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Quiros-Roldan E, Sottini A, Natali PG, Imberti L. The Impact of Immune System Aging on Infectious Diseases. Microorganisms 2024; 12:775. [PMID: 38674719 PMCID: PMC11051847 DOI: 10.3390/microorganisms12040775] [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: 03/01/2024] [Revised: 03/22/2024] [Accepted: 04/09/2024] [Indexed: 04/28/2024] Open
Abstract
Immune system aging is becoming a field of increasing public health interest because of prolonged life expectancy, which is not paralleled by an increase in health expectancy. As age progresses, innate and adaptive immune systems undergo changes, which are defined, respectively, as inflammaging and immune senescence. A wealth of available data demonstrates that these two conditions are closely linked, leading to a greater vulnerability of elderly subjects to viral, bacterial, and opportunistic infections as well as lower post-vaccination protection. To face this novel scenario, an in-depth assessment of the immune players involved in this changing epidemiology is demanded regarding the individual and concerted involvement of immune cells and mediators within endogenous and exogenous factors and co-morbidities. This review provides an overall updated description of the changes affecting the aging immune system, which may be of help in understanding the underlying mechanisms associated with the main age-associated infectious diseases.
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Affiliation(s)
- Eugenia Quiros-Roldan
- Department of Infectious and Tropical Diseases, ASST- Spedali Civili and DSCS- University of Brescia, 25123 Brescia, Italy;
| | - Alessandra Sottini
- Clinical Chemistry Laboratory, Services Department, ASST Spedali Civili of Brescia, 25123 Brescia, Italy;
| | - Pier Giorgio Natali
- Mediterranean Task Force for Cancer Control (MTCC), Via Pizzo Bernina, 14, 00141 Rome, Italy;
| | - Luisa Imberti
- Section of Microbiology, University of Brescia, P. le Spedali Civili, 1, 25123 Brescia, Italy
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2
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Venz R, Goyala A, Soto-Gamez A, Yenice T, Demaria M, Ewald CY. In-vivo screening implicates endoribonuclease Regnase-1 in modulating senescence-associated lysosomal changes. GeroScience 2024; 46:1499-1514. [PMID: 37644339 PMCID: PMC10828269 DOI: 10.1007/s11357-023-00909-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Accepted: 08/07/2023] [Indexed: 08/31/2023] Open
Abstract
Accumulation of senescent cells accelerates aging and age-related diseases, whereas preventing this accumulation extends the lifespan in mice. A characteristic of senescent cells is increased staining with β-galactosidase (β-gal) ex vivo. Here, we describe a progressive accumulation of β-gal staining in the model organism C. elegans during aging. We show that distinct pharmacological and genetic interventions targeting the mitochondria and the mTORC1 to the nuclear core complex axis, the non-canonical apoptotic, and lysosomal-autophagy pathways slow the age-dependent accumulation of β-gal. We identify a novel gene, rege-1/Regnase-1/ZC3H12A/MCPIP1, modulating β-gal staining via the transcription factor ets-4/SPDEF. We demonstrate that knocking down Regnase-1 in human cell culture prevents senescence-associated β-gal accumulation. Our data provide a screening pipeline to identify genes and drugs modulating senescence-associated lysosomal phenotypes.
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Affiliation(s)
- Richard Venz
- Laboratory of Extracellular Matrix Regeneration, Institute of Translational Medicine, Department of Health Sciences and Technology, ETH Zürich, CH-8603, Schwerzenbach, Switzerland
| | - Anita Goyala
- Laboratory of Extracellular Matrix Regeneration, Institute of Translational Medicine, Department of Health Sciences and Technology, ETH Zürich, CH-8603, Schwerzenbach, Switzerland
| | - Abel Soto-Gamez
- European Institute for the Biology of Aging (ERIBA)/University Medical Center Groningen (UMCG), Groningen, The Netherlands
| | - Tugce Yenice
- Laboratory of Extracellular Matrix Regeneration, Institute of Translational Medicine, Department of Health Sciences and Technology, ETH Zürich, CH-8603, Schwerzenbach, Switzerland
| | - Marco Demaria
- European Institute for the Biology of Aging (ERIBA)/University Medical Center Groningen (UMCG), Groningen, The Netherlands
| | - Collin Y Ewald
- Laboratory of Extracellular Matrix Regeneration, Institute of Translational Medicine, Department of Health Sciences and Technology, ETH Zürich, CH-8603, Schwerzenbach, Switzerland.
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3
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Mitra J, Dharmalingam P, Kodavati MM, Guerrero EN, Rao KS, Garruto R, Hegde ML. Endogenous TDP-43 mislocalization in a novel knock-in mouse model reveals DNA repair impairment, inflammation, and neuronal senescence. RESEARCH SQUARE 2024:rs.3.rs-3879966. [PMID: 38343852 PMCID: PMC10854316 DOI: 10.21203/rs.3.rs-3879966/v1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 02/19/2024]
Abstract
TDP-43 mislocalization and aggregation are key pathological features of motor neuron diseases (MND) including amyotrophic lateral sclerosis (ALS) and frontotemporal dementia (FTD). However, transgenic hTDP-43 WT or ∆NLS-overexpression animal models mainly capture late-stages TDP-43 proteinopathy, and do not provide a complete understanding of early motor neuron-specific pathology during pre-symptomatic phases. We have now addressed this shortcoming by generating a new endogenous knock-in (KI) mouse model using a combination of CRISPR/Cas9 and FLEX Cre-switch strategy for the conditional expression of a mislocalized Tdp-43∆NLS variant of mouse Tdp-43. This variant is either expressed conditionally in whole mice or specifically in the motor neurons. The mice exhibit loss of nuclear Tdp-43 concomitant with its cytosolic accumulation and aggregation in targeted cells, leading to increased DNA double-strand breaks (DSBs), signs of inflammation and DNA damage-associated cellular senescence. Notably, unlike WT Tdp43 which functionally interacts with Xrcc4 and DNA Ligase 4, the key DSB repair proteins in the non-homologous end-joining (NHEJ) pathway, the Tdp-43∆NLS mutant sequesters them into cytosolic aggregates, exacerbating neuronal damage in mice brain. The mutant mice also exhibit myogenic degeneration in limb muscles and distinct motor deficits, consistent with the characteristics of MND. Our findings reveal progressive degenerative mechanisms in motor neurons expressing endogenous Tdp-43∆NLS mutant, independent of TDP-43 overexpression or other confounding etiological factors. Thus, this unique Tdp-43 KI mouse model, which displays key molecular and phenotypic features of Tdp-43 proteinopathy, offers a significant opportunity to further characterize the early-stage progression of MND and also opens avenues for developing DNA repair-targeted approaches for treating TDP-43 pathology-linked neurodegenerative diseases.
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4
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Wang S, El Jurdi N, Thyagarajan B, Prizment A, Blaes AH. Accelerated Aging in Cancer Survivors: Cellular Senescence, Frailty, and Possible Opportunities for Interventions. Int J Mol Sci 2024; 25:3319. [PMID: 38542292 PMCID: PMC10970400 DOI: 10.3390/ijms25063319] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2024] [Revised: 03/08/2024] [Accepted: 03/12/2024] [Indexed: 06/02/2024] Open
Abstract
The population of cancer survivors has markedly increased due to the rapid improvements in cancer treatment. However, cancer survivors experience accelerated aging, which leads to chronic diseases and other age-related conditions, such as frailty. Those conditions may persist years after cancer diagnosis and treatment. Cellular senescence, a hallmark of aging, is one of the mechanisms that contribute to accelerated aging in cancer survivors. Several aging measures, including measures based on clinical markers and biomarkers, have been proposed to estimate the aging process, and some of them have shown associations with mortality and frailty in cancer survivors. Several anti-aging interventions, including lifestyle changes and anti-aging drugs, have been proposed. Future research, particularly in large-scale studies, is needed to determine the efficiency of these aging measures and anti-aging interventions before considering their application in clinics. This review focuses on the mechanisms of cellular senescence and accelerated aging in cancer survivors, assessment of the aging process using clinical markers and biomarkers, and the high prevalence of frailty in that population, as well as possible opportunities for anti-aging interventions. A deeper understanding of aging measures and anti-aging interventions in cancer survivors will contribute to the development of effective strategies to mitigate accelerated aging in cancer survivors and improve their quality of life.
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Affiliation(s)
- Shuo Wang
- Department of Laboratory Medicine and Pathology, University of Minnesota, Minneapolis, MN 55455, USA
| | - Najla El Jurdi
- Division of Hematology, Oncology and Transplantation, University of Minnesota, Minneapolis, MN 55455, USA
| | - Bharat Thyagarajan
- Department of Laboratory Medicine and Pathology, University of Minnesota, Minneapolis, MN 55455, USA
| | - Anna Prizment
- Department of Laboratory Medicine and Pathology, University of Minnesota, Minneapolis, MN 55455, USA
| | - Anne H. Blaes
- Division of Hematology, Oncology and Transplantation, University of Minnesota, Minneapolis, MN 55455, USA
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5
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Sanghvi K, Vega-Trejo R, Nakagawa S, Gascoigne SJL, Johnson SL, Salguero-Gómez R, Pizzari T, Sepil I. Meta-analysis shows no consistent evidence for senescence in ejaculate traits across animals. Nat Commun 2024; 15:558. [PMID: 38228708 PMCID: PMC10791739 DOI: 10.1038/s41467-024-44768-4] [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: 07/13/2023] [Accepted: 01/04/2024] [Indexed: 01/18/2024] Open
Abstract
Male reproductive traits such as ejaculate size and quality, are expected to decline with advancing age due to senescence. It is however unclear whether this expectation is upheld across taxa. We perform a meta-analysis on 379 studies, to quantify the effects of advancing male age on ejaculate traits across 157 species of non-human animals. Contrary to predictions, we find no consistent pattern of age-dependent changes in ejaculate traits. This result partly reflects methodological limitations, such as studies sampling a low proportion of adult lifespan, or the inability of meta-analytical approaches to document non-linear ageing trajectories of ejaculate traits; which could potentially lead to an underestimation of senescence. Yet, we find taxon-specific differences in patterns of ejaculate senescence. For instance, older males produce less motile and slower sperm in ray-finned fishes, but larger ejaculates in insects, compared to younger males. Notably, lab rodents show senescence in most ejaculate traits measured. Our study challenges the notion of universal reproductive senescence, highlighting the need for controlled methodologies and a more nuanced understanding of reproductive senescence, cognisant of taxon-specific biology, experimental design, selection pressures, and life-history.
