1
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Michmerhuizen NL, Klco JM, Mullighan CG. Mechanistic insights and potential therapeutic approaches for NUP98-rearranged hematologic malignancies. Blood 2020; 136:2275-2289. [PMID: 32766874 PMCID: PMC7702474 DOI: 10.1182/blood.2020007093] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Accepted: 07/21/2020] [Indexed: 12/15/2022] Open
Abstract
Nucleoporin 98 (NUP98) fusion oncoproteins are observed in a spectrum of hematologic malignancies, particularly pediatric leukemias with poor patient outcomes. Although wild-type full-length NUP98 is a member of the nuclear pore complex, the chromosomal translocations leading to NUP98 gene fusions involve the intrinsically disordered and N-terminal region of NUP98 with over 30 partner genes. Fusion partners include several genes bearing homeodomains or having known roles in transcriptional or epigenetic regulation. Based on data in both experimental models and patient samples, NUP98 fusion oncoprotein-driven leukemogenesis is mediated by changes in chromatin structure and gene expression. Multiple cofactors associate with NUP98 fusion oncoproteins to mediate transcriptional changes possibly via phase separation, in a manner likely dependent on the fusion partner. NUP98 gene fusions co-occur with a set of additional mutations, including FLT3-internal tandem duplication and other events contributing to increased proliferation. To improve the currently dire outcomes for patients with NUP98-rearranged malignancies, therapeutic strategies have been considered that target transcriptional and epigenetic machinery, cooperating alterations, and signaling or cell-cycle pathways. With the development of more faithful experimental systems and continued study, we anticipate great strides in our understanding of the molecular mechanisms and therapeutic vulnerabilities at play in NUP98-rearranged models. Taken together, these studies should lead to improved clinical outcomes for NUP98-rearranged leukemia.
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Affiliation(s)
| | - Jeffery M Klco
- Department of Pathology, St. Jude Children's Research Hospital, Memphis, TN
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2
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Conserva MR, Anelli L, Zagaria A, Specchia G, Albano F. The Pleiotropic Role of Retinoic Acid/Retinoic Acid Receptors Signaling: From Vitamin A Metabolism to Gene Rearrangements in Acute Promyelocytic Leukemia. Int J Mol Sci 2019; 20:ijms20122921. [PMID: 31207999 PMCID: PMC6627493 DOI: 10.3390/ijms20122921] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2019] [Revised: 06/07/2019] [Accepted: 06/13/2019] [Indexed: 12/18/2022] Open
Abstract
The family of retinoic acid receptors (RARs: RARα, -β, and -γ) has remarkable pleiotropy characteristics, since the retinoic acid/RARs pathway is involved in numerous biological processes not only during embryonic development, but also in the postnatal phase and during adulthood. In this review, we trace the roles of RA/RARs signaling in the immune system (where this pathway has both an immunosuppressive role or is involved in the inflammatory response), in hematopoiesis (enhancing hematopoietic stem cell self-renewal, progenitor cells differentiation or maintaining the bone marrow microenvironment homeostasis), and in bone remodeling (where this pathway seems to have controversial effects on bone formation or osteoclast activation). Moreover, in this review is shown the involvement of RAR genes in multiple chromosomal rearrangements generating different fusion genes in hematological neoplasms, with a particular focus on acute promyelocytic leukemia and its variant subtypes. The effect of different RARs fusion proteins on leukemic transformation, on patients’ outcome, and on therapy response is also discussed.
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Affiliation(s)
- Maria Rosa Conserva
- Department of Emergency and Organ Transplantation (D.E.T.O.), Hematology Section, University of Bari, 70124 Bari, Italy.
| | - Luisa Anelli
- Department of Emergency and Organ Transplantation (D.E.T.O.), Hematology Section, University of Bari, 70124 Bari, Italy.
| | - Antonella Zagaria
- Department of Emergency and Organ Transplantation (D.E.T.O.), Hematology Section, University of Bari, 70124 Bari, Italy.
| | - Giorgina Specchia
- Department of Emergency and Organ Transplantation (D.E.T.O.), Hematology Section, University of Bari, 70124 Bari, Italy.
| | - Francesco Albano
- Department of Emergency and Organ Transplantation (D.E.T.O.), Hematology Section, University of Bari, 70124 Bari, Italy.
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3
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Matte-Martone C, Liu J, Zhou M, Chikina M, Green DR, Harty JT, Shlomchik WD. Differential requirements for myeloid leukemia IFN-γ conditioning determine graft-versus-leukemia resistance and sensitivity. J Clin Invest 2017; 127:2765-2776. [PMID: 28604385 DOI: 10.1172/jci85736] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2015] [Accepted: 04/20/2017] [Indexed: 12/25/2022] Open
Abstract
The graft-versus-leukemia (GVL) effect in allogeneic hematopoietic stem cell transplantation (alloSCT) is potent against chronic phase chronic myelogenous leukemia (CP-CML), but blast crisis CML (BC-CML) and acute myeloid leukemias (AML) are GVL resistant. To understand GVL resistance, we studied GVL against mouse models of CP-CML, BC-CML, and AML generated by the transduction of mouse BM with fusion cDNAs derived from human leukemias. Prior work has shown that CD4+ T cell-mediated GVL against CP-CML and BC-CML required intact leukemia MHCII; however, stem cells from both leukemias were MHCII negative. Here, we show that CP-CML, BC-CML, and AML stem cells upregulate MHCII in alloSCT recipients. Using gene-deficient leukemias, we determined that BC-CML and AML MHC upregulation required IFN-γ stimulation, whereas CP-CML MHC upregulation was independent of both the IFN-γ receptor (IFN-γR) and the IFN-α/β receptor IFNAR1. Importantly, IFN-γR-deficient BC-CML and AML were completely resistant to CD4- and CD8-mediated GVL, whereas IFN-γR/IFNAR1 double-deficient CP-CML was fully GVL sensitive. Mouse AML and BC-CML stem cells were MHCI+ without IFN-γ stimulation, suggesting that IFN-γ sensitizes these leukemias to T cell killing by mechanisms other than MHC upregulation. Our studies identify the requirement of IFN-γ stimulation as a mechanism for BC-CML and AML GVL resistance, whereas independence from IFN-γ renders CP-CML more GVL sensitive, even with a lower-level alloimmune response.
