51
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Shin JJ, Schröder MS, Caiado F, Wyman SK, Bray NL, Bordi M, Dewitt MA, Vu JT, Kim WT, Hockemeyer D, Manz MG, Corn JE. Controlled Cycling and Quiescence Enables Efficient HDR in Engraftment-Enriched Adult Hematopoietic Stem and Progenitor Cells. Cell Rep 2020; 32:108093. [PMID: 32877675 PMCID: PMC7487781 DOI: 10.1016/j.celrep.2020.108093] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2020] [Revised: 07/07/2020] [Accepted: 08/07/2020] [Indexed: 12/12/2022] Open
Abstract
Genome editing often takes the form of either error-prone sequence disruption by non-homologous end joining (NHEJ) or sequence replacement by homology-directed repair (HDR). Although NHEJ is generally effective, HDR is often difficult in primary cells. Here, we use a combination of immunophenotyping, next-generation sequencing, and single-cell RNA sequencing to investigate and reprogram genome editing outcomes in subpopulations of adult hematopoietic stem and progenitor cells. We find that although quiescent stem-enriched cells mostly use NHEJ, non-quiescent cells with the same immunophenotype use both NHEJ and HDR. Inducing quiescence before editing results in a loss of HDR in all cell subtypes. We develop a strategy of controlled cycling and quiescence that yields a 6-fold increase in the HDR/NHEJ ratio in quiescent stem cells ex vivo and in vivo. Our results highlight the tension between editing and cellular physiology and suggest strategies to manipulate quiescent cells for research and therapeutic genome editing.
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Affiliation(s)
- Jiyung J Shin
- Innovative Genomics Institute, University of California, Berkeley, CA 94720, USA; Department of Molecular and Cell Biology, University of California, Berkeley, CA 94720, USA; Department of Biology, ETH Zürich, 8093 Zürich, Switzerland
| | | | - Francisco Caiado
- Department of Medical Oncology and Hematology, University Hospital Zurich and University of Zurich, 8091 Zurich, Switzerland
| | - Stacia K Wyman
- Innovative Genomics Institute, University of California, Berkeley, CA 94720, USA; Department of Molecular and Cell Biology, University of California, Berkeley, CA 94720, USA
| | - Nicolas L Bray
- Innovative Genomics Institute, University of California, Berkeley, CA 94720, USA; Department of Molecular and Cell Biology, University of California, Berkeley, CA 94720, USA
| | - Matteo Bordi
- Department of Biology, ETH Zürich, 8093 Zürich, Switzerland
| | - Mark A Dewitt
- Innovative Genomics Institute, University of California, Berkeley, CA 94720, USA; Department of Molecular and Cell Biology, University of California, Berkeley, CA 94720, USA
| | - Jonathan T Vu
- Innovative Genomics Institute, University of California, Berkeley, CA 94720, USA; Department of Molecular and Cell Biology, University of California, Berkeley, CA 94720, USA
| | - Won-Tae Kim
- Department of Molecular and Cell Biology, University of California, Berkeley, CA 94720, USA
| | - Dirk Hockemeyer
- Department of Molecular and Cell Biology, University of California, Berkeley, CA 94720, USA
| | - Markus G Manz
- Department of Medical Oncology and Hematology, University Hospital Zurich and University of Zurich, 8091 Zurich, Switzerland
| | - Jacob E Corn
- Innovative Genomics Institute, University of California, Berkeley, CA 94720, USA; Department of Molecular and Cell Biology, University of California, Berkeley, CA 94720, USA; Department of Biology, ETH Zürich, 8093 Zürich, Switzerland.
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52
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Sharma S, Bhonde R. Genetic and epigenetic stability of stem cells: Epigenetic modifiers modulate the fate of mesenchymal stem cells. Genomics 2020; 112:3615-3623. [DOI: 10.1016/j.ygeno.2020.04.022] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2019] [Revised: 04/08/2020] [Accepted: 04/24/2020] [Indexed: 12/11/2022]
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53
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DNA damage response and preleukemic fusion genes induced by ionizing radiation in umbilical cord blood hematopoietic stem cells. Sci Rep 2020; 10:13722. [PMID: 32839487 PMCID: PMC7445283 DOI: 10.1038/s41598-020-70657-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2019] [Accepted: 07/27/2020] [Indexed: 12/25/2022] Open
Abstract
There is clear evidence that ionizing radiation (IR) causes leukemia. For many types of leukemia, the preleukemic fusion genes (PFG), as consequences of DNA damage and chromosomal translocations, occur in hematopoietic stem and progenitor cells (HSPC) in utero and could be detected in umbilical cord blood (UCB) of newborns. However, relatively limited information is available about radiation-induced apoptosis, DNA damage and PFG formation in human HSPC. In this study we revealed that CD34+ HSPC compared to lymphocytes: (i) are extremely radio-resistant showing delayed time kinetics of apoptosis, (ii) accumulate lower level of endogenous DNA damage/early apoptotic γH2AX pan-stained cells, (iii) have higher level of radiation-induced 53BP1 and γH2AX/53BP1 co-localized DNA double stranded breaks, and (iv) after low dose of IR may form very low level of BCR-ABL PFG. Within CD34+ HSPC we identified CD34+CD38+ progenitor cells as a highly apoptosis-resistant population, while CD34+CD38- hematopoietic stem/multipotent progenitor cells (HSC/MPP) as a population very sensitive to radiation-induced apoptosis. Our study provides critical insights into how human HSPC respond to IR in the context of DNA damage, apoptosis and PFG.
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54
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Tobin SW, Alibhai FJ, Weisel RD, Li RK. Considering Cause and Effect of Immune Cell Aging on Cardiac Repair after Myocardial Infarction. Cells 2020; 9:E1894. [PMID: 32823583 PMCID: PMC7465938 DOI: 10.3390/cells9081894] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Revised: 08/11/2020] [Accepted: 08/12/2020] [Indexed: 12/16/2022] Open
Abstract
The importance of the immune system for cardiac repair following myocardial infarction is undeniable; however, the complex nature of immune cell behavior has limited the ability to develop effective therapeutics. This limitation highlights the need for a better understanding of the function of each immune cell population during the inflammatory and resolution phases of cardiac repair. The development of reliable therapies is further complicated by aging, which is associated with a decline in cell and organ function and the onset of cardiovascular and immunological diseases. Aging of the immune system has important consequences on heart function as both chronic cardiac inflammation and an impaired immune response to cardiac injury are observed in older individuals. Several studies have suggested that rejuvenating the aged immune system may be a valid therapeutic candidate to prevent or treat heart disease. Here, we review the basic patterns of immune cell behavior after myocardial infarction and discuss the autonomous and nonautonomous manners of hematopoietic stem cell and immune cell aging. Lastly, we identify prospective therapies that may rejuvenate the aged immune system to improve heart function such as anti-inflammatory and senolytic therapies, bone marrow transplant, niche remodeling and regulation of immune cell differentiation.
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Affiliation(s)
- Stephanie W. Tobin
- Division of Cardiovascular Surgery, Toronto General Hospital Research Institute, University Health Network, Toronto, ON M5T 1P5, Canada; (S.W.T.); (F.J.A.); (R.D.W.)
| | - Faisal J. Alibhai
- Division of Cardiovascular Surgery, Toronto General Hospital Research Institute, University Health Network, Toronto, ON M5T 1P5, Canada; (S.W.T.); (F.J.A.); (R.D.W.)
| | - Richard D. Weisel
- Division of Cardiovascular Surgery, Toronto General Hospital Research Institute, University Health Network, Toronto, ON M5T 1P5, Canada; (S.W.T.); (F.J.A.); (R.D.W.)
- Division of Cardiac Surgery, Peter Munk Cardiac Centre, Toronto General Hospital and University of Toronto, Toronto, ON M5G 2N2, Canada
| | - Ren-Ke Li
- Division of Cardiovascular Surgery, Toronto General Hospital Research Institute, University Health Network, Toronto, ON M5T 1P5, Canada; (S.W.T.); (F.J.A.); (R.D.W.)
- Division of Cardiac Surgery, Peter Munk Cardiac Centre, Toronto General Hospital and University of Toronto, Toronto, ON M5G 2N2, Canada
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55
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Cho HJ, Lee J, Yoon SR, Lee HG, Jung H. Regulation of Hematopoietic Stem Cell Fate and Malignancy. Int J Mol Sci 2020; 21:ijms21134780. [PMID: 32640596 PMCID: PMC7369689 DOI: 10.3390/ijms21134780] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2020] [Revised: 07/02/2020] [Accepted: 07/03/2020] [Indexed: 12/13/2022] Open
Abstract
The regulation of hematopoietic stem cell (HSC) fate decision, whether they keep quiescence, self-renew, or differentiate into blood lineage cells, is critical for maintaining the immune system throughout one’s lifetime. As HSCs are exposed to age-related stress, they gradually lose their self-renewal and regenerative capacity. Recently, many reports have implicated signaling pathways in the regulation of HSC fate determination and malignancies under aging stress or pathophysiological conditions. In this review, we focus on the current understanding of signaling pathways that regulate HSC fate including quiescence, self-renewal, and differentiation during aging, and additionally introduce pharmacological approaches to rescue defects of HSC fate determination or hematopoietic malignancies by kinase signaling pathways.
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Affiliation(s)
- Hee Jun Cho
- Immunotherapy Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), 125 Gwahak-ro, Yuseong-gu, Daejeon 34141, Korea; (H.J.C.); (S.R.Y.)
| | - Jungwoon Lee
- Environmental Disease Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), 125 Gwahak-ro, Yuseong-gu, Daejeon 34141, Korea;
| | - Suk Ran Yoon
- Immunotherapy Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), 125 Gwahak-ro, Yuseong-gu, Daejeon 34141, Korea; (H.J.C.); (S.R.Y.)
| | - Hee Gu Lee
- Immunotherapy Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), 125 Gwahak-ro, Yuseong-gu, Daejeon 34141, Korea; (H.J.C.); (S.R.Y.)
- Department of Biomolecular Science, Korea University of Science and Technology (UST), 113 Gwahak-ro, Yuseong-gu, Daejeon 34113, Korea
- Correspondence: (H.G.L.); (H.J.)
| | - Haiyoung Jung
- Immunotherapy Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), 125 Gwahak-ro, Yuseong-gu, Daejeon 34141, Korea; (H.J.C.); (S.R.Y.)
- Correspondence: (H.G.L.); (H.J.)
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56
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Cianflone E, Torella M, Biamonte F, De Angelis A, Urbanek K, Costanzo FS, Rota M, Ellison-Hughes GM, Torella D. Targeting Cardiac Stem Cell Senescence to Treat Cardiac Aging and Disease. Cells 2020; 9:E1558. [PMID: 32604861 PMCID: PMC7349658 DOI: 10.3390/cells9061558] [Citation(s) in RCA: 73] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2020] [Revised: 06/19/2020] [Accepted: 06/25/2020] [Indexed: 12/13/2022] Open
Abstract
Adult stem/progenitor are a small population of cells that reside in tissue-specific niches and possess the potential to differentiate in all cell types of the organ in which they operate. Adult stem cells are implicated with the homeostasis, regeneration, and aging of all tissues. Tissue-specific adult stem cell senescence has emerged as an attractive theory for the decline in mammalian tissue and organ function during aging. Cardiac aging, in particular, manifests as functional tissue degeneration that leads to heart failure. Adult cardiac stem/progenitor cell (CSC) senescence has been accordingly associated with physiological and pathological processes encompassing both non-age and age-related decline in cardiac tissue repair and organ dysfunction and disease. Senescence is a highly active and dynamic cell process with a first classical hallmark represented by its replicative limit, which is the establishment of a stable growth arrest over time that is mainly secondary to DNA damage and reactive oxygen species (ROS) accumulation elicited by different intrinsic stimuli (like metabolism), as well as external stimuli and age. Replicative senescence is mainly executed by telomere shortening, the activation of the p53/p16INK4/Rb molecular pathways, and chromatin remodeling. In addition, senescent cells produce and secrete a complex mixture of molecules, commonly known as the senescence-associated secretory phenotype (SASP), that regulate most of their non-cell-autonomous effects. In this review, we discuss the molecular and cellular mechanisms regulating different characteristics of the senescence phenotype and their consequences for adult CSCs in particular. Because senescent cells contribute to the outcome of a variety of cardiac diseases, including age-related and unrelated cardiac diseases like diabetic cardiomyopathy and anthracycline cardiotoxicity, therapies that target senescent cell clearance are actively being explored. Moreover, the further understanding of the reversibility of the senescence phenotype will help to develop novel rational therapeutic strategies.
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Affiliation(s)
- Eleonora Cianflone
- Department of Medical and Surgical Sciences, Magna Graecia University, 88100 Catanzaro, Italy;
| | - Michele Torella
- Department of Translational Medical Sciences, AORN dei Colli/Monaldi Hospital, University of Campania “L. Vanvitelli”, Via Leonardo Bianchi, 80131 Naples, Italy;
| | - Flavia Biamonte
- Department of Experimental and Clinical Medicine and Interdepartmental Centre of Services (CIS), Magna Graecia University, 88100 Catanzaro, Italy; (F.B.); (F.S.C.)
| | - Antonella De Angelis
- Department of Experimental Medicine, Section of Pharmacology, University of Campania “L.Vanvitelli”, 80121 Naples, Italy;
| | - Konrad Urbanek
- Molecular and Cellular Cardiology, Department of Experimental and Clinical Medicine, Magna Graecia University, 88100 Catanzaro, Italy
| | - Francesco S. Costanzo
- Department of Experimental and Clinical Medicine and Interdepartmental Centre of Services (CIS), Magna Graecia University, 88100 Catanzaro, Italy; (F.B.); (F.S.C.)
| | - Marcello Rota
- Department of Physiology, New York Medical College, Valhalla, NY 10595, USA;
| | - Georgina M. Ellison-Hughes
- Centre for Human and Applied Physiological Sciences and Centre for Stem Cells and Regenerative Medicine, School of Basic and Medical Biosciences, Faculty of Life Sciences & Medicine, King’s College London, Guys Campus-Great Maze Pond rd, London SE1 1UL, UK;
| | - Daniele Torella
- Molecular and Cellular Cardiology, Department of Experimental and Clinical Medicine, Magna Graecia University, 88100 Catanzaro, Italy
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Anglada T, Repullés J, Espinal A, LaBarge MA, Stampfer MR, Genescà A, Martín M. Delayed γH2AX foci disappearance in mammary epithelial cells from aged women reveals an age-associated DNA repair defect. Aging (Albany NY) 2020; 11:1510-1523. [PMID: 30875333 PMCID: PMC6428106 DOI: 10.18632/aging.101849] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2018] [Accepted: 03/09/2019] [Indexed: 01/15/2023]
Abstract
Aging is a degenerative process in which genome instability plays a crucial role. To gain insight into the link between organismal aging and DNA repair capacity, we analyzed DNA double-strand break (DSB) resolution efficiency in human mammary epithelial cells from 12 healthy donors of young and old ages. The frequency of DSBs was measured by quantifying the number of γH2AX foci before and after 1Gy of γ-rays and it was higher in cells from aged donors (ADs) at all times analyzed. At 24 hours after irradiation, ADs retained a significantly higher frequency of residual DSBs than young donors (YDs), which had already reached values close to basal levels. The kinetics of DSB induction and disappearance showed that cells from ADs and YDs repair DSBs with similar speed, although analysis of early times after irradiation indicate that a repair defect may lie within the firing of the DNA repair machinery in AD cells. Indeed, using a mathematical model we calculated a constant factor of delay affecting aged human epithelial cells repair kinetics. This defect manifests with the accumulation of DSBs that might eventually undergo illegitimate repair, thus posing a relevant threat to the maintenance of genome integrity in older individuals.