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Affiliation(s)
- Krish Sanghvi
- Department of Biology, University of Oxford, Oxford, UK.
| | | | - Shinichi Nakagawa
- Evolution and Ecology Research Centre, School of Biological, Earth and Environmental Sciences, University of New South Wales, Sydney, Australia
| | | | - Sheri L Johnson
- Department of Zoology, University of Otago, Dunedin, New Zealand
| | | | | | - Irem Sepil
- Department of Biology, University of Oxford, Oxford, UK.
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Yılmaz D, Mathavan N, Wehrle E, Kuhn GA, Müller R. Mouse models of accelerated aging in musculoskeletal research for assessing frailty, sarcopenia, and osteoporosis - A review. Ageing Res Rev 2024; 93:102118. [PMID: 37935249 DOI: 10.1016/j.arr.2023.102118] [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: 07/03/2023] [Revised: 10/01/2023] [Accepted: 11/03/2023] [Indexed: 11/09/2023]
Abstract
Musculoskeletal aging encompasses the decline in bone and muscle function, leading to conditions such as frailty, osteoporosis, and sarcopenia. Unraveling the underlying molecular mechanisms and developing effective treatments are crucial for improving the quality of life for those affected. In this context, accelerated aging models offer valuable insights into these conditions by displaying the hallmarks of human aging. Herein, this review focuses on relevant mouse models of musculoskeletal aging with particular emphasis on frailty, osteoporosis, and sarcopenia. Among the discussed models, PolgA mice in particular exhibit hallmarks of musculoskeletal aging, presenting early-onset frailty, as well as reduced bone and muscle mass that closely resemble human musculoskeletal aging. Ultimately, findings from these models hold promise for advancing interventions targeted at age-related musculoskeletal disorders, effectively addressing the challenges posed by musculoskeletal aging and associated conditions in humans.
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Affiliation(s)
- Dilara Yılmaz
- Institute for Biomechanics, ETH Zurich, Zurich, Switzerland
| | | | - Esther Wehrle
- Institute for Biomechanics, ETH Zurich, Zurich, Switzerland; AO Research Institute Davos, Davos Platz, Switzerland
| | - Gisela A Kuhn
- Institute for Biomechanics, ETH Zurich, Zurich, Switzerland
| | - Ralph Müller
- Institute for Biomechanics, ETH Zurich, Zurich, Switzerland.
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7
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Yousefzadeh MJ, Huerta Guevara AP, Postmus AC, Flores RR, Sano T, Jurdzinski A, Angelini L, McGowan SJ, O’Kelly RD, Wade EA, Gonzalez-Espada LV, Henessy-Wack D, Howard S, Rozgaja TA, Trussoni CE, LaRusso NF, Eggen BJ, Jonker JW, Robbins PD, Niedernhofer LJ, Kruit JK. Failure to repair endogenous DNA damage in β-cells causes adult-onset diabetes in mice. AGING BIOLOGY 2023; 1:20230015. [PMID: 38124711 PMCID: PMC10732477 DOI: 10.59368/agingbio.20230015] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2023]
Abstract
Age is the greatest risk factor for the development of type 2 diabetes mellitus (T2DM). Age-related decline in organ function is attributed to the accumulation of stochastic damage, including damage to the nuclear genome. Islets of T2DM patients display increased levels of DNA damage. However, whether this is a cause or consequence of the disease has not been elucidated. Here, we asked if spontaneous, endogenous DNA damage in β-cells can drive β-cell dysfunction and diabetes, via deletion of Ercc1, a key DNA repair gene, in β-cells. Mice harboring Ercc1-deficient β-cells developed adult-onset diabetes as demonstrated by increased random and fasted blood glucose levels, impaired glucose tolerance, and reduced insulin secretion. The inability to repair endogenous DNA damage led to an increase in oxidative DNA damage and apoptosis in β-cells and a significant loss of β-cell mass. Using electron microscopy, we identified β-cells in clear distress that showed an increased cell size, enlarged nuclear size, reduced number of mature insulin granules, and decreased number of mitochondria. Some β-cells were more affected than others consistent with the stochastic nature of spontaneous DNA damage. Ercc1-deficiency in β-cells also resulted in loss of β-cell function as glucose-stimulated insulin secretion and mitochondrial function were impaired in islets isolated from mice harboring Ercc1-deficient β-cells. These data reveal that unrepaired endogenous DNA damage is sufficient to drive β-cell dysfunction and provide a mechanism by which age increases the risk of T2DM.
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Affiliation(s)
- Matthew J. Yousefzadeh
- Department of Molecular Medicine and the Center on Aging, The Scripps Research Institute, 130 Scripps Way #3B3, Jupiter FL, 33458, USA
- Department of Biochemistry, Molecular Biology and Biophysics and Institute on the Biology of Aging and Metabolism, University of Minnesota, 6-155 Jackson Hall, 321 Church St., Minneapolis, MN 55455, USA
| | - Ana P. Huerta Guevara
- Department of Pediatrics, Section Molecular Metabolism and Nutrition, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Andrea C. Postmus
- Department of Pediatrics, Section Molecular Metabolism and Nutrition, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Rafael R. Flores
- Department of Molecular Medicine and the Center on Aging, The Scripps Research Institute, 130 Scripps Way #3B3, Jupiter FL, 33458, USA
- Department of Biochemistry, Molecular Biology and Biophysics and Institute on the Biology of Aging and Metabolism, University of Minnesota, 6-155 Jackson Hall, 321 Church St., Minneapolis, MN 55455, USA
| | - Tokio Sano
- Department of Molecular Medicine and the Center on Aging, The Scripps Research Institute, 130 Scripps Way #3B3, Jupiter FL, 33458, USA
| | - Angelika Jurdzinski
- Department of Pediatrics, Section Molecular Metabolism and Nutrition, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Luise Angelini
- Department of Molecular Medicine and the Center on Aging, The Scripps Research Institute, 130 Scripps Way #3B3, Jupiter FL, 33458, USA
- Department of Biochemistry, Molecular Biology and Biophysics and Institute on the Biology of Aging and Metabolism, University of Minnesota, 6-155 Jackson Hall, 321 Church St., Minneapolis, MN 55455, USA
| | - Sara J. McGowan
- Department of Molecular Medicine and the Center on Aging, The Scripps Research Institute, 130 Scripps Way #3B3, Jupiter FL, 33458, USA
- Department of Biochemistry, Molecular Biology and Biophysics and Institute on the Biology of Aging and Metabolism, University of Minnesota, 6-155 Jackson Hall, 321 Church St., Minneapolis, MN 55455, USA
| | - Ryan D. O’Kelly
- Department of Molecular Medicine and the Center on Aging, The Scripps Research Institute, 130 Scripps Way #3B3, Jupiter FL, 33458, USA
- Department of Biochemistry, Molecular Biology and Biophysics and Institute on the Biology of Aging and Metabolism, University of Minnesota, 6-155 Jackson Hall, 321 Church St., Minneapolis, MN 55455, USA
| | - Erin A. Wade
- Department of Molecular Medicine and the Center on Aging, The Scripps Research Institute, 130 Scripps Way #3B3, Jupiter FL, 33458, USA
| | - Lisa V. Gonzalez-Espada
- Department of Molecular Medicine and the Center on Aging, The Scripps Research Institute, 130 Scripps Way #3B3, Jupiter FL, 33458, USA
| | - Danielle Henessy-Wack
- Department of Molecular Medicine and the Center on Aging, The Scripps Research Institute, 130 Scripps Way #3B3, Jupiter FL, 33458, USA
| | - Shannon Howard
- Department of Molecular Medicine and the Center on Aging, The Scripps Research Institute, 130 Scripps Way #3B3, Jupiter FL, 33458, USA
| | - Tania A. Rozgaja
- Department of Molecular Medicine and the Center on Aging, The Scripps Research Institute, 130 Scripps Way #3B3, Jupiter FL, 33458, USA
| | - Christy E. Trussoni
- Division of Gastroenterology and Center for Cell Signaling in Gastroenterology, Mayo Clinic, Rochester, MN 55905, USA
| | - Nicholas F. LaRusso
- Division of Gastroenterology and Center for Cell Signaling in Gastroenterology, Mayo Clinic, Rochester, MN 55905, USA
| | - Bart J.L. Eggen
- Department of Biomedical Sciences of Cells and Systems, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Johan W. Jonker
- Department of Pediatrics, Section Molecular Metabolism and Nutrition, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Paul D. Robbins
- Department of Molecular Medicine and the Center on Aging, The Scripps Research Institute, 130 Scripps Way #3B3, Jupiter FL, 33458, USA
- Department of Biochemistry, Molecular Biology and Biophysics and Institute on the Biology of Aging and Metabolism, University of Minnesota, 6-155 Jackson Hall, 321 Church St., Minneapolis, MN 55455, USA
| | - Laura J. Niedernhofer
- Department of Molecular Medicine and the Center on Aging, The Scripps Research Institute, 130 Scripps Way #3B3, Jupiter FL, 33458, USA
- Department of Biochemistry, Molecular Biology and Biophysics and Institute on the Biology of Aging and Metabolism, University of Minnesota, 6-155 Jackson Hall, 321 Church St., Minneapolis, MN 55455, USA
| | - Janine K. Kruit
- Department of Pediatrics, Section Molecular Metabolism and Nutrition, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
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Amirazodi M, Daryanoosh F, Mehrabi A, Gaeini A, Koushkie Jahromi M, Salesi M, Zarifkar AH. Interactive Effects of Swimming High-Intensity Interval Training and Resveratrol Supplementation Improve Mitochondrial Protein Levels in the Hippocampus of Aged Rats. BIOMED RESEARCH INTERNATIONAL 2022; 2022:8638714. [PMID: 36536955 PMCID: PMC9759392 DOI: 10.1155/2022/8638714] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Revised: 11/20/2022] [Accepted: 11/24/2022] [Indexed: 11/26/2023]
Abstract
Mitochondrial dysfunction and increased oxidative stress cause damage to cells which can lead to the aging process and age-related diseases. Antioxidants such as resveratrol and high-intensity exercise can benefit oxidative damage prevention. This study is aimed at evaluating the effects of swimming high-intensity interval training and resveratrol on mitochondrial metabolism key proteins, SIRT5, SOD1, and PDH-E1α, and the level of NAD+ as a cofactor in the deacetylation process in aged rat hippocampus. Forty-five male Wistar rats, aged 20 months, were randomly divided into five groups: control (C), Swimming High-Intensity Interval Training (HIIT) (S-HIIT), Swimming HIIT with resveratrol supplementation (S-HIIT-R), resveratrol supplementation (R), and solvent of resveratrol supplementation (SR). S-HIIT and resveratrol groups performed the exercise and received resveratrol (10 mg/kg/day, gavage) for six weeks. Western blot analysis was performed to determine the protein level in the hippocampus. The amount of SIRT5 and SOD1 proteins in the hippocampus increased. S-HIIT with resveratrol or resveratrol alone increased the PDH-E1α level significantly. The amount of NAD+ was analyzed by assay kit that was reduced in S-HIIT, S-HIIT-R, and SR groups compared to controls. The results showed that resveratrol and S-HIIT attenuated the age-related brain changes by increasing the expression of SOD1 and SIRT5 and reducing the level of NAD+ in the hippocampus. Considering these findings, S-HIIT and resveratrol supplementation could be proposed as strategies to attenuate age-related brain changes. Resveratrol alone and exercise through the regulation of crucial proteins and cofactors can influence mitochondrial metabolism and oxidative stress in the hippocampus of aged rats.
