1
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Thambyrajah R, Maqueda M, Fadlullah MZ, Proffitt M, Neo WH, Guillén Y, Casado-Pelaez M, Herrero-Molinero P, Brujas C, Castelluccio N, González J, Iglesias A, Marruecos L, Ruiz-Herguido C, Esteller M, Mereu E, Lacaud G, Espinosa L, Bigas A. IκBα controls dormancy in hematopoietic stem cells via retinoic acid during embryonic development. Nat Commun 2024; 15:4673. [PMID: 38824124 PMCID: PMC11144194 DOI: 10.1038/s41467-024-48854-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Accepted: 05/14/2024] [Indexed: 06/03/2024] Open
Abstract
Recent findings suggest that Hematopoietic Stem Cells (HSC) and progenitors arise simultaneously and independently of each other already in the embryonic aorta-gonad mesonephros region, but it is still unknown how their different features are established. Here, we uncover IκBα (Nfkbia, the inhibitor of NF-κB) as a critical regulator of HSC proliferation throughout development. IκBα balances retinoic acid signaling levels together with the epigenetic silencer, PRC2, specifically in HSCs. Loss of IκBα decreases proliferation of HSC and induces a dormancy related gene expression signature instead. Also, IκBα deficient HSCs respond with superior activation to in vitro culture and in serial transplantation. At the molecular level, chromatin regions harboring binding motifs for retinoic acid signaling are hypo-methylated for the PRC2 dependent H3K27me3 mark in IκBα deficient HSCs. Overall, we show that the proliferation index in the developing HSCs is regulated by a IκBα-PRC2 axis, which controls retinoic acid signaling.
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Grants
- PID2022-137945OB-I00 Ministry of Economy and Competitiveness | Agencia Estatal de Investigación (Spanish Agencia Estatal de Investigación)
- PID2019-104695RB-I00 Ministry of Economy and Competitiveness | Agencia Estatal de Investigación (Spanish Agencia Estatal de Investigación)
- 2021SGR00039 Departament d'Innovació, Universitats i Empresa, Generalitat de Catalunya (Department of Innovation, Education and Enterprise, Government of Catalonia)
- BP2016(00021) Departament d'Innovació, Universitats i Empresa, Generalitat de Catalunya (Department of Innovation, Education and Enterprise, Government of Catalonia)
- BP2018(00034) Departament d'Innovació, Universitats i Empresa, Generalitat de Catalunya (Department of Innovation, Education and Enterprise, Government of Catalonia)
- CA22/00011 Ministry of Economy and Competitiveness | Instituto de Salud Carlos III (Institute of Health Carlos III)
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Affiliation(s)
- Roshana Thambyrajah
- Program in Cancer Research, Hospital del Mar Research Institute, Barcelona, Spain.
- Josep Carreras Leukemia Research Institute, Barcelona, Spain.
| | - Maria Maqueda
- Program in Cancer Research, Hospital del Mar Research Institute, Barcelona, Spain
- Josep Carreras Leukemia Research Institute, Barcelona, Spain
- Centro de Investigacion Biomedica en Red Cancer (CIBERONC), Madrid, Spain
| | - Muhammad Zaki Fadlullah
- Cancer Research UK Stem Cell Biology Group, Cancer Research UK Manchester Institute, The University of Manchester, Manchester, UK
| | - Martin Proffitt
- Program in Cancer Research, Hospital del Mar Research Institute, Barcelona, Spain
| | - Wen Hao Neo
- Cancer Research UK Stem Cell Biology Group, Cancer Research UK Manchester Institute, The University of Manchester, Manchester, UK
| | - Yolanda Guillén
- Program in Cancer Research, Hospital del Mar Research Institute, Barcelona, Spain
| | | | | | - Carla Brujas
- Program in Cancer Research, Hospital del Mar Research Institute, Barcelona, Spain
| | - Noemi Castelluccio
- Program in Cancer Research, Hospital del Mar Research Institute, Barcelona, Spain
- Ghent University Hospital, Ghent, Belgium
| | - Jessica González
- Program in Cancer Research, Hospital del Mar Research Institute, Barcelona, Spain
- Josep Carreras Leukemia Research Institute, Barcelona, Spain
- Centro de Investigacion Biomedica en Red Cancer (CIBERONC), Madrid, Spain
| | - Arnau Iglesias
- Program in Cancer Research, Hospital del Mar Research Institute, Barcelona, Spain
- Josep Carreras Leukemia Research Institute, Barcelona, Spain
- Centro de Investigacion Biomedica en Red Cancer (CIBERONC), Madrid, Spain
| | - Laura Marruecos
- Program in Cancer Research, Hospital del Mar Research Institute, Barcelona, Spain
| | | | - Manel Esteller
- Josep Carreras Leukemia Research Institute, Barcelona, Spain
- Centro de Investigacion Biomedica en Red Cancer (CIBERONC), Madrid, Spain
- Institucio Catalana de Recerca i Estudis Avançats (ICREA), Barcelona, Catalonia, Spain
- Physiological Sciences Department, School of Medicine and Health Sciences, University of Barcelona (UB), Barcelona, Catalonia, Spain
| | | | - Georges Lacaud
- Cancer Research UK Stem Cell Biology Group, Cancer Research UK Manchester Institute, The University of Manchester, Manchester, UK
| | - Lluis Espinosa
- Program in Cancer Research, Hospital del Mar Research Institute, Barcelona, Spain
- Centro de Investigacion Biomedica en Red Cancer (CIBERONC), Madrid, Spain
| | - Anna Bigas
- Program in Cancer Research, Hospital del Mar Research Institute, Barcelona, Spain.
- Josep Carreras Leukemia Research Institute, Barcelona, Spain.
- Centro de Investigacion Biomedica en Red Cancer (CIBERONC), Madrid, Spain.
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2
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Lin A, Ramaswamy Y, Misra A. Developmental heterogeneity of vascular cells: Insights into cellular plasticity in atherosclerosis? Semin Cell Dev Biol 2024; 155:3-15. [PMID: 37316416 DOI: 10.1016/j.semcdb.2023.06.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2023] [Revised: 05/30/2023] [Accepted: 06/06/2023] [Indexed: 06/16/2023]
Abstract
Smooth muscle cells, endothelial cells and macrophages display remarkable heterogeneity within the healthy vasculature and under pathological conditions. During development, these cells arise from numerous embryological origins, which confound with different microenvironments to generate postnatal vascular cell diversity. In the atherosclerotic plaque milieu, all these cell types exhibit astonishing plasticity, generating a variety of plaque burdening or plaque stabilizing phenotypes. And yet how developmental origin influences intraplaque cell plasticity remains largely unexplored despite evidence suggesting this may be the case. Uncovering the diversity and plasticity of vascular cells is being revolutionized by unbiased single cell whole transcriptome analysis techniques that will likely continue to pave the way for therapeutic research. Cellular plasticity is only just emerging as a target for future therapeutics, and uncovering how intraplaque plasticity differs across vascular beds may provide key insights into why different plaques behave differently and may confer different risks of subsequent cardiovascular events.
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Affiliation(s)
- Alexander Lin
- Atherosclerosis and Vascular Remodeling Group, Heart Research Institute, Sydney, NSW, Australia; School of Biomedical Engineering, Faculty of Engineering, The University of Sydney, Sydney, NSW, Australia
| | - Yogambha Ramaswamy
- School of Biomedical Engineering, Faculty of Engineering, The University of Sydney, Sydney, NSW, Australia
| | - Ashish Misra
- Atherosclerosis and Vascular Remodeling Group, Heart Research Institute, Sydney, NSW, Australia; Heart Research Institute, The University of Sydney, Sydney, NSW, Australia; Faculty of Medicine and Health, The University of Sydney, Sydney, NSW, Australia.
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3
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Wu D, Khan FA, Zhang K, Pandupuspitasari NS, Negara W, Guan K, Sun F, Huang C. Retinoic acid signaling in development and differentiation commitment and its regulatory topology. Chem Biol Interact 2024; 387:110773. [PMID: 37977248 DOI: 10.1016/j.cbi.2023.110773] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Revised: 10/11/2023] [Accepted: 10/20/2023] [Indexed: 11/19/2023]
Abstract
Retinoic acid (RA), the derivative of vitamin A/retinol, is a signaling molecule with important implications in health and disease. It is a well-known developmental morphogen that functions mainly through the transcriptional activity of nuclear RA receptors (RARs) and, uncommonly, through other nuclear receptors, including peroxisome proliferator-activated receptors. Intracellular RA is under spatiotemporally fine-tuned regulation by synthesis and degradation processes catalyzed by retinaldehyde dehydrogenases and P450 family enzymes, respectively. In addition to dictating the transcription architecture, RA also impinges on cell functioning through non-genomic mechanisms independent of RAR transcriptional activity. Although RA-based differentiation therapy has achieved impressive success in the treatment of hematologic malignancies, RA also has pro-tumor activity. Here, we highlight the relevance of RA signaling in cell-fate determination, neurogenesis, visual function, inflammatory responses and gametogenesis commitment. Genetic and post-translational modifications of RAR are also discussed. A better understanding of RA signaling will foster the development of precision medicine to improve the defects caused by deregulated RA signaling.
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Affiliation(s)
- Di Wu
- Institute of Reproductive Medicine, School of Medicine, Nantong University, Nantong, 226001, China
| | - Faheem Ahmed Khan
- Research Center for Animal Husbandry, National Research and Innovation Agency, Jakarta Pusat, 10340, Indonesia
| | - Kejia Zhang
- Institute of Reproductive Medicine, School of Medicine, Nantong University, Nantong, 226001, China
| | | | - Windu Negara
- Research Center for Animal Husbandry, National Research and Innovation Agency, Jakarta Pusat, 10340, Indonesia
| | - Kaifeng Guan
- School of Advanced Agricultural Sciences, Peking University, Beijing, 100871, China.
| | - Fei Sun
- Institute of Reproductive Medicine, School of Medicine, Nantong University, Nantong, 226001, China.
| | - Chunjie Huang
- Institute of Reproductive Medicine, School of Medicine, Nantong University, Nantong, 226001, China.
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4
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Liu N, Kawahira N, Nakashima Y, Nakano H, Iwase A, Uchijima Y, Wang M, Wu SM, Minamisawa S, Kurihara H, Nakano A. Notch and retinoic acid signals regulate macrophage formation from endocardium downstream of Nkx2-5. Nat Commun 2023; 14:5398. [PMID: 37669937 PMCID: PMC10480477 DOI: 10.1038/s41467-023-41039-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Accepted: 08/15/2023] [Indexed: 09/07/2023] Open
Abstract
Hematopoietic progenitors are enriched in the endocardial cushion and contribute, in a Nkx2-5-dependent manner, to tissue macrophages required for the remodeling of cardiac valves and septa. However, little is known about the molecular mechanism of endocardial-hematopoietic transition. In the current study, we identified the regulatory network of endocardial hematopoiesis. Signal network analysis from scRNA-seq datasets revealed that genes in Notch and retinoic acid (RA) signaling are significantly downregulated in Nkx2-5-null endocardial cells. In vivo and ex vivo analyses validate that the Nkx2-5-Notch axis is essential for the generation of both hemogenic and cushion endocardial cells, and the suppression of RA signaling via Dhrs3 expression plays important roles in further differentiation into macrophages. Genetic ablation study revealed that these macrophages are essential in cardiac valve remodeling. In summary, the study demonstrates that the Nkx2-5/Notch/RA signaling plays a pivotal role in macrophage differentiation from hematopoietic progenitors.
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Affiliation(s)
- Norika Liu
- The Jikei University School of Medicine, Department of Cell Physiology, Tokyo, Japan
- University of California Los Angeles, Department of Molecular Cell and Developmental Biology, Los Angeles, USA
| | - Naofumi Kawahira
- University of California Los Angeles, Department of Molecular Cell and Developmental Biology, Los Angeles, USA
| | | | - Haruko Nakano
- University of California Los Angeles, Department of Molecular Cell and Developmental Biology, Los Angeles, USA
| | - Akiyasu Iwase
- University of Tokyo, Department of Physiological Chemistry and Metabolism, Tokyo, Japan
| | - Yasunobu Uchijima
- University of Tokyo, Department of Physiological Chemistry and Metabolism, Tokyo, Japan
| | - Mei Wang
- The Jikei University School of Medicine, Department of Cell Physiology, Tokyo, Japan
| | - Sean M Wu
- Stanford University, Cardiovascular Institute and Division of Cardiovascular Medicine, Department of Medicine, Stanford, USA
| | - Susumu Minamisawa
- The Jikei University School of Medicine, Department of Cell Physiology, Tokyo, Japan
| | - Hiroki Kurihara
- University of Tokyo, Department of Physiological Chemistry and Metabolism, Tokyo, Japan
| | - Atsushi Nakano
- The Jikei University School of Medicine, Department of Cell Physiology, Tokyo, Japan.
- University of California Los Angeles, Department of Molecular Cell and Developmental Biology, Los Angeles, USA.
- University of California Los Angeles, David Geffen Department of Medicine, Division of Cardiology, Los Angeles, USA.
- Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research, University of California, Los Angeles, Los Angeles, USA.
- Molecular Biology Institute, University of California, Los Angeles, Los Angeles, USA.
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5
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Wilken MB, Fonar G, Nations C, Pavani G, Tsao V, Garifallou J, Tober J, Bennett L, Maguire JA, Gagne A, Okoli N, Gadue P, Chou ST, Speck NA, French DL, Thom CS. Tropomyosin 1 deficiency facilitates cell state transitions to enhance hemogenic endothelial cell specification during hematopoiesis. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.09.01.555861. [PMID: 37693628 PMCID: PMC10491315 DOI: 10.1101/2023.09.01.555861] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/12/2023]
Abstract
Tropomyosins coat actin filaments and impact actin-related signaling and cell morphogenesis. Genome-wide association studies have linked Tropomyosin 1 (TPM1) with human blood trait variation. Prior work suggested that TPM1 regulated blood cell formation in vitro, but it was unclear how or when TPM1 affected hematopoiesis. Using gene-edited induced pluripotent stem cell (iPSC) model systems, TPM1 knockout was found to augment developmental cell state transitions, as well as TNFα and GTPase signaling pathways, to promote hemogenic endothelial (HE) cell specification and hematopoietic progenitor cell (HPC) production. Single-cell analyses showed decreased TPM1 expression during human HE specification, suggesting that TPM1 regulated in vivo hematopoiesis via similar mechanisms. Indeed, analyses of a TPM1 gene trap mouse model showed that TPM1 deficiency enhanced the formation of HE during embryogenesis. These findings illuminate novel effects of TPM1 on developmental hematopoiesis.