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Affiliation(s)
| | - Jinling Liu
- Department of Medicine, University of Pittsburgh School of Medicine, University of Pittsburgh Cancer Institute, Pittsburgh, Pennsylvania, USA
| | - Meng Zhou
- Department of Medicine, University of Pittsburgh School of Medicine, University of Pittsburgh Cancer Institute, Pittsburgh, Pennsylvania, USA
| | - Maria Chikina
- Department of Computational Systems Biology, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Douglas R Green
- Department of Immunology, St. Jude Children's Research Hospital, Memphis Tennessee, USA
| | - John T Harty
- Department of Microbiology and Pathology, University of Iowa, Iowa City, Iowa, USA.,Department of Immunobiology, Yale University School of Medicine, New Haven, Connecticut, USA
| | - Warren D Shlomchik
- Department of Medicine, University of Pittsburgh School of Medicine, University of Pittsburgh Cancer Institute, Pittsburgh, Pennsylvania, USA.,Department of Microbiology and Pathology, University of Iowa, Iowa City, Iowa, USA.,Department of Immunobiology, Yale University School of Medicine, New Haven, Connecticut, USA
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4
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Pan M, Zhang Q, Liu P, Huang J, Wang Y, Chen S. Inhibition of the nuclear export of p65 and IQCG in leukemogenesis by NUP98-IQCG. Front Med 2016; 10:410-419. [PMID: 27864780 DOI: 10.1007/s11684-016-0489-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2016] [Accepted: 09/29/2016] [Indexed: 01/04/2023]
Abstract
NUP98 fuses with approximately 34 different partner genes via translocation in hematological malignancies. Transgenic or retrovirus-mediated bone marrow transplanted mouse models reveal the leukemogenesis of some NUP98-related fusion genes. We previously reported the fusion protein NUP98-IQ motif containing G (IQCG) in a myeloid/T lymphoid bi-phenoleukemia patient with t(3;11) and confirmed its leukemogenic ability. Herein, we demonstrated the association of NUP98-IQCG with CRM1, and found that NUP98-IQCG expression inhibits the CRM1-mediated nuclear export of p65 and enhances the transcriptional activity of nuclear factor-κB. Moreover, IQCG could be entrapped in the nucleus by NUP98-IQCG, and the fusion protein interacts with calmodulin via the IQ motif in a calcium-independent manner. Therefore, the inhibition of nuclear exports of p65 and IQCG might contribute to the leukemogenesis of NUP98-IQCG.
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Affiliation(s)
- Mengmeng Pan
- State Key Laboratory of Medical Genomics, Shanghai Institute of Hematology, Rui Jin Hospital Affiliated to Shanghai Jiao Tong University (SJTU) School of Medicine, Shanghai, 200025, China
| | - Qiyao Zhang
- State Key Laboratory of Medical Genomics, Shanghai Institute of Hematology, Rui Jin Hospital Affiliated to Shanghai Jiao Tong University (SJTU) School of Medicine, Shanghai, 200025, China
- Institute of Health Sciences, Shanghai Institutes for Biological Sciences and Graduate School, Chinese Academy of Sciences and SJTU School of Medicine, Shanghai, 200025, China
| | - Ping Liu
- State Key Laboratory of Medical Genomics, Shanghai Institute of Hematology, Rui Jin Hospital Affiliated to Shanghai Jiao Tong University (SJTU) School of Medicine, Shanghai, 200025, China
| | - Jinyan Huang
- State Key Laboratory of Medical Genomics, Shanghai Institute of Hematology, Rui Jin Hospital Affiliated to Shanghai Jiao Tong University (SJTU) School of Medicine, Shanghai, 200025, China
| | - Yueying Wang
- State Key Laboratory of Medical Genomics, Shanghai Institute of Hematology, Rui Jin Hospital Affiliated to Shanghai Jiao Tong University (SJTU) School of Medicine, Shanghai, 200025, China.
| | - Saijuan Chen
- State Key Laboratory of Medical Genomics, Shanghai Institute of Hematology, Rui Jin Hospital Affiliated to Shanghai Jiao Tong University (SJTU) School of Medicine, Shanghai, 200025, China.
- Institute of Health Sciences, Shanghai Institutes for Biological Sciences and Graduate School, Chinese Academy of Sciences and SJTU School of Medicine, Shanghai, 200025, China.
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5
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Braekeleer ED, Douet-Guilbert N, Basinko A, Bris MJL, Morel F, Braekeleer MD. Hox gene dysregulation in acute myeloid leukemia. Future Oncol 2014; 10:475-95. [DOI: 10.2217/fon.13.195] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
ABSTRACT: In humans, class I homeobox genes (HOX genes) are distributed in four clusters. Upstream regulators include transcriptional activators and members of the CDX family of transcription factors. HOX genes encode proteins and need cofactor interactions, to increase their specificity and selectivity. HOX genes contribute to the organization and regulation of hematopoiesis by controlling the balance between proliferation and differentiation. Changes in HOX gene expression can be associated with chromosomal rearrangements generating fusion genes, such as those involving MLL and NUP98, or molecular defects, such as mutations in NPM1 and CEBPA for example. Several miRNAs are involved in the control of HOX gene expression and their expression correlates with HOX gene dysregulation. HOX genes dysregulation is a dominant mechanism of leukemic transformation. A better knowledge of their target genes and the mechanisms by which their dysregulated expression contributes to leukemogenesis could lead to the development of new drugs.
