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Dzien P, Raffo Iraolagoitia X, May S, Stevenson D, McGarry L, Soloviev D, Brown G, Nixon C, Kapeni C, De La Roche M, Blyth K, Lyons S, Bird T, Strathdee D, Fruhwirth G, Carlin L, Lewis D. Multi-scale in vivo imaging of tumour development using a germline conditional triple-reporter system. Res Sq 2024:rs.3.rs-4196140. [PMID: 38645088 PMCID: PMC11030518 DOI: 10.21203/rs.3.rs-4196140/v1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/23/2024]
Abstract
Imaging reporter genes are indispensable for visualising biological processes in living subjects, particularly in cancer research where they have been used to observe tumour development, cancer cell dissemination, and treatment response. Engineering reporter genes into the germline frequently involves single imaging modality reporters operating over limited spatial scales. To address these limitations, we developed an inducible triple-reporter mouse model (Rosa26LSL - NRL) that integrates reporters for complementary imaging modalities, flfluorescence, bioluminescence and positron emission tomography (PET), along with inducible Cre-lox functionality for precise spatiotemporal control of reporter expression. We demonstrated robust reporter inducibility across various tissues in the Rosa26LSL - NRL mouse, facilitating effective tracking and characterisation of tumours in liver and lung cancer mouse models. We precisely pinpointed tumour location using multimodal whole-body imaging which guided in situ lung microscopy to visualise cell-cell interactions within the tumour microenvironment. The triple-reporter system establishes a robust new platform technology for multi-scale investigation of biological processes within whole animals, enabling tissue-specific and sensitive cell tracking, spanning from the whole-body to cellular scales.
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2
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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] [What about the content of this article? (0)] [Affiliation(s)] [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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Hanna J, Beke F, O'Brien LM, Kapeni C, Chen HC, Carbonaro V, Kim AB, Kishore K, Adolph TE, Skjoedt MO, Skjoedt K, de la Roche M, de la Roche M. Cell-autonomous Hedgehog signaling controls Th17 polarization and pathogenicity. Nat Commun 2022; 13:4075. [PMID: 35835905 PMCID: PMC9281293 DOI: 10.1038/s41467-022-31722-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2021] [Accepted: 06/30/2022] [Indexed: 11/17/2022] Open
Abstract
Th17 cells are key drivers of autoimmune disease. However, the signaling pathways regulating Th17 polarization are poorly understood. Hedgehog signaling regulates cell fate decisions during embryogenesis and adult tissue patterning. Here we find that cell-autonomous Hedgehog signaling, independent of exogenous ligands, selectively drives the polarization of Th17 cells but not other T helper cell subsets. We show that endogenous Hedgehog ligand, Ihh, signals to activate both canonical and non-canonical Hedgehog pathways through Gli3 and AMPK. We demonstrate that Hedgehog pathway inhibition with either the clinically-approved small molecule inhibitor vismodegib or genetic ablation of Ihh in CD4+ T cells greatly diminishes disease severity in two mouse models of intestinal inflammation. We confirm that Hedgehog pathway expression is upregulated in tissue from human ulcerative colitis patients and correlates with Th17 marker expression. This work implicates Hedgehog signaling in Th17 polarization and intestinal immunopathology and indicates the potential therapeutic use of Hedgehog inhibitors in the treatment of inflammatory bowel disease.
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Affiliation(s)
- Joachim Hanna
- Cancer Research UK Cambridge Institute, University of Cambridge, Robinson Way, Cambridge, CB2 0RE, UK
| | - Flavio Beke
- Cancer Research UK Cambridge Institute, University of Cambridge, Robinson Way, Cambridge, CB2 0RE, UK
| | - Louise M O'Brien
- Cancer Research UK Cambridge Institute, University of Cambridge, Robinson Way, Cambridge, CB2 0RE, UK
| | - Chrysa Kapeni
- Cancer Research UK Cambridge Institute, University of Cambridge, Robinson Way, Cambridge, CB2 0RE, UK
| | - Hung-Chang Chen
- Cancer Research UK Cambridge Institute, University of Cambridge, Robinson Way, Cambridge, CB2 0RE, UK
| | - Valentina Carbonaro
- Cancer Research UK Cambridge Institute, University of Cambridge, Robinson Way, Cambridge, CB2 0RE, UK
| | - Alexander B Kim
- Cancer Research UK Cambridge Institute, University of Cambridge, Robinson Way, Cambridge, CB2 0RE, UK
| | - Kamal Kishore
- Cancer Research UK Cambridge Institute, University of Cambridge, Robinson Way, Cambridge, CB2 0RE, UK
| | - Timon E Adolph
- Department of Internal Medicine I, Gastroenterology, Hepatology & Endocrinology, Medical University Innsbruck, Innsbruck, Austria
| | - Mikkel-Ole Skjoedt
- Rigshospitalet - University Hospital Copenhagen, Blegdamsvej 9, 2100, Copenhagen, Denmark
- Institute of Immunology and Microbiology, University of Copenhagen, Blegdamsvej 3B, 2200, Copenhagen, Denmark
| | - Karsten Skjoedt
- University of Southern Denmark, J.B.Winslows Vej, 5000, Odense C, Denmark
| | - Marc de la Roche
- Department of Biochemistry, University of Cambridge, 80 Tennis Court Road, Cambridge, CB2 1GA, UK
| | - Maike de la Roche
- Cancer Research UK Cambridge Institute, University of Cambridge, Robinson Way, Cambridge, CB2 0RE, UK.
