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Leonard EV, Figueroa RJ, Bussmann J, Lawson ND, Amigo JD, Siekmann AF. Regenerating vascular mural cells in zebrafish fin blood vessels are not derived from pre-existing mural cells and differentially require Pdgfrb signalling for their development. Development 2022; 149:274745. [PMID: 35297968 PMCID: PMC9058498 DOI: 10.1242/dev.199640] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Accepted: 02/24/2022] [Indexed: 12/20/2022]
Abstract
ABSTRACT
Vascular networks comprise endothelial cells and mural cells, which include pericytes and smooth muscle cells. To elucidate the mechanisms controlling mural cell recruitment during development and tissue regeneration, we studied zebrafish caudal fin arteries. Mural cells colonizing arteries proximal to the body wrapped around them, whereas those in more distal regions extended protrusions along the proximo-distal vascular axis. Both cell populations expressed platelet-derived growth factor receptor β (pdgfrb) and the smooth muscle cell marker myosin heavy chain 11a (myh11a). Most wrapping cells in proximal locations additionally expressed actin alpha2, smooth muscle (acta2). Loss of Pdgfrb signalling specifically decreased mural cell numbers at the vascular front. Using lineage tracing, we demonstrate that precursor cells located in periarterial regions and expressing Pgdfrb can give rise to mural cells. Studying tissue regeneration, we did not find evidence that newly formed mural cells were derived from pre-existing cells. Together, our findings reveal conserved roles for Pdgfrb signalling in development and regeneration, and suggest a limited capacity of mural cells to self-renew or contribute to other cell types during tissue regeneration.
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Affiliation(s)
- Elvin V. Leonard
- Max Planck Institute for Molecular Biomedicine, Roentgenstr. 20, 48149 Münster, Germany
- Department of Cell and Developmental Biology, Perelman School of Medicine at the University of Pennsylvania, 1114 Biomedical Research Building, 421 Curie Boulevard, Philadelphia, PA 19104, USA
| | - Ricardo J. Figueroa
- Departamento de Fisiología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Jeroen Bussmann
- Max Planck Institute for Molecular Biomedicine, Roentgenstr. 20, 48149 Münster, Germany
- Division of BioTherapeutics, Leiden Academic Centre for Drug Research (LACDR), Leiden University, PO Box 9502, 2300 RA Leiden, The Netherlands
| | - Nathan D. Lawson
- Department of Molecular, Cell and Cancer Biology, University of Massachusetts Medical School, 364 Plantation Street, Worcester, MA 01605, USA
| | - Julio D. Amigo
- Departamento de Fisiología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Arndt F. Siekmann
- Max Planck Institute for Molecular Biomedicine, Roentgenstr. 20, 48149 Münster, Germany
- Department of Cell and Developmental Biology, Perelman School of Medicine at the University of Pennsylvania, 1114 Biomedical Research Building, 421 Curie Boulevard, Philadelphia, PA 19104, USA
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2
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Stanic K, Reig G, Figueroa RJ, Retamal PA, Wichmann IA, Opazo JC, Owen GI, Corvalán AH, Concha ML, Amigo JD. The Reprimo gene family member, reprimo-like (rprml), is required for blood development in embryonic zebrafish. Sci Rep 2019; 9:7131. [PMID: 31073223 PMCID: PMC6509255 DOI: 10.1038/s41598-019-43436-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2019] [Accepted: 04/24/2019] [Indexed: 11/09/2022] Open
Abstract
The Reprimo gene family comprises a group of single-exon genes for which their physiological function remains poorly understood. Heretofore, mammalian Reprimo (RPRM) has been described as a putative p53-dependent tumor suppressor gene that functions at the G2/M cell cycle checkpoint. Another family member, Reprimo-like (RPRML), has not yet an established role in physiology or pathology. Importantly, RPRML expression pattern is conserved between zebrafish and human species. Here, using CRISPR-Cas9 and antisense morpholino oligonucleotides, we disrupt the expression of rprml in zebrafish and demonstrate that its loss leads to impaired definitive hematopoiesis. The formation of hemangioblasts and the primitive wave of hematopoiesis occur normally in absence of rprml. Later in development there is a significant reduction in erythroid-myeloid precursors (EMP) at the posterior blood island (PBI) and a significant decline of definitive hematopoietic stem/progenitor cells (HSPCs). Furthermore, loss of rprml also increases the activity of caspase-3 in endothelial cells within the caudal hematopoietic tissue (CHT), the first perivascular niche where HSPCs reside during zebrafish embryonic development. Herein, we report an essential role for rprml during hematovascular development in zebrafish embryos, specifically during the definitive waves of hematopoiesis, indicating for the first time a physiological role for the rprml gene.
