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Meng Y, Nerlov C. Epigenetic regulation of hematopoietic stem cell fate. Trends Cell Biol 2024:S0962-8924(24)00162-4. [PMID: 39271425 DOI: 10.1016/j.tcb.2024.08.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2024] [Revised: 08/12/2024] [Accepted: 08/14/2024] [Indexed: 09/15/2024]
Abstract
Hematopoietic stem cells (HSCs) sustain blood cell production throughout the mammalian life span. However, it has become clear that at the single cell level a subset of HSCs is stably biased in their lineage output, and that such heterogeneity may play a key role in physiological processes including aging and adaptive immunity. Analysis of chromatin accessibility, DNA methylation, and histone modifications has revealed that HSCs with different lineage bias exhibit distinct epigenetic traits inscribed at poised, lineage-specific enhancers. This allows for lineage priming without initiating lineage-specific gene expression in HSCs, controlling lineage bias while preserving self-renewal and multipotency. Here, we review our current understanding of epigenetic regulation in the establishment and maintenance of HSC fate decisions under different physiological conditions.
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Affiliation(s)
- Yiran Meng
- MRC Molecular Haematology Unit, MRC Weatherall Institute of Molecular Medicine, University of Oxford, John Radcliffe Hospital, Headington, Oxford, UK
| | - Claus Nerlov
- MRC Molecular Haematology Unit, MRC Weatherall Institute of Molecular Medicine, University of Oxford, John Radcliffe Hospital, Headington, Oxford, UK.
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2
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Patrick R, Naval-Sanchez M, Deshpande N, Huang Y, Zhang J, Chen X, Yang Y, Tiwari K, Esmaeili M, Tran M, Mohamed AR, Wang B, Xia D, Ma J, Bayliss J, Wong K, Hun ML, Sun X, Cao B, Cottle DL, Catterall T, Barzilai-Tutsch H, Troskie RL, Chen Z, Wise AF, Saini S, Soe YM, Kumari S, Sweet MJ, Thomas HE, Smyth IM, Fletcher AL, Knoblich K, Watt MJ, Alhomrani M, Alsanie W, Quinn KM, Merson TD, Chidgey AP, Ricardo SD, Yu D, Jardé T, Cheetham SW, Marcelle C, Nilsson SK, Nguyen Q, White MD, Nefzger CM. The activity of early-life gene regulatory elements is hijacked in aging through pervasive AP-1-linked chromatin opening. Cell Metab 2024; 36:1858-1881.e23. [PMID: 38959897 DOI: 10.1016/j.cmet.2024.06.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Revised: 03/28/2024] [Accepted: 06/06/2024] [Indexed: 07/05/2024]
Abstract
A mechanistic connection between aging and development is largely unexplored. Through profiling age-related chromatin and transcriptional changes across 22 murine cell types, analyzed alongside previous mouse and human organismal maturation datasets, we uncovered a transcription factor binding site (TFBS) signature common to both processes. Early-life candidate cis-regulatory elements (cCREs), progressively losing accessibility during maturation and aging, are enriched for cell-type identity TFBSs. Conversely, cCREs gaining accessibility throughout life have a lower abundance of cell identity TFBSs but elevated activator protein 1 (AP-1) levels. We implicate TF redistribution toward these AP-1 TFBS-rich cCREs, in synergy with mild downregulation of cell identity TFs, as driving early-life cCRE accessibility loss and altering developmental and metabolic gene expression. Such remodeling can be triggered by elevating AP-1 or depleting repressive H3K27me3. We propose that AP-1-linked chromatin opening drives organismal maturation by disrupting cell identity TFBS-rich cCREs, thereby reprogramming transcriptome and cell function, a mechanism hijacked in aging through ongoing chromatin opening.
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Affiliation(s)
- Ralph Patrick
- Institute for Molecular Bioscience, The University of Queensland, St. Lucia, Brisbane, QLD 4072, Australia
| | - Marina Naval-Sanchez
- Institute for Molecular Bioscience, The University of Queensland, St. Lucia, Brisbane, QLD 4072, Australia
| | - Nikita Deshpande
- Institute for Molecular Bioscience, The University of Queensland, St. Lucia, Brisbane, QLD 4072, Australia; WHO Collaborating Centre for Reference and Research on Influenza, The Peter Doherty Institute for Infection and Immunity, Melbourne, VIC 3000, Australia
| | - Yifei Huang
- Institute for Molecular Bioscience, The University of Queensland, St. Lucia, Brisbane, QLD 4072, Australia
| | - Jingyu Zhang
- Institute for Molecular Bioscience, The University of Queensland, St. Lucia, Brisbane, QLD 4072, Australia
| | - Xiaoli Chen
- Institute for Molecular Bioscience, The University of Queensland, St. Lucia, Brisbane, QLD 4072, Australia
| | - Ying Yang
- Institute for Molecular Bioscience, The University of Queensland, St. Lucia, Brisbane, QLD 4072, Australia
| | - Kanupriya Tiwari
- Institute for Molecular Bioscience, The University of Queensland, St. Lucia, Brisbane, QLD 4072, Australia
| | - Mohammadhossein Esmaeili
- Institute for Molecular Bioscience, The University of Queensland, St. Lucia, Brisbane, QLD 4072, Australia
| | - Minh Tran
- Institute for Molecular Bioscience, The University of Queensland, St. Lucia, Brisbane, QLD 4072, Australia
| | - Amin R Mohamed
- Institute for Molecular Bioscience, The University of Queensland, St. Lucia, Brisbane, QLD 4072, Australia
| | - Binxu Wang
- Institute for Molecular Bioscience, The University of Queensland, St. Lucia, Brisbane, QLD 4072, Australia
| | - Di Xia
- Genome Innovation Hub, The University of Queensland, St. Lucia, Brisbane, QLD 4072, Australia
| | - Jun Ma
- Genome Innovation Hub, The University of Queensland, St. Lucia, Brisbane, QLD 4072, Australia
| | - Jacqueline Bayliss
- Department of Anatomy and Physiology, Faculty of Medicine Dentistry and Health Sciences, The University of Melbourne, Parkville, VIC 3010, Australia
| | - Kahlia Wong
- Department of Anatomy and Developmental Biology, Monash Biomedicine Discovery Institute, Monash University, Clayton, VIC 3800, Australia
| | - Michael L Hun
- Department of Anatomy and Developmental Biology, Monash Biomedicine Discovery Institute, Monash University, Clayton, VIC 3800, Australia
| | - Xuan Sun
- Biomedical Manufacturing, Commonwealth Scientific and Industrial Research Organization, Melbourne, VIC, Australia; Australian Regenerative Medicine Institute, Monash University, Clayton, VIC 3800, Australia
| | - Benjamin Cao
- Biomedical Manufacturing, Commonwealth Scientific and Industrial Research Organization, Melbourne, VIC, Australia; Australian Regenerative Medicine Institute, Monash University, Clayton, VIC 3800, Australia
| | - Denny L Cottle
- Department of Anatomy and Developmental Biology, Monash Biomedicine Discovery Institute, Monash University, Clayton, VIC 3800, Australia
| | - Tara Catterall
- St. Vincent's Institute of Medical Research, Fitzroy, VIC 3065, Australia
| | - Hila Barzilai-Tutsch
- Australian Regenerative Medicine Institute, Monash University, Clayton, VIC 3800, Australia; Institut NeuroMyoGène, University Claude Bernard Lyon 1, 69008 Lyon, France
| | - Robin-Lee Troskie
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, St. Lucia, Brisbane, QLD 4072, Australia
| | - Zhian Chen
- Frazer Institute, Faculty of Medicine, The University of Queensland, Brisbane, QLD 4102, Australia
| | - Andrea F Wise
- Department of Pharmacology, Monash Biomedicine Discovery Institute, Monash University, Clayton, VIC 3800, Australia
| | - Sheetal Saini
- Department of Pharmacology, Monash Biomedicine Discovery Institute, Monash University, Clayton, VIC 3800, Australia
| | - Ye Mon Soe
- Frazer Institute, Faculty of Medicine, The University of Queensland, Brisbane, QLD 4102, Australia
| | - Snehlata Kumari
- Frazer Institute, Faculty of Medicine, The University of Queensland, Brisbane, QLD 4102, Australia
| | - Matthew J Sweet
- Institute for Molecular Bioscience, The University of Queensland, St. Lucia, Brisbane, QLD 4072, Australia; Australian Infectious Diseases Research Centre, The University of Queensland, Brisbane, QLD, Australia
| | - Helen E Thomas
- St. Vincent's Institute of Medical Research, Fitzroy, VIC 3065, Australia
| | - Ian M Smyth
- Department of Anatomy and Developmental Biology, Monash Biomedicine Discovery Institute, Monash University, Clayton, VIC 3800, Australia
| | - Anne L Fletcher
- Department of Biochemistry and Molecular Biology, Monash Biomedicine Discovery Institute, Monash University, Clayton, VIC 3800, Australia
| | - Konstantin Knoblich
- Department of Biochemistry and Molecular Biology, Monash Biomedicine Discovery Institute, Monash University, Clayton, VIC 3800, Australia
| | - Matthew J Watt
- Department of Anatomy and Physiology, Faculty of Medicine Dentistry and Health Sciences, The University of Melbourne, Parkville, VIC 3010, Australia
| | - Majid Alhomrani
- Department of Clinical Laboratories Sciences, Faculty of Applied Medical Sciences, Taif University, Taif, Saudi Arabia; Research Centre for Health Sciences, Taif University, Taif, Saudi Arabia
| | - Walaa Alsanie
- Department of Clinical Laboratories Sciences, Faculty of Applied Medical Sciences, Taif University, Taif, Saudi Arabia; Research Centre for Health Sciences, Taif University, Taif, Saudi Arabia
| | - Kylie M Quinn
- Department of Biochemistry and Molecular Biology, Monash Biomedicine Discovery Institute, Monash University, Clayton, VIC 3800, Australia; School of Health and Biomedical Sciences, RMIT University, Bundoora, VIC 3083, Australia
| | - Tobias D Merson
- Australian Regenerative Medicine Institute, Monash University, Clayton, VIC 3800, Australia; National Institute of Mental Health, National Institutes of Health, Bethesda, MD 20892, USA
| | - Ann P Chidgey
- Department of Anatomy and Developmental Biology, Monash Biomedicine Discovery Institute, Monash University, Clayton, VIC 3800, Australia
| | - Sharon D Ricardo
- Department of Pharmacology, Monash Biomedicine Discovery Institute, Monash University, Clayton, VIC 3800, Australia
| | - Di Yu
- Frazer Institute, Faculty of Medicine, The University of Queensland, Brisbane, QLD 4102, Australia; Ian Frazer Centre for Children's Immunotherapy Research, Child Health Research Centre, Faculty of Medicine, The University of Queensland, Brisbane, QLD 4102, Australia
| | - Thierry Jardé
- Department of Anatomy and Developmental Biology, Monash Biomedicine Discovery Institute, Monash University, Clayton, VIC 3800, Australia; Development and Stem Cells Program, Monash Biomedicine Discovery Institute, Monash University, Clayton, VIC 3800, Australia; Cancer Program, Monash Biomedicine Discovery Institute, Monash University, Clayton, VIC 3800, Australia; Department of Surgery, Cabrini Monash University, Malvern, VIC 3144, Australia
| | - Seth W Cheetham
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, St. Lucia, Brisbane, QLD 4072, Australia
| | - Christophe Marcelle
- Australian Regenerative Medicine Institute, Monash University, Clayton, VIC 3800, Australia; Institut NeuroMyoGène, University Claude Bernard Lyon 1, 69008 Lyon, France
| | - Susan K Nilsson
- Biomedical Manufacturing, Commonwealth Scientific and Industrial Research Organization, Melbourne, VIC, Australia; Australian Regenerative Medicine Institute, Monash University, Clayton, VIC 3800, Australia
| | - Quan Nguyen
- Institute for Molecular Bioscience, The University of Queensland, St. Lucia, Brisbane, QLD 4072, Australia; School of Biomedical Sciences, The University of Queensland, St. Lucia, Brisbane, QLD 4072, Australia
| | - Melanie D White
- Institute for Molecular Bioscience, The University of Queensland, St. Lucia, Brisbane, QLD 4072, Australia; School of Biomedical Sciences, The University of Queensland, St. Lucia, Brisbane, QLD 4072, Australia
| | - Christian M Nefzger
- Institute for Molecular Bioscience, The University of Queensland, St. Lucia, Brisbane, QLD 4072, Australia; Department of Anatomy and Developmental Biology, Monash Biomedicine Discovery Institute, Monash University, Clayton, VIC 3800, Australia; Development and Stem Cells Program, Monash Biomedicine Discovery Institute, Monash University, Clayton, VIC 3800, Australia; School of Chemistry and Molecular Biosciences, The University of Queensland, St. Lucia, Brisbane, QLD 4072, Australia.