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Gadomski S, Fielding C, García-García A, Korn C, Kapeni C, Ashraf S, Villadiego J, Toro RD, Domingues O, Skepper JN, Michel T, Zimmer J, Sendtner R, Dillon S, Poole KES, Holdsworth G, Sendtner M, Toledo-Aral JJ, De Bari C, McCaskie AW, Robey PG, Méndez-Ferrer S. A cholinergic neuroskeletal interface promotes bone formation during postnatal growth and exercise. Cell Stem Cell 2022; 29:528-544.e9. [PMID: 35276096 PMCID: PMC9033279 DOI: 10.1016/j.stem.2022.02.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2021] [Revised: 12/02/2021] [Accepted: 02/10/2022] [Indexed: 11/30/2022]
Abstract
The autonomic nervous system is a master regulator of homeostatic processes and stress responses. Sympathetic noradrenergic nerve fibers decrease bone mass, but the role of cholinergic signaling in bone has remained largely unknown. Here, we describe that early postnatally, a subset of sympathetic nerve fibers undergoes an interleukin-6 (IL-6)-induced cholinergic switch upon contacting the bone. A neurotrophic dependency mediated through GDNF-family receptor-α2 (GFRα2) and its ligand, neurturin (NRTN), is established between sympathetic cholinergic fibers and bone-embedded osteocytes, which require cholinergic innervation for their survival and connectivity. Bone-lining osteoprogenitors amplify and propagate cholinergic signals in the bone marrow (BM). Moderate exercise augments trabecular bone partly through an IL-6-dependent expansion of sympathetic cholinergic nerve fibers. Consequently, loss of cholinergic skeletal innervation reduces osteocyte survival and function, causing osteopenia and impaired skeletal adaptation to moderate exercise. These results uncover a cholinergic neuro-osteocyte interface that regulates skeletogenesis and skeletal turnover through bone-anabolic effects.
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Affiliation(s)
- Stephen Gadomski
- Wellcome-MRC Cambridge Stem Cell Institute, Cambridge CB2 0AW, UK; Department of Hematology, University of Cambridge, Cambridge CB2 0AW, UK; National Health Service Blood and Transplant, Cambridge Biomedical Campus, Cambridge CB2 0AW, UK; Skeletal Biology Section, National Institute of Dental and Craniofacial Research, National Institutes of Health, Department of Health and Human Services, Bethesda, MD 20892, USA; NIH Oxford-Cambridge Scholars Program in Partnership with Medical University of South Carolina, Charleston, SC 29425, USA
| | - Claire Fielding
- Wellcome-MRC Cambridge Stem Cell Institute, Cambridge CB2 0AW, UK; Department of Hematology, University of Cambridge, Cambridge CB2 0AW, UK; National Health Service Blood and Transplant, Cambridge Biomedical Campus, Cambridge CB2 0AW, UK
| | - Andrés García-García
- Wellcome-MRC Cambridge Stem Cell Institute, Cambridge CB2 0AW, UK; Department of Hematology, University of Cambridge, Cambridge CB2 0AW, UK; National Health Service Blood and Transplant, Cambridge Biomedical Campus, Cambridge CB2 0AW, UK
| | - Claudia Korn
- Wellcome-MRC Cambridge Stem Cell Institute, Cambridge CB2 0AW, UK; Department of Hematology, University of Cambridge, Cambridge CB2 0AW, UK; National Health Service Blood and Transplant, Cambridge Biomedical Campus, Cambridge CB2 0AW, UK
| | - Chrysa Kapeni
- Wellcome-MRC Cambridge Stem Cell Institute, Cambridge CB2 0AW, UK; Department of Hematology, University of Cambridge, Cambridge CB2 0AW, UK; National Health Service Blood and Transplant, Cambridge Biomedical Campus, Cambridge CB2 0AW, UK
