1
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Jalnapurkar SS, Pawar AS, George SS, Antony C, Somers P, Grana J, Feist VK, Gurbuxani S, Paralkar VR. PHF6 suppresses self-renewal of leukemic stem cells in AML. Leukemia 2024:10.1038/s41375-024-02340-5. [PMID: 39004675 DOI: 10.1038/s41375-024-02340-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2024] [Revised: 06/26/2024] [Accepted: 07/03/2024] [Indexed: 07/16/2024]
Abstract
Acute myeloid leukemia is characterized by uncontrolled proliferation of self-renewing myeloid progenitors accompanied by a differentiation arrest. PHF6 is a chromatin-binding protein mutated in myeloid leukemias, and its isolated loss increases mouse HSC self-renewal without malignant transformation. We report here that Phf6 knockout increases the aggressiveness of Hoxa9-driven AML over serial transplantation, and increases the frequency of leukemia initiating cells. We define the in vivo hierarchy of Hoxa9-driven AML and identify a population that we term the "LIC-e" (leukemia initiating cells enriched) population. We find that Phf6 loss expands the LIC-e population and skews its transcriptome to a more stem-like state; concordant transcriptome shifts are also observed on PHF6 knockout in a human AML cell line and in PHF6 mutant patient samples from the BEAT AML dataset. We demonstrate that LIC-e accumulation in Phf6 knockout AML occurs not due to effects on cell cycle or apoptosis, but due to an increase in the fraction of its progeny that retain LIC-e identity. Our work indicates that Phf6 loss increases AML self-renewal through context-specific effects on leukemia stem cells.
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Affiliation(s)
- Sapana S Jalnapurkar
- Division of Hematology and Oncology, Department of Medicine, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA
| | - Aishwarya S Pawar
- Division of Hematology and Oncology, Department of Medicine, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA
- Biomedical Graduate Studies, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA
| | - Subin S George
- Institute for Biomedical Informatics, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA
| | - Charles Antony
- Division of Hematology and Oncology, Department of Medicine, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA
| | - Patrick Somers
- Division of Hematology and Oncology, Department of Medicine, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA
| | - Jason Grana
- Division of Hematology and Oncology, Department of Medicine, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA
| | - Victoria K Feist
- Division of Hematology and Oncology, Department of Medicine, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA
| | | | - Vikram R Paralkar
- Division of Hematology and Oncology, Department of Medicine, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA.
- Department of Cell and Developmental Biology, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA.
- Abramson Family Cancer Research Institute, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA.
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2
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Singh K, Showalter CA, Manring HR, Haque SJ, Chakravarti A. "Oh, Dear We Are in Tribble": An Overview of the Oncogenic Functions of Tribbles 1. Cancers (Basel) 2024; 16:1889. [PMID: 38791967 PMCID: PMC11120034 DOI: 10.3390/cancers16101889] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2024] [Revised: 05/11/2024] [Accepted: 05/13/2024] [Indexed: 05/26/2024] Open
Abstract
Pseudokinases are catalytically inactive proteins in the human genome that lack the ability to transfer phosphate from ATP to their substrates. The Tribbles family of pseudokinases contains three members: Tribbles 1, 2, and 3. Tribbles 1 has recently gained importance because of its involvement in various diseases, including cancer. It acts as a scaffolding protein that brings about the degradation of its substrate proteins, such as C/EBPα/β, MLXIPL, and RAR/RXRα, among others, via the ubiquitin proteasome system. It also serves as an adapter protein, which sequesters different protein molecules and activates their downstream signaling, leading to processes, such as cell survival, cell proliferation, and lipid metabolism. It has been implicated in cancers such as AML, prostate cancer, breast cancer, CRC, HCC, and glioma, where it activates oncogenic signaling pathways such as PI3K-AKT and MAPK and inhibits the anti-tumor function of p53. TRIB1 also causes treatment resistance in cancers such as NSCLC, breast cancer, glioma, and promyelocytic leukemia. All these effects make TRIB1 a potential drug target. However, the lack of a catalytic domain renders TRIB1 "undruggable", but knowledge about its structure, conformational changes during substrate binding, and substrate binding sites provides an opportunity to design small-molecule inhibitors against specific TRIB1 interactions.
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Affiliation(s)
| | | | | | | | - Arnab Chakravarti
- Department of Radiation Oncology, The Ohio State University Comprehensive Cancer Center, Columbus, OH 43210, USA
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3
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Diepstraten ST, Yuan Y, La Marca JE, Young S, Chang C, Whelan L, Ross AM, Fischer KC, Pomilio G, Morris R, Georgiou A, Litalien V, Brown FC, Roberts AW, Strasser A, Wei AH, Kelly GL. Putting the STING back into BH3-mimetic drugs for TP53-mutant blood cancers. Cancer Cell 2024; 42:850-868.e9. [PMID: 38670091 DOI: 10.1016/j.ccell.2024.04.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/23/2023] [Revised: 01/06/2024] [Accepted: 04/04/2024] [Indexed: 04/28/2024]
Abstract
TP53-mutant blood cancers remain a clinical challenge. BH3-mimetic drugs inhibit BCL-2 pro-survival proteins, inducing cancer cell apoptosis. Despite acting downstream of p53, functional p53 is required for maximal cancer cell killing by BH3-mimetics through an unknown mechanism. Here, we report p53 is activated following BH3-mimetic induced mitochondrial outer membrane permeabilization, leading to BH3-only protein induction and thereby potentiating the pro-apoptotic signal. TP53-deficient lymphomas lack this feedforward loop, providing opportunities for survival and disease relapse after BH3-mimetic treatment. The therapeutic barrier imposed by defects in TP53 can be overcome by direct activation of the cGAS/STING pathway, which promotes apoptosis of blood cancer cells through p53-independent BH3-only protein upregulation. Combining clinically relevant STING agonists with BH3-mimetic drugs efficiently kills TRP53/TP53-mutant mouse B lymphoma, human NK/T lymphoma, and acute myeloid leukemia cells. This represents a promising therapy regime that can be fast-tracked to tackle TP53-mutant blood cancers in the clinic.
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Affiliation(s)
- Sarah T Diepstraten
- Blood Cells and Blood Cancer Division, The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC 3052, Australia; Department of Medical Biology, University of Melbourne, Parkville, VIC 3052, Australia.
| | - Yin Yuan
- Blood Cells and Blood Cancer Division, The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC 3052, Australia; Department of Medical Biology, University of Melbourne, Parkville, VIC 3052, Australia; Department of Clinical Haematology, Peter MacCallum Cancer Centre and Royal Melbourne Hospital, Melbourne, VIC 3050, Australia
| | - John E La Marca
- Blood Cells and Blood Cancer Division, The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC 3052, Australia; Department of Medical Biology, University of Melbourne, Parkville, VIC 3052, Australia; Genome Engineering and Cancer Modelling Program, Olivia Newton-John Cancer Research Institute, Heidelberg, VIC 3084, Australia; School of Cancer Medicine, La Trobe University, Melbourne, VIC 3086, Australia
| | - Savannah Young
- Blood Cells and Blood Cancer Division, The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC 3052, Australia
| | - Catherine Chang
- Blood Cells and Blood Cancer Division, The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC 3052, Australia
| | - Lauren Whelan
- Blood Cells and Blood Cancer Division, The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC 3052, Australia
| | - Aisling M Ross
- Blood Cells and Blood Cancer Division, The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC 3052, Australia; School of Medicine, Bernal Institute, Limerick Digital Cancer Research Centre & Health Research Institute, University of Limerick, Limerick, Ireland
| | - Karla C Fischer
- Blood Cells and Blood Cancer Division, The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC 3052, Australia; Department of Medical Biology, University of Melbourne, Parkville, VIC 3052, Australia
| | - Giovanna Pomilio
- Blood Cells and Blood Cancer Division, The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC 3052, Australia
| | - Rhiannon Morris
- Blood Cells and Blood Cancer Division, The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC 3052, Australia; Department of Medical Biology, University of Melbourne, Parkville, VIC 3052, Australia
| | - Angela Georgiou
- Blood Cells and Blood Cancer Division, The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC 3052, Australia
| | - Veronique Litalien
- Blood Cells and Blood Cancer Division, The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC 3052, Australia
| | - Fiona C Brown
- Blood Cells and Blood Cancer Division, The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC 3052, Australia; Department of Medical Biology, University of Melbourne, Parkville, VIC 3052, Australia; Australian Centre for Blood Diseases, Monash University, Melbourne, VIC 3004, Australia
| | - Andrew W Roberts
- Blood Cells and Blood Cancer Division, The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC 3052, Australia; Department of Medical Biology, University of Melbourne, Parkville, VIC 3052, Australia; Department of Clinical Haematology, Peter MacCallum Cancer Centre and Royal Melbourne Hospital, Melbourne, VIC 3050, Australia
| | - Andreas Strasser
- Blood Cells and Blood Cancer Division, The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC 3052, Australia; Department of Medical Biology, University of Melbourne, Parkville, VIC 3052, Australia
| | - Andrew H Wei
- Blood Cells and Blood Cancer Division, The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC 3052, Australia; Department of Medical Biology, University of Melbourne, Parkville, VIC 3052, Australia; Department of Clinical Haematology, Peter MacCallum Cancer Centre and Royal Melbourne Hospital, Melbourne, VIC 3050, Australia
| | - Gemma L Kelly
- Blood Cells and Blood Cancer Division, The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC 3052, Australia; Department of Medical Biology, University of Melbourne, Parkville, VIC 3052, Australia.
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4
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Khan I, Amin MA, Eklund EA, Gartel AL. Regulation of HOX gene expression in AML. Blood Cancer J 2024; 14:42. [PMID: 38453907 PMCID: PMC10920644 DOI: 10.1038/s41408-024-01004-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2023] [Revised: 02/12/2024] [Accepted: 02/14/2024] [Indexed: 03/09/2024] Open
Abstract
As key developmental regulators, HOX cluster genes have varied and context-specific roles in normal and malignant hematopoiesis. A complex interaction of transcription factors, epigenetic regulators, long non-coding RNAs and chromatin structural changes orchestrate HOX expression in leukemia cells. In this review we summarize molecular mechanisms underlying HOX regulation in clinical subsets of AML, with a focus on NPM1 mutated (NPM1mut) AML comprising a third of all AML patients. While the leukemia initiating function of the NPM1 mutation is clearly dependent on HOX activity, the favorable treatment responses in these patients with upregulation of HOX cluster genes is a poorly understood paradoxical observation. Recent data confirm FOXM1 as a suppressor of HOX activity and a well-known binding partner of NPM suggesting that FOXM1 inactivation may mediate the effect of cytoplasmic NPM on HOX upregulation. Conversely the residual nuclear fraction of mutant NPM has also been recently shown to have chromatin modifying effects permissive to HOX expression. Recent identification of the menin-MLL interaction as a critical vulnerability of HOX-dependent AML has fueled the development of menin inhibitors that are clinically active in NPM1 and MLL rearranged AML despite inconsistent suppression of the HOX locus. Insights into context-specific regulation of HOX in AML may provide a solid foundation for targeting this common vulnerability across several major AML subtypes.
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Affiliation(s)
- Irum Khan
- Robert H. Lurie Comprehensive Cancer Center, Northwestern University, Chicago, IL, USA
- Department of Medicine at the Feinberg School of Medicine, Northwestern University, Chicago, USA
| | - Mohammed A Amin
- Robert H. Lurie Comprehensive Cancer Center, Northwestern University, Chicago, IL, USA
| | - Elizabeth A Eklund
- Robert H. Lurie Comprehensive Cancer Center, Northwestern University, Chicago, IL, USA
- Department of Medicine at the Feinberg School of Medicine, Northwestern University, Chicago, USA
- Jesse Brown VA Medical Center, Chicago, IL, USA
| | - Andrei L Gartel
- Department of Medicine, University of Illinois, Chicago, IL, USA.
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5
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Barbosa K, Deshpande A, Perales M, Xiang P, Murad R, Pramod AB, Minkina A, Robertson N, Schischlik F, Lei X, Sun Y, Brown A, Amend D, Jeremias I, Doench JG, Humphries RK, Ruppin E, Shendure J, Mali P, Adams PD, Deshpande AJ. Transcriptional control of leukemogenesis by the chromatin reader SGF29. Blood 2024; 143:697-712. [PMID: 38048593 PMCID: PMC10900139 DOI: 10.1182/blood.2023021234] [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: 05/31/2023] [Revised: 11/15/2023] [Accepted: 11/27/2023] [Indexed: 12/06/2023] Open
Abstract
ABSTRACT Aberrant expression of stem cell-associated genes is a common feature in acute myeloid leukemia (AML) and is linked to leukemic self-renewal and therapy resistance. Using AF10-rearranged leukemia as a prototypical example of the recurrently activated "stemness" network in AML, we screened for chromatin regulators that sustain its expression. We deployed a CRISPR-Cas9 screen with a bespoke domain-focused library and identified several novel chromatin-modifying complexes as regulators of the TALE domain transcription factor MEIS1, a key leukemia stem cell (LSC)-associated gene. CRISPR droplet sequencing revealed that many of these MEIS1 regulators coordinately controlled the transcription of several AML oncogenes. In particular, we identified a novel role for the Tudor-domain-containing chromatin reader protein SGF29 in the transcription of AML oncogenes. Furthermore, SGF29 deletion impaired leukemogenesis in models representative of multiple AML subtypes in multiple AML subtype models. Our studies reveal a novel role for SGF29 as a nononcogenic dependency in AML and identify the SGF29 Tudor domain as an attractive target for drug discovery.
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Affiliation(s)
- Karina Barbosa
- Cancer Genome and Epigenetics Program, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, CA
| | - Anagha Deshpande
- Cancer Genome and Epigenetics Program, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, CA
| | - Marlenne Perales
- Cancer Genome and Epigenetics Program, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, CA
| | - Ping Xiang
- British Columbia Cancer Agency, Vancouver, BC, Canada
| | - Rabi Murad
- Cancer Genome and Epigenetics Program, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, CA
| | - Akula Bala Pramod
- Cancer Genome and Epigenetics Program, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, CA
| | - Anna Minkina
- Department of Genome Sciences, University of Washington, Seattle, WA
| | - Neil Robertson
- Institute of Cancer Sciences, University of Glasgow, Glasgow, United Kingdom
| | - Fiorella Schischlik
- Cancer Data Science Laboratory, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD
| | - Xue Lei
- Cancer Genome and Epigenetics Program, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, CA
| | - Younguk Sun
- Cancer Genome and Epigenetics Program, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, CA
| | - Adam Brown
- Research Unit Apoptosis in Hematopoietic Stem Cells, Helmholtz Center Munich, Munich, Germany
| | - Diana Amend
- Research Unit Apoptosis in Hematopoietic Stem Cells, Helmholtz Center Munich, Munich, Germany
| | - Irmela Jeremias
- Research Unit Apoptosis in Hematopoietic Stem Cells, Helmholtz Center Munich, Munich, Germany
| | | | | | - Eytan Ruppin
- Cancer Data Science Laboratory, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD
| | - Jay Shendure
- Department of Genome Sciences, University of Washington, Seattle, WA
| | - Prashant Mali
- Department of Bioengineering, University of California, San Diego, San Diego, CA
| | - Peter D. Adams
- Cancer Genome and Epigenetics Program, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, CA
| | - Aniruddha J. Deshpande
- Cancer Genome and Epigenetics Program, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, CA
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6
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Jalnapurkar SS, Pawar A, George SS, Antony C, Grana J, Gurbuxani S, Paralkar VR. PHF6 suppresses self-renewal of leukemic stem cells in AML. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.01.06.573649. [PMID: 38260439 PMCID: PMC10802281 DOI: 10.1101/2024.01.06.573649] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/24/2024]
Abstract
Acute myeloid leukemia is characterized by uncontrolled proliferation of self-renewing myeloid progenitors. PHF6 is a chromatin-binding protein mutated in myeloid leukemias, and its loss increases mouse HSC self-renewal without malignant transformation. We report here that Phf6 knockout increases the aggressiveness of Hoxa9-driven AML over serial transplantation, and increases the frequency of leukemia initiating cells. We define the in vivo hierarchy of Hoxa9-driven AML and identify a population that we term the 'LIC-e' (leukemia initiating cells enriched) population. We find that Phf6 loss has context-specific transcriptional effects, skewing the LIC-e transcriptome to a more stem-like state. We demonstrate that LIC-e accumulation in Phf6 knockout AML occurs not due to effects on cell cycle or apoptosis, but due to an increase in the fraction of its progeny that retain LIC-e identity. Overall, our work indicates that Phf6 loss increases AML self-renewal through context-specific effects on leukemia stem cells.
