1
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Fowler JL, Zheng SL, Nguyen A, Chen A, Xiong X, Chai T, Chen JY, Karigane D, Banuelos AM, Niizuma K, Kayamori K, Nishimura T, Cromer MK, Gonzalez-Perez D, Mason C, Liu DD, Yilmaz L, Miquerol L, Porteus MH, Luca VC, Majeti R, Nakauchi H, Red-Horse K, Weissman IL, Ang LT, Loh KM. Lineage-tracing hematopoietic stem cell origins in vivo to efficiently make human HLF+ HOXA+ hematopoietic progenitors from pluripotent stem cells. Dev Cell 2024; 59:1110-1131.e22. [PMID: 38569552 PMCID: PMC11072092 DOI: 10.1016/j.devcel.2024.03.003] [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: 08/21/2023] [Revised: 12/05/2023] [Accepted: 03/01/2024] [Indexed: 04/05/2024]
Abstract
The developmental origin of blood-forming hematopoietic stem cells (HSCs) is a longstanding question. Here, our non-invasive genetic lineage tracing in mouse embryos pinpoints that artery endothelial cells generate HSCs. Arteries are transiently competent to generate HSCs for 2.5 days (∼E8.5-E11) but subsequently cease, delimiting a narrow time frame for HSC formation in vivo. Guided by the arterial origins of blood, we efficiently and rapidly differentiate human pluripotent stem cells (hPSCs) into posterior primitive streak, lateral mesoderm, artery endothelium, hemogenic endothelium, and >90% pure hematopoietic progenitors within 10 days. hPSC-derived hematopoietic progenitors generate T, B, NK, erythroid, and myeloid cells in vitro and, critically, express hallmark HSC transcription factors HLF and HOXA5-HOXA10, which were previously challenging to upregulate. We differentiated hPSCs into highly enriched HLF+ HOXA+ hematopoietic progenitors with near-stoichiometric efficiency by blocking formation of unwanted lineages at each differentiation step. hPSC-derived HLF+ HOXA+ hematopoietic progenitors could avail both basic research and cellular therapies.
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Affiliation(s)
- Jonas L Fowler
- Institute for Stem Cell Biology & Regenerative Medicine, Stanford University, Stanford, CA 94305, USA; Department of Developmental Biology, Stanford University, Stanford, CA 94305, USA
| | - Sherry Li Zheng
- Institute for Stem Cell Biology & Regenerative Medicine, Stanford University, Stanford, CA 94305, USA; Department of Developmental Biology, Stanford University, Stanford, CA 94305, USA
| | - Alana Nguyen
- Institute for Stem Cell Biology & Regenerative Medicine, Stanford University, Stanford, CA 94305, USA; Department of Developmental Biology, Stanford University, Stanford, CA 94305, USA
| | - Angela Chen
- Institute for Stem Cell Biology & Regenerative Medicine, Stanford University, Stanford, CA 94305, USA; Department of Developmental Biology, Stanford University, Stanford, CA 94305, USA
| | - Xiaochen Xiong
- Institute for Stem Cell Biology & Regenerative Medicine, Stanford University, Stanford, CA 94305, USA; Department of Developmental Biology, Stanford University, Stanford, CA 94305, USA
| | - Timothy Chai
- Institute for Stem Cell Biology & Regenerative Medicine, Stanford University, Stanford, CA 94305, USA; Department of Developmental Biology, Stanford University, Stanford, CA 94305, USA
| | - Julie Y Chen
- Institute for Stem Cell Biology & Regenerative Medicine, Stanford University, Stanford, CA 94305, USA; Department of Developmental Biology, Stanford University, Stanford, CA 94305, USA
| | - Daiki Karigane
- Institute for Stem Cell Biology & Regenerative Medicine, Stanford University, Stanford, CA 94305, USA; Division of Hematology, Department of Medicine, Stanford University, Stanford, CA 94305, USA
| | - Allison M Banuelos
- Institute for Stem Cell Biology & Regenerative Medicine, Stanford University, Stanford, CA 94305, USA; Department of Pathology, Stanford University, Stanford, CA 94305, USA
| | - Kouta Niizuma
- Institute for Stem Cell Biology & Regenerative Medicine, Stanford University, Stanford, CA 94305, USA; Department of Genetics, Stanford University, Stanford, CA 94305, USA
| | - Kensuke Kayamori
- Institute for Stem Cell Biology & Regenerative Medicine, Stanford University, Stanford, CA 94305, USA; Division of Hematology, Department of Medicine, Stanford University, Stanford, CA 94305, USA
| | - Toshinobu Nishimura
- Institute for Stem Cell Biology & Regenerative Medicine, Stanford University, Stanford, CA 94305, USA; Department of Genetics, Stanford University, Stanford, CA 94305, USA
| | - M Kyle Cromer
- Department of Surgery, University of California, San Francisco, San Francisco, CA 94143, USA
| | | | - Charlotte Mason
- Department of Drug Discovery, Moffitt Cancer Center, Tampa, FL 33612, USA
| | - Daniel Dan Liu
- Institute for Stem Cell Biology & Regenerative Medicine, Stanford University, Stanford, CA 94305, USA; Department of Pathology, Stanford University, Stanford, CA 94305, USA
| | - Leyla Yilmaz
- Institute for Stem Cell Biology & Regenerative Medicine, Stanford University, Stanford, CA 94305, USA; Department of Pathology, Stanford University, Stanford, CA 94305, USA
| | - Lucile Miquerol
- Aix-Marseille Université, CNRS UMR 7288, IBDM, Marseille 13288, France
| | - Matthew H Porteus
- Institute for Stem Cell Biology & Regenerative Medicine, Stanford University, Stanford, CA 94305, USA; Department of Pediatrics, Stanford University, Stanford, CA 94305, USA
| | - Vincent C Luca
- Department of Drug Discovery, Moffitt Cancer Center, Tampa, FL 33612, USA
| | - Ravindra Majeti
- Institute for Stem Cell Biology & Regenerative Medicine, Stanford University, Stanford, CA 94305, USA; Division of Hematology, Department of Medicine, Stanford University, Stanford, CA 94305, USA
| | - Hiromitsu Nakauchi
- Institute for Stem Cell Biology & Regenerative Medicine, Stanford University, Stanford, CA 94305, USA; Department of Genetics, Stanford University, Stanford, CA 94305, USA
| | - Kristy Red-Horse
- Institute for Stem Cell Biology & Regenerative Medicine, Stanford University, Stanford, CA 94305, USA; Department of Biology, Howard Hughes Medical Institute, Stanford University, Stanford, CA 94305, USA
| | - Irving L Weissman
- Institute for Stem Cell Biology & Regenerative Medicine, Stanford University, Stanford, CA 94305, USA; Department of Pathology, Stanford University, Stanford, CA 94305, USA
| | - Lay Teng Ang
- Institute for Stem Cell Biology & Regenerative Medicine, Stanford University, Stanford, CA 94305, USA.
| | - Kyle M Loh
- Institute for Stem Cell Biology & Regenerative Medicine, Stanford University, Stanford, CA 94305, USA; Department of Developmental Biology, Stanford University, Stanford, CA 94305, USA.
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2
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Liu Y, Shi L, Chen Y, Luo S, Chen Y, Chen H, Lan W, Lu X, Cao Z, Ye Z, Li J, Yu B, Dzierzak E, Li Z. Autophagy regulates the maturation of hematopoietic precursors in the embryo. Nat Commun 2024; 15:2255. [PMID: 38490977 PMCID: PMC10943005 DOI: 10.1038/s41467-024-46453-y] [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: 08/25/2023] [Accepted: 02/28/2024] [Indexed: 03/18/2024] Open
Abstract
An understanding of the mechanisms regulating embryonic hematopoietic stem cell (HSC) development would facilitate their regeneration. The aorta-gonad-mesonephros region is the site for HSC production from hemogenic endothelial cells (HEC). While several distinct regulators are involved in this process, it is not yet known whether macroautophagy (autophagy) plays a role in hematopoiesis in the pre-liver stage. Here, we show that different states of autophagy exist in hematopoietic precursors and correlate with hematopoietic potential based on the LC3-RFP-EGFP mouse model. Deficiency of autophagy-related gene 5 (Atg5) specifically in endothelial cells disrupts endothelial to hematopoietic transition (EHT), by blocking the autophagic process. Using combined approaches, including single-cell RNA-sequencing (scRNA-seq), we have confirmed that Atg5 deletion interrupts developmental temporal order of EHT to further affect the pre-HSC I maturation, and that autophagy influences hemogenic potential of HEC and the formation of pre-HSC I likely via the nucleolin pathway. These findings demonstrate a role for autophagy in the formation/maturation of hematopoietic precursors.
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Affiliation(s)
- Yumin Liu
- Key Laboratory of Functional Proteomics of Guangdong Province, Department of Developmental Biology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
| | - Linjuan Shi
- Key Laboratory of Functional Proteomics of Guangdong Province, Department of Developmental Biology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
| | - Yifan Chen
- Key Laboratory of Functional Proteomics of Guangdong Province, Department of Developmental Biology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
| | - Sifan Luo
- Key Laboratory of Functional Proteomics of Guangdong Province, Department of Developmental Biology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
| | - Yuehang Chen
- Key Laboratory of Functional Proteomics of Guangdong Province, Department of Developmental Biology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
| | - Hongtian Chen
- Key Laboratory of Functional Proteomics of Guangdong Province, Department of Developmental Biology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
| | - Wenlang Lan
- Key Laboratory of Functional Proteomics of Guangdong Province, Department of Developmental Biology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
| | - Xun Lu
- Key Laboratory of Functional Proteomics of Guangdong Province, Department of Developmental Biology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
| | - Zhan Cao
- Key Laboratory of Functional Proteomics of Guangdong Province, Department of Developmental Biology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
| | - Zehua Ye
- Key Laboratory of Functional Proteomics of Guangdong Province, Department of Developmental Biology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
| | - Jinping Li
- Key Laboratory of Functional Proteomics of Guangdong Province, Department of Developmental Biology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
| | - Bo Yu
- Institute of Hematology, School of Medicine, Jinan University, Guangzhou, China
| | - Elaine Dzierzak
- Centre for Inflammation Research, The University of Edinburgh, Edinburgh, UK
| | - Zhuan Li
- Key Laboratory of Functional Proteomics of Guangdong Province, Department of Developmental Biology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China.
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3
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Imaz-Rosshandler I, Rode C, Guibentif C, Harland LTG, Ton MLN, Dhapola P, Keitley D, Argelaguet R, Calero-Nieto FJ, Nichols J, Marioni JC, de Bruijn MFTR, Göttgens B. Tracking early mammalian organogenesis - prediction and validation of differentiation trajectories at whole organism scale. Development 2024; 151:dev201867. [PMID: 37982461 PMCID: PMC10906099 DOI: 10.1242/dev.201867] [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: 04/12/2023] [Accepted: 10/30/2023] [Indexed: 11/21/2023]
Abstract
Early organogenesis represents a key step in animal development, during which pluripotent cells diversify to initiate organ formation. Here, we sampled 300,000 single-cell transcriptomes from mouse embryos between E8.5 and E9.5 in 6-h intervals and combined this new dataset with our previous atlas (E6.5-E8.5) to produce a densely sampled timecourse of >400,000 cells from early gastrulation to organogenesis. Computational lineage reconstruction identified complex waves of blood and endothelial development, including a new programme for somite-derived endothelium. We also dissected the E7.5 primitive streak into four adjacent regions, performed scRNA-seq and predicted cell fates computationally. Finally, we defined developmental state/fate relationships by combining orthotopic grafting, microscopic analysis and scRNA-seq to transcriptionally determine cell fates of grafted primitive streak regions after 24 h of in vitro embryo culture. Experimentally determined fate outcomes were in good agreement with computationally predicted fates, demonstrating how classical grafting experiments can be revisited to establish high-resolution cell state/fate relationships. Such interdisciplinary approaches will benefit future studies in developmental biology and guide the in vitro production of cells for organ regeneration and repair.
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Affiliation(s)
- Ivan Imaz-Rosshandler
- Department of Haematology, University of Cambridge, Cambridge CB2 0RE, UK
- Wellcome-Medical Research Council Cambridge Stem Cell Institute, University of Cambridge, Cambridge CB2 0AW, UK
- MRC Laboratory of Molecular Biology, Cambridge CB2 0QH, UK
| | - Christina Rode
- MRC Molecular Haematology Unit, MRC Weatherall Institute of Molecular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford OX3 9DS, UK
| | - Carolina Guibentif
- Department of Microbiology and Immunology, University of Gothenburg, 405 30 Gothenburg, Sweden
| | - Luke T. G. Harland
- Department of Haematology, University of Cambridge, Cambridge CB2 0RE, UK
- Wellcome-Medical Research Council Cambridge Stem Cell Institute, University of Cambridge, Cambridge CB2 0AW, UK
| | - Mai-Linh N. Ton
- Department of Haematology, University of Cambridge, Cambridge CB2 0RE, UK
- Wellcome-Medical Research Council Cambridge Stem Cell Institute, University of Cambridge, Cambridge CB2 0AW, UK
| | - Parashar Dhapola
- Division of Molecular Hematology, Lund Stem Cell Center, Lund University, 221 00 Lund, Sweden
| | - Daniel Keitley
- Department of Zoology, University of Cambridge, Cambridge CB2 3EJ, UK
| | - Ricard Argelaguet
- Epigenetics Programme, Babraham Institute, Cambridge CB22 3AT, UK
- Altos Labs Cambridge Institute, Granta Park, Cambridge CB21 6GP, UK
| | - Fernando J. Calero-Nieto
- Wellcome-Medical Research Council Cambridge Stem Cell Institute, University of Cambridge, Cambridge CB2 0AW, UK
| | - Jennifer Nichols
- Wellcome-Medical Research Council Cambridge Stem Cell Institute, University of Cambridge, Cambridge CB2 0AW, UK
| | - John C. Marioni
- Wellcome Sanger Institute, Wellcome Genome Campus, Saffron Walden CB10 1SA, UK
- European Molecular Biology Laboratory, European Bioinformatics Institute, Saffron Walden CB10 1SA, UK
- Cancer Research UK Cambridge Institute, University of Cambridge, Cambridge CB2 0RE, UK
| | - Marella F. T. R. de Bruijn
- MRC Molecular Haematology Unit, MRC Weatherall Institute of Molecular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford OX3 9DS, UK
| | - Berthold Göttgens
- Department of Haematology, University of Cambridge, Cambridge CB2 0RE, UK
- Wellcome-Medical Research Council Cambridge Stem Cell Institute, University of Cambridge, Cambridge CB2 0AW, UK
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4
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Crosse EI, Binagui-Casas A, Gordon-Keylock S, Rybtsov S, Tamagno S, Olofsson D, Anderson RA, Medvinsky A. An interactive resource of molecular signalling in the developing human haematopoietic stem cell niche. Development 2023; 150:dev201972. [PMID: 37840454 PMCID: PMC10730088 DOI: 10.1242/dev.201972] [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: 05/09/2023] [Accepted: 10/03/2023] [Indexed: 10/17/2023]
Abstract
The emergence of definitive human haematopoietic stem cells (HSCs) from Carnegie Stage (CS) 14 to CS17 in the aorta-gonad-mesonephros (AGM) region is a tightly regulated process. Previously, we conducted spatial transcriptomic analysis of the human AGM region at the end of this period (CS16/CS17) and identified secreted factors involved in HSC development. Here, we extend our analysis to investigate the progression of dorso-ventral polarised signalling around the dorsal aorta over the entire period of HSC emergence. Our results reveal a dramatic increase in ventral signalling complexity from the CS13-CS14 transition, coinciding with the first appearance of definitive HSCs. We further observe stage-specific changes in signalling up to CS17, which may underpin the step-wise maturation of HSCs described in the mouse model. The data-rich resource is also presented in an online interface enabling in silico analysis of molecular interactions between spatially defined domains of the AGM region. This resource will be of particular interest for researchers studying mechanisms underlying human HSC development as well as those developing in vitro methods for the generation of clinically relevant HSCs from pluripotent stem cells.