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Affiliation(s)
- Madison B Wilken
- Division of Neonatology, Children's Hospital of Philadelphia, Philadelphia, PA
| | - Gennadiy Fonar
- Division of Neonatology, Children's Hospital of Philadelphia, Philadelphia, PA
| | - Catriana Nations
- Center for Cellular and Molecular Therapeutics, Children's Hospital of Philadelphia, Philadelphia, PA
- Department of Pathology and Laboratory Medicine, Children's Hospital of Philadelphia, Philadelphia, PA
| | - Giulia Pavani
- Center for Cellular and Molecular Therapeutics, Children's Hospital of Philadelphia, Philadelphia, PA
- Department of Pathology and Laboratory Medicine, Children's Hospital of Philadelphia, Philadelphia, PA
| | - Victor Tsao
- Division of Neonatology, Children's Hospital of Philadelphia, Philadelphia, PA
- School of Arts and Sciences, University of Pennsylvania, Philadelphia, PA
| | - James Garifallou
- Division of Neonatology, Children's Hospital of Philadelphia, Philadelphia, PA
| | - Joanna Tober
- Department of Cell and Developmental Biology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA
| | - Laura Bennett
- Department of Cell and Developmental Biology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA
| | - Jean Ann Maguire
- Center for Cellular and Molecular Therapeutics, Children's Hospital of Philadelphia, Philadelphia, PA
| | - Alyssa Gagne
- Center for Cellular and Molecular Therapeutics, Children's Hospital of Philadelphia, Philadelphia, PA
| | - Nkemdilim Okoli
- Division of Neonatology, Children's Hospital of Philadelphia, Philadelphia, PA
- School of Arts and Sciences, University of Pennsylvania, Philadelphia, PA
| | - Paul Gadue
- Center for Cellular and Molecular Therapeutics, Children's Hospital of Philadelphia, Philadelphia, PA
- Department of Pathology and Laboratory Medicine, Children's Hospital of Philadelphia, Philadelphia, PA
| | - Stella T Chou
- Division of Hematology, Children's Hospital of Philadelphia, Philadelphia, PA
| | - Nancy A Speck
- Department of Cell and Developmental Biology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA
| | - Deborah L French
- Center for Cellular and Molecular Therapeutics, Children's Hospital of Philadelphia, Philadelphia, PA
- Department of Pathology and Laboratory Medicine, Children's Hospital of Philadelphia, Philadelphia, PA
| | - Christopher S Thom
- Division of Neonatology, Children's Hospital of Philadelphia, Philadelphia, PA
- Department of Pediatrics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA
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6
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Xia X, Li G, Dong Q, Wang JW, Kim JE. Endothelial progenitor cells as an emerging cardiovascular risk factor in the field of food and nutrition research: advances and challenges. Crit Rev Food Sci Nutr 2023:1-18. [PMID: 37599627 DOI: 10.1080/10408398.2023.2248506] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/22/2023]
Abstract
Dietary modifications can help prevent many cardiovascular disease (CVD) events. Endothelial progenitor cells (EPCs) actively contribute to cardiovascular system maintenance and could function as surrogate markers for evaluating improvement in cardiovascular health resulting from nutritional interventions. This review summarizes the latest research progress on the impact of food and nutrients on EPCs, drawing on evidence from human, animal, and in vitro studies. Additionally, current trends and challenges faced in the field are highlighted. Findings from studies examining cells as EPCs are generally consistent, demonstrating that a healthy diet, such as the Mediterranean diet or a supervised diet for overweight people, specific foods like olive oil, fruit, vegetables, red wine, tea, chia, and nutraceuticals, and certain nutrients such as polyphenols, unsaturated fats, inorganic nitrate, and vitamins, generally promote higher EPC numbers and enhanced EPC function. Conversely, an unhealthy diet, such as one high in sugar substitutes, salt, or fructose, impairs EPC function. Research on outgrowth EPCs has revealed that various pathways are involved in the modulation effects of food and nutrients. The potential of EPCs as a biomarker for assessing the effectiveness of nutritional interventions in preventing CVDs is immense, while further clarification on definition and characterization of EPCs is required.
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Affiliation(s)
- Xuejuan Xia
- School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai, China
- Department of Food Science & Technology, Faculty of Science, National University of Singapore, Singapore
| | - Guannan Li
- State Key Laboratory of Silkworm Genome Biology, College of Sericulture, Textile and Biomass, Southwest University, Chongqing, China
| | - Qingli Dong
- School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai, China
| | - Jiong-Wei Wang
- Department of Surgery, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
- Cardiovascular Research Institute, National University Health Systems, Centre for Translational Medicine, Singapore
- Nanomedicine Translational Research Programme, Centre for NanoMedicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Jung Eun Kim
- Department of Food Science & Technology, Faculty of Science, National University of Singapore, Singapore
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7
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Wu Y, Paila U, Genet G, Hirschi KK. MicroRNA-223 limits murine hemogenic endothelial cell specification and myelopoiesis. Dev Cell 2023; 58:1237-1249.e5. [PMID: 37295435 PMCID: PMC10424725 DOI: 10.1016/j.devcel.2023.05.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2022] [Revised: 01/04/2023] [Accepted: 05/17/2023] [Indexed: 06/12/2023]
Abstract
Embryonic definitive hematopoiesis generates hematopoietic stem and progenitor cells (HSPCs) that are essential for the establishment and maintenance of the adult blood system. This process requires the specification of a subset of vascular endothelial cells (ECs) to become hemogenic ECs and to have subsequent endothelial-to-hematopoietic transition (EHT), and the underlying mechanisms are largely undefined. We identified microRNA (miR)-223 as a negative regulator of murine hemogenic EC specification and EHT. Loss of miR-223 leads to increased formation of hemogenic ECs and HSPCs, which is associated with increased retinoic acid signaling, which we previously showed as promoting hemogenic EC specification. Additionally, loss of miR-223 leads to the generation of myeloid-biased hemogenic ECs and HSPCs, which results in an increased proportion of myeloid cells throughout embryonic and postnatal life. Our findings identify a negative regulator of hemogenic EC specification and highlight the importance of this process for the establishment of the adult blood system.
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Affiliation(s)
- Yinyu Wu
- Departments of Genetics, Yale Cardiovascular Research Center, Vascular Biology and Therapeutics Program, Yale Stem Cell Center, Yale University School of Medicine, New Haven, CT 06510, USA; Department of Cell Biology, Cardiovascular Research Center, University of Virginia, Charlottesville, VA 22908, USA
| | - Umadevi Paila
- Department of Cell Biology, Cardiovascular Research Center, University of Virginia, Charlottesville, VA 22908, USA
| | - Gael Genet
- Department of Cell Biology, Cardiovascular Research Center, University of Virginia, Charlottesville, VA 22908, USA
| | - Karen K Hirschi
- Departments of Genetics, Yale Cardiovascular Research Center, Vascular Biology and Therapeutics Program, Yale Stem Cell Center, Yale University School of Medicine, New Haven, CT 06510, USA; Department of Cell Biology, Cardiovascular Research Center, University of Virginia, Charlottesville, VA 22908, USA.
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8
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Tacconi C, Plein A, Colletto C, Villa E, Denti L, Barone C, Javanmardi Y, Moeendarbary E, Azzoni E, Fantin A, Ruhrberg C. KIT is dispensable for physiological organ vascularisation in the embryo. Angiogenesis 2022; 25:343-353. [PMID: 35416527 PMCID: PMC9249691 DOI: 10.1007/s10456-022-09837-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2021] [Accepted: 03/25/2022] [Indexed: 11/08/2022]
Abstract
Blood vessels form vast networks in all vertebrate organs to sustain tissue growth, repair and homeostatic metabolism, but they also contribute to a range of diseases with neovascularisation. It is, therefore, important to define the molecular mechanisms that underpin blood vessel growth. The receptor tyrosine kinase KIT is required for the normal expansion of hematopoietic progenitors that arise during embryogenesis from hemogenic endothelium in the yolk sac and dorsal aorta. Additionally, KIT has been reported to be expressed in endothelial cells during embryonic brain vascularisation and has been implicated in pathological angiogenesis. However, it is neither known whether KIT expression is widespread in normal organ endothelium nor whether it promotes blood vessel growth in developing organs. Here, we have used single-cell analyses to show that KIT is expressed in endothelial cell subsets of several organs, both in the adult and in the developing embryo. Knockout mouse analyses revealed that KIT is dispensable for vascularisation of growing organs in the midgestation embryo, including the lung, liver and brain. By contrast, vascular changes emerged during late-stage embryogenesis in these organs from KIT-deficient embryos, concurrent with severe erythrocyte deficiency and growth retardation. These findings suggest that KIT is not required for developmental tissue vascularisation in physiological conditions, but that KIT deficiency causes foetal anaemia at late gestation and thereby pathological vascular remodelling.
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Affiliation(s)
- Carlotta Tacconi
- Department of Biosciences, University of Milan, Via G. Celoria 26, 20133, Milan, Italy
| | - Alice Plein
- UCL Institute of Ophthalmology, University College London, 11-43 Bath Street, London, EC1V 9EL, UK
| | - Chiara Colletto
- Department of Biosciences, University of Milan, Via G. Celoria 26, 20133, Milan, Italy
| | - Emanuela Villa
- Department of Biosciences, University of Milan, Via G. Celoria 26, 20133, Milan, Italy
- Department of Experimental Oncology, IEO, European Institute of Oncology IRCCS, Milan, Italy
| | - Laura Denti
- UCL Institute of Ophthalmology, University College London, 11-43 Bath Street, London, EC1V 9EL, UK
| | - Cristiana Barone
- School of Medicine and Surgery, University of Milano-Bicocca, Monza, Italy
| | - Yousef Javanmardi
- UCL Department of Mechanical Engineering, University College London, London, UK
| | - Emad Moeendarbary
- UCL Department of Mechanical Engineering, University College London, London, UK
| | - Emanuele Azzoni
- School of Medicine and Surgery, University of Milano-Bicocca, Monza, Italy
| | - Alessandro Fantin
- Department of Biosciences, University of Milan, Via G. Celoria 26, 20133, Milan, Italy.
- UCL Institute of Ophthalmology, University College London, 11-43 Bath Street, London, EC1V 9EL, UK.
| | - Christiana Ruhrberg
- UCL Institute of Ophthalmology, University College London, 11-43 Bath Street, London, EC1V 9EL, UK.
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9
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Abstract
Formation of the vasculature is a critical step within the developing embryo and its disruption causes early embryonic lethality. This complex process is driven by a cascade of signaling events that controls differentiation of mesodermal progenitors into primordial endothelial cells and their further specification into distinct subtypes (arterial, venous, hemogenic) that are needed to generate a blood circulatory network. Hemogenic endothelial cells give rise to hematopoietic stem and progenitor cells that generate all blood cells in the body during embryogenesis and postnatally. We focus our discussion on the regulation of endothelial cell differentiation, and subsequent hemogenic specification, and highlight many of the signaling pathways involved in these processes, which are conserved across vertebrates. Gaining a better understanding of the regulation of these processes will yield insights needed to optimize the treatment of vascular and hematopoietic disease and generate human stem cell-derived vascular and hematopoietic cells for tissue engineering and regenerative medicine.
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Affiliation(s)
- Jordon W Aragon
- Department of Cell Biology, University of Virginia School of Medicine, Charlottesville, Virginia 22903, USA
- Cardiovascular Research Center, University of Virginia School of Medicine, Charlottesville, Virginia 22908, USA
| | - Karen K Hirschi
- Department of Cell Biology, University of Virginia School of Medicine, Charlottesville, Virginia 22903, USA
- Cardiovascular Research Center, University of Virginia School of Medicine, Charlottesville, Virginia 22908, USA
- Departments of Medicine and Genetics, Yale University School of Medicine, Yale Cardiovascular Research Center, New Haven, Connecticut 06520, USA
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10
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Integrative epigenomic and transcriptomic analysis reveals the requirement of JUNB for hematopoietic fate induction. Nat Commun 2022; 13:3131. [PMID: 35668082 PMCID: PMC9170695 DOI: 10.1038/s41467-022-30789-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Accepted: 05/18/2022] [Indexed: 11/08/2022] Open
Abstract
Human pluripotent stem cell differentiation towards hematopoietic progenitor cell can serve as an in vitro model for human embryonic hematopoiesis, but the dynamic change of epigenome and transcriptome remains elusive. Here, we systematically profile the chromatin accessibility, H3K4me3 and H3K27me3 modifications, and the transcriptome of intermediate progenitors during hematopoietic progenitor cell differentiation in vitro. The integrative analyses reveal sequential opening-up of regions for the binding of hematopoietic transcription factors and stepwise epigenetic reprogramming of bivalent genes. Single-cell analysis of cells undergoing the endothelial-to-hematopoietic transition and comparison with in vivo hemogenic endothelial cells reveal important features of in vitro and in vivo hematopoiesis. We find that JUNB is an essential regulator for hemogenic endothelium specialization and endothelial-to-hematopoietic transition. These studies depict an epigenomic roadmap from human pluripotent stem cells to hematopoietic progenitor cells, which may pave the way to generate hematopoietic progenitor cells with improved developmental potentials.