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Affiliation(s)
- Karen Stanic
- Departamento de Fisiología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - German Reig
- Institute of Biomedical Sciences, Faculty of Medicine, Universidad de Chile, Santiago, Chile.,Universidad Bernardo O´Higgins, Escuela de Tecnología Médica and Centro Integrativo de Biología y Química Aplicada (CIBQA), Santiago, Chile
| | - Ricardo J Figueroa
- Departamento de Fisiología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Pedro A Retamal
- Departamento de Fisiología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Ignacio A Wichmann
- Advanced Center for Chronic Diseases (ACCDiS), Santiago, Chile.,Laboratorio de Oncología, Departamento de Hematología y Oncología, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Juan C Opazo
- Instituto de Ciencias Ambientales y Evolutivas, Facultad de Ciencias, Universidad Austral de Chile, Valdivia, Chile
| | - Gareth I Owen
- Departamento de Fisiología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile.,Advanced Center for Chronic Diseases (ACCDiS), Santiago, Chile.,Millennium Institute on Immunology and Immunotherapy, Santiago, Chile
| | - Alejandro H Corvalán
- Advanced Center for Chronic Diseases (ACCDiS), Santiago, Chile.,Laboratorio de Oncología, Departamento de Hematología y Oncología, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Miguel L Concha
- Institute of Biomedical Sciences, Faculty of Medicine, Universidad de Chile, Santiago, Chile.,Biomedical Neuroscience Institute, Santiago, Chile, Center for Geroscience, Brain Health and Metabolism, Santiago, Chile
| | - Julio D Amigo
- Departamento de Fisiología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile.
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3
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Amigo JD, Opazo JC, Jorquera R, Wichmann IA, Garcia-Bloj BA, Alarcon MA, Owen GI, Corvalán AH. The Reprimo Gene Family: A Novel Gene Lineage in Gastric Cancer with Tumor Suppressive Properties. Int J Mol Sci 2018; 19:E1862. [PMID: 29941787 PMCID: PMC6073456 DOI: 10.3390/ijms19071862] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2018] [Revised: 04/20/2018] [Accepted: 04/21/2018] [Indexed: 12/18/2022] Open
Abstract
The reprimo (RPRM) gene family is a group of single exon genes present exclusively within the vertebrate lineage. Two out of three members of this family are present in humans: RPRM and RPRM-Like (RPRML). RPRM induces cell cycle arrest at G2/M in response to p53 expression. Loss-of-expression of RPRM is related to increased cell proliferation and growth in gastric cancer. This evidence suggests that RPRM has tumor suppressive properties. However, the molecular mechanisms and signaling partners by which RPRM exerts its functions remain unknown. Moreover, scarce studies have attempted to characterize RPRML, and its functionality is unclear. Herein, we highlight the role of the RPRM gene family in gastric carcinogenesis, as well as its potential applications in clinical settings. In addition, we summarize the current knowledge on the phylogeny and expression patterns of this family of genes in embryonic zebrafish and adult humans. Strikingly, in both species, RPRM is expressed primarily in the digestive tract, blood vessels and central nervous system, supporting the use of zebrafish for further functional characterization of RPRM. Finally, drawing on embryonic and adult expression patterns, we address the potential relevance of RPRM and RPRML in cancer. Active investigation or analytical research in the coming years should contribute to novel translational applications of this poorly understood gene family as potential biomarkers and development of novel cancer therapies.
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Affiliation(s)
- Julio D Amigo
- Departamento de Fisiología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, 8330025 Santiago, Chile.
| | - Juan C Opazo
- Instituto de Ciencias Ambientales y Evolutivas, Facultad de Ciencias, Universidad Austral de Chile, 5090000 Valdivia, Chile.
| | - Roddy Jorquera
- CORE Biodata, Advanced Center for Chronic Diseases (ACCDiS), Pontificia Universidad Católica de Chile, 8330024 Santiago, Chile.
| | - Ignacio A Wichmann
- Laboratory of Oncology, Facultad de Medicina, Pontificia Universidad Católica de Chile, 8330034 Santiago, Chile.
