1
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Mao A, Li Z, Ning G, Zhou Z, Wei C, Li J, He X, Wang Q. Sclerotome-derived PDGF signaling functions as a niche cue responsible for primitive erythropoiesis. Development 2023; 150:dev201807. [PMID: 37882745 PMCID: PMC10690055 DOI: 10.1242/dev.201807] [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: 03/23/2023] [Accepted: 10/19/2023] [Indexed: 10/27/2023]
Abstract
Primitive erythropoiesis serves a vital role in embryonic development, generating primitive red blood cells responsible for transportation of oxygen throughout the body. Although diverse niche factors are known to function in definitive hematopoiesis, the microenvironment contributing to primitive hematopoiesis remains largely elusive. Here, we report that platelet-derived growth factor (PDGF) signaling is required for erythroid progenitor differentiation in zebrafish. Ablating pdgfαa (also known as pdgfaa) and pdgfαb (also known as pdgfab) or blocking PDGF signaling with an inhibitor impairs erythroid progenitor differentiation, thus resulting in a significant decrease in the number of erythrocytes. We reveal that pdgfαb is expressed in sclerotomal cells, and that its receptor genes, pdgfra and pdgfrb, are expressed in the adjacent erythroid progenitor cells. Sclerotome-specific overexpression of pdgfαb effectively restores primitive erythropoiesis in pdgfαa-/-;pdgfαb-/- mutant embryos. In addition, we have defined ERK1/2 signaling as a downstream pathway of PDGF signaling during embryonic erythropoiesis. Taken together, our findings indicate that PDGF signaling derived from sclerotome functions as a niche cue for primitive erythropoiesis.
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Affiliation(s)
- Aihua Mao
- Guangdong Provincial Key Laboratory of Marine Biotechnology, Institute of Marine Sciences, Shantou University, Shantou, Guangdong 515063, China
| | - Zhuyun Li
- Innovation Centre of Ministry of Education for Development and Diseases, Sixth Affiliated Hospital, School of Medicine, South China University of Technology, Guangzhou 510006, China
- School of Life Sciences, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Guozhu Ning
- Affiliated Hospital of Guangdong Medical University and Key Laboratory of Zebrafish Model for Development and Disease, Guangdong Medical University, Zhanjiang 524001, China
| | - Zhengrong Zhou
- State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China
| | - Chiju Wei
- Guangdong Provincial Key Laboratory of Marine Biotechnology, Institute of Marine Sciences, Shantou University, Shantou, Guangdong 515063, China
| | - Jianchao Li
- Innovation Centre of Ministry of Education for Development and Diseases, Sixth Affiliated Hospital, School of Medicine, South China University of Technology, Guangzhou 510006, China
| | - Xinyu He
- Innovation Centre of Ministry of Education for Development and Diseases, Sixth Affiliated Hospital, School of Medicine, South China University of Technology, Guangzhou 510006, China
| | - Qiang Wang
- Innovation Centre of Ministry of Education for Development and Diseases, Sixth Affiliated Hospital, School of Medicine, South China University of Technology, Guangzhou 510006, China
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2
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Grimm L, Mason E, Yu H, Dudczig S, Panara V, Chen T, Bower NI, Paterson S, Rondon Galeano M, Kobayashi S, Senabouth A, Lagendijk AK, Powell J, Smith KA, Okuda KS, Koltowska K, Hogan BM. Single-cell analysis of lymphatic endothelial cell fate specification and differentiation during zebrafish development. EMBO J 2023:e112590. [PMID: 36912146 DOI: 10.15252/embj.2022112590] [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: 09/13/2022] [Revised: 01/24/2023] [Accepted: 02/03/2023] [Indexed: 03/14/2023] Open
Abstract
During development, the lymphatic vasculature forms as a second network derived chiefly from blood vessels. The transdifferentiation of embryonic venous endothelial cells (VECs) into lymphatic endothelial cells (LECs) is a key step in this process. Specification, differentiation and maintenance of LEC fate are all driven by the transcription factor Prox1, yet the downstream mechanisms remain to be elucidated. We here present a single-cell transcriptomic atlas of lymphangiogenesis in zebrafish, revealing new markers and hallmarks of LEC differentiation over four developmental stages. We further profile single-cell transcriptomic and chromatin accessibility changes in zygotic prox1a mutants that are undergoing a LEC-VEC fate shift. Using maternal and zygotic prox1a/prox1b mutants, we determine the earliest transcriptomic changes directed by Prox1 during LEC specification. This work altogether reveals new downstream targets and regulatory regions of the genome controlled by Prox1 and presents evidence that Prox1 specifies LEC fate primarily by limiting blood vascular and haematopoietic fate. This extensive single-cell resource provides new mechanistic insights into the enigmatic role of Prox1 and the control of LEC differentiation in development.
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Affiliation(s)
- Lin Grimm
- Organogenesis and Cancer Program, Peter MacCallum Cancer Centre, Melbourne, VIC, Australia.,Sir Peter MacCallum Department of Oncology, University of Melbourne, Melbourne, VIC, Australia.,Division of Genomics of Development and Disease, Institute for Molecular Bioscience, The University of Queensland, St Lucia, Brisbane, QLD, Australia
| | - Elizabeth Mason
- Organogenesis and Cancer Program, Peter MacCallum Cancer Centre, Melbourne, VIC, Australia.,Sir Peter MacCallum Department of Oncology, University of Melbourne, Melbourne, VIC, Australia
| | - Hujun Yu
- Organogenesis and Cancer Program, Peter MacCallum Cancer Centre, Melbourne, VIC, Australia.,Sir Peter MacCallum Department of Oncology, University of Melbourne, Melbourne, VIC, Australia
| | - Stefanie Dudczig
- Organogenesis and Cancer Program, Peter MacCallum Cancer Centre, Melbourne, VIC, Australia.,Sir Peter MacCallum Department of Oncology, University of Melbourne, Melbourne, VIC, Australia
| | - Virginia Panara
- Department of Immunology, Genetics and Pathology, Uppsala University, Uppsala, Sweden
| | - Tyrone Chen
- Organogenesis and Cancer Program, Peter MacCallum Cancer Centre, Melbourne, VIC, Australia.,Sir Peter MacCallum Department of Oncology, University of Melbourne, Melbourne, VIC, Australia
| | - Neil I Bower
- Division of Genomics of Development and Disease, Institute for Molecular Bioscience, The University of Queensland, St Lucia, Brisbane, QLD, Australia
| | - Scott Paterson
- Organogenesis and Cancer Program, Peter MacCallum Cancer Centre, Melbourne, VIC, Australia.,Sir Peter MacCallum Department of Oncology, University of Melbourne, Melbourne, VIC, Australia.,Division of Genomics of Development and Disease, Institute for Molecular Bioscience, The University of Queensland, St Lucia, Brisbane, QLD, Australia
| | - Maria Rondon Galeano
- Organogenesis and Cancer Program, Peter MacCallum Cancer Centre, Melbourne, VIC, Australia.,Sir Peter MacCallum Department of Oncology, University of Melbourne, Melbourne, VIC, Australia
| | - Sakurako Kobayashi
- Organogenesis and Cancer Program, Peter MacCallum Cancer Centre, Melbourne, VIC, Australia.,Sir Peter MacCallum Department of Oncology, University of Melbourne, Melbourne, VIC, Australia
| | - Anne Senabouth
- Division of Genomics of Development and Disease, Institute for Molecular Bioscience, The University of Queensland, St Lucia, Brisbane, QLD, Australia.,Garvan Institute of Medical Research, Sydney, NSW, Australia
| | - Anne K Lagendijk
- Division of Genomics of Development and Disease, Institute for Molecular Bioscience, The University of Queensland, St Lucia, Brisbane, QLD, Australia
| | - Joseph Powell
- Division of Genomics of Development and Disease, Institute for Molecular Bioscience, The University of Queensland, St Lucia, Brisbane, QLD, Australia.,Garvan Institute of Medical Research, Sydney, NSW, Australia.,School of Medical Sciences, University of New South Wales, Kensington, Sydney, NSW, Australia.,Garvan-Weizmann Centre for Cellular Genomics, Garvan Institute of Medical Research, Sydney, NSW, Australia
| | - Kelly A Smith
- Department of Anatomy and Physiology, University of Melbourne, Melbourne, VIC, Australia
| | - Kazuhide S Okuda
- Organogenesis and Cancer Program, Peter MacCallum Cancer Centre, Melbourne, VIC, Australia.,Sir Peter MacCallum Department of Oncology, University of Melbourne, Melbourne, VIC, Australia
| | - Katarzyna Koltowska
- Department of Immunology, Genetics and Pathology, Uppsala University, Uppsala, Sweden
| | - Benjamin M Hogan
- Organogenesis and Cancer Program, Peter MacCallum Cancer Centre, Melbourne, VIC, Australia.,Sir Peter MacCallum Department of Oncology, University of Melbourne, Melbourne, VIC, Australia.,Division of Genomics of Development and Disease, Institute for Molecular Bioscience, The University of Queensland, St Lucia, Brisbane, QLD, Australia.,Department of Anatomy and Physiology, University of Melbourne, Melbourne, VIC, Australia
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3
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Structural Insights Uncover the Specific Phosphoinositide Recognition by the PH1 Domain of Arap3. Int J Mol Sci 2023; 24:ijms24021125. [PMID: 36674645 PMCID: PMC9865853 DOI: 10.3390/ijms24021125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Revised: 12/28/2022] [Accepted: 01/04/2023] [Indexed: 01/11/2023] Open
Abstract
Arap3, a dual GTPase-activating protein (GAP) for the small GTPases Arf6 and RhoA, plays key roles in regulating a wide range of biological processes, including cancer cell invasion and metastasis. It is known that Arap3 is a PI3K effector that can bind directly to PI(3,4,5)P3, and the PI(3,4,5)P3-mediated plasma membrane recruitment is crucial for its function. However, the molecular mechanism of how the protein recognizes PI(3,4,5)P3 remains unclear. Here, using liposome pull-down and surface plasmon resonance (SPR) analysis, we found that the N-terminal first pleckstrin homology (PH) domain (Arap3-PH1) can interact with PI(3,4,5)P3 and, with lower affinity, with PI(4,5)P2. To understand how Arap3-PH1 and phosphoinositide (PIP) lipids interact, we solved the crystal structure of the Arap3-PH1 in the apo form and complex with diC4-PI(3,4,5)P3. We also characterized the interactions of Arap3-PH1 with diC4-PI(3,4,5)P3 and diC4-PI(4,5)P2 in solution by nuclear magnetic resonance (NMR) spectroscopy. Furthermore, we found overexpression of Arap3 could inhibit breast cancer cell invasion in vitro, and the PIPs-binding ability of the PH1 domain is essential for this function.
