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Ferrucci L, Gonzalez‐Freire M, Fabbri E, Simonsick E, Tanaka T, Moore Z, Salimi S, Sierra F, de Cabo R. Measuring biological aging in humans: A quest. Aging Cell 2020; 19:e13080. [PMID: 31833194 PMCID: PMC6996955 DOI: 10.1111/acel.13080] [Citation(s) in RCA: 326] [Impact Index Per Article: 81.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2019] [Revised: 10/22/2019] [Accepted: 10/27/2019] [Indexed: 12/16/2022] Open
Abstract
The global population of individuals over the age of 65 is growing at an unprecedented rate and is expected to reach 1.6 billion by 2050. Most older individuals are affected by multiple chronic diseases, leading to complex drug treatments and increased risk of physical and cognitive disability. Improving or preserving the health and quality of life of these individuals is challenging due to a lack of well-established clinical guidelines. Physicians are often forced to engage in cycles of "trial and error" that are centered on palliative treatment of symptoms rather than the root cause, often resulting in dubious outcomes. Recently, geroscience challenged this view, proposing that the underlying biological mechanisms of aging are central to the global increase in susceptibility to disease and disability that occurs with aging. In fact, strong correlations have recently been revealed between health dimensions and phenotypes that are typical of aging, especially with autophagy, mitochondrial function, cellular senescence, and DNA methylation. Current research focuses on measuring the pace of aging to identify individuals who are "aging faster" to test and develop interventions that could prevent or delay the progression of multimorbidity and disability with aging. Understanding how the underlying biological mechanisms of aging connect to and impact longitudinal changes in health trajectories offers a unique opportunity to identify resilience mechanisms, their dynamic changes, and their impact on stress responses. Harnessing how to evoke and control resilience mechanisms in individuals with successful aging could lead to writing a new chapter in human medicine.
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Affiliation(s)
- Luigi Ferrucci
- Translational Gerontology BranchBiomedical Research CenterNational Institute on AgingNational Institutes of HealthBaltimoreMDUSA
| | - Marta Gonzalez‐Freire
- Translational Gerontology BranchBiomedical Research CenterNational Institute on AgingNational Institutes of HealthBaltimoreMDUSA
| | - Elisa Fabbri
- Translational Gerontology BranchBiomedical Research CenterNational Institute on AgingNational Institutes of HealthBaltimoreMDUSA
- Department of Medical and Surgical SciencesUniversity of BolognaBolognaItaly
| | - Eleanor Simonsick
- Translational Gerontology BranchBiomedical Research CenterNational Institute on AgingNational Institutes of HealthBaltimoreMDUSA
| | - Toshiko Tanaka
- Translational Gerontology BranchBiomedical Research CenterNational Institute on AgingNational Institutes of HealthBaltimoreMDUSA
| | - Zenobia Moore
- Translational Gerontology BranchBiomedical Research CenterNational Institute on AgingNational Institutes of HealthBaltimoreMDUSA
| | - Shabnam Salimi
- Department of Epidemiology and Public HealthUniversity of Maryland School of MedicineBaltimoreMDUSA
| | - Felipe Sierra
- Division of Aging BiologyNational Institute on AgingNIHBethesdaMDUSA
| | - Rafael de Cabo
- Translational Gerontology BranchBiomedical Research CenterNational Institute on AgingNational Institutes of HealthBaltimoreMDUSA
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202
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Tissue-infiltrating macrophages mediate an exosome-based metabolic reprogramming upon DNA damage. Nat Commun 2020; 11:42. [PMID: 31896748 PMCID: PMC6940362 DOI: 10.1038/s41467-019-13894-9] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2018] [Accepted: 12/04/2019] [Indexed: 12/26/2022] Open
Abstract
DNA damage and metabolic disorders are intimately linked with premature disease onset but the underlying mechanisms remain poorly understood. Here, we show that persistent DNA damage accumulation in tissue-infiltrating macrophages carrying an ERCC1-XPF DNA repair defect (Er1F/−) triggers Golgi dispersal, dilation of endoplasmic reticulum, autophagy and exosome biogenesis leading to the secretion of extracellular vesicles (EVs) in vivo and ex vivo. Macrophage-derived EVs accumulate in Er1F/− animal sera and are secreted in macrophage media after DNA damage. The Er1F/− EV cargo is taken up by recipient cells leading to an increase in insulin-independent glucose transporter levels, enhanced cellular glucose uptake, higher cellular oxygen consumption rate and greater tolerance to glucose challenge in mice. We find that high glucose in EV-targeted cells triggers pro-inflammatory stimuli via mTOR activation. This, in turn, establishes chronic inflammation and tissue pathology in mice with important ramifications for DNA repair-deficient, progeroid syndromes and aging. DNA damage is associated with metabolic disorders, but the mechanism in unclear. Here, the authors show that persistent DNA damage induced by lack of the endonuclease XPF-ERCC1 triggers extracellular vesicle biogenesis in tissue infiltrating macrophages, and that vesicle uptake stimulates glucose uptake in recipient cells, leading to increased inflammation.
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203
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Kang X, Li C, Xie X, Zhan KB, Yang SQ, Tang YY, Zou W, Zhang P, Tang XQ. Hydrogen Sulfide Inhibits Homocysteine-Induced Neuronal Senescence by Up-Regulation of SIRT1. Int J Med Sci 2020; 17:310-319. [PMID: 32132865 PMCID: PMC7053352 DOI: 10.7150/ijms.38602] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/21/2019] [Accepted: 12/08/2019] [Indexed: 12/22/2022] Open
Abstract
Homocysteine (Hcy) accelerates neuronal senescence and induces age-related neurodegenerative diseases. Silence signal regulating factor 1 (SIRT1) prolongs lifespan and takes neuroprotective effects. We have previously demonstrated that hydrogen sulfide (H2S) prevents Hcy-induced apoptosis of neuronal cells and has neuroprotective effect. In the present work, we aimed to investigate whether H2S protects HT22 cells against Hcy-induced neuronal senescence and whether SIRT1 mediates this role of H2S. We found that Hcy induced cellular senescence in HT22 cells, as determined by β-galactosidase staining, expressions of P16INK4a, P21CIPL, and trypan blue Staining, which are the markers of cellular senescence. However, sodium hydrosulfide (NaHS, the donor of H2S) significantly reversed Hcy-induced cellular senescence. Interestingly, NaHS not only up-regulated the expression of SIRT1 in HT22 cells but also reversed Hcy-downregulated the expression of SIRT1 in HT22 cells. Furthermore, we found that pretreatment with Sirtinol (an inhibitor of SIRT1) markedly reversed the protection of NaHS against Hcy-induced HT22 cells senescence and apoptosis. Our findings illustrated that H2S protects HT22 cells against Hcy-induced senescence by up-regulating SIRT1.
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Affiliation(s)
- Xuan Kang
- Institute of Neurology, the First Affiliated Hospital, University of South China, Hengyang, 42100, Hunan, P.R. China.,Institute of Neuroscience, Hengyang Medical College, University of South China, Hengyang, 42100, Hunan, P.R. China
| | - Cheng Li
- Institute of Neuroscience, Hengyang Medical College, University of South China, Hengyang, 42100, Hunan, P.R. China.,Department of Emergency, Affiliated Nanhua Hospital, University of South China, Hengyang, 421001, Hunan, P. R. China
| | - Xi Xie
- Institute of Neuroscience, Hengyang Medical College, University of South China, Hengyang, 42100, Hunan, P.R. China.,Department of Neurology, the Second Affiliated Hospital, University of South China, Hengyang, 421001, Hunan, P.R. China
| | - Ke-Bin Zhan
- Institute of Neuroscience, Hengyang Medical College, University of South China, Hengyang, 42100, Hunan, P.R. China.,Department of Neurology, the Second Affiliated Hospital, University of South China, Hengyang, 421001, Hunan, P.R. China
| | - San-Qiao Yang
- Institute of Neurology, the First Affiliated Hospital, University of South China, Hengyang, 42100, Hunan, P.R. China.,Institute of Neuroscience, Hengyang Medical College, University of South China, Hengyang, 42100, Hunan, P.R. China
| | - Yi-Yun Tang
- Institute of Neuroscience, Hengyang Medical College, University of South China, Hengyang, 42100, Hunan, P.R. China
| | - Wei Zou
- Institute of Neuroscience, Hengyang Medical College, University of South China, Hengyang, 42100, Hunan, P.R. China.,Department of Neurology, Affiliated Nanhua Hospital, University of South China, Hengyang, 421001, Hunan, P. R. China
| | - Ping Zhang
- Institute of Neuroscience, Hengyang Medical College, University of South China, Hengyang, 42100, Hunan, P.R. China.,Department of Neurology, Affiliated Nanhua Hospital, University of South China, Hengyang, 421001, Hunan, P. R. China
| | - Xiao-Qing Tang
- Institute of Neurology, the First Affiliated Hospital, University of South China, Hengyang, 42100, Hunan, P.R. China.,Institute of Neuroscience, Hengyang Medical College, University of South China, Hengyang, 42100, Hunan, P.R. China
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204
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205
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Schmeer C, Kretz A, Wengerodt D, Stojiljkovic M, Witte OW. Dissecting Aging and Senescence-Current Concepts and Open Lessons. Cells 2019; 8:cells8111446. [PMID: 31731770 PMCID: PMC6912776 DOI: 10.3390/cells8111446] [Citation(s) in RCA: 82] [Impact Index Per Article: 16.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2019] [Revised: 11/12/2019] [Accepted: 11/13/2019] [Indexed: 01/10/2023] Open
Abstract
In contrast to the programmed nature of development, it is still a matter of debate whether aging is an adaptive and regulated process, or merely a consequence arising from a stochastic accumulation of harmful events that culminate in a global state of reduced fitness, risk for disease acquisition, and death. Similarly unanswered are the questions of whether aging is reversible and can be turned into rejuvenation as well as how aging is distinguishable from and influenced by cellular senescence. With the discovery of beneficial aspects of cellular senescence and evidence of senescence being not limited to replicative cellular states, a redefinition of our comprehension of aging and senescence appears scientifically overdue. Here, we provide a factor-based comparison of current knowledge on aging and senescence, which we converge on four suggested concepts, thereby implementing the newly emerging cellular and molecular aspects of geroconversion and amitosenescence, and the signatures of a genetic state termed genosenium. We also address the possibility of an aging-associated secretory phenotype in analogy to the well-characterized senescence-associated secretory phenotype and delineate the impact of epigenetic regulation in aging and senescence. Future advances will elucidate the biological and molecular fingerprints intrinsic to either process.
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Affiliation(s)
- Christian Schmeer
- Hans-Berger Department of Neurology, Jena University Hospital, 07747 Jena, Thuringia, Germany; (A.K.); (D.W.); (M.S.); (O.W.W.)
- Jena Center for Healthy Ageing, Jena University Hospital, 07747 Jena, Thuringia, Germany
- Correspondence:
| | - Alexandra Kretz
- Hans-Berger Department of Neurology, Jena University Hospital, 07747 Jena, Thuringia, Germany; (A.K.); (D.W.); (M.S.); (O.W.W.)
- Jena Center for Healthy Ageing, Jena University Hospital, 07747 Jena, Thuringia, Germany
| | - Diane Wengerodt
- Hans-Berger Department of Neurology, Jena University Hospital, 07747 Jena, Thuringia, Germany; (A.K.); (D.W.); (M.S.); (O.W.W.)
| | - Milan Stojiljkovic
- Hans-Berger Department of Neurology, Jena University Hospital, 07747 Jena, Thuringia, Germany; (A.K.); (D.W.); (M.S.); (O.W.W.)
- Jena Center for Healthy Ageing, Jena University Hospital, 07747 Jena, Thuringia, Germany
| | - Otto W. Witte
- Hans-Berger Department of Neurology, Jena University Hospital, 07747 Jena, Thuringia, Germany; (A.K.); (D.W.); (M.S.); (O.W.W.)
- Jena Center for Healthy Ageing, Jena University Hospital, 07747 Jena, Thuringia, Germany
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206
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Klaas M, Mäemets-Allas K, Lõhmussaar K, Tooming M, Viil J, Jaks V. Endogenous beta-galactosidase activity marks a TREM2-expressing Kupffer cell population in injured livers of Lgr5-LacZ and wild-type mice. FEBS Lett 2019; 594:958-970. [PMID: 31705801 DOI: 10.1002/1873-3468.13669] [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: 06/05/2019] [Revised: 10/04/2019] [Accepted: 11/02/2019] [Indexed: 11/08/2022]
Abstract
Lgr5-LacZ mice harbor the Escherichia coli LacZ gene encoding β-galactosidase (β-gal) under the control of the Lgr5 promoter, a stem/progenitor cell marker. In injured livers of Lgr5-LacZ mice, cells expressing β-galactosidase (β-gal) are considered as potential bipotent liver progenitors; however, their origin and identity remain unknown. Unexpectedly, using lineage tracing, we demonstrate that the β-gal+ cells do not originate from liver parenchymal cells. Instead, β-gal+ cells, isolated from injured livers of both Lgr5-LacZ and wild-type mice, are positive for markers of Kupffer cells, liver-resident macrophages. The β-gal expression in these cells is a result of elevated expression of the endogenous beta-galactosidase Glb1. In injured livers of Lgr5-LacZ mice, bacterial β-gal expression is very low, suggesting transgene silencing. The gene expression profile of the β-gal+ Kupffer cells from injured livers suggests a role in liver regeneration.