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Affiliation(s)
- Maryam Amirazodi
- Department of Sport Sciences, Shiraz University, Shiraz, Iran
- Neuroscience Research Center, Institute of Neuropharmacology, Kerman University of Medical Sciences, Kerman, Iran
| | | | - Amin Mehrabi
- Neuroscience Research Center, Institute of Neuropharmacology, Kerman University of Medical Sciences, Kerman, Iran
- Department of Sport Science, Kish International Campus, University of Tehran, Kish, Iran
| | - Abbasali Gaeini
- Department of Exercise Physiology, Faculty of Physical Education, University of Tehran, Tehran, Iran
| | | | - Mohsen Salesi
- Department of Sport Sciences, Shiraz University, Shiraz, Iran
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9
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Chen HW, Liu MQ, Zhang GZ, Zhang CY, Wang ZH, Lin AX, Kang JH, Liu WZ, Guo XD, Wang YD, Kang XW. Proanthocyanidins inhibit the apoptosis and aging of nucleus pulposus cells through the PI3K/Akt pathway delaying intervertebral disc degeneration. Connect Tissue Res 2022; 63:650-662. [PMID: 35491814 DOI: 10.1080/03008207.2022.2063121] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/17/2021] [Accepted: 04/01/2022] [Indexed: 02/03/2023]
Abstract
BACKGROUND Low back pain is a common symptom of intervertebral disc degeneration (IDD), which seriously affects the quality of life of patients. The abnormal apoptosis and senescence of nucleus pulposus (NP) cells play important roles in the pathogenesis of IDD. Proanthocyanidins (PACs) are polyphenolic compounds with anti-apoptosis and anti-aging effects. However, their functions in NP cells are not yet clear. Therefore, this study was performed to explore the effects of PACs on NP cell apoptosis and aging and the underlying mechanisms of action. METHODS Cell viability was evaluated by cell counting kit-8 (CCK-8) assay. The apoptosis rate was determined TUNEL assays. Levels of apoptosis-associated molecules (Bcl-2, Bax, C-caspase-3 and Caspase-9) were evaluated via western blot. The senescence was observed through SA-β-gal staining and western blotting analysis was performed to observe the expression of senescence-related molecules (p-P53, P53, P21 and P16). RESULTS Pretreatment with PACs exhibited protective effects against IL-1β-induced NP cell apoptosis including apoptosis rate, expressions of proapoptosis and antiapoptosis related genes and protein. PACs could also alleviate the increase of p-p53, P21, and P16 in IL-1β-treated NP cells. SA-β-gal staining showed that IL-1β-induced senescence of NP cells was prevented by PACs pertreatment. In addition, PACs activated PI3K/Akt pathway in IL-1β-stimulated NP cells. However, these protected effects were inhibited after LY294002 treatment. CONCLUSION The results of the present study showed that PACs inhibit IL-1β-induced apoptosis and aging of NP cells by activating the PI3K/Akt pathway, and suggested that PACs have therapeutic potential for IDD.
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Affiliation(s)
- Hai-Wei Chen
- Department of Orthopedics, Lanzhou University Second Hospital, Lanzhou, Gansu, China
- The Second Clinical Medical College, Lanzhou University, Lanzhou, Gansu, China
| | - Ming-Qiang Liu
- Department of Orthopedics, Lanzhou University Second Hospital, Lanzhou, Gansu, China
- The Second Clinical Medical College, Lanzhou University, Lanzhou, Gansu, China
| | - Guang-Zhi Zhang
- Department of Orthopedics, Lanzhou University Second Hospital, Lanzhou, Gansu, China
- The Second Clinical Medical College, Lanzhou University, Lanzhou, Gansu, China
| | - Cang-Yu Zhang
- Department of Orthopedics, Lanzhou University Second Hospital, Lanzhou, Gansu, China
- The Second Clinical Medical College, Lanzhou University, Lanzhou, Gansu, China
| | - Zhao-Heng Wang
- Department of Orthopedics, Lanzhou University Second Hospital, Lanzhou, Gansu, China
- The Second Clinical Medical College, Lanzhou University, Lanzhou, Gansu, China
| | - Ai-Xin Lin
- Department of Orthopedics, Lanzhou University Second Hospital, Lanzhou, Gansu, China
- The Second Clinical Medical College, Lanzhou University, Lanzhou, Gansu, China
| | - Ji-He Kang
- Department of Orthopedics, Lanzhou University Second Hospital, Lanzhou, Gansu, China
- The Second Clinical Medical College, Lanzhou University, Lanzhou, Gansu, China
| | - Wen-Zhao Liu
- Department of Orthopedics, Lanzhou University Second Hospital, Lanzhou, Gansu, China
- The Second Clinical Medical College, Lanzhou University, Lanzhou, Gansu, China
| | - Xu-Dong Guo
- Department of Orthopedics, Lanzhou University Second Hospital, Lanzhou, Gansu, China
- The Second Clinical Medical College, Lanzhou University, Lanzhou, Gansu, China
| | - Yi-Dian Wang
- Department of Orthopedics, Lanzhou University Second Hospital, Lanzhou, Gansu, China
- The Second Clinical Medical College, Lanzhou University, Lanzhou, Gansu, China
| | - Xue-Wen Kang
- Department of Orthopedics, Lanzhou University Second Hospital, Lanzhou, Gansu, China
- The Second Clinical Medical College, Lanzhou University, Lanzhou, Gansu, China
- Key Laboratory of Orthopedics Disease of Gansu Province, Department of Orthopedics, Lanzhou University Second Hospital, Lanzhou, Gansu, China
- The International Cooperation Base of Gansu Province for the Pain Research in Spinal Disorders, Lanzhou, Gansu, China
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10
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Miller W, Pruett CLH, Stone W, Eide C, Riddle M, Popp C, Yousefzadeh M, Lees C, Seelig D, Thompson E, Orr H, Niedernhofer L, Tolar J. Accumulation of senescence observed in spinocerebellar ataxia type 7 mouse model. PLoS One 2022; 17:e0275580. [PMID: 36251631 PMCID: PMC9576077 DOI: 10.1371/journal.pone.0275580] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Accepted: 09/20/2022] [Indexed: 11/05/2022] Open
Abstract
Spinocerebellar ataxia type 7 (SCA7) is a neurodegenerative disease caused by a trinucleotide CAG repeat. SCA7 predominantly causes a loss of photoreceptors in the retina and Purkinje cells of the cerebellum. Severe infantile-onset SCA7 also causes renal and cardiac irregularities. Previous reports have shown that SCA7 results in increased susceptibility to DNA damage. Since DNA damage can lead to accumulation of senescent cells, we hypothesized that SCA7 causes an accumulation of senescent cells over the course of disease. A 140-CAG repeat SCA7 mouse model was evaluated for signs of disease-specific involvement in the kidney, heart, and cerebellum, tissues that are commonly affected in the infantile form. We found evidence of significant renal abnormality that coincided with an accumulation of senescent cells in the kidneys of SCA7140Q/5Q mice, based on histology findings in addition to RT-qPCR for the cell cycle inhibitors p16Ink4a and p21Cip1 and senescence-associated ß-galactosidase (SA-ßgal) staining, respectively. The Purkinje layer in the cerebellum of SCA7140Q/5Q mice also displayed SA-ßgal+ cells. These novel findings offer evidence that senescent cells accumulate in affected tissues and may possibly contribute to SCA7’s specific phenotype.