- Departamento de Oncología y Hematología, Facultad de Medicina, Pontificia Universidad Católica de Chile, 8330034 Santiago, Chile.
- CORE Biodata, Advanced Center for Chronic Diseases (ACCDiS), Pontificia Universidad Católica de Chile, 8330024 Santiago, Chile.
| | - Benjamin A Garcia-Bloj
- Laboratory of Oncology, Facultad de Medicina, Pontificia Universidad Católica de Chile, 8330034 Santiago, Chile.
| | - Maria Alejandra Alarcon
- Laboratory of Oncology, Facultad de Medicina, Pontificia Universidad Católica de Chile, 8330034 Santiago, Chile.
- Departamento de Oncología y Hematología, Facultad de Medicina, Pontificia Universidad Católica de Chile, 8330034 Santiago, Chile.
| | - Gareth I Owen
- Departamento de Fisiología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, 8330025 Santiago, Chile.
- Laboratory of Oncology, Facultad de Medicina, Pontificia Universidad Católica de Chile, 8330034 Santiago, Chile.
- Millennium Institute on Immunology and Immunotherapy, Pontificia Universidad Católica de Chile, 8331150 Santiago, Chile.
| | - Alejandro H Corvalán
- Laboratory of Oncology, Facultad de Medicina, Pontificia Universidad Católica de Chile, 8330034 Santiago, Chile.
- Departamento de Oncología y Hematología, Facultad de Medicina, Pontificia Universidad Católica de Chile, 8330034 Santiago, Chile.
- CORE Biodata, Advanced Center for Chronic Diseases (ACCDiS), Pontificia Universidad Católica de Chile, 8330024 Santiago, Chile.
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4
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Stanic K, Quiroz A, Lemus CG, Wichmann IA, Corvalán AH, Owen GI, Opazo JC, Concha ML, Amigo JD. Expression of RPRM/rprm in the Olfactory System of Embryonic Zebrafish ( Danio rerio). Front Neuroanat 2018; 12:23. [PMID: 29636669 PMCID: PMC5881088 DOI: 10.3389/fnana.2018.00023] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [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: 12/06/2017] [Accepted: 03/12/2018] [Indexed: 01/22/2023] Open
Abstract
The Reprimo (RPRM) family is composed of highly conserved single-exon genes. The expression pattern of this gene family has been recently described during zebrafish (Danio rerio) embryogenesis, and primarily locates in the nervous system. Its most characterized member, RPRM, which duplicated to give rise rprma and rprmb in the fish lineage, is known to act as a tumor-suppressor gene in mammalian models. Here, we describe in detail the spatiotemporal expression of three rprm genes (rprma, rprmb, and rprml) within distinct anatomical structures in the developing peripheral and central nervous system. In the zebrafish, rprma mRNA is expressed in the olfactory placodes (OP) and olfactory epithelium (OE), rprmb is observed in the tectum opticum (TeO) and trigeminal ganglion (Tg), whereas rprml is found primarily in the telencephalon (Tel). At protein level, RPRM is present in a subset of cells in the OP, and neurons in the OE, TeO, hindbrain and sensory peripheral structures. Most importantly, the expression of RPRM has been conserved between teleosts and mammals. Thus, we provide a reference dataset describing the expression patterns of RPRM gene products during zebrafish and mouse development as a first step to approach the physiological role of the RPRM gene family.
