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Zimran E, Papa L, Djedaini M, Patel A, Iancu-Rubin C, Hoffman R. Expansion and preservation of the functional activity of adult hematopoietic stem cells cultured ex vivo with a histone deacetylase inhibitor. Stem Cells Transl Med 2020; 9:531-542. [PMID: 31950644 PMCID: PMC7103619 DOI: 10.1002/sctm.19-0199] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2019] [Accepted: 12/27/2019] [Indexed: 12/17/2022] Open
Abstract
Attempts to expand ex vivo the numbers of human hematopoietic stem cells (HSCs) without compromising their marrow repopulating capacity and their ability to establish multilineage hematopoiesis has been the subject of intense investigation. Although most such efforts have focused on cord blood HSCs, few have been applied to adult HSCs, a more clinically relevant HSC source for gene modification. To date, the strategies that have been used to expand adult HSCs have resulted in modest effects or HSCs with lineage bias and a limited ability to generate T cells in vivo. We previously reported that culturing umbilical cord blood CD34+ cells in serum‐free media supplemented with valproic acid (VPA), a histone deacetylase inhibitor, and a combination of cytokines led to the expansion of the numbers of fully functional HSCs. In the present study, we used this same approach to expand the numbers of adult human CD34+ cells isolated from mobilized peripheral blood and bone marrow. This approach resulted in a significant increase in the numbers of phenotypically defined HSCs (CD34+CD45RA‐CD90+D49f+). Cells incubated with VPA also exhibited increased aldehyde dehydrogenase activity and decreased mitochondrial membrane potential, each functional markers of HSCs. Grafts harvested from VPA‐treated cultures were able to engraft in immune‐deficient mice and, importantly, to generate cellular progeny belonging to each hematopoietic lineage in similar proportion to that observed with unmanipulated CD34+ cells. These data support the utility of VPA‐mediated ex vivo HSC expansion for gene modification of adult HSCs.
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Affiliation(s)
- Eran Zimran
- Division of Hematology and Oncology, Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY.,Hematology Department, Hadassah University Center, Jerusalem, Israel
| | - Luena Papa
- Division of Hematology and Oncology, Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY
| | - Mansour Djedaini
- Division of Hematology and Oncology, Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY
| | - Ami Patel
- Division of Hematology and Oncology, Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY
| | - Camelia Iancu-Rubin
- Division of Hematology and Oncology, Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY
| | - Ronald Hoffman
- Division of Hematology and Oncology, Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY
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2
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Vrecenak JD, Partridge EA, Pearson EG, Flake AW. Simple Approach to Increase Donor Hematopoietic Stem Cell Dose and Improve Engraftment in the Murine Model of Allogeneic In Utero Hematopoietic Cell Transplantation. Biol Blood Marrow Transplant 2019; 26:e21-e24. [PMID: 31493540 DOI: 10.1016/j.bbmt.2019.08.024] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2019] [Revised: 08/07/2019] [Accepted: 08/22/2019] [Indexed: 11/19/2022]
Abstract
The rationale for in utero hematopoietic cell transplantation (IUHCT) rests on exploitation of normal events during hematopoietic and immunologic ontogeny to allow allogeneic hematopoietic engraftment without myeloablative conditioning. Host hematopoietic competition is among the primary barriers to engraftment in IUHCT. In the murine model this can be partially overcome by delivery of larger donor cell doses, but volume is limiting. Enrichment of donor hematopoietic stem cells (HSCs) would seem to offer a more efficient approach, but such enriched populations have engrafted poorly in existing models of IUHCT. To increase HSC dose while maintaining the presence of accessory cells, we used a less stringent enrichment protocol of single-step lineage depleted cells alone (lin-) or in combination with whole donor bone marrow mononuclear cells. Our results confirm that increasing doses of HSCs in combination with bone marrow accessory cells can dramatically improve engraftment after IUHCT. This represents a practical and clinically applicable strategy to maximize the engraftment potential of the donor graft without risk of treatment-associated toxicity.
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Affiliation(s)
- Jesse D Vrecenak
- Division of Pediatric Surgery, Washington University, St. Louis, Missouri
| | - Emily A Partridge
- Center for Fetal Research, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania
| | - Erik G Pearson
- Center for Fetal Research, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania
| | - Alan W Flake
- Center for Fetal Research, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania.
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3
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Witt RG, Nguyen QHL, MacKenzie TC. In Utero Hematopoietic Cell Transplantation: Past Clinical Experience and Future Clinical Trials. CURRENT STEM CELL REPORTS 2018. [DOI: 10.1007/s40778-018-0119-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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4
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Bauer DE, Brendel C, Fitzhugh CD. Curative approaches for sickle cell disease: A review of allogeneic and autologous strategies. Blood Cells Mol Dis 2017; 67:155-168. [PMID: 28893518 DOI: 10.1016/j.bcmd.2017.08.014] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2016] [Accepted: 08/31/2017] [Indexed: 02/05/2023]
Abstract
Despite sickle cell disease (SCD) first being reported >100years ago and molecularly characterized >50years ago, patients continue to experience severe morbidity and early mortality. Although there have been substantial clinical advances with immunizations, penicillin prophylaxis, hydroxyurea treatment, and transfusion therapy, the only cure that can be offered is hematopoietic stem cell transplantation (HSCT). In this work, we summarize the various allogeneic curative approaches reported to date and discuss open and upcoming clinical research protocols. Then we consider gene therapy and gene editing strategies that may enable cure based on autologous HSCs.
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Affiliation(s)
- Daniel E Bauer
- Division of Hematology/Oncology, Boston Children's Hospital, Department of Pediatric Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA 02115, United States; Harvard Stem Cell Institute, Department of Pediatrics, Harvard Medical School, Boston, MA 02115, United States.
| | - Christian Brendel
- Gene Therapy Program, Dana-Farber/Boston Children's Cancer and Blood Disorders Center, Harvard Medical School, Boston, MA 02115, United States
| | - Courtney D Fitzhugh
- Sickle Cell Branch, National Heart, Lung, and Blood Institute, Bethesda, MD 20892, United States.