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Affiliation(s)
- William Miller
- Department of Pediatrics, Medical School, University of Minnesota, Minneapolis, MN, United States of America
| | | | - William Stone
- Department of Pediatrics, Medical School, University of Minnesota, Minneapolis, MN, United States of America
| | - Cindy Eide
- Department of Pediatrics, Medical School, University of Minnesota, Minneapolis, MN, United States of America
| | - Megan Riddle
- Department of Pediatrics, Medical School, University of Minnesota, Minneapolis, MN, United States of America
| | - Courtney Popp
- Department of Pediatrics, Medical School, University of Minnesota, Minneapolis, MN, United States of America
| | - Matthew Yousefzadeh
- Institute on the Biology of Aging and Metabolism, University of Minnesota, Minneapolis, MN, United States of America
- Department of Biochemistry, Molecular Biology and Biophysics, College of Biological Sciences, University of Minnesota, Minneapolis, MN, United States of America
| | - Christopher Lees
- Department of Pediatrics, Medical School, University of Minnesota, Minneapolis, MN, United States of America
| | - Davis Seelig
- Comparative Pathology Shared Resource, College of Veterinary Medicine, University of Minnesota, Minneapolis, MN, United States of America
| | - Elizabeth Thompson
- Institute on the Biology of Aging and Metabolism, University of Minnesota, Minneapolis, MN, United States of America
- Department of Biochemistry, Molecular Biology and Biophysics, College of Biological Sciences, University of Minnesota, Minneapolis, MN, United States of America
| | - Harry Orr
- Institute for Translational Neuroscience, University of Minnesota, Minneapolis, MN, United States of America
- Department of Laboratory Medicine and Pathology, Medical School, University of Minnesota, Minneapolis, MN, United States of America
| | - Laura Niedernhofer
- Institute on the Biology of Aging and Metabolism, University of Minnesota, Minneapolis, MN, United States of America
- Department of Biochemistry, Molecular Biology and Biophysics, College of Biological Sciences, University of Minnesota, Minneapolis, MN, United States of America
| | - Jakub Tolar
- Department of Pediatrics, Medical School, University of Minnesota, Minneapolis, MN, United States of America
- * E-mail:
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11
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Saul D, Kosinsky RL, Atkinson EJ, Doolittle ML, Zhang X, LeBrasseur NK, Pignolo RJ, Robbins PD, Niedernhofer LJ, Ikeno Y, Jurk D, Passos JF, Hickson LJ, Xue A, Monroe DG, Tchkonia T, Kirkland JL, Farr JN, Khosla S. A new gene set identifies senescent cells and predicts senescence-associated pathways across tissues. Nat Commun 2022; 13:4827. [PMID: 35974106 PMCID: PMC9381717 DOI: 10.1038/s41467-022-32552-1] [Citation(s) in RCA: 185] [Impact Index Per Article: 92.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Accepted: 08/05/2022] [Indexed: 02/01/2023] Open
Abstract
Although cellular senescence drives multiple age-related co-morbidities through the senescence-associated secretory phenotype, in vivo senescent cell identification remains challenging. Here, we generate a gene set (SenMayo) and validate its enrichment in bone biopsies from two aged human cohorts. We further demonstrate reductions in SenMayo in bone following genetic clearance of senescent cells in mice and in adipose tissue from humans following pharmacological senescent cell clearance. We next use SenMayo to identify senescent hematopoietic or mesenchymal cells at the single cell level from human and murine bone marrow/bone scRNA-seq data. Thus, SenMayo identifies senescent cells across tissues and species with high fidelity. Using this senescence panel, we are able to characterize senescent cells at the single cell level and identify key intercellular signaling pathways. SenMayo also represents a potentially clinically applicable panel for monitoring senescent cell burden with aging and other conditions as well as in studies of senolytic drugs.
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Affiliation(s)
- Dominik Saul
- Division of Endocrinology, Mayo Clinic, Rochester, MN, 55905, USA.
- Robert and Arlene Kogod Center on Aging, Mayo Clinic, Rochester, MN, 55905, USA.
- Department of Trauma, Orthopedics and Reconstructive Surgery, Georg-August-University of Goettingen, Goettingen, Germany.
| | - Robyn Laura Kosinsky
- Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, MN, 55905, USA
| | | | - Madison L Doolittle
- Division of Endocrinology, Mayo Clinic, Rochester, MN, 55905, USA
- Robert and Arlene Kogod Center on Aging, Mayo Clinic, Rochester, MN, 55905, USA
| | - Xu Zhang
- Robert and Arlene Kogod Center on Aging, Mayo Clinic, Rochester, MN, 55905, USA
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN, USA
| | - Nathan K LeBrasseur
- Robert and Arlene Kogod Center on Aging, Mayo Clinic, Rochester, MN, 55905, USA
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN, USA
| | - Robert J Pignolo
- Division of Endocrinology, Mayo Clinic, Rochester, MN, 55905, USA
- Robert and Arlene Kogod Center on Aging, Mayo Clinic, Rochester, MN, 55905, USA
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN, USA
| | - Paul D Robbins
- Institute on the Biology of Aging and Metabolism, Department of Biochemistry, Molecular Biology and Biophysics, University of Minnesota, Minneapolis, MN, USA
| | - Laura J Niedernhofer
- Institute on the Biology of Aging and Metabolism, Department of Biochemistry, Molecular Biology and Biophysics, University of Minnesota, Minneapolis, MN, USA
| | - Yuji Ikeno
- Department of Pathology, University of Texas Health, San Antonio, TX, USA
| | - Diana Jurk
- Robert and Arlene Kogod Center on Aging, Mayo Clinic, Rochester, MN, 55905, USA
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN, USA
| | - João F Passos
- Robert and Arlene Kogod Center on Aging, Mayo Clinic, Rochester, MN, 55905, USA
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN, USA
| | - LaTonya J Hickson
- Division of Nephrology and Hypertension, Mayo Clinic, Jacksonville, FL, USA
| | - Ailing Xue
- Robert and Arlene Kogod Center on Aging, Mayo Clinic, Rochester, MN, 55905, USA
| | - David G Monroe
- Division of Endocrinology, Mayo Clinic, Rochester, MN, 55905, USA
- Robert and Arlene Kogod Center on Aging, Mayo Clinic, Rochester, MN, 55905, USA
| | - Tamara Tchkonia
- Robert and Arlene Kogod Center on Aging, Mayo Clinic, Rochester, MN, 55905, USA
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN, USA
| | - James L Kirkland
- Robert and Arlene Kogod Center on Aging, Mayo Clinic, Rochester, MN, 55905, USA
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN, USA
| | - Joshua N Farr
- Division of Endocrinology, Mayo Clinic, Rochester, MN, 55905, USA.
- Robert and Arlene Kogod Center on Aging, Mayo Clinic, Rochester, MN, 55905, USA.
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN, USA.
| | - Sundeep Khosla
- Division of Endocrinology, Mayo Clinic, Rochester, MN, 55905, USA.
- Robert and Arlene Kogod Center on Aging, Mayo Clinic, Rochester, MN, 55905, USA.
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN, USA.
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12
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Zhang L, Pitcher LE, Yousefzadeh MJ, Niedernhofer LJ, Robbins PD, Zhu Y. Cellular senescence: a key therapeutic target in aging and diseases. J Clin Invest 2022; 132:e158450. [PMID: 35912854 PMCID: PMC9337830 DOI: 10.1172/jci158450] [Citation(s) in RCA: 122] [Impact Index Per Article: 61.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Cellular senescence is a hallmark of aging defined by stable exit from the cell cycle in response to cellular damage and stress. Senescent cells (SnCs) can develop a characteristic pathogenic senescence-associated secretory phenotype (SASP) that drives secondary senescence and disrupts tissue homeostasis, resulting in loss of tissue repair and regeneration. The use of transgenic mouse models in which SnCs can be genetically ablated has established a key role for SnCs in driving aging and age-related disease. Importantly, senotherapeutics have been developed to pharmacologically eliminate SnCs, termed senolytics, or suppress the SASP and other markers of senescence, termed senomorphics. Based on extensive preclinical studies as well as small clinical trials demonstrating the benefits of senotherapeutics, multiple clinical trials are under way. This Review discusses the role of SnCs in aging and age-related diseases, strategies to target SnCs, approaches to discover and develop senotherapeutics, and preclinical and clinical advances of senolytics.
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Affiliation(s)
- Lei Zhang
- Institute on the Biology of Aging and Metabolism and the Department of Biochemistry, Molecular Biology and Biophysics, University of Minnesota, Minneapolis, Minnesota, USA
| | - Louise E. Pitcher
- Institute on the Biology of Aging and Metabolism and the Department of Biochemistry, Molecular Biology and Biophysics, University of Minnesota, Minneapolis, Minnesota, USA
| | - Matthew J. Yousefzadeh
- Institute on the Biology of Aging and Metabolism and the Department of Biochemistry, Molecular Biology and Biophysics, University of Minnesota, Minneapolis, Minnesota, USA
| | - Laura J. Niedernhofer
- Institute on the Biology of Aging and Metabolism and the Department of Biochemistry, Molecular Biology and Biophysics, University of Minnesota, Minneapolis, Minnesota, USA
| | - Paul D. Robbins
- Institute on the Biology of Aging and Metabolism and the Department of Biochemistry, Molecular Biology and Biophysics, University of Minnesota, Minneapolis, Minnesota, USA
| | - Yi Zhu
- Robert and Arlene Kogod Center on Aging, and
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, Minnesota, USA
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13
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Klæstrup IH, Just MK, Holm KL, Alstrup AKO, Romero-Ramos M, Borghammer P, Van Den Berge N. Impact of aging on animal models of Parkinson's disease. Front Aging Neurosci 2022; 14:909273. [PMID: 35966779 PMCID: PMC9366194 DOI: 10.3389/fnagi.2022.909273] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Accepted: 06/28/2022] [Indexed: 11/23/2022] Open
Abstract
Aging is the biggest risk factor for developing Parkinson's disease (PD), the second most common neurodegenerative disorder. Several animal models have been developed to explore the pathophysiology underlying neurodegeneration and the initiation and spread of alpha-synuclein-related PD pathology, and to investigate biomarkers and therapeutic strategies. However, bench-to-bedside translation of preclinical findings remains suboptimal and successful disease-modifying treatments remain to be discovered. Despite aging being the main risk factor for developing idiopathic PD, most studies employ young animals in their experimental set-up, hereby ignoring age-related cellular and molecular mechanisms at play. Consequently, studies in young animals may not be an accurate reflection of human PD, limiting translational outcomes. Recently, it has been shown that aged animals in PD research demonstrate a higher susceptibility to developing pathology and neurodegeneration, and present with a more disseminated and accelerated disease course, compared to young animals. Here we review recent advances in the investigation of the role of aging in preclinical PD research, including challenges related to aged animal models that are limiting widespread use. Overall, current findings indicate that the use of aged animals may be required to account for age-related interactions in PD pathophysiology. Thus, although the use of older animals has disadvantages, a model that better represents clinical disease within the elderly would be more beneficial in the long run, as it will increase translational value and minimize the risk of therapies failing during clinical studies. Furthermore, we provide recommendations to manage the challenges related to aged animal models.