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4
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Bonetti G, Paolacci S, Samaja M, Maltese PE, Michelini S, Michelini S, Michelini S, Ricci M, Cestari M, Dautaj A, Medori MC, Bertelli M. Low Efficacy of Genetic Tests for the Diagnosis of Primary Lymphedema Prompts Novel Insights into the Underlying Molecular Pathways. Int J Mol Sci 2022; 23:ijms23137414. [PMID: 35806420 PMCID: PMC9267137 DOI: 10.3390/ijms23137414] [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: 05/09/2022] [Revised: 06/16/2022] [Accepted: 06/29/2022] [Indexed: 02/07/2023] Open
Abstract
Lymphedema is a chronic inflammatory disorder caused by ineffective fluid uptake by the lymphatic system, with effects mainly on the lower limbs. Lymphedema is either primary, when caused by genetic mutations, or secondary, when it follows injury, infection, or surgery. In this study, we aim to assess to what extent the current genetic tests detect genetic variants of lymphedema, and to identify the major molecular pathways that underlie this rather unknown disease. We recruited 147 individuals with a clinical diagnosis of primary lymphedema and used established genetic tests on their blood or saliva specimens. Only 11 of these were positive, while other probands were either negative (63) or inconclusive (73). The low efficacy of such tests calls for greater insight into the underlying mechanisms to increase accuracy. For this purpose, we built a molecular pathways diagram based on a literature analysis (OMIM, Kegg, PubMed, Scopus) of candidate and diagnostic genes. The PI3K/AKT and the RAS/MAPK pathways emerged as primary candidates responsible for lymphedema diagnosis, while the Rho/ROCK pathway appeared less critical. The results of this study suggest the most important pathways involved in the pathogenesis of lymphedema, and outline the most promising diagnostic and candidate genes to diagnose this disease.
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Affiliation(s)
- Gabriele Bonetti
- MAGI’s LAB, 38068 Rovereto, Italy; (S.P.); (P.E.M.); (A.D.); (M.C.M.); (M.B.)
- Correspondence: ; Tel.: +39-0365-62-061
| | - Stefano Paolacci
- MAGI’s LAB, 38068 Rovereto, Italy; (S.P.); (P.E.M.); (A.D.); (M.C.M.); (M.B.)
| | | | | | - Sandro Michelini
- Vascular Diagnostics and Rehabilitation Service, Marino Hospital, ASL Roma 6, 00047 Marino, Italy;
| | - Serena Michelini
- Unit of Physical Medicine, “Sapienza” University of Rome, 00185 Rome, Italy;
| | | | - Maurizio Ricci
- Division of Rehabilitation Medicine, Azienda Ospedaliero-Universitaria, Ospedali Riuniti di Ancona, 60126 Ancona, Italy;
| | - Marina Cestari
- Study Centre Pianeta Linfedema, 05100 Terni, Italy;
- Lymphology Sector of the Rehabilitation Service, USLUmbria2, 05100 Terni, Italy
| | - Astrit Dautaj
- MAGI’s LAB, 38068 Rovereto, Italy; (S.P.); (P.E.M.); (A.D.); (M.C.M.); (M.B.)
| | - Maria Chiara Medori
- MAGI’s LAB, 38068 Rovereto, Italy; (S.P.); (P.E.M.); (A.D.); (M.C.M.); (M.B.)
| | - Matteo Bertelli
- MAGI’s LAB, 38068 Rovereto, Italy; (S.P.); (P.E.M.); (A.D.); (M.C.M.); (M.B.)
- MAGI Group, 25010 San Felice del Benaco, Italy;
- MAGI Euregio, 39100 Bolzano, Italy
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5
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mafba and mafbb differentially regulate lymphatic endothelial cell migration in topographically distinct manners. Cell Rep 2022; 39:110982. [PMID: 35732122 DOI: 10.1016/j.celrep.2022.110982] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Revised: 04/11/2022] [Accepted: 05/27/2022] [Indexed: 11/24/2022] Open
Abstract
Lymphangiogenesis, formation of lymphatic vessels from pre-existing vessels, is a dynamic process that requires cell migration. Regardless of location, migrating lymphatic endothelial cell (LEC) progenitors probe their surroundings to form the lymphatic network. Lymphatic-development regulation requires the transcription factor MAFB in different species. Zebrafish Mafba, expressed in LEC progenitors, is essential for their migration in the trunk. However, the transcriptional mechanism that orchestrates LEC migration in different lymphatic endothelial beds remains elusive. Here, we uncover topographically different requirements of the two paralogs, Mafba and Mafbb, for LEC migration. Both mafba and mafbb are necessary for facial lymphatic development, but mafbb is dispensable for trunk lymphatic development. On the molecular level, we demonstrate a regulatory network where Vegfc-Vegfd-SoxF-Mafba-Mafbb is essential in facial lymphangiogenesis. We identify that mafba and mafbb tune the directionality of LEC migration and vessel morphogenesis that is ultimately necessary for lymphatic function.
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6
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Peng D, Ando K, Hußmann M, Gloger M, Skoczylas R, Mochizuki N, Betsholtz C, Fukuhara S, Schulte-Merker S, Lawson ND, Koltowska K. Proper migration of lymphatic endothelial cells requires survival and guidance cues from arterial mural cells. eLife 2022; 11:e74094. [PMID: 35316177 PMCID: PMC9042226 DOI: 10.7554/elife.74094] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Accepted: 03/21/2022] [Indexed: 11/13/2022] Open
Abstract
The migration of lymphatic endothelial cells (LECs) is key for the development of the complex and vast lymphatic vascular network that pervades most tissues in an organism. In zebrafish, arterial intersegmental vessels together with chemokines have been shown to promote lymphatic cell migration from the horizontal myoseptum (HM). We observed that emergence of mural cells around the intersegmental arteries coincides with lymphatic departure from HM which raised the possibility that arterial mural cells promote LEC migration. Our live imaging and cell ablation experiments revealed that LECs migrate slower and fail to establish the lymphatic vascular network in the absence of arterial mural cells. We determined that mural cells are a source for the C-X-C motif chemokine 12 (Cxcl12a and Cxcl12b), vascular endothelial growth factor C (Vegfc) and collagen and calcium-binding EGF domain-containing protein 1 (Ccbe1). We showed that chemokine and growth factor signalling function cooperatively to induce robust LEC migration. Specifically, Vegfc-Vegfr3 signalling, but not chemokines, induces extracellular signal-regulated kinase (ERK) activation in LECs, and has an additional pro-survival role in LECs during the migration. Together, the identification of mural cells as a source for signals that guide LEC migration and survival will be important in the future design for rebuilding lymphatic vessels in disease contexts.
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Affiliation(s)
- Di Peng
- Uppsala University, Immunology Genetics and PathologyUppsalaSweden
| | - Koji Ando
- Department of Molecular Pathophysiology, Institute of Advanced Medical Sciences, Nippon Medical SchoolTokyoJapan
| | - Melina Hußmann
- Institute of Cardiovascular Organogenesis and Regeneration, Faculty of Medicine, WWU MünsterMünsterGermany
| | - Marleen Gloger
- Uppsala University, Immunology Genetics and PathologyUppsalaSweden
| | - Renae Skoczylas
- Uppsala University, Immunology Genetics and PathologyUppsalaSweden
| | - Naoki Mochizuki
- Department of Cell Biology, National Cerebral and Cardiovascular Center Research InstituteSuitaJapan
| | - Christer Betsholtz
- Department of Immunology, Genetics and Pathology, Rudbeck Laboratory, Uppsala UniversityUppsalaSweden
- Department of Medicine Huddinge (MedH), Karolinska Institutet, Campus FlemingsbergHuddingeSweden
| | - Shigetomo Fukuhara
- Department of Molecular Pathophysiology, Institute of Advanced Medical Sciences, Nippon Medical SchoolTokyoJapan
| | - Stefan Schulte-Merker
- Institute of Cardiovascular Organogenesis and Regeneration, Faculty of Medicine, WWU MünsterMünsterGermany
| | - Nathan D Lawson
- Department of Molecular, Cellular, and Cancer Biology, University of Massachusetts Medical SchoolWorcesterUnited States
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7
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Koltowska K, Okuda KS, Gloger M, Rondon-Galeano M, Mason E, Xuan J, Dudczig S, Chen H, Arnold H, Skoczylas R, Bower NI, Paterson S, Lagendijk AK, Baillie GJ, Leshchiner I, Simons C, Smith KA, Goessling W, Heath JK, Pearson RB, Sanij E, Schulte-Merker S, Hogan BM. The RNA helicase Ddx21 controls Vegfc-driven developmental lymphangiogenesis by balancing endothelial cell ribosome biogenesis and p53 function. Nat Cell Biol 2021; 23:1136-1147. [PMID: 34750583 DOI: 10.1038/s41556-021-00784-w] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Accepted: 09/27/2021] [Indexed: 12/13/2022]
Abstract
The development of a functional vasculature requires the coordinated control of cell fate, lineage differentiation and network growth. Cellular proliferation is spatiotemporally regulated in developing vessels, but how this is orchestrated in different lineages is unknown. Here, using a zebrafish genetic screen for lymphatic-deficient mutants, we uncover a mutant for the RNA helicase Ddx21. Ddx21 cell-autonomously regulates lymphatic vessel development. An established regulator of ribosomal RNA synthesis and ribosome biogenesis, Ddx21 is enriched in sprouting venous endothelial cells in response to Vegfc-Flt4 signalling. Ddx21 function is essential for Vegfc-Flt4-driven endothelial cell proliferation. In the absence of Ddx21, endothelial cells show reduced ribosome biogenesis, p53 and p21 upregulation and cell cycle arrest that blocks lymphangiogenesis. Thus, Ddx21 coordinates the lymphatic endothelial cell response to Vegfc-Flt4 signalling by balancing ribosome biogenesis and p53 function. This mechanism may be targetable in diseases of excessive lymphangiogenesis such as cancer metastasis or lymphatic malformation.