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Affiliation(s)
- Sapana S Jalnapurkar
- Division of Hematology and Oncology, Department of Medicine, University of Pennsylvania, Perelman School of Medicine, Philadelphia, PA 19104, USA
| | - Aishwarya Pawar
- Division of Hematology and Oncology, Department of Medicine, University of Pennsylvania, Perelman School of Medicine, Philadelphia, PA 19104, USA
- Biomedical Graduate Studies, University of Pennsylvania, Perelman School of Medicine, Philadelphia, PA 19104, USA
| | - Subin S George
- Institute for Biomedical Informatics, University of Pennsylvania, Perelman School of Medicine, Philadelphia, PA 19104, USA
| | - Charles Antony
- Division of Hematology and Oncology, Department of Medicine, University of Pennsylvania, Perelman School of Medicine, Philadelphia, PA 19104, USA
| | - Jason Grana
- Division of Hematology and Oncology, Department of Medicine, University of Pennsylvania, Perelman School of Medicine, Philadelphia, PA 19104, USA
| | - Sandeep Gurbuxani
- Department of Pathology, University of Chicago, Chicago, IL 60637, USA
| | - Vikram R Paralkar
- Division of Hematology and Oncology, Department of Medicine, University of Pennsylvania, Perelman School of Medicine, Philadelphia, PA 19104, USA
- Department of Cell and Developmental Biology, University of Pennsylvania, Perelman School of Medicine, Philadelphia, PA 19104, USA
- Abramson Family Cancer Research Institute, University of Pennsylvania, Perelman School of Medicine, Philadelphia, PA 19104, USA
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7
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Wang N, Yin J, You N, Zhu W, Guo N, Liu X, Zhang P, Huang W, Xie Y, Ren Q, Ma X. Twist family BHLH transcription factor 1 is required for the maintenance of leukemia stem cell in MLL-AF9 + acute myeloid leukemia. Haematologica 2024; 109:84-97. [PMID: 37767575 PMCID: PMC10772510 DOI: 10.3324/haematol.2023.282748] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2023] [Accepted: 09/20/2023] [Indexed: 09/29/2023] Open
Abstract
Leukemia stem cells (LSC) are a rare population capable of limitless self-renewal and are responsible for the initiation, maintenance, and relapse of leukemia. Elucidation of the mechanisms underlying the regulation of LSC function could provide novel treatment strategies. Here, we show that TWIST1 is extremely highly expressed in the LSC of MLL-AF9+ acute myeloid leukemia (AML), and its upregulation is positively regulated by KDM4C in a H3K9me3 demethylation-dependent manner. We further demonstrate that TWIST1 is essential for the viability, dormancy, and self-renewal capacities of LSC, and that it promotes the initiation and maintenance of MLL-AF9-mediated AML. In addition, TWIST1 directly interacts and collaborates with HOXA9 in inducing AML in mice. Mechanistically, TWIST1 exerts its oncogenic function by activating the WNT5a/RAC1 axis. Collectively, our study uncovers a critical role of TWIST1 in LSC function and provides new mechanistic insights into the pathogenesis of MLL-AF9+ AML.
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Affiliation(s)
- Nan Wang
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Institute of Hematology and Blood Diseases Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin, China; Tianjin Institutes of Health Science, Tianjin 301600, China; Center for Stem Cell Medicine, Chinese Academy of Medical Sciences, Tianjin
| | - Jing Yin
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Institute of Hematology and Blood Diseases Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin, China; Tianjin Institutes of Health Science, Tianjin 301600, China; Center for Stem Cell Medicine, Chinese Academy of Medical Sciences, Tianjin
| | - Na You
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Institute of Hematology and Blood Diseases Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin, China; Tianjin Institutes of Health Science, Tianjin 301600, China; Center for Stem Cell Medicine, Chinese Academy of Medical Sciences, Tianjin
| | - Wenqi Zhu
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Institute of Hematology and Blood Diseases Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin, China; Tianjin Institutes of Health Science, Tianjin 301600, China; Center for Stem Cell Medicine, Chinese Academy of Medical Sciences, Tianjin
| | - Nini Guo
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Institute of Hematology and Blood Diseases Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin, China; Tianjin Institutes of Health Science, Tianjin 301600, China; Center for Stem Cell Medicine, Chinese Academy of Medical Sciences, Tianjin
| | - Xiaoyan Liu
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Institute of Hematology and Blood Diseases Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin, China; Tianjin Institutes of Health Science, Tianjin 301600, China; Center for Stem Cell Medicine, Chinese Academy of Medical Sciences, Tianjin
| | - Peiwen Zhang
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Institute of Hematology and Blood Diseases Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin, China; Tianjin Institutes of Health Science, Tianjin 301600, China; Center for Stem Cell Medicine, Chinese Academy of Medical Sciences, Tianjin
| | - Wanling Huang
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Institute of Hematology and Blood Diseases Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin, China; Tianjin Institutes of Health Science, Tianjin 301600, China; Center for Stem Cell Medicine, Chinese Academy of Medical Sciences, Tianjin
| | - Yueqiao Xie
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Institute of Hematology and Blood Diseases Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin, China; Tianjin Institutes of Health Science, Tianjin 301600, China; Center for Stem Cell Medicine, Chinese Academy of Medical Sciences, Tianjin
| | - Qian Ren
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Institute of Hematology and Blood Diseases Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin, China; Tianjin Institutes of Health Science, Tianjin 301600, China; Center for Stem Cell Medicine, Chinese Academy of Medical Sciences, Tianjin
| | - Xiaotong Ma
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Institute of Hematology and Blood Diseases Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin, China; Tianjin Institutes of Health Science, Tianjin 301600, China; Center for Stem Cell Medicine, Chinese Academy of Medical Sciences, Tianjin.
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8
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Aryal S, Lu R. HOXA9 Regulome and Pharmacological Interventions in Leukemia. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2024; 1459:405-430. [PMID: 39017854 DOI: 10.1007/978-3-031-62731-6_18] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/18/2024]
Abstract
HOXA9, an important transcription factor (TF) in hematopoiesis, is aberrantly expressed in numerous cases of both acute myeloid leukemia (AML) and acute lymphoblastic leukemia (ALL) and is a strong indicator of poor prognosis in patients. HOXA9 is a proto-oncogene which is both sufficient and necessary for leukemia transformation. HOXA9 expression in leukemia correlates with patient survival outcomes and response to therapy. Chromosomal transformations (such as NUP98-HOXA9), mutations, epigenetic dysregulation (e.g., MLL- MENIN -LEDGF complex or DOT1L/KMT4), transcription factors (such as USF1/USF2), and noncoding RNA (such as HOTTIP and HOTAIR) regulate HOXA9 mRNA and protein during leukemia. HOXA9 regulates survival, self-renewal, and progenitor cell cycle through several of its downstream target TFs including LMO2, antiapoptotic BCL2, SOX4, and receptor tyrosine kinase FLT3 and STAT5. This dynamic and multilayered HOXA9 regulome provides new therapeutic opportunities, including inhibitors targeting DOT1L/KMT4, MENIN, NPM1, and ENL proteins. Recent findings also suggest that HOXA9 maintains leukemia by actively repressing myeloid differentiation genes. This chapter summarizes the recent advances understanding biochemical mechanisms underlying HOXA9-mediated leukemogenesis, the clinical significance of its abnormal expression, and pharmacological approaches to treat HOXA9-driven leukemia.
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Affiliation(s)
- Sajesan Aryal
- Department of Medicine, Division of Hematology/Oncology, University of Alabama at Birmingham Heersink School of Medicine, Birmingham, AL, USA
- O'Neal Comprehensive Cancer Center, University of Alabama at Birmingham Heersink School of Medicine, Birmingham, AL, USA
| | - Rui Lu
- Department of Medicine, Division of Hematology/Oncology, University of Alabama at Birmingham Heersink School of Medicine, Birmingham, AL, USA.
- O'Neal Comprehensive Cancer Center, University of Alabama at Birmingham Heersink School of Medicine, Birmingham, AL, USA.
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9
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Xu Z, Flensburg C, Bilardi RA, Majewski IJ. Uridine-cytidine kinase 2 potentiates the mutagenic influence of the antiviral β-d-N4-hydroxycytidine. Nucleic Acids Res 2023; 51:12031-12042. [PMID: 37953355 PMCID: PMC10711452 DOI: 10.1093/nar/gkad1002] [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: 06/07/2023] [Revised: 10/11/2023] [Accepted: 10/19/2023] [Indexed: 11/14/2023] Open
Abstract
Molnupiravir (EIDD-2801) is an antiviral that received approval for the treatment of severe acute respiratory syndrome coronavirus 2 (SARS-CoV2) infection. Treatment of bacteria or cell lines with the active form of molnupiravir, β-d-N4-hydroxycytidine (NHC, or EIDD-1931), induces mutations in DNA. Yet these results contrast in vivo genotoxicity studies conducted during registration of the drug. Using a CRISPR screen, we found that inactivating the pyrimidine salvage pathway component uridine-cytidine kinase 2 (Uck2) renders cells more tolerant of NHC. Short-term exposure to NHC increased the mutation rate in a mouse myeloid cell line, with most mutations being T:A to C:G transitions. Inactivating Uck2 impaired the mutagenic activity of NHC, whereas over-expression of Uck2 enhanced mutagenesis. UCK2 is upregulated in many cancers and cell lines. Our results suggest differences in ribonucleoside metabolism contribute to the variable mutagenicity of NHC observed in cancer cell lines and primary tissues.
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Affiliation(s)
- Zhen Xu
- The Walter and Eliza Hall Institute of Medical Research, 1G Royal Parade, VIC3052, Australia
- University of Melbourne, Department of Medical Biology, 1G Royal Parade, VIC3052, Australia
| | - Christoffer Flensburg
- The Walter and Eliza Hall Institute of Medical Research, 1G Royal Parade, VIC3052, Australia
- University of Melbourne, Department of Medical Biology, 1G Royal Parade, VIC3052, Australia
| | - Rebecca A Bilardi
- The Walter and Eliza Hall Institute of Medical Research, 1G Royal Parade, VIC3052, Australia
- University of Melbourne, Department of Medical Biology, 1G Royal Parade, VIC3052, Australia
| | - Ian J Majewski
- The Walter and Eliza Hall Institute of Medical Research, 1G Royal Parade, VIC3052, Australia
- University of Melbourne, Department of Medical Biology, 1G Royal Parade, VIC3052, Australia
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10
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Weinhäuser I, Pereira-Martins DA, Almeida LY, Hilberink JR, Silveira DRA, Quek L, Ortiz C, Araujo CL, Bianco TM, Lucena-Araujo A, Mota JM, Hogeling SM, Sternadt D, Visser N, Diepstra A, Ammatuna E, Huls G, Rego EM, Schuringa JJ. M2 macrophages drive leukemic transformation by imposing resistance to phagocytosis and improving mitochondrial metabolism. SCIENCE ADVANCES 2023; 9:eadf8522. [PMID: 37058562 DOI: 10.1126/sciadv.adf8522] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Accepted: 03/14/2023] [Indexed: 06/19/2023]
Abstract
It is increasingly becoming clear that cancers are a symbiosis of diverse cell types and tumor clones. Combined single-cell RNA sequencing, flow cytometry, and immunohistochemistry studies of the innate immune compartment in the bone marrow of patients with acute myeloid leukemia (AML) reveal a shift toward a tumor-supportive M2-polarized macrophage landscape with an altered transcriptional program, with enhanced fatty acid oxidation and NAD+ generation. Functionally, these AML-associated macrophages display decreased phagocytic activity and intra-bone marrow coinjection of M2 macrophages together with leukemic blasts strongly enhances in vivo transformation potential. A 2-day in vitro exposure to M2 macrophages results in the accumulation of CALRlow leukemic blast cells, which are now protected against phagocytosis. Moreover, M2-exposed "trained" leukemic blasts display increased mitochondrial metabolism, in part mediated via mitochondrial transfer. Our study provides insight into the mechanisms by which the immune landscape contributes to aggressive leukemia development and provides alternatives for targeting strategies aimed at the tumor microenvironment.
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Affiliation(s)
- Isabel Weinhäuser
- Department of Experimental Hematology, Cancer Research Centre Groningen, University Medical Centre Groningen, University of Groningen, Groningen, Netherlands
- Department of Internal Medicine, Medical School of Ribeirao Preto, University of São Paulo, Ribeirao Preto, Brazil
- Center for Cell Based Therapy, University of São Paulo, Ribeirao Preto, Brazil
| | - Diego A Pereira-Martins
- Department of Experimental Hematology, Cancer Research Centre Groningen, University Medical Centre Groningen, University of Groningen, Groningen, Netherlands
- Department of Internal Medicine, Medical School of Ribeirao Preto, University of São Paulo, Ribeirao Preto, Brazil
- Center for Cell Based Therapy, University of São Paulo, Ribeirao Preto, Brazil
| | - Luciana Y Almeida
- Department of Internal Medicine, Medical School of Ribeirao Preto, University of São Paulo, Ribeirao Preto, Brazil
| | - Jacobien R Hilberink
- Department of Experimental Hematology, Cancer Research Centre Groningen, University Medical Centre Groningen, University of Groningen, Groningen, Netherlands
| | - Douglas R A Silveira
- Myeloid Leukaemia Genomics and Biology Group, School of Cancer and Pharmaceutical Sciences, King's College London, London, SE5 8AF, UK
| | - Lynn Quek
- Myeloid Leukaemia Genomics and Biology Group, School of Cancer and Pharmaceutical Sciences, King's College London, London, SE5 8AF, UK
| | - Cesar Ortiz
- Department of Internal Medicine, Medical School of Ribeirao Preto, University of São Paulo, Ribeirao Preto, Brazil
- Center for Cell Based Therapy, University of São Paulo, Ribeirao Preto, Brazil
| | - Cleide L Araujo
- Department of Internal Medicine, Medical School of Ribeirao Preto, University of São Paulo, Ribeirao Preto, Brazil
| | - Thiago M Bianco
- Department of Internal Medicine, Medical School of Ribeirao Preto, University of São Paulo, Ribeirao Preto, Brazil
| | | | - Jose Mauricio Mota
- Medical Oncology Service, Sao Paulo State Cancer Institute, University of Sao Paulo, Brazil
| | - Shanna M Hogeling
- Department of Experimental Hematology, Cancer Research Centre Groningen, University Medical Centre Groningen, University of Groningen, Groningen, Netherlands
| | - Dominique Sternadt
- Department of Experimental Hematology, Cancer Research Centre Groningen, University Medical Centre Groningen, University of Groningen, Groningen, Netherlands
| | - Nienke Visser
- Department of Experimental Hematology, Cancer Research Centre Groningen, University Medical Centre Groningen, University of Groningen, Groningen, Netherlands
| | - Arjan Diepstra
- Department of Pathology and Medical Biology, Cancer Research Centre Groningen, University Medical Centre Groningen, University of Groningen, Groningen, Netherlands
| | - Emanuele Ammatuna
- Department of Experimental Hematology, Cancer Research Centre Groningen, University Medical Centre Groningen, University of Groningen, Groningen, Netherlands
| | - Gerwin Huls
- Department of Experimental Hematology, Cancer Research Centre Groningen, University Medical Centre Groningen, University of Groningen, Groningen, Netherlands
| | - Eduardo M Rego
- Center for Cell Based Therapy, University of São Paulo, Ribeirao Preto, Brazil
| | - Jan Jacob Schuringa
- Department of Experimental Hematology, Cancer Research Centre Groningen, University Medical Centre Groningen, University of Groningen, Groningen, Netherlands
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11
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Agrawal-Singh S, Bagri J, Giotopoulos G, Azazi DMA, Horton SJ, Lopez CK, Anand S, Bach AS, Stedham F, Antrobus R, Houghton JW, Vassiliou GS, Sasca D, Yun H, Whetton AD, Huntly BJP. HOXA9 forms a repressive complex with nuclear matrix-associated protein SAFB to maintain acute myeloid leukemia. Blood 2023; 141:1737-1754. [PMID: 36577137 PMCID: PMC10113176 DOI: 10.1182/blood.2022016528] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Revised: 11/07/2022] [Accepted: 11/28/2022] [Indexed: 12/29/2022] Open
Abstract
HOXA9 is commonly upregulated in acute myeloid leukemia (AML), in which it confers a poor prognosis. Characterizing the protein interactome of endogenous HOXA9 in human AML, we identified a chromatin complex of HOXA9 with the nuclear matrix attachment protein SAFB. SAFB perturbation phenocopied HOXA9 knockout to decrease AML proliferation, increase differentiation and apoptosis in vitro, and prolong survival in vivo. Integrated genomic, transcriptomic, and proteomic analyses further demonstrated that the HOXA9-SAFB (H9SB)-chromatin complex associates with nucleosome remodeling and histone deacetylase (NuRD) and HP1γ to repress the expression of factors associated with differentiation and apoptosis, including NOTCH1, CEBPδ, S100A8, and CDKN1A. Chemical or genetic perturbation of NuRD and HP1γ-associated catalytic activity also triggered differentiation, apoptosis, and the induction of these tumor-suppressive genes. Importantly, this mechanism is operative in other HOXA9-dependent AML genotypes. This mechanistic insight demonstrates the active HOXA9-dependent differentiation block as a potent mechanism of disease maintenance in AML that may be amenable to therapeutic intervention by targeting the H9SB interface and/or NuRD and HP1γ activity.