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Affiliation(s)
- Teresa Anglada
- Department of Cell Biology, Physiology and Immunology, Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain
| | - Joan Repullés
- Department of Cell Biology, Physiology and Immunology, Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain.,Microscopy Platform, Biomedical Research Institute Sant Pau (IIB-Sant Pau), Barcelona, 08041, Spain
| | - Anna Espinal
- Servei d'Estadística Aplicada, Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain
| | - Mark A LaBarge
- Department of Population Sciences, and Center for Cancer and Aging, Beckman Research Institute at City of Hope, Duarte, CA, 91010, USA.,Biological Systems and Engineering Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - Martha R Stampfer
- Biological Systems and Engineering Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - Anna Genescà
- Department of Cell Biology, Physiology and Immunology, Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain
| | - Marta Martín
- Department of Cell Biology, Physiology and Immunology, Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain
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58
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Lee GH, Hong KT, Choi JY, Shin HY, Lee WW, Kang HJ. Immunosenescent characteristics of T cells in young patients following haploidentical haematopoietic stem cell transplantation from parental donors. Clin Transl Immunology 2020; 9:e1124. [PMID: 32280463 PMCID: PMC7142179 DOI: 10.1002/cti2.1124] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2019] [Revised: 03/03/2020] [Accepted: 03/06/2020] [Indexed: 12/17/2022] Open
Abstract
Objectives Paediatric and adolescent patients in need of allogeneic haematopoietic stem cell transplantation (HSCT) generally receive stem cells from older, unrelated or parental donors when a sibling donor is not available. Despite encouraging clinical outcomes, it has been suggested that immune reconstitution accompanied by increased replicative stress and a large difference between donor and recipient age may worsen immunosenescence in paediatric recipients. Methods In this study, paired samples were collected at the same time from donors and recipients of haploidentical haematopoietic stem cell transplantation (HaploSCT). We then conducted flow cytometry‐based phenotypic and functional analyses and telomere length (TL) measurements of 21 paired T‐cell sets from parental donors and children who received T‐cell‐replete HaploSCT with post‐transplant cyclophosphamide (PTCy). Results Senescent T cells, CD28− or CD57+ cells, were significantly expanded in patients. Further, not only CD4+CD28− T cells, but also CD4+CD28+ T cells showed reduced cytokine production capacity and impaired polyfunctionality compared with parental donors, whereas their TCR‐mediated proliferation capacity was comparable. Of note, the TL in patient T cells was preserved, or even slightly longer, in senescent T cells compared with donor cells. Regression analysis showed that senescent features of CD4+ and CD8+ T cells in patients were influenced by donor age and the frequency of CD28− cells, respectively. Conclusion Our data suggest that in paediatric HaploSCT, premature immunosenescent changes occur in T cells from parental donors, and therefore, long‐term immune monitoring should be conducted.
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Affiliation(s)
- Ga Hye Lee
- Department of Biomedical Sciences Seoul National University College of Medicine Seoul South Korea.,BK21Plus Biomedical Science Project Seoul National University College of Medicine Seoul South Korea
| | - Kyung Taek Hong
- Department of Pediatrics Seoul National University College of Medicine Seoul South Korea.,Seoul National University Cancer Research Institute Seoul South Korea
| | - Jung Yoon Choi
- Department of Pediatrics Seoul National University College of Medicine Seoul South Korea.,Seoul National University Cancer Research Institute Seoul South Korea
| | - Hee Young Shin
- Department of Pediatrics Seoul National University College of Medicine Seoul South Korea.,Seoul National University Cancer Research Institute Seoul South Korea
| | - Won-Woo Lee
- Department of Biomedical Sciences Seoul National University College of Medicine Seoul South Korea.,BK21Plus Biomedical Science Project Seoul National University College of Medicine Seoul South Korea.,Seoul National University Cancer Research Institute Seoul South Korea.,Department of Microbiology and Immunology Seoul National University College of Medicine Seoul South Korea.,Ischemic/Hypoxic Disease Institute Seoul National University College of Medicine Seoul South Korea.,Institute of Infectious Diseases Seoul National University College of Medicine Seoul South Korea.,Seoul National University Hospital Biomedical Research Institute Seoul South Korea
| | - Hyoung Jin Kang
- Department of Pediatrics Seoul National University College of Medicine Seoul South Korea.,Seoul National University Cancer Research Institute Seoul South Korea
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59
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Li X, Zeng X, Xu Y, Wang B, Zhao Y, Lai X, Qian P, Huang H. Mechanisms and rejuvenation strategies for aged hematopoietic stem cells. J Hematol Oncol 2020; 13:31. [PMID: 32252797 PMCID: PMC7137344 DOI: 10.1186/s13045-020-00864-8] [Citation(s) in RCA: 51] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2019] [Accepted: 03/27/2020] [Indexed: 12/18/2022] Open
Abstract
Hematopoietic stem cell (HSC) aging, which is accompanied by reduced self-renewal ability, impaired homing, myeloid-biased differentiation, and other defects in hematopoietic reconstitution function, is a hot topic in stem cell research. Although the number of HSCs increases with age in both mice and humans, the increase cannot compensate for the defects of aged HSCs. Many studies have been performed from various perspectives to illustrate the potential mechanisms of HSC aging; however, the detailed molecular mechanisms remain unclear, blocking further exploration of aged HSC rejuvenation. To determine how aged HSC defects occur, we provide an overview of differences in the hallmarks, signaling pathways, and epigenetics of young and aged HSCs as well as of the bone marrow niche wherein HSCs reside. Notably, we summarize the very recent studies which dissect HSC aging at the single-cell level. Furthermore, we review the promising strategies for rejuvenating aged HSC functions. Considering that the incidence of many hematological malignancies is strongly associated with age, our HSC aging review delineates the association between functional changes and molecular mechanisms and may have significant clinical relevance.
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Affiliation(s)
- Xia Li
- Bone Marrow Transplantation Center, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, People's Republic of China.,Institute of Hematology, Zhejiang University, Hangzhou, Zhejiang, People's Republic of China.,Zhejiang Engineering Laboratory for Stem Cell and Immunotherapy, Hangzhou, Zhejiang, People's Republic of China
| | - Xiangjun Zeng
- Bone Marrow Transplantation Center, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, People's Republic of China.,Institute of Hematology, Zhejiang University, Hangzhou, Zhejiang, People's Republic of China.,Zhejiang Engineering Laboratory for Stem Cell and Immunotherapy, Hangzhou, Zhejiang, People's Republic of China
| | - Yulin Xu
- Bone Marrow Transplantation Center, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, People's Republic of China.,Institute of Hematology, Zhejiang University, Hangzhou, Zhejiang, People's Republic of China.,Zhejiang Engineering Laboratory for Stem Cell and Immunotherapy, Hangzhou, Zhejiang, People's Republic of China
| | - Binsheng Wang
- Bone Marrow Transplantation Center, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, People's Republic of China.,Institute of Hematology, Zhejiang University, Hangzhou, Zhejiang, People's Republic of China.,Zhejiang Engineering Laboratory for Stem Cell and Immunotherapy, Hangzhou, Zhejiang, People's Republic of China
| | - Yanmin Zhao
- Bone Marrow Transplantation Center, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, People's Republic of China.,Institute of Hematology, Zhejiang University, Hangzhou, Zhejiang, People's Republic of China.,Zhejiang Engineering Laboratory for Stem Cell and Immunotherapy, Hangzhou, Zhejiang, People's Republic of China
| | - Xiaoyu Lai
- Bone Marrow Transplantation Center, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, People's Republic of China.,Institute of Hematology, Zhejiang University, Hangzhou, Zhejiang, People's Republic of China.,Zhejiang Engineering Laboratory for Stem Cell and Immunotherapy, Hangzhou, Zhejiang, People's Republic of China
| | - Pengxu Qian
- Bone Marrow Transplantation Center, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, People's Republic of China.,Institute of Hematology, Zhejiang University, Hangzhou, Zhejiang, People's Republic of China.,Zhejiang Engineering Laboratory for Stem Cell and Immunotherapy, Hangzhou, Zhejiang, People's Republic of China
| | - He Huang
- Bone Marrow Transplantation Center, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, People's Republic of China. .,Institute of Hematology, Zhejiang University, Hangzhou, Zhejiang, People's Republic of China. .,Zhejiang Engineering Laboratory for Stem Cell and Immunotherapy, Hangzhou, Zhejiang, People's Republic of China.
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60
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Szade K, Zukowska M, Szade A, Nowak W, Skulimowska I, Ciesla M, Bukowska‐Strakova K, Gulati GS, Kachamakova‐Trojanowska N, Kusienicka A, Einwallner E, Kijowski J, Czauderna S, Esterbauer H, Benes V, L Weissman I, Dulak J, Jozkowicz A. Heme oxygenase-1 deficiency triggers exhaustion of hematopoietic stem cells. EMBO Rep 2020; 21:e47895. [PMID: 31885181 PMCID: PMC7001511 DOI: 10.15252/embr.201947895] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2019] [Revised: 11/14/2019] [Accepted: 11/22/2019] [Indexed: 01/01/2023] Open
Abstract
While intrinsic changes in aging hematopoietic stem cells (HSCs) are well characterized, it remains unclear how extrinsic factors affect HSC aging. Here, we demonstrate that cells in the niche-endothelial cells (ECs) and CXCL12-abundant reticular cells (CARs)-highly express the heme-degrading enzyme, heme oxygenase 1 (HO-1), but then decrease its expression with age. HO-1-deficient animals (HO-1-/- ) have altered numbers of ECs and CARs that produce less hematopoietic factors. HSCs co-cultured in vitro with HO-1-/- mesenchymal stromal cells expand, but have altered kinetic of growth and differentiation of derived colonies. HSCs from young HO-1-/- animals have reduced quiescence and regenerative potential. Young HO-1-/- HSCs exhibit features of premature exhaustion on the transcriptional and functional level. HO-1+/+ HSCs transplanted into HO-1-/- recipients exhaust their regenerative potential early and do not reconstitute secondary recipients. In turn, transplantation of HO-1-/- HSCs to the HO-1+/+ recipients recovers the regenerative potential of HO-1-/- HSCs and reverses their transcriptional alterations. Thus, HSC-extrinsic activity of HO-1 prevents HSCs from premature exhaustion and may restore the function of aged HSCs.
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Affiliation(s)
- Krzysztof Szade
- Department of Medical BiotechnologyFaculty of Biochemistry, Biophysics and BiotechnologyJagiellonian UniversityKrakowPoland
- Institute for Stem Cell Biology and Regenerative MedicineStanford UniversityStanfordCAUSA
| | - Monika Zukowska
- Department of Medical BiotechnologyFaculty of Biochemistry, Biophysics and BiotechnologyJagiellonian UniversityKrakowPoland
| | - Agata Szade
- Department of Medical BiotechnologyFaculty of Biochemistry, Biophysics and BiotechnologyJagiellonian UniversityKrakowPoland
| | - Witold Nowak
- Department of Medical BiotechnologyFaculty of Biochemistry, Biophysics and BiotechnologyJagiellonian UniversityKrakowPoland
| | - Izabella Skulimowska
- Department of Medical BiotechnologyFaculty of Biochemistry, Biophysics and BiotechnologyJagiellonian UniversityKrakowPoland
| | - Maciej Ciesla
- Department of Medical BiotechnologyFaculty of Biochemistry, Biophysics and BiotechnologyJagiellonian UniversityKrakowPoland
| | - Karolina Bukowska‐Strakova
- Department of Medical BiotechnologyFaculty of Biochemistry, Biophysics and BiotechnologyJagiellonian UniversityKrakowPoland
- Department of Clinical ImmunologyInstitute of PediatricsJagiellonian University Medical CollegeKrakowPoland
| | - Gunsagar Singh Gulati
- Institute for Stem Cell Biology and Regenerative MedicineStanford UniversityStanfordCAUSA
| | - Neli Kachamakova‐Trojanowska
- Department of Medical BiotechnologyFaculty of Biochemistry, Biophysics and BiotechnologyJagiellonian UniversityKrakowPoland
- Malopolska Centre of BiotechnologyJagiellonian UniversityKrakowPoland
| | - Anna Kusienicka
- Department of Medical BiotechnologyFaculty of Biochemistry, Biophysics and BiotechnologyJagiellonian UniversityKrakowPoland
| | - Elisa Einwallner
- Department of Laboratory MedicineCenter of Translational ResearchMedical University of ViennaViennaAustria
| | - Jacek Kijowski
- Department of TransplantationInstitute of PediatricsJagiellonian University Medical CollegeKrakowPoland
| | - Szymon Czauderna
- Department of Medical BiotechnologyFaculty of Biochemistry, Biophysics and BiotechnologyJagiellonian UniversityKrakowPoland
| | - Harald Esterbauer
- Department of Laboratory MedicineCenter of Translational ResearchMedical University of ViennaViennaAustria
| | | | - Irving L Weissman
- Institute for Stem Cell Biology and Regenerative MedicineStanford UniversityStanfordCAUSA
| | - Jozef Dulak
- Department of Medical BiotechnologyFaculty of Biochemistry, Biophysics and BiotechnologyJagiellonian UniversityKrakowPoland
- Malopolska Centre of BiotechnologyJagiellonian UniversityKrakowPoland
| | - Alicja Jozkowicz
- Department of Medical BiotechnologyFaculty of Biochemistry, Biophysics and BiotechnologyJagiellonian UniversityKrakowPoland
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61
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Jakl L, Marková E, Koláriková L, Belyaev I. Biodosimetry of Low Dose Ionizing Radiation Using DNA Repair Foci in Human Lymphocytes. Genes (Basel) 2020; 11:genes11010058. [PMID: 31947954 PMCID: PMC7016656 DOI: 10.3390/genes11010058] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2019] [Revised: 12/17/2019] [Accepted: 12/24/2019] [Indexed: 02/04/2023] Open
Abstract
Purpose: Ionizing radiation induced foci (IRIF) known also as DNA repair foci represent most sensitive endpoint for assessing DNA double strand breaks (DSB). IRIF are usually visualized and enumerated with the aid of fluorescence microscopy using antibodies to γH2AX and 53BP1. This study analyzed effect of low dose ionizing radiation on residual IRIF in human lymphocytes to the aim of potential biodosimetry and possible extrapolation of high-dose γH2AX/53BP1 effects to low doses and compared kinetics of DSB and IRIF. We also analyzed whether DNaseI, which is used for reducing of clumps, affects the IRIF level. Materials and Methods: The cryopreserved human lymphocytes from umbilical cord blood (UCB) were thawed with/without DNaseI, γ-irradiated at doses of 0, 5, 10, and 50 cGy and γH2AX/53BP1 foci were analyzed 30 min, 2 h, and 22 h post-irradiation using appropriate antibodies. We also analyzed kinetics of DSB using PFGE. Results: No significant difference was observed between data obtained by γH2AX foci evaluation in cells that were irradiated by low doses and data obtained by extrapolation from higher doses. Residual 53BP1 foci induced by low doses significantly outreached the data extrapolated from irradiation by higher doses. 53BP1 foci induced by low dose-radiation remain longer at DSB loci than foci induced by higher doses. There was no significant effect of DNaseI on DNA repair foci. Conclusions: Primary γH2AX, 53BP1 foci and their co-localization represent valuable markers for biodosimetry of low doses, but their usefulness is limited by short time window. Residual γH2AX and 53BP1 foci are more useful markers for biodosimetry in vitro. Effects of low doses can be extrapolated from high dose using γH2AX residual foci while γH2AX/53BP1 foci are valuable markers for evaluation of initial DSB induced by ionizing radiation. Residual IRIF induced by low doses persist longer time than those induced by higher doses.