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Affiliation(s)
- Katarzyna Koltowska
- Division of Genomics of Development and Disease, Institute for Molecular Bioscience, The University of Queensland, St Lucia, Brisbane, Queensland, Australia. .,Department of Immunology, Genetics and Pathology, Uppsala University, Uppsala, Sweden.
| | - Kazuhide S Okuda
- Division of Genomics of Development and Disease, Institute for Molecular Bioscience, The University of Queensland, St Lucia, Brisbane, Queensland, Australia.,Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia.,Sir Peter MacCallum Department of Oncology, University of Melbourne, Melbourne, Victoria, Australia
| | - Marleen Gloger
- Department of Immunology, Genetics and Pathology, Uppsala University, Uppsala, Sweden
| | - Maria Rondon-Galeano
- Division of Genomics of Development and Disease, Institute for Molecular Bioscience, The University of Queensland, St Lucia, Brisbane, Queensland, Australia.,Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia.,Sir Peter MacCallum Department of Oncology, University of Melbourne, Melbourne, Victoria, Australia
| | - Elizabeth Mason
- Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia.,Sir Peter MacCallum Department of Oncology, University of Melbourne, Melbourne, Victoria, Australia
| | - Jiachen Xuan
- Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia.,Sir Peter MacCallum Department of Oncology, University of Melbourne, Melbourne, Victoria, Australia
| | - Stefanie Dudczig
- Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia.,Sir Peter MacCallum Department of Oncology, University of Melbourne, Melbourne, Victoria, Australia
| | - Huijun Chen
- Division of Genomics of Development and Disease, Institute for Molecular Bioscience, The University of Queensland, St Lucia, Brisbane, Queensland, Australia
| | - Hannah Arnold
- Department of Immunology, Genetics and Pathology, Uppsala University, Uppsala, Sweden
| | - Renae Skoczylas
- Department of Immunology, Genetics and Pathology, Uppsala University, Uppsala, Sweden
| | - Neil I Bower
- Division of Genomics of Development and Disease, Institute for Molecular Bioscience, The University of Queensland, St Lucia, Brisbane, Queensland, Australia
| | - Scott Paterson
- Division of Genomics of Development and Disease, Institute for Molecular Bioscience, The University of Queensland, St Lucia, Brisbane, Queensland, Australia.,Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia.,Sir Peter MacCallum Department of Oncology, University of Melbourne, Melbourne, Victoria, Australia
| | - Anne Karine Lagendijk
- Division of Genomics of Development and Disease, Institute for Molecular Bioscience, The University of Queensland, St Lucia, Brisbane, Queensland, Australia
| | - Gregory J Baillie
- Division of Genomics of Development and Disease, Institute for Molecular Bioscience, The University of Queensland, St Lucia, Brisbane, Queensland, Australia
| | - Ignaty Leshchiner
- Massachusetts General Hospital, Harvard-MIT Division of Health Sciences and Technology, Harvard Medical School, Boston, MA, USA.,Broad Institute of MIT and Harvard, Cambridge, MA, USA
| | - Cas Simons
- Division of Genomics of Development and Disease, Institute for Molecular Bioscience, The University of Queensland, St Lucia, Brisbane, Queensland, Australia.,Murdoch Children's Research Institute, Royal Children's Hospital, Parkville, Victoria, Australia
| | - Kelly A Smith
- Division of Genomics of Development and Disease, Institute for Molecular Bioscience, The University of Queensland, St Lucia, Brisbane, Queensland, Australia.,Department of Anatomy and Physiology, University of Melbourne, Parkville, Victoria, Australia
| | - Wolfram Goessling
- Massachusetts General Hospital, Harvard-MIT Division of Health Sciences and Technology, Harvard Medical School, Boston, MA, USA
| | - Joan K Heath
- Epigenetics and Development Division, The Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria, Australia.,Department of Medical Biology, University of Melbourne, Parkville, Victoria, Australia
| | - Richard B Pearson
- Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia.,Sir Peter MacCallum Department of Oncology, University of Melbourne, Melbourne, Victoria, Australia.,Department of Biochemistry and Molecular Biology, University of Melbourne, Parkville, Victoria, Australia.,Department of Biochemistry and Molecular Biology, Monash University, Clayton, Victoria, Australia
| | - Elaine Sanij
- Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia.,Sir Peter MacCallum Department of Oncology, University of Melbourne, Melbourne, Victoria, Australia.,Department of Clinical Pathology, University of Melbourne, Parkville, Victoria, Australia.,St Vincent's Institute of Medical Research, Fitzroy, Victoria, Australia
| | - Stefan Schulte-Merker
- Institute of Cardiovascular Organogenesis and Regeneration, Medical Faculty, WWU Münster, Münster, Germany.,Hubrecht Institute-KNAW and University Medical Centre, Utrecht, The Netherlands
| | - Benjamin M Hogan
- Division of Genomics of Development and Disease, Institute for Molecular Bioscience, The University of Queensland, St Lucia, Brisbane, Queensland, Australia. .,Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia. .,Sir Peter MacCallum Department of Oncology, University of Melbourne, Melbourne, Victoria, Australia. .,Department of Anatomy and Physiology, University of Melbourne, Parkville, Victoria, Australia. .,Hubrecht Institute-KNAW and University Medical Centre, Utrecht, The Netherlands.
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8
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Betterman KL, Sutton DL, Secker GA, Kazenwadel J, Oszmiana A, Lim L, Miura N, Sorokin L, Hogan BM, Kahn ML, McNeill H, Harvey NL. Atypical cadherin FAT4 orchestrates lymphatic endothelial cell polarity in response to flow. J Clin Invest 2021; 130:3315-3328. [PMID: 32182215 DOI: 10.1172/jci99027] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2017] [Accepted: 03/05/2020] [Indexed: 01/07/2023] Open
Abstract
The atypical cadherin FAT4 has established roles in the regulation of planar cell polarity and Hippo pathway signaling that are cell context dependent. The recent identification of FAT4 mutations in Hennekam syndrome, features of which include lymphedema, lymphangiectasia, and mental retardation, uncovered an important role for FAT4 in the lymphatic vasculature. Hennekam syndrome is also caused by mutations in collagen and calcium binding EGF domains 1 (CCBE1) and ADAM metallopeptidase with thrombospondin type 1 motif 3 (ADAMTS3), encoding a matrix protein and protease, respectively, that regulate activity of the key prolymphangiogenic VEGF-C/VEGFR3 signaling axis by facilitating the proteolytic cleavage and activation of VEGF-C. The fact that FAT4, CCBE1, and ADAMTS3 mutations underlie Hennekam syndrome suggested that all 3 genes might function in a common pathway. We identified FAT4 as a target gene of GATA-binding protein 2 (GATA2), a key transcriptional regulator of lymphatic vascular development and, in particular, lymphatic vessel valve development. Here, we demonstrate that FAT4 functions in a lymphatic endothelial cell-autonomous manner to control cell polarity in response to flow and is required for lymphatic vessel morphogenesis throughout development. Our data reveal a crucial role for FAT4 in lymphangiogenesis and shed light on the mechanistic basis by which FAT4 mutations underlie a human lymphedema syndrome.
