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Chen X, Wang W, Yeh J, Wu Y, Oehler VG, Naresh KN, Liu YJ. Clinical Validation of FusionPlex RNA Sequencing and Its Utility in the Diagnosis and Classification of Hematologic Neoplasms. J Mol Diagn 2023; 25:932-944. [PMID: 37813298 DOI: 10.1016/j.jmoldx.2023.09.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2023] [Revised: 08/11/2023] [Accepted: 09/12/2023] [Indexed: 10/11/2023] Open
Abstract
Recurrent gene rearrangements result in gene fusions that encode chimeric proteins, driving the pathogenesis of many hematologic neoplasms. The fifth edition World Health Organization classification and International Consensus Classification 2022 include an expanding list of entities defined by such gene rearrangements. Therefore, sensitive and rapid methods are needed to identify a broad range of gene fusions for precise diagnosis and prognostication. In this study, we validated the FusionPlex Pan-Heme panel analysis using anchored multiplex PCR/targeted RNA next-generation sequencing for routine clinical testing. Furthermore, we assessed its utility in detecting gene fusions in myeloid and lymphoid neoplasms. The validation cohort of 61 cases demonstrated good concordance between the FusionPlex Pan-Heme panel and other methods, including chromosome analysis, fluorescence in situ hybridization, RT-PCR, and Sanger sequencing, with an analytic sensitivity and specificity of 95% and 100%, respectively. In an independent cohort of 28 patients indicated for FusionPlex testing, gene fusions were detected in 21 patients. The FusionPlex Pan-Heme panel analysis reliably detected fusion partners and patient-specific fusion sequences, allowing accurate classification of hematologic neoplasms and the discovery of new fusion partners, contributing to a better understanding of the pathogenesis of the diseases.
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Affiliation(s)
- Xueyan Chen
- Department of Laboratory Medicine and Pathology, University of Washington, Seattle, Washington; Translational Science and Therapeutics Division, Fred Hutchinson Cancer Center, Seattle, Washington
| | - Wenjing Wang
- Department of Laboratory Medicine and Pathology, University of Washington, Seattle, Washington
| | - Jeffrey Yeh
- Department of Laboratory Medicine and Pathology, University of Washington, Seattle, Washington
| | - Yu Wu
- Department of Laboratory Medicine and Pathology, University of Washington, Seattle, Washington
| | - Vivian G Oehler
- Department of Medicine, University of Washington, Seattle, Washington
| | - Kikkeri N Naresh
- Department of Laboratory Medicine and Pathology, University of Washington, Seattle, Washington; Translational Science and Therapeutics Division, Fred Hutchinson Cancer Center, Seattle, Washington
| | - Yajuan J Liu
- Department of Laboratory Medicine and Pathology, University of Washington, Seattle, Washington.
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PANAGOPOULOS IOANNIS, HEIM SVERRE. Neoplasia-associated Chromosome Translocations Resulting in Gene Truncation. Cancer Genomics Proteomics 2022; 19:647-672. [PMID: 36316036 PMCID: PMC9620447 DOI: 10.21873/cgp.20349] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Revised: 08/19/2022] [Accepted: 08/23/2022] [Indexed: 11/27/2022] Open
Abstract
Chromosomal translocations in cancer as well as benign neoplasias typically lead to the formation of fusion genes. Such genes may encode chimeric proteins when two protein-coding regions fuse in-frame, or they may result in deregulation of genes via promoter swapping or translocation of the gene into the vicinity of a highly active regulatory element. A less studied consequence of chromosomal translocations is the fusion of two breakpoint genes resulting in an out-of-frame chimera. The breaks then occur in one or both protein-coding regions forming a stop codon in the chimeric transcript shortly after the fusion point. Though the latter genetic events and mechanisms at first awoke little research interest, careful investigations have established them as neither rare nor inconsequential. In the present work, we review and discuss the truncation of genes in neoplastic cells resulting from chromosomal rearrangements, especially from seemingly balanced translocations.