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Affiliation(s)
- Lukáš Jakl
- Correspondence: ; Tel.: +421-2-59327321; Fax: +421-2-59327305
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62
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Palma G, Taffelli A, Fellin F, D'Avino V, Scartoni D, Tommasino F, Scifoni E, Durante M, Amichetti M, Schwarz M, Amelio D, Cella L. Modelling the risk of radiation induced alopecia in brain tumor patients treated with scanned proton beams. Radiother Oncol 2019; 144:127-134. [PMID: 31805517 DOI: 10.1016/j.radonc.2019.11.013] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2019] [Revised: 11/08/2019] [Accepted: 11/11/2019] [Indexed: 02/07/2023]
Abstract
PURPOSE To develop normal tissue complication probability (NTCP) models for radiation-induced alopecia (RIA) in brain tumor patients treated with proton therapy (PT). METHODS AND MATERIALS We analyzed 116 brain tumor adult patients undergoing scanning beam PT (median dose 54 GyRBE; range 36-72) for CTCAE v.4 grade 2 (G2) acute (≤90 days), late (>90 days) and permanent (>12 months) RIA. The relative dose-surface histogram (DSH) of the scalp was extracted and used for Lyman-Kutcher-Burman (LKB) modelling. Moreover, DSH metrics (Sx: the surface receiving ≥ X Gy, D2%: near maximum dose, Dmean: mean dose) and non-dosimetric variables were included in a multivariable logistic regression NTCP model. Model performances were evaluated by the cross-validated area under the receiver operator curve (ROC-AUC). RESULTS Acute, late and permanent G2-RIA was observed in 52%, 35% and 19% of the patients, respectively. The LKB models showed a weak dose-surface effect (0.09 ≤ n ≤ 0.19) with relative steepness 0.29 ≤ m ≤ 0.56, and increasing tolerance dose values when moving from acute and late (22 and 24 GyRBE) to permanent RIA (44 GyRBE). Multivariable modelling selected S21Gy for acute and S25Gy, for late G2-RIA as the most predictive DSH factors. Younger age was selected as risk factor for acute G2-RIA while surgery as risk factor for late G2-RIA. D2% was the only variable selected for permanent G2-RIA. Both LKB and logistic models exhibited high predictive performances (ROC-AUCs range 0.86-0.90). CONCLUSION We derived NTCP models to predict G2-RIA after PT, providing a comprehensive modelling framework for acute, late and permanent occurrences that, once externally validated, could be exploited for individualized scalp sparing treatment planning strategies in brain tumor patients.
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Affiliation(s)
- Giuseppe Palma
- National Research Council, Institute of Biostructures and Bioimaging, Napoli, Italy
| | - Alberto Taffelli
- Istituto Nazionale di Fisica Nucleare, Trento Institute for Fundamental Physics and Applications, Trento, Italy
| | - Francesco Fellin
- Trento Proton Therapy Center, Azienda Provinciale per i Servizi Sanitari (APSS), Trento, Italy
| | - Vittoria D'Avino
- National Research Council, Institute of Biostructures and Bioimaging, Napoli, Italy
| | - Daniele Scartoni
- Trento Proton Therapy Center, Azienda Provinciale per i Servizi Sanitari (APSS), Trento, Italy
| | - Francesco Tommasino
- Istituto Nazionale di Fisica Nucleare, Trento Institute for Fundamental Physics and Applications, Trento, Italy; University of Trento, Physics Department, Trento, Italy
| | - Emanuele Scifoni
- Istituto Nazionale di Fisica Nucleare, Trento Institute for Fundamental Physics and Applications, Trento, Italy
| | - Marco Durante
- GSI Helmholtzzentrum für Schwerionenforschung, Biophysics Department, Darmstadt, Germany; Technische Universität Darmstadt, Institut für Festkörperphysik, Darmstadt, Germany
| | - Maurizio Amichetti
- Trento Proton Therapy Center, Azienda Provinciale per i Servizi Sanitari (APSS), Trento, Italy
| | - Marco Schwarz
- Istituto Nazionale di Fisica Nucleare, Trento Institute for Fundamental Physics and Applications, Trento, Italy; Trento Proton Therapy Center, Azienda Provinciale per i Servizi Sanitari (APSS), Trento, Italy
| | - Dante Amelio
- Trento Proton Therapy Center, Azienda Provinciale per i Servizi Sanitari (APSS), Trento, Italy
| | - Laura Cella
- National Research Council, Institute of Biostructures and Bioimaging, Napoli, Italy.
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63
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Henry E, Souissi-Sahraoui I, Deynoux M, Lefèvre A, Barroca V, Campalans A, Ménard V, Calvo J, Pflumio F, Arcangeli ML. Human hematopoietic stem/progenitor cells display reactive oxygen species-dependent long-term hematopoietic defects after exposure to low doses of ionizing radiations. Haematologica 2019; 105:2044-2055. [PMID: 31780635 PMCID: PMC7395291 DOI: 10.3324/haematol.2019.226936] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2019] [Accepted: 11/27/2019] [Indexed: 01/16/2023] Open
Abstract
Hematopoietic stem cells are responsible for life-long blood cell production and are highly sensitive to exogenous stresses. The effects of low doses of ionizing radiations on radiosensitive tissues such as the hematopoietic tissue are still unknown despite their increasing use in medical imaging. Here, we study the consequences of low doses of ionizing radiations on differentiation and self-renewal capacities of human primary hematopoietic stem/progenitor cells (HSPC). We found that a single 20 mGy dose impairs the hematopoietic reconstitution potential of human HSPC but not their differentiation properties. In contrast to high irradiation doses, low doses of irradiation do not induce DNA double strand breaks in HSPC but, similar to high doses, induce a rapid and transient increase of reactive oxygen species (ROS) that promotes activation of the p38MAPK pathway. HSPC treatment with ROS scavengers or p38MAPK inhibitor prior exposure to 20 mGy irradiation abolishes the 20 mGy-induced defects indicating that ROS and p38MAPK pathways are transducers of low doses of radiation effects. Taken together, these results show that a 20 mGy dose of ionizing radiation reduces the reconstitution potential of HSPC suggesting an effect on the self-renewal potential of human hematopoietic stem cells and pinpointing ROS or the p38MAPK as therapeutic targets. Inhibition of ROS or the p38MAPK pathway protects human primary HSPC from low-dose irradiation toxicity.
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Affiliation(s)
- Elia Henry
- INSERM, U1274, Laboratory "Niche, Cancer and Hematopoiesis".,CEA, DRF-JACOB-IRCM-SCSR-LSHL, UMR "Genetic stability, Stem Cells and Radiation".,UMR "Genetic stability, Stem Cells and Radiation" Université de Paris.,UMR "Genetic stability, Stem Cells and Radiation", Université Paris-Saclay
| | - Inès Souissi-Sahraoui
- INSERM, U1274, Laboratory "Niche, Cancer and Hematopoiesis".,CEA, DRF-JACOB-IRCM-SCSR-LSHL, UMR "Genetic stability, Stem Cells and Radiation".,UMR "Genetic stability, Stem Cells and Radiation" Université de Paris.,UMR "Genetic stability, Stem Cells and Radiation", Université Paris-Saclay
| | - Margaux Deynoux
- INSERM, U1274, Laboratory "Niche, Cancer and Hematopoiesis".,CEA, DRF-JACOB-IRCM-SCSR-LSHL, UMR "Genetic stability, Stem Cells and Radiation".,UMR "Genetic stability, Stem Cells and Radiation" Université de Paris.,UMR "Genetic stability, Stem Cells and Radiation", Université Paris-Saclay
| | - Andréas Lefèvre
- INSERM, U1274, Laboratory "Niche, Cancer and Hematopoiesis".,CEA, DRF-JACOB-IRCM-SCSR-LSHL, UMR "Genetic stability, Stem Cells and Radiation".,UMR "Genetic stability, Stem Cells and Radiation" Université de Paris.,UMR "Genetic stability, Stem Cells and Radiation", Université Paris-Saclay
| | - Vilma Barroca
- INSERM, U1274, Laboratory "Niche, Cancer and Hematopoiesis".,CEA, DRF-JACOB-IRCM-SCSR-LSHL, UMR "Genetic stability, Stem Cells and Radiation".,UMR "Genetic stability, Stem Cells and Radiation" Université de Paris.,UMR "Genetic stability, Stem Cells and Radiation", Université Paris-Saclay
| | - Anna Campalans
- UMR "Genetic stability, Stem Cells and Radiation" Université de Paris.,UMR "Genetic stability, Stem Cells and Radiation", Université Paris-Saclay.,CEA, DRF-JACOB-IRCM-SIGRR-LRIG, UMR "Genetic stability, Stem Cells and Radiation"
| | - Véronique Ménard
- UMR "Genetic stability, Stem Cells and Radiation" Université de Paris.,UMR "Genetic stability, Stem Cells and Radiation", Université Paris-Saclay.,UMR "Genetic stability, Stem Cells and Radiation", F-92265 Fontenay-aux-Roses, France
| | - Julien Calvo
- INSERM, U1274, Laboratory "Niche, Cancer and Hematopoiesis".,CEA, DRF-JACOB-IRCM-SCSR-LSHL, UMR "Genetic stability, Stem Cells and Radiation".,UMR "Genetic stability, Stem Cells and Radiation" Université de Paris.,UMR "Genetic stability, Stem Cells and Radiation", Université Paris-Saclay
| | - Françoise Pflumio
- INSERM, U1274, Laboratory "Niche, Cancer and Hematopoiesis".,CEA, DRF-JACOB-IRCM-SCSR-LSHL, UMR "Genetic stability, Stem Cells and Radiation".,UMR "Genetic stability, Stem Cells and Radiation" Université de Paris.,UMR "Genetic stability, Stem Cells and Radiation", Université Paris-Saclay
| | - Marie-Laure Arcangeli
- INSERM, U1274, Laboratory "Niche, Cancer and Hematopoiesis" .,CEA, DRF-JACOB-IRCM-SCSR-LSHL, UMR "Genetic stability, Stem Cells and Radiation".,UMR "Genetic stability, Stem Cells and Radiation" Université de Paris.,UMR "Genetic stability, Stem Cells and Radiation", Université Paris-Saclay
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64
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Scheffold A, Baig AH, Chen Z, von Löhneysen SE, Becker F, Morita Y, Avila AI, Groth M, Lechel A, Schmid F, Kraus JM, Kestler HA, Stilgenbauer S, Philipp M, Burkhalter MD. Elevated Hedgehog activity contributes to attenuated DNA damage responses in aged hematopoietic cells. Leukemia 2019; 34:1125-1134. [PMID: 31728056 PMCID: PMC7214262 DOI: 10.1038/s41375-019-0641-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2019] [Revised: 10/04/2019] [Accepted: 11/03/2019] [Indexed: 01/13/2023]
Abstract
Accumulation of DNA damage and myeloid-skewed differentiation characterize aging of the hematopoietic system, yet underlying mechanisms remain incompletely understood. Here, we show that aging hematopoietic progenitor cells particularly of the myeloid branch exhibit enhanced resistance to bulky DNA lesions—a relevant type of DNA damage induced by toxins such as cancer drugs or endogenous aldehydes. We identified aging-associated activation of the Hedgehog (Hh) pathway to be connected to this phenotype. Inhibition of Hh signaling reverts DNA damage tolerance and DNA damage-resistant proliferation in aged hematopoietic progenitors. Vice versa, elevating Hh activity in young hematopoietic progenitors is sufficient to impair DNA damage responses. Altogether, these findings provide experimental evidence for aging-associated increases in Hh activity driving DNA damage tolerance in myeloid progenitors and myeloid-skewed differentiation. Modulation of Hh activity could thus be explored as a therapeutic strategy to prevent DNA damage tolerance, myeloid skewing, and disease development in the aging hematopoietic system.
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Affiliation(s)
- Annika Scheffold
- Department of Internal Medicine III, University Hospital Ulm, 89081, Ulm, Germany
| | - Ali H Baig
- Leibniz Institute on Aging, Fritz Lipmann Institute, 07745, Jena, Germany
| | - Zhiyang Chen
- Leibniz Institute on Aging, Fritz Lipmann Institute, 07745, Jena, Germany
| | | | - Friedrich Becker
- Leibniz Institute on Aging, Fritz Lipmann Institute, 07745, Jena, Germany
| | - Yohei Morita
- Leibniz Institute on Aging, Fritz Lipmann Institute, 07745, Jena, Germany
| | - Alush I Avila
- Leibniz Institute on Aging, Fritz Lipmann Institute, 07745, Jena, Germany
| | - Marco Groth
- Leibniz Institute on Aging, Fritz Lipmann Institute, 07745, Jena, Germany
| | - André Lechel
- Department of Internal Medicine I, University Hospital Ulm, 89081, Ulm, Germany
| | - Florian Schmid
- Institute of Medical Systems Biology, Ulm University, 89081, Ulm, Germany
| | - Johann M Kraus
- Institute of Medical Systems Biology, Ulm University, 89081, Ulm, Germany
| | - Hans A Kestler
- Institute of Medical Systems Biology, Ulm University, 89081, Ulm, Germany
| | - Stephan Stilgenbauer
- Department of Internal Medicine III, University Hospital Ulm, 89081, Ulm, Germany
| | - Melanie Philipp
- Institute of Biochemistry and Molecular Biology, Ulm University, 89081, Ulm, Germany.,Department of Experimental and Clinical Pharmacology and Pharmacogenomics, Division of Pharmacogenomics, University of Tübingen, 72074, Tübingen, Germany
| | - Martin D Burkhalter
- Institute of Biochemistry and Molecular Biology, Ulm University, 89081, Ulm, Germany. .,Department of Experimental and Clinical Pharmacology and Pharmacogenomics, Division of Pharmacogenomics, University of Tübingen, 72074, Tübingen, Germany.
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65
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Maharajan N, Vijayakumar K, Jang CH, Cho GW. Caloric restriction maintains stem cells through niche and regulates stem cell aging. J Mol Med (Berl) 2019; 98:25-37. [DOI: 10.1007/s00109-019-01846-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2019] [Revised: 10/17/2019] [Accepted: 10/22/2019] [Indexed: 12/12/2022]
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66
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Yoshioka KI, Matsuno Y, Hyodo M, Fujimori H. Genomic-Destabilization-Associated Mutagenesis and Clonal Evolution of Cells with Mutations in Tumor-Suppressor Genes. Cancers (Basel) 2019; 11:cancers11111643. [PMID: 31653100 PMCID: PMC6895985 DOI: 10.3390/cancers11111643] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2019] [Accepted: 10/22/2019] [Indexed: 02/06/2023] Open
Abstract
The development of cancer is driven by genomic instability and mutations. In general, cancer develops via multiple steps. Each step involves the clonal evolution of cells with abrogated defense systems, such as cells with mutations in cancer-suppressor genes. However, it remains unclear how cellular defense systems are abrogated and the associated clonal evolution is triggered and propagated. In this manuscript, we review current knowledge regarding mutagenesis associated with genomic destabilization and its relationship with the clonal evolution of cells over the course of cancer development, focusing especially on mechanistic aspects.