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Affiliation(s)
- Mariliis Klaas
- Institute of Molecular and Cell Biology, University of Tartu, Estonia
| | | | - Kadi Lõhmussaar
- Institute of Molecular and Cell Biology, University of Tartu, Estonia.,Hubrecht Institute, Royal Netherlands Academy of Arts and Sciences (KNAW), University Medical Centre Utrecht, The Netherlands
| | - Mikk Tooming
- Institute of Molecular and Cell Biology, University of Tartu, Estonia
| | - Janeli Viil
- Institute of Molecular and Cell Biology, University of Tartu, Estonia
| | - Viljar Jaks
- Institute of Molecular and Cell Biology, University of Tartu, Estonia.,Tartu University Clinic, Dermatology Clinic, Tartu, Estonia
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207
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Targeting normal and cancer senescent cells as a strategy of senotherapy. Ageing Res Rev 2019; 55:100941. [PMID: 31408714 DOI: 10.1016/j.arr.2019.100941] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2019] [Revised: 07/04/2019] [Accepted: 08/06/2019] [Indexed: 12/19/2022]
Abstract
Senotherapy is an antiageing strategy. It refers to selective killing of senescent cells by senolytic agents, strengthening the activity of immune cells that eliminate senescent cells or alleviating the secretory phenotype (SASP) of senescent cells. As senescent cells accumulate with age and are considered to be at the root of age-related disorders, senotherapy seems to be very promising in improving healthspan. Genetic approaches, which allowed to selectively induce death of senescent cells in transgenic mice, provided proof-of-concept evidence that elimination of senescent cells can be a therapeutic approach for treating many age-related diseases. Translating these results into humans is based on searching for synthetic and natural compounds, which are able to exert such beneficial effects. The major challenge in the field is to show efficacy, safety and tolerability of senotherapy in humans. The question is how these therapeutics can influence senescence of non-dividing post-mitotic cells. Another issue concerns senescence of cancer cells induced during therapy as there is a risk of resumption of senescent cell division that could terminate in cancer renewal. Thus, development of an effective senotherapeutic strategy is also an urgent issue in cancer treatment. Different aspects, both beneficial and potentially detrimental, will be discussed in this review.
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208
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da Silva Santos AC, Moura DMN, Dos Santos TAR, de Melo Neto OP, Pereira VRA. Assessment of Leishmania cell lines expressing high levels of beta-galactosidase as alternative tools for the evaluation of anti-leishmanial drug activity. J Microbiol Methods 2019; 166:105732. [PMID: 31629910 DOI: 10.1016/j.mimet.2019.105732] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2019] [Revised: 09/23/2019] [Accepted: 09/28/2019] [Indexed: 11/28/2022]
Abstract
Leishmaniasis, caused by protozoa belonging to the genus Leishmania, is an important public health problem found in >90 countries and with still limited options for treatment. Development of new anti-leishmanial drugs is an urgent need and the identification of new active compounds is a limiting factor that can be accelerated through large scale drug screening. This requires multiple steps and can be expensive and time consuming. Here, we propose an alternative approach for the colorimetric assessment of anti-Leishmania drug activity that can be easily scaled up. L. amazonensis and L. infantum cell lines were generated having the β-galactosidase (β-gal) gene integrated into their chromosomal 18S rRNA (ssu) locus. Both cell lines expressed high levels of β-gal and had their growth easily monitored and quantified colorimetrically. These two cell lines were then evaluated as tools to assess drug susceptibility and their use was validated through in vitro assays with Amphotericin B, which is routinely used against leishmaniasis. β-gal expression was also confirmed through flow-cytometry, another method of phenotypic detection. With these recombinant parasites, an alternative in vitro model of drug screening against cutaneous and visceral leishmaniasis is now available.
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Affiliation(s)
| | - Danielle M N Moura
- Departamento de Imunologia, Instituto Aggeu Magalhães- FIOCRUZ, Recife, Pernambuco, Brazil
| | - Thiago A R Dos Santos
- Departamento de Imunologia, Instituto Aggeu Magalhães- FIOCRUZ, Recife, Pernambuco, Brazil
| | - Osvaldo P de Melo Neto
- Departamento de Microbiologia, Instituto Aggeu Magalhães- FIOCRUZ, Recife, Pernambuco, Brazil
| | - Valéria R A Pereira
- Departamento de Imunologia, Instituto Aggeu Magalhães- FIOCRUZ, Recife, Pernambuco, Brazil
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209
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Rhinn M, Ritschka B, Keyes WM. Cellular senescence in development, regeneration and disease. Development 2019; 146:146/20/dev151837. [DOI: 10.1242/dev.151837] [Citation(s) in RCA: 108] [Impact Index Per Article: 21.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
ABSTRACT
Cellular senescence is a state comprising an essentially irreversible proliferative arrest combined with phenotypic changes and pronounced secretory activity. Although senescence has long been linked with aging, recent studies have uncovered functional roles for senescence in embryonic development, regeneration and reprogramming, and have helped to advance our understanding of this process as a highly coordinated and programmed cellular state. In this Primer article, we summarize some of the key findings in the field and attempt to explain them in a simple model that reconciles the normal and pathological roles for senescence. We discuss how a primary role of cellular senescence is to contribute to normal development, cell plasticity and tissue repair, as a dynamic and tightly regulated cellular program. However, when this process is perturbed, the beneficial effects turn detrimental and can contribute to disease and aging.
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Affiliation(s)
- Muriel Rhinn
- Department of Development and Stem Cells, Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), 1 Rue Laurent Fries, 67404, Illkirch, France
- Centre National de la Recherche Scientifique (CNRS), Illkirch, France UMR7104
- Institut National de la Santé et de la Recherche Médicale (INSERM), Illkirch, France U1258
- Université de Strasbourg, Illkirch, France
| | - Birgit Ritschka
- Department of Development and Stem Cells, Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), 1 Rue Laurent Fries, 67404, Illkirch, France
- Centre National de la Recherche Scientifique (CNRS), Illkirch, France UMR7104
- Institut National de la Santé et de la Recherche Médicale (INSERM), Illkirch, France U1258
- Université de Strasbourg, Illkirch, France
| | - William M. Keyes
- Department of Development and Stem Cells, Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), 1 Rue Laurent Fries, 67404, Illkirch, France
- Centre National de la Recherche Scientifique (CNRS), Illkirch, France UMR7104
- Institut National de la Santé et de la Recherche Médicale (INSERM), Illkirch, France U1258
- Université de Strasbourg, Illkirch, France
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210
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Hickson LJ, Langhi Prata LGP, Bobart SA, Evans TK, Giorgadze N, Hashmi SK, Herrmann SM, Jensen MD, Jia Q, Jordan KL, Kellogg TA, Khosla S, Koerber DM, Lagnado AB, Lawson DK, LeBrasseur NK, Lerman LO, McDonald KM, McKenzie TJ, Passos JF, Pignolo RJ, Pirtskhalava T, Saadiq IM, Schaefer KK, Textor SC, Victorelli SG, Volkman TL, Xue A, Wentworth MA, Wissler Gerdes EO, Zhu Y, Tchkonia T, Kirkland JL. Senolytics decrease senescent cells in humans: Preliminary report from a clinical trial of Dasatinib plus Quercetin in individuals with diabetic kidney disease. EBioMedicine 2019; 47:446-456. [PMID: 31542391 PMCID: PMC6796530 DOI: 10.1016/j.ebiom.2019.08.069] [Citation(s) in RCA: 682] [Impact Index Per Article: 136.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Revised: 08/16/2019] [Accepted: 08/29/2019] [Indexed: 01/01/2023] Open
Abstract
Background Senescent cells, which can release factors that cause inflammation and dysfunction, the senescence-associated secretory phenotype (SASP), accumulate with ageing and at etiological sites in multiple chronic diseases. Senolytics, including the combination of Dasatinib and Quercetin (D + Q), selectively eliminate senescent cells by transiently disabling pro-survival networks that defend them against their own apoptotic environment. In the first clinical trial of senolytics, D + Q improved physical function in patients with idiopathic pulmonary fibrosis (IPF), a fatal senescence-associated disease, but to date, no peer-reviewed study has directly demonstrated that senolytics decrease senescent cells in humans. Methods In an open label Phase 1 pilot study, we administered 3 days of oral D 100 mg and Q 1000 mg to subjects with diabetic kidney disease (N = 9; 68·7 ± 3·1 years old; 2 female; BMI:33·9 ± 2·3 kg/m2; eGFR:27·0 ± 2·1 mL/min/1·73m2). Adipose tissue, skin biopsies, and blood were collected before and 11 days after completing senolytic treatment. Senescent cell and macrophage/Langerhans cell markers and circulating SASP factors were assayed. Findings D + Q reduced adipose tissue senescent cell burden within 11 days, with decreases in p16INK4A-and p21CIP1-expressing cells, cells with senescence-associated β-galactosidase activity, and adipocyte progenitors with limited replicative potential. Adipose tissue macrophages, which are attracted, anchored, and activated by senescent cells, and crown-like structures were decreased. Skin epidermal p16INK4A+ and p21CIP1+ cells were reduced, as were circulating SASP factors, including IL-1α, IL-6, and MMPs-9 and −12. Interpretation “Hit-and-run” treatment with senolytics, which in the case of D + Q have elimination half-lives <11 h, significantly decreases senescent cell burden in humans. Fund NIH and Foundations. ClinicalTrials.gov Identifier: NCT02848131. Senescence, Frailty, and Mesenchymal Stem Cell Functionality in Chronic Kidney Disease: Effect of Senolytic Agents.
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Affiliation(s)
- LaTonya J Hickson
- Cellular Senescence and Translation and Pharmacology Programs, Robert and Arlene Kogod Center on Aging, Mayo Clinic, United States of America; Division of Geriatric Medicine and Gerontology, Department of Medicine, Mayo Clinic, United States of America; Division of Nephrology and Hypertension, Department of Medicine, Mayo Clinic, United States of America
| | - Larissa G P Langhi Prata
- Cellular Senescence and Translation and Pharmacology Programs, Robert and Arlene Kogod Center on Aging, Mayo Clinic, United States of America
| | - Shane A Bobart
- Division of Nephrology and Hypertension, Department of Medicine, Mayo Clinic, United States of America
| | - Tamara K Evans
- Cellular Senescence and Translation and Pharmacology Programs, Robert and Arlene Kogod Center on Aging, Mayo Clinic, United States of America; Department of Medicine Clinical Trials Unit, Department of Medicine, Mayo Clinic, United States of America
| | - Nino Giorgadze
- Cellular Senescence and Translation and Pharmacology Programs, Robert and Arlene Kogod Center on Aging, Mayo Clinic, United States of America
| | - Shahrukh K Hashmi
- Cellular Senescence and Translation and Pharmacology Programs, Robert and Arlene Kogod Center on Aging, Mayo Clinic, United States of America; Division of Hematology, Department of Medicine, Mayo Clinic, United States of America
| | - Sandra M Herrmann
- Division of Nephrology and Hypertension, Department of Medicine, Mayo Clinic, United States of America
| | - Michael D Jensen
- Division of Endocrinology, Department of Medicine, Mayo Clinic, United States of America
| | - Qingyi Jia
- Division of Endocrinology, Department of Medicine, Mayo Clinic, United States of America
| | - Kyra L Jordan
- Division of Nephrology and Hypertension, Department of Medicine, Mayo Clinic, United States of America
| | - Todd A Kellogg
- Department of Surgery, Mayo Clinic, United States of America
| | - Sundeep Khosla
- Cellular Senescence and Translation and Pharmacology Programs, Robert and Arlene Kogod Center on Aging, Mayo Clinic, United States of America; Division of Endocrinology, Department of Medicine, Mayo Clinic, United States of America
| | - Daniel M Koerber
- Cellular Senescence and Translation and Pharmacology Programs, Robert and Arlene Kogod Center on Aging, Mayo Clinic, United States of America
| | - Anthony B Lagnado
- Cellular Senescence and Translation and Pharmacology Programs, Robert and Arlene Kogod Center on Aging, Mayo Clinic, United States of America; Department of Physiology and Biomedical Engineering, Mayo Clinic, United States of America
| | - Donna K Lawson
- Division of Hospital Medicine, Department of Medicine, Mayo Clinic, United States of America
| | - Nathan K LeBrasseur
- Cellular Senescence and Translation and Pharmacology Programs, Robert and Arlene Kogod Center on Aging, Mayo Clinic, United States of America; Department of Physiology, Mayo Clinic, United States of America; Department of Physical Medicine and Rehabilitation, Mayo Clinic, United States of America
| | - Lilach O Lerman
- Division of Nephrology and Hypertension, Department of Medicine, Mayo Clinic, United States of America
| | - Kathleen M McDonald
- Cellular Senescence and Translation and Pharmacology Programs, Robert and Arlene Kogod Center on Aging, Mayo Clinic, United States of America; Office of Research Regulatory Support, Mayo Clinic, United States of America
| | | | - João F Passos
- Cellular Senescence and Translation and Pharmacology Programs, Robert and Arlene Kogod Center on Aging, Mayo Clinic, United States of America; Department of Physiology and Biomedical Engineering, Mayo Clinic, United States of America
| | - Robert J Pignolo
- Cellular Senescence and Translation and Pharmacology Programs, Robert and Arlene Kogod Center on Aging, Mayo Clinic, United States of America; Division of Geriatric Medicine and Gerontology, Department of Medicine, Mayo Clinic, United States of America; Division of Endocrinology, Department of Medicine, Mayo Clinic, United States of America; Division of Hospital Medicine, Department of Medicine, Mayo Clinic, United States of America; Department of Physiology, Mayo Clinic, United States of America
| | - Tamar Pirtskhalava
- Cellular Senescence and Translation and Pharmacology Programs, Robert and Arlene Kogod Center on Aging, Mayo Clinic, United States of America
| | - Ishran M Saadiq
- Division of Nephrology and Hypertension, Department of Medicine, Mayo Clinic, United States of America
| | - Kalli K Schaefer
- Cellular Senescence and Translation and Pharmacology Programs, Robert and Arlene Kogod Center on Aging, Mayo Clinic, United States of America
| | - Stephen C Textor
- Division of Nephrology and Hypertension, Department of Medicine, Mayo Clinic, United States of America
| | - Stella G Victorelli
- Cellular Senescence and Translation and Pharmacology Programs, Robert and Arlene Kogod Center on Aging, Mayo Clinic, United States of America; Department of Physiology and Biomedical Engineering, Mayo Clinic, United States of America
| | - Tammie L Volkman
- Cellular Senescence and Translation and Pharmacology Programs, Robert and Arlene Kogod Center on Aging, Mayo Clinic, United States of America; Department of Medicine Clinical Trials Unit, Department of Medicine, Mayo Clinic, United States of America
| | - Ailing Xue
- Cellular Senescence and Translation and Pharmacology Programs, Robert and Arlene Kogod Center on Aging, Mayo Clinic, United States of America
| | - Mark A Wentworth
- Cellular Senescence and Translation and Pharmacology Programs, Robert and Arlene Kogod Center on Aging, Mayo Clinic, United States of America; Office of Research Regulatory Support, Mayo Clinic, United States of America
| | - Erin O Wissler Gerdes
- Cellular Senescence and Translation and Pharmacology Programs, Robert and Arlene Kogod Center on Aging, Mayo Clinic, United States of America; Department of Medicine Clinical Trials Unit, Department of Medicine, Mayo Clinic, United States of America
| | - Yi Zhu
- Cellular Senescence and Translation and Pharmacology Programs, Robert and Arlene Kogod Center on Aging, Mayo Clinic, United States of America
| | - Tamara Tchkonia
- Cellular Senescence and Translation and Pharmacology Programs, Robert and Arlene Kogod Center on Aging, Mayo Clinic, United States of America.