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11
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Luff SA, Creamer JP, Valsoni S, Dege C, Scarfò R, Dacunto A, Cascione S, Randolph LN, Cavalca E, Merelli I, Morris SA, Ditadi A, Sturgeon CM. Identification of a retinoic acid-dependent haemogenic endothelial progenitor from human pluripotent stem cells. Nat Cell Biol 2022; 24:616-624. [PMID: 35484246 PMCID: PMC9109599 DOI: 10.1038/s41556-022-00898-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2021] [Accepted: 03/16/2022] [Indexed: 01/12/2023]
Abstract
The generation of haematopoietic stem cells (HSCs) from human pluripotent stem cells (hPSCs) is a major goal for regenerative medicine. During embryonic development, HSCs derive from haemogenic endothelium (HE) in a NOTCH- and retinoic acid (RA)-dependent manner. Although a WNT-dependent (WNTd) patterning of nascent hPSC mesoderm specifies clonally multipotent intra-embryonic-like HOXA+ definitive HE, this HE is functionally unresponsive to RA. Here we show that WNTd mesoderm, before HE specification, is actually composed of two distinct KDR+ CD34neg populations. CXCR4negCYP26A1+ mesoderm gives rise to HOXA+ multilineage definitive HE in an RA-independent manner, whereas CXCR4+ ALDH1A2+ mesoderm gives rise to HOXA+ multilineage definitive HE in a stage-specific, RA-dependent manner. Furthermore, both RA-independent (RAi) and RA-dependent (RAd) HE harbour transcriptional similarity to distinct populations found in the early human embryo, including HSC-competent HE. This revised model of human haematopoietic development provides essential resolution to the regulation and origins of the multiple waves of haematopoiesis. These insights provide the basis for the generation of specific haematopoietic populations, including the de novo specification of HSCs.
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Affiliation(s)
- Stephanie A Luff
- Black Family Stem Cell Institute, Icahn School of Medicine at Mount Sinai School of Medicine, New York, NY, USA
- Department of Cell, Developmental and Regenerative Biology, Icahn School of Medicine at Mount Sinai, New York, NY, USA
- Department of Medicine, Division of Hematology, Washington University School of Medicine, St Louis, MO, USA
| | - J Philip Creamer
- Department of Medicine, Division of Hematology, Washington University School of Medicine, St Louis, MO, USA
| | - Sara Valsoni
- San Raffaele Telethon Institute for Gene Therapy, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Carissa Dege
- Department of Medicine, Division of Hematology, Washington University School of Medicine, St Louis, MO, USA
| | - Rebecca Scarfò
- San Raffaele Telethon Institute for Gene Therapy, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Analisa Dacunto
- Black Family Stem Cell Institute, Icahn School of Medicine at Mount Sinai School of Medicine, New York, NY, USA
- Department of Cell, Developmental and Regenerative Biology, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Sara Cascione
- San Raffaele Telethon Institute for Gene Therapy, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Lauren N Randolph
- San Raffaele Telethon Institute for Gene Therapy, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Eleonora Cavalca
- San Raffaele Telethon Institute for Gene Therapy, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Ivan Merelli
- San Raffaele Telethon Institute for Gene Therapy, IRCCS San Raffaele Scientific Institute, Milan, Italy
- Institute for Biomedical Technologies, National Research Council, Milan, Italy
| | - Samantha A Morris
- Department of Developmental Biology, Washington University in Saint Louis, St Louis, MO, USA
- Department of Genetics, Washington University in Saint Louis, St Louis, MO, USA
| | - Andrea Ditadi
- San Raffaele Telethon Institute for Gene Therapy, IRCCS San Raffaele Scientific Institute, Milan, Italy.
| | - Christopher M Sturgeon
- Black Family Stem Cell Institute, Icahn School of Medicine at Mount Sinai School of Medicine, New York, NY, USA.
- Department of Cell, Developmental and Regenerative Biology, Icahn School of Medicine at Mount Sinai, New York, NY, USA.
- Department of Medicine, Division of Hematology, Washington University School of Medicine, St Louis, MO, USA.
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12
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Role of Nuclear Receptors in Controlling Erythropoiesis. Int J Mol Sci 2022; 23:ijms23052800. [PMID: 35269942 PMCID: PMC8911257 DOI: 10.3390/ijms23052800] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2022] [Revised: 02/25/2022] [Accepted: 02/27/2022] [Indexed: 02/04/2023] Open
Abstract
Nuclear receptors (NRs), are a wide family of ligand-regulated transcription factors sharing a common modular structure composed by an N-terminal domain and a ligand-binding domain connected by a short hinge linker to a DNA-binding domain. NRs are involved in many physiological processes, including metabolism, reproduction and development. Most of them respond to small lipophilic ligands, such as steroids, retinoids, and phospholipids, which act as conformational switches. Some NRs are still "orphan" and the search for their ligands is still ongoing. Upon DNA binding, NRs can act both as transcriptional activators or repressors of their target genes. Theoretically, the possibility to modulate NRs activity with small molecules makes them ideal therapeutic targets, although the complexity of their signaling makes drug design challenging. In this review, we discuss the role of NRs in erythropoiesis, in both homeostatic and stress conditions. This knowledge is important in view of modulating red blood cells production in disease conditions, such as anemias, and for the expansion of erythroid cells in culture for research purposes and for reaching the long-term goal of cultured blood for transfusion.
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13
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Kolesnichenko OA, Whitsett JA, Kalin TV, Kalinichenko VV. Therapeutic Potential of Endothelial Progenitor Cells in Pulmonary Diseases. Am J Respir Cell Mol Biol 2021; 65:473-488. [PMID: 34293272 DOI: 10.1165/rcmb.2021-0152tr] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
Compromised alveolar development and pulmonary vascular remodeling are hallmarks of pediatric lung diseases such as bronchopulmonary dysplasia (BPD) and alveolar capillary dysplasia with misalignment of pulmonary veins (ACDMPV). Although advances in surfactant therapy, corticosteroids, and anti-inflammatory drugs have improved clinical management of preterm infants, still those who suffer with severe vascular complications lack viable treatment options. Paucity of the alveolar capillary network in ACDMPV causes respiratory distress and leads to mortality in a vast majority of ACDMPV infants. The discovery of endothelial progenitor cells (EPCs) in 1997 brought forth the paradigm of postnatal vasculogenesis and hope for promoting vascularization in fragile patient populations, such as those with BPD and ACDMPV. The identification of diverse EPC populations, both hematopoietic and nonhematopoietic in origin, provided a need to identify progenitor cell selective markers which are linked to progenitor properties needed to develop cell-based therapies. Focusing to the future potential of EPCs for regenerative medicine, this review will discuss various aspects of EPC biology, beginning with the identification of hematopoietic, nonhematopoietic, and tissue-resident EPC populations. We will review knowledge related to cell surface markers, signature gene expression, key transcriptional regulators, and will explore the translational potential of EPCs for cell-based therapy for BPD and ACDMPV. The ability to produce pulmonary EPCs from patient-derived induced pluripotent stem cells (iPSCs) in vitro, holds promise for restoring vascular growth and function in the lungs of patients with pediatric pulmonary disorders.
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Affiliation(s)
- Olena A Kolesnichenko
- Cincinnati Children's Hospital Medical Center, 2518, Cincinnati, Ohio, United States
| | - Jeffrey A Whitsett
- The Perinatal Institute and Section of Neonatology, Perinatal and Pulmonary Biology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, United States
| | - Tanya V Kalin
- Cincinnati Children\'s Hospital Medical Center, 2518, Pediatrics, Cincinnati, Ohio, United States
| | - Vladimir V Kalinichenko
- Cincinnati Children's Hospital Medical Center, Pediatrics, Division of Pulmonary Biology, Cincinnati, Ohio, United States;
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14
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Greenspan LJ, Weinstein BM. To be or not to be: endothelial cell plasticity in development, repair, and disease. Angiogenesis 2021; 24:251-269. [PMID: 33449300 PMCID: PMC8205957 DOI: 10.1007/s10456-020-09761-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2020] [Accepted: 12/14/2020] [Indexed: 02/08/2023]
Abstract
Endothelial cells display an extraordinary plasticity both during development and throughout adult life. During early development, endothelial cells assume arterial, venous, or lymphatic identity, while selected endothelial cells undergo additional fate changes to become hematopoietic progenitor, cardiac valve, and other cell types. Adult endothelial cells are some of the longest-lived cells in the body and their participation as stable components of the vascular wall is critical for the proper function of both the circulatory and lymphatic systems, yet these cells also display a remarkable capacity to undergo changes in their differentiated identity during injury, disease, and even normal physiological changes in the vasculature. Here, we discuss how endothelial cells become specified during development as arterial, venous, or lymphatic endothelial cells or convert into hematopoietic stem and progenitor cells or cardiac valve cells. We compare findings from in vitro and in vivo studies with a focus on the zebrafish as a valuable model for exploring the signaling pathways and environmental cues that drive these transitions. We also discuss how endothelial plasticity can aid in revascularization and repair of tissue after damage- but may have detrimental consequences under disease conditions. By better understanding endothelial plasticity and the mechanisms underlying endothelial fate transitions, we can begin to explore new therapeutic avenues.
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Affiliation(s)
- Leah J Greenspan
- Division of Developmental Biology, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Brant M Weinstein
- Division of Developmental Biology, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD, 20892, USA.
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15
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Nelson EA, Qiu J, Chavkin NW, Hirschi KK. Directed Differentiation of Hemogenic Endothelial Cells from Human Pluripotent Stem Cells. J Vis Exp 2021:10.3791/62391. [PMID: 33871448 PMCID: PMC8675434 DOI: 10.3791/62391] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
Abstract
Blood vessels are ubiquitously distributed within all tissues of the body and perform diverse functions. Thus, derivation of mature vascular endothelial cells, which line blood vessel lumens, from human pluripotent stem cells is crucial for a multitude of tissue engineering and regeneration applications. In vivo, primordial endothelial cells are derived from the mesodermal lineage and are specified toward specific subtypes, including arterial, venous, capillary, hemogenic, and lymphatic. Hemogenic endothelial cells are of particular interest because, during development, they give rise to hematopoietic stem and progenitor cells, which then generate all blood lineages throughout life. Thus, creating a system to generate hemogenic endothelial cells in vitro would provide an opportunity to study endothelial-to-hematopoietic transition, and may lead to ex vivo production of human blood products and reduced reliance on human donors. While several protocols exist for the derivation of progenitor and primordial endothelial cells, generation of well-characterized hemogenic endothelial cells from human stem cells has not been described. Here, a method for the derivation of hemogenic endothelial cells from human embryonic stem cells in approximately 1 week is presented: a differentiation protocol with primitive streak cells formed in response to GSK3β inhibitor (CHIR99021), then mesoderm lineage induction mediated by bFGF, followed by primordial endothelial cell development promoted by BMP4 and VEGF-A, and finally hemogenic endothelial cell specification induced by retinoic acid. This protocol yields a well-defined population of hemogenic endothelial cells that can be used to further understand their molecular regulation and endothelial-to-hematopoietic transition, which has the potential to be applied to downstream therapeutic applications.
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Affiliation(s)
- Elizabeth A Nelson
- Department of Cell Biology, University of Virginia; Cardiovascular Research Center, University of Virginia
| | - Jingyao Qiu
- Department of Medicine, Yale University School of Medicine; Department of Genetics, Yale University School of Medicine
| | - Nicholas W Chavkin
- Department of Cell Biology, University of Virginia; Cardiovascular Research Center, University of Virginia
| | - Karen K Hirschi
- Department of Cell Biology, University of Virginia; Cardiovascular Research Center, University of Virginia; Department of Medicine, Yale University School of Medicine; Department of Genetics, Yale University School of Medicine; Yale Cardiovascular Research Center, Yale University School of Medicine;
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16
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Lange L, Morgan M, Schambach A. The hemogenic endothelium: a critical source for the generation of PSC-derived hematopoietic stem and progenitor cells. Cell Mol Life Sci 2021; 78:4143-4160. [PMID: 33559689 PMCID: PMC8164610 DOI: 10.1007/s00018-021-03777-y] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2020] [Revised: 12/16/2020] [Accepted: 01/15/2021] [Indexed: 12/02/2022]
Abstract
In vitro generation of hematopoietic cells and especially hematopoietic stem cells (HSCs) from human pluripotent stem cells (PSCs) are subject to intensive research in recent decades, as these cells hold great potential for regenerative medicine and autologous cell replacement therapies. Despite many attempts, in vitro, de novo generation of bona fide HSCs remains challenging, and we are still far away from their clinical use, due to insufficient functionality and quantity of the produced HSCs. The challenges of generating PSC-derived HSCs are already apparent in early stages of hemato-endothelial specification with the limitation of recapitulating complex, dynamic processes of embryonic hematopoietic ontogeny in vitro. Further, these current shortcomings imply the incompleteness of our understanding of human ontogenetic processes from embryonic mesoderm over an intermediate, specialized hemogenic endothelium (HE) to their immediate progeny, the HSCs. In this review, we examine the recent investigations of hemato-endothelial ontogeny and recently reported progress for the conversion of PSCs and other promising somatic cell types towards HSCs with the focus on the crucial and inevitable role of the HE to achieve the long-standing goal—to generate therapeutically applicable PSC-derived HSCs in vitro.
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Affiliation(s)
- Lucas Lange
- Institute of Experimental Hematology, Hannover Medical School, 30625, Hannover, Germany.,REBIRTH, Research Center for Translational Regenerative Medicine, Hannover Medical School, 30625, Hannover, Germany
| | - Michael Morgan
- Institute of Experimental Hematology, Hannover Medical School, 30625, Hannover, Germany.,REBIRTH, Research Center for Translational Regenerative Medicine, Hannover Medical School, 30625, Hannover, Germany
| | - Axel Schambach
- Institute of Experimental Hematology, Hannover Medical School, 30625, Hannover, Germany. .,REBIRTH, Research Center for Translational Regenerative Medicine, Hannover Medical School, 30625, Hannover, Germany. .,Division of Hematology/Oncology, Boston Children's Hospital, Harvard Medical School, Boston, MA, 02115, USA.