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Affiliation(s)
- Ida Hyllen Klæstrup
- Department of Biomedicine, Aarhus University, Aarhus, Denmark
- DANDRITE-Danish Research Institute of Translational Neuroscience, Nordic-EMBL Partnership for Molecular Medicine, Aarhus University, Aarhus, Denmark
| | - Mie Kristine Just
- Institute for Clinical Medicine, Aarhus University, Aarhus, Denmark
- Nuclear Medicine and PET, Aarhus University Hospital, Aarhus, Denmark
| | | | - Aage Kristian Olsen Alstrup
- Institute for Clinical Medicine, Aarhus University, Aarhus, Denmark
- Nuclear Medicine and PET, Aarhus University Hospital, Aarhus, Denmark
| | - Marina Romero-Ramos
- Department of Biomedicine, Aarhus University, Aarhus, Denmark
- DANDRITE-Danish Research Institute of Translational Neuroscience, Nordic-EMBL Partnership for Molecular Medicine, Aarhus University, Aarhus, Denmark
| | - Per Borghammer
- Institute for Clinical Medicine, Aarhus University, Aarhus, Denmark
- Nuclear Medicine and PET, Aarhus University Hospital, Aarhus, Denmark
| | - Nathalie Van Den Berge
- Institute for Clinical Medicine, Aarhus University, Aarhus, Denmark
- Nuclear Medicine and PET, Aarhus University Hospital, Aarhus, Denmark
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14
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In Vitro and In Vivo Modeling of Normal and Leukemic Bone Marrow Niches: Cellular Senescence Contribution to Leukemia Induction and Progression. Int J Mol Sci 2022; 23:ijms23137350. [PMID: 35806354 PMCID: PMC9266537 DOI: 10.3390/ijms23137350] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2022] [Revised: 06/25/2022] [Accepted: 06/27/2022] [Indexed: 12/16/2022] Open
Abstract
Cellular senescence is recognized as a dynamic process in which cells evolve and adapt in a context dependent manner; consequently, senescent cells can exert both beneficial and deleterious effects on their surroundings. Specifically, senescent mesenchymal stromal cells (MSC) in the bone marrow (BM) have been linked to the generation of a supporting microenvironment that enhances malignant cell survival. However, the study of MSC’s senescence role in leukemia development has been straitened not only by the availability of suitable models that faithfully reflect the structural complexity and biological diversity of the events triggered in the BM, but also by the lack of a universal, standardized method to measure senescence. Despite these constraints, two- and three dimensional in vitro models have been continuously improved in terms of cell culture techniques, support materials and analysis methods; in addition, research on animal models tends to focus on the development of techniques that allow tracking leukemic and senescent cells in the living organism, as well as to modify the available mice strains to generate individuals that mimic human BM characteristics. Here, we present the main advances in leukemic niche modeling, discussing advantages and limitations of the different systems, focusing on the contribution of senescent MSC to leukemia progression.
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15
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Tan H, Xu J, Liu Y. Ageing, cellular senescence and chronic kidney disease: experimental evidence. Curr Opin Nephrol Hypertens 2022; 31:235-243. [PMID: 35142744 PMCID: PMC9035037 DOI: 10.1097/mnh.0000000000000782] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
PURPOSE OF REVIEW Chronic kidney disease (CKD) is often viewed as an accelerated and premature ageing of the kidney, as they share common pathological features characterized by cellular senescence. In this review, we summarize the experimental evidence linking cellular senescence to the pathobiology of kidney ageing and CKD, and discuss the strategies for targeting senescent cells in developing therapeutics for ageing-related kidney disorders. RECENT FINDINGS Kidney ageing and CKD are featured with increased cellular senescence, an irreversible state of cell cycle arrest and the cessation of cell division. Senescent cells secrete a diverse array of proinflammatory and profibrotic factors known as senescence-associated secretory phenotype (SASP). Secondary senescence can be induced by primary senescent cells via a mechanism involving direct contact or the SASP. Various senolytic therapies aiming to selectively remove senescent cells in vivo have been developed. Senostatic approaches to suppress senescence or inhibit SASP, as well as nutrient signalling regulators are also validated in animal models of ageing. SUMMARY These recent studies provide experimental evidence supporting the notion that accumulation of senescent cells and their associated SASP is a main driver leading to structural and functional organ degeneration in CKD and other ageing-related disorder.
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Affiliation(s)
- Huishi Tan
- State Key Laboratory of Organ Failure Research, National Clinical Research Center of Kidney Disease, Division of Nephrology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Jie Xu
- State Key Laboratory of Organ Failure Research, National Clinical Research Center of Kidney Disease, Division of Nephrology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Youhua Liu
- State Key Laboratory of Organ Failure Research, National Clinical Research Center of Kidney Disease, Division of Nephrology, Nanfang Hospital, Southern Medical University, Guangzhou, China
- Department of Pathology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
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16
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Kudlova N, De Sanctis JB, Hajduch M. Cellular Senescence: Molecular Targets, Biomarkers, and Senolytic Drugs. Int J Mol Sci 2022; 23:ijms23084168. [PMID: 35456986 PMCID: PMC9028163 DOI: 10.3390/ijms23084168] [Citation(s) in RCA: 36] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Revised: 03/31/2022] [Accepted: 04/05/2022] [Indexed: 11/16/2022] Open
Abstract
Cellular senescence is defined as irreversible cell cycle arrest caused by various processes that render viable cells non-functional, hampering normal tissue homeostasis. It has many endogenous and exogenous inducers, and is closely connected with age, age-related pathologies, DNA damage, degenerative disorders, tumor suppression and activation, wound healing, and tissue repair. However, the literature is replete with contradictory findings concerning its triggering mechanisms, specific biomarkers, and detection protocols. This may be partly due to the wide range of cellular and in vivo animal or human models of accelerated aging that have been used to study senescence and test senolytic drugs. This review summarizes recent findings concerning senescence, presents some widely used cellular and animal senescence models, and briefly describes the best-known senolytic agents.
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Affiliation(s)
- Natalie Kudlova
- Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacky University, 77147 Olomouc, Czech Republic; (N.K.); (J.B.D.S.)
| | - Juan Bautista De Sanctis
- Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacky University, 77147 Olomouc, Czech Republic; (N.K.); (J.B.D.S.)
- Institute of Molecular and Translational Medicine Czech Advanced Technologies and Research Institute, Palacky University, 77147 Olomouc, Czech Republic
| | - Marian Hajduch
- Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacky University, 77147 Olomouc, Czech Republic; (N.K.); (J.B.D.S.)
- Institute of Molecular and Translational Medicine Czech Advanced Technologies and Research Institute, Palacky University, 77147 Olomouc, Czech Republic
- Correspondence: ; Tel.: +42-0-585632082
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17
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Dorigatti AO, Riordan R, Yu Z, Ross G, Wang R, Reynolds-Lallement N, Magnusson K, Galvan V, Perez VI. Brain cellular senescence in mouse models of Alzheimer's disease. GeroScience 2022; 44:1157-1168. [PMID: 35249206 PMCID: PMC9135905 DOI: 10.1007/s11357-022-00531-5] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2021] [Accepted: 02/16/2022] [Indexed: 01/05/2023] Open
Abstract
The accumulation of senescent cells contributes to aging pathologies, including neurodegenerative diseases, and its selective removal improves physiological and cognitive function in wild-type mice as well as in Alzheimer's disease (AD) models. AD models recapitulate some, but not all components of disease and do so at different rates. Whether brain cellular senescence is recapitulated in some or all AD models and whether the emergence of cellular senescence in AD mouse models occurs before or after the expected onset of AD-like cognitive deficits in these models are not yet known. The goal of this study was to identify mouse models of AD and AD-related dementias that develop measurable markers of cellular senescence in brain and thus may be useful to study the role of cellular senescence in these conditions. We measured the levels of cellular senescence markers in the brains of P301S(PS19), P301L, hTau, and 3xTg-AD mice that model amyloidopathy and/or tauopathy in AD and related dementias and in wild-type, age-matched control mice for each strain. Expression of cellular senescence markers in brains of transgenic P301L and 3xTg-AD mice was largely indistinguishable from that in WT control age-matched mice. In contrast, markers of cellular senescence were differentially increased in brains of transgenic hTau and P301S(PS19) mice as compared to WT control mice before the onset of AD-like cognitive deficits. Taken together, our data suggest that P301S(PS19) and hTau mice may be useful models for the study of brain cellular senescence in tauopathies including, but not limited to, AD.
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Affiliation(s)
- Angela O Dorigatti
- Department of Cellular and Integrative Physiology, University of Texas Health Science Center at San Antonio, San Antonio, TX, USA
- Barshop Institute for Longevity and Aging Studies, University of Texas Health Science Center at San Antonio, San Antonio, TX, USA
| | - Ruben Riordan
- Department of Biochemistry and Biophysics, Oregon State University, Corvallis, OR, USA
- Department of Biochemistry and Biophysics, Linus Pauling Institute, Oregon State University, 351 Linus Pauling Science Center, Corvallis, OR, 97331, USA
| | - Zhen Yu
- Department of Biochemistry and Biophysics, Oregon State University, Corvallis, OR, USA
- Department of Biochemistry and Biophysics, Linus Pauling Institute, Oregon State University, 351 Linus Pauling Science Center, Corvallis, OR, 97331, USA
| | - Grace Ross
- Department of Biochemistry and Biophysics, Oregon State University, Corvallis, OR, USA
- Department of Biochemistry and Biophysics, Linus Pauling Institute, Oregon State University, 351 Linus Pauling Science Center, Corvallis, OR, 97331, USA
| | - Rong Wang
- Department of Biochemistry and Biophysics, Oregon State University, Corvallis, OR, USA
- Department of Biochemistry and Biophysics, Linus Pauling Institute, Oregon State University, 351 Linus Pauling Science Center, Corvallis, OR, 97331, USA
| | - Nadjalisse Reynolds-Lallement
- Department of Biochemistry and Biophysics, Linus Pauling Institute, Oregon State University, 351 Linus Pauling Science Center, Corvallis, OR, 97331, USA
- Department of Biomedical Sciences, Carlson College of Veterinary Medicine, Oregon State University, Corvallis, USA
| | - Kathy Magnusson
- Department of Biochemistry and Biophysics, Linus Pauling Institute, Oregon State University, 351 Linus Pauling Science Center, Corvallis, OR, 97331, USA
- Department of Biomedical Sciences, Carlson College of Veterinary Medicine, Oregon State University, Corvallis, USA
| | - Veronica Galvan
- Department of Cellular and Integrative Physiology, University of Texas Health Science Center at San Antonio, San Antonio, TX, USA.
