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Murtadha M, Park M, Zhu Y, Caserta E, Napolitano O, Tandoh T, Moloudizargari M, Pozhitkov A, Singer M, Dona AA, Vahed H, Gonzalez A, Ly K, Ouyang C, Sanchez JF, Nigam L, Duplan A, Chowdhury A, Ghoda L, Li L, Zhang B, Krishnan A, Marcucci G, Williams JC, Pichiorri F. A CD38-directed, single-chain T-cell engager targets leukemia stem cells through IFN-γ-induced CD38 expression. Blood 2024; 143:1599-1615. [PMID: 38394668 PMCID: PMC11103097 DOI: 10.1182/blood.2023021570] [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: 06/20/2023] [Revised: 12/22/2023] [Accepted: 12/25/2023] [Indexed: 02/25/2024] Open
Abstract
ABSTRACT Treatment resistance of leukemia stem cells (LSCs) and suppression of the autologous immune system represent major challenges to achieve a cure in acute myeloid leukemia (AML). Although AML blasts generally retain high levels of surface CD38 (CD38pos), LSCs are frequently enriched in the CD34posCD38neg blast fraction. Here, we report that interferon gamma (IFN-γ) reduces LSCs clonogenic activity and induces CD38 upregulation in both CD38pos and CD38neg LSC-enriched blasts. IFN-γ-induced CD38 upregulation depends on interferon regulatory factor 1 transcriptional activation of the CD38 promoter. To leverage this observation, we created a novel compact, single-chain CD38-CD3 T-cell engager (BN-CD38) designed to promote an effective immunological synapse between CD38pos AML cells and both CD8pos and CD4pos T cells. We demonstrate that BN-CD38 engages autologous CD4pos and CD8pos T cells and CD38pos AML blasts, leading to T-cell activation and expansion and to the elimination of leukemia cells in an autologous setting. Importantly, BN-CD38 engagement induces the release of high levels of IFN-γ, driving the expression of CD38 on CD34posCD38neg LSC-enriched blasts and their subsequent elimination. Critically, although BN-CD38 showed significant in vivo efficacy across multiple disseminated AML cell lines and patient-derived xenograft models, it did not affect normal hematopoietic stem cell clonogenicity and the development of multilineage human immune cells in CD34pos humanized mice. Taken together, this study provides important insights to target and eliminate AML LSCs.
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Affiliation(s)
- Mariam Murtadha
- Department of Hematology and Hematopoietic Cell Transplantation, Judy and Bernard Briskin Center for Multiple Myeloma Research, City of Hope, Duarte, CA
- Department of Hematologic Malignancies Translational Science, Beckman Research Institute, City of Hope, Duarte, CA
| | - Miso Park
- Department of Cancer Biology and Molecular Medicine, Beckman Research Institute, City of Hope, Duarte, CA
| | - Yinghui Zhu
- Department of Hematology and Hematopoietic Cell Transplantation, Judy and Bernard Briskin Center for Multiple Myeloma Research, City of Hope, Duarte, CA
- Department of Hematologic Malignancies Translational Science, Beckman Research Institute, City of Hope, Duarte, CA
- Research Center for Translational Medicine, Shanghai East Hospital, Frontier Science Center for Stem Cell Research, Shanghai Key Laboratory of Signaling and Disease Research, School of Life Sciences and Technology, Tongji University, Shanghai, China
| | - Enrico Caserta
- Department of Hematology and Hematopoietic Cell Transplantation, Judy and Bernard Briskin Center for Multiple Myeloma Research, City of Hope, Duarte, CA
- Department of Hematologic Malignancies Translational Science, Beckman Research Institute, City of Hope, Duarte, CA
| | - Ottavio Napolitano
- Department of Hematology and Hematopoietic Cell Transplantation, Judy and Bernard Briskin Center for Multiple Myeloma Research, City of Hope, Duarte, CA
- Department of Hematologic Malignancies Translational Science, Beckman Research Institute, City of Hope, Duarte, CA
| | - Theophilus Tandoh
- Department of Hematology and Hematopoietic Cell Transplantation, Judy and Bernard Briskin Center for Multiple Myeloma Research, City of Hope, Duarte, CA
- Department of Hematologic Malignancies Translational Science, Beckman Research Institute, City of Hope, Duarte, CA
| | - Milad Moloudizargari
- Department of Hematology and Hematopoietic Cell Transplantation, Judy and Bernard Briskin Center for Multiple Myeloma Research, City of Hope, Duarte, CA
- Department of Hematologic Malignancies Translational Science, Beckman Research Institute, City of Hope, Duarte, CA
| | - Alex Pozhitkov
- Department of Hematology and Hematopoietic Cell Transplantation, Judy and Bernard Briskin Center for Multiple Myeloma Research, City of Hope, Duarte, CA
- Department of Hematologic Malignancies Translational Science, Beckman Research Institute, City of Hope, Duarte, CA
| | - Mahmoud Singer
- Department of Hematology and Hematopoietic Cell Transplantation, Judy and Bernard Briskin Center for Multiple Myeloma Research, City of Hope, Duarte, CA
- Department of Hematologic Malignancies Translational Science, Beckman Research Institute, City of Hope, Duarte, CA
| | - Ada Alice Dona
- Department of Hematology and Hematopoietic Cell Transplantation, Judy and Bernard Briskin Center for Multiple Myeloma Research, City of Hope, Duarte, CA
- Department of Hematologic Malignancies Translational Science, Beckman Research Institute, City of Hope, Duarte, CA
| | - Hawa Vahed
- Department of Hematology and Hematopoietic Cell Transplantation, Judy and Bernard Briskin Center for Multiple Myeloma Research, City of Hope, Duarte, CA
- Department of Hematologic Malignancies Translational Science, Beckman Research Institute, City of Hope, Duarte, CA
| | - Asaul Gonzalez
- Department of Cancer Biology and Molecular Medicine, Beckman Research Institute, City of Hope, Duarte, CA
| | - Kevin Ly
- Department of Cancer Biology and Molecular Medicine, Beckman Research Institute, City of Hope, Duarte, CA
| | - Ching Ouyang
- Integrative Genomics Core, City of Hope Comprehensive Cancer Center, City of Hope, Duarte, CA
| | - James F. Sanchez
- Department of Hematology and Hematopoietic Cell Transplantation, Judy and Bernard Briskin Center for Multiple Myeloma Research, City of Hope, Duarte, CA
| | - Lokesh Nigam
- Department of Hematology and Hematopoietic Cell Transplantation, Judy and Bernard Briskin Center for Multiple Myeloma Research, City of Hope, Duarte, CA
- Department of Hematologic Malignancies Translational Science, Beckman Research Institute, City of Hope, Duarte, CA
| | - Amanda Duplan
- Department of Hematologic Malignancies Translational Science, Beckman Research Institute, City of Hope, Duarte, CA
| | - Arnab Chowdhury
- Department of Hematology and Hematopoietic Cell Transplantation, Judy and Bernard Briskin Center for Multiple Myeloma Research, City of Hope, Duarte, CA
- Department of Computational and Quantitative Medicine, Beckman Research Institute, City of Hope, Duarte, CA
| | - Lucy Ghoda
- Department of Hematologic Malignancies Translational Science, Beckman Research Institute, City of Hope, Duarte, CA
| | - Ling Li
- Department of Hematologic Malignancies Translational Science, Beckman Research Institute, City of Hope, Duarte, CA
| | - Bin Zhang
- Department of Hematologic Malignancies Translational Science, Beckman Research Institute, City of Hope, Duarte, CA
| | - Amrita Krishnan
- Department of Hematology and Hematopoietic Cell Transplantation, Judy and Bernard Briskin Center for Multiple Myeloma Research, City of Hope, Duarte, CA
| | - Guido Marcucci
- Department of Hematologic Malignancies Translational Science, Beckman Research Institute, City of Hope, Duarte, CA
| | - John C. Williams
- Department of Cancer Biology and Molecular Medicine, Beckman Research Institute, City of Hope, Duarte, CA
| | - Flavia Pichiorri
- Department of Hematology and Hematopoietic Cell Transplantation, Judy and Bernard Briskin Center for Multiple Myeloma Research, City of Hope, Duarte, CA
- Department of Hematologic Malignancies Translational Science, Beckman Research Institute, City of Hope, Duarte, CA
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2
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Bakhtiyari M, Liaghat M, Aziziyan F, Shapourian H, Yahyazadeh S, Alipour M, Shahveh S, Maleki-Sheikhabadi F, Halimi H, Forghaniesfidvajani R, Zalpoor H, Nabi-Afjadi M, Pornour M. The role of bone marrow microenvironment (BMM) cells in acute myeloid leukemia (AML) progression: immune checkpoints, metabolic checkpoints, and signaling pathways. Cell Commun Signal 2023; 21:252. [PMID: 37735675 PMCID: PMC10512514 DOI: 10.1186/s12964-023-01282-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2023] [Accepted: 08/17/2023] [Indexed: 09/23/2023] Open
Abstract
Acute myeloid leukemia (AML) comprises a multifarious and heterogeneous array of illnesses characterized by the anomalous proliferation of myeloid cells in the bone marrow microenvironment (BMM). The BMM plays a pivotal role in promoting AML progression, angiogenesis, and metastasis. The immune checkpoints (ICs) and metabolic processes are the key players in this process. In this review, we delineate the metabolic and immune checkpoint characteristics of the AML BMM, with a focus on the roles of BMM cells e.g. tumor-associated macrophages, natural killer cells, dendritic cells, metabolic profiles and related signaling pathways. We also discuss the signaling pathways stimulated in AML cells by BMM factors that lead to AML progression. We then delve into the roles of immune checkpoints in AML angiogenesis, metastasis, and cell proliferation, including co-stimulatory and inhibitory ICs. Lastly, we discuss the potential therapeutic approaches and future directions for AML treatment, emphasizing the potential of targeting metabolic and immune checkpoints in AML BMM as prognostic and therapeutic targets. In conclusion, the modulation of these processes through the use of directed drugs opens up new promising avenues in combating AML. Thereby, a comprehensive elucidation of the significance of these AML BMM cells' metabolic and immune checkpoints and signaling pathways on leukemic cells can be undertaken in the future investigations. Additionally, these checkpoints and cells should be considered plausible multi-targeted therapies for AML in combination with other conventional treatments in AML. Video Abstract.
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Affiliation(s)
- Maryam Bakhtiyari
- Department of Medical Laboratory Sciences, Faculty of Allied Medicine, Qazvin University of Medical Sciences, Qazvin, Iran
- Network of Immunity in Infection, Malignancy & Autoimmunity (NIIMA), Universal Scientific Education & Research Network (USERN), Tehran, Iran
| | - Mahsa Liaghat
- Network of Immunity in Infection, Malignancy & Autoimmunity (NIIMA), Universal Scientific Education & Research Network (USERN), Tehran, Iran
- Department of Medical Laboratory Sciences, Faculty of Medical Sciences, Kazerun Branch, Islamic Azad University, Kazerun, Iran
| | - Fatemeh Aziziyan
- Network of Immunity in Infection, Malignancy & Autoimmunity (NIIMA), Universal Scientific Education & Research Network (USERN), Tehran, Iran
- Department of Biochemistry, Faculty of Biological Sciences, Tarbiat Modares University, Tehran, Iran
| | - Hooriyeh Shapourian
- Department of Immunology, Faculty of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Sheida Yahyazadeh
- Department of Immunology, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Maedeh Alipour
- Cellular and Molecular Biology Research Center, Health Research Institute, Babol University of Medical Sciences, Babol, Iran
| | - Shaghayegh Shahveh
- American Association of Naturopath Physician (AANP), Washington, DC, USA
| | - Fahimeh Maleki-Sheikhabadi
- Department of Hematology and Blood Banking, School of Paramedical Sciences, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Hossein Halimi
- Department of Immunology, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Razieh Forghaniesfidvajani
- Network of Immunity in Infection, Malignancy & Autoimmunity (NIIMA), Universal Scientific Education & Research Network (USERN), Tehran, Iran
| | - Hamidreza Zalpoor
- Network of Immunity in Infection, Malignancy & Autoimmunity (NIIMA), Universal Scientific Education & Research Network (USERN), Tehran, Iran.
- Shiraz Neuroscience Research Center, Shiraz University of Medical Sciences, Shiraz, Iran.
| | - Mohsen Nabi-Afjadi
- Department of Biochemistry, Faculty of Biological Sciences, Tarbiat Modares University, Tehran, Iran.
| | - Majid Pornour
- Department of Biochemistry and Molecular Biology, University of Maryland, Baltimore, MD, USA.
- Marlene and Stewart Greenebaum Comprehensive Cancer Center, Baltimore, Maryland, USA.
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3
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Li C, Wang M, Shi Y, Xin H. SOSTDC1 acts as a tumor inhibitor in acute myeloid leukemia by downregulating the Wnt/β-catenin pathway. ENVIRONMENTAL TOXICOLOGY 2022; 37:1934-1943. [PMID: 35442555 DOI: 10.1002/tox.23540] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2021] [Revised: 03/31/2022] [Accepted: 04/10/2022] [Indexed: 06/14/2023]
Abstract
Sclerostin domain-containing 1 (SOSTDC1) has been documented as a key tumor-associated protein that is differentially expressed in multiple malignancies. However, the function of SOSTDC1 in acute myeloid leukemia (AML) is unexplored. The goal of this work was to assess the possible role of SOSTDC1 in AML. Our data showed decreased SOSTDC1 level in bone marrow from AML patients, and patients with low levels of SOSTDC1 had a reduced survival rate. SOSTC1 upregulation restrained the proliferative ability and promoted the apoptotic rate of AML cells. SOSTDC1 suppressed the activation of the Wnt/β-catenin pathway in AML cells. Reactivation of the Wnt/β-catenin pathway reversed SOSTDC1-mediated antitumor effects. SOSTDC1 upregulation weakened the tumorigenicity of AML cells in vivo. Collectively, our work demonstrates that SOSTDC1 has a tumor-inhibiting role in AML via downregulation of the Wnt/β-catenin pathway. This work underscores a key function for the SOSTDC1/Wnt/β-catenin pathway in AML.