| | - James L Kirkland
- Cellular Senescence and Translation and Pharmacology Programs, Robert and Arlene Kogod Center on Aging, Mayo Clinic, United States of America; Division of Geriatric Medicine and Gerontology, Department of Medicine, Mayo Clinic, United States of America; Division of Hospital Medicine, Department of Medicine, Mayo Clinic, United States of America; Division of General Internal Medicine, Department of Medicine, Mayo Clinic, United States of America.
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211
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Yousefzadeh MJ, Melos KI, Angelini L, Burd CE, Robbins PD, Niedernhofer LJ. Mouse Models of Accelerated Cellular Senescence. Methods Mol Biol 2019; 1896:203-230. [PMID: 30474850 DOI: 10.1007/978-1-4939-8931-7_17] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Senescent cells accumulate in multiple tissues as virtually all vertebrate organisms age. Senescence is a highly conserved response to many forms of cellular stress intended to block the propagation of damaged cells. Senescent cells have been demonstrated to play a causal role in aging via their senescence-associated secretory phenotype and by impeding tissue regeneration. Depletion of senescent cells either through genetic or pharmacologic methods has been demonstrated to extend murine lifespan and delay the onset of age-related diseases. Measuring the burden and location of senescent cells in vivo remains challenging, as there is no marker unique to senescent cells. Here, we describe multiple methods to detect the presence and extent of cellular senescence in preclinical models, with a special emphasis on murine models of accelerated aging that exhibit a more rapid onset of cellular senescence.
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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, The Scripps Research Institute, Jupiter, FL, USA
| | - Kendra I Melos
- Department of Molecular Medicine, The Scripps Research Institute, Jupiter, FL, 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
- Department of Molecular Medicine, The Scripps Research Institute, Jupiter, FL, USA
| | - Christin E Burd
- Department of Molecular Genetics, The Ohio State University, Columbus, OH, USA
- Department of 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, The Scripps Research Institute, Jupiter, FL, USA
| | - Laura J Niedernhofer
- Institute on the Biology of Aging and Metabolism, University of Minnesota, Minneapolis, MN, USA.
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212
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Palacio L, Goyer M, Maggiorani D, Espinosa A, Villeneuve N, Bourbonnais S, Moquin‐Beaudry G, Le O, Demaria M, Davalos AR, Decaluwe H, Beauséjour C. Restored immune cell functions upon clearance of senescence in the irradiated splenic environment. Aging Cell 2019; 18:e12971. [PMID: 31148373 PMCID: PMC6612633 DOI: 10.1111/acel.12971] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2018] [Revised: 04/16/2019] [Accepted: 05/06/2019] [Indexed: 01/01/2023] Open
Abstract
Some studies show eliminating senescent cells rejuvenate aged mice and attenuate deleterious effects of chemotherapy. Nevertheless, it remains unclear whether senescence affects immune cell function. We provide evidence that exposure of mice to ionizing radiation (IR) promotes the senescent‐associated secretory phenotype (SASP) and expression of p16INK4a in splenic cell populations. We observe splenic T cells exhibit a reduced proliferative response when cultured with allogenic cells in vitro and following viral infection in vivo. Using p16‐3MR mice that allow elimination of p16INK4a‐positive cells with exposure to ganciclovir, we show that impaired T‐cell proliferation is partially reversed, mechanistically dependent on p16INK4a expression and the SASP. Moreover, we found macrophages isolated from irradiated spleens to have a reduced phagocytosis activity in vitro, a defect also restored by the elimination of p16INK4a expression. Our results provide molecular insight on how senescence‐inducing IR promotes loss of immune cell fitness, which suggest senolytic drugs may improve immune cell function in aged and patients undergoing cancer treatment.
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Affiliation(s)
- Lina Palacio
- Centre de recherche du CHU Ste‐Justine Montreal Quebec Canada
- Département de pharmacologie et physiologie, Faculté de Médecine Université de Montréal Montreal Quebec Canada
| | - Marie‐Lyn Goyer
- Centre de recherche du CHU Ste‐Justine Montreal Quebec Canada
- Département de pharmacologie et physiologie, Faculté de Médecine Université de Montréal Montreal Quebec Canada
| | - Damien Maggiorani
- Centre de recherche du CHU Ste‐Justine Montreal Quebec Canada
- Département de pharmacologie et physiologie, Faculté de Médecine Université de Montréal Montreal Quebec Canada
| | - Andrea Espinosa
- Centre de recherche du CHU Ste‐Justine Montreal Quebec Canada
| | | | | | - Gaël Moquin‐Beaudry
- Centre de recherche du CHU Ste‐Justine Montreal Quebec Canada
- Département de pharmacologie et physiologie, Faculté de Médecine Université de Montréal Montreal Quebec Canada
| | - Oanh Le
- Centre de recherche du CHU Ste‐Justine Montreal Quebec Canada
| | - Marco Demaria
- European Research Institute for the Biology of Aging (ERIBA), University Medical Center Groningen (UMCG) University of Groningen Groningen The Netherlands
| | | | - Hélène Decaluwe
- Centre de recherche du CHU Ste‐Justine Montreal Quebec Canada
- Département de Pédiatrie, Faculté de Médecine Université de Montréal Montreal Quebec Canada
| | - Christian Beauséjour
- Centre de recherche du CHU Ste‐Justine Montreal Quebec Canada
- Département de pharmacologie et physiologie, Faculté de Médecine Université de Montréal Montreal Quebec Canada
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213
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Ogrodnik M, Salmonowicz H, Jurk D, Passos JF. Expansion and Cell-Cycle Arrest: Common Denominators of Cellular Senescence. Trends Biochem Sci 2019; 44:996-1008. [PMID: 31345557 DOI: 10.1016/j.tibs.2019.06.011] [Citation(s) in RCA: 51] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2019] [Revised: 06/24/2019] [Accepted: 06/26/2019] [Indexed: 12/21/2022]
Abstract
Cellular senescence is a major driver of age-related diseases, and senotherapies are being tested in clinical trials. Despite its popularity, cellular senescence is weakly defined and is frequently referred to as irreversible cell-cycle arrest. In this article we hypothesize that cellular senescence is a phenotype that results from the coordination of two processes: cell expansion and cell-cycle arrest. We provide evidence for the compatibility of the proposed model with recent findings showing senescence in postmitotic tissues, wound healing, obesity, and development. We believe our model also explains why some characteristics of senescence can be found in non-senescent cells. Finally, we propose new avenues for research from our model.
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Affiliation(s)
- Mikolaj Ogrodnik
- Department of Physiology and Biochemical Engineering, Mayo Clinic, Rochester, MN, USA.
| | - Hanna Salmonowicz
- Institute for Cell and Molecular Biosciences, Newcastle University, Newcastle upon Tyne, UK
| | - Diana Jurk
- Department of Physiology and Biochemical Engineering, Mayo Clinic, Rochester, MN, USA; Institute for Cell and Molecular Biosciences, Newcastle University, Newcastle upon Tyne, UK
| | - João F Passos
- Department of Physiology and Biochemical Engineering, Mayo Clinic, Rochester, MN, USA; Institute for Cell and Molecular Biosciences, Newcastle University, Newcastle upon Tyne, UK.
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214
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Prieto LI, Baker DJ. Cellular Senescence and the Immune System in Cancer. Gerontology 2019; 65:505-512. [PMID: 31212284 DOI: 10.1159/000500683] [Citation(s) in RCA: 56] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2018] [Accepted: 05/01/2019] [Indexed: 12/21/2022] Open
Abstract
In response to a variety of cancer-inducing stresses, cells may engage a stable cell cycle arrest mechanism, termed cellular senescence, to suppress the proliferation of preneoplastic cells. Despite this cell intrinsic tumor suppression, senescent cells have also been implicated as active contributors to tumorigenesis by extrinsically promoting many hallmarks of cancer, including evasion of the immune system. Here, we discuss these dual, and seemingly contradictory, roles of senescence during tumorigenesis. Furthermore, we highlight findings of how senescent cells can influence the immune system and discuss the possibility that immune cells themselves may be acquiring senescence-associated alterations. Lastly, we discuss how senescent cell avoidance or clearance may impact pathology.
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Affiliation(s)
- Luis I Prieto
- Department of Biochemistry and Molecular Biology, Mayo Clinic, Rochester, Minnesota, USA
| | - Darren J Baker
- Department of Biochemistry and Molecular Biology, Mayo Clinic, Rochester, Minnesota, USA, .,Department of Pediatric and Adolescent Medicine, Mayo Clinic, Rochester, Minnesota, USA,
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215
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Santelli A, Sun IO, Eirin A, Abumoawad AM, Woollard JR, Lerman A, Textor S, Puranik AS, Lerman LO. Senescent Kidney Cells in Hypertensive Patients Release Urinary Extracellular Vesicles. J Am Heart Assoc 2019; 8:e012584. [PMID: 31433703 PMCID: PMC6585370 DOI: 10.1161/jaha.119.012584] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/14/2019] [Accepted: 05/03/2019] [Indexed: 12/13/2022]
Abstract
Background Hypertension may be associated with renal cellular injury. Cells in distress release extracellular vesicles (EVs), and their numbers in urine may reflect renal injury. Cellular senescence, an irreversible growth arrest in response to a noxious milieu, is characterized by release of proinflammatory cytokines. We hypothesized that EVs released by senescent nephron cells can be identified in urine of patients with hypertension. Methods and Results We recruited patients with essential hypertension (EH) or renovascular hypertension and healthy volunteers (n=14 each). Renal oxygenation was assessed using magnetic resonance imaging and blood samples collected from both renal veins for cytokine-level measurements. EVs isolated from urine samples were characterized by imaging flow cytometry based on specific markers, including p16 (senescence marker), calyxin (podocytes), urate transporter 1 (proximal tubules), uromodulin (ascending limb of Henle's loop), and prominin-2 (distal tubules). Overall percentage of urinary p16+ EVs was elevated in EH and renovascular hypertension patients compared with healthy volunteers and correlated inversely with renal function and directly with renal vein cytokine levels. Urinary levels of p16+/urate transporter 1+ were elevated in all hypertensive subjects compared with healthy volunteers, whereas p16+/prominin-2+ levels were elevated only in EH versus healthy volunteers and p16+/uromodulin+ in renovascular hypertension versus EH. Conclusions Levels of p16+ EVs are elevated in urine of hypertensive patients and may reflect increased proximal tubular cellular senescence. In EH, EVs originate also from distal tubules and in renovascular hypertension from Henle's loop. Hence, urinary EVs levels may be useful to identify intrarenal sites of cellular senescence.