- Barshop Institute for Longevity and Aging Studies, University of Texas Health Science Center at San Antonio, San Antonio, TX, USA.
- South Texas Veterans Health Care System, San Antonio, TX, USA.
- Glenn Biggs Institute for Alzheimer's & Neurodegenerative Diseases, University of Texas Health Science Center at San Antonio, San Antonio, TX, USA.
- Department of Biochemistry and Molecular Biology, University of Oklahoma Health Sciences Center, 940 Stanton L. Young Blvd, BMSB 853, Oklahoma City, OK, 73104, USA.
- Center for Geroscience and Healthy Brain Aging, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA.
| | - Viviana I Perez
- Department of Biochemistry and Biophysics, Oregon State University, Corvallis, OR, USA.
- Department of Biochemistry and Biophysics, Linus Pauling Institute, Oregon State University, 351 Linus Pauling Science Center, Corvallis, OR, 97331, USA.
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18
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Yousefzadeh MJ, Flores RR, Zhu Y, Schmiechen ZC, Brooks RW, Trussoni CE, Cui Y, Angelini L, Lee KA, McGowan SJ, Burrack AL, Wang D, Dong Q, Lu A, Sano T, O'Kelly RD, McGuckian CA, Kato JI, Bank MP, Wade EA, Pillai SPS, Klug J, Ladiges WC, Burd CE, Lewis SE, LaRusso NF, Vo NV, Wang Y, Kelley EE, Huard J, Stromnes IM, Robbins PD, Niedernhofer LJ. An aged immune system drives senescence and ageing of solid organs. Nature 2021; 594:100-105. [PMID: 33981041 PMCID: PMC8684299 DOI: 10.1038/s41586-021-03547-7] [Citation(s) in RCA: 345] [Impact Index Per Article: 115.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2019] [Accepted: 04/13/2021] [Indexed: 11/09/2022]
Abstract
Ageing of the immune system, or immunosenescence, contributes to the morbidity and mortality of the elderly1,2. To define the contribution of immune system ageing to organism ageing, here we selectively deleted Ercc1, which encodes a crucial DNA repair protein3,4, in mouse haematopoietic cells to increase the burden of endogenous DNA damage and thereby senescence5-7 in the immune system only. We show that Vav-iCre+/-;Ercc1-/fl mice were healthy into adulthood, then displayed premature onset of immunosenescence characterized by attrition and senescence of specific immune cell populations and impaired immune function, similar to changes that occur during ageing in wild-type mice8-10. Notably, non-lymphoid organs also showed increased senescence and damage, which suggests that senescent, aged immune cells can promote systemic ageing. The transplantation of splenocytes from Vav-iCre+/-;Ercc1-/fl or aged wild-type mice into young mice induced senescence in trans, whereas the transplantation of young immune cells attenuated senescence. The treatment of Vav-iCre+/-;Ercc1-/fl mice with rapamycin reduced markers of senescence in immune cells and improved immune function11,12. These data demonstrate that an aged, senescent immune system has a causal role in driving systemic ageing and therefore represents a key therapeutic target to extend healthy ageing.
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Affiliation(s)
- Matthew J Yousefzadeh
- Institute on the Biology of Aging and Metabolism, University of Minnesota, Minneapolis, MN, USA
- Department of Biochemistry, Molecular Biology and Biophysics, University of Minnesota, Minneapolis, MN, USA
| | - Rafael R Flores
- Institute on the Biology of Aging and Metabolism, University of Minnesota, Minneapolis, MN, USA
- Department of Biochemistry, Molecular Biology and Biophysics, University of Minnesota, Minneapolis, MN, USA
| | - Yi Zhu
- Robert and Arlene Kogod Center on Aging, Mayo Clinic, Rochester, MN, USA
| | - Zoe C Schmiechen
- Center for Immunology, University of Minnesota Medical School, Minneapolis, MN, USA
| | - Robert W Brooks
- Department of Molecular Medicine, The Scripps Research Institute, Jupiter, FL, USA
| | - Christy E Trussoni
- Division of Gastroenterology, Center for Cell Signaling in Gastroenterology, Mayo Clinic, Rochester, MN, USA
| | - Yuxiang Cui
- Department of Chemistry, University of California Riverside, Riverside, CA, USA
| | - Luise Angelini
- Institute on the Biology of Aging and Metabolism, University of Minnesota, Minneapolis, MN, USA
- Department of Biochemistry, Molecular Biology and Biophysics, University of Minnesota, Minneapolis, MN, USA
| | - Kyoo-A Lee
- Institute on the Biology of Aging and Metabolism, University of Minnesota, Minneapolis, MN, USA
- Department of Biochemistry, Molecular Biology and Biophysics, University of Minnesota, Minneapolis, MN, USA
| | - Sara J McGowan
- Institute on the Biology of Aging and Metabolism, University of Minnesota, Minneapolis, MN, USA
- Department of Biochemistry, Molecular Biology and Biophysics, University of Minnesota, Minneapolis, MN, USA
| | - Adam L Burrack
- Center for Immunology, University of Minnesota Medical School, Minneapolis, MN, USA
| | - Dong Wang
- Department of Orthopaedic Surgery, University of Pittsburgh, Pittsburgh, PA, USA
| | - Qing Dong
- Department of Orthopaedic Surgery, University of Pittsburgh, Pittsburgh, PA, USA
| | - Aiping Lu
- Department of Orthopedic Surgery, McGovern Medical School, University of Texas Health Science Center at Houston, Houston, TX, USA
| | - Tokio Sano
- Department of Molecular Medicine, The Scripps Research Institute, Jupiter, FL, USA
| | - Ryan D O'Kelly
- Institute on the Biology of Aging and Metabolism, University of Minnesota, Minneapolis, MN, USA
- Department of Biochemistry, Molecular Biology and Biophysics, University of Minnesota, Minneapolis, MN, USA
| | - Collin A McGuckian
- Institute on the Biology of Aging and Metabolism, University of Minnesota, Minneapolis, MN, USA
- Department of Biochemistry, Molecular Biology and Biophysics, University of Minnesota, Minneapolis, MN, USA
| | - Jonathan I Kato
- Department of Molecular Medicine, The Scripps Research Institute, Jupiter, FL, USA
| | - Michael P Bank
- Department of Molecular Medicine, The Scripps Research Institute, Jupiter, FL, USA
| | - Erin A Wade
- Department of Molecular Medicine, The Scripps Research Institute, Jupiter, FL, USA
| | | | - Jenna Klug
- Department of Comparative Medicine, University of Washington, Seattle, WA, USA
| | - Warren C Ladiges
- Department of Comparative Medicine, University of Washington, Seattle, WA, USA
| | - Christin E Burd
- Departments of Molecular Genetics and Cancer Biology and Genetics, The Ohio State University, Columbus, OH, USA
| | - Sara E Lewis
- Department of Physiology & Pharmacology, West Virginia University, Morgantown, WV, USA
| | - Nicholas F LaRusso
- Division of Gastroenterology, Center for Cell Signaling in Gastroenterology, Mayo Clinic, Rochester, MN, USA
| | - Nam V Vo
- Department of Orthopaedic Surgery, University of Pittsburgh, Pittsburgh, PA, USA
| | - Yinsheng Wang
- Department of Chemistry, University of California Riverside, Riverside, CA, USA
| | - Eric E Kelley
- Department of Physiology & Pharmacology, West Virginia University, Morgantown, WV, USA
| | - Johnny Huard
- Department of Orthopedic Surgery, McGovern Medical School, University of Texas Health Science Center at Houston, Houston, TX, USA
| | - Ingunn M Stromnes
- Center for Immunology, University of Minnesota Medical School, Minneapolis, MN, USA
| | - Paul D Robbins
- Institute on the Biology of Aging and Metabolism, University of Minnesota, Minneapolis, MN, USA.
- Department of Biochemistry, Molecular Biology and Biophysics, University of Minnesota, Minneapolis, MN, USA.
| | - Laura J Niedernhofer
- Institute on the Biology of Aging and Metabolism, University of Minnesota, Minneapolis, MN, USA.
- Department of Biochemistry, Molecular Biology and Biophysics, University of Minnesota, Minneapolis, MN, USA.
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19
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Chen MS, Lee RT, Garbern JC. Senescence mechanisms and targets in the heart. Cardiovasc Res 2021; 118:1173-1187. [PMID: 33963378 DOI: 10.1093/cvr/cvab161] [Citation(s) in RCA: 86] [Impact Index Per Article: 28.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/22/2020] [Revised: 03/27/2021] [Accepted: 05/05/2021] [Indexed: 12/13/2022] Open
Abstract
Cellular senescence is a state of irreversible cell cycle arrest associated with ageing. Senescence of different cardiac cell types can direct the pathophysiology of cardiovascular diseases such as atherosclerosis, myocardial infarction, and cardiac fibrosis. While age-related telomere shortening represents a major cause of replicative senescence, the senescent state can also be induced by oxidative stress, metabolic dysfunction, and epigenetic regulation, among other stressors. It is critical that we understand the molecular pathways that lead to cellular senescence and the consequences of cellular senescence in order to develop new therapeutic approaches to treat cardiovascular disease. In this review, we discuss molecular mechanisms of cellular senescence, explore how cellular senescence of different cardiac cell types (including cardiomyocytes, cardiac endothelial cells, cardiac fibroblasts, vascular smooth muscle cells, valve interstitial cells) can lead to cardiovascular disease, and highlight potential therapeutic approaches that target molecular mechanisms of cellular senescence to prevent or treat cardiovascular disease.
