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MicroRNAs, Long Non-Coding RNAs, and Circular RNAs in the Redox Control of Cell Senescence. Antioxidants (Basel) 2022; 11:antiox11030480. [PMID: 35326131 PMCID: PMC8944605 DOI: 10.3390/antiox11030480] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2022] [Revised: 02/21/2022] [Accepted: 02/24/2022] [Indexed: 12/18/2022] Open
Abstract
Cell senescence is critical in diverse aspects of organism life. It is involved in tissue development and homeostasis, as well as in tumor suppression. Consequently, it is tightly integrated with basic physiological processes during life. On the other hand, senescence is gradually being considered as a major contributor of organismal aging and age-related diseases. Increased oxidative stress is one of the main risk factors for cellular damages, and thus a driver of senescence. In fact, there is an intimate link between cell senescence and response to different types of cellular stress. Oxidative stress occurs when the production of reactive oxygen species/reactive nitrogen species (ROS/RNS) is not adequately detoxified by the antioxidant defense systems. Non-coding RNAs are endogenous transcripts that govern gene regulatory networks, thus impacting both physiological and pathological events. Among these molecules, microRNAs, long non-coding RNAs, and more recently circular RNAs are considered crucial mediators of almost all cellular processes, including those implicated in oxidative stress responses. Here, we will describe recent data on the link between ROS/RNS-induced senescence and the current knowledge on the role of non-coding RNAs in the senescence program.
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Nayeri Rad A, Shams G, Avelar RA, Morowvat MH, Ghasemi Y. Potential senotherapeutic candidates and their combinations derived from transcriptional connectivity and network measures. INFORMATICS IN MEDICINE UNLOCKED 2022. [DOI: 10.1016/j.imu.2022.100920] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
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Chan J, Eide IA, Tannæs TM, Waldum-Grevbo B, Jenssen T, Svensson M. Marine n-3 Polyunsaturated Fatty Acids and Cellular Senescence Markers in Incident Kidney Transplant Recipients: The Omega-3 Fatty Acids in Renal Transplantation (ORENTRA) Randomized Clinical Trial. Kidney Med 2021; 3:1041-1049. [PMID: 34939013 PMCID: PMC8664741 DOI: 10.1016/j.xkme.2021.07.010] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Rationale & Objective Deterioration of kidney graft function is associated with accelerated cellular senescence. Marine n-3 polyunsaturated fatty acids (PUFAs) have favorable properties that may counteract cellular senescence development and damage caused by the senescence-associated secretory phenotype (SASP) secretome. Our objective was to investigate the potential effects of marine n-3 PUFA supplementation on the SASP secretome in kidney transplant recipients. Study Design Exploratory substudy of the Omega-3 Fatty Acids in Renal Transplantation trial. Setting & Participants Adult kidney transplant recipients with a functional kidney graft (defined as having an estimated glomerular filtration rate of >30 mL/min/1.73 m2) 8 weeks after engraftment were included in this study conducted in Norway. Analytical Approach The intervention consisted of 2.6 g of a marine n-3 PUFA or olive oil (placebo) daily for 44 weeks. The outcome was a predefined panel of SASP components in the plasma and urine. Results A total of 132 patients were enrolled in the Omega-3 Fatty Acids in Renal Transplantation trial, and 66 patients were allocated to receive either the study drug or placebo. The intervention with the marine n-3 PUFA was associated with reduced plasma levels of granulocyte colony-stimulating factor, interleukin 1α, macrophage inflammatory protein 1α, matrix metalloproteinase (MMP)-1, and MMP-13 compared with the intervention in the control group. Limitations Post hoc analysis. Conclusions The results suggest that marine n-3 PUFA supplementation has mitigating effects on the plasma SASP components granulocyte colony-stimulating factor, interleukin 1α, macrophage inflammatory protein 1α, MMP-1, and MMP-13 in kidney transplant recipients. Future studies with kidney transplant recipients in maintenance phase, combined with an evaluation of cellular senescence markers in kidney transplant biopsies, are needed to further elucidate the potential antisenescent effect of marine n-3 PUFAs. This trial is registered as NCT01744067.
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Affiliation(s)
- Joe Chan
- Department of Renal Medicine, Akershus University Hospital, Lørenskog.,Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo
| | - Ivar A Eide
- Department of Renal Medicine, Akershus University Hospital, Lørenskog.,Department of Transplantation Medicine, Oslo University Hospital Rikshospitalet, Oslo
| | - Tone M Tannæs
- Department of Clinical Molecular Biology (EpiGen), Division of Medicine, Akershus University Hospital and University of Oslo, Lørenskog
| | - Bård Waldum-Grevbo
- Department of Nephrology, Oslo University Hospital Ullevål, Oslo, Norway
| | - Trond Jenssen
- Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo.,Department of Transplantation Medicine, Oslo University Hospital Rikshospitalet, Oslo
| | - My Svensson
- Department of Renal Medicine, Akershus University Hospital, Lørenskog.,Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo
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Stojiljković A, Gaschen V, Forterre F, Rytz U, Stoffel MH, Bluteau J. Novel immortalization approach defers senescence of cultured canine adipose-derived mesenchymal stromal cells. GeroScience 2021; 44:1301-1323. [PMID: 34806133 DOI: 10.1007/s11357-021-00488-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Accepted: 11/08/2021] [Indexed: 01/10/2023] Open
Abstract
In the last decades, the scientific community spared no effort to elucidate the therapeutic potential of mesenchymal stromal cells (MSCs). Unfortunately, in vitro cellular senescence occurring along with a loss of proliferative capacity is a major drawback in view of future therapeutic applications of these cells in the field of regenerative medicine. Even though insight into the mechanisms of replicative senescence in human medicine has evolved dramatically, knowledge about replicative senescence of canine MSCs is still scarce. Thus, we developed a high-content analysis workflow to simultaneously investigate three important characteristics of senescence in canine adipose-derived MSCs (cAD-MSCs): morphological changes, activation of the cell cycle arrest machinery, and increased activity of the senescence-associated β-galactosidase. We took advantage of this tool to demonstrate that passaging of cAD-MSCs results in the appearance of a senescence phenotype and proliferation arrest. This was partially prevented upon immortalization of these cells using a newly designed PiggyBac™ Transposon System, which allows for the expression of the human polycomb ring finger proto-oncogene BMI1 and the human telomerase reverse transcriptase under the same promotor. Our results indicate that cAD-MSCs immortalized with this new vector maintain their proliferation capacity and differentiation potential for a longer time than untreated cAD-MSCs. This study not only offers a workflow to investigate replicative senescence in eukaryotic cells with a high-content analysis approach but also paves the way for a rapid and effective generation of immortalized MSC lines. This promotes a better understanding of these cells in view of future applications in regenerative medicine.
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Affiliation(s)
- Ana Stojiljković
- Division of Veterinary Anatomy, Vetsuisse Faculty, University of Bern, Bern, Switzerland. .,Graduate School for Cellular and Biomedical Sciences, University of Bern, Bern, Switzerland.
| | - Véronique Gaschen
- Division of Veterinary Anatomy, Vetsuisse Faculty, University of Bern, Bern, Switzerland
| | - Franck Forterre
- Division of Small Animal Surgery and Orthopaedics, Vetsuisse Faculty, University of Bern, Bern, Switzerland
| | - Ulrich Rytz
- Division of Small Animal Surgery and Orthopaedics, Vetsuisse Faculty, University of Bern, Bern, Switzerland
| | - Michael H Stoffel
- Division of Veterinary Anatomy, Vetsuisse Faculty, University of Bern, Bern, Switzerland
| | - Jasmin Bluteau
- Division of Veterinary Anatomy, Vetsuisse Faculty, University of Bern, Bern, Switzerland
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Chang-Panesso M. Acute kidney injury and aging. Pediatr Nephrol 2021; 36:2997-3006. [PMID: 33411069 PMCID: PMC8260619 DOI: 10.1007/s00467-020-04849-0] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/12/2020] [Revised: 10/06/2020] [Accepted: 11/04/2020] [Indexed: 01/29/2023]
Abstract
Our aging population is growing and developing treatments for age-related diseases such as Alzheimer's and Parkinson's disease has taken on an increasing urgency and is accompanied by high public awareness. The already high and rising incidence of acute kidney injury (AKI) in the elderly, however, has received relatively little attention despite the potentially fatal outcomes associated with an episode of AKI in this age group. When discussing AKI and aging, one should consider two aspects: first, elderly patients have an increased susceptibility to an AKI episode, and second, they have decreased kidney repair after AKI given the high incidence of progression to chronic kidney disease (CKD). It is unclear if the same factors that drive the increased susceptibility to AKI could be playing a role in the decreased repair capacity or if they are totally different and unrelated. This review will examine current knowledge on the risk factors for the increased susceptibility to AKI in the elderly and will also explore potential aspects that might contribute to a decreased kidney repair response in this age group.
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Majewska J, Krizhanovsky V. Breathe it in - Spotlight on senescence and regeneration in the lung. Mech Ageing Dev 2021; 199:111550. [PMID: 34352324 DOI: 10.1016/j.mad.2021.111550] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2021] [Revised: 07/07/2021] [Accepted: 07/30/2021] [Indexed: 12/19/2022]
Abstract
Cellular senescence, a highly coordinated and programmed cellular state, has a functional role in both lung physiology and pathology. While the contribution of senescent cells is recognized in the context of ageing and age-related pulmonary diseases, relatively less is known how cellular senescence of functionally distinct cell types leads to the progression of these pathologies. Recent advances in tools to track and isolate senescent cells from tissues, shed a light on the identity, behavior and function of senescent cells in vivo. The transient presence of senescent cells has an indispensable role in limiting lung damage and contributes to organ regenerative capacity upon acute stress insults. In contrast, persistent accumulation of senescent cells is a driver of age-related decline in organ function. Here, we discuss lung physiology and pathology as an example of seemingly contradictory role of senescence in structural and functional integrity of the tissue upon damage, and in age-related pulmonary diseases.
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Affiliation(s)
- Julia Majewska
- Department of Molecular Cell Biology, The Weizmann Institute of Science, Rehovot 7610001, Israel
| | - Valery Krizhanovsky
- Department of Molecular Cell Biology, The Weizmann Institute of Science, Rehovot 7610001, Israel.
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Wang G, Cheng X, Zhang J, Liao Y, Jia Y, Qing C. Possibility of inducing tumor cell senescence during therapy. Oncol Lett 2021; 22:496. [PMID: 33981358 PMCID: PMC8108274 DOI: 10.3892/ol.2021.12757] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2019] [Accepted: 02/17/2021] [Indexed: 12/17/2022] Open
Abstract
The treatment options for cancer include surgery, radiotherapy and chemotherapy. However, the traditional approach of high-dose chemotherapy brings tremendous toxic side effects to patients, as well as potentially causing drug resistance. Drug resistance affects cell proliferation, cell senescence and apoptosis. Cellular senescence refers to the process in which cells change from an active proliferative status to a growth-arrested status. There are multiple factors that regulate this process and cellular senescence is activated by various pathways. Senescent cells present specific characteristics, such as an increased cell volume, flattened cell body morphology, ceased cell division and the expression of β-galactosidase. Tumor senescence can be categorized into replicative senescence and premature senescence. Cellular senescence may inhibit the occurrence and development of tumors, serving as an innovative strategy for the treatment of cancer. The present review mainly focuses on senescent biomarkers, methods for the induction of cellular senescence and its possible application in the treatment of cancer.
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Affiliation(s)
- Guohui Wang
- School of Pharmaceutical Sciences and Yunnan Provincial Key Laboratory of Pharmacology for Natural Products, Kunming Medical University, Kunming, Yunnan 650500, P.R. China
| | - Xianliang Cheng
- School of Pharmaceutical Sciences and Yunnan Provincial Key Laboratory of Pharmacology for Natural Products, Kunming Medical University, Kunming, Yunnan 650500, P.R. China
| | - Jingyi Zhang
- School of Pharmaceutical Sciences and Yunnan Provincial Key Laboratory of Pharmacology for Natural Products, Kunming Medical University, Kunming, Yunnan 650500, P.R. China
| | - Yuan Liao
- School of Pharmaceutical Sciences and Yunnan Provincial Key Laboratory of Pharmacology for Natural Products, Kunming Medical University, Kunming, Yunnan 650500, P.R. China
| | - Yinnong Jia
- School of Pharmaceutical Sciences and Yunnan Provincial Key Laboratory of Pharmacology for Natural Products, Kunming Medical University, Kunming, Yunnan 650500, P.R. China
| | - Chen Qing
- School of Pharmaceutical Sciences and Yunnan Provincial Key Laboratory of Pharmacology for Natural Products, Kunming Medical University, Kunming, Yunnan 650500, P.R. China
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Zeeshan M, Sonthalia S, Yadav P, Gupta P, Agrawal M, Bhatia J, Jha AK, Roy PK. Do oxidative stress and melanin accumulation contribute to the pathogenesis of idiopathic guttate hypomelanosis: A prospective case-control study. J Cosmet Dermatol 2021; 21:1154-1162. [PMID: 33894101 DOI: 10.1111/jocd.14171] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Revised: 04/06/2021] [Accepted: 04/08/2021] [Indexed: 01/08/2023]
Abstract
BACKGROUND Oxidative stress parameters have been reported to be significantly higher than controls in diverse disorders of pigmentation but no such data seem to be extant for IGH. OBJECTIVES To verify whether heightened oxidative stress levels are seen in patients with IGH (compared with matched controls) and quantify the same in blood using appropriate biochemical markers. Further, an attempt to determine if there might be any correlation between the amount of oxidative stress and the severity of the disease. METHODOLOGY This prospective case-control study was conducted in Northern India. Thirty Indian patients (Fitzpatrick skin phototype (SPT) IV-V) were included. The diagnosis of IGH lesions was confirmed based on characteristic clinical, and dermoscopic characteristics and confirmed on histopathological examination (H & E) of one of the lesions. RESULTS The oxidative stress enzyme level was significantly higher among the cases compared to controls which were statistically significant (p < 0.05). A positive correlation was also observed between the levels of these markers and number of lesions, but this finding was statistically not significant [p > 0.05]. Assessment of melanin level by Dopa staining method in the IGH lesions revealed irregularly distributed melanin with areas of high and low melanin content and greater accumulation in the basement layer. CONCLUSION The results of this probably the first study evaluating oxidative stress in IGH show that the oxidative stress is increased in patients with IGH. Level of oxidative stress seems to be correlated with both age of the patient (more in the elderly) and number of lesions.