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Affiliation(s)
- Chengliang Li
- Department of Hematology, The First Affiliated Hospital of Xi'an Medical University, Xi'an, China
| | - Minjuan Wang
- Department of General Practice, The First Affiliated Hospital of Xi'an Medical University, Xi'an, China
| | - Yingpeng Shi
- Department of General Practice, The First Affiliated Hospital of Xi'an Medical University, Xi'an, China
| | - Hong Xin
- Department of Cardiovasology, The First Affiliated Hospital of Xi'an Medical University, Xi'an, China
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4
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Rodrigues ACBDC, Costa RGA, Silva SLR, Dias IRSB, Dias RB, Bezerra DP. Cell signaling pathways as molecular targets to eliminate AML stem cells. Crit Rev Oncol Hematol 2021; 160:103277. [PMID: 33716201 DOI: 10.1016/j.critrevonc.2021.103277] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 01/25/2021] [Accepted: 02/27/2021] [Indexed: 02/08/2023] Open
Abstract
Acute myeloid leukemia (AML) remains the most lethal of leukemias and a small population of cells called leukemic stem cells (LSCs) has been associated with disease relapses. Some cell signaling pathways play an important role in AML survival, proliferation and self-renewal properties and are abnormally activated or suppressed in LSCs. This includes the NF-κB, Wnt/β-catenin, Hedgehog, Notch, EGFR, JAK/STAT, PI3K/AKT/mTOR, TGF/SMAD and PPAR pathways. This review aimed to discuss these pathways as molecular targets for eliminating AML LSCs. Herein, inhibitors/activators of these pathways were summarized as a potential new anti-AML therapy capable of eliminating LSCs to guide future researches. The clinical use of cell signaling pathways data can be useful to enhance the anti-AML therapy.
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Affiliation(s)
| | - Rafaela G A Costa
- Gonçalo Moniz Institute, Oswaldo Cruz Foundation (IGM-FIOCRUZ/BA), Salvador, Bahia, 40296-710, Brazil
| | - Suellen L R Silva
- Gonçalo Moniz Institute, Oswaldo Cruz Foundation (IGM-FIOCRUZ/BA), Salvador, Bahia, 40296-710, Brazil
| | - Ingrid R S B Dias
- Gonçalo Moniz Institute, Oswaldo Cruz Foundation (IGM-FIOCRUZ/BA), Salvador, Bahia, 40296-710, Brazil
| | - Rosane B Dias
- Gonçalo Moniz Institute, Oswaldo Cruz Foundation (IGM-FIOCRUZ/BA), Salvador, Bahia, 40296-710, Brazil
| | - Daniel P Bezerra
- Gonçalo Moniz Institute, Oswaldo Cruz Foundation (IGM-FIOCRUZ/BA), Salvador, Bahia, 40296-710, Brazil.
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5
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Cardona-Echeverry A, Prada-Arismendy J. Deciphering the role of Wnt signaling in acute myeloid leukemia prognosis: how alterations in DNA methylation come into play in patients' prognosis. J Cancer Res Clin Oncol 2020; 146:3097-3109. [PMID: 32980885 DOI: 10.1007/s00432-020-03407-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2019] [Accepted: 09/21/2020] [Indexed: 10/23/2022]
Abstract
Acute myeloid leukemia (AML) is a malignant clonal disorder affecting myeloid differentiation through mechanisms that include epigenetic dysregulation. Abnormal changes in DNA methylation and gene expression profiles of pathways involved in hematopoietic development, such as Wnt/β-catenin, contribute to the transformation, development, and maintenance of leukemic cells. This review summarizes the alterations of Wnt signaling-related genes at the epigenetic and transcriptional level and their implications for AML prognosis. Among the implications of epigenetic alterations in AML, methylation of Wnt antagonists is related to poor prognosis, whereas their upregulation has been associated with a better clinical outcome. Furthermore, Wnt target genes c-Myc and LEF-1 present distinct implications. LEF-1 expression positively influences the patient overall survival. c-Myc upregulation has been associated with treatment resistance in AML, although c-Myc expression is not exclusively dependent of Wnt signaling. Understanding the signaling abnormalities could help us to further understand leukemogenesis, improve the current risk stratification for AML patients, and even serve to propose novel therapeutic targets.
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Affiliation(s)
- Andrés Cardona-Echeverry
- Grupo de Investigación e innovación Biomédica-GI2B, Facultad de Ciencias Exactas y Aplicadas, Instituto Tecnológico Metropolitano-ITM, 050034, Medellín, Colombia
| | - Jeanette Prada-Arismendy
- Grupo de Investigación e innovación Biomédica-GI2B, Facultad de Ciencias Exactas y Aplicadas, Instituto Tecnológico Metropolitano-ITM, 050034, Medellín, Colombia.
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6
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Takam Kamga P, Dal Collo G, Cassaro A, Bazzoni R, Delfino P, Adamo A, Bonato A, Carbone C, Tanasi I, Bonifacio M, Krampera M. Small Molecule Inhibitors of Microenvironmental Wnt/β-Catenin Signaling Enhance the Chemosensitivity of Acute Myeloid Leukemia. Cancers (Basel) 2020; 12:cancers12092696. [PMID: 32967262 PMCID: PMC7565567 DOI: 10.3390/cancers12092696] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2020] [Accepted: 09/17/2020] [Indexed: 01/03/2023] Open
Abstract
Wnt/β-catenin signaling has been reported in Acute Myeloid leukemia, but little is known about its significance as a prognostic biomarker and drug target. In this study, we first evaluated the correlation between expression levels of Wnt molecules and clinical outcome. Then, we studied-in vitro and in vivo-the anti-leukemic value of combinatorial treatment between Wnt inhibitors and classic anti-leukemia drugs. Higher levels of β-catenin, Ser675-phospho-β-catenin and GSK-3α (total and Ser 9) were found in AML cells from intermediate or poor risk patients; nevertheless, patients presenting high activity of Wnt/β-catenin displayed shorter progression-free survival (PFS) according to univariate analysis. In vitro, many pharmacological inhibitors of Wnt signalling, i.e., LRP6 (Niclosamide), GSK-3 (LiCl, AR-A014418), and TCF/LEF (PNU-74654) but not Porcupine (IWP-2), significantly reduced proliferation and improved the drug sensitivity of AML cells cultured alone or in the presence of bone marrow stromal cells. In vivo, PNU-74654, Niclosamide and LiCl administration significantly reduced the bone marrow leukemic burden acting synergistically with Ara-C, thus improving mouse survival. Overall, our study demonstrates the antileukemic role of Wnt/β-catenin inhibition that may represent a potential new therapeutics strategy in AML.
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Affiliation(s)
- Paul Takam Kamga
- Section of Hematology, Stem Cell Research Laboratory, Department of Medicine, University of Verona, 37134 Verona, Italy; (P.T.K.); (G.D.C.); (R.B.); (A.A.); (A.B.); (I.T.); (M.B.)
- EA4340-BCOH, Biomarker in Cancerology and Onco-Haematology, Université de Versailles-Saint-Quentin-En-Yvelines, Université Paris Saclay, 92100 Boulogne-Billancourt, France
| | - Giada Dal Collo
- Section of Hematology, Stem Cell Research Laboratory, Department of Medicine, University of Verona, 37134 Verona, Italy; (P.T.K.); (G.D.C.); (R.B.); (A.A.); (A.B.); (I.T.); (M.B.)
- Department of Immunology, Erasmus University Medical Center, Doctor Molenwaterplein 40, 3015 GD Rotterdam, The Netherlands
| | - Adriana Cassaro
- Department of Oncology, Hematology Unit, Niguarda Hospital, 20162 Milan, Italy;
- Department of Health Sciences, University of Milan, 20146 Milan, Italy
| | - Riccardo Bazzoni
- Section of Hematology, Stem Cell Research Laboratory, Department of Medicine, University of Verona, 37134 Verona, Italy; (P.T.K.); (G.D.C.); (R.B.); (A.A.); (A.B.); (I.T.); (M.B.)
| | - Pietro Delfino
- Department of Diagnostics and Public Health, University and Hospital Trust of Verona, 37134 Verona, Italy;
| | - Annalisa Adamo
- Section of Hematology, Stem Cell Research Laboratory, Department of Medicine, University of Verona, 37134 Verona, Italy; (P.T.K.); (G.D.C.); (R.B.); (A.A.); (A.B.); (I.T.); (M.B.)
| | - Alice Bonato
- Section of Hematology, Stem Cell Research Laboratory, Department of Medicine, University of Verona, 37134 Verona, Italy; (P.T.K.); (G.D.C.); (R.B.); (A.A.); (A.B.); (I.T.); (M.B.)
| | - Carmine Carbone
- Fondazione Policlinico Universitario Gemelli, IRCCS, 00168 Roma, Italy;
| | - Ilaria Tanasi
- Section of Hematology, Stem Cell Research Laboratory, Department of Medicine, University of Verona, 37134 Verona, Italy; (P.T.K.); (G.D.C.); (R.B.); (A.A.); (A.B.); (I.T.); (M.B.)
| | - Massimiliano Bonifacio
- Section of Hematology, Stem Cell Research Laboratory, Department of Medicine, University of Verona, 37134 Verona, Italy; (P.T.K.); (G.D.C.); (R.B.); (A.A.); (A.B.); (I.T.); (M.B.)
| | - Mauro Krampera
- Section of Hematology, Stem Cell Research Laboratory, Department of Medicine, University of Verona, 37134 Verona, Italy; (P.T.K.); (G.D.C.); (R.B.); (A.A.); (A.B.); (I.T.); (M.B.)
- Correspondence: ; Tel.: +45-045-812-4420; Fax: +45-045-802-7488
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Guo S, Li B, Xu X, Wang W, Wang S, Lv T, Wang H. Construction of a 14-lncRNA risk score system predicting survival of children with acute myelocytic leukemia. Exp Ther Med 2020; 20:1521-1531. [PMID: 32742384 PMCID: PMC7388210 DOI: 10.3892/etm.2020.8846] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2019] [Accepted: 12/30/2019] [Indexed: 12/13/2022] Open
Abstract
Acute myelocytic leukemia (AML) is a frequent type of acute leukemia. The present study was performed to build a risk score system for the prognostic prediction of AML. AML RNA-sequencing data from samples from 111 children were downloaded from The Cancer Genome Atlas database. Using the DEseq and edgeR packages, the differentially expressed long non-coding RNAs (DE-lncRNAs) between bad and good prognosis groups were identified. A survival package was used to screen prognosis-associated lncRNAs and clinical factors. The optimal lncRNA combination was selected using the penalized package, and the risk-score system was built and evaluated. After the lncRNA-mRNA expression correlation network was constructed, the potential pathways involving the key lncRNAs were enriched using Gene Set Enrichment Analysis. Among the 61 DE-lncRNAs, 48 lncRNAs were significantly associated with prognosis. Relapse was an independent prognostic factor. The optimal 14-lncRNA risk score system was constructed. After 730 differentially expressed mRNAs were identified between the good and bad prognosis groups divided using a prognostic index, the lncRNA-mRNA expression correlation network was constructed. Enrichment analysis showed that semaphorin-3C [SEMA3C; regulated by probable leucine-tRNA ligase, mitochondrial (LARS2-AS1)] and secreted frizzled-related protein 5 [SFRP5; mediated by WASH complex subunit 5 (WASHC5)-antisense RNA 1 (AS1)] were involved in axon guidance and the Wnt signaling pathway, respectively. A 14-lncRNA (including paired box protein Pax8-AS1 and MYB AS1) risk-score system might be effective in predicting the prognosis of AML. Axon guidance (involving SEMA3C and LARS2-AS1) and the Wnt signaling pathway (involving SFRP5 and WASHC5-AS1) might be two important pathways affecting the prognosis of AML.
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Affiliation(s)
- Shuli Guo
- Department of Hematology, Luoyang Central Hospital Affiliated to Zhengzhou University, Luoyang, Henan 471009, P.R. China
| | - Bo Li
- Department of Hematology, Luoyang Central Hospital Affiliated to Zhengzhou University, Luoyang, Henan 471009, P.R. China
| | - Xiaoyan Xu
- Department of Hematology, Luoyang Central Hospital Affiliated to Zhengzhou University, Luoyang, Henan 471009, P.R. China
| | - Wanli Wang
- Department of Hematology, Luoyang Central Hospital Affiliated to Zhengzhou University, Luoyang, Henan 471009, P.R. China
| | - Songyun Wang
- Department of Hematology, Luoyang Central Hospital Affiliated to Zhengzhou University, Luoyang, Henan 471009, P.R. China
| | - Tao Lv
- Department of Hematology, Luoyang Central Hospital Affiliated to Zhengzhou University, Luoyang, Henan 471009, P.R. China
| | - Huirui Wang
- Department of Hematology, Luoyang Central Hospital Affiliated to Zhengzhou University, Luoyang, Henan 471009, P.R. China
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8
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Li C, Xin H, Shi Y, Mu J. Knockdown of TRIM24 suppresses growth and induces apoptosis in acute myeloid leukemia through downregulation of Wnt/GSK-3β/β-catenin signaling. Hum Exp Toxicol 2020; 39:1725-1736. [PMID: 32672070 DOI: 10.1177/0960327120938845] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Tripartite motif-containing protein 24 (TRIM24) has currently emerged as a crucial cancer-related gene present in a wide range of human cancer types. However, the involvement of TRIM24 in acute myeloid leukemia (AML) has not been well investigated. The present study aims to investigate the significance, cellular function, and potential regulatory mechanism of TRIM24 in AML. We found that TRIM24 expression was significantly upregulated in AML compared with normal tissues. AML patients with low expression of TRIM24 had higher survival rates than those expressing TRIM24 at higher levels. High expression of TRIM24 was also detected in AML cells and its knockdown markedly restricted proliferation and promoted apoptosis in AML cells. Further investigation revealed that TRIM24 contributed to the regulation of Wnt/β-catenin signaling, which was associated with modulating the phosphorylation status of glycogen synthase kinase-3β (GSK-3β). Inactivation of GSK-3β partially reversed the TRIM24 knockdown-mediated antitumor effects observed in AML cells. Furthermore, knockdown of TRIM24 retarded the growth of AML-derived xenograft tumors in nude mice in vivo. Overall, these findings demonstrate that knockdown of TRIM24 impedes the AML tumor growth through the modulation of Wnt/GSK-3β/β-catenin signaling. These findings highlight the potential TRIM24 as an attractive anticancer target to treat AML.