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Affiliation(s)
- IOANNIS PANAGOPOULOS
- Section for Cancer Cytogenetics, Institute for Cancer Genetics and Informatics, The Norwegian Radium Hospital, Oslo University Hospital, Oslo, Norway
| | - SVERRE HEIM
- Section for Cancer Cytogenetics, Institute for Cancer Genetics and Informatics, The Norwegian Radium Hospital, Oslo University Hospital, Oslo, Norway,Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway
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Borst S, Nations CC, Klein JG, Pavani G, Maguire JA, Camire RM, Drazer MW, Godley LA, French DL, Poncz M, Gadue P. Study of inherited thrombocytopenia resulting from mutations in ETV6 or RUNX1 using a human pluripotent stem cell model. Stem Cell Reports 2021; 16:1458-1467. [PMID: 34019812 PMCID: PMC8190596 DOI: 10.1016/j.stemcr.2021.04.013] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Revised: 04/20/2021] [Accepted: 04/21/2021] [Indexed: 12/29/2022] Open
Abstract
Inherited thrombocytopenia results in low platelet counts and increased bleeding. Subsets of these patients have monoallelic germline mutations in ETV6 or RUNX1 and a heightened risk of developing hematologic malignancies. Utilizing CRISPR-Cas9, we compared the in vitro phenotype of hematopoietic progenitor cells and megakaryocytes derived from induced pluripotent stem cell (iPSC) lines harboring mutations in either ETV6 or RUNX1. Both mutant lines display phenotypes consistent with a platelet-bleeding disorder. Surprisingly, these cellular phenotypes were largely distinct. The ETV6-mutant iPSCs yield more hematopoietic progenitor cells and megakaryocytes, but the megakaryocytes are immature and less responsive to agonist stimulation. On the contrary, RUNX1-mutant iPSCs yield fewer hematopoietic progenitor cells and megakaryocytes, but the megakaryocytes are more responsive to agonist stimulation. However, both mutant iPSC lines display defects in proplatelet formation. Our work highlights that, while patients harboring germline ETV6 or RUNX1 mutations have similar clinical phenotypes, the molecular mechanisms may be distinct.
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Affiliation(s)
- Sara Borst
- Department of Cell and Molecular Biology, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA 19104, USA; Center for Cellular and Molecular Therapeutics, Children's Hospital of Philadelphia, CTRB 5012, 3501 Civic Center Boulevard, Philadelphia, PA 19104, USA
| | - Catriana C Nations
- Department of Cell and Molecular Biology, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA 19104, USA; Center for Cellular and Molecular Therapeutics, Children's Hospital of Philadelphia, CTRB 5012, 3501 Civic Center Boulevard, Philadelphia, PA 19104, USA
| | - Joshua G Klein
- Center for Cellular and Molecular Therapeutics, Children's Hospital of Philadelphia, CTRB 5012, 3501 Civic Center Boulevard, Philadelphia, PA 19104, USA
| | - Giulia Pavani
- Center for Cellular and Molecular Therapeutics, Children's Hospital of Philadelphia, CTRB 5012, 3501 Civic Center Boulevard, Philadelphia, PA 19104, USA
| | - Jean Ann Maguire
- Center for Cellular and Molecular Therapeutics, Children's Hospital of Philadelphia, CTRB 5012, 3501 Civic Center Boulevard, Philadelphia, PA 19104, USA
| | - Rodney M Camire
- Center for Cellular and Molecular Therapeutics, Children's Hospital of Philadelphia, CTRB 5012, 3501 Civic Center Boulevard, Philadelphia, PA 19104, USA; Department of Pediatrics, University of Pennsylvania Perelman School of Medicine and Children's Hospital of Philadelphia, Philadelphia, PA 19104, USA
| | - Michael W Drazer
- Section of Hematology/Oncology, Departments of Medicine and Human Genetics, The University of Chicago, Chicago, IL 60637, USA
| | - Lucy A Godley
- Section of Hematology/Oncology, Departments of Medicine and Human Genetics, The University of Chicago, Chicago, IL 60637, USA
| | - Deborah L French
- Center for Cellular and Molecular Therapeutics, Children's Hospital of Philadelphia, CTRB 5012, 3501 Civic Center Boulevard, Philadelphia, PA 19104, USA; Department of Pathology and Laboratory Medicine, University of Pennsylvania Perelman School of Medicine and Children's Hospital of Philadelphia, Philadelphia, PA 19104, USA
| | - Mortimer Poncz
- Department of Pediatrics, University of Pennsylvania Perelman School of Medicine and Children's Hospital of Philadelphia, Philadelphia, PA 19104, USA
| | - Paul Gadue
- Center for Cellular and Molecular Therapeutics, Children's Hospital of Philadelphia, CTRB 5012, 3501 Civic Center Boulevard, Philadelphia, PA 19104, USA; Department of Pathology and Laboratory Medicine, University of Pennsylvania Perelman School of Medicine and Children's Hospital of Philadelphia, Philadelphia, PA 19104, USA.
