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Pylaev TE, Smyshlyaeva IV, Popyhova EB. Regeneration of β-cells of the islet apparatus of the pancreas. Literature review. DIABETES MELLITUS 2022. [DOI: 10.14341/dm12872] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Diabetes of both type 1 and type 2 is characterized by a progressive loss of β-cell mass, which contributes to the disruption of glucose homeostasis. The optimal antidiabetic therapy would be simple replacement of lost cells, but at present, many researchers have shown that the pancreas (PZ) of adults has a limited regenerative potential. In this regard, significant efforts of researchers are directed to methods of inducing the proliferation of β-cells, stimulating the formation of β-cells from alternative endogenous sources and/or the generation of β-cells from pluripotent stem cells. Factors that regulate β-cell regeneration under physiological or pathological conditions, such as mediators, transcription factors, signaling pathways and potential pharmaceuticals, are also being intensively studied. In this review, we consider recent scientific studies carried out in the field of studying the development and regeneration of insulin-producing cells obtained from exogenous and endogenous sources and their use in the treatment of diabetes. The literature search while writing this review was carried out using the databases of the RSIC, CyberLeninka, Scopus, Web of Science, MedLine, PubMed for the period from 2005 to 2021. using the following keywords: diabetes mellitus, pancreas, regeneration, β-cells, stem cells, diabetes therapy.
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Docherty FM, Sussel L. Islet Regeneration: Endogenous and Exogenous Approaches. Int J Mol Sci 2021; 22:ijms22073306. [PMID: 33804882 PMCID: PMC8037662 DOI: 10.3390/ijms22073306] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Revised: 03/17/2021] [Accepted: 03/17/2021] [Indexed: 02/07/2023] Open
Abstract
Both type 1 and type 2 diabetes are characterized by a progressive loss of beta cell mass that contributes to impaired glucose homeostasis. Although an optimal treatment option would be to simply replace the lost cells, it is now well established that unlike many other organs, the adult pancreas has limited regenerative potential. For this reason, significant research efforts are focusing on methods to induce beta cell proliferation (replication of existing beta cells), promote beta cell formation from alternative endogenous cell sources (neogenesis), and/or generate beta cells from pluripotent stem cells. In this article, we will review (i) endogenous mechanisms of beta cell regeneration during steady state, stress and disease; (ii) efforts to stimulate endogenous regeneration and transdifferentiation; and (iii) exogenous methods of beta cell generation and transplantation.
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Oh JE, Choi OK, Park HS, Jung HS, Ryu SJ, Lee YD, Lee SA, Chung SS, Choi EY, Lee DS, Gho YS, Lee H, Park KS. Direct differentiation of bone marrow mononucleated cells into insulin producing cells using pancreatic β-cell-derived components. Sci Rep 2019; 9:5343. [PMID: 30926860 PMCID: PMC6441031 DOI: 10.1038/s41598-019-41823-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2018] [Accepted: 03/04/2019] [Indexed: 12/31/2022] Open
Abstract
Transplantation of stem cell-derived insulin producing cells (IPCs) has been proposed as an alternative to islet transplantation for the treatment of diabetes mellitus. However, current IPC differentiation protocols are focused on generating functional cells from the pluripotent stem cells and tend to rely on multistep, long-term exposure to various exogenous factors. In this study, we addressed the observation that under stress, pancreatic β-cells release essential components that direct the differentiation of the bone marrow nucleated cells (BMNCs) into IPCs. Without any supplementation with known differentiation-inducing factors, IPCs can be generated from BMNCs by in vitro priming for 6 days with conditioned media (CM) from the β-cells. In vitro primed BMNCs expressed the β-cell-specific transcription factors, as well as insulin, and improved hyperglycemia and glucose intolerance after transplantation into the streptozotocin-induced diabetic mice. Furthermore, we have found that components of the CM which trigger the differentiation were enclosed by or integrated into micro particles (MPs), rather than being secreted as soluble factors. Identification of these differentiation-directing factors might enable us to develop novel technologies required for the production of clinically applicable IPCs.
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Affiliation(s)
- Ju Eun Oh
- Biomedical Research Institute, Seoul National University Hospital, Seoul, 03080, Republic of Korea.,Department of Molecular Medicine and Biopharmaceutical Sciences, Graduate School of Convergence Science and Technology, Seoul National University, Seoul, 03080, Republic of Korea
| | - Ok Kyung Choi
- Biomedical Research Institute, Seoul National University Hospital, Seoul, 03080, Republic of Korea
| | - Ho Seon Park
- Biomedical Research Institute, Seoul National University Hospital, Seoul, 03080, Republic of Korea
| | - Hye Seung Jung
- Biomedical Research Institute, Seoul National University Hospital, Seoul, 03080, Republic of Korea.,Department of Internal Medicine, Seoul National University College of Medicine, Seoul, 03080, Republic of Korea
| | - Su Jeong Ryu
- Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, 03080, Republic of Korea
| | - Yong Deok Lee
- Biomedical Research Institute, Seoul National University Hospital, Seoul, 03080, Republic of Korea
| | - Seung-Ah Lee
- Department of Molecular Medicine and Biopharmaceutical Sciences, Graduate School of Convergence Science and Technology, Seoul National University, Seoul, 03080, Republic of Korea
| | - Sung Soo Chung
- Biomedical Research Institute, Seoul National University Hospital, Seoul, 03080, Republic of Korea
| | - Eun Young Choi
- Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, 03080, Republic of Korea
| | - Dong-Sup Lee
- Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, 03080, Republic of Korea
| | - Yong Song Gho
- Department of Life Sciences, Pohang University of Science and Technology, Pohang, Gyeongbuk, 37673, Republic of Korea
| | - Hakmo Lee
- Biomedical Research Institute, Seoul National University Hospital, Seoul, 03080, Republic of Korea. .,Veterans Medical Research Institute, Veterans Health Service Medical Center, Seoul, 05368, Republic of Korea.
| | - Kyong Soo Park
- Biomedical Research Institute, Seoul National University Hospital, Seoul, 03080, Republic of Korea. .,Department of Molecular Medicine and Biopharmaceutical Sciences, Graduate School of Convergence Science and Technology, Seoul National University, Seoul, 03080, Republic of Korea. .,Department of Internal Medicine, Seoul National University College of Medicine, Seoul, 03080, Republic of Korea.