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Affiliation(s)
- Md Zeeshan
- Department of Skin & V.D, Patna Medical College and Hospital, Patna, Bihar, India
| | - Sidharth Sonthalia
- Department of Dermatology & Dermatosurgery SKINNOCENCE, The Skin Clinic & Research Centre, Gurugram, India
| | - Priyanka Yadav
- Department of Dermatology & Dermatosurgery SKINNOCENCE, The Skin Clinic & Research Centre, Gurugram, India
| | - Pooja Gupta
- Department of Dermatology, Venereology and Leprology, L.H Hiranandani Hospital, Mumbai, India
| | - Mahima Agrawal
- Department of Skin & V.D, Department of Dermatology and STD, Lady Hardinge Medical College, New Delhi, India
| | | | - Abhijeet Kumar Jha
- Department of Skin & V.D, Patna Medical College and Hospital, Patna, Bihar, India
| | - Prasoon Kumar Roy
- Department of Skin & V.D, Nalanda Medical College and Hospital, Patna, India
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ASIC1 and ASIC3 mediate cellular senescence of human nucleus pulposus mesenchymal stem cells during intervertebral disc degeneration. Aging (Albany NY) 2021; 13:10703-10723. [PMID: 33824228 PMCID: PMC8064223 DOI: 10.18632/aging.202850] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2020] [Accepted: 02/16/2021] [Indexed: 12/22/2022]
Abstract
Stem cell approaches have become an attractive therapeutic option for intervertebral disc degeneration (IVDD). Nucleus pulposus mesenchymal stem cells (NP-MSCs) participate in the regeneration and homeostasis of the intervertebral disc (IVD), but the molecular mechanisms governing these processes remain to be elucidated. Acid-sensing ion channels (ASICs) which act as key receptors for extracellular protons in central and peripheral neurons, have been implicated in IVDD where degeneration is associated with reduced microenvironmental pH. Here we show that ASIC1 and ASIC3, but not ASIC2 and ASIC4 are upregulated in human IVDs according to the degree of clinical degeneration. Subjecting IVD-derived NP-MSCs to pH 6.6 culture conditions to mimic pathological IVD changes resulted in decreased cell proliferation that was associated with cell cycle arrest and induction of senescence. Key molecular changes observed were increased expression of p53, p21, p27, p16 and Rb1. Instructively, premature senescence in NP-MSCs could be largely alleviated using ASIC inhibitors, suggesting both ASIC1 and ASIC3 act decisively upstream to activate senescence programming pathways including p53-p21/p27 and p16-Rb1 signaling. These results highlight the potential of ASIC inhibitors as a therapeutic approach for IVDD and broadly define an in vitro system that can be used to evaluate other IVDD therapies.
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Kumari R, Jat P. Mechanisms of Cellular Senescence: Cell Cycle Arrest and Senescence Associated Secretory Phenotype. Front Cell Dev Biol 2021; 9:645593. [PMID: 33855023 PMCID: PMC8039141 DOI: 10.3389/fcell.2021.645593] [Citation(s) in RCA: 656] [Impact Index Per Article: 218.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Accepted: 02/16/2021] [Indexed: 01/10/2023] Open
Abstract
Cellular senescence is a stable cell cycle arrest that can be triggered in normal cells in response to various intrinsic and extrinsic stimuli, as well as developmental signals. Senescence is considered to be a highly dynamic, multi-step process, during which the properties of senescent cells continuously evolve and diversify in a context dependent manner. It is associated with multiple cellular and molecular changes and distinct phenotypic alterations, including a stable proliferation arrest unresponsive to mitogenic stimuli. Senescent cells remain viable, have alterations in metabolic activity and undergo dramatic changes in gene expression and develop a complex senescence-associated secretory phenotype. Cellular senescence can compromise tissue repair and regeneration, thereby contributing toward aging. Removal of senescent cells can attenuate age-related tissue dysfunction and extend health span. Senescence can also act as a potent anti-tumor mechanism, by preventing proliferation of potentially cancerous cells. It is a cellular program which acts as a double-edged sword, with both beneficial and detrimental effects on the health of the organism, and considered to be an example of evolutionary antagonistic pleiotropy. Activation of the p53/p21WAF1/CIP1 and p16INK4A/pRB tumor suppressor pathways play a central role in regulating senescence. Several other pathways have recently been implicated in mediating senescence and the senescent phenotype. Herein we review the molecular mechanisms that underlie cellular senescence and the senescence associated growth arrest with a particular focus on why cells stop dividing, the stability of the growth arrest, the hypersecretory phenotype and how the different pathways are all integrated.
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Affiliation(s)
- Ruchi Kumari
- MRC Prion Unit at UCL, UCL Institute of Prion Diseases, London, United Kingdom
| | - Parmjit Jat
- MRC Prion Unit at UCL, UCL Institute of Prion Diseases, London, United Kingdom
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Senolytic targets and new strategies for clearing senescent cells. Mech Ageing Dev 2021; 195:111468. [PMID: 33741395 DOI: 10.1016/j.mad.2021.111468] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Revised: 03/06/2021] [Accepted: 03/10/2021] [Indexed: 01/10/2023]
Abstract
Senescent cells (SCs) accumulate with age and cause various age-related diseases. Clearance of SCs by transgenic or pharmaceutical strategies has been demonstrated to delay aging, treat age-related diseases and extend healthspan. SCs are resistant to various stressors because they are protected from apoptosis by SC anti-apoptotic pathways (SCAPs). Targeting the proteins in the SCAPs with small molecules can selectively kill SCs, the effector proteins are called senolytic targets and the small molecules are called senolytics. Until now, a series of senolytic targets, such as BCL-XL, heat shock protein 90 (HSP90), Na+/K+ ATPase, bromodomain containing 4 (BRD4), and oxidation resistance 1 (OXR1) have been identified. However, current senolytics targeting these proteins still have some limitations in killing SCs in terms of safety, specificity and broad-spectrum activity. To overcome the challenges, some new strategies, such as proteolysis-targeting chimera (PROTAC) technology, chimeric antigen receptor (CAR) T cells, and β-galactosidase-modified prodrugs, were developed to clear SCs and shown to have promising therapeutic potential. Here we review the significance of SCs in aging and age-related diseases, summarize the known senolytic targets and highlight the emerging new strategies for clearing SCs.
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Di Micco R, Krizhanovsky V, Baker D, d'Adda di Fagagna F. Cellular senescence in ageing: from mechanisms to therapeutic opportunities. Nat Rev Mol Cell Biol 2021; 22:75-95. [PMID: 33328614 PMCID: PMC8344376 DOI: 10.1038/s41580-020-00314-w] [Citation(s) in RCA: 892] [Impact Index Per Article: 297.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/02/2020] [Indexed: 12/11/2022]
Abstract
Cellular senescence, first described in vitro in 1961, has become a focus for biotech companies that target it to ameliorate a variety of human conditions. Eminently characterized by a permanent proliferation arrest, cellular senescence occurs in response to endogenous and exogenous stresses, including telomere dysfunction, oncogene activation and persistent DNA damage. Cellular senescence can also be a controlled programme occurring in diverse biological processes, including embryonic development. Senescent cell extrinsic activities, broadly related to the activation of a senescence-associated secretory phenotype, amplify the impact of cell-intrinsic proliferative arrest and contribute to impaired tissue regeneration, chronic age-associated diseases and organismal ageing. This Review discusses the mechanisms and modulators of cellular senescence establishment and induction of a senescence-associated secretory phenotype, and provides an overview of cellular senescence as an emerging opportunity to intervene through senolytic and senomorphic therapies in ageing and ageing-associated diseases.
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Affiliation(s)
- Raffaella Di Micco
- San Raffaele Telethon Institute for Gene Therapy (SR-TIGET), IRCCS San Raffaele Scientific Institute, Milan, Italy.
| | - Valery Krizhanovsky
- Department of Molecular Cell Biology, The Weizmann Institute of Science, Rehovot, Israel
| | - Darren Baker
- Department of Pediatrics, Mayo Clinic, Rochester, MN, USA
- Department of Biochemistry and Molecular Biology, Mayo Clinic, Rochester, MN, USA
| | - Fabrizio d'Adda di Fagagna
- IFOM - The FIRC Institute of Molecular Oncology, Milan, Italy.
- Istituto di Genetica Molecolare, Consiglio Nazionale delle Ricerche, Pavia, Italy.
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Abstract
Significance: Senescence is an essential biological process that blocks tumorigenesis, limits tissue damage, and aids embryonic development. However, once senescent cells accumulate in tissues during aging, they promote the development of age-related diseases and limit health span. Thus, it is essential to expand the boundaries of our knowledge about the mechanisms responsible for controlling cellular senescence. Recent Advances: Cellular metabolism plays a significant role in the regulation of various signaling processes involved in cell senescence. In the past decade, our knowledge about the interplay between cell signaling, cell metabolism, and cellular senescence has significantly expanded. Critical Issues: In this study, we review metabolic pathways in senescent cells and the impact of these pathways on the response to DNA damage and the senescence-associated secretory phenotype. Future Directions: Future research should elucidate metabolic mechanisms that promote specific alterations in senescent cell phenotype, with a final goal of developing a new therapeutic strategy. Antioxid. Redox Signal. 34, 324-334.
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Affiliation(s)
- Riva Shmulevich
- Department of Molecular Cell Biology, Weizmann Institute of Science, Rehovot, Israel
| | - Valery Krizhanovsky
- Department of Molecular Cell Biology, Weizmann Institute of Science, Rehovot, Israel
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Li P, Mao WW, Zhang S, Zhang L, Chen ZR, Lu ZD. Sodium hydrosulfide alleviates dexamethasone-induced cell senescence and dysfunction through targeting the miR-22/sirt1 pathway in osteoblastic MC3T3-E1 cells. Exp Ther Med 2021; 21:238. [PMID: 33603846 PMCID: PMC7851607 DOI: 10.3892/etm.2021.9669] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2020] [Accepted: 09/15/2020] [Indexed: 01/30/2023] Open
Abstract
Glucocorticoid-induced osteoporosis is characterized by osteoblastic cell and microarchitecture dysfunction, as well as a loss of bone mass. Cell senescence contributes to the pathological process of osteoporosis and sodium hydrosulfide (NaHS) regulates the potent protective effects through delaying cell senescence. The aim of the present study was to investigate whether senescence could contribute to dexamethasone (Dex)-induced osteoblast impairment and to examine the effect of NaHS on Dex-induced cell senescence and damage. It was found that the levels of the senescence-associated markers, p53 and p21, were markedly increased in osteoblasts exposed to Dex. A p53 inhibitor reversed Dex-induced osteoblast injury, a process that was mitigated by NaHS administration through alleviating osteoblastic cell senescence. MicroRNA (miR)-22 blocked the impact of NaHS on Dex-induced osteoblast damage and senescence through targeting the regulation of Sirtuin 1 (sirt1) expression, as shown by the decreased cell viability and alkaline phosphatase activity, as well as an increased expression of p53 and p21. It was revealed that the sirt1 gene was the target of miR-22 in osteoblastic MC3T3-E1 cells through combining the results of dual luciferase reporter assays and reverse transcription-quantitative PCR, as well as western blot analyses. Silencing of sirt1 abolished the protective effect of NaHS against Dex-associated osteoblast senescence and injury. Taken together, the present study showed that NaHS prevents Dex-induced cell senescence and damage through targeting the miR-22/sirt1 pathway in osteoblastic MC3T3-E1 cells.
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Affiliation(s)
- Peng Li
- Department of Orthopedics, General Hospital of Ningxia Medical University, Xingqing, Yinchuan, Ningxia 750004, P.R. China
| | - Wei-Wei Mao
- Clinical Skill Center of Yinchuan First People's Hospital, Yinchuan, Ningxia 750001, P.R. China
| | - Shuai Zhang
- Department of Orthopedics, General Hospital of Ningxia Medical University, Xingqing, Yinchuan, Ningxia 750004, P.R. China
| | - Liang Zhang
- Department of Orthopedics, General Hospital of Ningxia Medical University, Xingqing, Yinchuan, Ningxia 750004, P.R. China
| | - Zhi-Rong Chen
- Department of Orthopedics, General Hospital of Ningxia Medical University, Xingqing, Yinchuan, Ningxia 750004, P.R. China
| | - Zhi-Dong Lu
- Department of Orthopedics, General Hospital of Ningxia Medical University, Xingqing, Yinchuan, Ningxia 750004, P.R. China
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Roupakia E, Markopoulos GS, Kolettas E. Genes and pathways involved in senescence bypass identified by functional genetic screens. Mech Ageing Dev 2021; 194:111432. [PMID: 33422562 DOI: 10.1016/j.mad.2021.111432] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2020] [Revised: 12/30/2020] [Accepted: 01/01/2021] [Indexed: 10/22/2022]
Abstract
Cellular senescence is a state of stable and irreversible cell cycle arrest with active metabolism, that normal cells undergo after a finite number of divisions (Hayflick limit). Senescence can be triggered by intrinsic and/or extrinsic stimuli including telomere shortening at the end of a cell's lifespan (telomere-initiated senescence) and in response to oxidative, genotoxic or oncogenic stresses (stress-induced premature senescence). Several effector mechanisms have been proposed to explain senescence programmes in diploid cells, including the induction of DNA damage responses, a senescence-associated secretory phenotype and epigenetic changes. Senescent cells display senescence-associated-β-galactosidase activity and undergo chromatin remodeling resulting in heterochromatinisation. Senescence is established by the pRb and p53 tumour suppressor networks. Senescence has been detected in in vitro cellular settings and in premalignant, but not malignant lesions in mice and humans expressing mutant oncogenes. Despite oncogene-induced senescence, which is believed to be a cancer initiating barrier and other tumour suppressive mechanisms, benign cancers may still develop into malignancies by bypassing senescence. Here, we summarise the functional genetic screens that have identified genes, uncovered pathways and characterised mechanisms involved in senescence evasion. These include cell cycle regulators and tumour suppressor pathways, DNA damage response pathways, epigenetic regulators, SASP components and noncoding RNAs.
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Affiliation(s)
- Eugenia Roupakia
- Laboratory of Biology, School of Medicine, Faculty of Health Sciences, University of Ioannina, Ioannina, 45100, Greece; Biomedical Research Division, Institute of Molecular Biology and Biotechnology, Foundation for Research and Technology, Ioannina, 45110, Greece
| | - Georgios S Markopoulos
- Laboratory of Biology, School of Medicine, Faculty of Health Sciences, University of Ioannina, Ioannina, 45100, Greece; Biomedical Research Division, Institute of Molecular Biology and Biotechnology, Foundation for Research and Technology, Ioannina, 45110, Greece
| | - Evangelos Kolettas
- Laboratory of Biology, School of Medicine, Faculty of Health Sciences, University of Ioannina, Ioannina, 45100, Greece; Biomedical Research Division, Institute of Molecular Biology and Biotechnology, Foundation for Research and Technology, Ioannina, 45110, Greece.