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Affiliation(s)
- Ken-Ichi Yoshioka
- Division of Carcinogenesis and Cancer Prevention, National Cancer Center Research Institute, 5-1-1 Tsukiji, Chuo-ku, Tokyo 104-0045, Japan.
| | - Yusuke Matsuno
- Division of Carcinogenesis and Cancer Prevention, National Cancer Center Research Institute, 5-1-1 Tsukiji, Chuo-ku, Tokyo 104-0045, Japan.
- Department of Applied Chemistry, Faculty of Science, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan.
| | - Mai Hyodo
- Division of Carcinogenesis and Cancer Prevention, National Cancer Center Research Institute, 5-1-1 Tsukiji, Chuo-ku, Tokyo 104-0045, Japan.
- Biological Science and Technology, Tokyo University of Science, Niijuku, Katsushika-ku, Tokyo 125-8585, Japan.
| | - Haruka Fujimori
- Division of Carcinogenesis and Cancer Prevention, National Cancer Center Research Institute, 5-1-1 Tsukiji, Chuo-ku, Tokyo 104-0045, Japan.
- Biological Science and Technology, Tokyo University of Science, Niijuku, Katsushika-ku, Tokyo 125-8585, Japan.
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67
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Wang MJ, Chen J, Chen F, Liu Q, Sun Y, Yan C, Yang T, Bao Y, Hu YP. Rejuvenating Strategies of Tissue-specific Stem Cells for Healthy Aging. Aging Dis 2019; 10:871-882. [PMID: 31440391 PMCID: PMC6675530 DOI: 10.14336/ad.2018.1119] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2018] [Accepted: 11/19/2018] [Indexed: 12/22/2022] Open
Abstract
Although aging is a physiological process, it has raised interest in the science of aging and rejuvenation because of the increasing burden on the rapidly aging global population. With advanced age, there is a decline in homeostatic maintenance and regenerative responsiveness to the injury of various tissues, thereby contributing to the incidence of age-related diseases. The primary cause of the functional declines that occur along with aging is considered to be the exhaustion of stem cell functions in their corresponding tissues. Age-related changes in the systemic environment, the niche, and stem cells contribute to this loss. Thus, the reversal of stem cell aging at the cellular level might lead to the rejuvenation of the animal at an organismic level and the prevention of aging, which would be critical for developing new therapies for age-related dysfunction and diseases. Here, we will explore the effects of aging on stem cells in different tissues. The focus of this discussion is on pro-youth interventions that target intrinsic stem cell properties, environmental niche component, systemic factors, and senescent cellular clearance, which are promising for developing strategies related to the reversal of aged stem cell function and optimizing tissue repair processes.
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Affiliation(s)
- Min-Jun Wang
- 1Department of Cell Biology, Center for Stem Cell and Medicine, Second Military Medical University, Shanghai 200433, China
| | - Jiajia Chen
- 1Department of Cell Biology, Center for Stem Cell and Medicine, Second Military Medical University, Shanghai 200433, China
| | - Fei Chen
- 1Department of Cell Biology, Center for Stem Cell and Medicine, Second Military Medical University, Shanghai 200433, China
| | - Qinggui Liu
- 1Department of Cell Biology, Center for Stem Cell and Medicine, Second Military Medical University, Shanghai 200433, China
| | - Yu Sun
- 1Department of Cell Biology, Center for Stem Cell and Medicine, Second Military Medical University, Shanghai 200433, China
| | - Chen Yan
- 1Department of Cell Biology, Center for Stem Cell and Medicine, Second Military Medical University, Shanghai 200433, China
| | - Tao Yang
- 1Department of Cell Biology, Center for Stem Cell and Medicine, Second Military Medical University, Shanghai 200433, China
| | - Yiwen Bao
- 1Department of Cell Biology, Center for Stem Cell and Medicine, Second Military Medical University, Shanghai 200433, China.,2Department of Diagnostic radiology, University of Hong Kong, Hong Kong 999077, China
| | - Yi-Ping Hu
- 1Department of Cell Biology, Center for Stem Cell and Medicine, Second Military Medical University, Shanghai 200433, China
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68
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DNA damage in aging, the stem cell perspective. Hum Genet 2019; 139:309-331. [PMID: 31324975 DOI: 10.1007/s00439-019-02047-z] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2019] [Accepted: 07/05/2019] [Indexed: 02/07/2023]
Abstract
DNA damage is one of the most consistent cellular process proposed to contribute to aging. The maintenance of genomic and epigenomic integrity is critical for proper function of cells and tissues throughout life, and this homeostasis is under constant strain from both extrinsic and intrinsic insults. Considering the relationship between lifespan and genotoxic burden, it is plausible that the longest-lived cellular populations would face an accumulation of DNA damage over time. Tissue-specific stem cells are multipotent populations residing in localized niches and are responsible for maintaining all lineages of their resident tissue/system throughout life. However, many of these stem cells are impacted by genotoxic stress. Several factors may dictate the specific stem cell population response to DNA damage, including the niche location, life history, and fate decisions after damage accrual. This leads to differential handling of DNA damage in different stem cell compartments. Given the importance of adult stem cells in preserving normal tissue function during an individual's lifetime, DNA damage sensitivity and accumulation in these compartments could have crucial implications for aging. Despite this, more support for direct functional effects driven by accumulated DNA damage in adult stem cell compartments is needed. This review will present current evidence for the accumulation and potential influence of DNA damage in adult tissue-specific stem cells and propose inquiry directions that could benefit individual healthspan.
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69
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Niedernhofer LJ, Gurkar AU, Wang Y, Vijg J, Hoeijmakers JHJ, Robbins PD. Nuclear Genomic Instability and Aging. Annu Rev Biochem 2019; 87:295-322. [PMID: 29925262 DOI: 10.1146/annurev-biochem-062917-012239] [Citation(s) in RCA: 145] [Impact Index Per Article: 29.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
The nuclear genome decays as organisms age. Numerous studies demonstrate that the burden of several classes of DNA lesions is greater in older mammals than in young mammals. More challenging is proving this is a cause rather than a consequence of aging. The DNA damage theory of aging, which argues that genomic instability plays a causal role in aging, has recently gained momentum. Support for this theory stems partly from progeroid syndromes in which inherited defects in DNA repair increase the burden of DNA damage leading to accelerated aging of one or more organs. Additionally, growing evidence shows that DNA damage accrual triggers cellular senescence and metabolic changes that promote a decline in tissue function and increased susceptibility to age-related diseases. Here, we examine multiple lines of evidence correlating nuclear DNA damage with aging. We then consider how, mechanistically, nuclear genotoxic stress could promote aging. We conclude that the evidence, in toto, supports a role for DNA damage as a nidus of aging.
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Affiliation(s)
- Laura J Niedernhofer
- Department of Molecular Medicine and the Center on Aging, The Scripps Research Institute Florida, Jupiter, Florida 33458, USA;
| | - Aditi U Gurkar
- Department of Molecular Medicine and the Center on Aging, The Scripps Research Institute Florida, Jupiter, Florida 33458, USA; .,Department of Medicine, Vascular Medicine Institute, University of Pittsburgh, Pittsburgh, Pennsylvania 15261, USA
| | - Yinsheng Wang
- Department of Chemistry, University of California, Riverside, California 92521, USA
| | - Jan Vijg
- Department of Genetics, Albert Einstein College of Medicine, Michael F. Price Center, Bronx, New York 10461, USA
| | - Jan H J Hoeijmakers
- Department of Molecular Genetics, Erasmus University Medical Center, 3015 CE Rotterdam, The Netherlands
| | - Paul D Robbins
- Department of Molecular Medicine and the Center on Aging, The Scripps Research Institute Florida, Jupiter, Florida 33458, USA;
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70
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Verovskaya EV, Dellorusso PV, Passegué E. Losing Sense of Self and Surroundings: Hematopoietic Stem Cell Aging and Leukemic Transformation. Trends Mol Med 2019; 25:494-515. [PMID: 31109796 DOI: 10.1016/j.molmed.2019.04.006] [Citation(s) in RCA: 70] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2018] [Revised: 03/29/2019] [Accepted: 04/11/2019] [Indexed: 02/07/2023]
Abstract
Aging leads to functional decline of the hematopoietic system, manifested by an increased incidence of hematological disease in the elderly. Deterioration of hematopoietic integrity with age originates in part from the degraded functionality of hematopoietic stem cells (HSCs). Here, we review recent findings identifying changes in metabolic programs and loss of epigenetic identity as major drivers of old HSC dysfunction and their role in promoting leukemia onset in the context of age-related clonal hematopoiesis (ARCH). We discuss how inflammatory and growth signals from the aged bone marrow (BM) microenvironment contribute to cell-intrinsic HSC aging phenotypes and favor leukemia development. Finally, we address how metabolic, epigenetic, and inflammatory pathways could be targeted to enhance old HSC fitness and prevent leukemic transformation.
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Affiliation(s)
- Evgenia V Verovskaya
- Columbia Stem Cell Initiative, Department of Genetics and Development, Columbia University Irving Medical Center, New York, NY 10032, USA
| | - Paul V Dellorusso
- Columbia Stem Cell Initiative, Department of Genetics and Development, Columbia University Irving Medical Center, New York, NY 10032, USA
| | - Emmanuelle Passegué
- Columbia Stem Cell Initiative, Department of Genetics and Development, Columbia University Irving Medical Center, New York, NY 10032, USA.
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71
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Nakahara F, Borger DK, Wei Q, Pinho S, Maryanovich M, Zahalka AH, Suzuki M, Cruz CD, Wang Z, Xu C, Boulais PE, Ma'ayan A, Greally JM, Frenette PS. Engineering a haematopoietic stem cell niche by revitalizing mesenchymal stromal cells. Nat Cell Biol 2019; 21:560-567. [PMID: 30988422 PMCID: PMC6499646 DOI: 10.1038/s41556-019-0308-3] [Citation(s) in RCA: 63] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2018] [Accepted: 03/07/2019] [Indexed: 12/15/2022]
Abstract
Haematopoietic stem cells (HSCs) are maintained by bone marrow (BM) niches in vivo1,2, but the ability of niche cells to maintain HSCs ex vivo is markedly diminished. Expression of niche factors by Nestin-GFP+ mesenchymal-derived stromal cells (MSCs) is downregulated upon culture, suggesting that transcriptional rewiring may contribute to this reduced HSC maintenance potential. Using an RNA sequencing screen, we identified 5 transcription factors (Klf7, Ostf1, Xbp1, Irf3, Irf7) that restored HSC niche function in cultured BM-derived MSCs. These revitalized MSCs (rMSCs) exhibited enhanced synthesis of HSC niche factors while retaining their mesenchymal differentiation capacity. In contrast to HSCs co-cultured with control MSCs, HSCs expanded with rMSCs showed higher repopulation capacity and protected lethally irradiated recipient mice. Competitive reconstitution assays revealed ~7-fold expansion of functional HSCs by rMSCs. rMSCs prevented the accumulation of DNA damage in cultured HSCs, a hallmark of ageing and replication stress. Analysis of the reprogramming mechanisms uncovered a role for myocyte enhancer factor 2c (Mef2c) in the revitalization of MSCs. These results provide insight in the transcriptional regulation of the niche with implications for stem cell-based therapies.
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Affiliation(s)
- Fumio Nakahara
- Ruth L. and David S. Gottesman Institute for Stem Cell and Regenerative Medicine Research, Albert Einstein College of Medicine, Bronx, NY, USA.,Department of Cell Biology, Albert Einstein College of Medicine, Bronx, NY, USA.,Department of Hematology and Oncology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Daniel K Borger
- Ruth L. and David S. Gottesman Institute for Stem Cell and Regenerative Medicine Research, Albert Einstein College of Medicine, Bronx, NY, USA.,Department of Cell Biology, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Qiaozhi Wei
- Ruth L. and David S. Gottesman Institute for Stem Cell and Regenerative Medicine Research, Albert Einstein College of Medicine, Bronx, NY, USA.,Department of Cell Biology, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Sandra Pinho
- Ruth L. and David S. Gottesman Institute for Stem Cell and Regenerative Medicine Research, Albert Einstein College of Medicine, Bronx, NY, USA.,Department of Cell Biology, Albert Einstein College of Medicine, Bronx, NY, USA.,Department of Medicine, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Maria Maryanovich
- Ruth L. and David S. Gottesman Institute for Stem Cell and Regenerative Medicine Research, Albert Einstein College of Medicine, Bronx, NY, USA.,Department of Cell Biology, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Ali H Zahalka
- Ruth L. and David S. Gottesman Institute for Stem Cell and Regenerative Medicine Research, Albert Einstein College of Medicine, Bronx, NY, USA.,Department of Cell Biology, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Masako Suzuki
- Center for Epigenomics, Department of Genetics, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Cristian D Cruz
- Ruth L. and David S. Gottesman Institute for Stem Cell and Regenerative Medicine Research, Albert Einstein College of Medicine, Bronx, NY, USA.,Department of Cell Biology, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Zichen Wang
- Department of Pharmacological Sciences, Mount Sinai Center for Bioinformatics, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Chunliang Xu
- Ruth L. and David S. Gottesman Institute for Stem Cell and Regenerative Medicine Research, Albert Einstein College of Medicine, Bronx, NY, USA.,Department of Cell Biology, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Philip E Boulais
- Ruth L. and David S. Gottesman Institute for Stem Cell and Regenerative Medicine Research, Albert Einstein College of Medicine, Bronx, NY, USA.,Department of Cell Biology, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Avi Ma'ayan
- Department of Pharmacological Sciences, Mount Sinai Center for Bioinformatics, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - John M Greally
- Department of Medicine, Albert Einstein College of Medicine, Bronx, NY, USA.,Center for Epigenomics, Department of Genetics, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Paul S Frenette
- Ruth L. and David S. Gottesman Institute for Stem Cell and Regenerative Medicine Research, Albert Einstein College of Medicine, Bronx, NY, USA. .,Department of Cell Biology, Albert Einstein College of Medicine, Bronx, NY, USA. .,Department of Medicine, Albert Einstein College of Medicine, Bronx, NY, USA.