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Affiliation(s)
- Shuchi Agrawal-Singh
- Wellcome Trust-MRC Cambridge Stem Cell Institute, Cambridge, United Kingdom
- Department of Haematology, University of Cambridge, Cambridge, United Kingdom
| | - Jaana Bagri
- Wellcome Trust-MRC Cambridge Stem Cell Institute, Cambridge, United Kingdom
- Department of Haematology, University of Cambridge, Cambridge, United Kingdom
| | - George Giotopoulos
- Wellcome Trust-MRC Cambridge Stem Cell Institute, Cambridge, United Kingdom
- Department of Haematology, University of Cambridge, Cambridge, United Kingdom
| | - Dhoyazan M A Azazi
- Wellcome Trust-MRC Cambridge Stem Cell Institute, Cambridge, United Kingdom
- Department of Haematology, University of Cambridge, Cambridge, United Kingdom
| | - Sarah J Horton
- Wellcome Trust-MRC Cambridge Stem Cell Institute, Cambridge, United Kingdom
- Department of Haematology, University of Cambridge, Cambridge, United Kingdom
| | - Cecile K Lopez
- Wellcome Trust-MRC Cambridge Stem Cell Institute, Cambridge, United Kingdom
- Department of Haematology, University of Cambridge, Cambridge, United Kingdom
| | - Shubha Anand
- Cancer Molecular Diagnostics Laboratory, Cancer Research UK Cambridge Centre, Cambridge, United Kingdom
| | - Anne-Sophie Bach
- Wellcome Trust-MRC Cambridge Stem Cell Institute, Cambridge, United Kingdom
- Department of Haematology, University of Cambridge, Cambridge, United Kingdom
| | - Frances Stedham
- Wellcome Trust-MRC Cambridge Stem Cell Institute, Cambridge, United Kingdom
- Department of Haematology, University of Cambridge, Cambridge, United Kingdom
| | - Robin Antrobus
- Cambridge Institute for Medical Research, University of Cambridge, Cambridge, United Kingdom
| | - Jack W Houghton
- Cambridge Institute for Medical Research, University of Cambridge, Cambridge, United Kingdom
| | - George S Vassiliou
- Wellcome Trust-MRC Cambridge Stem Cell Institute, Cambridge, United Kingdom
- Department of Haematology, University of Cambridge, Cambridge, United Kingdom
- Cambridge University Hospitals NHS Foundation Trust, Cambridge, United Kingdom
| | - Daniel Sasca
- Department of Hematology, Oncology and Pneumology, University Medical Center Mainz, Mainz, Germany
| | - Haiyang Yun
- Department of Medicine V, Hematology, Oncology and Rheumatology, University of Heidelberg, Heidelberg, Germany
| | - Anthony D Whetton
- School of Veterinary Medicine, School of Biosciences and Medicine, University of Surrey, Guildford, Surrey, United Kingdom
| | - Brian J P Huntly
- Wellcome Trust-MRC Cambridge Stem Cell Institute, Cambridge, United Kingdom
- Department of Haematology, University of Cambridge, Cambridge, United Kingdom
- Cambridge Institute for Medical Research, University of Cambridge, Cambridge, United Kingdom
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12
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Bouligny IM, Maher KR, Grant S. Mechanisms of myeloid leukemogenesis: Current perspectives and therapeutic objectives. Blood Rev 2023; 57:100996. [PMID: 35989139 PMCID: PMC10693933 DOI: 10.1016/j.blre.2022.100996] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Revised: 07/26/2022] [Accepted: 07/27/2022] [Indexed: 01/28/2023]
Abstract
Acute myeloid leukemia (AML) is a heterogeneous hematopoietic neoplasm which results in clonal proliferation of abnormally differentiated hematopoietic cells. In this review, mechanisms contributing to myeloid leukemogenesis are summarized, highlighting aberrations of epigenetics, transcription factors, signal transduction, cell cycling, and the bone marrow microenvironment. The mechanisms contributing to AML are detailed to spotlight recent findings that convey clinical impact. The applications of current and prospective therapeutic targets are accentuated in addition to reviews of treatment paradigms stratified for each characteristic molecular lesion - with a focus on exploring novel treatment approaches and combinations to improve outcomes in AML.
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Affiliation(s)
- Ian M Bouligny
- Massey Cancer Center, Virginia Commonwealth University, Richmond, VA, USA.
| | - Keri R Maher
- Massey Cancer Center, Virginia Commonwealth University, Richmond, VA, USA.
| | - Steven Grant
- Massey Cancer Center, Virginia Commonwealth University, Richmond, VA, USA.
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13
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Aryal S, Zhang Y, Wren S, Li C, Lu R. Molecular regulators of HOXA9 in acute myeloid leukemia. FEBS J 2023; 290:321-339. [PMID: 34743404 DOI: 10.1111/febs.16268] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Revised: 09/30/2021] [Accepted: 11/05/2021] [Indexed: 02/05/2023]
Abstract
Dysregulation of the oncogenic transcription factor HOXA9 is a prominent feature for most aggressive acute myeloid leukemia cases and a strong indicator of poor prognosis in patients. Leukemia subtypes with hallmark overexpression of HOXA9 include those carrying MLL gene rearrangements, NPM1c mutations, and other genetic alternations. A growing body of evidence indicates that HOXA9 dysregulation is both sufficient and necessary for leukemic transformation. The HOXA9 mRNA and protein regulation includes multilayered controls by transcription factors (such as CDX2/4 and USF2/1), epigenetic factors (such as MLL-menin-LEDGF, DOT1L, ENL, HBO1, NPM1c-XPO1, and polycomb proteins), microRNAs (such as miR-126 and miR-196b), long noncoding RNAs (such as HOTTIP), three-dimensional chromatin interactions, and post-translational protein modifications. Recently, insights into the dynamic regulation of HOXA9 have led to an advanced understanding of the HOXA9 regulome and provided new cancer therapeutic opportunities, including developing inhibitors targeting DOT1L, menin, and ENL proteins. This review summarizes recent advances in understanding the molecular mechanisms controlling HOXA9 regulation and the pharmacological approaches that target HOXA9 regulators to treat HOXA9-driven acute myeloid leukemia.
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Affiliation(s)
- Sajesan Aryal
- Division of Hematology and Oncology & O'Neal Comprehensive Cancer Center, University of Alabama at Birmingham, AL, USA
| | - Yang Zhang
- Department of Tumor Cell Biology & Cancer Biology Program/Comprehensive Cancer Center, St. Jude Children's Research Hospital, Memphis, TN, USA
| | - Spencer Wren
- Division of Hematology and Oncology & O'Neal Comprehensive Cancer Center, University of Alabama at Birmingham, AL, USA
| | - Chunliang Li
- Department of Tumor Cell Biology & Cancer Biology Program/Comprehensive Cancer Center, St. Jude Children's Research Hospital, Memphis, TN, USA
| | - Rui Lu
- Division of Hematology and Oncology & O'Neal Comprehensive Cancer Center, University of Alabama at Birmingham, AL, USA
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14
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Lieske A, Agyeman-Duah E, Selich A, Dörpmund N, Talbot SR, Schambach A, Maetzig T. A pro B cell population forms the apex of the leukemic hierarchy in Hoxa9/Meis1-dependent AML. Leukemia 2023; 37:79-90. [PMID: 36517672 PMCID: PMC9883166 DOI: 10.1038/s41375-022-01775-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Revised: 11/21/2022] [Accepted: 11/23/2022] [Indexed: 12/15/2022]
Abstract
Relapse is a major challenge to therapeutic success in acute myeloid leukemia (AML) and can be partly associated with heterogeneous leukemic stem cell (LSC) properties. In the murine Hoxa9/Meis1-dependent (H9M) AML model, LSC potential lies in three defined immunophenotypes, including Lin-cKit+ progenitor cells (Lin-), Gr1+CD11b+cKit+ myeloid cells, and lymphoid cells (Lym+). Previous reports demonstrated their interconversion and distinct drug sensitivities. In contrast, we here show that H9M AML is hierarchically organized. We, therefore, tracked the developmental potential of LSC phenotypes. This unexpectedly revealed a substantial fraction of Lin- LSCs that failed to regenerate Lym+ LSCs, and that harbored reduced leukemogenic potential. However, Lin- LSCs capable of producing Lym+ LSCs as well as Lym+ LSCs triggered rapid disease development suggestive of their high relapse-driving potential. Transcriptional analyses revealed that B lymphoid master regulators, including Sox4 and Bach2, correlated with Lym+ LSC development and presumably aggressive disease. Lentiviral overexpression of Sox4 and Bach2 induced dedifferentiation of H9M cells towards a lineage-negative state in vitro as the first step of lineage conversion. This work suggests that the potency to initiate a partial B lymphoid primed transcriptional program as present in infant AML correlates with aggressive disease and governs the H9M LSC hierarchy.
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Affiliation(s)
- Anna Lieske
- Institute of Experimental Hematology, Hannover Medical School, Hannover, Germany
- Pediatric Hematology and Oncology, Hannover Medical School, Hannover, Germany
| | - Eric Agyeman-Duah
- Pediatric Hematology and Oncology, Hannover Medical School, Hannover, Germany
| | - Anton Selich
- Institute of Experimental Hematology, Hannover Medical School, Hannover, Germany
| | - Nicole Dörpmund
- Pediatric Hematology and Oncology, Hannover Medical School, Hannover, Germany
| | - Steven R Talbot
- Institute for Laboratory Animal Science, Hannover Medical School, Hannover, Germany
| | - Axel Schambach
- Institute of Experimental Hematology, Hannover Medical School, Hannover, Germany
- Division of Hematology/Oncology, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA
| | - Tobias Maetzig
- Institute of Experimental Hematology, Hannover Medical School, Hannover, Germany.
- Pediatric Hematology and Oncology, Hannover Medical School, Hannover, Germany.
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15
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Abstract
Hox genes encode evolutionarily conserved transcription factors that are essential for the proper development of bilaterian organisms. Hox genes are unique because they are spatially and temporally regulated during development in a manner that is dictated by their tightly linked genomic organization. Although their genetic function during embryonic development has been interrogated, less is known about how these transcription factors regulate downstream genes to direct morphogenetic events. Moreover, the continued expression and function of Hox genes at postnatal and adult stages highlights crucial roles for these genes throughout the life of an organism. Here, we provide an overview of Hox genes, highlighting their evolutionary history, their unique genomic organization and how this impacts the regulation of their expression, what is known about their protein structure, and their deployment in development and beyond.
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Affiliation(s)
- Katharine A. Hubert
- Program in Genetics, University of Wisconsin School of Medicine and Public Health, Madison, WI 53705, USA
- Department of Cell and Regenerative Biology, University of Wisconsin School of Medicine and Public Health, Madison, WI 53705, USA
| | - Deneen M. Wellik
- Department of Cell and Regenerative Biology, University of Wisconsin School of Medicine and Public Health, Madison, WI 53705, USA
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16
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Lail SS, Arnold CR, de Almeida LGN, McKenna N, Chiriboga JA, Dufour A, Warren AL, Yates RM. Hox-driven conditional immortalization of myeloid and lymphoid progenitors: Uses, advantages, and future potential. Traffic 2022; 23:538-553. [PMID: 36117140 DOI: 10.1111/tra.12869] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2022] [Revised: 08/28/2022] [Accepted: 09/12/2022] [Indexed: 01/20/2023]
Abstract
Those who study macrophage biology struggle with the decision whether to utilize primary macrophages derived directly from mice or opt for the convenience and genetic tractability of immortalized macrophage-like cell lines in in vitro studies. Particularly when it comes to studying phagocytosis and phagosomal maturation-a signature cellular process of the macrophage-many commonly used cell lines are not representative of what occurs in primary macrophages. A system developed by Mark Kamps' group, that utilizes conditionally constitutive activity of Hox transcription factors (Hoxb8 and Hoxa9) to immortalize differentiation-competent myeloid cell progenitors of mice, offers an alternative to the macrophage/macrophage-like dichotomy. In this resource, we will review the use of Hoxb8 and Hoxa9 as hematopoietic regulators to conditionally immortalize murine hematopoietic progenitor cells which retain their ability to differentiate into many functional immune cell types including macrophages, neutrophils, basophils, osteoclasts, eosinophils, dendritic cells, as well as limited potential for the generation of lymphocytes. We further demonstrate that the use of macrophages derived from Hoxb8/Hoxa9 immortalized progenitors and their similarities to bone marrow-derived macrophages. To supplement the existing data, mass spectrometry-based proteomics, flow cytometry, cytology, and in vitro phagosomal assays were conducted on macrophages derived from Hoxb8 immortalized progenitors and compared to bone marrow-derived macrophages and the macrophage-like cell line J774. We additionally propose the use of a standardized nomenclature to describe cells derived from the Hoxb8/Hoxa9 system in anticipation of their expanded use in the study of leukocyte cell biology.
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Affiliation(s)
- Shranjit S Lail
- Department of Medical Science, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Corey R Arnold
- Department of Biochemistry and Molecular Biology, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Luiz G N de Almeida
- Department of Biochemistry and Molecular Biology, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Neil McKenna
- Department of Comparative Biology and Experimental Medicine, Faculty of Veterinary Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Jose A Chiriboga
- Department of Veterinary Clinical and Diagnostic Sciences, Faculty of Veterinary Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Antoine Dufour
- Department of Biochemistry and Molecular Biology, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada.,Snyder Institute of Chronic Disease, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Amy L Warren
- Department of Veterinary Clinical and Diagnostic Sciences, Faculty of Veterinary Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Robin Michael Yates
- Department of Biochemistry and Molecular Biology, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada.,Department of Comparative Biology and Experimental Medicine, Faculty of Veterinary Medicine, University of Calgary, Calgary, Alberta, Canada.,Snyder Institute of Chronic Disease, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
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17
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Wang W, Li H, Huang M, Wang X, Li W, Qian X, Jing L. Hoxa9/ meis1-transgenic zebrafish develops acute myeloid leukaemia-like disease with rapid onset and high penetrance. Open Biol 2022; 12:220172. [PMID: 36285442 PMCID: PMC9597180 DOI: 10.1098/rsob.220172] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
HOXA9 and MEIS1 are co-expressed in over 50% of acute myeloid leukaemia (AML) and play essential roles in leukaemogenesis, but the mechanisms involved are poorly understood. Diverse animal models offer valuable tools to recapitulate different aspects of AML and link in vitro studies to clinical trials. We generated a double transgenic zebrafish that enables hoxa9 overexpression in blood cells under the draculin (drl) regulatory element and an inducible expression of meis1 through a heat shock promoter. After induction, Tg(drl:hoxa9;hsp70:meis1) embryos developed a preleukaemic state with reduced myeloid and erythroid differentiation coupled with the poor production of haematopoietic stem cells and myeloid progenitors. Importantly, most adult Tg(drl:hoxa9;hsp70:meis1) fish at 3 months old showed abundant accumulations of immature myeloid precursors, interrupted differentiation and anaemia in the kidney marrow, and infiltration of myeloid precursors in peripheral blood, resembling human AML. Genome-wide transcriptional analysis also confirmed AML transformation by the transgene. Moreover, the dihydroorotate dehydrogenase (DHODH) inhibitor that reduces leukaemogenesis in mammals effectively restored haematopoiesis in Tg(drl:hoxa9;hsp70:meis1) embryos and improved their late survival. Thus, Tg(drl:hoxa9;hsp70:meis1) zebrafish is a rapid-onset high-penetrance AML-like disease model, which provides a novel tool to harness the unique advantages of zebrafish for mechanistic studies and drug screening against HOXA9/MEIS1 overexpressed high-risk AML.