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4
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Mesenchymal stem cells to treat type 1 diabetes. Biochim Biophys Acta Mol Basis Dis 2018; 1866:165315. [PMID: 30508575 DOI: 10.1016/j.bbadis.2018.10.033] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2018] [Accepted: 10/26/2018] [Indexed: 12/13/2022]
Abstract
What is clear is we are in the era of the stem cell and its potential in ameliorating human disease. Our perspective is generated from an in vivo model in a large animal that offers significant advantages (complete transplantation tolerance, large size and long life span). This review is an effort to meld our preclinical observations with others for the reader and to outline potential avenues to improve the present outlook for patients with diabetes. This effort exams the history or background of stem cell research in the laboratory and the clinic, types of stem cells, pluripotency or lack thereof based on a variety of pre-clinical investigations attempting endocrine pancreas recovery using stem cell transplantation. The focus is on the use of hematopoietic and mesenchymal stem cells. This review will also examine recent clinical experience following stem cell transplantation in patients with type 1 diabetes.
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Sordi V, Pellegrini S, Krampera M, Marchetti P, Pessina A, Ciardelli G, Fadini G, Pintus C, Pantè G, Piemonti L. Stem cells to restore insulin production and cure diabetes. Nutr Metab Cardiovasc Dis 2017; 27:583-600. [PMID: 28545927 DOI: 10.1016/j.numecd.2017.02.004] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/16/2016] [Revised: 01/24/2017] [Accepted: 02/11/2017] [Indexed: 12/17/2022]
Abstract
BACKGROUND The advancement of knowledge in the field of regenerative medicine is increasing the therapeutic expectations of patients and clinicians on cell therapy approaches. Within these, stem cell therapies are often evoked as a possible therapeutic option for diabetes, already ongoing or possible in the near future. AIM The purpose of this document is to make a point of the situation on existing knowledge and therapies with stem cells to treat patients with diabetes by focusing on some of the aspects that most frequently raise curiosity and discussion in clinical practice and in the interaction with the patient. In fact, at present there are no clinically approved treatments based on the use of stem cells for the treatment of diabetes, but several therapeutic approaches have already been evaluated or are being evaluated in clinical trials. DATA SYNTHESIS It is possible to identify three large potential application fields: 1) the reconstruction of the β cell mass; 2) the immunomodulation in type 1 diabetes (T1D); 3) the treatment of complications. In this study we will limit the discussion to approaches that have the potential for clinical translation, deliberately omitting aspects of basic biology and preclinical data. Also, we intentionally omit the treatment of the complications that will be the subject of a future document. Finally, an overview of the Italian situation regarding the storage of cord blood cells for the therapy of diabetes will be given.
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Affiliation(s)
- V Sordi
- Diabetes Research Institute (DRI) - IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - S Pellegrini
- Diabetes Research Institute (DRI) - IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - M Krampera
- Stem Cell Research Laboratory, Section of Hematology, Department of Medicine, University of Verona, Italy
| | - P Marchetti
- Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy
| | - A Pessina
- CRC-StaMeTec (Mesenchymal Stem Cells for Cell Therapy), Department of Biomedical, Surgical and Dental Sciences, University of Milan, Milan, Italy
| | - G Ciardelli
- DIMEAS - Department of Mechanical and Aerospace Engineering, Politecnico di Torino, Turin, Italy
| | - G Fadini
- Medicine Department (DIMED), University of Padua, Italy
| | - C Pintus
- Italian National Transplant Center (CNT), Italy
| | - G Pantè
- Italian Medicines Agency (AIFA), Italy
| | - L Piemonti
- Diabetes Research Institute (DRI) - IRCCS San Raffaele Scientific Institute, Milan, Italy.
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Ratajczak MZ, Ratajczak J, Suszynska M, Miller DM, Kucia M, Shin DM. A Novel View of the Adult Stem Cell Compartment From the Perspective of a Quiescent Population of Very Small Embryonic-Like Stem Cells. Circ Res 2017; 120:166-178. [PMID: 28057792 DOI: 10.1161/circresaha.116.309362] [Citation(s) in RCA: 89] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/01/2016] [Revised: 11/16/2016] [Accepted: 11/17/2016] [Indexed: 12/12/2022]
Abstract
Evidence has accumulated that adult hematopoietic tissues and other organs contain a population of dormant stem cells (SCs) that are more primitive than other, already restricted, monopotent tissue-committed SCs (TCSCs). These observations raise several questions, such as the developmental origin of these cells, their true pluripotent or multipotent nature, which surface markers they express, how they can be efficiently isolated from adult tissues, and what role they play in the adult organism. The phenotype of these cells and expression of some genes characteristic of embryonic SCs, epiblast SCs, and primordial germ cells suggests their early-embryonic deposition in developing tissues as precursors of adult SCs. In this review, we will critically discuss all these questions and the concept that small dormant SCs related to migratory primordial germ cells, described as very small embryonic-like SCs, are deposited during embryogenesis in bone marrow and other organs as a backup population for adult tissue-committed SCs and are involved in several processes related to tissue or organ rejuvenation, aging, and cancerogenesis. The most recent results on successful ex vivo expansion of human very small embryonic-like SC in chemically defined media free from feeder-layer cells open up new and exciting possibilities for their application in regenerative medicine.