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Affiliation(s)
- Karen Stanic
- Departamento de Fisiología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Alonso Quiroz
- Departamento de Fisiología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Carmen G Lemus
- Anatomy and Developmental Biology Program, Faculty of Medicine, Institute of Biomedical Sciences, Universidad de Chile, Santiago, Chile
| | - Ignacio A Wichmann
- Advanced Center for Chronic Diseases, Santiago, Chile.,UC Center for Investigation in Oncology, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Alejandro H Corvalán
- Advanced Center for Chronic Diseases, Santiago, Chile.,UC Center for Investigation in Oncology, Pontificia Universidad Católica de Chile, Santiago, Chile.,Departamento de Oncología y Hematología, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Gareth I Owen
- Departamento de Fisiología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile.,Advanced Center for Chronic Diseases, Santiago, Chile.,UC Center for Investigation in Oncology, Pontificia Universidad Católica de Chile, Santiago, Chile.,Departamento de Oncología y Hematología, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile.,Millennium Institute on Immunology and Immunotherapy, Santiago, Chile
| | - Juan C Opazo
- Instituto de Ciencias Ambientales y Evolutivas, Facultad de Ciencias, Universidad Austral de Chile, Valdivia, Chile
| | - Miguel L Concha
- Anatomy and Developmental Biology Program, Faculty of Medicine, Institute of Biomedical Sciences, Universidad de Chile, Santiago, Chile.,Biomedical Neuroscience Institute, Universidad de Chile, Santiago, Chile
| | - Julio D Amigo
- Departamento de Fisiología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile
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5
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Figueroa RJ, Carrasco-Avino G, Wichmann IA, Lange M, Owen GI, Siekmann AF, Corvalán AH, Opazo JC, Amigo JD. Reprimo tissue-specific expression pattern is conserved between zebrafish and human. PLoS One 2017; 12:e0178274. [PMID: 28562620 PMCID: PMC5451059 DOI: 10.1371/journal.pone.0178274] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [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: 02/07/2017] [Accepted: 05/10/2017] [Indexed: 01/28/2023] Open
Abstract
Reprimo (RPRM), a member of the RPRM gene family, is a tumor-suppressor gene involved in the regulation of the p53-mediated cell cycle arrest at G2/M. RPRM has been associated with malignant tumor progression and proposed as a potential biomarker for early cancer detection. However, the expression and role of RPRM, as well as its family, are poorly understood and their physiology is as yet unstudied. In this scenario, a model system like the zebrafish could serve to dissect the role of the RPRM family members in vivo. Phylogenetic analysis reveals that RPRM and RPRML have been differentially retained by most species throughout vertebrate evolution, yet RPRM3 has been retained only in a small group of distantly related species, including zebrafish. Herein, we characterized the spatiotemporal expression of RPRM (present in zebrafish as an infraclass duplication rprma/rprmb), RPRML and RPRM3 in the zebrafish. By whole-mount in situ hybridization (WISH) and fluorescent in situ hybridization (FISH), we demonstrate that rprm (rprma/rprmb) and rprml show a similar spatiotemporal expression profile during zebrafish development. At early developmental stages rprmb is expressed in somites. After one day post-fertilization, rprm (rprma/rprmb) and rprml are expressed in the notochord, brain, blood vessels and digestive tube. On the other hand, rprm3 shows the most unique expression profile, being expressed only in the central nervous system (CNS). We assessed the expression patterns of RPRM gene transcripts in adult zebrafish and human RPRM protein product in tissue samples by RT-qPCR and immunohistochemistry (IHC) staining, respectively. Strikingly, tissue-specific expression patterns of the RPRM transcripts and protein are conserved between zebrafish and humans. We propose the zebrafish as a powerful tool to elucidate the both physiological and pathological roles of the RPRM gene family.
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Affiliation(s)
- Ricardo J. Figueroa
- Departamento de Fisiología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Gonzalo Carrasco-Avino
- Advanced Center for Chronic Diseases (ACCDiS), Santiago, Chile
- Pathology Department, Hospital Clínico Universidad de Chile, Santiago, Chile
| | - Ignacio A. Wichmann
- Advanced Center for Chronic Diseases (ACCDiS), Santiago, Chile
- Departamento de Oncología y Hematología, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Martin Lange
- Max Planck Institute for Molecular Biomedicine, Muenster, Germany
| | - Gareth I. Owen
- Departamento de Fisiología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile
- Advanced Center for Chronic Diseases (ACCDiS), Santiago, Chile
- Departamento de Oncología y Hematología, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
- Millennium Institute on Immunology and Immunotherapy, Santiago, Chile
- Center UC for Investigation in Oncology (CITO), Pontificia Universidad Católica de Chile, Santiago, Chile
| | | | - Alejandro H. Corvalán
- Advanced Center for Chronic Diseases (ACCDiS), Santiago, Chile
- Departamento de Oncología y Hematología, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
- Center UC for Investigation in Oncology (CITO), Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Juan C. Opazo
- Instituto de Ciencias Ambientales y Evolutivas, Facultad de Ciencias, Universidad Austral de Chile, Valdivia, Chile