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17
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Fantin A, Tacconi C, Villa E, Ceccacci E, Denti L, Ruhrberg C. KIT Is Required for Fetal Liver Hematopoiesis. Front Cell Dev Biol 2021; 9:648630. [PMID: 34395414 PMCID: PMC8358609 DOI: 10.3389/fcell.2021.648630] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2021] [Accepted: 06/23/2021] [Indexed: 01/22/2023] Open
Abstract
In the mouse embryo, endothelial cell (EC) progenitors almost concomitantly give rise to the first blood vessels in the yolk sac and the large vessels of the embryo proper. Although the first blood cells form in the yolk sac before blood vessels have assembled, consecutive waves of hematopoietic progenitors subsequently bud from hemogenic endothelium located within the wall of yolk sac and large intraembryonic vessels in a process termed endothelial-to-hematopoietic transition (endoHT). The receptor tyrosine kinase KIT is required for late embryonic erythropoiesis, but KIT is also expressed in hematopoietic progenitors that arise via endoHT from yolk sac hemogenic endothelium to generate early, transient hematopoietic waves. However, it remains unclear whether KIT has essential roles in early hematopoiesis. Here, we have combined single-cell expression studies with the analysis of knockout mice to show that KIT is dispensable for yolk sac endoHT but required for transient definitive hematopoiesis in the fetal liver.
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Affiliation(s)
- Alessandro Fantin
- UCL Institute of Ophthalmology, University College London, London, United Kingdom
- Department of Biosciences, University of Milan, Milan, Italy
- *Correspondence: Alessandro Fantin,
| | | | - Emanuela Villa
- Department of Biosciences, University of Milan, Milan, Italy
| | - Elena Ceccacci
- Department of Experimental Oncology, IEO, European Institute of Oncology IRCCS, Milan, Italy
| | - Laura Denti
- UCL Institute of Ophthalmology, University College London, London, United Kingdom
| | - Christiana Ruhrberg
- UCL Institute of Ophthalmology, University College London, London, United Kingdom
- Christiana Ruhrberg,
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18
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Elsaid R, Soares-da-Silva F, Peixoto M, Amiri D, Mackowski N, Pereira P, Bandeira A, Cumano A. Hematopoiesis: A Layered Organization Across Chordate Species. Front Cell Dev Biol 2020; 8:606642. [PMID: 33392196 PMCID: PMC7772317 DOI: 10.3389/fcell.2020.606642] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Accepted: 11/19/2020] [Indexed: 12/12/2022] Open
Abstract
The identification of distinct waves of progenitors during development, each corresponding to a specific time, space, and function, provided the basis for the concept of a “layered” organization in development. The concept of a layered hematopoiesis was established by classical embryology studies in birds and amphibians. Recent progress in generating reliable lineage tracing models together with transcriptional and proteomic analyses in single cells revealed that, also in mammals, the hematopoietic system evolves in successive waves of progenitors with distinct properties and fate. During embryogenesis, sequential waves of hematopoietic progenitors emerge at different anatomic sites, generating specific cell types with distinct functions and tissue homing capacities. The first progenitors originate in the yolk sac before the emergence of hematopoietic stem cells, some giving rise to progenies that persist throughout life. Hematopoietic stem cell-derived cells that protect organisms against environmental pathogens follow the same sequential strategy, with subsets of lymphoid cells being only produced during embryonic development. Growing evidence indicates that fetal immune cells contribute to the proper development of the organs they seed and later ensure life-long tissue homeostasis and immune protection. They include macrophages, mast cells, some γδ T cells, B-1 B cells, and innate lymphoid cells, which have “non-redundant” functions, and early perturbations in their development or function affect immunity in the adult. These observations challenged the view that all hematopoietic cells found in the adult result from constant and monotonous production from bone marrow-resident hematopoietic stem cells. In this review, we evaluate evidence for a layered hematopoietic system across species. We discuss mechanisms and selective pressures leading to the temporal generation of different cell types. We elaborate on the consequences of disturbing fetal immune cells on tissue homeostasis and immune development later in life.
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Affiliation(s)
- Ramy Elsaid
- Unit of Lymphocytes and Immunity, Immunology Department, Institut Pasteur, Paris, France.,INSERM U1223, Paris, France.,Université de Paris, Céllule Pasteur, Paris, France
| | - Francisca Soares-da-Silva
- Unit of Lymphocytes and Immunity, Immunology Department, Institut Pasteur, Paris, France.,INSERM U1223, Paris, France.,Université de Paris, Céllule Pasteur, Paris, France.,I3S-Instituto de Investigação e Inovação em Saúde and INEB-Instituto Nacional de Engenharia Biomédica, Universidade do Porto, Porto, Portugal.,Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Porto, Portugal.,Graduate Program in Areas of Basic and Applied Biology, Instituto de Ciências Biomeìdicas Abel Salazar, Universidade do Porto, Porto, Portugal
| | - Marcia Peixoto
- Unit of Lymphocytes and Immunity, Immunology Department, Institut Pasteur, Paris, France.,INSERM U1223, Paris, France.,Université de Paris, Céllule Pasteur, Paris, France.,I3S-Instituto de Investigação e Inovação em Saúde and INEB-Instituto Nacional de Engenharia Biomédica, Universidade do Porto, Porto, Portugal.,Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Porto, Portugal
| | - Dali Amiri
- Unit of Lymphocytes and Immunity, Immunology Department, Institut Pasteur, Paris, France.,INSERM U1223, Paris, France.,Université de Paris, Céllule Pasteur, Paris, France
| | - Nathan Mackowski
- Unit of Lymphocytes and Immunity, Immunology Department, Institut Pasteur, Paris, France.,INSERM U1223, Paris, France.,Université de Paris, Céllule Pasteur, Paris, France
| | - Pablo Pereira
- Unit of Lymphocytes and Immunity, Immunology Department, Institut Pasteur, Paris, France.,INSERM U1223, Paris, France.,Université de Paris, Céllule Pasteur, Paris, France
| | - Antonio Bandeira
- Unit of Lymphocytes and Immunity, Immunology Department, Institut Pasteur, Paris, France.,INSERM U1223, Paris, France.,Université de Paris, Céllule Pasteur, Paris, France
| | - Ana Cumano
- Unit of Lymphocytes and Immunity, Immunology Department, Institut Pasteur, Paris, France.,INSERM U1223, Paris, France.,Université de Paris, Céllule Pasteur, Paris, France
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19
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Qiu J, Nordling S, Vasavada HH, Butcher EC, Hirschi KK. Retinoic Acid Promotes Endothelial Cell Cycle Early G1 State to Enable Human Hemogenic Endothelial Cell Specification. Cell Rep 2020; 33:108465. [PMID: 33264627 PMCID: PMC8105879 DOI: 10.1016/j.celrep.2020.108465] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Revised: 08/27/2020] [Accepted: 11/10/2020] [Indexed: 12/01/2022] Open
Abstract
Development of blood-forming (hemogenic) endothelial cells that give rise to hematopoietic stem and progenitor cells (HSPCs) is critical during embryogenesis to generate the embryonic and postnatal hematopoietic system. We previously demonstrated that the specification of murine hemogenic endothelial cells is promoted by retinoic acid (RA) signaling and requires downstream endothelial cell cycle control. Whether this mechanism is conserved in human hemogenic endothelial cell specification is unknown. Here, we present a protocol to derive primordial endothelial cells from human embryonic stem cells and promote their specification toward hemogenic endothelial cells. Furthermore, we demonstrate that RA treatment significantly increases human hemogenic endothelial cell specification. That is, RA promotes endothelial cell cycle arrest to enable RA-induced instructive signals to upregulate the genes needed for hematopoietic transition. These insights provide guidance for the ex vivo generation of autologous human hemogenic endothelial cells that are needed to produce human HSPCs for regenerative medicine applications.
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Affiliation(s)
- Jingyao Qiu
- Department of Medicine, Yale University School of Medicine, New Haven, CT 06520, USA; Department of Genetics, Yale University School of Medicine, New Haven, CT 06520, USA; Yale Cardiovascular Research Center, Yale University School of Medicine, New Haven, CT 06520, USA; Vascular Biology and Therapeutics Program, Yale University School of Medicine, New Haven, CT 06520, USA; Yale Stem Cell Center, Yale University School of Medicine, New Haven, CT 06520, USA
| | - Sofia Nordling
- Laboratory of Immunology and Vascular Biology, Department of Pathology, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Hema H Vasavada
- Yale Cardiovascular Research Center, Yale University School of Medicine, New Haven, CT 06520, USA
| | - Eugene C Butcher
- Laboratory of Immunology and Vascular Biology, Department of Pathology, Stanford University School of Medicine, Stanford, CA 94305, USA; Palo Alto Veterans Institute for Research, VA Palo Alto Health Care System, Palo Alto, CA 94304, USA; The Center for Molecular Biology and Medicine, VA Palo Alto Health Care System, Palo Alto, CA 94304, USA
| | - Karen K Hirschi
- Department of Medicine, Yale University School of Medicine, New Haven, CT 06520, USA; Department of Genetics, Yale University School of Medicine, New Haven, CT 06520, USA; Yale Cardiovascular Research Center, Yale University School of Medicine, New Haven, CT 06520, USA; Vascular Biology and Therapeutics Program, Yale University School of Medicine, New Haven, CT 06520, USA; Yale Stem Cell Center, Yale University School of Medicine, New Haven, CT 06520, USA; Department of Cell Biology, University of Virginia, Charlottesville, VA 22908, USA.
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20
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Goncharov NV, Popova PI, Avdonin PP, Kudryavtsev IV, Serebryakova MK, Korf EA, Avdonin PV. Markers of Endothelial Cells in Normal and Pathological Conditions. BIOCHEMISTRY MOSCOW SUPPLEMENT SERIES A-MEMBRANE AND CELL BIOLOGY 2020; 14:167-183. [PMID: 33072245 PMCID: PMC7553370 DOI: 10.1134/s1990747819030140] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/28/2019] [Revised: 03/28/2019] [Accepted: 04/02/2019] [Indexed: 01/22/2023]
Abstract
Endothelial cells (ECs) line the blood vessels and lymphatic vessels, as well as heart chambers, forming the border between the tissues, on the one hand, and blood or lymph, on the other. Such a strategic position of the endothelium determines its most important functional role in the regulation of vascular tone, hemostasis, and inflammatory processes. The damaged endothelium can be both a cause and a consequence of many diseases. The state of the endothelium is indicated by the phenotype of these cells, represented mainly by (trans)membrane markers (surface antigens). This review defines endothelial markers, provides a list of them, and considers the mechanisms of their expression and the role of the endothelium in certain pathological conditions.
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Affiliation(s)
- N V Goncharov
- Sechenov Institute of Evolutionary Physiology and Biochemistry, Russian Academy of Sciences, 194223 St. Petersburg, Russia.,Research Institute of Hygiene, Occupational Pathology and Human Ecology, 188663 p.o. Kuz'molovskii, Leningrad oblast Russia
| | - P I Popova
- City Polyclinic no. 19, 142238 St. Petersburg, Russia
| | - P P Avdonin
- Koltzov Institute of Developmental Biology, Russian Academy of Sciences, 119334 Moscow, Russia
| | - I V Kudryavtsev
- Institute of Experimental Medicine, 197376 St. Petersburg, Russia.,Far-East Federal University, 690091 Vladivostok, Russia
| | - M K Serebryakova
- Institute of Experimental Medicine, 197376 St. Petersburg, Russia
| | - E A Korf
- Sechenov Institute of Evolutionary Physiology and Biochemistry, Russian Academy of Sciences, 194223 St. Petersburg, Russia
| | - P V Avdonin
- Koltzov Institute of Developmental Biology, Russian Academy of Sciences, 119334 Moscow, Russia
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21
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Abstract
Embryonic definitive hematopoiesis generates hematopoietic stem and progenitor cells (HSPCs) essential for establishment and maintenance of the adult blood system. This process requires the specification of a subset of vascular endothelial cells to become blood-forming, or hemogenic, and the subsequent endothelial-to-hematopoietic transition to generate HSPCs therefrom. The mechanisms that regulate these processes are under intensive investigation, as their recapitulation in vitro from human pluripotent stem cells has the potential to generate autologous HSPCs for clinical applications. In this review, we provide an overview of hemogenic endothelial cell development and highlight the molecular events that govern hemogenic specification of vascular endothelial cells and the generation of multilineage HSPCs from hemogenic endothelium. We also discuss the impact of hemogenic endothelial cell development on adult hematopoiesis.
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Affiliation(s)
- Yinyu Wu
- Departments of Medicine and Genetics, Yale Cardiovascular Research Center, Vascular Biology and Therapeutics Program, and Yale Stem Cell Center, Yale University School of Medicine, New Haven, Connecticut 06510, USA;
| | - Karen K Hirschi
- Departments of Medicine and Genetics, Yale Cardiovascular Research Center, Vascular Biology and Therapeutics Program, and Yale Stem Cell Center, Yale University School of Medicine, New Haven, Connecticut 06510, USA; .,Department of Cell Biology, University of Virginia, Charlottesville, Virginia 22908, USA;
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22
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Feng T, Gao Z, Kou S, Huang X, Jiang Z, Lu Z, Meng J, Lin CP, Zhang H. No Evidence for Erythro-Myeloid Progenitor-Derived Vascular Endothelial Cells in Multiple Organs. Circ Res 2020; 127:1221-1232. [PMID: 32791884 DOI: 10.1161/circresaha.120.317442] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
RATIONALE Endothelial cells are thought to emerge de novo from the mesoderm to form the entire circulatory system. Recently, erythro-myeloid progenitors (EMPs) have been proposed to be another remarkable developmental origin for blood vessels in multiple organs, including the hindbrain, liver, lung, and heart, as demonstrated by lineage tracing studies using different genetic tools. These observations challenge the current consensus that intraembryonic vessels are thought to expand solely by the proliferation of preexisting endothelial cells. Resolution of this controversy over the developmental origin of endothelial cells is crucial for developing future therapeutics for vessel-dependent organ repair and regeneration. OBJECTIVE To examine the contribution of EMPs to intraembryonic endothelial cells. METHODS AND RESULTS We first used a transgenic mouse expressing a tamoxifen-inducible Mer-iCre fusion protein driven by the Csf1r (colony stimulating factor 1 receptor) promoter. Genetic lineage tracing based on Csf1r-Mer-iCre-Mer showed no contribution of EMPs to brain endothelial cells identified by several markers. We also generated a knock-in mouse line by inserting an internal ribosome entry site-iCre cassette into the 3' untranslated region of Csf1r gene to further investigate the cellular fates of EMPs. Similarly, we did not find any Csf1r-ires-iCre traced endothelial cells in brain, liver, lung, or heart in development either. Additionally, we found that Kit (KIT proto-oncogene receptor tyrosine kinase) was expressed not only in EMPs but also in embryonic hindbrain endothelial cells. Therefore, Kit promoter-driven recombinase, such as Kit-CreER, is a flawed tool for lineage tracing when examining the contribution of EMPs to hindbrain endothelial cells. We also traced CD45 (protein tyrosine phosphatase receptor type C; Ptprc)+ circulating EMPs and did not find any CD45 lineage-derived endothelial cells during development. CONCLUSIONS Our study suggested that EMPs are not the origin of intraembryonic endothelial cells.
