p66Shc acts as a rheostat that can promote or antagonize apoptosis. A discussion of how the revised p66Shc model fits previous findings in p66Shc-mediated cardiovascular pathology follows.
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Affiliation(s)
- Landon Haslem
- Biochemistry and Molecular Biology Department, College of Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA; (L.H.); (J.M.H.)
| | - Jennifer M. Hays
- Biochemistry and Molecular Biology Department, College of Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA; (L.H.); (J.M.H.)
| | - Franklin A. Hays
- Biochemistry and Molecular Biology Department, College of Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA; (L.H.); (J.M.H.)
- Stephenson Center, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA
- Harold Hamm Diabetes Center, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA
- Correspondence:
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Chen L, Ganz PA, Sehl ME. DNA Methylation, Aging, and Cancer Risk: A Mini-Review. FRONTIERS IN BIOINFORMATICS 2022; 2:847629. [PMID: 36304336 PMCID: PMC9580889 DOI: 10.3389/fbinf.2022.847629] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2022] [Accepted: 03/21/2022] [Indexed: 11/13/2022] Open
Abstract
Accumulation of somatic mutations and genomic instability are hallmarks of both aging and cancer. Epigenetic alterations occur across cell types and tissues with advancing age. DNA methylation-based estimates of biologic age can predict important age-related outcomes, including risk of frailty and mortality, and most recently have been shown to be associated with risk of developing cancer. In this mini-review, we examine pathways known to exhibit altered methylation in aging tissues, pre-malignant lesions, and tumors and review methodologies of epigenetic clocks that reliably predict cancer risk, including those derived from methylation studies of peripheral blood, as well as those methylation levels from within the tissues at high risk of cancer.
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Affiliation(s)
- Larry Chen
- Computational and Systems Biology Program, University of California, Los Angeles, Los Angeles, CA, United States
| | - Patricia A. Ganz
- Division of Hematology-Oncology, Department of Medicine, UCLA David Geffen School of Medicine, Los Angeles, CA, United States
- Department of Health Policy and Management, Fielding School of Public Health, University of California, Los Angeles, Los Angeles, CA, United States
| | - Mary E. Sehl
- Division of Hematology-Oncology, Department of Medicine, UCLA David Geffen School of Medicine, Los Angeles, CA, United States
- Department of Computational Medicine, UCLA David Geffen School of Medicine, Los Angeles, CA, United States
- *Correspondence: Mary E. Sehl,
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45
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Majid S, Van Belleghem F, Ploem JP, Wouters A, Blust R, Smeets K. Interactive toxicity of copper and cadmium in regenerating and adult planarians. CHEMOSPHERE 2022; 297:133819. [PMID: 35114265 DOI: 10.1016/j.chemosphere.2022.133819] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/03/2021] [Revised: 12/31/2021] [Accepted: 01/28/2022] [Indexed: 06/14/2023]
Abstract
In a polluted environment, metals are present as complex mixtures. As a result, organisms are exposed to different metals at the same time, which affects both metal-specific as well as overall toxicity. Detailed information about the molecular mechanisms underlying the adverse effects of combined exposures remains limited in terms of different life stages. In this study, the freshwater planarian Schmidtea mediterranea was used to investigate developmental and physiological responses associated with a combined exposure to Cu and Cd. In addition, the cellular and molecular mechanisms underlying the provoked adverse effects were studied in different exposure scenarios. Mixed exposure resulted in a decline in survival, diverse non-lethal morphological changes, neuroregenerative impairments, altered behaviour and a limited repair capacity. Underlying to these effects, the cellular redox state was altered in all exposure conditions. In adult animals, this led to DNA damage and corresponding transcriptional changes in cell cycle and DNA repair genes. In regenerating animals, changes in hydrogen peroxide and glutathione contents led to regenerative defects. Overall, our results demonstrate that (1) developing organisms are more susceptible to metal exposures, and (2) the toxicity of an individual metal increases significantly in a mixed exposure scenario. These aspects have to be included in current risk assessment strategies.
