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Bronner M. In the Spotlight-Established researcher. J Exp Zool B Mol Dev Evol 2023; 340:435-436. [PMID: 36710471 DOI: 10.1002/jez.b.23190] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Accepted: 12/31/2022] [Indexed: 01/31/2023]
Affiliation(s)
- Marianne Bronner
- Division of Biology and Biological Sciences, California Institute of Technology, Pasadena, California, USA
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Grosyeux C, Jourdan L, Jellimann JM, Grandmougin A, Bronner M, Lambert L, Bonnet C. ENPP1 homozygous stop-loss variant causing generalized arterial cal cifications of infancy: About a severe neonatal clinical case. Eur J Med Genet 2023:104803. [PMID: 37379879 DOI: 10.1016/j.ejmg.2023.104803] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Revised: 05/15/2023] [Accepted: 06/12/2023] [Indexed: 06/30/2023]
Abstract
Generalized Arterial Calcifications of Infancy (GACI) is an extremely rare autosomal recessive genetic condition, mostly due to pathogenic variations in the ENPP1 gene (GACI1, MIM # 208000, ENPP1, MIM *173335). To date 46 likely pathogenic or pathogenic distinct variations in ENPP1 have been described, including nonsense, frameshift, missense, splicing variations, and large deletions. Here we report a case of GACI in a male newborn with a homozygous stop-loss variant in ENPP1 treated in Nancy Regional University Maternity Hospital. Based on proband main clinical signs, clinical exome sequencing was performed and showed a deletion of one nucleotide leading to frameshift and stop-loss (NM_006208.3 (ENPP1):c.2746del,p.(Thr916Hisfs*23)). Clinical presentation is characterized by primary neonatal arterial hypertension resulting in hypertrophic cardiomyopathy decompensated by three cardiogenic shocks and a neonatal deep right sylvian stroke. The child died at 24 days of life. This is the first report of a pathogenic stop-loss variant in ENPP1. It is an opportunity to remind clinicians of GACI disease, a rare and severe etiology in neonates with severe hypertension, and possibility of bisphosphonates therapy.
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Affiliation(s)
- C Grosyeux
- : Soins Intensifs et Réanimation Néonatals, Pôle Enfants-néonatologie, Maternité régionale Universitaire, Nancy, France
| | - L Jourdan
- : Soins Intensifs et Réanimation Néonatals, Pôle Enfants-néonatologie, Maternité régionale Universitaire, Nancy, France
| | - J-M Jellimann
- : Soins Intensifs et Réanimation Néonatals, Pôle Enfants-néonatologie, Maternité régionale Universitaire, Nancy, France
| | - A Grandmougin
- : Service de radiologie, Hôpital d'enfants, CHRU de Nancy, France
| | - M Bronner
- : Laboratoire de Génétique, Pôle Laboratoires, CHRU de Nancy, France
| | - L Lambert
- : Inserm U1256, Université de Lorraine, France; : Service de Génétique Clinique, Pôle Enfants, CHRU de Nancy, France
| | - C Bonnet
- : Laboratoire de Génétique, Pôle Laboratoires, CHRU de Nancy, France; : Service de Génétique Clinique, Pôle Enfants, CHRU de Nancy, France.
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Kastriti ME, Faure L, Von Ahsen D, Bouderlique TG, Boström J, Solovieva T, Jackson C, Bronner M, Meijer D, Hadjab S, Lallemend F, Erickson A, Kaucka M, Dyachuk V, Perlmann T, Lahti L, Krivanek J, Brunet J, Fried K, Adameyko I. Schwann cell precursors represent a neural crest-like state with biased multipotency. EMBO J 2022; 41:e108780. [PMID: 35815410 PMCID: PMC9434083 DOI: 10.15252/embj.2021108780] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [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: 05/20/2021] [Revised: 06/14/2022] [Accepted: 06/15/2022] [Indexed: 12/29/2022] Open
Abstract
Schwann cell precursors (SCPs) are nerve-associated progenitors that can generate myelinating and non-myelinating Schwann cells but also are multipotent like the neural crest cells from which they originate. SCPs are omnipresent along outgrowing peripheral nerves throughout the body of vertebrate embryos. By using single-cell transcriptomics to generate a gene expression atlas of the entire neural crest lineage, we show that early SCPs and late migratory crest cells have similar transcriptional profiles characterised by a multipotent "hub" state containing cells biased towards traditional neural crest fates. SCPs keep diverging from the neural crest after being primed towards terminal Schwann cells and other fates, with different subtypes residing in distinct anatomical locations. Functional experiments using CRISPR-Cas9 loss-of-function further show that knockout of the common "hub" gene Sox8 causes defects in neural crest-derived cells along peripheral nerves by facilitating differentiation of SCPs towards sympathoadrenal fates. Finally, specific tumour populations found in melanoma, neurofibroma and neuroblastoma map to different stages of SCP/Schwann cell development. Overall, SCPs resemble migrating neural crest cells that maintain multipotency and become transcriptionally primed towards distinct lineages.
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Affiliation(s)
- Maria Eleni Kastriti
- Department of Molecular Neuroscience, Center for Brain ResearchMedical University ViennaViennaAustria
- Department of Physiology and PharmacologyKarolinska InstitutetStockholmSweden
- Department of Neuroimmunology, Center for Brain ResearchMedical University ViennaViennaAustria
| | - Louis Faure
- Department of Neuroimmunology, Center for Brain ResearchMedical University ViennaViennaAustria
| | - Dorothea Von Ahsen
- Department of Neuroimmunology, Center for Brain ResearchMedical University ViennaViennaAustria
| | | | - Johan Boström
- Department of Neuroimmunology, Center for Brain ResearchMedical University ViennaViennaAustria
| | - Tatiana Solovieva
- Division of Biology and Biological EngineeringCalifornia Institute of TechnologyPasadenaCAUSA
| | - Cameron Jackson
- Division of Biology and Biological EngineeringCalifornia Institute of TechnologyPasadenaCAUSA
| | - Marianne Bronner
- Division of Biology and Biological EngineeringCalifornia Institute of TechnologyPasadenaCAUSA
| | - Dies Meijer
- Centre for Discovery Brain SciencesUniversity of EdinburghEdinburghUK
| | - Saida Hadjab
- Department of NeuroscienceKarolinska InstitutetStockholmSweden
| | | | - Alek Erickson
- Department of Physiology and PharmacologyKarolinska InstitutetStockholmSweden
| | - Marketa Kaucka
- Max Planck Institute for Evolutionary BiologyPlönGermany
| | | | - Thomas Perlmann
- Department of Cell and Molecular BiologyKarolinska InstitutetStockholmSweden
| | - Laura Lahti
- Department of Cell and Molecular BiologyKarolinska InstitutetStockholmSweden
| | - Jan Krivanek
- Department of Histology and Embryology, Faculty of MedicineMasaryk UniversityBrnoCzech Republic
| | - Jean‐Francois Brunet
- Institut de Biologie de l'ENS (IBENS), INSERM, CNRS, École Normale SupérieurePSL Research UniversityParisFrance
| | - Kaj Fried
- Department of NeuroscienceKarolinska InstitutetStockholmSweden
| | - Igor Adameyko
- Department of Physiology and PharmacologyKarolinska InstitutetStockholmSweden
- Department of Neuroimmunology, Center for Brain ResearchMedical University ViennaViennaAustria
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Solovieva T, Bronner M. Reprint of: Schwann cell precursors: Where they come from and where they go. Cells Dev 2021; 168:203729. [PMID: 34456178 DOI: 10.1016/j.cdev.2021.203729] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2021] [Revised: 04/29/2021] [Accepted: 04/30/2021] [Indexed: 10/20/2022]
Abstract
Schwann cell precursors (SCPs) are a transient population in the embryo, closely associated with nerves along which they migrate into the periphery of the body. Long considered to be progenitors that only form Schwann cells-the myelinating cells of nerves, current evidence suggests that SCPs have much broader developmental potential. Indeed, different cell marking techniques employed over the past 20 years have identified multiple novel SCP derivatives throughout the body. It is now clear that SCPs represent a multipotent progenitor population, which also display a level of plasticity in response to injury. Moreover, they originate from multiple origins in the embryo and may reflect several distinct subpopulations in terms of molecular identity and fate. Here we review SCP origins, derivatives and plasticity in development, growth and repair.