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67
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Targeting senescent cell clearance: An approach to delay aging and age-associated disorders. TRANSLATIONAL MEDICINE OF AGING 2021. [DOI: 10.1016/j.tma.2020.12.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
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68
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Li X, Yang K, Gao S, Zhao J, Liu G, Chen Y, Lin H, Zhao W, Hu Z, Xu N. Carnosine Stimulates Macrophage-Mediated Clearance of Senescent Skin Cells Through Activation of the AKT2 Signaling Pathway by CD36 and RAGE. Front Pharmacol 2020; 11:593832. [PMID: 33390976 PMCID: PMC7772392 DOI: 10.3389/fphar.2020.593832] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2020] [Accepted: 10/30/2020] [Indexed: 01/10/2023] Open
Abstract
Background: Macrophages can selectively recognize and eliminate senescent cells, but this function is impaired with age, resulting in excessive accumulation of senescent cells in the skin, which ultimately causes skin aging. Therefore, enhancing the immune surveillance ability of macrophages to clear senescent keratinocytes and fibroblasts from aging skin may be an effective skin rejuvenation strategy. Methods: In this study, a macrophage and senescent skin cell co-culture model was established whereby THP-1-derived macrophages and tert-butyl hydroxide-induced senescent skin cells (HaCaT and HFF-1) were grown in the same culture. Senescent skin cells were detected by the SPiDER-βgal assay, and the expression of secretory phenotype factors related to senescence was assayed by qPCR. The effect of carnosine on the number of SA-β-gal positive skin cells in the macrophage-senescent skin cell co-culture was evaluated and compared with that in the senescent skin cell monoculture. Results: Carnosine promoted macrophage-mediated elimination of senescent skin cells in the co-culture. Through the AKT2 signaling pathway, carnosine upregulated the expression of CD36 and receptors for advanced glycation end products and elevated the phagocytic capacity of the macrophages, thereby promoting the ability of the macrophages to eliminate the senescent skin cells. Conclusions: Carnosine could boost the immune surveillance ability of macrophages to clear senescent keratinocytes and fibroblasts in the macrophage-senescent skin cell co-culture by activating the AKT2 signaling pathway, suggesting the possibility of using carnosine as an agent to reverse skin aging.
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Affiliation(s)
- Xuenan Li
- College of Life and Environmental Sciences, Wenzhou University, Wenzhou, China
| | - Kaiye Yang
- Infinitus (China) Company Ltd., Guangzhou, China
| | - Shuang Gao
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, China
| | - Jungang Zhao
- College of Life and Environmental Sciences, Wenzhou University, Wenzhou, China
| | | | - Yu Chen
- College of Life and Environmental Sciences, Wenzhou University, Wenzhou, China
| | - Haojie Lin
- College of Life and Environmental Sciences, Wenzhou University, Wenzhou, China
| | - Wengang Zhao
- College of Life and Environmental Sciences, Wenzhou University, Wenzhou, China
| | - Zhenlin Hu
- College of Life and Environmental Sciences, Wenzhou University, Wenzhou, China
| | - Nuo Xu
- College of Life and Environmental Sciences, Wenzhou University, Wenzhou, China
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69
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Narzt MS, Pils V, Kremslehner C, Nagelreiter IM, Schosserer M, Bessonova E, Bayer A, Reifschneider R, Terlecki-Zaniewicz L, Waidhofer-Söllner P, Mildner M, Tschachler E, Cavinato M, Wedel S, Jansen-Dürr P, Nanic L, Rubelj I, El-Ghalbzouri A, Zoratto S, Marchetti-Deschmann M, Grillari J, Gruber F, Lämmermann I. Epilipidomics of Senescent Dermal Fibroblasts Identify Lysophosphatidylcholines as Pleiotropic Senescence-Associated Secretory Phenotype (SASP) Factors. J Invest Dermatol 2020; 141:993-1006.e15. [PMID: 33333126 DOI: 10.1016/j.jid.2020.11.020] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Revised: 11/15/2020] [Accepted: 11/16/2020] [Indexed: 02/06/2023]
Abstract
During aging, skin accumulates senescent cells. The transient presence of senescent cells, followed by their clearance by the immune system, is important in tissue repair and homeostasis. The persistence of senescent cells that evade clearance contributes to the age-related deterioration of the skin. The senescence-associated secretory phenotype of these cells contains immunomodulatory molecules that facilitate clearance but also promote chronic damage. Here, we investigated the epilipidome-the oxidative modifications of phospholipids-of senescent dermal fibroblasts, because these molecules are among the bioactive lipids that were recently identified as senescence-associated secretory phenotype factors. Using replicative- and stress- induced senescence protocols, we identified lysophosphatidylcholines as universally elevated in senescent fibroblasts, whereas other oxidized lipids displayed a pattern that was characteristic for the used senescence protocol. When we tested the lysophosphatidylcholines for senescence-associated secretory phenotype activity, we found that they elicit chemokine release in nonsenescent fibroblasts but also interfere with toll-like receptor 2 and 6/CD36 signaling and phagocytic capacity in macrophages. Using matrix-assisted laser desorption/ionization Fourier transform ion cyclotron resonance mass spectrometry imaging, we localized two lysophosphatidylcholine species in aged skin. This suggests that lysophospholipids may facilitate immune evasion and low-grade chronic inflammation in skin aging.
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Affiliation(s)
- Marie-Sophie Narzt
- Christian Doppler Laboratory on Biotechnology of Skin Aging, Vienna, Austria; Department of Dermatology, Medical University of Vienna, Vienna, Austria; Ludwig Boltzmann Institute for Experimental and Clinical Traumatology, AUVA Research Center, Linz and Vienna, Austria
| | - Vera Pils
- Department of Dermatology, Medical University of Vienna, Vienna, Austria; Department of Biotechnology, University of Natural Resources and Life Sciences Vienna, Vienna, Austria
| | - Christopher Kremslehner
- Christian Doppler Laboratory on Biotechnology of Skin Aging, Vienna, Austria; Department of Dermatology, Medical University of Vienna, Vienna, Austria; Christian Doppler Laboratory for Skin Multimodal Imaging of Aging and Senescence, Vienna, Austria
| | - Ionela-Mariana Nagelreiter
- Christian Doppler Laboratory on Biotechnology of Skin Aging, Vienna, Austria; Department of Dermatology, Medical University of Vienna, Vienna, Austria; Christian Doppler Laboratory for Skin Multimodal Imaging of Aging and Senescence, Vienna, Austria; Center for Brain Research, Department of Molecular Neurosciences, Medical University of Vienna, Vienna, Austria
| | - Markus Schosserer
- Department of Biotechnology, University of Natural Resources and Life Sciences Vienna, Vienna, Austria; Christian Doppler Laboratory for Skin Multimodal Imaging of Aging and Senescence, Vienna, Austria; Austrian Cluster for Tissue Regeneration, Vienna, Austria
| | - Emilia Bessonova
- Department of Biotechnology, University of Natural Resources and Life Sciences Vienna, Vienna, Austria
| | - Alina Bayer
- Department of Biotechnology, University of Natural Resources and Life Sciences Vienna, Vienna, Austria
| | - Raffaela Reifschneider
- Department of Biotechnology, University of Natural Resources and Life Sciences Vienna, Vienna, Austria
| | - Lucia Terlecki-Zaniewicz
- Christian Doppler Laboratory on Biotechnology of Skin Aging, Vienna, Austria; Department of Biotechnology, University of Natural Resources and Life Sciences Vienna, Vienna, Austria
| | - Petra Waidhofer-Söllner
- Institute of Immunology, Center of Pathophysiology, Infectiology and Immunology, Medical University of Vienna, Vienna, Austria
| | - Michael Mildner
- Department of Dermatology, Medical University of Vienna, Vienna, Austria
| | - Erwin Tschachler
- Department of Dermatology, Medical University of Vienna, Vienna, Austria
| | - Maria Cavinato
- Institute for Biomedical Aging Research, University of Innsbruck, Austria; Center for Molecular Biosciences Innsbruck, Innsbruck, Austria
| | - Sophia Wedel
- Institute for Biomedical Aging Research, University of Innsbruck, Austria; Center for Molecular Biosciences Innsbruck, Innsbruck, Austria
| | - Pidder Jansen-Dürr
- Institute for Biomedical Aging Research, University of Innsbruck, Austria; Center for Molecular Biosciences Innsbruck, Innsbruck, Austria
| | - Lucia Nanic
- Ruder Boskovic Institute, Division of Molecular Biology, Laboratory for Molecular and Cellular Biology, Zagreb, Croatia
| | - Ivica Rubelj
- Ruder Boskovic Institute, Division of Molecular Biology, Laboratory for Molecular and Cellular Biology, Zagreb, Croatia
| | | | - Samuele Zoratto
- Christian Doppler Laboratory for Skin Multimodal Imaging of Aging and Senescence, Vienna, Austria; Institute of Chemical Technologies and Analytics, TU Wien, Vienna, Austria
| | - Martina Marchetti-Deschmann
- Christian Doppler Laboratory for Skin Multimodal Imaging of Aging and Senescence, Vienna, Austria; Austrian Cluster for Tissue Regeneration, Vienna, Austria; Institute of Chemical Technologies and Analytics, TU Wien, Vienna, Austria
| | - Johannes Grillari
- Christian Doppler Laboratory on Biotechnology of Skin Aging, Vienna, Austria; Ludwig Boltzmann Institute for Experimental and Clinical Traumatology, AUVA Research Center, Linz and Vienna, Austria; Department of Biotechnology, University of Natural Resources and Life Sciences Vienna, Vienna, Austria; Austrian Cluster for Tissue Regeneration, Vienna, Austria
| | - Florian Gruber
- Christian Doppler Laboratory on Biotechnology of Skin Aging, Vienna, Austria; Department of Dermatology, Medical University of Vienna, Vienna, Austria; Christian Doppler Laboratory for Skin Multimodal Imaging of Aging and Senescence, Vienna, Austria.
| | - Ingo Lämmermann
- Christian Doppler Laboratory on Biotechnology of Skin Aging, Vienna, Austria; Department of Biotechnology, University of Natural Resources and Life Sciences Vienna, Vienna, Austria
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Ilie OD, Ciobica A, Riga S, Dhunna N, McKenna J, Mavroudis I, Doroftei B, Ciobanu AM, Riga D. Mini-Review on Lipofuscin and Aging: Focusing on The Molecular Interface, The Biological Recycling Mechanism, Oxidative Stress, and The Gut-Brain Axis Functionality. MEDICINA (KAUNAS, LITHUANIA) 2020; 56:E626. [PMID: 33228124 PMCID: PMC7699382 DOI: 10.3390/medicina56110626] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/17/2020] [Revised: 11/16/2020] [Accepted: 11/17/2020] [Indexed: 12/15/2022]
Abstract
Intra-lysosomal accumulation of the autofluorescent "residue" known as lipofuscin, which is found within postmitotic cells, remains controversial. Although it was considered a harmless hallmark of aging, its presence is detrimental as it continually accumulates. The latest evidence highlighted that lipofuscin strongly correlates with the excessive production of reactive oxygen species; however, despite this, lipofuscin cannot be removed by the biological recycling mechanisms. The antagonistic effects exerted at the DNA level culminate in a dysregulation of the cell cycle, by inducing a loss of the entire internal environment and abnormal gene(s) expression. Additionally, it appears that a crucial role in the production of reactive oxygen species can be attributed to gut microbiota, due to their ability to shape our behavior and neurodevelopment through their maintenance of the central nervous system.
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Affiliation(s)
- Ovidiu-Dumitru Ilie
- Department of Biology, Faculty of Biology, “Alexandru Ioan Cuza” University, Carol I Avenue, no 20A, 700505 Iasi, Romania
| | - Alin Ciobica
- Department of Biology, Faculty of Biology, “Alexandru Ioan Cuza” University, Carol I Avenue, no 20A, 700505 Iasi, Romania
- Academy of Romanian Scientists, Splaiul Independentei, no. 54, sector 5, 050094 Bucharest, Romania; (S.R.); (D.R.)
| | - Sorin Riga
- Academy of Romanian Scientists, Splaiul Independentei, no. 54, sector 5, 050094 Bucharest, Romania; (S.R.); (D.R.)
| | - Nitasha Dhunna
- Mid Yorkshire Hospitals NHS Trust, Pinderfields Hospital, Wakefield WF1 4DG, UK;
| | - Jack McKenna
- York Hospital, Wigginton road Clifton, York YO31 8HE, UK;
| | - Ioannis Mavroudis
- Leeds Teaching Hospitals NHS Trust, Great George St, Leeds LS1 3EX, UK;
- Laboratory of Neuropathology and Electron Microscopy, School of Medicine, Aristotle University of Thessaloniki, 541 24 Thessaloniki, Greece
| | - Bogdan Doroftei
- Faculty of Medicine, University of Medicine and Pharmacy “Grigore T. Popa”, University Street, no 16, 700115 Iasi, Romania;
| | - Adela-Magdalena Ciobanu
- Discipline of Psychiatry, Faculty of Medicine, “Carol Davila” University of Medicine and Pharmacy, Dionisie Lupu Street, no 37, 020021 Bucharest, Romania;
| | - Dan Riga
- Academy of Romanian Scientists, Splaiul Independentei, no. 54, sector 5, 050094 Bucharest, Romania; (S.R.); (D.R.)
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71
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Resnik SR, Egger A, Abdo Abujamra B, Jozic I. Clinical Implications of Cellular Senescence on Wound Healing. CURRENT DERMATOLOGY REPORTS 2020. [DOI: 10.1007/s13671-020-00320-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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72
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Polettini J, da Silva MG. Telomere-Related Disorders in Fetal Membranes Associated With Birth and Adverse Pregnancy Outcomes. Front Physiol 2020; 11:561771. [PMID: 33123024 PMCID: PMC7573552 DOI: 10.3389/fphys.2020.561771] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2020] [Accepted: 09/14/2020] [Indexed: 12/22/2022] Open
Abstract
Telomere disorders have been associated with aging-related diseases, including diabetes, vascular, and neurodegenerative diseases. The main consequence of altered telomere is the induction of the state of irreversible cell cycle arrest. Though several mechanisms responsible for the activation of senescence have been identified, it is still unclear how a cell is indeed induced to become irreversibly arrested. Most tissues in the body will experience senescence throughout its lifespan, but intrinsic and extrinsic stressors, such as chemicals, pollution, oxidative stress (OS), and inflammation accelerate the process. Pregnancy is a state of OS, as the higher metabolic demand of the growing fetus results in increased reactive oxygen species production. As a temporary organ in the mother, senescence in fetal membranes and placenta is expected and linked to term parturition (>37 weeks of gestation). However, a persistent, overwhelming, or premature OS affects placental antioxidant capacity, with consequent accumulation of OS causing damage to lipids, proteins, and DNA in the placental tissues. Therefore, senescence and its main inducer, telomere length (TL) reduction, have been associated with pregnancy complications, including stillbirth, preeclampsia, intrauterine growth restriction, and prematurity. Fetal membranes have a notable role in preterm births, which continue to be a major health issue associated with increased risk of neo and perinatal adverse outcomes and/or predisposition to disease in later life; however, the ability to mediate a delay in parturition during such cases is limited, because the pathophysiology of preterm births and physiological mechanisms of term births are not yet fully elucidated. Here, we review the current knowledge regarding the regulation of telomere-related senescence mechanisms in fetal membranes, highlighting the role of inflammation, methylation, and telomerase activity. Moreover, we present the evidences of TL reduction and senescence in gestational tissues by the time of term parturition. In conclusion, we verified that telomere regulation in fetal membranes requires a more complete understanding, in order to support the development of successful effective interventions of the molecular mechanisms that triggers parturition, including telomere signals, which may vary throughout placental tissues.