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Affiliation(s)
- Teng Feng
- School of Life Science and Technology, ShanghaiTech University, China (T.F., Z.G., S.K., X.H., Z.J., Z.L., J.M., C.-P.L., H.Z.).,University of Chinese Academy of Sciences, Beijing (T.F., Z.G., S.K., X.H., Z.J., Z.L.)
| | - Zibei Gao
- School of Life Science and Technology, ShanghaiTech University, China (T.F., Z.G., S.K., X.H., Z.J., Z.L., J.M., C.-P.L., H.Z.).,University of Chinese Academy of Sciences, Beijing (T.F., Z.G., S.K., X.H., Z.J., Z.L.)
| | - Shan Kou
- School of Life Science and Technology, ShanghaiTech University, China (T.F., Z.G., S.K., X.H., Z.J., Z.L., J.M., C.-P.L., H.Z.).,University of Chinese Academy of Sciences, Beijing (T.F., Z.G., S.K., X.H., Z.J., Z.L.)
| | - Xinyan Huang
- School of Life Science and Technology, ShanghaiTech University, China (T.F., Z.G., S.K., X.H., Z.J., Z.L., J.M., C.-P.L., H.Z.).,University of Chinese Academy of Sciences, Beijing (T.F., Z.G., S.K., X.H., Z.J., Z.L.)
| | - Zhen Jiang
- School of Life Science and Technology, ShanghaiTech University, China (T.F., Z.G., S.K., X.H., Z.J., Z.L., J.M., C.-P.L., H.Z.).,University of Chinese Academy of Sciences, Beijing (T.F., Z.G., S.K., X.H., Z.J., Z.L.)
| | - Zhengkai Lu
- School of Life Science and Technology, ShanghaiTech University, China (T.F., Z.G., S.K., X.H., Z.J., Z.L., J.M., C.-P.L., H.Z.).,University of Chinese Academy of Sciences, Beijing (T.F., Z.G., S.K., X.H., Z.J., Z.L.)
| | - Jufeng Meng
- School of Life Science and Technology, ShanghaiTech University, China (T.F., Z.G., S.K., X.H., Z.J., Z.L., J.M., C.-P.L., H.Z.)
| | - Chao-Po Lin
- School of Life Science and Technology, ShanghaiTech University, China (T.F., Z.G., S.K., X.H., Z.J., Z.L., J.M., C.-P.L., H.Z.)
| | - Hui Zhang
- School of Life Science and Technology, ShanghaiTech University, China (T.F., Z.G., S.K., X.H., Z.J., Z.L., J.M., C.-P.L., H.Z.)
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23
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Chavkin NW, Hirschi KK. Single Cell Analysis in Vascular Biology. Front Cardiovasc Med 2020; 7:42. [PMID: 32296715 PMCID: PMC7137757 DOI: 10.3389/fcvm.2020.00042] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2020] [Accepted: 03/05/2020] [Indexed: 12/12/2022] Open
Abstract
The ability to quantify DNA, RNA, and protein variations at the single cell level has revolutionized our understanding of cellular heterogeneity within tissues. Via such analyses, individual cells within populations previously thought to be homogeneous can now be delineated into specific subpopulations expressing unique sets of genes, enabling specialized functions. In vascular biology, studies using single cell RNA sequencing have revealed extensive heterogeneity among endothelial and mural cells even within the same vessel, key intermediate cell types that arise during blood and lymphatic vessel development, and cell-type specific responses to disease. Thus, emerging new single cell analysis techniques are enabling vascular biologists to elucidate mechanisms of vascular development, homeostasis, and disease that were previously not possible. In this review, we will provide an overview of single cell analysis methods and highlight recent advances in vascular biology made possible through single cell RNA sequencing.
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Affiliation(s)
- Nicholas W Chavkin
- Department of Cell Biology, Developmental Genomics Center, School of Medicine, University of Virginia, Charlottesville, VA, United States
| | - Karen K Hirschi
- Department of Cell Biology, Developmental Genomics Center, School of Medicine, University of Virginia, Charlottesville, VA, United States.,Departments of Medicine and Genetics, Cardiovascular Research Center, School of Medicine, Yale University, New Haven, CT, United States
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24
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Park MA, Kumar A, Jung HS, Uenishi G, Moskvin OV, Thomson JA, Slukvin II. Activation of the Arterial Program Drives Development of Definitive Hemogenic Endothelium with Lymphoid Potential. Cell Rep 2019; 23:2467-2481. [PMID: 29791856 DOI: 10.1016/j.celrep.2018.04.092] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2017] [Revised: 03/01/2018] [Accepted: 04/20/2018] [Indexed: 12/16/2022] Open
Abstract
Understanding the pathways guiding the development of definitive hematopoiesis with lymphoid potential is essential for advancing human pluripotent stem cell (hPSC) technologies for the treatment of blood diseases and immunotherapies. In the embryo, lymphoid progenitors and hematopoietic stem cells (HSCs) arise from hemogenic endothelium (HE) lining arteries but not veins. Here, we show that activation of the arterial program through ETS1 overexpression or by modulating MAPK/ERK signaling pathways at the mesodermal stage of development dramatically enhanced the formation of arterial-type HE expressing DLL4 and CXCR4. Blood cells generated from arterial HE were more than 100-fold enriched in T cell precursor frequency and possessed the capacity to produce B lymphocytes and red blood cells expressing high levels of BCL11a and β-globin. Together, these findings provide an innovative strategy to aid in the generation of definitive lymphomyeloid progenitors and lymphoid cells from hPSCs for immunotherapy through enhancing arterial programming of HE.
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Affiliation(s)
- Mi Ae Park
- National Primate Research Center, University of Wisconsin Graduate School, 1220 Capitol Court, Madison, WI 53715, USA
| | - Akhilesh Kumar
- National Primate Research Center, University of Wisconsin Graduate School, 1220 Capitol Court, Madison, WI 53715, USA
| | - Ho Sun Jung
- National Primate Research Center, University of Wisconsin Graduate School, 1220 Capitol Court, Madison, WI 53715, USA
| | - Gene Uenishi
- National Primate Research Center, University of Wisconsin Graduate School, 1220 Capitol Court, Madison, WI 53715, USA
| | - Oleg V Moskvin
- National Primate Research Center, University of Wisconsin Graduate School, 1220 Capitol Court, Madison, WI 53715, USA
| | - James A Thomson
- Morgridge Institute for Research, 330 N. Orchard Street, Madison, WI 53715, USA; Department of Cell and Regenerative Biology, University of Wisconsin School of Medicine and Public Health, Madison, WI 53707-7365, USA; Department of Molecular, Cellular, and Developmental Biology, University of California, Santa Barbara, CA 93106, USA
| | - Igor I Slukvin
- National Primate Research Center, University of Wisconsin Graduate School, 1220 Capitol Court, Madison, WI 53715, USA; Department of Cell and Regenerative Biology, University of Wisconsin School of Medicine and Public Health, Madison, WI 53707-7365, USA; Department of Pathology and Laboratory Medicine, University of Wisconsin Medical School, 600 Highland Avenue, Madison, WI 53792, USA.
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25
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Ruiz JP, Chen G, Haro Mora JJ, Keyvanfar K, Liu C, Zou J, Beers J, Bloomer H, Qanash H, Uchida N, Tisdale JF, Boehm M, Larochelle A. Robust generation of erythroid and multilineage hematopoietic progenitors from human iPSCs using a scalable monolayer culture system. Stem Cell Res 2019; 41:101600. [PMID: 31710911 PMCID: PMC6953424 DOI: 10.1016/j.scr.2019.101600] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/21/2019] [Revised: 09/10/2019] [Accepted: 09/23/2019] [Indexed: 12/31/2022] Open
Abstract
One of the most promising objectives of clinical hematology is to derive engraftable autologous hematopoietic stem cells (HSCs) from human induced pluripotent stem cells (iPSCs). Progress in translating iPSC technologies to the clinic relies on the availability of scalable differentiation methodologies. In this study, human iPSCs were differentiated for 21 days using STEMdiff™, a monolayer-based approach for hematopoietic differentiation of human iPSCs that requires no replating, co-culture or embryoid body formation. Both hematopoietic and non-hematopoietic cells were functionally characterized throughout differentiation. In the hematopoietic fraction, an early transient population of primitive CD235a+ erythroid progenitor cells first emerged, followed by hematopoietic progenitors with multilineage differentiation activity in vitro but no long-term engraftment potential in vivo. In later stages of differentiation, a nearly exclusive production of definitive erythroid progenitors was observed. In the non-hematopoietic fraction, we identified a prevalent population of mesenchymal stromal cells and limited arterial vascular endothelium (VE), suggesting that the cellular constitution of the monolayer may be inadequate to support the generation of HSCs with durable repopulating potential. Quantitative modulation of WNT/β-catenin and activin/nodal/TGFβ signaling pathways with CHIR/SB molecules during differentiation enhanced formation of arterial VE, definitive multilineage and erythroid progenitors, but was insufficient to orchestrate the generation of engrafting HSCs. Overall, STEMdiff™ provides a clinically-relevant and readily adaptable platform for the generation of erythroid and multilineage hematopoietic progenitors from human pluripotent stem cells.
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Affiliation(s)
- Juan Pablo Ruiz
- Cellular and Molecular Therapeutics Branch, National Heart, Lung and Blood Institute (NHLBI), National Institutes of Health (NIH), 9000 Rockville, Bethesda, MD 20892, United States
| | - Guibin Chen
- Translational Vascular Medicine Branch, NHLBI, NIH, Bethesda, MD 20892, United States
| | - Juan Jesus Haro Mora
- Cellular and Molecular Therapeutics Branch, National Heart, Lung and Blood Institute (NHLBI), National Institutes of Health (NIH), 9000 Rockville, Bethesda, MD 20892, United States
| | - Keyvan Keyvanfar
- Clinical Flow Core Facility, NHLBI, NIH, Bethesda, MD 20892, United States
| | - Chengyu Liu
- Transgenic Core Facility, NHLBI, NIH, Bethesda, MD 20892, United States
| | - Jizhong Zou
- iPSC Core Facility, NHLBI, NIH, Bethesda, MD 20892, United States
| | - Jeanette Beers
- iPSC Core Facility, NHLBI, NIH, Bethesda, MD 20892, United States
| | - Hanan Bloomer
- Cellular and Molecular Therapeutics Branch, National Heart, Lung and Blood Institute (NHLBI), National Institutes of Health (NIH), 9000 Rockville, Bethesda, MD 20892, United States
| | - Husam Qanash
- Cellular and Molecular Therapeutics Branch, National Heart, Lung and Blood Institute (NHLBI), National Institutes of Health (NIH), 9000 Rockville, Bethesda, MD 20892, United States; College of Applied Medical Sciences, University of Hail, Hail, Saudi Arabia; Department of Biology, The Catholic University of America, Washington, DC 20064, United States
| | - Naoya Uchida
- Cellular and Molecular Therapeutics Branch, National Heart, Lung and Blood Institute (NHLBI), National Institutes of Health (NIH), 9000 Rockville, Bethesda, MD 20892, United States
| | - John F Tisdale
- Cellular and Molecular Therapeutics Branch, National Heart, Lung and Blood Institute (NHLBI), National Institutes of Health (NIH), 9000 Rockville, Bethesda, MD 20892, United States
| | - Manfred Boehm
- Translational Vascular Medicine Branch, NHLBI, NIH, Bethesda, MD 20892, United States
| | - Andre Larochelle
- Cellular and Molecular Therapeutics Branch, National Heart, Lung and Blood Institute (NHLBI), National Institutes of Health (NIH), 9000 Rockville, Bethesda, MD 20892, United States.
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26
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A novel hiPSC-derived system for hematoendothelial and myeloid blood toxicity screens identifies compounds promoting and inhibiting endothelial-to-hematopoietic transition. Toxicol In Vitro 2019; 61:104622. [PMID: 31404653 DOI: 10.1016/j.tiv.2019.104622] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2019] [Revised: 06/16/2019] [Accepted: 08/06/2019] [Indexed: 11/21/2022]
Abstract
The exposure to toxic environmental and pharmaceutical substances can pose a long-term risk to human's health. In this study, we sought to investigate the potential of our recently developed method for induction of myeloid hematoendothelial and blood cells by overexpression of two transcription factors, GATA2 and ETV2, in human induced pluripotent stem cells (hiPSCs) for toxicity screening. For the primary screen in a high-throughput format, we selected twenty-two chemicals with various degrees of cytotoxicity available from the NIEHS National Toxicology Program (Tox21). The compounds were applied during the endothelial-to-hematopoietic transition and to differentiated myeloid progenitors growing in suspension. The system was capable of identifying compounds with both inhibitory and favorable effects on hematopoietic network, changes in expression of hematopoietic markers, and mitochondrial and cytotoxicity. The findings were confirmed and further investigated by secondary screens, colony forming cell assay, and gene expression profiling. The hematoendothelial toxicity of 5-fluorouracil, berberine chloride, and benzo(a)pyrene is characterized by the inhibition of cell division and a shift of hematopoietic programming to non-hemogenic endothelial and mesenchymal fates. This study demonstrates the feasibility of transcription factor (TF)-based differentiation systems to monitor endothelial and hematotoxicity and serves as an informative platform for screening myelosuppressive or stimulatory drugs and mechanistic studies of their action.
