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Tulkens D, Boelens M, Naert T, Carron M, Demuynck S, Dewaele S, Van Isterdael G, Creytens D, Pieters T, Goossens S, Van Vlierberghe P, Vleminckx K. Mutations in the histone methyltransferase Ezh2 drive context-dependent leukemia in Xenopus tropicalis. Leukemia 2023; 37:2404-2413. [PMID: 37794102 DOI: 10.1038/s41375-023-02052-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Revised: 09/19/2023] [Accepted: 09/21/2023] [Indexed: 10/06/2023]
Abstract
CRISPR-mediated simultaneous targeting of candidate tumor suppressor genes in Xenopus tropicalis allows fast functional assessment of co-driver genes for various solid tumors. Genotyping of tumors that emerge in the mosaic mutant animals rapidly exposes the gene mutations under positive selection for tumor establishment. However, applying this simple approach to the blood lineage has not been attempted. Multiple hematologic malignancies have mutations in EZH2, encoding the catalytic subunit of the Polycomb Repressive Complex 2. Interestingly, EZH2 can act as an oncogene or a tumor suppressor, depending on cellular context and disease stage. We show here that mosaic CRISPR/Cas9 mediated ezh2 disruption in the blood lineage resulted in early and penetrant acute myeloid leukemia (AML) induction. While animals were co-targeted with an sgRNA that induces notch1 gain-of-function mutations, sequencing of leukemias revealed positive selection towards biallelic ezh2 mutations regardless of notch1 mutational status. Co-targeting dnm2, recurrently mutated in T/ETP-ALL, induced a switch from myeloid towards acute T-cell leukemia. Both myeloid and T-cell leukemias engrafted in immunocompromised hosts. These data underline the potential of Xenopus tropicalis for modeling human leukemia, where mosaic gene disruption, combined with deep amplicon sequencing of the targeted genomic regions, can rapidly and efficiently expose co-operating driver gene mutations.
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Affiliation(s)
- Dieter Tulkens
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
- Cancer Research Institute Ghent (CRIG), Ghent, Belgium
| | - Marthe Boelens
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
- Cancer Research Institute Ghent (CRIG), Ghent, Belgium
| | - Thomas Naert
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
- Cancer Research Institute Ghent (CRIG), Ghent, Belgium
| | - Marjolein Carron
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
- Center for Medical Genetics, Ghent University, Ghent, Belgium
- Department of Biomolecular Medicine, Ghent University, Ghent, Belgium
| | - Suzan Demuynck
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
- Cancer Research Institute Ghent (CRIG), Ghent, Belgium
| | - Sylviane Dewaele
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
- VIB Center for Inflammation Research, Ghent, Belgium
| | - Gert Van Isterdael
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
- VIB Flow Core, VIB Center for Inflammation Research, Ghent, Belgium
| | - David Creytens
- Cancer Research Institute Ghent (CRIG), Ghent, Belgium
- Department of Pathology, Ghent University and Ghent University Hospital, Ghent, Belgium
- Department of Diagnostic Sciences, Ghent University, Ghent, Belgium
| | - Tim Pieters
- Cancer Research Institute Ghent (CRIG), Ghent, Belgium
- Center for Medical Genetics, Ghent University, Ghent, Belgium
- Department of Biomolecular Medicine, Ghent University, Ghent, Belgium
| | - Steven Goossens
- Cancer Research Institute Ghent (CRIG), Ghent, Belgium
- Department of Diagnostic Sciences, Ghent University, Ghent, Belgium
| | - Pieter Van Vlierberghe
- Cancer Research Institute Ghent (CRIG), Ghent, Belgium
- Center for Medical Genetics, Ghent University, Ghent, Belgium
- Department of Biomolecular Medicine, Ghent University, Ghent, Belgium
| | - Kris Vleminckx
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium.
- Cancer Research Institute Ghent (CRIG), Ghent, Belgium.
- Department of Biomolecular Medicine, Ghent University, Ghent, Belgium.
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2
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Pelayo R. A new hope for early T cell precursor acute lymphoblastic leukemia therapy based on STAT5+ leukemic stem cell targeting. J Leukoc Biol 2023; 114:381-383. [PMID: 37607260 DOI: 10.1093/jleuko/qiad094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Revised: 07/12/2023] [Accepted: 07/13/2023] [Indexed: 08/24/2023] Open
Abstract
Leukemia stem cells are known to drive tumor progression, drug resistance, microenvironmental shift, and relapse, which would make them a perfect therapeutic target. However, their phenotypic and functional similarity to their normal counterparts leaves limited road maps for their selective elimination. Tremblay et al. recently unraveled the fundamental role of overactivated pSTAT5 as a functional marker of early T cell precursor acute lymphoblastic leukemia stem cells driving leukemic progression and highlighted its potential use as a therapeutic target to prevent fatal outcomes.
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Affiliation(s)
- Rosana Pelayo
- Unidad de Educación e Investigación, Instituto Mexicano del Seguro Social, Centro de Investigación Biomédica de Oriente, Km 4.5 Carretera Atlixco-Metepec, 74360 Puebla, Mexico
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3
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Abdulla HD, Alserihi R, Flensburg C, Abeysekera W, Luo MX, Gray DH, Liu X, Smyth GK, Alexander WS, Majewski IJ, McCormack MP. Overexpression of Lmo2 initiates T-lymphoblastic leukemia via impaired thymocyte competition. J Exp Med 2023; 220:e20212383. [PMID: 36920307 PMCID: PMC10037042 DOI: 10.1084/jem.20212383] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2021] [Revised: 12/19/2022] [Accepted: 02/22/2023] [Indexed: 03/16/2023] Open
Abstract
Cell competition has recently emerged as an important tumor suppressor mechanism in the thymus that inhibits autonomous thymic maintenance. Here, we show that the oncogenic transcription factor Lmo2 causes autonomous thymic maintenance in transgenic mice by inhibiting early T cell differentiation. This autonomous thymic maintenance results in the development of self-renewing preleukemic stem cells (pre-LSCs) and subsequent leukemogenesis, both of which are profoundly inhibited by restoration of thymic competition or expression of the antiapoptotic factor BCL2. Genomic analyses revealed the presence of Notch1 mutations in pre-LSCs before subsequent loss of tumor suppressors promotes the transition to overt leukemogenesis. These studies demonstrate a critical role for impaired cell competition in the development of pre-LSCs in a transgenic mouse model of T cell acute lymphoblastic leukemia (T-ALL), implying that this process plays a role in the ontogeny of human T-ALL.
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Affiliation(s)
- Hesham D. Abdulla
- Walter and Eliza Hall Institute of Medical Research, Parkville, Australia
- Department of Medical Biology, University of Melbourne, Parkville, Australia
| | - Raed Alserihi
- Walter and Eliza Hall Institute of Medical Research, Parkville, Australia
- Department of Medical Biology, University of Melbourne, Parkville, Australia
- College of Applied Medical Sciences, King Abdul-Aziz University, Jeddah, Saudi Arabia
| | - Christoffer Flensburg
- Walter and Eliza Hall Institute of Medical Research, Parkville, Australia
- Department of Medical Biology, University of Melbourne, Parkville, Australia
| | - Waruni Abeysekera
- Walter and Eliza Hall Institute of Medical Research, Parkville, Australia
- Department of Medical Biology, University of Melbourne, Parkville, Australia
| | - Meng-Xiao Luo
- Walter and Eliza Hall Institute of Medical Research, Parkville, Australia
- Department of Medical Biology, University of Melbourne, Parkville, Australia
| | - Daniel H.D. Gray
- Walter and Eliza Hall Institute of Medical Research, Parkville, Australia
- Department of Medical Biology, University of Melbourne, Parkville, Australia
| | - Xiaodong Liu
- Westlake Laboratory of Life Sciences and Biomedicine, Hangzhou, China
- School of Life Sciences, Westlake University, Hangzhou, China
- Westlake Institute for Advanced Study, Hangzhou, China
| | - Gordon K. Smyth
- Walter and Eliza Hall Institute of Medical Research, Parkville, Australia
- School of Mathematics and Statistics, University of Melbourne, Parkville, Australia
| | - Warren S. Alexander
- Walter and Eliza Hall Institute of Medical Research, Parkville, Australia
- Department of Medical Biology, University of Melbourne, Parkville, Australia
| | - Ian J. Majewski
- Walter and Eliza Hall Institute of Medical Research, Parkville, Australia
- Department of Medical Biology, University of Melbourne, Parkville, Australia
| | - Matthew P. McCormack
- Walter and Eliza Hall Institute of Medical Research, Parkville, Australia
- Department of Medical Biology, University of Melbourne, Parkville, Australia
- Australian Centre for Blood Diseases, Monash University, Melbourne, Australia
- iCamuno Biotherapeutics, Melbourne, Australia
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4
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Zhang Z, Yang K, Zhang H. Targeting Leukemia-Initiating Cells and Leukemic Niches: The Next Therapy Station for T-Cell Acute Lymphoblastic Leukemia? Cancers (Basel) 2022; 14:cancers14225655. [PMID: 36428753 PMCID: PMC9688677 DOI: 10.3390/cancers14225655] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Revised: 11/09/2022] [Accepted: 11/15/2022] [Indexed: 11/19/2022] Open
Abstract
T-cell acute lymphoblastic leukemia (T-ALL) is an aggressive subtype of hematological malignancy characterized by its high heterogeneity and potentially life-threatening clinical features. Despite the advances in risk stratification and therapeutic management of T-ALL, patients often suffer from treatment failure and chemotherapy-induced toxicity, calling for greater efforts to improve therapeutic efficacy and safety in the treatment of T-ALL. During the past decades, increasing evidence has shown the indispensable effects of leukemia-initiating cells (LICs) and leukemic niches on T-ALL initiation and progression. These milestones greatly facilitate precision medicine by interfering with the pathways that are associated with LICs and leukemic niches or by targeting themselves directly. Most of these novel agents, either alone or in combination with conventional chemotherapy, have shown promising preclinical results, facilitating them to be further evaluated under clinical trials. In this review, we summarize the latest discoveries in LICs and leukemic niches in terms of T-ALL, with a particular highlight on the current precision medicine. The challenges and future prospects are also discussed.
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Affiliation(s)
- Ziting Zhang
- Institute of Medical Biology, Chinese Academy of Medical Sciences and Peking Union Medical College, Kunming 650118, China
| | - Kun Yang
- Institute of Medical Biology, Chinese Academy of Medical Sciences and Peking Union Medical College, Kunming 650118, China
- School of Life Sciences, Yunnan University, Kunming 650500, China
| | - Han Zhang
- Institute of Medical Biology, Chinese Academy of Medical Sciences and Peking Union Medical College, Kunming 650118, China
- Correspondence: ; Tel.: +86-158-7796-3252
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5
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Salmerón-Villalobos J, Ramis-Zaldivar JE, Balagué O, Verdú-Amorós J, Celis V, Sábado C, Garrido M, Mato S, Uriz J, Ortega MJ, Gutierrez-Camino A, Sinnett D, Illarregi U, Carron M, Regueiro A, Galera A, Gonzalez-Farré B, Campo E, Garcia N, Colomer D, Astigarraga I, Andrés M, Llavador M, Martin-Guerrero I, Salaverria I. Diverse mutations and structural variations contribute to Notch signaling deregulation in paediatric T-cell lymphoblastic lymphoma. Pediatr Blood Cancer 2022; 69:e29926. [PMID: 36000950 DOI: 10.1002/pbc.29926] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/03/2022] [Revised: 07/24/2022] [Accepted: 07/25/2022] [Indexed: 11/12/2022]
Abstract
BACKGROUND T-cell lymphoblastic lymphoma (T-LBL) is an aggressive neoplasm closely related to T-cell acute lymphoblastic leukaemia (T-ALL). Despite their similarities, and contrary to T-ALL, studies on paediatric T-LBL are scarce and, therefore, its molecular landscape has not yet been fully elucidated. Thus, the aims of this study were to characterize the genetic and molecular heterogeneity of paediatric T-LBL and to evaluate novel molecular markers differentiating this entity from T-ALL. PROCEDURE Thirty-three paediatric T-LBL patients were analyzed using an integrated approach, including targeted next-generation sequencing, RNA-sequencing transcriptome analysis and copy-number arrays. RESULTS Copy number and mutational analyses allowed the detection of recurrent homozygous deletions of 9p/CDKN2A (78%), trisomy 20 (19%) and gains of 17q24-q25 (16%), as well as frequent mutations of NOTCH1 (62%), followed by the BCL11B (23%), WT1 (19%) and FBXW7, PHF6 and RPL10 genes (15%, respectively). This genetic profile did not differ from that described in T-ALL in terms of mutation incidence and global genomic complexity level, but unveiled virtually exclusive 17q25 gains and trisomy 20 in T-LBL. Additionally, we identified novel gene fusions in paediatric T-LBL, including NOTCH1-IKZF2, RNGTT-SNAP91 and DDX3X-MLLT10, the last being the only one previously described in T-ALL. Moreover, clinical correlations highlighted the presence of Notch pathway alterations as a factor related to favourable outcome. CONCLUSIONS In summary, the genomic landscape of paediatric T-LBL is similar to that observed in T-ALL, and Notch signaling pathway deregulation remains the cornerstone in its pathogenesis, including not only mutations but fusion genes targeting NOTCH1.