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Affiliation(s)
- Mariusz Z Ratajczak
- From the Department of Medicine, Stem Cell Biology Program at the James Graham Brown Cancer Center, University of Louisville, KY (M.Z.R., J.R., M.S., D.M.M., M.K.); Department of Regenerative Medicine, Warsaw Medical University, Poland (M.Z.R., M.K.); and Department of Biomedical Sciences, University of Ulsan College of Medicine, Seoul, South Korea (D.-M.S.).
| | - Janina Ratajczak
- From the Department of Medicine, Stem Cell Biology Program at the James Graham Brown Cancer Center, University of Louisville, KY (M.Z.R., J.R., M.S., D.M.M., M.K.); Department of Regenerative Medicine, Warsaw Medical University, Poland (M.Z.R., M.K.); and Department of Biomedical Sciences, University of Ulsan College of Medicine, Seoul, South Korea (D.-M.S.)
| | - Malwina Suszynska
- From the Department of Medicine, Stem Cell Biology Program at the James Graham Brown Cancer Center, University of Louisville, KY (M.Z.R., J.R., M.S., D.M.M., M.K.); Department of Regenerative Medicine, Warsaw Medical University, Poland (M.Z.R., M.K.); and Department of Biomedical Sciences, University of Ulsan College of Medicine, Seoul, South Korea (D.-M.S.)
| | - Donald M Miller
- From the Department of Medicine, Stem Cell Biology Program at the James Graham Brown Cancer Center, University of Louisville, KY (M.Z.R., J.R., M.S., D.M.M., M.K.); Department of Regenerative Medicine, Warsaw Medical University, Poland (M.Z.R., M.K.); and Department of Biomedical Sciences, University of Ulsan College of Medicine, Seoul, South Korea (D.-M.S.)
| | - Magda Kucia
- From the Department of Medicine, Stem Cell Biology Program at the James Graham Brown Cancer Center, University of Louisville, KY (M.Z.R., J.R., M.S., D.M.M., M.K.); Department of Regenerative Medicine, Warsaw Medical University, Poland (M.Z.R., M.K.); and Department of Biomedical Sciences, University of Ulsan College of Medicine, Seoul, South Korea (D.-M.S.)
| | - Dong-Myung Shin
- From the Department of Medicine, Stem Cell Biology Program at the James Graham Brown Cancer Center, University of Louisville, KY (M.Z.R., J.R., M.S., D.M.M., M.K.); Department of Regenerative Medicine, Warsaw Medical University, Poland (M.Z.R., M.K.); and Department of Biomedical Sciences, University of Ulsan College of Medicine, Seoul, South Korea (D.-M.S.)
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Qi X, Pay SL, Yan Y, Thomas J, Lewin AS, Chang LJ, Grant MB, Boulton ME. Systemic Injection of RPE65-Programmed Bone Marrow-Derived Cells Prevents Progression of Chronic Retinal Degeneration. Mol Ther 2017; 25:917-927. [PMID: 28202390 PMCID: PMC5383551 DOI: 10.1016/j.ymthe.2017.01.015] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2016] [Revised: 01/04/2017] [Accepted: 01/06/2017] [Indexed: 01/18/2023] Open
Abstract
Bone marrow stem and progenitor cells can differentiate into a range of non-hematopoietic cell types, including retinal pigment epithelium (RPE)-like cells. In this study, we programmed bone marrow-derived cells (BMDCs) ex vivo by inserting a stable RPE65 transgene using a lentiviral vector. We tested the efficacy of systemically administered RPE65-programmed BMDCs to prevent visual loss in the superoxide dismutase 2 knockdown (Sod2 KD) mouse model of age-related macular degeneration. Here, we present evidence that these RPE65-programmed BMDCs are recruited to the subretinal space, where they repopulate the RPE layer, preserve the photoreceptor layer, retain the thickness of the neural retina, reduce lipofuscin granule formation, and suppress microgliosis. Importantly, electroretinography and optokinetic response tests confirmed that visual function was significantly improved. Mice treated with non-modified BMDCs or BMDCs pre-programmed with LacZ did not exhibit significant improvement in visual deficit. RPE65-BMDC administration was most effective in early disease, when visual function and retinal morphology returned to near normal, and less effective in late-stage disease. This experimental paradigm offers a minimally invasive cellular therapy that can be given systemically overcoming the need for invasive ocular surgery and offering the potential to arrest progression in early AMD and other RPE-based diseases.
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Affiliation(s)
- Xiaoping Qi
- Department of Ophthalmology, Eugene and Marilyn Glick Eye Institute, Indiana University School of Medicine, Indianapolis, IN 46202, USA
| | - S Louise Pay
- Department of Ophthalmology, Eugene and Marilyn Glick Eye Institute, Indiana University School of Medicine, Indianapolis, IN 46202, USA; Department of Medical and Molecular Genetics, Indiana University School of Medicine, Indianapolis, IN 46202, USA
| | - Yuanqing Yan
- Department of Pharmacology and Therapeutics, University of Florida, Gainesville, FL 32610, USA
| | - James Thomas
- Department of Molecular Genetics and Microbiology, University of Florida, Gainesville, FL 32610, USA
| | - Alfred S Lewin
- Department of Molecular Genetics and Microbiology, University of Florida, Gainesville, FL 32610, USA
| | - Lung-Ji Chang
- Department of Molecular Genetics and Microbiology, University of Florida, Gainesville, FL 32610, USA
| | - Maria B Grant
- Department of Ophthalmology, Eugene and Marilyn Glick Eye Institute, Indiana University School of Medicine, Indianapolis, IN 46202, USA
| | - Michael E Boulton
- Department of Ophthalmology, Eugene and Marilyn Glick Eye Institute, Indiana University School of Medicine, Indianapolis, IN 46202, USA.
