1
|
Konturek-Ciesla A, Bryder D. Revitalizing the Aging Immune System Through Selective Stem Cell Targeting. Cell Reprogram 2024; 26:93-95. [PMID: 38917436 DOI: 10.1089/cell.2024.0029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/27/2024] Open
Abstract
The interplay between aging and immune system deterioration presents a formidable challenge to human health, especially in the context of a globally aging population. Aging is associated with a decline in the body's ability to combat infections and an increased risk of various diseases, underlining the importance of rejuvenating the immune system as a strategy for promoting healthier aging. In issue 628 of Nature (2024), Ross et al. present a compelling study that introduces a novel strategy for rejuvenating the aged immune system (Ross et al., 2024). By using antibodies to selectively eliminate "aberrant" hematopoietic stem cells (HSCs), this research opens new avenues for addressing age-related immune deterioration.
Collapse
Affiliation(s)
- Anna Konturek-Ciesla
- Division of Molecular Hematology, Department of Laboratory Medicine, Medical Faculty, Lund Stem Cell Center, Lund University, Lund, Sweden
| | - David Bryder
- Division of Molecular Hematology, Department of Laboratory Medicine, Medical Faculty, Lund Stem Cell Center, Lund University, Lund, Sweden
| |
Collapse
|
2
|
Hematopoiesis, Inflammation and Aging-The Biological Background and Clinical Impact of Anemia and Increased C-Reactive Protein Levels on Elderly Individuals. J Clin Med 2022; 11:jcm11030706. [PMID: 35160156 PMCID: PMC8836692 DOI: 10.3390/jcm11030706] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Revised: 01/21/2022] [Accepted: 01/24/2022] [Indexed: 01/27/2023] Open
Abstract
Anemia and systemic signs of inflammation are common in elderly individuals and are associated with decreased survival. The common biological context for these two states is then the hallmarks of aging, i.e., genomic instability, telomere shortening, epigenetic alterations, loss of proteostasis, deregulated nutrient sensing, mitochondrial dysfunction, cellular senescence, stem cell exhaustion and altered intercellular communication. Such aging-associated alterations of hematopoietic stem cells are probably caused by complex mechanisms and depend on both the aging of hematopoietic (stem) cells and on the supporting stromal cells. The function of inflammatory or immunocompetent cells is also altered by aging. The intracellular signaling initiated by soluble proinflammatory mediators (e.g., IL1, IL6 and TNFα) is altered during aging and contributes to the development of both the inhibition of erythropoiesis with anemia as well as to the development of the acute-phase reaction as a systemic sign of inflammation with increased CRP levels. Both anemia and increased CRP levels are associated with decreased overall survival and increased cardiovascular mortality. The handling of elderly patients with inflammation and/or anemia should in our opinion be individualized; all of them should have a limited evaluation with regard to the cause of the abnormalities, but the extent of additional and especially invasive diagnostic evaluation should be based on an overall clinical evaluation and the possible therapeutic consequences.
Collapse
|
3
|
Broxmeyer HE, Liu Y, Kapur R, Orschell CM, Aljoufi A, Ropa JP, Trinh T, Burns S, Capitano ML. Fate of Hematopoiesis During Aging. What Do We Really Know, and What are its Implications? Stem Cell Rev Rep 2020; 16:1020-1048. [PMID: 33145673 PMCID: PMC7609374 DOI: 10.1007/s12015-020-10065-y] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/19/2020] [Indexed: 12/11/2022]
Abstract
There is an ongoing shift in demographics such that older persons will outnumber young persons in the coming years, and with it age-associated tissue attrition and increased diseases and disorders. There has been increased information on the association of the aging process with dysregulation of hematopoietic stem (HSC) and progenitor (HPC) cells, and hematopoiesis. This review provides an extensive up-to date summary on the literature of aged hematopoiesis and HSCs placed in context of potential artifacts of the collection and processing procedure, that may not be totally representative of the status of HSCs in their in vivo bone marrow microenvironment, and what the implications of this are for understanding aged hematopoiesis. This review covers a number of interactive areas, many of which have not been adequately explored. There are still many unknowns and mechanistic insights to be elucidated to better understand effects of aging on the hematopoietic system, efforts that will take multidisciplinary approaches, and that could lead to means to ameliorate at least some of the dysregulation of HSCs and HPCs associated with the aging process. Graphical Abstract.