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Affiliation(s)
- Adrian Santelli
- Division of Nephrology and HypertensionMayo ClinicRochesterMN
- Department of PhysiopathologyHospital de ClinicasMontevideoUruguay
| | - In O. Sun
- Division of Nephrology and HypertensionMayo ClinicRochesterMN
| | - Alfonso Eirin
- Division of Nephrology and HypertensionMayo ClinicRochesterMN
| | | | | | - Amir Lerman
- Department of Cardiovascular DiseasesMayo ClinicRochesterMN
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216
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Kim S, Shan P, Hwangbo C, Zhang Y, Min J, Zhang X, Ardito T, Li A, Peng T, Sauler M, Lee PJ. Endothelial toll-like receptor 4 maintains lung integrity via epigenetic suppression of p16 INK4a. Aging Cell 2019; 18:e12914. [PMID: 30790400 PMCID: PMC6516428 DOI: 10.1111/acel.12914] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2017] [Revised: 12/16/2018] [Accepted: 01/06/2019] [Indexed: 02/05/2023] Open
Abstract
We previously reported that the canonical innate immune receptor toll-like receptor 4 (TLR4) is critical in maintaining lung integrity. However, the molecular mechanisms via which TLR4 mediates its effect remained unclear. In the present study, we identified distinct contributions of lung endothelial cells (Ec) and epithelial cells TLR4 to pulmonary homeostasis using genetic-specific, lung- and cell-targeted in vivo methods. Emphysema was significantly prevented via the reconstituting of human TLR4 expression in the lung Ec of TLR4-/- mice. Lung Ec-silencing of TLR4 in wild-type mice induced emphysema, highlighting the specific and distinct role of Ec-expressed TLR4 in maintaining lung integrity. We also identified a previously unrecognized role of TLR4 in preventing expression of p16INK4a , a senescence-associated gene. Lung Ec-p16INK4a -silencing prevented TLR4-/- induced emphysema, revealing a new functional role for p16INK4a in lungs. TLR4 suppressed endogenous p16INK4a expression via HDAC2-mediated deacetylation of histone H4. These findings suggest a novel role for TLR4 in maintaining of lung homeostasis via epigenetic regulation of senescence-related gene expression.
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Affiliation(s)
- So‐Jin Kim
- Pulmonary, Critical Care and Sleep Medicine, Department of Internal MedicineYale University School of MedicineNew HavenConnecticut
| | - Peiying Shan
- Pulmonary, Critical Care and Sleep Medicine, Department of Internal MedicineYale University School of MedicineNew HavenConnecticut
| | - Cheol Hwangbo
- Division of Applied Life Science (BK21 Plus), PMBBRC, Division of Life Science, College of National SciencesGyeongsang National UniversityJinjuKorea
| | - Yi Zhang
- Pulmonary, Critical Care and Sleep Medicine, Department of Internal MedicineYale University School of MedicineNew HavenConnecticut
| | - Jin‐Na Min
- Pulmonary, Critical Care and Sleep Medicine, Department of Internal MedicineYale University School of MedicineNew HavenConnecticut
| | - Xuchen Zhang
- Department of PathologyYale University School of MedicineNew HavenConnecticut
| | - Taylor Ardito
- Pulmonary, Critical Care and Sleep Medicine, Department of Internal MedicineYale University School of MedicineNew HavenConnecticut
| | - Alfred Li
- Bone Imaging Research CoreUniversity of California, San Francisco (UCSF)San FranciscoCalifornia
| | - Tien Peng
- Department of Medicine, Cardiovascular Research InstituteUCSFSan FranciscoCalifornia
| | - Maor Sauler
- Pulmonary, Critical Care and Sleep Medicine, Department of Internal MedicineYale University School of MedicineNew HavenConnecticut
| | - Patty J. Lee
- Pulmonary, Critical Care and Sleep Medicine, Department of Internal MedicineYale University School of MedicineNew HavenConnecticut
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217
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Palmer AK, Xu M, Zhu Y, Pirtskhalava T, Weivoda MM, Hachfeld CM, Prata LG, van Dijk TH, Verkade E, Casaclang‐Verzosa G, Johnson KO, Cubro H, Doornebal EJ, Ogrodnik M, Jurk D, Jensen MD, Chini EN, Miller JD, Matveyenko A, Stout MB, Schafer MJ, White TA, Hickson LJ, Demaria M, Garovic V, Grande J, Arriaga EA, Kuipers F, von Zglinicki T, LeBrasseur NK, Campisi J, Tchkonia T, Kirkland JL. Targeting senescent cells alleviates obesity-induced metabolic dysfunction. Aging Cell 2019; 18:e12950. [PMID: 30907060 PMCID: PMC6516193 DOI: 10.1111/acel.12950] [Citation(s) in RCA: 373] [Impact Index Per Article: 74.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2019] [Revised: 02/16/2019] [Accepted: 03/03/2019] [Indexed: 12/18/2022] Open
Abstract
Adipose tissue inflammation and dysfunction are associated with obesity-related insulin resistance and diabetes, but mechanisms underlying this relationship are unclear. Although senescent cells accumulate in adipose tissue of obese humans and rodents, a direct pathogenic role for these cells in the development of diabetes remains to be demonstrated. Here, we show that reducing senescent cell burden in obese mice, either by activating drug-inducible "suicide" genes driven by the p16Ink4a promoter or by treatment with senolytic agents, alleviates metabolic and adipose tissue dysfunction. These senolytic interventions improved glucose tolerance, enhanced insulin sensitivity, lowered circulating inflammatory mediators, and promoted adipogenesis in obese mice. Elimination of senescent cells also prevented the migration of transplanted monocytes into intra-abdominal adipose tissue and reduced the number of macrophages in this tissue. In addition, microalbuminuria, renal podocyte function, and cardiac diastolic function improved with senolytic therapy. Our results implicate cellular senescence as a causal factor in obesity-related inflammation and metabolic derangements and show that emerging senolytic agents hold promise for treating obesity-related metabolic dysfunction and its complications.
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218
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Trias E, Beilby PR, Kovacs M, Ibarburu S, Varela V, Barreto-Núñez R, Bradford SC, Beckman JS, Barbeito L. Emergence of Microglia Bearing Senescence Markers During Paralysis Progression in a Rat Model of Inherited ALS. Front Aging Neurosci 2019; 11:42. [PMID: 30873018 PMCID: PMC6403180 DOI: 10.3389/fnagi.2019.00042] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2018] [Accepted: 02/13/2019] [Indexed: 12/12/2022] Open
Abstract
Age is a recognized risk factor for amyotrophic lateral sclerosis (ALS), a paralytic disease characterized by progressive loss of motor neurons and neuroinflammation. A hallmark of aging is the accumulation of senescent cells. Yet, the pathogenic role of cellular senescence in ALS remains poorly understood. In rats bearing the ALS-linked SOD1G93A mutation, microgliosis contribute to motor neuron death, and its pharmacologic downregulation results in increased survival. Here, we have explored whether gliosis and motor neuron loss were associated with cellular senescence in the spinal cord during paralysis progression. In the lumbar spinal cord of symptomatic SOD1G93A rats, numerous cells displayed nuclear p16INK4a as well as loss of nuclear Lamin B1 expression, two recognized senescence-associated markers. The number of p16INK4a-positive nuclei increased by four-fold while Lamin B1-negative nuclei increased by 1,2-fold, respect to non-transgenic or asymptomatic transgenic rats. p16INK4a-positive nuclei and Lamin B1-negative nuclei were typically localized in a subset of hypertrophic Iba1-positive microglia, occasionally exhibiting nuclear giant multinucleated cell aggregates and abnormal nuclear morphology. Next, we analyzed senescence markers in cell cultures of microglia obtained from the spinal cord of symptomatic SOD1G93A rats. Although microglia actively proliferated in cultures, a subset of them developed senescence markers after few days in vitro and subsequent passages. Senescent SOD1G93A microglia in culture conditions were characterized by large and flat morphology, senescence-associated beta-Galactosidase (SA-β-Gal) activity as well as positive labeling for p16INK4a, p53, matrix metalloproteinase-1 (MMP-1) and nitrotyrosine, suggesting a senescent-associated secretory phenotype (SASP). Remarkably, in the degenerating lumbar spinal cord other cell types, including ChAT-positive motor neurons and GFAP-expressing astrocytes, also displayed nuclear p16INK4a staining. These results suggest that cellular senescence is closely associated with inflammation and motor neuron loss occurring after paralysis onset in SOD1G93A rats. The emergence of senescent cells could mediate key pathogenic mechanisms in ALS.
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Affiliation(s)
| | - Pamela R Beilby
- Department of Biochemistry and Biophysics, Oregon State University, Corvallis, OR, United States.,Linus Pauling Institute, Oregon State University, Corvallis, OR, United States
| | | | | | | | | | - Samuel C Bradford
- Linus Pauling Institute, Oregon State University, Corvallis, OR, United States
| | - Joseph S Beckman
- Department of Biochemistry and Biophysics, Oregon State University, Corvallis, OR, United States.,Linus Pauling Institute, Oregon State University, Corvallis, OR, United States
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219
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Hobson S, Arefin S, Kublickiene K, Shiels PG, Stenvinkel P. Senescent Cells in Early Vascular Ageing and Bone Disease of Chronic Kidney Disease-A Novel Target for Treatment. Toxins (Basel) 2019; 11:toxins11020082. [PMID: 30717151 PMCID: PMC6409791 DOI: 10.3390/toxins11020082] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2018] [Revised: 01/23/2019] [Accepted: 01/24/2019] [Indexed: 12/13/2022] Open
Abstract
Together with bone-mineral disorders, premature vascular ageing is a common feature of the uremic phenotype. A detailed understanding of mechanisms involved remains unclear and warrants further research. Available treatment options for end stage renal disease are principally dialysis and organ transplantation, as other treatment alternatives have proven insufficient. Chronic kidney disease (CKD) has been proposed as a model of early vascular and bone ageing, with accumulating evidence supporting the contribution of cellular senescence and the senescence-associated secretory phenotype (SASP) to cardiovascular pathology in CKD. Correspondingly, novel therapies based around the use of senolytic compounds and nuclear factor-erythroid-2-related factor 2 (Nrf2) agonists, have been suggested as attractive novel treatment options. In this review, we detail the contribution of the uremic environment to these processes underpinning ageing and how these relate to vascular health.
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Affiliation(s)
- Sam Hobson
- Division of Renal Medicine, Department of Clinical Science, Technology and Intervention, Karolinska University Hospital, 14186 Stockholm, Sweden.
| | - Samsul Arefin
- Division of Renal Medicine, Department of Clinical Science, Technology and Intervention, Karolinska University Hospital, 14186 Stockholm, Sweden.
| | - Karolina Kublickiene
- Division of Renal Medicine, Department of Clinical Science, Technology and Intervention, Karolinska University Hospital, 14186 Stockholm, Sweden.
| | - Paul G Shiels
- Institute of Cancer Sciences, MVLS, University of Glasgow, Glasgow G61 1QH, UK.
| | - Peter Stenvinkel
- Division of Renal Medicine, Department of Clinical Science, Technology and Intervention, Karolinska University Hospital, 14186 Stockholm, Sweden.
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220
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Cells exhibiting strong p16 INK4a promoter activation in vivo display features of senescence. Proc Natl Acad Sci U S A 2019; 116:2603-2611. [PMID: 30683717 PMCID: PMC6377452 DOI: 10.1073/pnas.1818313116] [Citation(s) in RCA: 209] [Impact Index Per Article: 41.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
The accumulation of senescent cells over a lifetime causes age-related pathologies; however, the inability to reliably identify senescent cells in vivo has hindered clinical efforts to employ this knowledge as a means to ameliorate or reverse aging. Here, we describe a reporter allele, p16tdTom, enabling the in vivo identification and isolation of cells featuring high-level activation of the p16INK4a promoter. Our findings provide an insight into the functional and molecular characteristics of p16INK4a-activated cells in vitro and in vivo. We show that such cells accumulate with aging or other models of injury, and that they exhibit clinically targetable features of cellular senescence. The activation of cellular senescence throughout the lifespan promotes tumor suppression, whereas the persistence of senescent cells contributes to aspects of aging. This theory has been limited, however, by an inability to identify and isolate individual senescent cells within an intact organism. Toward that end, we generated a murine reporter strain by “knocking-in” a fluorochrome, tandem-dimer Tomato (tdTom), into exon 1α of the p16INK4a locus. We used this allele (p16tdTom) for the enumeration, isolation, and characterization of individual p16INK4a-expressing cells (tdTom+). The half-life of the knocked-in transcript was shorter than that of the endogenous p16INK4a mRNA, and therefore reporter expression better correlated with p16INK4a promoter activation than p16INK4a transcript abundance. The frequency of tdTom+ cells increased with serial passage in cultured murine embryo fibroblasts from p16tdTom/+ mice. In adult mice, tdTom+ cells could be readily detected at low frequency in many tissues, and the frequency of these cells increased with aging. Using an in vivo model of peritoneal inflammation, we compared the phenotype of cells with or without activation of p16INK4a and found that tdTom+ macrophages exhibited some features of senescence, including reduced proliferation, senescence-associated β-galactosidase (SA-β-gal) activation, and increased mRNA expression of a subset of transcripts encoding factors involved in SA-secretory phenotype (SASP). These results indicate that cells harboring activation of the p16INK4a promoter accumulate with aging and inflammation in vivo, and display characteristics of senescence.
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221
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Pan XH, Chen YH, Yang YK, Zhang XJ, Lin QK, Li ZA, Cai XM, Pang RQ, Zhu XQ, Ruan GP. Relationship between senescence in macaques and bone marrow mesenchymal stem cells and the molecular mechanism. Aging (Albany NY) 2019; 11:590-614. [PMID: 30673631 PMCID: PMC6366955 DOI: 10.18632/aging.101762] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2018] [Accepted: 01/05/2019] [Indexed: 04/18/2023]
Abstract
The relationship between bone marrow mesenchymal stem cells (BMSCs) and aging, as well as the antiaging effects of BMSCs, was observed. An aging macaque BMSC model was established. We isolated BMSCs from young and aged macaques and used RT-PCR and Western blot to confirm the aging-related mRNAs and their expression, revealing that TERT, SIRT1 and SIRT6 expression was decreased in the aged BMSCs. The morphology, immunophenotype, differentiation potential, proliferation potential, and antiaging effects of aged and young BMSCs on 293T cells were compared. The expression of aging-related genes and the difference between the secreted cytokines in natural aging and induced aging BMSCs were observed. The transcriptome of peripheral blood mononuclear cells from macaques was analyzed by high-throughput sequencing. Finally, the transcriptional characteristics and regulatory mechanisms of gene transcription in aging macaques were investigated.