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8
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Gock H, Lee KFE, Murray-Segal L, Mysore TB, d'Apice AJF, Salvaris EJ, Cowan PJ. Human Endothelial Protein C Receptor Overexpression Protects Intraportal Islet Grafts in Mice. Transplant Proc 2016; 48:2200-7. [PMID: 27569971 DOI: 10.1016/j.transproceed.2016.02.080] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2015] [Accepted: 02/02/2016] [Indexed: 02/06/2023]
Abstract
Islet transplantation can potentially cure type 1 diabetes mellitus, but it is limited by a shortage of human donors as well as by islet graft destruction by inflammatory and thrombotic mechanisms. A possible solution to these problems is to use genetically modified pig islets. Endothelial protein C receptor (EPCR) enhances protein C activation and regulates coagulation, inflammation, and apoptosis. We hypothesized that human EPCR (hEPCR) expression on donor islets would improve graft survival and function. Islets from an hEPCR transgenic mouse line strongly expressed the transgene, and hEPCR expression was maintained after islet isolation. Islets were transplanted from hEPCR mice and wild-type (WT) littermates into diabetic mice in a marginal-dose syngeneic intraportal islet transplantation model. The blood glucose level normalized within 5 days in 5 of 7 recipients of hEPCR islets, compared with only 2 of 7 recipients of WT islets (P < .05). Transplanted hEPCR islets had better preserved morphology and more intense insulin staining than WT grafts, and they retained transgene expression. The improved engraftment compared with WT islets suggests that inflammation and coagulation associated with the transplant process can be reduced by hEPCR expression on donor tissue.
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Affiliation(s)
- H Gock
- Immunology Research Centre, St Vincent's Hospital, Melbourne, Australia; Department of Medicine, University of Melbourne, Melbourne, Australia
| | - K F E Lee
- Immunology Research Centre, St Vincent's Hospital, Melbourne, Australia; Department of Medicine, University of Melbourne, Melbourne, Australia
| | - L Murray-Segal
- Immunology Research Centre, St Vincent's Hospital, Melbourne, Australia
| | - T B Mysore
- Immunology Research Centre, St Vincent's Hospital, Melbourne, Australia; Department of Medicine, University of Melbourne, Melbourne, Australia
| | - A J F d'Apice
- Immunology Research Centre, St Vincent's Hospital, Melbourne, Australia; Department of Medicine, University of Melbourne, Melbourne, Australia
| | - E J Salvaris
- Immunology Research Centre, St Vincent's Hospital, Melbourne, Australia
| | - P J Cowan
- Immunology Research Centre, St Vincent's Hospital, Melbourne, Australia; Department of Medicine, University of Melbourne, Melbourne, Australia.
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9
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Oh K, Kim SR, Kim DK, Seo MW, Lee C, Lee HM, Oh JE, Choi EY, Lee DS, Gho YS, Park KS. In Vivo Differentiation of Therapeutic Insulin-Producing Cells from Bone Marrow Cells via Extracellular Vesicle-Mimetic Nanovesicles. ACS NANO 2015; 9:11718-11727. [PMID: 26513554 DOI: 10.1021/acsnano.5b02997] [Citation(s) in RCA: 66] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The current diabetes mellitus pandemic constitutes an important global health problem. Reductions in the mass and function of β-cells contribute to most of the pathophysiology underlying diabetes. Thus, physiological control of blood glucose levels can be adequately restored by replacing functioning β-cell mass. Sources of functional islets for transplantation are limited, resulting in great interest in the development of alternate sources, and recent progress regarding cell fate change via utilization of extracellular vesicles, also known as exosomes and microvesicles, is notable. Thus, this study investigated the therapeutic capacity of extracellular vesicle-mimetic nanovesicles (NVs) derived from a murine pancreatic β-cell line. To differentiate insulin-producing cells effectively, a three-dimensional in vivo microenvironment was constructed in which extracellular vesicle-mimetic NVs were applied to subcutaneous Matrigel platforms containing bone marrow (BM) cells in diabetic immunocompromised mice. Long-term control of glucose levels was achieved over 60 days, and differentiation of donor BM cells into insulin-producing cells in the subcutaneous Matrigel platforms, which were composed of islet-like cell clusters with extensive capillary networks, was confirmed along with the expression of key pancreatic β-cell markers. The resectioning of the subcutaneous Matrigel platforms caused a rebound in blood glucose levels and confirmed the source of functioning β-cells. Thus, efficient differentiation of therapeutic insulin-producing cells was attained in vivo through the use of extracellular vesicle-mimetic NVs, which maintained physiological glucose levels.