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5
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Almeida-Porada G, Atala A, Porada CD. In utero stem cell transplantation and gene therapy: rationale, history, and recent advances toward clinical application. MOLECULAR THERAPY-METHODS & CLINICAL DEVELOPMENT 2016; 5:16020. [PMID: 27069953 PMCID: PMC4813605 DOI: 10.1038/mtm.2016.20] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/17/2015] [Revised: 01/29/2016] [Accepted: 01/29/2016] [Indexed: 12/11/2022]
Abstract
Recent advances in high-throughput molecular testing have made it possible to diagnose most genetic disorders relatively early in gestation with minimal risk to the fetus. These advances should soon allow widespread prenatal screening for the majority of human genetic diseases, opening the door to the possibility of treatment/correction prior to birth. In addition to the obvious psychological and financial benefits of curing a disease in utero, and thereby enabling the birth of a healthy infant, there are multiple biological advantages unique to fetal development, which provide compelling rationale for performing potentially curative treatments, such as stem cell transplantation or gene therapy, prior to birth. Herein, we briefly review the fields of in utero transplantation (IUTx) and in utero gene therapy and discuss the biological hurdles that have thus far restricted success of IUTx to patients with immunodeficiencies. We then highlight several recent experimental breakthroughs in immunology, hematopoietic/marrow ontogeny, and in utero cell delivery, which have collectively provided means of overcoming these barriers, thus setting the stage for clinical application of these highly promising therapies in the near future.
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Affiliation(s)
- Graça Almeida-Porada
- Wake Forest Institute for Regenerative Medicine, Wake Forest School of Medicine , Winston Salem, North Carolina, USA
| | - Anthony Atala
- Wake Forest Institute for Regenerative Medicine, Wake Forest School of Medicine , Winston Salem, North Carolina, USA
| | - Christopher D Porada
- Wake Forest Institute for Regenerative Medicine, Wake Forest School of Medicine , Winston Salem, North Carolina, USA
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6
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Mizrahi K, Ash S, Peled T, Yaniv I, Stein J, Askenasy N. Negative selection by apoptosis enriches progenitors in naïve and expanded human umbilical cord blood grafts. Bone Marrow Transplant 2014; 49:942-9. [DOI: 10.1038/bmt.2014.79] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2013] [Revised: 01/27/2014] [Accepted: 02/06/2014] [Indexed: 01/16/2023]
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7
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Krinner A, Roeder I. Quantification and modeling of stem cell-niche interaction. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2014; 844:11-36. [PMID: 25480635 DOI: 10.1007/978-1-4939-2095-2_2] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Adult stem cells persist lifelong in the organism, where they are responsible for tissue homeostasis and repair. It is commonly assumed that their maintenance and function are facilitated in local environments called "stem cell niches." Although there is convincing evidence that a variety of niche components determine stem cell fate, the regulatory details of stem cell-niche interactions are widely unknown. To pave the way for a substantiated discussion of these interactions, we first focus on the stem cells themselves and describe the stem cell defining criteria and their implications. The fate of the cells that fulfill these criteria is regulated by a broad spectrum of factors and regulatory mechanisms. A summary of established components and their action is given exemplary for the hematopoietic system. The complexity resulting from the interplay of various cell types, signaling molecules, and extracellular structures can be boiled down to important key features as exemplified by the presented model of hematopoietic stem cell organization. Although neglecting many details, we show that this and similar models have the power to yield intriguing results as proven by the agreement of the presented model with experimental data and the predictions derived from model simulations. Finally, we will discuss the paradigm of systems biology and give a summary of the techniques that promise to unveil further details of the organization principles of stem cell niches at different levels. The synergistic effect of the described techniques together with the integration of their results into a unified model that allows quantitative evaluation and predictions may lead to a better and more systematic understanding of the most relevant niche elements and their interactions.
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Affiliation(s)
- Axel Krinner
- Faculty of Medicine Carl Gustav Carus, TU Dresden, Institute for Medical Informatics and Biometry, Fetscherstr. 74, D-01307, Dresden, Germany,
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8
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Peytour Y, Villacreces A, Chevaleyre J, Ivanovic Z, Praloran V. Discarded leukoreduction filters: A new source of stem cells for research, cell engineering and therapy? Stem Cell Res 2013; 11:736-42. [DOI: 10.1016/j.scr.2013.05.001] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/28/2012] [Revised: 04/11/2013] [Accepted: 05/04/2013] [Indexed: 11/25/2022] Open
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9
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Asselin-Labat ML, Filby CE. Adult lung stem cells and their contribution to lung tumourigenesis. Open Biol 2013; 2:120094. [PMID: 22977734 PMCID: PMC3438537 DOI: 10.1098/rsob.120094] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2012] [Accepted: 07/23/2012] [Indexed: 12/14/2022] Open
Abstract
The isolation and characterization of lung stem and progenitor cells represent an important step towards the understanding of lung repair after injury, lung disease pathogenesis and the identification of the target cells of transformation in lung carcinogenesis. Different approaches using prospective isolation of progenitor cells by flow cytometry or lineage-tracing experiments in mouse models of lung injury have led to the identification of distinct progenitor subpopulations in different morphological regions of the adult lung. Genetically defined mouse models of lung cancer are offering new perspectives on the cells of origin of different subtypes of lung cancer. These mouse models pave the way to further investigate human lung progenitor cells at the origin of lung cancers, as well as to define the nature of the lung cancer stem cells. It will be critical to establish the link between oncogenic driver mutations recently discovered in lung cancers, target cells of transformation and subtypes of lung cancers to enable better stratification of patients for improved therapeutic strategies.
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Affiliation(s)
- Marie-Liesse Asselin-Labat
- ACRF Stem Cells and Cancer Division, The Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria, Australia.
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10
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Van Besien K, Liu H, Jain N, Stock W, Artz A. Umbilical cord blood transplantation supported by third-party donor cells: rationale, results, and applications. Biol Blood Marrow Transplant 2013; 19:682-91. [PMID: 23142329 PMCID: PMC3618995 DOI: 10.1016/j.bbmt.2012.11.001] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2012] [Accepted: 11/02/2012] [Indexed: 10/27/2022]
Abstract
Low incidence of graft-versus-host disease provides the major rational for pursuing umbilical cord blood (UCB) stem cell transplantation (SCT). Considerable evidence also suggests a lower rate of recurrence after UCB SCT than after transplantation from adult donors. Recent advances in understanding of the human fetal immune development provide a rational underpinning for these clinical outcomes. The fetal immune system is geared toward maintaining tolerance to foreign antigens, particularly to the maternal antigens to which it is exposed throughout gestation. To this purpose it is dominated by a unique population of peripheral T regulatory cells that actively maintain tolerance. This and other features of the UCB lymphoid system explains the low incidence of graft-versus-host disease and superior outcomes of UCB SCT with noninherited maternal antigen-matched grafts. At the same time, highly sensitized maternal microchimeric cells are frequently detected in UCB and likely contribute to superior graft-versus-leukemia effects and low rates of disease recurrence in inherited paternal antigen-matched UCB recipients. However, historically erratic and slow hematopoietic recovery after UCB SCT leads to increased early morbidity and mortality, excessive hospitalization, and increased costs. This has held up the widespread utilization of UCB SCT in adults. Here we summarize recent data on UCB SCT with an emphasis on studies of co-infusion of adult CD34 selected hematopoietic stem cells with UCB SCT. This procedure, through transient engraftment of adult hematopoietic stem cells, largely overcomes the problem of delayed engraftment. It also results in predictable engraftment of a UCB with the desired characteristics. We also briefly discuss unresolved issues and possible future applications of this technology.