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Affiliation(s)
- Etienne De Braekeleer
- Laboratoire d’Histologie, Embryologie et Cytogénétique, Faculté de Médecine et des Sciences de la Santé, Université de Brest, Brest, France
| | - Nathalie Douet-Guilbert
- Laboratoire d’Histologie, Embryologie et Cytogénétique, Faculté de Médecine et des Sciences de la Santé, Université de Brest, Brest, France
| | - Audrey Basinko
- Laboratoire d’Histologie, Embryologie et Cytogénétique, Faculté de Médecine et des Sciences de la Santé, Université de Brest, Brest, France
| | - Marie-Josée Le Bris
- Service de Cytogénétique, Cytologie et Biologie de la Reproduction, Hôpital Morvan, CHRU Brest, Brest, France
| | - Frédéric Morel
- Laboratoire d’Histologie, Embryologie et Cytogénétique, Faculté de Médecine et des Sciences de la Santé, Université de Brest, Brest, France
| | - Marc De Braekeleer
- Laboratoire d’Histologie, Embryologie et Cytogénétique, Faculté de Médecine et des Sciences de la Santé, Université de Brest, Brest, France
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6
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The fusion partner specifies the oncogenic potential of NUP98 fusion proteins. Leuk Res 2013; 37:1668-73. [PMID: 24090997 DOI: 10.1016/j.leukres.2013.09.013] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2013] [Revised: 08/26/2013] [Accepted: 09/12/2013] [Indexed: 02/06/2023]
Abstract
NUP98 is among the most promiscuously translocated genes in hematological diseases. Among the 28 known fusion partners, there are two categories: homeobox genes and non-homeobox genes. The homeobox fusion partners are well-studied in animal models, resulting in HoxA cluster overexpression and hematological disease. The non-homeobox fusion partners are less well studied. We created transgenic animal models for three NUP98 fusion genes (one homeobox, two non-homeobox), and show that in this system, the NUP98-homeobox fusion promotes self-renewal and aberrant gene expression to a significantly greater extent. We conclude that homeobox partners create more potent NUP98 fusion oncogenes than do non-homeobox partners.
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7
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Abstract
Structural chromosomal rearrangements of the Nucleoporin 98 gene (NUP98), primarily balanced translocations and inversions, are associated with a wide array of hematopoietic malignancies. NUP98 is known to be fused to at least 28 different partner genes in patients with hematopoietic malignancies, including acute myeloid leukemia, chronic myeloid leukemia in blast crisis, myelodysplastic syndrome, acute lymphoblastic leukemia, and bilineage/biphenotypic leukemia. NUP98 gene fusions typically encode a fusion protein that retains the amino terminus of NUP98; in this context, it is important to note that several recent studies have demonstrated that the amino-terminal portion of NUP98 exhibits transcription activation potential. Approximately half of the NUP98 fusion partners encode homeodomain proteins, and at least 5 NUP98 fusions involve known histone-modifying genes. Several of the NUP98 fusions, including NUP98-homeobox (HOX)A9, NUP98-HOXD13, and NUP98-JARID1A, have been used to generate animal models of both lymphoid and myeloid malignancy; these models typically up-regulate HOXA cluster genes, including HOXA5, HOXA7, HOXA9, and HOXA10. In addition, several of the NUP98 fusion proteins have been shown to inhibit differentiation of hematopoietic precursors and to increase self-renewal of hematopoietic stem or progenitor cells, providing a potential mechanism for malignant transformation.
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8
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Such E, Cervera J, Valencia A, Barragán E, Ibañez M, Luna I, Fuster O, Perez-Sirvent ML, Senent L, Sempere A, Martinez J, Martín-Aragonés G, Sanz MA. A novel NUP98/RARG gene fusion in acute myeloid leukemia resembling acute promyelocytic leukemia. Blood 2011; 117:242-5. [PMID: 20935257 DOI: 10.1182/blood-2010-06-291658] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Abstract
Chromosomal translocations in hematological malignancies often result in novel fusion chimeric genes. We report a case of acute myeloid leukemia with a clonal translocation t(11;12)(p15;q13) displaying morphologic and immunophenotypic features resembling the classical hypergranular subtype of acute promyelocytic leukemia. The gene fused to NUP98 (nucleoporin 98) was detected by comparative genomic hybridization array as the retinoid acid receptor gamma gene (RARG). The involvement of RARG in a chimeric fusion transcript has not been reported previously in human leukemia.
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MESH Headings
- Adult
- Chromosomes, Human, Pair 11/genetics
- Chromosomes, Human, Pair 12/genetics
- Comparative Genomic Hybridization
- Diagnosis, Differential
- Gene Fusion
- Humans
- Immunophenotyping
- Leukemia, Myeloid, Acute/diagnosis
- Leukemia, Myeloid, Acute/genetics
- Leukemia, Promyelocytic, Acute/diagnosis
- Leukemia, Promyelocytic, Acute/genetics
- Male
- Nuclear Pore Complex Proteins/genetics
- Oligonucleotide Array Sequence Analysis
- Oncogene Proteins, Fusion/genetics
- Receptors, Retinoic Acid/genetics
- Translocation, Genetic
- Retinoic Acid Receptor gamma
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Affiliation(s)
- Esperanza Such
- Department of Hematology, Hospital Universitario La Fe, Valencia, Spain
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9
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Reader JC, Leng Q, Rassool FV, Ning Y. Regulation of differentiation by a PHD domain in the NUP98-PHF23 fusion protein. Leuk Res 2010; 34:1094-7. [PMID: 20219246 DOI: 10.1016/j.leukres.2010.02.015] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2009] [Revised: 02/12/2010] [Accepted: 02/13/2010] [Indexed: 02/02/2023]
Abstract
Acute myeloid leukemia (AML) is frequently associated with chromosomal translocations. These translocations produce specific fusion genes that play crucial roles in leukemogenesis. We recently identified a novel NUP98-PHF23 fusion in AML. In this study, we attempt to determine the role of NUP98-PHF23 protein and its plant homeodomain (PHD) and coiled-coil domain in regulation of cellular differentiation and protein distribution. We provide evidence that NUP98-PHF23, through its PHD domain, impairs TPA-induced differentiation of K562 cells. While the fusion protein localizes to the nucleus, its deletion mutant without the PHD domain resides exclusively in the nucleolus, suggesting a potential link between chromatin-binding PHD domain and nuclear architecture.