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Affiliation(s)
- Edie I. Crosse
- Centre for Regenerative Medicine, University of Edinburgh, Edinburgh EH16 4UU, UK
| | - Anahi Binagui-Casas
- Centre for Regenerative Medicine, University of Edinburgh, Edinburgh EH16 4UU, UK
| | | | - Stanislav Rybtsov
- Centre for Regenerative Medicine, University of Edinburgh, Edinburgh EH16 4UU, UK
| | - Sara Tamagno
- Centre for Regenerative Medicine, University of Edinburgh, Edinburgh EH16 4UU, UK
| | - Didrik Olofsson
- Omiqa Bioinformatics GmbH, Altensteinstraße 40, 14195 Berlin, Germany
| | - Richard A. Anderson
- MRC Centre for Reproductive Health, University of Edinburgh, Edinburgh EH16 4TJ, UK
| | - Alexander Medvinsky
- Centre for Regenerative Medicine, University of Edinburgh, Edinburgh EH16 4UU, UK
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5
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Vink CS, Popravko A, Dzierzak E. De novo hematopoietic (stem) cell generation - A differentiation or stochastic process? Curr Opin Cell Biol 2023; 85:102255. [PMID: 37806296 DOI: 10.1016/j.ceb.2023.102255] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2023] [Revised: 08/28/2023] [Accepted: 09/10/2023] [Indexed: 10/10/2023]
Abstract
The hematopoietic system is one of the earliest tissues to develop. De novo generation of hematopoietic progenitor and stem cells occurs through a transdifferentiation of (hemogenic) endothelial cells to hematopoietic identity, resulting in the formation of intra-aortic hematopoietic cluster (IAHC) cells. Heterogeneity of IAHC cell phenotypes and functions has stymied the field in its search for the transcriptional program of emerging hematopoietic stem cells (HSCs), given that an individual IAHC cannot be simultaneously examined for function and transcriptome. Several models could account for this heterogeneity, including a novel model suggesting that the transcriptomes of individual emerging IAHC cells are in an unstable/metastable state, with pivotal hematopoietic transcription factors expressed dynamically due to transcriptional pulsing and combinatorial activities. The question remains - how is functional hematopoietic cell fate established - is the process stochastic? This article touches upon these important issues, which may be relevant to the field's inability to make HSCs ex vivo.
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Affiliation(s)
- Chris S Vink
- The University of Edinburgh, Centre for Inflammation Research, Edinburgh, Midlothian, Scotland, EH16 4UU, UK
| | - Anna Popravko
- The University of Edinburgh, Centre for Inflammation Research, Edinburgh, Midlothian, Scotland, EH16 4UU, UK
| | - Elaine Dzierzak
- The University of Edinburgh, Centre for Inflammation Research, Edinburgh, Midlothian, Scotland, EH16 4UU, UK.
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6
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Pohl L, Schiessl IM. Endothelial cell plasticity in kidney fibrosis and disease. Acta Physiol (Oxf) 2023; 239:e14038. [PMID: 37661749 DOI: 10.1111/apha.14038] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2023] [Revised: 07/29/2023] [Accepted: 08/11/2023] [Indexed: 09/05/2023]
Abstract
Renal endothelial cells demonstrate an impressive remodeling potential during angiogenic sprouting, vessel repair or while transitioning into mesenchymal cells. These different processes may play important roles in both renal disease progression or regeneration while underlying signaling pathways of different endothelial cell plasticity routes partly overlap. Angiogenesis contributes to wound healing after kidney injury and pharmaceutical modulation of angiogenesis may home a great therapeutic potential. Yet, it is not clear whether any differentiated endothelial cell can proliferate or whether regenerative processes are largely controlled by resident or circulating endothelial progenitor cells. In the glomerular compartment for example, a distinct endothelial progenitor cell population may remodel the glomerular endothelium after injury. Endothelial-to-mesenchymal transition (EndoMT) in the kidney is vastly documented and often associated with endothelial dysfunction, fibrosis, and kidney disease progression. Especially the role of EndoMT in renal fibrosis is controversial. Studies on EndoMT in vivo determined possible conclusions on the pathophysiological role of EndoMT in the kidney, but whether endothelial cells really contribute to kidney fibrosis and if not what other cellular and functional outcomes derive from EndoMT in kidney disease is unclear. Sequencing data, however, suggest no participation of endothelial cells in extracellular matrix deposition. Thus, more in-depth classification of cellular markers and the fate of EndoMT cells in the kidney is needed. In this review, we describe different signaling pathways of endothelial plasticity, outline methodological approaches and evidence for functional and structural implications of angiogenesis and EndoMT in the kidney, and eventually discuss controversial aspects in the literature.
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Affiliation(s)
- Layla Pohl
- Department of Biomedicine, Aarhus University, Aarhus, Denmark
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7
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Coulombe P, Cole G, Fentiman A, Parker JDK, Yung E, Bilenky M, Degefie L, Lac P, Ling MYM, Tam D, Humphries RK, Karsan A. Meis1 establishes the pre-hemogenic endothelial state prior to Runx1 expression. Nat Commun 2023; 14:4537. [PMID: 37500618 PMCID: PMC10374625 DOI: 10.1038/s41467-023-40283-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2022] [Accepted: 07/20/2023] [Indexed: 07/29/2023] Open
Abstract
Hematopoietic stem and progenitor cells (HSPCs) originate from an endothelial-to-hematopoietic transition (EHT) during embryogenesis. Characterization of early hemogenic endothelial (HE) cells is required to understand what drives hemogenic specification and to accurately define cells capable of undergoing EHT. Using Cellular Indexing of Transcriptomes and Epitopes by Sequencing (CITE-seq), we define the early subpopulation of pre-HE cells based on both surface markers and transcriptomes. We identify the transcription factor Meis1 as an essential regulator of hemogenic cell specification in the embryo prior to Runx1 expression. Meis1 is expressed at the earliest stages of EHT and distinguishes pre-HE cells primed towards the hemogenic trajectory from the arterial endothelial cells that continue towards a vascular fate. Endothelial-specific deletion of Meis1 impairs the formation of functional Runx1-expressing HE which significantly impedes the emergence of pre-HSPC via EHT. Our findings implicate Meis1 in a critical fate-determining step for establishing EHT potential in endothelial cells.
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Affiliation(s)
- Patrick Coulombe
- Michael Smith Genome Sciences Centre, BC Cancer, 675 West 10th Avenue, Vancouver, BC, V5Z 1L3, Canada
- Department of Experimental Medicine, University of British Columbia, Vancouver, BC, V6T 2B5, Canada
| | - Grace Cole
- Michael Smith Genome Sciences Centre, BC Cancer, 675 West 10th Avenue, Vancouver, BC, V5Z 1L3, Canada
- Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, BC, V6T 2B5, Canada
| | - Amanda Fentiman
- Michael Smith Genome Sciences Centre, BC Cancer, 675 West 10th Avenue, Vancouver, BC, V5Z 1L3, Canada
- Interdisciplinary Oncology Program, University of British Columbia, Vancouver, BC, V6T 2B5, Canada
| | - Jeremy D K Parker
- Michael Smith Genome Sciences Centre, BC Cancer, 675 West 10th Avenue, Vancouver, BC, V5Z 1L3, Canada
| | - Eric Yung
- Terry Fox Laboratory, BC Cancer, 675 West 10th Avenue, Vancouver, BC, V5Z 1L3, Canada
| | - Misha Bilenky
- Michael Smith Genome Sciences Centre, BC Cancer, 675 West 10th Avenue, Vancouver, BC, V5Z 1L3, Canada
| | - Lemlem Degefie
- Michael Smith Genome Sciences Centre, BC Cancer, 675 West 10th Avenue, Vancouver, BC, V5Z 1L3, Canada
| | - Patrick Lac
- Michael Smith Genome Sciences Centre, BC Cancer, 675 West 10th Avenue, Vancouver, BC, V5Z 1L3, Canada
| | - Maggie Y M Ling
- Michael Smith Genome Sciences Centre, BC Cancer, 675 West 10th Avenue, Vancouver, BC, V5Z 1L3, Canada
| | - Derek Tam
- Michael Smith Genome Sciences Centre, BC Cancer, 675 West 10th Avenue, Vancouver, BC, V5Z 1L3, Canada
| | - R Keith Humphries
- Terry Fox Laboratory, BC Cancer, 675 West 10th Avenue, Vancouver, BC, V5Z 1L3, Canada
- Department of Medical Genetics, University of British Columbia, Vancouver, BC, V6T 2B5, Canada
| | - Aly Karsan
- Michael Smith Genome Sciences Centre, BC Cancer, 675 West 10th Avenue, Vancouver, BC, V5Z 1L3, Canada.
- Department of Experimental Medicine, University of British Columbia, Vancouver, BC, V6T 2B5, Canada.
- Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, BC, V6T 2B5, Canada.
- Interdisciplinary Oncology Program, University of British Columbia, Vancouver, BC, V6T 2B5, Canada.
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8
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Maytum A, Edginton-White B, Bonifer C. Identification and characterization of enhancer elements controlling cell type-specific and signalling dependent chromatin programming during hematopoietic development. Stem Cell Investig 2023; 10:14. [PMID: 37404470 PMCID: PMC10316067 DOI: 10.21037/sci-2023-011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Accepted: 05/24/2023] [Indexed: 07/06/2023]
Abstract
The development of multi-cellular organisms from a single fertilized egg requires to differentially execute the information encoded in our DNA. This complex process is regulated by the interplay of transcription factors with a chromatin environment, both of which provide the epigenetic information maintaining cell-type specific gene expression patterns. Moreover, transcription factors and their target genes form vast interacting gene regulatory networks which can be exquisitely stable. However, all developmental processes originate from pluripotent precursor cell types. The production of terminally differentiated cells from such cells, therefore, requires successive changes of cell fates, meaning that genes relevant for the next stage of differentiation must be switched on and genes not relevant anymore must be switched off. The stimulus for the change of cell fate originates from extrinsic signals which set a cascade of intracellular processes in motion that eventually terminate at the genome leading to changes in gene expression and the development of alternate gene regulatory networks. How developmental trajectories are encoded in the genome and how the interplay between intrinsic and extrinsic processes regulates development is one of the major questions in developmental biology. The development of the hematopoietic system has long served as model to understand how changes in gene regulatory networks drive the differentiation of the various blood cell types. In this review, we highlight the main signals and transcription factors and how they are integrated at the level of chromatin programming and gene expression control. We also highlight recent studies identifying the cis-regulatory elements such as enhancers at the global level and explain how their developmental activity is regulated by the cooperation of cell-type specific and ubiquitous transcription factors with extrinsic signals.
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Affiliation(s)
- Alexander Maytum
- Institute of Cancer and Genomic Sciences, School of Medicine and Dentistry, University of Birmingham, Birmingham, UK
| | - Ben Edginton-White
- Institute of Cancer and Genomic Sciences, School of Medicine and Dentistry, University of Birmingham, Birmingham, UK
| | - Constanze Bonifer
- Institute of Cancer and Genomic Sciences, School of Medicine and Dentistry, University of Birmingham, Birmingham, UK
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9
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Shevyrev D, Tereshchenko V, Berezina TN, Rybtsov S. Hematopoietic Stem Cells and the Immune System in Development and Aging. Int J Mol Sci 2023; 24:ijms24065862. [PMID: 36982935 PMCID: PMC10056303 DOI: 10.3390/ijms24065862] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2022] [Revised: 03/13/2023] [Accepted: 03/16/2023] [Indexed: 03/30/2023] Open
Abstract
Hematopoietic stem cells (HSCs) support haematopoiesis throughout life and give rise to the whole variety of cells of the immune system. Developing in the early embryo, passing through the precursor stage, and maturing into the first HSCs, they undergo a fairly large number of divisions while maintaining a high regenerative potential due to high repair activity. This potential is greatly reduced in adult HSCs. They go into a state of dormancy and anaerobic metabolism to maintain their stemness throughout life. However, with age, changes occur in the pool of HSCs that negatively affect haematopoiesis and the effectiveness of immunity. Niche aging and accumulation of mutations with age reduces the ability of HSCs to self-renew and changes their differentiation potential. This is accompanied by a decrease in clonal diversity and a disturbance of lymphopoiesis (decrease in the formation of naive T- and B-cells) and the predominance of myeloid haematopoiesis. Aging also affects mature cells, regardless of HSC, therefore, phagocytic activity and the intensity of the oxidative burst decrease, and the efficiency of processing and presentation of antigens by myeloid cells is impaired. Aging cells of innate and adaptive immunity produce factors that form a chronic inflammatory background. All these processes have a serious negative impact on the protective properties of the immune system, increasing inflammation, the risk of developing autoimmune, oncological, and cardiovascular diseases with age. Understanding the mechanisms of reducing the regenerative potential in a comparative analysis of embryonic and aging HSCs, the features of inflammatory aging will allow us to get closer to deciphering the programs for the development, aging, regeneration and rejuvenation of HSCs and the immune system.
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Affiliation(s)
- Daniil Shevyrev
- Centre for Cell Technology and Immunology, Sirius University of Science and Technology, Sirius, 354340 Sochi, Russia
| | - Valeriy Tereshchenko
- Centre for Cell Technology and Immunology, Sirius University of Science and Technology, Sirius, 354340 Sochi, Russia
| | - Tatiana N Berezina
- Department of Scientific Basis of Extreme Psychology, Moscow State University of Psychology and Education, 127051 Moscow, Russia
| | - Stanislav Rybtsov
- Centre for Cell Technology and Immunology, Sirius University of Science and Technology, Sirius, 354340 Sochi, Russia
- Centre for Regenerative Medicine, University of Edinburgh, Edinburgh EH8 9YL, UK
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10
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Vink CS, Dzierzak E. The (intra-aortic) hematopoietic cluster cocktail: what is in the mix? Exp Hematol 2023; 118:1-11. [PMID: 36529317 DOI: 10.1016/j.exphem.2022.12.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Revised: 12/08/2022] [Accepted: 12/09/2022] [Indexed: 12/23/2022]
Abstract
The adult-definitive hematopoietic hierarchy and hematopoietic stem cells (HSCs) residing in the bone marrow are established during embryonic development. In mouse, human, and many other mammals, it is the sudden formation of so-called intra-aortic/arterial hematopoietic clusters (IAHCs) that best signifies and visualizes this de novo generation of HSCs and hematopoietic progenitor cells (HPCs). Cluster cells arise through an endothelial-to-hematopoietic transition and, for some time, express markers/genes of both tissue types, whilst acquiring more hematopoietic features and losing endothelial ones. Among several hundreds of IAHC cells, the midgestation mouse embryo contains only very few bona fide adult-repopulating HSCs, suggestive of a challenging cell fate to achieve. Most others are HPCs of various types, some of which have the potential to mature into HSCs in vitro. Based on the number of cells that reveal hematopoietic function, a fraction of IAHC cells is uncharacterized. This review aims to explore the current state of knowledge on IAHC cells. We will describe markers useful for isolation and characterization of these fleetingly produced, yet vitally important, cells and for the refined enrichment of the HSCs they contain, and speculate on the role of some IAHC cells that are as-yet functionally uncharacterized.
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Affiliation(s)
- Chris S Vink
- The University of Edinburgh, Centre for Inflammation Research, Edinburgh, Midlothian, Scotland, UK
| | - Elaine Dzierzak
- The University of Edinburgh, Centre for Inflammation Research, Edinburgh, Midlothian, Scotland, UK.
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11
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De Novo Generation of Human Hematopoietic Stem Cells from Pluripotent Stem Cells for Cellular Therapy. Cells 2023; 12:cells12020321. [PMID: 36672255 PMCID: PMC9857267 DOI: 10.3390/cells12020321] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Revised: 01/02/2023] [Accepted: 01/11/2023] [Indexed: 01/19/2023] Open
Abstract
The ability to manufacture human hematopoietic stem cells (HSCs) in the laboratory holds enormous promise for cellular therapy of human blood diseases. Several differentiation protocols have been developed to facilitate the emergence of HSCs from human pluripotent stem cells (PSCs). Most approaches employ a stepwise addition of cytokines and morphogens to recapitulate the natural developmental process. However, these protocols globally lack clinical relevance and uniformly induce PSCs to produce hematopoietic progenitors with embryonic features and limited engraftment and differentiation capabilities. This review examines how key intrinsic cues and extrinsic environmental inputs have been integrated within human PSC differentiation protocols to enhance the emergence of definitive hematopoiesis and how advances in genomics set the stage for imminent breakthroughs in this field.