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Chiavellini P, Lehmann M, Gallardo MD, Mallat MC, Pasquini DC, Zoller JA, Gordevicius J, Girard M, Lacunza E, Herenu CB, Horvath S, Goya RG. Young Plasma Rejuvenates Blood DNA Methylation Profile, Extends Mean Lifespan, and Improves Physical Appearance in Old Rats. J Gerontol A Biol Sci Med Sci 2024; 79:glae071. [PMID: 38430547 PMCID: PMC11020299 DOI: 10.1093/gerona/glae071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Indexed: 03/04/2024] Open
Abstract
There is converging evidence that young blood conveys cells, vesicles, and molecules able to revitalize function and restore organ integrity in old individuals. We assessed the effects of young plasma on the lifespan, epigenetic age, and healthspan of old female rats. Beginning at 25.6 months of age, a group of 9 rats (group T) was intraperitoneally injected with plasma from young rats until their natural death. A group of 8 control rats of the same age received no treatment (group C). Blood samples were collected every other week. Survival curves showed that from age 26 to 30 months, none of the group T animals died, whereas the survival curve of group C rats began to decline at age 26 months. Blood DNAm age versus chronological age showed that DNAm age in young animals increased faster than chronological age, then slowed down, entering a plateau after 27 months. The DNAm age of the treated rats fell below the DNAm age of controls and, in numerical terms, remained consistently lower until natural death. When rats were grouped according to the similarities in their differential blood DNA methylation profile, samples from the treated and control rats clustered in separate groups. Analysis of promoter differential methylation in genes involved in systemic regulatory activities revealed specific GO term enrichment related to the insulin-like factors pathways as well as to cytokines and chemokines associated with immune and homeostatic functions. We conclude that young plasma therapy may constitute a natural, noninvasive intervention for epigenetic rejuvenation and health enhancement.
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Affiliation(s)
- Priscila Chiavellini
- Institute for Biochemical Research (INIBIOLP)—Histology B and Pathology B, Faculty of Medicine, School of Medicine, National University of La Plata (UNLP), La Plata, Argentina
| | - Marianne Lehmann
- Institute for Biochemical Research (INIBIOLP)—Histology B and Pathology B, Faculty of Medicine, School of Medicine, National University of La Plata (UNLP), La Plata, Argentina
| | - Maria D Gallardo
- Institute for Biochemical Research (INIBIOLP)—Histology B and Pathology B, Faculty of Medicine, School of Medicine, National University of La Plata (UNLP), La Plata, Argentina
| | - Martina Canatelli Mallat
- Institute for Biochemical Research (INIBIOLP)—Histology B and Pathology B, Faculty of Medicine, School of Medicine, National University of La Plata (UNLP), La Plata, Argentina
| | - Diana C Pasquini
- Institute for Biochemical Research (INIBIOLP)—Histology B and Pathology B, Faculty of Medicine, School of Medicine, National University of La Plata (UNLP), La Plata, Argentina
| | - Joseph A Zoller
- Department of Biostatistics, Fielding School of Public Health, University of California, Los Angeles, Los Angeles, California, USA
| | | | - Mauricio Girard
- Institute for Biochemical Research (INIBIOLP)—Histology B and Pathology B, Faculty of Medicine, School of Medicine, National University of La Plata (UNLP), La Plata, Argentina
| | - Ezequiel Lacunza
- Centro de Investigaciones Inmunologicas Basicas y Aplicadas (CINIBA), School of Medicine, National University of La Plata (UNLP), La Plata, Argentina
| | - Claudia B Herenu
- Institute for Experimental Pharmacology (IFEC), School of Chemical Sciences, National University of Cordoba, Cordoba, Argentina
| | - Steve Horvath
- Department of Biostatistics, Fielding School of Public Health, University of California, Los Angeles, Los Angeles, California, USA
- Altos Labs, San Diego, California, USA
| | - Rodolfo G Goya
- Institute for Biochemical Research (INIBIOLP)—Histology B and Pathology B, Faculty of Medicine, School of Medicine, National University of La Plata (UNLP), La Plata, Argentina
- Vitality in Aging Research Group (VIA), Fort Lauderdale, Florida, USA
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4
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Scherer M, Singh I, Braun M, Szu-Tu C, Kardorff M, Rühle J, Frömel R, Beneyto-Calabuig S, Raffel S, Rodriguez-Fraticelli A, Velten L. Somatic epimutations enable single-cell lineage tracing in native hematopoiesis across the murine and human lifespan. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.04.01.587514. [PMID: 38617287 PMCID: PMC11014487 DOI: 10.1101/2024.04.01.587514] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/16/2024]
Abstract
Current approaches to lineage tracing of stem cell clones require genetic engineering or rely on sparse somatic DNA variants, which are difficult to capture at single-cell resolution. Here, we show that targeted single-cell measurements of DNA methylation at single-CpG resolution deliver joint information about cellular differentiation state and clonal identities. We develop EPI-clone, a droplet-based method for transgene-free lineage tracing, and apply it to study hematopoiesis, capturing hundreds of clonal trajectories across almost 100,000 single-cells. Using ground-truth genetic barcodes, we demonstrate that EPI-clone accurately identifies clonal lineages throughout hematopoietic differentiation. Applied to unperturbed hematopoiesis, we describe an overall decline of clonal complexity during murine ageing and the expansion of rare low-output stem cell clones. In aged human donors, we identified expanded hematopoietic clones with and without genetic lesions, and various degrees of clonal complexity. Taken together, EPI-clone enables accurate and transgene-free single-cell lineage tracing at scale.
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Affiliation(s)
- Michael Scherer
- Computational Biology and Health Genomics, Centre for Genomic Regulation (CRG), Barcelona Institute of Science and Technology (BIST), 08003 Barcelona, Spain
| | - Indranil Singh
- Institute for Research in Biomedicine (IRB Barcelona), The Barcelona Institute of Science and Technology (BIST), Barcelona, Spain
| | - Martina Braun
- Computational Biology and Health Genomics, Centre for Genomic Regulation (CRG), Barcelona Institute of Science and Technology (BIST), 08003 Barcelona, Spain
| | - Chelsea Szu-Tu
- Computational Biology and Health Genomics, Centre for Genomic Regulation (CRG), Barcelona Institute of Science and Technology (BIST), 08003 Barcelona, Spain
| | - Michael Kardorff
- Department of Medicine, Hematology, Oncology and Rheumatology, University Hospital Heidelberg, 69120 Heidelberg, Germany
| | - Julia Rühle
- Computational Biology and Health Genomics, Centre for Genomic Regulation (CRG), Barcelona Institute of Science and Technology (BIST), 08003 Barcelona, Spain
- Universitat Pompeu Fabra (UPF), Barcelona, Spain
| | - Robert Frömel
- Computational Biology and Health Genomics, Centre for Genomic Regulation (CRG), Barcelona Institute of Science and Technology (BIST), 08003 Barcelona, Spain
- Universitat Pompeu Fabra (UPF), Barcelona, Spain
| | - Sergi Beneyto-Calabuig
- Computational Biology and Health Genomics, Centre for Genomic Regulation (CRG), Barcelona Institute of Science and Technology (BIST), 08003 Barcelona, Spain
- Universitat Pompeu Fabra (UPF), Barcelona, Spain
| | - Simon Raffel
- Department of Medicine, Hematology, Oncology and Rheumatology, University Hospital Heidelberg, 69120 Heidelberg, Germany
| | - Alejo Rodriguez-Fraticelli
- Institute for Research in Biomedicine (IRB Barcelona), The Barcelona Institute of Science and Technology (BIST), Barcelona, Spain
- Institució Catalana de Recerca i Estudis Avançats (ICREA), Barcelona, Spain
| | - Lars Velten
- Computational Biology and Health Genomics, Centre for Genomic Regulation (CRG), Barcelona Institute of Science and Technology (BIST), 08003 Barcelona, Spain
- Universitat Pompeu Fabra (UPF), Barcelona, Spain
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Yan B, Yuan Q, Guryanova OA. Epigenetic Mechanisms in Hematologic Aging and Premalignant Conditions. EPIGENOMES 2023; 7:32. [PMID: 38131904 PMCID: PMC10743085 DOI: 10.3390/epigenomes7040032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2023] [Revised: 11/29/2023] [Accepted: 12/07/2023] [Indexed: 12/23/2023] Open
Abstract
Hematopoietic stem cells (HSCs) are essential for maintaining overall health by continuously generating blood cells throughout an individual's lifespan. However, as individuals age, the hematopoietic system undergoes significant functional decline, rendering them more susceptible to age-related diseases. Growing research evidence has highlighted the critical role of epigenetic regulation in this age-associated decline. This review aims to provide an overview of the diverse epigenetic mechanisms involved in the regulation of normal HSCs during the aging process and their implications in aging-related diseases. Understanding the intricate interplay of epigenetic mechanisms that contribute to aging-related changes in the hematopoietic system holds great potential for the development of innovative strategies to delay the aging process. In fact, interventions targeting epigenetic modifications have shown promising outcomes in alleviating aging-related phenotypes and extending lifespan in various animal models. Small molecule-based therapies and reprogramming strategies enabling epigenetic rejuvenation have emerged as effective approaches for ameliorating or even reversing aging-related conditions. By acquiring a deeper understanding of these epigenetic mechanisms, it is anticipated that interventions can be devised to prevent or mitigate the rates of hematologic aging and associated diseases later in life. Ultimately, these advancements have the potential to improve overall health and enhance the quality of life in aging individuals.