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Affiliation(s)
- Jocelyn C Reader
- Department of Pathology, University of Maryland, School of Medicine, 10 S. Pine St., MSTF-717, Baltimore, MD, USA
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10
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Abstract
Chromosomal aberrations occur with great frequency and some specificity in leukemia and other hematologic malignancies. The most common outcome of these rearrangements is the formation of a fusion gene, comprising portions of 2 genes normally present in the cell. These fusion proteins are presumed to be oncogenic; in many cases, animal models have proven them to be oncogenic. One of the most promiscuous fusion partner genes is the newly identified NUP98 gene, located on chromosome 11p15.5, which to date has been observed fused to 15 different fusion partners. NUP98 encodes a 98 kD protein that is an important component of the nuclear pore complex, which mediates nucleo-cytoplasmic transport of protein and RNA. The fusion partners of NUP98 form 2 distinct groups: homeobox genes and non-homeobox genes. All NUP98 fusions join the N-terminal GLFG repeats of NUP98 to the C-terminal portion of the partner gene, which, in the case of the homeobox gene partners, includes the homeodomain. Clinical findings are reviewed here, along with the findings of several in vivo and in vitro models have been employed to investigate the mechanisms by which NUP98 fusion genes contribute to the pathogenesis of leukemia.
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MESH Headings
- Acute Disease
- Antineoplastic Agents/pharmacology
- Cell Transformation, Neoplastic/genetics
- Chromosome Breakage
- Chromosomes, Human, Pair 11/genetics
- DNA Topoisomerases, Type II/physiology
- Enzyme Inhibitors/pharmacology
- Genes, Homeobox
- Hematologic Neoplasms/genetics
- Hematologic Neoplasms/metabolism
- Homeodomain Proteins/genetics
- Homeodomain Proteins/physiology
- Humans
- Leukemia/genetics
- Leukemia/metabolism
- Models, Genetic
- Neoplasm Proteins/genetics
- Neoplasm Proteins/physiology
- Nuclear Pore/physiology
- Nuclear Pore Complex Proteins/genetics
- Nuclear Pore Complex Proteins/physiology
- Oncogene Proteins, Fusion/genetics
- Oncogene Proteins, Fusion/physiology
- Protein Structure, Tertiary
- Topoisomerase II Inhibitors
- Translocation, Genetic
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Affiliation(s)
- Christopher Slape
- Genetics Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Navy 8, Room 5101, Bethesda, Maryland, MD 20889-5105, USA
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11
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Zhang L, Alsabeh R, Mecucci C, La Starza R, Gorello P, Lee S, Lill M, Schreck R. Rare t(1;11)(q23;p15) in therapy-related myelodysplastic syndrome evolving into acute myelomonocytic leukemia: a case report and review of the literature. ACTA ACUST UNITED AC 2007; 178:42-8. [PMID: 17889707 DOI: 10.1016/j.cancergencyto.2007.06.012] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2006] [Revised: 06/13/2007] [Accepted: 06/22/2007] [Indexed: 11/30/2022]
Abstract
Balanced chromosome rearrangements are the hallmark of therapy-related leukemia that develops in patients treated with topoisomerase II inhibitors. Many of these rearrangements involve recurrent chromosomal sites and associated genes (11q23/MLL, 21q22.3/AML1, and 11p15/NUP98), which can interact with a variety of partner genes. One such rearrangement is the rare t(1;11)(q23;p15), which involves juxtaposition of the homeobox gene PMX1 (PRRX1) and NUP98. We report on an additional patient with t(1;11) who presented with myelodysplastic syndrome (MDS) subsequent to treatment for a pleomorphic liposarcoma. With time, the patient's disorder progressed to acute myelomonocytic leukemia with cytogenetic evidence of clonal evolution. To our knowledge, this is the first report of a patient presenting with a myelodysplastic syndrome with isolated t(1;11) (q23;p15), which evolved into therapy-related acute myeloid leukemia (t-AML). This patient is the third reported with this cytogenetic rearrangement and t-AML, and is compared with the other two reports of t(1;11)(q23;p15).
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Affiliation(s)
- Ling Zhang
- Department of Pathology and Laboratory, Cedars Sinai Medical Center, 8700 Beverly Boulevard, Room 4711, Los Angeles, CA 90048, USA.