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12
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Radmanić L, Zidovec-Lepej S. The Role of Stem Cell Factor, Epidermal Growth Factor and Angiopoietin-2 in HBV, HCV, HCC and NAFLD. LIFE (BASEL, SWITZERLAND) 2022; 12:life12122072. [PMID: 36556437 PMCID: PMC9786337 DOI: 10.3390/life12122072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Revised: 12/05/2022] [Accepted: 12/08/2022] [Indexed: 12/14/2022]
Abstract
Growth factors play a significant role in the immunopathogenesis of liver diseases, especially in liver fibrosis and cirrhosis. They can also play a role in liver regeneration and tissue repair. The regenerative capacity of the liver has been well established. Molecular mechanisms leading to regeneration involve a complex network of diverse molecules. Chronic liver injury leads to the dysregulation of regenerative mechanisms in the liver that, in addition to molecular oncogenesis, lead to uncontrolled cell proliferation and development of hepatocellular carcinoma (HCC). Stem cell factor (SCF), epidermal growth factor (EGF) and Angiopietin-2 (Ang-2) have been shown to be extremely important in the pathogenesis of liver diseases, and given their role in hepatitis B (HBV) or C virus (HCV), HCC and nonalcoholic fatty liver disease (NAFLD), they seem to be potential targets for future research into antifibrotic drugs. The role of SCF receptor c-kit in the liver is debatable, as it has impact on both liver regeneration and liver disease. EGF is a potential indicator of the survival of patients with HCC and can be a biomarker and therapeutic target structure in HCC. Further research is needed to investigate the potential role of Ang-2 for NAFLD associated with liver damage as a non-invasive circulating biomarker.
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13
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Zaidan N, Nitsche L, Diamanti E, Hannah R, Fidanza A, Wilson NK, Forrester LM, Göttgens B, Ottersbach K. Endothelial-specific Gata3 expression is required for hematopoietic stem cell generation. Stem Cell Reports 2022; 17:1788-1798. [PMID: 35905741 PMCID: PMC9391417 DOI: 10.1016/j.stemcr.2022.06.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Revised: 06/23/2022] [Accepted: 06/27/2022] [Indexed: 11/23/2022] Open
Abstract
To generate sufficient numbers of transplantable hematopoietic stem cells (HSCs) in vitro, a detailed understanding of how this process takes place in vivo is essential. The endothelial-to-hematopoietic transition (EHT), which culminates in the production of the first HSCs, is a highly complex process during which key regulators are switched on and off at precise moments, and that is embedded into a myriad of microenvironmental signals from surrounding cells and tissues. We have previously demonstrated an HSC-supportive function for GATA3 within the sympathetic nervous system and the sub-aortic mesenchyme, but show here that it also plays a cell-intrinsic role during the EHT. It is expressed in hemogenic endothelial cells and early HSC precursors, where its expression correlates with a more quiescent state. Importantly, endothelial-specific deletion of Gata3 shows that it is functionally required for these cells to mature into HSCs, placing GATA3 at the core of the EHT regulatory network.
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Affiliation(s)
- Nada Zaidan
- Centre for Regenerative Medicine, Institute for Regeneration and Repair, University of Edinburgh, Edinburgh EH16 4UU, UK; Department of Haematology, Wellcome Trust-Medical Research Council Cambridge Stem Cell Institute, University of Cambridge, Cambridge CB2 0AW, UK
| | - Leslie Nitsche
- Centre for Regenerative Medicine, Institute for Regeneration and Repair, University of Edinburgh, Edinburgh EH16 4UU, UK
| | - Evangelia Diamanti
- Department of Haematology, Wellcome Trust-Medical Research Council Cambridge Stem Cell Institute, University of Cambridge, Cambridge CB2 0AW, UK
| | - Rebecca Hannah
- Department of Haematology, Wellcome Trust-Medical Research Council Cambridge Stem Cell Institute, University of Cambridge, Cambridge CB2 0AW, UK
| | - Antonella Fidanza
- Centre for Regenerative Medicine, Institute for Regeneration and Repair, University of Edinburgh, Edinburgh EH16 4UU, UK
| | - Nicola K Wilson
- Department of Haematology, Wellcome Trust-Medical Research Council Cambridge Stem Cell Institute, University of Cambridge, Cambridge CB2 0AW, UK
| | - Lesley M Forrester
- Centre for Regenerative Medicine, Institute for Regeneration and Repair, University of Edinburgh, Edinburgh EH16 4UU, UK
| | - Berthold Göttgens
- Department of Haematology, Wellcome Trust-Medical Research Council Cambridge Stem Cell Institute, University of Cambridge, Cambridge CB2 0AW, UK
| | - Katrin Ottersbach
- Centre for Regenerative Medicine, Institute for Regeneration and Repair, University of Edinburgh, Edinburgh EH16 4UU, UK.
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14
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Kapeni C, Nitsche L, Kilpatrick AM, Wilson NK, Xia K, Mirshekar-Syahkal B, Chandrakanthan V, Malouf C, Pimanda JE, Göttgens B, Kirschner K, Tomlinson SR, Ottersbach K. p57Kip2 regulates embryonic blood stem cells by controlling sympathoadrenal progenitor expansion. Blood 2022; 140:464-477. [PMID: 35653588 PMCID: PMC9353151 DOI: 10.1182/blood.2021014853] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Accepted: 05/13/2022] [Indexed: 11/20/2022] Open
Abstract
Hematopoietic stem cells (HSCs) are of major clinical importance, and finding methods for their in vitro generation is a prime research focus. We show here that the cell cycle inhibitor p57Kip2/Cdkn1c limits the number of emerging HSCs by restricting the size of the sympathetic nervous system (SNS) and the amount of HSC-supportive catecholamines secreted by these cells. This regulation occurs at the SNS progenitor level and is in contrast to the cell-intrinsic function of p57Kip2 in maintaining adult HSCs, highlighting profound differences in cell cycle requirements of adult HSCs compared with their embryonic counterparts. Furthermore, this effect is specific to the aorta-gonad-mesonephros (AGM) region and shows that the AGM is the main contributor to early fetal liver colonization, as early fetal liver HSC numbers are equally affected. Using a range of antagonists in vivo, we show a requirement for intact β2-adrenergic signaling for SNS-dependent HSC expansion. To gain further molecular insights, we have generated a single-cell RNA-sequencing data set of all Ngfr+ sympathoadrenal cells around the dorsal aorta to dissect their differentiation pathway. Importantly, this not only defined the relevant p57Kip2-expressing SNS progenitor stage but also revealed that some neural crest cells, upon arrival at the aorta, are able to take an alternative differentiation pathway, giving rise to a subset of ventrally restricted mesenchymal cells that express important HSC-supportive factors. Neural crest cells thus appear to contribute to the AGM HSC niche via 2 different mechanisms: SNS-mediated catecholamine secretion and HSC-supportive mesenchymal cell production.
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Affiliation(s)
- Chrysa Kapeni
- Centre for Regenerative Medicine, Institute for Regeneration and Repair, University of Edinburgh, Edinburgh, United Kingdom
| | - Leslie Nitsche
- Centre for Regenerative Medicine, Institute for Regeneration and Repair, University of Edinburgh, Edinburgh, United Kingdom
| | - Alastair M Kilpatrick
- Centre for Regenerative Medicine, Institute for Regeneration and Repair, University of Edinburgh, Edinburgh, United Kingdom
| | - Nicola K Wilson
- Department of Haematology, Wellcome Trust-Medical Research Council Cambridge Stem Cell Institute, University of Cambridge, Cambridge, United Kingdom
| | - Kankan Xia
- Department of Haematology, Wellcome Trust-Medical Research Council Cambridge Stem Cell Institute, University of Cambridge, Cambridge, United Kingdom
| | - Bahar Mirshekar-Syahkal
- Department of Haematology, Wellcome Trust-Medical Research Council Cambridge Stem Cell Institute, University of Cambridge, Cambridge, United Kingdom
| | - Vashe Chandrakanthan
- School of Medical Sciences, Lowy Cancer Research Centre, UNSW, Sydney, NSW, Australia
| | - Camille Malouf
- Centre for Regenerative Medicine, Institute for Regeneration and Repair, University of Edinburgh, Edinburgh, United Kingdom
| | - John E Pimanda
- School of Medical Sciences, Lowy Cancer Research Centre, UNSW, Sydney, NSW, Australia
- Department of Haematology, The Prince of Wales Hospital, Sydney, NSW, Australia
| | - Berthold Göttgens
- Department of Haematology, Wellcome Trust-Medical Research Council Cambridge Stem Cell Institute, University of Cambridge, Cambridge, United Kingdom
| | - Kristina Kirschner
- Institute of Cancer Sciences and
- CRUK Beatson Institute for Cancer Research, University of Glasgow, Glasgow, United Kingdom
| | - Simon R Tomlinson
- Centre for Regenerative Medicine, Institute for Regeneration and Repair, University of Edinburgh, Edinburgh, United Kingdom
| | - Katrin Ottersbach
- Centre for Regenerative Medicine, Institute for Regeneration and Repair, University of Edinburgh, Edinburgh, United Kingdom
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15
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Specification of hematopoietic stem cells in mammalian embryos: a rare or frequent event? Blood 2022; 140:309-320. [PMID: 35737920 PMCID: PMC9335503 DOI: 10.1182/blood.2020009839] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2021] [Accepted: 12/02/2021] [Indexed: 11/20/2022] Open
Abstract
Hematopoietic stem cells (HSCs) are the blood-forming stem cells thought to be responsible for supporting the blood system throughout life. Transplantability has long been the flagship assay used to define and characterize HSCs throughout ontogeny. However, it has recently become clear that many cells emerge during ontogeny that lack transplantability yet nevertheless are fated to ultimately contribute to the adult HSC pool. Here, we explore recent advances in understanding the numbers and kinetics of cells that emerge during development to support lifelong hematopoiesis; these advances are made possible by new technologies allowing interrogation of lifelong blood potential without embryo perturbation or transplantation. Illuminating the dynamics of these cells during normal development informs efforts to better understand the origins of hematologic disease and engineer HSCs from differentiating pluripotent stem cells.
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16
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Vargas-Valderrama A, Ponsen AC, Le Gall M, Clay D, Jacques S, Manoliu T, Rouffiac V, Ser-le-Roux K, Quivoron C, Louache F, Uzan G, Mitjavila-Garcia MT, Oberlin E, Guenou H. Endothelial and hematopoietic hPSCs differentiation via a hematoendothelial progenitor. Stem Cell Res Ther 2022; 13:254. [PMID: 35715824 PMCID: PMC9205076 DOI: 10.1186/s13287-022-02925-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2022] [Accepted: 05/29/2022] [Indexed: 11/10/2022] Open
Abstract
Background hPSC-derived endothelial and hematopoietic cells (ECs and HCs) are an interesting source of cells for tissue engineering. Despite their close spatial and temporal embryonic development, current hPSC differentiation protocols are specialized in only one of these lineages. In this study, we generated a hematoendothelial population that could be further differentiated in vitro to both lineages.
Methods Two hESCs and one hiPSC lines were differentiated into a hematoendothelial population, hPSC-ECs and blast colonies (hPSC-BCs) via CD144+-embryoid bodies (hPSC-EBs). hPSC-ECs were characterized by endothelial colony-forming assay, LDL uptake assay, endothelial activation by TNF-α, nitric oxide detection and Matrigel-based tube formation. Hematopoietic colony-forming cell assay was performed from hPSC-BCs. Interestingly, we identified a hPSC-BC population characterized by the expression of both CD144 and CD45. hPSC-ECs and hPSC-BCs were analyzed by flow cytometry and RT-qPCR; in vivo experiments have been realized by ischemic tissue injury model on a mouse dorsal skinfold chamber and hematopoietic reconstitution in irradiated immunosuppressed mouse from hPSC-ECs and hPSC-EB-CD144+, respectively. Transcriptomic analyses were performed to confirm the endothelial and hematopoietic identity of hESC-derived cell populations by comparing them against undifferentiated hESC, among each other’s (e.g. hPSC-ECs vs. hPSC-EB-CD144+) and against human embryonic liver (EL) endothelial, hematoendothelial and hematopoietic cell subpopulations.
Results A hematoendothelial population was obtained after 84 h of hPSC-EBs formation under serum-free conditions and isolated based on CD144 expression. Intrafemorally injection of hPSC-EB-CD144+ contributed to the generation of CD45+ human cells in immunodeficient mice suggesting the existence of hemogenic ECs within hPSC-EB-CD144+. Endothelial differentiation of hPSC-EB-CD144+ yields a population of > 95% functional ECs in vitro. hPSC-ECs derived through this protocol participated at the formation of new vessels in vivo in a mouse ischemia model. In vitro, hematopoietic differentiation of hPSC-EB-CD144+ generated an intermediate population of > 90% CD43+ hPSC-BCs capable to generate myeloid and erythroid colonies. Finally, the transcriptomic analyses confirmed the hematoendothelial, endothelial and hematopoietic identity of hPSC-EB-CD144+, hPSC-ECs and hPSC-BCs, respectively, and the similarities between hPSC-BC-CD144+CD45+, a subpopulation of hPSC-BCs, and human EL hematopoietic stem cells/hematopoietic progenitors.
Conclusion The present work reports a hPSC differentiation protocol into functional hematopoietic and endothelial cells through a hematoendothelial population. Both lineages were proven to display characteristics of physiological human cells, and therefore, they represent an interesting rapid source of cells for future cell therapy and tissue engineering. Supplementary Information The online version contains supplementary material available at 10.1186/s13287-022-02925-w.
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Affiliation(s)
| | - Anne-Charlotte Ponsen
- INSERM UMRS-MD 1197, Hôpital Paul Brousse, Université Paris-Saclay, 94807, Villejuif, France
| | - Morgane Le Gall
- Plateforme Protéomique 3P5-Proteom'IC, Institut Cochin, INSERM U1016, CNRS UMR8104, Université de Paris, 75014, Paris, France
| | - Denis Clay
- INSERM UMS-44, Hôpital Paul Brousse, Université Paris Sud-Université Paris-Saclay, 94807, Villejuif, France
| | - Sébastien Jacques
- Plateforme de Génomique- GENOM'IC, Institut Cochin, INSERM U1016, CNRS UMR8104, Université de Paris, 75014, Paris, France
| | - Tudor Manoliu
- Plate-forme Imagerie et Cytométrie, UMS AMMICa, Gustave Roussy, Université Paris-Saclay, 94805, Villejuif, France
| | - Valérie Rouffiac
- Plate-forme Imagerie et Cytométrie, UMS AMMICa, Gustave Roussy, Université Paris-Saclay, 94805, Villejuif, France
| | - Karine Ser-le-Roux
- INSERM, UMS AMMICa, Plate-forme d'Evaluation Préclinique, Gustave Roussy, 94807, Villejuif, France
| | - Cyril Quivoron
- Laboratoire d'Hématologie Translationnelle, Gustave Roussy, 94805, Villejuif, France
| | - Fawzia Louache
- INSERM UMRS-MD 1197, Hôpital Paul Brousse, Université Paris-Saclay, 94807, Villejuif, France
| | - Georges Uzan
- INSERM UMRS-MD 1197, Hôpital Paul Brousse, Université Paris-Saclay, 94807, Villejuif, France
| | | | - Estelle Oberlin
- INSERM UMRS-MD 1197, Hôpital Paul Brousse, Université Paris-Saclay, 94807, Villejuif, France
| | - Hind Guenou
- INSERM UMRS-MD 1197, Hôpital Paul Brousse, Université Paris-Saclay, 94807, Villejuif, France. .,Université d'Evry-Val-d'Essonne, Université Paris-Saclay, 91000, Evry, France.
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17
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Klaus A, Clapes T, Yvernogeau L, Basu S, Weijts B, Maas J, Smal I, Galjart N, Robin C. CLASP2 safeguards hematopoietic stem cell properties during mouse and fish development. Cell Rep 2022; 39:110957. [PMID: 35705037 DOI: 10.1016/j.celrep.2022.110957] [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: 08/12/2021] [Revised: 01/28/2022] [Accepted: 05/23/2022] [Indexed: 11/27/2022] Open
Abstract
Hematopoietic stem cells (HSCs) express a large variety of cell surface receptors that are associated with acquisition of self-renewal and multipotent properties. Correct expression of these receptors depends on a delicate balance between cell surface trafficking, recycling, and degradation and is controlled by the microtubule network and Golgi apparatus, whose roles have hardly been explored during embryonic/fetal hematopoiesis. Here we show that, in the absence of CLASP2, a microtubule-associated protein, the overall production of HSCs is reduced, and the produced HSCs fail to self-renew and maintain their stemness throughout mouse and zebrafish development. This phenotype can be attributed to decreased cell surface expression of the hematopoietic receptor c-Kit, which originates from increased lysosomal degradation in combination with a reduction in trafficking to the plasma membrane. A dysfunctional Golgi apparatus in CLASP2-deficient HSCs seems to be the underlying cause of the c-Kit expression and signaling imbalance.