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Affiliation(s)
- Sanah Majid
- Laboratory of Toxicology, Centre for Environmental Sciences (CMK), Hasselt University, Diepenbeek, 3590, Belgium; Systemic Physiological & Eco-toxicological Research (SPHERE), Department of Biology, University of Antwerp, Groenenborgerlaan, 2020, Belgium
| | - Frank Van Belleghem
- Laboratory of Toxicology, Centre for Environmental Sciences (CMK), Hasselt University, Diepenbeek, 3590, Belgium; Department of Environmental Sciences, Faculty of Science, Open University of the Netherlands, Heerlen, 6419, AT, the Netherlands
| | - Jan-Pieter Ploem
- Laboratory of Toxicology, Centre for Environmental Sciences (CMK), Hasselt University, Diepenbeek, 3590, Belgium
| | - Annelies Wouters
- Laboratory of Toxicology, Centre for Environmental Sciences (CMK), Hasselt University, Diepenbeek, 3590, Belgium
| | - Ronny Blust
- Systemic Physiological & Eco-toxicological Research (SPHERE), Department of Biology, University of Antwerp, Groenenborgerlaan, 2020, Belgium
| | - Karen Smeets
- Laboratory of Toxicology, Centre for Environmental Sciences (CMK), Hasselt University, Diepenbeek, 3590, Belgium.
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46
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Zorina A, Zorin V, Kudlay D, Kopnin P. Age-Related Changes in the Fibroblastic Differon of the Dermis: Role in Skin Aging. Int J Mol Sci 2022; 23:ijms23116135. [PMID: 35682813 PMCID: PMC9181700 DOI: 10.3390/ijms23116135] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Revised: 05/27/2022] [Accepted: 05/27/2022] [Indexed: 02/06/2023] Open
Abstract
Skin aging is a multi-factorial process that affects nearly every aspect of skin biology and function. The processes developing in the skin during aging are based on fundamental molecular mechanisms associated with fibroblasts, the main cellular population of the dermis. It has been revealed that the amount of fibroblasts decreases markedly with age and their functional activity is also reduced. This inevitably leads to a decrease in the regenerative abilities of the skin and the progression of its aging. In this review we consider the mechanisms underlying these processes, mainly the changes observed with age in the stem/progenitor cells that constitute the fibroblastic differon of the dermis and form their microenvironment (niches). These changes lead to the depletion of stem cells, which, in turn, leads to a decrease in the number of differentiated (mature) dermal fibroblasts responsible for the production of the dermal extracellular matrix and its remodeling. We also describe in detail DNA damages, their cellular and systemic consequences, molecular mechanisms of DNA damage response, and also the role of fibroblast senescence in skin aging.
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Affiliation(s)
- Alla Zorina
- Human Stem Cells Institute, 119333 Moscow, Russia; (A.Z.); (V.Z.)
| | - Vadim Zorin
- Human Stem Cells Institute, 119333 Moscow, Russia; (A.Z.); (V.Z.)