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Affiliation(s)
- Maggie S Chen
- Department of Stem Cell and Regenerative Biology and the Harvard Stem Cell Institute, Harvard University, 7 Divinity Ave, Cambridge, MA 02138
| | - Richard T Lee
- Department of Stem Cell and Regenerative Biology and the Harvard Stem Cell Institute, Harvard University, 7 Divinity Ave, Cambridge, MA 02138.,Division of Cardiovascular Medicine, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, 75 Francis St, Boston, MA 02115
| | - Jessica C Garbern
- Department of Stem Cell and Regenerative Biology and the Harvard Stem Cell Institute, Harvard University, 7 Divinity Ave, Cambridge, MA 02138.,Department of Cardiology, Boston Children's Hospital, 300 Longwood Ave, Boston, MA 02115
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20
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Saccon TD, Nagpal R, Yadav H, Cavalcante MB, Nunes ADDC, Schneider A, Gesing A, Hughes B, Yousefzadeh M, Tchkonia T, Kirkland JL, Niedernhofer LJ, Robbins PD, Masternak MM. Senolytic combination of Dasatinib and Quercetin alleviates intestinal senescence and inflammation and modulates the gut microbiome in aged mice. J Gerontol A Biol Sci Med Sci 2021; 76:1895-1905. [PMID: 33406219 PMCID: PMC8514064 DOI: 10.1093/gerona/glab002] [Citation(s) in RCA: 114] [Impact Index Per Article: 38.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Indexed: 01/04/2023] Open
Abstract
Cellular senescence contributes to age-related disorders including physical dysfunction, disabilities and mortality caused by tissue inflammation and damage. Senescent cells accumulate in multiple tissues with aging and at etiological sites of multiple chronic disorders. The senolytic drug combination, Dasatinib plus Quercetin (D+Q), is known to reduce senescent cell abundance in aged mice. However, the effects of long-term D+Q treatment on intestinal senescent cell and inflammatory burden and microbiome composition in aged mice remain unknown. Here, we examine the effect of D+Q on senescence (p16 Ink4a and p21 Cip1) and inflammation (Cxcl1, Il1β, Il6, Mcp1, and Tnfα) markers in small (ileum) and large (caecum and colon) intestine in aged mice (n=10) compared to age-matched placebo-treated mice (n=10). Additionally, we examine microbial composition along the intestinal tract in these mice. D+Q-treated mice show significantly lower senescent cell (p16 and p21 expression) and inflammatory (Cxcl1, Il1β, Il6, Mcp1 and Tnfα expression) burden in small and large intestine compared with control mice. Further, we find specific microbial signatures in ileal, cecal, colonic and fecal regions that are distinctly modulated by D+Q, with modulation being most prominent in small intestine. Further analyses reveal specific correlation of senescence and inflammation markers with specific microbial signatures. Together, these data demonstrate that the senolytic treatment reduces intestinal senescence and inflammation while altering specific microbiota signatures and suggest that the optimized senolytic regimens might improve health via reducing intestinal senescence, inflammation and microbial dysbiosis in older subjects.
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Affiliation(s)
- Tatiana Dandolini Saccon
- Department of Nutrition, Federal University of Pelotas, Pelotas, RS, Brazil.,Burnet School of Biomedical Sciences, University of Central Florida, Orlando, FL, USA
| | - Ravinder Nagpal
- Division of Internal Medicine-Molecular Medicine, Wake Forest School of Medicine, Winston-Salem, NC, USA.,Department of Microbiology and Immunology, Wake Forest School of Medicine, Winston-Salem, NC, USA
| | - Hariom Yadav
- Division of Internal Medicine-Molecular Medicine, Wake Forest School of Medicine, Winston-Salem, NC, USA.,Department of Microbiology and Immunology, Wake Forest School of Medicine, Winston-Salem, NC, USA
| | - Marcelo Borges Cavalcante
- Burnet School of Biomedical Sciences, University of Central Florida, Orlando, FL, USA.,Department of Obstetrics and Gynecology, Fortaleza University, Fortaleza, CE, Brazil
| | | | - Augusto Schneider
- Department of Nutrition, Federal University of Pelotas, Pelotas, RS, Brazil
| | - Adam Gesing
- Department of Endocrinology of Ageing, Medical University of Lodz, 90-752 Lodz, Poland
| | - Brian Hughes
- Institute on the Biology of Aging and Metabolism, University of Minnesota, Minneapolis, MN, USA
| | - Matthew Yousefzadeh
- Institute on the Biology of Aging and Metabolism, University of Minnesota, Minneapolis, MN, USA
| | - Tamar Tchkonia
- Robert and Arlene Kogod Center on Aging, Mayo Clinic, Rochester, MN, USA
| | - James L Kirkland
- Robert and Arlene Kogod Center on Aging, Mayo Clinic, Rochester, MN, USA
| | - Laura J Niedernhofer
- Institute on the Biology of Aging and Metabolism, University of Minnesota, Minneapolis, MN, USA
| | - Paul D Robbins
- Institute on the Biology of Aging and Metabolism, University of Minnesota, Minneapolis, MN, USA
| | - Michal M Masternak
- Burnet School of Biomedical Sciences, University of Central Florida, Orlando, FL, USA.,Department of Head and Neck Surgery, Poznan University of Medical Sciences, Poznan, Poland
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21
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Tang N, Dong Y, Chen C, Zhao H. Anisodamine Maintains the Stability of Intervertebral Disc Tissue by Inhibiting the Senescence of Nucleus Pulposus Cells and Degradation of Extracellular Matrix via Interleukin-6/Janus Kinases/Signal Transducer and Activator of Transcription 3 Pathway. Front Pharmacol 2021; 11:519172. [PMID: 33384595 PMCID: PMC7769940 DOI: 10.3389/fphar.2020.519172] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2019] [Accepted: 11/16/2020] [Indexed: 12/28/2022] Open
Abstract
Objectives: Anisodamine (ANI) has been used to treat a variety of diseases. However, the study of ANI in intervertebral disc degeneration (IVDD) is unclear. This study investigated the effects of ANI on degenerative nucleus pulposus cells (NPCs) and IVDD rats, and its possible mechanisms. Methods: Human nucleus pulposus cells (HNPCs) were treated with IL-1β (20 ng/ml) to simulate IVDD, and an IVDD rat model was constructed. IL-1β-induced HNPCs were treated with different concentrations (10, 20, or 40 μM) of ANI, and IVDD rats were also treated with ANI (1 mg/kg). Results: ANI treatment significantly reduced the apoptosis, caspase-3 and SA-β-gal activities, and p53 and p21 proteins expression, while promoted telomerase activity and aggrecan and collagen II synthesis in IL-1β-induced HNPCs. Moreover, the introduction of ANI inhibited the expression of IL-6, phosphorylation of JAK and STAT3, and nuclear translocation of p-STAT3 in Degenerated HNPCs. Additionally, the application of ANI abolished the effects of IL-6 on apoptosis, SA-β-gal and telomerase activity, and the expression of p53, p21, aggrecan and collagen II proteins in degenerated HNPCs. Simultaneously, ANI treatment enhanced the effects of AG490 (inhibitor of JAK/STAT3 pathway) on IL-1β-induced apoptosis, senescence and ECM degradation in HNPCs. Furthermore, ANI treatment markedly inhibited the apoptosis and senescence in the nucleus pulposus of IVDD rats, while promoted the synthesis of aggrecan and collagen II. ANI treatment obviously inhibited JAK and STAT3 phosphorylation and inhibited nuclear translocation of p-STAT3 in IVDD rats. Conclusion: ANI inhibited the senescence and ECM degradation of NPCs by regulating the IL-6/JAK/STAT3 pathway to improve the function of NPCs in IVDD, which may provide new ideas for the treatment of IVDD.
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Affiliation(s)
- Ning Tang
- Department of Orthopedic, Chinese Academy of Medical Sciences Peking Union Medical College Hospital, Beijing, China
| | - Yulei Dong
- Department of Orthopedic, Chinese Academy of Medical Sciences Peking Union Medical College Hospital, Beijing, China
| | - Chong Chen
- Department of Orthopedic, Chinese Academy of Medical Sciences Peking Union Medical College Hospital, Beijing, China
| | - Hong Zhao
- Department of Orthopedic, Chinese Academy of Medical Sciences Peking Union Medical College Hospital, Beijing, China
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22
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Abstract
The ongoing pandemic severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) causes a disproportionate number of severe cases and deaths in older adults. Severe SARS-CoV-2-associated disease (coronavirus disease 2019 (COVID-19)) was declared a pandemic by the World Health Organization in March 2020 and is characterized by cytokine storm, acute respiratory distress syndrome, and in some cases by systemic inflammation-related pathology. Currently, our knowledge of the determinants of severe COVID-19 is primarily observational. Here, I review emerging evidence to argue that monocytes, a circulating innate immune cell, are principal players in cytokine storm and associated pathologies in COVID-19. I also describe changes in monocyte function and phenotype that are characteristic of both aging and severe COVID-19, which suggests a potential mechanism underlying increased morbidity and mortality due to SARS-CoV-2 infection in older adults. The innate immune system is therefore a potentially important target for therapeutic treatment of COVID-19, but experimental studies are needed, and SARS-CoV-2 presents unique challenges for pre-clinical and mechanistic studies in vivo. The immediate establishment of colonies of SARS-CoV-2-susceptible animal models for aging studies, as well as strong collaborative efforts in the geroscience community, will be required in order to develop the therapies needed to combat severe COVID-19 in older adult populations.
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Affiliation(s)
- Brandt D Pence
- School of Health Studies, University of Memphis, Memphis, TN, 38152, USA.
- Center for Nutraceutical and Dietary Supplement Research, University of Memphis, Memphis, TN, 38152, USA.
- University of Memphis, 304 Elma Roane Fieldhouse, 495 Zach H. Curlin St., Memphis, TN, 38152, USA.