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Affiliation(s)
- C Li
- Department of General Practice, 162798The First Affiliated Hospital of Xi'an Medical University, Xi'an, China.,Department of Cardiology, 162798The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - H Xin
- Department of Cardiology, 162798The First Affiliated Hospital of Xi'an Medical University, Xi'an, China
| | - Y Shi
- Department of General Practice, 162798The First Affiliated Hospital of Xi'an Medical University, Xi'an, China
| | - J Mu
- Department of Cardiology, 162798The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
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9
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Liu Y, Wang W, Li Y, Huang Y. SOX30 confers a tumor suppressive effect in acute myeloid leukemia through inactivation of Wnt/β-catenin signaling. Mol Cell Probes 2020; 52:101578. [PMID: 32334007 DOI: 10.1016/j.mcp.2020.101578] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2020] [Revised: 04/16/2020] [Accepted: 04/16/2020] [Indexed: 12/28/2022]
Abstract
Recent studies suggested SRY-related high mobility group box 30 (SOX30) as a candidate tumor-promoter or tumor-inhibitor in multiple tumor types. Yet, the detailed role of SOX30 in acute myeloid leukemia (AML) has not been well studied. The present research was designed to investigate the detailed relevance of SOX30 in AML. The data of our study indicated that SOX30 expression was markedly downregulated in AML cells, a pattern associated with its hypermethylation. SOX30 overexpression caused a marked reduction in AML cell proliferation and colony formation, but it promoted AML cell apoptosis. By contrast, SOX30 depletion by small interfering RNA (siRNA)-mediated gene silencing had the opposite effect. Moreover, SOX30 overexpression markedly decreased β-catenin expression, a change that led to inactivation of Wnt/β-catenin pathway. Notably, restoration of β-catenin expression partially reversed SOX30-mediated tumor suppressive effect in AML cells. In an AML-derived mouse xenograft model, SOX30 overexpression remarkably retarded the tumor growth in vivo. Overall, these data of the study suggest a tumor-inhibition role of SOX30 in AML, and highlight a key role of SOX30/Wnt/β-catenin axis in the progression of AML.
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Affiliation(s)
- Ye Liu
- Department of Oncology & Hematology, Ninth Hospital of Xi'an Affiliated to Xi 'an Jiaotong University, Xi'an, 710054, Shaanxi Province, China
| | - Wei Wang
- Department of Oncology & Hematology, Ninth Hospital of Xi'an Affiliated to Xi 'an Jiaotong University, Xi'an, 710054, Shaanxi Province, China
| | - Yuan Li
- Department of Oncology & Hematology, Ninth Hospital of Xi'an Affiliated to Xi 'an Jiaotong University, Xi'an, 710054, Shaanxi Province, China
| | - Yao Huang
- Department of Oncology & Hematology, Ninth Hospital of Xi'an Affiliated to Xi 'an Jiaotong University, Xi'an, 710054, Shaanxi Province, China.
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10
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Wang H, Gong Y, Liang L, Xiao L, Yi H, Ye M, Roy M, Xia J, Zhou W, Yang C, Shen X, Zhang B, Li Z, Liu J, Zhou H, Xiao X. Lycorine targets multiple myeloma stem cell-like cells by inhibition of Wnt/β-catenin pathway. Br J Haematol 2020; 189:1151-1164. [PMID: 32167591 DOI: 10.1111/bjh.16477] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2019] [Accepted: 12/16/2019] [Indexed: 12/12/2022]
Abstract
Multiple myeloma (MM) is characterised by the proliferation and accumulation of malignant plasma cells in the bone marrow. Despite the progress in treatment over the last few years, MM remains incurable and the majority of patients relapse. MM stem-like cells (MMSCs) have been considered as the main reason for drug resistance and eventual relapse. Currently, therapeutic agents are not enough to eradicate MMSCs, and finding effective strategies to eradicate MMSCs may improve the outcome of patients. Here we showed that lycorine, a natural compound from the Amaryllidaceae species, effectively inhibits the proliferation of myeloma cells from cell lines or patients, mainly through decreasing ALDH1+ cells. Mechanistically, lycorine decreases the MMSC population through inhibition of the Wnt/β-catenin pathway by reducing the β-catenin protein level. Moreover, lycorine could overcome the increasing proportion of ALDH1+ cells caused by bortezomib (BTZ) treatment, and a combination BTZ and lycorine have a synergistic effect on anti-myeloma cells. Furthermore, we found a similar reduction of MMSC characteristics by lycorine in BTZ-resistant MM cells and primary CD138+ plasma cells. Collectively, our findings indicate lycorine as a promising agent to target MMSCs to overcome the drug resistance of BTZ, and that, alone or in combination with BTZ, lycorine is a potential therapeutic strategy for MM treatments.
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Affiliation(s)
- Haiqin Wang
- Molecular Biology Research Center & Hunan Province Key Laboratory of Basic and Applied Hematology, School of Life Sciences, Central South University, Changsha, China
| | - Yanfei Gong
- Molecular Biology Research Center & Hunan Province Key Laboratory of Basic and Applied Hematology, School of Life Sciences, Central South University, Changsha, China
| | - Long Liang
- Molecular Biology Research Center & Hunan Province Key Laboratory of Basic and Applied Hematology, School of Life Sciences, Central South University, Changsha, China.,Hematology Department, Xiangya Hospital, Central South University, Changsha, China
| | - Ling Xiao
- Department of Histology and Embryology of School of Basic Medical Sciences, Central South University, Changsha, China
| | - Hui Yi
- Molecular Biology Research Center & Hunan Province Key Laboratory of Basic and Applied Hematology, School of Life Sciences, Central South University, Changsha, China
| | - Mao Ye
- Molecular Science and Biomedicine Laboratory, State Key Laboratory for Chemo/Biosensing and Chemometrics, College of Biology, College of Chemistry and Chemical Engineering, Hunan University, Changsha, China
| | - Mridul Roy
- Molecular Biology Research Center & Hunan Province Key Laboratory of Basic and Applied Hematology, School of Life Sciences, Central South University, Changsha, China.,Molecular Science and Biomedicine Laboratory, State Key Laboratory for Chemo/Biosensing and Chemometrics, College of Biology, College of Chemistry and Chemical Engineering, Hunan University, Changsha, China
| | - Jiliang Xia
- Cancer Research Institute, School of Basic Medical Science, Central South University, Changsha, China
| | - Wen Zhou
- Cancer Research Institute, School of Basic Medical Science, Central South University, Changsha, China
| | - Chaoying Yang
- Molecular Biology Research Center & Hunan Province Key Laboratory of Basic and Applied Hematology, School of Life Sciences, Central South University, Changsha, China
| | - Xiaokai Shen
- Xiangya Medical School, Central South University, Changsha, China
| | - Boxin Zhang
- Xiangya Medical School, Central South University, Changsha, China
| | - Zhenzhen Li
- Molecular Biology Research Center & Hunan Province Key Laboratory of Basic and Applied Hematology, School of Life Sciences, Central South University, Changsha, China
| | - Jing Liu
- Molecular Biology Research Center & Hunan Province Key Laboratory of Basic and Applied Hematology, School of Life Sciences, Central South University, Changsha, China
| | - Hui Zhou
- Lymphoma & Hematology Department, the Affiliated Tumor Hospital of Xiangya Medical School of Central South University, Changsha, China
| | - Xiaojuan Xiao
- Molecular Biology Research Center & Hunan Province Key Laboratory of Basic and Applied Hematology, School of Life Sciences, Central South University, Changsha, China
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11
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Lu PCW, Shahbaz S, Winn LM. Benzene and its effects on cell signaling pathways related to hematopoiesis and leukemia. J Appl Toxicol 2020; 40:1018-1032. [PMID: 32112456 DOI: 10.1002/jat.3961] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2020] [Revised: 01/30/2020] [Accepted: 02/09/2020] [Indexed: 12/14/2022]
Abstract
Benzene is an environmental toxicant found in many consumer products. It is an established human carcinogen and is known to cause acute myeloid leukemia in adults. Epidemiological evidence has since shown that benzene can cross the placenta and affect the fetal liver. Animal studies have shown that in utero exposure to benzene can increase tumor incidence in offspring. Although there have been risk factors established for acute myeloid leukemia, they still do not account for many of the cases. Clearly then, current efforts to elucidate the mechanism by which benzene exerts its carcinogenic properties have been superficial. Owing to the critical role of cell signaling pathways in the development of an organism and its various organ systems, it seems plausible to suspect that these pathways may have a role in leukemogenesis. This review article assesses current evidence of the effects of benzene on critical hematopoietic signaling pathways. Pathways discussed included Hedgehog, Notch/Delta, Wingless/Integrated, nuclear factor-kappaB and others. Following a review of the literature, it seems that current evidence about the effects of benzene on these critical signaling pathways remains limited. Given the important role of these pathways in hematopoiesis, more attention should be given to them.
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Affiliation(s)
- Peter C W Lu
- Department of Biomedical & Molecular Sciences, Queen's University, Kingston, Ontario, Canada
| | - Sara Shahbaz
- Department of Biomedical & Molecular Sciences, Queen's University, Kingston, Ontario, Canada
| | - Louise M Winn
- Department of Biomedical & Molecular Sciences, Queen's University, Kingston, Ontario, Canada.,School of Environmental Sciences, Queen's University, Kingston, Ontario, Canada
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12
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Xiao H, Cheng Q, Wu X, Tang Y, Liu J, Li X. ADAR1 may be involved in the proliferation of acute myeloid leukemia cells via regulation of the Wnt pathway. Cancer Manag Res 2019; 11:8547-8555. [PMID: 31572009 PMCID: PMC6759212 DOI: 10.2147/cmar.s210504] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2019] [Accepted: 08/12/2019] [Indexed: 01/01/2023] Open
Abstract
Purpose Acute myeloid leukemia (AML) is the most common type of leukemia and characterized by the malignant growth of leukemic cells. Adenosine deaminases acting on RNA 1 (ADAR1) have been shown to participate in the proliferation of cancer cells and progression of various cancers. However, the role of ADAR1 in AML has not been investigated. Patients and methods We compared the expression levels of ADAR1 between samples obtained from different AML patients and controls using quantitative-polymerase chain reaction and Western blotting. We also investigated the functional role and possible mechanisms via silencing the expression of ADAR1 in vitro and in vivo. Results We found that the mRNA and protein levels of ADAR1 were significantly higher in AML patients. The mRNA expression of ADAR1 was positively correlated with the ratio of leukemic cells. Additionally, silencing of ADAR1 expression significantly suppressed the proliferation of AML cells and induced G0/1 arrest. For the analysis of the mechanism, the quantitative-polymerase chain reaction and Western blotting results revealed that ADAR1 knockdown resulted in the decreased expression of Wingless-Int (Wnt) effectors including β-catenin, c-Myc, transcription factor 4, and cyclin D2. In the nude mouse model, inhibition of ADAR1 expression reduced the tumorigenic potential and decreased the expression o]f Wnt effectors. Conclusion These results demonstrate that ADAR1 may be involved in the regulation of the proliferation of AML cells partially via regulation of the Wnt signaling pathway.
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Affiliation(s)
- Han Xiao
- Department of Hematology, The Third Xiangya Hospital, Central South University, Changsha, Hunan, People's Republic of China
| | - Qian Cheng
- Department of Hematology, The Third Xiangya Hospital, Central South University, Changsha, Hunan, People's Republic of China
| | - Xinyu Wu
- Department of Hematology, The Third Xiangya Hospital, Central South University, Changsha, Hunan, People's Republic of China
| | - Yishu Tang
- Department of Hematology, The Third Xiangya Hospital, Central South University, Changsha, Hunan, People's Republic of China
| | - Jing Liu
- Department of Hematology, The Third Xiangya Hospital, Central South University, Changsha, Hunan, People's Republic of China
| | - Xin Li
- Department of Hematology, The Third Xiangya Hospital, Central South University, Changsha, Hunan, People's Republic of China
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13
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Almars A, Chondrou PS, Onyido EK, Almozyan S, Seedhouse C, Babaei-Jadidi R, Nateri AS. Increased FLYWCH1 Expression is Negatively Correlated with Wnt/β-catenin Target Gene Expression in Acute Myeloid Leukemia Cells. Int J Mol Sci 2019; 20:ijms20112739. [PMID: 31167387 PMCID: PMC6600431 DOI: 10.3390/ijms20112739] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2019] [Revised: 05/30/2019] [Accepted: 06/02/2019] [Indexed: 02/06/2023] Open
Abstract
Acute myeloid leukaemia (AML) is a heterogeneous clonal malignancy of hematopoietic progenitor cells. The Wnt pathway and its downstream targets are tightly regulated by β-catenin. We recently discovered a new protein, FLYWCH1, which can directly bind nuclear β-catenin. Herein, we studied the FLYWCH1/β-catenin pathway in AML cells using qRT-PCR, Western blot, and immunofluorescence assays. In addition, the stemness activity and cell cycle were analysed by the colony-forming unit (CFU) using methylcellulose-based and Propidium iodide/flow cytometry assays. We found that FLYWCH1 mRNA and protein were differentially expressed in the AML cell lines. C-Myc, cyclin D1, and c-Jun expression decreased in the presence of higher FLYWCH1 expression, and vice versa. There appeared to be the loss of FLYWCH1 expression in dividing cells. The sub-G0 phase was prolonged and shortened in the low and high FLYWCH1 expression cell lines, respectively. The G0/G1 arrest correlated with FLYWCH1-expression, and these cell lines also formed colonies, whereas the low FLYWCH1 expression cell lines could not. Thus, FLYWCH1 functions as a negative regulator of the Wnt/β-catenin pathway in AML.
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Affiliation(s)
- Amany Almars
- Cancer Genetics & Stem Cell Group, Cancer Biology, Division of Cancer and Stem Cells, School of Medicine, University of Nottingham, Nottingham NG7 2UH, UK.
| | - Panagiota S Chondrou
- Cancer Genetics & Stem Cell Group, Cancer Biology, Division of Cancer and Stem Cells, School of Medicine, University of Nottingham, Nottingham NG7 2UH, UK.
| | - Emenike K Onyido
- Cancer Genetics & Stem Cell Group, Cancer Biology, Division of Cancer and Stem Cells, School of Medicine, University of Nottingham, Nottingham NG7 2UH, UK.
| | - Sheema Almozyan
- Cancer Genetics & Stem Cell Group, Cancer Biology, Division of Cancer and Stem Cells, School of Medicine, University of Nottingham, Nottingham NG7 2UH, UK.
| | - Claire Seedhouse
- Haematology, Nottingham City Hospital, Division of Cancer and Stem Cells, School of Medicine, University of Nottingham, Nottingham NG5 1PB, UK.
| | - Roya Babaei-Jadidi
- Cancer Genetics & Stem Cell Group, Cancer Biology, Division of Cancer and Stem Cells, School of Medicine, University of Nottingham, Nottingham NG7 2UH, UK.
- Respiratory Medicine, School of Medicine, University of Nottingham, Nottingham NG7 2UH, UK.
| | - Abdolrahman S Nateri
- Cancer Genetics & Stem Cell Group, Cancer Biology, Division of Cancer and Stem Cells, School of Medicine, University of Nottingham, Nottingham NG7 2UH, UK.