| | - Dmitry Kudlay
- Department of Pharmacology, Institute of Pharmacy, I. M. Sechenov First Moscow State Medical University (Sechenov University), 119991 Moscow, Russia;
| | - Pavel Kopnin
- N. N. Blokhin National Medical Research Oncology Center, Ministry of Health of Russia, 115478 Moscow, Russia
- Correspondence: ; Tel.: +7-49-9324-1739
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47
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Zhou R, Qian S, Cho WCS, Zhou J, Jin C, Zhong Y, Wang J, Zhang X, Xu Z, Tian M, Chan LWC, Zhang H. Microbiota-microglia connections in age-related cognition decline. Aging Cell 2022; 21:e13599. [PMID: 35349746 PMCID: PMC9124309 DOI: 10.1111/acel.13599] [Citation(s) in RCA: 28] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2022] [Revised: 03/08/2022] [Accepted: 03/13/2022] [Indexed: 12/13/2022] Open
Abstract
Aging is an inevitable process that all individuals experience, of which the extent differs among individuals. It has been recognized as the risk factor of neurodegenerative diseases by affecting gut microbiota compositions, microglia, and cognition abilities. Aging‐induced changes in gut microbiota compositions have a critical role in orchestrating the morphology and functions of microglia through the gut‐brain axis. Gut microbiota communicates with microglia by its secreted metabolites and neurotransmitters. This is highly associated with age‐related cognitive declines. Here, we review the main composition of microbiota in the aged individuals, outline the changes of the brain in age‐related cognitive decline from a neuroinflammation perspective, especially the changes of morphology and functions of microglia, discuss the crosstalk between microbiota and microglia in the aged brain and further highlight the role of microbiota‐microglia connections in neurodegenerative diseases (Alzheimer's disease and Parkinson's disease).
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Affiliation(s)
- Rui Zhou
- Department of Nuclear Medicine and Medical PET Center The Second Affiliated Hospital of Zhejiang University School of Medicine Hangzhou China
- Department of Health Technology and Informatics The Hong Kong Polytechnic University Hong Kong SAR China
| | - Shufang Qian
- Department of Nuclear Medicine and Medical PET Center The Second Affiliated Hospital of Zhejiang University School of Medicine Hangzhou China
| | - William C. S. Cho
- Department of Clinical Oncology Queen Elizabeth Hospital Hong Kong SAR China
| | - Jinyun Zhou
- Department of Nuclear Medicine and Medical PET Center The Second Affiliated Hospital of Zhejiang University School of Medicine Hangzhou China
| | - Chentao Jin
- Department of Nuclear Medicine and Medical PET Center The Second Affiliated Hospital of Zhejiang University School of Medicine Hangzhou China
| | - Yan Zhong
- Department of Nuclear Medicine and Medical PET Center The Second Affiliated Hospital of Zhejiang University School of Medicine Hangzhou China
| | - Jing Wang
- Department of Nuclear Medicine and Medical PET Center The Second Affiliated Hospital of Zhejiang University School of Medicine Hangzhou China
| | - Xiaohui Zhang
- Department of Nuclear Medicine and Medical PET Center The Second Affiliated Hospital of Zhejiang University School of Medicine Hangzhou China
| | - Zhoujiao Xu
- Department of Nuclear Medicine and Medical PET Center The Second Affiliated Hospital of Zhejiang University School of Medicine Hangzhou China
| | - Mei Tian
- Department of Nuclear Medicine and Medical PET Center The Second Affiliated Hospital of Zhejiang University School of Medicine Hangzhou China
| | - Lawrence W. C. Chan
- Department of Health Technology and Informatics The Hong Kong Polytechnic University Hong Kong SAR China
| | - Hong Zhang
- Department of Nuclear Medicine and Medical PET Center The Second Affiliated Hospital of Zhejiang University School of Medicine Hangzhou China
- Key Laboratory for Biomedical Engineering of Ministry of Education Zhejiang University Hangzhou China
- The College of Biomedical Engineering and Instrument Science of Zhejiang University Hangzhou China
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48
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Promislow D, Anderson RM, Scheffer M, Crespi B, DeGregori J, Harris K, Horowitz BN, Levine ME, Riolo MA, Schneider DS, Spencer SL, Valenzano DR, Hochberg ME. Resilience integrates concepts in aging research. iScience 2022; 25:104199. [PMID: 35494229 PMCID: PMC9044173 DOI: 10.1016/j.isci.2022.104199] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Aging research is unparalleled in the breadth of disciplines it encompasses, from evolutionary studies examining the forces that shape aging to molecular studies uncovering the underlying mechanisms of age-related functional decline. Despite a common focus to advance our understanding of aging, these disciplines have proceeded along distinct paths with little cross-talk. We propose that the concept of resilience can bridge this gap. Resilience describes the ability of a system to respond to perturbations by returning to its original state. Although resilience has been applied in a few individual disciplines in aging research such as frailty and cognitive decline, it has not been explored as a unifying conceptual framework that is able to connect distinct research fields. We argue that because a resilience-based framework can cross broad physiological levels and time scales it can provide the missing links that connect these diverse disciplines. The resulting framework will facilitate predictive modeling and validation and influence targets and directions in research on the biology of aging.