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Affiliation(s)
- Julia Salmerón-Villalobos
- Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain.,Centro de Investigación Biomédica en Red-Oncología (CIBERONC), Madrid, Spain
| | - Joan Enric Ramis-Zaldivar
- Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain.,Centro de Investigación Biomédica en Red-Oncología (CIBERONC), Madrid, Spain
| | - Olga Balagué
- Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain.,Centro de Investigación Biomédica en Red-Oncología (CIBERONC), Madrid, Spain.,Haematopathology Unit, Hospital Clínic, Barcelona, Spain
| | | | - Verónica Celis
- Paediatric Oncology Department, Hospital Sant Joan de Déu, Esplugues de Llobregat, Spain
| | - Constantino Sábado
- Paediatric Oncology Department, Hospital Vall d'Hebron, Barcelona, Spain
| | - Marta Garrido
- Anatomic Pathology Department, Hospital Vall d'Hebron, Barcelona, Spain
| | - Sara Mato
- Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain.,Centro de Investigación Biomédica en Red-Oncología (CIBERONC), Madrid, Spain
| | - Javier Uriz
- Paediatric Oncohaematology Department, Donostia University Hospital, Biodonostia Health Research Institute, San Sebastian, Spain
| | - M José Ortega
- Paediatric Oncology Department, Hospital Universitario Virgen de la Nieves, Granada, Spain
| | | | - Daniel Sinnett
- Division of Haematology-Oncology, CHU Sainte-Justine Research Center, Montreal, Canada.,Department of Paediatrics, Faculty of Medicine, University of Montreal, Montreal, Canada
| | - Unai Illarregi
- Genetics, Physics Anthropology and Animal Physiology, Faculty of Science and Technology, UPV/EHU, Leioa, Spain
| | - Máxime Carron
- Division of Haematology-Oncology, CHU Sainte-Justine Research Center, Montreal, Canada
| | - Alexandra Regueiro
- Paediatric Haematology and Oncology Department, Hospital Clínico Universitario de Santiago de Compostela, Santiago de Compostela, Spain
| | - Ana Galera
- Paediatric Oncohaematology Department, Hospital Clínico Universitario Virgen de la Arrixaca, Murcia, Spain
| | - Blanca Gonzalez-Farré
- Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain.,Centro de Investigación Biomédica en Red-Oncología (CIBERONC), Madrid, Spain.,Haematopathology Unit, Hospital Clínic, Barcelona, Spain
| | - Elias Campo
- Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain.,Centro de Investigación Biomédica en Red-Oncología (CIBERONC), Madrid, Spain.,Haematopathology Unit, Hospital Clínic, Barcelona, Spain
| | - Noelia Garcia
- Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain
| | - Dolors Colomer
- Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain.,Centro de Investigación Biomédica en Red-Oncología (CIBERONC), Madrid, Spain.,Haematopathology Unit, Hospital Clínic, Barcelona, Spain
| | - Itziar Astigarraga
- Paediatric Department, Osakidetza, Biocruces Bizkaia Health Research Institute, Hospital Universitario Cruces, Barakaldo, Spain.,Paediatric Department, Universidad del Pais Vasco UPV/EHU, Leioa, Spain
| | - Mara Andrés
- Paediatric Oncology Department, Hospital La Fe, Valencia, Spain
| | | | - Idoia Martin-Guerrero
- Biocruces Bizkaia Health Research Institute, Department of Genetics, Physical Anthropology & Animal Physiology, Science and Technology Faculty, University of the Basque Country, UPV/EHU, Leioa, Spain
| | - Itziar Salaverria
- Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain.,Centro de Investigación Biomédica en Red-Oncología (CIBERONC), Madrid, Spain
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6
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Fregona V, Bayet M, Gerby B. Oncogene-Induced Reprogramming in Acute Lymphoblastic Leukemia: Towards Targeted Therapy of Leukemia-Initiating Cells. Cancers (Basel) 2021; 13:cancers13215511. [PMID: 34771671 PMCID: PMC8582707 DOI: 10.3390/cancers13215511] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Accepted: 10/28/2021] [Indexed: 12/16/2022] Open
Abstract
Simple Summary Acute lymphoblastic leukemia is a heterogeneous disease characterized by a diversity of genetic alterations, following a sophisticated and controversial organization. In this review, we present and discuss the concepts exploring the cellular, molecular and functional heterogeneity of leukemic cells. We also review the emerging evidence indicating that cell plasticity and oncogene-induced reprogramming should be considered at the biological and clinical levels as critical mechanisms for identifying and targeting leukemia-initiating cells. Abstract Our understanding of the hierarchical structure of acute leukemia has yet to be fully translated into therapeutic approaches. Indeed, chemotherapy still has to take into account the possibility that leukemia-initiating cells may have a distinct chemosensitivity profile compared to the bulk of the tumor, and therefore are spared by the current treatment, causing the relapse of the disease. Therefore, the identification of the cell-of-origin of leukemia remains a longstanding question and an exciting challenge in cancer research of the last few decades. With a particular focus on acute lymphoblastic leukemia, we present in this review the previous and current concepts exploring the phenotypic, genetic and functional heterogeneity in patients. We also discuss the benefits of using engineered mouse models to explore the early steps of leukemia development and to identify the biological mechanisms driving the emergence of leukemia-initiating cells. Finally, we describe the major prospects for the discovery of new therapeutic strategies that specifically target their aberrant stem cell-like functions.
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7
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Wang Y, Zhang Z, Xi L, Wang H, Dong F. Early T-cell precursor acute lymphoblastic leukemia with Auer rods in mature granulocytes. Int J Lab Hematol 2021; 44:e52-e54. [PMID: 34559445 DOI: 10.1111/ijlh.13706] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2021] [Revised: 09/07/2021] [Accepted: 09/10/2021] [Indexed: 10/20/2022]
Affiliation(s)
- Yanfang Wang
- Department of Hematology, Lymphoma Research Center, Peking University Third Hospital, Beijing, China
| | - Zhenhao Zhang
- Department of Hematology, Lymphoma Research Center, Peking University Third Hospital, Beijing, China
| | - Lianyong Xi
- Department of Hematology, Lymphoma Research Center, Peking University Third Hospital, Beijing, China
| | - Hua Wang
- Department of Hematology, Lymphoma Research Center, Peking University Third Hospital, Beijing, China
| | - Fei Dong
- Department of Hematology, Lymphoma Research Center, Peking University Third Hospital, Beijing, China
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8
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Silva A, Almeida ARM, Cachucho A, Neto JL, Demeyer S, de Matos M, Hogan T, Li Y, Meijerink J, Cools J, Grosso AR, Seddon B, Barata JT. Overexpression of wild-type IL-7Rα promotes T-cell acute lymphoblastic leukemia/lymphoma. Blood 2021; 138:1040-1052. [PMID: 33970999 PMCID: PMC8462360 DOI: 10.1182/blood.2019000553] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2019] [Accepted: 04/15/2021] [Indexed: 12/02/2022] Open
Abstract
Tight regulation of IL-7Rα expression is essential for normal T-cell development. IL-7Rα gain-of-function mutations are known drivers of T-cell acute lymphoblastic leukemia (T-ALL). Although a subset of patients with T-ALL display high IL7R messenger RNA levels and cases with IL7R gains have been reported, the impact of IL-7Rα overexpression, rather than mutational activation, during leukemogenesis remains unclear. In this study, overexpressed IL-7Rα in tetracycline-inducible Il7r transgenic and Rosa26 IL7R knockin mice drove potential thymocyte self-renewal, and thymus hyperplasia related to increased proliferation of T-cell precursors, which subsequently infiltrated lymph nodes, spleen, and bone marrow, ultimately leading to fatal leukemia. The tumors mimicked key features of human T-ALL, including heterogeneity in immunophenotype and genetic subtype between cases, frequent hyperactivation of the PI3K/Akt pathway paralleled by downregulation of p27Kip1 and upregulation of Bcl-2, and gene expression signatures evidencing activation of JAK/STAT, PI3K/Akt/mTOR and Notch signaling. Notably, we also found that established tumors may no longer require high levels of IL-7R expression upon secondary transplantation and progressed in the absence of IL-7, but remain sensitive to inhibitors of IL-7R-mediated signaling ruxolitinib (Jak1), AZD1208 (Pim), dactolisib (PI3K/mTOR), palbociclib (Cdk4/6), and venetoclax (Bcl-2). The relevance of these findings for human disease are highlighted by the fact that samples from patients with T-ALL with high wild-type IL7R expression display a transcriptional signature resembling that of IL-7-stimulated pro-T cells and, critically, of IL7R-mutant cases of T-ALL. Overall, our study demonstrates that high expression of IL-7Rα can promote T-cell tumorigenesis, even in the absence of IL-7Rα mutational activation.
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Affiliation(s)
- Ana Silva
- Institute of Immunity and Transplantation, Division of Infection and Immunity, University College London, London, United Kingdom
- Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, Lisbon, Portugal
| | - Afonso R M Almeida
- Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, Lisbon, Portugal
| | - Ana Cachucho
- Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, Lisbon, Portugal
| | - João L Neto
- Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, Lisbon, Portugal
| | - Sofie Demeyer
- Vlaams Instituut voor Biotechnologie (VIB) Center for Cancer Biology
- Katholieke Universiteit (KU) Leuven Center for Human Genetics, Katholieke Universiteit (VIB-KU) Leuven, Leuven, Belgium
| | - Mafalda de Matos
- Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, Lisbon, Portugal
| | - Thea Hogan
- Institute of Immunity and Transplantation, Division of Infection and Immunity, University College London, London, United Kingdom
| | - Yunlei Li
- Department of Pathology Erasmus Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Jules Meijerink
- Princess Máxima Center for Pediatric Oncology, Utrecht, The Netherlands.; and
| | - Jan Cools
- Vlaams Instituut voor Biotechnologie (VIB) Center for Cancer Biology
| | - Ana Rita Grosso
- Departamento de Ciências da Vida, Faculdade de Ciências e Tecnologia, Unidade de Ciências Biomoleculares Aplicadas (UCIBIO), Universidade NOVA de Lisboa, Caparica, Portugal
| | - Benedict Seddon
- Institute of Immunity and Transplantation, Division of Infection and Immunity, University College London, London, United Kingdom
| | - João T Barata
- Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, Lisbon, Portugal
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9
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Tremblay CS, Ting SB, McCluskey A, Robinson PJ, Curtis DJ. Shutting the gate: targeting endocytosis in acute leukemia. Exp Hematol 2021; 104:17-31. [PMID: 34563604 DOI: 10.1016/j.exphem.2021.09.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Revised: 09/02/2021] [Accepted: 09/15/2021] [Indexed: 10/20/2022]
Abstract
Endocytosis entails selective packaging of cell surface cargos in cytoplasmic vesicles, thereby controlling key intrinsic cellular processes as well as the response of normal and malignant cells to their microenvironment. The purpose of this review is to outline the latest advances in the development of endocytosis-targeting therapeutic strategies in hematological malignancies.
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Affiliation(s)
- Cedric S Tremblay
- Australian Centre for Blood Diseases, Central Clinical School, Monash University, Melbourne, Victoria, Australia.
| | - Stephen B Ting
- Australian Centre for Blood Diseases, Central Clinical School, Monash University, Melbourne, Victoria, Australia; Department of Clinical Haematology, Eastern Health, Box Hill, Victoria, Australia; Department of Clinical Haematology, Alfred Hospital, Melbourne, Victoria, Australia
| | - Adam McCluskey
- Chemistry, Centre for Chemical Biology, School of Environmental and Life Sciences, University of Newcastle, Callaghan, New South Wales, Australia
| | - Phillip J Robinson
- Children's Cancer Institute, Lowy Cancer Research Centre, University of New South Wales, Sydney, New South Wales, Australia; Cell Signalling Unit, Children's Medical Research Institute, Sydney, New South Wales, Australia
| | - David J Curtis
- Australian Centre for Blood Diseases, Central Clinical School, Monash University, Melbourne, Victoria, Australia; Department of Clinical Haematology, Alfred Hospital, Melbourne, Victoria, Australia
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10
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Dynamin inhibition causes context-dependent cell death of leukemia and lymphoma cells. PLoS One 2021; 16:e0256708. [PMID: 34492077 PMCID: PMC8423305 DOI: 10.1371/journal.pone.0256708] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Accepted: 06/28/2021] [Indexed: 11/29/2022] Open
Abstract
Current chemotherapy for treatment of pediatric acute leukemia, although generally successful, is still a matter of concern due to treatment resistance, relapses and life-long side effects for a subset of patients. Inhibition of dynamin, a GTPase involved in clathrin-mediated endocytosis and regulation of the cell cycle, has been proposed as a potential anti-cancer regimen, but the effects of dynamin inhibition on leukemia cells has not been extensively addressed. Here we adopted single cell and whole-population analysis by flow cytometry and live imaging, to assess the effect of dynamin inhibition (Dynasore, Dyngo-4a, MitMAB) on pediatric acute leukemia cell lines (CCRF-CEM and THP-1), human bone marrow biopsies from patients diagnosed with acute lymphoblastic leukemia (ALL), as well as in a model of lymphoma (EL4)-induced tumor growth in mice. All inhibitors suppressed proliferation and induced pronounced caspase-dependent apoptotic cell death in CCRF-CEM and THP-1 cell lines. However, the inhibitors showed no effect on bone marrow biopsies, and did not prevent EL4-induced tumor formation in mice. We conclude that dynamin inhibition affects highly proliferating human leukemia cells. These findings form a basis for evaluation of the potential, and constraints, of employing dynamin inhibition in treatment strategies against leukemia and other malignancies.
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11
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Oncogenic Cooperation Between IL7R-JAK-STAT Pathway Mutations. Hemasphere 2021; 5:e637. [PMID: 34476346 PMCID: PMC8389874 DOI: 10.1097/hs9.0000000000000637] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Accepted: 08/04/2021] [Indexed: 11/25/2022] Open
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12
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T-Cell Acute Lymphoblastic Leukemia: Biomarkers and Their Clinical Usefulness. Genes (Basel) 2021; 12:genes12081118. [PMID: 34440292 PMCID: PMC8394887 DOI: 10.3390/genes12081118] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2021] [Revised: 07/17/2021] [Accepted: 07/20/2021] [Indexed: 12/11/2022] Open
Abstract
T-cell acute lymphoblastic leukemias (T-ALL) are immature lymphoid tumors localizing in the bone marrow, mediastinum, central nervous system, and lymphoid organs. They account for 10-15% of pediatric and about 25% of adult acute lymphoblastic leukemia (ALL) cases. It is a widely heterogeneous disease that is caused by the co-occurrence of multiple genetic abnormalities, which are acquired over time, and once accumulated, lead to full-blown leukemia. Recurrently affected genes deregulate pivotal cell processes, such as cycling (CDKN1B, RB1, TP53), signaling transduction (RAS pathway, IL7R/JAK/STAT, PI3K/AKT), epigenetics (PRC2 members, PHF6), and protein translation (RPL10, CNOT3). A remarkable role is played by NOTCH1 and CDKN2A, as they are altered in more than half of the cases. The activation of the NOTCH1 signaling affects thymocyte specification and development, while CDKN2A haploinsufficiency/inactivation, promotes cell cycle progression. Among recurrently involved oncogenes, a major role is exerted by T-cell-specific transcription factors, whose deregulated expression interferes with normal thymocyte development and causes a stage-specific differentiation arrest. Hence, TAL and/or LMO deregulation is typical of T-ALL with a mature phenotype (sCD3 positive) that of TLX1, NKX2-1, or TLX3, of cortical T-ALL (CD1a positive); HOXA and MEF2C are instead over-expressed in subsets of Early T-cell Precursor (ETP; immature phenotype) and early T-ALL. Among immature T-ALL, genomic alterations, that cause BCL11B transcriptional deregulation, identify a specific genetic subgroup. Although comprehensive cytogenetic and molecular studies have shed light on the genetic background of T-ALL, biomarkers are not currently adopted in the diagnostic workup of T-ALL, and only a limited number of studies have assessed their clinical implications. In this review, we will focus on recurrent T-ALL abnormalities that define specific leukemogenic pathways and on oncogenes/oncosuppressors that can serve as diagnostic biomarkers. Moreover, we will discuss how the complex genomic profile of T-ALL can be used to address and test innovative/targeted therapeutic options.