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72
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Lan YY, Heather JM, Eisenhaure T, Garris CS, Lieb D, Raychowdhury R, Hacohen N. Extranuclear DNA accumulates in aged cells and contributes to senescence and inflammation. Aging Cell 2019; 18:e12901. [PMID: 30706626 PMCID: PMC6413746 DOI: 10.1111/acel.12901] [Citation(s) in RCA: 79] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2018] [Revised: 11/19/2018] [Accepted: 11/26/2018] [Indexed: 12/19/2022] Open
Abstract
Systemic inflammation is central to aging‐related conditions. However, the intrinsic factors that induce inflammation are not well understood. We previously identified a cell‐autonomous pathway through which damaged nuclear DNA is trafficked to the cytosol where it activates innate cytosolic DNA sensors that trigger inflammation. These results led us to hypothesize that DNA released after cumulative damage contributes to persistent inflammation in aging cells through a similar mechanism. Consistent with this notion, we found that older cells harbored higher levels of extranuclear DNA compared to younger cells. Extranuclear DNA was exported by a leptomycin B‐sensitive process, degraded through the autophagosome–lysosomal pathway and triggered innate immune responses through the DNA‐sensing cGAS‐STING pathway. Patient cells from the aging diseases ataxia and progeria also displayed extranuclear DNA accumulation, increased pIRF3 and pTBK1, and STING‐dependent p16 expression. Removing extranuclear DNA in old cells using DNASE2A reduced innate immune responses and senescence‐associated (SA) β‐gal enzyme activity. Cells and tissues of Dnase2a−/− mice with defective DNA degradation exhibited slower growth, higher activity of β‐gal, or increased expression of HP‐1β and p16 proteins, while Dnase2a−/−;Sting−/− cells and tissues were rescued from these phenotypes, supporting a role for extranuclear DNA in senescence. We hypothesize a direct role for excess DNA in aging‐related inflammation and in replicative senescence, and propose DNA degradation as a therapeutic approach to remove intrinsic DNA and revert inflammation associated with aging.
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Affiliation(s)
- Yuk Yuen Lan
- Center for Cancer Research; Massachusetts General Hospital; Charlestown Massachusetts
- Broad Institute; Cambridge Massachusetts
- Department of Medicine; Harvard Medical School; Boston Massachusetts
| | - James M. Heather
- Center for Cancer Research; Massachusetts General Hospital; Charlestown Massachusetts
| | | | - Christopher Stuart Garris
- Center for Systems Biology; Massachusetts General Hospital; Boston Massachusetts
- Graduate Program in Immunology; Harvard Medical School; Boston Massachusetts
| | - David Lieb
- Broad Institute; Cambridge Massachusetts
| | | | - Nir Hacohen
- Center for Cancer Research; Massachusetts General Hospital; Charlestown Massachusetts
- Broad Institute; Cambridge Massachusetts
- Department of Medicine; Harvard Medical School; Boston Massachusetts
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73
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Chua HL, Artur Plett P, Fisher A, Sampson CH, Vemula S, Feng H, Sellamuthu R, Wu T, MacVittie TJ, Orschell CM. Lifelong Residual bone Marrow Damage in Murine Survivors of the Hematopoietic Acute Radiation Syndrome (H-ARS): A Compilation of Studies Comprising the Indiana University Experience. HEALTH PHYSICS 2019; 116:546-557. [PMID: 30789496 PMCID: PMC6388630 DOI: 10.1097/hp.0000000000000950] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Accurate analyses of the delayed effects of acute radiation exposure in survivors of the hematopoietic acute radiation syndrome are hampered by low numbers of mice for examination due to high lethality from the acute syndrome, increased morbidity and mortality in survivors, high cost of husbandry for long-term studies, biological variability, and inconsistencies of models from different laboratories complicating meta-analyses. To address this, a compilation of 38 similar hematopoietic acute radiation syndrome studies conducted over a 7-y period in the authors' laboratory, comprising more than 1,500 irradiated young adult C57BL/6 mice and almost 600 day-30 survivors, was assessed for hematopoietic delayed effects of acute radiation exposure at various times up to 30 mo of age. Significant loss of long-term repopulating potential of phenotypically defined primitive hematopoietic stem cells was documented in hematopoietic acute radiation syndrome survivors, as well as significant decreases in all hematopoietic lineages in peripheral blood, prominent myeloid skew, significantly decreased bone marrow cellularity, and numbers of lineage-negative Sca-1+ cKit+ CD150+ cells (KSL CD150+; the phenotype known to be enriched for hematopoietic stem cells), and increased cycling of KSL CD150+ cells. Studies interrogating the phenotype of bone marrow cells capable of initiation of suspension cultures and engraftment in competitive transplantation assays documented the phenotype of hematopoietic stem cells in hematopoietic acute radiation syndrome survivors to be the same as that in nonirradiated age-matched controls. This compilation study adds rigor and validity to our initial findings of persistent hematopoietic dysfunction in hematopoietic acute radiation syndrome survivors that arises at the level of the hematopoietic stem cell and which affects all classes of hematopoietic cells for the life of the survivor.
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Affiliation(s)
- Hui Lin Chua
- : Indiana University School of Medicine, Indianapolis, IN, USA
| | - P. Artur Plett
- : Indiana University School of Medicine, Indianapolis, IN, USA
| | - Alexa Fisher
- : Indiana University School of Medicine, Indianapolis, IN, USA
| | | | - Sasidhar Vemula
- : Indiana University School of Medicine, Indianapolis, IN, USA
| | - Hailin Feng
- : Indiana University School of Medicine, Indianapolis, IN, USA
| | | | - Tong Wu
- : Indiana University School of Medicine, Indianapolis, IN, USA
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74
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Lee J, Yoon SR, Choi I, Jung H. Causes and Mechanisms of Hematopoietic Stem Cell Aging. Int J Mol Sci 2019; 20:ijms20061272. [PMID: 30871268 PMCID: PMC6470724 DOI: 10.3390/ijms20061272] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2019] [Revised: 03/08/2019] [Accepted: 03/09/2019] [Indexed: 12/11/2022] Open
Abstract
Many elderly people suffer from hematological diseases known to be highly age-dependent. Hematopoietic stem cells (HSCs) maintain the immune system by producing all blood cells throughout the lifetime of an organism. Recent reports have suggested that HSCs are susceptible to age-related stress and gradually lose their self-renewal and regeneration capacity with aging. HSC aging is driven by cell-intrinsic and -extrinsic factors that result in the disruption of the immune system. Thus, the study of HSC aging is important to our understanding of age-related immune diseases and can also provide potential strategies to improve quality of life in the elderly. In this review, we delineate our understanding of the phenotypes, causes, and molecular mechanisms involved in HSC aging.
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Affiliation(s)
- Jungwoon Lee
- Environmental Disease Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), 125 Gwahak-ro, Yuseong-gu, Daejeon 34141, Korea.
| | - Suk Ran Yoon
- Immunotherapy Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), 125 Gwahak-ro, Yuseong-gu, Daejeon 34141, Korea.
- Department of Functional Genomics, University of Science and Technology (UST), 113 Gwahak-ro, Yuseong-gu, Daejeon 34113, Korea.
| | - Inpyo Choi
- Immunotherapy Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), 125 Gwahak-ro, Yuseong-gu, Daejeon 34141, Korea.
- Department of Functional Genomics, University of Science and Technology (UST), 113 Gwahak-ro, Yuseong-gu, Daejeon 34113, Korea.
| | - Haiyoung Jung
- Immunotherapy Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), 125 Gwahak-ro, Yuseong-gu, Daejeon 34141, Korea.
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75
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Hoffman CM, Han J, Calvi LM. Impact of aging on bone, marrow and their interactions. Bone 2019; 119:1-7. [PMID: 30010082 DOI: 10.1016/j.bone.2018.07.012] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/20/2018] [Revised: 07/12/2018] [Accepted: 07/12/2018] [Indexed: 12/24/2022]
Abstract
Hematopoiesis in land dwelling vertebrates and marine mammals occurs within the bone marrow, continually providing mature progeny over the course of an organism's lifetime. This conserved dependency highlights the critical relationship between these two organs, yet the skeletal and hematopoietic systems are often thought of as separate. In fact, data are beginning to show that skeletal disease pathogenesis influences hematopoiesis and viceversa, offering novel opportunities to approach disease affecting bone and blood. With a growing global population of aged individuals, interest has focused on cell autonomous changes in hematopoietic and skeletal systems that result in dysfunction. The purpose of this review is to summarize the literature on aging effects in both fields, and provide critical examples of organ cross-talk in the aging process.
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Affiliation(s)
- Corey M Hoffman
- University of Rochester Medical Center, Rochester, NY, United States of America
| | - Jimin Han
- University of Rochester Medical Center, Rochester, NY, United States of America
| | - Laura M Calvi
- University of Rochester Medical Center, Rochester, NY, United States of America.
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76
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Keenan CR, Allan RS. Epigenomic drivers of immune dysfunction in aging. Aging Cell 2019; 18:e12878. [PMID: 30488545 PMCID: PMC6351880 DOI: 10.1111/acel.12878] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2018] [Revised: 09/26/2018] [Accepted: 10/18/2018] [Indexed: 12/17/2022] Open
Abstract
Aging inevitably leads to reduced immune function, leaving the elderly more susceptible to infections, less able to respond to pathogen challenges, and less responsive to preventative vaccinations. No cell type is exempt from the ravages of age, and extensive studies have found age-related alterations in the frequencies and functions of both stem and progenitor cells, as well as effector cells of both the innate and adaptive immune systems. The intrinsic functional reduction in immune competence is also associated with low-grade chronic inflammation, termed "inflamm-aging," which further perpetuates immune dysfunction. While many of these age-related cellular changes are well characterized, understanding the molecular changes that underpin the functional decline has proven more difficult. Changes in chromatin are increasingly appreciated as a causative mechanism of cellular and organismal aging across species. These changes include increased genomic instability through loss of heterochromatin and increased DNA damage, telomere attrition, and epigenetic alterations. In this review, we discuss the connections between chromatin, immunocompetence, and the loss of function associated with mammalian immune aging. Through understanding the molecular events which underpin the phenotypic changes observed in the aged immune system, it is hoped that the aged immune system can be restored to provide youthful immunity once more.
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Affiliation(s)
- Christine R. Keenan
- The Walter and Eliza Hall Institute of Medical Research Parkville Victoria Australia
- Department of Medical Biology The University of Melbourne Parkville Victoria Australia
| | - Rhys S. Allan
- The Walter and Eliza Hall Institute of Medical Research Parkville Victoria Australia
- Department of Medical Biology The University of Melbourne Parkville Victoria Australia
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77
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Ogrodnik M, Salmonowicz H, Gladyshev VN. Integrating cellular senescence with the concept of damage accumulation in aging: Relevance for clearance of senescent cells. Aging Cell 2019; 18:e12841. [PMID: 30346102 PMCID: PMC6351832 DOI: 10.1111/acel.12841] [Citation(s) in RCA: 98] [Impact Index Per Article: 19.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2018] [Revised: 07/31/2018] [Accepted: 08/20/2018] [Indexed: 12/12/2022] Open
Abstract
Understanding the aging process and ways to manipulate it is of major importance for biology and medicine. Among the many aging theories advanced over the years, the concept most consistent with experimental evidence posits the buildup of numerous forms of molecular damage as a foundation of the aging process. Here, we discuss that this concept integrates well with recent findings on cellular senescence, offering a novel view on the role of senescence in aging and age‐related disease. Cellular senescence has a well‐established role in cellular aging, but its impact on the rate of organismal aging is less defined. One of the most prominent features of cellular senescence is its association with macromolecular damage. The relationship between cell senescence and damage concerns both damage as a molecular signal of senescence induction and accelerated accumulation of damage in senescent cells. We describe the origin, regulatory mechanisms, and relevance of various damage forms in senescent cells. This view on senescent cells as carriers and inducers of damage puts new light on senescence, considering it as a significant contributor to the rise in organismal damage. Applying these ideas, we critically examine current evidence for a role of cellular senescence in aging and age‐related diseases. We also discuss the differential impact of longevity interventions on senescence burden and other types of age‐related damage. Finally, we propose a model on the role of aging‐related damage accumulation and the rate of aging observed upon senescent cell clearance.
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Affiliation(s)
- Mikolaj Ogrodnik
- Institute for Cell and Molecular Biosciences; Newcastle University Institute for Ageing; Newcastle upon Tyne UK
| | - Hanna Salmonowicz
- Institute for Cell and Molecular Biosciences; Newcastle University Institute for Ageing; Newcastle upon Tyne UK
| | - Vadim N. Gladyshev
- Division of Genetics; Department of Medicine; Brigham and Women's Hospital and Harvard Medical School; Boston Massachusetts
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78
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Jelinkova S, Fojtik P, Kohutova A, Vilotic A, Marková L, Pesl M, Jurakova T, Kruta M, Vrbsky J, Gaillyova R, Valášková I, Frák I, Lacampagne A, Forte G, Dvorak P, Meli AC, Rotrekl V. Dystrophin Deficiency Leads to Genomic Instability in Human Pluripotent Stem Cells via NO Synthase-Induced Oxidative Stress. Cells 2019; 8:cells8010053. [PMID: 30650618 PMCID: PMC6356905 DOI: 10.3390/cells8010053] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2018] [Revised: 12/29/2018] [Accepted: 01/11/2019] [Indexed: 11/16/2022] Open
Abstract
Recent data on Duchenne muscular dystrophy (DMD) show myocyte progenitor's involvement in the disease pathology often leading to the DMD patient's death. The molecular mechanism underlying stem cell impairment in DMD has not been described. We created dystrophin-deficient human pluripotent stem cell (hPSC) lines by reprogramming cells from two DMD patients, and also by introducing dystrophin mutation into human embryonic stem cells via CRISPR/Cas9. While dystrophin is expressed in healthy hPSC, its deficiency in DMD hPSC lines induces the release of reactive oxygen species (ROS) through dysregulated activity of all three isoforms of nitric oxide synthase (further abrev. as, NOS). NOS-induced ROS release leads to DNA damage and genomic instability in DMD hPSC. We were able to reduce both the ROS release as well as DNA damage to the level of wild-type hPSC by inhibiting NOS activity.
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Affiliation(s)
- Sarka Jelinkova
- Department of Biology, Faculty of Medicine, Masaryk University, 625 00 Brno, Czech Republic.
- International Clinical Research Center ICRC, St. Anne's University Hospital Brno, 602 00 Brno, Czech Republic.
| | - Petr Fojtik
- Department of Biology, Faculty of Medicine, Masaryk University, 625 00 Brno, Czech Republic.
| | - Aneta Kohutova
- Department of Biology, Faculty of Medicine, Masaryk University, 625 00 Brno, Czech Republic.
- International Clinical Research Center ICRC, St. Anne's University Hospital Brno, 602 00 Brno, Czech Republic.
| | - Aleksandra Vilotic
- Department of Biology, Faculty of Medicine, Masaryk University, 625 00 Brno, Czech Republic.
| | - Lenka Marková
- Department of Biology, Faculty of Medicine, Masaryk University, 625 00 Brno, Czech Republic.
| | - Martin Pesl
- Department of Biology, Faculty of Medicine, Masaryk University, 625 00 Brno, Czech Republic.
- International Clinical Research Center ICRC, St. Anne's University Hospital Brno, 602 00 Brno, Czech Republic.
- 1st department of Internal Medicine-Cardioangiology, Faculty of Medicine, Masaryk University, 602 00 Brno, Czech Republic.
| | - Tereza Jurakova
- Department of Biology, Faculty of Medicine, Masaryk University, 625 00 Brno, Czech Republic.
| | - Miriama Kruta
- Department of Biology, Faculty of Medicine, Masaryk University, 625 00 Brno, Czech Republic.
| | - Jan Vrbsky
- International Clinical Research Center ICRC, St. Anne's University Hospital Brno, 602 00 Brno, Czech Republic.
| | - Renata Gaillyova
- Department of Biology, Faculty of Medicine, Masaryk University, 625 00 Brno, Czech Republic.