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Affiliation(s)
| | - Sae Rom Kim
- Department of Life Sciences, Pohang University of Science and Technology , Pohang, Gyeongbuk 37673, Korea
| | - Dae-Kyum Kim
- Department of Life Sciences, Pohang University of Science and Technology , Pohang, Gyeongbuk 37673, Korea
| | | | - Changjin Lee
- Department of Life Sciences, Pohang University of Science and Technology , Pohang, Gyeongbuk 37673, Korea
| | - Hak Mo Lee
- Biomedical Research Institute, Seoul National University Hospital , Seoul 110-744, Korea
| | - Ju-Eun Oh
- Department of Molecular Medicine and Biopharmaceutical Sciences, Graduate School of Convergence Science and Technology, Seoul National University , Seoul 110-799, Korea
| | | | | | - Yong Song Gho
- Department of Life Sciences, Pohang University of Science and Technology , Pohang, Gyeongbuk 37673, Korea
| | - Kyong Soo Park
- Biomedical Research Institute, Seoul National University Hospital , Seoul 110-744, Korea
- Department of Internal Medicine, Seoul National University College of Medicine , Seoul 110-799, Korea
- Department of Molecular Medicine and Biopharmaceutical Sciences, Graduate School of Convergence Science and Technology, Seoul National University , Seoul 110-799, Korea
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Seymour T, Twigger AJ, Kakulas F. Pluripotency Genes and Their Functions in the Normal and Aberrant Breast and Brain. Int J Mol Sci 2015; 16:27288-301. [PMID: 26580604 PMCID: PMC4661882 DOI: 10.3390/ijms161126024] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2015] [Revised: 11/05/2015] [Accepted: 11/06/2015] [Indexed: 12/11/2022] Open
Abstract
Pluripotent stem cells (PSCs) attracted considerable interest with the successful isolation of embryonic stem cells (ESCs) from the inner cell mass of murine, primate and human embryos. Whilst it was initially thought that the only PSCs were ESCs, in more recent years cells with similar properties have been isolated from organs of the adult, including the breast and brain. Adult PSCs in these organs have been suggested to be remnants of embryonic development that facilitate normal tissue homeostasis during repair and regeneration. They share certain characteristics with ESCs, such as an inherent capacity to self-renew and differentiate into cells of the three germ layers, properties that are regulated by master pluripotency transcription factors (TFs) OCT4 (octamer-binding transcription factor 4), SOX2 (sex determining region Y-box 2), and homeobox protein NANOG. Aberrant expression of these TFs can be oncogenic resulting in heterogeneous tumours fueled by cancer stem cells (CSC), which are resistant to conventional treatments and are associated with tumour recurrence post-treatment. Further to enriching our understanding of the role of pluripotency TFs in normal tissue function, research now aims to develop optimized isolation and propagation methods for normal adult PSCs and CSCs for the purposes of regenerative medicine, developmental biology, and disease modeling aimed at targeted personalised cancer therapies.
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Affiliation(s)
- Tracy Seymour
- School of Chemistry and Biochemistry, Faculty of Science, the University of Western Australia, Perth, Western Australia 6009, Australia.
- School of Medicine and Pharmacology, Faculty of Medicine, Dentistry and Health Sciences, the University of Western Australia, Perth, Western Australia 6009, Australia.
| | - Alecia-Jane Twigger
- School of Chemistry and Biochemistry, Faculty of Science, the University of Western Australia, Perth, Western Australia 6009, Australia.
| | - Foteini Kakulas
- School of Chemistry and Biochemistry, Faculty of Science, the University of Western Australia, Perth, Western Australia 6009, Australia.
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11
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Goldenberg-Cohen N, Iskovich S, Askenasy N. Bone Marrow Homing Enriches Stem Cells Responsible for Neogenesis of Insulin-Producing Cells, While Radiation Decreases Homing Efficiency. Stem Cells Dev 2015; 24:2297-306. [PMID: 26067874 DOI: 10.1089/scd.2014.0524] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
Small-sized adult bone marrow cells isolated by counterflow centrifugal elutriation and depleted of lineage markers (Fr25lin(-)) have the capacity to differentiate into insulin-producing cells and stabilize glycemic control. This study assessed competitive migration of syngeneic stem cells to the bone marrow and islets in a murine model of chemical diabetes. VLA-4 is expressed in ∼ 25% of these cells, whereas CXCR4 is not detected, however, it is transcriptionally upregulated (6-fold). The possibility to enrich stem cells by a bone marrow homing (BM-H) functional assay was assessed in sequential transplants. Fr25lin(-) cells labeled with PKH26 were grafted into primary myeloablated recipients, and mitotically quiescent Fr25lin(-)PKH(bright) cells were sorted from the bone marrow after 2 days. The contribution of bone marrow-homed stem cells was remarkably higher in secondary recipients compared to freshly elutriated cells. The therapeutic efficacy was further increased by omission of irradiation in the secondary recipients, showing a 25-fold enrichment of islet-reconstituting cells by the bone marrow homing assay. Donor cells identified by the green fluorescent protein (GFP) and a genomic marker in sex-mismatched transplants upregulated PDX-1 and produced proinsulin, affirming the capacity of BM-H cells to convert in the injured islets. There was no evidence of transcriptional priming of freshly elutriated subsets to express PDX-1, insulin, and other markers of endocrine progenitors, indicating that the bone marrow harbors stem cells with versatile differentiation capacity. Affinity to the bone marrow can be used to enrich stem cells for pancreatic regeneration, and reciprocally, conditioning reduces the competitive incorporation in the injured islets.
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Affiliation(s)
- Nitza Goldenberg-Cohen
- 1 Krieger Eye Research Laboratory, Schneider Children's Medical Center of Israel , Petach Tikva, Israel
| | - Svetlana Iskovich
- 2 Frankel Laboratory, Center for Stem Cell Research, Schneider Children's Medical Center of Israel , Petach Tikva, Israel
| | - Nadir Askenasy
- 2 Frankel Laboratory, Center for Stem Cell Research, Schneider Children's Medical Center of Israel , Petach Tikva, Israel
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12
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Bone marrow stem/progenitor cell mobilization in C57BL/6J and BALB/c mice. Lab Anim Res 2014; 30:14-20. [PMID: 24707300 PMCID: PMC3973806 DOI: 10.5625/lar.2014.30.1.14] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2014] [Revised: 02/10/2014] [Accepted: 02/14/2014] [Indexed: 01/13/2023] Open
Abstract
Bone marrow (BM) has been considered as a reservoir of stem/progenitor cells which are able to differentiate into ectodermal, endodermal, and mesodermal origins in vitro as well as in vivo. Following adequate stimulation, such as granulocyte stimulating factor (G-CSF) or AMD3100, BM resident stem/progenitor cells (BMSPCs) can be mobilized to peripheral blood. Several host-related factors are known to participate in this mobilization process. In fact, a significant number of donors are resistant to G-CSF induced mobilization protocols. AMD3100 is currently used in combination with G-CSF. However, information regarding host-related factors which may influence the AMD3100 directed mobilization is extremely limited. In this study, we were to get some more knowledge on the host-related factors that affect the efficiency of AMD3100 induced mobilization by employing in vivo mobilization experiments. As a result, we found that C57BL/6J mice are more sensitive to AMD3100 but less sensitive to G-CSF which promotes the proliferation of BMSPCs. We excluded S1P as one of the host related factor which influences AMD3100 directed mobilization because pre-treatment of S1P receptor antagonist FTY720 did not inhibit BMSPC mobilization. Further in vitro experiments revealed that BALB/c mice, compared to C57BL/6J mice, have less BMSPCs which migrate in response to host related factors such as sphingosine-1-phosphate (S1P) and to CXCL12. We conclude that AMD3100-directed mobilization depends on the number of BMSPCs rather than on the host-related factors. These results suggest that the combination of AMD3100 and G-CSF is co-operative and is optimal for the mobilization of BMSPCs.