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14
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Azevedo PL, Oliveira NCA, Corrêa S, Castelo-Branco MTL, Abdelhay E, Binato R. Canonical WNT Signaling Pathway is Altered in Mesenchymal Stromal Cells From Acute Myeloid Leukemia Patients And Is Implicated in BMP4 Down-Regulation. Transl Oncol 2019; 12:614-625. [PMID: 30703678 PMCID: PMC6350721 DOI: 10.1016/j.tranon.2019.01.003] [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: 12/22/2018] [Revised: 01/02/2019] [Accepted: 01/02/2019] [Indexed: 12/16/2022] Open
Abstract
Mesenchymal stromal cells (hMSCs) are key components of the bone marrow microenvironment (BMM). A molecular signature in hMSCs from Acute myeloid leukemia patients (hMSC-AML) has been proposed where BMP4 is decreased and could be regulated by WNT signaling pathway. Therefore, the aim of this work was to verify whether the WNT signaling pathway can regulate the BMP4 gene in hMSCs. The results showed differentially expressed genes in the WNT canonical pathway between hMSC-AML and hMSCs from healthy donors and a real-time quantitative assay corroborated with these findings. Moreover, the main WNT canonical pathway regulators were decreased in hMSC-AML, such as LEF-1, β-catenin and the β-catenin/TCF-LEF regulatory complex in the nucleus. This result, together with functional assays, suggests that the induction of BMP4 expression by the WNT signaling pathway is decreased in hMSC-AML. Overall, the WNT canonical pathway is able to regulate the BMP4 gene in hMSC-AML and its reduced activation could also lead to the lower expression of BMP4 in hMSC-AML. Due to the important role of the BMM, changes in BMP4 expression through the WNT canonical pathway may be a potential mechanism of leukemogenesis.
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Affiliation(s)
- Pedro L Azevedo
- Stem Cell Laboratory, Bone Marrow Transplantation Unit, National Cancer Institute (INCA), Rio de Janeiro, RJ, Brazil
| | - Nathalia C A Oliveira
- Stem Cell Laboratory, Bone Marrow Transplantation Unit, National Cancer Institute (INCA), Rio de Janeiro, RJ, Brazil
| | - Stephany Corrêa
- Stem Cell Laboratory, Bone Marrow Transplantation Unit, National Cancer Institute (INCA), Rio de Janeiro, RJ, Brazil
| | - Morgana T L Castelo-Branco
- Institute of Biomedical Sciences and Clementino Fraga Filho University Hospital, Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro, RJ, Brazil
| | - Eliana Abdelhay
- Stem Cell Laboratory, Bone Marrow Transplantation Unit, National Cancer Institute (INCA), Rio de Janeiro, RJ, Brazil
| | - Renata Binato
- Stem Cell Laboratory, Bone Marrow Transplantation Unit, National Cancer Institute (INCA), Rio de Janeiro, RJ, Brazil.
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15
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Østgård LSG, Nørgaard M, Pedersen L, Østgård R, Friis LS, Schöllkopf C, Severinsen MT, Marcher CW, Medeiros BC, Jensen MK. NSAID consumption and risk of acute myeloid leukemia: a national population-based case-control study. Cancer Manag Res 2018; 10:5043-5051. [PMID: 30464604 PMCID: PMC6214335 DOI: 10.2147/cmar.s165498] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Background Most cases of acute leukemia arise without identifiable risk factors. Studies investigating the impact of autoimmune diseases and infections on leukemogenesis have revealed conflicting results. If inflammation increases the risk of acute myeloid leukemia (AML), nonsteroidal anti-inflammatory drug (NSAID) use may decrease the risk of leukemia. Methods We conducted a case-control study of 3,053 patients with AML diagnosed between 2000 and 2013, who were registered in the Danish National Acute Leukemia Registry, and 30,530 population controls matched on sex and age. We identified prescriptions through the Danish National Health Service Prescription Database. We used conditional logistic regression analysis to compute ORs associating AML with NSAID use overall, in patients with inflammatory diseases, and for specific AML subtypes (de novo AML, AML related to previous hematological disease, ie, secondary AML [sAML], or therapy-related AML [tAML; exposed to previous cytotoxic therapy]). Results Overall, NSAID use was not associated with a lower risk of AML (OR 1.1, 95% CI=1.0-1.2), de novo AML (OR 1.0, 95% CI=0.9-1.1), and sAML/tAML (OR 1.3, 95% CI=1.1-1.5). In addition, in patients with known inflammatory diseases, NSAIDs did not affect AML risk (OR 0.9, 95% CI=0.5-1.6). Number of prescriptions, type of NSAID, age, or sex did not influence the results. Conclusion In line with our recent findings that showed no association between autoimmune diseases and infections and de novo AML, NSAID use was not found to reduce the risk of AML.
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Affiliation(s)
- Lene Sofie Granfeldt Østgård
- Department of Hematology, Aarhus University Hospital, Aarhus, Denmark, .,Department of Clinical Epidemiology, Aarhus University Hospital, Aarhus, Denmark, .,Department of Medicine, Holstebro Regional Hospital, Holstebro, Denmark,
| | - Mette Nørgaard
- Department of Clinical Epidemiology, Aarhus University Hospital, Aarhus, Denmark,
| | - Lars Pedersen
- Department of Clinical Epidemiology, Aarhus University Hospital, Aarhus, Denmark,
| | - René Østgård
- Diagnostic Center, Silkeborg Regional Hospital, Silkeborg, Denmark
| | - Lone Smidstrup Friis
- Department of Hematology, The University Hospital Rigshospitalet, Copenhagen, Denmark
| | | | - Marianne Tang Severinsen
- Department of Hematology, Aalborg University Hospital, Aalborg, Denmark.,Department of Clinical Medicine, Aalborg University, Aalborg, Denmark
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16
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Chong PSY, Zhou J, Chooi JY, Chan ZL, Toh SHM, Tan TZ, Wee S, Gunaratne J, Zeng Q, Chng WJ. Non-canonical activation of β-catenin by PRL-3 phosphatase in acute myeloid leukemia. Oncogene 2018; 38:1508-1519. [DOI: 10.1038/s41388-018-0526-3] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2018] [Revised: 09/13/2018] [Accepted: 09/17/2018] [Indexed: 11/09/2022]
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17
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Xin H, Li C, Wang M. DIXDC1 promotes the growth of acute myeloid leukemia cells by upregulating the Wnt/β-catenin signaling pathway. Biomed Pharmacother 2018; 107:1548-1555. [PMID: 30257373 DOI: 10.1016/j.biopha.2018.08.144] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2018] [Revised: 08/17/2018] [Accepted: 08/28/2018] [Indexed: 10/28/2022] Open
Abstract
Accumulating evidence suggests that dysregulation of Dishevelled-Axin domain-containing 1 (DIXDC1) is involved in the progression and development of various cancers. However, little is known about the relevance of DIXDC1 in acute myeloid leukemia (AML). In this study, we aimed to investigate the expression status and potential biological function of DIXDC1 in AML. Our results showed that DIXDC1 expression was highly upregulated in AML cell lines and primary AML blasts compared with normal blasts. Knockdown of DIXDC1 by siRNA-mediated gene silencing significantly inhibited proliferation, induced cell cycle arrest, and promoted apoptosis of AML cells in vitro. By contrast, DIXDC1 overexpression promoted proliferation, accelerated cell cycle progression, and reduced apoptosis of AML cells. Moreover, we found that DIXDC1 knockdown decreased the expression of β-catenin and restricted the activation of Wnt signaling. In addition, DIXDC1 knockdown decreased the expression of Wnt/β-catenin target genes, including cyclin D1 and c-myc, while DIXDC1 overexpression had the opposite effect. Notably, β-catenin knockdown partially reversed the oncogenic effect of DIXDC1 in AML cells. Taken together, these results demonstrate that DIXDC1 promotes the growth of AML cells, possibly through upregulating the Wnt/β-catenin signaling pathway. Our study suggests that DIXDC1 may serve as a potential therapeutic target for the treatment of AML.
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Affiliation(s)
- Hong Xin
- Department of Cardiovasology, The First Affiliated Hospital of Xi'an Medical University, No. 48 Fenghao West Road, Xi'an, 710077, China
| | - Chengliang Li
- Department of Hematology, The First Affiliated Hospital of Xi'an Medical University, Xi'an, 710077, China.
| | - Minjuan Wang
- Department of General Practice and Geriatrics, The First Affiliated Hospital of Xi'an Medical University, Xi'an, 710077, China
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18
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Liu X, Klein PS. Glycogen synthase kinase-3 and alternative splicing. WILEY INTERDISCIPLINARY REVIEWS-RNA 2018; 9:e1501. [PMID: 30118183 DOI: 10.1002/wrna.1501] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2018] [Revised: 07/03/2018] [Accepted: 07/09/2018] [Indexed: 12/16/2022]
Abstract
Glycogen synthase kinase-3 (GSK-3) is a highly conserved negative regulator of receptor tyrosine kinase, cytokine, and Wnt signaling pathways. Stimulation of these pathways inhibits GSK-3 to modulate diverse downstream effectors that include transcription factors, nutrient sensors, glycogen synthesis, mitochondrial function, circadian rhythm, and cell fate. GSK-3 also regulates alternative splicing in response to T-cell receptor activation, and recent phosphoproteomic studies have revealed that multiple splicing factors and regulators of RNA biosynthesis are phosphorylated in a GSK-3-dependent manner. Furthermore, inhibition of GSK-3 alters the splicing of hundreds of mRNAs, indicating a broad role for GSK-3 in the regulation of RNA processing. GSK-3-regulated phosphoproteins include SF3B1, SRSF2, PSF, RBM8A, nucleophosmin 1 (NPM1), and PHF6, many of which are mutated in leukemia and myelodysplasia. As GSK-3 is inhibited by pathways that are pathologically activated in leukemia and loss of Gsk3 in hematopoietic cells causes a severe myelodysplastic neoplasm in mice, these findings strongly implicate GSK-3 as a critical regulator of mRNA processing in normal and malignant hematopoiesis. This article is categorized under: RNA Processing > Splicing Mechanisms RNA Processing > Splicing Regulation/Alternative Splicing RNA in Disease and Development > RNA in Disease RNA Interactions with Proteins and Other Molecules > Protein-RNA Interactions: Functional Implications.
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Affiliation(s)
- Xiaolei Liu
- Division of Hematology-Oncology, Department of Medicine, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania
| | - Peter S Klein
- Division of Hematology-Oncology, Department of Medicine, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania
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19
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Tsui YM, Sze KMF, Tung EKK, Ho DWH, Lee TKW, Ng IOL. Dishevelled-3 phosphorylation is governed by HIPK2/PP1Cα/ITCH axis and the non-phosphorylated form promotes cancer stemness via LGR5 in hepatocellular carcinoma. Oncotarget 2018; 8:39430-39442. [PMID: 28455968 PMCID: PMC5503623 DOI: 10.18632/oncotarget.17049] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2016] [Accepted: 03/20/2017] [Indexed: 12/23/2022] Open
Abstract
Dishevelled-3 (Dvl3) is regarded as a binding hub with many different interacting partners. However, its regulation and mechanism on cancer stemness remain to be explored. In this study, we showed that Dvl3 was significantly overexpressed in human hepatocellular carcinomas (HCCs) and promoted cancer stemness both in vitro and in vivo. We found that the non-phosphorylated (NP)-Dvl3 was more stable than the phosphorylated form, more active in activating β-catenin transcriptional activity, and more potent in enhancing self-renewal ability in HCC cells. Mechanistically, we confirmed that the homeodomain-interacting protein kinase-2 (HIPK2) and E3 ubiquitin ligase ITCH were able to physically bind to Dvl3 protein. Knockdown of HIPK2 and the protein phosphatase regulatory unit C-alpha (PP1Cα) resulted in sustained Dvl3 phosphorylation and hence decrease in the NP form of Dvl3. On the other hand, knockdown of E3 ubiquitin ligase ITCH reduced the phosphorylation-induced degradation and stabilized the phosphorylated Dvl3 protein. Furthermore, the NP-Dvl3 enhanced the LGR5 promoter activity to upregulate LGR5 expression, which was associated with increased cancer stemness in HCC. Our findings established that HIPK2/PP1Cα/ITCH axis sustains the de-phosphorylation of Dvl3. This post-translational modification of Dvl3 in turn maintains LGR5 expression and enhances the cancer stemness properties in HCC.
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Affiliation(s)
- Yu-Man Tsui
- State Key Laboratory for Liver Research, The University of Hong Kong, Hong Kong.,Department of Pathology, The University of Hong Kong, Hong Kong
| | - Karen Man-Fong Sze
- State Key Laboratory for Liver Research, The University of Hong Kong, Hong Kong.,Department of Pathology, The University of Hong Kong, Hong Kong
| | - Edmund Kwok-Kwan Tung
- State Key Laboratory for Liver Research, The University of Hong Kong, Hong Kong.,Department of Pathology, The University of Hong Kong, Hong Kong
| | - Daniel Wai-Hung Ho
- State Key Laboratory for Liver Research, The University of Hong Kong, Hong Kong.,Department of Pathology, The University of Hong Kong, Hong Kong
| | - Terence Kin-Wah Lee
- State Key Laboratory for Liver Research, The University of Hong Kong, Hong Kong.,Department of Pathology, The University of Hong Kong, Hong Kong.,Present address: Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hong Kong
| | - Irene Oi-Lin Ng
- State Key Laboratory for Liver Research, The University of Hong Kong, Hong Kong.,Department of Pathology, The University of Hong Kong, Hong Kong
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20
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Yang X, Yan T, Gong Y, Liu X, Sun H, Xu W, Wang C, Naren D, Zheng Y. High CFTR expression in Philadelphia chromosome-positive acute leukemia protects and maintains continuous activation of BCR-ABL and related signaling pathways in combination with PP2A. Oncotarget 2018; 8:24437-24448. [PMID: 28445932 PMCID: PMC5421860 DOI: 10.18632/oncotarget.15510] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2016] [Accepted: 02/06/2017] [Indexed: 02/05/2023] Open
Abstract
Cystic fibrosis transmembrane conductance regulator (CFTR) is classified as an anion channel transporter of Cl- and HCO3-. Through interactions with its PDZ domain, CFTR is capable of regulating other proteins, such as protein phosphatase 2A (PP2A). The aberrant expression and mutation of CFTR have been observed in several tumor, but not in philadelphia chromosome-positive(Ph+) acute leukemia, including Ph+ B cell acute lymphoblastic leukemia(Ph+ B-ALL) and chronic myelogenous leukemia blast crisis phases (CML-BC). In this study, we demonstrated the mean expression level of CFTR in Ph+ acute leukemia cells was markedly higher than that in Ph- B-ALL and CML-chronic phase cells. CFTRinh-172, a classic CFTR inhibitor, down-regulated the expression of CFTR, p-BCR-ABL and classical Wnt/β-catenin signaling in Ph+ acute leukemia cells, while imatinib had no effect on CFTR. Importantly, reduced efficacy of CFTRinh-172 was closely associated with elevated PP2A phosphatase activity. Furthermore, we confirmed an interaction between CFTR and the PP2AA subunit in K562 cells. In addition, we demonstrated CFTR and PP2AA interact in the cytosol, resulting in PP2A complex inactivation and increased degradation of PP2A substrates via the lysosomal/proteasome pathway. In conclusion, our results showed CFTR was highly expressed in Ph+ acute leukemia, which protected and maintained the continuous activation of BCR-ABL and the canonical Wnt/β-catenin signaling pathway by decreasing PP2A phosphatase activity. According to this working model of the CFTR-PP2A-BCR-ABL axis, targeting the CFTR protein will activate PP2A and may offer a new treatment strategy for Ph+ acute leukemia, especially for patients exhibiting high levels of CFTR expression.