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Affiliation(s)
- Wei Wang
- Engineering Research Center of Cell and Therapeutic Antibody, Ministry of Education, Pharm-X Center, School of Pharmacy, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China
| | - Hongji Li
- Engineering Research Center of Cell and Therapeutic Antibody, Ministry of Education, Pharm-X Center, School of Pharmacy, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China
| | - Mengling Huang
- Engineering Research Center of Cell and Therapeutic Antibody, Ministry of Education, Pharm-X Center, School of Pharmacy, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China
| | - Xue Wang
- Engineering Research Center of Cell and Therapeutic Antibody, Ministry of Education, Pharm-X Center, School of Pharmacy, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China
| | - Wei Li
- Core facility and technical service center, School of Pharmacy, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China
| | - Xiaoqing Qian
- School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China
| | - Lili Jing
- Engineering Research Center of Cell and Therapeutic Antibody, Ministry of Education, Pharm-X Center, School of Pharmacy, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China
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18
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Zhang HB, Sun ZK, Zhong FM, Yao FY, Liu J, Zhang J, Zhang N, Lin J, Li SQ, Li MY, Jiang JY, Cheng Y, Xu S, Cheng XX, Huang B, Wang XZ. A novel fatty acid metabolism-related signature identifies features of the tumor microenvironment and predicts clinical outcome in acute myeloid leukemia. Lipids Health Dis 2022; 21:79. [PMID: 36002858 PMCID: PMC9404605 DOI: 10.1186/s12944-022-01687-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Accepted: 08/08/2022] [Indexed: 11/16/2022] Open
Abstract
Background Acute myeloid leukemia (AML) is the most common malignancy of the hematological system, and there are currently a number of studies regarding abnormal alterations in energy metabolism, but fewer reports related to fatty acid metabolism (FAM) in AML. We therefore analyze the association of FAM and AML tumor development to explore targets for clinical prognosis prediction and identify those with potential therapeutic value. Methods The identification of AML patients with different fatty acid metabolism characteristics was based on a consensus clustering algorithm. The CIBERSORT algorithm was used to calculate the proportion of infiltrating immune cells. We used Cox regression analysis and least absolute shrinkage and selection operator (LASSO) regression analysis to construct a signature for predicting the prognosis of AML patients. The Genomics of Drug Sensitivity in Cancer database was used to predict the sensitivity of patient samples in high- and low-risk score groups to different chemotherapy drugs. Results The consensus clustering approach identified three molecular subtypes of FAM that exhibited significant differences in genomic features such as immunity, metabolism, and inflammation, as well as patient prognosis. The risk-score model we constructed accurately predicted patient outcomes, with area under the receiver operating characteristic curve values of 0.870, 0.878, and 0.950 at 1, 3, and 5 years, respectively. The validation cohort also confirmed the prognostic evaluation performance of the risk score. In addition, higher risk scores were associated with stronger fatty acid metabolisms, significantly higher expression levels of immune checkpoints, and significantly increased infiltration of immunosuppressive cells. Immune functions, such as inflammation promotion, para-inflammation, and type I/II interferon responses, were also significantly activated. These results demonstrated that immunotherapy targeting immune checkpoints and immunosuppressive cells, such as myeloid-derived suppressor cells (MDSCs) and M2 macrophages, are more suitable for patients with high-risk scores. Finally, the prediction results of chemotherapeutic drugs showed that samples in the high-risk score group had greater treatment sensitivity to four chemotherapy drugs in vitro. Conclusions The analysis of the molecular patterns of FAM effectively predicted patient prognosis and revealed various tumor microenvironment (TME) characteristics. Supplementary Information The online version contains supplementary material available at 10.1186/s12944-022-01687-x.
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Affiliation(s)
- Hai-Bin Zhang
- Jiangxi Province Key Laboratory of Laboratory Medicine, Jiangxi Provincial Clinical Research Center for Laboratory Medicine, Department of Clinical Laboratory, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - Zhuo-Kai Sun
- Queen Mary School, Nanchang University, Nanchang, Jiangxi, China
| | - Fang-Min Zhong
- Jiangxi Province Key Laboratory of Laboratory Medicine, Jiangxi Provincial Clinical Research Center for Laboratory Medicine, Department of Clinical Laboratory, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China.,School of Public Health, Nanchang University, Nanchang, Jiangxi, China
| | - Fang-Yi Yao
- Jiangxi Province Key Laboratory of Laboratory Medicine, Jiangxi Provincial Clinical Research Center for Laboratory Medicine, Department of Clinical Laboratory, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - Jing Liu
- Jiangxi Province Key Laboratory of Laboratory Medicine, Jiangxi Provincial Clinical Research Center for Laboratory Medicine, Department of Clinical Laboratory, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - Jing Zhang
- Jiangxi Province Key Laboratory of Laboratory Medicine, Jiangxi Provincial Clinical Research Center for Laboratory Medicine, Department of Clinical Laboratory, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - Nan Zhang
- Jiangxi Province Key Laboratory of Laboratory Medicine, Jiangxi Provincial Clinical Research Center for Laboratory Medicine, Department of Clinical Laboratory, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - Jin Lin
- Jiangxi Province Key Laboratory of Laboratory Medicine, Jiangxi Provincial Clinical Research Center for Laboratory Medicine, Department of Clinical Laboratory, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - Shu-Qi Li
- Jiangxi Province Key Laboratory of Laboratory Medicine, Jiangxi Provincial Clinical Research Center for Laboratory Medicine, Department of Clinical Laboratory, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - Mei-Yong Li
- Jiangxi Province Key Laboratory of Laboratory Medicine, Jiangxi Provincial Clinical Research Center for Laboratory Medicine, Department of Clinical Laboratory, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - Jun-Yao Jiang
- Jiangxi Province Key Laboratory of Laboratory Medicine, Jiangxi Provincial Clinical Research Center for Laboratory Medicine, Department of Clinical Laboratory, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - Ying Cheng
- Jiangxi Province Key Laboratory of Laboratory Medicine, Jiangxi Provincial Clinical Research Center for Laboratory Medicine, Department of Clinical Laboratory, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China.,School of Public Health, Nanchang University, Nanchang, Jiangxi, China
| | - Shuai Xu
- Jiangxi Province Key Laboratory of Laboratory Medicine, Jiangxi Provincial Clinical Research Center for Laboratory Medicine, Department of Clinical Laboratory, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China.,School of Public Health, Nanchang University, Nanchang, Jiangxi, China
| | - Xue-Xin Cheng
- Jiangxi Province Key Laboratory of Laboratory Medicine, Jiangxi Provincial Clinical Research Center for Laboratory Medicine, Department of Clinical Laboratory, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - Bo Huang
- Jiangxi Province Key Laboratory of Laboratory Medicine, Jiangxi Provincial Clinical Research Center for Laboratory Medicine, Department of Clinical Laboratory, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China.
| | - Xiao-Zhong Wang
- Jiangxi Province Key Laboratory of Laboratory Medicine, Jiangxi Provincial Clinical Research Center for Laboratory Medicine, Department of Clinical Laboratory, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China. .,School of Public Health, Nanchang University, Nanchang, Jiangxi, China.
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19
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Yuen K, Liu Y, Zhou Y, Wang Y, Zhou D, Fang J, Xu L. Mutational landscape and clinical outcome of pediatric acute myeloid leukemia with 11q23/KMT2A rearrangements. Cancer Med 2022; 12:1418-1430. [PMID: 35833755 PMCID: PMC9883550 DOI: 10.1002/cam4.5026] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Revised: 05/25/2022] [Accepted: 06/27/2022] [Indexed: 02/02/2023] Open
Abstract
BACKGROUND Alterations of 11q23/KMT2A are the most prevalent cytogenetic abnormalities in acute myeloid leukemia (AML) and the prognostic significance of 11q23/KMT2A-rearranged AML based on various translocation partners varies among different studies. However, few studies evaluated the molecular characteristics of 11q23/KMT2A-rearranged pediatric AML. We aim to analyze the mutational landscape of 11q23/KMT2A-rearranged AML and assess their prognostic value in outcomes. METHODS The mutational landscape and clinical prognosis of 105 children with 11q23/KMT2A-rearranged AML in comparison with 277 children with non-11q23/KMT2A-rearranged AML were analyzed using publicly accessible next-generation sequencing data from Therapeutically Applicable Research to Generate Effective Treatments (TARGET) dataset. RESULTS Pediatric AML patients with 11q23/KMT2A-rearrangements harbored a low number of mutations (Median, 1 mutation/patient, range, 1-22), 58% of which involved in RAS pathway mutations (KRAS, NRAS, and PTPN11) and 10.5% of which comprised of SETD2 mutations. Compared with non-11q23/KMT2A-rearranged AML, the incidence of KRAS (32.4% vs. 10.1%, P〈0.001) and SETD2 (10.5% vs. 1.4%, P=0.001) gene mutations in 11q23/KMT2A-rearranged AML was significantly higher. Both KRAS and SETD2 mutations occurred more often in t(10;11)(p12;q23). KRAS mutations were correlated with worse 5-year event-free survival [EFS] (Plog-rank = 0.001) and 5-year overall survival [OS] (Plog-rank = 0.009) and the presence of SETD2 mutations increases the 5-year relapse rate (PGray = 0.004). Multivariate analyses confirmed KRAS mutations in 11q23/KMT2A-rearranged AML as an independent predictor for poor EFS (hazard ratio [HR] = 2.10, P=0.05) and OS (HR = 2.39, P=0.054). CONCLUSION Our findings show that pediatric patients with 11q23/KMT2A rearrangements have characteristic mutation patterns and varying clinical outcomes depending on different translocation partners, which could be utilized to develop more accurate risk stratification and tailored therapies.
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Affiliation(s)
- Ka‐Yuk Yuen
- Department of PediatricsSun Yat‐Sen Memorial Hospital, Sun Yat‐Sen UniversityGuangzhouGuangdong ProvinceChina,Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene RegulationSun Yat‐Sen Memorial Hospital, Sun Yat‐Sen UniversityGuangzhouGuangdong ProvinceChina
| | - Yong Liu
- Department of PediatricsSun Yat‐Sen Memorial Hospital, Sun Yat‐Sen UniversityGuangzhouGuangdong ProvinceChina,Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene RegulationSun Yat‐Sen Memorial Hospital, Sun Yat‐Sen UniversityGuangzhouGuangdong ProvinceChina
| | - Yong‐Zhuo Zhou
- Department of Clinical LaboratorySun Yat‐Sen Memorial Hospital, Sun Yat‐Sen UniversityGuangzhouGuangdong ProvinceChina
| | - Yin Wang
- Department of PediatricsSun Yat‐Sen Memorial Hospital, Sun Yat‐Sen UniversityGuangzhouGuangdong ProvinceChina,Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene RegulationSun Yat‐Sen Memorial Hospital, Sun Yat‐Sen UniversityGuangzhouGuangdong ProvinceChina
| | - Dun‐Hua Zhou
- Department of PediatricsSun Yat‐Sen Memorial Hospital, Sun Yat‐Sen UniversityGuangzhouGuangdong ProvinceChina,Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene RegulationSun Yat‐Sen Memorial Hospital, Sun Yat‐Sen UniversityGuangzhouGuangdong ProvinceChina
| | - Jian‐Pei Fang
- Department of PediatricsSun Yat‐Sen Memorial Hospital, Sun Yat‐Sen UniversityGuangzhouGuangdong ProvinceChina,Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene RegulationSun Yat‐Sen Memorial Hospital, Sun Yat‐Sen UniversityGuangzhouGuangdong ProvinceChina
| | - Lu‐Hong Xu
- Department of PediatricsSun Yat‐Sen Memorial Hospital, Sun Yat‐Sen UniversityGuangzhouGuangdong ProvinceChina,Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene RegulationSun Yat‐Sen Memorial Hospital, Sun Yat‐Sen UniversityGuangzhouGuangdong ProvinceChina
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20
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In vivo genome-wide CRISPR screening in murine acute myeloid leukemia uncovers microenvironmental dependencies. Blood Adv 2022; 6:5072-5084. [PMID: 35793392 PMCID: PMC9631646 DOI: 10.1182/bloodadvances.2022007250] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2022] [Accepted: 06/26/2022] [Indexed: 11/20/2022] Open
Abstract
In vivo CRISPR screens in AML define key interactors of the microenvironment, including integrins, immune modulators, and glycosylation. Eight in vivo–specific hits are recurrently associated with adverse prognosis: BTBD6, FERMT3, ILK, SLC19A1, TAP2, TLN1, TPST2, and TRMT12.
Genome-wide CRISPR screens have been extremely useful in identifying therapeutic targets in diverse cancers by defining genes that are essential for malignant growth. However, most CRISPR screens were performed in vitro and thus cannot identify genes that are essential for interactions with the microenvironment in vivo. Here, we report genome-wide CRISPR screens in 2 in vivo murine models of acute myeloid leukemia (AML) driven by the KMT2A/MLLT3 fusion or by the constitutive coexpression of Hoxa9 and Meis1. Secondary validation using a focused library identified 72 genes specifically essential for leukemic growth in vivo, including components of the major histocompatibility complex class I complex, Cd47, complement receptor Cr1l, and the β-4-galactosylation pathway. Importantly, several of these in vivo–specific hits have a prognostic effect or are inferred to be master regulators of protein activity in human AML cases. For instance, we identified Fermt3, a master regulator of integrin signaling, as having in vivo–specific dependency with high prognostic relevance. Overall, we show an experimental and computational pipeline for genome-wide functional screens in vivo in AML and provide a genome-wide resource of essential drivers of leukemic growth in vivo.
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21
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Salame N, Fooks K, El-Hachem N, Bikorimana JP, Mercier FE, Rafei M. Recent Advances in Cancer Drug Discovery Through the Use of Phenotypic Reporter Systems, Connectivity Mapping, and Pooled CRISPR Screening. Front Pharmacol 2022; 13:852143. [PMID: 35795568 PMCID: PMC9250974 DOI: 10.3389/fphar.2022.852143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2022] [Accepted: 05/31/2022] [Indexed: 11/13/2022] Open
Abstract
Multi-omic approaches offer an unprecedented overview of the development, plasticity, and resistance of cancer. However, the translation from anti-cancer compounds identified in vitro to clinically active drugs have a notoriously low success rate. Here, we review how technical advances in cell culture, robotics, computational biology, and development of reporter systems have transformed drug discovery, enabling screening approaches tailored to clinically relevant functional readouts (e.g., bypassing drug resistance). Illustrating with selected examples of “success stories,” we describe the process of phenotype-based high-throughput drug screening to target malignant cells or the immune system. Second, we describe computational approaches that link transcriptomic profiling of cancers with existing pharmaceutical compounds to accelerate drug repurposing. Finally, we review how CRISPR-based screening can be applied for the discovery of mechanisms of drug resistance and sensitization. Overall, we explore how the complementary strengths of each of these approaches allow them to transform the paradigm of pre-clinical drug development.