| | - Julio D. Amigo
- Departamento de Fisiología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile
- * E-mail:
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6
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Wichmann IA, Zavala K, Hoffmann FG, Vandewege MW, Corvalán AH, Amigo JD, Owen GI, Opazo JC. Evolutionary history of the reprimo tumor suppressor gene family in vertebrates with a description of a new reprimo gene lineage. Gene 2016; 591:245-254. [PMID: 27432065 DOI: 10.1016/j.gene.2016.07.036] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2016] [Revised: 07/12/2016] [Accepted: 07/14/2016] [Indexed: 11/19/2022]
Abstract
Genes related to human diseases should be natural targets for evolutionary studies, since they could provide clues regarding the genetic bases of pathologies and potential treatments. Here we studied the evolution of the reprimo gene family, a group of tumor-suppressor genes that are implicated in p53-mediated cell cycle arrest. These genes, especially the reprimo duplicate located on human chromosome 2, have been associated with epigenetic modifications correlated with transcriptional silencing and cancer progression. We demonstrate the presence of a third reprimo lineage that, together with the reprimo and reprimo-like genes, appears to have been differentially retained during the evolutionary history of vertebrates. We present evidence that these reprimo lineages originated early in vertebrate evolution and expanded as a result of the two rounds of whole genome duplications that occurred in the last common ancestor of vertebrates. The reprimo gene has been lost in birds, and the third reprimo gene lineage has been retained in only a few distantly related species, such as coelacanth and gar. Expression analyses revealed that the reprimo paralogs are mainly expressed in the nervous system. Different vertebrate lineages have retained different reprimo paralogs, and even in species that have retained multiple copies, only one of them is heavily expressed.
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Affiliation(s)
- Ignacio A Wichmann
- Advanced Center for Chronic Diseases (ACCDiS), Pontificia Universidad Católica de Chile, Santiago, Chile; Departamento de Oncología y Hematología, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Kattina Zavala
- Instituto de Ciencias Ambientales y Evolutivas, Facultad de Ciencias, Universidad Austral de Chile, Valdivia, Chile
| | - Federico G Hoffmann
- Department of Biochemistry, Molecular Biology, Entomology, and Plant Pathology, Mississippi State University, MS, USA; Institute for Genomics, Biocomputing, and Biotechnology, Mississippi State University, MS, USA
| | - Michael W Vandewege
- Department of Biochemistry, Molecular Biology, Entomology, and Plant Pathology, Mississippi State University, MS, USA
| | - Alejandro H Corvalán
- Advanced Center for Chronic Diseases (ACCDiS), Pontificia Universidad Católica de Chile, Santiago, Chile; Departamento de Oncología y Hematología, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile; Center UC for Investigation in Oncology (CITO), Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Julio D Amigo
- Departamento de Fisiología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Gareth I Owen
- Advanced Center for Chronic Diseases (ACCDiS), Pontificia Universidad Católica de Chile, Santiago, Chile; Departamento de Fisiología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile; Center UC for Investigation in Oncology (CITO), Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Juan C Opazo
- Instituto de Ciencias Ambientales y Evolutivas, Facultad de Ciencias, Universidad Austral de Chile, Valdivia, Chile.
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Yu D, dos Santos CO, Zhao G, Jiang J, Amigo JD, Khandros E, Dore LC, Yao Y, D'Souza J, Zhang Z, Ghaffari S, Choi J, Friend S, Tong W, Orange JS, Paw BH, Weiss MJ. miR-451 protects against erythroid oxidant stress by repressing 14-3-3zeta. Genes Dev 2010; 24:1620-33. [PMID: 20679398 DOI: 10.1101/gad.1942110] [Citation(s) in RCA: 168] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The bicistronic microRNA (miRNA) locus miR-144/451 is highly expressed during erythrocyte development, although its physiological roles are poorly understood. We show that miR-144/451 ablation in mice causes mild erythrocyte instability and increased susceptibility to damage after exposure to oxidant drugs. This phenotype is deeply conserved, as miR-451 depletion synergizes with oxidant stress to cause profound anemia in zebrafish embryos. At least some protective activities of miR-451 stem from its ability to directly suppress production of 14-3-3zeta, a phospho-serine/threonine-binding protein that inhibits nuclear accumulation of transcription factor FoxO3, a positive regulator of erythroid anti-oxidant genes. Thus, in miR-144/451(-/-) erythroblasts, 14-3-3zeta accumulates, causing partial relocalization of FoxO3 from nucleus to cytoplasm with dampening of its transcriptional program, including anti-oxidant-encoding genes Cat and Gpx1. Supporting this mechanism, overexpression of 14-3-3zeta in erythroid cells and fibroblasts inhibits nuclear localization and activity of FoxO3. Moreover, shRNA suppression of 14-3-3zeta protects miR-144/451(-/-) erythrocytes against peroxide-induced destruction, and restores catalase activity. Our findings define a novel miRNA-regulated pathway that protects erythrocytes against oxidant stress, and, more generally, illustrate how a miRNA can influence gene expression by altering the activity of a key transcription factor.