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Affiliation(s)
- Xi Yang
- Department of Hematology, West China Hospital, Sichuan University, Chengdu, China
| | - Tianyou Yan
- Department of Hematology, West China Hospital, Sichuan University, Chengdu, China
| | - Yuping Gong
- Department of Hematology, West China Hospital, Sichuan University, Chengdu, China
| | - Xuehua Liu
- Department of Hematology, West China Hospital, Sichuan University, Chengdu, China
| | - Huaqin Sun
- Sichuan University-The Chinese University of Hong Kong Joint Laboratory for Reproductive Medicine, West China Second University Hospital, Chengdu, China
| | - Wenming Xu
- Sichuan University-The Chinese University of Hong Kong Joint Laboratory for Reproductive Medicine, West China Second University Hospital, Chengdu, China
| | - Chunsen Wang
- Department of Hematology, Sichuan Provincial People's Hospital, Affiliated Hospital of University of Electronic Science and Technology of China, Chengdu, China
| | - Duolan Naren
- Department of Hematology, West China Hospital, Sichuan University, Chengdu, China
| | - Yuhuan Zheng
- Department of Hematology, West China Hospital, Sichuan University, Chengdu, China
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21
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Barbieri E, Deflorian G, Pezzimenti F, Valli D, Saia M, Meani N, Gruszka AM, Alcalay M. Nucleophosmin leukemogenic mutant activates Wnt signaling during zebrafish development. Oncotarget 2018; 7:55302-55312. [PMID: 27486814 PMCID: PMC5342418 DOI: 10.18632/oncotarget.10878] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2015] [Accepted: 06/26/2016] [Indexed: 01/08/2023] Open
Abstract
Nucleophosmin (NPM1) is a ubiquitous multifunctional phosphoprotein with both oncogenic and tumor suppressor functions. Mutations of the NPM1 gene are the most frequent genetic alterations in acute myeloid leukemia (AML) and result in the expression of a mutant protein with aberrant cytoplasmic localization, NPMc+. Although NPMc+ causes myeloproliferation and AML in animal models, its mechanism of action remains largely unknown. Here we report that NPMc+ activates canonical Wnt signaling during the early phases of zebrafish development and determines a Wnt-dependent increase in the number of progenitor cells during primitive hematopoiesis. Coherently, the canonical Wnt pathway is active in AML blasts bearing NPMc+ and depletion of the mutant protein in the patient derived OCI-AML3 cell line leads to a decrease in the levels of active β-catenin and of Wnt target genes. Our results reveal a novel function of NPMc+ and provide insight into the molecular pathogenesis of AML bearing NPM1 mutations.
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Affiliation(s)
- Elisa Barbieri
- Department of Experimental Oncology, Istituto Europeo di Oncologia, Milan, Italy.,Current address: Gene Expression and Regulation Program, The Wistar Institute, Philadelphia, PA, USA
| | - Gianluca Deflorian
- The FIRC Institute of Molecular Oncology (IFOM) Foundation, Milan, Italy
| | | | - Debora Valli
- Department of Experimental Oncology, Istituto Europeo di Oncologia, Milan, Italy
| | - Marco Saia
- Department of Experimental Oncology, Istituto Europeo di Oncologia, Milan, Italy
| | - Natalia Meani
- Department of Experimental Oncology, Istituto Europeo di Oncologia, Milan, Italy
| | - Alicja M Gruszka
- Department of Experimental Oncology, Istituto Europeo di Oncologia, Milan, Italy
| | - Myriam Alcalay
- Department of Experimental Oncology, Istituto Europeo di Oncologia, Milan, Italy.,Dipartimento di Oncologia ed Emato-Oncologia, Università degli Studi di Milano, Milan, Italy
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22
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The anti-apoptotic PON2 protein is Wnt/β-catenin-regulated and correlates with radiotherapy resistance in OSCC patients. Oncotarget 2018; 7:51082-51095. [PMID: 27322774 PMCID: PMC5239460 DOI: 10.18632/oncotarget.9013] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2016] [Accepted: 04/07/2016] [Indexed: 12/12/2022] Open
Abstract
Aberrant Wnt signaling and control of anti-apoptotic mechanisms are pivotal features in different types of cancer to undergo cell death programs. The intracellular human enzyme Paraoxonase-2 (PON2) is known to have anti-apoptotic properties in leukemia and oral squamous cell cancer (OSCC) cells. However, the distinct regulating pathways are poorly understood. First, we present a so far unknown regulation of PON2 protein expression through the Wnt/GSK3β/β-catenin pathway in leukemia and OSCC cells. This was confirmed via in silico analysis, promoter reporter studies and treatment of multiple cell lines (K562, SCC-4, PCI-13) with different Wnt ligands/inhibitors in vitro. Ex vivo analysis of OSCC patients revealed a correlation between PON2 and β-catenin expression in tumor tissue. Higher PON2 expression in OSCC is associated with relapse independently of treatment (e.g. surgery/radio-/chemotherapy). These results emphasize the clinical impact of the newly described regulation of PON2 through Wnt/GSK3β/β-catenin. More importantly, the study revealed the fundamental finding of an overall Wnt/GSK3β/β-catenin dependent regulation of PON2 in different cancers, which was confirmed by systematic and multimethodological approaches. Thus, the herein presented mechanistic insight contributes to a better understanding of tumor specific escape from cell death strategies and suggests PON2 as a new potential biomarker for therapy resistance or as a prognostic tumor marker.
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23
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Grey W, Ivey A, Milne TA, Haferlach T, Grimwade D, Uhlmann F, Voisset E, Yu V. The Cks1/Cks2 axis fine-tunes Mll1 expression and is crucial for MLL-rearranged leukaemia cell viability. BIOCHIMICA ET BIOPHYSICA ACTA. MOLECULAR CELL RESEARCH 2018; 1865:105-116. [PMID: 28939057 PMCID: PMC5701546 DOI: 10.1016/j.bbamcr.2017.09.009] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/12/2017] [Revised: 09/09/2017] [Accepted: 09/17/2017] [Indexed: 12/25/2022]
Abstract
The Cdc28 protein kinase subunits, Cks1 and Cks2, play dual roles in Cdk-substrate specificity and Cdk-independent protein degradation, in concert with the E3 ubiquitin ligase complexes SCFSkp2 and APCCdc20. Notable targets controlled by Cks include p27 and Cyclin A. Here, we demonstrate that Cks1 and Cks2 proteins interact with both the MllN and MllC subunits of Mll1 (Mixed-lineage leukaemia 1), and together, the Cks proteins define Mll1 levels throughout the cell cycle. Overexpression of CKS1B and CKS2 is observed in multiple human cancers, including various MLL-rearranged (MLLr) AML subtypes. To explore the importance of MLL-Fusion Protein regulation by CKS1/2, we used small molecule inhibitors (MLN4924 and C1) to modulate their protein degradation functions. These inhibitors specifically reduced the proliferation of MLLr cell lines compared to primary controls. Altogether, this study uncovers a novel regulatory pathway for MLL1, which may open a new therapeutic approach to MLLr leukaemia.
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Affiliation(s)
- William Grey
- Department of Medical and Molecular Genetics, King's College London, Faculty of Life Sciences and Medicine, London, UK.
| | - Adam Ivey
- Department of Medical and Molecular Genetics, King's College London, Faculty of Life Sciences and Medicine, London, UK
| | - Thomas A Milne
- MRC Molecular Haematology Unit, Weatherall Institute of Molecular Medicine, NIHR Oxford Biomedical Research Centre Programme, University of Oxford, UK
| | | | - David Grimwade
- Department of Medical and Molecular Genetics, King's College London, Faculty of Life Sciences and Medicine, London, UK
| | - Frank Uhlmann
- Chromosome Segregation Laboratory, The Francis Crick Institute, London, UK
| | - Edwige Voisset
- Department of Medical and Molecular Genetics, King's College London, Faculty of Life Sciences and Medicine, London, UK.
| | - Veronica Yu
- Department of Medical and Molecular Genetics, King's College London, Faculty of Life Sciences and Medicine, London, UK
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24
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Zaky W, Manton C, Miller CP, Khatua S, Gopalakrishnan V, Chandra J. The ubiquitin-proteasome pathway in adult and pediatric brain tumors: biological insights and therapeutic opportunities. Cancer Metastasis Rev 2017; 36:617-633. [PMID: 29071526 DOI: 10.1007/s10555-017-9700-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Nearly 20 years ago, the concept of targeting the proteasome for cancer therapy began gaining momentum. This concept was driven by increased understanding of the biology/structure and function of the 26S proteasome, insight into the role of the proteasome in transformed cells, and the synthesis of pharmacological inhibitors with clinically favorable features. Subsequent in vitro, in vivo, and clinical testing culminated in the FDA approval of three proteasome inhibitors-bortezomib, carfilzomib, and ixazomib -for specific hematological malignancies. However, despite in vitro and in vivo studies pointing towards efficacy in solid tumors, clinical responses broadly have been evasive. For brain tumors, a malignancy in dire need of new approaches both in adult and pediatric patients, this has also been the case. Elucidation of proteasome-dependent processes in specific types of brain tumors, the evolution of newer proteasome targeting strategies, and the use of proteasome inhibitors in combination strategies will clarify how these agents can be leveraged more effectively to treat central nervous system malignancies. Since brain tumors represent a heterogeneous subset of solid tumors, and in particular, pediatric brain tumors possess distinct biology from adult brain tumors, tailoring of proteasome inhibitor-based strategies to specific subtypes of these tumors will be critical for advancing care for affected patients, and will be discussed in this review.
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Affiliation(s)
- Wafik Zaky
- Children's Cancer Hospital, Division of Pediatrics, University of Texas MD Anderson Cancer Center, 1515 Holcombe Blvd, Houston, TX, 77030, USA
| | - Christa Manton
- Children's Cancer Hospital, Division of Pediatrics, University of Texas MD Anderson Cancer Center, 1515 Holcombe Blvd, Houston, TX, 77030, USA
| | - Claudia P Miller
- Children's Cancer Hospital, Division of Pediatrics, University of Texas MD Anderson Cancer Center, 1515 Holcombe Blvd, Houston, TX, 77030, USA
| | - Soumen Khatua
- Children's Cancer Hospital, Division of Pediatrics, University of Texas MD Anderson Cancer Center, 1515 Holcombe Blvd, Houston, TX, 77030, USA
| | - Vidya Gopalakrishnan
- Children's Cancer Hospital, Division of Pediatrics, University of Texas MD Anderson Cancer Center, 1515 Holcombe Blvd, Houston, TX, 77030, USA
| | - Joya Chandra
- Children's Cancer Hospital, Division of Pediatrics, University of Texas MD Anderson Cancer Center, 1515 Holcombe Blvd, Houston, TX, 77030, USA.
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25
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Gruszka AM, Valli D, Alcalay M. Understanding the molecular basis of acute myeloid leukemias: where are we now? Int J Hematol Oncol 2017; 6:43-53. [PMID: 30302223 DOI: 10.2217/ijh-2017-0002] [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: 02/08/2017] [Accepted: 03/29/2017] [Indexed: 12/26/2022] Open
Abstract
Although the treatment modalities for acute myeloid leukemia (AML) have not changed much over the past 40 years, distinct progress has been made in deciphering the basic biology underlying the pathogenesis of this group of hematological disorders. Studies show that AML development is a multicause, multistep and multipathway process. Accordingly, AMLs constitute a heterogeneous group of diseases. The thorough understanding of the molecular basis of AML is paving the way for better therapeutic approaches. Multiple novel drugs are being introduced and new, more efficient and less toxic formulations of conventional therapeutics are becoming available. Here, we review the recent advances in the comprehension of the molecular processes that lead to the onset of AML and its translation into clinical practice.
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Affiliation(s)
- Alicja M Gruszka
- Department of Experimental Oncology, Istituto Europeo di Oncologia, Via Adamello 16, 20139 Milano, Italy.,Department of Experimental Oncology, Istituto Europeo di Oncologia, Via Adamello 16, 20139 Milano, Italy
| | - Debora Valli
- Department of Experimental Oncology, Istituto Europeo di Oncologia, Via Adamello 16, 20139 Milano, Italy.,Department of Experimental Oncology, Istituto Europeo di Oncologia, Via Adamello 16, 20139 Milano, Italy
| | - Myriam Alcalay
- Department of Experimental Oncology, Istituto Europeo di Oncologia, Via Adamello 16, 20139 Milano, Italy.,Department of Oncology & Hemato-Oncology, University of Milan, Via Festa del Perdono 7, 20122 Milano, Italy.,Department of Experimental Oncology, Istituto Europeo di Oncologia, Via Adamello 16, 20139 Milano, Italy.,Department of Oncology & Hemato-Oncology, University of Milan, Via Festa del Perdono 7, 20122 Milano, Italy
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26
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Zhu K, Jiang B, Yang Y, Hu R, Liu Z. DACT1 overexpression inhibits proliferation, enhances apoptosis, and increases daunorubicin chemosensitivity in KG-1α cells. Tumour Biol 2017; 39:1010428317711089. [PMID: 29037126 DOI: 10.1177/1010428317711089] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
DACT1 has been shown to participate in the development of many types of tumors; however, its role and precise molecular mechanisms in leukemia are unclear. In this study, we investigated the effect of DACT1 on KG-1α leukemia cells to further understand the mechanisms of DACT1-mediated tumor suppression. We transfected a DACT1 expression plasmid to upregulate DACT1 in KG-1α cells and analyzed the resulting phenotypic changes. The results demonstrated that DACT1 overexpression inhibited KG-1α proliferation, increased apoptosis, and arrested cells in the G0/G1 phase. Mechanistically, DACT1 overexpression inhibited Wnt/β-catenin signaling by reducing nuclear β-catenin levels in KG-1α cells. Furthermore, the viability of KG-1α cells transfected with DACT1 was significantly reduced when treated with daunorubicin. We also found that DACT1 reduced P-glycoprotein expression in KG-1α cells. These findings revealed an inhibitory role for DACT1 in leukemogenesis and provided evidence that DACT1 is an attractive target for the development of novel anti-leukemia therapies.