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Iskovich S, Goldenberg-Cohen N, Sadikov T, Yaniv I, Stein J, Askenasy N. Two distinct mechanisms mediate the involvement of bone marrow cells in islet remodeling: neogenesis of insulin-producing cells and support of islet recovery. Cell Transplant 2013; 24:879-90. [PMID: 24380400 DOI: 10.3727/096368913x676899] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
We have recently reported that small-sized bone marrow cells (BMCs) isolated by counterflow centrifugal elutriation and depleted of lineage markers (Fr25lin(-)) have the capacity to differentiate and contribute to regeneration of injured islets. In this study, we assess some of the characteristics of these cells compared to elutriated hematopoietic progenitors (R/O) and whole BMCs in a murine model of streptozotocin-induced chemical diabetes. The GFP(bright)CD45(+) progeny of whole BMCs and R/O progenitors progressively infiltrate the pancreas with evolution of donor chimerism; are found at islet perimeter, vascular, and ductal walls; and have a modest impact on islet recovery from injury. In contrast, Fr25lin(-) cells incorporate in the islets, convert to GFP(dim)CD45(-)PDX-1(+) phenotypes, produce proinsulin, and secrete insulin with significant contribution to stabilization of glucose homeostasis. The elutriated Fr25lin(-) cells express low levels of CD45 and are negative for SCA-1 and c-kit, as removal of cells expressing these markers did not impair conversion to produce insulin. BMCs mediate two synergistic mechanisms that contribute to islet recovery from injury: support of islet remodeling by hematopoietic cells and neogenesis of insulin-producing cells from stem cells.
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Affiliation(s)
- Svetlana Iskovich
- Frankel Laboratory, Schneider Children's Medical Center of Israel, Petach Tikva, Israel
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Bhonde RR, Sheshadri P, Sharma S, Kumar A. Making surrogate β-cells from mesenchymal stromal cells: perspectives and future endeavors. Int J Biochem Cell Biol 2013; 46:90-102. [PMID: 24275096 DOI: 10.1016/j.biocel.2013.11.006] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2013] [Revised: 10/29/2013] [Accepted: 11/05/2013] [Indexed: 02/06/2023]
Abstract
Generation of surrogate β-cells is the need of the day to compensate the short supply of islets for transplantation to diabetic patients requiring daily shots of insulin. Over the years several sources of stem cells have been claimed to cater to the need of insulin producing cells. These include human embryonic stem cells, induced pluripotent stem cells, human perinatal tissues such as amnion, placenta, umbilical cord and postnatal tissues involving adipose tissue, bone marrow, blood monocytes, cord blood, dental pulp, endometrium, liver, labia minora dermis-derived fibroblasts and pancreas. Despite the availability of such heterogonous sources, there is no substantial breakthrough in selecting and implementing an ideal source for generating large number of stable insulin producing cells. Although the progress in derivation of β-cell like cells from embryonic stem cells has taken a greater leap, their application is limited due to controversy surrounding the destruction of human embryo and immune rejection. Since multipotent mesenchymal stromal cells are free of ethical and immunological complications, they could provide unprecedented opportunity as starting material to derive insulin secreting cells. The main focus of this review is to discuss the merits and demerits of MSCs obtained from human peri- and post-natal tissue sources to yield abundant glucose responsive insulin producing cells as ideal candidates for prospective stem cell therapy to treat diabetes.
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Affiliation(s)
- Ramesh R Bhonde
- Manipal Institute of Regenerative Medicine, GKVK Post, Alalsandra, Yelahanka, Bangalore 560065, India
| | - Preethi Sheshadri
- Manipal Institute of Regenerative Medicine, GKVK Post, Alalsandra, Yelahanka, Bangalore 560065, India
| | - Shikha Sharma
- Manipal Institute of Regenerative Medicine, GKVK Post, Alalsandra, Yelahanka, Bangalore 560065, India
| | - Anujith Kumar
- Manipal Institute of Regenerative Medicine, GKVK Post, Alalsandra, Yelahanka, Bangalore 560065, India.
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Shin DM, Suszynska M, Mierzejewska K, Ratajczak J, Ratajczak MZ. Very small embryonic-like stem-cell optimization of isolation protocols: an update of molecular signatures and a review of current in vivo applications. Exp Mol Med 2013; 45:e56. [PMID: 24232255 PMCID: PMC3849570 DOI: 10.1038/emm.2013.117] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2013] [Accepted: 07/22/2013] [Indexed: 01/09/2023] Open
Abstract
As the theory of stem cell plasticity was first proposed, we have explored an alternative hypothesis for this phenomenon: namely that adult bone marrow (BM) and umbilical cord blood (UCB) contain more developmentally primitive cells than hematopoietic stem cells (HSCs). In support of this notion, using multiparameter sorting we were able to isolate small Sca1(+)Lin(-)CD45(-) cells and CD133(+)Lin(-)CD45(-) cells from murine BM and human UCB, respectively, which were further enriched for the detection of various early developmental markers such as the SSEA antigen on the surface and the Oct4 and Nanog transcription factors in the nucleus. Similar populations of cells have been found in various organs by our team and others, including the heart, brain and gonads. Owing to their primitive cellular features, such as the high nuclear/cytoplasm ratio and the presence of euchromatin, they are called very small embryonic-like stem cells (VSELs). In the appropriate in vivo models, VSELs differentiate into long-term repopulating HSCs, mesenchymal stem cells (MSCs), lung epithelial cells, cardiomyocytes and gametes. In this review, we discuss the most recent data from our laboratory and other groups regarding the optimal isolation procedures and describe the updated molecular characteristics of VSELs.