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Affiliation(s)
- Natasha Salame
- Department of Biomedical Sciences, Université de Montréal, Montreal, QC, Canada
| | - Katharine Fooks
- Lady Davis Institute for Medical Research, Montreal, QC, Canada
- Department of Medicine, McGill University, Montreal, QC, Canada
| | - Nehme El-Hachem
- Department of Pharmacology and Physiology, Université de Montréal, Montreal, QC, Canada
| | - Jean-Pierre Bikorimana
- Department of Microbiology, Infectious Diseases and Immunology, Université de Montréal, Montreal, QC, Canada
| | - François E. Mercier
- Lady Davis Institute for Medical Research, Montreal, QC, Canada
- Department of Medicine, McGill University, Montreal, QC, Canada
- *Correspondence: François E. Mercier, ; Moutih Rafei,
| | - Moutih Rafei
- Department of Pharmacology and Physiology, Université de Montréal, Montreal, QC, Canada
- Department of Microbiology, Infectious Diseases and Immunology, Université de Montréal, Montreal, QC, Canada
- Molecular Biology Program, Université de Montréal, Montreal, QC, Canada
- *Correspondence: François E. Mercier, ; Moutih Rafei,
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22
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Mann Z, Sengar M, Verma YK, Rajalingam R, Raghav PK. Hematopoietic Stem Cell Factors: Their Functional Role in Self-Renewal and Clinical Aspects. Front Cell Dev Biol 2022; 10:664261. [PMID: 35399522 PMCID: PMC8987924 DOI: 10.3389/fcell.2022.664261] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Accepted: 02/14/2022] [Indexed: 01/29/2023] Open
Abstract
Hematopoietic stem cells (HSCs) possess two important properties such as self-renewal and differentiation. These properties of HSCs are maintained through hematopoiesis. This process gives rise to two subpopulations, long-term and short-term HSCs, which have become a popular convention for treating various hematological disorders. The clinical application of HSCs is bone marrow transplant in patients with aplastic anemia, congenital neutropenia, sickle cell anemia, thalassemia, or replacement of damaged bone marrow in case of chemotherapy. The self-renewal attribute of HSCs ensures long-term hematopoiesis post-transplantation. However, HSCs need to be infused in large numbers to reach their target site and meet the demands since they lose their self-renewal capacity after a few passages. Therefore, a more in-depth understanding of ex vivo HSCs expansion needs to be developed to delineate ways to enhance the self-renewability of isolated HSCs. The multifaceted self-renewal process is regulated by factors, including transcription factors, miRNAs, and the bone marrow niche. A developed classical hierarchical model that outlines the hematopoiesis in a lineage-specific manner through in vivo fate mapping, barcoding, and determination of self-renewal regulatory factors are still to be explored in more detail. Thus, an in-depth study of the self-renewal property of HSCs is essentially required to be utilized for ex vivo expansion. This review primarily focuses on the Hematopoietic stem cell self-renewal pathway and evaluates the regulatory molecular factors involved in considering a targeted clinical approach in numerous malignancies and outlining gaps in the current knowledge.
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Affiliation(s)
- Zoya Mann
- Independent Researcher, New Delhi, India
| | - Manisha Sengar
- Department of Zoology, Deshbandhu College, University of Delhi, Delhi, India
| | - Yogesh Kumar Verma
- Stem Cell and Gene Therapy Research Group, Institute of Nuclear Medicine and Allied Sciences (INMAS), Delhi, India
| | - Raja Rajalingam
- Immunogenetics and Transplantation Laboratory, Department of Surgery, University of California San Francisco, San Francisco, CA, United States
| | - Pawan Kumar Raghav
- Immunogenetics and Transplantation Laboratory, Department of Surgery, University of California San Francisco, San Francisco, CA, United States
- *Correspondence: Pawan Kumar Raghav, ,
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23
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van Noorden CJ, Breznik B, Novak M, van Dijck AJ, Tanan S, Vittori M, Bogataj U, Bakker N, Khoury JD, Molenaar RJ, Hira VV. Cell Biology Meets Cell Metabolism: Energy Production Is Similar in Stem Cells and in Cancer Stem Cells in Brain and Bone Marrow. J Histochem Cytochem 2022; 70:29-51. [PMID: 34714696 PMCID: PMC8721571 DOI: 10.1369/00221554211054585] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Energy production by means of ATP synthesis in cancer cells has been investigated frequently as a potential therapeutic target in this century. Both (an)aerobic glycolysis and oxidative phosphorylation (OXPHOS) have been studied. Here, we review recent literature on energy production in glioblastoma stem cells (GSCs) and leukemic stem cells (LSCs) versus their normal counterparts, neural stem cells (NSCs) and hematopoietic stem cells (HSCs), respectively. These two cancer stem cell types were compared because their niches in glioblastoma tumors and in bone marrow are similar. In this study, it became apparent that (1) ATP is produced in NSCs and HSCs by anaerobic glycolysis, whereas fatty acid oxidation (FAO) is essential for their stem cell fate and (2) ATP is produced in GSCs and LSCs by OXPHOS despite the hypoxic conditions in their niches with FAO and amino acids providing its substrate. These metabolic processes appeared to be under tight control of cellular regulation mechanisms which are discussed in depth. However, our conclusion is that systemic therapeutic targeting of ATP production via glycolysis or OXPHOS is not an attractive option because of its unwanted side effects in cancer patients.
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Affiliation(s)
| | - Barbara Breznik
- Department of Genetic Toxicology and Cancer Biology, National Institute of Biology, Ljubljana, Slovenia
| | - Metka Novak
- Department of Genetic Toxicology and Cancer Biology, National Institute of Biology, Ljubljana, Slovenia
| | | | | | - Miloš Vittori
- Amsterdam UMC Location Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands; Department of Biology, Biotechnical Faculty, University of Ljubljana, Ljubljana, Slovenia
| | - Urban Bogataj
- Amsterdam UMC Location Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands; Department of Biology, Biotechnical Faculty, University of Ljubljana, Ljubljana, Slovenia
| | | | - Joseph D. Khoury
- Department of Hematopathology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Remco J. Molenaar
- Department of Genetic Toxicology and Cancer Biology, National Institute of Biology, Ljubljana, Slovenia,Department of Medical Oncology
| | - Vashendriya V.V. Hira
- Vashendriya V.V. Hira, Department of Genetic Toxicology and Cancer Biology, National Institute of Biology, Večna Pot 111, 1000 Ljubljana, Slovenia. E-mail:
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24
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Meriç N, Kocabaş F. The Historical Relationship Between Meis1 and Leukemia. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2022; 1387:127-144. [DOI: 10.1007/5584_2021_705] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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25
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Zhang J, Li Q, Lu Y, Guan X, Liu J, Xu N, Cai C, Li X, Nan B, Liu J, Wang Y. Astaxanthin overproduction of Phaffia rhodozyma PR106 under titanium dioxide stress by transcriptomics and metabolic regulation analysis. BIORESOURCE TECHNOLOGY 2021; 342:125957. [PMID: 34555753 DOI: 10.1016/j.biortech.2021.125957] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Revised: 09/10/2021] [Accepted: 09/12/2021] [Indexed: 06/13/2023]
Abstract
In this study, astaxanthin yield of Phaffia rhodozyma PR106 increased significantly under titanium dioxide (TiO2) stress, and the yield of lycopene and β-carotene also increased significantly, as well as the yield of violaxanthin and lutein significantly decreased; in addition, TiO2 stress promoted cell division and changed cell morphology of PR106. Then, the mechanism of increasing astaxanthin yield was studied by transcriptomics and related metabolic regulation. The results showed that astaxanthin accumulation in PR106 was not directly related to mRNA transcription and post-translational modifications regulation under TiO2 stress; TiO2 stress accelerated glucose uptake of yeast, promoted reuse of ethanol, and increased the formation of acetyl-CoA and ATP. The more carbon flux was shifted to astaxanthin synthesis pathway and weakened carotenoids accumulation in astaxanthin branch pathway to improve the astaxanthin production of PR106. The metabolism regulation of ROS could continue in the PR106 strain.
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Affiliation(s)
- Jing Zhang
- College of Food Science and Engineering, Jilin Agricultural University, Changchun, China; Jilin Province Innovation Center for Food Biological Manufacture, Jilin Agricultural University, Changchun, China
| | - Qingru Li
- College of Food Science and Engineering, Jilin Agricultural University, Changchun, China; Jilin Province Innovation Center for Food Biological Manufacture, Jilin Agricultural University, Changchun, China
| | - Yanhong Lu
- College of Food Science and Engineering, Jilin Agricultural University, Changchun, China; Jilin Province Innovation Center for Food Biological Manufacture, Jilin Agricultural University, Changchun, China
| | - Xiaoyu Guan
- College of Food Science and Engineering, Jilin Agricultural University, Changchun, China; Jilin Province Innovation Center for Food Biological Manufacture, Jilin Agricultural University, Changchun, China
| | - Jiahuan Liu
- College of Food Science and Engineering, Jilin Agricultural University, Changchun, China; Jilin Province Innovation Center for Food Biological Manufacture, Jilin Agricultural University, Changchun, China
| | - Na Xu
- College of Food Science and Engineering, Jilin Agricultural University, Changchun, China; Jilin Province Innovation Center for Food Biological Manufacture, Jilin Agricultural University, Changchun, China
| | - Chunyu Cai
- College of Food Science and Engineering, Jilin Agricultural University, Changchun, China; Jilin Province Innovation Center for Food Biological Manufacture, Jilin Agricultural University, Changchun, China
| | - Xia Li
- College of Food Science and Engineering, Jilin Agricultural University, Changchun, China; Jilin Province Innovation Center for Food Biological Manufacture, Jilin Agricultural University, Changchun, China
| | - Bo Nan
- College of Food Science and Engineering, Jilin Agricultural University, Changchun, China; Jilin Province Innovation Center for Food Biological Manufacture, Jilin Agricultural University, Changchun, China
| | - Jingsheng Liu
- College of Food Science and Engineering, Jilin Agricultural University, Changchun, China; National Engineering Laboratory for Wheat and Corn Deep Processing, Changchun, China
| | - Yuhua Wang
- College of Food Science and Engineering, Jilin Agricultural University, Changchun, China; Jilin Province Innovation Center for Food Biological Manufacture, Jilin Agricultural University, Changchun, China; National Engineering Laboratory for Wheat and Corn Deep Processing, Changchun, China.
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26
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Torres-Montaner A. The telomere complex and the origin of the cancer stem cell. Biomark Res 2021; 9:81. [PMID: 34736527 PMCID: PMC8567692 DOI: 10.1186/s40364-021-00339-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2021] [Accepted: 10/21/2021] [Indexed: 11/15/2022] Open
Abstract
Exquisite regulation of telomere length is essential for the preservation of the lifetime function and self-renewal of stem cells. However, multiple oncogenic pathways converge on induction of telomere attrition or telomerase overexpression and these events can by themselves trigger malignant transformation. Activation of NFκB, the outcome of telomere complex damage, is present in leukemia stem cells but absent in normal stem cells and can activate DOT1L which has been linked to MLL-fusion leukemias. Tumors that arise from cells of early and late developmental stages appear to follow two different oncogenic routes in which the role of telomere and telomerase signaling might be differentially involved. In contrast, direct malignant transformation of stem cells appears to be extremely rare. This suggests an inherent resistance of stem cells to cancer transformation which could be linked to a stem cell’specific mechanism of telomere maintenance. However, tumor protection of normal stem cells could also be conferred by cell extrinsic mechanisms.
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Affiliation(s)
- A Torres-Montaner
- Department of Pathology, Queen's Hospital, Rom Valley Way, London, Romford, RM7 OAG, UK. .,Departamento de Bioquímica y Biología Molecular, Facultad de Ciencias, Universidad de Cádiz, 11510 Puerto Real, Cádiz, Spain.
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27
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Feng Y, Zhang T, Wang Y, Xie M, Ji X, Luo X, Huang W, Xia L. Homeobox Genes in Cancers: From Carcinogenesis to Recent Therapeutic Intervention. Front Oncol 2021; 11:770428. [PMID: 34722321 PMCID: PMC8551923 DOI: 10.3389/fonc.2021.770428] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2021] [Accepted: 09/28/2021] [Indexed: 12/11/2022] Open
Abstract
The homeobox (HOX) genes encoding an evolutionarily highly conserved family of homeodomain-containing transcriptional factors are essential for embryogenesis and tumorigenesis. HOX genes are involved in cell identity determination during early embryonic development and postnatal processes. The deregulation of HOX genes is closely associated with numerous human malignancies, highlighting the indispensable involvement in mortal cancer development. Since most HOX genes behave as oncogenes or tumor suppressors in human cancer, a better comprehension of their upstream regulators and downstream targets contributes to elucidating the function of HOX genes in cancer development. In addition, targeting HOX genes may imply therapeutic potential. Recently, novel therapies such as monoclonal antibodies targeting tyrosine receptor kinases, small molecular chemical inhibitors, and small interfering RNA strategies, are difficult to implement for targeting transcriptional factors on account of the dual function and pleiotropic nature of HOX genes-related molecular networks. This paper summarizes the current state of knowledge on the roles of HOX genes in human cancer and emphasizes the emerging importance of HOX genes as potential therapeutic targets to overcome the limitations of present cancer therapy.
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Affiliation(s)
- Yangyang Feng
- Department of Gastroenterology, Institute of Liver and Gastrointestinal Diseases, Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Hubei Key Laboratory of Hepato-Pancreato-Biliary Diseases, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Tongyue Zhang
- Department of Gastroenterology, Institute of Liver and Gastrointestinal Diseases, Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Hubei Key Laboratory of Hepato-Pancreato-Biliary Diseases, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yijun Wang
- Department of Gastroenterology, Institute of Liver and Gastrointestinal Diseases, Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Hubei Key Laboratory of Hepato-Pancreato-Biliary Diseases, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Meng Xie
- Department of Gastroenterology, Institute of Liver and Gastrointestinal Diseases, Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Hubei Key Laboratory of Hepato-Pancreato-Biliary Diseases, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Xiaoyu Ji
- Department of Gastroenterology, Institute of Liver and Gastrointestinal Diseases, Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Hubei Key Laboratory of Hepato-Pancreato-Biliary Diseases, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Xiangyuan Luo
- Department of Gastroenterology, Institute of Liver and Gastrointestinal Diseases, Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Hubei Key Laboratory of Hepato-Pancreato-Biliary Diseases, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Wenjie Huang
- Hubei Key Laboratory of Hepato-Pancreato-Biliary Diseases, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Hepatic Surgery Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Limin Xia
- Department of Gastroenterology, Institute of Liver and Gastrointestinal Diseases, Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Hubei Key Laboratory of Hepato-Pancreato-Biliary Diseases, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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28
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Blasi F, Bruckmann C. MEIS1 in Hematopoiesis and Cancer. How MEIS1-PBX Interaction Can Be Used in Therapy. J Dev Biol 2021; 9:jdb9040044. [PMID: 34698191 PMCID: PMC8544432 DOI: 10.3390/jdb9040044] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2021] [Revised: 10/04/2021] [Accepted: 10/05/2021] [Indexed: 11/26/2022] Open
Abstract
Recently MEIS1 emerged as a major determinant of the MLL-r leukemic phenotype. The latest and most efficient drugs effectively decrease the levels of MEIS1 in cancer cells. Together with an overview of the latest drugs developed to target MEIS1 in MLL-r leukemia, we review, in detail, the role of MEIS1 in embryonic and adult hematopoiesis and suggest how a more profound knowledge of MEIS1 biochemistry can be used to design potent and effective drugs against MLL-r leukemia. In addition, we present data showing that the interaction between MEIS1 and PBX1 can be blocked efficiently and might represent a new avenue in anti-MLL-r and anti-leukemic therapy.