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Affiliation(s)
- Ke Zhu
- 1 Department of Hematology, Shengjing Hospital of China Medical University, Shenyang, China
| | - Benchun Jiang
- 2 Department of General Surgery, Shengjing Hospital of China Medical University, Shenyang, China
| | - Ying Yang
- 1 Department of Hematology, Shengjing Hospital of China Medical University, Shenyang, China
| | - Rong Hu
- 1 Department of Hematology, Shengjing Hospital of China Medical University, Shenyang, China
| | - Zhuogang Liu
- 1 Department of Hematology, Shengjing Hospital of China Medical University, Shenyang, China
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27
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β-Catenin Inhibitor BC2059 Is Efficacious as Monotherapy or in Combination with Proteasome Inhibitor Bortezomib in Multiple Myeloma. Mol Cancer Ther 2017; 16:1765-1778. [DOI: 10.1158/1535-7163.mct-16-0624] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2016] [Revised: 01/24/2017] [Accepted: 05/03/2017] [Indexed: 11/16/2022]
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28
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Khalili S, Rasaee MJ, Bamdad T. 3D structure of DKK1 indicates its involvement in both canonical and non-canonical Wnt pathways. Mol Biol 2017. [DOI: 10.1134/s0026893317010095] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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29
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Kostroma II, Gritsaev SV, Sidorova ZY, Tiranova SA, Svitina SP, Drizhun YS, Chubukina ZV, Martynkevich IS, Kapustin SI, Bessmeltsev SS. [Aberrant methylation of the promoter regions of the SOX7 and p15INK4b genes and Wnt signaling pathway antagonists in patients with acute myeloid leukemias]. TERAPEVT ARKH 2017; 88:31-36. [PMID: 27459612 DOI: 10.17116/terarkh201688731-36] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
AIM to investigate the methylation status of the SOX7 and p15NK4b genes and Wnt signaling pathway antagonists in patients with acute myeloid leukemia (AML) in order to assess the association of the rate of aberrant methylation (AM) with the morphological variant and pattern of chromosomal aberrations, as well as the impact of the methylation status on survival. SUBJECTS AND METHODS The data of 57 AML patients aged 20 to 79 years were analyzed. The methylation status of the genes was studied by methylation-specific polymerase chain reaction. RESULTS The signs of the AM of ≥1 gene were detected in 52 (91.2%) of the 57 patients. The most common finding was AM of simultaneously 2 or 3 genes: in 29.8 and 21.1% of the patients, respectively. Concurrent methylation of 3-5 genes proved to be a more frequent finding in AML patients with myelodysplasia: in 7 (70%) of 10 patients. The proportion of patients with methylation of 5 genes was considerably higher in a group of patients with a complex karyotype: 50% versus 8.3% among other patients (odds ratio: 11.0; 95% confidence interval 2.0 to 61.6; p=0.01). There were no differences in the median overall and relapse-free survival rates in patients with a normal karyotype and without FLT3 and NPM mutations, who received induction therapy, in relation to the number of genes with AM. CONCLUSION AM of the p15NK4b and SOX7 genes and Wnt signaling pathway antagonists is detected in the majority of patients with AML, which allows hypomethylating agents to be recommended for the treatment of patients who cannot use intensive cytostatic therapy for different reasons. The detection of a large number of genes with the aberrant methylation status in most AML patients with myelodysplasia or a complex karyotype serves as the basis for initiating trials to evaluate the efficiency of a combination of 5-azacytidine and cytostatics.
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Affiliation(s)
- I I Kostroma
- Russian Research Institute of Hematology and Transfusiology, Federal Biomedical Agency of Russia, Moscow, Russia
| | - S V Gritsaev
- Russian Research Institute of Hematology and Transfusiology, Federal Biomedical Agency of Russia, Moscow, Russia
| | - Zh Yu Sidorova
- Russian Research Institute of Hematology and Transfusiology, Federal Biomedical Agency of Russia, Moscow, Russia
| | - S A Tiranova
- Russian Research Institute of Hematology and Transfusiology, Federal Biomedical Agency of Russia, Moscow, Russia
| | - S P Svitina
- Russian Research Institute of Hematology and Transfusiology, Federal Biomedical Agency of Russia, Moscow, Russia
| | - Yu S Drizhun
- Russian Research Institute of Hematology and Transfusiology, Federal Biomedical Agency of Russia, Moscow, Russia
| | - Zh V Chubukina
- Russian Research Institute of Hematology and Transfusiology, Federal Biomedical Agency of Russia, Moscow, Russia
| | - I S Martynkevich
- Russian Research Institute of Hematology and Transfusiology, Federal Biomedical Agency of Russia, Moscow, Russia
| | - S I Kapustin
- Russian Research Institute of Hematology and Transfusiology, Federal Biomedical Agency of Russia, Moscow, Russia
| | - S S Bessmeltsev
- Russian Research Institute of Hematology and Transfusiology, Federal Biomedical Agency of Russia, Moscow, Russia
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30
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Lazzaroni F, Del Giacco L, Biasci D, Turrini M, Prosperi L, Brusamolino R, Cairoli R, Beghini A. Intronless WNT10B-short variant underlies new recurrent allele-specific rearrangement in acute myeloid leukaemia. Sci Rep 2016; 6:37201. [PMID: 27853307 PMCID: PMC5112549 DOI: 10.1038/srep37201] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2016] [Accepted: 10/26/2016] [Indexed: 12/12/2022] Open
Abstract
Defects in the control of Wnt signaling have emerged as a recurrent mechanism involved in cancer pathogenesis and acute myeloid leukaemia (AML), including the hematopoietic regeneration-associated WNT10B in AC133bright leukaemia cells, although the existence of a specific mechanism remains unproven. We have obtained evidences for a recurrent rearrangement, which involved the WNT10B locus (WNT10BR) within intron 1 (IVS1) and flanked at the 5' by non-human sequences whose origin remains to be elucidated; it also expressed a transcript variant (WNT10BIVS1) which was mainly detected in a cohort of patients with intermediate/unfavorable risk AML. We also identified in two separate cases, affected by AML and breast cancer respectively, a genomic transposable short form of human WNT10B (ht-WNT10B). The intronless ht-WNT10B resembles a long non-coding RNA (lncRNA), which suggests its involvement in a non-random microhomology-mediated recombination generating the rearranged WNT10BR. Furthermore, our studies supports an autocrine activation primed by the formation of WNT10B-FZD4/5 complexes in the breast cancer MCF7 cells that express the WNT10BIVS1. Chemical interference of WNT-ligands production by the porcupine inhibitor IWP-2 achieved a dose-dependent suppression of the WNT10B-FZD4/5 interactions. These results present the first evidence for a recurrent rearrangement promoted by a mobile ht-WNT10B oncogene, as a relevant mechanism for Wnt involvement in human cancer.
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Affiliation(s)
| | - Luca Del Giacco
- Department of Biosciences, University of Milan, Milan, Italy
| | - Daniele Biasci
- Cambridge Institute for Medical Research, University of Cambridge, Cambridge, UK
| | - Mauro Turrini
- Department of Internal Medicine, Valduce Hospital, Como, Italy
| | - Laura Prosperi
- Department of Biosciences, University of Milan, Milan, Italy
| | | | - Roberto Cairoli
- Department of Oncology, Hematology Unit, Niguarda Hospital, Milan, Italy
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31
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Role of the bone morphogenic protein pathway in developmental haemopoiesis and leukaemogenesis. Biochem Soc Trans 2016; 44:1455-1463. [DOI: 10.1042/bst20160104] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2016] [Revised: 06/23/2016] [Accepted: 06/27/2016] [Indexed: 11/17/2022]
Abstract
Myeloid leukaemias share the common characteristics of being stem cell-derived clonal diseases, characterised by excessive proliferation of one or more myeloid lineage. Chronic myeloid leukaemia (CML) arises from a genetic alteration in a normal haemopoietic stem cell (HSC) giving rise to a leukaemic stem cell (LSC) within the bone marrow (BM) ‘niche’. CML is characterised by the presence of the oncogenic tyrosine kinase fusion protein breakpoint cluster region-abelson murine leukaemia viral oncogene homolog 1 (BCR-ABL), which is responsible for driving the disease through activation of downstream signal transduction pathways. Recent evidence from our group and others indicates that important regulatory networks involved in establishing primitive and definitive haemopoiesis during development are reactivated in myeloid leukaemia, giving rise to an LSC population with altered self-renewal and differentiation properties. In this review, we explore the role the bone morphogenic protein (BMP) signalling plays in stem cell pluripotency, developmental haemopoiesis, HSC maintenance and the implication of altered BMP signalling on LSC persistence in the BM niche. Overall, we emphasise how the BMP and Wnt pathways converge to alter the Cdx–Hox axis and the implications of this in the pathogenesis of myeloid malignancies.
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32
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Laranjeira ABA, Yang SX. Therapeutic target discovery and drug development in cancer stem cells for leukemia and lymphoma: from bench to the clinic. Expert Opin Drug Discov 2016; 11:1071-1080. [PMID: 27626707 DOI: 10.1080/17460441.2016.1236785] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
INTRODUCTION Cancer stem cells (CSCs), also known as tumor initialing cells, have self-renewal capacity and are believed to play an important role in residual disease or tumor relapse. CSCs exhibit characteristic slow growth rate and are resistant to conventional chemotherapy/radiotherapy in experimental models. The type of cells commonly employs aberrant activity of the embryonic signal transduction pathways - Notch, Hedgehog (Hh), and Wnt - for uncontrolled proliferation and survival. Areas covered: The following article discusses key genetic and molecular alterations in Notch, Hh and Wnt pathways and drugs targeting the alterations for the treatment of leukemia and lymphoma. Expert opinion: Early signs of signal agent activity have been observed in certain types of leukemia and lymphoma with experimental therapeutics targeting the embryonic pathways in the CSC signaling network. However, clinical development of agents that inhibit the Wnt/β-catenin, Notch and Hh signaling appear to be more complex in relapsed or refractory malignancies. A strategy to effectively target signaling may rely on early application of biomarkers representative of the active signaling nodes companion to the molecularly targeted agents. Biomarkers for efficacy could potentially guide selective treatment of hematological malignancies or cancer with drugs that target the embryonic pathways.
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Affiliation(s)
- Angelo B A Laranjeira
- a National Clinical Target Validation Laboratory, Division of Cancer Treatment and Diagnosis , National Cancer Institute, National Institutes of Health , Bethesda , MD , USA
| | - Sherry X Yang
- a National Clinical Target Validation Laboratory, Division of Cancer Treatment and Diagnosis , National Cancer Institute, National Institutes of Health , Bethesda , MD , USA
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33
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Zhi L, Gao Y, Yu C, Zhang Y, Zhang B, Yang J, Yao Z. N-Cadherin Aided in Maintaining the Characteristics of Leukemic Stem Cells. Anat Rec (Hoboken) 2016; 299:990-8. [PMID: 27064800 DOI: 10.1002/ar.23345] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2015] [Revised: 01/27/2016] [Accepted: 02/17/2016] [Indexed: 12/12/2022]
Abstract
In our previous study, it has been revealed that N-cadherin(+) and leukemic stem cells (LSCs, CD34(+) /CD38(-) /CD123(+) ) could be enriched by chemotherapy because of their resistance to chemotherapy. In this study, we found that N-cadherin mRNA was highly expressed in the bone marrow mononuclear cells (BMMNCs) of patients with t(8;21) translocation. To determine the role of N-cadherin in maintaining LSCs self-renewal and stationary properties, colony-forming assay, cell cycle analysis, and engraftment in nonobese diabetic/severe combined immunodeficiency (NOD/SCID) mice were used to compare N-cadherin(+) and N-cadherin(-) cells. Both leukemic cell lines KG1a and CD34(+) /CD38(-) BMMNCs derived from acute myeloid leukemia patients were used, and cells were divided into N-cadherin(+) and N-cadherin(-) fraction after sorting by FACS. The results showed that N-cadherin(+) cells had remarkable increased numbers of colonies with cytokines stimulation when compared with the negative control, suggesting a higher proliferative capacity of N-cadherin(+) cells with cytokines stimulation. The results also showed that most cells in N-cadherin(+) fraction stayed in the G0 -G1 stage, indicating the involvement of N-cadherin in maintaining the quiescent state of LSCs in niche. The results of engraftment showed that there was a higher proportion of hCD45(+) cells in mice transplanted with N-cadherin(+) cells than N-cadherin(-) cells. In addition, it was obvious that NOD/SCID mice transplanted with N-cadherin(+) cells had a shorter lifetime than the negative control, suggesting that LSCs self-renewal capacity resides predominantly in N-cadherin(+) fraction. In summary, N-cadherin might play an important role in maintaining the self-renewal and stationary properties of LSCs. Anat Rec, 299:990-998, 2016. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Lei Zhi
- Department of Immunology, Tianjin Key Laboratory of Cellular and Molecular Immunology, Key Laboratory of Immune Microenvironment and Disease of the Educational Ministry, Tianjin Medical University, Tianjin, P.R. China
| | - Ying Gao
- Department of Immunology, Tianjin Key Laboratory of Cellular and Molecular Immunology, Key Laboratory of Immune Microenvironment and Disease of the Educational Ministry, Tianjin Medical University, Tianjin, P.R. China
| | - Chunyan Yu
- Department of Immunology, Tianjin Key Laboratory of Cellular and Molecular Immunology, Key Laboratory of Immune Microenvironment and Disease of the Educational Ministry, Tianjin Medical University, Tianjin, P.R. China
| | - Yi Zhang
- Department of Medical Chemistry, Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and Diagnostics (Theranostics), College of Pharmacy, Tianjin Medical University, Tianjin, China
| | - Bo Zhang
- Department of Immunology, Tianjin Key Laboratory of Cellular and Molecular Immunology, Key Laboratory of Immune Microenvironment and Disease of the Educational Ministry, Tianjin Medical University, Tianjin, P.R. China
| | - Jie Yang
- Department of Biochemistry and Molecular Biology, Laboratory of Molecular Immunology, Research Center of Basic Medical Sciences, Key Laboratory of Cellular and Molecular Immunology and Key Laboratory of the Educational Ministry of China, Tianjin Medical University, Tianjin, China.,Department of Immunology, Laboratory of Molecular Immunology, Research Center of Basic Medical Sciences, Key Laboratory of Cellular and Molecular Immunology and Key Laboratory of the Educational Ministry of China, Tianjin Medical University, Tianjin, China
| | - Zhi Yao
- Department of Immunology, Tianjin Key Laboratory of Cellular and Molecular Immunology, Key Laboratory of Immune Microenvironment and Disease of the Educational Ministry, Tianjin Medical University, Tianjin, P.R. China
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Hsu LI, Briggs F, Shao X, Metayer C, Wiemels JL, Chokkalingam AP, Barcellos LF. Pathway Analysis of Genome-wide Association Study in Childhood Leukemia among Hispanics. Cancer Epidemiol Biomarkers Prev 2016; 25:815-22. [PMID: 26941364 PMCID: PMC4873450 DOI: 10.1158/1055-9965.epi-15-0528] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2015] [Accepted: 02/17/2016] [Indexed: 11/16/2022] Open
Abstract
BACKGROUND The incidence of acute lymphoblastic leukemia (ALL) is nearly 20% higher among Hispanics than non-Hispanic Whites. Previous studies have shown evidence for association between risk of ALL and variation within IKZF1, ARID5B, CEBPE, CDKN2A, GATA3, and BM1-PIP4K2A genes. However, variants identified only account for <10% of the genetic risk of ALL. METHODS We applied pathway-based analyses to genome-wide association study (GWAS) data from the California Childhood Leukemia Study to determine whether different biologic pathways were overrepresented in childhood ALL and major ALL subtypes. Furthermore, we applied causal inference and data reduction methods to prioritize candidate genes within each identified overrepresented pathway, while accounting for correlation among SNPs. RESULTS Pathway analysis results indicate that different ALL subtypes may involve distinct biologic mechanisms. Focal adhesion is a shared mechanism across the different disease subtypes. For ALL, the top five overrepresented Kyoto Encyclopedia of Genes and Genomes pathways include axon guidance, protein digestion and absorption, melanogenesis, leukocyte transendothelial migration, and focal adhesion (PFDR < 0.05). Notably, these pathways are connected to downstream MAPK or Wnt signaling pathways which have been linked to B-cell malignancies. Several candidate genes for ALL, such as COL6A6 and COL5A1, were identified through targeted maximum likelihood estimation. CONCLUSIONS This is the first study to show distinct biologic pathways are overrepresented in different ALL subtypes using pathway-based approaches, and identified potential gene candidates using causal inference methods. IMPACT The findings demonstrate that newly developed bioinformatics tools and causal inference methods can provide insights to furthering our understanding of the pathogenesis of leukemia. Cancer Epidemiol Biomarkers Prev; 25(5); 815-22. ©2016 AACR.