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Affiliation(s)
- Kelly L Betterman
- Centre for Cancer Biology, University of South Australia and SA Pathology, Adelaide, South Australia, Australia.,SA Pathology, Adelaide, South Australia, Australia
| | - Drew L Sutton
- Centre for Cancer Biology, University of South Australia and SA Pathology, Adelaide, South Australia, Australia.,SA Pathology, Adelaide, South Australia, Australia
| | - Genevieve A Secker
- Centre for Cancer Biology, University of South Australia and SA Pathology, Adelaide, South Australia, Australia.,SA Pathology, Adelaide, South Australia, Australia
| | - Jan Kazenwadel
- Centre for Cancer Biology, University of South Australia and SA Pathology, Adelaide, South Australia, Australia.,SA Pathology, Adelaide, South Australia, Australia
| | - Anna Oszmiana
- Centre for Cancer Biology, University of South Australia and SA Pathology, Adelaide, South Australia, Australia.,SA Pathology, Adelaide, South Australia, Australia
| | - Lillian Lim
- Department of Medicine and Cardiovascular Institute, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Naoyuki Miura
- Department of Biochemistry, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Lydia Sorokin
- Institute of Physiological Chemistry and Pathobiochemistry, University of Muenster, Muenster, Germany
| | - Benjamin M Hogan
- Division of Genomics of Development and Disease, Institute for Molecular Bioscience, University of Queensland, Saint Lucia, Queensland, Australia.,Organogenesis and Cancer Program, Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia.,Department of Anatomy and Neuroscience, University of Melbourne, Melbourne, Victoria, Australia
| | - Mark L Kahn
- Department of Medicine and Cardiovascular Institute, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Helen McNeill
- Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, Ontario, Canada.,Department of Molecular Genetics, University of Toronto, Toronto, Ontario, Canada.,Department of Developmental Biology, Washington University School of Medicine, Saint Louis, Missouri, USA
| | - Natasha L Harvey
- Centre for Cancer Biology, University of South Australia and SA Pathology, Adelaide, South Australia, Australia.,SA Pathology, Adelaide, South Australia, Australia
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9
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Chaudhury S, Okuda KS, Koltowska K, Lagendijk AK, Paterson S, Baillie GJ, Simons C, Smith KA, Hogan BM, Bower NI. Localised Collagen2a1 secretion supports lymphatic endothelial cell migration in the zebrafish embryo. Development 2020; 147:dev.190983. [PMID: 32839180 DOI: 10.1242/dev.190983] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2020] [Accepted: 08/07/2020] [Indexed: 01/12/2023]
Abstract
The lymphatic vasculature develops primarily from pre-existing veins. A pool of lymphatic endothelial cells (LECs) first sprouts from cardinal veins followed by migration and proliferation to colonise embryonic tissues. Although much is known about the molecular regulation of LEC fate and sprouting during early lymphangiogenesis, we know far less about the instructive and permissive signals that support LEC migration through the embryo. Using a forward genetic screen, we identified mbtps1 and sec23a, components of the COP-II protein secretory pathway, as essential for developmental lymphangiogenesis. In both mutants, LECs initially depart the cardinal vein but then fail in their ongoing migration. A key cargo that failed to be secreted in both mutants was a type II collagen (Col2a1). Col2a1 is normally secreted by notochord sheath cells, alongside which LECs migrate. col2a1a mutants displayed defects in the migratory behaviour of LECs and failed lymphangiogenesis. These studies thus identify Col2a1 as a key cargo secreted by notochord sheath cells and required for the migration of LECs. These findings combine with our current understanding to suggest that successive cell-to-cell and cell-matrix interactions regulate the migration of LECs through the embryonic environment during development.
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Affiliation(s)
- Smrita Chaudhury
- Division of Genomics of Development and Disease, Institute for Molecular Bioscience, The University of Queensland, St Lucia, QLD 4072, Australia
| | - Kazuhide S Okuda
- Division of Genomics of Development and Disease, Institute for Molecular Bioscience, The University of Queensland, St Lucia, QLD 4072, Australia.,Peter MacCallum Cancer Centre, Organogenesis and Cancer Program, Melbourne, Victoria 3000, Australia
| | - Katarzyna Koltowska
- Division of Genomics of Development and Disease, Institute for Molecular Bioscience, The University of Queensland, St Lucia, QLD 4072, Australia
| | - Anne K Lagendijk
- Division of Genomics of Development and Disease, Institute for Molecular Bioscience, The University of Queensland, St Lucia, QLD 4072, Australia
| | - Scott Paterson
- Division of Genomics of Development and Disease, Institute for Molecular Bioscience, The University of Queensland, St Lucia, QLD 4072, Australia.,Peter MacCallum Cancer Centre, Organogenesis and Cancer Program, Melbourne, Victoria 3000, Australia
| | - Gregory J Baillie
- Division of Genomics of Development and Disease, Institute for Molecular Bioscience, The University of Queensland, St Lucia, QLD 4072, Australia
| | - Cas Simons
- Division of Genomics of Development and Disease, Institute for Molecular Bioscience, The University of Queensland, St Lucia, QLD 4072, Australia
| | - Kelly A Smith
- Division of Genomics of Development and Disease, Institute for Molecular Bioscience, The University of Queensland, St Lucia, QLD 4072, Australia.,Department of Physiology, University of Melbourne, Parkville, Victoria 3010, Australia
| | - Benjamin M Hogan
- Division of Genomics of Development and Disease, Institute for Molecular Bioscience, The University of Queensland, St Lucia, QLD 4072, Australia .,Peter MacCallum Cancer Centre, Organogenesis and Cancer Program, Melbourne, Victoria 3000, Australia.,Department of Anatomy and Neuroscience, University of Melbourne, Parkville, Victoria 3010, Australia
| | - Neil I Bower
- Division of Genomics of Development and Disease, Institute for Molecular Bioscience, The University of Queensland, St Lucia, QLD 4072, Australia
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10
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Mutations in the ARAP3 Gene in Three Families with Primary Lymphedema Negative for Mutations in Known Lymphedema-Associated Genes. Int J Genomics 2020; 2020:3781791. [PMID: 32908855 PMCID: PMC7468673 DOI: 10.1155/2020/3781791] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Revised: 07/07/2020] [Accepted: 08/01/2020] [Indexed: 11/18/2022] Open
Abstract
Background ARAP3 is a small GTPase-activating protein regulator, which has important functions in lymphatic vessel organogenesis and modulation of cell adhesion and migration. Mutations in the ARAP3 gene are associated with impaired lymphatic vessel formation. Objective The aim of our study was to determine the genotypes of lymphedema patients in relation to variants in the ARAP3 gene in order to explore its role in the development of lymphedema. Methods and Results We applied next-generation sequencing to DNA samples of a cohort of 246 Italian patients with lymphatic malformations. When we tested probands for known lymphedema genes, 235 out of 246 were negative. Retrospectively, we tested the DNA of these 235 patients for new candidate lymphedema-associated genes, including ARAP3. Three out of 235 probands proved to carry rare missense heterozygous variants in ARAP3. In the case of two families, other family members were also tested and proved negative for the ARAP3 variant, besides being unaffected by lymphedema. According to in silico analysis, alterations due to these variants have a significant impact on the overall structure and stability of the resulting proteins. Conclusions Based on our results, we propose that variants in ARAP3 could be included in genetic testing for lymphedema.
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11
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Baek S, Oh TG, Secker G, Sutton DL, Okuda KS, Paterson S, Bower NI, Toubia J, Koltowska K, Capon SJ, Baillie GJ, Simons C, Muscat GEO, Lagendijk AK, Smith KA, Harvey NL, Hogan BM. The Alternative Splicing Regulator Nova2 Constrains Vascular Erk Signaling to Limit Specification of the Lymphatic Lineage. Dev Cell 2020; 49:279-292.e5. [PMID: 31014480 DOI: 10.1016/j.devcel.2019.03.017] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2017] [Revised: 01/30/2019] [Accepted: 03/19/2019] [Indexed: 02/06/2023]
Abstract
The correct assignment of cell fate within fields of multipotent progenitors is essential for accurate tissue diversification. The first lymphatic vessels arise from pre-existing veins after venous endothelial cells become specified as lymphatic progenitors. Prox1 specifies lymphatic fate and labels these progenitors; however, the mechanisms restricting Prox1 expression and limiting the progenitor pool remain unknown. We identified a zebrafish mutant that displayed premature, expanded, and prolonged lymphatic specification. The gene responsible encodes the regulator of alternative splicing, Nova2. In zebrafish and human endothelial cells, Nova2 selectively regulates pre-mRNA splicing for components of signaling pathways and phosphoproteins. Nova2-deficient endothelial cells display increased Mapk/Erk signaling, and Prox1 expression is dynamically controlled by Erk signaling. We identify a mechanism whereby Nova2-regulated splicing constrains Erk signaling, thus limiting lymphatic progenitor cell specification. This identifies the capacity of a factor that tunes mRNA splicing to control assignment of cell fate during vascular differentiation.
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Affiliation(s)
- Sungmin Baek
- Division of Genomics of Development and Disease, Institute for Molecular Bioscience, The University of Queensland, St Lucia, Brisbane, QLD 4073, Australia
| | - Tae Gyu Oh
- Division of Cell Biology and Molecular Medicine, Institute for Molecular Bioscience, The University of Queensland, St Lucia, Brisbane, QLD 4073, Australia
| | - Genevieve Secker
- Centre for Cancer Biology, University of South Australia and SA Pathology, Adelaide, SA, Australia
| | - Drew L Sutton
- Centre for Cancer Biology, University of South Australia and SA Pathology, Adelaide, SA, Australia
| | - Kazuhide S Okuda
- Division of Genomics of Development and Disease, Institute for Molecular Bioscience, The University of Queensland, St Lucia, Brisbane, QLD 4073, Australia
| | - Scott Paterson
- Division of Genomics of Development and Disease, Institute for Molecular Bioscience, The University of Queensland, St Lucia, Brisbane, QLD 4073, Australia
| | - Neil I Bower
- Division of Genomics of Development and Disease, Institute for Molecular Bioscience, The University of Queensland, St Lucia, Brisbane, QLD 4073, Australia
| | - John Toubia
- Centre for Cancer Biology, University of South Australia and SA Pathology, Adelaide, SA, Australia; Australian Cancer Research, Centre for Cancer Biology, Foundation Cancer Genomics Facility, University of South Australia and SA Pathology, Adelaide, SA 5000, Australia
| | - Katarzyna Koltowska
- Division of Genomics of Development and Disease, Institute for Molecular Bioscience, The University of Queensland, St Lucia, Brisbane, QLD 4073, Australia
| | - Samuel J Capon
- Division of Genomics of Development and Disease, Institute for Molecular Bioscience, The University of Queensland, St Lucia, Brisbane, QLD 4073, Australia
| | - Gregory J Baillie
- Division of Genomics of Development and Disease, Institute for Molecular Bioscience, The University of Queensland, St Lucia, Brisbane, QLD 4073, Australia
| | - Cas Simons
- Division of Genomics of Development and Disease, Institute for Molecular Bioscience, The University of Queensland, St Lucia, Brisbane, QLD 4073, Australia
| | - George E O Muscat
- Division of Cell Biology and Molecular Medicine, Institute for Molecular Bioscience, The University of Queensland, St Lucia, Brisbane, QLD 4073, Australia
| | - Anne K Lagendijk
- Division of Genomics of Development and Disease, Institute for Molecular Bioscience, The University of Queensland, St Lucia, Brisbane, QLD 4073, Australia
| | - Kelly A Smith
- Division of Genomics of Development and Disease, Institute for Molecular Bioscience, The University of Queensland, St Lucia, Brisbane, QLD 4073, Australia
| | - Natasha L Harvey
- Centre for Cancer Biology, University of South Australia and SA Pathology, Adelaide, SA, Australia
| | - Benjamin M Hogan
- Division of Genomics of Development and Disease, Institute for Molecular Bioscience, The University of Queensland, St Lucia, Brisbane, QLD 4073, Australia.