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Affiliation(s)
- Xing-hua Pan
- Kunming Key Laboratory of Stem Cell and Regenerative Medicine, 920th Hospital of Joint Logistics Support Force, Kunming, Yunnan Province, China
- Stem Cells and Immune Cells Biomedical Techniques Integrated Engineering Laboratory of State and Regions, Kunming, Yunnan Province, China
- Cell Therapy Technology Transfer Medical Key Laboratory of Yunnan Province, Kunming, Yunnan Province, China
| | - Yu-hao Chen
- Kunming Key Laboratory of Stem Cell and Regenerative Medicine, 920th Hospital of Joint Logistics Support Force, Kunming, Yunnan Province, China
- Stem Cells and Immune Cells Biomedical Techniques Integrated Engineering Laboratory of State and Regions, Kunming, Yunnan Province, China
- Cell Therapy Technology Transfer Medical Key Laboratory of Yunnan Province, Kunming, Yunnan Province, China
| | - Yu-kun Yang
- Kunming Key Laboratory of Stem Cell and Regenerative Medicine, 920th Hospital of Joint Logistics Support Force, Kunming, Yunnan Province, China
- Stem Cells and Immune Cells Biomedical Techniques Integrated Engineering Laboratory of State and Regions, Kunming, Yunnan Province, China
- Cell Therapy Technology Transfer Medical Key Laboratory of Yunnan Province, Kunming, Yunnan Province, China
| | - Xue-juan Zhang
- Kunming Key Laboratory of Stem Cell and Regenerative Medicine, 920th Hospital of Joint Logistics Support Force, Kunming, Yunnan Province, China
- Stem Cells and Immune Cells Biomedical Techniques Integrated Engineering Laboratory of State and Regions, Kunming, Yunnan Province, China
- Cell Therapy Technology Transfer Medical Key Laboratory of Yunnan Province, Kunming, Yunnan Province, China
| | - Qing-keng Lin
- Kunming Key Laboratory of Stem Cell and Regenerative Medicine, 920th Hospital of Joint Logistics Support Force, Kunming, Yunnan Province, China
- Stem Cells and Immune Cells Biomedical Techniques Integrated Engineering Laboratory of State and Regions, Kunming, Yunnan Province, China
- Cell Therapy Technology Transfer Medical Key Laboratory of Yunnan Province, Kunming, Yunnan Province, China
| | - Zi-an Li
- Kunming Key Laboratory of Stem Cell and Regenerative Medicine, 920th Hospital of Joint Logistics Support Force, Kunming, Yunnan Province, China
- Stem Cells and Immune Cells Biomedical Techniques Integrated Engineering Laboratory of State and Regions, Kunming, Yunnan Province, China
- Cell Therapy Technology Transfer Medical Key Laboratory of Yunnan Province, Kunming, Yunnan Province, China
| | - Xue-min Cai
- Kunming Key Laboratory of Stem Cell and Regenerative Medicine, 920th Hospital of Joint Logistics Support Force, Kunming, Yunnan Province, China
- Stem Cells and Immune Cells Biomedical Techniques Integrated Engineering Laboratory of State and Regions, Kunming, Yunnan Province, China
- Cell Therapy Technology Transfer Medical Key Laboratory of Yunnan Province, Kunming, Yunnan Province, China
| | - Rong-qing Pang
- Kunming Key Laboratory of Stem Cell and Regenerative Medicine, 920th Hospital of Joint Logistics Support Force, Kunming, Yunnan Province, China
- Stem Cells and Immune Cells Biomedical Techniques Integrated Engineering Laboratory of State and Regions, Kunming, Yunnan Province, China
- Cell Therapy Technology Transfer Medical Key Laboratory of Yunnan Province, Kunming, Yunnan Province, China
| | - Xiang-qing Zhu
- Kunming Key Laboratory of Stem Cell and Regenerative Medicine, 920th Hospital of Joint Logistics Support Force, Kunming, Yunnan Province, China
- Stem Cells and Immune Cells Biomedical Techniques Integrated Engineering Laboratory of State and Regions, Kunming, Yunnan Province, China
- Cell Therapy Technology Transfer Medical Key Laboratory of Yunnan Province, Kunming, Yunnan Province, China
| | - Guang-ping Ruan
- Kunming Key Laboratory of Stem Cell and Regenerative Medicine, 920th Hospital of Joint Logistics Support Force, Kunming, Yunnan Province, China
- Stem Cells and Immune Cells Biomedical Techniques Integrated Engineering Laboratory of State and Regions, Kunming, Yunnan Province, China
- Cell Therapy Technology Transfer Medical Key Laboratory of Yunnan Province, Kunming, Yunnan Province, China
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Calcinotto A, Kohli J, Zagato E, Pellegrini L, Demaria M, Alimonti A. Cellular Senescence: Aging, Cancer, and Injury. Physiol Rev 2019; 99:1047-1078. [PMID: 30648461 DOI: 10.1152/physrev.00020.2018] [Citation(s) in RCA: 635] [Impact Index Per Article: 127.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
Cellular senescence is a permanent state of cell cycle arrest that occurs in proliferating cells subjected to different stresses. Senescence is, therefore, a cellular defense mechanism that prevents the cells to acquire an unnecessary damage. The senescent state is accompanied by a failure to re-enter the cell cycle in response to mitogenic stimuli, an enhanced secretory phenotype and resistance to cell death. Senescence takes place in several tissues during different physiological and pathological processes such as tissue remodeling, injury, cancer, and aging. Although senescence is one of the causative processes of aging and it is responsible of aging-related disorders, senescent cells can also play a positive role. In embryogenesis and tissue remodeling, senescent cells are required for the proper development of the embryo and tissue repair. In cancer, senescence works as a potent barrier to prevent tumorigenesis. Therefore, the identification and characterization of key features of senescence, the induction of senescence in cancer cells, or the elimination of senescent cells by pharmacological interventions in aging tissues is gaining consideration in several fields of research. Here, we describe the known key features of senescence, the cell-autonomous, and noncell-autonomous regulators of senescence, and we attempt to discuss the functional role of this fundamental process in different contexts in light of the development of novel therapeutic targets.
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Affiliation(s)
- Arianna Calcinotto
- Institute of Oncology Research (IOR), Oncology Institute of Southern Switzerland , Bellinzona , Switzerland ; University of Groningen, European Research Institute for the Biology of Ageing, University Medical Center Groningen , Groningen , The Netherlands ; IOR, Oncology Institute of Southern Switzerland , Bellinzona , Switzerland ; Università della Svizzera Italiana, Faculty of Biomedical Sciences , Lugano , Italy ; Faculty of Biology and Medicine, University of Lausanne UNIL , Lausanne , Switzerland ; and Department of Medicine, Venetian Institute of Molecular Medicine, University of Padova , Padova , Italy
| | - Jaskaren Kohli
- Institute of Oncology Research (IOR), Oncology Institute of Southern Switzerland , Bellinzona , Switzerland ; University of Groningen, European Research Institute for the Biology of Ageing, University Medical Center Groningen , Groningen , The Netherlands ; IOR, Oncology Institute of Southern Switzerland , Bellinzona , Switzerland ; Università della Svizzera Italiana, Faculty of Biomedical Sciences , Lugano , Italy ; Faculty of Biology and Medicine, University of Lausanne UNIL , Lausanne , Switzerland ; and Department of Medicine, Venetian Institute of Molecular Medicine, University of Padova , Padova , Italy
| | - Elena Zagato
- Institute of Oncology Research (IOR), Oncology Institute of Southern Switzerland , Bellinzona , Switzerland ; University of Groningen, European Research Institute for the Biology of Ageing, University Medical Center Groningen , Groningen , The Netherlands ; IOR, Oncology Institute of Southern Switzerland , Bellinzona , Switzerland ; Università della Svizzera Italiana, Faculty of Biomedical Sciences , Lugano , Italy ; Faculty of Biology and Medicine, University of Lausanne UNIL , Lausanne , Switzerland ; and Department of Medicine, Venetian Institute of Molecular Medicine, University of Padova , Padova , Italy
| | - Laura Pellegrini
- Institute of Oncology Research (IOR), Oncology Institute of Southern Switzerland , Bellinzona , Switzerland ; University of Groningen, European Research Institute for the Biology of Ageing, University Medical Center Groningen , Groningen , The Netherlands ; IOR, Oncology Institute of Southern Switzerland , Bellinzona , Switzerland ; Università della Svizzera Italiana, Faculty of Biomedical Sciences , Lugano , Italy ; Faculty of Biology and Medicine, University of Lausanne UNIL , Lausanne , Switzerland ; and Department of Medicine, Venetian Institute of Molecular Medicine, University of Padova , Padova , Italy
| | - Marco Demaria
- Institute of Oncology Research (IOR), Oncology Institute of Southern Switzerland , Bellinzona , Switzerland ; University of Groningen, European Research Institute for the Biology of Ageing, University Medical Center Groningen , Groningen , The Netherlands ; IOR, Oncology Institute of Southern Switzerland , Bellinzona , Switzerland ; Università della Svizzera Italiana, Faculty of Biomedical Sciences , Lugano , Italy ; Faculty of Biology and Medicine, University of Lausanne UNIL , Lausanne , Switzerland ; and Department of Medicine, Venetian Institute of Molecular Medicine, University of Padova , Padova , Italy
| | - Andrea Alimonti
- Institute of Oncology Research (IOR), Oncology Institute of Southern Switzerland , Bellinzona , Switzerland ; University of Groningen, European Research Institute for the Biology of Ageing, University Medical Center Groningen , Groningen , The Netherlands ; IOR, Oncology Institute of Southern Switzerland , Bellinzona , Switzerland ; Università della Svizzera Italiana, Faculty of Biomedical Sciences , Lugano , Italy ; Faculty of Biology and Medicine, University of Lausanne UNIL , Lausanne , Switzerland ; and Department of Medicine, Venetian Institute of Molecular Medicine, University of Padova , Padova , Italy
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Mahmoudi S, Xu L, Brunet A. Turning back time with emerging rejuvenation strategies. Nat Cell Biol 2019; 21:32-43. [PMID: 30602763 DOI: 10.1038/s41556-018-0206-0] [Citation(s) in RCA: 104] [Impact Index Per Article: 20.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2018] [Accepted: 08/24/2018] [Indexed: 01/10/2023]
Abstract
Ageing is associated with the functional decline of all tissues and a striking increase in many diseases. Although ageing has long been considered a one-way street, strategies to delay and potentially even reverse the ageing process have recently been developed. Here, we review four emerging rejuvenation strategies-systemic factors, metabolic manipulations, senescent cell ablation and cellular reprogramming-and discuss their mechanisms of action, cellular targets, potential trade-offs and application to human ageing.
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Affiliation(s)
- Salah Mahmoudi
- Department of Genetics, Stanford University, Stanford, CA, USA
| | - Lucy Xu
- Department of Genetics, Stanford University, Stanford, CA, USA.,Department of Biology, Stanford University, Stanford, CA, USA
| | - Anne Brunet
- Department of Genetics, Stanford University, Stanford, CA, USA. .,Glenn Laboratories for the Biology of Aging, Stanford University, Stanford, CA, USA.
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224
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Ishaq A, Dufour D, Cameron K, von Zglinicki T, Saretzki G. Metabolic memory of dietary restriction ameliorates DNA damage and adipocyte size in mouse visceral adipose tissue. Exp Gerontol 2018; 113:228-236. [PMID: 30312736 DOI: 10.1016/j.exger.2018.10.008] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2018] [Revised: 09/24/2018] [Accepted: 10/08/2018] [Indexed: 11/30/2022]
Abstract
Dietary restriction (DR) is thought to exert its beneficial effects on healthspan at least partially by a senolytic and senostatic action, i.e. by reducing frequencies of cells with markers of DNA damage and senescence in multiple tissues. Due to its importance in metabolic and inflammation regulation, fat is a prime tissue for health span determination as well as a prime target for DR. We aimed to determine here whether the beneficial effects of DR would be retained over a subsequent period of ad libitum (AL) feeding. Male mice were kept under either 40% DR or AL feeding regimes from 3 to 12 months of age and then either switched back to the opposite feeding regimen or kept in the same state for another 3 months. Visceral adipose tissue from 4 to 5 mice per group for all conditions was analysed for markers of senescence (adipocyte size, γH2A.X, p16, p21) and inflammation (e.g. IL-6, TNFα, IL-1β) using immuno-staining or qPCR. Macrophages were detected by immunohistochemistry. We found that both 9 and 12 months DR (long term) as well as 3 month (short term, mid-life onset) DR reduced the number of cells harbouring DNA damage and adipocyte size (area and perimeter) in visceral adipocytes with similar efficiency. Importantly, beneficial health markers induced by DR such as small adipocyte size and low DNA damage were maintained for at least 3 month after termination of DR, demonstrating that the previously identified 'metabolic memory' of the DR state in male mice extends to senescence markers in visceral fat.