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29
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Chung HY, Lin BA, Lin YX, Chang CW, Tzou WS, Pei TW, Hu CH. Meis1, Hi1α, and GATA1 are integrated into a hierarchical regulatory network to mediate primitive erythropoiesis. FASEB J 2021; 35:e21915. [PMID: 34496088 DOI: 10.1096/fj.202001044rrr] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Revised: 08/20/2021] [Accepted: 08/27/2021] [Indexed: 12/16/2022]
Abstract
During development, erythroid cells are generated by two waves of hematopoiesis. In zebrafish, primitive erythropoiesis takes place in the intermediate cell mass region, and definitive erythropoiesis arises from the aorta-gonad mesonephros. TALE-homeoproteins Meis1 and Pbx1 function upstream of GATA1 to specify the erythroid lineage. Embryos lacking Meis1 or Pbx1 have weak gata1 expression and fail to produce primitive erythrocytes. Nevertheless, the underlying mechanism of how Meis1 and Pbx1 mediate gata1 transcription in erythrocytes remains unclear. Here we show that Hif1α acts downstream of Meis1 to mediate gata1 expression in zebrafish embryos. Inhibition of Meis1 expression resulted in suppression of hif1a expression and abrogated primitive erythropoiesis, while injection with in vitro-synthesized hif1α mRNA rescued gata1 transcription in Meis1 morphants and recovered their erythropoiesis. Ablation of Hif1α expression either by morpholino knockdown or Crispr-Cas9 knockout suppressed gata1 transcription and abrogated primitive erythropoiesis. Results of chromatin immunoprecipitation assays showed that Hif1α associates with hypoxia-response elements located in the 3'-flanking region of gata1 during development, suggesting that Hif1α regulates gata1 expression in vivo. Together, our results indicate that Meis1, Hif1α, and GATA1 indeed comprise a hierarchical regulatory network in which Hif1α acts downstream of Meis1 to activate gata1 transcription through direct interactions with its cis-acting elements in primitive erythrocytes.
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Affiliation(s)
- Hsin-Yu Chung
- Department of Bioscience and Biotechnology, National Taiwan Ocean University, Keelung, Taiwan
| | - Bo-An Lin
- Department of Bioscience and Biotechnology, National Taiwan Ocean University, Keelung, Taiwan
| | - Yi-Xuan Lin
- Department of Bioscience and Biotechnology, National Taiwan Ocean University, Keelung, Taiwan
| | - Chen-Wei Chang
- Department of Bioscience and Biotechnology, National Taiwan Ocean University, Keelung, Taiwan
| | - Wen-Shyong Tzou
- Department of Bioscience and Biotechnology, National Taiwan Ocean University, Keelung, Taiwan.,Center of Excellence for the Oceans, National Taiwan Ocean University, Keelung, Taiwan
| | - Tun-Wen Pei
- Department of Computer Science and Information Engineering, National Taipei University of Technology
| | - Chin-Hwa Hu
- Department of Bioscience and Biotechnology, National Taiwan Ocean University, Keelung, Taiwan.,Center of Excellence for the Oceans, National Taiwan Ocean University, Keelung, Taiwan
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30
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Esa E, Hashim AK, Mohamed EHM, Zakaria Z, Abu Hassan AN, Mat Yusoff Y, Kamaluddin NR, Abdul Rahman AZ, Chang KM, Mohamed R, Subbiah I, Jamian E, Ho CSL, Lim SM, Lau PC, Pung YF, Zain SM. Construction of a microRNA-mRNA Regulatory Network in De Novo Cytogenetically Normal Acute Myeloid Leukemia Patients. Genet Test Mol Biomarkers 2021; 25:199-210. [PMID: 33734890 DOI: 10.1089/gtmb.2020.0182] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Background: The association between dysregulated microRNAs (miRNAs) and acute myeloid leukemia (AML) is well known. However, our understanding of the regulatory role of miRNAs in the cytogenetically normal AML (CN-AML) subtype pathway is still poor. The current study integrated miRNA and mRNA profiles to explore novel miRNA-mRNA interactions that affect the regulatory patterns of de novo CN-AML. Methods: We utilized a multiplexed nanoString nCounter platform to profile both miRNAs and mRNAs using similar sets of patient samples (n = 24). Correlations were assessed, and an miRNA-mRNA network was constructed. The underlying biological functions of the mRNAs were predicted by gene enrichment. Finally, the interacting pairs were assessed using TargetScan and microT-CDS. We identified 637 significant negative correlations (false discovery rate <0.05). Results: Network analysis revealed a cluster of 12 miRNAs representing the majority of mRNA targets. Within the cluster, five miRNAs (miR-495-3p, miR-185-5p, let-7i-5p, miR-409-3p, and miR-127-3p) were posited to play a pivotal role in the regulation of CN-AML, as they are associated with the negative regulation of myeloid leukocyte differentiation, negative regulation of myeloid cell differentiation, and positive regulation of hematopoiesis. Conclusion: Three novel interactions in CN-AML were predicted as let-7i-5p:HOXA9, miR-495-3p:PIK3R1, and miR-495-3p:CDK6 may be responsible for regulating myeloid cell differentiation in CN-AML.
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Affiliation(s)
- Ezalia Esa
- Haematology Unit, Cancer Research Centre, Institute for Medical Research, Jalan Pahang, Kuala Lumpur, Malaysia
| | | | | | - Zubaidah Zakaria
- Department of Pharmacology, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
| | - Alifah Nadia Abu Hassan
- Haematology Unit, Cancer Research Centre, Institute for Medical Research, Jalan Pahang, Kuala Lumpur, Malaysia
| | - Yuslina Mat Yusoff
- Haematology Unit, Cancer Research Centre, Institute for Medical Research, Jalan Pahang, Kuala Lumpur, Malaysia
| | - Nor Rizan Kamaluddin
- Haematology Unit, Cancer Research Centre, Institute for Medical Research, Jalan Pahang, Kuala Lumpur, Malaysia
| | - Ahmad Zuhairi Abdul Rahman
- Haematology Unit, Cancer Research Centre, Institute for Medical Research, Jalan Pahang, Kuala Lumpur, Malaysia
| | - Kian-Meng Chang
- Hospital Ampang, Jalan Mewah Utara, Pandan Mewah, Ampang, Malaysia
| | - Rashidah Mohamed
- Hospital Ampang, Jalan Mewah Utara, Pandan Mewah, Ampang, Malaysia
| | - Indhira Subbiah
- Hospital Sultanah Aminah, Bangunan Induk, Jalan Persiaran Abu Bakar Sultan, Johor Bahru, Malaysia
| | - Ehram Jamian
- Hospital Sultanah Aminah, Bangunan Induk, Jalan Persiaran Abu Bakar Sultan, Johor Bahru, Malaysia
| | - Caroline Siew-Ling Ho
- Hospital Sultanah Aminah, Bangunan Induk, Jalan Persiaran Abu Bakar Sultan, Johor Bahru, Malaysia
| | - Soo-Min Lim
- Hospital Sultanah Aminah, Bangunan Induk, Jalan Persiaran Abu Bakar Sultan, Johor Bahru, Malaysia
| | - Peng-Choon Lau
- Department of Surgery, Faculty of Medicine, University of Malaya, Lembah Pantai, Kuala Lumpur, Malaysia
| | - Yuh-Fen Pung
- Department of Biomedical Science, University of Nottingham, Semenyih, Malaysia
| | - Shamsul Mohd Zain
- Department of Pharmacology, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
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31
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Gavory G, Baril C, Laberge G, Bidla G, Koonpaew S, Sonea T, Sauvageau G, Therrien M. A genetic screen in Drosophila uncovers the multifaceted properties of the NUP98-HOXA9 oncogene. PLoS Genet 2021; 17:e1009730. [PMID: 34383740 PMCID: PMC8384169 DOI: 10.1371/journal.pgen.1009730] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2021] [Revised: 08/24/2021] [Accepted: 07/20/2021] [Indexed: 11/19/2022] Open
Abstract
Acute myeloid leukemia (AML) underlies the uncontrolled accumulation of immature myeloid blasts. Several cytogenetic abnormalities have been associated with AML. Among these is the NUP98-HOXA9 (NA9) translocation that fuses the Phe-Gly repeats of nucleoporin NUP98 to the homeodomain of the transcription factor HOXA9. The mechanisms enabling NA9-induced leukemia are poorly understood. Here, we conducted a genetic screen in Drosophila for modifiers of NA9. The screen uncovered 29 complementation groups, including genes with mammalian homologs known to impinge on NA9 activity. Markedly, the modifiers encompassed a diversity of functional categories, suggesting that NA9 perturbs multiple intracellular events. Unexpectedly, we discovered that NA9 promotes cell fate transdetermination and that this phenomenon is greatly influenced by NA9 modifiers involved in epigenetic regulation. Together, our work reveals a network of genes functionally connected to NA9 that not only provides insights into its mechanism of action, but also represents potential therapeutic targets. Acute myeloid leukemia or AML is a cancer of blood cells. Despite significant progress in recent years, a majority of afflicted individuals still succumbs to the disease. A variety of genetic defects have been associated to AML. Among these are chromosomal translocations, which entail the fusion of two genes, leading to the production of cancer-inducing chimeric proteins. A representative example is the NUP98-HOXA9 oncoprotein, which results from the fusion of the NUP98 and HOXA9 genes. The mechanism of action of NUP98-HOXA9 remains poorly understood. Given the evolutionarily conservation of NUP98 and HOXA9 as well as basic cellular processes across multicellular organisms, we took advantage of Drosophila fruit flies as a genetic tool to identify genes that impinge on the activity of human NUP98-HOXA9. Surprisingly, this approach identified a relatively large spectrum of conserved genes that engaged in functional interplay with NUP98-HOXA9, which indicated the pervasive effects that this oncogene has on basic cellular events. While some genes have been previously linked to NUP98-HOXA9, thus validating our experimental approach, several others are novel and as such represent potentially new avenues for therapeutic intervention.
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Affiliation(s)
- Gwenaëlle Gavory
- Institute for Research in Immunology and Cancer, Université de Montréal, Montréal, Canada
| | - Caroline Baril
- Institute for Research in Immunology and Cancer, Université de Montréal, Montréal, Canada
| | - Gino Laberge
- Institute for Research in Immunology and Cancer, Université de Montréal, Montréal, Canada
| | - Gawa Bidla
- Institute for Research in Immunology and Cancer, Université de Montréal, Montréal, Canada
| | - Surapong Koonpaew
- Institute for Research in Immunology and Cancer, Université de Montréal, Montréal, Canada
| | - Thomas Sonea
- Institute for Research in Immunology and Cancer, Université de Montréal, Montréal, Canada
| | - Guy Sauvageau
- Institute for Research in Immunology and Cancer, Université de Montréal, Montréal, Canada.,Département de médecine, Université de Montréal, Montréal, Canada
| | - Marc Therrien
- Institute for Research in Immunology and Cancer, Université de Montréal, Montréal, Canada.,Département de pathologie et de biologie cellulaire, Université de Montréal, Montréal, Canada
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32
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Role of the HOXA cluster in HSC emergence and blood cancer. Biochem Soc Trans 2021; 49:1817-1827. [PMID: 34374409 DOI: 10.1042/bst20210234] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2021] [Revised: 07/21/2021] [Accepted: 07/23/2021] [Indexed: 12/24/2022]
Abstract
Hematopoiesis, the process of blood formation, is controlled by a complex developmental program that involves intrinsic and extrinsic regulators. Blood formation is critical to normal embryonic development and during embryogenesis distinct waves of hematopoiesis have been defined that represent the emergence of hematopoietic stem or progenitor cells. The Class I family of homeobox (HOX) genes are also critical for normal embryonic development, whereby mutations are associated with malformations and deformity. Recently, members of the HOXA cluster (comprising 11 genes and non-coding RNA elements) have been associated with the emergence and maintenance of long-term repopulating HSCs. Previous studies identified a gradient of HOXA expression from high in HSCs to low in circulating peripheral cells, indicating their importance in maintaining blood cell numbers and differentiation state. Indeed, dysregulation of HOXA genes either directly or by genetic lesions of upstream regulators correlates with a malignant phenotype. This review discusses the role of the HOXA cluster in both HSC emergence and blood cancer formation highlighting the need for further research to identify specific roles of these master regulators in normal and malignant hematopoiesis.
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33
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Miyamoto R, Kanai A, Okuda H, Komata Y, Takahashi S, Matsui H, Inaba T, Yokoyama A. HOXA9 promotes MYC-mediated leukemogenesis by maintaining gene expression for multiple anti-apoptotic pathways. eLife 2021; 10:e64148. [PMID: 34310280 PMCID: PMC8313233 DOI: 10.7554/elife.64148] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2020] [Accepted: 07/04/2021] [Indexed: 11/13/2022] Open
Abstract
HOXA9 is often highly expressed in leukemias. However, its precise roles in leukemogenesis remain elusive. Here, we show that HOXA9 maintains gene expression for multiple anti-apoptotic pathways to promote leukemogenesis. In MLL fusion-mediated leukemia, MLL fusion directly activates the expression of MYC and HOXA9. Combined expression of MYC and HOXA9 induced leukemia, whereas single gene transduction of either did not, indicating a synergy between MYC and HOXA9. HOXA9 sustained expression of the genes implicated in the hematopoietic precursor identity when expressed in hematopoietic precursors, but did not reactivate it once silenced. Among the HOXA9 target genes, BCL2 and SOX4 synergistically induced leukemia with MYC. Not only BCL2, but also SOX4 suppressed apoptosis, indicating that multiple anti-apoptotic pathways underlie cooperative leukemogenesis by HOXA9 and MYC. These results demonstrate that HOXA9 is a crucial transcriptional maintenance factor that promotes MYC-mediated leukemogenesis, potentially explaining why HOXA9 is highly expressed in many leukemias.
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Affiliation(s)
- Ryo Miyamoto
- Tsuruoka Metabolomics Laboratory, National Cancer CenterTsuruokaJapan
| | - Akinori Kanai
- Department of Molecular Oncology and Leukemia Program Project, Research Institute for Radiation Biology and Medicine, Hiroshima UniversityHiroshimaJapan
| | - Hiroshi Okuda
- Tsuruoka Metabolomics Laboratory, National Cancer CenterTsuruokaJapan
| | - Yosuke Komata
- Tsuruoka Metabolomics Laboratory, National Cancer CenterTsuruokaJapan
| | - Satoshi Takahashi
- Tsuruoka Metabolomics Laboratory, National Cancer CenterTsuruokaJapan
- Department of Hematology and Oncology, Kyoto University Graduate School of MedicineKyotoJapan
| | - Hirotaka Matsui
- Department of Molecular Laboratory Medicine, Graduate School of Medical Sciences, Kumamoto UniversityKumamotoJapan
| | - Toshiya Inaba
- Department of Molecular Oncology and Leukemia Program Project, Research Institute for Radiation Biology and Medicine, Hiroshima UniversityHiroshimaJapan
| | - Akihiko Yokoyama
- Tsuruoka Metabolomics Laboratory, National Cancer CenterTsuruokaJapan
- Division of Hematological Malignancy, National Cancer Center Research InstituteTokyoJapan
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34
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Richter WF, Shah RN, Ruthenburg AJ. Non-canonical H3K79me2-dependent pathways promote the survival of MLL-rearranged leukemia. eLife 2021; 10:64960. [PMID: 34263728 PMCID: PMC8315800 DOI: 10.7554/elife.64960] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Accepted: 07/05/2021] [Indexed: 11/18/2022] Open
Abstract
MLL-rearranged leukemia depends on H3K79 methylation. Depletion of this transcriptionally activating mark by DOT1L deletion or high concentrations of the inhibitor pinometostat downregulates HOXA9 and MEIS1, and consequently reduces leukemia survival. Yet, some MLL-rearranged leukemias are inexplicably susceptible to low-dose pinometostat, far below concentrations that downregulate this canonical proliferation pathway. In this context, we define alternative proliferation pathways that more directly derive from H3K79me2 loss. By ICeChIP-seq, H3K79me2 is markedly depleted at pinometostat-downregulated and MLL-fusion targets, with paradoxical increases of H3K4me3 and loss of H3K27me3. Although downregulation of polycomb components accounts for some of the proliferation defect, transcriptional downregulation of FLT3 is the major pathway. Loss-of-FLT3-function recapitulates the cytotoxicity and gene expression consequences of low-dose pinometostat, whereas overexpression of constitutively active STAT5A, a target of FLT3-ITD-signaling, largely rescues these defects. This pathway also depends on MLL1, indicating combinations of DOT1L, MLL1 and FLT3 inhibitors should be explored for treating FLT3-mutant leukemia.