Collapse
Affiliation(s)
- Hal E Broxmeyer
- Department of Microbiology and Immunology, Indiana University School of Medicine, 950 West Walnut Street, R2-302, Indianapolis, IN, 46202-5181, USA.
| | - Yan Liu
- Department of Pediatrics, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Reuben Kapur
- Department of Pediatrics, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Christie M Orschell
- Department of Medicine, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Arafat Aljoufi
- Department of Microbiology and Immunology, Indiana University School of Medicine, 950 West Walnut Street, R2-302, Indianapolis, IN, 46202-5181, USA
| | - James P Ropa
- Department of Microbiology and Immunology, Indiana University School of Medicine, 950 West Walnut Street, R2-302, Indianapolis, IN, 46202-5181, USA
| | - Thao Trinh
- Department of Microbiology and Immunology, Indiana University School of Medicine, 950 West Walnut Street, R2-302, Indianapolis, IN, 46202-5181, USA
| | - Sarah Burns
- Department of Pediatrics, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Maegan L Capitano
- Department of Microbiology and Immunology, Indiana University School of Medicine, 950 West Walnut Street, R2-302, Indianapolis, IN, 46202-5181, USA.
| |
Collapse
|
4
|
Nitta E, Itokawa N, Yabata S, Koide S, Hou LB, Oshima M, Aoyama K, Saraya A, Iwama A. Bmi1 counteracts hematopoietic stem cell aging by repressing target genes and enforcing the stem cell gene signature. Biochem Biophys Res Commun 2020; 521:612-619. [DOI: 10.1016/j.bbrc.2019.10.153] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2019] [Revised: 10/21/2019] [Accepted: 10/21/2019] [Indexed: 01/05/2023]
|
5
|
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.
Collapse
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
| |
Collapse
|
6
|
Buisman SC, de Haan G. Epigenetic Changes as a Target in Aging Haematopoietic Stem Cells and Age-Related Malignancies. Cells 2019; 8:E868. [PMID: 31405121 PMCID: PMC6721661 DOI: 10.3390/cells8080868] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2019] [Revised: 08/07/2019] [Accepted: 08/09/2019] [Indexed: 12/14/2022] Open
Abstract
Aging is associated with multiple molecular and functional changes in haematopoietic cells. Most notably, the self-renewal and differentiation potential of hematopoietic stem cells (HSCs) are compromised, resulting in myeloid skewing, reduced output of red blood cells and decreased generation of immune cells. These changes result in anaemia, increased susceptibility for infections and higher prevalence of haematopoietic malignancies. In HSCs, age-associated global epigenetic changes have been identified. These epigenetic alterations in aged HSCs can occur randomly (epigenetic drift) or are the result of somatic mutations in genes encoding for epigenetic proteins. Mutations in loci that encode epigenetic modifiers occur frequently in patients with haematological malignancies, but also in healthy elderly individuals at risk to develop these. It may be possible to pharmacologically intervene in the aberrant epigenetic program of derailed HSCs to enforce normal haematopoiesis or treat age-related haematopoietic diseases. Over the past decade our molecular understanding of epigenetic regulation has rapidly increased and drugs targeting epigenetic modifications are increasingly part of treatment protocols. The reversibility of epigenetic modifications renders these targets for novel therapeutics. In this review we provide an overview of epigenetic changes that occur in aging HSCs and age-related malignancies and discuss related epigenetic drugs.