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27
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Abstract
The formation and remodeling of a functional circulatory system is critical for sustaining prenatal and postnatal life. During embryogenesis, newly differentiated endothelial cells require further specification to create the unique features of distinct vessel subtypes needed to support tissue morphogenesis. In this review, we explore signaling pathways and transcriptional regulators that modulate endothelial cell differentiation and specification, as well as applications of these processes to stem cell biology and regenerative medicine. We also summarize recent technical advances, including the growing utilization of single-cell sequencing to study vascular heterogeneity and development.
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Affiliation(s)
- Jingyao Qiu
- From the Department of Genetics (J.Q., K.K.H.), Yale University School of Medicine, New Haven, CT.,Department of Medicine (J.Q., K.K.H.), Yale University School of Medicine, New Haven, CT.,Yale Cardiovascular Research Center (J.Q., K.K.H.), Yale University School of Medicine, New Haven, CT.,Vascular Biology and Therapeutics Program (J.Q., K.K.H.), Yale University School of Medicine, New Haven, CT
| | - Karen K Hirschi
- From the Department of Genetics (J.Q., K.K.H.), Yale University School of Medicine, New Haven, CT.,Department of Medicine (J.Q., K.K.H.), Yale University School of Medicine, New Haven, CT.,Yale Cardiovascular Research Center (J.Q., K.K.H.), Yale University School of Medicine, New Haven, CT.,Vascular Biology and Therapeutics Program (J.Q., K.K.H.), Yale University School of Medicine, New Haven, CT
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28
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Understanding the Journey of Human Hematopoietic Stem Cell Development. Stem Cells Int 2019; 2019:2141475. [PMID: 31198425 PMCID: PMC6526542 DOI: 10.1155/2019/2141475] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2019] [Accepted: 04/11/2019] [Indexed: 12/17/2022] Open
Abstract
Hematopoietic stem cells (HSCs) surface during embryogenesis leading to the genesis of the hematopoietic system, which is vital for immune function, homeostasis balance, and inflammatory responses in the human body. Hematopoiesis is the process of blood cell formation, which initiates from hematopoietic stem/progenitor cells (HSPCs) and is responsible for the generation of all adult blood cells. With their self-renewing and pluripotent properties, human pluripotent stem cells (hPSCs) provide an unprecedented opportunity to create in vitro models of differentiation that will revolutionize our understanding of human development, especially of the human blood system. The utilization of hPSCs provides newfound approaches for studying the origins of human blood cell diseases and generating progenitor populations for cell-based treatments. Current shortages in our knowledge of adult HSCs and the molecular mechanisms that control hematopoietic development in physiological and pathological conditions can be resolved with better understanding of the regulatory networks involved in hematopoiesis, their impact on gene expression, and further enhance our ability to develop novel strategies of clinical importance. In this review, we delve into the recent advances in the understanding of the various cellular and molecular pathways that lead to blood development from hPSCs and examine the current knowledge of human hematopoietic development. We also review how in vitro differentiation of hPSCs can undergo hematopoietic transition and specification, including major subtypes, and consider techniques and protocols that facilitate the generation of hematopoietic stem cells.
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29
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Slukvin II, Uenishi GI. Arterial identity of hemogenic endothelium: a key to unlock definitive hematopoietic commitment in human pluripotent stem cell cultures. Exp Hematol 2018; 71:3-12. [PMID: 30500414 DOI: 10.1016/j.exphem.2018.11.007] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2018] [Revised: 11/09/2018] [Accepted: 11/21/2018] [Indexed: 02/06/2023]
Abstract
Human pluripotent stem cells (hPSCs) have been suggested as a potential source for the de novo production of blood cells for transfusion, immunotherapies, and transplantation. However, even with advanced hematopoietic differentiation methods, the primitive and myeloid-restricted waves of hematopoiesis dominate in hPSC differentiation cultures, whereas cell surface markers to distinguish these waves of hematopoiesis from lympho-myeloid hematopoiesis remain unknown. In the embryo, hematopoietic stem cells (HSCs) arise from hemogenic endothelium (HE) lining arteries, but not veins. This observation led to a long-standing hypothesis that arterial specification is an essential prerequisite to initiate the HSC program. It has also been established that lymphoid potential in the yolk sac and extraembryonic vasculature is mostly confined to arteries, whereas myeloid-restricted hematopoiesis is not specific to arterial vessels. Here, we review how the link between arterialization and the subsequent definitive multilineage hematopoietic program can be exploited to identify HE enriched in lymphoid progenitors and aid in in vitro approaches to enhance the production of lymphoid cells and potentially HSCs from hPSCs. We also discuss alternative models of hematopoietic specification at arterial sites and recent advances in our understanding of hematopoietic development and the production of engraftable hematopoietic cells from hPSCs.
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Affiliation(s)
- Igor I Slukvin
- National Primate Research Center, University of Wisconsin Graduate School, Madison, WI, USA; Department of Pathology and Laboratory Medicine, University of Wisconsin Medical School, Madison, WI, USA; Department of Cell and Regenerative Biology, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA.
| | - Gene I Uenishi
- National Primate Research Center, University of Wisconsin Graduate School, Madison, WI, USA
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30
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Moore C, Richens JL, Hough Y, Ucanok D, Malla S, Sang F, Chen Y, Elworthy S, Wilkinson RN, Gering M. Gfi1aa and Gfi1b set the pace for primitive erythroblast differentiation from hemangioblasts in the zebrafish embryo. Blood Adv 2018; 2:2589-2606. [PMID: 30309860 PMCID: PMC6199651 DOI: 10.1182/bloodadvances.2018020156] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2018] [Accepted: 09/07/2018] [Indexed: 12/14/2022] Open
Abstract
The transcriptional repressors Gfi1(a) and Gfi1b are epigenetic regulators with unique and overlapping roles in hematopoiesis. In different contexts, Gfi1 and Gfi1b restrict or promote cell proliferation, prevent apoptosis, influence cell fate decisions, and are essential for terminal differentiation. Here, we show in primitive red blood cells (prRBCs) that they can also set the pace for cellular differentiation. In zebrafish, prRBCs express 2 of 3 zebrafish Gfi1/1b paralogs, Gfi1aa and Gfi1b. The recently identified zebrafish gfi1aa gene trap allele qmc551 drives erythroid green fluorescent protein (GFP) instead of Gfi1aa expression, yet homozygous carriers have normal prRBCs. prRBCs display a maturation defect only after splice morpholino-mediated knockdown of Gfi1b in gfi1aa qmc551 homozygous embryos. To study the transcriptome of the Gfi1aa/1b double-depleted cells, we performed an RNA-Seq experiment on GFP-positive prRBCs sorted from 20-hour-old embryos that were heterozygous or homozygous for gfi1aa qmc551 , as well as wt or morphant for gfi1b We subsequently confirmed and extended these data in whole-mount in situ hybridization experiments on newly generated single- and double-mutant embryos. Combined, the data showed that in the absence of Gfi1aa, the synchronously developing prRBCs were delayed in activating late erythroid differentiation, as they struggled to suppress early erythroid and endothelial transcription programs. The latter highlighted the bipotent nature of the progenitors from which prRBCs arise. In the absence of Gfi1aa, Gfi1b promoted erythroid differentiation as stepwise loss of wt gfi1b copies progressively delayed Gfi1aa-depleted prRBCs even further, showing that Gfi1aa and Gfi1b together set the pace for prRBC differentiation from hemangioblasts.
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Affiliation(s)
| | | | | | | | - Sunir Malla
- Deep Seq, School of Life Sciences, Queen's Medical Centre, University of Nottingham, Nottingham, United Kingdom
| | - Fei Sang
- Deep Seq, School of Life Sciences, Queen's Medical Centre, University of Nottingham, Nottingham, United Kingdom
| | - Yan Chen
- Department of Infection, Immunity & Cardiovascular Disease, Medical School, and
- Bateson Centre, University of Sheffield, Sheffield, United Kingdom
| | - Stone Elworthy
- Department of Infection, Immunity & Cardiovascular Disease, Medical School, and
- Bateson Centre, University of Sheffield, Sheffield, United Kingdom
| | - Robert N Wilkinson
- Department of Infection, Immunity & Cardiovascular Disease, Medical School, and
- Bateson Centre, University of Sheffield, Sheffield, United Kingdom
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31
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Plein A, Fantin A, Denti L, Pollard JW, Ruhrberg C. Erythro-myeloid progenitors contribute endothelial cells to blood vessels. Nature 2018; 562:223-228. [PMID: 30258231 PMCID: PMC6289247 DOI: 10.1038/s41586-018-0552-x] [Citation(s) in RCA: 100] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2016] [Accepted: 08/17/2018] [Indexed: 12/16/2022]
Abstract
The earliest blood vessels in mammalian embryos are formed when endothelial cells differentiate from angioblasts and coalesce into tubular networks. Thereafter, the endothelium is thought to expand solely by proliferation of pre-existing endothelial cells. Here we show that a complementary source of endothelial cells is recruited into pre-existing vasculature after differentiation from the earliest precursors of erythrocytes, megakaryocytes and macrophages, the erythro-myeloid progenitors (EMPs) that are born in the yolk sac. A first wave of EMPs contributes endothelial cells to the yolk sac endothelium, and a second wave of EMPs colonizes the embryo and contributes endothelial cells to intraembryonic endothelium in multiple organs, where they persist into adulthood. By demonstrating that EMPs constitute a hitherto unrecognized source of endothelial cells, we reveal that embryonic blood vascular endothelium expands in a dual mechanism that involves both the proliferation of pre-existing endothelial cells and the incorporation of endothelial cells derived from haematopoietic precursors.
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Affiliation(s)
- Alice Plein
- UCL Institute of Ophthalmology, University College London, London, UK
| | - Alessandro Fantin
- UCL Institute of Ophthalmology, University College London, London, UK
| | - Laura Denti
- UCL Institute of Ophthalmology, University College London, London, UK
| | - Jeffrey W Pollard
- MRC Centre for Reproductive Health, University of Edinburgh, Edinburgh, UK
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32
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Yzaguirre AD, Howell ED, Li Y, Liu Z, Speck NA. Runx1 is sufficient for blood cell formation from non-hemogenic endothelial cells in vivo only during early embryogenesis. Development 2018; 145:dev.158162. [PMID: 29361566 DOI: 10.1242/dev.158162] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2017] [Accepted: 01/02/2018] [Indexed: 01/02/2023]
Abstract
Hematopoietic cells differentiate during embryogenesis from a population of endothelial cells called hemogenic endothelium (HE) in a process called the endothelial-to-hematopoietic transition (EHT). The transcription factor Runx1 is required for EHT, but for how long and which endothelial cells are competent to respond to Runx1 are not known. Here, we show that the ability of Runx1 to induce EHT in non-hemogenic endothelial cells depends on the anatomical location of the cell and the developmental age of the conceptus. Ectopic expression of Runx1 in non-hemogenic endothelial cells between embryonic day (E) 7.5 and E8.5 promoted the formation of erythro-myeloid progenitors (EMPs) specifically in the yolk sac, the dorsal aorta and the heart. The increase in EMPs was accompanied by a higher frequency of HE cells able to differentiate into EMPs in vitro Expression of Runx1 just 1 day later (E8.5-E9.5) failed to induce the ectopic formation of EMPs. Therefore, endothelial cells, located in specific sites in the conceptus, have a short developmental window of competency during which they can respond to Runx1 and differentiate into blood cells.
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Affiliation(s)
- Amanda D Yzaguirre
- Abramson Family Cancer Research Institute, Department of Cell and Developmental Biology, Institute for Regenerative Medicine, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Elizabeth D Howell
- Abramson Family Cancer Research Institute, Department of Cell and Developmental Biology, Institute for Regenerative Medicine, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Yan Li
- Abramson Family Cancer Research Institute, Department of Cell and Developmental Biology, Institute for Regenerative Medicine, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Zijing Liu
- Beijing Institute of Biotechnology, Beijing 100850, People's Republic of China
| | - Nancy A Speck
- Abramson Family Cancer Research Institute, Department of Cell and Developmental Biology, Institute for Regenerative Medicine, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA 19104, USA
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33
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Goncharov NV, Nadeev AD, Jenkins RO, Avdonin PV. Markers and Biomarkers of Endothelium: When Something Is Rotten in the State. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2017; 2017:9759735. [PMID: 29333215 PMCID: PMC5733214 DOI: 10.1155/2017/9759735] [Citation(s) in RCA: 126] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/07/2017] [Accepted: 09/05/2017] [Indexed: 12/14/2022]
Abstract
Endothelium is a community of endothelial cells (ECs), which line the blood and lymphatic vessels, thus forming an interface between the tissues and the blood or lympha. This strategic position of endothelium infers its indispensable functional role in controlling vasoregulation, haemostasis, and inflammation. The state of endothelium is simultaneously the cause and effect of many diseases, and this is coupled with modifications of endothelial phenotype represented by markers and with biochemical profile of blood represented by biomarkers. In this paper, we briefly review data on the functional role of endothelium, give definitions of endothelial markers and biomarkers, touch on the methodological approaches for revealing biomarkers, present an implicit role of endothelium in some toxicological mechanistic studies, and survey the role of reactive oxygen species (ROS) in modulation of endothelial status.