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13
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Trochet D, Bitoun M. A review of Dynamin 2 involvement in cancers highlights a promising therapeutic target. JOURNAL OF EXPERIMENTAL & CLINICAL CANCER RESEARCH : CR 2021; 40:238. [PMID: 34294140 PMCID: PMC8296698 DOI: 10.1186/s13046-021-02045-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/26/2021] [Accepted: 07/15/2021] [Indexed: 12/23/2022]
Abstract
Dynamin 2 (DNM2) is an ubiquitously expressed large GTPase well known for its role in vesicle formation in endocytosis and intracellular membrane trafficking also acting as a regulator of cytoskeletons. During the last two decades, DNM2 involvement, through mutations or overexpression, emerged in an increasing number of cancers and often associated with poor prognosis. A wide panel of DNM2-dependent processes was described in cancer cells which explains DNM2 contribution to cancer pathomechanisms. First, DNM2 dysfunction may promote cell migration, invasion and metastasis. Second, DNM2 acts on intracellular signaling pathways fostering tumor cell proliferation and survival. Relative to these roles, DNM2 was demonstrated as a therapeutic target able to reduce cell proliferation, induce apoptosis, and reduce the invasive phenotype in a wide range of cancer cells in vitro. Moreover, proofs of concept of therapy by modulation of DNM2 expression was also achieved in vivo in several animal models. Consequently, DNM2 appears as a promising molecular target for the development of anti-invasive agents and the already provided proofs of concept in animal models represent an important step of preclinical development.
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Affiliation(s)
- Delphine Trochet
- Centre de Recherche en Myologie, Sorbonne Université, Inserm, UMRS 974, Institut de Myologie, F-75013, Paris, France
| | - Marc Bitoun
- Centre de Recherche en Myologie, Sorbonne Université, Inserm, UMRS 974, Institut de Myologie, F-75013, Paris, France.
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14
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Deregulation of the Interleukin-7 Signaling Pathway in Lymphoid Malignancies. Pharmaceuticals (Basel) 2021; 14:ph14050443. [PMID: 34066732 PMCID: PMC8151260 DOI: 10.3390/ph14050443] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Revised: 05/03/2021] [Accepted: 05/04/2021] [Indexed: 12/21/2022] Open
Abstract
The cytokine interleukin-7 (IL-7) and its receptor are critical for lymphoid cell development. The loss of IL-7 signaling causes severe combined immunodeficiency, whereas gain-of-function alterations in the pathway contribute to malignant transformation of lymphocytes. Binding of IL-7 to the IL-7 receptor results in the activation of the JAK-STAT, PI3K-AKT and Ras-MAPK pathways, each contributing to survival, cell cycle progression, proliferation and differentiation. Here, we discuss the role of deregulated IL-7 signaling in lymphoid malignancies of B- and T-cell origin. Especially in T-cell leukemia, more specifically in T-cell acute lymphoblastic leukemia and T-cell prolymphocytic leukemia, a high frequency of mutations in components of the IL-7 signaling pathway are found, including alterations in IL7R, IL2RG, JAK1, JAK3, STAT5B, PTPN2, PTPRC and DNM2 genes.
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15
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Bednarz-Misa I, Bromke MA, Krzystek-Korpacka M. Interleukin (IL)-7 Signaling in the Tumor Microenvironment. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2021; 1290:9-49. [PMID: 33559853 DOI: 10.1007/978-3-030-55617-4_2] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Interleukin (IL)-7 plays an important immunoregulatory role in different types of cells. Therefore, it attracts researcher's attention, but despite the fact, many aspects of its modulatory action, as well as other functionalities, are still poorly understood. The review summarizes current knowledge on the interleukin-7 and its signaling cascade in context of cancer development. Moreover, it provides a cancer-type focused description of the involvement of IL-7 in solid tumors, as well as hematological malignancies.The interleukin has been discovered as a growth factor crucial for the early lymphocyte development and supporting the growth of malignant cells in certain leukemias and lymphomas. Therefore, its targeting has been explored as a treatment modality in hematological malignancies, while the unique ability to expand lymphocyte populations selectively and without hyperinflammation has been used in experimental immunotherapies in patients with lymphopenia. Ever since the early research demonstrated a reduced growth of solid tumors in the presence of IL-7, the interleukin application in boosting up the anticancer immunity has been investigated. However, a growing body of evidence indicative of IL-7 upregulation in carcinomas, facilitating tumor growth and metastasis and aiding drug-resistance, is accumulating. It therefore becomes increasingly apparent that the response to the IL-7 stimulus strongly depends on cell type, their developmental stage, and microenvironmental context. The interleukin exerts its regulatory action mainly through phosphorylation events in JAK/STAT and PI3K/Akt pathways, while the significance of MAPK pathway seems to be limited to solid tumors. Given the unwavering interest in IL-7 application in immunotherapy, a better understanding of interleukin role, source in tumor microenvironment, and signaling pathways, as well as the identification of cells that are likely to respond should be a research priority.
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Affiliation(s)
- Iwona Bednarz-Misa
- Department of Medical Biochemistry, Wroclaw Medical University, Wroclaw, Poland
| | - Mariusz A Bromke
- Department of Medical Biochemistry, Wroclaw Medical University, Wroclaw, Poland
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16
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Targeting cytokine- and therapy-induced PIM1 activation in preclinical models of T-cell acute lymphoblastic leukemia and lymphoma. Blood 2020; 135:1685-1695. [PMID: 32315407 DOI: 10.1182/blood.2019003880] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2019] [Accepted: 01/24/2020] [Indexed: 12/21/2022] Open
Abstract
T-cell acute lymphoblastic leukemia (T-ALL) and T-cell acute lymphoblastic lymphoma (T-LBL) are aggressive hematological malignancies that are currently treated with high-dose chemotherapy. Over the last several years, the search toward novel and less-toxic therapeutic strategies for T-ALL/T-LBL patients has largely focused on the identification of cell-intrinsic properties of the tumor cell. However, non-cell-autonomous activation of specific oncogenic pathways might also offer opportunities that could be exploited at the therapeutic level. In line with this, we here show that endogenous interleukin 7 (IL7) can increase the expression of the oncogenic kinase proviral integration site for Moloney-murine leukemia 1 (PIM1) in CD127+ T-ALL/T-LBL, thereby rendering these tumor cells sensitive to in vivo PIM inhibition. In addition, using different CD127+ T-ALL/T-LBL xenograft models, we also reveal that residual tumor cells, which remain present after short-term in vivo chemotherapy, display consistent upregulation of PIM1 as compared with bulk nontreated tumor cells. Notably, this effect was transient as increased PIM1 levels were not observed in reestablished disease after abrogation of the initial chemotherapy. Furthermore, we uncover that this phenomenon is, at least in part, mediated by the ability of glucocorticoids to cause transcriptional upregulation of IL7RA in T-ALL/T-LBL patient-derived xenograft (PDX) cells, ultimately resulting in non-cell-autonomous PIM1 upregulation by endogenous IL7. Finally, we confirm in vivo that chemotherapy in combination with a pan-PIM inhibitor can improve leukemia survival in a PDX model of CD127+ T-ALL. Altogether, our work reveals that IL7 and glucocorticoids coordinately drive aberrant activation of PIM1 and suggests that IL7-responsive CD127+ T-ALL and T-LBL patients could benefit from PIM inhibition during induction chemotherapy.
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17
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Tremblay CS, Chiu SK, Saw J, McCalmont H, Litalien V, Boyle J, Sonderegger SE, Chau N, Evans K, Cerruti L, Salmon JM, McCluskey A, Lock RB, Robinson PJ, Jane SM, Curtis DJ. Small molecule inhibition of Dynamin-dependent endocytosis targets multiple niche signals and impairs leukemia stem cells. Nat Commun 2020; 11:6211. [PMID: 33277497 PMCID: PMC7719179 DOI: 10.1038/s41467-020-20091-6] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2019] [Accepted: 11/09/2020] [Indexed: 02/07/2023] Open
Abstract
Intensive chemotherapy for acute leukemia can usually induce complete remission, but fails in many patients to eradicate the leukemia stem cells responsible for relapse. There is accumulating evidence that these relapse-inducing cells are maintained and protected by signals provided by the microenvironment. Thus, inhibition of niche signals is a proposed strategy to target leukemia stem cells but this requires knowledge of the critical signals and may be subject to compensatory mechanisms. Signals from the niche require receptor-mediated endocytosis, a generic process dependent on the Dynamin family of large GTPases. Here, we show that Dynole 34-2, a potent inhibitor of Dynamin GTPase activity, can block transduction of key signalling pathways and overcome chemoresistance of leukemia stem cells. Our results provide a significant conceptual advance in therapeutic strategies for acute leukemia that may be applicable to other malignancies in which signals from the niche are involved in disease progression and chemoresistance. The tumour microenvironment provides signals to support leukaemic stem cells (LSC) maintenance and chemoresistance. Here, the authors show that disrupting niche-associated signalling by inhibiting receptor-mediated endocytosis with a dynamin GTPase inhibitor overcomes chemoresistance of LSC.
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Affiliation(s)
- Cedric S Tremblay
- Australian Centre for Blood Diseases, Central Clinical School, Monash University, Melbourne, VIC, Australia.
| | - Sung Kai Chiu
- Australian Centre for Blood Diseases, Central Clinical School, Monash University, Melbourne, VIC, Australia.,Department of Clinical Haematology, Alfred Health, Melbourne, VIC, Australia
| | - Jesslyn Saw
- Australian Centre for Blood Diseases, Central Clinical School, Monash University, Melbourne, VIC, Australia
| | - Hannah McCalmont
- Lowy Cancer Research Centre, Children's Cancer Institute, University of New South Wales, Sydney, NSW, Australia
| | - Veronique Litalien
- Australian Centre for Blood Diseases, Central Clinical School, Monash University, Melbourne, VIC, Australia
| | - Jacqueline Boyle
- Australian Centre for Blood Diseases, Central Clinical School, Monash University, Melbourne, VIC, Australia
| | - Stefan E Sonderegger
- Australian Centre for Blood Diseases, Central Clinical School, Monash University, Melbourne, VIC, Australia
| | - Ngoc Chau
- Cell Signalling Unit, Children's Medical Research Institute, Sydney, NSW, Australia
| | - Kathryn Evans
- Lowy Cancer Research Centre, Children's Cancer Institute, University of New South Wales, Sydney, NSW, Australia
| | - Loretta Cerruti
- Australian Centre for Blood Diseases, Central Clinical School, Monash University, Melbourne, VIC, Australia
| | - Jessica M Salmon
- Australian Centre for Blood Diseases, Central Clinical School, Monash University, Melbourne, VIC, Australia
| | - Adam McCluskey
- Chemistry, Centre for Chemical Biology, School of Environmental and Life Sciences, University of Newcastle, Callaghan, NSW, Australia
| | - Richard B Lock
- Lowy Cancer Research Centre, Children's Cancer Institute, University of New South Wales, Sydney, NSW, Australia
| | - Phillip J Robinson
- Cell Signalling Unit, Children's Medical Research Institute, Sydney, NSW, Australia
| | - Stephen M Jane
- Australian Centre for Blood Diseases, Central Clinical School, Monash University, Melbourne, VIC, Australia.,Department of Clinical Haematology, Alfred Health, Melbourne, VIC, Australia
| | - David J Curtis
- Australian Centre for Blood Diseases, Central Clinical School, Monash University, Melbourne, VIC, Australia.,Department of Clinical Haematology, Alfred Health, Melbourne, VIC, Australia
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18
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Facts and Challenges in Immunotherapy for T-Cell Acute Lymphoblastic Leukemia. Int J Mol Sci 2020; 21:ijms21207685. [PMID: 33081391 PMCID: PMC7589289 DOI: 10.3390/ijms21207685] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 10/13/2020] [Accepted: 10/14/2020] [Indexed: 12/12/2022] Open
Abstract
T-cell acute lymphoblastic leukemia (T-ALL), a T-cell malignant disease that mainly affects children, is still a medical challenge, especially for refractory patients for whom therapeutic options are scarce. Recent advances in immunotherapy for B-cell malignancies based on increasingly efficacious monoclonal antibodies (mAbs) and chimeric antigen receptors (CARs) have been encouraging for non-responding or relapsing patients suffering from other aggressive cancers like T-ALL. However, secondary life-threatening T-cell immunodeficiency due to shared expression of targeted antigens by healthy and malignant T cells is a main drawback of mAb—or CAR-based immunotherapies for T-ALL and other T-cell malignancies. This review provides a comprehensive update on the different immunotherapeutic strategies that are being currently applied to T-ALL. We highlight recent progress on the identification of new potential targets showing promising preclinical results and discuss current challenges and opportunities for developing novel safe and efficacious immunotherapies for T-ALL.
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19
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Clinical and biological features of PTPN2-deleted adult and pediatric T-cell acute lymphoblastic leukemia. Blood Adv 2020; 3:1981-1988. [PMID: 31270080 DOI: 10.1182/bloodadvances.2018028993] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2018] [Accepted: 05/06/2019] [Indexed: 11/20/2022] Open
Abstract
Protein tyrosine phosphatase nonreceptor type 2 (PTPN2) is a phosphatase known to be a tumor suppressor gene in T-cell acute lymphoblastic leukemia (T-ALL). Because the full clinicobiologic characteristics of PTPN2 loss remain poorly reported, we aimed to provide a comprehensive analysis of PTPN2 deletions within a cohort of 430 patients, including 216 adults and 214 children treated according to the GRAALL03/05 (#NCT00222027 and #NCT00327678) and the FRALLE2000 protocols, respectively. We used multiplex ligation-dependent probe amplification to identify an 8% incidence of PTPN2 deletion, which was comparable in adult (9%) and pediatric (6%) populations. PTPN2 deletions were significantly associated with an αβ lineage and TLX1 deregulation. Analysis of the mutational genotype of adult T-ALL revealed a positive correlation between PTPN2 deletions and gain-of-function alterations in the IL7R/JAK-STAT signaling pathway as well as PHF6 and WT1 mutations. Of note, PTPN2 and PTEN (phosphatase and tensin homolog) deletions were mutually exclusive. Regarding treatment response, PTPN2-deleted T-ALLs were associated with a higher glucocorticoid response and a trend for improved survival in children, but not in adults, with a 5-year cumulative incidence of relapse of 8% for PTPN2-deleted pediatric cases vs 26% (P = .177).