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Affiliation(s)
- Anna Klaus
- Hubrecht Institute-KNAW & University Medical Center Utrecht, Uppsalalaan 8, 3584 CT Utrecht, the Netherlands
| | - Thomas Clapes
- Hubrecht Institute-KNAW & University Medical Center Utrecht, Uppsalalaan 8, 3584 CT Utrecht, the Netherlands
| | - Laurent Yvernogeau
- Hubrecht Institute-KNAW & University Medical Center Utrecht, Uppsalalaan 8, 3584 CT Utrecht, the Netherlands
| | - Sreya Basu
- Department of Cell Biology, Erasmus University Medical Center, P.O. Box 2040, 3000 CA Rotterdam, the Netherlands
| | - Bart Weijts
- Hubrecht Institute-KNAW & University Medical Center Utrecht, Uppsalalaan 8, 3584 CT Utrecht, the Netherlands
| | - Joris Maas
- Hubrecht Institute-KNAW & University Medical Center Utrecht, Uppsalalaan 8, 3584 CT Utrecht, the Netherlands
| | - Ihor Smal
- Theme Biomedical Sciences and Departments of Cell Biology and Molecular Genetics, Erasmus Medical Center, P.O. Box 2040, 3000 CA Rotterdam, the Netherlands
| | - Niels Galjart
- Department of Cell Biology, Erasmus University Medical Center, P.O. Box 2040, 3000 CA Rotterdam, the Netherlands
| | - Catherine Robin
- Hubrecht Institute-KNAW & University Medical Center Utrecht, Uppsalalaan 8, 3584 CT Utrecht, the Netherlands; Regenerative Medicine Center, University Medical Center Utrecht, 3584 EA Utrecht, the Netherlands.
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18
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Embryonic Origins of the Hematopoietic System: Hierarchies and Heterogeneity. Hemasphere 2022; 6:e737. [PMID: 35647488 PMCID: PMC9132533 DOI: 10.1097/hs9.0000000000000737] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Accepted: 04/28/2022] [Indexed: 11/26/2022] Open
Abstract
The hierarchical framework of the adult blood system as we know it from current medical and hematology textbooks, displays a linear branching network of dividing and differentiated cells essential for the growth and maintenance of the healthy organism. This view of the hierarchy has evolved over the last 75 years. An amazing increase in cellular complexity has been realized; however, innovative single-cell technologies continue to uncover essential cell types and functions in animal models and the human blood system. The most potent cell of the hematopoietic hierarchy is the hematopoietic stem cell. Stem cells for adult tissues are the long-lived self-renewing cellular component, which ensure that differentiated tissue-specific cells are maintained and replaced through the entire adult lifespan. Although much blood research is focused on hematopoietic tissue homeostasis, replacement and regeneration during adult life, embryological studies have widened and enriched our understanding of additional developmental hierarchies and interacting cells of this life-sustaining tissue. Here, we review the current state of knowledge of the hierarchical organization and the vast heterogeneity of the hematopoietic system from embryonic to adult stages.
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19
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Watt SM, Hua P, Roberts I. Increasing Complexity of Molecular Landscapes in Human Hematopoietic Stem and Progenitor Cells during Development and Aging. Int J Mol Sci 2022; 23:ijms23073675. [PMID: 35409034 PMCID: PMC8999121 DOI: 10.3390/ijms23073675] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2022] [Revised: 03/21/2022] [Accepted: 03/23/2022] [Indexed: 02/05/2023] Open
Abstract
The past five decades have seen significant progress in our understanding of human hematopoiesis. This has in part been due to the unprecedented development of advanced technologies, which have allowed the identification and characterization of rare subsets of human hematopoietic stem and progenitor cells and their lineage trajectories from embryonic through to adult life. Additionally, surrogate in vitro and in vivo models, although not fully recapitulating human hematopoiesis, have spurred on these scientific advances. These approaches have heightened our knowledge of hematological disorders and diseases and have led to their improved diagnosis and therapies. Here, we review human hematopoiesis at each end of the age spectrum, during embryonic and fetal development and on aging, providing exemplars of recent progress in deciphering the increasingly complex cellular and molecular hematopoietic landscapes in health and disease. This review concludes by highlighting links between chronic inflammation and metabolic and epigenetic changes associated with aging and in the development of clonal hematopoiesis.
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Affiliation(s)
- Suzanne M. Watt
- Stem Cell Research, Nuffield Division of Clinical Laboratory Sciences, Radcliffe Department of Medicine, University of Oxford, Oxford OX3 9BQ, UK
- Myeloma Research Laboratory, Adelaide Medical School, Faculty of Health and Medical Sciences, University of Adelaide, North Terrace, Adelaide 5005, Australia
- Cancer Program, Precision Medicine Theme, South Australian Health and Medical Research Institute, Adelaide 5001, Australia
- Correspondence: or ; Tel.: +61-403-393-755
| | - Peng Hua
- State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing 210029, China;
| | - Irene Roberts
- MRC Molecular Haematology Unit, MRC Weatherall Institute of Molecular Medicine, and NIHR Oxford Biomedical Research Centre Haematology Theme, Radcliffe Department of Medicine, University of Oxford, Oxford OX3 9DU, UK;
- Department of Paediatrics and NIHR Oxford Biomedical Research Centre Haematology Theme, University of Oxford, Oxford OX3 9DU, UK
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20
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Hadland B, Varnum-Finney B, Dozono S, Dignum T, Nourigat-McKay C, Heck AM, Ishida T, Jackson DL, Itkin T, Butler JM, Rafii S, Trapnell C, Bernstein ID. Engineering a niche supporting hematopoietic stem cell development using integrated single-cell transcriptomics. Nat Commun 2022; 13:1584. [PMID: 35332125 PMCID: PMC8948249 DOI: 10.1038/s41467-022-28781-z] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2020] [Accepted: 02/09/2022] [Indexed: 12/22/2022] Open
Abstract
Hematopoietic stem cells (HSCs) develop from hemogenic endothelium within embryonic arterial vessels such as the aorta of the aorta-gonad-mesonephros region (AGM). To identify the signals responsible for HSC formation, here we use single cell RNA-sequencing to simultaneously analyze the transcriptional profiles of AGM-derived cells transitioning from hemogenic endothelium to HSCs, and AGM-derived endothelial cells which provide signals sufficient to support HSC maturation and self-renewal. Pseudotemporal ordering reveals dynamics of gene expression during the hemogenic endothelium to HSC transition, identifying surface receptors specifically expressed on developing HSCs. Transcriptional profiling of niche endothelial cells identifies corresponding ligands, including those signaling to Notch receptors, VLA-4 integrin, and CXCR4, which, when integrated in an engineered platform, are sufficient to support the generation of engrafting HSCs. These studies provide a transcriptional map of the signaling interactions necessary for the development of HSCs and advance the goal of engineering HSCs for therapeutic applications.
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Affiliation(s)
- Brandon Hadland
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA, 98109, USA.
- Department of Pediatrics, University of Washington School of Medicine, Seattle, WA, 98105, USA.
| | - Barbara Varnum-Finney
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA, 98109, USA
| | - Stacey Dozono
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA, 98109, USA
| | - Tessa Dignum
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA, 98109, USA
| | - Cynthia Nourigat-McKay
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA, 98109, USA
| | - Adam M Heck
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA, 98109, USA
| | - Takashi Ishida
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA, 98109, USA
| | - Dana L Jackson
- Department of Genome Sciences, University of Washington School of Medicine, Seattle, WA, 98105, USA
| | - Tomer Itkin
- Department of Genetic Medicine, Ansary Stem Cell Institute, Howard Hughes Medical Institute, Weill Cornell Medical College, New York, NY, 10021, USA
| | - Jason M Butler
- Center for Discovery and Innovation, Hackensack University Medical Center, Nutley, NJ, 07110, USA
| | - Shahin Rafii
- Department of Genetic Medicine, Ansary Stem Cell Institute, Howard Hughes Medical Institute, Weill Cornell Medical College, New York, NY, 10021, USA
| | - Cole Trapnell
- Department of Genome Sciences, University of Washington School of Medicine, Seattle, WA, 98105, USA
| | - Irwin D Bernstein
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA, 98109, USA
- Department of Pediatrics, University of Washington School of Medicine, Seattle, WA, 98105, USA
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21
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One Size Does Not Fit All: Heterogeneity in Developmental Hematopoiesis. Cells 2022; 11:cells11061061. [PMID: 35326511 PMCID: PMC8947200 DOI: 10.3390/cells11061061] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Revised: 03/17/2022] [Accepted: 03/18/2022] [Indexed: 02/06/2023] Open
Abstract
Our knowledge of the complexity of the developing hematopoietic system has dramatically expanded over the course of the last few decades. We now know that, while hematopoietic stem cells (HSCs) firmly reside at the top of the adult hematopoietic hierarchy, multiple HSC-independent progenitor populations play variegated and fundamental roles during fetal life, which reflect on adult physiology and can lead to disease if subject to perturbations. The importance of obtaining a high-resolution picture of the mechanisms by which the developing embryo establishes a functional hematopoietic system is demonstrated by many recent indications showing that ontogeny is a primary determinant of function of multiple critical cell types. This review will specifically focus on exploring the diversity of hematopoietic stem and progenitor cells unique to embryonic and fetal life. We will initially examine the evidence demonstrating heterogeneity within the hemogenic endothelium, precursor to all definitive hematopoietic cells. Next, we will summarize the dynamics and characteristics of the so-called "hematopoietic waves" taking place during vertebrate development. For each of these waves, we will define the cellular identities of their components, the extent and relevance of their respective contributions as well as potential drivers of heterogeneity.
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22
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OUP accepted manuscript. Stem Cells 2022; 40:332-345. [DOI: 10.1093/stmcls/sxac001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Accepted: 12/17/2021] [Indexed: 11/12/2022]
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23
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Zbinden A, Canté-Barrett K, Pike-Overzet K, Staal FJT. Stem Cell-Based Disease Models for Inborn Errors of Immunity. Cells 2021; 11:cells11010108. [PMID: 35011669 PMCID: PMC8750661 DOI: 10.3390/cells11010108] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Revised: 12/23/2021] [Accepted: 12/29/2021] [Indexed: 11/24/2022] Open
Abstract
The intrinsic capacity of human hematopoietic stem cells (hHSCs) to reconstitute myeloid and lymphoid lineages combined with their self-renewal capacity hold enormous promises for gene therapy as a viable treatment option for a number of immune-mediated diseases, most prominently for inborn errors of immunity (IEI). The current development of such therapies relies on disease models, both in vitro and in vivo, which allow the study of human pathophysiology in great detail. Here, we discuss the current challenges with regards to developmental origin, heterogeneity and the subsequent implications for disease modeling. We review models based on induced pluripotent stem cell technology and those relaying on use of adult hHSCs. We critically review the advantages and limitations of current models for IEI both in vitro and in vivo. We conclude that existing and future stem cell-based models are necessary tools for developing next generation therapies for IEI.
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24
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Azzoni E, Frontera V, Anselmi G, Rode C, James C, Deltcheva EM, Demian AS, Brown J, Barone C, Patelli A, Harman JR, Nicholls M, Conway SJ, Morrissey E, Jacobsen SEW, Sparrow DB, Harris AL, Enver T, de Bruijn MFTR. The onset of circulation triggers a metabolic switch required for endothelial to hematopoietic transition. Cell Rep 2021; 37:110103. [PMID: 34910918 PMCID: PMC8692754 DOI: 10.1016/j.celrep.2021.110103] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2020] [Revised: 10/11/2021] [Accepted: 11/15/2021] [Indexed: 12/14/2022] Open
Abstract
Hematopoietic stem cells (HSCs) emerge during development from the vascular wall of the main embryonic arteries. The onset of circulation triggers several processes that provide critical external factors for HSC generation. Nevertheless, it is not fully understood how and when the onset of circulation affects HSC emergence. Here we show that in Ncx1-/- mouse embryos devoid of circulation the HSC lineage develops until the phenotypic pro-HSC stage. However, these cells reside in an abnormal microenvironment, fail to activate the hematopoietic program downstream of Runx1, and are functionally impaired. Single-cell transcriptomics shows that during the endothelial-to-hematopoietic transition, Ncx1-/- cells fail to undergo a glycolysis to oxidative phosphorylation metabolic switch present in wild-type cells. Interestingly, experimental activation of glycolysis results in decreased intraembryonic hematopoiesis. Our results suggest that the onset of circulation triggers metabolic changes that allow HSC generation to proceed.
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Affiliation(s)
- Emanuele Azzoni
- MRC Molecular Hematology Unit, MRC Weatherall Institute of Molecular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, OX3 9DS, UK.
| | - Vincent Frontera
- MRC Molecular Hematology Unit, MRC Weatherall Institute of Molecular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, OX3 9DS, UK
| | - Giorgio Anselmi
- MRC Molecular Hematology Unit, MRC Weatherall Institute of Molecular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, OX3 9DS, UK
| | - Christina Rode
- MRC Molecular Hematology Unit, MRC Weatherall Institute of Molecular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, OX3 9DS, UK
| | - Chela James
- Department of Cancer Biology, UCL Cancer Institute, University College London, London, WC1E 6DD, UK
| | - Elitza M Deltcheva
- Department of Cancer Biology, UCL Cancer Institute, University College London, London, WC1E 6DD, UK
| | - Atanasiu S Demian
- MRC WIMM Centre for Computational Biology, MRC Weatherall Institute of Molecular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, OX3 9DS, UK
| | - John Brown
- Department of Cancer Biology, UCL Cancer Institute, University College London, London, WC1E 6DD, UK
| | - Cristiana Barone
- School of Medicine and Surgery, University of Milano-Bicocca, Monza, 20900, Italy
| | - Arianna Patelli
- School of Medicine and Surgery, University of Milano-Bicocca, Monza, 20900, Italy
| | - Joe R Harman
- MRC Molecular Hematology Unit, MRC Weatherall Institute of Molecular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, OX3 9DS, UK
| | - Matthew Nicholls
- MRC Molecular Hematology Unit, MRC Weatherall Institute of Molecular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, OX3 9DS, UK
| | - Simon J Conway
- HB Wells Center for Pediatric Research, Indiana University School of Medicine, Indianapolis, Indiana, IN 46033, USA
| | - Edward Morrissey
- MRC WIMM Centre for Computational Biology, MRC Weatherall Institute of Molecular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, OX3 9DS, UK
| | - Sten Eirik W Jacobsen
- MRC Molecular Hematology Unit, MRC Weatherall Institute of Molecular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, OX3 9DS, UK; Hematopoietic Stem Cell Laboratory, MRC Weatherall Institute of Molecular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, OX3 9DS, UK; Department of Cell and Molecular Biology, Wallenberg Institute for Regenerative Medicine and Department of Medicine, Center for Hematology and Regenerative Medicine, Karolinska Institutet and Karolinska University Hospital, 171 77 Stockholm, Sweden
| | - Duncan B Sparrow
- Department of Physiology, Anatomy and Genetics, BHF Centre of Research Excellence, University of Oxford, Oxford, OX1 3PT, UK
| | - Adrian L Harris
- Department of Oncology, Molecular Oncology Laboratories, MRC Weatherall Institute of Molecular Medicine, University of Oxford, John Radcliffe Hospital, Oxford, OX3 9DS, UK
| | - Tariq Enver
- Department of Cancer Biology, UCL Cancer Institute, University College London, London, WC1E 6DD, UK; Division of Molecular Medicine and Gene Therapy, Lund University, Lund, 22184, Sweden
| | - Marella F T R de Bruijn
- MRC Molecular Hematology Unit, MRC Weatherall Institute of Molecular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, OX3 9DS, UK.
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25
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Weijts B, Yvernogeau L, Robin C. Recent Advances in Developmental Hematopoiesis: Diving Deeper With New Technologies. Front Immunol 2021; 12:790379. [PMID: 34899758 PMCID: PMC8652083 DOI: 10.3389/fimmu.2021.790379] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2021] [Accepted: 10/28/2021] [Indexed: 12/15/2022] Open
Abstract
The journey of a hematopoietic stem cell (HSC) involves the passage through successive anatomical sites where HSCs are in direct contact with their surrounding microenvironment, also known as niche. These spatial and temporal cellular interactions throughout development are required for the acquisition of stem cell properties, and for maintaining the HSC pool through balancing self-renewal, quiescence and lineage commitment. Understanding the context and consequences of these interactions will be imperative for our understanding of HSC biology and will lead to the improvement of in vitro production of HSCs for clinical purposes. The aorta-gonad-mesonephros (AGM) region is in this light of particular interest since this is the cradle of HSC emergence during the embryonic development of all vertebrate species. In this review, we will focus on the developmental origin of HSCs and will discuss the novel technological approaches and recent progress made to identify the cellular composition of the HSC supportive niche and the underlying molecular events occurring in the AGM region.