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11
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Vrecenak JD, Flake AW. In utero hematopoietic cell transplantation--recent progress and the potential for clinical application. Cytotherapy 2013; 15:525-35. [PMID: 23415921 DOI: 10.1016/j.jcyt.2013.01.003] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2012] [Accepted: 01/08/2013] [Indexed: 11/27/2022]
Abstract
In utero hematopoietic stem cell transplantation (IUHCT) is a potential therapeutic alternative to postnatal hematopoietic stem cell transplantation (HSCT) for congenital hematologic disorders that can be diagnosed early in gestation and can be cured by HSCT. The rationale is to take advantage of normal events during hematopoietic and immunologic ontogeny to facilitate allogeneic hematopoietic engraftment. Although the rationale remains compelling, IUHCT has not yet achieved its clinical potential. This review will discuss recent experimental progress toward overcoming the barriers to allogeneic engraftment and new therapeutic strategies that may hasten clinical application.
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Affiliation(s)
- Jesse D Vrecenak
- Children's Center for Fetal Research, Children's Hospital of Philadelphia, and Department of Surgery, University of Pennsylvania, School of Medicine, Philadelphia, PA, USA
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12
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Biswas CS, Sauter CT, Bailey CP, Rittenberg D, Luo X, Panis MM, Budak-Alpdogan T, Grosso D, Flomenberg N, Alpdogan O. Double Haploidentical Hematopoietic Stem Cell Transplantation Results in Successful Engraftment of Bone Marrow from Both Donors without Graft-versus-Host or Graft-versus-Graft Effects. Biol Blood Marrow Transplant 2012; 18:1808-18. [DOI: 10.1016/j.bbmt.2012.09.012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2012] [Accepted: 09/20/2012] [Indexed: 10/27/2022]
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13
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Peled T, Shoham H, Aschengrau D, Yackoubov D, Frei G, Rosenheimer G N, Lerrer B, Cohen HY, Nagler A, Fibach E, Peled A. Nicotinamide, a SIRT1 inhibitor, inhibits differentiation and facilitates expansion of hematopoietic progenitor cells with enhanced bone marrow homing and engraftment. Exp Hematol 2011; 40:342-55.e1. [PMID: 22198152 DOI: 10.1016/j.exphem.2011.12.005] [Citation(s) in RCA: 127] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2011] [Revised: 12/05/2011] [Accepted: 12/11/2011] [Indexed: 01/06/2023]
Abstract
Strategies that increase homing to the bone marrow and engraftment efficacy of ex vivo expended CD34(+) cells are expected to enhance their clinical utility. Here we report that nicotinamide (NAM), a form of vitamin B-3, delayed differentiation and increased engraftment efficacy of cord blood-derived human CD34(+) cells cultured with cytokines. In the presence of NAM, the fraction of CD34(+)CD38(-) cells increased and the fraction of differentiated cells (CD14(+), CD11b(+), and CD11c(+)) decreased. CD34(+) cells cultured with NAM displayed increased migration toward stromal cell derived factor-1 and homed to the bone marrow with higher efficacy, thus contributing to their increased engraftment efficacy, which was maintained in competitive transplants with noncultured competitor cells. NAM is a known potent inhibitor of several classes of ribosylase enzymes that require NAD for their activity, as well as sirtuin (SIRT1), class III NAD(+)-dependent-histone-deacetylase. We demonstrated that EX-527, a specific inhibitor of SIRT1 catalytic activity, inhibited differentiation of CD34(+) cells similar to NAM, while specific inhibitors of NAD-ribosylase enzymes did not inhibit differentiation, suggesting that the NAM effect is SIRT1-specific. Our findings suggest a critical function of SIRT1 in the regulation of hematopoietic stem cell activity and imply the clinical utility of NAM for ex vivo expansion of functional CD34(+) cells.
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14
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Doan PL, Chute JP. The vascular niche: home for normal and malignant hematopoietic stem cells. Leukemia 2011; 26:54-62. [PMID: 21886170 DOI: 10.1038/leu.2011.236] [Citation(s) in RCA: 99] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Hematopoietic stem cells (HSCs) are uniquely capable of self-renewal and provision of all of the mature elements of the blood and immune system throughout the lifetime of an individual. HSC self-renewal is regulated by both intrinsic mechanisms and extrinsic signals mediated via specialized microenvironments or 'niches' wherein HSCs reside. HSCs have been shown to reside in close association with bone marrow (BM) osteoblasts in the endosteal niche and also in proximity to BM sinusoidal vessels. An unresolved question surrounds whether the endosteal and vascular niches provide synchronous or redundant regulation of HSC fate or whether these niches provide wholly unique regulatory functions. Furthermore, while some aspects of the mechanisms through which osteoblasts regulate HSC fate have been defined, the mechanisms through which the vascular niche regulates HSC fate remain obscure. Here, we summarize the anatomic and functional basis supporting the concept of an HSC vascular niche as well as the precise function of endothelial cells, perivascular cells and stromal cells within the niche in regulating HSC fate. Lastly, we will highlight the role of the vascular niche in regulating leukemic stem cell fate in vivo.