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12
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McCormick B, Craig HE, Chu JY, Carlin LM, Canel M, Wollweber F, Toivakka M, Michael M, Astier AL, Norton L, Lilja J, Felton JM, Sasaki T, Ivaska J, Hers I, Dransfield I, Rossi AG, Vermeren S. A Negative Feedback Loop Regulates Integrin Inactivation and Promotes Neutrophil Recruitment to Inflammatory Sites. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2019; 203:1579-1588. [PMID: 31427445 PMCID: PMC6731454 DOI: 10.4049/jimmunol.1900443] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/16/2019] [Accepted: 07/16/2019] [Indexed: 01/08/2023]
Abstract
Neutrophils are abundant circulating leukocytes that are rapidly recruited to sites of inflammation in an integrin-dependent fashion. Contrasting with the well-characterized regulation of integrin activation, mechanisms regulating integrin inactivation remain largely obscure. Using mouse neutrophils, we demonstrate in this study that the GTPase activating protein ARAP3 is a critical regulator of integrin inactivation; experiments with Chinese hamster ovary cells indicate that this is not restricted to neutrophils. Specifically, ARAP3 acts in a negative feedback loop downstream of PI3K to regulate integrin inactivation. Integrin ligand binding drives the activation of PI3K and of its effectors, including ARAP3, by outside-in signaling. ARAP3, in turn, promotes localized integrin inactivation by negative inside-out signaling. This negative feedback loop reduces integrin-mediated PI3K activity, with ARAP3 effectively switching off its own activator, while promoting turnover of substrate adhesions. In vitro, ARAP3-deficient neutrophils display defective PIP3 polarization, adhesion turnover, and transendothelial migration. In vivo, ARAP3-deficient neutrophils are characterized by a neutrophil-autonomous recruitment defect to sites of inflammation.
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Affiliation(s)
- Barry McCormick
- Centre for Inflammation Research, University of Edinburgh, Edinburgh EH16 4TJ, United Kingdom
| | - Helen E Craig
- Babraham Institute, Babraham Research Campus, Cambridge CB22 3AT, United Kingdom
| | - Julia Y Chu
- Centre for Inflammation Research, University of Edinburgh, Edinburgh EH16 4TJ, United Kingdom
| | - Leo M Carlin
- Cancer Research UK Beatson Institute, Glasgow G61 1BD, United Kingdom
- Institute of Cancer Sciences, University of Glasgow, Glasgow G61 1BD, United Kingdom
| | - Marta Canel
- Centre for Inflammation Research, University of Edinburgh, Edinburgh EH16 4TJ, United Kingdom
| | - Florian Wollweber
- Centre for Inflammation Research, University of Edinburgh, Edinburgh EH16 4TJ, United Kingdom
| | - Matilda Toivakka
- Centre for Inflammation Research, University of Edinburgh, Edinburgh EH16 4TJ, United Kingdom
| | - Melina Michael
- Centre for Inflammation Research, University of Edinburgh, Edinburgh EH16 4TJ, United Kingdom
| | - Anne L Astier
- Centre for Inflammation Research, University of Edinburgh, Edinburgh EH16 4TJ, United Kingdom
- Centre de Physiopathologie Toulouse-Purpan, INSERM U1043, CNRS U5282, Université Toulouse, 31024 Toulouse Cedex 3, France
| | - Laura Norton
- Babraham Institute, Babraham Research Campus, Cambridge CB22 3AT, United Kingdom
| | - Johanna Lilja
- Turku Centre for Biotechnology, University of Turku, FI-20520 Turku, Finland
| | - Jennifer M Felton
- Centre for Inflammation Research, University of Edinburgh, Edinburgh EH16 4TJ, United Kingdom
| | - Takehiko Sasaki
- Department of Biochemical Pathophysiology, Medical Research Institute, Tokyo Medical and Dental University, Tokyo 113-8510, Japan; and
| | - Johanna Ivaska
- Centre de Physiopathologie Toulouse-Purpan, INSERM U1043, CNRS U5282, Université Toulouse, 31024 Toulouse Cedex 3, France
| | - Ingeborg Hers
- School of Physiology, Pharmacology and Neuroscience, University of Bristol, Bristol BS8 1TD, United Kingdom
| | - Ian Dransfield
- Centre for Inflammation Research, University of Edinburgh, Edinburgh EH16 4TJ, United Kingdom
| | - Adriano G Rossi
- Centre for Inflammation Research, University of Edinburgh, Edinburgh EH16 4TJ, United Kingdom
| | - Sonja Vermeren
- Centre for Inflammation Research, University of Edinburgh, Edinburgh EH16 4TJ, United Kingdom;
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13
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Okuda KS, Lee HM, Velaithan V, Ng MF, Patel V. Utilizing Zebrafish to Identify Anti-(Lymph)Angiogenic Compounds for Cancer Treatment: Promise and Future Challenges. Microcirculation 2018; 23:389-405. [PMID: 27177346 DOI: 10.1111/micc.12289] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2016] [Accepted: 05/11/2016] [Indexed: 12/13/2022]
Abstract
Cancer metastasis which predominantly occurs through blood and lymphatic vessels, is the leading cause of death in cancer patients. Consequently, several anti-angiogenic agents have been approved as therapeutic agents for human cancers such as metastatic renal cell carcinoma. Also, anti-lymphangiogenic drugs such as monoclonal antibodies VGX-100 and IMC-3C5 have undergone phase I clinical trials for advanced and metastatic solid tumors. Although anti-tumor-associated angiogenesis has proven to be a promising therapeutic strategy for human cancers, this approach is fraught with toxicities and development of drug resistance. This emphasizes the need for alternative anti-(lymph)angiogenic drugs. The use of zebrafish has become accepted as an established model for high-throughput screening, vascular biology, and cancer research. Importantly, various zebrafish transgenic lines have now been generated that can readily discriminate different vascular compartments. This now enables detailed in vivo studies that are relevant to both human physiological and tumor (lymph)angiogenesis to be conducted in zebrafish. This review highlights recent advancements in the zebrafish anti-vascular screening platform and showcases promising new anti-(lymph)angiogenic compounds that have been derived from this model. In addition, this review discusses the promises and challenges of the zebrafish model in the context of anti-(lymph)angiogenic compound discovery for cancer treatment.
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Affiliation(s)
- Kazuhide S Okuda
- Drug Discovery, Cancer Research Malaysia, Subang Jaya, Selangor, Malaysia
| | - Hui Mei Lee
- Drug Discovery, Cancer Research Malaysia, Subang Jaya, Selangor, Malaysia
| | - Vithya Velaithan
- Drug Discovery, Cancer Research Malaysia, Subang Jaya, Selangor, Malaysia
| | - Mei Fong Ng
- Drug Discovery, Cancer Research Malaysia, Subang Jaya, Selangor, Malaysia
| | - Vyomesh Patel
- Drug Discovery, Cancer Research Malaysia, Subang Jaya, Selangor, Malaysia
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14
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Villani R, Hodgson S, Legrand J, Greaney J, Wong HY, Pichol-Thievend C, Adolphe C, Wainwight B, Francois M, Khosrotehrani K. Dominant-negative Sox18 function inhibits dermal papilla maturation and differentiation in all murine hair types. Development 2017; 144:1887-1895. [DOI: 10.1242/dev.143917] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2016] [Accepted: 01/19/2017] [Indexed: 12/25/2022]
Abstract
SOX family proteins SOX2 and SOX18 have been reported as being essential in determining hair follicle type; however, the role they play during development remains unclear. Here, we demonstrate that Sox18 regulates the normal differentiation of the dermal papilla of all hair types. In guard (primary) hair dermal condensate (DC) cells, we identified transient Sox18 in addition to SOX2 expression at E14.5, which allowed fate tracing of primary DC cells until birth. Similarly, expression of Sox18 was detected in the DC cells of secondary hairs at E16.5 and in tertiary hair at E18.5. Dominant-negative Sox18 mutation (opposum) did not prevent DC formation in any hair type. However, it affected dermal papilla differentiation, restricting hair formation especially in secondary and tertiary hairs. This Sox18 mutation also prevented neonatal dermal cells or dermal papilla spheres from inducing hair in regeneration assays. Microarray expression studies identified WNT5A and TNC as potential downstream effectors of SOX18 that are important for epidermal WNT signalling. In conclusion, SOX18 acts as a mesenchymal molecular switch necessary for the formation and function of the dermal papilla in all hair types.