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Guo C, Gao C, Zhao D, Li J, Wang J, Sun X, Liu Q, Hao L, Greenaway FT, Tian Y, Liu S, Sun MZ. A novel ETV6-miR-429-CRKL regulatory circuitry contributes to aggressiveness of hepatocellular carcinoma. J Exp Clin Cancer Res 2020; 39:70. [PMID: 32326970 PMCID: PMC7178969 DOI: 10.1186/s13046-020-01559-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2019] [Accepted: 03/10/2020] [Indexed: 01/24/2023] Open
Abstract
BACKGROUND Tumor metastasis is one of the main causes of the high mortality of hepatocellular carcinoma (HCC). E-Twenty Six variant gene 6 (ETV6) is a strong transcriptional repressor, associated with the development and progression of tumors. However, the exact role and underlying mechanism of ETV6 in HCC remain unclear. METHODS Western blotting, quantitative real-time PCR and immunohistochemistry were used to detect the expression levels of ETV6, CRKL (v-crk sarcoma virus CT10 oncogene homologue (avian)-like) and miR-429 in HCC tissues and cells; Transwell chamber and F-actin cytoskeleton staining assay to examine the effects of ETV6 and CRKL deregulation on the migration, invasion and cytoskeleton of HCC cells; Co-immunoprecipitation assay to determine the interaction between CRKL and ETV6; Chromatin immunoprecipitation assay to investigate the interaction between ETV6 and miR-429. RESULTS We established a novel ETV6-miR-429-CRKL regulatory circuitry contributes to HCC metastasis. ETV6 and CRKL were frequently increased, while miR-429 was downregulated in both hepatocarcinoma tissues and hepatocarcinoma cells. Moreover, ETV6 upregulation was positively correlated with CRKL upregulation, and two negative correlations were also established for ETV6 and CRKL upregulation with miR-429 downregulation in both hepatocarcinoma patients' tumorous tissues and hepatocarcinoma cells. Functional investigations revealed that overexpression and knockdown of ETV6 was remarkably effective in promoting and suppressing HCC cell migration, invasion, cytoskeleton F-actin expression and arrangement, whereas, CRKL overexpression exhibited similar effects to the overexpression of ETV6. Mechanistically, ETV6 negatively regulates miR-429 expression by directly binding to the promoter region of miR-429; miR-429 negatively regulates CRKL expression by selectively targeting CRKL-3'-UTR; ETV6 directly binds to CRKL and positively regulates its expression, which in turn CRKL positively regulates ETV6 expression. CONCLUSIONS Our data demonstrated that ETV6 promotes migration and invasion of HCC cells by directly binding to promoter region of miR-429 via modulating CRKL expression. The newly identified ETV6-miR-429-CRKL regulatory circuitry contributes to the aggressiveness of HCC, which provides new clues for fundamental research on diagnosis and treatment parameters for HCC.