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Affiliation(s)
- P L Doan
- Division of Cellular Therapy, Department of Medicine, Duke University, Durham, NC 27710, USA
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15
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Kita K, Lee JO, Finnerty CC, Herndon DN. Cord blood-derived hematopoietic stem/progenitor cells: current challenges in engraftment, infection, and ex vivo expansion. Stem Cells Int 2011; 2011:276193. [PMID: 21603139 PMCID: PMC3096303 DOI: 10.4061/2011/276193] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2010] [Revised: 02/07/2011] [Accepted: 02/25/2011] [Indexed: 11/20/2022] Open
Abstract
Umbilical cord blood has served as an alternative to bone marrow for hematopoietic transplantation since the late 1980s. Numerous clinical studies have proven the efficacy of umbilical cord blood. Moreover, the possible immaturity of cells in umbilical cord blood gives more options to recipients with HLA mismatch and allows for the use of umbilical cord blood from unrelated donors. However, morbidity and mortality rates associated with hematopoietic malignancies still remain relatively high, even after cord blood transplantation. Infections and relapse are the major causes of death after cord blood transplantation in patients with hematopoietic diseases. Recently, new strategies have been introduced to improve these major problems. Establishing better protocols for simple isolation of primitive cells and ex vivo expansion will also be very important. In this short review, we discuss several recent promising findings related to the technical improvement of cord blood transplantation.
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Affiliation(s)
- Katsuhiro Kita
- Department of Surgery, Shriners Hospitals for Children, University of Texas Medical Branch, 815 Market Street, Galveston, TX 77550, USA
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16
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Delaney C, Ratajczak MZ, Laughlin MJ. Strategies to enhance umbilical cord blood stem cell engraftment in adult patients. Expert Rev Hematol 2011; 3:273-83. [PMID: 20835351 DOI: 10.1586/ehm.10.24] [Citation(s) in RCA: 67] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Umbilical cord blood (UCB) has been used successfully as a source of hematopoietic stem cells (HSCs) for allogeneic transplantation in children and adults in the treatment of hematologic diseases. However, compared with marrow or mobilized peripheral blood stem cell grafts from adult donors, significant delays in the rates and kinetics of neutrophil and platelet engraftment are noted after UCB transplant. These differences relate in part to the reduced numbers of HSCs in UCB grafts. To improve the rates and kinetics of engraftment of UCB HSC, several strategies have been proposed, including ex vivo expansion of UCB HSCs, addition of third-party mesenchymal cells, intrabone delivery of HSCs, modulation of CD26 expression, and infusion of two UCB grafts. This article will focus on ex vivo expansion of UCB HSCs and strategies to enhance UCB homing as potential solutions to overcome the problem of low stem cell numbers in a UCB graft.
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Affiliation(s)
- Colleen Delaney
- Fred Hutchinson Cancer Research Center, Mailstop D2-100, 1100 Fairview Ave N, PO Box, 9024, Seattle, WA 98109, USA
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17
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Kennedy DR, McLellan K, Moore PF, Henthorn PS, Felsburg PJ. Effect of ex vivo culture of CD34+ bone marrow cells on immune reconstitution of XSCID dogs following allogeneic bone marrow transplantation. Biol Blood Marrow Transplant 2009; 15:662-70. [PMID: 19450750 DOI: 10.1016/j.bbmt.2009.03.014] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2008] [Accepted: 03/10/2009] [Indexed: 01/01/2023]
Abstract
Successful genetic treatment of most primary immunodeficiencies or hematological disorders will require the transduction of pluripotent, self-renewing hematopoietic stem cells (HSC) rather than their progeny to achieve enduring production of genetically corrected cells and durable immune reconstitution. Current ex vivo transduction protocols require manipulation of HSC by culture in cytokines for various lengths of time depending upon the retroviral vector that may force HSC to enter pathways of proliferation, and possibly differentiation, which could limit their engraftment potential, pluripotentiality and long-term repopulating capacity. We have compared the ability of normal CD34(+) cells cultured in a standard cytokine cocktail for 18hours or 4.5 days to reconstitute XSCID dogs following bone marrow transplantation in the absence of any pretransplant conditioning with that of freshly isolated CD34(+) cells. CD34(+) cells cultured under standard gamma-retroviral transduction conditions (4.5 days) showed decreased engraftment potential and ability to sustain long-term thymopoiesis. In contrast, XSCID dogs transplanted with CD34(+) cells cultured for 18hours showed a robust T cell immune reconstitution similar to dogs transplanted with freshly isolated CD34(+) cells, however, the ability to sustain long-term thymopoiesis was impaired. These results emphasize the need to determine ex vivo culture conditions that maintain both the engraftment potential and "stem cell" potential of the cultured cells.
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Affiliation(s)
- Douglas R Kennedy
- Department of Clinical Studies, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
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18
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In Utero Hematopoietic Stem Cell Transplantation: Progress toward Clinical Application. Biol Blood Marrow Transplant 2008; 14:729-40. [DOI: 10.1016/j.bbmt.2008.02.012] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2008] [Accepted: 02/15/2008] [Indexed: 11/22/2022]
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19
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Transplantation of human hematopoietic repopulating cells: mechanisms of regeneration and differentiation using human???mouse xenografts. Curr Opin Organ Transplant 2008; 13:44-52. [DOI: 10.1097/mot.0b013e3282f42486] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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20
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van de Ven C, Collins D, Bradley MB, Morris E, Cairo MS. The potential of umbilical cord blood multipotent stem cells for nonhematopoietic tissue and cell regeneration. Exp Hematol 2007; 35:1753-65. [PMID: 17949892 DOI: 10.1016/j.exphem.2007.08.017] [Citation(s) in RCA: 90] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2007] [Revised: 08/08/2007] [Accepted: 08/13/2007] [Indexed: 12/19/2022]
Abstract
Stem cells have been isolated from human embryos, fetal tissue, umbilical cord blood (UCB), and also from "adult" sources. Adult stem cells are found in many tissues of the body and are capable of maintaining, generating, and replacing terminally differentiated cells. A source of pluripotent stem cells has been recently identified in UCB that can also differentiate across tissue lineage boundaries into neural, cardiac, epithelial, hepatocytic, and dermal tissue. Thus, UCB may provide a future source of stem cells for tissue repair and regeneration. Its widespread availability makes UCB an attractive source for tissue regeneration. UCB-derived stem cells offer multiple advantages over adult stem cells, including their immaturity, which may play a significant role in reduced rejection after transplantation into a mismatched host and their ability to produce larger quantities of homogenous tissue or cells. While research with embryonic stem cells continues to generate considerable controversy, human umbilical stem cells provide an alternative cell source that has been more ethically acceptable and appears to have widespread public support. This review will summarize the in vitro and in vivo studies examining UCB stem cells and their potential use for therapeutic application for nonhematopoietic tissue and cell regeneration.