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20
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IL-7R is essential for leukemia-initiating cell activity of T-cell acute lymphoblastic leukemia. Blood 2020; 134:2171-2182. [PMID: 31530562 DOI: 10.1182/blood.2019000982] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2019] [Accepted: 09/05/2019] [Indexed: 12/13/2022] Open
Abstract
T-cell acute lymphoblastic leukemia (T-ALL) is an aggressive hematological malignancy resulting from the dysregulation of signaling pathways that control intrathymic T-cell development. Relapse rates are still significant, and prognosis is particularly bleak for relapsed patients. Therefore, development of novel therapies specifically targeting pathways controlling leukemia-initiating cell (LIC) activity is mandatory for fighting refractory T-ALL. The interleukin-7 receptor (IL-7R) is a crucial T-cell developmental pathway that is commonly expressed in T-ALL and has been implicated in leukemia progression; however, the significance of IL-7R/IL-7 signaling in T-ALL pathogenesis and its contribution to disease relapse remain unknown. To directly explore whether IL-7R targeting may be therapeutically efficient against T-ALL relapse, we focused on a known Notch1-induced T-ALL model, because a majority of T-ALL patients harbor activating mutations in NOTCH1, which is a transcriptional regulator of IL-7R expression. Using loss-of-function approaches, we show that Il7r-deficient, but not wild-type, mouse hematopoietic progenitors transduced with constitutively active Notch1 failed to generate leukemia upon transplantation into immunodeficient mice, thus providing formal evidence that IL-7R function is essential for Notch1-induced T-cell leukemogenesis. Moreover, we demonstrate that IL-7R expression is an early functional biomarker of T-ALL cells with LIC potential and report that impaired IL-7R signaling hampers engraftment and progression of patient-derived T-ALL xenografts. Notably, we show that IL-7R-dependent LIC activity and leukemia progression can be extended to human B-cell acute lymphoblastic leukemia (B-ALL). These results have important therapeutic implications, highlighting the relevance that targeting normal IL-7R signaling may have in future therapeutic interventions, particularly for preventing T-ALL (and B-ALL) relapse.
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21
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Gianni F, Belver L, Ferrando A. The Genetics and Mechanisms of T-Cell Acute Lymphoblastic Leukemia. Cold Spring Harb Perspect Med 2020; 10:a035246. [PMID: 31570389 PMCID: PMC7050584 DOI: 10.1101/cshperspect.a035246] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
T-cell acute lymphoblastic leukemia (T-ALL) is an aggressive hematologic malignancy derived from early T-cell progenitors. The recognition of clinical, genetic, transcriptional, and biological heterogeneity in this disease has already translated into new prognostic biomarkers, improved leukemia animal models, and emerging targeted therapies. This work reviews our current understanding of the molecular mechanisms of T-ALL.
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Affiliation(s)
- Francesca Gianni
- Institute for Cancer Genetics, Columbia University Medical Center, New York, New York 10032, USA
| | - Laura Belver
- Institute for Cancer Genetics, Columbia University Medical Center, New York, New York 10032, USA
| | - Adolfo Ferrando
- Institute for Cancer Genetics, Columbia University Medical Center, New York, New York 10032, USA
- Department of Pathology, Columbia University Medical Center, New York, New York 10032, USA
- Department of Pediatrics, Columbia University Medical Center, New York, New York 10032, USA
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22
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Autry RJ, Paugh SW, Carter R, Shi L, Liu J, Ferguson DC, Lau CE, Bonten EJ, Yang W, McCorkle JR, Beard JA, Panetta JC, Diedrich JD, Crews KR, Pei D, Coke CJ, Natarajan S, Khatamian A, Karol SE, Lopez-Lopez E, Diouf B, Smith C, Gocho Y, Hagiwara K, Roberts KG, Pounds S, Kornblau SM, Stock W, Paietta EM, Litzow MR, Inaba H, Mullighan CG, Jeha S, Pui CH, Cheng C, Savic D, Yu J, Gawad C, Relling MV, Yang JJ, Evans WE. Integrative genomic analyses reveal mechanisms of glucocorticoid resistance in acute lymphoblastic leukemia. NATURE CANCER 2020; 1:329-344. [PMID: 32885175 PMCID: PMC7467080 DOI: 10.1038/s43018-020-0037-3] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2019] [Accepted: 01/29/2020] [Indexed: 12/31/2022]
Abstract
Identification of genomic and epigenomic determinants of drug resistance provides important insights for improving cancer treatment. Using agnostic genome-wide interrogation of mRNA and miRNA expression, DNA methylation, SNPs, CNAs and SNVs/Indels in primary human acute lymphoblastic leukemia cells, we identified 463 genomic features associated with glucocorticoid resistance. Gene-level aggregation identified 118 overlapping genes, 15 of which were confirmed by genome-wide CRISPR screen. Collectively, this identified 30 of 38 (79%) known glucocorticoid-resistance genes/miRNAs and all 38 known resistance pathways, while revealing 14 genes not previously associated with glucocorticoid-resistance. Single cell RNAseq and network-based transcriptomic modelling corroborated the top previously undiscovered gene, CELSR2. Manipulation of CELSR2 recapitulated glucocorticoid resistance in human leukemia cell lines and revealed a synergistic drug combination (prednisolone and venetoclax) that mitigated resistance in mouse xenograft models. These findings illustrate the power of an integrative genomic strategy for elucidating genes and pathways conferring drug resistance in cancer cells.
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Affiliation(s)
- Robert J Autry
- Hematological Malignancies Program and Center for Precision Medicine in Leukemia, St. Jude Children's Research Hospital, Memphis, TN, USA
- Department of Pharmaceutical Sciences, St. Jude Children's Research Hospital, Memphis, TN, USA
- Integrated Biomedical Sciences Program, University of Tennessee Health Science Center, Memphis, TN, USA
| | - Steven W Paugh
- Hematological Malignancies Program and Center for Precision Medicine in Leukemia, St. Jude Children's Research Hospital, Memphis, TN, USA
- Department of Pharmaceutical Sciences, St. Jude Children's Research Hospital, Memphis, TN, USA
| | - Robert Carter
- Department of Oncology, St. Jude Children's Research Hospital, Memphis, TN, USA
- Department of Computational Biology, St. Jude Children's Research Hospital, Memphis, TN, USA
| | - Lei Shi
- Department of Biostatistics, St. Jude Children's Research Hospital, Memphis, TN, USA
| | - Jingjing Liu
- Department of Computational Biology, St. Jude Children's Research Hospital, Memphis, TN, USA
| | - Daniel C Ferguson
- Hematological Malignancies Program and Center for Precision Medicine in Leukemia, St. Jude Children's Research Hospital, Memphis, TN, USA
- Department of Pharmaceutical Sciences, St. Jude Children's Research Hospital, Memphis, TN, USA
| | - Calvin E Lau
- Hematological Malignancies Program and Center for Precision Medicine in Leukemia, St. Jude Children's Research Hospital, Memphis, TN, USA
- Department of Pharmaceutical Sciences, St. Jude Children's Research Hospital, Memphis, TN, USA
- Pediatric Oncology Education Program, St. Jude Children's Research Hospital, Memphis, TN, USA
| | - Erik J Bonten
- Hematological Malignancies Program and Center for Precision Medicine in Leukemia, St. Jude Children's Research Hospital, Memphis, TN, USA
- Department of Pharmaceutical Sciences, St. Jude Children's Research Hospital, Memphis, TN, USA
| | - Wenjian Yang
- Hematological Malignancies Program and Center for Precision Medicine in Leukemia, St. Jude Children's Research Hospital, Memphis, TN, USA
- Department of Pharmaceutical Sciences, St. Jude Children's Research Hospital, Memphis, TN, USA
| | - J Robert McCorkle
- Hematological Malignancies Program and Center for Precision Medicine in Leukemia, St. Jude Children's Research Hospital, Memphis, TN, USA
- Department of Pharmaceutical Sciences, St. Jude Children's Research Hospital, Memphis, TN, USA
| | - Jordan A Beard
- Hematological Malignancies Program and Center for Precision Medicine in Leukemia, St. Jude Children's Research Hospital, Memphis, TN, USA
- Department of Pharmaceutical Sciences, St. Jude Children's Research Hospital, Memphis, TN, USA
| | - John C Panetta
- Department of Pharmaceutical Sciences, St. Jude Children's Research Hospital, Memphis, TN, USA
| | - Jonathan D Diedrich
- Hematological Malignancies Program and Center for Precision Medicine in Leukemia, St. Jude Children's Research Hospital, Memphis, TN, USA
- Department of Pharmaceutical Sciences, St. Jude Children's Research Hospital, Memphis, TN, USA
| | - Kristine R Crews
- Hematological Malignancies Program and Center for Precision Medicine in Leukemia, St. Jude Children's Research Hospital, Memphis, TN, USA
- Department of Pharmaceutical Sciences, St. Jude Children's Research Hospital, Memphis, TN, USA
| | - Deqing Pei
- Department of Biostatistics, St. Jude Children's Research Hospital, Memphis, TN, USA
| | - Christopher J Coke
- Hematological Malignancies Program and Center for Precision Medicine in Leukemia, St. Jude Children's Research Hospital, Memphis, TN, USA
- Department of Pharmaceutical Sciences, St. Jude Children's Research Hospital, Memphis, TN, USA
| | - Sivaraman Natarajan
- Department of Oncology, St. Jude Children's Research Hospital, Memphis, TN, USA
- Department of Computational Biology, St. Jude Children's Research Hospital, Memphis, TN, USA
| | - Alireza Khatamian
- Department of Computational Biology, St. Jude Children's Research Hospital, Memphis, TN, USA
| | - Seth E Karol
- Hematological Malignancies Program and Center for Precision Medicine in Leukemia, St. Jude Children's Research Hospital, Memphis, TN, USA
- Department of Oncology, St. Jude Children's Research Hospital, Memphis, TN, USA
- Comprehensive Cancer Center, St. Jude Children's Research Hospital, Memphis, TN, USA
| | - Elixabet Lopez-Lopez
- Hematological Malignancies Program and Center for Precision Medicine in Leukemia, St. Jude Children's Research Hospital, Memphis, TN, USA
- Department of Pharmaceutical Sciences, St. Jude Children's Research Hospital, Memphis, TN, USA
| | - Barthelemy Diouf
- Hematological Malignancies Program and Center for Precision Medicine in Leukemia, St. Jude Children's Research Hospital, Memphis, TN, USA
- Department of Pharmaceutical Sciences, St. Jude Children's Research Hospital, Memphis, TN, USA
| | - Colton Smith
- Hematological Malignancies Program and Center for Precision Medicine in Leukemia, St. Jude Children's Research Hospital, Memphis, TN, USA
- Department of Pharmaceutical Sciences, St. Jude Children's Research Hospital, Memphis, TN, USA
| | - Yoshihiro Gocho
- Hematological Malignancies Program and Center for Precision Medicine in Leukemia, St. Jude Children's Research Hospital, Memphis, TN, USA
- Department of Pharmaceutical Sciences, St. Jude Children's Research Hospital, Memphis, TN, USA
| | - Kohei Hagiwara
- Department of Computational Biology, St. Jude Children's Research Hospital, Memphis, TN, USA
| | - Kathryn G Roberts
- Hematological Malignancies Program and Center for Precision Medicine in Leukemia, St. Jude Children's Research Hospital, Memphis, TN, USA
- Department of Pathology, St. Jude Children's Research Hospital, Memphis, TN, USA
| | - Stanley Pounds
- Department of Biostatistics, St. Jude Children's Research Hospital, Memphis, TN, USA
| | - Steven M Kornblau
- Department of Leukemia, Division of Cancer Medicine, University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Wendy Stock
- Hematopoiesis and Hematological Malignancies Program, University of Chicago, Chicago, IL, USA
| | - Elisabeth M Paietta
- Department of Medicine, Albert Einstein College of Medicine, Montefiore Medical Center, North Division, Bronx, NY, USA
| | - Mark R Litzow
- Division of Hematology and Department of Internal Medicine, Mayo Clinic, Rochester, MN, USA
| | - Hiroto Inaba
- Hematological Malignancies Program and Center for Precision Medicine in Leukemia, St. Jude Children's Research Hospital, Memphis, TN, USA
- Department of Oncology, St. Jude Children's Research Hospital, Memphis, TN, USA
| | - Charles G Mullighan
- Hematological Malignancies Program and Center for Precision Medicine in Leukemia, St. Jude Children's Research Hospital, Memphis, TN, USA
- Department of Oncology, St. Jude Children's Research Hospital, Memphis, TN, USA
- Department of Pathology, St. Jude Children's Research Hospital, Memphis, TN, USA
| | - Sima Jeha
- Hematological Malignancies Program and Center for Precision Medicine in Leukemia, St. Jude Children's Research Hospital, Memphis, TN, USA
- Department of Oncology, St. Jude Children's Research Hospital, Memphis, TN, USA
- Department of Pathology, St. Jude Children's Research Hospital, Memphis, TN, USA
| | - Ching-Hon Pui
- Hematological Malignancies Program and Center for Precision Medicine in Leukemia, St. Jude Children's Research Hospital, Memphis, TN, USA
- Department of Oncology, St. Jude Children's Research Hospital, Memphis, TN, USA
- Department of Pathology, St. Jude Children's Research Hospital, Memphis, TN, USA
| | - Cheng Cheng
- Department of Biostatistics, St. Jude Children's Research Hospital, Memphis, TN, USA
| | - Daniel Savic
- Hematological Malignancies Program and Center for Precision Medicine in Leukemia, St. Jude Children's Research Hospital, Memphis, TN, USA
- Department of Pharmaceutical Sciences, St. Jude Children's Research Hospital, Memphis, TN, USA
| | - Jiyang Yu
- Department of Computational Biology, St. Jude Children's Research Hospital, Memphis, TN, USA
| | - Charles Gawad
- Department of Oncology, St. Jude Children's Research Hospital, Memphis, TN, USA
- Department of Computational Biology, St. Jude Children's Research Hospital, Memphis, TN, USA
| | - Mary V Relling
- Hematological Malignancies Program and Center for Precision Medicine in Leukemia, St. Jude Children's Research Hospital, Memphis, TN, USA
- Department of Pharmaceutical Sciences, St. Jude Children's Research Hospital, Memphis, TN, USA
- Integrated Biomedical Sciences Program, University of Tennessee Health Science Center, Memphis, TN, USA
| | - Jun J Yang
- Hematological Malignancies Program and Center for Precision Medicine in Leukemia, St. Jude Children's Research Hospital, Memphis, TN, USA
- Department of Pharmaceutical Sciences, St. Jude Children's Research Hospital, Memphis, TN, USA
- Department of Oncology, St. Jude Children's Research Hospital, Memphis, TN, USA
| | - William E Evans
- Hematological Malignancies Program and Center for Precision Medicine in Leukemia, St. Jude Children's Research Hospital, Memphis, TN, USA.
- Department of Pharmaceutical Sciences, St. Jude Children's Research Hospital, Memphis, TN, USA.
- Integrated Biomedical Sciences Program, University of Tennessee Health Science Center, Memphis, TN, USA.