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Affiliation(s)
- Chunmei Guo
- Department of Biotechnology, College of Basic Medical Sciences, Dalian Medical University, Dalian, 116044, China
| | - Chao Gao
- Department of Biotechnology, College of Basic Medical Sciences, Dalian Medical University, Dalian, 116044, China
| | - Dongting Zhao
- Department of Biotechnology, College of Basic Medical Sciences, Dalian Medical University, Dalian, 116044, China
| | - Jiahui Li
- Department of Biochemistry, College of Basic Medical Sciences, Dalian Medical University, Dalian, 116044, China
| | - Jinxia Wang
- Department of Biotechnology, College of Basic Medical Sciences, Dalian Medical University, Dalian, 116044, China
| | - Xujuan Sun
- Department of Biotechnology, College of Basic Medical Sciences, Dalian Medical University, Dalian, 116044, China
| | - Qinlong Liu
- Department of General Surgery, The Second Affiliated Hospital, Dalian Medical University, Dalian, 116044, China
| | - Lihong Hao
- Department of Histology and Embryology, College of Basic Medical Sciences, Dalian Medical University, Dalian, 116044, China
| | - Frederick T Greenaway
- Carlson School of Chemistry and Biochemistry, Clark University, Worcester, MA, 01610, USA
| | - Yuxiang Tian
- Department of Biochemistry, College of Basic Medical Sciences, Dalian Medical University, Dalian, 116044, China
| | - Shuqing Liu
- Department of Biochemistry, College of Basic Medical Sciences, Dalian Medical University, Dalian, 116044, China.
| | - Ming-Zhong Sun
- Department of Biotechnology, College of Basic Medical Sciences, Dalian Medical University, Dalian, 116044, China.
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Panagopoulos I, Gorunova L, Andersen HK, Bergrem A, Dahm A, Andersen K, Micci F, Heim S. PAN3- PSMA2 fusion resulting from a novel t(7;13)(p14;q12) chromosome translocation in a myelodysplastic syndrome that evolved into acute myeloid leukemia. Exp Hematol Oncol 2018; 7:7. [PMID: 29560286 PMCID: PMC5859504 DOI: 10.1186/s40164-018-0099-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2018] [Accepted: 03/14/2018] [Indexed: 11/30/2022] Open
Abstract
Background Acquired primary chromosomal changes in cancer are sometimes found as sole karyotypic abnormalities. They are specifically associated with particular types of neoplasia, essential in establishing the neoplasm, and they often lead to the generation of chimeric genes of pathogenetic, diagnostic, and prognostic importance. Thus, the report of new primary cancer-specific chromosomal aberrations is not only of scientific but also potentially of clinical interest, as is the detection of their gene-level consequences. Case presentation RNA-sequencing was performed on a bone marrow sample from a patient with myelodysplastic syndrome (MDS). The karyotype was 46,XX,t(7;13)(p14;q12)[2]/46,XX[23]. The MDS later evolved into acute myeloid leukemia (AML) at which point the bone marrow cells also contained additional, secondary aberrations. The 7;13-translocation resulted in fusion of the gene PAN3 from 13q12 with PSMA2 from 7p14 to generate an out-of-frame PAN3–PSMA2 fusion transcript whose presence was verified by RT-PCR together with Sanger sequencing. Interphase fluorescence in situ hybridization analysis confirmed the existence of the chimeric gene. Conclusions The novel t(7;13)(p14;q12)/PAN3–PSMA2 in the neoplastic bone marrow cells could affect two key protein complex: (a) the PAN2/PAN3 complex (PAN3 rearrangement) which is responsible for deadenylation, the process of removing the poly(A) tail from RNA, and (b) the proteasome (PSMA2 rearrangement) which is responsible for degradation of intracellular proteins. The patient showed a favorable response to decitabine after treatment with 5-azacitidine and conventional intensive chemotherapy had failed. Whether this might represent a consistent feature of MDS/AML with this particular gene fusion, remains unknown.