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Affiliation(s)
- William F Richter
- Department of Molecular Genetics and Cell Biology, The University of Chicago, Chicago, United States
| | - Rohan N Shah
- Department of Molecular Genetics and Cell Biology, The University of Chicago, Chicago, United States.,Pritzker School of Medicine, The University of Chicago, Chicago, United States
| | - Alexander J Ruthenburg
- Department of Molecular Genetics and Cell Biology, The University of Chicago, Chicago, United States.,Department of Biochemistry and Molecular Biology, The University of Chicago, Chicago, United States
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35
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Yokoyama A. Leukemogenesis via aberrant self-renewal by the MLL/AEP-mediated transcriptional activation system. Cancer Sci 2021; 112:3935-3944. [PMID: 34251718 PMCID: PMC8486200 DOI: 10.1111/cas.15054] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2021] [Revised: 07/04/2021] [Accepted: 07/09/2021] [Indexed: 12/17/2022] Open
Abstract
Homeostasis of the hematopoietic system is achieved in a hierarchy, with hematopoietic stem cells at the pinnacle. Because only hematopoietic stem cells (HSCs) can self-renew, the size of the hematopoietic system is strictly controlled. In hematopoietic reconstitution experiments, 1 HSC can reconstitute the entire hematopoietic system, whereas 50 multipotent progenitors cannot. This indicates that only HSCs self-renew, whereas non-HSC hematopoietic progenitors are programmed to differentiate or senesce. Oncogenic mutations of the mixed lineage leukemia gene (MLL) overcome this "programmed differentiation" by conferring the self-renewing ability to non-HSC hematopoietic progenitors. In leukemia, mutated MLL proteins constitutively activate a broad range of previously transcribed CpG-rich promoters by an MLL-mediated transcriptional activation system. This system promotes self-renewal by replicating an expression profile similar to that of the mother cell in its daughter cells. In this transcriptional activation system, MLL binds to unmethylated CpG-rich promoters and recruits RNA polymerase II. MLL recruits p300/CBP through its transcriptional activation domain, which acetylates histone H3 at lysines 9, 18, and 27. The AF4 family/ENL family/P-TEFb complex (AEP) binds to acetylated H3K9/18/27 to activate transcription. Gene rearrangements of MLL with AEP- or CBP/p300-complex components generate constitutively active transcriptional machinery of this transcriptional activation system, which causes aberrant self-renewal of leukemia stem cells. Inhibitors of the components of this system effectively decrease their leukemogenic potential.
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Affiliation(s)
- Akihiko Yokoyama
- Tsuruoka Metabolomics Laboratory, National Cancer Center, Tsuruoka, Japan.,National Cancer Center Research Institute, Tokyo, Japan
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36
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Gene Expression at a Single Molecule Level: Implications for MDS and AML. Blood 2021; 138:625-636. [PMID: 34157070 DOI: 10.1182/blood.2019004261] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Accepted: 12/03/2020] [Indexed: 12/11/2022] Open
Abstract
Non-genetic heterogeneity, or gene expression stochasticity, is an important source of variability in biological systems. With the advent and improvement of single molecule resolution technologies, it has been shown that transcription dynamics and resultant transcript number fluctuations generate significant cell-to-cell variability that has important biological effects and may contribute substantially to both tissue homeostasis and disease. In this respect, the pathophysiology of stem cell-derived malignancies such as AML and MDS, which has historically been studied at the ensemble level, may require re-evaluation. To that end, it is our aim in this review to highlight the results of recent single-molecule, biophysical, and systems studies of gene expression dynamics, with the explicit purpose of demonstrating how the insights from these basic science studies may help inform and progress the field of leukemia biology and, ultimately, research into novel therapies.
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37
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Han F, Zhao H, Lu J, Yun W, Yang L, Lou Y, Su D, Chen X, Zhang S, Jin H, Li X, Sun J, Huang H, Wang Q, Jiang X. Anti-Tumor Effects of BDH1 in Acute Myeloid Leukemia. Front Oncol 2021; 11:694594. [PMID: 34150668 PMCID: PMC8213090 DOI: 10.3389/fonc.2021.694594] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Accepted: 05/12/2021] [Indexed: 12/15/2022] Open
Abstract
Dysregulation of ketone metabolism has been reported in various types of cancer. In order to find out its role in acute myeloid leukemia (AML) pathogenesis, we first analyzed the expression levels of 10 key genes involved in ketone metabolism in AML blasts and CD34+ hematopoietic stem cells (HSCs) from healthy donors. We found that the expression level of BDH1 was significantly lower in AML than in normal HSCs. The downregulation of BDH1 gene expression in AML cell lines as compared with normal HSCs was further confirmed with real-time RT-PCR. Analysis of TCGA and other database revealed that the downregulation of BDH1 was associated with worse prognosis in AML patients. In addition, we showed that overexpression of BDH1 inhibited the viability and proliferation of AML cells. In contrast, BDH1 knock-down promoted AML cell growth. Collectively, our results suggest the previously unappreciated anti-tumor role of BDH1 in AML, and low BDH1 expression predicts poor survival.
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Affiliation(s)
- Fei Han
- Department of Pharmacology and Bone Marrow Transplantation Center of the First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China.,Institute of Hematology, Zhejiang University & Zhejiang Engineering Laboratory for Stem Cell and Immunotherapy, Hangzhou, China.,Liangzhu Laboratory, Zhejiang University Medical Center, Hangzhou, China
| | - Huanhuan Zhao
- Department of Pharmacology and Bone Marrow Transplantation Center of the First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China.,Institute of Hematology, Zhejiang University & Zhejiang Engineering Laboratory for Stem Cell and Immunotherapy, Hangzhou, China.,Liangzhu Laboratory, Zhejiang University Medical Center, Hangzhou, China
| | - Jun Lu
- Department of Pharmacology and Bone Marrow Transplantation Center of the First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China.,Institute of Hematology, Zhejiang University & Zhejiang Engineering Laboratory for Stem Cell and Immunotherapy, Hangzhou, China.,Liangzhu Laboratory, Zhejiang University Medical Center, Hangzhou, China
| | - Weina Yun
- Department of Pharmacology and Bone Marrow Transplantation Center of the First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China.,Institute of Hematology, Zhejiang University & Zhejiang Engineering Laboratory for Stem Cell and Immunotherapy, Hangzhou, China.,Liangzhu Laboratory, Zhejiang University Medical Center, Hangzhou, China
| | - Lingling Yang
- Department of Pharmacology and Bone Marrow Transplantation Center of the First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China.,Institute of Hematology, Zhejiang University & Zhejiang Engineering Laboratory for Stem Cell and Immunotherapy, Hangzhou, China.,Liangzhu Laboratory, Zhejiang University Medical Center, Hangzhou, China
| | - Yude Lou
- Department of Pharmacology and Bone Marrow Transplantation Center of the First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China.,Institute of Hematology, Zhejiang University & Zhejiang Engineering Laboratory for Stem Cell and Immunotherapy, Hangzhou, China.,Liangzhu Laboratory, Zhejiang University Medical Center, Hangzhou, China
| | - Dan Su
- Department of Pharmacology and Bone Marrow Transplantation Center of the First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China.,Institute of Hematology, Zhejiang University & Zhejiang Engineering Laboratory for Stem Cell and Immunotherapy, Hangzhou, China.,Liangzhu Laboratory, Zhejiang University Medical Center, Hangzhou, China
| | - Xin Chen
- Department of Pharmacology and Bone Marrow Transplantation Center of the First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China.,Institute of Hematology, Zhejiang University & Zhejiang Engineering Laboratory for Stem Cell and Immunotherapy, Hangzhou, China.,Liangzhu Laboratory, Zhejiang University Medical Center, Hangzhou, China
| | - Shixuan Zhang
- Department of Pharmacology and Bone Marrow Transplantation Center of the First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China.,Institute of Hematology, Zhejiang University & Zhejiang Engineering Laboratory for Stem Cell and Immunotherapy, Hangzhou, China.,Liangzhu Laboratory, Zhejiang University Medical Center, Hangzhou, China
| | - Hanwei Jin
- Department of Pharmacology and Bone Marrow Transplantation Center of the First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China.,Institute of Hematology, Zhejiang University & Zhejiang Engineering Laboratory for Stem Cell and Immunotherapy, Hangzhou, China.,Liangzhu Laboratory, Zhejiang University Medical Center, Hangzhou, China
| | - Xiang Li
- Department of Pharmacology and Bone Marrow Transplantation Center of the First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China.,Institute of Hematology, Zhejiang University & Zhejiang Engineering Laboratory for Stem Cell and Immunotherapy, Hangzhou, China.,Liangzhu Laboratory, Zhejiang University Medical Center, Hangzhou, China
| | - Jie Sun
- Institute of Hematology, Zhejiang University & Zhejiang Engineering Laboratory for Stem Cell and Immunotherapy, Hangzhou, China.,Bone Marrow Transplantation Center of the First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - He Huang
- Institute of Hematology, Zhejiang University & Zhejiang Engineering Laboratory for Stem Cell and Immunotherapy, Hangzhou, China.,Liangzhu Laboratory, Zhejiang University Medical Center, Hangzhou, China.,Bone Marrow Transplantation Center of the First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Qishan Wang
- College of Animal Sciences, Zhejiang University, Hangzhou, China
| | - Xi Jiang
- Department of Pharmacology and Bone Marrow Transplantation Center of the First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China.,Institute of Hematology, Zhejiang University & Zhejiang Engineering Laboratory for Stem Cell and Immunotherapy, Hangzhou, China.,Liangzhu Laboratory, Zhejiang University Medical Center, Hangzhou, China
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38
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Garnar-Wortzel L, Bishop TR, Kitamura S, Milosevich N, Asiaban JN, Zhang X, Zheng Q, Chen E, Ramos AR, Ackerman CJ, Hampton EN, Chatterjee AK, Young TS, Hull MV, Sharpless KB, Cravatt BF, Wolan DW, Erb MA. Chemical Inhibition of ENL/AF9 YEATS Domains in Acute Leukemia. ACS CENTRAL SCIENCE 2021; 7:815-830. [PMID: 34079898 PMCID: PMC8161486 DOI: 10.1021/acscentsci.0c01550] [Citation(s) in RCA: 45] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Indexed: 05/05/2023]
Abstract
Transcriptional coregulators, which mediate chromatin-dependent transcriptional signaling, represent tractable targets to modulate tumorigenic gene expression programs with small molecules. Genetic loss-of-function studies have recently implicated the transcriptional coactivator, ENL, as a selective requirement for the survival of acute leukemia and highlighted an essential role for its chromatin reader YEATS domain. Motivated by these discoveries, we executed a screen of nearly 300,000 small molecules and identified an amido-imidazopyridine inhibitor of the ENL YEATS domain (IC50 = 7 μM). Improvements to the initial screening hit were enabled by adopting and expanding upon a SuFEx-based approach to high-throughput medicinal chemistry, ultimately demonstrating that it is compatible with cell-based drug discovery. Through these efforts, we discovered SR-0813, a potent and selective ENL/AF9 YEATS domain inhibitor (IC50 = 25 nM). Armed with this tool and a first-in-class ENL PROTAC, SR-1114, we detailed the biological response of AML cells to pharmacological ENL disruption for the first time. Most notably, we discovered that ENL YEATS inhibition is sufficient to selectively suppress ENL target genes, including HOXA9/10, MYB, MYC, and a number of other leukemia proto-oncogenes. Cumulatively, our study establishes YEATS domain inhibition as a viable approach to disrupt the pathogenic function of ENL in acute leukemia and provides the first thoroughly characterized chemical probe for the ENL YEATS domain.
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Affiliation(s)
- Leopold Garnar-Wortzel
- Department
of Chemistry, The Scripps Research Institute, La Jolla, California 92037, United States
| | - Timothy R. Bishop
- Department
of Chemistry, The Scripps Research Institute, La Jolla, California 92037, United States
| | - Seiya Kitamura
- Department
of Molecular Medicine, The Scripps Research
Institute, La Jolla, California 92037, United States
- Department
of Integrative Structural and Computational Biology, The Scripps Research Institute, La Jolla, California 92037, United States
| | - Natalia Milosevich
- Department
of Chemistry, The Scripps Research Institute, La Jolla, California 92037, United States
| | - Joshua N. Asiaban
- Department
of Chemistry, The Scripps Research Institute, La Jolla, California 92037, United States
| | - Xiaoyu Zhang
- Department
of Chemistry, The Scripps Research Institute, La Jolla, California 92037, United States
| | - Qinheng Zheng
- Department
of Chemistry, The Scripps Research Institute, La Jolla, California 92037, United States
| | - Emily Chen
- California
Institute for Biomedical Research, The Scripps
Research Institute, La Jolla, California 92037, United States
| | - Anissa R. Ramos
- Department
of Chemistry, The Scripps Research Institute, La Jolla, California 92037, United States
| | - Christopher J. Ackerman
- California
Institute for Biomedical Research, The Scripps
Research Institute, La Jolla, California 92037, United States
| | - Eric N. Hampton
- California
Institute for Biomedical Research, The Scripps
Research Institute, La Jolla, California 92037, United States
| | - Arnab K. Chatterjee
- California
Institute for Biomedical Research, The Scripps
Research Institute, La Jolla, California 92037, United States
| | - Travis S. Young
- California
Institute for Biomedical Research, The Scripps
Research Institute, La Jolla, California 92037, United States
| | - Mitchell V. Hull
- California
Institute for Biomedical Research, The Scripps
Research Institute, La Jolla, California 92037, United States
| | - K. Barry Sharpless
- Department
of Chemistry, The Scripps Research Institute, La Jolla, California 92037, United States
| | - Benjamin F. Cravatt
- Department
of Chemistry, The Scripps Research Institute, La Jolla, California 92037, United States
| | - Dennis W. Wolan
- Department
of Molecular Medicine, The Scripps Research
Institute, La Jolla, California 92037, United States
- Department
of Integrative Structural and Computational Biology, The Scripps Research Institute, La Jolla, California 92037, United States
| | - Michael A. Erb
- Department
of Chemistry, The Scripps Research Institute, La Jolla, California 92037, United States
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Ozyerli‐Goknar E, Nizamuddin S, Timmers HTM. A Box of Chemistry to Inhibit the MEN1 Tumor Suppressor Gene Promoting Leukemia. ChemMedChem 2021; 16:1391-1402. [PMID: 33534953 PMCID: PMC8252030 DOI: 10.1002/cmdc.202000972] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2020] [Indexed: 12/30/2022]
Abstract
Targeting protein-protein interactions (PPIs) with small-molecule inhibitors has become a hotbed of modern drug development. In this review, we describe a new class of PPI inhibitors that block menin from binding to MLL proteins. Menin is encoded by the MEN1 tumor suppressor, but acts as an essential cofactor for MLL/KMT2A-rearranged leukemias. The most promising menin-MLL inhibitors belong to the thienopyrimidine class and have recently entered phase I/II clinical trials for treating acute leukemias characterized by MLL/KMT2A translocations or NPM1 mutations. As single agents, thienopyrimidine compounds eradicate leukemia in a xenograft models of primary leukemic cells belonging to the MLL-rearranged or NPM1-mutant subtypes. These compounds are well tolerated with few or no side effects, which is remarkable given the tumor-suppressor function of menin. The menin-MLL inhibitors highlight how leukemia patients could benefit from a targeted epigenetic therapy with novel PPI inhibitors obtained by directed chemical evolution.