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23
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Transcriptional Regulation of Genes by Ikaros Tumor Suppressor in Acute Lymphoblastic Leukemia. Int J Mol Sci 2020; 21:ijms21041377. [PMID: 32085659 PMCID: PMC7073093 DOI: 10.3390/ijms21041377] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2020] [Revised: 02/13/2020] [Accepted: 02/14/2020] [Indexed: 12/27/2022] Open
Abstract
Regulation of oncogenic gene expression by transcription factors that function as tumor suppressors is one of the major mechanisms that regulate leukemogenesis. Understanding this complex process is essential for explaining the pathogenesis of leukemia as well as developing targeted therapies. Here, we provide an overview of the role of Ikaros tumor suppressor and its role in regulation of gene transcription in acute leukemia. Ikaros (IKZF1) is a DNA-binding protein that functions as a master regulator of hematopoiesis and the immune system, as well as a tumor suppressor in acute lymphoblastic leukemia (ALL). Genetic alteration or functional inactivation of Ikaros results in the development of high-risk leukemia. Ikaros binds to the specific consensus binding motif at upstream regulatory elements of its target genes, recruits chromatin-remodeling complexes and activates or represses transcription via chromatin remodeling. Over the last twenty years, a large number of Ikaros target genes have been identified, and the role of Ikaros in the regulation of their expression provided insight into the mechanisms of Ikaros tumor suppressor function in leukemia. Here we summarize the role of Ikaros in the regulation of the expression of the genes whose function is critical for cellular proliferation, development, and progression of acute lymphoblastic leukemia.
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24
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Adult T-cell acute lymphoblastic leukemias with IL7R pathway mutations are slow-responders who do not benefit from allogeneic stem-cell transplantation. Leukemia 2020; 34:1730-1740. [PMID: 31992840 DOI: 10.1038/s41375-019-0685-4] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2019] [Revised: 11/17/2019] [Accepted: 12/05/2019] [Indexed: 12/26/2022]
Abstract
The prognostic value of IL7-receptor pathway (IL7Rp) mutations in T-cell acute lymphoblastic leukemia (T-ALL) remains unclear. We performed a comprehensive study of 200 adult patients with T-ALL included in the GRAALL2003/2005 protocols to address the clinical significance of IL7Rp mutations. Next-generation sequencing of the IL7Rp (IL7R/JAK1/JAK3/STAT5B) revealed that IL7Rp mutations were frequent in adult T-ALL (28%) particularly in immature/early T-cell progenitor (ETP)-ALL. They were associated with mutations of NOTCH-pathway, PHF6, and PRC2 components but not with K/NRAS. IL7Rp mutated (IL7Rpmut) T-ALL were slow-responders, with a high rate of M2/M3 day-8 marrow compared with IL7Rp non-mutated (IL7RpWT) T-ALL (p = 0.002) and minimal residual disease positivity at 6-weeks (MRD1) (p = 0.008) but no difference in MRD2 positivity at 12-weeks. Despite this, no adverse prognosis was evidenced when censored for allogeneic hematopoietic stem cell transplantation (HSCT). In time-dependent analysis, HSCT did not benefit IL7Rpmut patients whereas it was of marked benefit to IL7RpWT cases. IL7Rp-mutations identify a subgroup of slow-responder T-ALLs which benefit from post-induction chemotherapy regimens but not from HSCT. Our data suggest that prior knowledge of the mutation status of IL7Rp may influence HSCT decision and help to guide therapy reduction.
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25
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van der Zwet JCG, Cordo' V, Canté-Barrett K, Meijerink JPP. Multi-omic approaches to improve outcome for T-cell acute lymphoblastic leukemia patients. Adv Biol Regul 2019; 74:100647. [PMID: 31523030 DOI: 10.1016/j.jbior.2019.100647] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2019] [Revised: 08/20/2019] [Accepted: 08/23/2019] [Indexed: 06/10/2023]
Abstract
In the last decade, tremendous progress in curative treatment has been made for T-ALL patients using high-intensive, risk-adapted multi-agent chemotherapy. Further treatment intensification to improve the cure rate is not feasible as it will increase the number of toxic deaths. Hence, about 20% of pediatric patients relapse and often die due to acquired therapy resistance. Personalized medicine is of utmost importance to further increase cure rates and is achieved by targeting specific initiation, maintenance or resistance mechanisms of the disease. Genomic sequencing has revealed mutations that characterize genetic subtypes of many cancers including T-ALL. However, leukemia may have various activated pathways that are not accompanied by the presence of mutations. Therefore, screening for mutations alone is not sufficient to identify all molecular targets and leukemic dependencies for therapeutic inhibition. We review the extent of the driving type A and the secondary type B genomic mutations in pediatric T-ALL that may be targeted by specific inhibitors. Additionally, we review the need for additional screening methods on the transcriptional and protein levels. An integrated 'multi-omic' screening will identify potential targets and biomarkers to establish significant progress in future individualized treatment of T-ALL patients.
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Affiliation(s)
| | - Valentina Cordo'
- Princess Máxima Center for Pediatric Oncology, Utrecht, the Netherlands
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26
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Flip the coin: IL-7 and IL-7R in health and disease. Nat Immunol 2019; 20:1584-1593. [PMID: 31745336 DOI: 10.1038/s41590-019-0479-x] [Citation(s) in RCA: 186] [Impact Index Per Article: 37.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2019] [Accepted: 07/26/2019] [Indexed: 12/14/2022]
Abstract
The cytokine IL-7 and its receptor, IL-7R, are critical for T cell and, in the mouse, B cell development, as well as differentiation and survival of naive T cells, and generation and maintenance of memory T cells. They are also required for innate lymphoid cell (ILC) development and maintenance, and consequently for generation of lymphoid structures and barrier defense. Here we discuss the central role of IL-7 and IL-7R in the lymphoid system and highlight the impact of their deregulation, placing a particular emphasis on their 'dark side' as promoters of cancer development. We also explore therapeutic implications and opportunities associated with either positive or negative modulation of the IL-7-IL-7R signaling axis.
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27
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Kimura S, Seki M, Kawai T, Goto H, Yoshida K, Isobe T, Sekiguchi M, Watanabe K, Kubota Y, Nannya Y, Ueno H, Shiozawa Y, Suzuki H, Shiraishi Y, Ohki K, Kato M, Koh K, Kobayashi R, Deguchi T, Hashii Y, Imamura T, Sato A, Kiyokawa N, Manabe A, Sanada M, Mansour MR, Ohara A, Horibe K, Kobayashi M, Oka A, Hayashi Y, Miyano S, Hata K, Ogawa S, Takita J. DNA methylation-based classification reveals difference between pediatric T-cell acute lymphoblastic leukemia and normal thymocytes. Leukemia 2019; 34:1163-1168. [PMID: 31732719 DOI: 10.1038/s41375-019-0626-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2019] [Revised: 10/17/2019] [Accepted: 11/03/2019] [Indexed: 01/08/2023]
Affiliation(s)
- Shunsuke Kimura
- Department of Pediatrics, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan.,Department of Pediatrics, Hiroshima University Graduate School of Biomedical Sciences, Hiroshima, Japan
| | - Masafumi Seki
- Department of Pediatrics, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Tomoko Kawai
- Department of Maternal-Fetal Biology, National Research Institute for Child Health and Development, Tokyo, Japan
| | - Hiroaki Goto
- Division of Hematology/Oncology and Regenerative Medicine, Kanagawa Children's Medical Center, Yokohama, Japan
| | - Kenichi Yoshida
- Department of Pathology and Tumor Biology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Tomoya Isobe
- Department of Pediatrics, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Masahiro Sekiguchi
- Department of Pediatrics, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Kentaro Watanabe
- Department of Pediatrics, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Yasuo Kubota
- Department of Pediatrics, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Yasuhito Nannya
- Department of Pathology and Tumor Biology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Hiroo Ueno
- Department of Pathology and Tumor Biology, Graduate School of Medicine, Kyoto University, Kyoto, Japan.,Department of Pediatrics, Kyoto University, Kyoto, Japan
| | - Yusuke Shiozawa
- Department of Pathology and Tumor Biology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Hiromichi Suzuki
- Department of Pathology and Tumor Biology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | | | - Kentaro Ohki
- Department of Pediatric Hematology and Oncology Research, National Research Institute for Child Health and Development, Tokyo, Japan
| | - Motohiro Kato
- Department of Pediatric Hematology and Oncology Research, National Research Institute for Child Health and Development, Tokyo, Japan
| | - Katsuyoshi Koh
- Department of Hematology/Oncology, Saitama Children's Medical Center, Saitama, Japan
| | - Ryoji Kobayashi
- Department of Pediatrics, Sapporo Hokuyu Hospital, Sapporo, Japan
| | - Takao Deguchi
- Children's Cancer Center, National Center for Child Health and Development, Tokyo, Japan
| | - Yoshiko Hashii
- Department of Pediatrics, Osaka University Graduate School of Medicine, Suita, Japan
| | - Toshihiko Imamura
- Department of Pediatrics, Kyoto Prefectural University of Medicine, Graduate School of Medical Science, Kyoto, Japan
| | - Atsushi Sato
- Department of Hematology and Oncology, Miyagi Children's Hospital, Sendai, Japan
| | - Nobutaka Kiyokawa
- Department of Pediatric Hematology and Oncology Research, National Research Institute for Child Health and Development, Tokyo, Japan
| | - Atsushi Manabe
- Department of Pediatrics, Hokkaido University Graduate School of Medicine, Sapporo, Japan
| | - Masashi Sanada
- Clinical Research Center, National Hospital Organization Nagoya Medical Center, Nagoya, Japan
| | - Marc R Mansour
- Department of Haematology, University College London Cancer Institute, London, UK
| | - Akira Ohara
- Department of Pediatrics, Toho University, Tokyo, Japan
| | - Keizo Horibe
- Clinical Research Center, National Hospital Organization Nagoya Medical Center, Nagoya, Japan
| | - Masao Kobayashi
- Department of Pediatrics, Hiroshima University Graduate School of Biomedical Sciences, Hiroshima, Japan
| | - Akira Oka
- Department of Pediatrics, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Yasuhide Hayashi
- Institute of Physiology and Medicine, Jobu University, Takasaki, Japan
| | - Satoru Miyano
- Human Genome Center Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Kenichiro Hata
- Department of Maternal-Fetal Biology, National Research Institute for Child Health and Development, Tokyo, Japan
| | - Seishi Ogawa
- Department of Pathology and Tumor Biology, Graduate School of Medicine, Kyoto University, Kyoto, Japan.,Institute for the Advanced Study of Human Biology (WPI-ASHBi), Kyoto University, Kyoto, Japan.,Department of Medicine, Center for Hematology and Regenerative Medicine, Karolinska Institutet, Huddinge, Sweden
| | - Junko Takita
- Department of Pediatrics, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan. .,Department of Pediatrics, Kyoto University, Kyoto, Japan.
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28
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Dynamins 2 and 3 control the migration of human megakaryocytes by regulating CXCR4 surface expression and ITGB1 activity. Blood Adv 2019; 2:3540-3552. [PMID: 30538113 DOI: 10.1182/bloodadvances.2018021923] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2018] [Accepted: 11/04/2018] [Indexed: 12/14/2022] Open
Abstract
Megakaryocyte (MK) migration from the bone marrow periosteal niche toward the vascular niche is a prerequisite for proplatelet extension and release into the circulation. The mechanism for this highly coordinated process is poorly understood. Here we show that dynasore (DNSR), a small-molecule inhibitor of dynamins (DNMs), or short hairpin RNA knockdown of DNM2 and DNM3 impairs directional migration in a human MK cell line or MKs derived from cultured CD34+ cells. Because cell migration requires actin cytoskeletal rearrangements, we measured actin polymerization and the activity of cytoskeleton regulator RhoA and found them to be decreased after inhibition of DNM2 and DNM3. Because SDF-1α is important for hematopoiesis, we studied the expression of its receptor CXCR4 in DNSR-treated cells. CXCR4 expression on the cell surface was increased, at least partially because of slower endocytosis and internalization after SDF-1α treatment. Combined inhibition of DNM2 and DNM3 or forced expression of dominant-negative Dnm2-K44A or GTPase-defective DNM3 diminished β1 integrin (ITGB1) activity. DNSR-treated MKs showed an abnormally clustered staining pattern of Rab11, a marker of recycling endosomes. This suggests decreased recruitment of the recycling pathway in DNSR-treated cells. Altogether, we show that the GTPase activity of DNMs, which governs endocytosis and regulates cell receptor trafficking, exerts control on MK migration toward SDF-1α gradients, such as those originating from the vascular niche. DNMs play a critical role in MKs by triggering membrane-cytoskeleton rearrangements downstream of CXCR4 and integrins.
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29
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Paganelli F, Lonetti A, Anselmi L, Martelli AM, Evangelisti C, Chiarini F. New advances in targeting aberrant signaling pathways in T-cell acute lymphoblastic leukemia. Adv Biol Regul 2019; 74:100649. [PMID: 31523031 DOI: 10.1016/j.jbior.2019.100649] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2019] [Revised: 08/24/2019] [Accepted: 09/03/2019] [Indexed: 10/26/2022]
Abstract
T-cell acute lymphoblastic leukemia (T-ALL) is an aggressive disorder characterized by malignant transformation of immature progenitors primed towards T-cell development. Over the past 15 years, advances in the molecular characterization of T-ALL have uncovered oncogenic key drivers and crucial signaling pathways of this disease, opening new chances for the development of novel therapeutic strategies. Currently, T-ALL patients are still treated with aggressive therapies, consisting of high dose multiagent chemotherapy. To minimize and overcome the unfavorable effects of these regimens, it is critical to identify innovative targets and test selective inhibitors of such targets. Major efforts are being made to develop small molecules against deregulated signaling pathways, which sustain T-ALL cell growth, survival, metabolism, and drug-resistance. This review will focus on recent improvements in the understanding of the signaling pathways involved in the pathogenesis of T-ALL and on the challenging opportunities for T-ALL targeted therapies.
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Affiliation(s)
- Francesca Paganelli
- Institute of Molecular Genetics, Luigi Luca Cavalli-Sforza-CNR National Research Council of Italy, Bologna, Italy; IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy; Department of Biomedical and Neuromotor Sciences, University of Bologna, Bologna, Italy
| | - Annalisa Lonetti
- "Giorgio Prodi" Cancer Research Center, University of Bologna, Bologna, Italy
| | - Laura Anselmi
- Department of Biomedical, Metabolic, and Neural Sciences, Section of Morphology, Signal Transduction Unit, University of Modena and Reggio Emilia, Modena, Italy
| | - Alberto M Martelli
- Department of Biomedical and Neuromotor Sciences, University of Bologna, Bologna, Italy
| | - Camilla Evangelisti
- Institute of Molecular Genetics, Luigi Luca Cavalli-Sforza-CNR National Research Council of Italy, Bologna, Italy; IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy
| | - Francesca Chiarini
- Institute of Molecular Genetics, Luigi Luca Cavalli-Sforza-CNR National Research Council of Italy, Bologna, Italy; IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy.