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Affiliation(s)
- Tatiana Solovieva
- Division of Biology and Biological Engineering, California Institute of Technology, United States of America.
| | - Marianne Bronner
- Division of Biology and Biological Engineering, California Institute of Technology, United States of America
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Solovieva T, Bronner M. Schwann cell precursors: Where they come from and where they go. Cells Dev 2021; 166:203686. [PMID: 33994354 DOI: 10.1016/j.cdev.2021.203686] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2021] [Revised: 04/29/2021] [Accepted: 04/30/2021] [Indexed: 11/30/2022]
Abstract
Schwann cell precursors (SCPs) are a transient population in the embryo, closely associated with nerves along which they migrate into the periphery of the body. Long considered to be progenitors that only form Schwann cells-the myelinating cells of nerves, current evidence suggests that SCPs have much broader developmental potential. Indeed, different cell marking techniques employed over the past 20 years have identified multiple novel SCP derivatives throughout the body. It is now clear that SCPs represent a multipotent progenitor population, which also display a level of plasticity in response to injury. Moreover, they originate from multiple origins in the embryo and may reflect several distinct subpopulations in terms of molecular identity and fate. Here we review SCP origins, derivatives and plasticity in development, growth and repair.
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Affiliation(s)
- Tatiana Solovieva
- Division of Biology and Biological Engineering, California Institute of Technology, United States of America.
| | - Marianne Bronner
- Division of Biology and Biological Engineering, California Institute of Technology, United States of America
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Affiliation(s)
- Jose Chacon
- California State University, NorthridgeLos AngelesCA
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Yang J, Antin P, Berx G, Blanpain C, Brabletz T, Bronner M, Campbell K, Cano A, Casanova J, Christofori G, Dedhar S, Derynck R, Ford HL, Fuxe J, García de Herreros A, Goodall GJ, Hadjantonakis AK, Huang RYJ, Kalcheim C, Kalluri R, Kang Y, Khew-Goodall Y, Levine H, Liu J, Longmore GD, Mani SA, Massagué J, Mayor R, McClay D, Mostov KE, Newgreen DF, Nieto MA, Puisieux A, Runyan R, Savagner P, Stanger B, Stemmler MP, Takahashi Y, Takeichi M, Theveneau E, Thiery JP, Thompson EW, Weinberg RA, Williams ED, Xing J, Zhou BP, Sheng G. Guidelines and definitions for research on epithelial-mesenchymal transition. Nat Rev Mol Cell Biol 2020; 21:341-352. [PMID: 32300252 PMCID: PMC7250738 DOI: 10.1038/s41580-020-0237-9] [Citation(s) in RCA: 1015] [Impact Index Per Article: 253.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/11/2020] [Indexed: 02/06/2023]
Abstract
Epithelial–mesenchymal transition (EMT) encompasses dynamic changes in cellular organization from epithelial to mesenchymal phenotypes, which leads to functional changes in cell migration and invasion. EMT occurs in a diverse range of physiological and pathological conditions and is driven by a conserved set of inducing signals, transcriptional regulators and downstream effectors. With over 5,700 publications indexed by Web of Science in 2019 alone, research on EMT is expanding rapidly. This growing interest warrants the need for a consensus among researchers when referring to and undertaking research on EMT. This Consensus Statement, mediated by ‘the EMT International Association’ (TEMTIA), is the outcome of a 2-year-long discussion among EMT researchers and aims to both clarify the nomenclature and provide definitions and guidelines for EMT research in future publications. We trust that these guidelines will help to reduce misunderstanding and misinterpretation of research data generated in various experimental models and to promote cross-disciplinary collaboration to identify and address key open questions in this research field. While recognizing the importance of maintaining diversity in experimental approaches and conceptual frameworks, we emphasize that lasting contributions of EMT research to increasing our understanding of developmental processes and combatting cancer and other diseases depend on the adoption of a unified terminology to describe EMT. In this Consensus Statement, the authors (on behalf of the EMT International Association) propose guidelines to define epithelial–mesenchymal transition, its phenotypic plasticity and the associated multiple intermediate epithelial–mesenchymal cell states. Clarification of nomenclature and definitions will help reduce misinterpretation of research data generated in different experimental model systems and promote cross-disciplinary collaboration.
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Affiliation(s)
- Jing Yang
- Departments of Pharmacology and Pediatrics, Moores Cancer Center, University of California, San Diego, La Jolla, CA, USA.