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Affiliation(s)
- Bowen Yan
- Department of Pharmacology and Therapeutics, College of Medicine, University of Florida, Gainesville, FL 32610, USA;
| | | | - Olga A. Guryanova
- Department of Pharmacology and Therapeutics, College of Medicine, University of Florida, Gainesville, FL 32610, USA;
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Kasbekar M, Mitchell CA, Proven MA, Passegué E. Hematopoietic stem cells through the ages: A lifetime of adaptation to organismal demands. Cell Stem Cell 2023; 30:1403-1420. [PMID: 37865087 PMCID: PMC10842631 DOI: 10.1016/j.stem.2023.09.013] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2023] [Revised: 09/20/2023] [Accepted: 09/28/2023] [Indexed: 10/23/2023]
Abstract
Hematopoietic stem cells (HSCs), which govern the production of all blood lineages, transition through a series of functional states characterized by expansion during fetal development, functional quiescence in adulthood, and decline upon aging. We describe central features of HSC regulation during ontogeny to contextualize how adaptive responses over the life of the organism ultimately form the basis for HSC functional degradation with age. We particularly focus on the role of cell cycle regulation, inflammatory response pathways, epigenetic changes, and metabolic regulation. We then explore how the knowledge of age-related changes in HSC regulation can inform strategies for the rejuvenation of old HSCs.
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Affiliation(s)
- Monica Kasbekar
- Columbia Stem Cell Initiative, Department of Genetics and Development, Columbia University, New York, NY 10032, USA; Division of Hematology and Medical Oncology, Department of Medicine, Columbia University Irving Medical Center, New York, NY 10032, USA
| | - Carl A Mitchell
- Columbia Stem Cell Initiative, Department of Genetics and Development, Columbia University, New York, NY 10032, USA
| | - Melissa A Proven
- Columbia Stem Cell Initiative, Department of Genetics and Development, Columbia University, New York, NY 10032, USA
| | - Emmanuelle Passegué
- Columbia Stem Cell Initiative, Department of Genetics and Development, Columbia University, New York, NY 10032, USA.
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Konturek-Ciesla A, Dhapola P, Zhang Q, Säwén P, Wan H, Karlsson G, Bryder D. Temporal multimodal single-cell profiling of native hematopoiesis illuminates altered differentiation trajectories with age. Cell Rep 2023; 42:112304. [PMID: 36961818 DOI: 10.1016/j.celrep.2023.112304] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2022] [Revised: 01/16/2023] [Accepted: 03/08/2023] [Indexed: 03/25/2023] Open
Abstract
Aging negatively affects hematopoiesis, with consequences for immunity and acquired blood cell disorders. Although impairments in hematopoietic stem cell (HSC) function contribute to this, the in vivo dynamics of such changes remain obscure. Here, we integrate extensive longitudinal functional assessments of HSC-specific lineage tracing with single-cell transcriptome and epitope profiling. In contrast to recent suggestions from single-cell RNA sequencing alone, our data favor a defined structure of HSC/progenitor differentiation that deviates substantially from HSC-derived hematopoiesis following transplantation. Native age-dependent attrition in HSC differentiation manifests as drastically reduced lymphoid output through an early lymphoid-primed progenitor (MPP Ly-I). While in vitro activation fails to rescue lymphoid differentiation from most aged HSCs, robust lymphopoiesis can be achieved by culturing elevated numbers of candidate HSCs. Therefore, our data position rare chronologically aged HSC clones, fully competent at producing lymphoid offspring, as a prime target for approaches aimed to improve lymphopoiesis in the elderly.
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Affiliation(s)
- Anna Konturek-Ciesla
- Division of Molecular Hematology, Department of Laboratory Medicine, Medical Faculty, Lund University, Lund, Sweden
| | - Parashar Dhapola
- Division of Molecular Hematology, Department of Laboratory Medicine, Medical Faculty, Lund University, Lund, Sweden
| | - Qinyu Zhang
- Division of Molecular Hematology, Department of Laboratory Medicine, Medical Faculty, Lund University, Lund, Sweden
| | - Petter Säwén
- Division of Molecular Hematology, Department of Laboratory Medicine, Medical Faculty, Lund University, Lund, Sweden
| | - Haixia Wan
- Division of Molecular Hematology, Department of Laboratory Medicine, Medical Faculty, Lund University, Lund, Sweden
| | - Göran Karlsson
- Division of Molecular Hematology, Department of Laboratory Medicine, Medical Faculty, Lund University, Lund, Sweden
| | - David Bryder
- Division of Molecular Hematology, Department of Laboratory Medicine, Medical Faculty, Lund University, Lund, Sweden.
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8
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Fingelkurts AA, Fingelkurts AA. Turning Back the Clock: A Retrospective Single-Blind Study on Brain Age Change in Response to Nutraceuticals Supplementation vs. Lifestyle Modifications. Brain Sci 2023; 13:520. [PMID: 36979330 PMCID: PMC10046544 DOI: 10.3390/brainsci13030520] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Revised: 03/17/2023] [Accepted: 03/19/2023] [Indexed: 03/30/2023] Open
Abstract
BACKGROUND There is a growing consensus that chronological age (CA) is not an accurate indicator of the aging process and that biological age (BA) instead is a better measure of an individual's risk of age-related outcomes and a more accurate predictor of mortality than actual CA. In this context, BA measures the "true" age, which is an integrated result of an individual's level of damage accumulation across all levels of biological organization, along with preserved resources. The BA is plastic and depends upon epigenetics. Brain state is an important factor contributing to health- and lifespan. METHODS AND OBJECTIVE Quantitative electroencephalography (qEEG)-derived brain BA (BBA) is a suitable and promising measure of brain aging. In the present study, we aimed to show that BBA can be decelerated or even reversed in humans (N = 89) by using customized programs of nutraceutical compounds or lifestyle changes (mean duration = 13 months). RESULTS We observed that BBA was younger than CA in both groups at the end of the intervention. Furthermore, the BBA of the participants in the nutraceuticals group was 2.83 years younger at the endpoint of the intervention compared with their BBA score at the beginning of the intervention, while the BBA of the participants in the lifestyle group was only 0.02 years younger at the end of the intervention. These results were accompanied by improvements in mental-physical health comorbidities in both groups. The pre-intervention BBA score and the sex of the participants were considered confounding factors and analyzed separately. CONCLUSIONS Overall, the obtained results support the feasibility of the goal of this study and also provide the first robust evidence that halting and reversal of brain aging are possible in humans within a reasonable (practical) timeframe of approximately one year.
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9
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Lee EH, Zinshteyn D, Miglo F, Wang MQ, Reinach J, Chau CM, Grosstephan JM, Correa I, Costa K, Vargas A, Johnson A, Longo SM, Alexander JI, O'Reilly AM. Sequential events during the quiescence to proliferation transition establish patterns of follicle cell differentiation in the Drosophila ovary. Biol Open 2023; 12:bio059625. [PMID: 36524613 PMCID: PMC9867896 DOI: 10.1242/bio.059625] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Accepted: 12/07/2022] [Indexed: 12/23/2022] Open
Abstract
Stem cells cycle between periods of quiescence and proliferation to promote tissue health. In Drosophila ovaries, quiescence to proliferation transitions of follicle stem cells (FSCs) are exquisitely feeding-dependent. Here, we demonstrate feeding-dependent induction of follicle cell differentiation markers, eyes absent (Eya) and castor (Cas) in FSCs, a patterning process that does not depend on proliferation induction. Instead, FSCs extend micron-scale cytoplasmic projections that dictate Eya-Cas patterning. We identify still life and sickie as necessary and sufficient for FSC projection growth and Eya-Cas induction. Our results suggest that sequential, interdependent events establish long-term differentiation patterns in follicle cell precursors, independently of FSC proliferation induction.
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Affiliation(s)
- Eric H. Lee
- Molecular Therapeutics Program, Fox Chase Cancer Center, Philadelphia, PA 19111, USA
- Immersion Science Program, Fox Chase Cancer Center, Philadelphia, PA 19111, USA
| | - Daniel Zinshteyn
- Molecular Therapeutics Program, Fox Chase Cancer Center, Philadelphia, PA 19111, USA
| | - Fred Miglo
- Molecular Therapeutics Program, Fox Chase Cancer Center, Philadelphia, PA 19111, USA
- Immersion Science Program, Fox Chase Cancer Center, Philadelphia, PA 19111, USA
| | - Melissa Q. Wang
- Molecular Therapeutics Program, Fox Chase Cancer Center, Philadelphia, PA 19111, USA
- Immersion Science Program, Fox Chase Cancer Center, Philadelphia, PA 19111, USA
| | - Jessica Reinach
- Immersion Science Program, Fox Chase Cancer Center, Philadelphia, PA 19111, USA
| | - Cindy M. Chau
- Immersion Science Program, Fox Chase Cancer Center, Philadelphia, PA 19111, USA
| | | | - Iliana Correa
- Immersion Science Program, Fox Chase Cancer Center, Philadelphia, PA 19111, USA
| | - Kelly Costa
- Immersion Science Program, Fox Chase Cancer Center, Philadelphia, PA 19111, USA
| | - Alberto Vargas
- Molecular Therapeutics Program, Fox Chase Cancer Center, Philadelphia, PA 19111, USA
| | - Aminah Johnson
- Molecular Therapeutics Program, Fox Chase Cancer Center, Philadelphia, PA 19111, USA
| | - Sheila M. Longo
- Molecular Therapeutics Program, Fox Chase Cancer Center, Philadelphia, PA 19111, USA
- Drexel University College of Medicine, Molecular and Cellular Biology and Genetics Graduate Program, Philadelphia, PA 19129, USA
| | - Jennifer I. Alexander
- Molecular Therapeutics Program, Fox Chase Cancer Center, Philadelphia, PA 19111, USA
- Immersion Science Program, Fox Chase Cancer Center, Philadelphia, PA 19111, USA
| | - Alana M. O'Reilly
- Molecular Therapeutics Program, Fox Chase Cancer Center, Philadelphia, PA 19111, USA
- Immersion Science Program, Fox Chase Cancer Center, Philadelphia, PA 19111, USA
- Drexel University College of Medicine, Molecular and Cellular Biology and Genetics Graduate Program, Philadelphia, PA 19129, USA
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10
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Fujino T, Asada S, Goyama S, Kitamura T. Mechanisms involved in hematopoietic stem cell aging. Cell Mol Life Sci 2022; 79:473. [PMID: 35941268 PMCID: PMC11072869 DOI: 10.1007/s00018-022-04356-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Revised: 04/27/2022] [Accepted: 05/05/2022] [Indexed: 11/03/2022]
Abstract
Hematopoietic stem cells (HSCs) undergo progressive functional decline over time due to both internal and external stressors, leading to aging of the hematopoietic system. A comprehensive understanding of the molecular mechanisms underlying HSC aging will be valuable in developing novel therapies for HSC rejuvenation and to prevent the onset of several age-associated diseases and hematological malignancies. This review considers the general causes of HSC aging that range from cell-intrinsic factors to cell-extrinsic factors. In particular, epigenetics and inflammation have been implicated in the linkage of HSC aging, clonality, and oncogenesis. The challenges in clarifying mechanisms of HSC aging have accelerated the development of therapeutic interventions to rejuvenate HSCs, the major goal of aging research; these details are also discussed in this review.