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Affiliation(s)
- Abbas Ishaq
- The Ageing Biology Centre, Newcastle Institute for Ageing, Institute for Cell and Molecular Biosciences, Campus of Ageing and Vitality, Newcastle upon Tyne, UK
| | - Damien Dufour
- The Ageing Biology Centre, Newcastle Institute for Ageing, Institute for Cell and Molecular Biosciences, Campus of Ageing and Vitality, Newcastle upon Tyne, UK
| | - Kerry Cameron
- The Ageing Biology Centre, Newcastle Institute for Ageing, Institute for Cell and Molecular Biosciences, Campus of Ageing and Vitality, Newcastle upon Tyne, UK
| | - Thomas von Zglinicki
- The Ageing Biology Centre, Newcastle Institute for Ageing, Institute for Cell and Molecular Biosciences, Campus of Ageing and Vitality, Newcastle upon Tyne, UK
| | - Gabriele Saretzki
- The Ageing Biology Centre, Newcastle Institute for Ageing, Institute for Cell and Molecular Biosciences, Campus of Ageing and Vitality, Newcastle upon Tyne, UK.
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225
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Stojiljkovic MR, Ain Q, Bondeva T, Heller R, Schmeer C, Witte OW. Phenotypic and functional differences between senescent and aged murine microglia. Neurobiol Aging 2018; 74:56-69. [PMID: 30439594 DOI: 10.1016/j.neurobiolaging.2018.10.007] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2017] [Revised: 07/16/2018] [Accepted: 10/04/2018] [Indexed: 11/20/2022]
Abstract
Microglia, the key innate immune cells in the brain, have been reported to drive brain aging and neurodegenerative disorders; however, few studies have analyzed microglial senescence and the impact of aging on the properties of microglia. In the present study, we characterized senescence- and aging-associated phenotypes of murine brain microglia using well-accepted markers, including telomere length, telomerase activity, expression of p16INK4a, p21, p53, senescence-associated β-galactosidase, and a senescence-associated secretory phenotype. Quantitative real-time polymerase chain reaction analysis and a Telomeric Repeat Amplification Protocol assay indicated shortened telomeres and increased telomerase activity in senescent microglia, whereas telomeres remained unaltered and telomerase activity was reduced in aged microglia. Senescent microglia upregulated p16INK4a, p21, and p53, whereas acutely isolated microglia from the aged brain only exhibited a modest upregulation of p16INK4a. Senescent microglia showed decreased proliferation, while it was unchanged in aged microglia. Furthermore, microglia at late passages strongly upregulated expression of the senescent marker senescence-associated β-galactosidase. Senescent and aged microglia exhibited differential activation profiles and altered responses to stimulation. We conclude that microglia from the aged mouse brain do not show typical senescent changes because their phenotype and functional response strongly differ from those of senescent microglia in vitro.
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Affiliation(s)
| | - Quratul Ain
- Hans Berger Department of Neurology, Jena University Hospital, Jena, Germany
| | - Tzvetanka Bondeva
- Department of Internal Medicine III, Jena University Hospital, Jena, Germany
| | - Regine Heller
- Institute for Molecular Cell Biology, Center for Molecular Biomedicine, Jena University Hospital, Jena, Germany
| | - Christian Schmeer
- Hans Berger Department of Neurology, Jena University Hospital, Jena, Germany
| | - Otto W Witte
- Hans Berger Department of Neurology, Jena University Hospital, Jena, Germany.
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226
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Mendelsohn AR, Larrick JW. Prevention of Senescence in Vasculature Through Quiescence. Rejuvenation Res 2018; 21:477-481. [DOI: 10.1089/rej.2018.2138] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Affiliation(s)
- Andrew R. Mendelsohn
- Panorama Research Institute, Sunnyvale, California
- Regenerative Sciences Institute, Sunnyvale, California
| | - James W. Larrick
- Panorama Research Institute, Sunnyvale, California
- Regenerative Sciences Institute, Sunnyvale, California
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227
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Mikawa R, Suzuki Y, Baskoro H, Kanayama K, Sugimoto K, Sato T, Sugimoto M. Elimination of p19 ARF -expressing cells protects against pulmonary emphysema in mice. Aging Cell 2018; 17:e12827. [PMID: 30058137 PMCID: PMC6156494 DOI: 10.1111/acel.12827] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2018] [Revised: 06/04/2018] [Accepted: 06/23/2018] [Indexed: 11/29/2022] Open
Abstract
Senescent cells accumulate in tissues during aging and are considered to underlie several aging‐associated phenotypes and diseases. We recently reported that the elimination of p19ARF‐expressing senescent cells from lung tissue restored tissue function and gene expression in middle‐aged (12‐month‐old) mice. The aging of lung tissue increases the risk of pulmonary diseases such as emphysema, and cellular senescence is accelerated in emphysema patients. However, there is currently no direct evidence to show that cellular senescence promotes the pathology of emphysema, and the involvement of senescence in the development of this disease has yet to be clarified. We herein demonstrated that p19ARF facilitated the development of pulmonary emphysema in mice. The elimination of p19ARF‐expressing cells prevented lung tissue from elastase‐induced lung dysfunction. These effects appeared to depend on reduced pulmonary inflammation, which is enhanced after elastase stimulation. Furthermore, the administration of a senolytic drug that selectively kills senescent cells attenuated emphysema‐associated pathologies. These results strongly suggest the potential of senescent cells as therapeutic/preventive targets for pulmonary emphysema.
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Affiliation(s)
- Ryuta Mikawa
- Research Institute; National Center for Geriatrics and Gerontology; Obu Japan
| | - Yohei Suzuki
- Department of Respiratory Medicine; Juntendo University School of Medicine; Tokyo Japan
| | - Hario Baskoro
- Department of Respiratory Medicine; Juntendo University School of Medicine; Tokyo Japan
| | - Kazuki Kanayama
- Department of Clinical Nutrition; Suzuka University of Medical Science; Suzuka Japan
| | - Kazushi Sugimoto
- Department of Molecular and Laboratory Medicine, Department of Gastroenterology; Mie University Graduate School of Medicine; Tsu Japan
| | - Tadashi Sato
- Department of Respiratory Medicine; Juntendo University School of Medicine; Tokyo Japan
| | - Masataka Sugimoto
- Research Institute; National Center for Geriatrics and Gerontology; Obu Japan
- Department of Aging Research; Nagoya University Graduate School of Medicine; Nagoya Japan
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228
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Yousefzadeh MJ, Zhu Y, McGowan SJ, Angelini L, Fuhrmann-Stroissnigg H, Xu M, Ling YY, Melos KI, Pirtskhalava T, Inman CL, McGuckian C, Wade EA, Kato JI, Grassi D, Wentworth M, Burd CE, Arriaga EA, Ladiges WL, Tchkonia T, Kirkland JL, Robbins PD, Niedernhofer LJ. Fisetin is a senotherapeutic that extends health and lifespan. EBioMedicine 2018; 36:18-28. [PMID: 30279143 PMCID: PMC6197652 DOI: 10.1016/j.ebiom.2018.09.015] [Citation(s) in RCA: 518] [Impact Index Per Article: 86.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2018] [Revised: 08/30/2018] [Accepted: 09/10/2018] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND Senescence is a tumor suppressor mechanism activated in stressed cells to prevent replication of damaged DNA. Senescent cells have been demonstrated to play a causal role in driving aging and age-related diseases using genetic and pharmacologic approaches. We previously demonstrated that the combination of dasatinib and the flavonoid quercetin is a potent senolytic improving numerous age-related conditions including frailty, osteoporosis and cardiovascular disease. The goal of this study was to identify flavonoids with more potent senolytic activity. METHODS A panel of flavonoid polyphenols was screened for senolytic activity using senescent murine and human fibroblasts, driven by oxidative and genotoxic stress, respectively. The top senotherapeutic flavonoid was tested in mice modeling a progeroid syndrome carrying a p16INK4a-luciferase reporter and aged wild-type mice to determine the effects of fisetin on senescence markers, age-related histopathology, disease markers, health span and lifespan. Human adipose tissue explants were used to determine if results translated. FINDINGS Of the 10 flavonoids tested, fisetin was the most potent senolytic. Acute or intermittent treatment of progeroid and old mice with fisetin reduced senescence markers in multiple tissues, consistent with a hit-and-run senolytic mechanism. Fisetin reduced senescence in a subset of cells in murine and human adipose tissue, demonstrating cell-type specificity. Administration of fisetin to wild-type mice late in life restored tissue homeostasis, reduced age-related pathology, and extended median and maximum lifespan. INTERPRETATION The natural product fisetin has senotherapeutic activity in mice and in human tissues. Late life intervention was sufficient to yield a potent health benefit. These characteristics suggest the feasibility to translation to human clinical studies. FUND: NIH grants P01 AG043376 (PDR, LJN), U19 AG056278 (PDR, LJN, WLL), R24 AG047115 (WLL), R37 AG013925 (JLK), R21 AG047984 (JLK), P30 DK050456 (Adipocyte Subcore, JLK), a Glenn Foundation/American Federation for Aging Research (AFAR) BIG Award (JLK), Glenn/AFAR (LJN, CEB), the Ted Nash Long Life and Noaber Foundations (JLK), the Connor Group (JLK), Robert J. and Theresa W. Ryan (JLK), and a Minnesota Partnership Grant (AMAY-UMN#99)-P004610401-1 (JLK, EAA).
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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, Jupiter, FL 33458, United States
| | - Yi Zhu
- Robert and Arlene Kogod Center on Aging, Mayo Clinic, 200 First St., S.W., Rochester, MN 55905, United States
| | - Sara J McGowan
- Department of Molecular Medicine and the Center on Aging, The Scripps Research Institute, 130 Scripps Way, Jupiter, FL 33458, United States
| | - Luise Angelini
- Department of Molecular Medicine and the Center on Aging, The Scripps Research Institute, 130 Scripps Way, Jupiter, FL 33458, United States
| | - Heike Fuhrmann-Stroissnigg
- Department of Molecular Medicine and the Center on Aging, The Scripps Research Institute, 130 Scripps Way, Jupiter, FL 33458, United States
| | - Ming Xu
- Robert and Arlene Kogod Center on Aging, Mayo Clinic, 200 First St., S.W., Rochester, MN 55905, United States
| | - Yuan Yuan Ling
- Department of Molecular Medicine and the Center on Aging, The Scripps Research Institute, 130 Scripps Way, Jupiter, FL 33458, United States
| | - Kendra I Melos
- Department of Molecular Medicine and the Center on Aging, The Scripps Research Institute, 130 Scripps Way, Jupiter, FL 33458, United States
| | - Tamar Pirtskhalava
- Robert and Arlene Kogod Center on Aging, Mayo Clinic, 200 First St., S.W., Rochester, MN 55905, United States
| | - Christina L Inman
- Robert and Arlene Kogod Center on Aging, Mayo Clinic, 200 First St., S.W., Rochester, MN 55905, United States
| | - Collin McGuckian
- Department of Molecular Medicine and the Center on Aging, The Scripps Research Institute, 130 Scripps Way, Jupiter, FL 33458, United States
| | - Erin A Wade
- Department of Molecular Medicine and the Center on Aging, The Scripps Research Institute, 130 Scripps Way, Jupiter, FL 33458, United States
| | - Jonathon I Kato
- Department of Molecular Medicine and the Center on Aging, The Scripps Research Institute, 130 Scripps Way, Jupiter, FL 33458, United States
| | - Diego Grassi
- Department of Molecular Medicine and the Center on Aging, The Scripps Research Institute, 130 Scripps Way, Jupiter, FL 33458, United States
| | - Mark Wentworth
- Office of Research Regulatory Support, Mayo Clinic, Rochester, MN 55905, United States
| | - Christin E Burd
- Department of Molecular Genetics and Cancer Biology and Genetics, The Ohio State University, Columbus, OH 43210, United States
| | - Edgar A Arriaga
- Department of Chemistry, University of Minnesota, Minneapolis, MN 55455-0431, United States
| | - Warren L Ladiges
- Department of Comparative Medicine, University of Washington, Seattle, WA 98195, United States
| | - Tamara Tchkonia
- Robert and Arlene Kogod Center on Aging, Mayo Clinic, 200 First St., S.W., Rochester, MN 55905, United States
| | - James L Kirkland
- Robert and Arlene Kogod Center on Aging, Mayo Clinic, 200 First St., S.W., Rochester, MN 55905, United States
| | - Paul D Robbins
- Department of Molecular Medicine and the Center on Aging, The Scripps Research Institute, 130 Scripps Way, Jupiter, FL 33458, United States.
| | - Laura J Niedernhofer
- Department of Molecular Medicine and the Center on Aging, The Scripps Research Institute, 130 Scripps Way, Jupiter, FL 33458, United States.
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229
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Muñoz-Espín D, Rovira M, Galiana I, Giménez C, Lozano-Torres B, Paez-Ribes M, Llanos S, Chaib S, Muñoz-Martín M, Ucero AC, Garaulet G, Mulero F, Dann SG, VanArsdale T, Shields DJ, Bernardos A, Murguía JR, Martínez-Máñez R, Serrano M. A versatile drug delivery system targeting senescent cells. EMBO Mol Med 2018; 10:e9355. [PMID: 30012580 PMCID: PMC6127887 DOI: 10.15252/emmm.201809355] [Citation(s) in RCA: 181] [Impact Index Per Article: 30.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2018] [Revised: 06/20/2018] [Accepted: 06/22/2018] [Indexed: 12/11/2022] Open
Abstract
Senescent cells accumulate in multiple aging-associated diseases, and eliminating these cells has recently emerged as a promising therapeutic approach. Here, we take advantage of the high lysosomal β-galactosidase activity of senescent cells to design a drug delivery system based on the encapsulation of drugs with galacto-oligosaccharides. We show that gal-encapsulated fluorophores are preferentially released within senescent cells in mice. In a model of chemotherapy-induced senescence, gal-encapsulated cytotoxic drugs target senescent tumor cells and improve tumor xenograft regression in combination with palbociclib. Moreover, in a model of pulmonary fibrosis in mice, gal-encapsulated cytotoxics target senescent cells, reducing collagen deposition and restoring pulmonary function. Finally, gal-encapsulation reduces the toxic side effects of the cytotoxic drugs. Drug delivery into senescent cells opens new diagnostic and therapeutic applications for senescence-associated disorders.