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Affiliation(s)
- Nikolay V. Goncharov
- Research Institute of Hygiene, Occupational Pathology and Human Ecology, Saint Petersburg, Russia
- Sechenov Institute of Evolutionary Physiology and Biochemistry RAS, Saint Petersburg, Russia
| | - Alexander D. Nadeev
- Sechenov Institute of Evolutionary Physiology and Biochemistry RAS, Saint Petersburg, Russia
- Institute of Cell Biophysics RAS, Pushchino, Russia
| | - Richard O. Jenkins
- School of Allied Health Sciences, De Montfort University, The Gateway, Leicester LE1 9BH, UK
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Junqueira Reis LC, Picanço-Castro V, Paes BCMF, Pereira OA, Gerdes Gyuricza I, de Araújo FT, Morato-Marques M, Moreira LF, Costa EDBO, dos Santos TPM, Covas DT, Pereira Carramaschi LDV, Russo EMDS. Induced Pluripotent Stem Cell for the Study and Treatment of Sickle Cell Anemia. Stem Cells Int 2017; 2017:7492914. [PMID: 28814957 PMCID: PMC5549510 DOI: 10.1155/2017/7492914] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2017] [Accepted: 04/05/2017] [Indexed: 12/14/2022] Open
Abstract
Sickle cell anemia (SCA) is a monogenic disease of high mortality, affecting millions of people worldwide. There is no broad, effective, and safe definitive treatment for SCA, so the palliative treatments are the most used. The establishment of an in vitro model allows better understanding of how the disease occurs, besides allowing the development of more effective tests and treatments. In this context, iPSC technology is a powerful tool for basic research and disease modeling, and a promise for finding and screening more effective and safe drugs, besides the possibility of use in regenerative medicine. This work obtained a model for study and treatment of SCA using iPSC. Then, episomal vectors were used for reprogramming peripheral blood mononuclear cells to obtain integration-free iPSC. Cells were collected from patients treated with hydroxyurea and without treatment. The iPSCP Bscd lines were characterized for pluripotent and differentiation potential. The iPSC lines were differentiated into HSC, so that we obtained a dynamic and efficient protocol of CD34+CD45+ cells production. We offer a valuable tool for a better understanding of how SCA occurs, in addition to making possible the development of more effective drugs and treatments and providing better understanding of widely used treatments, such as hydroxyurea.
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Affiliation(s)
- Luiza Cunha Junqueira Reis
- Pharmaceutical Sciences School of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil
- Blood Center Foundation of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Virgínia Picanço-Castro
- Blood Center Foundation of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Bárbara Cristina Martins Fernandes Paes
- Blood Center Foundation of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil
- Medical School of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Olívia Ambrozini Pereira
- Philosophy, Sciences and Languages School of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil
| | | | | | | | | | | | | | - Dimas Tadeu Covas
- Blood Center Foundation of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil
- Medical School of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil
| | | | - Elisa Maria de Sousa Russo
- Pharmaceutical Sciences School of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil
- Blood Center Foundation of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil
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Cañete A, Cano E, Muñoz-Chápuli R, Carmona R. Role of Vitamin A/Retinoic Acid in Regulation of Embryonic and Adult Hematopoiesis. Nutrients 2017; 9:E159. [PMID: 28230720 PMCID: PMC5331590 DOI: 10.3390/nu9020159] [Citation(s) in RCA: 71] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2016] [Revised: 02/05/2017] [Accepted: 02/16/2017] [Indexed: 12/11/2022] Open
Abstract
Vitamin A is an essential micronutrient throughout life. Its physiologically active metabolite retinoic acid (RA), acting through nuclear retinoic acid receptors (RARs), is a potent regulator of patterning during embryonic development, as well as being necessary for adult tissue homeostasis. Vitamin A deficiency during pregnancy increases risk of maternal night blindness and anemia and may be a cause of congenital malformations. Childhood Vitamin A deficiency can cause xerophthalmia, lower resistance to infection and increased risk of mortality. RA signaling appears to be essential for expression of genes involved in developmental hematopoiesis, regulating the endothelial/blood cells balance in the yolk sac, promoting the hemogenic program in the aorta-gonad-mesonephros area and stimulating eryrthropoiesis in fetal liver by activating the expression of erythropoietin. In adults, RA signaling regulates differentiation of granulocytes and enhances erythropoiesis. Vitamin A may facilitate iron absorption and metabolism to prevent anemia and plays a key role in mucosal immune responses, modulating the function of regulatory T cells. Furthermore, defective RA/RARα signaling is involved in the pathogenesis of acute promyelocytic leukemia due to a failure in differentiation of promyelocytes. This review focuses on the different roles played by vitamin A/RA signaling in physiological and pathological mouse hematopoiesis duddurring both, embryonic and adult life, and the consequences of vitamin A deficiency for the blood system.
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Affiliation(s)
- Ana Cañete
- Department of Animal Biology, Faculty of Science, University of Malaga, Campus de Teatinos s/n Malaga 29071, Spain and Andalusian Center for Nanomedicine and Biotechnology (BIONAND), Severo Ochoa 25, Campanillas 29590, Spain.
| | - Elena Cano
- Max-Delbruck Center for Molecular Medicine, Robert Roessle-Strasse 10, 13125 Berlin, Germany.
| | - Ramón Muñoz-Chápuli
- Department of Animal Biology, Faculty of Science, University of Malaga, Campus de Teatinos s/n Malaga 29071, Spain and Andalusian Center for Nanomedicine and Biotechnology (BIONAND), Severo Ochoa 25, Campanillas 29590, Spain.
| | - Rita Carmona
- Department of Animal Biology, Faculty of Science, University of Malaga, Campus de Teatinos s/n Malaga 29071, Spain and Andalusian Center for Nanomedicine and Biotechnology (BIONAND), Severo Ochoa 25, Campanillas 29590, Spain.
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Dejana E, Hirschi KK, Simons M. The molecular basis of endothelial cell plasticity. Nat Commun 2017; 8:14361. [PMID: 28181491 PMCID: PMC5309780 DOI: 10.1038/ncomms14361] [Citation(s) in RCA: 287] [Impact Index Per Article: 41.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2016] [Accepted: 12/14/2016] [Indexed: 02/06/2023] Open
Abstract
The endothelium is capable of remarkable plasticity. In the embryo, primitive endothelial cells differentiate to acquire arterial, venous or lymphatic fates. Certain endothelial cells also undergo hematopoietic transition giving rise to multi-lineage hematopoietic stem and progenitors while others acquire mesenchymal properties necessary for heart development. In the adult, maintenance of differentiated endothelial state is an active process requiring constant signalling input. The failure to do so leads to the development of endothelial-to-mesenchymal transition that plays an important role in pathogenesis of a number of diseases. A better understanding of these phenotypic changes may lead to development of new therapeutic interventions. Vascular endothelium possesses remarkable plasticity in response to cues from its surroundings, leading to great heterogeneity of endothelial cells in different vascular beds. Here the authors explain the molecular basis of endothelial plasticity during embryogenesis and in various diseases.
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Affiliation(s)
- Elisabetta Dejana
- Vascular Biology Unit, FIRC Institute of Molecular Oncology, Milan 20129, Italy
- Department of Immunology, Genetics and Pathology, Uppsala University, Uppsala 751 85, Sweden
| | - Karen K. Hirschi
- Yale Cardiovasc. Res. Center, Departments of Internal Medicine, Genetics and Biomedical Engineering New Haven, Connecticut CT06511, USA
| | - Michael Simons
- Yale Cardiovascular Research Center, Department of Internal Medicine and Department of Cell Biology, Yale University School of Medicine, New Haven, Connecticut CT06511, USA
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38
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Pillay LM, Mackowetzky KJ, Widen SA, Waskiewicz AJ. Somite-Derived Retinoic Acid Regulates Zebrafish Hematopoietic Stem Cell Formation. PLoS One 2016; 11:e0166040. [PMID: 27861498 PMCID: PMC5115706 DOI: 10.1371/journal.pone.0166040] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2016] [Accepted: 10/11/2016] [Indexed: 01/14/2023] Open
Abstract
Hematopoietic stem cells (HSCs) are multipotent progenitors that generate all vertebrate adult blood lineages. Recent analyses have highlighted the importance of somite-derived signaling factors in regulating HSC specification and emergence from dorsal aorta hemogenic endothelium. However, these factors remain largely uncharacterized. We provide evidence that the vitamin A derivative retinoic acid (RA) functions as an essential regulator of zebrafish HSC formation. Temporal analyses indicate that RA is required for HSC gene expression prior to dorsal aorta formation, at a time when the predominant RA synthesis enzyme, aldh1a2, is strongly expressed within the paraxial mesoderm and somites. Previous research implicated the Cxcl12 chemokine and Notch signaling pathways in HSC formation. Consequently, to understand how RA regulates HSC gene expression, we surveyed the expression of components of these pathways in RA-depleted zebrafish embryos. During somitogenesis, RA-depleted embryos exhibit altered expression of jam1a and jam2a, which potentiate Notch signaling within nascent endothelial cells. RA-depleted embryos also exhibit a severe reduction in the expression of cxcr4a, the predominant Cxcl12b receptor. Furthermore, pharmacological inhibitors of RA synthesis and Cxcr4 signaling act in concert to reduce HSC formation. Our analyses demonstrate that somite-derived RA functions to regulate components of the Notch and Cxcl12 chemokine signaling pathways during HSC formation.
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Affiliation(s)
- Laura M Pillay
- Department of Biological Sciences, University of Alberta, Edmonton, Alberta, T6G 2E9, Canada
| | - Kacey J Mackowetzky
- Department of Biological Sciences, University of Alberta, Edmonton, Alberta, T6G 2E9, Canada
| | - Sonya A Widen
- Department of Biological Sciences, University of Alberta, Edmonton, Alberta, T6G 2E9, Canada
| | - Andrew Jan Waskiewicz
- Department of Biological Sciences, University of Alberta, Edmonton, Alberta, T6G 2E9, Canada.,Neuroscience and Mental Health Institute, University of Alberta, Edmonton, Alberta, T6G 2E9, Canada.,Women & Children's Health Research Institute, University of Alberta, Edmonton, Alberta, T6G 2E9, Canada
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39
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Differentiation of human embryonic stem cells to HOXA+ hemogenic vasculature that resembles the aorta-gonad-mesonephros. Nat Biotechnol 2016; 34:1168-1179. [DOI: 10.1038/nbt.3702] [Citation(s) in RCA: 120] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2015] [Accepted: 09/14/2016] [Indexed: 01/13/2023]
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40
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Yzaguirre AD, Speck NA. Insights into blood cell formation from hemogenic endothelium in lesser-known anatomic sites. Dev Dyn 2016; 245:1011-28. [PMID: 27389484 DOI: 10.1002/dvdy.24430] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2016] [Revised: 06/24/2016] [Accepted: 07/04/2016] [Indexed: 01/10/2023] Open
Abstract
BACKGROUND Hematopoietic stem and progenitor cells (HSPCs) are generated de novo in the embryo in a process termed the endothelial to hematopoietic transition (EHT). EHT is most extensively studied in the yolk sac and dorsal aorta. Recently new sites of hematopoiesis have been described, including the heart, somites, head, and venous plexus of the yolk sac. RESULTS We examined sites of HSPC formation in well-studied and in less well-known sites by mapping the expression of the key EHT factor Runx1 along with several other markers by means of confocal microscopy. We identified sites of HSPC formation in the head, heart and somites. We also identified sites of HSPC formation in both the arterial and venous plexuses of the yolk sac, and show that progenitors with lymphoid potential are enriched in hematopoietic clusters in close proximity to arteries. Furthermore, we demonstrate that many of the cells in hematopoietic clusters resemble monocytes or granulocytes based on nuclear shape. CONCLUSIONS We identified sites of HSPC formation in the head, heart, and somites, confirming that embryonic hematopoiesis is less spatially restricted than previously thought. Furthermore, we show that HSPCs in the yolk sac with lymphoid potential are located in closer proximity to arteries than to veins. Developmental Dynamics 245:1011-1028, 2016. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Amanda D Yzaguirre
- Abramson Family Cancer Research Institute, Department of Cell and Developmental Biology, Institute for Regenerative Medicine, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania
| | - Nancy A Speck
- Abramson Family Cancer Research Institute, Department of Cell and Developmental Biology, Institute for Regenerative Medicine, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania.
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41
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Slukvin II. Generating human hematopoietic stem cells in vitro -exploring endothelial to hematopoietic transition as a portal for stemness acquisition. FEBS Lett 2016; 590:4126-4143. [PMID: 27391301 DOI: 10.1002/1873-3468.12283] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2016] [Revised: 06/20/2016] [Accepted: 07/06/2016] [Indexed: 11/10/2022]
Abstract
Advances in cellular reprogramming technologies have created alternative platforms for the production of blood cells, either through inducing pluripotency in somatic cells or by way of direct conversion of nonhematopoietic cells into blood cells. However, de novo generation of hematopoietic stem cells (HSCs) with robust and sustained multilineage engraftment potential remains a significant challenge. Hemogenic endothelium (HE) has been recognized as a unique transitional stage of blood development from mesoderm at which HSCs arise in certain embryonic locations. The major aim of this review is to summarize historical perspectives and recent advances in the investigation of endothelial to hematopoietic transition (EHT) and HSC formation in the context of aiding in vitro approaches to instruct HSC fate from human pluripotent stem cells. In addition, direct conversion of somatic cells to blood and HSCs and progression of this conversion through HE stage are discussed. A thorough understanding of the intrinsic and microenvironmental regulators of EHT that lead to the acquisition of self-renewal potential by emerging blood cells is essential to advance the technologies for HSC production and expansion.
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Affiliation(s)
- Igor I Slukvin
- Department of Pathology and Laboratory Medicine, School of Medicine and Public Health, University of Wisconsin, Madison, WI, USA.,Department of Cell and Regenerative Biology, School of Medicine and Public Health, University of Wisconsin, Madison, WI, USA.,National Primate Research Center, University of Wisconsin Graduate School, Madison, WI, USA
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42
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Fang JS, Gritz EC, Marcelo KL, Hirschi KK. Isolation of Murine Embryonic Hemogenic Endothelial Cells. J Vis Exp 2016. [PMID: 27341393 PMCID: PMC4927799 DOI: 10.3791/54150] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
The specification of hemogenic endothelial cells from embryonic vascular endothelium occurs during brief developmental periods within distinct tissues, and is necessary for the emergence of definitive HSPC from the murine extra embryonic yolk sac, placenta, umbilical vessels, and the embryonic aorta-gonad-mesonephros (AGM) region. The transient nature and small size of this cell population renders its reproducible isolation for careful quantification and experimental applications technically difficult. We have established a fluorescence-activated cell sorting (FACS)-based protocol for simultaneous isolation of hemogenic endothelial cells and HSPC during their peak generation times in the yolk sac and AGM. We demonstrate methods for dissection of yolk sac and AGM tissues from mouse embryos, and we present optimized tissue digestion and antibody conjugation conditions for maximal cell survival prior to identification and retrieval via FACS. Representative FACS analysis plots are shown that identify the hemogenic endothelial cell and HSPC phenotypes, and describe a methylcellulose-based assay for evaluating their blood forming potential on a clonal level.