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Affiliation(s)
- Bart Weijts
- Hubrecht Institute-KNAW (Royal Netherlands Academy of Arts and Sciences) & University Medical Center Utrecht, Utrecht, Netherlands
| | - Laurent Yvernogeau
- Hubrecht Institute-KNAW (Royal Netherlands Academy of Arts and Sciences) & University Medical Center Utrecht, Utrecht, Netherlands
| | - Catherine Robin
- Hubrecht Institute-KNAW (Royal Netherlands Academy of Arts and Sciences) & University Medical Center Utrecht, Utrecht, Netherlands
- Regenerative Medicine Center, University Medical Center Utrecht, Utrecht, Netherlands
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26
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Savage AM, Alberio R, Johnson AD. Germline competent mesoderm: the substrate for vertebrate germline and somatic stem cells? Biol Open 2021; 10:272478. [PMID: 34648017 PMCID: PMC8524722 DOI: 10.1242/bio.058890] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
In vitro production of tissue-specific stem cells [e.g. haematopoietic stem cells (HSCs)] is a key goal of regenerative medicine. However, recent efforts to produce fully functional tissue-specific stem cells have fallen short. One possible cause of shortcomings may be that model organisms used to characterize basic vertebrate embryology (Xenopus, zebrafish, chick) may employ molecular mechanisms for stem cell specification that are not conserved in humans, a prominent example being the specification of primordial germ cells (PGCs). Germ plasm irreversibly specifies PGCs in many models; however, it is not conserved in humans, which produce PGCs from tissue termed germline-competent mesoderm (GLCM). GLCM is not conserved in organisms containing germ plasm, or even in mice, but understanding its developmental potential could unlock successful production of other stem cell types. GLCM was first discovered in embryos from the axolotl and its conservation has since been demonstrated in pigs, which develop from a flat-disc embryo like humans. Together these findings suggest that GLCM is a conserved basal trait of vertebrate embryos. Moreover, the immortal nature of germ cells suggests that immortality is retained during GLCM specification; here we suggest that the demonstrated pluripotency of GLCM accounts for retention of immortality in somatic stem cell types as well. This article has an associated Future Leaders to Watch interview with the author of the paper. Summary: Recent findings that germline and stem cell specification may differ between species may have important implications for regenerative medicine and the future of stem cell biology.
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Affiliation(s)
- Aaron M Savage
- School of Pharmacy, Division of Stem Cell and Regenerative Medicine, University of Nottingham, University Park, Nottingham, NG7 2RD, UK
| | - Ramiro Alberio
- School of Biosciences, Stem Cell Biology, Reprogramming and Pluripotency, University of Nottingham, Sutton Bonington Campus, Loughborough, LE12 5RD, UK
| | - Andrew D Johnson
- School of Life Sciences, Division of Cells, Organisms and Molecular Genetics, University of Nottingham, Medical School, Queen's Medical Centre, Nottingham, NG7 2UH, UK
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27
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He W, Zhang Y, Cao Z, Ye Z, Lu X, Fan J, Peng W, Li Z. Wild-Type p53-Induced Phosphatase 1 Plays a Positive Role in Hematopoiesis in the Mouse Embryonic Head. Front Cell Dev Biol 2021; 9:732527. [PMID: 34604235 PMCID: PMC8484912 DOI: 10.3389/fcell.2021.732527] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Accepted: 08/18/2021] [Indexed: 12/02/2022] Open
Abstract
The first adult repopulating hematopoietic stem cells (HSCs) are found in the aorta-gonad-mesonephros (AGM) region, which are produced from hemogenic endothelial cells. Embryonic head is the other site for HSC development. Wild-type p53-induced phosphatase 1 (Wip1) is a type-2Cδ family serine/threonine phosphatase involved in various cellular processes such as lymphoid development and differentiation of adult HSCs. Most recently, we have shown that Wip1 modulates the pre-HSC maturation in the AGM region. However, it is not clear whether Wip1 regulates hematopoiesis in the embryonic head. Here we reported that disruption of Wip1 resulted in a decrease of hematopoietic progenitor cell number in the embryonic head. In vivo transplantation assays showed a reduction of HSC function after Wip1 ablation. We established that Wip1 deletion reduced the frequency and cell number of microglia in the embryonic head. Further observations revealed that Wip1 absence enhanced the gene expression of microglia-derived pro-inflammatory factors. Thus, it is likely that Wip1 functions as a positive regulator in HSC development by regulating the function of microglia in the embryonic head.
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Affiliation(s)
- Wenyan He
- China National Clinical Research Center for Neurological Diseases, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Ying Zhang
- Department of Developmental Biology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
| | - Zhan Cao
- Department of Developmental Biology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
| | - Zehua Ye
- Department of Developmental Biology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
| | - Xun Lu
- Department of Developmental Biology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
| | - Junwan Fan
- China National Clinical Research Center for Neurological Diseases, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Wei Peng
- Department of Stomatology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Zhuan Li
- Department of Developmental Biology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
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28
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Hapln1b, a central organizer of the extracellular matrix, modulates kit signalling to control developmental haematopoiesis. Blood Adv 2021; 5:4935-4948. [PMID: 34543380 PMCID: PMC9152995 DOI: 10.1182/bloodadvances.2020001524] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2020] [Accepted: 06/30/2021] [Indexed: 11/20/2022] Open
Abstract
During early vertebrate development, hematopoietic stem and progenitor cells (HSPCs) are produced from hemogenic endothelium located in the dorsal aorta, before they migrate to a transient niche where they expand, the fetal liver and the caudal hematopoietic tissue (CHT), in mammals and zebrafish, respectively. In zebrafish, previous studies have shown that the extracellular matrix (ECM) around the aorta needs to be degraded to allow HSPCs to leave the aortic floor and reach blood circulation. However, the role of the ECM components in HSPC specification has never been addressed. We show here that hapln1b, a key component of the ECM is specifically expressed in hematopoietic sites in the zebrafish embryo. Gain- and loss-of-function experiments all resulted in the absence of HSPCs in the early embryo, showing that hapln1b is required, at the correct level, to specify HSPCs in the hemogenic endothelium. Furthermore, we show that the expression of hapln1b is necessary to maintain the integrity of the ECM through its link domain. By combining functional analyses and computer modelling, we show that kitlgb interacts with the ECM to specify HSPCs. We demonstrate that the ECM is an integral component of the microenvironment and mediates cytokine signalling that is required for HSPC specification.
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29
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Karimzadeh A, Varady ES, Scarfone VM, Chao C, Grathwohl K, Nguyen PU, Ghorbanian Y, Weissman IL, Serwold T, Inlay MA. Absence of CD11a Expression Identifies Embryonic Hematopoietic Stem Cell Precursors via Competitive Neonatal Transplantation Assay. Front Cell Dev Biol 2021; 9:734176. [PMID: 34513848 PMCID: PMC8425522 DOI: 10.3389/fcell.2021.734176] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Accepted: 08/02/2021] [Indexed: 11/13/2022] Open
Abstract
Hematopoietic stem cells (HSCs) are defined by their self-renewal, multipotency, and bone marrow (BM) engraftment abilities. How HSCs emerge during embryonic development remains unclear, but are thought to arise from hemogenic endothelium through an intermediate precursor called "pre-HSCs." Pre-HSCs have self-renewal and multipotent activity, but lack BM engraftability. They can be identified functionally by transplantation into neonatal recipients, or by in vitro co-culture with cytokines and stroma followed by transplantation into adult recipients. While pre-HSCs express markers such as Kit and CD144, a precise surface marker identity for pre-HSCs has remained elusive due to the fluctuating expression of common HSC markers during embryonic development. We have previously determined that the lack of CD11a expression distinguishes HSCs in adults as well as multipotent progenitors in the embryo. Here, we use a neonatal transplantation assay to identify pre-HSC populations in the mouse embryo. We establish CD11a as a critical marker for the identification and enrichment of pre-HSCs in day 10.5 and 11.5 mouse embryos. Our proposed pre-HSC population, termed "11a- eKLS" (CD11a- Ter119- CD43+ Kit+ Sca1+ CD144+), contains all in vivo long-term engrafting embryonic progenitors. This population also displays a cell-cycle status expected of embryonic HSC precursors. Furthermore, we identify the neonatal liver as the likely source of signals that can mature pre-HSCs into BM-engraftable HSCs.
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Affiliation(s)
- Alborz Karimzadeh
- Sue and Bill Gross Stem Cell Research Center, University of California, Irvine, Irvine, CA, United States.,Department of Molecular Biology and Biochemistry, University of California, Irvine, Irvine, CA, United States
| | - Erika S Varady
- Sue and Bill Gross Stem Cell Research Center, University of California, Irvine, Irvine, CA, United States.,Department of Molecular Biology and Biochemistry, University of California, Irvine, Irvine, CA, United States
| | - Vanessa M Scarfone
- Sue and Bill Gross Stem Cell Research Center, University of California, Irvine, Irvine, CA, United States
| | - Connie Chao
- Sue and Bill Gross Stem Cell Research Center, University of California, Irvine, Irvine, CA, United States.,Department of Molecular Biology and Biochemistry, University of California, Irvine, Irvine, CA, United States
| | - Karin Grathwohl
- Sue and Bill Gross Stem Cell Research Center, University of California, Irvine, Irvine, CA, United States.,Department of Molecular Biology and Biochemistry, University of California, Irvine, Irvine, CA, United States
| | - Pauline U Nguyen
- Sue and Bill Gross Stem Cell Research Center, University of California, Irvine, Irvine, CA, United States.,Department of Molecular Biology and Biochemistry, University of California, Irvine, Irvine, CA, United States
| | - Yasamine Ghorbanian
- Sue and Bill Gross Stem Cell Research Center, University of California, Irvine, Irvine, CA, United States.,Department of Molecular Biology and Biochemistry, University of California, Irvine, Irvine, CA, United States
| | - Irving L Weissman
- Institute of Stem Cell Biology and Regenerative Medicine and Ludwig Center, Stanford University, Stanford, CA, United States
| | - Thomas Serwold
- Joslin Diabetes Center, Harvard Medical School, Boston, MA, United States
| | - Matthew A Inlay
- Sue and Bill Gross Stem Cell Research Center, University of California, Irvine, Irvine, CA, United States.,Department of Molecular Biology and Biochemistry, University of California, Irvine, Irvine, CA, United States
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30
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Murine AGM single-cell profiling identifies a continuum of hemogenic endothelium differentiation marked by ACE. Blood 2021; 139:343-356. [PMID: 34517413 DOI: 10.1182/blood.2020007885] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Accepted: 08/19/2021] [Indexed: 11/20/2022] Open
Abstract
In vitro generation and expansion of hematopoietic stem cells (HSCs) holds great promise for the treatment of any ailment that relies on bone marrow or blood transplantation. To achieve this, it is essential to resolve the molecular and cellular pathways that govern HSC formation in the embryo. HSCs first emerge in the aorta-gonad-mesonephros region (AGM) where a rare subset of endothelial cells, hemogenic endothelium (HE), undergoes an endothelial-to-hematopoietic transition (EHT). Here, we present full-length single-cell-RNA-sequencing of the EHT process with a focus on HE and dorsal aorta niche cells. By using Runx1b and Gfi1/1b transgenic reporter mouse models to isolate HE, we uncovered that the pre-HE to HE continuum is specifically marked by Angiotensin-I converting enzyme (ACE) expression. We established that HE cells begin to enter the cell cycle near the time of EHT initiation when their morphology still resembles endothelial cells. We further demonstrated that RUNX1 AGM niche cells consist of vascular smooth muscle cells and PDGFRa+ mesenchymal cells and can functionally support hematopoiesis. Overall, our study provides new insights into HE differentiation towards HSC and the role of AGM RUNX1+ niche cells in this process. Our expansive scRNA-seq datasets represents a powerful resource to investigate these processes further.
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31
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Tsuruda M, Morino-Koga S, Ogawa M. Bone morphogenetic protein 4 differently promotes distinct VE-cadherin + precursor stages during the definitive hematopoietic development from embryonic stem cell-derived mesodermal cells. Exp Hematol 2021; 103:40-51.e7. [PMID: 34464660 DOI: 10.1016/j.exphem.2021.08.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Revised: 08/04/2021] [Accepted: 08/23/2021] [Indexed: 11/30/2022]
Abstract
Definitive hematopoietic cells develop from fetal liver kinase 1 (Flk1)+ mesodermal cells during the in vitro differentiation of mouse embryonic stem cells (ESCs). VE-cadherin+CD41-CD45-(V+41-45-) hemogenic endothelial cells (HECs) and VE-cadherin+CD41+CD45- (V+41+45-) cells mediate the definitive hematopoietic development from Flk1+ cells. Bone morphogenetic protein 4 (BMP4) is known to be essential for the formation of mesoderm. However, the role of BMP4 in differentiation of the VE-cadherin+ definitive hematopoietic precursors from the mesoderm has been elusive. We addressed this issue using a co-aggregation culture of ESC-derived Flk1+ cells with OP9 stromal cells. This culture method induced V+41-45- cells, V+41+45- cells, and CD45+ cells from Flk1+ cells. V+41+45- cells possessed potential for erythromyeloid and T-lymphoid differentiation. When Flk1+ cells were cultured in the presence of a high concentration of BMP4, the generation of V+41-45- cells was enhanced. The increase in V+41-45- cells led to the subsequent increase in V+41+45- and CD45+ cells. The addition of BMP4 also increased hematopoietic colony-forming cells of various lineages. Furthermore, BMP4 promoted the expansion of V+41+45- cells independently of the preceding V+41-45- cell stage. These results suggest that BMP4 has promotive effects on the differentiation of V+41-45- HECs from Flk1+ mesodermal cells and the subsequent proliferation of V+41+45- hematopoietic precursors. These findings may provide insights for establishing a culture system to induce definitive hematopoietic stem cells from ESCs.
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Affiliation(s)
- Mariko Tsuruda
- Department of Cell Differentiation, Institute of Molecular Embryology and Genetics, Kumamoto University, Chuo-ku, Kumamoto, Japan
| | - Saori Morino-Koga
- Department of Cell Differentiation, Institute of Molecular Embryology and Genetics, Kumamoto University, Chuo-ku, Kumamoto, Japan
| | - Minetaro Ogawa
- Department of Cell Differentiation, Institute of Molecular Embryology and Genetics, Kumamoto University, Chuo-ku, Kumamoto, Japan.
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32
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Mack R, Zhang L, Breslin Sj P, Zhang J. The Fetal-to-Adult Hematopoietic Stem Cell Transition and its Role in Childhood Hematopoietic Malignancies. Stem Cell Rev Rep 2021; 17:2059-2080. [PMID: 34424480 DOI: 10.1007/s12015-021-10230-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/28/2021] [Indexed: 01/07/2023]
Abstract
As with most organ systems that undergo continuous generation and maturation during the transition from fetal to adult life, the hematopoietic and immune systems also experience dynamic changes. Such changes lead to many unique features in blood cell function and immune responses in early childhood. The blood cells and immune cells in neonates are a mixture of fetal and adult origin due to the co-existence of both fetal and adult types of hematopoietic stem cells (HSCs) and progenitor cells (HPCs). Fetal blood and immune cells gradually diminish during maturation of the infant and are almost completely replaced by adult types of cells by 3 to 4 weeks after birth in mice. Such features in early childhood are associated with unique features of hematopoietic and immune diseases, such as leukemia, at these developmental stages. Therefore, understanding the cellular and molecular mechanisms by which hematopoietic and immune changes occur throughout ontogeny will provide useful information for the study and treatment of pediatric blood and immune diseases. In this review, we summarize the most recent studies on hematopoietic initiation during early embryonic development, the expansion of both fetal and adult types of HSCs and HPCs in the fetal liver and fetal bone marrow stages, and the shift from fetal to adult hematopoiesis/immunity during neonatal/infant development. We also discuss the contributions of fetal types of HSCs/HPCs to childhood leukemias.
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Affiliation(s)
- Ryan Mack
- Department of Cancer Biology, Oncology Institute, Cardinal Bernardin Cancer Center, Loyola University Medical Center, Maywood, IL, 60153, USA
| | - Lei Zhang
- Department of Cancer Biology, Oncology Institute, Cardinal Bernardin Cancer Center, Loyola University Medical Center, Maywood, IL, 60153, USA
| | - Peter Breslin Sj
- Department of Cancer Biology, Oncology Institute, Cardinal Bernardin Cancer Center, Loyola University Medical Center, Maywood, IL, 60153, USA.,Departments of Molecular/Cellular Physiology and Biology, Loyola University Medical Center and Loyola University Chicago, Chicago, IL, 60660, USA
| | - Jiwang Zhang
- Department of Cancer Biology, Oncology Institute, Cardinal Bernardin Cancer Center, Loyola University Medical Center, Maywood, IL, 60153, USA.