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Affiliation(s)
- Daniel Promislow
- Department of Lab Medicine and Pathology, University of Washington School of Medicine, Seattle, WA 98195, USA
- Department of Biology, University of Washington, Seattle, WA 98195, USA
- Corresponding author
| | - Rozalyn M. Anderson
- Department of Medicine, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI 53726, USA
- GRECC, William S. Middleton Memorial Veterans Hospital, Madison, WI 53705, USA
- Corresponding author
| | - Marten Scheffer
- Department of Aquatic Ecology and Water Quality Management, Wageningen University, Wageningen, the Netherlands
- Santa Fe Institute, Santa Fe, NM 87501, USA
- Corresponding author
| | - Bernard Crespi
- Department of Biological Sciences, Simon Fraser University, Burnaby, BC V5A 1S6, Canada
| | - James DeGregori
- Department of Biochemistry and Molecular Genetics, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Kelley Harris
- Department of Genome Sciences, University of Washington, Seattle, WA 98195, USA
| | | | - Morgan E. Levine
- Department of Pathology, Yale University School of Medicine, New Haven, CT 06524, USA
| | | | - David S. Schneider
- Department of Microbiology and Immunology, Stanford University, Stanford, CA 94305, USA
| | - Sabrina L. Spencer
- Department of Biochemistry and BioFrontiers Institute, University of Colorado-Boulder, Boulder, CO 80303, USA
| | - Dario Riccardo Valenzano
- Max Planck Institute for Biology of Ageing, Cologne, Germany
- CECAD, University of Cologne, Cologne, Germany
| | - Michael E. Hochberg
- Santa Fe Institute, Santa Fe, NM 87501, USA
- ISEM, Université de Montpellier, CNRS, IRD, EPHE, Montpellier, 34095 France
- Corresponding author
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49
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Rahmouni M, Laville V, Spadoni JL, Jdid R, Eckhart L, Gruber F, Labib T, Coulonges C, Carpentier W, Latreille J, Morizot F, Tschachler E, Ezzedine K, Le Clerc S, Zagury JF. Identification of New Biological Pathways Involved in Skin Aging From the Analysis of French Women Genome-Wide Data. Front Genet 2022; 13:836581. [PMID: 35401686 PMCID: PMC8987498 DOI: 10.3389/fgene.2022.836581] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Accepted: 03/01/2022] [Indexed: 11/30/2022] Open
Abstract
Skin aging is an ineluctable process leading to the progressive loss of tissue integrity and is characterized by various outcomes such as wrinkling and sagging. Researchers have identified impacting environmental factors (sun exposure, smoking, etc.) and several molecular mechanisms leading to skin aging. We have previously performed genome-wide association studies (GWAS) in 502 very-well characterized French women, looking for associations with four major outcomes of skin aging, namely, photoaging, solar lentigines, wrinkling, and sagging, and this has led to new insights into the molecular mechanisms of skin aging. Since individual SNP associations in GWAS explain only a small fraction of the genetic impact in complex polygenic phenotypes, we have made the integration of these genotypes into the reference Kegg biological pathways and looked for associations by the gene set enrichment analysis (GSEA) approach. 106 pathways were tested for association with the four outcomes of skin aging. This biological pathway analysis revealed new relevant pathways and genes, some likely specific of skin aging such as the WNT7B and PRKCA genes in the “melanogenesis” pathway and some likely involved in global aging such as the DDB1 gene in the “nucleotide excision repair” pathway, not picked up in the previously published GWAS. Overall, our results suggest that the four outcomes of skin aging possess specific molecular mechanisms such as the “proteasome” and “mTOR signaling pathway” but may also share common molecular mechanisms such as “nucleotide excision repair.”