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Affiliation(s)
- Ling-I Hsu
- School of Public Health, University of California, Berkeley, Berkeley, California.
| | - Farren Briggs
- Department of Epidemiology and Biostatistics, School of Medicine, Case Western Reserve University, Cleveland, Ohio
| | - Xiaorong Shao
- School of Public Health, University of California, Berkeley, Berkeley, California
| | - Catherine Metayer
- School of Public Health, University of California, Berkeley, Berkeley, California
| | - Joseph L Wiemels
- Department of Epidemiology and Biostatistics, University of California, San Francisco, San Francisco, California
| | - Anand P Chokkalingam
- School of Public Health, University of California, Berkeley, Berkeley, California
| | - Lisa F Barcellos
- School of Public Health, University of California, Berkeley, Berkeley, California
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LIN XIAOCONG, XU YONG, SUN GUOPING, WEN JINLI, LI NING, ZHANG YUMING, YANG ZHIGANG, ZHANG HAITAO, DAI YONG. Molecular dysfunctions in acute myeloid leukemia revealed by integrated analysis of microRNA and transcription factor. Int J Oncol 2016; 48:2367-80. [DOI: 10.3892/ijo.2016.3489] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2015] [Accepted: 01/19/2016] [Indexed: 11/05/2022] Open
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Prognostic Significance of Secreted Frizzled-Related Protein 2 Expression in Cytogenetically Normal Primary Acute Myeloid Leukemia. Am J Med Sci 2015; 350:369-73. [DOI: 10.1097/maj.0000000000000567] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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Affiliation(s)
- K Kühn
- Faculty of Biology, Albert-Ludwigs-University Freiburg, Schänzlestraβe 1, Freiburg 79104, Germany
- BIOSS—Centre for Biological Signalling Studies, Albert-Ludwigs-University Freiburg, Schänzlestraβe 18, Freiburg 79104, Germany
| | - W Römer
- Faculty of Biology, Albert-Ludwigs-University Freiburg, Schänzlestraβe 1, Freiburg 79104, Germany
- BIOSS—Centre for Biological Signalling Studies, Albert-Ludwigs-University Freiburg, Schänzlestraβe 18, Freiburg 79104, Germany
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Vriend J, Ghavami S, Marzban H. The role of the ubiquitin proteasome system in cerebellar development and medulloblastoma. Mol Brain 2015; 8:64. [PMID: 26475605 PMCID: PMC4609148 DOI: 10.1186/s13041-015-0155-5] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2015] [Accepted: 10/08/2015] [Indexed: 01/12/2023] Open
Abstract
Cerebellar granule cells precursors are derived from the upper rhombic lip and migrate tangentially independent of glia along the subpial stream pathway to form the external germinal zone. Postnatally, granule cells migrate from the external germinal zone radially through the Purkinje cell layer, guided by Bergmann glia fibers, to the internal granular cell layer. Medulloblastomas (MBs) are the most common malignant childhood brain tumor. Many of these tumors develop from precursor cells of the embryonic rhombic lips. Four main groups of MB are recognized. The WNT group of MBs arise primarily from the lower rhombic lip and embryonic brainstem. The SHH group of MBs originate from cerebellar granule cell precursors in the external germinal zone of the embryonic cerebellum. The cellular origins of type 3 and type 4 MBs are not clear. Several ubiquitin ligases are revealed to be significant factors in development of the cerebellum as well as in the initiation and maintenance of MBs. Proteasome dysfunction at a critical stage of development may be a major factor in determining whether progenitor cells which are destined to become granule cells differentiate normally or become MB cells. We propose the hypothesis that proteasomal activity is essential to regulate the critical transition between proliferating granule cells and differentiated granule cells and that proteasome dysfunction may lead to MB. Proteasome dysfunction could also account for various mutations in MBs resulting from deficiencies in DNA checkpoint and repair mechanisms prior to development of MBs. Data showing a role for the ubiquitin ligases β-TrCP, FBW7, Huwe1, and SKP2 in MBs suggest the possibility of a classification of MBs based on the expression (over expression or under expression) of specific ubiquitin ligases which function as oncogenes, tumor suppressors or cell cycle regulators.
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Affiliation(s)
- Jerry Vriend
- Department of Human Anatomy and Cell Science, Rm129, BMSB, 745 Bannatyne Avenue, Winnipeg, MB, Canada
| | - Saeid Ghavami
- Department of Human Anatomy and Cell Science, Rm129, BMSB, 745 Bannatyne Avenue, Winnipeg, MB, Canada.,Children's Hospital Research Institute of Manitoba (CHRIM), College of Medicine, Faculty of Health Sciences, University of Manitoba, Winnipeg, MB, R3E 0J9, Canada
| | - Hassan Marzban
- Department of Human Anatomy and Cell Science, Rm129, BMSB, 745 Bannatyne Avenue, Winnipeg, MB, Canada. .,Children's Hospital Research Institute of Manitoba (CHRIM), College of Medicine, Faculty of Health Sciences, University of Manitoba, Winnipeg, MB, R3E 0J9, Canada.
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Ahmadzadeh A, Norozi F, Shahrabi S, Shahjahani M, Saki N. Wnt/β-catenin signaling in bone marrow niche. Cell Tissue Res 2015; 363:321-35. [PMID: 26475718 DOI: 10.1007/s00441-015-2300-y] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2015] [Accepted: 09/20/2015] [Indexed: 12/14/2022]
Abstract
The bone marrow (BM) niche is a specific physiological environment for hematopoietic and non-hematopoietic stem cells (HSCs). Several signaling pathways (including Wnt/β-catenin) regulate various aspects of stem cell growth, function and death in the BM niche. In addition, the canonical Wnt pathway is crucial for directing self-renewal and differentiation as important mechanisms in many types of stem cells. We review the role of the Wnt/β-catenin pathway in the BM niche and its importance in stem cells. Relevant literature was identified by a PubMed search (1997-2014) of English-language literature by using the following keywords: BM niche, Wnt/β-catenin signaling, osteoblast, osteoclast and bone disease. The Wnt/β-catenin pathway regulates the stability of the β-catenin proto-oncogene. The stabilized β-catenin then translocates to the nucleus, forming a β-catenin-TCF/LEF complex regulating the transcription of specific target genes. Stem cells require β-catenin to mediate their response to Wnt signaling for maintenance and transition from the pluripotent state during embryogenesis. In adult stem cells, Wnt signaling functions at various hierarchical levels to contribute to the specification of the diverse tissues. Aberrant Wnt/β-catenin signaling and its downstream transcriptional regulators are observed in several malignant stem cells and human cancers. Because Wnt signaling can maintain stem cells and cancer cells, the ability to modulate the Wnt pathway either positively or negatively may be of therapeutic relevance. The controlled activation of Wnt signaling might allow us to enhance stem and progenitor cell activity when regeneration is needed.
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Affiliation(s)
- Ahmad Ahmadzadeh
- Health Research Institute, Research Center of Thalassemia & Hemoglobinopathy, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Fatemeh Norozi
- Health Research Institute, Research Center of Thalassemia & Hemoglobinopathy, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Saeid Shahrabi
- Department of Biochemistry and Hematology, Faculty of Medicine, Semnan University of Medical Sciences, Semnan, Iran
| | - Mohammad Shahjahani
- Health Research Institute, Research Center of Thalassemia & Hemoglobinopathy, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Najmaldin Saki
- Health Research Institute, Research Center of Thalassemia & Hemoglobinopathy, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.
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Kühn K, Cott C, Bohler S, Aigal S, Zheng S, Villringer S, Imberty A, Claudinon J, Römer W. The interplay of autophagy and β-Catenin signaling regulates differentiation in acute myeloid leukemia. Cell Death Discov 2015; 1:15031. [PMID: 27551462 PMCID: PMC4979480 DOI: 10.1038/cddiscovery.2015.31] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2015] [Revised: 08/03/2015] [Accepted: 08/07/2015] [Indexed: 12/18/2022] Open
Abstract
The major feature of leukemic cells is an arrest of differentiation accompanied by highly active proliferation. In many subtypes of acute myeloid leukemia, these features are mediated by the aberrant Wnt/β-Catenin pathway. In our study, we established the lectin LecB as inducer of the differentiation of the acute myeloid leukemia cell line THP-1 and used it for the investigation of the involved processes. During differentiation, functional autophagy and low β-Catenin levels were essential. Corresponding to this, a high β-Catenin level stabilized proliferation and inhibited autophagy, resulting in low differentiation ability. Initiated by LecB, β-Catenin was degraded, autophagy became active and differentiation took place within hours. Remarkably, the reduction of β-Catenin sensitized THP-1 cells to the autophagy-stimulating mTOR inhibitors. As downmodulation of E-Cadherin was sufficient to significantly reduce LecB-mediated differentiation, we propose E-Cadherin as a crucial interaction partner in this signaling pathway. Upon LecB treatment, E-Cadherin colocalized with β-Catenin and thereby prevented the induction of β-Catenin target protein expression and proliferation. That way, our study provides for the first time a link between E-Cadherin, the aberrant Wnt/β-Catenin signaling, autophagy and differentiation in acute myeloid leukemia. Importantly, LecB was a valuable tool to elucidate the underlying molecular mechanisms of acute myeloid leukemia pathogenesis and may help to identify novel therapy approaches.
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Affiliation(s)
- K Kühn
- Faculty of Biology, Albert-Ludwigs-University Freiburg, Schänzlestraβe 1, 79104 Freiburg, Germany; BIOSS-Centre for Biological Signalling Studies, Albert-Ludwigs-University Freiburg, Schänzlestraβe 18, 79104 Freiburg, Germany
| | - C Cott
- Faculty of Biology, Albert-Ludwigs-University Freiburg, Schänzlestraβe 1, 79104 Freiburg, Germany; BIOSS-Centre for Biological Signalling Studies, Albert-Ludwigs-University Freiburg, Schänzlestraβe 18, 79104 Freiburg, Germany
| | - S Bohler
- Faculty of Biology, Albert-Ludwigs-University Freiburg, Schänzlestraβe 1, 79104 Freiburg, Germany; BIOSS-Centre for Biological Signalling Studies, Albert-Ludwigs-University Freiburg, Schänzlestraβe 18, 79104 Freiburg, Germany
| | - S Aigal
- Faculty of Biology, Albert-Ludwigs-University Freiburg, Schänzlestraβe 1, 79104 Freiburg, Germany; BIOSS-Centre for Biological Signalling Studies, Albert-Ludwigs-University Freiburg, Schänzlestraβe 18, 79104 Freiburg, Germany; International Max Planck Research School for Molecular and Cellular Biology (IMPRS-MCB), Max Planck Institute of Immunobiology and Epigenetics, Stübeweg 51, 79108 Freiburg, Germany
| | - S Zheng
- Faculty of Biology, Albert-Ludwigs-University Freiburg, Schänzlestraβe 1, 79104 Freiburg, Germany; BIOSS-Centre for Biological Signalling Studies, Albert-Ludwigs-University Freiburg, Schänzlestraβe 18, 79104 Freiburg, Germany
| | - S Villringer
- Faculty of Biology, Albert-Ludwigs-University Freiburg, Schänzlestraβe 1, 79104 Freiburg, Germany; BIOSS-Centre for Biological Signalling Studies, Albert-Ludwigs-University Freiburg, Schänzlestraβe 18, 79104 Freiburg, Germany
| | - A Imberty
- Centre de Recherches sur les Macromolécules Végétales (CERMAV), CNRS and Université Grenoble Alpes , 601 rue de la chimie, 38000 Grenoble, France
| | - J Claudinon
- Faculty of Biology, Albert-Ludwigs-University Freiburg, Schänzlestraβe 1, 79104 Freiburg, Germany; BIOSS-Centre for Biological Signalling Studies, Albert-Ludwigs-University Freiburg, Schänzlestraβe 18, 79104 Freiburg, Germany
| | - W Römer
- Faculty of Biology, Albert-Ludwigs-University Freiburg, Schänzlestraβe 1, 79104 Freiburg, Germany; BIOSS-Centre for Biological Signalling Studies, Albert-Ludwigs-University Freiburg, Schänzlestraβe 18, 79104 Freiburg, Germany
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Sun R, Zhang J, Xiong M, Wei H, Tan K, Yin L, Pu Y. Altered Expression of Genes in Signaling Pathways Regulating Proliferation of Hematopoietic Stem and Progenitor Cells in Mice with Subchronic Benzene Exposure. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2015; 12:9298-313. [PMID: 26262635 PMCID: PMC4555281 DOI: 10.3390/ijerph120809298] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/14/2015] [Revised: 07/29/2015] [Accepted: 08/02/2015] [Indexed: 12/25/2022]
Abstract
Leukemias and hematopoietic disorders induced by benzene may arise from the toxicity of benzene to hematopoietic stem or progenitor cells (HS/PCs). Since there is a latency period between initial benzene exposure and the development of leukemia, subsequent impact of benzene on HS/PCs are crucial for a deeper understanding of the carcinogenicity and hematotoxicity in post-exposure stage. This study aims to explore the effects of benzene on HS/PCs and gene-expression in Wnt, Notch and Hh signaling pathways in post-exposure stage. The C3H/He mice were injected subcutaneously with benzene (0, 150, 300 mg/kg/day) for three months and were monitored for another 10 months post-exposure. The body weights were monitored, the relative organ weights, blood parameters and bone marrow smears were examined. Frequency of lineage- sca-1+ c-kit+ (LSK) cells, capability of colony forming and expression of genes in Wnt, Notch and Hedghog (Hh) signaling pathways were also analyzed. The colony formation of the progenitor cells for BFU-E, CFU-GEMM and CFU-GM was significantly decreased with increasing benzene exposure relative to controls, while no significant difference was observed in colonies for CFU-G and CFU-M. The mRNA level of cyclin D1 was increased and Notch1 and p53 were decreased in LSK cells in mice exposed to benzene but with no statistical significance. These results suggest that subsequent toxic effects of benzene on LSK cells and gene expression in Wnt, Notch and Hh signaling pathways persist in post-exposure stage and may play roles in benzene-induced hematotoxicity.