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33
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Fidanza A, Forrester LM. Progress in the production of haematopoietic stem and progenitor cells from human pluripotent stem cells. ACTA ACUST UNITED AC 2021; 13:100050. [PMID: 34405125 PMCID: PMC8350141 DOI: 10.1016/j.regen.2021.100050] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Revised: 06/14/2021] [Accepted: 06/21/2021] [Indexed: 12/16/2022]
Abstract
Cell therapies are currently used to treat many haematological diseases. These treatments range from the long-term reconstitution of the entire haematopoietic system using the most potent haematopoietic stem cells (HSCs) to the short-term rescue with mature functional end cells such as oxygen-carrying red blood cells and cells of the immune system that can fight infection and repair tissue. Limitations in supply and the risk of transmitting infection has prompted the design of protocols to produce some of these cell types from human pluripotent stem cells (hPSCs). Although it has proven challenging to generate the most potent HSCs directly from hPSCs, significant progress has been made in the development of differentiation protocols that can successfully produce haematopoietic progenitor cells and most of the mature cell lineages. We review the key steps used in the production of haematopoietic stem and progenitor cells (HSPCs) from hPSCs and the cell surface markers and reporter strategies that have been used to define specific transitions. Most studies have relied on the use of known markers that define HSPC production in vivo but more recently single cell RNA sequencing has allowed a less biased approach to their characterisation. Transcriptional profiling has identified new markers for naïve and committed hPSC-derived HSPC populations and trajectory analyses has provided novel insights into their lineage potential. Direct comparison of in vitro- and in vivo-derived RNA single cell sequencing datasets has highlights similarities and differences between the two systems and this deeper understanding will be key to the design and the tracking of improved and more efficient differentiation protocols.
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Affiliation(s)
- Antonella Fidanza
- Centre for Regenerative Medicine, Institute for Regeneration and Repair, University of Edinburgh, 5 Little France Drive, Edinburgh, EH16 4UU, UK
| | - Lesley M Forrester
- Centre for Regenerative Medicine, Institute for Regeneration and Repair, University of Edinburgh, 5 Little France Drive, Edinburgh, EH16 4UU, UK
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34
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Lyadova I, Gerasimova T, Nenasheva T. Macrophages Derived From Human Induced Pluripotent Stem Cells: The Diversity of Protocols, Future Prospects, and Outstanding Questions. Front Cell Dev Biol 2021; 9:640703. [PMID: 34150747 PMCID: PMC8207294 DOI: 10.3389/fcell.2021.640703] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2020] [Accepted: 03/25/2021] [Indexed: 12/23/2022] Open
Abstract
Macrophages (Mφ) derived from induced pluripotent stem cells (iMphs) represent a novel and promising model for studying human Mφ function and differentiation and developing new therapeutic strategies based on or oriented at Mφs. iMphs have several advantages over the traditionally used human Mφ models, such as immortalized cell lines and monocyte-derived Mφs. The advantages include the possibility of obtaining genetically identical and editable cells in a potentially scalable way. Various applications of iMphs are being developed, and their number is rapidly growing. However, the protocols of iMph differentiation that are currently used vary substantially, which may lead to differences in iMph differentiation trajectories and properties. Standardization of the protocols and identification of minimum required conditions that would allow obtaining iMphs in a large-scale, inexpensive, and clinically suitable mode are needed for future iMph applications. As a first step in this direction, the current review discusses the fundamental basis for the generation of human iMphs, performs a detailed analysis of the generalities and the differences between iMph differentiation protocols currently employed, and discusses the prospects of iMph applications.
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Affiliation(s)
- Irina Lyadova
- Laboratory of Cellular and Molecular Basis of Histogenesis, Koltzov Institute of Developmental Biology of the Russian Academy of Sciences, Moscow, Russia
| | - Tatiana Gerasimova
- Laboratory of Cellular and Molecular Basis of Histogenesis, Koltzov Institute of Developmental Biology of the Russian Academy of Sciences, Moscow, Russia
| | - Tatiana Nenasheva
- Laboratory of Cellular and Molecular Basis of Histogenesis, Koltzov Institute of Developmental Biology of the Russian Academy of Sciences, Moscow, Russia
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35
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Ding J, Cardoso AA, Yoshimoto M, Kobayashi M. The Earliest T-Precursors in the Mouse Embryo Are Susceptible to Leukemic Transformation. Front Cell Dev Biol 2021; 9:634151. [PMID: 33996794 PMCID: PMC8117020 DOI: 10.3389/fcell.2021.634151] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2020] [Accepted: 04/06/2021] [Indexed: 11/13/2022] Open
Abstract
Acute lymphoblastic leukemia (ALL) is the most common malignancy in pediatric patients. About 10–15% of pediatric ALL belong to T-cell ALL (T-ALL), which is characterized by aggressive expansion of immature T-lymphoblasts and is categorized as high-risk leukemia. Leukemia initiating cells represent a reservoir that is responsible for the initiation and propagation of leukemia. Its perinatal origin has been suggested in some childhood acute B-lymphoblastic and myeloblastic leukemias. Therefore, we hypothesized that child T-ALL initiating cells also exist during the perinatal period. In this study, T-ALL potential of the hematopoietic precursors was found in the para-aortic splanchnopleura (P-Sp) region, but not in the extraembryonic yolk sac (YS) of the mouse embryo at embryonic day 9.5. We overexpressed the Notch intracellular domain (NICD) in the P-Sp and YS cells and transplanted them into lethally irradiated mice. NICD-overexpressing P-Sp cells rapidly developed T-ALL while YS cells failed to display leukemia propagation despite successful NICD induction. These results suggest a possible role of fetal-derived T-cell precursors as leukemia-initiating cells.
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Affiliation(s)
- Jixin Ding
- Department of Medicine, Melvin and Bren Simon Cancer Center, Indiana University School of Medicine, Indianapolis, IN, United States
| | - Angelo A Cardoso
- Department of Medicine, Melvin and Bren Simon Cancer Center, Indiana University School of Medicine, Indianapolis, IN, United States.,Beckman Research Institute, City of Hope National Medical Center, Duarte, CA, United States
| | - Momoko Yoshimoto
- Department of Pediatrics Wells Center for Pediatric Research, Indiana University School of Medicine, Indianapolis, IN, United States.,Center for Stem Cell and Regenerative Medicine, Institute of Molecular Medicine, McGovern Medical School, University of Texas Health Science Center at Houston, Houston, TX, United States
| | - Michihiro Kobayashi
- Department of Pediatrics Wells Center for Pediatric Research, Indiana University School of Medicine, Indianapolis, IN, United States.,Center for Stem Cell and Regenerative Medicine, Institute of Molecular Medicine, McGovern Medical School, University of Texas Health Science Center at Houston, Houston, TX, United States
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36
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Jackson M, Fidanza A, Taylor AH, Rybtsov S, Axton R, Kydonaki M, Meek S, Burdon T, Medvinsky A, Forrester LM. Modulation of APLNR Signaling Is Required during the Development and Maintenance of the Hematopoietic System. Stem Cell Reports 2021; 16:727-740. [PMID: 33667414 PMCID: PMC8072025 DOI: 10.1016/j.stemcr.2021.02.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2020] [Revised: 02/04/2021] [Accepted: 02/05/2021] [Indexed: 12/17/2022] Open
Abstract
Apelin receptor (APLNR/AGTRLl1/APJ) marks a transient cell population during the differentiation of hematopoietic stem and progenitor cells (HSPCs) from pluripotent stem cells, but its function during the production and maintenance of hematopoietic stem cells is not clear. We generated an Aplnr-tdTomato reporter mouse embryonic stem cell (mESC) line and showed that HSPCs are generated exclusively from mesodermal cells that express Aplnr-tdTomato. HSPC production from mESCs was impaired when Aplnr was deleted, implying that this pathway is required for their production. To address the role of APLNR signaling in HSPC maintenance, we added APELIN ligands to ex vivo AGM cultures. Activation of the APLNR pathway in this system impaired the generation of long-term reconstituting HSPCs and appeared to drive myeloid differentiation. Our data suggest that the APLNR signaling is required for the generation of cells that give rise to HSCs, but that its subsequent downregulation is required for their maintenance.
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Affiliation(s)
- Melany Jackson
- MRC Centre for Regenerative Medicine, University of Edinburgh, 5 Little France Drive, Edinburgh EH16 4UU, UK
| | - Antonella Fidanza
- MRC Centre for Regenerative Medicine, University of Edinburgh, 5 Little France Drive, Edinburgh EH16 4UU, UK
| | - A Helen Taylor
- MRC Centre for Regenerative Medicine, University of Edinburgh, 5 Little France Drive, Edinburgh EH16 4UU, UK
| | - Stanislav Rybtsov
- MRC Centre for Regenerative Medicine, University of Edinburgh, 5 Little France Drive, Edinburgh EH16 4UU, UK; Institute for Stem Cell Research, Centre for Regenerative Medicine, 5 Little France Drive, Edinburgh EH16 4UU, UK
| | - Richard Axton
- MRC Centre for Regenerative Medicine, University of Edinburgh, 5 Little France Drive, Edinburgh EH16 4UU, UK
| | - Maria Kydonaki
- MRC Centre for Regenerative Medicine, University of Edinburgh, 5 Little France Drive, Edinburgh EH16 4UU, UK
| | - Stephen Meek
- Roslin Institute, University of Edinburgh, Easter Bush, Midlothian EH25 9RG, UK
| | - Tom Burdon
- Roslin Institute, University of Edinburgh, Easter Bush, Midlothian EH25 9RG, UK
| | - Alexander Medvinsky
- MRC Centre for Regenerative Medicine, University of Edinburgh, 5 Little France Drive, Edinburgh EH16 4UU, UK; Institute for Stem Cell Research, Centre for Regenerative Medicine, 5 Little France Drive, Edinburgh EH16 4UU, UK
| | - Lesley M Forrester
- MRC Centre for Regenerative Medicine, University of Edinburgh, 5 Little France Drive, Edinburgh EH16 4UU, UK.
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37
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Multispecies RNA tomography reveals regulators of hematopoietic stem cell birth in the embryonic aorta. Blood 2021; 136:831-844. [PMID: 32457985 DOI: 10.1182/blood.2019004446] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2019] [Accepted: 04/26/2020] [Indexed: 12/12/2022] Open
Abstract
The defined location of a stem cell within a niche regulates its fate, behavior, and molecular identity via a complex extrinsic regulation that is far from being fully elucidated. To explore the molecular characteristics and key components of the aortic microenvironment, where the first hematopoietic stem cells are generated during development, we performed genome-wide RNA tomography sequencing on zebrafish, chicken, mouse, and human embryos. The resulting anterior-posterior and dorsal-ventral transcriptional maps provided a powerful resource for exploring genes and regulatory pathways active in the aortic microenvironment. By performing interspecies comparative RNA sequencing analyses and functional assays, we explored the complexity of the aortic microenvironment landscape and the fine-tuning of various factors interacting to control hematopoietic stem cell generation, both in time and space in vivo, including the ligand-receptor couple ADM-RAMP2 and SVEP1. Understanding the regulatory function of the local environment will pave the way for improved stem cell production in vitro and clinical cell therapy.
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38
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Cazzola A, Cazzaniga G, Biondi A, Meneveri R, Brunelli S, Azzoni E. Prenatal Origin of Pediatric Leukemia: Lessons From Hematopoietic Development. Front Cell Dev Biol 2021; 8:618164. [PMID: 33511126 PMCID: PMC7835397 DOI: 10.3389/fcell.2020.618164] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2020] [Accepted: 12/15/2020] [Indexed: 12/24/2022] Open
Abstract
Several lines of evidence suggest that childhood leukemia, the most common cancer in young age, originates during in utero development. However, our knowledge of the cellular origin of this large and heterogeneous group of malignancies is still incomplete. The identification and characterization of their cell of origin is of crucial importance in order to define the processes that initiate and sustain disease progression, to refine faithful animal models and to identify novel therapeutic approaches. During embryogenesis, hematopoiesis takes place at different anatomical sites in sequential waves, and occurs in both a hematopoietic stem cell (HSC)-dependent and a HSC-independent fashion. Despite the recently described relevance and complexity of HSC-independent hematopoiesis, few studies have so far investigated its potential involvement in leukemogenesis. Here, we review the current knowledge on prenatal origin of leukemias in the context of recent insights in developmental hematopoiesis.
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Affiliation(s)
- Anna Cazzola
- School of Medicine and Surgery, University of Milano-Bicocca, Milan, Italy
| | - Giovanni Cazzaniga
- School of Medicine and Surgery, University of Milano-Bicocca, Milan, Italy.,Centro Ricerca Tettamanti, University of Milano-Bicocca, Milan, Italy
| | - Andrea Biondi
- School of Medicine and Surgery, University of Milano-Bicocca, Milan, Italy.,Centro Ricerca Tettamanti, University of Milano-Bicocca, Milan, Italy.,Pediatrics, Fondazione MBBM/Ospedale San Gerardo, University of Milano-Bicocca, Milan, Italy
| | - Raffaella Meneveri
- School of Medicine and Surgery, University of Milano-Bicocca, Milan, Italy
| | - Silvia Brunelli
- School of Medicine and Surgery, University of Milano-Bicocca, Milan, Italy
| | - Emanuele Azzoni
- School of Medicine and Surgery, University of Milano-Bicocca, Milan, Italy
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39
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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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40
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Yeung AK, Villacorta-Martin C, Hon S, Rock JR, Murphy GJ. Lung megakaryocytes display distinct transcriptional and phenotypic properties. Blood Adv 2020; 4:6204-6217. [PMID: 33351116 PMCID: PMC7757004 DOI: 10.1182/bloodadvances.2020002843] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Accepted: 11/18/2020] [Indexed: 12/11/2022] Open
Abstract
Megakaryocytes (MKs) are responsible for platelet biogenesis, which is believed to occur canonically in adult bone marrow (BM) and in the fetal liver during development. However, emerging evidence highlights the lung as a previously underappreciated residence for MKs that may contribute significantly to circulating platelet mass. Although a diversity of cells specific to the BM is known to promote the maturation and trafficking of MKs, little investigation into the impact of the lung niche on the development and function of MKs has been done. Here, we describe the application of single-cell RNA sequencing, coupled with histological, ploidy, and flow cytometric analyses, to profile primary MKs derived from syngeneic mouse lung and hematopoietic tissues. Transcriptional profiling demonstrated that lung MKs have a unique signature distinct from their hematopoietic counterparts, with lung MKs displaying enrichment for maturation markers, potentially indicating a propensity for more efficient platelet production. Reciprocally, fetal lung MKs also showed the robust expression of cytokines and growth factors that are known to promote lung development. Lastly, lung MKs possess an enrichment profile skewed toward roles in immunity and inflammation. These findings highlight the existence of a lung-specific MK phenotype and support the notion that the lung plays an independent role in the development and functional maturation of MKs. The immune phenotype displayed by lung MKs also introduces their potential role in microbial surveillance and antigen presentation.