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Affiliation(s)
- Jossimara Polettini
- Universidade Federal da Fronteira Sul (UFFS), Programa de Pós Graduação em Ciências Biomédicas, Faculdade de Medicina, Campus Passo Fundo, Brazil
| | - Marcia Guimarães da Silva
- Universidade Estadual Paulista (UNESP), Faculdade de Medicina, Departamento de Patologia, Botucatu, Brazil
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73
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Venkatesh D, Stockwell BR, Prives C. p21 can be a barrier to ferroptosis independent of p53. Aging (Albany NY) 2020; 12:17800-17814. [PMID: 32979260 PMCID: PMC7585094 DOI: 10.18632/aging.103961] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2020] [Accepted: 08/03/2020] [Indexed: 01/24/2023]
Abstract
Traditionally, the p21 protein has been viewed as limiting cancer progression and promoting aging. In contrast, there are reports that p21 can enhance cancer survival and limit tissue damage, depending on the tissue of origin and type of stressor involved. Here, we provide evidence to support these latter two roles of p21 by exploring its ability to regulate ferroptosis. Ferroptosis is a form of cell death that is associated with certain degenerative diseases, some of which are aging-related. Our results reveal a correlation between p21 protein levels in cell lines that are resistant to ferroptosis (p21 high) versus cell lines that are sensitive and easily undergo ferroptosis (p21 low). We also show that p21 levels themselves are differentially regulated in response to ferroptosis in a p53-independent manner. Further, experimentally altering the abundance of p21 protein inverts the ferroptosis-sensitivity of both resistant and sensitive human cancer cell lines. Our data also indicate that the interaction of p21 with CDKs is crucial for its ability to restrict the progression of ferroptosis. While this study was performed in cancer cell lines, our results support the potential of p21 to aid in maintenance of healthy tissues by blocking the damage incurred due to ferroptosis.
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Affiliation(s)
- Divya Venkatesh
- Department of Biological Sciences, Columbia University, New York, NY 10027, USA
| | - Brent R. Stockwell
- Department of Biological Sciences, Columbia University, New York, NY 10027, USA,Department of Chemistry, Columbia University, New York, NY 10027, USA
| | - Carol Prives
- Department of Biological Sciences, Columbia University, New York, NY 10027, USA
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74
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Wasinger VC, Curnoe D, Boel C, Machin N, Goh HM. The Molecular Floodgates of Stress-Induced Senescence Reveal Translation, Signalling and Protein Activity Central to the Post-Mortem Proteome. Int J Mol Sci 2020; 21:ijms21176422. [PMID: 32899302 PMCID: PMC7504133 DOI: 10.3390/ijms21176422] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Revised: 08/27/2020] [Accepted: 08/31/2020] [Indexed: 11/16/2022] Open
Abstract
The transitioning of cells during the systemic demise of an organism is poorly understood. Here, we present evidence that organismal death is accompanied by a common and sequential molecular flood of stress-induced events that propagate the senescence phenotype, and this phenotype is preserved in the proteome after death. We demonstrate activation of “death” pathways involvement in diseases of ageing, with biochemical mechanisms mapping onto neurological damage, embryonic development, the inflammatory response, cardiac disease and ultimately cancer with increased significance. There is sufficient bioavailability of the building blocks required to support the continued translation, energy, and functional catalytic activity of proteins. Significant abundance changes occur in 1258 proteins across 1 to 720 h post-mortem of the 12-week-old mouse mandible. Protein abundance increases concord with enzyme activity, while mitochondrial dysfunction is evident with metabolic reprogramming. This study reveals differences in protein abundances which are akin to states of stress-induced premature senescence (SIPS). The control of these pathways is significant for a large number of biological scenarios. Understanding how these pathways function during the process of cellular death holds promise in generating novel solutions capable of overcoming disease complications, maintaining organ transplant viability and could influence the findings of proteomics through “deep-time” of individuals with no historically recorded cause of death.
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Affiliation(s)
- Valerie C. Wasinger
- Bioanalytical Mass Spectrometry Facility, Mark Wainwright Analytical Centre, University of New South Wales Sydney, Kensington, NSW 2052, Australia
- Palaeontology, Geobiology and Earth Archives Research Centre, University of New South Wales Sydney, Kensington, NSW 2052, Australia; (C.B.); (N.M.); (H.M.G.)
- Correspondence: (V.C.W.); (D.C.)
| | - Darren Curnoe
- Palaeontology, Geobiology and Earth Archives Research Centre, University of New South Wales Sydney, Kensington, NSW 2052, Australia; (C.B.); (N.M.); (H.M.G.)
- ARC Centre of Excellence for Australian Biodiversity and Heritage, University of New South Wales Sydney, Kensington, NSW 2052, Australia
- Correspondence: (V.C.W.); (D.C.)
| | - Ceridwen Boel
- Palaeontology, Geobiology and Earth Archives Research Centre, University of New South Wales Sydney, Kensington, NSW 2052, Australia; (C.B.); (N.M.); (H.M.G.)
- ARC Centre of Excellence for Australian Biodiversity and Heritage, University of New South Wales Sydney, Kensington, NSW 2052, Australia
| | - Naomi Machin
- Palaeontology, Geobiology and Earth Archives Research Centre, University of New South Wales Sydney, Kensington, NSW 2052, Australia; (C.B.); (N.M.); (H.M.G.)
| | - Hsiao Mei Goh
- Palaeontology, Geobiology and Earth Archives Research Centre, University of New South Wales Sydney, Kensington, NSW 2052, Australia; (C.B.); (N.M.); (H.M.G.)
- ARC Centre of Excellence for Australian Biodiversity and Heritage, University of New South Wales Sydney, Kensington, NSW 2052, Australia
- Centre for Global Archaeological Research, University Sains Malaysia, Penang 11800, Malaysia
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75
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Huang L, Zhao Z, Wen J, Ling W, Miao Y, Wu J. Cellular senescence: A pathogenic mechanism of pelvic organ prolapse (Review). Mol Med Rep 2020; 22:2155-2162. [PMID: 32705234 PMCID: PMC7411359 DOI: 10.3892/mmr.2020.11339] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2019] [Accepted: 06/22/2020] [Indexed: 02/05/2023] Open
Abstract
Pelvic organ prolapse (POP) is a common symptom of pelvic floor disorders which is characterized by the descent of the uterus, bladder or bowel from their normal anatomical position towards or through the vagina. Among the older population, the incidence of POP increases with age. It is becoming necessary to recognize that POP is a degenerative disease that is correlated with age. In recent years, studies have been performed to improve understanding of the cellular and molecular mechanisms concerning senescent fibroblasts in pelvic tissues, which contribute to the loss of structure supporting the pelvic organs. These mechanisms can be classified into gene and mitochondrial dysfunctions, intrinsic senescence processes, protein imbalance and alterations in stem cells. The present review provides an integrated overview of the current research and concepts regarding POP, in addition to discussing how fibroblasts can be targeted to evade the negative impact of senescence on POP. However, it is probable that other mechanisms that can also cause POP exist during cell senescence, which necessitates further research and provides new directions in the development of novel medical treatment, stem cell therapy and non-surgical interventions for POP.
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Affiliation(s)
- Liwei Huang
- Deep Underground Space Medical Center, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - Zhiwei Zhao
- West China School of Basic Medical Sciences and Forensic Medicine, Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - Jirui Wen
- West China School of Basic Medical Sciences and Forensic Medicine, Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - Wang Ling
- Deep Underground Space Medical Center, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - Yali Miao
- Department of Obstetrics and Gynecology, Key Laboratory of Birth Defects and Related Diseases of Women and Children of MOE, West China Second University Hospital, Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - Jiang Wu
- Deep Underground Space Medical Center, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, P.R. China
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76
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Mohamad Kamal NS, Safuan S, Shamsuddin S, Foroozandeh P. Aging of the cells: Insight into cellular senescence and detection Methods. Eur J Cell Biol 2020; 99:151108. [PMID: 32800277 DOI: 10.1016/j.ejcb.2020.151108] [Citation(s) in RCA: 104] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2020] [Accepted: 07/10/2020] [Indexed: 01/10/2023] Open
Abstract
Cellular theory of aging states that human aging is the result of cellular aging, in which an increasing proportion of cells reach senescence. Senescence, from the Latin word senex, means "growing old," is an irreversible growth arrest which occurs in response to damaging stimuli, such as DNA damage, telomere shortening, telomere dysfunction and oncogenic stress leading to suppression of potentially dysfunctional, transformed, or aged cells. Cellular senescence is characterized by irreversible cell cycle arrest, flattened and enlarged morphology, resistance to apoptosis, alteration in gene expression and chromatin structure, expression of senescence associated- β-galactosidase (SA-β-gal) and acquisition of senescence associated secretory phenotype (SASP). In this review paper, different types of cellular senescence including replicative senescence (RS) which occurs due to telomere shortening and stress induced premature senescence (SIPS) which occurs in response to different types of stress in cells, are discussed. Biomarkers of cellular senescence and senescent assays including BrdU incorporation assay, senescence associated- β-galactosidase (SA-β-gal) and senescence-associated heterochromatin foci assays to detect senescent cells are also addressed.
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Affiliation(s)
- Nor Shaheera Mohamad Kamal
- School of Health Sciences, Universiti Sains Malaysia Health Campus, 16150 Kubang Kerian, Kelantan, Malaysia
| | - Sabreena Safuan
- School of Health Sciences, Universiti Sains Malaysia Health Campus, 16150 Kubang Kerian, Kelantan, Malaysia
| | - Shaharum Shamsuddin
- School of Health Sciences, Universiti Sains Malaysia Health Campus, 16150 Kubang Kerian, Kelantan, Malaysia; USM-RIKEN International Centre for Ageing Science (URICAS), Universiti Sains Malaysia, 11800 Georgetown, Penang, Malaysia
| | - Parisa Foroozandeh
- USM-RIKEN International Centre for Ageing Science (URICAS), Universiti Sains Malaysia, 11800 Georgetown, Penang, Malaysia.
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77
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Song P, Zhao Q, Zou MH. Targeting senescent cells to attenuate cardiovascular disease progression. Ageing Res Rev 2020; 60:101072. [PMID: 32298812 DOI: 10.1016/j.arr.2020.101072] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2019] [Revised: 04/07/2020] [Accepted: 04/09/2020] [Indexed: 12/19/2022]
Abstract
Cardiovascular disease (CVD) is the most common disease to increase as life expectancy increases. Most high-profile pharmacological treatments for age-related CVD have led to inefficacious results, implying that novel approaches to treating these pathologies are needed. Emerging data have demonstrated that senescent cardiovascular cells, which are characterized by irreversible cell cycle arrest and a distinct senescence-associated secretory phenotype, accumulate in aged or diseased cardiovascular systems, suggesting that they may impair cardiovascular function. This review discusses the evidence implicating senescent cells in cardiovascular ageing, the onset and progression of CVD, and the molecular mechanisms underlying cardiovascular cell senescence. We also review eradication of senescent cardiovascular cells by small-molecule-drug-mediated apoptosis and immune cell-mediated efferocytosis and toxicity as promising and precisely targeted therapeutics for CVD prevention and treatment.
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78
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Alcalde-Estévez E, Asenjo-Bueno A, Sosa P, Olmos G, Plaza P, Caballero-Mora MÁ, Rodríguez-Puyol D, Ruíz-Torres MP, López-Ongil S. Endothelin-1 induces cellular senescence and fibrosis in cultured myoblasts. A potential mechanism of aging-related sarcopenia. Aging (Albany NY) 2020; 12:11200-11223. [PMID: 32572011 PMCID: PMC7343454 DOI: 10.18632/aging.103450] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2019] [Accepted: 05/20/2020] [Indexed: 02/06/2023]
Abstract
Endothelial dysfunction, with increased endothelin-1 (ET-1) synthesis, and sarcopenia, characterized by the loss of muscular mass and strength, are two aging–related conditions. However, a relationship between them has not been already established. The aim of this study was to determine whether ET-1 induces senescence and fibrosis in cultured murine myoblasts, which could be involved in the development of sarcopenia related to aging. For this purpose, myoblasts were incubated with ET-1 to assess cellular senescence, analyzed by senescence associated β-galactosidase activity and p16 expression; and fibrosis, assessed by fibronectin expression. ET-1 induced myoblast senescence and fibrosis through ETA receptor. The use of antioxidants and several antagonists revealed that ET-1 effect on senescence and fibrosis depended on ROS production and activation of PI3K-AKT-GSK pathway. To stress the in vivo relevance of these results, circulating ET-1, muscular strength, muscular fibrosis and p16 expression were measured in male C57Bl6 mice from 5-18-24-months-old. Old mice shown high levels of ET-1 correlated with muscular fibrosis, muscular p16 expression and loss of muscle strength. In conclusion, ET-1 promotes fibrosis and senescence in cultured myoblasts, similar results were found in old mice, suggesting a potential role for ET-1 in the development of sarcopenia related to aging.