| | - Sadaf Ashraf
- Arthritis and Regenerative Medicine Laboratory, Aberdeen Centre for Arthritis and Musculoskeletal Health, Institute of Medical Sciences, University of Aberdeen, Aberdeen AB25 2ZD, UK
| | - Javier Villadiego
- Instituto de Biomedicina de Sevilla-IBiS (Hospitales Universitarios Virgen del Rocío y Macarena/CSIC/Universidad de Sevilla), 41013 Seville, Spain; Departamento de Fisiología Médica y Biofísica, Universidad de Sevilla, 41009 Seville, Spain; Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas, (CIBERNED), Madrid 28029, Spain
| | - Raquel Del Toro
- Instituto de Biomedicina de Sevilla-IBiS (Hospitales Universitarios Virgen del Rocío y Macarena/CSIC/Universidad de Sevilla), 41013 Seville, Spain; Departamento de Fisiología Médica y Biofísica, Universidad de Sevilla, 41009 Seville, Spain
| | - Olivia Domingues
- Department of Infection and Immunity, Luxembourg Institute of Health, 4354 Esch-sur Alzette, Luxembourg
| | - Jeremy N Skepper
- Department of Physiology, Development, and Neuroscience, Cambridge Advanced Imaging Centre, University of Cambridge, Cambridge CB2 3DY, UK
| | - Tatiana Michel
- Department of Infection and Immunity, Luxembourg Institute of Health, 4354 Esch-sur Alzette, Luxembourg
| | - Jacques Zimmer
- Department of Infection and Immunity, Luxembourg Institute of Health, 4354 Esch-sur Alzette, Luxembourg
| | - Regine Sendtner
- Institute of Clinical Neurobiology, University Hospital of Wuerzburg, 97080 Wuerzburg, Germany
| | - Scott Dillon
- Wellcome-MRC Cambridge Stem Cell Institute, Cambridge CB2 0AW, UK
| | - Kenneth E S Poole
- Cambridge NIHR Biomedical Research Centre, Department of Medicine, University of Cambridge, Cambridge CB2 0QQ, UK
| | | | - Michael Sendtner
- Institute of Clinical Neurobiology, University Hospital of Wuerzburg, 97080 Wuerzburg, Germany
| | - Juan J Toledo-Aral
- Instituto de Biomedicina de Sevilla-IBiS (Hospitales Universitarios Virgen del Rocío y Macarena/CSIC/Universidad de Sevilla), 41013 Seville, Spain; Departamento de Fisiología Médica y Biofísica, Universidad de Sevilla, 41009 Seville, Spain; Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas, (CIBERNED), Madrid 28029, Spain
| | - Cosimo De Bari
- Arthritis and Regenerative Medicine Laboratory, Aberdeen Centre for Arthritis and Musculoskeletal Health, Institute of Medical Sciences, University of Aberdeen, Aberdeen AB25 2ZD, UK
| | - Andrew W McCaskie
- Wellcome-MRC Cambridge Stem Cell Institute, Cambridge CB2 0AW, UK; Department of Surgery, School of Clinical Medicine, University of Cambridge, Cambridge CB2 0QQ, UK
| | - Pamela G Robey
- Skeletal Biology Section, National Institute of Dental and Craniofacial Research, National Institutes of Health, Department of Health and Human Services, Bethesda, MD 20892, USA
| | - Simón Méndez-Ferrer
- Wellcome-MRC Cambridge Stem Cell Institute, Cambridge CB2 0AW, UK; Department of Hematology, University of Cambridge, Cambridge CB2 0AW, UK; National Health Service Blood and Transplant, Cambridge Biomedical Campus, Cambridge CB2 0AW, UK; Instituto de Biomedicina de Sevilla-IBiS (Hospitales Universitarios Virgen del Rocío y Macarena/CSIC/Universidad de Sevilla), 41013 Seville, Spain; Departamento de Fisiología Médica y Biofísica, Universidad de Sevilla, 41009 Seville, Spain.