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Affiliation(s)
- Daniel Muñoz-Espín
- Tumor Suppression Group, Spanish National Cancer Research Centre (CNIO), Madrid, Spain
- CRUK Cambridge Centre Early Detection Programme, Department of Oncology, Hutchison/MRC Research Centre, University of Cambridge, Cambridge, UK
| | - Miguel Rovira
- Tumor Suppression Group, Spanish National Cancer Research Centre (CNIO), Madrid, Spain
- Cellular Plasticity and Disease Group, Institute for Research in Biomedicine (IRB Barcelona), Barcelona Institute of Science and Technology (BIST), Barcelona, Spain
| | - Irene Galiana
- Instituto Interuniversitario de Investigación de Reconocimiento Molecular y Desarrollo Tecnológico (IDM), Universitat Politècnica de València, Universitat de València, Valencia, Spain
- CIBER de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Spain
| | - Cristina Giménez
- Instituto Interuniversitario de Investigación de Reconocimiento Molecular y Desarrollo Tecnológico (IDM), Universitat Politècnica de València, Universitat de València, Valencia, Spain
| | - Beatriz Lozano-Torres
- Instituto Interuniversitario de Investigación de Reconocimiento Molecular y Desarrollo Tecnológico (IDM), Universitat Politècnica de València, Universitat de València, Valencia, Spain
- CIBER de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Spain
| | - Marta Paez-Ribes
- CRUK Cambridge Centre Early Detection Programme, Department of Oncology, Hutchison/MRC Research Centre, University of Cambridge, Cambridge, UK
| | - Susana Llanos
- Tumor Suppression Group, Spanish National Cancer Research Centre (CNIO), Madrid, Spain
| | - Selim Chaib
- Tumor Suppression Group, Spanish National Cancer Research Centre (CNIO), Madrid, Spain
- Cellular Plasticity and Disease Group, Institute for Research in Biomedicine (IRB Barcelona), Barcelona Institute of Science and Technology (BIST), Barcelona, Spain
| | - Maribel Muñoz-Martín
- Tumor Suppression Group, Spanish National Cancer Research Centre (CNIO), Madrid, Spain
- Cellular Plasticity and Disease Group, Institute for Research in Biomedicine (IRB Barcelona), Barcelona Institute of Science and Technology (BIST), Barcelona, Spain
| | - Alvaro C Ucero
- Genes, Development and Disease Group, Spanish National Cancer Research Centre (CNIO), Madrid, Spain
| | - Guillermo Garaulet
- Molecular Imaging Unit, Spanish National Cancer Research Centre (CNIO), Madrid, Spain
| | - Francisca Mulero
- Molecular Imaging Unit, Spanish National Cancer Research Centre (CNIO), Madrid, Spain
| | - Stephen G Dann
- Oncology R&D Group, Pfizer Worldwide Research & Development, Pfizer Inc., La Jolla, CA, USA
| | - Todd VanArsdale
- Oncology R&D Group, Pfizer Worldwide Research & Development, Pfizer Inc., La Jolla, CA, USA
| | - David J Shields
- Oncology R&D Group, Pfizer Worldwide Research & Development, Pfizer Inc., La Jolla, CA, USA
| | - Andrea Bernardos
- Instituto Interuniversitario de Investigación de Reconocimiento Molecular y Desarrollo Tecnológico (IDM), Universitat Politècnica de València, Universitat de València, Valencia, Spain
- CIBER de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Spain
| | - José Ramón Murguía
- Instituto Interuniversitario de Investigación de Reconocimiento Molecular y Desarrollo Tecnológico (IDM), Universitat Politècnica de València, Universitat de València, Valencia, Spain
- CIBER de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Spain
| | - Ramón Martínez-Máñez
- Instituto Interuniversitario de Investigación de Reconocimiento Molecular y Desarrollo Tecnológico (IDM), Universitat Politècnica de València, Universitat de València, Valencia, Spain
- CIBER de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Spain
- Departamento de Química, Universitat Politècnica de València, Valencia, Spain
| | - Manuel Serrano
- Tumor Suppression Group, Spanish National Cancer Research Centre (CNIO), Madrid, Spain
- Cellular Plasticity and Disease Group, Institute for Research in Biomedicine (IRB Barcelona), Barcelona Institute of Science and Technology (BIST), Barcelona, Spain
- Catalan Institution for Research and Advanced Studies (ICREA), Barcelona, Spain
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Gurău F, Baldoni S, Prattichizzo F, Espinosa E, Amenta F, Procopio AD, Albertini MC, Bonafè M, Olivieri F. Anti-senescence compounds: A potential nutraceutical approach to healthy aging. Ageing Res Rev 2018; 46:14-31. [PMID: 29742452 DOI: 10.1016/j.arr.2018.05.001] [Citation(s) in RCA: 112] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2018] [Revised: 04/02/2018] [Accepted: 05/03/2018] [Indexed: 01/10/2023]
Abstract
The desire of eternal youth seems to be as old as mankind. However, the increasing life expectancy experienced by populations in developed countries also involves a significantly increased incidence of the most common age-related diseases (ARDs). Senescent cells (SCs) have been identified as culprits of organismal aging. Their number rises with age and their senescence-associated secretory phenotype fuels the chronic, pro-inflammatory systemic state (inflammaging) that characterizes aging, impairing the regenerative ability of stem cells and increasing the risk of developing ARDs. A variegated class of molecules, including synthetic senolytic compounds and natural compounds contained in food, have been suggested to possess anti-senescence activity. Senolytics are attracting growing interest, and their safety and reliability as anti-senescence drugs are being assessed in human clinical trials. Notably, since SCs spread inflammation at the systemic level through pro-oxidant and pro-inflammatory signals, foods rich in polyphenols, which exert antioxidant and anti-inflammatory actions, have the potential to be harnessed as "anti-senescence foods" in a nutraceutical approach to healthier aging. We discuss the beneficial effects of polyphenol-rich foods in relation to the Mediterranean diet and the dietary habits of long-lived individuals, and examine their ability to modulate bacterial genera in the gut.
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Affiliation(s)
- Felicia Gurău
- Department of Clinical and Molecular Sciences, DISCLIMO, Università Politecnica delle Marche, Ancona, Italy
| | - Simone Baldoni
- School of Medicinal Sciences and Health Products, University of Camerino, Camerino, Italy
| | | | - Emma Espinosa
- Department of Clinical and Molecular Sciences, DISCLIMO, Università Politecnica delle Marche, Ancona, Italy
| | - Francesco Amenta
- School of Medicinal Sciences and Health Products, University of Camerino, Camerino, Italy
| | - Antonio Domenico Procopio
- Department of Clinical and Molecular Sciences, DISCLIMO, Università Politecnica delle Marche, Ancona, Italy; Center of Clinical Pathology and Innovative Therapy, INRCA-IRCCS National Institute, Ancona, Italy
| | | | - Massimiliano Bonafè
- DIMES- Department of Experimental, Diagnostic and Specialty Medicine, Alma Mater Studiorum, Bologna, Italy; Biosciences Laboratory, Istituto Scientifico Romagnolo per lo Studio e la Cura dei Tumori (IRST) IRCCS, Forlì, Italy.
| | - Fabiola Olivieri
- Department of Clinical and Molecular Sciences, DISCLIMO, Università Politecnica delle Marche, Ancona, Italy; Center of Clinical Pathology and Innovative Therapy, INRCA-IRCCS National Institute, Ancona, Italy.
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231
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Xu M, Pirtskhalava T, Farr JN, Weigand BM, Palmer AK, Weivoda MM, Inman CL, Ogrodnik MB, Hachfeld CM, Fraser DG, Onken JL, Johnson KO, Verzosa GC, Langhi LGP, Weigl M, Giorgadze N, LeBrasseur NK, Miller JD, Jurk D, Singh RJ, Allison DB, Ejima K, Hubbard GB, Ikeno Y, Cubro H, Garovic VD, Hou X, Weroha SJ, Robbins PD, Niedernhofer LJ, Khosla S, Tchkonia T, Kirkland JL. Senolytics improve physical function and increase lifespan in old age. Nat Med 2018; 24:1246-1256. [PMID: 29988130 PMCID: PMC6082705 DOI: 10.1038/s41591-018-0092-9] [Citation(s) in RCA: 1286] [Impact Index Per Article: 214.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2017] [Accepted: 05/09/2018] [Indexed: 12/18/2022]
Abstract
Physical function declines in old age, portending disability, increased health expenditures, and mortality. Cellular senescence, leading to tissue dysfunction, may contribute to these consequences of aging, but whether senescence can directly drive age-related pathology and be therapeutically targeted is still unclear. Here we demonstrate that transplanting relatively small numbers of senescent cells into young mice is sufficient to cause persistent physical dysfunction, as well as to spread cellular senescence to host tissues. Transplanting even fewer senescent cells had the same effect in older recipients and was accompanied by reduced survival, indicating the potency of senescent cells in shortening health- and lifespan. The senolytic cocktail, dasatinib plus quercetin, which causes selective elimination of senescent cells, decreased the number of naturally occurring senescent cells and their secretion of frailty-related proinflammatory cytokines in explants of human adipose tissue. Moreover, intermittent oral administration of senolytics to both senescent cell-transplanted young mice and naturally aged mice alleviated physical dysfunction and increased post-treatment survival by 36% while reducing mortality hazard to 65%. Our study provides proof-of-concept evidence that senescent cells can cause physical dysfunction and decreased survival even in young mice, while senolytics can enhance remaining health- and lifespan in old mice.
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Affiliation(s)
- Ming Xu
- Robert and Arlene Kogod Center on Aging, Mayo Clinic, Rochester, MN, USA.
- University of Connecticut Center on Aging, University of Connecticut Health, Farmington, CT, USA.
| | - Tamar Pirtskhalava
- Robert and Arlene Kogod Center on Aging, Mayo Clinic, Rochester, MN, USA
| | - Joshua N Farr
- Robert and Arlene Kogod Center on Aging, Mayo Clinic, Rochester, MN, USA
| | - Bettina M Weigand
- Robert and Arlene Kogod Center on Aging, Mayo Clinic, Rochester, MN, USA
- Newcastle University Institute for Ageing and Institute for Cell and Molecular Biosciences, Newcastle University, Newcastle upon Tyne, UK
| | - Allyson K Palmer
- Robert and Arlene Kogod Center on Aging, Mayo Clinic, Rochester, MN, USA
| | - Megan M Weivoda
- Robert and Arlene Kogod Center on Aging, Mayo Clinic, Rochester, MN, USA
| | - Christina L Inman
- Robert and Arlene Kogod Center on Aging, Mayo Clinic, Rochester, MN, USA
| | - Mikolaj B Ogrodnik
- Robert and Arlene Kogod Center on Aging, Mayo Clinic, Rochester, MN, USA
- Newcastle University Institute for Ageing and Institute for Cell and Molecular Biosciences, Newcastle University, Newcastle upon Tyne, UK
| | | | - Daniel G Fraser
- Robert and Arlene Kogod Center on Aging, Mayo Clinic, Rochester, MN, USA
| | - Jennifer L Onken
- Robert and Arlene Kogod Center on Aging, Mayo Clinic, Rochester, MN, USA
| | - Kurt O Johnson
- Robert and Arlene Kogod Center on Aging, Mayo Clinic, Rochester, MN, USA
| | - Grace C Verzosa
- Robert and Arlene Kogod Center on Aging, Mayo Clinic, Rochester, MN, USA
| | - Larissa G P Langhi
- Robert and Arlene Kogod Center on Aging, Mayo Clinic, Rochester, MN, USA
| | - Moritz Weigl
- Robert and Arlene Kogod Center on Aging, Mayo Clinic, Rochester, MN, USA
| | - Nino Giorgadze
- Robert and Arlene Kogod Center on Aging, Mayo Clinic, Rochester, MN, USA
| | | | - Jordan D Miller
- Robert and Arlene Kogod Center on Aging, Mayo Clinic, Rochester, MN, USA
| | - Diana Jurk
- Newcastle University Institute for Ageing and Institute for Cell and Molecular Biosciences, Newcastle University, Newcastle upon Tyne, UK
| | - Ravinder J Singh
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, USA
| | - David B Allison
- Department of Epidemiology & Biostatistics, School of Public Health, Indiana University-Bloomington, Bloomington, IN, USA
- Nathan Shock Center on Comparative Energetics and Aging, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Keisuke Ejima
- Department of Epidemiology & Biostatistics, School of Public Health, Indiana University-Bloomington, Bloomington, IN, USA
- Nathan Shock Center on Comparative Energetics and Aging, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Gene B Hubbard
- Barshop Institute for Longevity and Aging Studies and Department of Pathology, University of Texas Health Science Center at San Antonio, San Antonio, TX, USA
| | - Yuji Ikeno
- Barshop Institute for Longevity and Aging Studies and Department of Pathology, University of Texas Health Science Center at San Antonio, San Antonio, TX, USA
- Geriatric Research Education and Clinical Center, South Texas Veterans Healthcare System, San Antonio, TX, USA
| | - Hajrunisa Cubro
- Department of Internal Medicine, Division of Nephrology and Hypertension, Mayo Clinic, Rochester, MN, USA
| | - Vesna D Garovic
- Department of Internal Medicine, Division of Nephrology and Hypertension, Mayo Clinic, Rochester, MN, USA
| | - Xiaonan Hou
- Department of Oncology, Mayo Clinic, Rochester, MN, USA
| | - S John Weroha
- Department of Oncology, Mayo Clinic, Rochester, MN, USA
| | - Paul D Robbins
- Department of Molecular Medicine, Center on Aging, Scripps Research Institute, Jupiter, FL, USA
| | - Laura J Niedernhofer
- Department of Molecular Medicine, Center on Aging, Scripps Research Institute, Jupiter, FL, USA
| | - Sundeep Khosla
- Robert and Arlene Kogod Center on Aging, Mayo Clinic, Rochester, MN, USA
| | - Tamara Tchkonia
- Robert and Arlene Kogod Center on Aging, Mayo Clinic, Rochester, MN, USA.
| | - James L Kirkland
- Robert and Arlene Kogod Center on Aging, Mayo Clinic, Rochester, MN, USA.