Collapse
Affiliation(s)
- Sonja C Buisman
- European Research Institute for the Biology of Ageing, University Medical Center Groningen, University of Groningen, 9700 Groningen, The Netherlands.
| | - Gerald de Haan
- European Research Institute for the Biology of Ageing, University Medical Center Groningen, University of Groningen, 9700 Groningen, The Netherlands
| |
Collapse
|
7
|
Lyne AM, Kent DG, Laurenti E, Cornils K, Glauche I, Perié L. A track of the clones: new developments in cellular barcoding. Exp Hematol 2018; 68:15-20. [DOI: 10.1016/j.exphem.2018.11.005] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2018] [Revised: 11/09/2018] [Accepted: 11/13/2018] [Indexed: 11/30/2022]
|
8
|
Florian MC, Klose M, Sacma M, Jablanovic J, Knudson L, Nattamai KJ, Marka G, Vollmer A, Soller K, Sakk V, Cabezas-Wallscheid N, Zheng Y, Mulaw MA, Glauche I, Geiger H. Aging alters the epigenetic asymmetry of HSC division. PLoS Biol 2018; 16:e2003389. [PMID: 30235201 PMCID: PMC6168157 DOI: 10.1371/journal.pbio.2003389] [Citation(s) in RCA: 86] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2017] [Revised: 10/02/2018] [Accepted: 08/23/2018] [Indexed: 01/01/2023] Open
Abstract
Hematopoietic stem cells (HSCs) balance self-renewal and differentiation to maintain homeostasis. With aging, the frequency of polar HSCs decreases. Cell polarity in HSCs is controlled by the activity of the small RhoGTPase cell division control protein 42 (Cdc42). Here we demonstrate—using a comprehensive set of paired daughter cell analyses that include single-cell 3D confocal imaging, single-cell transplants, single-cell RNA-seq, and single-cell transposase-accessible chromatin sequencing (ATAC-seq)—that the outcome of HSC divisions is strongly linked to the polarity status before mitosis, which is in turn determined by the level of the activity Cdc42 in stem cells. Aged apolar HSCs undergo preferentially self-renewing symmetric divisions, resulting in daughter stem cells with reduced regenerative capacity and lymphoid potential, while young polar HSCs undergo preferentially asymmetric divisions. Mathematical modeling in combination with experimental data implies a mechanistic role of the asymmetric sorting of Cdc42 in determining the potential of daughter cells via epigenetic mechanisms. Therefore, molecules that control HSC polarity might serve as modulators of the mode of stem cell division regulating the potential of daughter cells. Stem cells are unique cells that can differentiate to produce more stem cells or other types of cells and can divide both symmetrically (to produce daughter cells with the same fate) and asymmetrically (to produce one daughter cell that retains stem cell potential and one that differentiates). The mechanisms that control the outcome of stem cell divisions have been the focus of many studies; however, they remain mainly unknown. Here, we have analyzed these mechanisms in murine hematopoietic stem cells (HSCs) by directly comparing the epigenetic signature, the transcriptome, and the function of the two daughter cells stemming from the first division of either a young or an aged HSC. We observe that, while young HSCs divide mainly asymmetrically, aged HSCs divide primarily symmetrically. We find that the mode of division is tightly linked to stem cell polarity and is regulated by the activity level of the small RhoGTPase cell division control protein 42 (Cdc42). In addition, we show that the potential of daughter cells is further linked to the amount of the epigenetic mark H4K16ac and also to the amount of open chromatin allocated to a daughter cell, but it is not linked to its transcriptome. In summary, our study suggests that HSC polarity linked to Cdc42 activity drives the mode of division, while epigenetic mechanisms determine the functional outcome of the stem cell division.