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Affiliation(s)
- Duonan Yu
- Division of Hematology, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania 19104, USA
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8
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Amigo JD, Ackermann GE, Cope JJ, Yu M, Cooney JD, Ma D, Langer NB, Shafizadeh E, Shaw GC, Horsely W, Trede NS, Davidson AJ, Barut BA, Zhou Y, Wojiski SA, Traver D, Moran TB, Kourkoulis G, Hsu K, Kanki JP, Shah DI, Lin HF, Handin RI, Cantor AB, Paw BH. The role and regulation of friend of GATA-1 (FOG-1) during blood development in the zebrafish. Blood 2009; 114:4654-63. [PMID: 19729519 PMCID: PMC2780302 DOI: 10.1182/blood-2008-12-189910] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.6] [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] [Received: 12/19/2008] [Accepted: 08/06/2009] [Indexed: 01/24/2023] Open
Abstract
The nuclear protein FOG-1 binds transcription factor GATA-1 to facilitate erythroid and megakaryocytic maturation. However, little is known about the function of FOG-1 during myeloid and lymphoid development or how FOG-1 expression is regulated in any tissue. We used in situ hybridization, gain- and loss-of-function studies in zebrafish to address these problems. Zebrafish FOG-1 is expressed in early hematopoietic cells, as well as heart, viscera, and paraspinal neurons, suggesting that it has multifaceted functions in organogenesis. We found that FOG-1 is dispensable for endoderm specification but is required for endoderm patterning affecting the expression of late-stage T-cell markers, independent of GATA-1. The suppression of FOG-1, in the presence of normal GATA-1 levels, induces severe anemia and thrombocytopenia and expands myeloid-progenitor cells, indicating that FOG-1 is required during erythroid/myeloid commitment. To functionally interrogate whether GATA-1 regulates FOG-1 in vivo, we used bioinformatics combined with transgenic assays. Thus, we identified 2 cis-regulatory elements that control the tissue-specific gene expression of FOG-1. One of these enhancers contains functional GATA-binding sites, indicating the potential for a regulatory loop in which GATA factors control the expression of their partner protein FOG-1.
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Affiliation(s)
- Julio D Amigo
- Department of Medicine, Division of Hematology, Brigham & Women's Hospital, Boston, MA 02115, USA
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9
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Buchner DA, Su F, Yamaoka JS, Kamei M, Shavit JA, Barthel LK, McGee B, Amigo JD, Kim S, Hanosh AW, Jagadeeswaran P, Goldman D, Lawson ND, Raymond PA, Weinstein BM, Ginsburg D, Lyons SE. pak2a mutations cause cerebral hemorrhage in redhead zebrafish. Proc Natl Acad Sci U S A 2007; 104:13996-4001. [PMID: 17715297 PMCID: PMC1955825 DOI: 10.1073/pnas.0700947104] [Citation(s) in RCA: 77] [Impact Index Per Article: 4.5] [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: 01/23/2023] Open
Abstract
The zebrafish is a powerful model for studying vascular development, demonstrating remarkable conservation of this process with mammals. Here, we identify a zebrafish mutant, redhead (rhd(mi149)), that exhibits embryonic CNS hemorrhage with intact gross development of the vasculature and normal hemostatic function. We show that the rhd phenotype is caused by a hypomorphic mutation in p21-activated kinase 2a (pak2a). PAK2 is a kinase that acts downstream of the Rho-family GTPases CDC42 and RAC and has been implicated in angiogenesis, regulation of cytoskeletal structure, and endothelial cell migration and contractility among other functions. Correction of the Pak2a-deficient phenotype by Pak2a overexpression depends on kinase activity, implicating Pak2 signaling in the maintenance of vascular integrity. Rescue by an endothelial-specific transgene further suggests that the hemorrhage seen in Pak2a deficiency is the result of an autonomous endothelial cell defect. Reduced expression of another PAK2 ortholog, pak2b, in Pak2a-deficient embryos results in a more severe hemorrhagic phenotype, consistent with partially overlapping functions for these two orthologs. These data provide in vivo evidence for a critical function of Pak2 in vascular integrity and demonstrate a severe disease phenotype resulting from loss of Pak2 function.