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Affiliation(s)
- Carmella van de Ven
- Department of Pediatrics, Columbia University and Morgan Stanley Children's Hospital New York-Presbyterian, New York, NY 10032, USA
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21
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Tatekawa T, Ogawa H, Kawakami M, Oka Y, Yasukawa K, Sugiyama H, Kawase I, Soma T. A novel direct competitive repopulation assay for human hematopoietic stem cells using NOD/SCID mice. Cytotherapy 2007; 8:390-8. [PMID: 16923615 DOI: 10.1080/14653240600847191] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
BACKGROUND The major problem in cord blood (CB) transplantation for adult patients is shortage of stem cell number. To overcome this disadvantage, several studies on ex vivo expansion have been performed. However, such efforts are always troubled by the lack of a reliable and simple assay system for stem cells. Our aim was to establish an in vivo assay system to compare the directly repopulating ability of two populations of human hematopoietic stem cells using a xenogeneic transplant system. METHODS Thirty CB samples from infants of each sex were pooled and enriched for CD34(+) progenitor cells. Enriched CD34(+) cells were transplanted into irradiated NOD/SCID mice at different male to female ratios, and human hematopoietic cells recovered 7 weeks after transplantation were analyzed by a quantitative DNA sex test using competitive PCR for the amelogenin gene. Using this assay system, ex vivo cultured and non-cultured CB cells were compared for repopulating ability. RESULTS The sex ratio of human CB cells transplanted was found to be maintained for 7 weeks in matured and progenitor cells. The competitive repopulation assay of cultured and non-cultured CB cells showed a marked defect in the repopulating ability of cultured cells, although the LTCIC count was maintained during cultivation. DISCUSSION Our assay system is a simple and reliable quantitative method that permits direct comparison of two stem cell compartments. The assay system will be useful for the assessment of the functional abilities of various human hematopoietic stem cells.
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Affiliation(s)
- T Tatekawa
- Department of Molecular Medicine, Osaka University Graduate School of Medicine, Osaka, Japan
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Abstract
Stem cells are capable of self-renewal, differentiation into various lineages, and proliferation; thus, they play critical roles in the functioning and maintenance of many biological systems. However, these unique qualities of stem cells also make them more vulnerable to mutations as the organism ages. The biggest risk factor in cancer development is age, and most scientists believe that cancers partly result from a buildup of mutations in different cell types over time. This accumulation of mutations takes place over the course of a person's lifetime, during which repeated rounds of cell division result in editing errors in the DNA. Genetic alterations can cause changes in the signaling pathways controlling proliferation, differentiation, and apoptosis. In the case of stem cells, such mutations would be passed on to all of the stem cell's progeny, ultimately resulting in a pool of stem cells that feeds neoplastic formation. Studies aiming to identify and characterize these putative cancer stem cells and to understand how they arise will shed light on the process of stem cell aging and its role in cancer.
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Affiliation(s)
- Jennifer Fuller
- Immunology Program at the University of Michigan, Ann Arbor, MI 48109, USA.
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Araki H, Mahmud N, Milhem M, Nunez R, Xu M, Beam CA, Hoffman R. Expansion of human umbilical cord blood SCID-repopulating cells using chromatin-modifying agents. Exp Hematol 2006; 34:140-9. [PMID: 16459182 DOI: 10.1016/j.exphem.2005.10.002] [Citation(s) in RCA: 82] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2005] [Revised: 10/13/2005] [Accepted: 10/13/2005] [Indexed: 11/29/2022]
Abstract
OBJECTIVE We investigated whether the addition of two chromatin-modifying agents, 5-aza-2'-deoxycytidine (5azaD) and trichostatin A (TSA), to cord blood (CB) CD34(+) cells in culture results in expansion of the numbers of severe combined immunodeficient (SCID) repopulating cells (SRC). MATERIALS AND METHODS Human CB CD34(+) cells were cultured with cytokines in the presence or absence of 5azaD/TSA. After 9 days of culture, the fold expansion of CD34(+) and CD34(+)CD90(+) cell numbers, colony-forming unit (CFU)-mix, cobblestone area-forming cell (CAFC), and SRC numbers were determined. RESULTS A 12.5-fold expansion of CD34(+)CD90(+) cells was observed in the 5azaD/TSA-treated cultures in comparison to the input cell numbers. Expansion of CD34(+)CD90(+) cells was associated with a 9.8-fold increase in the numbers of CFU-mix and 11.5-fold increase in CAFC. 5azaD/TSA treatment of the CB CD34(+) cells resulted in a 9.6-fold expansion of the absolute number of SRC following 9 days of culture as determined by limiting dilution analysis. Expansion of cells maintaining CD34(+)CD90(+) phenotype was not due to the retention of a quiescent population of cells because all of the CD34(+)CD90(+) cells in the culture had undergone cellular division. 5azaD/TSA-treated CD34(+)CD90(+) cells, but not CD34(+)CD90(-) cells were responsible for in vivo hematopoietic repopulation potential of nonobese diabetic/SCID mice. CONCLUSION Ex vivo expansion strategy using chromatin-modifying agents provides a potential avenue by which to expand the number of hematopoietic stem cells (HSC) with a single CB unit for use as an alternative source of HSC grafts for adult recipients.
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Affiliation(s)
- Hiroto Araki
- Section of Hematology/Oncology, Department of Medicine, University of Illinois at Chicago, 60607, USA
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24
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Ting-De Ravin SS, Kennedy DR, Naumann N, Kennedy JS, Choi U, Hartnett BJ, Linton GF, Whiting-Theobald NL, Moore PF, Vernau W, Malech HL, Felsburg PJ. Correction of canine X-linked severe combined immunodeficiency by in vivo retroviral gene therapy. Blood 2005; 107:3091-7. [PMID: 16384923 PMCID: PMC1895747 DOI: 10.1182/blood-2005-10-4057] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
X-linked severe combined immunodeficiency (XSCID) is characterized by profound immunodeficiency and early mortality, the only potential cure being hematopoietic stem cell (HSC) transplantation or gene therapy. Current clinical gene therapy protocols targeting HSCs are based upon ex vivo gene transfer, potentially limited by the adequacy of HSC harvest, transduction efficiencies of repopulating HSCs, and the potential loss of their engraftment potential during ex vivo culture. We demonstrate an important proof of principle by showing achievement of durable immune reconstitution in XSCID dogs following intravenous injection of concentrated RD114-pseudotyped retrovirus vector encoding the corrective gene, the interleukin-2 receptor gamma chain (gamma c). In 3 of 4 dogs treated, normalization of numbers and function of T cells were observed. Two long-term-surviving animals (16 and 18 months) showed significant marking of B lymphocytes and myeloid cells, normalization of IgG levels, and protective humoral immune response to immunization. There were no adverse effects from in vivo gene therapy, and in one dog that reached sexual maturity, sparing of gonadal tissue from gene transfer was demonstrated. This is the first demonstration that in vivo gene therapy targeting HSCs can restore both cellular and humoral immunity in a large-animal model of a fatal immunodeficiency.