- Department of Clinical Genetics, University hospital Brno, 613 00 Brno, Czech Republic.
| | - Iveta Valášková
- Department of Biology, Faculty of Medicine, Masaryk University, 625 00 Brno, Czech Republic.
- Department of Clinical Genetics, University hospital Brno, 613 00 Brno, Czech Republic.
| | - Ivan Frák
- Department of Biology, Faculty of Medicine, Masaryk University, 625 00 Brno, Czech Republic.
| | - Alain Lacampagne
- PhyMedExp, INSERM, University of Montpellier, CNRS, 342 95 Montpellier CEDEX 5, France.
| | - Giancarlo Forte
- International Clinical Research Center ICRC, St. Anne's University Hospital Brno, 602 00 Brno, Czech Republic.
| | - Petr Dvorak
- Department of Biology, Faculty of Medicine, Masaryk University, 625 00 Brno, Czech Republic.
- International Clinical Research Center ICRC, St. Anne's University Hospital Brno, 602 00 Brno, Czech Republic.
| | - Albano C Meli
- Department of Biology, Faculty of Medicine, Masaryk University, 625 00 Brno, Czech Republic.
- PhyMedExp, INSERM, University of Montpellier, CNRS, 342 95 Montpellier CEDEX 5, France.
| | - Vladimir Rotrekl
- Department of Biology, Faculty of Medicine, Masaryk University, 625 00 Brno, Czech Republic.
- International Clinical Research Center ICRC, St. Anne's University Hospital Brno, 602 00 Brno, Czech Republic.
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79
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Swiecicki PL, Brennan JR, Mierzwa M, Spector ME, Brenner JC. Head and Neck Squamous Cell Carcinoma Detection and Surveillance: Advances of Liquid Biomarkers. Laryngoscope 2018; 129:1836-1843. [PMID: 30570748 DOI: 10.1002/lary.27725] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/05/2018] [Indexed: 12/12/2022]
Abstract
Head and neck squamous cell carcinomas are aggressive tumors that often present at advanced stage in difficult-to-biopsy regions of the head and neck. With the rapid move to analyze circulating tumor DNA (ctDNA) to either detect cancer or monitor disease progression and response to therapy, we have designed this article as a primer to understand the recent studies that support a transition to use these circulating biomarkers as a part of routine clinical care. Whereas some technical challenges still need to be overcome, the utility of ctDNA in cancer care is already evident from these early studies. Therefore, it is critical to understand recent advances in this area as well as emerging questions that need to be addressed as these biomarkers move closer to enhancing routine clinical care paradigms. Laryngoscope, 129:1836-1843, 2019.
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Affiliation(s)
- Paul L Swiecicki
- Department of Internal Medicine, Division of Hematology and Oncology, University of Michigan Medical School, Ann Arbor, Michigan, U.S.A.,Comprehensive Cancer Center, University of Michigan Medical School, Ann Arbor, Michigan, U.S.A
| | - Julia R Brennan
- Department of Otolaryngology-Head and Neck Surgery, University of Michigan Medical School, Ann Arbor, Michigan, U.S.A
| | - Michelle Mierzwa
- Department of Radiation Oncology, University of Michigan Medical School, Ann Arbor, Michigan, U.S.A.,Comprehensive Cancer Center, University of Michigan Medical School, Ann Arbor, Michigan, U.S.A
| | - Matthew E Spector
- Department of Otolaryngology-Head and Neck Surgery, University of Michigan Medical School, Ann Arbor, Michigan, U.S.A
| | - J Chad Brenner
- Department of Otolaryngology-Head and Neck Surgery, University of Michigan Medical School, Ann Arbor, Michigan, U.S.A.,Program in Cellular and Molecular Biology, University of Michigan Medical School, Ann Arbor, Michigan, U.S.A.,Department of Pharmacology, University of Michigan Medical School, Ann Arbor, Michigan, U.S.A.,Comprehensive Cancer Center, University of Michigan Medical School, Ann Arbor, Michigan, U.S.A
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80
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Chaudhury S, O'Connor C, Cañete A, Bittencourt-Silvestre J, Sarrou E, Prendergast Á, Choi J, Johnston P, Wells CA, Gibson B, Keeshan K. Age-specific biological and molecular profiling distinguishes paediatric from adult acute myeloid leukaemias. Nat Commun 2018; 9:5280. [PMID: 30538250 PMCID: PMC6290074 DOI: 10.1038/s41467-018-07584-1] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2018] [Accepted: 11/08/2018] [Indexed: 12/13/2022] Open
Abstract
Acute myeloid leukaemia (AML) affects children and adults of all ages. AML remains one of the major causes of death in children with cancer and for children with AML relapse is the most common cause of death. Here, by modelling AML in vivo we demonstrate that AML is discriminated by the age of the cell of origin. Young cells give rise to myeloid, lymphoid or mixed phenotype acute leukaemia, whereas adult cells give rise exclusively to AML, with a shorter latency. Unlike adult, young AML cells do not remodel the bone marrow stroma. Transcriptional analysis distinguishes young AML by the upregulation of immune pathways. Analysis of human paediatric AML samples recapitulates a paediatric immune cell interaction gene signature, highlighting two genes, RGS10 and FAM26F as prognostically significant. This work advances our understanding of paediatric AML biology, and provides murine models that offer the potential for developing paediatric specific therapeutic strategies. Acute myeloid leukaemia (AML) affects people of all ages. Here, the authors model AML in vivo and demonstrate that the age of the cell of origin impacts leukaemia development and the genetic signature where adult cells of origin give rise exclusively to AML and young cells of origin give rise to myeloid, lymphoid or mixed phenotype acute leukaemia.
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Affiliation(s)
- Shahzya Chaudhury
- Paul O'Gorman Leukaemia Research Centre, Institute of Cancer Sciences, University of Glasgow, Glasgow, UK.,Royal Hospital for Children, Glasgow, Scotland, UK
| | - Caitríona O'Connor
- Paul O'Gorman Leukaemia Research Centre, Institute of Cancer Sciences, University of Glasgow, Glasgow, UK
| | - Ana Cañete
- Paul O'Gorman Leukaemia Research Centre, Institute of Cancer Sciences, University of Glasgow, Glasgow, UK
| | | | - Evgenia Sarrou
- Paul O'Gorman Leukaemia Research Centre, Institute of Cancer Sciences, University of Glasgow, Glasgow, UK
| | - Áine Prendergast
- Paul O'Gorman Leukaemia Research Centre, Institute of Cancer Sciences, University of Glasgow, Glasgow, UK
| | - Jarny Choi
- Centre for Stem Cell Systems, Faculty of Medicine, Dentistry and Health Sciences, The University of Melbourne, Melbourne, Australia
| | - Pamela Johnston
- School of Veterinary Medicine, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, UK
| | - Christine A Wells
- Centre for Stem Cell Systems, Faculty of Medicine, Dentistry and Health Sciences, The University of Melbourne, Melbourne, Australia
| | | | - Karen Keeshan
- Paul O'Gorman Leukaemia Research Centre, Institute of Cancer Sciences, University of Glasgow, Glasgow, UK.
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81
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Ochola DO, Sharif R, Bedford JS, Keefe TJ, Kato TA, Fallgren CM, Demant P, Costes SV, Weil MM. Persistence of Gamma-H2AX Foci in Bronchial Cells Correlates with Susceptibility to Radiation Associated Lung Cancer in Mice. Radiat Res 2018; 191:67-75. [PMID: 30398394 DOI: 10.1667/rr14979.1] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The risk of developing radiation-induced lung cancer differs between different strains of mice, but the underlying cause of the strain differences is unknown. Strains of mice also differ in how quickly they repair radiation-induced DNA double-strand breaks (DSBs). We assayed mouse strains from the CcS/Dem recombinant congenic strain set for their efficacy in repairing DNA DSBs during protracted irradiation. We measured unrepaired γ-H2AX radiation-induced foci (RIF), which persisted after chronic 24-h gamma irradiation, as a surrogate marker for repair efficiency in bronchial epithelial cells for 17 of the CcS/Dem strains and the BALB/c founder strain. We observed a very strong correlation (R2 = 79.18%, P < 0.001) between the level of unrepaired RIF and radiogenic lung cancer incidence measured in the same strains. Interestingly, spontaneous levels of foci in nonirradiated mice also showed good correlation with lung cancer incidence when incidence data from male and female mice were combined. These results suggest that genetic differences in DNA repair capacity largely account for differing susceptibilities to radiation-induced lung cancer among CcS/Dem mouse strains, and that high levels of spontaneous DNA damage are also a relatively good marker of cancer predisposition. In a smaller pilot study, we found that the repair capacity measured in peripheral blood leucocytes also correlated well with radiogenic lung cancer susceptibility, raising the possibility that the assay could be used to detect radiogenic lung cancer susceptibility in humans.
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Affiliation(s)
- Donasian O Ochola
- a Department of Environmental and Radiological Health Sciences, Colorado State University, Fort Collins, Colorado
| | - Rabab Sharif
- a Department of Environmental and Radiological Health Sciences, Colorado State University, Fort Collins, Colorado
| | - Joel S Bedford
- a Department of Environmental and Radiological Health Sciences, Colorado State University, Fort Collins, Colorado
| | - Thomas J Keefe
- a Department of Environmental and Radiological Health Sciences, Colorado State University, Fort Collins, Colorado
| | - Takamitsu A Kato
- a Department of Environmental and Radiological Health Sciences, Colorado State University, Fort Collins, Colorado
| | - Christina M Fallgren
- a Department of Environmental and Radiological Health Sciences, Colorado State University, Fort Collins, Colorado
| | - Peter Demant
- b Department of Molecular and Cellular Biology, Roswell Park Cancer Institute, Buffalo, New York
| | - Sylvain V Costes
- c Biosciences Division, NASA Ames Research Center, Mountain View, California
| | - Michael M Weil
- a Department of Environmental and Radiological Health Sciences, Colorado State University, Fort Collins, Colorado
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Abstract
Purpose of Review Clonal hematopoiesis of indeterminate potential (CHIP) is a common, age-associated condition characterized by the acquisition of somatic mutations. This concise review explores our current understanding of the mechanisms that influence the development of clonality with aging and its potential malignant and non-malignant clinical implications. Recent Findings Aging of the hematopoietic system results in phenotypic changes that favor clonal dominance. Cell-extrinsic factors provide additional selective pressures that further shape clonal architecture. Even so, small clones with candidate driver mutations appear to be ubiquitous with age and largely benign in the absence of strong selective pressures. Benign clonal expansion may compensate for the loss of regenerative HSC capacity as we age. Summary CHIP is a marker of aging that reflects the biologic interplay between HSC aging and cell-extrinsic factors. The clinical significance of CHIP is highly variable and dependent on clinical context. Distinguishing the causal relationships and confounding factors that regulate clonal behavior will be essential to define the mechanistic role of CHIP in aging and potentially mitigate its clinical consequences.
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Affiliation(s)
- Soo J Park
- Moores Cancer Center, University of California, San Diego, La Jolla, CA
| | - Rafael Bejar
- Moores Cancer Center, University of California, San Diego, La Jolla, CA
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83
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Fali T, Fabre-Mersseman V, Yamamoto T, Bayard C, Papagno L, Fastenackels S, Zoorab R, Koup RA, Boddaert J, Sauce D, Appay V. Elderly human hematopoietic progenitor cells express cellular senescence markers and are more susceptible to pyroptosis. JCI Insight 2018; 3:95319. [PMID: 29997288 DOI: 10.1172/jci.insight.95319] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2017] [Accepted: 05/31/2018] [Indexed: 01/24/2023] Open
Abstract
The maintenance of effective immunity over time is dependent on the capacity of hematopoietic stem cells (HSCs) to sustain the pool of immunocompetent mature cells. Decline of immune competence with old age may stem from HSC defects, including reduced self-renewal potential and impaired lymphopoiesis, as suggested in murine models. To obtain further insights into aging-related alteration of hematopoiesis, we performed a comprehensive study of blood hematopoietic progenitor cells (HPCs) from older humans. In the elderly, HPCs present active oxidative phosphorylation and are pressed to enter cell cycling. However, p53-p21 and p15 cell senescence pathways, associated with telomerase activity deficiency, strong telomere attrition, and oxidative stress, are engaged, thus limiting cell cycling. Moreover, survival of old HPCs is impacted by pyroptosis, an inflammatory form of programmed cell death. Lastly, telomerase activity deficiency and telomere length attrition of old HPCs may be passed on to progeny cells such as naive T lymphocytes, further highlighting the poor hematopoietic potential of the elderly. This pre-senescent profile is characteristic of the multiple intrinsic and extrinsic factors affecting HPCs in elderly individuals and represents a major obstacle in terms of immune reconstitution and efficacy with advanced age.
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Affiliation(s)
- Tinhinane Fali
- Sorbonne Université, INSERM, Centre d'Immunologie et des Maladies Infectieuses (CIMI-Paris), Paris, France
| | - Véronique Fabre-Mersseman
- Sorbonne Université, INSERM, Centre d'Immunologie et des Maladies Infectieuses (CIMI-Paris), Paris, France
| | - Takuya Yamamoto
- Immunology Laboratory, Vaccine Research Center, National Institute of Allergy and Infectious Diseases, NIH, Bethesda, Maryland, USA.,Laboratory of Immunosenescence, National Institutes of Biomedical Innovation, Health and Nutrition, Ibaraki-City, Osaka, Japan.,Center for AIDS Research, Kumamoto University, Kumamoto, Japan
| | - Charles Bayard
- Sorbonne Université, INSERM, Centre d'Immunologie et des Maladies Infectieuses (CIMI-Paris), Paris, France
| | - Laura Papagno
- Sorbonne Université, INSERM, Centre d'Immunologie et des Maladies Infectieuses (CIMI-Paris), Paris, France
| | - Solène Fastenackels
- Sorbonne Université, INSERM, Centre d'Immunologie et des Maladies Infectieuses (CIMI-Paris), Paris, France
| | - Rima Zoorab
- Sorbonne Université, INSERM, Centre d'Immunologie et des Maladies Infectieuses (CIMI-Paris), Paris, France
| | - Richard A Koup
- Immunology Laboratory, Vaccine Research Center, National Institute of Allergy and Infectious Diseases, NIH, Bethesda, Maryland, USA
| | - Jacques Boddaert
- AP-HP, Hôpital Pitié-Salpêtrière, Service de Gériatrie, Paris, France
| | - Delphine Sauce
- Sorbonne Université, INSERM, Centre d'Immunologie et des Maladies Infectieuses (CIMI-Paris), Paris, France
| | - Victor Appay
- Sorbonne Université, INSERM, Centre d'Immunologie et des Maladies Infectieuses (CIMI-Paris), Paris, France.,International Research Center of Medical Sciences (IRCMS), Kumamoto University, Kumamoto, Japan
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84
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El-Zein RA, Etzel CJ, Munden RF. The cytokinesis-blocked micronucleus assay as a novel biomarker for selection of lung cancer screening participants. Transl Lung Cancer Res 2018; 7:336-346. [PMID: 30050771 DOI: 10.21037/tlcr.2018.05.09] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Background Despite the promising results of the National Lung Screening Trial in reducing lung cancer mortality among high risk smokers, several challenges remain to be addressed. These include the high false positive rates and the large number of smokers screened in order to prevent one lung cancer death. In addition, host genetic susceptibility has not been integrated into selection of who should be screened. These challenges highlight the need to develop robust ways to identify susceptible smokers for appropriate screening. Methods We used the cytokinesis block micronucleus (CBMN) assay to assess smoking induced genetic instability among NLST participants. Blood cultures were prepared at time of entry into the screening study and DNA damage was recorded as the frequency of binucleated nucleoplasmic bridges and micronuclei. Low dose CT (LDCT) and chest X-ray (CXR) image findings were available upon unblinding of the NLST study and imaging data were merged with blood marker data for statistical analysis. Results A total of 641 participants were included in this study. The frequency of the CBMN endpoints at time of entry into the study was significantly higher among study participants who had a positive finding during the 3-year screening or reported lung cancer at the end of the follow-up period as compared to participants who were negative. Growth curve models were used to compare trajectories of change in CBMN endpoints between entry into the study and end-of-screening period. A statistically significant increase was predicted for CBMN endpoints among the study participants who were positive versus those who remained negative at the end-of-screening period (P<0.001). Conclusions Genetic instability biomarkers have the potential of facilitating the identification of genetically susceptible high-risk smokers who would benefit from targeted lung screening programs.