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12
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Barbara KE, Willis KA, Haley TM, Deminoff SJ, Santangelo GM. Coiled coil structures and transcription: an analysis of the S. cerevisiae coilome. Mol Genet Genomics 2007; 278:135-47. [PMID: 17476531 DOI: 10.1007/s00438-007-0237-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2007] [Accepted: 03/22/2007] [Indexed: 12/25/2022]
Abstract
The alpha-helical coiled coil is a simple but widespread motif that is an integral feature of many cellular structures. Coiled coils allow monomeric building blocks to form complex assemblages that can serve as molecular motors and springs. Previous parametrically delimited analyses of the distribution of coiled coils in the genomes of diverse organisms, including Escherichia coli, Saccharomyces cerevisiae, Arabidopsis thaliana, Caenorhabditis elegans and Homo sapiens, have identified conserved biological processes that make use of this versatile motif. Here we present a comprehensive inventory of the set of coiled coil proteins in S. cerevisiae by combining multiple coiled coil prediction algorithms with extensive literature curation. Our analysis of this set of proteins, which we call the coilome, reveals a wider role for this motif in transcription than was anticipated, particularly with respect to the category that includes nucleocytoplasmic shuttling factors involved in transcriptional regulation. We also show that the constitutively nuclear yeast transcription factor Gcr1 is homologous to the mammalian transcription factor MLL3, and that two coiled coil domains conserved between these homologs are important for Gcr1 dimerization and function. These data support the hypothesis that coiled coils are required to assemble structures essential for proper functioning of the transcriptional machinery.
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Affiliation(s)
- Kellie E Barbara
- Mississippi Functional Genomics Network, The University of Southern Mississippi, Hattiesburg, MS, USA
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13
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Huang TS, Myklebust LM, Kjarland E, Gjertsen BT, Pendino F, Bruserud Ø, Døskeland SO, Lillehaug JR. LEDGF/p75 has increased expression in blasts from chemotherapy-resistant human acute myelogenic leukemia patients and protects leukemia cells from apoptosis in vitro. Mol Cancer 2007; 6:31. [PMID: 17451600 PMCID: PMC1876472 DOI: 10.1186/1476-4598-6-31] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2007] [Accepted: 04/23/2007] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Relapse due to chemoresistant residual disease is a major cause of death in acute myelogenous leukemia (AML). The present study was undertaken to elucidate the molecular mechanisms of chemoresistance by comparing differential gene expression in blasts from patients with resistant relapsing AML and chemosensitive AML. RESULTS About 20 genes were identified as preferentially expressed in blasts pooled from patients with resistant disease, as compared to chemosensitive AML blasts, based on differential gene expression screening. Half of these genes encoded proteins related to protein translation, of these a novel protein related to the ribosomal stalk protein P0. Other upregulated mRNAs coded for cytochrome C oxidase III, the transcription factors ERF-2/TIS11d, and the p75 and p52 splice variants of Lens Epithelial Derived Growth Factor (LEDGF). Analysis of blasts from single patients disclosed that LEDGF/p75 was the most consistently upregulated mRNA in resistant AML. Transfection experiments demonstrated that LEDGF/p75 and p52b antagonized daunorubicin-induced and cAMP-induced apoptosis in an AML cell line. Also HEK-293 cells were protected against daunorubicin by LEDGF/p75 and p52b, whereas LEDGF/p52 splice variants lacking exon 6 had proapoptotic effects. Interestingly, full length LEDGF/p75 protected against truncated pro-apoptotic LEDGF/p75. CONCLUSION Our results provide evidence for an association between the overexpression of genes encoding survival proteins like LEDGF/p75 and chemo-resistance in acute myelogenous leukemia. LEDGF/p75 has previously not been shown to protect against chemotherapy, and is a potential drug target in AML.
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MESH Headings
- Alternative Splicing/drug effects
- Alternative Splicing/genetics
- Amino Acid Sequence
- Apoptosis/drug effects
- Base Sequence
- Cell Line, Tumor
- Cyclic AMP/analogs & derivatives
- Cyclic AMP/pharmacology
- Daunorubicin/pharmacology
- Drug Resistance, Neoplasm/genetics
- Exons/genetics
- Gene Expression Regulation, Neoplastic/drug effects
- Genes, Neoplasm
- Humans
- Intercellular Signaling Peptides and Proteins/chemistry
- Intercellular Signaling Peptides and Proteins/genetics
- Intercellular Signaling Peptides and Proteins/metabolism
- Leukemia, Myeloid, Acute/genetics
- Leukemia, Myeloid, Acute/pathology
- Lymphocyte Activation/genetics
- Molecular Sequence Data
- Neoplasm Recurrence, Local
- Proto-Oncogene Proteins c-bcl-2/metabolism
- RNA, Messenger/genetics
- RNA, Messenger/metabolism
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Affiliation(s)
- Tien-sheng Huang
- Department of Molecular Biology, University of Bergen, Bergen, Norway
- Department of Biomedicine, University of Bergen, Bergen, Norway
- Gades Institute and Department of Pathology, University of Bergen, Bergen, Norway
| | - Line M Myklebust
- Department of Molecular Biology, University of Bergen, Bergen, Norway
| | - Endre Kjarland
- Department of Biomedicine, University of Bergen, Bergen, Norway
| | - Bjørn Tore Gjertsen
- Institute of Medicine, Hematology Section, Haukeland University Hospital, Bergen, Norway
| | - Frederic Pendino
- Department of Molecular Biology, University of Bergen, Bergen, Norway
| | - Øystein Bruserud
- Institute of Medicine, Hematology Section, Haukeland University Hospital, Bergen, Norway
| | | | - Johan R Lillehaug
- Department of Molecular Biology, University of Bergen, Bergen, Norway
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14
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Moore MAS, Chung KY, Plasilova M, Schuringa JJ, Shieh JH, Zhou P, Morrone G. NUP98 Dysregulation in Myeloid Leukemogenesis. Ann N Y Acad Sci 2007; 1106:114-42. [PMID: 17442773 DOI: 10.1196/annals.1392.019] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Nucleoporin 98 (NUP98) is a component of the nuclear pore complex that facilitates mRNA export from the nucleus. It is mapped to 11p15.5 and is fused to a number of distinct partners, including nine members of the homeobox family as a consequence of leukemia-associated chromosomal translocations. NUP98-HOXA9 is associated with the t(7;11)(p15;p15) translocation in acute myeloid leukemia (AML), myelodysplastic syndrome, and blastic crisis of chronic myeloid leukemia. Expression of NUP98-HOXA9 in murine bone marrow resulted in a myeloproliferative disease progressing to AML by 7-8 months. Transduction of NUP98 fusion genes into human CD34(+) cells confers a proliferative advantage in long-term cytokine-stimulated and stromal cocultures and in NOD-SCID engrafted mice, associated with a five- to eight-fold increase in hematopoietic stem cells. NUP98-HOXA9 expression inhibited erythroid and myeloid differentiation but enhanced serial progenitor replating. NUP98-HOXA9 upregulated a number of homeobox genes of the A and B cluster as well as MEIS1 and Pim-1, and downmodulated globin genes and C/EBPalpha. The HOXA9 component of the NUP98-HOXA9 fusion protein was protected from cullin-4A-mediated ubiquitination and subsequent proteasome-dependent degradation. In NUP98-HOX-transduced CD34(+) cells and cells from AML patients with t(7;11)(p15;p15) NUP98 was no longer associated with the nuclear pore complex but formed intranuclear aggregation bodies. Analysis of NUP98 allelic expression in AML and myelodysplastic syndrome showed loss of heterozygosity observed in 29% of the former and 8% of the latter. This was associated with poor prognosis.