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Affiliation(s)
- Rehan Villani
- The University of Queensland, UQ Centre for Clinical Research, Royal Brisbane Hospital, Herston Road, Herston, Brisbane 4029, Queensland, Australia
- The University of Queensland, UQ Diamantina Institute, Translational Research Institute, 37 Kent Street, Woolloongabba, Brisbane 4102, Queensland, Australia
| | - Samantha Hodgson
- The University of Queensland, UQ Centre for Clinical Research, Royal Brisbane Hospital, Herston Road, Herston, Brisbane 4029, Queensland, Australia
| | - Julien Legrand
- The University of Queensland, UQ Centre for Clinical Research, Royal Brisbane Hospital, Herston Road, Herston, Brisbane 4029, Queensland, Australia
| | - Jessica Greaney
- The University of Queensland, UQ Diamantina Institute, Translational Research Institute, 37 Kent Street, Woolloongabba, Brisbane 4102, Queensland, Australia
| | - Ho Yi Wong
- The University of Queensland, UQ Centre for Clinical Research, Royal Brisbane Hospital, Herston Road, Herston, Brisbane 4029, Queensland, Australia
| | - Cathy Pichol-Thievend
- The University of Queensland, Institute for Molecular Bioscience, 306 Carmody Road, St Lucia, Brisbane 4072, Queensland, Australia
| | - Christelle Adolphe
- The University of Queensland, Institute for Molecular Bioscience, 306 Carmody Road, St Lucia, Brisbane 4072, Queensland, Australia
| | - Brandon Wainwight
- The University of Queensland, Institute for Molecular Bioscience, 306 Carmody Road, St Lucia, Brisbane 4072, Queensland, Australia
| | - Mathias Francois
- The University of Queensland, Institute for Molecular Bioscience, 306 Carmody Road, St Lucia, Brisbane 4072, Queensland, Australia
| | - Kiarash Khosrotehrani
- The University of Queensland, UQ Centre for Clinical Research, Royal Brisbane Hospital, Herston Road, Herston, Brisbane 4029, Queensland, Australia
- The University of Queensland, UQ Diamantina Institute, Translational Research Institute, 37 Kent Street, Woolloongabba, Brisbane 4102, Queensland, Australia
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15
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Pdgf signalling guides neural crest contribution to the haematopoietic stem cell specification niche. Nat Cell Biol 2017; 19:457-467. [PMID: 28394883 PMCID: PMC5546139 DOI: 10.1038/ncb3508] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2016] [Accepted: 03/14/2017] [Indexed: 12/14/2022]
Abstract
Haematopoietic stem cells (HSCs) support maintenance of the haematopoietic and immune systems throughout the life of vertebrates, and are the therapeutic component of bone marrow transplants. Understanding native specification of HSCs, to uncover key signals that might help improve in vitro directed differentiation protocols, has been a longstanding biomedical goal. The current impossibility of specifying true HSCs in vitro suggests that key signals remain unknown. We speculated that such signals might be presented by surrounding “niche” cells, but no such cells have been defined. Here we demonstrate in zebrafish, that trunk neural crest (NC) physically associate with HSC precursors in the dorsal aorta (DA) just prior to initiation of the definitive haematopoietic programme. Preventing association of the NC with the DA leads to loss of HSCs. Our results define NC as key cellular components of the HSC specification niche that can be profiled to identify unknown HSC specification signals.
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16
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Patel J, Seppanen EJ, Rodero MP, Wong HY, Donovan P, Neufeld Z, Fisk NM, Francois M, Khosrotehrani K. Functional Definition of Progenitors Versus Mature Endothelial Cells Reveals Key SoxF-Dependent Differentiation Process. Circulation 2016; 135:786-805. [PMID: 27899395 DOI: 10.1161/circulationaha.116.024754] [Citation(s) in RCA: 89] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/30/2016] [Accepted: 11/16/2016] [Indexed: 12/13/2022]
Abstract
BACKGROUND During adult life, blood vessel formation is thought to occur via angiogenic processes involving branching from existing vessels. An alternate proposal suggests that neovessels form from endothelial progenitors able to assemble the intimal layers. We here aimed to define vessel-resident endothelial progenitors in vivo in a variety of tissues in physiological and pathological situations such as normal aorta, lungs, and wound healing, tumors, and placenta, as well. METHODS Based on protein expression levels of common endothelial markers using flow cytometry, 3 subpopulations of endothelial cells could be identified among VE-Cadherin+ and CD45- cells. RESULTS Lineage tracing by using Cdh5creERt2/Rosa-YFP reporter strategy demonstrated that the CD31-/loVEGFR2lo/intracellular endothelial population was indeed an endovascular progenitor (EVP) of an intermediate CD31intVEGFR2lo/intracellular transit amplifying (TA) and a definitive differentiated (D) CD31hiVEGFR2hi/extracellular population. EVP cells arose from vascular-resident beds that could not be transferred by bone marrow transplantation. Furthermore, EVP displayed progenitor-like status with a high proportion of cells in a quiescent cell cycle phase as assessed in wounds, tumors, and aorta. Only EVP cells and not TA and D cells had self-renewal capacity as demonstrated by colony-forming capacity in limiting dilution and by transplantation in Matrigel plugs in recipient mice. RNA sequencing revealed prominent gene expression differences between EVP and D cells. In particular, EVP cells highly expressed genes related to progenitor function including Sox9, Il33, Egfr, and Pdfgrα. Conversely, D cells highly expressed genes related to differentiated endothelium including Ets1&2, Gata2, Cd31, Vwf, and Notch. The RNA sequencing also pointed to an essential role of the Sox18 transcription factor. The role of SOX18 in the differentiation process was validated by using lineage-tracing experiments based on Sox18CreERt2/Rosa-YFP mice. Besides, in the absence of functional SOX18/SOXF, EVP progenitors were still present, but TA and D populations were significantly reduced. CONCLUSIONS Our findings support an entirely novel endothelial hierarchy, from EVP to TA to D, as defined by self-renewal, differentiation, and molecular profiling of an endothelial progenitor. This paradigm shift in our understanding of vascular-resident endothelial progenitors in tissue regeneration opens new avenues for better understanding of cardiovascular biology.
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Affiliation(s)
- Jatin Patel
- From The University of Queensland, UQ Centre for Clinical Research, Experimental Dermatology Group, Brisbane, QLD, Australia (J.P., E.J.S., M.P.R., H.Y.W., N.M.F., K.K.); The University of Queensland, UQ Diamantina Institute, Translational Research Institute, Woolloongabba, QLD, Australia (P.D., K.K.); The University of Queensland, School of Mathematics and Physics, Brisbane, QLD, Australia (Z.N.); and The University of Queensland, Institute of Molecular Biosciences, Brisbane, QLD, Australia (M.F.)
| | - Elke J Seppanen
- From The University of Queensland, UQ Centre for Clinical Research, Experimental Dermatology Group, Brisbane, QLD, Australia (J.P., E.J.S., M.P.R., H.Y.W., N.M.F., K.K.); The University of Queensland, UQ Diamantina Institute, Translational Research Institute, Woolloongabba, QLD, Australia (P.D., K.K.); The University of Queensland, School of Mathematics and Physics, Brisbane, QLD, Australia (Z.N.); and The University of Queensland, Institute of Molecular Biosciences, Brisbane, QLD, Australia (M.F.)
| | - Mathieu P Rodero
- From The University of Queensland, UQ Centre for Clinical Research, Experimental Dermatology Group, Brisbane, QLD, Australia (J.P., E.J.S., M.P.R., H.Y.W., N.M.F., K.K.); The University of Queensland, UQ Diamantina Institute, Translational Research Institute, Woolloongabba, QLD, Australia (P.D., K.K.); The University of Queensland, School of Mathematics and Physics, Brisbane, QLD, Australia (Z.N.); and The University of Queensland, Institute of Molecular Biosciences, Brisbane, QLD, Australia (M.F.)
| | - Ho Yi Wong
- From The University of Queensland, UQ Centre for Clinical Research, Experimental Dermatology Group, Brisbane, QLD, Australia (J.P., E.J.S., M.P.R., H.Y.W., N.M.F., K.K.); The University of Queensland, UQ Diamantina Institute, Translational Research Institute, Woolloongabba, QLD, Australia (P.D., K.K.); The University of Queensland, School of Mathematics and Physics, Brisbane, QLD, Australia (Z.N.); and The University of Queensland, Institute of Molecular Biosciences, Brisbane, QLD, Australia (M.F.)
| | - Prudence Donovan
- From The University of Queensland, UQ Centre for Clinical Research, Experimental Dermatology Group, Brisbane, QLD, Australia (J.P., E.J.S., M.P.R., H.Y.W., N.M.F., K.K.); The University of Queensland, UQ Diamantina Institute, Translational Research Institute, Woolloongabba, QLD, Australia (P.D., K.K.); The University of Queensland, School of Mathematics and Physics, Brisbane, QLD, Australia (Z.N.); and The University of Queensland, Institute of Molecular Biosciences, Brisbane, QLD, Australia (M.F.)
| | - Zoltan Neufeld
- From The University of Queensland, UQ Centre for Clinical Research, Experimental Dermatology Group, Brisbane, QLD, Australia (J.P., E.J.S., M.P.R., H.Y.W., N.M.F., K.K.); The University of Queensland, UQ Diamantina Institute, Translational Research Institute, Woolloongabba, QLD, Australia (P.D., K.K.); The University of Queensland, School of Mathematics and Physics, Brisbane, QLD, Australia (Z.N.); and The University of Queensland, Institute of Molecular Biosciences, Brisbane, QLD, Australia (M.F.)