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232
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Fu W, Liu Y, Sun C, Yin H. Transient p53 inhibition sensitizes aged white adipose tissue for beige adipocyte recruitment by blocking mitophagy. FASEB J 2018; 33:844-856. [PMID: 30052487 DOI: 10.1096/fj.201800577r] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Aging of white adipose tissue (WAT) is associated with reduced insulin sensitivity, which contributes to whole-body glucose intolerance. WAT aging in mice impairs cold-induced beige adipocyte recruitment (beiging), which has been attributed to the senescence of adipose progenitor cells. Tumor suppressor p53 has also been implicated in WAT aging. However, whether p53-related cellular aging in mature white adipocytes is causative of age-impaired WAT beiging remains unknown. It is also unclear whether transient p53 inhibition can rescue WAT beiging. Herein, we report that p53 increased in adipose tissues of 28-wk-old (aged) mice with impaired beiging capability. Cold exposure decreased p53 in beiging WAT of young mice but not in aged mice. In aged mice, inducible p53 ablation in differentiated adipocytes restored cold-induced WAT beiging and augmented whole-body energy expenditure and insulin sensitivity. Transient pharmacological inhibition of p53 led to the same beneficial effects. Mechanistically, cold exposure repressed autophagy in beiging WAT of young mice yet increased autophagy in aged WAT. p53-ablation reduced microtubule-associated protein light chain 3-mediated mitochondria clearance (mitophagy) and hence facilitated the increase of mitochondria during beiging. These findings suggest that p53-induced mitophagy in aged white adipocytes impedes WAT beiging and may be therapeutically targeted to improve insulin sensitivity in aged WAT.-Fu, W., Liu, Y., Sun, C., Yin, H. Transient p53 inhibition sensitizes aged white adipose tissue for beige adipocyte recruitment by blocking mitophagy.
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Affiliation(s)
- Wenyan Fu
- Department of Biochemistry and Molecular Biology, University of Georgia, Athens, Georgia, USA.,Center for Molecular Medicine, The University of Georgia, Athens, Georgia, USA; and
| | - Yang Liu
- Department of Biochemistry and Molecular Biology, University of Georgia, Athens, Georgia, USA.,Center for Molecular Medicine, The University of Georgia, Athens, Georgia, USA; and
| | - Christina Sun
- Department of Biological Sciences, Augusta University, Augusta, Georgia, USA
| | - Hang Yin
- Department of Biochemistry and Molecular Biology, University of Georgia, Athens, Georgia, USA.,Center for Molecular Medicine, The University of Georgia, Athens, Georgia, USA; and
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233
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Wu J, Saovieng S, Cheng IS, Liu T, Hong S, Lin CY, Su IC, Huang CY, Kuo CH. Ginsenoside Rg1 supplementation clears senescence-associated β-galactosidase in exercising human skeletal muscle. J Ginseng Res 2018; 43:580-588. [PMID: 31695564 PMCID: PMC6823780 DOI: 10.1016/j.jgr.2018.06.002] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2018] [Revised: 06/08/2018] [Accepted: 06/14/2018] [Indexed: 11/17/2022] Open
Abstract
Background Ginsenoside Rg1 has been shown to clear senescence-associated beta-galactosidase (SA-β-gal) in cultured cells. It remains unknown whether Rg1 can influence SA-β-gal in exercising human skeletal muscle. Methods To examine SA-β-gal change, 12 young men (age 21 ± 0.2 years) were enrolled in a randomized double-blind placebo controlled crossover study, under two occasions: placebo (PLA) and Rg1 (5 mg) supplementations 1 h prior to a high-intensity cycling (70% VO2max). Muscle samples were collected by multiple biopsies before and after cycling exercise (0 h and 3 h). To avoid potential effect of muscle biopsy on performance assessment, cycling time to exhaustion test (80% VO2max) was conducted on another 12 participants (age 23 ± 0.5 years) with the same experimental design. Results No changes of SA-β-gal were observed after cycling in the PLA trial. On the contrary, nine of the 12 participants showed complete elimination of SA-β-gal in exercised muscle after cycling in the Rg1 trial (p < 0.05). Increases in apoptotic DNA fragmentation (PLA: +87% vs. Rg1: +133%, p < 0.05) and CD68+ (PLA: +78% vs. Rg1: +121%, p = 0.17) occurred immediately after cycling in both trials. During the 3-h recovery, reverses in apoptotic nuclei content (PLA: +5% vs. Rg1: −32%, p < 0.01) and increases in inducible nitrate oxide synthase and interleukin 6 mRNA levels of exercised muscle were observed only in the Rg1 trial (p < 0.01). Conclusion Rg1 supplementation effectively eliminates senescent cells in exercising human skeletal muscle and improves high-intensity endurance performance.
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Affiliation(s)
- Jinfu Wu
- Laboratory of Exercise Biochemistry, University of Taipei, Taipei, Taiwan
| | - Suchada Saovieng
- Laboratory of Exercise Biochemistry, University of Taipei, Taipei, Taiwan
| | - I-Shiung Cheng
- Laboratory of Exercise Nutrition, National Taichung University of Education, Taichung, Taiwan
| | - Tiemin Liu
- Department of Endocrinology and Metabolism, State Key Laboratory of Genetic Engineering, and School of Life Sciences, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Shangyu Hong
- Department of Endocrinology and Metabolism, State Key Laboratory of Genetic Engineering, and School of Life Sciences, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Chang-Yu Lin
- Laboratory of Exercise Nutrition, National Taichung University of Education, Taichung, Taiwan
| | - I-Chen Su
- Graduate Institute of Basic Medical Science, China Medical University, Taichung, Taiwan
| | - Chih-Yang Huang
- Graduate Institute of Basic Medical Science, China Medical University, Taichung, Taiwan.,Department of Healthcare Administration, Asia University, Taichung, Taiwan
| | - Chia-Hua Kuo
- Laboratory of Exercise Biochemistry, University of Taipei, Taipei, Taiwan
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234
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Abstract
Purpose of Review Functional decline of hematopoiesis that occurs in the elderly, or in patients who receive therapies that trigger cellular senescence effects, results in a progressive reduction in the immune response and an increased incidence of myeloid malignancy. Intracellular signals in hematopoietic stem cells and progenitors (HSC/P) mediate systemic, microenvironment, and cell-intrinsic effector aging signals that induce their decline. This review intends to summarize and critically review our advances in the understanding of the intracellular signaling pathways responsible for HSC decline during aging and opportunities for intervention. Recent Findings For a long time, aging of HSC has been thought to be an irreversible process imprinted in stem cells due to the cell intrinsic nature of aging. However, recent murine models and human correlative studies provide evidence that aging is associated with molecular signaling pathways, including oxidative stress, metabolic dysfunction, loss of polarity and an altered epigenome. These signaling pathways provide potential targets for prevention or reversal of age-related changes. Summary Here we review our current understanding of the signalling pathways that are differentially activated or repressed during HSC/P aging, focusing on the oxidative, metabolic, biochemical and structural consequences downstream, and cell-intrinsic, systemic, and environmental influences.
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236
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Childs BG, Li H, van Deursen JM. Senescent cells: a therapeutic target for cardiovascular disease. J Clin Invest 2018; 128:1217-1228. [PMID: 29608141 DOI: 10.1172/jci95146] [Citation(s) in RCA: 128] [Impact Index Per Article: 21.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Cellular senescence, a major tumor-suppressive cell fate, has emerged from humble beginnings as an in vitro phenomenon into recognition as a fundamental mechanism of aging. In the process, senescent cells have attracted attention as a therapeutic target for age-related diseases, including cardiovascular disease (CVD), the leading cause of morbidity and mortality in the elderly. Given the aging global population and the inadequacy of current medical management, attenuating the health care burden of CVD would be transformative to clinical practice. Here, we review the evidence that cellular senescence drives CVD in a bimodal fashion by both priming the aged cardiovascular system for disease and driving established disease forward. Hence, the growing field of senotherapy (neutralizing senescent cells for therapeutic benefit) is poised to contribute to both prevention and treatment of CVD.
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Affiliation(s)
| | - Hu Li
- Department of Molecular Pharmacology and Experimental Therapeutics, and
| | - Jan M van Deursen
- Department of Biochemistry and Molecular Biology.,Department of Pediatric and Adolescent Medicine, Mayo Clinic, Rochester, Minnesota, USA
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237
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Jeon OH, David N, Campisi J, Elisseeff JH. Senescent cells and osteoarthritis: a painful connection. J Clin Invest 2018; 128:1229-1237. [PMID: 29608139 PMCID: PMC5873863 DOI: 10.1172/jci95147] [Citation(s) in RCA: 191] [Impact Index Per Article: 31.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
Senescent cells (SnCs) are associated with age-related pathologies. Osteoarthritis is a chronic disease characterized by pain, loss of cartilage, and joint inflammation, and its incidence increases with age. For years, the presence of SnCs in cartilage isolated from patients undergoing total knee artificial implants has been noted, but these cells' relevance to disease was unclear. In this Review, we summarize current knowledge of SnCs in the multiple tissues that constitute the articular joint. New evidence for the causative role of SnCs in the development of posttraumatic and age-related arthritis is reviewed along with the therapeutic benefit of SnC clearance. As part of their senescence-associated secretory phenotype, SnCs secrete cytokines that impact the immune system and its response to joint tissue trauma. We present concepts of the immune response to tissue trauma as well as the interactions with SnCs and the local tissue environment. Finally, we discuss therapeutic implications of targeting SnCs in treating osteoarthritis.
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Affiliation(s)
- Ok Hee Jeon
- Translational Tissue Engineering Center, Wilmer Eye Institute and Department of Biomedical Engineering, Johns Hopkins University, Baltimore, Maryland, USA
- Buck Institute for Research on Aging, Novato, California, USA
| | | | - Judith Campisi
- Buck Institute for Research on Aging, Novato, California, USA
| | - Jennifer H. Elisseeff
- Translational Tissue Engineering Center, Wilmer Eye Institute and Department of Biomedical Engineering, Johns Hopkins University, Baltimore, Maryland, USA
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238
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Hudgins AD, Tazearslan C, Tare A, Zhu Y, Huffman D, Suh Y. Age- and Tissue-Specific Expression of Senescence Biomarkers in Mice. Front Genet 2018. [PMID: 29527222 PMCID: PMC5829053 DOI: 10.3389/fgene.2018.00059] [Citation(s) in RCA: 71] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Cellular senescence is a state of irreversible cellular growth arrest accompanied by distinct changes in gene expression and the acquisition of a complex proinflammatory secretory profile termed the senescence-associated secretory phenotype (SASP). Senescent cells accumulate in aged tissues and contribute to age-related disease in mice. Increasing evidence that selective removal of senescent cells can ameliorate diseases of late life and extend lifespan in mice has given rise to the development of senolytics that target senescent cells as anti-aging therapeutics. To realize the full potential of senolytic medicine, robust biomarkers of senescence must be in place to monitor the in vivo appearance of senescent cells with age, as well as their removal by senolytic treatments. Here we investigate the dynamic changes in expression of the molecular hallmarks of senescence, including p16Ink4a, p21Cip1, and SASP factors in multiple tissues in mice during aging. We show that expression of these markers is highly variable in age- and tissue-specific manners. Nevertheless, Mmp12 represents a robust SASP factor that shows consistent age-dependent increases in expression across all tissues analyzed in this study and p16Ink4a expression is consistently increased with age in most tissues. Likewise, in humans CDKN2A (p16Ink4a) is one of the top genes exhibiting elevated expression in multiple tissues with age as revealed by data analysis of the Genotype-Tissue Expression (GTEx) project. These results support the targeting of p16Ink4a expressing-cells in senolytic treatments, while emphasizing the need to establish a panel of robust biomarkers of senescence in vivo in both mice and humans.
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Affiliation(s)
- Adam D Hudgins
- Department of Genetics, Albert Einstein College of Medicine, Bronx, NY, United States
| | - Cagdas Tazearslan
- Department of Genetics, Albert Einstein College of Medicine, Bronx, NY, United States
| | - Archana Tare
- Department of Genetics, Albert Einstein College of Medicine, Bronx, NY, United States
| | - Yizhou Zhu
- Department of Genetics, Albert Einstein College of Medicine, Bronx, NY, United States
| | - Derek Huffman
- Department of Molecular Pharmacology, Albert Einstein College of Medicine, Bronx, NY, United States.,Department of Medicine, Albert Einstein College of Medicine, Bronx, NY, United States
| | - Yousin Suh
- Department of Genetics, Albert Einstein College of Medicine, Bronx, NY, United States.,Department of Medicine, Albert Einstein College of Medicine, Bronx, NY, United States.,Department of Ophthalmology and Visual Sciences, Albert Einstein College of Medicine, Bronx, NY, United States
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