Collapse
Affiliation(s)
- M. Carolina Florian
- Institute of Molecular Medicine and Stem Cell Aging, University of Ulm, Ulm, Germany
- * E-mail: (MCF); (HG)
| | - Markus Klose
- Institute for Medical Informatics and Biometry, Carl Gustav Carus Faculty of Medicine, Technische Universität Dresden, Dresden, Germany
| | - Mehmet Sacma
- Institute of Molecular Medicine and Stem Cell Aging, University of Ulm, Ulm, Germany
| | - Jelena Jablanovic
- Max Planck Institute (MPI) of Immunobiology and Epigenetics, Freiburg, Germany
| | - Luke Knudson
- Institute of Molecular Medicine and Stem Cell Aging, University of Ulm, Ulm, Germany
| | - Kalpana J. Nattamai
- Division of Experimental Hematology and Cancer Biology, Cincinnati Children's Hospital Medical Center, University of Cincinnati, Cincinnati, Ohio, United States of America
| | - Gina Marka
- Institute of Molecular Medicine and Stem Cell Aging, University of Ulm, Ulm, Germany
| | - Angelika Vollmer
- Institute of Molecular Medicine and Stem Cell Aging, University of Ulm, Ulm, Germany
| | - Karin Soller
- Institute of Molecular Medicine and Stem Cell Aging, University of Ulm, Ulm, Germany
| | - Vadim Sakk
- Institute of Molecular Medicine and Stem Cell Aging, University of Ulm, Ulm, Germany
| | | | - Yi Zheng
- Division of Experimental Hematology and Cancer Biology, Cincinnati Children's Hospital Medical Center, University of Cincinnati, Cincinnati, Ohio, United States of America
| | - Medhanie A. Mulaw
- Institute of Experimental Cancer Research, Medical Faculty, University of Ulm, Ulm, Germany
| | - Ingmar Glauche
- Institute for Medical Informatics and Biometry, Carl Gustav Carus Faculty of Medicine, Technische Universität Dresden, Dresden, Germany
| | - Hartmut Geiger
- Institute of Molecular Medicine and Stem Cell Aging, University of Ulm, Ulm, Germany
- Division of Experimental Hematology and Cancer Biology, Cincinnati Children's Hospital Medical Center, University of Cincinnati, Cincinnati, Ohio, United States of America
- * E-mail: (MCF); (HG)
| |
Collapse
|
9
|
Shepherd MS, Li J, Wilson NK, Oedekoven CA, Li J, Belmonte M, Fink J, Prick JCM, Pask DC, Hamilton TL, Loeffler D, Rao A, Schröder T, Göttgens B, Green AR, Kent DG. Single-cell approaches identify the molecular network driving malignant hematopoietic stem cell self-renewal. Blood 2018; 132:791-803. [PMID: 29991556 PMCID: PMC6107881 DOI: 10.1182/blood-2017-12-821066] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2017] [Accepted: 07/03/2018] [Indexed: 12/24/2022] Open
Abstract
Recent advances in single-cell technologies have permitted the investigation of heterogeneous cell populations at previously unattainable resolution. Here we apply such approaches to resolve the molecular mechanisms driving disease in mouse hematopoietic stem cells (HSCs), using JAK2V617F mutant myeloproliferative neoplasms (MPNs) as a model. Single-cell gene expression and functional assays identified a subset of JAK2V617F mutant HSCs that display defective self-renewal. This defect is rescued at the single HSC level by crossing JAK2V617F mice with mice lacking TET2, the most commonly comutated gene in patients with MPN. Single-cell gene expression profiling of JAK2V617F-mutant HSCs revealed a loss of specific regulator genes, some of which were restored to normal levels in single TET2/JAK2 mutant HSCs. Of these, Bmi1 and, to a lesser extent, Pbx1 and Meis1 overexpression in JAK2-mutant HSCs could drive a disease phenotype and retain durable stem cell self-renewal in functional assays. Together, these single-cell approaches refine the molecules involved in clonal expansion of MPNs and have broad implications for deconstructing the molecular network of normal and malignant stem cells.