| | - Parker Antin
- Department of Cellular and Molecular Medicine, University of Arizona, Tucson, AZ, USA
| | - Geert Berx
- Molecular and Cellular Oncology Lab, Department of Biomedical Molecular Biology, Ghent University, Cancer Research Institute Ghent (CRIG), VIB Center for Inflammation Research, Ghent, Belgium
| | - Cédric Blanpain
- Laboratory of Stem Cells and Cancer, Université Libre de Bruxelles, Bruxelles, Belgium
| | - Thomas Brabletz
- Department of Experimental Medicine 1, Nikolaus-Fiebiger-Center for Molecular Medicine, Friedrich-Alexander-University Erlangen-Nürnberg, Erlangen, Germany
| | - Marianne Bronner
- Division of Biology and Biological Engineering, California Institute of Technology, Pasadena, CA, USA
| | - Kyra Campbell
- Department of Biomedical Science and Bateson Centre, University of Sheffield, Sheffield, UK
| | - Amparo Cano
- Departamento de Bioquímica, Universidad Autónoma de Madrid (UAM), Instituto de Investigaciones Biomédicas 'Alberto Sols' (CSIC-UAM), IdiPAZ & Centro de Investigación Biomédica en Red de Cáncer (CIBERONC), Madrid, Spain
| | - Jordi Casanova
- Institute for Research in Biomedicine (IRB Barcelona), Barcelona Institute of Science and Technology/Institut de Biologia Molecular de Barcelona (IBMB-CSIC), Barcelona, Spain
| | | | - Shoukat Dedhar
- Department of Biochemistry and Molecular Biology, University of British Columbia and British Columbia Cancer Research Centre, Vancouver, BC, Canada
| | - Rik Derynck
- Departments of Cell and Tissue Biology, and Anatomy, University of California at San Francisco, San Francisco, CA, USA
| | - Heide L Ford
- Department of Pharmacology, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Jonas Fuxe
- Department of Laboratory Medicine (LABMED), Division of Pathology, Karolinska University Hospital and Department of Microbiology, Tumor and Cell Biology (MTC), Karolinska Institutet, Stockholm, Sweden
| | - Antonio García de Herreros
- Programa de Recerca en Càncer, Institut Hospital del Mar d'Investigacions Mèdiques (IMIM) and Departament de Ciències Experimentals i de la Salut, Universitat Pompeu Fabra, Barcelona, Spain
| | - Gregory J Goodall
- Centre for Cancer Biology, An alliance of SA Pathology and University of South Australia, Adelaide, SA, Australia
| | - Anna-Katerina Hadjantonakis
- Developmental Biology Program, Sloan Kettering Institute, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Ruby Y J Huang
- School of Medicine, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Chaya Kalcheim
- Department of Medical Neurobiology, Institute for medical Research Israel-Canada and the Safra Center for Neurosciences, Hebrew University of Jerusalem, Hadassah Medical School, Jerusalem, Israel
| | - Raghu Kalluri
- Department of Cancer Biology, Metastasis Research Center, MD Anderson Cancer Center, Houston, TX, USA
| | - Yibin Kang
- Department of Molecular Biology, Princeton University, Princeton, NJ, USA
| | - Yeesim Khew-Goodall
- Centre for Cancer Biology, an Alliance of SA Pathology and the University of South Australia, Adelaide, SA, Australia
| | - Herbert Levine
- Department of Physics, Northeastern University, Boston, MA, USA
| | - Jinsong Liu
- Department of Anatomic Pathology, The Division of Pathology and Laboratory Medicine, University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Gregory D Longmore
- Department of Medicine (Oncology) and Department of Cell Biology and Physiology, ICCE Institute, Washington University, St. Louis, MO, USA
| | - Sendurai A Mani
- Department of Translational Molecular Pathology, University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Joan Massagué
- Cancer Biology and Genetics Program, Sloan Kettering Institute, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Roberto Mayor
- Department of Cell and Developmental Biology, University College London, London, UK
| | - David McClay
- Department of Biology, Duke University, Durham, NC, USA
| | - Keith E Mostov
- Departments of Anatomy and Biochemistry/Biophysics, University of California, San Francisco, School of Medicine, San Francisco, CA, USA
| | - Donald F Newgreen
- Murdoch Children's Research Institute, Royal Children's Hospital, Parkville, VIC, Australia
| | - M Angela Nieto
- Instituto de Neurociencias (CSIC-UMH) Avda Ramon y Cajal s/n, Sant Joan d´Alacant, Spain
| | - Alain Puisieux
- Université Claude Bernard Lyon 1, INSERM 1052, CNRS 5286, Centre Léon Bérard, Cancer Research Center of Lyon, Lyon, France.,Institut Curie, PSL Research University, Paris, France
| | - Raymond Runyan
- Department of Cellular and Molecular Medicine, University of Arizona, Tucson, AZ, USA
| | - Pierre Savagner
- INSERM UMR 1186, Integrative Tumor Immunology and Genetic Oncology, Gustave Roussy, University Paris-Saclay, Villejuif, France
| | - Ben Stanger
- Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Marc P Stemmler
- Department of Experimental Medicine 1, Nikolaus-Fiebiger-Center for Molecular Medicine, Friedrich-Alexander-University Erlangen-Nürnberg, Erlangen, Germany
| | - Yoshiko Takahashi
- Department of Zoology, Graduate School of Science, Kyoto University, Kyoto, Japan
| | | | - Eric Theveneau
- Centre de Biologie du Développement (CBD), Centre de Biologie Intégrative (CBI), Université de Toulouse, CNRS, UPS, Toulouse, France
| | - Jean Paul Thiery
- Guangzhou Regenerative Medicine and Health, Guangdong Laboratory, Guangzhou, China
| | - Erik W Thompson
- School of Biomedical Sciences and Institute of Health and Biomedical Innovation, Queensland University of Technology, Translational Research Institute, Woolloongabba, QLD, Australia
| | - Robert A Weinberg
- Whitehead Institute for Biomedical Research, Department of Biology, MIT Ludwig Center for Molecular Oncology, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Elizabeth D Williams
- Australian Prostate Cancer Research Centre-Queensland (APCRC-Q) and Queensland Bladder Cancer Initiative (QBCI), School of Biomedical Sciences and Institute of Health and Biomedical Innovation, Queensland University of Technology, Woolloongabba, QLD, Australia
| | - Jianhua Xing
- Department of Computational and Systems Biology and UPMC-Hillman Cancer Center, University of Pittsburgh, Pittsburgh, PA, USA
| | - Binhua P Zhou
- Department of Molecular and Cellular Biochemistry and UK Markey Cancer Center, University of Kentucky College of Medicine, Lexington, KY, USA
| | - Guojun Sheng
- International Research Center for Medical Sciences (IRCMS), Kumamoto University, Kumamoto, Japan.
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Prummel KD, Hess C, Nieuwenhuize S, Parker HJ, Rogers KW, Kozmikova I, Racioppi C, Brombacher EC, Czarkwiani A, Knapp D, Burger S, Chiavacci E, Shah G, Burger A, Huisken J, Yun MH, Christiaen L, Kozmik Z, Müller P, Bronner M, Krumlauf R, Mosimann C. A conserved regulatory program initiates lateral plate mesoderm emergence across chordates. Nat Commun 2019; 10:3857. [PMID: 31451684 PMCID: PMC6710290 DOI: 10.1038/s41467-019-11561-7] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2019] [Accepted: 07/22/2019] [Indexed: 01/06/2023] Open
Abstract
Cardiovascular lineages develop together with kidney, smooth muscle, and limb connective tissue progenitors from the lateral plate mesoderm (LPM). How the LPM initially emerges and how its downstream fates are molecularly interconnected remain unknown. Here, we isolate a pan-LPM enhancer in the zebrafish-specific draculin (drl) gene that provides specific LPM reporter activity from early gastrulation. In toto live imaging and lineage tracing of drl-based reporters captures the dynamic LPM emergence as lineage-restricted mesendoderm field. The drl pan-LPM enhancer responds to the transcription factors EomesoderminA, FoxH1, and MixL1 that combined with Smad activity drive LPM emergence. We uncover specific activity of zebrafish-derived drl reporters in LPM-corresponding territories of several chordates including chicken, axolotl, lamprey, Ciona, and amphioxus, revealing a universal upstream LPM program. Altogether, our work provides a mechanistic framework for LPM emergence as defined progenitor field, possibly representing an ancient mesodermal cell state that predates the primordial vertebrate embryo. Numerous tissues are derived from the lateral plate mesoderm (LPM) but how this is specified is unclear. Here, the authors identify a pan-LPM reporter activity found in the zebrafish draculin (drl) gene that also shows transgenic activity in LPM-corresponding territories of several chordates, including chicken, axolotl, lamprey, Ciona, and amphioxus.