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Affiliation(s)
- Takeshi Fujino
- Division of Cellular Therapy, The Institute of Medical Science, The University of Tokyo, Tokyo, 108-8639, Japan
| | - Shuhei Asada
- The Institute of Laboratory Animals, Tokyo Women's Medical University, Tokyo, 1628666, Japan
| | - Susumu Goyama
- Division of Molecular Oncology Department of Computational Biology and Medical Sciences, Graduate School of Frontier Sciences, The University of Tokyo, Tokyo, 1088639, Japan
| | - Toshio Kitamura
- Division of Cellular Therapy, The Institute of Medical Science, The University of Tokyo, Tokyo, 108-8639, Japan.
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11
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Nefzger CM, Jardé T, Srivastava A, Schroeder J, Rossello FJ, Horvay K, Prasko M, Paynter JM, Chen J, Weng CF, Sun YBY, Liu X, Chan E, Deshpande N, Chen X, Li YJ, Pflueger J, Engel RM, Knaupp AS, Tsyganov K, Nilsson SK, Lister R, Rackham OJL, Abud HE, Polo JM. Intestinal stem cell aging signature reveals a reprogramming strategy to enhance regenerative potential. NPJ Regen Med 2022; 7:31. [PMID: 35710627 PMCID: PMC9203768 DOI: 10.1038/s41536-022-00226-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Accepted: 04/25/2022] [Indexed: 12/13/2022] Open
Abstract
The impact of aging on intestinal stem cells (ISCs) has not been fully elucidated. In this study, we identified widespread epigenetic and transcriptional alterations in old ISCs. Using a reprogramming algorithm, we identified a set of key transcription factors (Egr1, Irf1, FosB) that drives molecular and functional differences between old and young states. Overall, by dissecting the molecular signature of aged ISCs, our study identified transcription factors that enhance the regenerative capacity of ISCs.
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Affiliation(s)
- Christian M Nefzger
- Department of Anatomy and Developmental Biology, Monash University, Clayton, VIC, Australia.,Australian Regenerative Medicine Institute, Monash University, Clayton, VIC, Australia.,Development and Stem Cells Program, Monash Biomedicine Discovery Institute, Monash University, Clayton, VIC, Australia.,Institute for Molecular Bioscience, University of Queensland, St Lucia, QLD, Australia
| | - Thierry Jardé
- Department of Anatomy and Developmental Biology, Monash University, Clayton, VIC, Australia.,Development and Stem Cells Program, Monash Biomedicine Discovery Institute, Monash University, Clayton, VIC, Australia.,Cancer Program, Monash Biomedicine Discovery Institute, Monash University, Clayton, VIC, Australia
| | - Akanksha Srivastava
- Australian Research Council Centre of Excellence in Plant Energy Biology, School of Molecular Sciences, The University of Western Australia, Crawley, WA, Australia
| | - Jan Schroeder
- Department of Anatomy and Developmental Biology, Monash University, Clayton, VIC, Australia.,Australian Regenerative Medicine Institute, Monash University, Clayton, VIC, Australia.,Development and Stem Cells Program, Monash Biomedicine Discovery Institute, Monash University, Clayton, VIC, Australia
| | - Fernando J Rossello
- Department of Anatomy and Developmental Biology, Monash University, Clayton, VIC, Australia.,Australian Regenerative Medicine Institute, Monash University, Clayton, VIC, Australia.,Development and Stem Cells Program, Monash Biomedicine Discovery Institute, Monash University, Clayton, VIC, Australia
| | - Katja Horvay
- Department of Anatomy and Developmental Biology, Monash University, Clayton, VIC, Australia.,Development and Stem Cells Program, Monash Biomedicine Discovery Institute, Monash University, Clayton, VIC, Australia.,Cancer Program, Monash Biomedicine Discovery Institute, Monash University, Clayton, VIC, Australia
| | - Mirsada Prasko
- Department of Anatomy and Developmental Biology, Monash University, Clayton, VIC, Australia.,Development and Stem Cells Program, Monash Biomedicine Discovery Institute, Monash University, Clayton, VIC, Australia.,Cancer Program, Monash Biomedicine Discovery Institute, Monash University, Clayton, VIC, Australia
| | - Jacob M Paynter
- Department of Anatomy and Developmental Biology, Monash University, Clayton, VIC, Australia.,Australian Regenerative Medicine Institute, Monash University, Clayton, VIC, Australia.,Development and Stem Cells Program, Monash Biomedicine Discovery Institute, Monash University, Clayton, VIC, Australia
| | - Joseph Chen
- Department of Anatomy and Developmental Biology, Monash University, Clayton, VIC, Australia.,Australian Regenerative Medicine Institute, Monash University, Clayton, VIC, Australia.,Development and Stem Cells Program, Monash Biomedicine Discovery Institute, Monash University, Clayton, VIC, Australia
| | - Chen-Fang Weng
- Department of Anatomy and Developmental Biology, Monash University, Clayton, VIC, Australia.,Development and Stem Cells Program, Monash Biomedicine Discovery Institute, Monash University, Clayton, VIC, Australia.,Cancer Program, Monash Biomedicine Discovery Institute, Monash University, Clayton, VIC, Australia
| | - Yu B Y Sun
- Department of Anatomy and Developmental Biology, Monash University, Clayton, VIC, Australia.,Development and Stem Cells Program, Monash Biomedicine Discovery Institute, Monash University, Clayton, VIC, Australia
| | - Xiaodong Liu
- Department of Anatomy and Developmental Biology, Monash University, Clayton, VIC, Australia.,Australian Regenerative Medicine Institute, Monash University, Clayton, VIC, Australia.,Development and Stem Cells Program, Monash Biomedicine Discovery Institute, Monash University, Clayton, VIC, Australia
| | - Eva Chan
- Department of Anatomy and Developmental Biology, Monash University, Clayton, VIC, Australia.,Development and Stem Cells Program, Monash Biomedicine Discovery Institute, Monash University, Clayton, VIC, Australia.,Cancer Program, Monash Biomedicine Discovery Institute, Monash University, Clayton, VIC, Australia
| | - Nikita Deshpande
- Institute for Molecular Bioscience, University of Queensland, St Lucia, QLD, Australia
| | - Xiaoli Chen
- Institute for Molecular Bioscience, University of Queensland, St Lucia, QLD, Australia
| | - Y Jinhua Li
- Department of Anatomy and Developmental Biology, Monash University, Clayton, VIC, Australia.,Development and Stem Cells Program, Monash Biomedicine Discovery Institute, Monash University, Clayton, VIC, Australia
| | - Jahnvi Pflueger
- Australian Research Council Centre of Excellence in Plant Energy Biology, School of Molecular Sciences, The University of Western Australia, Crawley, WA, Australia.,Harry Perkins Institute of Medical Research, Nedlands, WA, Australia
| | - Rebekah M Engel
- Department of Anatomy and Developmental Biology, Monash University, Clayton, VIC, Australia.,Development and Stem Cells Program, Monash Biomedicine Discovery Institute, Monash University, Clayton, VIC, Australia.,Cabrini Monash University Department of Surgery, Cabrini Hospital, Malvern, VIC, Australia
| | - Anja S Knaupp
- Department of Anatomy and Developmental Biology, Monash University, Clayton, VIC, Australia.,Australian Regenerative Medicine Institute, Monash University, Clayton, VIC, Australia.,Development and Stem Cells Program, Monash Biomedicine Discovery Institute, Monash University, Clayton, VIC, Australia
| | - Kirill Tsyganov
- Monash Bioinformatics Platform, Monash University, Clayton, VIC, Australia
| | - Susan K Nilsson
- Australian Regenerative Medicine Institute, Monash University, Clayton, VIC, Australia.,Biomedical Manufacturing CSIRO, Clayton, VIC, Australia
| | - Ryan Lister
- Australian Research Council Centre of Excellence in Plant Energy Biology, School of Molecular Sciences, The University of Western Australia, Crawley, WA, Australia.,Harry Perkins Institute of Medical Research, Nedlands, WA, Australia
| | - Owen J L Rackham
- Program in Cardiovascular and Metabolic Disorders, Duke-National University of Singapore Medical School, Singapore, Singapore
| | - Helen E Abud
- Department of Anatomy and Developmental Biology, Monash University, Clayton, VIC, Australia. .,Development and Stem Cells Program, Monash Biomedicine Discovery Institute, Monash University, Clayton, VIC, Australia. .,Cancer Program, Monash Biomedicine Discovery Institute, Monash University, Clayton, VIC, Australia.
| | - Jose M Polo
- Department of Anatomy and Developmental Biology, Monash University, Clayton, VIC, Australia. .,Australian Regenerative Medicine Institute, Monash University, Clayton, VIC, Australia. .,Development and Stem Cells Program, Monash Biomedicine Discovery Institute, Monash University, Clayton, VIC, Australia. .,Adelaide Centre for Epigenetics, The University of Adelaide, Adelaide, SA, Australia. .,The South Australian Immunogenomics Cancer Institute, The University of Adelaide, Adelaide, SA, Australia.