| | - Nicholas M Fisk
- From The University of Queensland, UQ Centre for Clinical Research, Experimental Dermatology Group, Brisbane, QLD, Australia (J.P., E.J.S., M.P.R., H.Y.W., N.M.F., K.K.); The University of Queensland, UQ Diamantina Institute, Translational Research Institute, Woolloongabba, QLD, Australia (P.D., K.K.); The University of Queensland, School of Mathematics and Physics, Brisbane, QLD, Australia (Z.N.); and The University of Queensland, Institute of Molecular Biosciences, Brisbane, QLD, Australia (M.F.)
| | - Mathias Francois
- From The University of Queensland, UQ Centre for Clinical Research, Experimental Dermatology Group, Brisbane, QLD, Australia (J.P., E.J.S., M.P.R., H.Y.W., N.M.F., K.K.); The University of Queensland, UQ Diamantina Institute, Translational Research Institute, Woolloongabba, QLD, Australia (P.D., K.K.); The University of Queensland, School of Mathematics and Physics, Brisbane, QLD, Australia (Z.N.); and The University of Queensland, Institute of Molecular Biosciences, Brisbane, QLD, Australia (M.F.)
| | - Kiarash Khosrotehrani
- From The University of Queensland, UQ Centre for Clinical Research, Experimental Dermatology Group, Brisbane, QLD, Australia (J.P., E.J.S., M.P.R., H.Y.W., N.M.F., K.K.); The University of Queensland, UQ Diamantina Institute, Translational Research Institute, Woolloongabba, QLD, Australia (P.D., K.K.); The University of Queensland, School of Mathematics and Physics, Brisbane, QLD, Australia (Z.N.); and The University of Queensland, Institute of Molecular Biosciences, Brisbane, QLD, Australia (M.F.).
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17
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Roy NS, Yohe ME, Randazzo PA, Gruschus JM. Allosteric properties of PH domains in Arf regulatory proteins. CELLULAR LOGISTICS 2016; 6:e1181700. [PMID: 27294009 DOI: 10.1080/21592799.2016.1181700] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2016] [Revised: 04/13/2016] [Accepted: 04/14/2016] [Indexed: 10/21/2022]
Abstract
Pleckstrin Homology (PH) domains bind phospholipids and proteins. They are critical regulatory elements of a number enzymes including guanine nucleotide exchange factors (GEFs) and GTPase-activating proteins (GAPs) for Ras-superfamily guanine nucleotide binding proteins such as ADP-ribosylation factors (Arfs). Recent studies have indicated that many PH domains may bind more than one ligand cooperatively. Here we discuss the molecular basis of PH domain-dependent allosteric behavior of 2 ADP-ribosylation factor exchange factors, Grp1 and Brag2, cooperative binding of ligands to the PH domains of Grp1 and the Arf GTPase-activating protein, ASAP1, and the consequences for activity of the associated catalytic domains.
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Affiliation(s)
- Neeladri Sekhar Roy
- Laboratory of Cellular and Molecular Biology, National Cancer Institute, National Institutes of Health , Bethesda, MD, USA
| | - Marielle E Yohe
- Genetics Branch, National Cancer Institute, National Institutes of Health , Bethesda, MD, USA
| | - Paul A Randazzo
- Laboratory of Cellular and Molecular Biology, National Cancer Institute, National Institutes of Health , Bethesda, MD, USA
| | - James M Gruschus
- Laboratory of Structural Biophysics, National Heart, Lung and Blood Institute, National Institutes of Health , Bethesda, MD, USA
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18
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Astin JW, Crosier PS. Lymphatics, Cancer and Zebrafish. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2016; 916:199-218. [DOI: 10.1007/978-3-319-30654-4_9] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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19
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Koltowska K, Lagendijk A, Pichol-Thievend C, Fischer J, Francois M, Ober E, Yap A, Hogan B. Vegfc Regulates Bipotential Precursor Division and Prox1 Expression to Promote Lymphatic Identity in Zebrafish. Cell Rep 2015; 13:1828-41. [DOI: 10.1016/j.celrep.2015.10.055] [Citation(s) in RCA: 75] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2015] [Revised: 09/01/2015] [Accepted: 10/16/2015] [Indexed: 10/22/2022] Open
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Koltowska K, Paterson S, Bower NI, Baillie GJ, Lagendijk AK, Astin JW, Chen H, Francois M, Crosier PS, Taft RJ, Simons C, Smith KA, Hogan BM. mafba is a downstream transcriptional effector of Vegfc signaling essential for embryonic lymphangiogenesis in zebrafish. Genes Dev 2015; 29:1618-30. [PMID: 26253536 PMCID: PMC4536310 DOI: 10.1101/gad.263210.115] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Koltowska et al. used a forward genetic screen in zebrafish to identify the transcription factor mafba as essential for lymphatic vessel development. Vegfc signaling increases mafba expression to control downstream transcription, and this relationship is SoxF transcription factor-dependent. The lymphatic vasculature plays roles in tissue fluid balance, immune cell trafficking, fatty acid absorption, cancer metastasis, and cardiovascular disease. Lymphatic vessels form by lymphangiogenesis, the sprouting of new lymphatics from pre-existing vessels, in both development and disease contexts. The apical signaling pathway in lymphangiogenesis is the VEGFC/VEGFR3 pathway, yet how signaling controls cellular transcriptional output remains unknown. We used a forward genetic screen in zebrafish to identify the transcription factor mafba as essential for lymphatic vessel development. We found that mafba is required for the migration of lymphatic precursors after their initial sprouting from the posterior cardinal vein. mafba expression is enriched in sprouts emerging from veins, and we show that mafba functions cell-autonomously during lymphatic vessel development. Mechanistically, Vegfc signaling increases mafba expression to control downstream transcription, and this regulatory relationship is dependent on the activity of SoxF transcription factors, which are essential for mafba expression in venous endothelium. Here we identify an indispensable Vegfc–SoxF–Mafba pathway in lymphatic development.
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Affiliation(s)
- Katarzyna Koltowska
- Division of Genomics of Development and Disease, Institute for Molecular Bioscience, The University of Queensland, St Lucia, Brisbane, Queensland 4072, Australia
| | - Scott Paterson
- Division of Genomics of Development and Disease, Institute for Molecular Bioscience, The University of Queensland, St Lucia, Brisbane, Queensland 4072, Australia
| | - Neil I Bower
- Division of Genomics of Development and Disease, Institute for Molecular Bioscience, The University of Queensland, St Lucia, Brisbane, Queensland 4072, Australia
| | - Gregory J Baillie
- Division of Genomics of Development and Disease, Institute for Molecular Bioscience, The University of Queensland, St Lucia, Brisbane, Queensland 4072, Australia
| | - Anne K Lagendijk
- Division of Genomics of Development and Disease, Institute for Molecular Bioscience, The University of Queensland, St Lucia, Brisbane, Queensland 4072, Australia
| | - Jonathan W Astin
- Department of Molecular Medicine and Pathology, School of Medical Sciences, University of Auckland, Auckland 1023, New Zealand
| | - Huijun Chen
- Division of Genomics of Development and Disease, Institute for Molecular Bioscience, The University of Queensland, St Lucia, Brisbane, Queensland 4072, Australia
| | - Mathias Francois
- Division of Genomics of Development and Disease, Institute for Molecular Bioscience, The University of Queensland, St Lucia, Brisbane, Queensland 4072, Australia
| | - Philip S Crosier
- Department of Molecular Medicine and Pathology, School of Medical Sciences, University of Auckland, Auckland 1023, New Zealand
| | - Ryan J Taft
- Division of Genomics of Development and Disease, Institute for Molecular Bioscience, The University of Queensland, St Lucia, Brisbane, Queensland 4072, Australia
| | - Cas Simons
- Division of Genomics of Development and Disease, Institute for Molecular Bioscience, The University of Queensland, St Lucia, Brisbane, Queensland 4072, Australia
| | - Kelly A Smith
- Division of Genomics of Development and Disease, Institute for Molecular Bioscience, The University of Queensland, St Lucia, Brisbane, Queensland 4072, Australia
| | - Benjamin M Hogan
- Division of Genomics of Development and Disease, Institute for Molecular Bioscience, The University of Queensland, St Lucia, Brisbane, Queensland 4072, Australia
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21
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van Buul JD, Geerts D, Huveneers S. Rho GAPs and GEFs: controling switches in endothelial cell adhesion. Cell Adh Migr 2015; 8:108-24. [PMID: 24622613 PMCID: PMC4049857 DOI: 10.4161/cam.27599] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Within blood vessels, endothelial cell–cell and cell–matrix adhesions are crucial to preserve barrier function, and these adhesions are tightly controlled during vascular development, angiogenesis, and transendothelial migration of inflammatory cells. Endothelial cellular signaling that occurs via the family of Rho GTPases coordinates these cell adhesion structures through cytoskeletal remodelling. In turn, Rho GTPases are regulated by GTPase-activating proteins (GAPs) and guanine nucleotide exchange factors (GEFs). To understand how endothelial cells initiate changes in the activity of Rho GTPases, and thereby regulate cell adhesion, we will discuss the role of Rho GAPs and GEFs in vascular biology. Many potentially important Rho regulators have not been studied in detail in endothelial cells. We therefore will first overview which GAPs and GEFs are highly expressed in endothelium, based on comparative gene expression analysis of human endothelial cells compared with other tissue cell types. Subsequently, we discuss the relevance of Rho GAPs and GEFs for endothelial cell adhesion in vascular homeostasis and disease.