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Affiliation(s)
- Karin D Prummel
- Institute of Molecular Life Sciences, University of Zurich, Zürich, 8057, Switzerland
| | - Christopher Hess
- Institute of Molecular Life Sciences, University of Zurich, Zürich, 8057, Switzerland
| | - Susan Nieuwenhuize
- Institute of Molecular Life Sciences, University of Zurich, Zürich, 8057, Switzerland
| | - Hugo J Parker
- Department of Anatomy and Cell Biology, Kansas University Medical Center, Kansas City, KS, 66160, USA.,Stowers Institute for Medical Research, Kansas City, MO, 64110, USA
| | - Katherine W Rogers
- Friedrich Miescher Laboratory of the Max Planck Society, Tübingen, 72076, Germany
| | - Iryna Kozmikova
- Institute of Molecular Genetics of the ASCR, Prague, 142 20, Czech Republic
| | - Claudia Racioppi
- Center for Developmental Genetics, Department of Biology, New York University, New York, NY, 10003, USA
| | - Eline C Brombacher
- Institute of Molecular Life Sciences, University of Zurich, Zürich, 8057, Switzerland
| | - Anna Czarkwiani
- TUD-CRTD Center for Regenerative Therapies Dresden, Dresden, 01307, Germany
| | - Dunja Knapp
- TUD-CRTD Center for Regenerative Therapies Dresden, Dresden, 01307, Germany
| | - Sibylle Burger
- Institute of Molecular Life Sciences, University of Zurich, Zürich, 8057, Switzerland
| | - Elena Chiavacci
- Institute of Molecular Life Sciences, University of Zurich, Zürich, 8057, Switzerland
| | - Gopi Shah
- Max Planck Institute of Molecular Cell Biology and Genetics, Dresden, 01307, Germany
| | - Alexa Burger
- Institute of Molecular Life Sciences, University of Zurich, Zürich, 8057, Switzerland
| | - Jan Huisken
- Max Planck Institute of Molecular Cell Biology and Genetics, Dresden, 01307, Germany.,Morgridge Institute for Research, Madison, WI, 53715, USA
| | - Maximina H Yun
- TUD-CRTD Center for Regenerative Therapies Dresden, Dresden, 01307, Germany.,Max Planck Institute of Molecular Cell Biology and Genetics, Dresden, 01307, Germany
| | - Lionel Christiaen
- Center for Developmental Genetics, Department of Biology, New York University, New York, NY, 10003, USA
| | - Zbynek Kozmik
- Institute of Molecular Genetics of the ASCR, Prague, 142 20, Czech Republic
| | - Patrick Müller
- Friedrich Miescher Laboratory of the Max Planck Society, Tübingen, 72076, Germany
| | - Marianne Bronner
- Division of Biology and Biological Engineering, California Institute of Technology, Pasadena, CA, 91125, USA
| | - Robb Krumlauf
- Department of Anatomy and Cell Biology, Kansas University Medical Center, Kansas City, KS, 66160, USA.,Stowers Institute for Medical Research, Kansas City, MO, 64110, USA
| | - Christian Mosimann
- Institute of Molecular Life Sciences, University of Zurich, Zürich, 8057, Switzerland.
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Diaz RE, Shylo NA, Roellig D, Bronner M, Trainor PA. Filling in the phylogenetic gaps: Induction, migration, and differentiation of neural crest cells in a squamate reptile, the veiled chameleon (Chamaeleo calyptratus). Dev Dyn 2019; 248:709-727. [DOI: 10.1002/dvdy.38] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2019] [Revised: 04/04/2019] [Accepted: 04/04/2019] [Indexed: 12/13/2022] Open
Affiliation(s)
- Raul E. Diaz
- Department of Biological Sciences, Southeastern Louisiana University Hammond Louisiana
- Natural History Museum of Los Angeles CountyDivision of Herpetology Los Angeles California
| | | | - Daniela Roellig
- Division of Biology and Biological Engineering, California Institute of Technology Pasadena California
| | - Marianne Bronner
- Division of Biology and Biological Engineering, California Institute of Technology Pasadena California
| | - Paul A. Trainor
- Stowers Institute for Medical Research Kansas City Missouri
- Department of Anatomy and Cell Biology, University of Kansas Medical Center Kansas City Kansas
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Bronner M. Commentary on Le Douarin, 1973 and 1974. Dev Biol 2019; 445:115-144. [DOI: 10.1016/j.ydbio.2018.12.011] [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: 11/29/2022]
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Murko C, Vieceli FM, Bronner M. Transcriptome dataset of trunk neural crest cells migrating along the ventral pathway of chick embryos. Data Brief 2018; 21:2547-2553. [PMID: 30761336 PMCID: PMC6288396 DOI: 10.1016/j.dib.2018.11.109] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2018] [Revised: 11/14/2018] [Accepted: 11/20/2018] [Indexed: 11/28/2022] Open
Abstract
We present a transcriptome dataset generated from migratory chick trunk neural crest cells, which are destined to form components of the peripheral nervous system. Using the Sox10E1 enhancer, which specifically labels neural crest cells migrating on the trunk ventral pathway, we performed fluorescence activated cell sorting (FACS) of electroporated embryos to obtain a pure population of these cells for library preparation and Illumina sequencing. The results provide a list of genes that are enriched in the trunk neural crest. To validate the data, we performed in situ hybridization to visualize expression of selected transcripts.
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Affiliation(s)
- Christina Murko
- Division of Biology and Biological Engineering, California Institute of Technology, Pasadena, CA 91125, USA
- Center for Anatomy and Cell Biology, Medical University of Vienna, Vienna, Austria
| | - Felipe Monteleone Vieceli
- Division of Biology and Biological Engineering, California Institute of Technology, Pasadena, CA 91125, USA
| | - Marianne Bronner
- Division of Biology and Biological Engineering, California Institute of Technology, Pasadena, CA 91125, USA
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Huang M, Zheng T, Guo J, Sperring C, Miller M, McHenry L, Zhen Q, Moriarity B, Bronner M, Conklin B, Largaespada D, Maris J, Matthay K, Weiss W. TMOD-09. HUMAN PLURIPOTENT STEM CELL-BASED MODELS OF NEUROBLASTOMA. Neuro Oncol 2017. [DOI: 10.1093/neuonc/nox168.1048] [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: 11/14/2022] Open
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14
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Li Y, Li A, Junge J, Bronner M. Planar cell polarity signaling coordinates oriented cell division and cell rearrangement in clonally expanding growth plate cartilage. eLife 2017; 6. [PMID: 28994649 PMCID: PMC5634781 DOI: 10.7554/elife.23279] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2016] [Accepted: 09/15/2017] [Indexed: 12/20/2022] Open
Abstract
Both oriented cell divisions and cell rearrangements are critical for proper embryogenesis and organogenesis. However, little is known about how these two cellular events are integrated. Here we examine the linkage between these processes in chick limb cartilage. By combining retroviral-based multicolor clonal analysis with live imaging, the results show that single chondrocyte precursors can generate both single-column and multi-column clones through oriented division followed by cell rearrangements. Focusing on single column formation, we show that this stereotypical tissue architecture is established by a pivot-like process between sister cells. After mediolateral cell division, N-cadherin is enriched in the post-cleavage furrow; then one cell pivots around the other, resulting in stacking into a column. Perturbation analyses demonstrate that planar cell polarity signaling enables cells to pivot in the direction of limb elongation via this N-cadherin-mediated coupling. Our work provides new insights into the mechanisms generating appropriate tissue architecture of limb skeleton.
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Affiliation(s)
- Yuwei Li
- Division of Biology and Biological Engineering, California Institute of Technology, Pasadena, United States
| | - Ang Li
- Department of Pathology, University of Southern California, Keck School of Medicine, Los Angeles, United States
| | - Jason Junge
- Translational Imaging Center, University of Southern California, Los Angeles, United States
| | - Marianne Bronner
- Division of Biology and Biological Engineering, California Institute of Technology, Pasadena, United States
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15
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Abstract
The neural crest is a uniquely vertebrate cell type and has been well studied in a number of model systems. Zebrafish, Xenopus and chick embryos largely show consistent requirements for specific genes in early steps of neural crest development. By contrast, knockouts of homologous genes in the mouse often do not exhibit comparable early neural crest phenotypes. In this Spotlight article, we discuss these species-specific differences, suggest possible explanations for the divergent phenotypes in mouse and urge the community to consider these issues and the need for further research in complementary systems.