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5
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Roelofs AJ, Kania K, Rafipay AJ, Sambale M, Kuwahara ST, Collins FL, Smeeton J, Serowoky MA, Rowley L, Wang H, Gronewold R, Kapeni C, Méndez-Ferrer S, Little CB, Bateman JF, Pap T, Mariani FV, Sherwood J, Crump JG, De Bari C. Identification of the skeletal progenitor cells forming osteophytes in osteoarthritis. Ann Rheum Dis 2020; 79:1625-1634. [PMID: 32963046 PMCID: PMC8136618 DOI: 10.1136/annrheumdis-2020-218350] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Revised: 08/09/2020] [Accepted: 08/11/2020] [Indexed: 12/11/2022]
Abstract
OBJECTIVES Osteophytes are highly prevalent in osteoarthritis (OA) and are associated with pain and functional disability. These pathological outgrowths of cartilage and bone typically form at the junction of articular cartilage, periosteum and synovium. The aim of this study was to identify the cells forming osteophytes in OA. METHODS Fluorescent genetic cell-labelling and tracing mouse models were induced with tamoxifen to switch on reporter expression, as appropriate, followed by surgery to induce destabilisation of the medial meniscus. Contributions of fluorescently labelled cells to osteophytes after 2 or 8 weeks, and their molecular identity, were analysed by histology, immunofluorescence staining and RNA in situ hybridisation. Pdgfrα-H2BGFP mice and Pdgfrα-CreER mice crossed with multicolour Confetti reporter mice were used for identification and clonal tracing of mesenchymal progenitors. Mice carrying Col2-CreER, Nes-CreER, LepR-Cre, Grem1-CreER, Gdf5-Cre, Sox9-CreER or Prg4-CreER were crossed with tdTomato reporter mice to lineage-trace chondrocytes and stem/progenitor cell subpopulations. RESULTS Articular chondrocytes, or skeletal stem cells identified by Nes, LepR or Grem1 expression, did not give rise to osteophytes. Instead, osteophytes derived from Pdgfrα-expressing stem/progenitor cells in periosteum and synovium that are descendants from the Gdf5-expressing embryonic joint interzone. Further, we show that Sox9-expressing progenitors in periosteum supplied hybrid skeletal cells to the early osteophyte, while Prg4-expressing progenitors from synovial lining contributed to cartilage capping the osteophyte, but not to bone. CONCLUSION Our findings reveal distinct periosteal and synovial skeletal progenitors that cooperate to form osteophytes in OA. These cell populations could be targeted in disease modification for treatment of OA.
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Affiliation(s)
- Anke J Roelofs
- Arthritis and Regenerative Medicine Laboratory, Aberdeen Centre for Arthritis and Musculoskeletal Health, Institute of Medical Sciences, University of Aberdeen, Aberdeen, UK
| | - Karolina Kania
- Arthritis and Regenerative Medicine Laboratory, Aberdeen Centre for Arthritis and Musculoskeletal Health, Institute of Medical Sciences, University of Aberdeen, Aberdeen, UK
| | - Alexandra J Rafipay
- Arthritis and Regenerative Medicine Laboratory, Aberdeen Centre for Arthritis and Musculoskeletal Health, Institute of Medical Sciences, University of Aberdeen, Aberdeen, UK
| | - Meike Sambale
- Institute of Musculoskeletal Medicine, University Hospital Munster, Munster, Germany
| | - Stephanie T Kuwahara
- Eli and Edythe Broad CIRM Center for Regenerative Medicine and Stem Cell Research, Department of Stem Cell Biology and Regenerative Medicine, University of Southern California Keck School of Medicine, Los Angeles, California, USA
| | - Fraser L Collins
- Arthritis and Regenerative Medicine Laboratory, Aberdeen Centre for Arthritis and Musculoskeletal Health, Institute of Medical Sciences, University of Aberdeen, Aberdeen, UK
| | - Joanna Smeeton
- Eli and Edythe Broad CIRM Center for Regenerative Medicine and Stem Cell Research, Department of Stem Cell Biology and Regenerative Medicine, University of Southern California Keck School of Medicine, Los Angeles, California, USA
- Department of Rehabilitation and Regenerative Medicine, Columbia University Irving Medical Center, New York, New York, USA
| | - Maxwell A Serowoky