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Affiliation(s)
- Rongli Sun
- Key Laboratory of Environmental Medicine Engineering, Ministry of Education.
| | - Juan Zhang
- Key Laboratory of Environmental Medicine Engineering, Ministry of Education.
| | - Mengzhen Xiong
- Key Laboratory of Environmental Medicine Engineering, Ministry of Education.
| | - Haiyan Wei
- Key Laboratory of Environmental Medicine Engineering, Ministry of Education.
| | - Kehong Tan
- Key Laboratory of Environmental Medicine Engineering, Ministry of Education.
| | - Lihong Yin
- Key Laboratory of Environmental Medicine Engineering, Ministry of Education.
| | - Yuepu Pu
- Key Laboratory of Environmental Medicine Engineering, Ministry of Education
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Reikvam H, Hauge M, Brenner AK, Hatfield KJ, Bruserud Ø. Emerging therapeutic targets for the treatment of human acute myeloid leukemia (part 1) - gene transcription, cell cycle regulation, metabolism and intercellular communication. Expert Rev Hematol 2015; 8:299-313. [PMID: 25835070 DOI: 10.1586/17474086.2015.1032935] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Human acute myeloid leukemia is a heterogeneous disease and the effect of therapeutic targeting of specific molecular mechanisms will probably vary between patient subsets. Cell cycle regulators are among the emerging targets (e.g., aurora and polo-like kinases, cyclin-dependent kinases). Inhibition of communication between acute myeloid leukemia and stromal cells is also considered; among the most promising of these strategies are inhibition of hedgehog-initiated, CXCR4-CXCL12 and Axl-Gas6 signaling. Finally, targeting of energy and protein metabolism is considered, the most promising strategy being inhibition of isocitrate dehydrogenase in patients with IDH mutations. Thus, several strategies are now considered, and a major common challenge for all of them is to clarify how they should be combined with each other or with conventional chemotherapy, and whether their use should be limited to certain subsets of patients.
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Affiliation(s)
- Håkon Reikvam
- Department of Medicine, Haukeland University Hospital, Bergen, Norway
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Morgan RG, Ridsdale J, Tonks A, Darley RL. Factors Affecting the Nuclear Localization of β-Catenin in Normal and Malignant Tissue. J Cell Biochem 2014; 115:1351-61. [DOI: 10.1002/jcb.24803] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2014] [Accepted: 03/04/2014] [Indexed: 01/01/2023]
Affiliation(s)
- Rhys G. Morgan
- School of Cellular and Molecular Medicine; University of Bristol; University Walk; Clifton Bristol BS8 1TD UK
| | - Jenna Ridsdale
- Department of Haematology; Institute of Cancer & Genetics; School of Medicine; Cardiff University; S Wales CF14 4XN UK
| | - Alex Tonks
- Department of Haematology; Institute of Cancer & Genetics; School of Medicine; Cardiff University; S Wales CF14 4XN UK
| | - Richard L. Darley
- Department of Haematology; Institute of Cancer & Genetics; School of Medicine; Cardiff University; S Wales CF14 4XN UK
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Orza A, Casciano D, Biris A. Nanomaterials for targeted drug delivery to cancer stem cells. Drug Metab Rev 2014; 46:191-206. [DOI: 10.3109/03602532.2014.900566] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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Regeneration-associated WNT signaling is activated in long-term reconstituting AC133bright acute myeloid leukemia cells. Neoplasia 2013; 14:1236-48. [PMID: 23308055 DOI: 10.1593/neo.121480] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2012] [Revised: 10/15/2012] [Accepted: 10/18/2012] [Indexed: 11/18/2022] Open
Abstract
Acute myeloid leukemia (AML) is a genetically heterogeneous clonal disorder characterized by two molecularly distinct self-renewing leukemic stem cell (LSC) populations most closely related to normal progenitors and organized as a hierarchy. A requirement for WNT/β-catenin signaling in the pathogenesis of AML has recently been suggested by a mouse model. However, its relationship to a specific molecular function promoting retention of self-renewing leukemia-initiating cells (LICs) in human remains elusive. To identify transcriptional programs involved in the maintenance of a self-renewing state in LICs, we performed the expression profiling in normal (n = 10) and leukemic (n = 33) human long-term reconstituting AC133(+) cells, which represent an expanded cell population in most AML patients. This study reveals the ligand-dependent WNT pathway activation in AC133(bright) AML cells and shows a diffuse expression and release of WNT10B, a hematopoietic stem cell regenerative-associated molecule. The establishment of a primary AC133(+) AML cell culture (A46) demonstrated that leukemia cells synthesize and secrete WNT ligands, increasing the levels of dephosphorylated β-catenin in vivo. We tested the LSC functional activity in AC133(+) cells and found significant levels of engraftment upon transplantation of A46 cells into irradiated Rag2(-/-)γc(-/-) mice. Owing to the link between hematopoietic regeneration and developmental signaling, we transplanted A46 cells into developing zebrafish. This system revealed the formation of ectopic structures by activating dorsal organizer markers that act downstream of the WNT pathway. In conclusion, our findings suggest that AC133(bright) LSCs are promoted by misappropriating homeostatic WNT programs that control hematopoietic regeneration.
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Hughes S, Brabin C, Appleford PJ, Woollard A. CEH-20/Pbx and UNC-62/Meis function upstream of rnt-1/Runx to regulate asymmetric divisions of the C. elegans stem-like seam cells. Biol Open 2013; 2:718-27. [PMID: 23862020 PMCID: PMC3711040 DOI: 10.1242/bio.20134549] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2013] [Accepted: 05/14/2013] [Indexed: 12/16/2022] Open
Abstract
Caenorhabditis elegans seam cells divide in the stem-like mode throughout larval development, with the ability to both self-renew and produce daughters that differentiate. Seam cells typically divide asymmetrically, giving rise to an anterior daughter that fuses with the hypodermis and a posterior daughter that proliferates further. Previously we have identified rnt-1 (a homologue of the mammalian cancer-associated stem cell regulator Runx) as being an important regulator of seam development, acting to promote proliferation; rnt-1 mutants have fewer seam cells whereas overexpressing rnt-1 causes seam cell hyperplasia. We isolated the interacting CEH-20/Pbx and UNC-62/Meis TALE-class transcription factors during a genome-wide RNAi screen for novel regulators of seam cell number. Animals lacking wild type CEH-20 or UNC-62 display seam cell hyperplasia, largely restricted to the anterior of the worm, whereas double mutants have many additional seam cells along the length of the animal. The cellular basis of the hyperplasia involves the symmetrisation of normally asymmetric seam cell divisions towards the proliferative stem-like fate. The hyperplasia is completely suppressed in rnt-1 mutants, and rnt-1 is upregulated in ceh-20 and unc-62 mutants, suggesting that CEH-20 and UNC-62 function upstream of rnt-1 to limit proliferative potential to the appropriate daughter cell. In further support of this we find that CEH-20 is asymmetrically localised in seam daughters following an asymmetric division, being predominantly restricted to anterior nuclei whose fate is to differentiate. Thus, ceh-20 and unc-62 encode crucial regulators of seam cell division asymmetry, acting via rnt-1 to regulate the balance between proliferation and differentiation.
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Affiliation(s)
- Samantha Hughes
- Department of Biochemistry, University of Oxford , South Parks Road, Oxford OX1 3QU , UK
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Sands WA, Copland M, Wheadon H. Targeting self-renewal pathways in myeloid malignancies. Cell Commun Signal 2013; 11:33. [PMID: 23675967 PMCID: PMC3665484 DOI: 10.1186/1478-811x-11-33] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2013] [Accepted: 04/22/2013] [Indexed: 12/23/2022] Open
Abstract
A fundamental property of hematopoietic stem cells (HSCs) is the ability to self-renew. This is a complex process involving multiple signal transduction cascades which control the fine balance between self-renewal and differentiation through transcriptional networks. Key activators/regulators of self-renewal include chemokines, cytokines and morphogens which are expressed in the bone marrow niche, either in a paracrine or autocrine fashion, and modulate stem cell behaviour. Increasing evidence suggests that the downstream signaling pathways induced by these ligands converge at multiple levels providing a degree of redundancy in steady state hematopoiesis. Here we will focus on how these pathways cross-talk to regulate HSC self-renewal highlighting potential therapeutic windows which could be targeted to prevent leukemic stem cell self-renewal in myeloid malignancies.
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Affiliation(s)
- William A Sands
- Paul O’Gorman Leukaemia Research Centre, College of Medical, Veterinary and Life Sciences, University of Glasgow, Gartnavel General Hospital, 1053 Great Western Road, Glasgow G12 0ZD, UK
| | - Mhairi Copland
- Paul O’Gorman Leukaemia Research Centre, College of Medical, Veterinary and Life Sciences, University of Glasgow, Gartnavel General Hospital, 1053 Great Western Road, Glasgow G12 0ZD, UK
| | - Helen Wheadon
- Paul O’Gorman Leukaemia Research Centre, College of Medical, Veterinary and Life Sciences, University of Glasgow, Gartnavel General Hospital, 1053 Great Western Road, Glasgow G12 0ZD, UK
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Despeaux M, Chicanne G, Rouer E, De Toni-Costes F, Bertrand J, Mansat-De Mas V, Vergnolle N, Eaves C, Payrastre B, Girault JA, Racaud-Sultan C. Focal adhesion kinase splice variants maintain primitive acute myeloid leukemia cells through altered Wnt signaling. Stem Cells 2013; 30:1597-610. [PMID: 22714993 DOI: 10.1002/stem.1157] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Focal adhesion kinase (FAK) activity contributes to many advanced cancer phenotypes, but little is known about its role in human acute myeloid leukemia (AML). Here, we show that FAK splice variants are abnormally expressed in the primitive leukemic cells of poor prognosis AML patients. In the CD34(+) 38(-) 123(+) long-term culture-initiating cell-enriched leukemic cells of these patients, FAK upregulates expression of Frizzled-4 and phosphorylates Pyk2 to enable the required association of Pyk2 with the Wnt5a/Frizzled-4/LRP5 endocytosis complex and downstream activation of β-catenin, thereby replacing the Wnt3a-controlled canonical pathway used by normal hematopoietic stem cells. Transduction of primitive normal human hematopoietic cells with FAK splice variants induces a marked increase in their clonogenic activity and signaling via the Wnt5a-controlled canonical pathway. Targeting FAK or β-catenin efficiently eradicates primitive leukemic cells in vitro suggesting that FAK could be a useful therapeutic target for improved treatment of poor prognosis AML cases.
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Affiliation(s)
- Mathieu Despeaux
- Inserm U1043, CNRS U5282, Centre de Physiopathologie de Toulouse Purpan, Toulouse, France
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49
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Wu X, Chen H, Wang X. Can lung cancer stem cells be targeted for therapies? Cancer Treat Rev 2012; 38:580-8. [DOI: 10.1016/j.ctrv.2012.02.013] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2011] [Revised: 02/26/2012] [Accepted: 02/28/2012] [Indexed: 12/26/2022]
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Elkouby YM, Polevoy H, Gutkovich YE, Michaelov A, Frank D. A hindbrain-repressive Wnt3a/Meis3/Tsh1 circuit promotes neuronal differentiation and coordinates tissue maturation. Development 2012; 139:1487-97. [PMID: 22399680 DOI: 10.1242/dev.072934] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
During development, early inducing programs must later be counterbalanced for coordinated tissue maturation. In Xenopus laevis embryos, activation of the Meis3 transcription factor by a mesodermal Wnt3a signal lies at the core of the hindbrain developmental program. We now identify a hindbrain restricting circuit, surprisingly comprising the hindbrain inducers Wnt3a and Meis3, and Tsh1 protein. Functional and biochemical analyses show that upon Tsh1 induction by strong Wnt3a/Meis3 feedback loop activity, the Meis3-Tsh1 transcription complex represses the Meis3 promoter, allowing cell cycle exit and neuron differentiation. Meis3 protein exhibits a conserved dual-role in hindbrain development, both inducing neural progenitors and maintaining their proliferative state. In this regulatory circuit, the Tsh1 co-repressor controls transcription factor gene expression that modulates cell cycle exit, morphogenesis and differentiation, thus coordinating neural tissue maturation. This newly identified Wnt/Meis/Tsh circuit could play an important role in diverse developmental and disease processes.
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Affiliation(s)
- Yaniv M Elkouby
- Department of Biochemistry, The Rappaport Family Institute for Research in the Medical Sciences, Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, Israel
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