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Affiliation(s)
- Elias H Barriga
- Department of Cell and Developmental Biology, University College London, Gower Street, London WC1E 6BT, UK
| | - Paul A Trainor
- Stowers Institute for Medical Research, Kansas City, MO 64110, USA Department of Anatomy and Cell Biology, University of Kansas Medical Centre, Kansas City, KS 66160, USA
| | - Marianne Bronner
- Division of Biology, California Institute of Technology, Pasadena, CA 91125, USA
| | - Roberto Mayor
- Department of Cell and Developmental Biology, University College London, Gower Street, London WC1E 6BT, UK
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16
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Parker HJ, Sauka-Spengler T, Bronner M, Elgar G. A reporter assay in lamprey embryos reveals both functional conservation and elaboration of vertebrate enhancers. PLoS One 2014; 9:e85492. [PMID: 24416417 PMCID: PMC3887057 DOI: 10.1371/journal.pone.0085492] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [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: 08/19/2013] [Accepted: 12/05/2013] [Indexed: 11/27/2022] Open
Abstract
The sea lamprey is an important model organism for investigating the evolutionary origins of vertebrates. As more vertebrate genome sequences are obtained, evolutionary developmental biologists are becoming increasingly able to identify putative gene regulatory elements across the breadth of the vertebrate taxa. The identification of these regions makes it possible to address how changes at the genomic level have led to changes in developmental gene regulatory networks and ultimately to the evolution of morphological diversity. Comparative genomics approaches using sea lamprey have already predicted a number of such regulatory elements in the lamprey genome. Functional characterisation of these sequences and other similar elements requires efficient reporter assays in lamprey. In this report, we describe the development of a transient transgenesis method for lamprey embryos. Focusing on conserved non-coding elements (CNEs), we use this method to investigate their functional conservation across the vertebrate subphylum. We find instances of both functional conservation and lineage-specific functional evolution of CNEs across vertebrates, emphasising the utility of functionally testing homologous CNEs in their host species.
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Affiliation(s)
- Hugo J. Parker
- Division of Systems Biology, Medical Research Council National Institute for Medical Research, London, United Kingdom
| | - Tatjana Sauka-Spengler
- Division of Biology, California Institute of Technology, Pasadena, California, United States of America
| | - Marianne Bronner
- Division of Biology, California Institute of Technology, Pasadena, California, United States of America
| | - Greg Elgar
- Division of Systems Biology, Medical Research Council National Institute for Medical Research, London, United Kingdom
- * E-mail:
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17
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Luporsi E, Bronner M, Lesur A, Saint-Dizier D, Sokolowska J, Mansuy L, Jonveaux P. Abstract P2-12-02: Characteristics of the BRCA mutation profile of a population of patients with triple negative breast cancer. Cancer Res 2013. [DOI: 10.1158/0008-5472.sabcs13-p2-12-02] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Purpose: This study assessed the relation between age, family history (breast and/or ovarian cancer) and BRCA1 and BRCA2 mutations prevalence in a cohort of patients with triple-negative breast cancer (BC).
Methods: We identified in our database 218 patients (pts) with triple negative (TN) breast carcinoma (defined as <1% estrogen and progesterone and HER-2 not over expressed). All pts gave consent for BRCA1 and BRCA2 screening (HRM/sequencing of exons and intron-exon junctions and large rearrangement analysis). In this cohort, we noted family history of breast only, ovarian only or both breast and ovarian cancer.
We compared this cohort to 498 pts with a family history of breast cancer (non triple-negative tumors) and/or ovarian cancer that were also screened for BRCA1/2 mutations.
Results: In the TN cohort, 146 tests were realized, 72 are still on going. We identified 31 deleterious mutations (21.2%) in BRCA1 and 3 (2.1%) in BRCA2. In 100 cases (68.5%), we found no BRCA mutations and in 13 cases, we found Variants of Unknown Signification (VUS) (8.9%) (5 (3.4%) in BRCA1 and 8 (5.5%) in BRCA2).
Concerning family history, 74 pts belonged to families with a history of breast cancer only, 3 pts to families with ovarian cancer only and 10 pts to families with both breast and ovarian cancer. Fifty nine pts were screened on the basis of a TN tumor at age ≤ 50 years old with no other family history of breast or ovarian cancer. The mean age at first diagnosis for all the TN cohort tested is 45.4 ± 10.2 (min 26 - max 76). The mean age of patients for whom a mutation was identified is : 40.6 ± 8.7 for BRCA1 (min 29 - max 69), 45.7 ± 8.5 for BRCA2 (min 37 - max 54). The mean age of patients for whom no BRCA mutation was identified is 46.8 ±10.2 (min 26 - max 76). All patients studied were symptomatic.
In the “control cohort”, we identified 26 deleterious mutations (5.2%) in BRCA1 and 28 (5.6%) in BRCA2. In 408 cases (81.9%), we found no BRCA mutations and in 36 cases, we found Variants of Unknown Signification (VUS) (7.2%) (8 (1.6%) in BRCA1 and 28 (5.6%) in BRCA2).
We have in our region (Lorraine), a recurrent BRCA1 mutation with founder-effect (c.3481_3491del11 p.Glu1161Phe), the prevalence of which we evaluated in both cohorts.
Conclusions:
Among the TN cohort, mean age for BRCA1 mutation is lower than for BRCA2 (40.6 ± 8.7 vs 45.7 ± 8.5, non-significant results). By comparing BRCA mutation frequency between the 2 cohorts, we could conclude that:
- BRCA mutations are more frequent in the TN cohort : 23.3% vs 10.8% (p = 0.035)
- Among these, there are more BRCA1 mutations in the TN cohort : 21.2% vs 5.2% and less BRCA2 mutations : 2.1% vs 5.6% (p = 0.02)
Moreover, according to our preliminary results, this particular mutation seems to be more represented among the mutations of the TN cohort (3.5 folds) but we still have to test its impact concerning TN tumors.
Citation Information: Cancer Res 2013;73(24 Suppl): Abstract nr P2-12-02.