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Affiliation(s)
- Suk See Ting-De Ravin
- Laboratory of Host Defenses, NIAID, NIH, Building 10-CRC, Room 5-3750, 10 Center Drive, Bethesda, MD 20892-1456, USA.
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25
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Ramírez M, Regidor C, Marugán I, García-Conde J, Bueren JA, Fernández MN. Engraftment kinetics of human CD34+ cells from cord blood and mobilized peripheral blood co-transplanted into NOD/SCID mice. Bone Marrow Transplant 2005; 35:271-5. [PMID: 15558038 DOI: 10.1038/sj.bmt.1704765] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
We have reported short periods of post transplant neutropenia in human patients co-transplanted with cord blood (CB) and low numbers of haploidentical mobilized peripheral blood (MPB) CD34+ cells. To investigate the effect that the proportion of MPB to CB cells may have on engraftment kinetics, we have co-transplanted fixed numbers of human CB CD34+ cells mixed with different numbers of MPB CD34+ cells into NOD/SCID mice. We periodically quantified the proportion of human cells and the relative contribution of MPB and CB cells to the human engraftment on marrow aspirates. At the lowest MPB/CB ratios (5 : 1, 10 : 1), the contribution of CB cells predominated at all time points analyzed, and in three out of four experiments MPB cell contributions progressively decreased from day +15. At higher MPB/CB ratios, MPB cells had a more important contribution to both early and late engraftment, with the highest cell ratio resulting in only marginal CB cell engraftment. Therefore, our results showed greater potential, on a per cell basis, of human CB vs MPB cells for competitive sustained engraftment in the xenogeneic model used, which was only abrogated by the co-infusion of very high numbers of MPB cells.
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Affiliation(s)
- M Ramírez
- Unidad de Hematopoyesis, CIEMAT, Hospital Puerta de Hierro, Universidad Autónoma de Madrid, Madrid, Spain
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26
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Ficara F, Superchi DB, Hernández RJ, Mocchetti C, Carballido-Perrig N, Andolfi G, Deola S, Colombo A, Bordignon C, Carballido JM, Roncarolo MG, Aiuti A. IL-3 or IL-7 increases ex vivo gene transfer efficiency in ADA-SCID BM CD34+ cells while maintaining in vivo lymphoid potential. Mol Ther 2005; 10:1096-108. [PMID: 15564141 DOI: 10.1016/j.ymthe.2004.08.014] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2004] [Accepted: 08/19/2004] [Indexed: 11/18/2022] Open
Abstract
To improve maintenance and gene transfer of human lymphoid progenitors for clinical use in gene therapy of adenosine deaminase (ADA)-deficient SCID we investigated several gene transfer protocols using various stem cell-enriched sources. The lymphoid differentiation potential was measured by an in vitro clonal assay for B/NK cells and in the in vivo SCID-hu mouse model. Ex vivo culture with the cytokines TPO, FLT3-ligand, and SCF (T/F/S) plus IL-3 or IL-7 substantially increased the yield of transduced bone marrow (BM) CD34(+) cells purified from ADA-SCID patients or healthy donors, compared to T/F/S alone. Moreover, the use of IL-3 or IL-7 significantly improved the maintenance of in vitro B cell progenitors from ADA-SCID BM cells and allowed the efficient transduction of B and NK cell progenitors. Under these optimized conditions transduced CD34(+) cells were efficiently engrafted into SCID-hu mice and gave rise to B and T cell progeny, demonstrating the maintenance of in vivo lymphoid reconstitution capacity. The protocol based on the T/F/S + IL-3 combination was included in a gene therapy clinical trial for ADA-SCID, resulting in long-term engraftment of stem/progenitor cells. Remarkably, gene-corrected BM CD34(+) cells obtained from one patient 4 and 11 months after gene therapy were capable of repopulating the lymphoid compartment of SCID-hu hosts.
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Affiliation(s)
- Francesca Ficara
- San Raffaele Telethon Institute for Gene Therapy, 20132 Milan, Italy
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27
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Yuan R, Astle CM, Chen J, Harrison DE. Genetic regulation of hematopoietic stem cell exhaustion during development and growth. Exp Hematol 2005; 33:243-50. [PMID: 15676219 DOI: 10.1016/j.exphem.2004.10.014] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2004] [Accepted: 10/21/2004] [Indexed: 11/16/2022]
Abstract
OBJECTIVE During aging, hematopoietic stem cell (HSC) exhaustion is more severe in BALB/cByJ (BALB) mice than in C57BL/6J (B6) mice. Our objective is to determine whether HSC exhaustion during development from fetus to adult also is more severe for BALB than for B6 mice. MATERIALS AND METHODS Hematopoietic stem cells from fetal liver cells (FLCs) and from young adult bone marrow cells (BMCs) were compared using the competitive repopulation assay to measure long-term repopulating ability (LTRA) and HSC expansion after serial transplantation. LTRAs were measured in repopulating units (RU), as the ability to produce donor-type erythrocytes and lymphocytes in lethally irradiated recipients relative to the congenic fresh marrow competitor. To test expansion, FLCs or BMCs were serially transplanted into lethally irradiated carriers whose marrow cells were compared using fluorescence-activated cell staining (FACS), and subsequently tested for LTRA. RESULTS BALB and B6 FLCs, respectively, repopulated 2.6 and 13.5 times as well as BMCs. LTRAs correlated with HSC expansion for BALB, but not B6. Per million donor cells, CD34(-) HSC-enriched fractions (HEFs) and total RU values were 6.8 and 4.6 times higher for FLCs than for BMCs in BALB carriers, while these ratios were only 1.2 and 0.97 higher in B6 carriers. CONCLUSION In B6 HSC development, LTRA is dissociated from expansion. Although 1 x 10(6) BMCs have much lower LTRA, they expand HSCs as well as 1 x 10(6) FLCs. HSC expansion is partly exhausted in BALB, but not B6, during development.