- Eli and Edythe Broad CIRM Center for Regenerative Medicine and Stem Cell Research, Department of Stem Cell Biology and Regenerative Medicine, University of Southern California Keck School of Medicine, Los Angeles, California, USA
| | - Lynn Rowley
- Murdoch Children's Research Institute, Parkville, Victoria, Australia
| | - Hui Wang
- Arthritis and Regenerative Medicine Laboratory, Aberdeen Centre for Arthritis and Musculoskeletal Health, Institute of Medical Sciences, University of Aberdeen, Aberdeen, UK
| | - René Gronewold
- Institute of Musculoskeletal Medicine, University Hospital Munster, Munster, Germany
| | - Chrysa Kapeni
- Wellcome Trust-Medical Research Council Cambridge Stem Cell Institute and Department of Haematology, University of Cambridge, Cambridge, UK
| | - Simón Méndez-Ferrer
- Wellcome Trust-Medical Research Council Cambridge Stem Cell Institute and Department of Haematology, University of Cambridge, Cambridge, UK
| | - Christopher B Little
- Raymond Purves Bone and Joint Laboratories, Kolling Institute of Medical Research, The University of Sydney, St Leonards, New South Wales, Australia
| | - John F Bateman
- Murdoch Children's Research Institute, Parkville, Victoria, Australia
- Department of Paediatrics, University of Melbourne, Melbourne, Victoria, Australia
| | - Thomas Pap
- Institute of Musculoskeletal Medicine, University Hospital Munster, Munster, Germany
| | - Francesca V Mariani
- Eli and Edythe Broad CIRM Center for Regenerative Medicine and Stem Cell Research, Department of Stem Cell Biology and Regenerative Medicine, University of Southern California Keck School of Medicine, Los Angeles, California, USA
| | - Joanna Sherwood
- Institute of Musculoskeletal Medicine, University Hospital Munster, Munster, Germany
| | - J Gage Crump
- Eli and Edythe Broad CIRM Center for Regenerative Medicine and Stem Cell Research, Department of Stem Cell Biology and Regenerative Medicine, University of Southern California Keck School of Medicine, Los Angeles, California, USA
| | - Cosimo De Bari
- Arthritis and Regenerative Medicine Laboratory, Aberdeen Centre for Arthritis and Musculoskeletal Health, Institute of Medical Sciences, University of Aberdeen, Aberdeen, UK
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Fitch SR, Kapeni C, Tsitsopoulou A, Wilson NK, Göttgens B, de Bruijn MF, Ottersbach K. Gata3 targets Runx1 in the embryonic haematopoietic stem cell niche. IUBMB Life 2020; 72:45-52. [PMID: 31634421 PMCID: PMC6973286 DOI: 10.1002/iub.2184] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2019] [Accepted: 10/01/2019] [Indexed: 02/02/2023]
Abstract
Runx1 is an important haematopoietic transcription factor as stressed by its involvement in a number of haematological malignancies. Furthermore, it is a key regulator of the emergence of the first haematopoietic stem cells (HSCs) during development. The transcription factor Gata3 has also been linked to haematological disease and was shown to promote HSC production in the embryo by inducing the secretion of important niche factors. Both proteins are expressed in several different cell types within the aorta-gonads-mesonephros (AGM) region, in which the first HSCs are generated; however, a direct interaction between these two key transcription factors in the context of embryonic HSC production has not formally been demonstrated. In this current study, we have detected co-localisation of Runx1 and Gata3 in rare sub-aortic mesenchymal cells in the AGM. Furthermore, the expression of Runx1 is reduced in Gata3 -/- embryos, which also display a shift in HSC emergence. Using an AGM-derived cell line as a model for the stromal microenvironment in the AGM and performing ChIP-Seq and ChIP-on-chip experiments, we demonstrate that Runx1, together with other key niche factors, is a direct target gene of Gata3. In addition, we can pinpoint Gata3 binding to the Runx1 locus at specific enhancer elements which are active in the microenvironment. These results reveal a direct interaction between Gata3 and Runx1 in the niche that supports embryonic HSCs and highlight a dual role for Runx1 in driving the transdifferentiation of haemogenic endothelial cells into HSCs as well as in the stromal cells that support this process.