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MESH Headings
- Alleles
- Animals
- Antigens, CD34/biosynthesis
- Cell Nucleus/metabolism
- Chromosomes, Human, Pair 11
- Chromosomes, Human, Pair 7
- Gene Expression Regulation, Neoplastic
- Humans
- Leukemia, Myeloid, Acute/genetics
- Leukemia, Myeloid, Acute/metabolism
- Loss of Heterozygosity
- Mice
- Mice, Inbred NOD
- Mice, SCID
- Myelodysplastic Syndromes/genetics
- Myelodysplastic Syndromes/metabolism
- Nuclear Pore Complex Proteins/physiology
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Affiliation(s)
- M A S Moore
- Moore Laboratory, Cell Biology Program, Memorial Sloan-Kettering Cancer Center, New York, NY 10021, USA.
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15
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Reader JC, Meekins JS, Gojo I, Ning Y. A novel NUP98-PHF23 fusion resulting from a cryptic translocation t(11;17)(p15;p13) in acute myeloid leukemia. Leukemia 2007; 21:842-4. [PMID: 17287853 DOI: 10.1038/sj.leu.2404579] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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16
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Nebral K, Schmidt HH, Haas OA, Strehl S. NUP98 Is Fused to Topoisomerase (DNA) IIβ 180 kDa (TOP2B) in a Patient with Acute Myeloid Leukemia with a New t(3;11)(p24;p15). Clin Cancer Res 2005; 11:6489-94. [PMID: 16166424 DOI: 10.1158/1078-0432.ccr-05-0150] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
PURPOSE The nucleoporin 98 kDa (NUP98) gene has been reported to be fused to 17 different partner genes in various hematologic malignancies with 11p15 aberrations. Cytogenetic analysis of an adult de novo acute myelogenous leukemia (M5a) revealed a t(3;11)(p24;p15), suggesting rearrangement of NUP98 with a novel partner gene. EXPERIMENTAL DESIGN Fluorescence in situ hybridization (FISH) was used to confirm the involvement of NUP98 in the t(3;11)(p24;p15). Selection of possible NUP98 partner genes was done by computer-aided analysis of the 3p24 region using the University of California Santa Cruz genome browser. Fusion gene-specific FISH and reverse transcription-PCR analyses were done to verify the presence of the new NUP98 fusion. RESULTS FISH analysis using a NUP98-specific clone showed a split signal, indicating that the NUP98 gene was affected by the translocation. Of the genes localized at 3p24, TOP2B was selected as a possible fusion partner candidate gene. Dual-color fusion gene-specific FISH and reverse transcription-PCR analysis verified that NUP98 was indeed fused to TOP2B. In addition to reciprocal NUP98-TOP2B and TOP2B-NUP98 in-frame fusion transcripts, an alternatively spliced out-of-frame TOP2B-NUP98 transcript that resulted in a premature stop codon was detected. Analysis of the genomic breakpoints revealed typical signs of nonhomologous end joining resulting from error-prone DNA repair. CONCLUSIONS TOP2B encodes a type II topoisomerase, which is involved in DNA transcription, replication, recombination, and mitosis, and besides TOP1, represents the second NUP98 fusion partner gene that belongs to the topoisomerase gene family. This finding emphasizes the important role of topoisomerases in malignant transformation processes.
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MESH Headings
- Acute Disease
- Amino Acid Sequence
- Base Sequence
- Chromosomes, Human, Pair 11/genetics
- Chromosomes, Human, Pair 3/genetics
- DNA Topoisomerases, Type II/genetics
- DNA-Binding Proteins/genetics
- Humans
- In Situ Hybridization, Fluorescence
- Leukemia, Myeloid/genetics
- Male
- Middle Aged
- Molecular Sequence Data
- Nuclear Pore Complex Proteins/genetics
- Oncogene Proteins, Fusion/genetics
- Poly-ADP-Ribose Binding Proteins
- RNA, Neoplasm/genetics
- RNA, Neoplasm/metabolism
- Reverse Transcriptase Polymerase Chain Reaction
- Sequence Homology, Nucleic Acid
- Translocation, Genetic
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Affiliation(s)
- Karin Nebral
- Children's Cancer Research Institute, Vienna, Austria
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17
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Nakamura T. NUP98 Fusion in Human Leukemia: Dysregulation of the Nuclear Pore and Homeodomain Proteins. Int J Hematol 2005; 82:21-7. [PMID: 16105755 DOI: 10.1532/ijh97.04160] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
NUP98 is fused to a variety of partner genes, including abdominal B-like HOX, in human myeloid and T-cell malignancies via chromosomal translocation involving 11p15. NUP98 encodes a 98-kd nucleoporin that is a component of the nuclear pore complex and functions in nucleocytoplasmic transport, with its N-terminal GLFG repeats used as a docking site for karyopherins. Disruption of NUP98 may affect the nuclear pore function, and the abnormal expression and altered function of fusion partners may also be critical for leukemia development. Recent studies using mouse models expressing NUP98-HOX have confirmed its leukemogenic potential, and cooperative genes for NUP98-HOXA9 in leukemogenesis have been identified in these studies.Thus, the NUP98 chimera is a unique molecule that provides valuable information regarding nuclear pore function and the role of the homeobox protein in leukemogenesis/carcinogenesis.