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Affiliation(s)
- Ioannis Panagopoulos
- 1Section for Cancer Cytogenetics, Institute for Cancer Genetics and Informatics, The Norwegian Radium Hospital, Oslo University Hospital, Montebello, PO Box 49534 Nydalen, 0424 Oslo, Norway
| | - Ludmila Gorunova
- 1Section for Cancer Cytogenetics, Institute for Cancer Genetics and Informatics, The Norwegian Radium Hospital, Oslo University Hospital, Montebello, PO Box 49534 Nydalen, 0424 Oslo, Norway
| | - Hege Kilen Andersen
- 1Section for Cancer Cytogenetics, Institute for Cancer Genetics and Informatics, The Norwegian Radium Hospital, Oslo University Hospital, Montebello, PO Box 49534 Nydalen, 0424 Oslo, Norway
| | - Astrid Bergrem
- 2Department of Haematology, Akershus University Hospital, Nordbyhagen, Norway
| | - Anders Dahm
- 2Department of Haematology, Akershus University Hospital, Nordbyhagen, Norway.,3Faculty of Medicine, Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| | - Kristin Andersen
- 1Section for Cancer Cytogenetics, Institute for Cancer Genetics and Informatics, The Norwegian Radium Hospital, Oslo University Hospital, Montebello, PO Box 49534 Nydalen, 0424 Oslo, Norway
| | - Francesca Micci
- 1Section for Cancer Cytogenetics, Institute for Cancer Genetics and Informatics, The Norwegian Radium Hospital, Oslo University Hospital, Montebello, PO Box 49534 Nydalen, 0424 Oslo, Norway
| | - Sverre Heim
- 1Section for Cancer Cytogenetics, Institute for Cancer Genetics and Informatics, The Norwegian Radium Hospital, Oslo University Hospital, Montebello, PO Box 49534 Nydalen, 0424 Oslo, Norway.,3Faculty of Medicine, Institute of Clinical Medicine, University of Oslo, Oslo, Norway
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Rasighaemi P, Ward AC. ETV6 and ETV7: Siblings in hematopoiesis and its disruption in disease. Crit Rev Oncol Hematol 2017; 116:106-115. [PMID: 28693791 DOI: 10.1016/j.critrevonc.2017.05.011] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2017] [Revised: 05/05/2017] [Accepted: 05/28/2017] [Indexed: 01/07/2023] Open
Abstract
ETV6 (TEL1) and ETV7 (TEL2) are closely-related members of the ETS family of transcriptional regulators. Both ETV6 and ETV7 have been demonstrated to play key roles in hematopoiesis, particularly with regard to maintenance of hematopoietic stem cells and control of lineage-specific differentiation, with evidence of functional interactions between both proteins. ETV6 has been strongly implicated in the molecular etiology of a number of hematopoietic diseases, including as a tumor suppressor, an oncogenic fusion partner, and an important regulator of thrombopoiesis, but recent evidence has also identified ETV7 as a potential oncogene in certain malignancies. This review provides an overview of ETV6 and ETV7 and their contribution to both normal and disrupted hematopoiesis. It also highlights the key clinical implications of the growing knowledge base regarding ETV6 abnormalities with respect to prognosis and treatment.
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Affiliation(s)
- Parisa Rasighaemi
- School of Medicine and Centre for Molecular and Medical Research, Deakin University, Geelong, Victoria, 3216, Australia.
| | - Alister C Ward
- School of Medicine and Centre for Molecular and Medical Research, Deakin University, Geelong, Victoria, 3216, Australia.