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Affiliation(s)
- Simon R. Fitch
- Cambridge Institute for Medical Research and Cambridge Stem Cell InstituteUniversity of CambridgeCambridgeUK
| | - Chrysa Kapeni
- MRC Centre for Regenerative MedicineUniversity of EdinburghEdinburghUK
- Cambridge Institute for Medical Research and Cambridge Stem Cell InstituteUniversity of CambridgeCambridgeUK
| | | | - Nicola K. Wilson
- Cambridge Institute for Medical Research and Cambridge Stem Cell InstituteUniversity of CambridgeCambridgeUK
| | - Berthold Göttgens
- Cambridge Institute for Medical Research and Cambridge Stem Cell InstituteUniversity of CambridgeCambridgeUK
| | - Marella F. de Bruijn
- MRC Molecular Haematology Unit, MRC Weatherall Institute of Molecular MedicineUniversity of OxfordOxfordUK
| | - Katrin Ottersbach
- MRC Centre for Regenerative MedicineUniversity of EdinburghEdinburghUK
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Mansell E, Zareian N, Malouf C, Kapeni C, Brown N, Badie C, Baird D, Lane J, Ottersbach K, Blair A, Case CP. DNA damage signalling from the placenta to foetal blood as a potential mechanism for childhood leukaemia initiation. Sci Rep 2019; 9:4370. [PMID: 30867444 PMCID: PMC6416312 DOI: 10.1038/s41598-019-39552-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2018] [Accepted: 11/05/2018] [Indexed: 01/08/2023] Open
Abstract
For many diseases with a foetal origin, the cause for the disease initiation remains unknown. Common childhood acute leukaemia is thought to be caused by two hits, the first in utero and the second in childhood in response to infection. The mechanism for the initial DNA damaging event are unknown. Here we have used in vitro, ex vivo and in vivo models to show that a placental barrier will respond to agents that are suspected of initiating childhood leukaemia by releasing factors that cause DNA damage in cord blood and bone marrow cells, including stem cells. We show that DNA damage caused by in utero exposure can reappear postnatally after an immune challenge. Furthermore, both foetal and postnatal DNA damage are prevented by prenatal exposure of the placenta to a mitochondrially-targeted antioxidant. We conclude that the placenta might contribute to the first hit towards leukaemia initiation by bystander-like signalling to foetal haematopoietic cells.
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Affiliation(s)
- Els Mansell
- School of Clinical Science, University of Bristol, Learning and Research Centre, Southmead Hospital, Bristol, UK.
| | - Nahid Zareian
- School of Clinical Science, University of Bristol, Learning and Research Centre, Southmead Hospital, Bristol, UK
| | - Camille Malouf
- MRC Centre for Regenerative Medicine, SCRM Building, The University of Edinburgh, Edinburgh Bioquarter 5 Little France Drive, Edinburgh, UK
| | - Chrysa Kapeni
- MRC Centre for Regenerative Medicine, SCRM Building, The University of Edinburgh, Edinburgh Bioquarter 5 Little France Drive, Edinburgh, UK
| | - Natalie Brown
- Cancer Mecanisms and Biomarkers, Department of Radiation Effects, Public Health England's Centre for Radiation, Chemical and Environmental Hazards (CRCE), Chilton, Didcot, Oxon, UK
| | - Christophe Badie
- Cancer Mecanisms and Biomarkers, Department of Radiation Effects, Public Health England's Centre for Radiation, Chemical and Environmental Hazards (CRCE), Chilton, Didcot, Oxon, UK
| | - Duncan Baird
- Division of Cancer & Genetics, School of Medicine, Cardiff University, Cardiff, UK
| | - Jon Lane
- School of Biochemistry, University of Bristol, Bristol, UK
| | - Katrin Ottersbach
- MRC Centre for Regenerative Medicine, SCRM Building, The University of Edinburgh, Edinburgh Bioquarter 5 Little France Drive, Edinburgh, UK
| | - Allison Blair
- School of Cellular and Molecular Medicine, University of Bristol, Bristol, UK
- Bristol Institute for Transfusion Sciences, NHS Blood and Transplant, Filton, UK
| | - C Patrick Case
- School of Clinical Science, University of Bristol, Learning and Research Centre, Southmead Hospital, Bristol, UK
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8
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Malouf C, Sahm F, Kapeni C, Ottersbach K. miR-128a, miR-130b and miR-155 are co-drivers of T(4;11) Mll-AF4 acute lymphoblastic leukaemia. Exp Hematol 2017. [DOI: 10.1016/j.exphem.2017.06.175] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Malouf C, Kapeni C, Ottersbach K. MLL-AF4 perturbs the self-renewal and differentiation potential of HSC during the definitive wave of haematopoiesis: A stage-specific pattern. Exp Hematol 2015. [DOI: 10.1016/j.exphem.2015.06.184] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Kapeni C, Ottersbach K. The role of CDKN1C/P57KIP2 in developmental haematopoiesis. Exp Hematol 2015. [DOI: 10.1016/j.exphem.2015.06.156] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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