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Affiliation(s)
- E Luporsi
- ICL Alexis Vautrin, Vandoeuvre les nancy, France; Laboratoire de Génétique - CHU de Brabois, Vandoeuvre les nancy, France
| | - M Bronner
- ICL Alexis Vautrin, Vandoeuvre les nancy, France; Laboratoire de Génétique - CHU de Brabois, Vandoeuvre les nancy, France
| | - A Lesur
- ICL Alexis Vautrin, Vandoeuvre les nancy, France; Laboratoire de Génétique - CHU de Brabois, Vandoeuvre les nancy, France
| | - D Saint-Dizier
- ICL Alexis Vautrin, Vandoeuvre les nancy, France; Laboratoire de Génétique - CHU de Brabois, Vandoeuvre les nancy, France
| | - J Sokolowska
- ICL Alexis Vautrin, Vandoeuvre les nancy, France; Laboratoire de Génétique - CHU de Brabois, Vandoeuvre les nancy, France
| | - L Mansuy
- ICL Alexis Vautrin, Vandoeuvre les nancy, France; Laboratoire de Génétique - CHU de Brabois, Vandoeuvre les nancy, France
| | - P Jonveaux
- ICL Alexis Vautrin, Vandoeuvre les nancy, France; Laboratoire de Génétique - CHU de Brabois, Vandoeuvre les nancy, France
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Vieceli FM, Simões-Costa M, Turri JA, Kanno T, Bronner M, Yan CYI. The transcription factor chicken Scratch2 is expressed in a subset of early postmitotic neural progenitors. Gene Expr Patterns 2013; 13:189-96. [PMID: 23570883 DOI: 10.1016/j.gep.2013.03.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2012] [Revised: 03/19/2013] [Accepted: 03/21/2013] [Indexed: 10/27/2022]
Abstract
Scratch proteins are members of the Snail superfamily which have been shown to regulate invertebrate neural development. However, in vertebrates, little is known about the function of Scratch or its relationship to other neural transcription factors. We report the cloning of chicken Scratch2 (cScrt2) and describe its expression pattern in the chick embryo from HH15 through HH29. cScrt2 was detected in cranial ganglia, the nasal placode and neural tube. At all stages examined, cScrt2 expression is only detected within a subregion of the intermediate zone of the neural tube. cScrt2 is also expressed in the developing dorsal root ganglia from HH22-23 onwards and becomes limited to its dorsal medial domain at HH29. phospho-Histone H3 and BrdU-labeling revealed that the cScrt2 expression domain is located immediately external to the proliferative region. In contrast, cScrt2 domain overlapped almost completely with that of the postmitotic neural transcription factor NeuroM/Ath3/NEUROD4. Together, these data define cScrt2-positive cells as a subset of immediately postmitotic neural progenitors. Previous data has shown that Scrt2 is a repressor of E-box-driven transcription whereas NeuroM is an E-box-transactivator. In light of these data, the co-localization detected here suggests that Scrt2 and NeuroM may have opposing roles during definition of neural subtypes.
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19
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Grandval P, Baert-Desurmont S, Bonnet F, Bronner M, Buisine MP, Colas C, Noguchi T, North MO, Rey JM, Tinat J, Toulas C, Olschwang S. Colon-specific phenotype in Lynch syndrome associated with EPCAM deletion. Clin Genet 2012; 82:97-9. [PMID: 22243433 DOI: 10.1111/j.1399-0004.2011.01826.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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20
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Parker HJ, Piccinelli P, Sauka-Spengler T, Bronner M, Elgar G. Ancient Pbx-Hox signatures define hundreds of vertebrate developmental enhancers. BMC Genomics 2011; 12:637. [PMID: 22208168 PMCID: PMC3261376 DOI: 10.1186/1471-2164-12-637] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2011] [Accepted: 12/30/2011] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Gene regulation through cis-regulatory elements plays a crucial role in development and disease. A major aim of the post-genomic era is to be able to read the function of cis-regulatory elements through scrutiny of their DNA sequence. Whilst comparative genomics approaches have identified thousands of putative regulatory elements, our knowledge of their mechanism of action is poor and very little progress has been made in systematically de-coding them. RESULTS Here, we identify ancient functional signatures within vertebrate conserved non-coding elements (CNEs) through a combination of phylogenetic footprinting and functional assay, using genomic sequence from the sea lamprey as a reference. We uncover a striking enrichment within vertebrate CNEs for conserved binding-site motifs of the Pbx-Hox hetero-dimer. We further show that these predict reporter gene expression in a segment specific manner in the hindbrain and pharyngeal arches during zebrafish development. CONCLUSIONS These findings evoke an evolutionary scenario in which many CNEs evolved early in the vertebrate lineage to co-ordinate Hox-dependent gene-regulatory interactions that pattern the vertebrate head. In a broader context, our evolutionary analyses reveal that CNEs are composed of tightly linked transcription-factor binding-sites (TFBSs), which can be systematically identified through phylogenetic footprinting approaches. By placing a large number of ancient vertebrate CNEs into a developmental context, our findings promise to have a significant impact on efforts toward de-coding gene-regulatory elements that underlie vertebrate development, and will facilitate building general models of regulatory element evolution.
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Affiliation(s)
- Hugo J Parker
- Division of Systems Biology, MRC National Institute for Medical Research, The Ridgeway, Mill Hill, London NW7 1AA, UK
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21
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Jayasena CS, Trinh LA, Bronner M. Live imaging of endogenous periodic tryptophan protein 2 gene homologue during zebrafish development. Dev Dyn 2011; 240:2578-83. [PMID: 21954116 DOI: 10.1002/dvdy.22744] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/30/2011] [Indexed: 11/10/2022] Open
Abstract
Yeast Periodic tryptophan protein 2 gene (Pwp2) is involved in ribosome biogenesis and has been implicated in regulation of the cell cycle in yeast. Here, we report a zebrafish protein-trap line that produces fluorescently tagged Periodic tryptophan protein 2 gene homologue (Pwp2h) protein, which can be dynamically tracked in living fish at subcellular resolution. We identified both full-length zebrafish Pwp2h and a short variant. The expression results show that Pwp2h is present in numerous sites in the early developing embryo, but later is restricted to highly proliferative regions, including the forebrain ventricular zone and endoderm-derived organs in the early larval stage. At the subcellular level, Pwp2h protein appears to be localized to the region of the nucleolus consistent with its presumed function in ribosomal RNA synthesis. This Pwp2h protein trap line offers a powerful tool to study the link between ribosome biogenesis and cell cycle progression during vertebrate development.
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Affiliation(s)
- Chathurani S Jayasena
- Division of Biology 139-74, California Institute of Technology, Pasadena, California 91125, USA
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22
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Betancur P, Sauka-Spengler T, Bronner M. A Sox10 enhancer element common to the otic placode and neural crest is activated by tissue-specific paralogs. Development 2011; 138:3689-98. [PMID: 21775416 DOI: 10.1242/dev.057836] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
The otic placode, a specialized region of ectoderm, gives rise to components of the inner ear and shares many characteristics with the neural crest, including expression of the key transcription factor Sox10. Here, we show that in avian embryos, a highly conserved cranial neural crest enhancer, Sox10E2, also controls the onset of Sox10 expression in the otic placode. Interestingly, we show that different combinations of paralogous transcription factors (Sox8, Pea3 and cMyb versus Sox9, Ets1 and cMyb) are required to mediate Sox10E2 activity in the ear and neural crest, respectively. Mutating their binding motifs within Sox10E2 greatly reduces enhancer activity in the ear. Moreover, simultaneous knockdown of Sox8, Pea3 and cMyb eliminates not only the enhancer-driven reporter expression, but also the onset of endogenous Sox10 expression in the ear. Rescue experiments confirm that the specific combination of Myb together with Sox8 and Pea3 is responsible for the onset of Sox10 expression in the otic placode, as opposed to Myb plus Sox9 and Ets1 for neural crest Sox10 expression. Whereas SUMOylation of Sox8 is not required for the initial onset of Sox10 expression, it is necessary for later otic vesicle formation. This new role of Sox8, Pea3 and cMyb in controlling Sox10 expression via a common otic/neural crest enhancer suggests an evolutionarily conserved function for the combination of paralogous transcription factors in these tissues of distinct embryological origin.