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Affiliation(s)
- Elena Alcalde-Estévez
- Departamento Biología de Sistemas, Universidad de Alcalá, Alcalá de Henares, Madrid 28871, Spain
| | - Ana Asenjo-Bueno
- Unidad de Investigación de la Fundación para la Investigación Biomédica del Hospital Universitario Príncipe de Asturias, Alcalá de Henares, Madrid 28805, Spain
| | - Patricia Sosa
- Departamento Biología de Sistemas, Universidad de Alcalá, Alcalá de Henares, Madrid 28871, Spain
| | - Gemma Olmos
- Departamento Biología de Sistemas, Universidad de Alcalá, Alcalá de Henares, Madrid 28871, Spain.,Instituto Reina Sofía de Investigación Nefrológica (IRSIN) de la Fundación Renal Iñigo Álvarez de Toledo (FRIAT), Madrid 28003, Spain.,Area 3-Fisiología y Fisiopatología Renal y Vascular del IRYCIS, Madrid 28046, Spain
| | - Patricia Plaza
- Unidad de Investigación de la Fundación para la Investigación Biomédica del Hospital Universitario Príncipe de Asturias, Alcalá de Henares, Madrid 28805, Spain
| | | | - Diego Rodríguez-Puyol
- Instituto Reina Sofía de Investigación Nefrológica (IRSIN) de la Fundación Renal Iñigo Álvarez de Toledo (FRIAT), Madrid 28003, Spain.,Area 3-Fisiología y Fisiopatología Renal y Vascular del IRYCIS, Madrid 28046, Spain.,Servicio de Nefrología del Hospital Universitario Príncipe de Asturias, Alcalá de Henares, Madrid 28805, Spain
| | - María Piedad Ruíz-Torres
- Departamento Biología de Sistemas, Universidad de Alcalá, Alcalá de Henares, Madrid 28871, Spain.,Instituto Reina Sofía de Investigación Nefrológica (IRSIN) de la Fundación Renal Iñigo Álvarez de Toledo (FRIAT), Madrid 28003, Spain.,Area 3-Fisiología y Fisiopatología Renal y Vascular del IRYCIS, Madrid 28046, Spain
| | - Susana López-Ongil
- Unidad de Investigación de la Fundación para la Investigación Biomédica del Hospital Universitario Príncipe de Asturias, Alcalá de Henares, Madrid 28805, Spain.,Instituto Reina Sofía de Investigación Nefrológica (IRSIN) de la Fundación Renal Iñigo Álvarez de Toledo (FRIAT), Madrid 28003, Spain.,Area 3-Fisiología y Fisiopatología Renal y Vascular del IRYCIS, Madrid 28046, Spain
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Sharps MC, Baker BC, Guevara T, Bischof H, Jones RL, Greenwood SL, Heazell AEP. Increased placental macrophages and a pro-inflammatory profile in placentas and maternal serum in infants with a decreased growth rate in the third trimester of pregnancy. Am J Reprod Immunol 2020; 84:e13267. [PMID: 32421915 DOI: 10.1111/aji.13267] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2019] [Revised: 04/23/2020] [Accepted: 05/13/2020] [Indexed: 12/16/2022] Open
Abstract
PROBLEM There is growing evidence for the role of placental inflammation in the pathophysiology of pregnancy complications including fetal growth restriction (FGR). This study aimed to characterize the inflammatory profile in the maternal circulation and the placenta of infants who were growth restricted and those that were small for gestational age (SGA). METHOD OF STUDY Placental villous tissue and maternal serum were obtained from pregnancies where infants were SGA at birth or who had a decreasing growth rate (≥25 centiles) across the third trimester. Immunohistochemical and histological analyses of placental samples were conducted for macrophage number, alongside vascular and cell turnover analysis. Inflammatory profile was analyzed in maternal and placental compartments via ELISAs and multiplex assays. RESULTS There were significantly more CD163+ macrophages in placentas of infants with a decreased growth rate compared to controls, but not in SGA infants (median 8.6/ nuclei vs 3.8 and 2.9, P = .008 and P = .003, respectively). Uric acid (P = .0007) and IL-8 (P = .0008) were increased in placentas, and S100A8 (P < .0002) was increased in maternal serum of infants with decreased growth rate. No changes in the maternal serum or placental lysates of SGA infants were observed. CONCLUSION The evidence of an altered inflammatory profile in infants with a decreasing growth rate, but not in those that were born SGA, provides further evidence that inflammation plays a role in true FGR. It remains unclear whether the increased placental macrophages occur as a direct result, or as a consequence of the pro-inflammatory environment observed in fetal growth restriction.
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Affiliation(s)
- Megan C Sharps
- Division of Developmental Biology & Medicine, Faculty of Biology, Medicine & Health, Tommy's Maternal and Fetal Health Research Centre, 5th Floor St. Mary's Hospital, University of Manchester, Manchester, UK
| | - Bernadette C Baker
- Division of Developmental Biology & Medicine, Faculty of Biology, Medicine & Health, Tommy's Maternal and Fetal Health Research Centre, 5th Floor St. Mary's Hospital, University of Manchester, Manchester, UK
| | - Tatiana Guevara
- Division of Developmental Biology & Medicine, Faculty of Biology, Medicine & Health, Tommy's Maternal and Fetal Health Research Centre, 5th Floor St. Mary's Hospital, University of Manchester, Manchester, UK
| | - Helen Bischof
- Division of Developmental Biology & Medicine, Faculty of Biology, Medicine & Health, Tommy's Maternal and Fetal Health Research Centre, 5th Floor St. Mary's Hospital, University of Manchester, Manchester, UK
| | - Rebecca L Jones
- Division of Developmental Biology & Medicine, Faculty of Biology, Medicine & Health, Tommy's Maternal and Fetal Health Research Centre, 5th Floor St. Mary's Hospital, University of Manchester, Manchester, UK
| | - Susan L Greenwood
- Division of Developmental Biology & Medicine, Faculty of Biology, Medicine & Health, Tommy's Maternal and Fetal Health Research Centre, 5th Floor St. Mary's Hospital, University of Manchester, Manchester, UK
| | - Alexander E P Heazell
- Division of Developmental Biology & Medicine, Faculty of Biology, Medicine & Health, Tommy's Maternal and Fetal Health Research Centre, 5th Floor St. Mary's Hospital, University of Manchester, Manchester, UK.,Manchester Academic Health Science Centre, St. Mary's Hospital, Manchester University NHS Foundation Trust, Manchester, UK
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80
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Mavrogonatou E, Pratsinis H, Kletsas D. The role of senescence in cancer development. Semin Cancer Biol 2020; 62:182-191. [DOI: 10.1016/j.semcancer.2019.06.018] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2019] [Revised: 06/24/2019] [Accepted: 06/27/2019] [Indexed: 02/07/2023]
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Variation of 4 MV X-ray dose rate strongly impacts biological response both in vitro and in vivo. Sci Rep 2020; 10:7021. [PMID: 32341396 PMCID: PMC7184727 DOI: 10.1038/s41598-020-64067-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2019] [Accepted: 04/10/2020] [Indexed: 01/10/2023] Open
Abstract
Whereas an RBE > 1 is described for very low-energy X-ray beams (in the range of 25–50 kV), there is a consensus that the RBE of X-rays (from 0.1 to 3 MeV) is equal to 1, whatever the energy or dose rate of the beam. Comparisons of X-ray beam dose rates are scarce even though these beams are widely used in medical diagnosis or radiotherapy. By using two dose rates (0.63 and 2.5 Gy.min−1) of high-energy X-rays on normal endothelial cells (HUVECs), we have studied the clonogenic assay, but also viability/mortality, cell cycle analysis and measured cellular senescence by flow cytometry, and have performed gene analysis on custom arrays. In order to consolidate these data, we performed localized irradiation of exteriorized small intestine at 0.63 and 2.5 Gy.min−1. Interestingly, in vivo validation has shown a significantly higher loss of weight at the higher dose when irradiating to 19 Gy a small fragment of exteriorized small intestine of C57Bl6J mice. Nevertheless, no significant differences were observed in lesioned scores between the two dose rates, while bordering epithelium staining indicated twofold greater severe damage at 2.5 Gy.min−1 compared to 0.63 Gy.min−1 at one week post-irradiation. Taken together, these experiments systematically show that the relative biological effectiveness of photons is different from 1 when varying the dose rate of high-energy X-rays. Moreover, these results strongly suggest that, in support of clonogenic assay, multiparametric analysis should be considered to provide an accurate evaluation of the outcome of irradiated cells.
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82
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Khor ES, Wong PF. The roles of MTOR and miRNAs in endothelial cell senescence. Biogerontology 2020; 21:517-530. [PMID: 32246301 DOI: 10.1007/s10522-020-09876-w] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2020] [Accepted: 03/30/2020] [Indexed: 12/11/2022]
Abstract
Accumulation of senescent cells in vascular endothelium is known to contribute to vascular aging and increases the risk of developing cardiovascular diseases. The involvement of classical pathways such as p53/p21 and p16/pRB in cellular senescence are well described but there are emerging evidence supporting the increasingly important role of mammalian target of rapamycin (MTOR) as driver of cellular senescence via these pathways or other effector molecules. MicroRNAs (miRNAs) are a highly conserved group of small non-coding RNAs (18-25 nucleotides), instrumental in modulating the expression of target genes associated with various biological and cellular processes including cellular senescence. The inhibition of MTOR activity is predominantly linked to cellular senescence blunting and prolonged lifespan in model organisms. To date, known miRNAs regulating MTOR in endothelial cell senescence remain limited. Herein, this review discusses the roles of MTOR and MTOR-associated miRNAs in regulating endothelial cell senescence, including the crosstalk between MTOR Complex 1 (MTORC1) and cell cycle pathways and the emerging role of MTORC2 in cellular senescence. New insights on how MTOR and miRNAs coordinate underlying molecular mechanisms of endothelial senescence will provide deeper understanding and clarity to the complexity of the regulation of cellular senescence.
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Affiliation(s)
- Eng-Soon Khor
- Department of Pharmacology, Faculty of Medicine, University of Malaya, 50603, Kuala Lumpur, Malaysia
| | - Pooi-Fong Wong
- Department of Pharmacology, Faculty of Medicine, University of Malaya, 50603, Kuala Lumpur, Malaysia.
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83
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Levi N, Papismadov N, Solomonov I, Sagi I, Krizhanovsky V. The ECM path of senescence in aging: components and modifiers. FEBS J 2020; 287:2636-2646. [PMID: 32145148 DOI: 10.1111/febs.15282] [Citation(s) in RCA: 102] [Impact Index Per Article: 25.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2019] [Revised: 12/25/2019] [Accepted: 03/04/2020] [Indexed: 11/29/2022]
Abstract
The extracellular matrix (ECM) is a key noncellular component in all organs and tissues. It is composed of a large number of proteins including collagens, glycoproteins (GP), and ECM-associated proteins, which show diversity of biochemical and biophysical functions. The ECM is dynamic both in normal physiology of tissues and under pathological conditions. One cellular phenomenon associated with changes in both ECM components expression and in ECM remodeling enzymes secretion is cellular senescence. It represents a stable state form of cell cycle arrest induced in proliferating cells by various forms of stress. Short-term induction of senescence is essential for tumor suppression and tissue repair. However, long-term presence of senescent cells in tissues may have a detrimental role in promoting tissue damage and aging. Up to date, there is insufficient knowledge about the interplay between the ECM and senescence cells. Since changes in the ECM occur in many physiological and pathological conditions in which senescent cells are present, a better understanding of ECM-senescence interactions is necessary. Here, we will review the functions of the different ECM components and will discuss the current knowledge about their regulation in senescent cells and their influence on the senescence state.
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Affiliation(s)
- Naama Levi
- Department of Molecular Cell Biology, Weizmann Institute of Science, Rehovot, Israel
| | - Nurit Papismadov
- Department of Molecular Cell Biology, Weizmann Institute of Science, Rehovot, Israel
| | - Inna Solomonov
- Biological Regulation, Weizmann Institute of Science, Rehovot, Israel
| | - Irit Sagi
- Biological Regulation, Weizmann Institute of Science, Rehovot, Israel
| | - Valery Krizhanovsky
- Department of Molecular Cell Biology, Weizmann Institute of Science, Rehovot, Israel
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84
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Immune Clearance of Senescent Cells to Combat Ageing and Chronic Diseases. Cells 2020; 9:cells9030671. [PMID: 32164335 PMCID: PMC7140645 DOI: 10.3390/cells9030671] [Citation(s) in RCA: 91] [Impact Index Per Article: 22.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2020] [Revised: 02/28/2020] [Accepted: 03/05/2020] [Indexed: 12/19/2022] Open
Abstract
Senescent cells are generally characterized by permanent cell cycle arrest, metabolic alteration and activation, and apoptotic resistance in multiple organs due to various stressors. Excessive accumulation of senescent cells in numerous tissues leads to multiple chronic diseases, tissue dysfunction, age-related diseases and organ ageing. Immune cells can remove senescent cells. Immunaging or impaired innate and adaptive immune responses by senescent cells result in persistent accumulation of various senescent cells. Although senolytics-drugs that selectively remove senescent cells by inducing their apoptosis-are recent hot topics and are making significant research progress, senescence immunotherapies using immune cell-mediated clearance of senescent cells are emerging and promising strategies to fight ageing and multiple chronic diseases. This short review provides an overview of the research progress to date concerning senescent cell-caused chronic diseases and tissue ageing, as well as the regulation of senescence by small-molecule drugs in clinical trials and different roles and regulation of immune cells in the elimination of senescent cells. Mounting evidence indicates that immunotherapy targeting senescent cells combats ageing and chronic diseases and subsequently extends the healthy lifespan.
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85
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The Emerging Role of Senescence in Ocular Disease. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2020; 2020:2583601. [PMID: 32215170 PMCID: PMC7085400 DOI: 10.1155/2020/2583601] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Accepted: 02/14/2020] [Indexed: 02/07/2023]
Abstract
Cellular senescence is a state of irreversible cell cycle arrest in response to an array of cellular stresses. An important role for senescence has been shown for a number of pathophysiological conditions that include cardiovascular disease, pulmonary fibrosis, and diseases of the skin. However, whether senescence contributes to the progression of age-related macular degeneration (AMD) has not been studied in detail so far and the present review describes the recent research on this topic. We present an overview of the types of senescence, pathways of senescence, senescence-associated secretory phenotype (SASP), the role of mitochondria, and their functional implications along with antisenescent therapies. As a central mechanism, senescent cells can impact the surrounding tissue microenvironment via the secretion of a pool of bioactive molecules, termed the SASP. An updated summary of a number of new members of the ever-growing SASP family is presented. Further, we introduce the significance of mechanisms by which mitochondria may participate in the development of cellular senescence. Emerging evidence shows that extracellular vesicles (EVs) are important mediators of the effects of senescent cells on their microenvironment. Based on recent studies, there is reasonable evidence that senescence could be a modifiable factor, and hence, it may be possible to delay age-related diseases by modulating basic aging mechanisms using SASP inhibitors/senolytic drugs. Thus, antisenescent therapies in aging and age-related diseases appear to have a promising potential.
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86
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Cavallazzi RS, Polivka BJ, Beatty BL, Antimisiaris DE, Gopalraj RK, Vickers-Smith RA, Folz RJ. Current Bronchodilator Responsiveness Criteria Underestimate Asthma in Older Adults. Respir Care 2020; 65:1104-1111. [PMID: 32071132 DOI: 10.4187/respcare.07132] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
BACKGROUND Asthma is common in older adults and is confirmed by demonstration of variable expiratory air-flow limitations, typically evaluated by spirometric assessment of bronchodilator responsiveness. However, many patients with clinically suspected asthma and documented air-flow obstruction do not exhibit a post-bronchodilator response that meets or exceeds current established guidelines. We investigated if extending the time from bronchodilator administration to assessment of bronchodilator response increases the yield of spirometry for the diagnosis of asthma in older adults. METHODS This was a cross-sectional study. The subjects were non-smokers, ≥ 60 y old, and with suspected asthma. Subjects were characterized as (1) those with a positive bronchodilator response on the 30-min post-bronchodilator spirometry, (2) those with a positive bronchodilator response on the 60-min post-bronchodilator spirometry, and (3) those without a positive bronchodilator response but with a positive methacholine challenge test. Factors associated with a late response to bronchodilator were evaluated by using bivariate analysis and by multivariate analysis by using a logistic regression model. RESULTS This study enrolled 165 subjects. Of these, 81 (49.1%) had a positive bronchodilator response on 30-min post-bronchodilator spirometry; 25 (15.2%) had a positive bronchodilator response on the 1-h post-bronchodilator spirometry; and 59 (35.8%) had no positive bronchodilator response but had a positive methacholine challenge test. On multivariable regression analysis, those with a higher baseline percentage of predicted FEV1, higher scores on a standard asthma control test, and wheezing and/or cough after exercise were more likely to either have a late bronchodilator response or no bronchodilator response. CONCLUSIONS Our study showed that a late positive response to bronchodilator use was more common than previously presumed in older subjects with suspected asthma. Pulmonary function testing laboratories should consider routinely reassessing spirometry at 1 h after bronchodilator use if the earlier assessment did not reveal a significant response.