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Affiliation(s)
- Dong-Myung Shin
- Department of Biomedical Sciences, University of Ulsan College of Medicine, Seoul, Korea
| | - Malwina Suszynska
- Stem Cell Institute at James Graham Brown Cancer Center, University of Louisville, Louisville, KY, USA
| | - Kasia Mierzejewska
- Stem Cell Institute at James Graham Brown Cancer Center, University of Louisville, Louisville, KY, USA
| | - Janina Ratajczak
- Stem Cell Institute at James Graham Brown Cancer Center, University of Louisville, Louisville, KY, USA
| | - Mariusz Z Ratajczak
- Stem Cell Institute at James Graham Brown Cancer Center, University of Louisville, Louisville, KY, USA
- Stem Cell Institute at James Graham Brown Cancer Center, University of Louisville, 500 South Floyd Street, Room 107, Louisville, KY 40202, USA. E-mail:
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Very small embryonic-like stem cells (VSELs) represent a real challenge in stem cell biology: recent pros and cons in the midst of a lively debate. Leukemia 2013; 28:473-84. [PMID: 24018851 PMCID: PMC3948156 DOI: 10.1038/leu.2013.255] [Citation(s) in RCA: 75] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2013] [Accepted: 08/28/2013] [Indexed: 02/07/2023]
Abstract
The concept that adult tissue, including bone marrow (BM), contains early-development cells with broader differentiation potential has again been recently challenged. In response, we would like to review the accumulated evidence from several independent laboratories that adult tissues, including BM, harbor a population of very rare stem cells that may cross germ layers in their differentiation potential. Thus, the BM stem cell compartment hierarchy needs to be revisited. These dormant, early-development cells that our group described as very small embryonic-like stem cells (VSELs) most likely overlap with similar populations of stem cells that have been identified in adult tissues by other investigators as the result of various experimental strategies and have been given various names. As reported, murine VSELs have some pluripotent stem cell characteristics. Moreover, they display several epiblast/germline markers that suggest their embryonic origin and developmental deposition in adult BM. Moreover, at the molecular level, changes in expression of parentally imprinted genes (for example, Igf2–H19) and resistance to insulin/insulin-like growth factor signaling (IIS) regulates their quiescent state in adult tissues. In several emergency situations related to organ damage, VSELs can be activated and mobilized into peripheral blood, and in appropriate animal models they contribute to tissue organ/regeneration. Interestingly, their number correlates with lifespan in mice, and they may also be involved in some malignancies. VSELs have been successfully isolated in several laboratories; however, some investigators experience problems with their isolation.
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Kaminitz A, Yolcu ES, Mizrahi K, Shirwan H, Askenasy N. Killer Treg cells ameliorate inflammatory insulitis in non-obese diabetic mice through local and systemic immunomodulation. Int Immunol 2013; 25:485-94. [DOI: 10.1093/intimm/dxt016] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
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Avraham-Lubin BCR, Goldenberg-Cohen N, Sadikov T, Askenasy N. VEGF induces neuroglial differentiation in bone marrow-derived stem cells and promotes microglia conversion following mobilization with GM-CSF. Stem Cell Rev Rep 2013; 8:1199-210. [PMID: 22810360 DOI: 10.1007/s12015-012-9396-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
PURPOSE Evaluation of potential tropic effects of vascular endothelial growth factor (VEGF) on the incorporation and differentiation of bone-marrow-derived stem cells (BMSCs) in a murine model of anterior ischemic optic neuropathy (AION). METHODS In the first approach, small-sized subset of BMCs were isolated from GFP donors mice by counterflow centrifugal elutriation and depleted of hematopoietic lineages (Fr25lin(-)). These cells were injected into a peripheral vein (1 × 10(6) in 0.2 ml) or inoculated intravitreally (2 × 10(5)) to syngeneic mice, with or without intravitreal injection of 5 μg/2μL VEGF, simultaneously with AION induction. In a second approach, hematopoietic cells were substituted by myelablative transplant of syngeseic GFP + bone marrow cells. After 3 months, progenitors were mobilized with granulocyte-macrophage colony-stimulating factor (GM-CSF) followed by VEGF inoculation into the vitreous body and AION induction . Engraftment and phenotype were examined by immunohistochemistry and FISH at 4 and 24 weeks post-transplantation, and VEGF receptors were determined by real time PCR. RESULTS VEGF had no quantitative effect on incorporation of elutriated cells in the injured retina, yet it induced early expression of neuroal markers in cells incorporated in the RGC layer and promoted durable gliosis, most prominent perivascular astrocytes. These effects were mediated by VEGF-R1/Flt-1, which is constitutively expresses in the elutriated fraction of stem cells. Mobilization with GM-CSF limited the differentiation of bone marrow progenitors to microglia, which was also fostered by VEGF. CONCLUSIONS VEGF signaling mediated by Flt-1 induces early neural and sustained astrocytic differentiation of stem cells elutriated from adult bone-marrow, with significant contribution to stabilization retinal architecture following ischemic injury.