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Affiliation(s)
- Paola Betancur
- Division of Biology 139-74, California Institute of Technology, Pasadena, CA 91125, USA
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23
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Jayasena CS, Trinh LA, Bronner M. Live imaging of endogenous Collapsin response mediator protein-1 expression at subcellular resolution during zebrafish nervous system development. Gene Expr Patterns 2011; 11:395-400. [PMID: 21628002 DOI: 10.1016/j.gep.2011.05.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2011] [Revised: 05/16/2011] [Accepted: 05/17/2011] [Indexed: 11/29/2022]
Abstract
Collapsin response mediator proteins (CRMPs) are cytosolic phosphoproteins that are functionally important during vertebrate development. We have generated a zebrafish gene trap line that produces fluorescently tagged Crmp1 protein, which can be dynamically tracked in living fish at subcellular resolution. The results show that Crmp1 is expressed in numerous sites in the developing nervous system. Early expression is apparent in the forebrain, epiphysis, optic tectum and the developing spinal cord. In the larval brain, Crmp1 is expressed in several distinct brain regions, such as the telencephalon, habenula and cerebellum. In addition, it is expressed in the spinal cord in a manner that persists in the larva. The results suggest that this Crmp1 protein trap line offers a powerful tool to track selected neuronal populations at high resolution.
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24
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Abstract
The trigeminal ganglion is the largest of the cranial ganglia and responsible for transmitting sensory information for much of the face. The cell surface glycoprotein CD151 is an early marker of the trigeminal placode, the precursor to the ganglion. Here, we investigate the role of CD151 during specification of trigeminal placode cells in the developing chicken embryo. Expression of the transcription factor Pax3, the earliest known marker of the trigeminal placode, briefly precedes that of CD151, but they then subsequently overlap in the trigeminal placode. Loss of CD151 protein dramatically decreases the number of Pax3+ placode cells in Stage 13-14 embryos, leading to loss of ophthalmic trigeminal neurons by Stages 16 and 17. Although the initial size of the Pax3 population is similar to that in controls, the number of Pax3+ cells decreases with time without alterations in cell death or proliferation. This suggests a role for CD151 in maintenance of the specification state in the trigeminal placode, uncovering the first known role for a tetraspanin in a developmental system.
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25
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26
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Ezin AM, Sechrist JW, Zah A, Bronner M, Fraser SE. Early regulative ability of the neuroepithelium to form cardiac neural crest. Dev Biol 2010; 349:238-49. [PMID: 21047505 DOI: 10.1016/j.ydbio.2010.10.032] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2010] [Revised: 10/26/2010] [Accepted: 10/26/2010] [Indexed: 10/18/2022]
Abstract
The cardiac neural crest (arising from the level of hindbrain rhombomeres 6-8) contributes to the septation of the cardiac outflow tract and the formation of aortic arches. Removal of this population after neural tube closure results in severe septation defects in the chick, reminiscent of human birth defects. Because neural crest cells from other axial levels have regenerative capacity, we asked whether the cardiac neural crest might also regenerate at early stages in a manner that declines with time. Accordingly, we find that ablation of presumptive cardiac crest at stage 7, as the neural folds elevate, results in reformation of migrating cardiac neural crest by stage 13. Fate mapping reveals that the new population derives largely from the neuroepithelium ventral and rostral to the ablation. The stage of ablation dictates the competence of residual tissue to regulate and regenerate, as this capacity is lost by stage 9, consistent with previous reports. These findings suggest that there is a temporal window during which the presumptive cardiac neural crest has the capacity to regulate and regenerate, but this regenerative ability is lost earlier than in other neural crest populations.
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Affiliation(s)
- Akouavi M Ezin
- Division of Biology, Biological Imaging Center, Beckman Institute (139-74), California Institute of Technology, Pasadena, CA 91125, USA
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27
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28
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Yasui Y, Potter JD, Stanford JL, Rossing MA, Winget MD, Bronner M, Daling J. Breast cancer risk and "delayed" primary Epstein-Barr virus infection. Cancer Epidemiol Biomarkers Prev 2001; 10:9-16. [PMID: 11205495] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/19/2023] Open
Abstract
Parallel to its established causal association with both infectious mononucleosis (IM) and young adulthood Hodgkin disease (YAHD), we propose a hypothesis that "delayed" primary EBV infection (i.e., primary infection occurring during adolescence or adulthood) is associated with elevated breast cancer risk. We evaluated this hypothesis with two investigations, one descriptive and the other analytic. The descriptive study used international/United States cancer registry data to assess the association between incidence rates of breast cancer and those of YAHD. The incidence rates of the seemingly unrelated neoplasms were strongly correlated (correlation coefficients of 0.74 and 0.88 for international and United States data, respectively; these were higher than the correlation coefficients of YAHD with two other cancers that we considered). Populations with higher incidence rates corresponded to those with higher likelihood of delayed primary EBV infection. The analytical study was based on a population-based case-control study of breast cancer in middle-aged women. Age-adjusted odds ratios of breast cancer in women who reported a history of IM, relative to women who did not, increased monotonically from 0.55 [95% confidence interval (CI), 0.05-6.17] for women with 0-9 years of age at IM onset to 2.67 (CI, 1.04-6.89) for women with > or =25 years of age at IM onset (P = 0.016). An older age at tonsillectomy, another surrogate of delayed EBV exposure, was also associated with increased risk of breast cancer: odds ratios, 0.92 (CI, 0.57-1.48) and 1.76 (CI, 1.15-2.69) for women with tonsillectomy at 0-4 years of age and > or =15 years of age, respectively (P = 0.018). Adjusting for additional potential confounders did not modify the associations appreciably. The implications of the findings and a potential biological mechanism are presented.
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Affiliation(s)
- Y Yasui
- Cancer Prevention Research Program, Fred Hutchinson Cancer Research Center, Seattle, Washington 98109-1024, USA.
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29
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Parmentier JH, Schohn H, Bronner M, Ferrari L, Batt AM, Dauça M, Kremers P. Regulation of CYP4A1 and peroxisome proliferator-activated receptor alpha expression by interleukin-1beta, interleukin-6, and dexamethasone in cultured fetal rat hepatocytes. Biochem Pharmacol 1997; 54:889-98. [PMID: 9354589 DOI: 10.1016/s0006-2952(97)00256-6] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
The CYP4A1 isoenzyme induced in rodents by peroxisome proliferators is known to be repressed at a pretranslational level by interferon. Interleukin-1beta (IL-1beta) also reduces CYP4A1-related 12-laurate hydroxylase activity in cultured fetal rat hepatocytes after induction by clofibric acid. In this fetal hepatocyte model, IL-1beta and interleukin-6 (IL-6) were tested for their ability to reduce 12-laurate hydroxylase activity, CYP4A1 apoprotein content, and the CYP4A1 mRNA level. IL-1beta and IL-6 strongly diminished CYP4A1 activity and apoprotein and mRNA levels in a dose- and time-dependent manner. CYP4A1 expression is thus down-regulated at a pretranslational level by these cytokines. As it has been shown that the peroxisome proliferator-activated receptor alpha (PPAR alpha) mediates the induction of the CYP4A1 gene by a peroxisome proliferator, the capacity of IL-1beta or IL-6 to modulate the PPAR alpha mRNA level was tested. It was found that IL-1beta and IL-6 both repress the induction of PPAR alpha expression exerted by the combined action of clofibric acid and dexamethasone. However, even at the highest concentration (10 ng/mL) tested for both cytokines, IL-1beta as well as IL-6 failed to abolish the induction of CYP4A1 by dexamethasone. The mechanism of the protective effect of the synthetic glucocorticoid on CYP4A1 repression by interleukins is discussed.