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Affiliation(s)
- Rong Yuan
- The Jackson Laboratory, Bar Harbor, ME, USA
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28
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Körbling M, Robinson S, Estrov Z, Champlin R, Shpall E. Umbilical cord blood-derived cells for tissue repair. Cytotherapy 2005; 7:258-61. [PMID: 16081352 DOI: 10.1080/14653240510027145] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Hematopoietic tissue-derived cells, including stem cells, have been shown to generate solid organ tissue-specific cells. Besides bone marrow and peripheral blood, umbilical cord blood (UCB) has the advantage of being an easily accessible stem cell source provided as a banked cell product. Using the xenogeneic human into NOD/SCID mouse stem cell transplant model preliminary data suggest UCB-derived tissue-specific cells generated in liver, pancreas, CNS and endothelium. In a clinical sex-mismatched UCB transplant setting Y-positive, UCB-derived gastrointestinal epithelial cells and CNS-specific cells have been identified in female patients. The potential therapeutic use of UCB cells for tissue repair is, however, limited by a low total stem cell number available and by HLA-disparity.
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Affiliation(s)
- M Körbling
- Department of Blood and Marrow Transplantation, University of Texas MD Anderson Cancer Center, Houston, Texas 77030, USA
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29
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Suter SE, Gouthro TA, McSweeney PA, Nash RA, Haskins ME, Felsburg PJ, Henthorn PS. Isolation and characterization of pediatric canine bone marrow CD34+ cells. Vet Immunol Immunopathol 2004; 101:31-47. [PMID: 15261691 DOI: 10.1016/j.vetimm.2004.03.009] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2003] [Revised: 02/05/2004] [Accepted: 03/22/2004] [Indexed: 10/26/2022]
Abstract
Historically, the dog has been a valuable model for bone marrow transplantation studies, with many of the advances achieved in the dog being directly transferable to human clinical bone marrow transplantation protocols. In addition, dogs are also a source of many well-characterized homologues of human genetic diseases, making them an ideal large animal model in which to evaluate gene therapy protocols. It is generally accepted that progenitor cells for many human hematopoietic cell lineages reside in the CD34+ fraction of cells from bone marrow, cord blood, or peripheral blood. In addition, CD34+ cells are the current targets for human gene therapy of diseases involving the hematopoietic system. In this study, we have isolated and characterized highly enriched populations of canine CD34+ cells isolated from dogs 1 week to 3 months of age. Bone marrow isolated from 2- to 3-week-old dogs contained up to 18% CD34+ cells and this high percentage dropped sharply with age. In in vitro 6-day liquid suspension cultures, CD34+ cells harvested from 3-week-old dogs expanded almost two times more than those from 3-month-old dogs and the cells from younger dogs were also more responsive to human Flt-3 ligand (Flt3L). In culture, the percent and number of CD34+ cells from both ages of dogs dropped sharply between 2 and 4 days, although the number of CD34+ cells at day 6 of culture was higher for cells harvested from the younger dogs. CD34+ cells harvested from both ages of dogs had similar enrichment and depletion values in CFU-GM methylcellulose assays. Canine CD34+/Rho123lo cells expressed c-kit mRNA while the CD34+/Rhohi cells did not. When transplanted to a sub-lethally irradiated recipient, CD34+ cells from 1- to 3-week-old dogs gave rise to both myeloid and lymphoid lineages in the periphery. This study demonstrates that canine CD34+ bone marrow cells have similar in vitro and in vivo characteristics as human CD34+ cells. In addition, ontogeny-related functional differences reported for human CD34+ cells appear to exist in the dog as well, suggesting pediatric CD34+ cells may be better targets for gene transfer than adult bone marrow. The demonstration of similarities between canine and human CD34+ cells enhances the dog as a large, preclinical model to evaluate strategies for improving bone marrow transplantation protocols, for gene therapy protocols that target CD34+ cells, and to study the engraftment potential of various cell populations that may contain hematopoietic progenitor cell activity.
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Affiliation(s)
- Steven E Suter
- Section of Medical Genetics, Department of Clinical Studies, University of Pennsylvania School of Veterinary Medicine, 3900 Delancey St., Philadelphia 19104, USA
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30
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Devine SM, Lazarus HM, Emerson SG. Clinical application of hematopoietic progenitor cell expansion: current status and future prospects. Bone Marrow Transplant 2003; 31:241-52. [PMID: 12621458 DOI: 10.1038/sj.bmt.1703813] [Citation(s) in RCA: 56] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
In the past decade, we have witnessed significant advances in ex vivo hematopoietic stem cell culture expansion, progressing to the point where clinical trials are being designed and conducted. Preclinical milestone investigations provided data to enable expansion of portions of hematopoietic grafts in a clinical setting, indicating safety and feasibility of this approach. Data derived from current clinical trials indicate successful reconstitution of hematopoiesis after myeloablative chemoradiotherapy using infusion of ex vivo-expanded perfusion cultures. Future avenues of exploration will focus upon refining preclinical and clinical studies in which cocktails of available cytokines, novel molecules and sophisticated expansion systems will explore expansion of blood, marrow and umbilical cord blood cells.
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Affiliation(s)
- S M Devine
- Department of Medicine, Siteman Cancer Center, Washington University School of Medicine, St. Louis, MO, USA
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31
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Casati S, Collotta A, Clothier R, Gribaldo L. Refinement of the colony-forming unit-megakaryocyte (CFU-MK) assay for its application to pharmaco-toxicological testing. Toxicol In Vitro 2003; 17:69-75. [PMID: 12537964 DOI: 10.1016/s0887-2333(02)00096-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
In vitro colony-forming unit (CFU) assays can be used in the evaluation of potentially haematotoxic compounds during preclinical testing. The use of undifferentiated haematopoietic cells, able to proliferate and commit towards a specific blood cell lineage, enable selective toxicity to be detected. We optimized the colony-forming unit-megakaryocyte (CFU-MK) assay for toxicological applications. We used a collagen-based colony-forming assay to examine the sensitivity of four cell types: mononuclear human cord blood cells (CBC), mononuclear human bone marrow cells (BMC), cord blood enriched CD34+CD38- cells, and bone marrow enriched CD34+CD38- cells, to the toxic effects of five drugs known to cause thrombocytopenia in humans. The enrichment of CD34+CD38- cells was achieved by using a negative cell separation technique. Our results showed that a comparable toxicity was detected both with CBC, BMC and CD34+CD38- cells enriched from cord blood, whereas CD34+CD38- cells from bone marrow were more resistant to some drugs. The assay showed a high reproducibility of the endpoint measured (IC(50)), independently of the cell type used and donor source. The present study demonstrates that the refined CFU-MK assay is reproducible and can be used for in vitro toxicology studies with CBC as well as BMC.