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Affiliation(s)
- Takuro Nakamura
- Department of Carcinogenesis, The Cancer Institute, Japanese Foundation for Cancer Research, Tokyo, Japan.
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18
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Moore MAS. Converging pathways in leukemogenesis and stem cell self-renewal. Exp Hematol 2005; 33:719-37. [PMID: 15963848 DOI: 10.1016/j.exphem.2005.04.011] [Citation(s) in RCA: 70] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2005] [Accepted: 04/29/2005] [Indexed: 12/11/2022]
Abstract
Studies over the last 40 years have led to an understanding of the hierarchical organization of the hematopoietic system and the role of the pluripotential hematopoietic stem cell. Earlier recognition of the importance of bone marrow hematopoietic microenvironments has evolved into the recognition of specific niches that regulate stem cell pool size, proliferative status, mobilization, and differentiation. The discovery of the role of multiple hematopoietic growth factors and their receptors in the orchestration of stem cell self-renewal and differentiation has been followed by recognition of the importance of the Notch and Wnt pathways. The homeobox family of transcription factors serve as master regulators of development and are increasingly found to be critical regulators of hematopoiesis. In parallel with this understanding of normal hematopoiesis has come a recognition that stem cell dysregulation at various levels is involved in leukemogenesis. Furthermore, the progression from chronic leukemia or myelodysplasia to acute leukemia involves accumulation of at least two mutational events that lead to enhancement of stem cell proliferation, or acquisition of stem cell behavior by a progenitor cell, coupled with maturation inhibition. Translocations resulting in development of oncogenic fusion genes are found in AML and the transforming potential of two of these, AML1-ETO and NUP98-HOXA9, will be discussed. Secondary, constitutively activating mutations of the Flt3 and c-kit receptors and of K- and N-ras are found with high frequency in AML, and the transforming potential of mutated FLT3 and the role of STAT5A activation in human stem cell transformation will be reviewed.
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Affiliation(s)
- Malcolm A S Moore
- James Ewing Laboratory of Developmental Hematopoiesis, Cell Biology Program, Memorial Sloan-Kettering Cancer Center, New York, NY, USA.
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19
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Grand FH, Koduru P, Cross NCP, Allen SL. NUP98-LEDGF fusion and t(9;11) in transformed chronic myeloid leukemia. Leuk Res 2005; 29:1469-72. [PMID: 15982735 DOI: 10.1016/j.leukres.2005.05.002] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2005] [Accepted: 04/28/2005] [Indexed: 10/25/2022]
Abstract
The molecular basis for disease progression in chronic myeloid leukaemia (CML) is poorly understood, but is believed to be a consequence of additional acquired genetic lesions. We describe here a case of CML who presented de novo in transformation with a t(9;11)(p21;p15) and NUP98-LEDGF fusion in addition to the t(9;22). The t(9;11) was present in only 2/45 (4%) of bone marrow metaphases, but 17/20 (85%) of metaphases from peripheral blood, suggesting an extramedullary or focal origin. This is the first description of NUP98-LEDGF in CML and strengthens the association between disease progression in and NUP98 abnormalities.
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MESH Headings
- Adult
- Cell Transformation, Neoplastic/genetics
- Chromosomes, Human, Pair 11
- Chromosomes, Human, Pair 9
- Cytogenetic Analysis
- Disease Progression
- Humans
- Leukemia, Myelogenous, Chronic, BCR-ABL Positive/genetics
- Leukemia, Myelogenous, Chronic, BCR-ABL Positive/pathology
- Male
- Oncogene Proteins, Fusion/analysis
- Translocation, Genetic
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20
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Yamamoto M, Kakihana K, Kurosu T, Murakami N, Miura O. Clonal evolution with inv(11)(p15q22) and NUP98/DDX10 fusion gene in imatinib-resistant chronic myelogenous leukemia. ACTA ACUST UNITED AC 2005; 157:104-8. [PMID: 15721630 DOI: 10.1016/j.cancergencyto.2004.06.014] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2004] [Revised: 06/18/2004] [Accepted: 06/22/2004] [Indexed: 11/22/2022]
Abstract
The BCR/ABL tyrosine kinase inhibitor imatinib has shown remarkable efficacy in treating patients with chronic myelogenous leukemia (CML). In a small portion of patients treated with imatinib, however, the disease may progress to advanced stages, frequently accompanied by cytogenetic clonal evolution with the appearance of additional chromosomal aberrations besides the Philadelphia chromosome. Here we report the appearance of an inv(11)(p15q22) as a clonal evolution in a CML patient undergoing treatment with imatinib. Leukemic cells from the patient were found to express the fusion transcript of NUP98 and DDX10, which is in accordance with previously reported cases of de novo or therapy-related acute myelogenous leukemia and myelodysplastic syndrome with inv(11)(p15q22). Although the patient showed resistance to imatinib with the disease rapidly progressing to blast crisis, sequence analysis failed to reveal any mutation in the kinase domain of BCR/ABL that would explain the imatinib resistance. Furthermore, ex vivo treatment of leukemic cells with imatinib significantly reduced tyrosine phosphorylation of CrkL, a target of the BCR/ABL kinase. These observations raise a possibility that the NUP98/DDX10 fusion might be involved in imatinib resistance as well as in acute transformation of CML.