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Affiliation(s)
- Bat-Chen R Avraham-Lubin
- The Krieger Eye Research Laboratory, Felsenstein Medical Research Center, Tel Aviv University, Petach Tikva, Israel
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Ratajczak MZ, Mierzejewska K, Ratajczak J, Kucia M. CD133 Expression Strongly Correlates with the Phenotype of Very Small Embryonic-/Epiblast-Like Stem Cells. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2013; 777:125-41. [PMID: 23161080 DOI: 10.1007/978-1-4614-5894-4_9] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
CD133 antigen (prominin-1) is a useful cell surface marker of very small embryonic-like stem cells (VSELs). Antibodies against it, conjugated to paramagnetic beads or fluorochromes, are thus powerful biological tools for their isolation from human umbilical cord blood, mobilized peripheral blood, and bone marrow. VSELs are described with the following characteristics: (1) are slightly smaller than red blood cells; (2) display a distinct morphology, typified by a high nuclear/cytoplasmic ratio and an unorganized euchromatin; (3) become mobilized during stress situations into peripheral blood; (4) are enriched in the CD133(+)Lin(-)CD45(-) cell fraction in humans; and (5) express markers of pluripotent stem cells (e.g., Oct-4, Nanog, and stage-specific embryonic antigen-4). The most recent in vivo data from our and other laboratories demonstrated that human VSELs exhibit some characteristics of long-term repopulating hematopoietic stem cells and are at the top of the hierarchy in the mesenchymal lineage. However, still more labor is needed to characterize better at a molecular level these rare cells.
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Affiliation(s)
- Mariusz Z Ratajczak
- Stem Cell Institute at James Graham Brown Cancer Center, University of Louisville, 500 S. Floyd Street, 40202 Rm. 107, Louisville, KY, USA,
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Ratajczak MZ, Shin DM, Liu R, Mierzejewska K, Ratajczak J, Kucia M, Zuba-Surma EK. Very small embryonic/epiblast-like stem cells (VSELs) and their potential role in aging and organ rejuvenation--an update and comparison to other primitive small stem cells isolated from adult tissues. Aging (Albany NY) 2012; 4:235-46. [PMID: 22498452 PMCID: PMC3371759 DOI: 10.18632/aging.100449] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Very small embryonic-like stem cells (VSELs) are a population of developmentally early stem cells residing in adult tissues. These rare cells, which are slightly smaller than red blood cells, i) become mobilized during stress situations into peripheral blood, ii) are enriched in the Sca1+Lin−CD45− cell fraction in mice and the CD133+ Lin−CD45− cell fraction in humans, iii) express markers of pluripotent stem cells (e.g., Oct4, Nanog, and SSEA), and iv) display a distinct morphology characterized by a high nuclear/cytoplasmic ratio and undifferentiated chromatin. Recent evidence indicates that murine VSELs are kept quiescent in adult tissues and protected from teratoma formation by epigenetic modification of imprinted genes that regulate insulin/insulin like growth factor signaling (IIS). The successful reversal of these epigenetic changes in VSELs that render them quiescent will be crucial for efficient expansion of these cells. The most recent data in vivo from our and other laboratories demonstrated that both murine and human VSELs exhibit some characteristics of long-term repopulating hematopoietic stem cells (LT-HSCs), are at the top of the hierarchy in the mesenchymal lineage, and may differentiate into organ-specific cells (e.g., cardiomyocytes). Moreover, as recently demonstrated the number of these cells positively correlates in several murine models with longevity. Finally, while murine BM-derived VSELs have been extensively characterized more work is needed to better characterize these small cells at the molecular level in humans.
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Affiliation(s)
- Mariusz Z Ratajczak
- Stem Cell Biology Program at the James Graham Brown Cancer Center, University of Louisville, Louisville, KT, USA.
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Goldenberg-Cohen N, Avraham-Lubin BCR, Sadikov T, Goldstein RS, Askenasy N. Primitive stem cells derived from bone marrow express glial and neuronal markers and support revascularization in injured retina exposed to ischemic and mechanical damage. Stem Cells Dev 2011; 21:1488-500. [PMID: 21905921 DOI: 10.1089/scd.2011.0366] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Ischemic or mechanical injury to the optic nerve is an irreversible cause of vision loss, associated with limited regeneration and poor response to neuroprotective agents. The aim of this study was to assess the capacity of adult bone marrow cells to participate in retinal regeneration following the induction of anterior ischemic optic neuropathy (AION) and optic nerve crush (ONC) in a rodent model. The small-sized subset of cells isolated by elutriation and lineage depletion (Fr25lin(-)) was found to be negative for the neuroglial markers nestin and glial fibrillary acidic protein (GFAP). Syngeneic donor cells, identified by genomic marker in sex-mismatched transplants and green fluorescent protein, incorporated into the injured retina (AION and ONC) at a frequency of 0.35%-0.45% after intravenous infusion and 1.8%-2% after intravitreous implantation. Perivascular cells with astrocytic morphology expressing GFAP and vimentin were of the predominant lineage that engrafted after AION injury; 10%-18% of the donor cells incorporated in the retinal ganglion cell layer and expressed NeuN, Thy-1, neurofilament, and beta-tubulin III. The Fr25lin(-) cells displayed an excellent capacity to migrate to sites of tissue disruption and developed coordinated site-specific morphological and phenotypic neural and glial markers. In addition to cellular reconstitution of the injured retinal layers, these cells contributed to endothelial revascularization and apparently supported remodeling by secretion of insulin-like growth factor-1. These results suggest that elutriated autologous adult bone marrow-derived stem cells may serve as an accessible source for cellular reconstitution of the retina following injury.
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Affiliation(s)
- Nitza Goldenberg-Cohen
- Krieger Eye Research Laboratory, Schneider Children's Medical Center of Israel, Petach Tikva, Israel.
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