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Affiliation(s)
- Rodrigo S Cavallazzi
- Division of Pulmonary, Critical Care Medicine, and Sleep Disorders University of Louisville, Louisville, Kentucky
| | | | - Bryan L Beatty
- Division of Pulmonary, Critical Care Medicine, and Sleep Disorders University of Louisville, Louisville, Kentucky
| | - Demetra E Antimisiaris
- Department of Health Management & Systems Science, University of Louisville, Louisville, Kentucky
| | | | | | - Rodney J Folz
- Division of Pulmonary, Critical Care, and Sleep Medicine University Hospital Cleveland Medical Center and Case Western Reserve University
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Implications of Oxidative Stress and Cellular Senescence in Age-Related Thymus Involution. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2020; 2020:7986071. [PMID: 32089780 PMCID: PMC7025075 DOI: 10.1155/2020/7986071] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/15/2019] [Revised: 01/20/2020] [Accepted: 01/23/2020] [Indexed: 02/07/2023]
Abstract
The human thymus is a primary lymphoepithelial organ which supports the production of self-tolerant T cells with competent and regulatory functions. Paradoxically, despite the crucial role that it exerts in T cell-mediated immunity and prevention of systemic autoimmunity, the thymus is the first organ of the body that exhibits age-associated degeneration/regression, termed “thymic involution.” A hallmark of this early phenomenon is a progressive decline of thymic mass as well as a decreased output of naïve T cells, thus resulting in impaired immune response. Importantly, thymic involution has been recently linked with cellular senescence which is a stress response induced by various stimuli. Accumulation of senescent cells in tissues has been implicated in aging and a plethora of age-related diseases. In addition, several lines of evidence indicate that oxidative stress, a well-established trigger of senescence, is also involved in thymic involution, thus highlighting a possible interplay between oxidative stress, senescence, and thymic involution.
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88
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Stereotactic Lung Irradiation in Mice Promotes Long-Term Senescence and Lung Injury. Int J Radiat Oncol Biol Phys 2020; 106:1017-1027. [PMID: 31987976 DOI: 10.1016/j.ijrobp.2019.12.039] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2019] [Revised: 12/19/2019] [Accepted: 12/30/2019] [Indexed: 12/11/2022]
Abstract
PURPOSE Lung cancer will be treated more frequently using stereotactic body radiation therapy, and preclinical research to model long-term toxicity of ablative doses of radiation is crucial. Stereotactic lung irradiation of a small volume can induce radiation pneumonitis and fibrosis in normal tissues. METHODS AND MATERIALS Senescence has been reported to contribute to lung fibrosis, and we investigated in vivo the effects of ablative doses of ionizing radiation on senescence-associated processes. The left lung of p16INK4a-LUC knock-in mice was exposed to a single dose or fractionated radiation doses in a millimetric volume using a small animal radiation research platform. RESULTS Single or fractionated ablative radiation induces acute and very long-term p16INK4a activation in the irradiated lung target volume associated with lung injury. We observed a panel of heterogeneous senescent cells including pneumocytes, macrophages, and endothelial cells that accumulated around the radiation-induced lung focal lesion, suggesting that different senescent cell types may contribute to radiation injury. CONCLUSIONS This work provides important information on the long-term effects of ablative radiation doses in the normal lung and strongly suggests that stress-induced senescence is involved in stereotactic body radiation therapy-induced late fibrosis.
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Silencing of AURKA augments the antitumor efficacy of the AURKA inhibitor MLN8237 on neuroblastoma cells. Cancer Cell Int 2020; 20:9. [PMID: 31920463 PMCID: PMC6947931 DOI: 10.1186/s12935-019-1072-y] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2019] [Accepted: 12/13/2019] [Indexed: 12/30/2022] Open
Abstract
Background Aurora kinase A (AURKA) has been implicated in the regulation of cell cycle progression, mitosis and a key number of oncogenic signaling pathways in various malignancies including neuroblastoma. Small molecule inhibitors of AURKA have shown potential, but still not as good as expected effects in clinical trials. Little is known about this underlying mechanism. Here, we evaluated the inhibitory effects of AURKA inhibitor MLN8237 on neuroblastoma cells to understand the potential mechanisms responsible for tumor therapy. Methods MLN8237 treatment on neuroblastoma cell line IMR32 was done and in vivo inhibitory effects were investigated using tumor xenograft model. Cellular senescence was evaluated by senescence-associated β-gal Staining assay. Flow cytometry was used to tested cell cycle arrest and cell apoptosis. Senescence-associated signal pathways were detected by western blot. CD133 microbeads and microsphere formation were used to separate and enrich CD133+ cells. AURKA small interfering RNA transfection was carried to downregulate AURKA level. Finally, the combination of MLN8237 treatment with AURKA small interfering RNA transfection were adopted to evaluate the inhibitory effect on neuroblastoma cells. Results We demonstrate that MLN8237, an inhibitor of AURKA, induces the neuroblastoma cell line IMR32 into cellular senescence and G2/M cell phase arrest. Inactivation of AURKA results in MYCN destabilization and inhibits cell growth in vitro and in a mouse model. Although MLN8237 inhibits AURKA kinase activity, it has almost no inhibitory effect on the AURKA protein level. By contrast, MLN8237 treatment leads to abnormal high expression of AURKA in vitro and in vivo. Knockdown of AURKA reduces cell survival. The combination of MLN8237 with AURKA small interfering RNA results in more profound inhibitory effects on neuroblastoma cell growth. Moreover, MLN8237 treatment followed by AURKA siRNA forces senescent cells into apoptosis via suppression of the Akt/Stat3 pathway. Conclusions The effect of AURKA-targeted inhibition of tumor growth plays roles in both the inactivation of AURKA activity and the decrease in the AURKA protein expression level.
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90
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Jesel L, Abbas M, Park SH, Matsushita K, Kindo M, Hasan H, Auger C, Sato C, Ohlmann P, Mazzucotelli JP, Toti F, Kauffenstein G, Schini-Kerth V, Morel O. Atrial Fibrillation Progression Is Associated with Cell Senescence Burden as Determined by p53 and p16 Expression. J Clin Med 2019; 9:jcm9010036. [PMID: 31878008 PMCID: PMC7019631 DOI: 10.3390/jcm9010036] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2019] [Revised: 12/07/2019] [Accepted: 12/19/2019] [Indexed: 01/05/2023] Open
Abstract
Background: Whilst the link between aging and thrombogenicity in atrial fibrillation (AF) is well established, the cellular underlying mechanisms are unknown. In AF, the role of senescence in tissue remodeling and prothrombotic state remains unclear. Aims: We investigated the link between AF and senescence by comparing the expression of senescence markers (p53 and p16), with prothrombotic and inflammatory proteins in right atrial appendages from patients in AF and sinus rhythm (SR). Methods: The right atrial appendages of 147 patients undergoing open-heart surgery were harvested. Twenty-one non-valvular AF patients, including paroxysmal (PAF) or permanent AF (PmAF), were matched with 21 SR patients according to CHA2DS2-VASc score and treatment. Protein expression was assessed by tissue lysates Western blot analysis. Results: The expression of p53, p16, and tissue factor (TF) was significantly increased in AF compared to SR (0.91 ± 0.31 vs. 0.58 ± 0.31, p = 0.001; 0.76 ± 0.32 vs. 0.35 ± 0.18, p = 0.0001; 0.88 ± 0.32 vs. 0.68 ± 0.29, p = 0.045, respectively). Expression of endothelial NO synthase (eNOS) was lower in AF (0.25 ± 0.15 vs. 0.35 ± 0.12, p = 0.023). There was a stepwise increase of p53, p16, TF, matrix metalloproteinase-9, and an eNOS progressive decrease between SR, PAF, and PmAF. AF was the only predictive factor of p53 and p16 elevation in multivariate analysis. Conclusions: The study brought new evidence indicating that AF progression is strongly related to human atrial senescence burden and points at a link between senescence, thrombogenicity, endothelial dysfunction and atrial remodeling.
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Affiliation(s)
- Laurence Jesel
- INSERM UMR 1260–Regenerative Nanomedecine, FMTS, Université de Strasbourg-Faculté de Pharmacie, 67401 Illkirch-Graffenstaden, France; (L.J.); (M.A.); (S.-H.P.); (K.M.); (H.H.); (C.A.); (C.S.); (F.T.); (G.K.)
- Hôpitaux Universitaires de Strasbourg, Pôle d’Activité Médico-Chirurgicale Cardio-Vasculaire, 67000 Strasbourg, France; (M.K.); (P.O.); (J.-P.M.)
| | - Malak Abbas
- INSERM UMR 1260–Regenerative Nanomedecine, FMTS, Université de Strasbourg-Faculté de Pharmacie, 67401 Illkirch-Graffenstaden, France; (L.J.); (M.A.); (S.-H.P.); (K.M.); (H.H.); (C.A.); (C.S.); (F.T.); (G.K.)
| | - Sin-Hee Park
- INSERM UMR 1260–Regenerative Nanomedecine, FMTS, Université de Strasbourg-Faculté de Pharmacie, 67401 Illkirch-Graffenstaden, France; (L.J.); (M.A.); (S.-H.P.); (K.M.); (H.H.); (C.A.); (C.S.); (F.T.); (G.K.)
| | - Kensuke Matsushita
- INSERM UMR 1260–Regenerative Nanomedecine, FMTS, Université de Strasbourg-Faculté de Pharmacie, 67401 Illkirch-Graffenstaden, France; (L.J.); (M.A.); (S.-H.P.); (K.M.); (H.H.); (C.A.); (C.S.); (F.T.); (G.K.)
- Hôpitaux Universitaires de Strasbourg, Pôle d’Activité Médico-Chirurgicale Cardio-Vasculaire, 67000 Strasbourg, France; (M.K.); (P.O.); (J.-P.M.)
| | - Michel Kindo
- Hôpitaux Universitaires de Strasbourg, Pôle d’Activité Médico-Chirurgicale Cardio-Vasculaire, 67000 Strasbourg, France; (M.K.); (P.O.); (J.-P.M.)
| | - Hira Hasan
- INSERM UMR 1260–Regenerative Nanomedecine, FMTS, Université de Strasbourg-Faculté de Pharmacie, 67401 Illkirch-Graffenstaden, France; (L.J.); (M.A.); (S.-H.P.); (K.M.); (H.H.); (C.A.); (C.S.); (F.T.); (G.K.)
| | - Cyril Auger
- INSERM UMR 1260–Regenerative Nanomedecine, FMTS, Université de Strasbourg-Faculté de Pharmacie, 67401 Illkirch-Graffenstaden, France; (L.J.); (M.A.); (S.-H.P.); (K.M.); (H.H.); (C.A.); (C.S.); (F.T.); (G.K.)
| | - Chisato Sato
- INSERM UMR 1260–Regenerative Nanomedecine, FMTS, Université de Strasbourg-Faculté de Pharmacie, 67401 Illkirch-Graffenstaden, France; (L.J.); (M.A.); (S.-H.P.); (K.M.); (H.H.); (C.A.); (C.S.); (F.T.); (G.K.)
- Hôpitaux Universitaires de Strasbourg, Pôle d’Activité Médico-Chirurgicale Cardio-Vasculaire, 67000 Strasbourg, France; (M.K.); (P.O.); (J.-P.M.)
| | - Patrick Ohlmann
- Hôpitaux Universitaires de Strasbourg, Pôle d’Activité Médico-Chirurgicale Cardio-Vasculaire, 67000 Strasbourg, France; (M.K.); (P.O.); (J.-P.M.)
| | - Jean-Philippe Mazzucotelli
- Hôpitaux Universitaires de Strasbourg, Pôle d’Activité Médico-Chirurgicale Cardio-Vasculaire, 67000 Strasbourg, France; (M.K.); (P.O.); (J.-P.M.)
| | - Florence Toti
- INSERM UMR 1260–Regenerative Nanomedecine, FMTS, Université de Strasbourg-Faculté de Pharmacie, 67401 Illkirch-Graffenstaden, France; (L.J.); (M.A.); (S.-H.P.); (K.M.); (H.H.); (C.A.); (C.S.); (F.T.); (G.K.)
| | - Gilles Kauffenstein
- INSERM UMR 1260–Regenerative Nanomedecine, FMTS, Université de Strasbourg-Faculté de Pharmacie, 67401 Illkirch-Graffenstaden, France; (L.J.); (M.A.); (S.-H.P.); (K.M.); (H.H.); (C.A.); (C.S.); (F.T.); (G.K.)
| | - Valérie Schini-Kerth
- INSERM UMR 1260–Regenerative Nanomedecine, FMTS, Université de Strasbourg-Faculté de Pharmacie, 67401 Illkirch-Graffenstaden, France; (L.J.); (M.A.); (S.-H.P.); (K.M.); (H.H.); (C.A.); (C.S.); (F.T.); (G.K.)
- Correspondence: (V.S.-K.); (O.M.); Tel.: +33-368-854-127 (V.S.-K.); +33-369-550-948 (O.M.); Fax: +33-368-854-313 (V.S.-K.); +33-369-551-788 (O.M.)
| | - Olivier Morel
- INSERM UMR 1260–Regenerative Nanomedecine, FMTS, Université de Strasbourg-Faculté de Pharmacie, 67401 Illkirch-Graffenstaden, France; (L.J.); (M.A.); (S.-H.P.); (K.M.); (H.H.); (C.A.); (C.S.); (F.T.); (G.K.)
- Hôpitaux Universitaires de Strasbourg, Pôle d’Activité Médico-Chirurgicale Cardio-Vasculaire, 67000 Strasbourg, France; (M.K.); (P.O.); (J.-P.M.)
- Correspondence: (V.S.-K.); (O.M.); Tel.: +33-368-854-127 (V.S.-K.); +33-369-550-948 (O.M.); Fax: +33-368-854-313 (V.S.-K.); +33-369-551-788 (O.M.)