Collapse
Affiliation(s)
- Mairi S Shepherd
- Wellcome MRC Cambridge Stem Cell Institute and
- Department of Haematology, University of Cambridge, United Kingdom
| | - Juan Li
- Wellcome MRC Cambridge Stem Cell Institute and
- Department of Haematology, University of Cambridge, United Kingdom
| | - Nicola K Wilson
- Wellcome MRC Cambridge Stem Cell Institute and
- Department of Haematology, University of Cambridge, United Kingdom
| | - Caroline A Oedekoven
- Wellcome MRC Cambridge Stem Cell Institute and
- Department of Haematology, University of Cambridge, United Kingdom
| | - Jiangbing Li
- Wellcome MRC Cambridge Stem Cell Institute and
- Department of Haematology, University of Cambridge, United Kingdom
| | - Miriam Belmonte
- Wellcome MRC Cambridge Stem Cell Institute and
- Department of Haematology, University of Cambridge, United Kingdom
| | - Juergen Fink
- Wellcome MRC Cambridge Stem Cell Institute and
- Department of Haematology, University of Cambridge, United Kingdom
| | - Janine C M Prick
- Wellcome MRC Cambridge Stem Cell Institute and
- Department of Haematology, University of Cambridge, United Kingdom
| | - Dean C Pask
- Wellcome MRC Cambridge Stem Cell Institute and
- Department of Haematology, University of Cambridge, United Kingdom
| | - Tina L Hamilton
- Wellcome MRC Cambridge Stem Cell Institute and
- Department of Haematology, University of Cambridge, United Kingdom
| | - Dirk Loeffler
- Department of Biosystems Science and Engineering, ETH Zurich, Basel, Switzerland; and
| | - Anjana Rao
- La Jolla Institute and Department of Pharmacology, University of California, San Diego, La Jolla, CA
| | - Timm Schröder
- Department of Biosystems Science and Engineering, ETH Zurich, Basel, Switzerland; and
| | - Berthold Göttgens
- Wellcome MRC Cambridge Stem Cell Institute and
- Department of Haematology, University of Cambridge, United Kingdom
| | - Anthony R Green
- Wellcome MRC Cambridge Stem Cell Institute and
- Department of Haematology, University of Cambridge, United Kingdom
- Department of Haematology, Addenbrooke's Hospital, Hills Road, Cambridge, United Kingdom
| | - David G Kent
- Wellcome MRC Cambridge Stem Cell Institute and
- Department of Haematology, University of Cambridge, United Kingdom
| |
Collapse
|
10
|
Palandri F, Catani L, Bonifacio M, Benevolo G, Heidel F, Palumbo GA, Crugnola M, Abruzzese E, Bartoletti D, Polverelli N, Bergamaschi M, Tiribelli M, Iurlo A, Breccia M, Cavazzini F, Tieghi A, Binotto G, Isidori A, Martino B, D'Adda M, Bosi C, Sabattini E, Vitolo U, Aversa F, Ibatici A, Lemoli RM, Sgherza N, Cuneo A, Martinelli G, Semenzato G, Cavo M, Vianelli N, Sapienza MR, Latagliata R. Ruxolitinib in elderly patients with myelofibrosis: impact of age and genotype. A multicentre study on 291 elderly patients. Br J Haematol 2018; 183:35-46. [PMID: 30010187 DOI: 10.1111/bjh.15497] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2018] [Accepted: 05/29/2018] [Indexed: 01/14/2023]
Abstract
Ruxolitinib is a JAK1/2 inhibitor that may control myelofibrosis (MF)-related splenomegaly and symptoms and can be prescribed regardless of age. While aging is known to correlate with worse prognosis, no specific analysis is available to confirm that ruxolitinib is suitable for use in older populations. A clinical database was created in 23 European Haematology Centres and retrospective data on 291 MF patients treated with ruxolitinib when aged ≥65 years were analysed in order to assess the impact of age and molecular genotype on responses, toxicities and survival. Additional mutations were evaluated by a next generation sequencing (NGS) approach in 69 patients with available peripheral blood samples at the start of ruxolitinib treatment. Compared to older (age 65-74 years) patients, elderly (≥75 years) showed comparable responses to ruxolitinib, but higher rates of drug-induced anaemia and thrombocytopenia and worse survival. Nonetheless, the ruxolitinib discontinuation rate was comparable in the two age groups. Number and types of molecular abnormalities were comparable across age groups. However, the presence of high molecular risk (HMR) mutations significantly affected survival, counterbalancing the effect of aging. Indeed, elderly patients with <2 HMR mutated genes had a comparable survival to older patients with ≥2 HMR mutations. Given that responses were not influenced by age, older age per se should not be a limitation for ruxolitinib administration. NGS analysis of HMR mutations also confirmed a strong predictive value in elderly patients.