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Affiliation(s)
- Randa A El-Zein
- Department of Radiology, Houston Methodist Research Institute, Houston, Texas, USA
| | | | - Reginald F Munden
- Wake Forest Baptist Health and School of Medicine, Medical Center Blvd, Winston-Salem, NC, USA
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Schuster B, Ellmann A, Mayo T, Auer J, Haas M, Hecht M, Fietkau R, Distel LV. Rate of individuals with clearly increased radiosensitivity rise with age both in healthy individuals and in cancer patients. BMC Geriatr 2018; 18:105. [PMID: 29728069 PMCID: PMC5935967 DOI: 10.1186/s12877-018-0799-y] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2017] [Accepted: 04/30/2018] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND The question of an age dependence of individual radiosensitivity has only marginally been studied so far. Therefore, we analyzed blood samples of healthy individuals and cancer patients of different ages to determine individual radiosensitivity. METHODS Ex vivo irradiated blood samples of 595 individuals were tested. Chromosomes 1, 2 and 4 were stained by 3-color fluorescence in situ hybridization and aberrations were analyzed. Radiosensitivity was determined by the mean breaks per metaphase (B/M). RESULTS Healthy individuals (mean age 50.7 years) had an average B/M value of 0.42 ± 0.104 and an increase of 0.0014B/M per year. The patients (mean age 60.4 years) had an average B/M value of 0.44 ± 0.150 and radiosensitivity did not change with age. In previous studies we found that from a value of 0.6B/M on an individual is considered to be distinctly radiosensitive. The portion of radiosensitive individuals (B/M > 0.6) increased in both cohorts with age. CONCLUSION Individual radiosensitivity rises continuously with age, yet with strong interindividual variation. No age related increase of radiosensitivity can be demonstrated in patients due to the strong interindividual variation. However among old cancer patients there is a higher probability to have patients with clearly increased radiosensitivity than at younger age.
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Affiliation(s)
- Barbara Schuster
- Department of Radiation Oncology, University Hospital Erlangen Friedrich-Alexander-Universität Erlangen-Nürnberg, Universitätsstr. 27, 91054, Erlangen, Germany
| | - Anna Ellmann
- Department of Radiation Oncology, University Hospital Erlangen Friedrich-Alexander-Universität Erlangen-Nürnberg, Universitätsstr. 27, 91054, Erlangen, Germany
| | - Theresa Mayo
- Department of Radiation Oncology, University Hospital Erlangen Friedrich-Alexander-Universität Erlangen-Nürnberg, Universitätsstr. 27, 91054, Erlangen, Germany
| | - Judith Auer
- Department of Radiation Oncology, University Hospital Erlangen Friedrich-Alexander-Universität Erlangen-Nürnberg, Universitätsstr. 27, 91054, Erlangen, Germany
| | - Matthias Haas
- Department of Radiology, Charité Universitätsmedizin, Berlin, Germany
| | - Markus Hecht
- Department of Radiation Oncology, University Hospital Erlangen Friedrich-Alexander-Universität Erlangen-Nürnberg, Universitätsstr. 27, 91054, Erlangen, Germany
| | - Rainer Fietkau
- Department of Radiation Oncology, University Hospital Erlangen Friedrich-Alexander-Universität Erlangen-Nürnberg, Universitätsstr. 27, 91054, Erlangen, Germany
| | - Luitpold V Distel
- Department of Radiation Oncology, University Hospital Erlangen Friedrich-Alexander-Universität Erlangen-Nürnberg, Universitätsstr. 27, 91054, Erlangen, Germany.
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86
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Durdik M, Kosik P, Kruzliakova J, Jakl L, Markova E, Belyaev I. Hematopoietic stem/progenitor cells are less prone to undergo apoptosis than lymphocytes despite similar DNA damage response. Oncotarget 2018; 8:48846-48853. [PMID: 28415626 PMCID: PMC5564729 DOI: 10.18632/oncotarget.16455] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2016] [Accepted: 03/15/2017] [Indexed: 12/13/2022] Open
Abstract
Hematopoietic stem/progenitor CD34+ cells (HSPC) give rise to all types of blood cells and represent a key cellular target for origination of leukemia. Apoptosis and repair of DNA double strand breaks (DSB) are vital processes in leukemogenesis. High doses of ionizing radiation are the best known agent that induces leukemia, but less is known about the leukemogenic potential of low doses. While umbilical cord blood (UCB) serves as a valuable source of the HSPC for both research and clinics, the data on DNA damage response and apoptosis in UCB HSPC are very limited. We have studied apoptosis and DSB in the UCB-derived CD34+HSPC and CD34- lymphocytes at different time points post-irradiation with low and therapeutic doses of γ-rays. DSB were enumerated with γH2AX foci using imaging flow cytometry. Different stages of apoptosis were analyzed using Annexin/7-AAD assay and γH2AX pan-staining by flow cytometry and imaging flow cytometry, respectively. Our results have consistently shown significantly higher resistance of CD34+ stem/progenitor cells to endogenous and radiation induced apoptosis as compared to CD34- lymphocytes. At the same time, no statistically significant difference was found in DSB repair between HSPC and lymphocytes as enumerated by the γH2AX foci. To conclude, we show for the first time that hematopoietic stem/progenitor cells are less prone to undergo apoptosis than lymphocytes what may be accounted for higher expression of anti-apoptotic proteins in CD34+ cells but was unlikely dealt with DSB repair.
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Affiliation(s)
- Matus Durdik
- Laboratory of Radiobiology, Cancer Research Institute, Biomedical Center, Slovak Academy of Sciences, Bratislava, Slovakia
| | - Pavol Kosik
- Laboratory of Radiobiology, Cancer Research Institute, Biomedical Center, Slovak Academy of Sciences, Bratislava, Slovakia
| | - Jana Kruzliakova
- Laboratory of Radiobiology, Cancer Research Institute, Biomedical Center, Slovak Academy of Sciences, Bratislava, Slovakia
| | - Lukas Jakl
- Laboratory of Radiobiology, Cancer Research Institute, Biomedical Center, Slovak Academy of Sciences, Bratislava, Slovakia
| | - Eva Markova
- Laboratory of Radiobiology, Cancer Research Institute, Biomedical Center, Slovak Academy of Sciences, Bratislava, Slovakia
| | - Igor Belyaev
- Laboratory of Radiobiology, Cancer Research Institute, Biomedical Center, Slovak Academy of Sciences, Bratislava, Slovakia
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87
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Lidzbarsky G, Gutman D, Shekhidem HA, Sharvit L, Atzmon G. Genomic Instabilities, Cellular Senescence, and Aging: In Vitro, In Vivo and Aging-Like Human Syndromes. Front Med (Lausanne) 2018; 5:104. [PMID: 29719834 PMCID: PMC5913290 DOI: 10.3389/fmed.2018.00104] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2018] [Accepted: 03/29/2018] [Indexed: 12/20/2022] Open
Abstract
As average life span and elderly people prevalence in the western world population is gradually increasing, the incidence of age-related diseases such as cancer, heart diseases, diabetes, and dementia is increasing, bearing social and economic consequences worldwide. Understanding the molecular basis of aging-related processes can help extend the organism’s health span, i.e., the life period in which the organism is free of chronic diseases or decrease in basic body functions. During the last few decades, immense progress was made in the understanding of major components of aging and healthy aging biology, including genomic instability, telomere attrition, epigenetic changes, proteostasis, nutrient sensing, mitochondrial dysfunction, cellular senescence, stem cell exhaustion, and intracellular communications. This progress has been made by three spear-headed strategies: in vitro (cell and tissue culture from various sources), in vivo (includes diverse model and non-model organisms), both can be manipulated and translated to human biology, and the study of aging-like human syndromes and human populations. Herein, we will focus on current repository of genomic “senescence” stage of aging, which includes health decline, structural changes of the genome, faulty DNA damage response and DNA damage, telomere shortening, and epigenetic alterations. Although aging is a complex process, many of the “hallmarks” of aging are directly related to DNA structure and function. This review will illustrate the variety of these studies, done in in vitro, in vivo and human levels, and highlight the unique potential and contribution of each research level and eventually the link between them.
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Affiliation(s)
| | - Danielle Gutman
- Department of Human Biology, University of Haifa, Haifa, Israel
| | | | - Lital Sharvit
- Department of Human Biology, University of Haifa, Haifa, Israel
| | - Gil Atzmon
- Department of Human Biology, University of Haifa, Haifa, Israel
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88
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Noda A. Radiation-induced unrepairable DSBs: their role in the late effects of radiation and possible applications to biodosimetry. JOURNAL OF RADIATION RESEARCH 2018; 59:ii114-ii120. [PMID: 29281054 PMCID: PMC5941153 DOI: 10.1093/jrr/rrx074] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2017] [Revised: 08/30/2017] [Indexed: 05/21/2023]
Abstract
Although the vast majority of DNA damage induced by radiation exposure disappears rapidly, some lesions remain in the cell nucleus in very small quantities for days to months. These lesions may cause a considerable threat to an organism and include certain types of DNA double-strand breaks (DSBs) called 'unrepairable DSBs'. Unrepairable DSBs are thought to cause persistent malfunctioning of cells and tissues or cause late effects of radiation, especially the induction of delayed cell death, mutation, senescence, or carcinogenesis. Moreover, the measurement of unrepairable DSBs could potentially be used for retrospective biodosimetry or for identifying individuals at greater risk for developing the adverse effects associated with radiotherapy or chemotherapy. This review summarizes the concept of unrepairable DSBs in the context of persistent repair foci formed at DSBs.
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Affiliation(s)
- Asao Noda
- Department of Molecular Bioscience, Radiation Effects Research Foundation, 5-2 Hijiyama-Park, Minami-Ku, Hiroshima 732-0815, Japan
- Corresponding Author. Tel: 082-261-3131; Fax: +082-263-7279;
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89
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Diminished apoptotic priming and ATM signalling confer a survival advantage onto aged haematopoietic stem cells in response to DNA damage. Nat Cell Biol 2018. [PMID: 29531308 PMCID: PMC6067675 DOI: 10.1038/s41556-018-0054-y] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Ageing of haematopoietic stem cells (HSC) contributes to deficits in the aged haematopoietic system. HSC decline is driven in part by DNA damage accumulation, yet how aging impacts the acute DNA damage response (DDR) of HSCs is poorly understood. We show that old HSCs exhibit diminished ATM activity and attenuated DDR leading to elevated clonal survival in response to a range of genotoxins that was underwritten by diminished apoptotic priming. Distinct HSC subsets exhibited ageing-dependent and subtype-dependent differences in apoptotic priming and survival in response to DNA damage. The defective DDR of old HSCs was non-cell autonomous as ATM signalling, and clonal survival in response to DNA damage could be restored to levels observed in young HSCs post-transplantation into young recipients. These data suggest that defective DDR and diminished apoptotic priming provide a selective advantage to old HSCs that may contribute to mutation accrual and disease predisposition.
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90
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Zhai Y, Wei R, Liu J, Wang H, Cai W, Zhao M, Hu Y, Wang S, Yang T, Liu X, Yang J, Liu S. Drug-induced premature senescence model in human dental follicle stem cells. Oncotarget 2018; 8:7276-7293. [PMID: 28030852 PMCID: PMC5352320 DOI: 10.18632/oncotarget.14085] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2016] [Accepted: 12/12/2016] [Indexed: 12/24/2022] Open
Abstract
Aging is identified by a progressive decline of physiological integrity leading to age-related degenerative diseases, but its causes is unclear. Human dental pulp stem cells (hDPSCs) has a remarkable rejuvenated capacity that relies on its resident stem cells. However, because of the lack of proper senescence models, exploration of the underlying molecular mechanisms has been hindered. Here, we established a cellular model utilizing a hydroxyurea (HU) treatment protocol and effectively induced Human dental pulp stem cells to undergo cellular senescence. Age-related phenotypic changes were identified by augmented senescence-associated-β-galactosidase (SA-β-gal) staining, declined proliferation and differentiation capacity, elevated G0/G1 cell cycle arrest, increased apoptosis and reactive oxygen species levels. Furthermore, we tested the expression of key genes in various DNA repair pathways including nonhomologous end-joining (NHEJ) and homologous recombination (HR) pathways. In addition, our results showed that Dental pulp stem cells from young donors are more resistant to apoptosis and exhibit increased non-homologous end joining activity compared to old donors. Further transcriptome analysis demonstrate that multiple pathways are involved in the HU-induced Dental pulp stem cells ageing, including genes associated with DNA damage and repair, mitochondrial dysfunction and increased reactive oxygen species levels. Taken together, the cellular model have important implications for understanding the molecular exploration of Dental pulp stem cells senescence and aging.
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Affiliation(s)
- Yuanfen Zhai
- Department of Ophthalmology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, P. R. China
| | - Rongbin Wei
- Department of Ophthalmology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, P. R. China
| | - Junjun Liu
- Department of Ophthalmology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, P. R. China
| | - Huihui Wang
- Department of Pediatric Dentistry, School of Stomatology, Tongji University, Shanghai Engineering Research Center, Shanghai, P. R. China
| | - Wenping Cai
- Department of Ophthalmology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, P. R. China
| | - Mengmeng Zhao
- Department of Ophthalmology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, P. R. China
| | - Yongguang Hu
- Department of Ophthalmology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, P. R. China
| | - Shuwei Wang
- Department of Stomatology, Huashan Hospital, Fudan University, Shanghai, P. R. China
| | - Tianshu Yang
- Department of Ophthalmology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, P. R. China
| | - Xiaodong Liu
- Department of Neurosurgery, Huashan Hospital, Fudan University, Shanghai, P. R. China
| | - Jianhua Yang
- Department of Ophthalmology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, P. R. China
| | - Shangfeng Liu
- Department of Ophthalmology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, P. R. China.,Department of Stomatology, Huashan Hospital, Fudan University, Shanghai, P. R. China
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91
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Flach J, Milyavsky M. Replication stress in hematopoietic stem cells in mouse and man. Mutat Res 2018; 808:74-82. [PMID: 29079268 DOI: 10.1016/j.mrfmmm.2017.10.001] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2017] [Revised: 08/31/2017] [Accepted: 10/12/2017] [Indexed: 04/14/2023]
Abstract
Life-long blood regeneration relies on a rare population of self-renewing hematopoietic stem cells (HSCs). These cells' nearly unlimited self-renewal potential and lifetime persistence in the body signifies the need for tight control of their genome integrity. Their quiescent state, tightly linked with low metabolic activity, is one of the main strategies employed by HSCs to preserve an intact genome. On the other hand, HSCs need to be able to quickly respond to increased blood demands and rapidly increase their cellular output in order to fight infection-associated inflammation or extensive blood loss. This increase in proliferation rate, however, comes at the price of exposing HSCs to DNA damage inevitably associated with the process of DNA replication. Any interference with normal replication fork progression leads to a specialized molecular response termed replication stress (RS). Importantly, increased levels of RS are a hallmark feature of aged HSCs, where an accumulating body of evidence points to causative relationships between RS and the aging-associated impairment of the blood system's functional capacity. In this review, we present an overview of RS in HSCs focusing on its causes and consequences for the blood system of mice and men.