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Affiliation(s)
| | | | | | - Makoto Kamei
- Laboratory of Molecular Genetics, National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD 20892
| | | | | | - Beth McGee
- *Howard Hughes Medical Institute and Life Sciences Institute
| | - Julio D. Amigo
- **Program in Gene Function and Expression, University of Massachusetts Medical School, Worcester, MA 01605
| | - Seongcheol Kim
- Department of Biological Sciences, University of North Texas, Denton, TX 76203; and
| | | | - Pudur Jagadeeswaran
- Department of Biological Sciences, University of North Texas, Denton, TX 76203; and
| | - Daniel Goldman
- Molecular and Behavioral Neuroscience Institute and Department of Biological Chemistry, and
| | - Nathan D. Lawson
- **Program in Gene Function and Expression, University of Massachusetts Medical School, Worcester, MA 01605
| | | | - Brant M. Weinstein
- Laboratory of Molecular Genetics, National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD 20892
| | - David Ginsburg
- *Howard Hughes Medical Institute and Life Sciences Institute
- Department of Internal Medicine
- To whom correspondence should be addressed at:
University of Michigan, 210 Washtenaw Avenue, Ann Arbor, MI 48109-2216. E-mail:
| | - Susan E. Lyons
- Department of Internal Medicine
- Division of Hematology/Oncology and Cellular and Molecular Biology Program, University of Michigan, Ann Arbor, MI 48109
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10
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Covassin L, Amigo JD, Suzuki K, Teplyuk V, Straubhaar J, Lawson ND. Global analysis of hematopoietic and vascular endothelial gene expression by tissue specific microarray profiling in zebrafish. Dev Biol 2006; 299:551-62. [PMID: 16999953 PMCID: PMC1779954 DOI: 10.1016/j.ydbio.2006.08.020] [Citation(s) in RCA: 95] [Impact Index Per Article: 5.3] [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] [Received: 04/27/2006] [Revised: 07/28/2006] [Accepted: 08/06/2006] [Indexed: 12/01/2022]
Abstract
In this study, we utilize fluorescent activated cell sorting (FACS) of cells from transgenic zebrafish coupled with microarray analysis to globally analyze expression of cell type specific genes. We find that it is possible to isolate cell populations from Tg(fli1:egfp)(y1) zebrafish embryos that are enriched in vascular, hematopoietic and pharyngeal arch cell types. Microarray analysis of GFP+ versus GFP- cells isolated from Tg(fli1:egfp)(y1) embryos identifies genes expressed in hematopoietic, vascular and pharyngeal arch tissue, consistent with the expression of the fli1:egfp transgene in these cell types. Comparison of expression profiles from GFP+ cells isolated from embryos at two different time points reveals that genes expressed in different fli1+ cell types display distinct temporal expression profiles. We also demonstrate the utility of this approach for gene discovery by identifying numerous previously uncharacterized genes that we find are expressed in fli1:egfp-positive cells, including new markers of blood, endothelial and pharyngeal arch cell types. In parallel, we have developed a database to allow easy access to both our microarray and in situ results. Our results demonstrate that this is a robust approach for identification of cell type specific genes as well as for global analysis of cell type specific gene expression in zebrafish embryos.
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Affiliation(s)
| | | | - Kana Suzuki
- Diabetes and Endocrinology Research Center, University of
Massachusetts Medical School
| | - Viktor Teplyuk
- Diabetes and Endocrinology Research Center, University of
Massachusetts Medical School
| | - Juerg Straubhaar
- Diabetes and Endocrinology Research Center, University of
Massachusetts Medical School
| | - Nathan D. Lawson
- Program in Gene Function and Expression and
- * corresponding author: Nathan D. Lawson, Ph.D,.
Assistant Professor, Program in Gene Function and Expression, University of
Massachusetts Medical School, Lazare Research Building, Room 617, 364 Plantation
Street, Worcester, MA 01605 Phone: (508) 856-1177 Fax: (508) 856-5460 e-mail:
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