Collapse
Affiliation(s)
- Francesca Palandri
- Institute of Haematology "L. and A. Seràgnoli", Sant'Orsola-Malpighi University Hospital, Bologna, Italy
| | - Lucia Catani
- Institute of Haematology "L. and A. Seràgnoli", Sant'Orsola-Malpighi University Hospital, Bologna, Italy
| | | | - Giulia Benevolo
- Division of Haematology, Città della Salute e della Scienza Hospital, Torino, Italy
| | - Florian Heidel
- Internal Medicine II, Haematology and Oncology, Friedrich-Schiller-University Medical Centre, Jena, Germany
| | - Giuseppe A Palumbo
- Division of Haematology, AOU "Policlinico-V. Emanuele", University of Catania, Catania, Italy
| | - Monica Crugnola
- Division of Haematology, Azienda Ospedaliero-Universitaria di Parma, Udine, Italy
| | | | - Daniela Bartoletti
- Institute of Haematology "L. and A. Seràgnoli", Sant'Orsola-Malpighi University Hospital, Bologna, Italy
| | - Nicola Polverelli
- Unit of Blood Diseases and Stem Cells Transplantation, Department of Clinical and Experimental Sciences, University of Brescia, ASST Spedali Civili of Brescia, Brescia, Italy
| | - Micaela Bergamaschi
- Clinic of Haematology, Department of Internal Medicine (DiMI), IRCCS AOU San Martino-IST, Genova, Italy
| | - Mario Tiribelli
- Division of Haematology and BMT, Azienda Sanitaria Universitaria Integrata di Udine, Udine, Italy
| | - Alessandra Iurlo
- Haematology Division, IRCCS Ca' Granda - Maggiore Policlinico Hospital Foundation, University of Milan, Milan, Italy
| | - Massimo Breccia
- Division of Cellular Biotechnologies and Haematology, University Sapienza, Roma, Italy
| | | | - Alessia Tieghi
- Division of Haematology, Azienda Ospedaliera-IRCSS Arcispedale Santa Maria Nuova, Reggio Emilia, Italy
| | - Gianni Binotto
- Unit of Haematology and Clinical Immunology, University of Padova, Padova, Italy
| | - Alessandro Isidori
- Haematology and Stem Cell Transplant Centre, AORMN Hospital, Pesaro, Italy
| | - Bruno Martino
- Division of Haematology, Azienda Ospedaliera 'Bianchi Melacrino Morelli', Reggio Calabria, Italy
| | - Mariella D'Adda
- Division of Haematology, ASST Spedali Civili di Brescia, Brescia, Italy
| | - Costanza Bosi
- Division of Haematology, Piacenza hospital, Piacenza, Italy
| | - Elena Sabattini
- Institute of Haematology "L. and A. Seràgnoli", Sant'Orsola-Malpighi University Hospital, Bologna, Italy
| | - Umberto Vitolo
- Division of Haematology, Città della Salute e della Scienza Hospital, Torino, Italy
| | - Franco Aversa
- Division of Haematology, Azienda Ospedaliero-Universitaria di Parma, Udine, Italy
| | - Adalberto Ibatici
- Division of Haematology and Bone Marrow Transplant, IRCCS San Martino-IST, Genova, Italy
| | - Roberto M Lemoli
- Clinic of Haematology, Department of Internal Medicine (DiMI), IRCCS AOU San Martino-IST, Genova, Italy
| | - Nicola Sgherza
- Division of Haematology, Casa Sollievo Sofferenza, San Giovanni Rotondo, Italy
| | - Antonio Cuneo
- Division of Haematology, University of Ferrara, Ferrara, Italy
| | - Giovanni Martinelli
- Institute of Haematology "L. and A. Seràgnoli", Sant'Orsola-Malpighi University Hospital, Bologna, Italy.,IRCCs-IRST della Romagna, Meldola, Forlì, Italy
| | - Giampietro Semenzato
- Unit of Haematology and Clinical Immunology, University of Padova, Padova, Italy
| | - Michele Cavo
- Institute of Haematology "L. and A. Seràgnoli", Sant'Orsola-Malpighi University Hospital, Bologna, Italy
| | - Nicola Vianelli
- Institute of Haematology "L. and A. Seràgnoli", Sant'Orsola-Malpighi University Hospital, Bologna, Italy
| | - Maria R Sapienza
- Institute of Haematology "L. and A. Seràgnoli", Sant'Orsola-Malpighi University Hospital, Bologna, Italy
| | - Roberto Latagliata
- Division of Cellular Biotechnologies and Haematology, University Sapienza, Roma, Italy
| |
Collapse
|
11
|