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Panagopoulos I, Gorunova L, Torkildsen S, Tierens A, Heim S, Micci F. FAM53B truncation caused by t(10;19)(q26;q13) chromosome translocation in acute lymphoblastic leukemia. Oncol Lett 2017; 13:2216-2220. [PMID: 28454383 PMCID: PMC5403202 DOI: 10.3892/ol.2017.5705] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2016] [Accepted: 11/17/2016] [Indexed: 11/18/2022] Open
Abstract
RNA-sequencing of the patient's bone marrow detected fusion transcripts in which the coding sequence of the FAM53B gene (from 10q26) was fused to a genomic sequence (from 19q13) that mapped upstream of the SLC7A10 locus. Reverse transcription-polymerase chain reaction together with Sanger sequencing verified the presence of this fusion transcript. The FAM53B fusion transcript is not expected to produce any chimeric protein. However, it may code for a truncated FAM53B protein consisting of the first 302 amino acids of FAM53B together with amino acids from the 19q13 sequence. Functionally, the truncated FAM53B would be similar to the protein encoded by the FAM53B sequence with accession no. BC031654.1 (FAM53B protein accession no. AAH31654.1). Furthermore, the truncated protein contains the entire conserved domain of the FAM53 protein family. The chromosome aberration t(10;19)(q26;q13) detected in this study was previously reported in a single case of ALL, in which it was also the sole karyotypic change. Both patients entered complete hematological and cytogenetic remission following treatment.
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Affiliation(s)
- Ioannis Panagopoulos
- Section for Cancer Cytogenetics, Institute for Cancer Genetics and Informatics, The Norwegian Radium Hospital, Oslo University Hospital, NO-0424 Oslo, Norway.,Centre for Cancer Biomedicine, Faculty of Medicine, University of Oslo, NO-0424 Oslo, Norway
| | - Ludmila Gorunova
- Section for Cancer Cytogenetics, Institute for Cancer Genetics and Informatics, The Norwegian Radium Hospital, Oslo University Hospital, NO-0424 Oslo, Norway.,Centre for Cancer Biomedicine, Faculty of Medicine, University of Oslo, NO-0424 Oslo, Norway
| | - Synne Torkildsen
- Section for Cancer Cytogenetics, Institute for Cancer Genetics and Informatics, The Norwegian Radium Hospital, Oslo University Hospital, NO-0424 Oslo, Norway.,Centre for Cancer Biomedicine, Faculty of Medicine, University of Oslo, NO-0424 Oslo, Norway.,Department of Hematology, Oslo University Hospital, NO-0424 Oslo, Norway
| | - Anne Tierens
- Laboratory Medicine Program, Department of Haematopathology, University Health Network, Toronto, ON M5G 2C4, Canada
| | - Sverre Heim
- Section for Cancer Cytogenetics, Institute for Cancer Genetics and Informatics, The Norwegian Radium Hospital, Oslo University Hospital, NO-0424 Oslo, Norway.,Centre for Cancer Biomedicine, Faculty of Medicine, University of Oslo, NO-0424 Oslo, Norway.,Faculty of Medicine, University of Oslo, NO-0316 Oslo, Norway
| | - Francesca Micci
- Section for Cancer Cytogenetics, Institute for Cancer Genetics and Informatics, The Norwegian Radium Hospital, Oslo University Hospital, NO-0424 Oslo, Norway.,Centre for Cancer Biomedicine, Faculty of Medicine, University of Oslo, NO-0424 Oslo, Norway
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Zebrafish as a model for leukemia and other hematopoietic disorders. J Hematol Oncol 2015; 8:29. [PMID: 25884214 PMCID: PMC4389495 DOI: 10.1186/s13045-015-0126-4] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2015] [Accepted: 03/11/2015] [Indexed: 01/24/2023] Open
Abstract
Zebrafish is an established model for the study of vertebrate development, and is especially amenable for investigating hematopoiesis, where there is strong conservation of key lineages, genes, and developmental processes with humans. Over recent years, zebrafish has been increasingly utilized as a model for a range of human hematopoietic diseases, including malignancies. This review provides an overview of zebrafish hematopoiesis and describes its application as a model of leukemia and other hematopoietic disorders.
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