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12
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Konturek-Ciesla A, Bryder D. Stem Cells, Hematopoiesis and Lineage Tracing: Transplantation-Centric Views and Beyond. Front Cell Dev Biol 2022; 10:903528. [PMID: 35573680 PMCID: PMC9091331 DOI: 10.3389/fcell.2022.903528] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Accepted: 04/12/2022] [Indexed: 12/26/2022] Open
Abstract
An appropriate production of mature blood cells, or hematopoiesis, is essential for organismal health and homeostasis. In this developmental cascade, hematopoietic stem cells (HSCs) differentiate into intermediate progenitor types, that subsequently give rise to the many distinct blood cell lineages. Here, we describe tools and methods that permit for temporal and native clonal-level HSC lineage tracing in the mouse, and that can now be combined with emerging single-cell molecular analyses. We integrate new insights derived from such experimental paradigms with past knowledge, which has predominantly been derived from transplantation-based approaches. Finally, we outline current knowledge and novel strategies derived from studies aimed to trace human HSC-derived hematopoiesis.
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13
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Teissier T, Boulanger E, Cox LS. Interconnections between Inflammageing and Immunosenescence during Ageing. Cells 2022; 11:359. [PMID: 35159168 PMCID: PMC8834134 DOI: 10.3390/cells11030359] [Citation(s) in RCA: 83] [Impact Index Per Article: 41.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2021] [Revised: 01/13/2022] [Accepted: 01/15/2022] [Indexed: 02/04/2023] Open
Abstract
Acute inflammation is a physiological response to injury or infection, with a cascade of steps that ultimately lead to the recruitment of immune cells to clear invading pathogens and heal wounds. However, chronic inflammation arising from the continued presence of the initial trigger, or the dysfunction of signalling and/or effector pathways, is harmful to health. While successful ageing in older adults, including centenarians, is associated with low levels of inflammation, elevated inflammation increases the risk of poor health and death. Hence inflammation has been described as one of seven pillars of ageing. Age-associated sterile, chronic, and low-grade inflammation is commonly termed inflammageing-it is not simply a consequence of increasing chronological age, but is also a marker of biological ageing, multimorbidity, and mortality risk. While inflammageing was initially thought to be caused by "continuous antigenic load and stress", reports from the last two decades describe a much more complex phenomenon also involving cellular senescence and the ageing of the immune system. In this review, we explore some of the main sources and consequences of inflammageing in the context of immunosenescence and highlight potential interventions. In particular, we assess the contribution of cellular senescence to age-associated inflammation, identify patterns of pro- and anti-inflammatory markers characteristic of inflammageing, describe alterations in the ageing immune system that lead to elevated inflammation, and finally assess the ways that diet, exercise, and pharmacological interventions can reduce inflammageing and thus, improve later life health.
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Affiliation(s)
- Thibault Teissier
- Department of Biochemistry, University of Oxford, South Parks Road, Oxford OX1 3QU, UK;
| | - Eric Boulanger
- Univ. Lille, Inserm, CHU Lille, Institut Pasteur de Lille, U1167—RID-AGE—Facteurs de Risque et Déterminants Moléculaires des Maladies Liées au Vieillissement, F-59000 Lille, France;
| | - Lynne S. Cox
- Department of Biochemistry, University of Oxford, South Parks Road, Oxford OX1 3QU, UK;
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14
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Walczak BE, Jiao H, Lee MS, Li WJ. Reprogrammed Synovial Fluid-Derived Mesenchymal Stem/Stromal Cells Acquire Enhanced Therapeutic Potential for Articular Cartilage Repair. Cartilage 2021; 13:530S-543S. [PMID: 34467773 PMCID: PMC8804808 DOI: 10.1177/19476035211040858] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
OBJECTIVES Functions of mesenchymal stem/stromal cells (MSCs) are affected by patient-dependent factors such as age and health condition. To tackle this problem, we used the cellular reprogramming technique to epigenetically alter human MSCs derived from the synovial fluid of joints with osteoarthritis (OA) to explore the potential of reprogrammed MSCs for repairing articular cartilage. MATERIALS AND METHODS MSCs isolated from the synovial fluid of three patients' OA knees (Pa-MSCs) were reprogrammed through overexpression of pluripotency factors and then induced for differentiation to establish reprogrammed MSC (Re-MSC) lines. We compared the in vitro growth characteristics, chondrogenesis for articular cartilage chondrocytes, and immunomodulatory capacity. We also evaluated the capability of Re-MSCs to repair articular cartilage damage in an animal model with spontaneous OA. RESULTS Our results showed that Re-MSCs increased the in vitro proliferative capacity and improved chondrogenic differentiation toward articular cartilage-like chondrocyte phenotypes with increased THBS4 and SIX1 and decreased ALPL and COL10A1, compared to Pa-MSCs. In addition, Re-MSC-derived chondrocytes expressing elevated COL2A and COL2B were more mature than parental cell-derived ones. The enhancement in chondrogenesis of Re-MSC involves the upregulation of sonic hedgehog signaling. Moreover, Re-MSCs improved the repair of articular cartilage in an animal model of spontaneous OA. CONCLUSIONS Epigenetic reprogramming promotes MSCs harvested from OA patients to increase phenotypic characteristics and gain robust functions. In addition, Re-MSCs acquire an enhanced potential for articular cartilage repair. Our study here demonstrates that the reprogramming strategy provides a potential solution to the challenge of variation in MSC quality.
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Affiliation(s)
- Brian E. Walczak
- Department of Orthopedics and
Rehabilitation, University of Wisconsin-Madison, Madison, WI, USA
| | - Hongli Jiao
- Department of Orthopedics and
Rehabilitation, University of Wisconsin-Madison, Madison, WI, USA
| | - Ming-Song Lee
- Department of Orthopedics and
Rehabilitation, University of Wisconsin-Madison, Madison, WI, USA
- Department of Biomedical Engineering,
University of Wisconsin-Madison, Madison, WI, USA
| | - Wan-Ju Li
- Department of Orthopedics and
Rehabilitation, University of Wisconsin-Madison, Madison, WI, USA
- Department of Biomedical Engineering,
University of Wisconsin-Madison, Madison, WI, USA
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15
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Restoration of aged hematopoietic cells by their young counterparts through instructive microvesicles release. Aging (Albany NY) 2021; 13:23981-24016. [PMID: 34762598 PMCID: PMC8610119 DOI: 10.18632/aging.203689] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2021] [Accepted: 10/26/2021] [Indexed: 12/14/2022]
Abstract
This study addresses the potential to reverse age-associated morbidity by establishing methods to restore the aged hematopoietic system. Parabiotic animal models indicated that young secretome could restore aged tissues, leading us to establish a heterochronic transwell system with aged mobilized peripheral blood (MPB), co-cultured with young MPB or umbilical cord blood (UCB) cells. Functional studies and omics approaches indicate that the miRNA cargo of microvesicles (MVs) restores the aged hematopoietic system. The in vitro findings were validated in immune deficient (NSG) mice carrying an aged hematopoietic system, improving aged hallmarks such as increased lymphoid:myeloid ratio, decreased inflammation and cellular senescence. Elevated MYC and E2F pathways, and decreased p53 were key to hematopoietic restoration. These processes require four restorative miRs that target the genes for transcription/differentiation, namely PAX and phosphatase PPMIF. These miRs when introduced in aged cells were sufficient to restore the aged hematopoietic system in NSG mice. The aged MPBs were the drivers of their own restoration, as evidenced by the changes from distinct baseline miR profiles in MPBs and UCB to comparable expressions after exposure to aged MPBs. Restorative natural killer cells eliminated dormant breast cancer cells in vivo, indicating the broad relevance of this cellular paradigm - preventing and reversing age-associated disorders such as clearance of early malignancies and enhanced responses to vaccine and infection.
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16
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Kim YH, Im GB, Kim SW, Kim YJ, Yu T, Lee JR, Um SH, Joung YK, Bhang SH. Anti-senescence ion-delivering nanocarrier for recovering therapeutic properties of long-term-cultured human adipose-derived stem cells. J Nanobiotechnology 2021; 19:352. [PMID: 34717632 PMCID: PMC8557526 DOI: 10.1186/s12951-021-01098-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2021] [Accepted: 10/20/2021] [Indexed: 01/03/2023] Open
Abstract
BACKGROUND Human adipose-derived stem cells (hADSCs) have been used in various fields of tissue engineering because of their promising therapeutic efficacy. However, the stemness of hADSCs cannot be maintained for long durations, and their therapeutic cellular functions, such as paracrine factor secretion decrease during long-term cell culture. To facilitate the use of long-term-cultured hADSCs (L-ADSCs), we designed a novel therapeutic anti-senescence ion-delivering nanocarrier (AIN) that is capable of recovering the therapeutic properties of L-ADSCs. In the present study, we introduced a low-pH-responsive ion nanocarrier capable of delivering transition metal ions that can enhance angiogenic paracrine factor secretion from L-ADSCs. The AINs were delivered to L-ADSCs in an intracellular manner through endocytosis. RESULTS Low pH conditions within the endosomes induced the release of transition metal ions (Fe) into the L-ADSCs that in turn caused a mild elevation in the levels of reactive oxygen species (ROS). This mild elevation in ROS levels induced a downregulation of senescence-related gene expression and an upregulation of stemness-related gene expression. The angiogenic paracrine factor secretion from L-ADSCs was significantly enhanced, and this was evidenced by the observed therapeutic efficacy in response to treatment of a wound-closing mouse model with conditioned medium obtained from AIN-treated L-ADSCs that was similar to that observed in response to treatment with short-term-cultured adipose-derived stem cells. CONCLUSIONS This study suggests a novel method and strategy for cell-based tissue regeneration that can overcome the limitations of the low stemness and therapeutic efficacy of stem cells that occurs during long-term cell culture.