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Affiliation(s)
- J H Parmentier
- Laboratoire de Chimie Médicale, CHU Sart-Tilman, Université de Liège, Belgium
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30
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Stehman-Breen CO, Psaty BM, Emerson S, Gretch D, Bronner M, Marsh C, Davis CL. Association of hepatitis C virus infection with mortality and graft survival in kidney-pancreas transplant recipients. Transplantation 1997; 64:281-6. [PMID: 9256188 DOI: 10.1097/00007890-199707270-00018] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
BACKGROUND Although most studies have not demonstrated decreased patient or graft survival in kidney-alone allograft recipients infected with hepatitis C virus (HCV), the impact of HCV infection on patient and graft survival in HCV-infected kidney-pancreas recipients has not been studied. METHODS We undertook a retrospective cohort analysis of 137 kidney-pancreas transplant recipients who were transplanted between January 1989 and May 1996. HCV infection was determined by a positive polymerase chain reaction. Relative risk of death and graft failure was calculated using the Cox proportional hazards model with time-dependent covariates. Relative risks were adjusted (aRR) to control for the number of OKT3-treated rejections and cytomegalovirus status of the recipient at the time of transplantation. RESULTS Mean length of follow-up was 30.4 months in the HCV-infected patients compared with 31.7 months in noninfected patients. Seven (5.1%) patients were infected with HCV before transplant, one (1%) relapsed after transplantation, and four (2.9%) acquired the infection after transplantation. The HCV-infected group had a 3.7-fold (95% confidence interval [CI], 1.0-13.5) increased risk of death after transplant compared with the HCV-negative group, with an aRR of 5.5 (95% CI, 1.5-20.0). Death in the HCV-infected group (n=3) was generally the result of liver failure and sepsis, whereas death for those in the uninfected group (n=11) was primarily of cardiovascular origin. Patients infected with HCV were 3.4-fold (95% CI, 1.1-10.1) more likely to develop kidney graft failure than HCV-negative patients with an aRR of 5.1 (95% CI, 1.7-15.4). The risk of pancreatic allograft failure was not significantly increased. CONCLUSIONS We conclude that HCV infection in kidney-pancreas transplant patients results in a significantly increased risk of kidney allograft failure and death.
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Affiliation(s)
- C O Stehman-Breen
- Department of Medicine, University of Washington, Seattle 98195, USA
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MacCalman CD, Furth EE, Omigbodun A, Bronner M, Coutifaris C, Strauss JF. Regulated expression of cadherin-11 in human epithelial cells: a role for cadherin-11 in trophoblast-endometrium interactions? Dev Dyn 1996; 206:201-11. [PMID: 8725287 DOI: 10.1002/(sici)1097-0177(199606)206:2<201::aid-aja9>3.0.co;2-m] [Citation(s) in RCA: 68] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Abstract
Cadherin-11 is a novel member of the cadherin supergene family. Cadherin-11 expression is localized to mesenchymal tissue and specific regions of the neural tube during mouse embryogenesis. Here we report that cadherin-11 is spatiotemporally expressed in the epithelial cells of the human placenta. Cadherin-11 mRNA levels were low in freshly isolated cytotrophoblast cells but increased as the cytotrophoblast cells aggregated and fused to form syncytiotrophoblast cells in vitro. The increase in cadherin-11 mRNA levels was concomitant with a decrease in E-cadherin expression. Cadherin-11 was localized to the syncytial trophoblast and extravillous cytotrophoblasts, but not the villous cytotrophoblasts of the human placenta by immunohistochemistry. As both of the former cell types have intimate interactions with the endometrium, we examined cadherin-11 expression in the human endometrium. Cadherin-11 was detected in the glandular and surface epithelium of the endometrium at all stages of the menstrual cycle. However, cadherin-11 was abundant only in the stroma in the late secretory stage of the menstrual cycle. The accumulation of cadherin-11 in the stroma correlated with decidualization. Taken together, our observations demonstrate that cadherin-11 is expressed in certain epithelial cell lineages and suggest the possibility that cadherin-11 plays an important role in mediating trophoblast-endometrium interactions.
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Affiliation(s)
- C D MacCalman
- Department of Obstetrics and Gynecology, University of Pennsylvania School of Medicine, Philadelphia 19104, USA
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Wittmaack FM, Gåfvels ME, Bronner M, Matsuo H, McCrae KR, Tomaszewski JE, Robinson SL, Strickland DK, Strauss JF. Localization and regulation of the human very low density lipoprotein/apolipoprotein-E receptor: trophoblast expression predicts a role for the receptor in placental lipid transport. Endocrinology 1995; 136:340-8. [PMID: 7828550 DOI: 10.1210/endo.136.1.7828550] [Citation(s) in RCA: 79] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
The very low density lipoprotein/apolipoprotein-E receptor (VLDLR) is the newest member of the low density lipoprotein receptor (LDLR) family. Very little is known about VLDLR localization and regulation. Immunohistochemical analysis of human placenta with a specific polyclonal antibody detected VLDLR in syncytiotrophoblast and intermediate trophoblast cells. VLDLR transcripts were also localized in these cells by in situ hybridization histochemistry. In addition, VLDLR messenger RNA (mRNA) was detected in villous core endothelial cells and cells appearing to be Hofbauer cells. Northern blot analysis of placenta revealed a 2.6-fold increase in VLDLR mRNA at term compared to that in the first trimester. The regulation of VLDLR expression was studied in JEG-3 and BeWo choriocarcinoma cells, two trophoblast-derived cell lines. Treatment of these cells with 8-bromo-cAMP caused a profound suppression of VLDLR message, whereas LDLR transcripts were increased. Incubation of JEG-3 cells with 25-hydroxycholesterol did not lead to sterol negative feedback on VLDLR gene expression, unlike LDLR mRNA, which declined markedly. Insulin (200 mg/L) up-regulated VLDLR message in JEG-3 cells 2-fold, as did the fibrate hypolipidemic drug, clofibric acid. We conclude that 1) VLDLR is expressed in human placental trophoblast cells in a pattern consistent with a role in placental lipid transport; 2) VLDLR expression is high at term relative to that in the first trimester; and 3) the trophoblast VLDLR is subject to down-regulation by cAMP and up-regulation by insulin and fibrate hypolipidemic drugs.
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Affiliation(s)
- F M Wittmaack
- Department of Obstetrics and Gynecology, University of Pennsylvania School of Medicine, Philadelphia 19104-6142
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Yeh IT, Bronner M, LiVolsi VA. Endometrial metaplasia of the uterine endocervix. Arch Pathol Lab Med 1993; 117:734-5. [PMID: 8323440] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
We report a case of endometrial metaplasia of the endocervix, which was associated with tubal and squamous metaplasias. The similarity to normal endometrial glands and its benign nature should be recognized, and over-diagnosis of endocervical glandular dysplasia should be avoided.
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Affiliation(s)
- I T Yeh
- Department of Pathology and Laboratory Medicine, University of Pennsylvania School of Medicine, Philadelphia 19104-4283
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Abstract
The authors present a simplified radiographic classification of non-Hodgkin lymphoma involving the small intestine. The classification system is based on radiographic findings in 22 pathologically proved cases of lymphoma involving the small bowel and consists of three major forms: primary, lymphoma complicating celiac disease, and mesenteric nodal. In this series, small bowel lymphoma was evenly distributed in the jejunum and ileum. The most common radiographic patterns were circumferential lesion (seven cases), cavitary lesion (four cases), and mesenteric nodal disease invading the small bowel (seven cases). Obstructive symptoms were usually encountered with the mesenteric nodal form. Lymphoma complicating celiac disease was typified by multiple, thickened, nodular folds involving a segment of proximal small intestine.
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Affiliation(s)
- S E Rubesin
- Department of Radiology, Hospital of the University of Pennsylvania, Philadelphia 19104
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