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Affiliation(s)
- Myriam Rahmouni
- Équipe Génomique, Bioinformatique et Chimie Moléculaire (EA 7528), Conservatoire National des Arts et Métiers, HESAM Université, Paris, France
| | - Vincent Laville
- Équipe Génomique, Bioinformatique et Chimie Moléculaire (EA 7528), Conservatoire National des Arts et Métiers, HESAM Université, Paris, France
| | - Jean-Louis Spadoni
- Équipe Génomique, Bioinformatique et Chimie Moléculaire (EA 7528), Conservatoire National des Arts et Métiers, HESAM Université, Paris, France
| | - Randa Jdid
- Chanel R&T, Department of Skin Knowledge and Women Beauty, Pantin, France
| | - Leopold Eckhart
- Department of Dermatology, Medical University of Vienna, Vienna, Austria
| | - Florian Gruber
- Department of Dermatology, Medical University of Vienna, Vienna, Austria.,Christian Doppler Laboratory for Skin Multimodal Analytical Imaging of Aging and Senescence (SKINMAGINE), Medical University of Vienna, Vienna, Austria
| | - Taoufik Labib
- Équipe Génomique, Bioinformatique et Chimie Moléculaire (EA 7528), Conservatoire National des Arts et Métiers, HESAM Université, Paris, France
| | - Cedric Coulonges
- Équipe Génomique, Bioinformatique et Chimie Moléculaire (EA 7528), Conservatoire National des Arts et Métiers, HESAM Université, Paris, France
| | - Wassila Carpentier
- Plate-Forme Post-Génomique P3S, Hôpital Pitié-Salpêtrière, Paris, France
| | - Julie Latreille
- Chanel R&T, Department of Skin Knowledge and Women Beauty, Pantin, France
| | - Frederique Morizot
- Chanel R&T, Department of Skin Knowledge and Women Beauty, Pantin, France
| | - Erwin Tschachler
- Department of Dermatology, Medical University of Vienna, Vienna, Austria
| | - Khaled Ezzedine
- Department of Dermatology, Hôpital Henri Mondor and EA 7379 EPIDERM, Créteil, France
| | - Sigrid Le Clerc
- Équipe Génomique, Bioinformatique et Chimie Moléculaire (EA 7528), Conservatoire National des Arts et Métiers, HESAM Université, Paris, France
| | - Jean-François Zagury
- Équipe Génomique, Bioinformatique et Chimie Moléculaire (EA 7528), Conservatoire National des Arts et Métiers, HESAM Université, Paris, France
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50
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Abstract
The direct (eg, radiation, microgravity) and indirect (eg, lifestyle perturbations) effects of spaceflight extend across multiple systems resulting in whole-organism cardiovascular deconditioning. For over 50 years, National Aeronautics and Space Administration has continually enhanced a countermeasures program designed to characterize and offset the adverse cardiovascular consequences of spaceflight. In this review, we provide a historical overview of research evaluating the effects of spaceflight on cardiovascular health in astronauts and outline mechanisms underpinning spaceflight-related cardiovascular alterations. We also discuss how spaceflight could be leveraged for aging, industry, and model systems such as human induced pluripotent stem cell-derived cardiomyocytes, organoid, and organ-on-a-chip technologies. Finally, we outline the increasing opportunities for scientists and clinicians to engage in cardiovascular research in space and on Earth.
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Affiliation(s)
- Jessica M Scott
- Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY (J.M.S.).,Weill Cornell Medical College, New York, NY (J.M.S.)
| | | | - Lianne Dolan
- Toronto Rehabilitation Institute, University Health Network, Toronto, ON, Canada (L.D.)
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