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Affiliation(s)
- Yeong Hwan Kim
- School of Chemical Engineering, Sungkyunkwan University, Suwon, 440-746, Republic of Korea
| | - Gwang-Bum Im
- School of Chemical Engineering, Sungkyunkwan University, Suwon, 440-746, Republic of Korea
| | - Sung-Won Kim
- School of Chemical Engineering, Sungkyunkwan University, Suwon, 440-746, Republic of Korea
| | - Yu-Jin Kim
- School of Chemical Engineering, Sungkyunkwan University, Suwon, 440-746, Republic of Korea
| | - Taekyung Yu
- Department of Chemical Engineering, College of Engineering, Kyung Hee University, Yongin, 17104, Republic of Korea
| | - Ju-Ro Lee
- Center for Biomaterials, Biomedical Research Institute, Korea Institute of Science and Technology, Hwarang-ro 14-gil 5, Seoungbuk-gu, Seoul, 02792, Republic of Korea
| | - Soong Ho Um
- School of Chemical Engineering, Sungkyunkwan University, Suwon, 440-746, Republic of Korea
| | - Yoon Ki Joung
- Center for Biomaterials, Biomedical Research Institute, Korea Institute of Science and Technology, Hwarang-ro 14-gil 5, Seoungbuk-gu, Seoul, 02792, Republic of Korea
- Division of Bio-Medical Science & Technology, University of Science and Technology, 113 Gwahangno, Yuseong-gu, Daejeon, 305-333, Republic of Korea
| | - Suk Ho Bhang
- School of Chemical Engineering, Sungkyunkwan University, Suwon, 440-746, Republic of Korea.
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17
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Ducloux D, Legendre M, Bamoulid J, Saas P, Courivaud C, Crepin T. End-Stage Renal Disease-Related Accelerated Immune Senescence: Is Rejuvenation of the Immune System a Therapeutic Goal? Front Med (Lausanne) 2021; 8:720402. [PMID: 34540869 PMCID: PMC8446427 DOI: 10.3389/fmed.2021.720402] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Accepted: 08/17/2021] [Indexed: 02/05/2023] Open
Abstract
End-stage renal disease (ESRD) patients exhibit clinical features of premature ageing, including frailty, cardiovascular disease, and muscle wasting. Accelerated ageing also concerns the immune system. Patients with ESRD have both immune senescence and chronic inflammation that are resumed in the so-called inflammaging syndrome. Immune senescence is particularly characterised by premature loss of thymic function that is associated with hyporesponsiveness to vaccines, susceptibility to infections, and death. ESRD-related chronic inflammation has multiple causes and participates to accelerated cardiovascular disease. Although, both characterisation of immune senescence and its consequences are relatively well-known, mechanisms are more uncertain. However, prevention of immune senescence/inflammation or/and rejuvenation of the immune system are major goal to ameliorate clinical outcomes of ESRD patients.
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Affiliation(s)
- Didier Ducloux
- Inserm, UMR1098, Federation Hospitalo-Universitaire INCREASE, Besançon, France.,University Bourgogne Franche-Comté, Faculté de Médecine et de Pharmacie, LabEx LipSTIC, Besançon, France.,Structure Fédérative de Recherche, SFR FED4234, Besançon, France.,CHU Besançon, Department of Nephrology, Dialysis, and Renal Transplantation, Besançon, France
| | - Mathieu Legendre
- Inserm, UMR1098, Federation Hospitalo-Universitaire INCREASE, Besançon, France.,University Bourgogne Franche-Comté, Faculté de Médecine et de Pharmacie, LabEx LipSTIC, Besançon, France
| | - Jamal Bamoulid
- Inserm, UMR1098, Federation Hospitalo-Universitaire INCREASE, Besançon, France.,University Bourgogne Franche-Comté, Faculté de Médecine et de Pharmacie, LabEx LipSTIC, Besançon, France.,Structure Fédérative de Recherche, SFR FED4234, Besançon, France.,CHU Besançon, Department of Nephrology, Dialysis, and Renal Transplantation, Besançon, France
| | - Philippe Saas
- Inserm, UMR1098, Federation Hospitalo-Universitaire INCREASE, Besançon, France.,University Bourgogne Franche-Comté, Faculté de Médecine et de Pharmacie, LabEx LipSTIC, Besançon, France.,Structure Fédérative de Recherche, SFR FED4234, Besançon, France.,EFS Bourgogne Franche-Comté, Plateforme de Biomonitoring, CIC 1431/UMR1098, Besançon, France
| | - Cécile Courivaud
- Inserm, UMR1098, Federation Hospitalo-Universitaire INCREASE, Besançon, France.,University Bourgogne Franche-Comté, Faculté de Médecine et de Pharmacie, LabEx LipSTIC, Besançon, France.,Structure Fédérative de Recherche, SFR FED4234, Besançon, France.,CHU Besançon, Department of Nephrology, Dialysis, and Renal Transplantation, Besançon, France
| | - Thomas Crepin
- Inserm, UMR1098, Federation Hospitalo-Universitaire INCREASE, Besançon, France.,CHU Besançon, Department of Nephrology, Dialysis, and Renal Transplantation, Besançon, France
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18
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Larocca D, Lee J, West MD, Labat I, Sternberg H. No Time to Age: Uncoupling Aging from Chronological Time. Genes (Basel) 2021; 12:611. [PMID: 33919082 PMCID: PMC8143125 DOI: 10.3390/genes12050611] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2021] [Revised: 04/13/2021] [Accepted: 04/16/2021] [Indexed: 12/20/2022] Open
Abstract
Multicellular life evolved from simple unicellular organisms that could replicate indefinitely, being essentially ageless. At this point, life split into two fundamentally different cell types: the immortal germline representing an unbroken lineage of cell division with no intrinsic endpoint and the mortal soma, which ages and dies. In this review, we describe the germline as clock-free and the soma as clock-bound and discuss aging with respect to three DNA-based cellular clocks (telomeric, DNA methylation, and transposable element). The ticking of these clocks corresponds to the stepwise progressive limitation of growth and regeneration of somatic cells that we term somatic restriction. Somatic restriction acts in opposition to strategies that ensure continued germline replication and regeneration. We thus consider the plasticity of aging as a process not fixed to the pace of chronological time but one that can speed up or slow down depending on the rate of intrinsic cellular clocks. We further describe how germline factor reprogramming might be used to slow the rate of aging and potentially reverse it by causing the clocks to tick backward. Therefore, reprogramming may eventually lead to therapeutic strategies to treat degenerative diseases by altering aging itself, the one condition common to us all.
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Affiliation(s)
| | - Jieun Lee
- AgeX Therapeutics Inc., Alameda, CA 94501, USA; (J.L.); (M.D.W.); (I.L.); (H.S.)
| | - Michael D. West
- AgeX Therapeutics Inc., Alameda, CA 94501, USA; (J.L.); (M.D.W.); (I.L.); (H.S.)
| | - Ivan Labat
- AgeX Therapeutics Inc., Alameda, CA 94501, USA; (J.L.); (M.D.W.); (I.L.); (H.S.)
| | - Hal Sternberg
- AgeX Therapeutics Inc., Alameda, CA 94501, USA; (J.L.); (M.D.W.); (I.L.); (H.S.)
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19
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Kimmel JC, Yi N, Roy M, Hendrickson DG, Kelley DR. Differentiation reveals latent features of aging and an energy barrier in murine myogenesis. Cell Rep 2021; 35:109046. [PMID: 33910007 DOI: 10.1016/j.celrep.2021.109046] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2020] [Revised: 06/23/2020] [Accepted: 04/07/2021] [Indexed: 12/14/2022] Open
Abstract
Skeletal muscle experiences a decline in lean mass and regenerative potential with age, in part due to intrinsic changes in progenitor cells. However, it remains unclear how age-related changes in progenitors manifest across a differentiation trajectory. Here, we perform single-cell RNA sequencing (RNA-seq) on muscle mononuclear cells from young and aged mice and profile muscle stem cells (MuSCs) and fibro-adipose progenitors (FAPs) after differentiation. Differentiation increases the magnitude of age-related change in MuSCs and FAPs, but it also masks a subset of age-related changes present in progenitors. Using a dynamical systems approach and RNA velocity, we find that aged MuSCs follow the same differentiation trajectory as young cells but stall in differentiation near a commitment decision. Our results suggest that differentiation reveals latent features of aging and that fate commitment decisions are delayed in aged myogenic cells in vitro.
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Affiliation(s)
- Jacob C Kimmel
- Calico Life Sciences, 1170 Veterans Blvd., South San Francisco, CA 94080, USA.
| | - Nelda Yi
- Calico Life Sciences, 1170 Veterans Blvd., South San Francisco, CA 94080, USA
| | - Margaret Roy
- Calico Life Sciences, 1170 Veterans Blvd., South San Francisco, CA 94080, USA
| | - David G Hendrickson
- Calico Life Sciences, 1170 Veterans Blvd., South San Francisco, CA 94080, USA
| | - David R Kelley
- Calico Life Sciences, 1170 Veterans Blvd., South San Francisco, CA 94080, USA.
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20
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Chiavellini P, Canatelli-Mallat M, Lehmann M, Gallardo MD, Herenu CB, Cordeiro JL, Clement J, Goya RG. Aging and rejuvenation - a modular epigenome model. Aging (Albany NY) 2021; 13:4734-4746. [PMID: 33627519 PMCID: PMC7950254 DOI: 10.18632/aging.202712] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Accepted: 02/08/2021] [Indexed: 12/21/2022]
Abstract
The view of aging has evolved in parallel with the advances in biomedical sciences. Long considered as an irreversible process where interventions were only aimed at slowing down its progression, breakthrough discoveries like animal cloning and cell reprogramming have deeply changed our understanding of postnatal development, giving rise to the emerging view that the epigenome is the driver of aging. The idea was significantly strengthened by the converging discovery that DNA methylation (DNAm) at specific CpG sites could be used as a highly accurate biomarker of age defined by an algorithm known as the Horvath clock. It was at this point where epigenetic rejuvenation came into play as a strategy to reveal to what extent biological age can be set back by making the clock tick backwards. Initial evidence suggests that when the clock is forced to tick backwards in vivo, it is only able to drag the phenotype to a partially rejuvenated condition. In order to explain the results, a bimodular epigenome is proposed, where module A represents the DNAm clock component and module B the remainder of the epigenome. Epigenetic rejuvenation seems to hold the key to arresting or even reversing organismal aging.