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Affiliation(s)
- Anthony K Yeung
- Center for Regenerative Medicine of Boston University and Boston Medical Center, Boston, MA; and
- Section of Hematology and Medical Oncology and
| | - Carlos Villacorta-Martin
- Center for Regenerative Medicine of Boston University and Boston Medical Center, Boston, MA; and
| | - Stephanie Hon
- Center for Regenerative Medicine of Boston University and Boston Medical Center, Boston, MA; and
- Pulmonary Center and Department of Medicine, Boston University School of Medicine, Boston, MA
| | - Jason R Rock
- Center for Regenerative Medicine of Boston University and Boston Medical Center, Boston, MA; and
- Pulmonary Center and Department of Medicine, Boston University School of Medicine, Boston, MA
| | - George J Murphy
- Center for Regenerative Medicine of Boston University and Boston Medical Center, Boston, MA; and
- Section of Hematology and Medical Oncology and
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41
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Fidanza A, Stumpf PS, Ramachandran P, Tamagno S, Babtie A, Lopez-Yrigoyen M, Taylor AH, Easterbrook J, Henderson BEP, Axton R, Henderson NC, Medvinsky A, Ottersbach K, Romanò N, Forrester LM. Single-cell analyses and machine learning define hematopoietic progenitor and HSC-like cells derived from human PSCs. Blood 2020; 136:2893-2904. [PMID: 32614947 PMCID: PMC7862875 DOI: 10.1182/blood.2020006229] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2020] [Accepted: 06/20/2020] [Indexed: 01/19/2023] Open
Abstract
Hematopoietic stem and progenitor cells (HSPCs) develop in distinct waves at various anatomical sites during embryonic development. The in vitro differentiation of human pluripotent stem cells (hPSCs) recapitulates some of these processes; however, it has proven difficult to generate functional hematopoietic stem cells (HSCs). To define the dynamics and heterogeneity of HSPCs that can be generated in vitro from hPSCs, we explored single-cell RNA sequencing (scRNAseq) in combination with single-cell protein expression analysis. Bioinformatics analyses and functional validation defined the transcriptomes of naïve progenitors and erythroid-, megakaryocyte-, and leukocyte-committed progenitors, and we identified CD44, CD326, ICAM2/CD9, and CD18, respectively, as markers of these progenitors. Using an artificial neural network that we trained on scRNAseq derived from human fetal liver, we identified a wide range of hPSC-derived HSPCs phenotypes, including a small group classified as HSCs. This transient HSC-like population decreased as differentiation proceeded, and was completely missing in the data set that had been generated using cells selected on the basis of CD43 expression. By comparing the single-cell transcriptome of in vitro-generated HSC-like cells with those generated within the fetal liver, we identified transcription factors and molecular pathways that can be explored in the future to improve the in vitro production of HSCs.
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Affiliation(s)
- Antonella Fidanza
- Centre for Regenerative Medicine, University of Edinburgh, Edinburgh, United Kingdom
| | - Patrick S Stumpf
- Joint Research Center for Computational Biomedicine, Uniklinik Rheinisch-Westfälische Technische Hochschule (RWTH) Aachen, Aachen, Germany
| | - Prakash Ramachandran
- Centre for Inflammation Research, University of Edinburgh, Edinburgh, United Kingdom
| | - Sara Tamagno
- Centre for Regenerative Medicine, University of Edinburgh, Edinburgh, United Kingdom
| | - Ann Babtie
- Centre for Integrative Systems Biology and Bioinformatics, Department of Life Sciences, Imperial College London, London, United Kingdom; and
| | - Martha Lopez-Yrigoyen
- Centre for Regenerative Medicine, University of Edinburgh, Edinburgh, United Kingdom
| | - A Helen Taylor
- Centre for Regenerative Medicine, University of Edinburgh, Edinburgh, United Kingdom
| | - Jennifer Easterbrook
- Centre for Regenerative Medicine, University of Edinburgh, Edinburgh, United Kingdom
| | - Beth E P Henderson
- Centre for Inflammation Research, University of Edinburgh, Edinburgh, United Kingdom
| | - Richard Axton
- Centre for Regenerative Medicine, University of Edinburgh, Edinburgh, United Kingdom
| | - Neil C Henderson
- Centre for Inflammation Research, University of Edinburgh, Edinburgh, United Kingdom
| | - Alexander Medvinsky
- Centre for Regenerative Medicine, University of Edinburgh, Edinburgh, United Kingdom
| | - Katrin Ottersbach
- Centre for Regenerative Medicine, University of Edinburgh, Edinburgh, United Kingdom
| | - Nicola Romanò
- Centre for Discovery Brain Sciences, University of Edinburgh, Edinburgh, United Kingdom
| | - Lesley M Forrester
- Centre for Regenerative Medicine, University of Edinburgh, Edinburgh, United Kingdom
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42
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Heck AM, Ishida T, Hadland B. Location, Location, Location: How Vascular Specialization Influences Hematopoietic Fates During Development. Front Cell Dev Biol 2020; 8:602617. [PMID: 33282876 PMCID: PMC7691428 DOI: 10.3389/fcell.2020.602617] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2020] [Accepted: 09/30/2020] [Indexed: 01/22/2023] Open
Abstract
During embryonic development, sequential waves of hematopoiesis give rise to blood-forming cells with diverse lineage potentials and self-renewal properties. This process must accomplish two important yet divergent goals: the rapid generation of differentiated blood cells to meet the needs of the developing embryo and the production of a reservoir of hematopoietic stem cells to provide for life-long hematopoiesis in the adult. Vascular beds in distinct anatomical sites of extraembryonic tissues and the embryo proper provide the necessary conditions to support these divergent objectives, suggesting a critical role for specialized vascular niche cells in regulating disparate blood cell fates during development. In this review, we will examine the current understanding of how organ- and stage-specific vascular niche specialization contributes to the development of the hematopoietic system.
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Affiliation(s)
- Adam M Heck
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA, United States
| | - Takashi Ishida
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA, United States
| | - Brandon Hadland
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA, United States.,Department of Pediatrics, University of Washington School of Medicine, Seattle, WA, United States
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43
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Netsrithong R, Suwanpitak S, Boonkaew B, Trakarnsanga K, Chang LJ, Tipgomut C, Vatanashevanopakorn C, Pattanapanyasat K, Wattanapanitch M. Multilineage differentiation potential of hematoendothelial progenitors derived from human induced pluripotent stem cells. Stem Cell Res Ther 2020; 11:481. [PMID: 33176890 PMCID: PMC7659123 DOI: 10.1186/s13287-020-01997-w] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Accepted: 10/25/2020] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Human induced pluripotent stem cells (hiPSCs) offer a renewable source of cells for the generation of hematopoietic cells for cell-based therapy, disease modeling, and drug screening. However, current serum/feeder-free differentiation protocols rely on the use of various cytokines, which makes the process very costly or the generation of embryoid bodies (EBs), which are labor-intensive and can cause heterogeneity during differentiation. Here, we report a simple feeder and serum-free monolayer protocol for efficient generation of iPSC-derived multipotent hematoendothelial progenitors (HEPs), which can further differentiate into endothelial and hematopoietic cells including erythroid and T lineages. METHODS Formation of HEPs from iPSCs was initiated by inhibition of GSK3 signaling for 2 days followed by the addition of VEGF and FGF2 for 3 days. The HEPs were further induced toward mature endothelial cells (ECs) in an angiogenic condition and toward T cells by co-culturing with OP9-DL1 feeder cells. Endothelial-to-hematopoietic transition (EHT) of the HEPs was further promoted by supplementation with the TGF-β signaling inhibitor. Erythroid differentiation was performed by culturing the hematopoietic stem/progenitor cells (HSPCs) in a three-stage erythroid liquid culture system. RESULTS Our protocol significantly enhanced the number of KDR+ CD34+ CD31+ HEPs on day 5 of differentiation. Further culture of HEPs in angiogenic conditions promoted the formation of mature ECs, which expressed CD34, CD31, CD144, vWF, and ICAM-1, and could exhibit the formation of vascular-like network and acetylated low-density lipoprotein (Ac-LDL) uptake. In addition, the HEPs were differentiated into CD8+ T lymphocytes, which could be expanded up to 34-fold upon TCR stimulation. Inhibition of TGF-β signaling at the HEP stage promoted EHT and yielded a large number of HSPCs expressing CD34 and CD43. Upon erythroid differentiation, these HSPCs were expanded up to 40-fold and displayed morphological changes following stages of erythroid development. CONCLUSION This protocol offers an efficient and simple approach for the generation of multipotent HEPs and could be adapted to generate desired blood cells in large numbers for applications in basic research including developmental study, disease modeling, and drug screening as well as in regenerative medicine.
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Affiliation(s)
- Ratchapong Netsrithong
- Siriraj Center for Regenerative Medicine, Research Department, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, 10700, Thailand.,Department of Immunology, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Siriwal Suwanpitak
- Siriraj Center for Regenerative Medicine, Research Department, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, 10700, Thailand
| | - Bootsakorn Boonkaew
- Siriraj Center for Regenerative Medicine, Research Department, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, 10700, Thailand
| | - Kongtana Trakarnsanga
- Department of Biochemistry, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Lung-Ji Chang
- Shenzhen Genoimmune Medical Institute, Shenzhen, China
| | - Chartsiam Tipgomut
- Department of Biochemistry, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Chinnavuth Vatanashevanopakorn
- Siriraj Center for Regenerative Medicine, Research Department, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, 10700, Thailand.,Department of Biochemistry, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Kovit Pattanapanyasat
- Siriraj Center for Regenerative Medicine, Research Department, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, 10700, Thailand.,Siriraj Center of Research Excellence for Microparticle and Exosome in Diseases, Research Department, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Methichit Wattanapanitch
- Siriraj Center for Regenerative Medicine, Research Department, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, 10700, Thailand.
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44
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Rodrigues CP, Shvedunova M, Akhtar A. Epigenetic Regulators as the Gatekeepers of Hematopoiesis. Trends Genet 2020; 37:S0168-9525(20)30251-1. [PMID: 34756331 DOI: 10.1016/j.tig.2020.09.015] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Revised: 09/12/2020] [Accepted: 09/15/2020] [Indexed: 02/06/2023]
Abstract
Hematopoiesis is the process by which both fetal and adult organisms derive the full repertoire of blood cells from a single multipotent progenitor cell type, the hematopoietic stem cells (HSCs). Correct enactment of this process relies on a synergistic interplay between genetically encoded differentiation programs and a host of cell-intrinsic and cell-extrinsic factors. These include the influence of the HSC niche microenvironment, action of specific transcription factors, and alterations in intracellular metabolic state. The consolidation of these inputs with the genetically encoded program into a coherent differentiation program for each lineage is thought to rely on epigenetic modifiers. Recent work has delineated the precise contributions of different classes of epigenetic modifiers to HSC self-renewal as well as lineage specification and differentiation into various cell types. Here, we bring together what is currently known about chromatin status and the development of cells in the hematopoietic system under normal and abnormal conditions.
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Affiliation(s)
- Cecilia Pessoa Rodrigues
- Department of Chromatin Regulation, Max Planck Institute of Immunobiology and Epigenetics, 79108 Freiburg, Germany; University of Freiburg, Faculty of Biology, Schaenzlestrasse 1, 79104 Freiburg, Germany; International Max Planck Research School for Molecular and Cellular Biology (IMPRS-MCB), Freiburg, Germany
| | - Maria Shvedunova
- Department of Chromatin Regulation, Max Planck Institute of Immunobiology and Epigenetics, 79108 Freiburg, Germany
| | - Asifa Akhtar
- Department of Chromatin Regulation, Max Planck Institute of Immunobiology and Epigenetics, 79108 Freiburg, Germany.
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45
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Crosse EI, Gordon-Keylock S, Rybtsov S, Binagui-Casas A, Felchle H, Nnadi NC, Kirschner K, Chandra T, Tamagno S, Webb DJ, Rossi F, Anderson RA, Medvinsky A. Multi-layered Spatial Transcriptomics Identify Secretory Factors Promoting Human Hematopoietic Stem Cell Development. Cell Stem Cell 2020; 27:822-839.e8. [PMID: 32946788 PMCID: PMC7671940 DOI: 10.1016/j.stem.2020.08.004] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2020] [Revised: 05/25/2020] [Accepted: 08/07/2020] [Indexed: 01/30/2023]
Abstract
Hematopoietic stem cells (HSCs) first emerge in the embryonic aorta-gonad-mesonephros (AGM) region. Studies of model organisms defined intersecting signaling pathways that converge to promote HSC emergence predominantly in the ventral domain of the dorsal aorta. Much less is known about mechanisms driving HSC development in humans. Here, to identify secreted signals underlying human HSC development, we combined spatial transcriptomics analysis of dorsoventral polarized signaling in the aorta with gene expression profiling of sorted cell populations and single cells. Our analysis revealed a subset of aortic endothelial cells with a downregulated arterial signature and a predicted lineage relationship with the emerging HSC/progenitor population. Analysis of the ventrally polarized molecular landscape identified endothelin 1 as an important secreted regulator of human HSC development. The obtained gene expression datasets will inform future studies on mechanisms of HSC development in vivo and on generation of clinically relevant HSCs in vitro. Spatial transcriptome profiling of the human HSC developmental niche Characterization of an HSC precursor population at single-cell resolution Cardiac EGF pathway is ventrally enriched next to developing IAHCs/HSCs Ventrally secreted endothelin promotes development of HSCs
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Affiliation(s)
- Edie I Crosse
- MRC Centre for Regenerative Medicine, University of Edinburgh, Edinburgh EH16 4UU, UK
| | | | - Stanislav Rybtsov
- MRC Centre for Regenerative Medicine, University of Edinburgh, Edinburgh EH16 4UU, UK
| | - Anahi Binagui-Casas
- MRC Centre for Regenerative Medicine, University of Edinburgh, Edinburgh EH16 4UU, UK
| | - Hannah Felchle
- MRC Centre for Regenerative Medicine, University of Edinburgh, Edinburgh EH16 4UU, UK
| | - Nneka C Nnadi
- MRC Centre for Regenerative Medicine, University of Edinburgh, Edinburgh EH16 4UU, UK
| | - Kristina Kirschner
- Institute of Cancer Sciences, University of Glasgow, Bearsden G61 1QH, UK
| | - Tamir Chandra
- MRC Human Genetics Unit, University of Edinburgh, Edinburgh EH4 2XU, UK
| | - Sara Tamagno
- MRC Centre for Regenerative Medicine, University of Edinburgh, Edinburgh EH16 4UU, UK
| | - David J Webb
- BHF Centre for Cardiovascular Science, University of Edinburgh, Edinburgh EH16 4TJ, UK
| | - Fiona Rossi
- MRC Centre for Regenerative Medicine, University of Edinburgh, Edinburgh EH16 4UU, UK
| | - Richard A Anderson
- MRC Centre for Reproductive Health, University of Edinburgh, Edinburgh EH16 4TJ UK
| | - Alexander Medvinsky
- MRC Centre for Regenerative Medicine, University of Edinburgh, Edinburgh EH16 4UU, UK.
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46
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Chen MJ, Lummertz da Rocha E, Cahan P, Kubaczka C, Hunter P, Sousa P, Mullin NK, Fujiwara Y, Nguyen M, Tan Y, Landry S, Han A, Yang S, Lu YF, Jha DK, Vo LT, Zhou Y, North TE, Zon LI, Daley GQ, Schlaeger TM. Transcriptome Dynamics of Hematopoietic Stem Cell Formation Revealed Using a Combinatorial Runx1 and Ly6a Reporter System. Stem Cell Reports 2020; 14:956-971. [PMID: 32302558 PMCID: PMC7220988 DOI: 10.1016/j.stemcr.2020.03.020] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2017] [Revised: 03/18/2020] [Accepted: 03/19/2020] [Indexed: 01/01/2023] Open
Abstract
Studies of hematopoietic stem cell (HSC) development from pre-HSC-producing hemogenic endothelial cells (HECs) are hampered by the rarity of these cells and the presence of other cell types with overlapping marker expression profiles. We generated a Tg(Runx1-mKO2; Ly6a-GFP) dual reporter mouse to visualize hematopoietic commitment and study pre-HSC emergence and maturation. Runx1-mKO2 marked all intra-arterial HECs and hematopoietic cluster cells (HCCs), including pre-HSCs, myeloid- and lymphoid progenitors, and HSCs themselves. However, HSC and lymphoid potential were almost exclusively found in reporter double-positive (DP) cells. Robust HSC activity was first detected in DP cells of the placenta, reflecting the importance of this niche for (pre-)HSC maturation and expansion before the fetal liver stage. A time course analysis by single-cell RNA sequencing revealed that as pre-HSCs mature into fetal liver stage HSCs, they show signs of interferon exposure, exhibit signatures of multi-lineage differentiation gene expression, and develop a prolonged cell cycle reminiscent of quiescent adult HSCs. A Runx1 and Ly6a dual reporter system identifies intra-arterial HECs Lymphoid and HSC potential is restricted to dual reporter double-positive cells The placenta is the first major niche for HSC maturation and expansion Single-cell RNA-seq analyses reveal early acquisition of a quiescent HSC phenotype
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Affiliation(s)
- Michael J Chen
- Division of Pediatric Hematology/Oncology, Boston Children's Hospital and Dana Farber Cancer Institute, Harvard Medical School, Boston, MA 02115, USA; Stem Cell Program, Boston Children's Hospital, Harvard Medical School, Boston, MA 02115, USA; Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA 02115, USA.