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Affiliation(s)
- S Casati
- ECVAM, European Centre for the Validation of Alternative Methods, Institute for Health and Consumer Protection, Joint Research Centre, Ispra, Italy.
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32
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Devine SM, Adkins DR, Khoury H, Brown RA, Vij R, Blum W, DiPersio JF. Recent advances in allogeneic hematopoietic stem-cell transplantation. THE JOURNAL OF LABORATORY AND CLINICAL MEDICINE 2003; 141:7-32. [PMID: 12518165 DOI: 10.1067/mlc.2003.5] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Steven M Devine
- Division of Oncology, Section of Bone Marrow Transplantation and Leukemia, Department of Medicine, Siteman Cancer Center, Washington University School of Medicine,
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Lutzko C, Meertens L, Li L, Zhao Y, Abrams-Ogg A, Woods JP, Kruth S, Hough MR, Dubé ID. Human hematopoietic progenitors engraft in fetal canine recipients and expand with neonatal injection of fibroblasts expressing human hematopoietic cytokines. Exp Hematol 2002; 30:801-8. [PMID: 12135679 DOI: 10.1016/s0301-472x(02)00830-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
OBJECTIVE The development of large-animal models for human hematopoiesis will facilitate the study of human hematopoietic stem cells and their progenitors in vivo. In previous studies, human hematopoietic progenitors engrafted in fetal dogs and contributed to hematopoiesis for one year. Despite initially high levels of human cells, the proportion declined to less than 0.1% at 6 months, possibly due to inability of the canine hematopoietic microenvironment to support ongoing human hematopoiesis. In the current experiments we examined the potential of co-transplanting fibroblasts expressing human hematopoietic cytokines with the hematopoietic graft to increase the contribution of human progenitors to chimeric hematopoiesis. METHODS Mid-gestation canine fetuses were injected with 1-3 x 10(7) human cord blood cells and 1 x 10(7) murine fibroblasts engineered to express human cytokines. Neonatal pups were boosted with additional injections of cytokine-expressing fibroblasts. Human cell engraftment was monitored by PCR amplification of human-specific DNA sequences from recipient hematopoietic tissues. RESULTS Human hematopoietic cells were detected in 13/15 fetal recipients for at least 7 months. At time points up to 30 weeks of age, human DNA was detected in stimulated lymphocyte cultures, approximately 0.1% of blood leukocytes and 1.5% (85/5757) of myeloid colonies. Eight months postinfusion, 1.7% of colony-forming units (CFUs) were of human origin. By one year 0.5% or less of myeloid colonies and less than 0.01% of blood leukocytes carried human DNA. Following an infusion of cytokine-expressing fibroblasts at one year, the proportion of human myeloid progenitors rose to 11.5% and remained detectable for 8 months. CONCLUSION These studies confirm that human hematopoietic progenitors can engraft in fetal pups and contribute to multilineage hematopoiesis. Infusion of cells expressing human cytokines is one approach to stimulate human hematopoietic progenitors in vivo and thus increase their contributions to chimeric hematopoiesis.
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Affiliation(s)
- Carolyn Lutzko
- Department of Clinical Pathology, Sunnybrook and Women's Health Sciences Centre, Toronto, Ontario, Canada
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34
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Affiliation(s)
- Catherine M Verfaillie
- Division of Hematology, Department of Medicine, and Stem Cell Institute, University of Minnesota Medical School, Minneapolis, MN 55455, USA.
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35
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Szilvassy SJ, Meyerrose TE, Ragland PL, Grimes B. Differential homing and engraftment properties of hematopoietic progenitor cells from murine bone marrow, mobilized peripheral blood, and fetal liver. Blood 2001; 98:2108-15. [PMID: 11567997 DOI: 10.1182/blood.v98.7.2108] [Citation(s) in RCA: 90] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The rate of reconstitution following hematopoietic stem cell (HSC) transplantation differs widely depending on the tissue source of the cells infused. To test the hypothesis that variability in engraftment kinetics is related to differences in the efficiency with which intravenously transplanted HSCs "home" to the bone marrow (BM), the homing properties of murine fetal liver (FL), adult BM, and mobilized peripheral blood (MPB) cells were compared. Lethally irradiated mice transplanted with 2 x 10(6) FL, BM, or MPB cells exhibited sequentially slower recovery of circulating leukocytes and platelets that correlates with the progressively lower frequency of colony-forming cells (CFCs) in these tissues. However, differences in the rate and degree of early and long-term reconstitution were maintained even after infusing equal numbers of CFCs derived from FL, BM, and MPB. To compare the homing of progenitors from these tissues, cells were labeled with fluorescent PKH26 dye and injected into lethally irradiated hosts. Three hours later, PKH26(+) cells were reisolated from the BM and spleen by fluorescence-activated cell sorting and assayed for in vitro CFCs. Despite the higher level of very late antigen (VLA)-2, VLA-4, and VLA-5 on Sca-1(+)c-kit(+) cells from FL compared to BM, 10-fold fewer FL CFCs homed to hematopoietic organs than those from BM. MPB cells homed slightly better, but still less efficiently than BM cells. Therefore, clonogenic cells from different tissues exhibit striking variations in homing efficiency that does not necessarily correlate with engraftment kinetics. Homing is likely counterbalanced by intrinsic differences in proliferative potential that ultimately determine the rate of hematopoietic reconstitution.
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Affiliation(s)
- S J Szilvassy
- Blood and Marrow Transplant Program, and the Division of Hematology/Oncology, Lucille P. Markey Cancer Center, University of Kentucky, Lexington, Kentucky 40536-0093, USA.
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Abstract
Interest in cord blood stem cells was raised because of the possibility, now realised, of their use in clinical transplantation. The availability of only limited numbers of stem cells in cord blood compared to bone marrow or peripheral blood apheresis after cell mobilisation, led to experimental approaches that first aimed to characterise and then manipulate the stem cells present in cord blood. Their phenotypical and functional characteristics are not identical to those of stem cells in the bone marrow or those cells mobilised into the circulation. The cells selected for phenotype plus Go status show the higher capacity to generate progenitor cells in vitro and will offer the opportunity for mechanistic studies of stem cell self-renewal and proliferation. Another important field of exploration is to investigate the capacity of stem cells in cord blood for differentiation to tissues other than haemopoietic and to establish whether haemopoietic and non-haemopoietic lineages originate in truly multipotential cells or in cells coexisting in cord blood, which have already been limited to differentiation into specific tissue.
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Affiliation(s)
- E A de Wynter
- Molecular Medicine Unit, St James University Hospital, Leeds, UK.
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