Rožman P. The potential of non-myeloablative heterochronous autologous hematopoietic stem cell transplantation for extending a healthy life span. GeroScience 2018; 40:221-242. [PMID: 29948868 PMCID: PMC6060192 DOI: 10.1007/s11357-018-0027-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2018] [Accepted: 06/03/2018] [Indexed: 12/11/2022] Open
Abstract
Aging is a complex multifactorial process, a prominent component being the senescence of the immune system. Consequently, immune-related diseases develop, including atherosclerosis, cancer, and life-threatening infections, which impact on health and longevity. Rejuvenating the aged immune system could mitigate these diseases, thereby contributing to longevity and health. Currently, an appealing option for rejuvenating the immune system is heterochronous autologous hematopoietic stem cell transplantation (haHSCT), where healthy autologous bone marrow/peripheral blood stem cells are collected during the youth of an individual, cryopreserved, and re-infused when he or she has reached an older age. After infusion, young hematopoietic stem cells can reconstitute the compromised immune system and improve immune function. Several studies using animal models have achieved substantial extension of the life span of animals treated with haHSCT. Therefore, haHSCT could be regarded as a potential procedure for preventing age-related immune defects and extending healthy longevity. In this review, the pros, cons, and future feasibility of this approach are discussed.
Collapse
Affiliation(s)
- Primož Rožman
- Blood Transfusion Centre of Slovenia, Šlajmerjeva 6, 1000, Ljubljana, Slovenia.
| |
Collapse
|
12
|
Migliaccio AR. A vicious interplay between genetic and environmental insults in the etiology of blood cancers. Exp Hematol 2017; 59:9-13. [PMID: 29248611 DOI: 10.1016/j.exphem.2017.12.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2017] [Revised: 12/06/2017] [Accepted: 12/07/2017] [Indexed: 02/06/2023]
Abstract
Over the years, the etiology of cancer has been attributed alternatively to genetic and environmental insults. According to the genetic hypothesis, cancer cells arise from the acquisition of mutations that dysregulate the intrinsic mechanisms controlling normal cell growth and survival. In contrast, the environmental hypothesis holds that cancer can be caused by multiple extrinsic challenges that alter normal tissue homeostasis, but may not necessarily involve mutations. It is, however, quite possible that these two mechanisms are not mutually exclusive. According to this third hypothesis, environmental challenges, by mechanisms still poorly understood, may act by imposing a selection pressure that confers a proliferative advantage on cells carrying specific driver mutations, leading to disease initiation. The authors of a brief report published in this journal (Exp Hematol. 2017;56:1-6) tested this third hypothesis experimentally and provide new evidence that chronic inflammation, by increasing tumor necrosis factor (TNF)-α, may positively select malignant hematopoietic stem cells (HSCs) carrying loss-of-function TET2 mutations that switch the TNF-α signaling responses to activate proliferation rather than inducing quiescence. Furthermore, these mutations skew hematopoietic differentiation toward the myelomonocytic lineage and the output of macrophages producing TNF-α constitutively, promoting further environment-independent expansion of the malignant HSCs. These findings support a model in which the formation of a malignant population is triggered by a vicious interplay between genetic (TET2 mutations) and environmental (inflammation) insults, suggesting the need for strategies that target both the malignant cells and their environment.
Collapse
Affiliation(s)
- Anna Rita Migliaccio
- Department of Biomedical and Neuromotorial Sciences, Alma Mater University, Bologna, Italy; Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai (ISMMS), New York, New York.
| |
Collapse
|