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23
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Heterochronic parabiosis regulates the extent of cellular senescence in multiple tissues. GeroScience 2020; 42:951-961. [PMID: 32285290 DOI: 10.1007/s11357-020-00185-1] [Citation(s) in RCA: 44] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2020] [Accepted: 03/24/2020] [Indexed: 12/14/2022] Open
Abstract
An increase in the burden of senescent cells in tissues with age contributes to driving aging and the onset of age-related diseases. Genetic and pharmacologic elimination of senescent cells extends both health span and life span in mouse models. Heterochronic parabiosis in mice has been used to identify bloodborne, circulating pro- and anti-geronic factors able to drive or slow aging, respectively. However, whether factors in the circulation also regulate senescence is unknown. Here, we measured the expression of senescence and senescence-associated secretory phenotype (SASP) markers in multiple tissues from 4- to 18-month-old male mice that were either isochronically or heterochronically paired for 2 months. In heterochronic parabionts, the age-dependent increase in senescence and SASP marker expression was reduced in old mice exposed to a young environment, while senescence markers were concurrently increased in young heterochronic parabionts. These findings were supported by geropathology analysis using the Geropathology Grading Platform that showed a trend toward reduced hepatic lesions in old heterochronic parabionts. In summary, these results demonstrate that senescence is regulated in part by circulating geronic factors and suggest that one of the possible mediators of the rejuvenating effects with heterochronic parabiosis is through the reduction of the senescent cell burden.
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24
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Kaur A, Macip S, Stover CM. An Appraisal on the Value of Using Nutraceutical Based Senolytics and Senostatics in Aging. Front Cell Dev Biol 2020; 8:218. [PMID: 32309282 PMCID: PMC7145958 DOI: 10.3389/fcell.2020.00218] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2020] [Accepted: 03/13/2020] [Indexed: 01/10/2023] Open
Abstract
The average human life expectancy has increased globally, and continues to rise, owing to the substantive progress made in healthcare, medicine, sanitation, housing and education. This ultimately enriches society with a greater proportion of elderly people. Sustaining a healthy aged population is key to diminish the societal and economic impact of age-related infirmities. This is especially challenging because tissue function, and thus wellbeing, naturally progressively decline as humans age. With age increasing the risk of developing diseases, one of the therapeutic options is to interfere with the molecular and cellular pathways involved in age-related tissue dysfunction, which is in part caused by the accumulation of senescent cells. One strategy to prevent this could be using drugs that selectively kill these cells (senolytics). In parallel, some compounds have been identified that prevent or slow down the progression of senescence or some of its features (senostatics). Senolytic and senostatic therapies have been shown to be efficient in vivo, but they also have unwanted dose-dependent side effects, including toxicity. Important advances might be made using bioactive compounds from plants and foods (nutraceuticals) if, as is proposed, they offer similar effectiveness with fewer side effects. The focus of this review is on the use of nutraceuticals in interfering with cellular senescence.
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Affiliation(s)
- Amanpreet Kaur
- Department of Respiratory Sciences, University of Leicester, Leicester, United Kingdom
| | - Salvador Macip
- Mechanisms of Cancer and Ageing Laboratory, Department of Molecular and Cell Biology, University of Leicester, Leicester, United Kingdom.,Faculty of Health Sciences, Universitat Oberta de Catalunya, Barcelona, Spain
| | - Cordula M Stover
- Department of Respiratory Sciences, University of Leicester, Leicester, United Kingdom
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25
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Yousefzadeh MJ, Zhao J, Bukata C, Wade EA, McGowan SJ, Angelini LA, Bank MP, Gurkar AU, McGuckian CA, Calubag MF, Kato JI, Burd CE, Robbins PD, Niedernhofer LJ. Tissue specificity of senescent cell accumulation during physiologic and accelerated aging of mice. Aging Cell 2020; 19:e13094. [PMID: 31981461 PMCID: PMC7059165 DOI: 10.1111/acel.13094] [Citation(s) in RCA: 160] [Impact Index Per Article: 40.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2017] [Revised: 11/11/2019] [Accepted: 12/07/2019] [Indexed: 12/27/2022] Open
Abstract
Senescent cells accumulate with age in vertebrates and promote aging largely through their senescence‐associated secretory phenotype (SASP). Many types of stress induce senescence, including genotoxic stress. ERCC1‐XPF is a DNA repair endonuclease required for multiple DNA repair mechanisms that protect the nuclear genome. Humans or mice with reduced expression of this enzyme age rapidly due to increased levels of spontaneous, genotoxic stress. Here, we asked whether this corresponds to an increased level of senescent cells. p16Ink4a and p21Cip1 mRNA were increased ~15‐fold in peripheral lymphocytes from 4‐ to 5‐month‐old Ercc1−/∆ and 2.5‐year‐old wild‐type (WT) mice, suggesting that these animals exhibit a similar biological age. p16Ink4a and p21Cip1 mRNA were elevated in 10 of 13 tissues analyzed from 4‐ to 5‐month‐old Ercc1−/∆ mice, indicating where endogenous DNA damage drives senescence in vivo. Aged WT mice had similar increases of p16Ink4a and p21Cip1 mRNA in the same 10 tissues as the mutant mice. Senescence‐associated β–galactosidase activity and p21Cip1 protein also were increased in tissues of the progeroid and aged mice, while Lamin B1 mRNA and protein levels were diminished. In Ercc1−/Δ mice with a p16Ink4a luciferase reporter, bioluminescence rose steadily with age, particularly in lung, thymus, and pancreas. These data illustrate where senescence occurs with natural and accelerated aging in mice and the relative extent of senescence among tissues. Interestingly, senescence was greater in male mice until the end of life. The similarities between Ercc1−/∆ and aged WT mice support the conclusion that the DNA repair‐deficient mice accurately model the age‐related accumulation of senescent cells, albeit six‐times faster.
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Affiliation(s)
- Matthew J. Yousefzadeh
- Institute on the Biology of Aging and Metabolism University of Minnesota Minneapolis MN USA
- Department of Biochemistry, Molecular Biology and Biophysics University of Minnesota Minneapolis MN USA
- Department of Molecular Medicine Scripps Research Institute Jupiter FL USA
| | - Jing Zhao
- Department of Molecular Medicine Scripps Research Institute Jupiter FL USA
| | - Christina Bukata
- Department of Molecular Medicine Scripps Research Institute Jupiter FL USA
- Harriet L. Wilkes Honors CollegeFlorida Atlantic University Jupiter FL USA
| | - Erin A. Wade
- Department of Molecular Medicine Scripps Research Institute Jupiter FL USA
- Harriet L. Wilkes Honors CollegeFlorida Atlantic University Jupiter FL USA
| | - Sara J. McGowan
- Institute on the Biology of Aging and Metabolism University of Minnesota Minneapolis MN USA
- Department of Biochemistry, Molecular Biology and Biophysics University of Minnesota Minneapolis MN USA
- Department of Molecular Medicine Scripps Research Institute Jupiter FL USA
| | - Luise A. Angelini
- Institute on the Biology of Aging and Metabolism University of Minnesota Minneapolis MN USA
- Department of Biochemistry, Molecular Biology and Biophysics University of Minnesota Minneapolis MN USA
- Department of Molecular Medicine Scripps Research Institute Jupiter FL USA
| | - Michael P. Bank
- Department of Molecular Medicine Scripps Research Institute Jupiter FL USA
- Charles E. Schmidt College of Medicine Florida Atlantic University Boca Raton FL USA
| | - Aditi U. Gurkar
- Department of Molecular Medicine Scripps Research Institute Jupiter FL USA
- Department of Medicine University of Pittsburgh Pittsburgh PA USA
| | - Collin A. McGuckian
- Institute on the Biology of Aging and Metabolism University of Minnesota Minneapolis MN USA
- Department of Biochemistry, Molecular Biology and Biophysics University of Minnesota Minneapolis MN USA
- Department of Molecular Medicine Scripps Research Institute Jupiter FL USA
| | - Mariah F. Calubag
- Department of Molecular Medicine Scripps Research Institute Jupiter FL USA
- Harriet L. Wilkes Honors CollegeFlorida Atlantic University Jupiter FL USA
| | - Jonathan I. Kato
- Department of Molecular Medicine Scripps Research Institute Jupiter FL USA
- Harriet L. Wilkes Honors CollegeFlorida Atlantic University Jupiter FL USA
| | - Christin E. Burd
- Departments of Molecular Genetics and Cancer Biology and Genetics The Ohio State University Columbus OH USA
| | - Paul D. Robbins
- Institute on the Biology of Aging and Metabolism University of Minnesota Minneapolis MN USA
- Department of Biochemistry, Molecular Biology and Biophysics University of Minnesota Minneapolis MN USA
- Department of Molecular Medicine Scripps Research Institute Jupiter FL USA
| | - Laura J. Niedernhofer
- Institute on the Biology of Aging and Metabolism University of Minnesota Minneapolis MN USA
- Department of Biochemistry, Molecular Biology and Biophysics University of Minnesota Minneapolis MN USA
- Department of Molecular Medicine Scripps Research Institute Jupiter FL USA
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26
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Quantitative proteomics to study aging in rabbit liver. Mech Ageing Dev 2020; 187:111227. [PMID: 32126221 DOI: 10.1016/j.mad.2020.111227] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2019] [Revised: 01/24/2020] [Accepted: 02/27/2020] [Indexed: 12/23/2022]
Abstract
Aging globally effects cellular and organismal metabolism across a range of mammalian species, including humans and rabbits. Rabbits (Oryctolagus cuniculus are an attractive model system of aging due to their genetic similarity with humans and their short lifespans. This model can be used to understand metabolic changes in aging especially in major organs such as liver where we detected pronounced variations in fat metabolism, mitochondrial dysfunction, and protein degradation. Such changes in the liver are consistent across several mammalian species however in rabbits the downstream effects of these changes have not yet been explored. We have applied proteomics to study changes in the liver proteins from young, middle, and old age rabbits using a multiplexing cPILOT strategy. This resulted in the identification of 2,586 liver proteins, among which 45 proteins had significant p < 0.05) changes with aging. Seven proteins were differentially-expressed at all ages and include fatty acid binding protein, aldehyde dehydrogenase, enoyl-CoA hydratase, 3-hydroxyacyl CoA dehydrogenase, apolipoprotein C3, peroxisomal sarcosine oxidase, adhesion G-protein coupled receptor, and glutamate ionotropic receptor kinate. Insights to how alterations in metabolism affect protein expression in liver have been gained and demonstrate the utility of rabbit as a model of aging.
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