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91
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Gruber F, Kremslehner C, Eckhart L, Tschachler E. Cell aging and cellular senescence in skin aging - Recent advances in fibroblast and keratinocyte biology. Exp Gerontol 2019; 130:110780. [PMID: 31794850 DOI: 10.1016/j.exger.2019.110780] [Citation(s) in RCA: 84] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2019] [Revised: 11/07/2019] [Accepted: 11/10/2019] [Indexed: 12/17/2022]
Abstract
The aging of the skin is the most visible and obvious manifestation of organismal aging and may serve as a predictor of life expectancy and health. It is, however, also the human desire for long-lasting beauty that further raises interests in the topic, and thus considerable means and efforts are put into studying the mechanisms of skin aging in basic and applied research. Both medical und non-medical interests are of benefit for skin research in general because the results from these studies help to deepen our understanding of the complex molecular, biological, cell signaling, developmental and immunological processes in this organ. In fact, the skin is an ideal organ to observe and analyze the impact of extrinsic and intrinsic drivers of aging. Within the past five years technological advances like lineage tracing of cells in model organisms, intra-vital microscopy, nucleic acid sequencing at the single cell level, and high resolution mass spectrometry have allowed to study aging and senescence of individual skin cells within the tissue context, their signaling and communication, and to derive new hypotheses for experimental studies in vitro. In this short review we will discuss very recent developments that promise to extend the existing knowledge on cell aging and senescence of dermal fibroblasts and epidermal keratinocytes in skin aging.
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Affiliation(s)
- Florian Gruber
- Division for Biology and Pathobiology of the Skin, Department of Dermatology, Medical University of Vienna, Vienna, Austria; Christian Doppler Laboratory for the Biotechnology of Skin Aging, Vienna, Austria.
| | - Christopher Kremslehner
- Division for Biology and Pathobiology of the Skin, Department of Dermatology, Medical University of Vienna, Vienna, Austria; Christian Doppler Laboratory for the Biotechnology of Skin Aging, Vienna, Austria
| | - Leopold Eckhart
- Division for Biology and Pathobiology of the Skin, Department of Dermatology, Medical University of Vienna, Vienna, Austria
| | - Erwin Tschachler
- Division for Biology and Pathobiology of the Skin, Department of Dermatology, Medical University of Vienna, Vienna, Austria
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92
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Sun X, Nkennor B, Mastikhina O, Soon K, Nunes SS. Endothelium-mediated contributions to fibrosis. Semin Cell Dev Biol 2019; 101:78-86. [PMID: 31791693 DOI: 10.1016/j.semcdb.2019.10.015] [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: 09/27/2019] [Revised: 10/25/2019] [Accepted: 10/30/2019] [Indexed: 02/07/2023]
Abstract
Fibrosis, characterized by abnormal and excessive deposition of extracellular matrix, results in compromised tissue and organ structure. This can lead to reduced organ function and eventual failure. Although activated fibroblasts, called myofibroblasts, are considered the central players in fibrosis, the contribution of endothelial cells to the inception and progression of fibrosis has become increasingly recognized. Endothelial cells can contribute to fibrosis by acting as a source of myofibroblasts via endothelial-mesenchymal transition (EndoMT), or by becoming senescent, by secretion of profibrotic mediators and pro-inflammatory cytokines, chemokines and exosomes, promoting the recruitment of immune cells, and by participating in vascular rarefaction and decreased angiogenesis. In this review, we provide an overview of the different aspects of fibrosis in which endothelial cells have been implicated.
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Affiliation(s)
- Xuetao Sun
- University Health Network, Toronto General Hospital Research Institute, 101 College St., Canada
| | - Blessing Nkennor
- University Health Network, Toronto General Hospital Research Institute, 101 College St., Canada; Department of Biological Sciences, University of Toronto Scarborough, Canada
| | - Olya Mastikhina
- University Health Network, Toronto General Hospital Research Institute, 101 College St., Canada; Institute of Biomaterials and Biomedical Engineering, University of Toronto, Canada
| | - Kayla Soon
- University Health Network, Toronto General Hospital Research Institute, 101 College St., Canada; Institute of Biomaterials and Biomedical Engineering, University of Toronto, Canada
| | - Sara S Nunes
- University Health Network, Toronto General Hospital Research Institute, 101 College St., Canada; Institute of Biomaterials and Biomedical Engineering, University of Toronto, Canada; Heart & Stroke/Richard Lewar Centre of Excellence, University of Toronto, Canada; Department of Laboratory Medicine and Pathobiology, University of Toronto, Canada.
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93
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Abstract
Ageing appears to be a nearly universal feature of life, ranging from unicellular microorganisms to humans. Longevity depends on the maintenance of cellular functionality, and an organism's ability to respond to stress has been linked to functional maintenance and longevity. Stress response pathways might indeed become therapeutic targets of therapies aimed at extending the healthy lifespan. Various progeroid syndromes have been linked to genome instability, indicating an important causal role of DNA damage accumulation in the ageing process and the development of age-related pathologies. Recently, non-cell-autonomous mechanisms including the systemic consequences of cellular senescence have been implicated in regulating organismal ageing. We discuss here the role of cellular and systemic mechanisms of ageing and their role in ageing-associated diseases.
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Affiliation(s)
- Paulo F L da Silva
- Institute for Genome Stability in Ageing and Disease, Medical Faculty, University of Cologne, Joseph-Stelzmann-Strasse 26, 50931 Cologne, Germany.,Cologne Excellence Cluster for Cellular Stress Responses in Ageing-Associated Diseases (CECAD), Center for Molecular Medicine Cologne (CMMC), University of Cologne, Joseph-Stelzmann-Strasse 26, 50931 Cologne, Germany
| | - Björn Schumacher
- Institute for Genome Stability in Ageing and Disease, Medical Faculty, University of Cologne, Joseph-Stelzmann-Strasse 26, 50931 Cologne, Germany.,Cologne Excellence Cluster for Cellular Stress Responses in Ageing-Associated Diseases (CECAD), Center for Molecular Medicine Cologne (CMMC), University of Cologne, Joseph-Stelzmann-Strasse 26, 50931 Cologne, Germany
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94
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Sagiv A, Bar-Shai A, Levi N, Hatzav M, Zada L, Ovadya Y, Roitman L, Manella G, Regev O, Majewska J, Vadai E, Eilam R, Feigelson SW, Tsoory M, Tauc M, Alon R, Krizhanovsky V. p53 in Bronchial Club Cells Facilitates Chronic Lung Inflammation by Promoting Senescence. Cell Rep 2019; 22:3468-3479. [PMID: 29590616 DOI: 10.1016/j.celrep.2018.03.009] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2017] [Revised: 11/28/2017] [Accepted: 02/28/2018] [Indexed: 12/31/2022] Open
Abstract
The tumor suppressor p53 limits tumorigenesis by inducing apoptosis, cell cycle arrest, and senescence. Although p53 is known to limit inflammation during tumor development, its role in regulating chronic lung inflammation is less well understood. To elucidate the function of airway epithelial p53 in such inflammation, we subjected genetically modified mice, whose bronchial epithelial club cells lack p53, to repetitive inhalations of lipopolysaccharide (LPS), an exposure that leads to severe chronic bronchitis and airway senescence in wild-type mice. Surprisingly, the club cell p53 knockout mice exhibited reduced airway senescence and bronchitis in response to chronic LPS exposure and were significantly protected from global lung destruction. Furthermore, pharmacological elimination of senescent cells also protected wild-type mice from chronic LPS-induced bronchitis. Our results implicate p53 in induction of club-cell senescence and correlate epithelial cell senescence of chronic airway inflammation and lung destruction.
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Affiliation(s)
- Adi Sagiv
- Department of Molecular Cell Biology, The Weizmann Institute of Science, 7610001 Rehovot, Israel
| | - Amir Bar-Shai
- Department of Immunology, The Weizmann Institute of Science, 7610001 Rehovot, Israel
| | - Naama Levi
- Department of Molecular Cell Biology, The Weizmann Institute of Science, 7610001 Rehovot, Israel
| | - Miki Hatzav
- Department of Immunology, The Weizmann Institute of Science, 7610001 Rehovot, Israel
| | - Lior Zada
- Department of Molecular Cell Biology, The Weizmann Institute of Science, 7610001 Rehovot, Israel
| | - Yossi Ovadya
- Department of Molecular Cell Biology, The Weizmann Institute of Science, 7610001 Rehovot, Israel
| | - Lior Roitman
- Department of Molecular Cell Biology, The Weizmann Institute of Science, 7610001 Rehovot, Israel
| | - Gal Manella
- Department of Molecular Cell Biology, The Weizmann Institute of Science, 7610001 Rehovot, Israel
| | - Ofer Regev
- Department of Immunology, The Weizmann Institute of Science, 7610001 Rehovot, Israel
| | - Julia Majewska
- Department of Molecular Cell Biology, The Weizmann Institute of Science, 7610001 Rehovot, Israel
| | - Ezra Vadai
- Department of Molecular Cell Biology, The Weizmann Institute of Science, 7610001 Rehovot, Israel
| | - Raya Eilam
- Department of Veterinary Resources, The Weizmann Institute of Science, 7610001 Rehovot, Israel
| | - Sara W Feigelson
- Department of Immunology, The Weizmann Institute of Science, 7610001 Rehovot, Israel
| | - Michael Tsoory
- Department of Veterinary Resources, The Weizmann Institute of Science, 7610001 Rehovot, Israel
| | - Michel Tauc
- University of Nice Sophia Antipolis, Nice, France
| | - Ronen Alon
- Department of Immunology, The Weizmann Institute of Science, 7610001 Rehovot, Israel
| | - Valery Krizhanovsky
- Department of Molecular Cell Biology, The Weizmann Institute of Science, 7610001 Rehovot, Israel.
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95
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Mano Y, Yoshio S, Shoji H, Tomonari S, Aoki Y, Aoyanagi N, Okamoto T, Matsuura Y, Osawa Y, Kimura K, Yugawa K, Wang H, Oda Y, Yoshizumi T, Maehara Y, Kanto T. Bone morphogenetic protein 4 provides cancer-supportive phenotypes to liver fibroblasts in patients with hepatocellular carcinoma. J Gastroenterol 2019; 54:1007-1018. [PMID: 30941514 DOI: 10.1007/s00535-019-01579-5] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/06/2018] [Accepted: 03/25/2019] [Indexed: 02/07/2023]
Abstract
BACKGROUND Cancer-associated fibroblasts (CAFs) are essential constituents of cancer-supportive microenvironments. The high incidence of hepatocellular carcinoma (HCC) in advanced fibrosis patients implies that fibroblasts have a promoting effect on HCC development. We aimed to explore the regulators of phenotypes and function of CAFs in the liver. METHODS We established primary cancer-associated fibroblasts (CAFs) and non-cancerous liver fibroblasts (NFs) from 15 patients who underwent HCC resection. We compared phenotypes, capacity of cytokine/chemokine production and gene expression profiles between pairs of CAFs and NFs from the same donors. We examined resected tissue from additional 50 patients with HCC for immunohistochemical analyses. RESULTS The CAFs expressed more ACTA2 and COL1A1 than the NFs, suggesting that CAFs are more activated phenotype. The CAFs produced larger amounts of IL-6, IL-8 and CCL2 than the NFs, which led to invasiveness of HuH7 in vitro. We found that Bone Morphogenetic Protein-4 (BMP4) is up-regulated in CAFs compared to NFs. The CAF phenotype and function were gained by BMP4 over-expression or recombinant BMP4 given to fibroblasts, all of which decreased with BMP4 knockdown. In tissues obtained from the patients, BMP4-positive cells are mainly observed in encapsulated fibrous lesions and HCC. Positive expression of BMP4 in HCC in resected tissues, not in fibroblasts, was associated with poorer postoperative overall survival in patients with HCC. CONCLUSION Endogenous and exogenous BMP4 activate liver fibroblasts to gain capacity of secreting cytokines and enhancing invasiveness of cancer cells in the liver. BMP4 is one of the regulatory factors of CAFs functioning in the microenvironment of HCC.
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Affiliation(s)
- Yohei Mano
- The Research Center for Hepatitis and Immunology, National Center for Global Health and Medicine, 1-7-1, Kohnodai, Ichikawa, Chiba, 272-8516, Japan.,Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Sachiyo Yoshio
- The Research Center for Hepatitis and Immunology, National Center for Global Health and Medicine, 1-7-1, Kohnodai, Ichikawa, Chiba, 272-8516, Japan
| | - Hirotaka Shoji
- The Research Center for Hepatitis and Immunology, National Center for Global Health and Medicine, 1-7-1, Kohnodai, Ichikawa, Chiba, 272-8516, Japan
| | - Shimagaki Tomonari
- The Research Center for Hepatitis and Immunology, National Center for Global Health and Medicine, 1-7-1, Kohnodai, Ichikawa, Chiba, 272-8516, Japan.,Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Yoshihiko Aoki
- The Research Center for Hepatitis and Immunology, National Center for Global Health and Medicine, 1-7-1, Kohnodai, Ichikawa, Chiba, 272-8516, Japan
| | - Nobuyoshi Aoyanagi
- Department of Surgery, Kohnodai Hospital, National Center for Global Health and Medicine, Ichikawa, Chiba, Japan
| | - Toru Okamoto
- Department of Molecular Virology, Research Institute for Microbial Diseases, Osaka University, Suita, Osaka, Japan
| | - Yoshiharu Matsuura
- Department of Molecular Virology, Research Institute for Microbial Diseases, Osaka University, Suita, Osaka, Japan
| | - Yosuke Osawa
- The Research Center for Hepatitis and Immunology, National Center for Global Health and Medicine, 1-7-1, Kohnodai, Ichikawa, Chiba, 272-8516, Japan
| | - Kiminori Kimura
- Department of Hepatology, Tokyo Metropolitan Cancer and Infectious Diseases Center Komagome Hospital, Tokyo, Japan
| | - Kyohei Yugawa
- Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan.,Department of Anatomic Pathology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Huanlin Wang
- Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan.,Department of Anatomic Pathology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Yoshinao Oda
- Department of Anatomic Pathology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Tomoharu Yoshizumi
- Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | | | - Tatsuya Kanto
- The Research Center for Hepatitis and Immunology, National Center for Global Health and Medicine, 1-7-1, Kohnodai, Ichikawa, Chiba, 272-8516, Japan.