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Affiliation(s)
- Johanna Flach
- Department of Hematology and Medical Oncology & Institute of Molecular Oncology, University Medical Center Goettingen, Germany; Department of Hematology and Oncology, Medical Faculty Mannheim of the Heidelberg University, Mannheim, Germany.
| | - Michael Milyavsky
- Department of Pathology, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv 69978, Israel.
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92
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Feng Z, Hanson RW, Berger NA, Trubitsyn A. Reprogramming of energy metabolism as a driver of aging. Oncotarget 2017; 7:15410-20. [PMID: 26919253 PMCID: PMC4941250 DOI: 10.18632/oncotarget.7645] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2016] [Accepted: 02/11/2016] [Indexed: 12/15/2022] Open
Abstract
Aging is characterized by progressive loss of cellular function and integrity. It has been thought to be driven by stochastic molecular damage. However, genetic and environmental maneuvers enhancing mitochondrial function or inhibiting glycolysis extend lifespan and promote healthy aging in many species. In post-fertile Caenorhabditis elegans, a progressive decline in phosphoenolpyruvate carboxykinase with age, and a reciprocal increase in pyruvate kinase shunt energy metabolism from oxidative metabolism to anaerobic glycolysis. This reduces the efficiency and total of energy generation. As a result, energy-dependent physical activity and other cellular functions decrease due to unmatched energy demand and supply. In return, decrease in physical activity accelerates this metabolic shift, forming a vicious cycle. This metabolic event is a determinant of aging, and is retarded by caloric restriction to counteract aging. In this review, we summarize these and other evidence supporting the idea that metabolic reprogramming is a driver of aging. We also suggest strategies to test this hypothesis
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Affiliation(s)
- Zhaoyang Feng
- Department of Pharmacology, School of Medicine, Case Western Reserve University, Cleveland, OH, USA
| | - Richard W Hanson
- Department of Biochemistry, School of Medicine, Case Western Reserve University, Cleveland, OH, USA.,Case Comprehensive Cancer Center, School of Medicine, Case Western Reserve University, Cleveland, OH, USA
| | - Nathan A Berger
- Department of Biochemistry, School of Medicine, Case Western Reserve University, Cleveland, OH, USA.,Case Comprehensive Cancer Center, School of Medicine, Case Western Reserve University, Cleveland, OH, USA.,Department of Medicine, School of Medicine, Case Western Reserve University, Cleveland, OH, USA
| | - Alexander Trubitsyn
- Institute of Biology and Soil Sciences of Far Eastern Brach of Russian Academy of Science, Vladivostok, Russia
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93
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Choi SW, Lee JY, Kang KS. miRNAs in stem cell aging and age-related disease. Mech Ageing Dev 2017; 168:20-29. [DOI: 10.1016/j.mad.2017.08.013] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2016] [Revised: 07/21/2017] [Accepted: 08/21/2017] [Indexed: 02/07/2023]
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94
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Cooper JN, Young NS. Clonality in context: hematopoietic clones in their marrow environment. Blood 2017; 130:2363-2372. [PMID: 29046282 PMCID: PMC5709788 DOI: 10.1182/blood-2017-07-794362] [Citation(s) in RCA: 65] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2017] [Accepted: 10/04/2017] [Indexed: 11/20/2022] Open
Abstract
Clonal hematopoiesis occurs normally, especially with aging, and in the setting of disease, not only in myeloid cancers but in bone marrow failure as well. In cancer, malignant clones are characterized by recurrent somatic mutations in specific sets of genes, but the direct relationship of such mutations to leukemogenesis, when they occur in cells of an apparently healthy older individual or after recovery from immune aplastic anemia, is uncertain. Here we emphasize a view of clonal evolution that stresses natural selection over deterministic ontogeny, and we stress the selective role of the environment of the marrow and organism. Clonal hematopoieses after chemotherapy, in marrow failure, and with aging serve as models. We caution against the overinterpretation of clinical results of genomic testing in the absence of a better understanding of clonal selection and evolution.
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Affiliation(s)
- James N Cooper
- Hematology Branch, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD
| | - Neal S Young
- Hematology Branch, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD
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95
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Djeghloul D, Kuranda K, Kuzniak I, Barbieri D, Naguibneva I, Choisy C, Bories JC, Dosquet C, Pla M, Vanneaux V, Socié G, Porteu F, Garrick D, Goodhardt M. Age-Associated Decrease of the Histone Methyltransferase SUV39H1 in HSC Perturbs Heterochromatin and B Lymphoid Differentiation. Stem Cell Reports 2017; 6:970-984. [PMID: 27304919 PMCID: PMC4911502 DOI: 10.1016/j.stemcr.2016.05.007] [Citation(s) in RCA: 59] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2015] [Revised: 05/13/2016] [Accepted: 05/16/2016] [Indexed: 01/11/2023] Open
Abstract
The capacity of hematopoietic stem cells (HSC) to generate B lymphocytes declines with age, contributing to impaired immune function in the elderly. Here we show that the histone methyltransferase SUV39H1 plays an important role in human B lymphoid differentiation and that expression of SUV39H1 decreases with age in both human and mouse HSC, leading to a global reduction in H3K9 trimethylation and perturbed heterochromatin function. Further, we demonstrate that SUV39H1 is a target of microRNA miR-125b, a known regulator of HSC function, and that expression of miR-125b increases with age in human HSC. Overexpression of miR-125b and inhibition of SUV39H1 in young HSC induced loss of B cell potential. Conversely, both inhibition of miR-125 and enforced expression of SUV39H1 improved the capacity of HSC from elderly individuals to generate B cells. Our findings highlight the importance of heterochromatin regulation in HSC aging and B lymphopoiesis.
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Affiliation(s)
- Dounia Djeghloul
- INSERM UMRS-1126, Institut Universitaire d'Hématologie, Université Paris Diderot, Paris, France
| | - Klaudia Kuranda
- INSERM UMRS-1126, Institut Universitaire d'Hématologie, Université Paris Diderot, Paris, France
| | - Isabelle Kuzniak
- INSERM UMRS-1126, Institut Universitaire d'Hématologie, Université Paris Diderot, Paris, France
| | - Daniela Barbieri
- INSERM UMRS-1170, Gustave Roussy Cancer Campus, Université Paris Sud - Université Paris-Saclay, Villejuif, France
| | - Irina Naguibneva
- INSERM UMRS-967, Institut de Radiobiologie Cellulaire et Moléculaire, Commissariat à l'Energie Atomique, Fontenay-aux-Roses, France
| | - Caroline Choisy
- INSERM UMRS-1126, Institut Universitaire d'Hématologie, Université Paris Diderot, Paris, France
| | - Jean-Christophe Bories
- INSERM UMRS-1126, Institut Universitaire d'Hématologie, Université Paris Diderot, Paris, France
| | - Christine Dosquet
- INSERM UMRS-1131, Institut Universitaire d'Hématologie, Université Paris Diderot, Paris, France
| | - Marika Pla
- INSERM UMRS-1131, Institut Universitaire d'Hématologie, Université Paris Diderot, Paris, France
| | - Valérie Vanneaux
- AP-HP Unité de Thérapie Cellulaire, Centre d'Investigation Clinique en Biothérapie Cellulaire and INSERM UMRS-1160, Université Paris Diderot, Paris, France
| | - Gérard Socié
- AP-HP Hematology Transplantation and INSERM UMRS-1160, Université Paris Diderot, Paris, France
| | - Françoise Porteu
- INSERM UMRS-1170, Gustave Roussy Cancer Campus, Université Paris Sud - Université Paris-Saclay, Villejuif, France
| | - David Garrick
- INSERM UMRS-1126, Institut Universitaire d'Hématologie, Université Paris Diderot, Paris, France
| | - Michele Goodhardt
- INSERM UMRS-1126, Institut Universitaire d'Hématologie, Université Paris Diderot, Paris, France.
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96
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DNA damage responses and p53 in the aging process. Blood 2017; 131:488-495. [PMID: 29141944 DOI: 10.1182/blood-2017-07-746396] [Citation(s) in RCA: 190] [Impact Index Per Article: 27.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2017] [Accepted: 09/01/2017] [Indexed: 12/18/2022] Open
Abstract
The genome is constantly attacked by genotoxic insults. DNA damage has long been established as a cause of cancer development through its mutagenic consequences. Conversely, radiation therapy and chemotherapy induce DNA damage to drive cells into apoptosis or senescence as outcomes of the DNA damage response (DDR). More recently, DNA damage has been recognized as a causal factor for the aging process. The role of DNA damage in aging and age-related diseases is illustrated by numerous congenital progeroid syndromes that are caused by mutations in genome maintenance pathways. During the past 2 decades, understanding how DDR drives cancer development and contributes to the aging process has progressed rapidly. It turns out that the DDR factor p53 takes center stage during tumor development and also plays an important role in the aging process. Studies in metazoan models ranging from Caenorhabditis elegans to mammals have revealed cell-autonomous and systemic DDR mechanisms that orchestrate adaptive responses that augment maintenance of the aging organism amid gradually accumulating DNA damage.
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97
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DNA damage, metabolism and aging in pro-inflammatory T cells: Rheumatoid arthritis as a model system. Exp Gerontol 2017; 105:118-127. [PMID: 29101015 DOI: 10.1016/j.exger.2017.10.027] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2017] [Revised: 10/26/2017] [Accepted: 10/30/2017] [Indexed: 01/09/2023]
Abstract
The aging process is the major driver of morbidity and mortality, steeply increasing the risk to succumb to cancer, cardiovascular disease, infection and neurodegeneration. Inflammation is a common denominator in age-related pathologies, identifying the immune system as a gatekeeper in aging overall. Among immune cells, T cells are long-lived and exposed to intense replication pressure, making them sensitive to aging-related abnormalities. In successful T cell aging, numbers of naïve cells, repertoire diversity and activation thresholds are preserved as long as possible; in maladaptive T cell aging, protective T cell functions decline and pro-inflammatory effector cells are enriched. Here, we review in the model system of rheumatoid arthritis (RA) how maladaptive T cell aging renders the host susceptible to chronic, tissue-damaging inflammation. In T cells from RA patients, known to be about 20years pre-aged, three interconnected functional domains are altered: DNA damage repair, metabolic activity generating energy and biosynthetic precursor molecules, and shaping of plasma membranes to promote T cell motility. In each of these domains, key molecules and pathways have now been identified, including the glycolytic enzymes PFKFB3 and G6PD; the DNA repair molecules ATM, DNA-PKcs and MRE11A; and the podosome marker protein TKS5. Some of these molecules may help in defining targetable pathways to slow the T cell aging process.
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98
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Predictors of Asymptomatic Radiation-induced Abdominal Atherosclerosis. Clin Oncol (R Coll Radiol) 2017; 29:e186-e194. [DOI: 10.1016/j.clon.2017.07.013] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2017] [Revised: 07/12/2017] [Accepted: 07/13/2017] [Indexed: 11/17/2022]
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99
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Wahlestedt M, Bryder D. The slippery slope of hematopoietic stem cell aging. Exp Hematol 2017; 56:1-6. [PMID: 28943295 DOI: 10.1016/j.exphem.2017.09.008] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2017] [Revised: 09/12/2017] [Accepted: 09/15/2017] [Indexed: 10/18/2022]
Abstract
The late stages of life, in most species including humans, are associated with a decline in the overall maintenance and health of the organism. This applies also to the hematopoietic system, where aging is not only associated with an increased predisposition for hematological malignancies, but also identified as a strong comorbidity factor for other diseases. Research during the last two decades has proposed that alterations at the level of hematopoietic stem cells (HSCs) might be a root cause for the hematological changes observed with age. However, the recent realization that not all HSCs are alike with regard to fundamental stem cell properties such as self-renewal and lineage potential has several implications for HSC aging, including the synchrony and the stability of the aging HSC state. To approach HSC aging from a clonal perspective, we recently took advantage of technical developments in cellular barcoding and combined this with the derivation of induced pluripotent stem cells (iPSCs). This allowed us to selectively approach HSCs functionally affected by age. The finding that such iPSCs were capable of fully regenerating multilineage hematopoiesis upon morula/blastocyst complementation provides compelling evidence that many aspects of HSC aging can be reversed, which indicates that a central mechanism underlying HSC aging is a failure to uphold the epigenomes associated with younger age. Here we discuss these findings in the context of the underlying causes that might influence HSC aging and the requirements and prospects for restoration of the aging HSC epigenome.
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Affiliation(s)
- Martin Wahlestedt
- Medical Faculty, Institution for Laboratory Medicine, Division of Molecular Hematology, Lund University, Lund, Sweden
| | - David Bryder
- Medical Faculty, Institution for Laboratory Medicine, Division of Molecular Hematology, Lund University, Lund, Sweden; StemTherapy, Lund University, Lund, Sweden.
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100
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Naka K, Hirao A. Regulation of Hematopoiesis and Hematological Disease by TGF-β Family Signaling Molecules. Cold Spring Harb Perspect Biol 2017; 9:cshperspect.a027987. [PMID: 28193723 DOI: 10.1101/cshperspect.a027987] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Throughout the lifetime of an individual, hematopoietic stem cells (HSCs) maintain the homeostasis of normal hematopoiesis through the precise generation of mature blood cells. Numerous genetic studies in mice have shown that stem-cell quiescence is critical for sustaining primitive long-term HSCs in vivo. In this review, we first examine the crucial roles of transforming growth factor β (TGF-β) and related signaling molecules in not only regulating the well-known cytostatic effects of these molecules but also governing the self-renewal capacity of HSCs in their in vivo microenvironmental niche. Second, we discuss the current evidence indicating that TGF-β signaling has a dual function in disorders of the hematopoietic system. In particular, we examine the paradox that, although intrinsic TGF-β signaling is essential for regulating the survival and resistance to therapy of chronic myelogenous leukemia (CML) stem cells, genetic changes that abrogate TGF-β signaling can lead to the development of several hematological malignancies.
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Affiliation(s)
- Kazuhito Naka
- Department of Stem Cell Biology, Research Institute for Radiation Biology and Medicine, Hiroshima University, Minami-ku, Hiroshima 734-8553, Japan
| | - Atsushi Hirao
- Division of Molecular Genetics, Cancer Research Institute, Kanazawa University, Kanazawa, Ishikawa 920-1192, Japan
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