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Affiliation(s)
- Jennifer S Fang
- Departments of Medicine, Genetics and Biomedical Engineering, Yale Cardiovascular Research Center, Vascular Biology and Therapeutics Program, Yale Stem Cell Center, Yale University School of Medicine
| | - Emily C Gritz
- Department of Pediatrics, Section of Neonatal-Perinatal Medicine, Yale University School of Medicine
| | - Kathrina L Marcelo
- Department of Molecular and Cellular Biology, Baylor College of Medicine
| | - Karen K Hirschi
- Departments of Medicine, Genetics and Biomedical Engineering, Yale Cardiovascular Research Center, Vascular Biology and Therapeutics Program, Yale Stem Cell Center, Yale University School of Medicine;
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43
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Gritz E, Hirschi KK. Specification and function of hemogenic endothelium during embryogenesis. Cell Mol Life Sci 2016; 73:1547-67. [PMID: 26849156 PMCID: PMC4805691 DOI: 10.1007/s00018-016-2134-0] [Citation(s) in RCA: 78] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2015] [Revised: 12/16/2015] [Accepted: 01/07/2016] [Indexed: 01/15/2023]
Abstract
Hemogenic endothelium is a specialized subset of developing vascular endothelium that acquires hematopoietic potential and can give rise to multilineage hematopoietic stem and progenitor cells during a narrow developmental window in tissues such as the extraembryonic yolk sac and embryonic aorta-gonad-mesonephros. Herein, we review current knowledge about the historical and developmental origins of hemogenic endothelium, the molecular events that govern hemogenic specification of vascular endothelial cells, the generation of multilineage hematopoietic stem and progenitor cells from hemogenic endothelium, and the potential for translational applications of knowledge gained from further study of these processes.
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Affiliation(s)
- Emily Gritz
- Departments of Medicine, Genetics and Biomedical Engineering, Yale Cardiovascular Research Center, Vascular Biology and Therapeutics Program, and Yale Stem Cell Center, Yale University School of Medicine, 300 George St., New Haven, CT, 06511, USA
- Department of Pediatrics, Section of Neonatal-Perinatal Medicine, Yale University School of Medicine, 333 Cedar St., New Haven, CT, 06511, USA
| | - Karen K Hirschi
- Departments of Medicine, Genetics and Biomedical Engineering, Yale Cardiovascular Research Center, Vascular Biology and Therapeutics Program, and Yale Stem Cell Center, Yale University School of Medicine, 300 George St., New Haven, CT, 06511, USA.
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Frame JM, Fegan KH, Conway SJ, McGrath KE, Palis J. Definitive Hematopoiesis in the Yolk Sac Emerges from Wnt-Responsive Hemogenic Endothelium Independently of Circulation and Arterial Identity. Stem Cells 2016; 34:431-44. [PMID: 26418893 PMCID: PMC4755868 DOI: 10.1002/stem.2213] [Citation(s) in RCA: 122] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2015] [Revised: 08/21/2015] [Accepted: 09/04/2015] [Indexed: 12/20/2022]
Abstract
Adult-repopulating hematopoietic stem cells (HSCs) emerge in low numbers in the midgestation mouse embryo from a subset of arterial endothelium, through an endothelial-to-hematopoietic transition. HSC-producing arterial hemogenic endothelium relies on the establishment of embryonic blood flow and arterial identity, and requires β-catenin signaling. Specified prior to and during the formation of these initial HSCs are thousands of yolk sac-derived erythro-myeloid progenitors (EMPs). EMPs ensure embryonic survival prior to the establishment of a permanent hematopoietic system, and provide subsets of long-lived tissue macrophages. While an endothelial origin for these HSC-independent definitive progenitors is also accepted, the spatial location and temporal output of yolk sac hemogenic endothelium over developmental time remain undefined. We performed a spatiotemporal analysis of EMP emergence, and document the morphological steps of the endothelial-to-hematopoietic transition. Emergence of rounded EMPs from polygonal clusters of Kit(+) cells initiates prior to the establishment of arborized arterial and venous vasculature in the yolk sac. Interestingly, Kit(+) polygonal clusters are detected in both arterial and venous vessels after remodeling. To determine whether there are similar mechanisms regulating the specification of EMPs with other angiogenic signals regulating adult-repopulating HSCs, we investigated the role of embryonic blood flow and Wnt/β-catenin signaling during EMP emergence. In embryos lacking a functional circulation, rounded Kit(+) EMPs still fully emerge from unremodeled yolk sac vasculature. In contrast, canonical Wnt signaling appears to be a common mechanism regulating hematopoietic emergence from hemogenic endothelium. These data illustrate the heterogeneity in hematopoietic output and spatiotemporal regulation of primary embryonic hemogenic endothelium.
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Affiliation(s)
- Jenna M. Frame
- Department of Pediatrics, Center for Pediatric Biomedical Research, University of Rochester Medical Center, Rochester, NY, USA
- Department of Pathology and Laboratory Medicine, University of Rochester Medical Center, Rochester, NY, USA
| | - Katherine H. Fegan
- Department of Pediatrics, Center for Pediatric Biomedical Research, University of Rochester Medical Center, Rochester, NY, USA
| | - Simon J. Conway
- Department of Pediatrics, Herman B. Wells Center for Pediatric Research, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Kathleen E. McGrath
- Department of Pediatrics, Center for Pediatric Biomedical Research, University of Rochester Medical Center, Rochester, NY, USA
| | - James Palis
- Department of Pediatrics, Center for Pediatric Biomedical Research, University of Rochester Medical Center, Rochester, NY, USA
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45
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Chen T, Wang F, Wu M, Wang ZZ. Development of hematopoietic stem and progenitor cells from human pluripotent stem cells. J Cell Biochem 2016; 116:1179-89. [PMID: 25740540 DOI: 10.1002/jcb.25097] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2015] [Accepted: 01/23/2015] [Indexed: 01/04/2023]
Abstract
Human pluripotent stem cells (hPSCs), including human embryonic stem cells (hESCs) and human induced pluripotent stem cells (hiPSCs), provide a new cell source for regenerative medicine, disease modeling, drug discovery, and preclinical toxicity screening. Understanding of the onset and the sequential process of hematopoietic cells from differentiated hPSCs will enable the achievement of personalized medicine and provide an in vitro platform for studying of human hematopoietic development and disease. During embryogenesis, hemogenic endothelial cells, a specified subset of endothelial cells in embryonic endothelium, are the primary source of multipotent hematopoietic stem cells. In this review, we discuss current status in the generation of multipotent hematopoietic stem and progenitor cells from hPSCs via hemogenic endothelial cells. We also review the achievements in direct reprogramming from non-hematopoietic cells to hematopoietic stem and progenitor cells. Further characterization of hematopoietic differentiation in hPSCs will improve our understanding of blood development and expedite the development of hPSC-derived blood products for therapeutic purpose.
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Affiliation(s)
- Tong Chen
- Department of Hematology, Huashan Hospital, Fudan University, Shanghai, China
| | - Fen Wang
- Department of Hematology, Huashan Hospital, Fudan University, Shanghai, China
| | - Mengyao Wu
- Department of Hematology, Huashan Hospital, Fudan University, Shanghai, China
| | - Zack Z Wang
- Division of Hematology, Johns Hopkins University School of Medicine, Baltimore, Maryland, 21205
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Rönn RE, Guibentif C, Moraghebi R, Chaves P, Saxena S, Garcia B, Woods NB. Retinoic acid regulates hematopoietic development from human pluripotent stem cells. Stem Cell Reports 2015; 4:269-81. [PMID: 25680478 PMCID: PMC4325193 DOI: 10.1016/j.stemcr.2015.01.009] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2014] [Revised: 01/12/2015] [Accepted: 01/12/2015] [Indexed: 11/25/2022] Open
Abstract
The functions of retinoic acid (RA), a potent morphogen with crucial roles in embryogenesis including developmental hematopoiesis, have not been thoroughly investigated in the human setting. Using an in vitro model of human hematopoietic development, we evaluated the effects of RA signaling on the development of blood and on generated hematopoietic progenitors. Decreased RA signaling increases the generation of cells with a hematopoietic stem cell (HSC)-like phenotype, capable of differentiation into myeloid and lymphoid lineages, through two separate mechanisms: by increasing the commitment of pluripotent stem cells toward the hematopoietic lineage during the developmental process and by decreasing the differentiation of generated blood progenitors. Our results demonstrate that controlled low-level RA signaling is a requirement in human blood development, and we propose a new interpretation of RA as a regulatory factor, where appropriate control of RA signaling enables increased generation of hematopoietic progenitor cells from pluripotent stem cells in vitro. RA abrogates blood generation from human induced pluripotent stem cells (iPSCs) RA inhibition improves commitment toward blood at multiple developmental stages RA inhibition promotes maintenance of more primitive human hematopoietic progenitors Hematopoietic development depends on an RAlo environment
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Affiliation(s)
- Roger E Rönn
- Department of Molecular Medicine and Gene Therapy, Lund Stem Cell Center, Lund University, BMC A12, 221 84 Lund, Sweden
| | - Carolina Guibentif
- Department of Molecular Medicine and Gene Therapy, Lund Stem Cell Center, Lund University, BMC A12, 221 84 Lund, Sweden
| | - Roksana Moraghebi
- Department of Molecular Medicine and Gene Therapy, Lund Stem Cell Center, Lund University, BMC A12, 221 84 Lund, Sweden
| | - Patricia Chaves
- Stem Cell Laboratory, Lund University Stem Cell Center, Lund University, BMC B10, 221 84 Lund, Sweden
| | - Shobhit Saxena
- Department of Molecular Medicine and Gene Therapy, Lund Stem Cell Center, Lund University, BMC A12, 221 84 Lund, Sweden
| | - Bradley Garcia
- Primorigen Biosciences, 510 Charmany Drive, Madison, WI 53719, USA
| | - Niels-Bjarne Woods
- Department of Molecular Medicine and Gene Therapy, Lund Stem Cell Center, Lund University, BMC A12, 221 84 Lund, Sweden.
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48
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Clonal analysis identifies hemogenic endothelium as the source of the blood-endothelial common lineage in the mouse embryo. Blood 2014; 124:2523-32. [PMID: 25139355 DOI: 10.1182/blood-2013-12-545939] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Abstract
The first blood and endothelial cells of amniote embryos appear in close association in the blood islands of the yolk sac (YS). This association and in vitro lineage analyses have suggested a common origin from mesodermal precursors called hemangioblasts, specified in the primitive streak during gastrulation. Fate mapping and chimera studies, however, failed to provide strong evidence for a common origin in the early mouse YS. Additional in vitro studies suggest instead that mesodermal precursors first generate hemogenic endothelium, which then generate blood cells in a linear sequence. We conducted an in vivo clonal analysis to determine the potential of individual cells in the mouse epiblast, primitive streak, and early YS. We found that early YS blood and endothelial lineages mostly derive from independent epiblast populations, specified before gastrulation. Additionally, a subpopulation of the YS endothelium has hemogenic activity and displays characteristics similar to those found later in the embryonic hemogenic endothelium. Our results show that the earliest blood and endothelial cell populations in the mouse embryo are specified independently, and that hemogenic endothelium first appears in the YS and produces blood precursors with markers related to definitive hematopoiesis.
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49
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Kim JD, Lee HW, Jin SW. Diversity is in my veins: role of bone morphogenetic protein signaling during venous morphogenesis in zebrafish illustrates the heterogeneity within endothelial cells. Arterioscler Thromb Vasc Biol 2014; 34:1838-45. [PMID: 25060789 DOI: 10.1161/atvbaha.114.303219] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Endothelial cells are a highly diverse group of cells which display distinct cellular responses to exogenous stimuli. Although the aptly named vascular endothelial growth factor-A signaling pathway is hailed as the most important signaling input for endothelial cells, additional factors also participate in regulating diverse aspects of endothelial behaviors and functions. Given this heterogeneity, these additional factors seem to play a critical role in creating a custom-tailored environment to regulate behaviors and functions of distinct subgroups of endothelial cells. For instance, molecular cues that modulate morphogenesis of arterial vascular beds can be distinct from those that govern morphogenesis of venous vascular beds. Recently, we have found that bone morphogenetic protein signaling selectively promotes angiogenesis from venous vascular beds without eliciting similar responses from arterial vascular beds in zebrafish, indicating that bone morphogenetic protein signaling functions as a context-dependent regulator during vascular morphogenesis. In this review, we will provide an overview of the molecular mechanisms that underlie proangiogenic effects of bone morphogenetic protein signaling on venous vascular beds in the context of endothelial heterogeneity and suggest a more comprehensive picture of the molecular mechanisms of vascular morphogenesis during development.
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Affiliation(s)
- Jun-Dae Kim
- From the Yale Cardiovascular Research Center, Section of Cardiovascular Medicine (J.-D.K., H.W.L., S.-W.J.) and Department of Internal Medicine (J.-D.K., H.W.L., S.-W.J.), Yale University School of Medicine, New Haven, CT; and School of Life Sciences, Gwangju Institute of Science and Technology, Gwangju, Korea (S.-W.J.)
| | - Heon-Woo Lee
- From the Yale Cardiovascular Research Center, Section of Cardiovascular Medicine (J.-D.K., H.W.L., S.-W.J.) and Department of Internal Medicine (J.-D.K., H.W.L., S.-W.J.), Yale University School of Medicine, New Haven, CT; and School of Life Sciences, Gwangju Institute of Science and Technology, Gwangju, Korea (S.-W.J.)
| | - Suk-Won Jin
- From the Yale Cardiovascular Research Center, Section of Cardiovascular Medicine (J.-D.K., H.W.L., S.-W.J.) and Department of Internal Medicine (J.-D.K., H.W.L., S.-W.J.), Yale University School of Medicine, New Haven, CT; and School of Life Sciences, Gwangju Institute of Science and Technology, Gwangju, Korea (S.-W.J.).
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