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Affiliation(s)
- Priscila Chiavellini
- Institute for Biochemical Research (INIBIOLP) - Histology B and Pathology B, School of Medicine, National University of La Plata, La Plata, Argentina
| | - Martina Canatelli-Mallat
- Institute for Biochemical Research (INIBIOLP) - Histology B and Pathology B, School of Medicine, National University of La Plata, La Plata, Argentina
| | - Marianne Lehmann
- Institute for Biochemical Research (INIBIOLP) - Histology B and Pathology B, School of Medicine, National University of La Plata, La Plata, Argentina
| | - Maria D. Gallardo
- Institute for Biochemical Research (INIBIOLP) - Histology B and Pathology B, School of Medicine, National University of La Plata, La Plata, Argentina
| | - Claudia B. Herenu
- Institute for Experimental Pharmacology (IFEC), School of Chemical Sciences, National University of Cordoba, Cordoba, Argentina
| | | | | | - Rodolfo G. Goya
- Institute for Biochemical Research (INIBIOLP) - Histology B and Pathology B, School of Medicine, National University of La Plata, La Plata, Argentina
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21
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Jayarajan J, Milsom MD. The role of the stem cell epigenome in normal aging and rejuvenative therapy. Hum Mol Genet 2020; 29:R236-R247. [PMID: 32744315 DOI: 10.1093/hmg/ddaa167] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Revised: 07/27/2020] [Accepted: 07/27/2020] [Indexed: 12/21/2022] Open
Abstract
Adult stem cells are ultimately responsible for the lifelong maintenance of regenerating of tissues during both homeostasis and following injury. Hence, the functional attrition of adult stem cells is thought to be an important driving factor behind the progressive functional decline of tissues and organs that is observed during aging. The mechanistic cause underlying this age-associated exhaustion of functional stem cells is likely to be complex and multifactorial. However, it is clear that progressive remodeling of the epigenome and the resulting deregulation of gene expression programs can be considered a hallmark of aging, and is likely a key factor in mediating altered biological function of aged stem cells. In this review, we outline cell intrinsic and extrinsic mediators of epigenome remodeling during aging; discuss how such changes can impact on stem cell function; and describe how resetting the aged epigenome may rejuvenate some of the biological characteristics of stem cells.
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Affiliation(s)
- Jeyan Jayarajan
- Division of Experimental Hematology, German Cancer Research Center (DKFZ), Heidelberg, Germany.,Faculty of Biosciences, University of Heidelberg, Heidelberg, Germany
| | - Michael D Milsom
- Division of Experimental Hematology, German Cancer Research Center (DKFZ), Heidelberg, Germany.,Heidelberg Institute for Stem Cell Technology and Experimental Medicine (HI-STEM).,DKFZ-ZMBH Alliance, Heidelberg, Germany
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22
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Mansell E, Sigurdsson V, Deltcheva E, Brown J, James C, Miharada K, Soneji S, Larsson J, Enver T. Mitochondrial Potentiation Ameliorates Age-Related Heterogeneity in Hematopoietic Stem Cell Function. Cell Stem Cell 2020; 28:241-256.e6. [PMID: 33086034 DOI: 10.1016/j.stem.2020.09.018] [Citation(s) in RCA: 75] [Impact Index Per Article: 18.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2020] [Revised: 08/25/2020] [Accepted: 09/29/2020] [Indexed: 02/02/2023]
Abstract
Aging is associated with reduced fitness and increased myeloid bias of the hematopoietic stem cell (HSC) compartment, causing increased risk of immune compromise, anemia, and malignancy. We show that mitochondrial membrane potential (MMP) can be used to prospectively isolate chronologically old HSCs with transcriptional features and functional attributes characteristic of young HSCs, including a high rate of transcription and balanced lineage-affiliated programs. Strikingly, MMP is a stronger determinant of the quantitative and qualitative transcriptional state of HSCs than chronological age, and transcriptional consequences of manipulation of MMP in HSCs within their native niche suggest a causal relationship. Accordingly, we show that pharmacological enhancement of MMP in old HSCs in vivo increases engraftment potential upon transplantation and reverses myeloid-biased peripheral blood output at steady state. Our results demonstrate that MMP is a source of heterogeneity in old HSCs, and its pharmacological manipulation can alter transcriptional programs with beneficial consequences for function.
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Affiliation(s)
- Els Mansell
- Molecular Medicine and Gene Therapy, Lund University, 22362 Lund, Sweden; Cancer Institute, University College London, London WC1E 6DD, United Kingdom.
| | | | - Elitza Deltcheva
- Cancer Institute, University College London, London WC1E 6DD, United Kingdom
| | - John Brown
- Cancer Institute, University College London, London WC1E 6DD, United Kingdom
| | - Chela James
- Cancer Institute, University College London, London WC1E 6DD, United Kingdom
| | - Kenichi Miharada
- Molecular Medicine and Gene Therapy, Lund University, 22362 Lund, Sweden
| | - Shamit Soneji
- Department of Molecular Hematology, Lund University, 22362 Lund, Sweden
| | - Jonas Larsson
- Molecular Medicine and Gene Therapy, Lund University, 22362 Lund, Sweden
| | - Tariq Enver
- Molecular Medicine and Gene Therapy, Lund University, 22362 Lund, Sweden; Cancer Institute, University College London, London WC1E 6DD, United Kingdom.
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23
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SanMiguel JM, Young K, Trowbridge JJ. Hand in hand: intrinsic and extrinsic drivers of aging and clonal hematopoiesis. Exp Hematol 2020; 91:1-9. [PMID: 32991978 DOI: 10.1016/j.exphem.2020.09.197] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2020] [Revised: 09/23/2020] [Accepted: 09/24/2020] [Indexed: 12/17/2022]
Abstract
Over the past 25 years, the importance of hematopoietic stem cell (HSC) aging in overall hematopoietic and immune system health span has been appreciated. Much work has been done in model organisms to understand the intrinsic dysregulation that occurs in HSCs during aging, with the goal of identifying modifiable mechanisms that represent the proverbial "fountain of youth." Much more recently, the discovery of somatic mutations that are found to provide a selective advantage to HSCs and accumulate in the hematopoietic system during aging, termed clonal hematopoiesis (CH), inspires revisiting many of these previously defined drivers of HSC aging in the context of these somatic mutations. To truly understand these processes and develop a holistic picture of HSC aging, ongoing and future studies must include investigation of the critical changes that occur in the HSC niche or bone marrow microenvironment with aging, as increasing evidence supports that these HSC-extrinsic alterations provide necessary inflammation, signaling pathway activation or repression, and other selective pressures to favor HSC aging-associated phenotypes and CH. Here, we provide our perspectives based on the past 8 years of our own laboratory's investigations into these mechanisms and chart a path for integrative studies that, in our opinion, will provide an ideal opportunity to discover HSC and hematopoietic health span-extending interventions. This path includes examining when and how aging-associated HSC-intrinsic and HSC-extrinsic changes accumulate over time in different individuals and developing new models to track and test relevant HSC-extrinsic changes, complementary to innovative HSC lineage tracing systems that have recently been developed.
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24
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Spehar K, Pan A, Beerman I. Restoring aged stem cell functionality: Current progress and future directions. Stem Cells 2020; 38:1060-1077. [PMID: 32473067 PMCID: PMC7483369 DOI: 10.1002/stem.3234] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2020] [Revised: 04/07/2020] [Accepted: 05/11/2020] [Indexed: 12/15/2022]
Abstract
Stem cell dysfunction is a hallmark of aging, associated with the decline of physical and cognitive abilities of humans and other mammals [Cell 2013;153:1194]. Therefore, it has become an active area of research within the aging and stem cell fields, and various techniques have been employed to mitigate the decline of stem cell function both in vitro and in vivo. While some techniques developed in model organisms are not directly translatable to humans, others show promise in becoming clinically relevant to delay or even mitigate negative phenotypes associated with aging. This review focuses on diet, treatment, and small molecule interventions that provide evidence of functional improvement in at least one type of aged adult stem cell.
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Affiliation(s)
- Kevin Spehar
- Epigenetics and Stem Cell Aging Unit, Translational Gerontology Branch, National Institute on Aging, NIH, BRC, Baltimore, Maryland
| | - Andrew Pan
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology, Atlanta, Georgia
| | - Isabel Beerman
- Epigenetics and Stem Cell Aging Unit, Translational Gerontology Branch, National Institute on Aging, NIH, BRC, Baltimore, Maryland
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25
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Pangrazzi L, Weinberger B. T cells, aging and senescence. Exp Gerontol 2020; 134:110887. [PMID: 32092501 DOI: 10.1016/j.exger.2020.110887] [Citation(s) in RCA: 84] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2019] [Revised: 01/29/2020] [Accepted: 02/20/2020] [Indexed: 12/16/2022]
Abstract
The T cell compartment undergoes characteristic changes with age, which contribute to increased incidence and severity of infections and reduced immunogenicity and efficacy of many vaccines in the older population. Production of naïve T cells is severely impaired due to a decreased output of lymphoid cells from the bone marrow and the involution of the thymus. At the same time, antigen-experienced, highly differentiated T cells accumulate resulting in a diminished T cell receptor repertoire. These cells show some similarities with senescent cells, such as shorter telomers, accumulated DNA damage and metabolic changes. Latent infection with Cytomegalovirus also impacts the T cell compartment and aggravates several of its age-associated changes. Loss of CD28 expression is one hallmark of T cells after repeated antigenic stimulation, but CD28- T cells cannot be considered truly senescent as e.g. they are still able to proliferate upon adequate stimulation. Several additional markers have been suggested in order to define a potential fully senescent T cell population, but no consensus definition has been reached so far. It has been postulated that highly differentiated senescent-like T cells are unable to eliminate other senescent cell types. Removal of senescent non-immune cells has been shown to be beneficial for the organism and a reliable definition of senescent T cells is essential for an extension of this concept to T cells.
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Affiliation(s)
- Luca Pangrazzi
- Institute for Biomedical Aging Research, Universität Innsbruck, Innsbruck, Austria
| | - Birgit Weinberger
- Institute for Biomedical Aging Research, Universität Innsbruck, Innsbruck, Austria.
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26
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Mejia-Ramirez E, Florian MC. Understanding intrinsic hematopoietic stem cell aging. Haematologica 2019; 105:22-37. [PMID: 31806687 PMCID: PMC6939535 DOI: 10.3324/haematol.2018.211342] [Citation(s) in RCA: 76] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2019] [Accepted: 11/14/2019] [Indexed: 01/03/2023] Open
Abstract
Hematopoietic stem cells (HSC) sustain blood production over the entire life-span of an organism. It is of extreme importance that these cells maintain self-renewal and differentiation potential over time in order to preserve homeostasis of the hematopoietic system. Many of the intrinsic aspects of HSC are affected by the aging process resulting in a deterioration in their potential, independently of their microenvironment. Here we review recent findings characterizing most of the intrinsic aspects of aged HSC, ranging from phenotypic to molecular alterations. Historically, DNA damage was thought to be the main cause of HSC aging. However, over recent years, many new findings have defined an increasing number of biological processes that intrinsically change with age in HSC. Epigenetics and chromatin architecture, together with autophagy, proteostasis and metabolic changes, and how they are interconnected, are acquiring growing importance for understanding the intrinsic aging of stem cells. Given the increase in populations of older subjects worldwide, and considering that aging is the primary risk factor for most diseases, understanding HSC aging becomes particularly relevant also in the context of hematologic disorders, such as myelodysplastic syndromes and acute myeloid leukemia. Research on intrinsic mechanisms responsible for HSC aging is providing, and will continue to provide, new potential molecular targets to possibly ameliorate or delay aging of the hematopoietic system and consequently improve the outcome of hematologic disorders in the elderly. The niche-dependent contributions to hematopoietic aging are discussed in another review in this same issue of the Journal.