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MESH Headings
- Antineoplastic Agents/therapeutic use
- Benzamides
- Chromosome Inversion
- Chromosomes, Human, Pair 11
- DEAD-box RNA Helicases
- Drug Resistance, Neoplasm
- Humans
- Imatinib Mesylate
- Karyotyping
- Leukemia, Myelogenous, Chronic, BCR-ABL Positive/drug therapy
- Leukemia, Myelogenous, Chronic, BCR-ABL Positive/genetics
- Male
- Middle Aged
- Nuclear Pore Complex Proteins/genetics
- Oncogene Proteins, Fusion/genetics
- Piperazines/therapeutic use
- Pyrimidines/therapeutic use
- RNA Helicases
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Affiliation(s)
- Masahide Yamamoto
- Department of Hematology and Oncology, Tokyo Medical and Dental University, Yushima 1-5-45, Bunkyo-ku, Tokyo 113-8519, Japan
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21
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Eguchi M, Eguchi-Ishimae M, Greaves M. The small oligomerization domain of gephyrin converts MLL to an oncogene. Blood 2004; 103:3876-82. [PMID: 14751928 DOI: 10.1182/blood-2003-11-3817] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
AbstractThe MLL (mixed lineage leukemia) gene forms chimeric fusions with a diverse set of partner genes as a consequence of chromosome translocations in leukemia. In several fusion partners, a transcriptional activation domain appears to be essential for conferring leukemogenic capacity on MLL protein. Other fusion partners, however, lack such domains. Here we show that gephyrin (GPHN), a neuronal receptor assembly protein and rare fusion partner of MLL in leukemia, has the capacity as an MLL-GPHN chimera to transform hematopoietic progenitors, despite lack of transcriptional activity. A small 15–amino acid tubulin-binding domain of GPHN is necessary and sufficient for this activity in vitro and in vivo. This domain also confers oligomerization capacity on MLL protein, suggesting that such activity may contribute critically to leukemogenesis. The transduction of MLL-GPHN into hematopoietic progenitor cells caused myeloid and lymphoid lineage leukemias in mice, suggesting that MLL-GPHN can target multipotent progenitor cells. Our results, and other recent data, provide a mechanism for oncogenic conversion of MLL by fusion partners encoding cytoplasmic proteins.
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Affiliation(s)
- Mariko Eguchi
- Leukaemia Research Fund Centre, Institute of Cancer Research, Chester Beatty Laboratories, London, United Kingdom
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22
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Gurevich RM, Aplan PD, Humphries RK. NUP98-topoisomerase I acute myeloid leukemia-associated fusion gene has potent leukemogenic activities independent of an engineered catalytic site mutation. Blood 2004; 104:1127-36. [PMID: 15100157 DOI: 10.1182/blood-2003-10-3550] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Chromosomal rearrangements of the 11p15 locus have been identified in hematopoietic malignancies, resulting in translocations involving the N-terminal portion of the nucleoporin gene NUP98. Fifteen different fusion partner genes have been identified for NUP98, and more than one half of these are homeobox transcription factors. By contrast, the NUP98 fusion partner in t(11;20) is Topoisomerase I (TOP1), a catalytic enzyme recognized for its key role in relaxing supercoiled DNA. We now show that retrovirally engineered expression of NUP98-TOP1 in murine bone marrow confers a potent in vitro growth advantage and a block in differentiation in hematopoietic precursors, evidenced by a competitive growth advantage in liquid culture, increased replating efficient of colony-forming cells (CFCs), and a marked increase in spleen colony-forming cell output. Moreover, in a murine bone marrow transplantation model, NUP98-TOP1 expression led to a lethal, transplantable leukemia characterized by extremely high white cell counts, splenomegaly, and mild anemia. Strikingly, a mutation to a TOP1 site to inactivate the isomerase activity essentially left unaltered the growth-promoting and leukemogenic effects of NUP98-TOP1. These findings, together with similar biologic effects reported for NUP98-HOX fusions, suggest unexpected, overlapping functions of NUP98 fusion genes, perhaps related to common DNA binding properties.
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Affiliation(s)
- Rhonna M Gurevich
- Terry Fox Laboratory, 601 W 10th Ave, Vancouver, BC, V5Z 1L3, Canada
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23
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Kobzev YN, Martinez-Climent J, Lee S, Chen J, Rowley JD. Analysis of translocations that involve theNUP98 gene in patients with 11p15 chromosomal rearrangements. Genes Chromosomes Cancer 2004; 41:339-52. [PMID: 15390187 DOI: 10.1002/gcc.20092] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
The NUP98 gene has been reported to be fused with at least 15 partner genes in leukemias with 11p15 translocations. We report the results of screening of cases with cytogenetically documented rearrangements of 11p15 and the subsequent identification of involvement of NUP98 and its partner genes. We identified 49 samples from 46 hematology patients with 11p15 (including a few with 11p14) abnormalities, and using fluorescence in situ hybridization (FISH), we found that NUP98 was disrupted in 7 cases. With the use of gene-specific FISH probes, in 6 cases, we identified the partner genes, which were PRRX1 (PMX1; in 2 cases), HOXD13, RAP1GDS1, HOXC13, and TOP1. In the 3 cases for which RNA was available, RT-PCR was performed, which confirmed the FISH results and identified the location of the breakpoints in patient cDNA. Our data confirm the previous findings that NUP98 is a recurrent target in various types of leukemia.
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Affiliation(s)
- Yuri N Kobzev
- Section of Hematology/Oncology, Department of Medicine, Biological Sciences Division, University of Chicago, 5841 S. Maryland Avenue, Chicago, IL 60637, USA
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