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30
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Moosic KB, Paila U, Olson KC, Dziewulska K, Wang TT, Xing JC, Ratan A, Feith DJ, Loughran TP, Olson TL. Genomics of LGL leukemia and select other rare leukemia/lymphomas. Best Pract Res Clin Haematol 2019; 32:196-206. [PMID: 31585620 PMCID: PMC6779335 DOI: 10.1016/j.beha.2019.06.003] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2019] [Accepted: 06/04/2019] [Indexed: 01/04/2023]
Abstract
Genomic analysis of cancer offers the hope of identifying new treatments or aiding in the selection of existing treatments. Rare leukemias pose additional challenges in this regard as samples may be hard to acquire and when found the underlying pathway may not be attractive to drug development since so few individuals are affected. In this case, it can be useful to identify common mutational overlap among subsets of rare leukemias to increase the number of individuals that may benefit from a targeted therapy. This chapter examines the current mutational landscape of large granular lymphocyte (LGL) leukemia with a focus on STAT3 mutations, the most common mutation in LGL leukemia to date. We examined the linkage between these mutations and autoimmune symptoms and disorders, in cases of obvious and suspected LGL leukemia. We then summarized and compared mutations in a set of other rare leukemias that also have JAK/STAT signaling pathway activation brought about by genomic changes. These include T-cell acute lymphoblastic leukemia (T-ALL), T-cell prolymphocytic leukemia (T-PLL), cutaneous T-cell lymphoma (CTCL), select peripheral T-cell lymphoma (PTCL), and adult T-cell leukemia/lymphoma (ATLL). Though STAT3 activation is common in these leukemias, the way in which it is achieved, such as the activating cytokine pathway and/or the co-mutational background, is quite diverse.
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Affiliation(s)
- Katharine B Moosic
- University of Virginia Cancer Center, 345 Crispell Dr, PO Box 801378, Charlottesville, VA, 22908, USA; Department of Medicine, Division of Hematology/Oncology, 345 Crispell Dr, PO Box 801378, Charlottesville, VA, 22908, USA; Department of Pathology, 345 Crispell Dr, PO Box 801378, Charlottesville, VA, 22908, USA.
| | - Umadevi Paila
- Center for Public Health Genomics, MSB-6111A, West Complex, 1335 Lee Street, Charlottesville, VA, 22908, USA.
| | - Kristine C Olson
- University of Virginia Cancer Center, 345 Crispell Dr, PO Box 801378, Charlottesville, VA, 22908, USA; Department of Medicine, Division of Hematology/Oncology, 345 Crispell Dr, PO Box 801378, Charlottesville, VA, 22908, USA.
| | - Karolina Dziewulska
- University of Virginia Cancer Center, 345 Crispell Dr, PO Box 801378, Charlottesville, VA, 22908, USA; Department of Medicine, Division of Hematology/Oncology, 345 Crispell Dr, PO Box 801378, Charlottesville, VA, 22908, USA; Department of Pathology, 345 Crispell Dr, PO Box 801378, Charlottesville, VA, 22908, USA.
| | - T Tiffany Wang
- University of Virginia Cancer Center, 345 Crispell Dr, PO Box 801378, Charlottesville, VA, 22908, USA; Department of Medicine, Division of Hematology/Oncology, 345 Crispell Dr, PO Box 801378, Charlottesville, VA, 22908, USA; Department of Microbiology, Immunology, and Cancer Biology, 345 Crispell Dr, PO Box 801378, Charlottesville, VA, 22908, USA.
| | - Jeffrey C Xing
- University of Virginia Cancer Center, 345 Crispell Dr, PO Box 801378, Charlottesville, VA, 22908, USA; Department of Medicine, Division of Hematology/Oncology, 345 Crispell Dr, PO Box 801378, Charlottesville, VA, 22908, USA; Department of Biomedical Engineering, University of Virginia School of Medicine, Charlottesville, VA, 22908, USA.
| | - Aakrosh Ratan
- Center for Public Health Genomics, MSB-6131F, West Complex, 1300 JPA, Charlottesville, VA, 22908, USA.
| | - David J Feith
- University of Virginia Cancer Center, 345 Crispell Dr, PO Box 801378, Charlottesville, VA, 22908, USA; Department of Medicine, Division of Hematology/Oncology, 345 Crispell Dr, PO Box 801378, Charlottesville, VA, 22908, USA.
| | - Thomas P Loughran
- University of Virginia Cancer Center, 345 Crispell Dr, PO Box 801378, Charlottesville, VA, 22908, USA; Department of Medicine, Division of Hematology/Oncology, 345 Crispell Dr, PO Box 801378, Charlottesville, VA, 22908, USA.
| | - Thomas L Olson
- University of Virginia Cancer Center, 345 Crispell Dr, PO Box 801378, Charlottesville, VA, 22908, USA; Department of Medicine, Division of Hematology/Oncology, 345 Crispell Dr, PO Box 801378, Charlottesville, VA, 22908, USA.
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31
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De Smedt R, Morscio J, Goossens S, Van Vlierberghe P. Targeting steroid resistance in T-cell acute lymphoblastic leukemia. Blood Rev 2019; 38:100591. [PMID: 31353059 DOI: 10.1016/j.blre.2019.100591] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2019] [Revised: 07/15/2019] [Accepted: 07/18/2019] [Indexed: 12/16/2022]
Abstract
T-cell acute lymphoblastic leukemia (T-ALL) is characterized by a variable response to steroids during induction and/or consolidation therapy. Notably, recent work suggested that these differences in glucocorticoid sensitivity might, at least in part, be mediated by hyperactivation of specific oncogenic pathways such as RAS/MEK/ERK, PI3K/AKT and IL7R/JAK/STAT. In this review, we elaborate on putative associations between aberrant signaling, therapy resistance, incidence of relapse and clinical outcome in human T-ALL. Furthermore, we emphasize that this potential association with clinical parameters might also be mediated by the tumor microenvironment as a result of increased sensitivity of leukemic T-cells towards cytokine induced signaling pathway activation. With this in mind, we provide an overview of small molecule inhibitors that might have clinical potential for the treatment of human T-ALL in the near future as a result of their ability to overcome steroid resistance thereby potentially increasing survival rates in this aggressive hematological neoplasm.
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Affiliation(s)
- Renate De Smedt
- Department of Biomolecular Medicine, Ghent University, Ghent, Belgium; Cancer Research Institute Ghent (CRIG), Ghent, Belgium
| | - Julie Morscio
- Department of Biomolecular Medicine, Ghent University, Ghent, Belgium; Cancer Research Institute Ghent (CRIG), Ghent, Belgium
| | - Steven Goossens
- Department of Biomolecular Medicine, Ghent University, Ghent, Belgium; Cancer Research Institute Ghent (CRIG), Ghent, Belgium; Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Pieter Van Vlierberghe
- Department of Biomolecular Medicine, Ghent University, Ghent, Belgium; Cancer Research Institute Ghent (CRIG), Ghent, Belgium.
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32
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Eaton N, Drew C, Wieser J, Munday AD, Falet H. Dynamin 2 is required for GPVI signaling and platelet hemostatic function in mice. Haematologica 2019; 105:1414-1423. [PMID: 31296575 PMCID: PMC7193499 DOI: 10.3324/haematol.2019.218644] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2019] [Accepted: 07/09/2019] [Indexed: 01/06/2023] Open
Abstract
Receptor-mediated endocytosis, which contributes to a wide range of cellular functions, including receptor signaling, cell adhesion, and migration, requires endocytic vesicle release by the large GTPase dynamin 2. Here, the role of dynamin 2 was investigated in platelet hemostatic function using both pharmacological and genetic approaches. Dnm2fl/fl Pf4-Cre (Dnm2Plt−/−) mice specifically lacking dynamin 2 within the platelet lineage developed severe thrombocytopenia and bleeding diathesis and Dnm2Plt−/− platelets adhered poorly to collagen under arterial shear rates. Signaling via the collagen receptor GPVI was impaired in platelets treated with the dynamin GTPase inhibitor dynasore, as evidenced by poor protein tyrosine phosphorylation, including that of the proximal tyrosine kinase Lyn on its activating tyrosine 396 residue. Platelet stimulation via GPVI resulted in a slight decrease in GPVI, which was maintained by dynasore treatment. Dynasore-treated platelets had attenuated function when stimulated via GPVI, as evidenced by reduced GPIbα downregulation, α-granule release, integrin αIIbβ3 activation, and spreading onto immobilized fibrinogen. By contrast, responses to the G-protein coupled receptor agonist thrombin were minimally affected by dynasore treatment. GPVI expression was severely reduced in Dnm2Plt−/− platelets, which were dysfunctional in response to stimulation via GPVI, and to a lesser extent to thrombin. Dnm2Plt−/− platelets lacked fibrinogen in their α-granules, but retained von Willebrand factor. Taken together, the data show that dynamin 2 plays a proximal role in signaling via the collagen receptor GPVI and is required for fibrinogen uptake and normal platelet hemostatic function.
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Affiliation(s)
- Nathan Eaton
- Blood Research Institute, Versiti, Milwaukee, WI.,Department of Cell Biology, Neurobiology, and Anatomy, Medical College of Wisconsin, Milwaukee, WI
| | - Caleb Drew
- Blood Research Institute, Versiti, Milwaukee, WI
| | - Jon Wieser
- Blood Research Institute, Versiti, Milwaukee, WI
| | - Adam D Munday
- Bloodworks Northwest Research Institute, Seattle, WA.,Division of Hematology, Department of Medicine, University of Washington, Seattle, WA, USA
| | - Hervé Falet
- Blood Research Institute, Versiti, Milwaukee, WI .,Department of Cell Biology, Neurobiology, and Anatomy, Medical College of Wisconsin, Milwaukee, WI
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33
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Strategies to Overcome Resistance Mechanisms in T-Cell Acute Lymphoblastic Leukemia. Int J Mol Sci 2019; 20:ijms20123021. [PMID: 31226848 PMCID: PMC6627878 DOI: 10.3390/ijms20123021] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2019] [Revised: 06/14/2019] [Accepted: 06/17/2019] [Indexed: 12/20/2022] Open
Abstract
Chemoresistance is a major cause of recurrence and death from T-cell acute lymphoblastic leukemia (T-ALL), both in adult and pediatric patients. In the majority of cases, drug-resistant disease is treated by selecting a combination of other drugs, without understanding the molecular mechanisms by which malignant cells escape chemotherapeutic treatments, even though a more detailed genomic characterization and the identification of actionable disease targets may enable informed decision of new agents to improve patient outcomes. In this work, we describe pathways of resistance to common chemotherapeutic agents including glucocorticoids and review the resistance mechanisms to targeted therapy such as IL7R, PI3K-AKT-mTOR, NOTCH1, BRD4/MYC, Cyclin D3: CDK4/CDK6, BCL2 inhibitors, and selective inhibitors of nuclear export (SINE). Finally, to overcome the limitations of the current trial-and-error method, we summarize the experiences of anti-cancer drug sensitivity resistance profiling (DSRP) approaches as a rapid and relevant strategy to infer drug activity and provide functional information to assist clinical decision one patient at a time.
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Mani I, Pandey KN. Emerging concepts of receptor endocytosis and concurrent intracellular signaling: Mechanisms of guanylyl cyclase/natriuretic peptide receptor-A activation and trafficking. Cell Signal 2019; 60:17-30. [PMID: 30951863 DOI: 10.1016/j.cellsig.2019.03.022] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2019] [Revised: 03/27/2019] [Accepted: 03/28/2019] [Indexed: 12/15/2022]
Abstract
Endocytosis is a prominent clathrin-mediated mechanism for concentrated uptake and internalization of ligand-receptor complexes, also known as cargo. Internalization of cargo is the fundamental mechanism for receptor-dependent regulation of cell membrane function, intracellular signal transduction, and neurotransmission, as well as other biological and physiological activities. However, the intrinsic mechanisms of receptor endocytosis and contemporaneous intracellular signaling are not well understood. We review emerging concepts of receptor endocytosis with concurrent intracellular signaling, using a typical example of guanylyl cyclase/natriuretic peptide receptor-A (NPRA) internalization, subcellular trafficking, and simultaneous generation of second-messenger cGMP and signaling in intact cells. We highlight the role of short-signal motifs located in the carboxyl-terminal regions of membrane receptors during their internalization and subsequent receptor trafficking in organelles that are not traditionally studied in this context, including nuclei and mitochondria. This review sheds light on the importance of future investigations of receptor endocytosis and trafficking in live cells and intact animals in vivo in physiological context.
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Affiliation(s)
- Indra Mani
- Department of Physiology, Tulane University Health Sciences Center and School of Medicine, 1430 Tulane Avenue, New Orleans, Louisiana 70112, United States
| | - Kailash N Pandey
- Department of Physiology, Tulane University Health Sciences Center and School of Medicine, 1430 Tulane Avenue, New Orleans, Louisiana 70112, United States.
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35
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Sondka Z, Bamford S, Cole CG, Ward SA, Dunham I, Forbes SA. The COSMIC Cancer Gene Census: describing genetic dysfunction across all human cancers. Nat Rev Cancer 2018; 18:696-705. [PMID: 30293088 PMCID: PMC6450507 DOI: 10.1038/s41568-018-0060-1] [Citation(s) in RCA: 833] [Impact Index Per Article: 138.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The Catalogue of Somatic Mutations in Cancer (COSMIC) Cancer Gene Census (CGC) is an expert-curated description of the genes driving human cancer that is used as a standard in cancer genetics across basic research, medical reporting and pharmaceutical development. After a major expansion and complete re-evaluation, the 2018 CGC describes in detail the effect of 719 cancer-driving genes. The recent expansion includes functional and mechanistic descriptions of how each gene contributes to disease generation in terms of the key cancer hallmarks and the impact of mutations on gene and protein function. These functional characteristics depict the extraordinary complexity of cancer biology and suggest multiple cancer-related functions for many genes, which are often highly tissue-dependent or tumour stage-dependent. The 2018 CGC encompasses a second tier, describing an expanding list of genes (currently 145) from more recent cancer studies that show supportive but less detailed indications of a role in cancer.
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Affiliation(s)
- Zbyslaw Sondka
- Wellcome Sanger Institute, Wellcome Genome Campus, Hinxton, Cambridge, UK.
- Open Targets, Wellcome Genome Campus, Hinxton, Cambridge, UK.
| | - Sally Bamford
- Wellcome Sanger Institute, Wellcome Genome Campus, Hinxton, Cambridge, UK
| | - Charlotte G Cole
- Wellcome Sanger Institute, Wellcome Genome Campus, Hinxton, Cambridge, UK
| | - Sari A Ward
- Wellcome Sanger Institute, Wellcome Genome Campus, Hinxton, Cambridge, UK
| | - Ian Dunham
- Open Targets, Wellcome Genome Campus, Hinxton, Cambridge, UK
- European Molecular Biology Laboratory, European Bioinformatics Institute (EMBL-EBI), Wellcome Genome Campus, Hinxton, Cambridge, UK
| | - Simon A Forbes
- Wellcome Sanger Institute, Wellcome Genome Campus, Hinxton, Cambridge, UK
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36
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Restricted cell cycle is essential for clonal evolution and therapeutic resistance of pre-leukemic stem cells. Nat Commun 2018; 9:3535. [PMID: 30166543 PMCID: PMC6117297 DOI: 10.1038/s41467-018-06021-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2018] [Accepted: 08/02/2018] [Indexed: 01/02/2023] Open
Abstract
Pre-leukemic stem cells (pre-LSCs) give rise to leukemic stem cells through acquisition of additional gene mutations and are an important source of relapse following chemotherapy. We postulated that cell-cycle kinetics of pre-LSCs may be an important determinant of clonal evolution and therapeutic resistance. Using a doxycycline-inducible H2B-GFP transgene in a mouse model of T-cell acute lymphoblastic leukemia to study cell cycle in vivo, we show that self-renewal, clonal evolution and therapeutic resistance are limited to a rare population of pre-LSCs with restricted cell cycle. We show that proliferative pre-LSCs are unable to return to a cell cycle-restricted state. Cell cycle-restricted pre-LSCs have activation of p53 and its downstream cell-cycle inhibitor p21. Furthermore, absence of p21 leads to proliferation of pre-LSCs, with clonal extinction through loss of asymmetric cell division and terminal differentiation. Thus, inducing proliferation of pre-LSCs represents a promising strategy to increase cure rates for acute leukemia.