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Affiliation(s)
- Eva Mejia-Ramirez
- Center for Regenerative Medicine in Barcelona (CMRB), Bellvitge Institute for Biomedical Research (IDIBELL), Barcelona, Spain.,Center for Networked Biomedical Research on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Madrid, 28029, Spain
| | - Maria Carolina Florian
- Center for Regenerative Medicine in Barcelona (CMRB), Bellvitge Institute for Biomedical Research (IDIBELL), Barcelona, Spain .,Institute of Molecular Medicine and Stem Cell Aging, Ulm University, Ulm, Germany EM-R and MCF contributed equally to this work
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27
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Abstract
Genetic defects that accumulate in haematopoietic stem cells (HSCs) are thought to be responsible for age-related changes in haematopoiesis that include a decline in lymphopoiesis and skewing towards the myeloid lineage. This HSC-centric view is based largely on studies showing that HSCs from aged mice exhibit these lineage biases following transplantation into irradiated young recipient mice. In this Opinion article, we make the case that the reliance on this approach has led to inaccurate conclusions regarding the effects of ageing on blood-forming stem cells; we suggest instead that changes in the environment contribute to haematopoietic system ageing. We propose that a complete understanding of how ageing affects haematopoiesis depends on the analysis of blood cell production in unperturbed mice. We describe how this can be achieved using in situ fate mapping. This approach indicates that changes in downstream progenitors, in addition to any HSC defects, may explain the reduced lymphopoiesis and sustained myelopoiesis that occur during ageing.
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28
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Adelman ER, Huang HT, Roisman A, Olsson A, Colaprico A, Qin T, Lindsley RC, Bejar R, Salomonis N, Grimes HL, Figueroa ME. Aging Human Hematopoietic Stem Cells Manifest Profound Epigenetic Reprogramming of Enhancers That May Predispose to Leukemia. Cancer Discov 2019; 9:1080-1101. [PMID: 31085557 PMCID: PMC7080409 DOI: 10.1158/2159-8290.cd-18-1474] [Citation(s) in RCA: 120] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2018] [Revised: 04/30/2019] [Accepted: 05/10/2019] [Indexed: 12/31/2022]
Abstract
Aging is associated with functional decline of hematopoietic stem cells (HSC) as well as an increased risk of myeloid malignancies. We performed an integrative characterization of epigenomic and transcriptomic changes, including single-cell RNA sequencing, during normal human aging. Lineage-CD34+CD38- cells [HSC-enriched (HSCe)] undergo age-associated epigenetic reprogramming consisting of redistribution of DNA methylation and reductions in H3K27ac, H3K4me1, and H3K4me3. This reprogramming of aged HSCe globally targets developmental and cancer pathways that are comparably altered in acute myeloid leukemia (AML) of all ages, encompassing loss of 4,646 active enhancers, 3,091 bivalent promoters, and deregulation of several epigenetic modifiers and key hematopoietic transcription factors, such as KLF6, BCL6, and RUNX3. Notably, in vitro downregulation of KLF6 results in impaired differentiation, increased colony-forming potential, and changes in expression that recapitulate aging and leukemia signatures. Thus, age-associated epigenetic reprogramming may form a predisposing condition for the development of age-related AML. SIGNIFICANCE: AML, which is more frequent in the elderly, is characterized by epigenetic deregulation. We demonstrate that epigenetic reprogramming of human HSCs occurs with age, affecting cancer and developmental pathways. Downregulation of genes epigenetically altered with age leads to impairment in differentiation and partially recapitulates aging phenotypes.This article is highlighted in the In This Issue feature, p. 983.
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Affiliation(s)
- Emmalee R Adelman
- Department of Human Genetics, University of Miami Miller School of Medicine, Miami, Florida.,Sylvester Comprehensive Cancer Center, University of Miami Miller School of Medicine, Miami, Florida.,Department of Pathology, University of Michigan Medical School, Ann Arbor, Michigan
| | - Hsuan-Ting Huang
- Department of Human Genetics, University of Miami Miller School of Medicine, Miami, Florida.,Sylvester Comprehensive Cancer Center, University of Miami Miller School of Medicine, Miami, Florida
| | - Alejandro Roisman
- Department of Human Genetics, University of Miami Miller School of Medicine, Miami, Florida.,Sylvester Comprehensive Cancer Center, University of Miami Miller School of Medicine, Miami, Florida
| | - André Olsson
- Division of Immunobiology and Center for Systems Immunology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
| | - Antonio Colaprico
- Department of Human Genetics, University of Miami Miller School of Medicine, Miami, Florida.,Sylvester Comprehensive Cancer Center, University of Miami Miller School of Medicine, Miami, Florida
| | - Tingting Qin
- Department of Computational Medicine and Bioinformatics, University of Michigan Medical School, Ann Arbor, Michigan
| | - R Coleman Lindsley
- Department of Medical Oncology, Division of Hematological Malignancies, Dana-Farber Cancer Institute, Boston, Massachusetts
| | - Rafael Bejar
- Division of Hematology and Oncology, Moores Cancer Center, University of California, San Diego, La Jolla, California
| | - Nathan Salomonis
- Division of Biomedical Informatics, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
| | - H Leighton Grimes
- Division of Immunobiology and Center for Systems Immunology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
| | - Maria E Figueroa
- Department of Human Genetics, University of Miami Miller School of Medicine, Miami, Florida. .,Sylvester Comprehensive Cancer Center, University of Miami Miller School of Medicine, Miami, Florida
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29
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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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30
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Goya RG, Lehmann M, Chiavellini P, Canatelli-Mallat M, Hereñú CB, Brown OA. Rejuvenation by cell reprogramming: a new horizon in gerontology. Stem Cell Res Ther 2018; 9:349. [PMID: 30558644 PMCID: PMC6296020 DOI: 10.1186/s13287-018-1075-y] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
The discovery of animal cloning and subsequent development of cell reprogramming technology were quantum leaps as they led to the achievement of rejuvenation by cell reprogramming and the emerging view that aging is a reversible epigenetic process. Here, we will first summarize the experimental achievements over the last 7 years in cell and animal rejuvenation. Then, a comparison will be made between the principles of the cumulative DNA damage theory of aging and the basic facts underlying the epigenetic model of aging, including Horvath's epigenetic clock. The third part will apply both models to two natural processes, namely, the setting of the aging clock in the mammalian zygote and the changes in the aging clock along successive generations in mammals. The first study demonstrating that skin fibroblasts from healthy centenarians can be rejuvenated by cell reprogramming was published in 2011 and will be discussed in some detail. Other cell rejuvenation studies in old humans and rodents published afterwards will be very briefly mentioned. The only in vivo study reporting that a number of organs of old progeric mice can be rejuvenated by cyclic partial reprogramming will also be described in some detail. The cumulative DNA damage theory of aging postulates that as an animal ages, toxic reactive oxygen species generated as byproducts of the mitochondria during respiration induce a random and progressive damage in genes thus leading cells to a progressive functional decline. The epigenetic model of aging postulates that there are epigenetic marks of aging that increase with age, leading to a progressive derepression of DNA which in turn causes deregulated expression of genes that disrupt cell function. The cumulative DNA damage model of aging fails to explain the resetting of the aging clock at the time of conception as well as the continued vitality of species as millenia go by. In contrast, the epigenetic model of aging straightforwardly explains both biologic phenomena. A plausible initial application of rejuvenation in vivo would be preventing adult individuals from aging thus eliminating a major risk factor for end of life pathologies. Further, it may allow the gradual achievement of whole body rejuvenation.
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Affiliation(s)
- Rodolfo G. Goya
- Institute for Biochemical Research (INIBIOLP) - Histology B & Pathology B, School of Medicine, National University of La Plata, CC 455, 1900 La Plata, Argentina
| | - Marianne Lehmann
- Institute for Biochemical Research (INIBIOLP) - Histology B & Pathology B, School of Medicine, National University of La Plata, CC 455, 1900 La Plata, Argentina
| | - Priscila Chiavellini
- Institute for Biochemical Research (INIBIOLP) - Histology B & Pathology B, School of Medicine, National University of La Plata, CC 455, 1900 La Plata, Argentina
| | - Martina Canatelli-Mallat
- Institute for Biochemical Research (INIBIOLP) - Histology B & Pathology B, School of Medicine, National University of La Plata, CC 455, 1900 La Plata, Argentina
| | - Claudia B. Hereñú
- Institute for Experimental Pharmacology Cordoba(IFEC), School of Chemical Sciences, National University of Cordoba, Cordoba, Argentina
| | - Oscar A. Brown
- Institute for Biochemical Research (INIBIOLP) - Histology B & Pathology B, School of Medicine, National University of La Plata, CC 455, 1900 La Plata, Argentina
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31
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Abstract
Abstract
Hematopoietic stem cells (HSCs) ensure a balanced production of all blood cells throughout life. As they age, HSCs gradually lose their self-renewal and regenerative potential, whereas the occurrence of cellular derailment strongly increases. Here we review our current understanding of the molecular mechanisms that contribute to HSC aging. We argue that most of the causes that underlie HSC aging result from cell-intrinsic pathways, and reflect on which aspects of the aging process may be reversible. Because many hematological pathologies are strongly age-associated, strategies to intervene in aspects of the stem cell aging process may have significant clinical relevance.
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32
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The impact of aging on primate hematopoiesis as interrogated by clonal tracking. Blood 2018; 131:1195-1205. [PMID: 29295845 DOI: 10.1182/blood-2017-08-802033] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2017] [Accepted: 12/21/2017] [Indexed: 01/04/2023] Open
Abstract
Age-associated changes in hematopoietic stem and progenitor cells (HSPCs) have been carefully documented in mouse models but poorly characterized in primates and humans. To investigate clinically relevant aspects of hematopoietic aging, we compared the clonal output of thousands of genetically barcoded HSPCs in aged vs young macaques after autologous transplantation. Aged macaques showed delayed emergence of output from multipotent (MP) clones, with persistence of lineage-biased clones for many months after engraftment. In contrast to murine aging models reporting persistence of myeloid-biased HSPCs, aged macaques demonstrated persistent output from both B-cell and myeloid-biased clones. Clonal expansions of MP, myeloid-biased, and B-biased clones occurred in aged macaques, providing a potential model for human clonal hematopoiesis of indeterminate prognosis. These results suggest that long-term MP HSPC output is impaired in aged macaques, resulting in differences in the kinetics and lineage reconstitution patterns between young and aged primates in an autologous transplantation setting.
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33
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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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