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Affiliation(s)
- Jaap D van Buul
- Department of Molecular Cell Biology; Sanquin Research and Swammerdam Institute for Life Sciences; University of Amsterdam; The Netherlands
| | - Dirk Geerts
- Department of Pediatric Oncology/Hematology; Erasmus University Medical Center; Rotterdam, The Netherlands
| | - Stephan Huveneers
- Department of Molecular Cell Biology; Sanquin Research and Swammerdam Institute for Life Sciences; University of Amsterdam; The Netherlands
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22
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Xing YH, Zhang JL, Lu L, Li DG, Wang YY, Huang S, Li CC, Zhang ZB, Li JG, Xu GS, Meng AM. Identification of specific gene modules in mouse lung tissue exposed to cigarette smoke. Asian Pac J Cancer Prev 2015; 16:4251-6. [PMID: 26028081 DOI: 10.7314/apjcp.2015.16.10.4251] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Exposure to cigarette may affect human health and increase risk of a wide range of diseases including pulmonary diseases, such as chronic obstructive pulmonary disease (COPD), asthma, lung fibrosis and lung cancer. However, the molecular mechanisms of pathogenesis induced by cigarettes still remain obscure even with extensive studies. With systemic view, we attempted to identify the specific gene modules that might relate to injury caused by cigarette smoke and identify hub genes for potential therapeutic targets or biomarkers from specific gene modules. MATERIALS AND METHODS The dataset GSE18344 was downloaded from the Gene Expression Omnibus (GEO) and divided into mouse cigarette smoke exposure and control groups. Subsequently, weighted gene co-expression network analysis (WGCNA) was used to construct a gene co-expression network for each group and detected specific gene modules of cigarette smoke exposure by comparison. RESULTS A total of ten specific gene modules were identified only in the cigarette smoke exposure group but not in the control group. Seven hub genes were identified as well, including Fip1l1, Anp32a, Acsl4, Evl, Sdc1, Arap3 and Cd52. CONCLUSIONS Specific gene modules may provide better understanding of molecular mechanisms, and hub genes are potential candidates of therapeutic targets that may possible improve development of novel treatment approaches.
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Affiliation(s)
- Yong-Hua Xing
- Tianjin Key Lab of Molecular Nuclear Medicine, Institute of Radiation Medicine of Chinese Academy of Medical Science and Peking Union Medical College, Tianjin, China E-mail :
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23
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Song Y, Jiang J, Vermeren S, Tong W. ARAP3 functions in hematopoietic stem cells. PLoS One 2014; 9:e116107. [PMID: 25542002 PMCID: PMC4277471 DOI: 10.1371/journal.pone.0116107] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2014] [Accepted: 12/05/2014] [Indexed: 11/25/2022] Open
Abstract
ARAP3 is a GTPase-activating protein (GAP) that inactivates Arf6 and RhoA small GTPases. ARAP3 deficiency in mice causes a sprouting angiogenic defect resulting in embryonic lethality by E11. Mice with an ARAP3 R302,303A mutation (Arap3KI/KI) that prevents activation by phosphoinositide-3-kinase (PI3K) have a similar angiogenic phenotype, although some animals survive to adulthood. Here, we report that hematopoietic stem cells (HSCs) from rare adult Arap3KI/KI bone marrow are compromised in their ability to reconstitute recipient mice and to self-renew. To elucidate the potential cell-autonomous and non-cell-autonomous roles of ARAP3 in hematopoiesis, we conditionally deleted Arap3 in hematopoietic cells and in several cell types within the HSC niche. Excision of Arap3 in hematopoietic cells using Vav1-Cre does not alter the ability of ARAP3-deficient progenitor cells to proliferate and differentiate in vitro or ARAP3-deficient HSCs to provide multi-lineage reconstitution and to undergo self-renewal in vivo. Thus, our data suggest that ARAP3 does not play a cell-autonomous role in HSPCs. Deletion of Arap3 in osteoblasts and mesenchymal stromal cells using Prx1-Cre resulted in no discernable phenotypes in hematopoietic development or HSC homeostasis in adult mice. In contrast, deletion of Arap3 using vascular endothelial cadherin (VEC or Cdh5)-driven Cre resulted in embryonic lethality, however HSCs from surviving adult mice were largely normal. Reverse transplantations into VEC-driven Arap3 conditional knockout mice revealed no discernable difference in HSC frequencies or function in comparison to control mice. Taken together, our investigation suggests that despite a critical role for ARAP3 in embryonic vascular development, its loss in endothelial cells minimally impacts HSCs in adult bone marrow.
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Affiliation(s)
- Yiwen Song
- Department of Pediatrics, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania, United States of America
- Division of Hematology, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, United States of America
| | - Jing Jiang
- Division of Hematology, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, United States of America
| | - Sonja Vermeren
- MRC Centre for Inflammation Research, The Queen's Medical Research Institute, The University of Edinburgh, United Kingdom
| | - Wei Tong
- Department of Pediatrics, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania, United States of America
- Division of Hematology, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, United States of America
- * E-mail:
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24
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Blei F. Update December 2014. Lymphat Res Biol 2014. [DOI: 10.1089/lrb.2014.1242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
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25
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Coxam B, Neyt C, Grassini DR, Le Guen L, Smith KA, Schulte-Merker S, Hogan BM. carbamoyl-phosphate synthetase 2, aspartate transcarbamylase, and dihydroorotase (cad) regulates Notch signaling and vascular development in zebrafish. Dev Dyn 2014; 244:1-9. [PMID: 25294789 DOI: 10.1002/dvdy.24209] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2014] [Revised: 09/19/2014] [Accepted: 09/22/2014] [Indexed: 11/11/2022] Open
Abstract
BACKGROUND The interplay between Notch and Vegf signaling regulates angiogenesis in the embryo. Notch signaling limits the responsiveness of endothelial cells to Vegf to control sprouting. Despite the importance of this regulatory relationship, much remains to be understood about extrinsic factors that modulate the pathway. RESULTS During a forward genetic screen for novel regulators of lymphangiogenesis, we isolated a mutant with reduced lymphatic vessel development. This mutant also exhibited hyperbranching arteries, reminiscent of Notch pathway mutants. Positional cloning identified a missense mutation in the carbamoyl-phosphate synthetase 2, aspartate transcarbamylase, and dihydroorotase (cad) gene. Cad is essential for UDP biosynthesis, which is necessary for protein glycosylation and de novo biosynthesis of pyrimidine-based nucleotides. Using a transgenic reporter of Notch activity, we demonstrate that Notch signaling is significantly reduced in cad(hu10125) mutants. In this context, genetic epistasis showed that increased endothelial cell responsiveness to Vegfc/Vegfr3 signaling drives excessive artery branching. CONCLUSIONS These findings suggest important posttranslational modifications requiring Cad as an unappreciated mechanism that regulates Notch/Vegf signaling during angiogenesis.
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Affiliation(s)
- Baptiste Coxam
- Division of Molecular Genetics and Development, Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD, Australia
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26
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Coxam B, Sabine A, Bower NI, Smith KA, Pichol-Thievend C, Skoczylas R, Astin JW, Frampton E, Jaquet M, Crosier PS, Parton RG, Harvey NL, Petrova TV, Schulte-Merker S, Francois M, Hogan BM. Pkd1 regulates lymphatic vascular morphogenesis during development. Cell Rep 2014; 7:623-33. [PMID: 24767999 DOI: 10.1016/j.celrep.2014.03.063] [Citation(s) in RCA: 68] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2013] [Revised: 02/13/2014] [Accepted: 03/26/2014] [Indexed: 01/21/2023] Open
Abstract
Lymphatic vessels arise during development through sprouting of precursor cells from veins, which is regulated by known signaling and transcriptional mechanisms. The ongoing elaboration of vessels to form a network is less well understood. This involves cell polarization, coordinated migration, adhesion, mixing, regression, and shape rearrangements. We identified a zebrafish mutant, lymphatic and cardiac defects 1 (lyc1), with reduced lymphatic vessel development. A mutation in polycystic kidney disease 1a was responsible for the phenotype. PKD1 is the most frequently mutated gene in autosomal dominant polycystic kidney disease (ADPKD). Initial lymphatic precursor sprouting is normal in lyc1 mutants, but ongoing migration fails. Loss of Pkd1 in mice has no effect on precursor sprouting but leads to failed morphogenesis of the subcutaneous lymphatic network. Individual lymphatic endothelial cells display defective polarity, elongation, and adherens junctions. This work identifies a highly selective and unexpected role for Pkd1 in lymphatic vessel morphogenesis during development.
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Affiliation(s)
- Baptiste Coxam
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Amélie Sabine
- Department of Oncology, University Hospital of Lausanne, and Department of Biochemistry, University of Lausanne, 1066 Epalinges, Switzerland
| | - Neil I Bower
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Kelly A Smith
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Cathy Pichol-Thievend
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Renae Skoczylas
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Jonathan W Astin
- Department of Molecular Medicine and Pathology, School of Medical Sciences, The University of Auckland, 1142 Auckland, New Zealand
| | - Emmanuelle Frampton
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Muriel Jaquet
- Department of Oncology, University Hospital of Lausanne, and Department of Biochemistry, University of Lausanne, 1066 Epalinges, Switzerland
| | - Philip S Crosier
- Department of Molecular Medicine and Pathology, School of Medical Sciences, The University of Auckland, 1142 Auckland, New Zealand
| | - Robert G Parton
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Natasha L Harvey
- Division of Haematology, Centre for Cancer Biology, SA Pathology, Adelaide, SA 5000, Australia
| | - Tatiana V Petrova
- Department of Oncology, University Hospital of Lausanne, and Department of Biochemistry, University of Lausanne, 1066 Epalinges, Switzerland
| | | | - Mathias Francois
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Benjamin M Hogan
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD 4072, Australia.
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