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96
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Meng X, Wang H, Song X, Clifton AC, Xiao J. The potential role of senescence in limiting fibrosis caused by aging. J Cell Physiol 2019; 235:4046-4059. [PMID: 31637710 DOI: 10.1002/jcp.29313] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2019] [Accepted: 09/30/2019] [Indexed: 02/06/2023]
Abstract
Fibrosis-related diseases carry with them a high mortality rate and their morbidity increases with age. Recent findings indicate that induced senescence in myofibroblasts can limit or reduce myocardial fibrosis, cirrhosis, and idiopathic pulmonary fibrosis, while also accelerating wound healing. However, more senescent cells are accumulated as organisms age, which exacerbates aging-related diseases. These two contradictory theories inspired us to summarize papers on the restrictive effect of senescence on fibrosis and to input the key findings into simple software that we developed to assist with data organization and presentation. In this review, we illustrate that senescent cells secrete more matrix metalloproteinases to solubilize excess collagen, while chemokines and cytokines activate immune cells to eliminate senescent cells. In the elderly, it is perhaps more effective to limit fibrosis by inducing myofibroblast senescence and then removing senescent cells that are not cleared via normal mechanisms by antisenescence therapies.
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Affiliation(s)
- Xinghua Meng
- Heilongjiang Key Laboratory for Laboratory Animals and Comparative Medicine, Northeast Agriculture University, Harbin, P. R. China
| | - Haoran Wang
- Heilongjiang Key Laboratory for Laboratory Animals and Comparative Medicine, Northeast Agriculture University, Harbin, P. R. China
| | - Xiaopeng Song
- Heilongjiang Key Laboratory for Laboratory Animals and Comparative Medicine, Northeast Agriculture University, Harbin, P. R. China
| | - Alancia C Clifton
- Heilongjiang Key Laboratory for Laboratory Animals and Comparative Medicine, Northeast Agriculture University, Harbin, P. R. China
| | - Jianhua Xiao
- Heilongjiang Key Laboratory for Laboratory Animals and Comparative Medicine, Northeast Agriculture University, Harbin, P. R. China
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97
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Massanella M, Karris MY, Pérez-Santiago J, Yek C, Vitomirov A, Mehta SR. Analyses of Mitochondrial DNA and Immune Phenotyping Suggest Accelerated T-Cell Turnover in Treated HIV. J Acquir Immune Defic Syndr 2019; 79:399-406. [PMID: 30312276 DOI: 10.1097/qai.0000000000001824] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
BACKGROUND HIV infection is associated with premature aging, and mitochondrial integrity is compromised during the aging process. Because mitochondrial toxicity is a consequence of antiretroviral therapies (ARTs), we hypothesized HIV and long-term ART would correlate with immunosenescence and mitochondrial DNA (mtDNA) pathology. SETTING Thirteen older HIV-infected individuals (aged >40 years) with virologic suppression (stratified by duration of ART) were compared with 10 uninfected controls well-matched for age. METHODS Peripheral blood T-cells were immunophenotyped to measure immune activation, proliferation, and immunosenescence in subsets. mtDNA copies per cell and the relative abundance of mtDNA carrying the "common deletion" (RACD) were quantified by droplet digital polymerase chain reaction. RESULTS Immune activation was higher in HIV-infected individuals than HIV-uninfected individuals in mature CD4 T-cell subsets (CD4TTM P = 0.025, CD4TEM P = 0.0020) regardless of ART duration. Cell populations from uninfected individuals were more likely to be more senescent populations in mature CD4 T-cell subsets (TTM P = 0.017), and CD8 (CD8TEMRA+ P = 0.0026). No differences were observed in mtDNA or RACD levels in any CD4 T-cell subsets, while CD8TSCM of infected individuals trended to have more mtDNA (P = 0.057) and reduced RACD (P = 0.0025). CONCLUSIONS HIV-infected individuals demonstrated increased immune activation, but reduced senescence in more mature T-cell subsets. Increased mtDNA content and lower RACD in CD8TSCM suggest immune activation driven turnover of these cells in HIV-infected persons.
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Affiliation(s)
- Marta Massanella
- Department of Medicine, University of California San Diego, CA.,Department of Microbiology, Infectiology and Immunology, Centre de Recherche du CHUM, Universite[Combining Acute Accent] de Montre[Combining Acute Accent]al, Montre[Combining Acute Accent]al, QC, Canada
| | - Maile Y Karris
- Department of Medicine, University of California San Diego, CA
| | - Josué Pérez-Santiago
- Department of Medicine, University of California San Diego, CA.,Comprehensive Cancer Center, University of Puerto Rico, San Juan, PR
| | - Christina Yek
- Department of Medicine, University of California San Diego, CA.,University of Texas Southwestern Medical Center, Dallas, TX
| | | | - Sanjay R Mehta
- Department of Medicine, University of California San Diego, CA.,Department of Pathology, University of California San Diego, CA.,Veterans Affairs Medical Center, San Diego, CA
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98
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Paget V, Ben Kacem M, Dos Santos M, Benadjaoud MA, Soysouvanh F, Buard V, Georges T, Vaurijoux A, Gruel G, François A, Guipaud O, Milliat F. Multiparametric radiobiological assays show that variation of X-ray energy strongly impacts relative biological effectiveness: comparison between 220 kV and 4 MV. Sci Rep 2019; 9:14328. [PMID: 31586152 PMCID: PMC6778087 DOI: 10.1038/s41598-019-50908-4] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2019] [Accepted: 09/20/2019] [Indexed: 01/10/2023] Open
Abstract
Based on classic clonogenic assay, it is accepted by the scientific community that, whatever the energy, the relative biological effectiveness of X-rays is equal to 1. However, although X-ray beams are widely used in diagnosis, interventional medicine and radiotherapy, comparisons of their energies are scarce. We therefore assessed in vitro the effects of low- and high-energy X-rays using Human umbilical vein endothelial cells (HUVECs) by performing clonogenic assay, measuring viability/mortality, counting γ-H2AX foci, studying cell proliferation and cellular senescence by flow cytometry and by performing gene analysis on custom arrays. Taken together, excepted for γ-H2AX foci counts, these experiments systematically show more adverse effects of high energy X-rays, while the relative biological effectiveness of photons is around 1, whatever the quality of the X-ray beam. These results strongly suggest that multiparametric analysis should be considered in support of clonogenic assay.
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Affiliation(s)
- Vincent Paget
- Institute for Radiological Protection and Nuclear Safety (IRSN), Department of RAdiobiology and regenerative MEDicine (SERAMED), Laboratory of MEDical Radiobiology (LRMed), Fontenay-aux-Roses, 92260, France.
| | - Mariam Ben Kacem
- Institute for Radiological Protection and Nuclear Safety (IRSN), Department of RAdiobiology and regenerative MEDicine (SERAMED), Laboratory of MEDical Radiobiology (LRMed), Fontenay-aux-Roses, 92260, France
| | - Morgane Dos Santos
- Institute for Radiological Protection and Nuclear Safety (IRSN), Department of RAdiobiology and regenerative MEDicine (SERAMED), Laboratory of Radiobiology of Accidental exposures (LRAcc), Fontenay-aux-Roses, France
| | - Mohamed A Benadjaoud
- Institute for Radiological Protection and Nuclear Safety (IRSN), Department of RAdiobiology and regenerative MEDicine (SERAMED), Fontenay-aux-Roses, France
| | - Frédéric Soysouvanh
- Institute for Radiological Protection and Nuclear Safety (IRSN), Department of RAdiobiology and regenerative MEDicine (SERAMED), Laboratory of MEDical Radiobiology (LRMed), Fontenay-aux-Roses, 92260, France
| | - Valérie Buard
- Institute for Radiological Protection and Nuclear Safety (IRSN), Department of RAdiobiology and regenerative MEDicine (SERAMED), Laboratory of MEDical Radiobiology (LRMed), Fontenay-aux-Roses, 92260, France
| | - Tarlet Georges
- Institute for Radiological Protection and Nuclear Safety (IRSN), Department of RAdiobiology and regenerative MEDicine (SERAMED), Laboratory of MEDical Radiobiology (LRMed), Fontenay-aux-Roses, 92260, France
| | - Aurélie Vaurijoux
- Institute for Radiological Protection and Nuclear Safety (IRSN), Department of RAdiobiology and regenerative MEDicine (SERAMED), Laboratory of Radiobiology of Accidental exposures (LRAcc), Fontenay-aux-Roses, France
| | - Gaëtan Gruel
- Institute for Radiological Protection and Nuclear Safety (IRSN), Department of RAdiobiology and regenerative MEDicine (SERAMED), Laboratory of Radiobiology of Accidental exposures (LRAcc), Fontenay-aux-Roses, France
| | - Agnès François
- Institute for Radiological Protection and Nuclear Safety (IRSN), Department of RAdiobiology and regenerative MEDicine (SERAMED), Laboratory of MEDical Radiobiology (LRMed), Fontenay-aux-Roses, 92260, France
| | - Olivier Guipaud
- Institute for Radiological Protection and Nuclear Safety (IRSN), Department of RAdiobiology and regenerative MEDicine (SERAMED), Laboratory of MEDical Radiobiology (LRMed), Fontenay-aux-Roses, 92260, France
| | - Fabien Milliat
- Institute for Radiological Protection and Nuclear Safety (IRSN), Department of RAdiobiology and regenerative MEDicine (SERAMED), Laboratory of MEDical Radiobiology (LRMed), Fontenay-aux-Roses, 92260, France
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Gal H, Lysenko M, Stroganov S, Vadai E, Youssef SA, Tzadikevitch‐Geffen K, Rotkopf R, Biron‐Shental T, de Bruin A, Neeman M, Krizhanovsky V. Molecular pathways of senescence regulate placental structure and function. EMBO J 2019; 38:e100849. [PMID: 31424120 PMCID: PMC6745498 DOI: 10.15252/embj.2018100849] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2018] [Revised: 07/12/2019] [Accepted: 07/26/2019] [Indexed: 02/06/2023] Open
Abstract
The placenta is an autonomous organ that maintains fetal growth and development. Its multinucleated syncytiotrophoblast layer, providing fetal nourishment during gestation, exhibits characteristics of cellular senescence. We show that in human placentas from pregnancies with intrauterine growth restriction, these characteristics are decreased. To elucidate the functions of pathways regulating senescence in syncytiotrophoblast, we used dynamic contrast-enhanced MRI in mice with attenuated senescence programs. This approach revealed an altered dynamics in placentas of p53-/- , Cdkn2a-/- , and Cdkn2a-/- ;p53-/- mice, accompanied by histopathological changes in placental labyrinths. Human primary syncytiotrophoblast upregulated senescence markers and molecular pathways associated with cell-cycle inhibition and senescence-associated secretory phenotype. The pathways and components of the secretory phenotype were compromised in mouse placentas with attenuated senescence and in human placentas from pregnancies with intrauterine growth restriction. We propose that molecular mediators of senescence regulate placental structure and function, through both cell-autonomous and non-autonomous mechanisms.
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Affiliation(s)
- Hilah Gal
- Department of Molecular Cell BiologyThe Weizmann Institute of ScienceRehovotIsrael
| | - Marina Lysenko
- Department of Biological RegulationThe Weizmann Institute of ScienceRehovotIsrael
| | - Sima Stroganov
- Department of Molecular Cell BiologyThe Weizmann Institute of ScienceRehovotIsrael
| | - Ezra Vadai
- Department of Molecular Cell BiologyThe Weizmann Institute of ScienceRehovotIsrael
| | - Sameh A Youssef
- Department of PathobiologyFaculty of Veterinary MedicineDutch Molecular Pathology CenterUtrecht UniversityUtrechtThe Netherlands
- Division of Molecular GeneticsDepartment of PediatricsUniversity Medical Center GroningenUniversity of GroningenGroningenThe Netherlands
| | | | - Ron Rotkopf
- Bioinformatics and Biological Computing UnitDepartment of Biological ServicesThe Weizmann Institute of ScienceRehovotIsrael
| | - Tal Biron‐Shental
- Department of Obstetrics and GynecologyMeir Medical CenterKfar SabaIsrael
| | - Alain de Bruin
- Department of PathobiologyFaculty of Veterinary MedicineDutch Molecular Pathology CenterUtrecht UniversityUtrechtThe Netherlands
- Division of Molecular GeneticsDepartment of PediatricsUniversity Medical Center GroningenUniversity of GroningenGroningenThe Netherlands
| | - Michal Neeman
- Department of Biological RegulationThe Weizmann Institute of ScienceRehovotIsrael
| | - Valery Krizhanovsky
- Department of Molecular Cell BiologyThe Weizmann Institute of ScienceRehovotIsrael
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Bashiri Dezfouli A, Salar-Amoli J, Pourfathollah AA, Yazdi M, Nikougoftar-Zarif M, Khosravi M, Hassan J. Doxorubicin-induced senescence through NF-κB affected by the age of mouse mesenchymal stem cells. J Cell Physiol 2019; 235:2336-2349. [PMID: 31517394 DOI: 10.1002/jcp.29140] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2019] [Accepted: 08/23/2019] [Indexed: 12/21/2022]
Abstract
The senescence is proposed as a defense mechanism against many anticancer drugs. This complication is marked by differences in cell appearance and inner structures underlying the impairment in function. In this experiment, doxorubicin-induced senescence was assessed in mesenchymal stem cells (MSCs) isolated from the bone marrow of different-aged Balb/c mice (1, 8, and 16 months old). In addition, doxorubicin kinetics in culture medium were investigated to compare the drug absorption rate by different-aged MSCs. Several methods were exerted including Sandwich ELISA for NF-κB activation, propidium iodide staining for cell cycle analysis, Flow-fluorescent in-situ hybridization (Flow-FISH) assay for telomere length measurement, and specific staining for evaluation of β-galactosidase. Determination of doxorubicin in a medium was performed by high-performance liquid chromatography technique. Following doxorubicin exposure, cells underwent substantial telomere shortening, cell cycle arresting in G2 phase, and increased β-galactosidase activity. Interestingly, the enhanced level of NF-κB was observed in all age groups. The highest and lowest sensitivity to telomere shortening attributed to 1- and 8-month-old MSCs, respectively. In consistent with Flow-FISH results, the β-galactosidase activity was higher in young-aged MSCs after treatment. Statistical analysis indicated a correlation between the reduction of telomere length and cessation in G2 phase. Regarding the obtained kinetics equations, the rate of doxorubicin absorption by all aged MSCs followed the same trend. In conclusion, the changing of some elements involved in doxorubicin-induced senescence can be affected by the age of the cells significantly in young MSCs than two other age groups. Hereupon, these changing patterns can open new insights to develop anticancer therapeutic strategies.
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Affiliation(s)
- Ali Bashiri Dezfouli
- Department of Basic Sciences, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran
| | - Jamileh Salar-Amoli
- Department of Basic Sciences, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran
| | - Ali Akbar Pourfathollah
- Department of Immunology, Faculty of Medical Science, Tarbiat Modares University, Tehran, Iran
| | - Mina Yazdi
- Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran
| | - Mahin Nikougoftar-Zarif
- Blood Transfusion Research Center, High Institute for Research and Education in Transfusion Medicine, Tehran, Iran
| | - Mohammad Khosravi
- Department of Pathobiology, Faculty of Veterinary Medicine, Shahid Chamran University of Ahvaz, Ahvaz, Iran
| | - Jalal Hassan
- Department of Basic Sciences, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran
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