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37
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Horowitz NA, Akasha D, Rowe JM. Advances in the genetics of acute lymphoblastic leukemia in adults and the potential clinical implications. Expert Rev Hematol 2018; 11:781-791. [DOI: 10.1080/17474086.2018.1509702] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Netanel A. Horowitz
- Department of Hematology and Bone Marrow Transplantation, Rambam Health Care Campus, Haifa, Israel
- Ruth and Bruce Rappaport Faculty of Medicine, Technion, Haifa, Israel
| | - Doaa Akasha
- Department of Hematology and Bone Marrow Transplantation, Rambam Health Care Campus, Haifa, Israel
| | - Jacob M. Rowe
- Department of Hematology and Bone Marrow Transplantation, Rambam Health Care Campus, Haifa, Israel
- Ruth and Bruce Rappaport Faculty of Medicine, Technion, Haifa, Israel
- Department of Hematology, Shaare Zedek Medical Center, Jerusalem, Israel
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38
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Single-cell sequencing reveals the origin and the order of mutation acquisition in T-cell acute lymphoblastic leukemia. Leukemia 2018; 32:1358-1369. [PMID: 29740158 PMCID: PMC5990522 DOI: 10.1038/s41375-018-0127-8] [Citation(s) in RCA: 62] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2017] [Revised: 02/28/2018] [Accepted: 03/21/2018] [Indexed: 02/06/2023]
Abstract
Next-generation sequencing has provided a detailed overview of the various genomic lesions implicated in the pathogenesis of T-cell acute lymphoblastic leukemia (T-ALL). Typically, 10–20 protein-altering lesions are found in T-ALL cells at diagnosis. However, it is currently unclear in which order these mutations are acquired and in which progenitor cells this is initiated. To address these questions, we used targeted single-cell sequencing of total bone marrow cells and CD34+CD38− multipotent progenitor cells for four T-ALL cases. Hierarchical clustering detected a dominant leukemia cluster at diagnosis, accompanied by a few smaller clusters harboring only a fraction of the mutations. We developed a graph-based algorithm to determine the order of mutation acquisition. Two of the four patients had an early event in a known oncogene (MED12, STAT5B) among various pre-leukemic events. Intermediate events included loss of 9p21 (CDKN2A/B) and acquisition of fusion genes, while NOTCH1 mutations were typically late events. Analysis of CD34+CD38− cells and myeloid progenitors revealed that in half of the cases somatic mutations were detectable in multipotent progenitor cells. We demonstrate that targeted single-cell sequencing can elucidate the order of mutation acquisition in T-ALL and that T-ALL development can start in a multipotent progenitor cell.
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39
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Somanna NK, Mani I, Tripathi S, Pandey KN. Clathrin-dependent internalization, signaling, and metabolic processing of guanylyl cyclase/natriuretic peptide receptor-A. Mol Cell Biochem 2017; 441:135-150. [PMID: 28900772 DOI: 10.1007/s11010-017-3180-0] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2017] [Accepted: 09/01/2017] [Indexed: 12/24/2022]
Abstract
Cardiac hormones, atrial and brain natriuretic peptides (ANP and BNP), have pivotal roles in renal hemodynamics, neuroendocrine signaling, blood pressure regulation, and cardiovascular homeostasis. Binding of ANP and BNP to the guanylyl cyclase/natriuretic peptide receptor-A (GC-A/NPRA) induces rapid internalization and trafficking of the receptor via endolysosomal compartments, with concurrent generation of cGMP. However, the mechanisms of the endocytotic processes of NPRA are not well understood. The present study, using 125I-ANP binding assay and confocal microscopy, examined the function of dynamin in the internalization of NPRA in stably transfected human embryonic kidney-293 (HEK-293) cells. Treatment of recombinant HEK-293 cells with ANP time-dependently accelerated the internalization of receptor from the cell surface to the cell interior. However, the internalization of ligand-receptor complexes of NPRA was drastically decreased by the specific inhibitors of clathrin- and dynamin-dependent receptor internalization, almost 85% by monodansylcadaverine, 80% by chlorpromazine, and 90% by mutant dynamin, which are specific blockers of endocytic vesicle formation. Visualizing the internalization of NPRA and enhanced GFP-tagged NPRA in HEK-293 cells by confocal microscopy demonstrated the formation of endocytic vesicles after 5 min of ANP treatment; this effect was blocked by the inhibitors of clathrin and by mutant dynamin construct. Our results suggest that NPRA undergoes internalization via clathrin-mediated endocytosis as part of its normal itinerary, including trafficking, signaling, and metabolic degradation.
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Affiliation(s)
- Naveen K Somanna
- Department of Physiology, SL-39, Tulane University Health Sciences Center and School of Medicine, 1430 Tulane Avenue, New Orleans, LA, 70112, USA
| | - Indra Mani
- Department of Physiology, SL-39, Tulane University Health Sciences Center and School of Medicine, 1430 Tulane Avenue, New Orleans, LA, 70112, USA
| | - Satyabha Tripathi
- Department of Physiology, SL-39, Tulane University Health Sciences Center and School of Medicine, 1430 Tulane Avenue, New Orleans, LA, 70112, USA
| | - Kailash N Pandey
- Department of Physiology, SL-39, Tulane University Health Sciences Center and School of Medicine, 1430 Tulane Avenue, New Orleans, LA, 70112, USA.
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40
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Auer F, Ingenhag D, Pinkert S, Kracker S, Hacein-Bey-Abina S, Cavazzana M, Gombert M, Martin-Lorenzo A, Lin MH, Vicente-Dueñas C, Sánchez-García I, Borkhardt A, Hauer J. Activation-induced cytidine deaminase prevents pro-B cell acute lymphoblastic leukemia by functioning as a negative regulator in Rag1 deficient pro-B cells. Oncotarget 2017; 8:75797-75807. [PMID: 29100269 PMCID: PMC5652663 DOI: 10.18632/oncotarget.20563] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2017] [Accepted: 07/31/2017] [Indexed: 11/25/2022] Open
Abstract
Activation-induced cytidine deaminase (AID) is essential for somatic hypermutation and class switch recombination in mature B-cells, while AID was also shown to play a role in developing pre-BCR/BCR-positive B-cells of the bone marrow. To further elucidate a potential function of Aid in the bone marrow prior to V(D)J-recombination, we utilized an in vivo model which exerts a B-cell developmental arrest at the pro-B cell stage with low frequencies of pro-B cell acute lymphoblastic leukemia (pro-B ALL) development. Therefore, p19Arf-/-Rag1-/- (AR) mice were crossed with Aid-deficient mice (ARA). Surprisingly, loss of Aid expression in pro-B cells accelerated pro-B ALL incidence from 30% (AR) to 98% (ARA). This effect was Aid dose dependent, since Aid+/- animals of the same background displayed a significantly lower incidence (83%). Furthermore, B-cell-specific Aid up-regulation was observed in Aid-competent pro-B ALLs. Additional whole exome/sanger sequencing of murine pro-B ALLs revealed an accumulation of recurrent somatic Jak3 (p.R653H, p.V670A) and Dnm2 (p.G397R) mutations, which highlights the importance of active IL7R signaling in the pro-B ALL blast cells. These findings were further supported by an enhanced proliferative potential of ARA pro-B cells compared to Aid-competent cells from the same genetic background. In summary, we show that both Aid and Rag1 act as a negative regulators in pro-B cells, preventing pro-B ALL.
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Affiliation(s)
- Franziska Auer
- Department of Pediatric Oncology, Hematology and Clinical Immunology, Heinrich-Heine University Duesseldorf, Medical Faculty, Duesseldorf, Germany
| | - Deborah Ingenhag
- Department of Pediatric Oncology, Hematology and Clinical Immunology, Heinrich-Heine University Duesseldorf, Medical Faculty, Duesseldorf, Germany
| | - Stefan Pinkert
- Department of Pediatric Oncology, Hematology and Clinical Immunology, Heinrich-Heine University Duesseldorf, Medical Faculty, Duesseldorf, Germany
| | - Sven Kracker
- Université Paris Descartes, Sorbonne Paris Cité, Imagine Institute, Paris, France.,INSERM UMR 1163, Human Lymphohematopoiesis Laboratory, Paris, France
| | - Salima Hacein-Bey-Abina
- UTCBS CNRS UMR 8258, INSERM U1022, Faculté de Pharmacie de Paris, Université Paris Descartes, Sorbonne Paris Cité, Chimie Paris-Tech, Paris, France.,Clinical Immunology Laboratory, Groupe Hospitalier Universitaire Paris-Sud, Hôpital Kremlin-Bicêtre, Assistance Publique-Hôpitaux de Paris, Le-Kremlin-Bicêtre, France
| | - Marina Cavazzana
- Université Paris Descartes, Sorbonne Paris Cité, Imagine Institute, Paris, France.,INSERM UMR 1163, Human Lymphohematopoiesis Laboratory, Paris, France
| | - Michael Gombert
- Department of Pediatric Oncology, Hematology and Clinical Immunology, Heinrich-Heine University Duesseldorf, Medical Faculty, Duesseldorf, Germany
| | - Alberto Martin-Lorenzo
- Experimental Therapeutics and Translational Oncology Program, Instituto de Biología Molecular y Celular del Cáncer, CSIC/ Universidad de Salamanca, Campus M. de Unamuno s/n, Salamanca, Spain.,Institute of Biomedical Research of Salamanca, Salamanca, Spain
| | - Min-Hui Lin
- Department of Pediatric Oncology, Hematology and Clinical Immunology, Heinrich-Heine University Duesseldorf, Medical Faculty, Duesseldorf, Germany
| | | | - Isidro Sánchez-García
- Experimental Therapeutics and Translational Oncology Program, Instituto de Biología Molecular y Celular del Cáncer, CSIC/ Universidad de Salamanca, Campus M. de Unamuno s/n, Salamanca, Spain.,Institute of Biomedical Research of Salamanca, Salamanca, Spain
| | - Arndt Borkhardt
- Department of Pediatric Oncology, Hematology and Clinical Immunology, Heinrich-Heine University Duesseldorf, Medical Faculty, Duesseldorf, Germany
| | - Julia Hauer
- Department of Pediatric Oncology, Hematology and Clinical Immunology, Heinrich-Heine University Duesseldorf, Medical Faculty, Duesseldorf, Germany
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41
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Bongiovanni D, Saccomani V, Piovan E. Aberrant Signaling Pathways in T-Cell Acute Lymphoblastic Leukemia. Int J Mol Sci 2017; 18:ijms18091904. [PMID: 28872614 PMCID: PMC5618553 DOI: 10.3390/ijms18091904] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2017] [Revised: 08/30/2017] [Accepted: 09/01/2017] [Indexed: 12/12/2022] Open
Abstract
T-cell acute lymphoblastic leukemia (T-ALL) is an aggressive disease caused by the malignant transformation of immature progenitors primed towards T-cell development. Clinically, T-ALL patients present with diffuse infiltration of the bone marrow by immature T-cell blasts high blood cell counts, mediastinal involvement, and diffusion to the central nervous system. In the past decade, the genomic landscape of T-ALL has been the target of intense research. The identification of specific genomic alterations has contributed to identify strong oncogenic drivers and signaling pathways regulating leukemia growth. Notwithstanding, T-ALL patients are still treated with high-dose multiagent chemotherapy, potentially exposing these patients to considerable acute and long-term side effects. This review summarizes recent advances in our understanding of the signaling pathways relevant for the pathogenesis of T-ALL and the opportunities offered for targeted therapy.
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Affiliation(s)
- Deborah Bongiovanni
- Dipartimento di Scienze Chirurgiche, Oncologiche e Gastroenterologiche, Universita' di Padova, Padova 35128, Italy.
| | - Valentina Saccomani
- Dipartimento di Scienze Chirurgiche, Oncologiche e Gastroenterologiche, Universita' di Padova, Padova 35128, Italy.
| | - Erich Piovan
- Dipartimento di Scienze Chirurgiche, Oncologiche e Gastroenterologiche, Universita' di Padova, Padova 35128, Italy.
- UOC Immunologia e Diagnostica Molecolare Oncologica, Istituto Oncologico Veneto IOV-IRCCS, Padova 35128, Italy.
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42
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Vadillo E, Dorantes-Acosta E, Pelayo R, Schnoor M. T cell acute lymphoblastic leukemia (T-ALL): New insights into the cellular origins and infiltration mechanisms common and unique among hematologic malignancies. Blood Rev 2017; 32:36-51. [PMID: 28830639 DOI: 10.1016/j.blre.2017.08.006] [Citation(s) in RCA: 101] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2017] [Revised: 08/08/2017] [Accepted: 08/12/2017] [Indexed: 02/06/2023]
Abstract
T-cell acute lymphoblastic leukemia (T-ALL) accounts for 15% and 25% of total childhood and adult ALL cases, respectively. During T-ALL, patients are at risk of organ infiltration by leukemic T-cells. Infiltration is a major consequence of disease relapse and correlates with poor prognosis. Transendothelial migration of leukemic cells is required to exit the blood stream into target organs. While mechanisms of normal T-cell transmigration are well known, the mechanisms of leukemic T-cell extravasation remain elusive; but involvement of chemokines, integrins and Notch signaling play critical roles. Here, we summarize current knowledge about molecular mechanisms of leukemic T-cell infiltration with special emphasis on the newly identified subtype early T-cell-progenitor (ETP)-ALL. Furthermore, we compare the extravasation potential of T-ALL cells with that of other hematologic malignancies such as B-ALL and acute myeloid leukemia (AML).
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Affiliation(s)
- Eduardo Vadillo
- Department for Molecular Biomedicine, Centre for Investigation and Advanced Studies of the National Polytechnic Institute (Cinvestav-IPN), 07360 Mexico City, Mexico.
| | - Elisa Dorantes-Acosta
- Leukemia Clinic, Children's Hospital of Mexico Federico Gómez, 06720 Mexico City, Mexico
| | - Rosana Pelayo
- Oncology Research Unit, National Medical Center, Mexican Institute for Social Security, 06720 Mexico City, Mexico
| | - Michael Schnoor
- Department for Molecular Biomedicine, Centre for Investigation and Advanced Studies of the National Polytechnic Institute (Cinvestav-IPN), 07360 Mexico City, Mexico.