| | - Edroaldo Lummertz da Rocha
- Division of Pediatric Hematology/Oncology, Boston Children's Hospital and Dana Farber Cancer Institute, Harvard Medical School, Boston, MA 02115, USA; Stem Cell Program, Boston Children's Hospital, Harvard Medical School, Boston, MA 02115, USA; Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA 02115, USA
| | - Patrick Cahan
- Department of Biomedical Engineering, Institute for Cell Engineering, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Caroline Kubaczka
- Division of Pediatric Hematology/Oncology, Boston Children's Hospital and Dana Farber Cancer Institute, Harvard Medical School, Boston, MA 02115, USA; Stem Cell Program, Boston Children's Hospital, Harvard Medical School, Boston, MA 02115, USA; Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA 02115, USA
| | - Phoebe Hunter
- Division of Pediatric Hematology/Oncology, Boston Children's Hospital and Dana Farber Cancer Institute, Harvard Medical School, Boston, MA 02115, USA; Stem Cell Program, Boston Children's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Patricia Sousa
- Division of Pediatric Hematology/Oncology, Boston Children's Hospital and Dana Farber Cancer Institute, Harvard Medical School, Boston, MA 02115, USA; Stem Cell Program, Boston Children's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Nathaniel K Mullin
- Division of Pediatric Hematology/Oncology, Boston Children's Hospital and Dana Farber Cancer Institute, Harvard Medical School, Boston, MA 02115, USA; Stem Cell Program, Boston Children's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Yuko Fujiwara
- Division of Pediatric Hematology/Oncology, Boston Children's Hospital and Dana Farber Cancer Institute, Harvard Medical School, Boston, MA 02115, USA
| | - Minh Nguyen
- Division of Pediatric Hematology/Oncology, Boston Children's Hospital and Dana Farber Cancer Institute, Harvard Medical School, Boston, MA 02115, USA
| | - Yuqi Tan
- Department of Biomedical Engineering, Institute for Cell Engineering, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Samuel Landry
- Division of Pediatric Hematology/Oncology, Boston Children's Hospital and Dana Farber Cancer Institute, Harvard Medical School, Boston, MA 02115, USA; Stem Cell Program, Boston Children's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Areum Han
- Division of Pediatric Hematology/Oncology, Boston Children's Hospital and Dana Farber Cancer Institute, Harvard Medical School, Boston, MA 02115, USA; Stem Cell Program, Boston Children's Hospital, Harvard Medical School, Boston, MA 02115, USA; Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA 02115, USA
| | - Song Yang
- Division of Pediatric Hematology/Oncology, Boston Children's Hospital and Dana Farber Cancer Institute, Harvard Medical School, Boston, MA 02115, USA; Stem Cell Program, Boston Children's Hospital, Harvard Medical School, Boston, MA 02115, USA; Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA 02115, USA
| | - Yi-Fen Lu
- Division of Pediatric Hematology/Oncology, Boston Children's Hospital and Dana Farber Cancer Institute, Harvard Medical School, Boston, MA 02115, USA; Stem Cell Program, Boston Children's Hospital, Harvard Medical School, Boston, MA 02115, USA; Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA 02115, USA
| | - Deepak Kumar Jha
- Division of Pediatric Hematology/Oncology, Boston Children's Hospital and Dana Farber Cancer Institute, Harvard Medical School, Boston, MA 02115, USA; Stem Cell Program, Boston Children's Hospital, Harvard Medical School, Boston, MA 02115, USA; Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA 02115, USA
| | - Linda T Vo
- Division of Pediatric Hematology/Oncology, Boston Children's Hospital and Dana Farber Cancer Institute, Harvard Medical School, Boston, MA 02115, USA; Stem Cell Program, Boston Children's Hospital, Harvard Medical School, Boston, MA 02115, USA; Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA 02115, USA
| | - Yi Zhou
- Division of Pediatric Hematology/Oncology, Boston Children's Hospital and Dana Farber Cancer Institute, Harvard Medical School, Boston, MA 02115, USA; Stem Cell Program, Boston Children's Hospital, Harvard Medical School, Boston, MA 02115, USA; Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA 02115, USA
| | - Trista E North
- Division of Pediatric Hematology/Oncology, Boston Children's Hospital and Dana Farber Cancer Institute, Harvard Medical School, Boston, MA 02115, USA; Stem Cell Program, Boston Children's Hospital, Harvard Medical School, Boston, MA 02115, USA; Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA 02115, USA; Harvard Stem Cell Institute, Harvard University, Boston, MA, USA
| | - Leonard I Zon
- Division of Pediatric Hematology/Oncology, Boston Children's Hospital and Dana Farber Cancer Institute, Harvard Medical School, Boston, MA 02115, USA; Stem Cell Program, Boston Children's Hospital, Harvard Medical School, Boston, MA 02115, USA; Harvard Stem Cell Institute, Harvard University, Boston, MA, USA; Howard Hughes Medical Institute, Harvard University, Boston, MA, USA; Stem Cell and Regenerative Biology Department, Harvard University, Boston, MA, USA
| | - George Q Daley
- Division of Pediatric Hematology/Oncology, Boston Children's Hospital and Dana Farber Cancer Institute, Harvard Medical School, Boston, MA 02115, USA; Stem Cell Program, Boston Children's Hospital, Harvard Medical School, Boston, MA 02115, USA; Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA 02115, USA; Harvard Stem Cell Institute, Harvard University, Boston, MA, USA
| | - Thorsten M Schlaeger
- Division of Pediatric Hematology/Oncology, Boston Children's Hospital and Dana Farber Cancer Institute, Harvard Medical School, Boston, MA 02115, USA; Stem Cell Program, Boston Children's Hospital, Harvard Medical School, Boston, MA 02115, USA; Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA 02115, USA; Harvard Stem Cell Institute, Harvard University, Boston, MA, USA.
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47
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Faltusová K, Chen CL, Heizer T, Báječný M, Szikszai K, Páral P, Savvulidi F, Renešová N, Nečas E. Altered Erythro-Myeloid Progenitor Cells Are Highly Expanded in Intensively Regenerating Hematopoiesis. Front Cell Dev Biol 2020; 8:98. [PMID: 32258026 PMCID: PMC7051989 DOI: 10.3389/fcell.2020.00098] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2019] [Accepted: 02/07/2020] [Indexed: 12/11/2022] Open
Abstract
Regeneration of severely damaged adult tissues is currently only partially understood. Hematopoietic tissue provides a unique opportunity to study tissue regeneration due to its well established steady-state structure and function, easy accessibility, well established research methods, and the well-defined embryonic, fetal, and adult stages of development. Embryonic/fetal liver hematopoiesis and adult hematopoiesis recovering from damage share the need to expand populations of progenitors and stem cells in parallel with increasing production of mature blood cells. In the present study, we analyzed adult hematopoiesis in mice subjected to a submyeloablative dose (6 Gy) of gamma radiation and targeted the period of regeneration characterized by massive production of mature blood cells along with ongoing expansion of immature hematopoietic cells. We uncovered significantly expanded populations of developmentally advanced erythroid and myeloid progenitors with significantly altered immunophenotype. Their population expansion does not require erythropoietin stimulation but requires the SCF/c-Kit receptor signaling. Regenerating hematopoiesis significantly differs from the expanding hematopoiesis in the fetal liver but we find some similarities between the regenerating hematopoiesis and the early embryonic definitive hematopoiesis. These are in (1) the concomitant population expansion of myeloid progenitors and increasing production of myeloid blood cells (2) performing these tasks despite the severely reduced transplantation capacity of the hematopoietic tissues, and (3) the expression of CD16/32 in most progenitors. Our data thus provide a novel insight into tissue regeneration by suggesting that cells other than stem cells and multipotent progenitors can be of fundamental importance for the rapid recovery of tissue function.
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Affiliation(s)
- Kateřina Faltusová
- Institute of Pathological Physiology, First Faculty of Medicine, Charles University, Prague, Czechia
| | - Chia-Ling Chen
- Institute of Pathological Physiology, First Faculty of Medicine, Charles University, Prague, Czechia
| | - Tomáš Heizer
- Institute of Pathological Physiology, First Faculty of Medicine, Charles University, Prague, Czechia.,BIOCEV, First Faculty of Medicine, Charles University, Vestec, Czechia
| | - Martin Báječný
- Institute of Pathological Physiology, First Faculty of Medicine, Charles University, Prague, Czechia
| | - Katarina Szikszai
- Institute of Pathological Physiology, First Faculty of Medicine, Charles University, Prague, Czechia
| | - Petr Páral
- Institute of Pathological Physiology, First Faculty of Medicine, Charles University, Prague, Czechia
| | - Filipp Savvulidi
- Institute of Pathological Physiology, First Faculty of Medicine, Charles University, Prague, Czechia
| | - Nicol Renešová
- Institute of Pathological Physiology, First Faculty of Medicine, Charles University, Prague, Czechia.,BIOCEV, First Faculty of Medicine, Charles University, Vestec, Czechia
| | - Emanuel Nečas
- Institute of Pathological Physiology, First Faculty of Medicine, Charles University, Prague, Czechia.,BIOCEV, First Faculty of Medicine, Charles University, Vestec, Czechia
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48
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Ganuza M, Hall T, Obeng EA, McKinney-Freeman S. Clones assemble! The clonal complexity of blood during ontogeny and disease. Exp Hematol 2020; 83:35-47. [PMID: 32006606 DOI: 10.1016/j.exphem.2020.01.009] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2019] [Revised: 01/13/2020] [Accepted: 01/21/2020] [Indexed: 01/30/2023]
Abstract
Hematopoietic stem and progenitor cells (HSPCs) govern the daily expansion and turnover of billions of specialized blood cells. Given their clinical utility, much effort has been made toward understanding the dynamics of hematopoietic production from this pool of stem cells. An understanding of hematopoietic stem cell clonal dynamics during blood ontogeny could yield important insights into hematopoietic regulation, especially during aging and repeated exposure to hematopoietic stress-insults that may predispose individuals to the development of hematopoietic disease. Here, we review the current state of research regarding the clonal complexity of the hematopoietic system during embryogenesis, adulthood, and hematologic disease.
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Affiliation(s)
- Miguel Ganuza
- Department of Hematology, St. Jude Children's Research Hospital, Memphis, TN
| | - Trent Hall
- Department of Hematology, St. Jude Children's Research Hospital, Memphis, TN
| | - Esther A Obeng
- Department of Oncology, St. Jude Children's Research Hospital, Memphis, TN
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49
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Oatley M, Bölükbası ÖV, Svensson V, Shvartsman M, Ganter K, Zirngibl K, Pavlovich PV, Milchevskaya V, Foteva V, Natarajan KN, Baying B, Benes V, Patil KR, Teichmann SA, Lancrin C. Single-cell transcriptomics identifies CD44 as a marker and regulator of endothelial to haematopoietic transition. Nat Commun 2020; 11:586. [PMID: 31996681 PMCID: PMC6989687 DOI: 10.1038/s41467-019-14171-5] [Citation(s) in RCA: 56] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2018] [Accepted: 12/18/2019] [Indexed: 12/13/2022] Open
Abstract
The endothelial to haematopoietic transition (EHT) is the process whereby haemogenic endothelium differentiates into haematopoietic stem and progenitor cells (HSPCs). The intermediary steps of this process are unclear, in particular the identity of endothelial cells that give rise to HSPCs is unknown. Using single-cell transcriptome analysis and antibody screening, we identify CD44 as a marker of EHT enabling us to isolate robustly the different stages of EHT in the aorta-gonad-mesonephros (AGM) region. This allows us to provide a detailed phenotypical and transcriptional profile of CD44-positive arterial endothelial cells from which HSPCs emerge. They are characterized with high expression of genes related to Notch signalling, TGFbeta/BMP antagonists, a downregulation of genes related to glycolysis and the TCA cycle, and a lower rate of cell cycle. Moreover, we demonstrate that by inhibiting the interaction between CD44 and its ligand hyaluronan, we can block EHT, identifying an additional regulator of HSPC development. The endothelial to haematopoietic transition (EHT) is the process where haemogenic endothelium differentiates into haematopoietic stem and progenitor cells (HSPCs). Here the authors use single cell transcriptomics and antibody screening to identify CD44 as a marker of EHT that is required for EHT and HSPC development.
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Affiliation(s)
- Morgan Oatley
- European Molecular Biology Laboratory, EMBL Rome - Epigenetics and Neurobiology Unit, via E. Ramarini 32, 00015, Monterotondo, Italy
| | - Özge Vargel Bölükbası
- European Molecular Biology Laboratory, EMBL Rome - Epigenetics and Neurobiology Unit, via E. Ramarini 32, 00015, Monterotondo, Italy.,Stem Cell and Regenerative Biology Department, Harvard University, 7 Divinity Avenue, Cambridge, MA, 02138, USA
| | - Valentine Svensson
- Wellcome Trust Sanger Institute, Wellcome Genome Campus, Hinxton, UK.,European Molecular Biology Laboratory, EMBL-EBI, Wellcome Genome Campus, Hinxton, Cambridgeshire, CB10 1SD, UK.,Pachter Lab, Division of Biology and Biological Engineering, California Institute of Technology, 1200 East California Boulevard, Pasadena, CA, USA
| | - Maya Shvartsman
- European Molecular Biology Laboratory, EMBL Rome - Epigenetics and Neurobiology Unit, via E. Ramarini 32, 00015, Monterotondo, Italy
| | - Kerstin Ganter
- European Molecular Biology Laboratory, EMBL Rome - Epigenetics and Neurobiology Unit, via E. Ramarini 32, 00015, Monterotondo, Italy
| | - Katharina Zirngibl
- European Molecular Biology Laboratory, Structural and Computational Biology Unit, Meyerhofstrasse 1, 69117, Heidelberg, Germany
| | - Polina V Pavlovich
- European Molecular Biology Laboratory, EMBL Rome - Epigenetics and Neurobiology Unit, via E. Ramarini 32, 00015, Monterotondo, Italy.,Moscow Institute of Physics and Technology, Institutskii Per. 9, Moscow Region, Dolgoprudny, 141700, Russia.,Max Planck Institute of Immunobiology and Epigenetics, Stübeweg 51, D-79108, Freiburg, Germany
| | - Vladislava Milchevskaya
- European Molecular Biology Laboratory, Structural and Computational Biology Unit, Meyerhofstrasse 1, 69117, Heidelberg, Germany.,Institut für Medizinische Statistik und Bioinformatik, Bachemer Strasse 86, 50931, Köln, Germany
| | - Vladimira Foteva
- European Molecular Biology Laboratory, EMBL Rome - Epigenetics and Neurobiology Unit, via E. Ramarini 32, 00015, Monterotondo, Italy
| | - Kedar N Natarajan
- Wellcome Trust Sanger Institute, Wellcome Genome Campus, Hinxton, UK.,Department of Biochemistry and Molecular Biology, The University of Southern Denmark, Danish Institute for Advanced Study, Campusvej 55, 5230, Odense M, Denmark
| | - Bianka Baying
- European Molecular Biology Laboratory, Genomics Core Facility, Meyerhofstrasse 1, 69117, Heidelberg, Germany
| | - Vladimir Benes
- European Molecular Biology Laboratory, Genomics Core Facility, Meyerhofstrasse 1, 69117, Heidelberg, Germany
| | - Kiran R Patil
- European Molecular Biology Laboratory, Structural and Computational Biology Unit, Meyerhofstrasse 1, 69117, Heidelberg, Germany
| | - Sarah A Teichmann
- Wellcome Trust Sanger Institute, Wellcome Genome Campus, Hinxton, UK
| | - Christophe Lancrin
- European Molecular Biology Laboratory, EMBL Rome - Epigenetics and Neurobiology Unit, via E. Ramarini 32, 00015, Monterotondo, Italy.
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50
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Abstract
The generation of hematopoietic stem cells (HSCs) from pluripotent stem cell (PSC) sources is a long-standing goal that will require a comprehensive understanding of the molecular and cellular factors that determine HSC fate during embryogenesis. A precise interplay between niche components, such as the vascular, mesenchymal, primitive myeloid cells, and the nervous system provides the unique signaling milieu for the emergence of functional HSCs in the aorta-gonad-mesonephros (AGM) region. Over the last several years, the interrogation of these aspects in the embryo model and in the PSC differentiation system has provided valuable knowledge that will continue educating the design of more efficient protocols to enable the differentiation of PSCs into
bona fide, functionally transplantable HSCs. Herein, we provide a synopsis of early hematopoietic development, with particular focus on the recent discoveries and remaining questions concerning AGM hematopoiesis. Moreover, we acknowledge the recent advances towards the generation of HSCs
in vitro and discuss possible approaches to achieve this goal in light of the current knowledge.
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Affiliation(s)
- Ana G Freire
- Center for Discovery and Innovation, Hackensack University Medical Center, Nutley, USA
| | - Jason M Butler
- Center for Discovery and Innovation, Hackensack University Medical Center, Nutley, USA.,Molecular Oncology Program, Georgetown University, Washington D.C., USA
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