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43
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The T-cell leukemia-associated ribosomal RPL10 R98S mutation enhances JAK-STAT signaling. Leukemia 2017; 32:809-819. [PMID: 28744013 PMCID: PMC5669462 DOI: 10.1038/leu.2017.225] [Citation(s) in RCA: 52] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2016] [Revised: 06/16/2017] [Accepted: 07/04/2017] [Indexed: 01/15/2023]
Abstract
Several somatic ribosome defects have recently been discovered in cancer, yet their oncogenic mechanisms remain poorly understood. Here we investigated the pathogenic role of the recurrent R98S mutation in ribosomal protein L10 (RPL10 R98S) found in T-cell acute lymphoblastic leukemia (T-ALL). The JAK-STAT signaling pathway is a critical controller of cellular proliferation and survival. A proteome screen revealed overexpression of several Jak-Stat signaling proteins in engineered RPL10 R98S mouse lymphoid cells, which we confirmed in hematopoietic cells from transgenic Rpl10 R98S mice and T-ALL xenograft samples. RPL10 R98S expressing cells displayed JAK-STAT pathway hyper-activation upon cytokine stimulation, as well as increased sensitivity to clinically used JAK-STAT inhibitors like pimozide. A mutually exclusive mutation pattern between RPL10 R98S and JAK-STAT mutations in T-ALL patients further suggests that RPL10 R98S functionally mimics JAK-STAT activation. Mechanistically, besides transcriptional changes, RPL10 R98S caused reduction of apparent programmed ribosomal frameshifting at several ribosomal frameshift signals in mouse and human Jak-Stat genes, as well as decreased Jak1 degradation. Of further medical interest, RPL10 R98S cells showed reduced proteasome activity and enhanced sensitivity to clinical proteasome inhibitors. Collectively, we describe modulation of the JAK-STAT cascade as a novel cancer-promoting activity of a ribosomal mutation, and expand the relevance of this cascade in leukemia.
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Brown FC, Collett M, Tremblay CS, Rank G, De Camilli P, Booth CJ, Bitoun M, Robinson PJ, Kile BT, Jane SM, Curtis DJ. Loss of Dynamin 2 GTPase function results in microcytic anaemia. Br J Haematol 2017; 178:616-628. [PMID: 28466468 DOI: 10.1111/bjh.14709] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2016] [Accepted: 01/27/2017] [Indexed: 12/24/2022]
Abstract
In a dominant mouse ethylnitrosurea mutagenesis screen for genes regulating erythropoiesis, we identified a pedigree with a novel microcytic hypochromia caused by a V235G missense mutation in Dynamin 2 (Dnm2). Mutations in Dnm2, a GTPase, are highly disease-specific and have been implicated in four forms of human diseases: centronuclear myopathy, Charcot-Marie Tooth neuropathy and, more recently, T-cell leukaemia and Hereditary Spastic Paraplegia, but red cell abnormalities have not been reported to date. The V235G mutation lies within a crucial GTP nucleotide-binding pocket of Dnm2, and resulted in defective GTPase activity and incompatibility with life in the homozygous state. Dnm2 is an essential mediator of clathrin-mediated endocytosis, which is required for the uptake of transferrin (Tf) into red cells for incorporation of haem. Accordingly, we observed significantly reduced Tf uptake by Dnm2+/V235G cells, which led to impaired endosome formation. Despite these deficiencies, surprisingly all iron studies were unchanged, suggesting an unexplained alternative mechanism underlies microcytic anaemia in Dnm2+/V235G mice. This study provides the first in vivo evidence for the requirements of Dnm2 in normal erythropoiesis.
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Affiliation(s)
- Fiona C Brown
- Australian Centre for Blood Diseases, Central Clinical School, Monash University and Alfred Health, Melbourne, Vic., Australia
| | - Michael Collett
- Cell Signalling Unit, Children's Medical Research Institute, The University of Sydney, Sydney, NSW, Australia
| | - Cedric S Tremblay
- Australian Centre for Blood Diseases, Central Clinical School, Monash University and Alfred Health, Melbourne, Vic., Australia
| | - Gerhard Rank
- Rotary Bone Marrow Research Laboratory, Royal Melbourne Hospital, Melbourne, Vic., Australia
| | - Pietro De Camilli
- Departments of Neuroscience and Cell Biology, Howard Hughes Medical Institute, Kavli Institute for Neuroscience, Yale University School of Medicine, New Haven, CT, USA
| | - Carmen J Booth
- Section of Comparative Medicine, Yale University School of Medicine, New Haven, CT, USA
| | - Marc Bitoun
- Research Centre for Myology, UPMC Univ Paris 06 and INSERM UMRS 974, CNRS FRE 3617, Institute of Myology, Paris, France
| | - Phillip J Robinson
- Cell Signalling Unit, Children's Medical Research Institute, The University of Sydney, Sydney, NSW, Australia
| | - Benjamin T Kile
- The Walter and Eliza Hall Institute of Medical Research, Melbourne, Vic., Australia
| | - Stephen M Jane
- Australian Centre for Blood Diseases, Central Clinical School, Monash University and Alfred Health, Melbourne, Vic., Australia
| | - David J Curtis
- Australian Centre for Blood Diseases, Central Clinical School, Monash University and Alfred Health, Melbourne, Vic., Australia
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Girardi T, Vicente C, Cools J, De Keersmaecker K. The genetics and molecular biology of T-ALL. Blood 2017; 129:1113-1123. [PMID: 28115373 PMCID: PMC5363819 DOI: 10.1182/blood-2016-10-706465] [Citation(s) in RCA: 222] [Impact Index Per Article: 31.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2016] [Accepted: 11/10/2016] [Indexed: 12/13/2022] Open
Abstract
T-cell acute lymphoblastic leukemia (T-ALL) is an aggressive malignancy caused by the accumulation of genomic lesions that affect the development of T cells. For many years, it has been established that deregulated expression of transcription factors, impairment of the CDKN2A/2B cell-cycle regulators, and hyperactive NOTCH1 signaling play prominent roles in the pathogenesis of this leukemia. In the past decade, systematic screening of T-ALL genomes by high-resolution copy-number arrays and next-generation sequencing technologies has revealed that T-cell progenitors accumulate additional mutations affecting JAK/STAT signaling, protein translation, and epigenetic control, providing novel attractive targets for therapy. In this review, we provide an update on our knowledge of T-ALL pathogenesis, the opportunities for the introduction of targeted therapy, and the challenges that are still ahead.
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Affiliation(s)
- Tiziana Girardi
- Department of Oncology, KU Leuven, Leuven, Belgium
- Leuven Cancer Institute (LKI), Leuven, Belgium
| | - Carmen Vicente
- Leuven Cancer Institute (LKI), Leuven, Belgium
- VIB Center for the Biology of Disease, Leuven, Belgium
- Center for Human Genetics, KU Leuven, Leuven, Belgium
| | - Jan Cools
- Leuven Cancer Institute (LKI), Leuven, Belgium
- VIB Center for the Biology of Disease, Leuven, Belgium
- Center for Human Genetics, KU Leuven, Leuven, Belgium
| | - Kim De Keersmaecker
- Department of Oncology, KU Leuven, Leuven, Belgium
- Leuven Cancer Institute (LKI), Leuven, Belgium
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46
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Witkowski MT, Hu Y, Roberts KG, Boer JM, McKenzie MD, Liu GJ, Le Grice OD, Tremblay CS, Ghisi M, Willson TA, Horstmann MA, Aifantis I, Cimmino L, Frietze S, den Boer ML, Mullighan CG, Smyth GK, Dickins RA. Conserved IKAROS-regulated genes associated with B-progenitor acute lymphoblastic leukemia outcome. J Exp Med 2017; 214:773-791. [PMID: 28190000 PMCID: PMC5339666 DOI: 10.1084/jem.20160048] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2016] [Revised: 10/05/2016] [Accepted: 12/19/2016] [Indexed: 12/31/2022] Open
Abstract
Genetic alterations disrupting the transcription factor IKZF1 (encoding IKAROS) are associated with poor outcome in B lineage acute lymphoblastic leukemia (B-ALL) and occur in >70% of the high-risk BCR-ABL1+ (Ph+) and Ph-like disease subtypes. To examine IKAROS function in this context, we have developed novel mouse models allowing reversible RNAi-based control of Ikaros expression in established B-ALL in vivo. Notably, leukemias driven by combined BCR-ABL1 expression and Ikaros suppression rapidly regress when endogenous Ikaros is restored, causing sustained disease remission or ablation. Comparison of transcriptional profiles accompanying dynamic Ikaros perturbation in murine B-ALL in vivo with two independent human B-ALL cohorts identified nine evolutionarily conserved IKAROS-repressed genes. Notably, high expression of six of these genes is associated with inferior event-free survival in both patient cohorts. Among them are EMP1, which was recently implicated in B-ALL proliferation and prednisolone resistance, and the novel target CTNND1, encoding P120-catenin. We demonstrate that elevated Ctnnd1 expression contributes to maintenance of murine B-ALL cells with compromised Ikaros function. These results suggest that IKZF1 alterations in B-ALL leads to induction of multiple genes associated with proliferation and treatment resistance, identifying potential new therapeutic targets for high-risk disease.
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Affiliation(s)
- Matthew T Witkowski
- Australian Centre for Blood Diseases, Monash University, Melbourne, Victoria 3004, Australia.,Molecular Medicine Division, Walter and Eliza Hall Institute of Medical Research, Victoria, Australia.,Department of Medical Biology, University of Melbourne, Parkville 3010, Victoria, Australia
| | - Yifang Hu
- Bioinformatics Division, Walter and Eliza Hall Institute of Medical Research, Victoria, Australia
| | - Kathryn G Roberts
- Department of Pathology, St. Jude Children's Research Hospital, Memphis, TN 38105
| | - Judith M Boer
- Department of Pediatric Oncology, Erasmus MC - Sophia Children's Hospital, 3015 CN Rotterdam, Netherlands
| | - Mark D McKenzie
- Molecular Medicine Division, Walter and Eliza Hall Institute of Medical Research, Victoria, Australia.,Department of Medical Biology, University of Melbourne, Parkville 3010, Victoria, Australia
| | - Grace J Liu
- Australian Centre for Blood Diseases, Monash University, Melbourne, Victoria 3004, Australia.,Molecular Medicine Division, Walter and Eliza Hall Institute of Medical Research, Victoria, Australia.,Department of Medical Biology, University of Melbourne, Parkville 3010, Victoria, Australia
| | - Oliver D Le Grice
- Australian Centre for Blood Diseases, Monash University, Melbourne, Victoria 3004, Australia.,Molecular Medicine Division, Walter and Eliza Hall Institute of Medical Research, Victoria, Australia
| | - Cedric S Tremblay
- Australian Centre for Blood Diseases, Monash University, Melbourne, Victoria 3004, Australia
| | - Margherita Ghisi
- Australian Centre for Blood Diseases, Monash University, Melbourne, Victoria 3004, Australia
| | - Tracy A Willson
- Molecular Medicine Division, Walter and Eliza Hall Institute of Medical Research, Victoria, Australia
| | - Martin A Horstmann
- Research Institute Children's Cancer Center, Department of Pediatric Hematology and Oncology, University Medical Center Hamburg, 20246 Hamburg, Germany
| | - Iannis Aifantis
- Department of Pathology, NYU School of Medicine, New York, NY 10016
| | - Luisa Cimmino
- Department of Pathology, NYU School of Medicine, New York, NY 10016
| | - Seth Frietze
- Department of Medical Laboratory and Radiation Science, University of Vermont, Burlington, VT 05405
| | - Monique L den Boer
- Department of Pediatric Oncology, Erasmus MC - Sophia Children's Hospital, 3015 CN Rotterdam, Netherlands.,Dutch Childhood Oncology Group, 2545 The Hague, Netherlands
| | - Charles G Mullighan
- Department of Pathology, St. Jude Children's Research Hospital, Memphis, TN 38105
| | - Gordon K Smyth
- Bioinformatics Division, Walter and Eliza Hall Institute of Medical Research, Victoria, Australia.,Department of Mathematics and Statistics, University of Melbourne, Parkville 3010, Victoria, Australia
| | - Ross A Dickins
- Australian Centre for Blood Diseases, Monash University, Melbourne, Victoria 3004, Australia .,Molecular Medicine Division, Walter and Eliza Hall Institute of Medical Research, Victoria, Australia.,Department of Medical Biology, University of Melbourne, Parkville 3010, Victoria, Australia
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47
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Targeting High Dynamin-2 (DNM2) Expression by Restoring Ikaros Function in Acute Lymphoblastic Leukemia. Sci Rep 2016; 6:38004. [PMID: 27885263 PMCID: PMC5122860 DOI: 10.1038/srep38004] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2016] [Accepted: 11/02/2016] [Indexed: 11/15/2022] Open
Abstract
Dynamin-2 (DNM2) is a GTPase essential for intracellular vesicle formation and trafficking, cytokinesis and receptor endocytosis. Mutations in DNM2 are common in early T-cell precursor acute lymphoblastic leukemia. However, DNM2 expression in other types of ALL are not reported. We studied DNM2 mRNA level in adults with B- and T-cell ALL. We found DNM2 is more highly expressed compared with normals in both forms of ALL. High DNM2 expression is associated with some clinical and laboratory features, inferior outcomes and with leukaemia cell proliferation. We also found Ikaros directly binds the DNM2 promoter and suppresses DNM2 expression. Consequently IKZF1 deletion is associated with high DNM2 expression. Conversely, casein kinase-2 (CK2)-inhibitor increases Ikaros function thereby inhibiting DNM2 expression. Inhibiting DNM2 suppresses proliferation of leukemia cells and synergizes with CK2 inhibition. Our data indicate high DNM2 expression is associated with Ikaros dysregulation and may be important in the development of B-ALL.
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48
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Abstract
T cell acute lymphoblastic leukaemia (T-ALL) is an aggressive haematological malignancy derived from early T cell progenitors. In recent years genomic and transcriptomic studies have uncovered major oncogenic and tumour suppressor pathways involved in T-ALL transformation and identified distinct biological groups associated with prognosis. An increased understanding of T-ALL biology has already translated into new prognostic biomarkers and improved animal models of leukaemia and has opened opportunities for the development of targeted therapies for the treatment of this disease. In this Review we examine our current understanding of the molecular mechanisms of T-ALL and recent developments in the translation of these results to the clinic.
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Affiliation(s)
- Laura Belver
- Institute for Cancer Genetics, Columbia University Medical Center, New York, New York 10032, USA
| | - Adolfo Ferrando
- Institute for Cancer Genetics, Columbia University Medical Center, New York, New York 10032, USA
- Department of Pathology, Columbia University Medical Center, New York, New York 10032, USA
- Department of Pediatrics, Columbia University Medical Center, New York, New York 10032, USA
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