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Affiliation(s)
- Ezgi Ozyerli‐Goknar
- German Cancer Consortium (DKTK) partner site Freiburg German Cancer Research Center (DKFZ) Medical Center-University of Freiburg, Department of UrologyBreisacherstrasse 6679016FreiburgGermany
| | - Sheikh Nizamuddin
- German Cancer Consortium (DKTK) partner site Freiburg German Cancer Research Center (DKFZ) Medical Center-University of Freiburg, Department of UrologyBreisacherstrasse 6679016FreiburgGermany
| | - H. T. Marc Timmers
- German Cancer Consortium (DKTK) partner site Freiburg German Cancer Research Center (DKFZ) Medical Center-University of Freiburg, Department of UrologyBreisacherstrasse 6679016FreiburgGermany
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40
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Trib1 promotes acute myeloid leukemia progression by modulating the transcriptional programs of Hoxa9. Blood 2021; 137:75-88. [PMID: 32730594 DOI: 10.1182/blood.2019004586] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2019] [Accepted: 07/13/2020] [Indexed: 12/13/2022] Open
Abstract
The pseudokinase Trib1 functions as a myeloid oncogene that recruits the E3 ubiquitin ligase COP1 to C/EBPα and interacts with MEK1 to enhance extracellular signal-regulated kinase (ERK) phosphorylation. A close genetic effect of Trib1 on Hoxa9 has been observed in myeloid leukemogenesis, where Trib1 overexpression significantly accelerates Hoxa9-induced leukemia onset. However, the mechanism underlying how Trib1 functionally modulates Hoxa9 transcription activity is unclear. Herein, we provide evidence that Trib1 modulates Hoxa9-associated super-enhancers. Chromatin immunoprecipitation sequencing analysis identified increased histone H3K27Ac signals at super-enhancers of the Erg, Spns2, Rgl1, and Pik3cd loci, as well as increased messenger RNA expression of these genes. Modification of super-enhancer activity was mostly achieved via the degradation of C/EBPα p42 by Trib1, with a slight contribution from the MEK/ERK pathway. Silencing of Erg abrogated the growth advantage acquired by Trib1 overexpression, indicating that Erg is a critical downstream target of the Trib1/Hoxa9 axis. Moreover, treatment of acute myeloid leukemia (AML) cells with the BRD4 inhibitor JQ1 showed growth inhibition in a Trib1/Erg-dependent manner both in vitro and in vivo. Upregulation of ERG by TRIB1 was also observed in human AML cell lines, suggesting that Trib1 is a potential therapeutic target of Hoxa9-associated AML. Taken together, our study demonstrates a novel mechanism by which Trib1 modulates chromatin and Hoxa9-driven transcription in myeloid leukemogenesis.
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Stahlhut M, Ha TC, Takmakova E, Morgan MA, Schwarzer A, Schaudien D, Eder M, Schambach A, Kustikova OS. Conditionally immortalised leukaemia initiating cells co-expressing Hoxa9/Meis1 demonstrate microenvironmental adaptation properties ex vivo while maintaining myelomonocytic memory. Sci Rep 2021; 11:5294. [PMID: 33674652 PMCID: PMC7935976 DOI: 10.1038/s41598-021-84468-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2020] [Accepted: 02/12/2021] [Indexed: 01/31/2023] Open
Abstract
Regulation of haematopoietic stem cell fate through conditional gene expression could improve understanding of healthy haematopoietic and leukaemia initiating cell (LIC) biology. We established conditionally immortalised myeloid progenitor cell lines co-expressing constitutive Hoxa9.EGFP and inducible Meis1.dTomato (H9M-ciMP) to study growth behaviour, immunophenotype and morphology under different cytokine/microenvironmental conditions ex vivo upon doxycycline (DOX) induction or removal. The vector design and drug-dependent selection approach identified new retroviral insertion (RVI) sites that potentially collaborate with Meis1/Hoxa9 and define H9M-ciMP fate. For most cell lines, myelomonocytic conditions supported reversible H9M-ciMP differentiation into neutrophils and macrophages with DOX-dependent modulation of Hoxa9/Meis1 and CD11b/Gr-1 expression. Here, up-regulation of Meis1/Hoxa9 promoted reconstitution of exponential expansion of immature H9M-ciMPs after DOX reapplication. Stem cell maintaining conditions supported selective H9M-ciMP exponential growth. H9M-ciMPs that had Ninj2 RVI and were cultured under myelomonocytic or stem cell maintaining conditions revealed the development of DOX-dependent acute myeloid leukaemia in a murine transplantation model. Transcriptional dysregulation of Ninj2 and distal genes surrounding RVI (Rad52, Kdm5a) was detected. All studied H9M-ciMPs demonstrated adaptation to T-lymphoid microenvironmental conditions while maintaining immature myelomonocytic features. Thus, the established system is relevant to leukaemia and stem cell biology.
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Affiliation(s)
- Maike Stahlhut
- Institute of Experimental Hematology, Hannover Medical School, Carl-Neuberg-Strasse 1, 30625, Hannover, Germany
- REBIRTH - Research Center for Translational Regenerative Medicine, Hannover Medical School, Hannover, Germany
| | - Teng Cheong Ha
- Institute of Experimental Hematology, Hannover Medical School, Carl-Neuberg-Strasse 1, 30625, Hannover, Germany
- REBIRTH - Research Center for Translational Regenerative Medicine, Hannover Medical School, Hannover, Germany
| | - Ekaterina Takmakova
- Institute of Experimental Hematology, Hannover Medical School, Carl-Neuberg-Strasse 1, 30625, Hannover, Germany
- REBIRTH - Research Center for Translational Regenerative Medicine, Hannover Medical School, Hannover, Germany
| | - Michael A Morgan
- Institute of Experimental Hematology, Hannover Medical School, Carl-Neuberg-Strasse 1, 30625, Hannover, Germany
- REBIRTH - Research Center for Translational Regenerative Medicine, Hannover Medical School, Hannover, Germany
| | - Adrian Schwarzer
- Institute of Experimental Hematology, Hannover Medical School, Carl-Neuberg-Strasse 1, 30625, Hannover, Germany
- REBIRTH - Research Center for Translational Regenerative Medicine, Hannover Medical School, Hannover, Germany
- Department of Hematology, Hemostasis, Oncology and Stem Cell Transplantation, Hannover Medical School, Hannover, Germany
| | - Dirk Schaudien
- Fraunhofer Institute for Toxicology and Experimental Medicine ITEM, Hannover, Germany
| | - Matthias Eder
- REBIRTH - Research Center for Translational Regenerative Medicine, Hannover Medical School, Hannover, Germany
- Department of Hematology, Hemostasis, Oncology and Stem Cell Transplantation, Hannover Medical School, Hannover, Germany
| | - Axel Schambach
- Institute of Experimental Hematology, Hannover Medical School, Carl-Neuberg-Strasse 1, 30625, Hannover, Germany.
- REBIRTH - Research Center for Translational Regenerative Medicine, Hannover Medical School, Hannover, Germany.
- Division of Hematology/Oncology, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA.
| | - Olga S Kustikova
- Institute of Experimental Hematology, Hannover Medical School, Carl-Neuberg-Strasse 1, 30625, Hannover, Germany.
- REBIRTH - Research Center for Translational Regenerative Medicine, Hannover Medical School, Hannover, Germany.
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42
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Heimbruch KE, Meyer AE, Agrawal P, Viny AD, Rao S. A cohesive look at leukemogenesis: The cohesin complex and other driving mutations in AML. Neoplasia 2021; 23:337-347. [PMID: 33621854 PMCID: PMC7905235 DOI: 10.1016/j.neo.2021.01.003] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2020] [Revised: 01/20/2021] [Accepted: 01/25/2021] [Indexed: 02/07/2023]
Abstract
Acute myeloid leukemia (AML) affects tens of thousands of patients a year, yet survival rates are as low as 25% in certain populations. This poor survival rate is partially due to the vast genetic diversity of the disease. Rarely do 2 patients with AML have the same mutational profile, which makes the development of targeted therapies particularly challenging. However, a set of recurrent mutations in chromatin modifiers have been identified in many patients, including mutations in the cohesin complex, which have been identified in up to 20% of cases. Interestingly, the canonical function of the cohesin complex in establishing sister chromatid cohesin during mitosis is unlikely to be the affected role in leukemogenesis. Instead, the cohesin complex's role in DNA looping and gene regulation likely facilitates disease. The epigenetic mechanisms by which cohesin complex mutations promote leukemia are not completely elucidated, but alterations of enhancer-promoter interactions and differential histone modifications have been shown to drive oncogenic gene expression changes. Such changes commonly include HoxA upregulation, which may represent a common pathway that could be therapeutically targeted. As cohesin mutations rarely occur alone, examining the impact of common co-occurring mutations, including those in NPM1, the core-binding factor complex, FLT3, and ASXL1, will yield additional insight. While further study of these mutational interactions is required, current research suggests that the use of combinatorial genetics could be the key to uncovering new targets, allowing for the treatment of AML patients based on their individual genetic profiles.
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Affiliation(s)
- Katelyn E Heimbruch
- Blood Research Institute, Versiti, Milwaukee, WI, USA; Department of Cell Biology, Neurobiology, and Anatomy, Medical College of Wisconsin, Milwaukee, WI, USA
| | | | - Puja Agrawal
- Blood Research Institute, Versiti, Milwaukee, WI, USA; Department of Cell Biology, Neurobiology, and Anatomy, Medical College of Wisconsin, Milwaukee, WI, USA
| | - Aaron D Viny
- Department of Medicine, Division of Hematology and Oncology, and Department of Genetics & Development, Columbia University Irving Medical Center, New York, NY, USA
| | - Sridhar Rao
- Blood Research Institute, Versiti, Milwaukee, WI, USA; Department of Cell Biology, Neurobiology, and Anatomy, Medical College of Wisconsin, Milwaukee, WI, USA; Department of Pediatrics, Division of Hematology, Oncology, and Bone Marrow Transplantation, Medical College of Wisconsin, Milwaukee, WI, USA.
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43
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Drosophila Hox genes induce melanized pseudo-tumors when misexpressed in hemocytes. Sci Rep 2021; 11:1838. [PMID: 33469139 PMCID: PMC7815749 DOI: 10.1038/s41598-021-81472-5] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2020] [Accepted: 01/07/2021] [Indexed: 12/17/2022] Open
Abstract
Hox genes are early determinants of cell identity along the anterior–posterior body axis across bilaterians. Several late non-homeotic functions of Hox genes have emerged in a variety of processes involved in organogenesis in several organisms, including mammals. Several studies have reported the misexpression of Hox genes in a variety of malignancies including acute myeloid leukemia. The Hox genes Dfd, Ubx, abd-A and Abd-B were overexpressed via the UAS-Gal4 system using Cg-Gal4, Lsp2-Gal4, He-Gal4 and HmlD3-Gal4 as specific drivers. Genetic interaction was tested by bringing overexpression lines in heterozygous mutant backgrounds of Polycomb and trithorax group factors. Larvae were visually scored for melanized bodies. Circulating hemocytes were quantified and tested for differentiation. Pupal lethality was assessed. Expression of Dfd, Ubx and abd-A, but not Abd-B in the hematopoietic compartment of Drosophila led to the appearance of circulating melanized bodies, an increase in cell number, cell-autonomous proliferation, and differentiation of hemocytes. Pupal lethality and melanized pseudo-tumors were suppressed in Psc1 and esc2 backgrounds while polycomb group member mutations Pc1 and Su(z)123 and trithorax group member mutation TrlR85 enhanced the phenotype. Dfd, Ubx and abd-A are leukemogenic. Mutations in Polycomb and trithorax group members modulate the leukemogenic phenotype. Our RNAseq of Cg-Gal4 > UAS-abd-A hemocytes may contain genes important to Hox gene induced leukemias.
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44
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Lee HR, Lee GY, Kim EW, Kim HJ, Lee M, Humphries RK, Oh IH. Reversible switching of leukemic cells to a drug-resistant, stem-like subset via IL-4 mediated cross-talk with mesenchymal stroma. Haematologica 2021; 107:381-392. [PMID: 33440923 PMCID: PMC8804570 DOI: 10.3324/haematol.2020.269944] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2020] [Indexed: 11/13/2022] Open
Abstract
Chemoresistance of leukemic cells has largely been attributed to clonal evolution secondary to accumulating mutations. Here, we show that a subset of leukemic blasts in contact with the mesenchymal stroma undergo cellular conversion into a distinct cell type that exhibits a stem cell-like phenotype and chemoresistance. These stroma-induced changes occur in a reversible and stochastic manner driven by cross-talk, whereby stromal contact induces interleukin-4 in leukemic cells that in turn targets the mesenchymal stroma to facilitate the development of new subset. This mechanism was dependent on interleukin-4-mediated upregulation of vascular cell adhesion molecule- 1 in mesenchymal stroma, causing tight adherence of leukemic cells to mesenchymal progenitors for generation of new subsets. Together, our study reveals another class of chemoresistance in leukemic blasts via functional evolution through stromal cross-talk, and demonstrates dynamic switching of leukemic cell fates that could cause a non-homologous response to chemotherapy in concert with the patient-specific microenvironment.
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Affiliation(s)
- Hae-Ri Lee
- Catholic High-Performance Cell Therapy Center and Department of Medical Life Science, College of Medicine, The Catholic University, Seoul
| | - Ga-Young Lee
- Catholic High-Performance Cell Therapy Center and Department of Medical Life Science, College of Medicine, The Catholic University, Seoul
| | - Eung-Won Kim
- Catholic High-Performance Cell Therapy Center and Department of Medical Life Science, College of Medicine, The Catholic University, Seoul
| | - Hee-Je Kim
- Division of Hematology, Department of Internal Medicine, St Mary's Hematology Hospital, College of Medicine, The Catholic University of Korea
| | - Minho Lee
- Department of Life Science, Dongguk University-Seoul, Goyang-si, Gyeonggi-do
| | - R Keith Humphries
- Terry Fox Laboratory, British Columbia Cancer Agency, Vancouver, Canada; Department of Medicine, University of British Columbia, Vancouver
| | - Il-Hoan Oh
- Catholic High-Performance Cell Therapy Center and Department of Medical Life Science, College of Medicine, The Catholic University, Seoul.
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45
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Abstract
PURPOSE OF REVIEW Rearrangements of the histone lysine [K]-MethylTransferase 2A gene (KMT2A) gene on chromosome 11q23, formerly known as the mixed-lineage leukemia (MLL) gene, are found in 10% and 5% of adult and children ALL cases, respectively. The most common translocated genes are AFF1 (formerly AF4), MLLT3 (formerly AF9), and MLLT1 (formerly ENL). The bimodal incidence of MLL-r-ALL usually peaks in infants in their first 2 years of life and then declines thereafter during the pediatric/young adult phase until it increases again with age. MLL-rearranged ALL (MLL-r-ALL) is characterized by hyperleukocytosis, aggressive behavior with early relapse, relatively high incidence of central nervous system (CNS) involvement, and poor prognosis. RECENT FINDINGS MLL-r-ALL cells are characterized by relative resistance to corticosteroids (due to Src kinase-induced phosphorylation of annexin A2) and L-asparaginase therapy, but they are sensitive to cytarabine chemotherapy (due to increased levels of hENT1 expression). Potential therapeutic targets include FLT3 inhibitors, MEK inhibitors, HDAC inhibitors, BCL-2 inhibitors, MCL-1 inhibitors, proteasome inhibitors, hypomethylating agents, Dot1L inhibitors, and CDK inhibitors. In this review, we discuss MLL-r-ALL focusing on clinical presentation, risk stratification, drug resistance, and treatment strategies, including potential novel therapeutic targets.
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Affiliation(s)
- Firas El Chaer
- Department of Medicine, Division of Hematology and Oncology, University of Virginia School of Medicine, 1215 Lee Street, Charlottesville, VA, 22903, USA
| | - Michael Keng
- Department of Medicine, Division of Hematology and Oncology, University of Virginia School of Medicine, 1215 Lee Street, Charlottesville, VA, 22903, USA
| | - Karen K Ballen
- Department of Medicine, Division of Hematology and Oncology, University of Virginia School of Medicine, 1215 Lee Street, Charlottesville, VA, 22903, USA.
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46
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Mir142 loss unlocks IDH2 R140-dependent leukemogenesis through antagonistic regulation of HOX genes. Sci Rep 2020; 10:19390. [PMID: 33173219 PMCID: PMC7656267 DOI: 10.1038/s41598-020-76218-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2020] [Accepted: 10/22/2020] [Indexed: 12/30/2022] Open
Abstract
AML is a genetically heterogeneous disease and understanding how different co-occurring mutations cooperate to drive leukemogenesis will be crucial for improving diagnostic and therapeutic options for patients. MIR142 mutations have been recurrently detected in IDH-mutated AML samples. Here, we have used a mouse model to investigate the interaction between these two mutations and demonstrate a striking synergy between Mir142 loss-of-function and IDH2R140Q, with only recipients of double mutant cells succumbing to leukemia. Transcriptomic analysis of the non-leukemic single and leukemic double mutant progenitors, isolated from these mice, suggested a novel mechanism of cooperation whereby Mir142 loss-of-function counteracts aberrant silencing of Hoxa cluster genes by IDH2R140Q. Our analysis suggests that IDH2R140Q is an incoherent oncogene, with both positive and negative impacts on leukemogenesis, which requires the action of cooperating mutations to alleviate repression of Hoxa genes in order to advance to leukemia. This model, therefore, provides a compelling rationale for understanding how different mutations cooperate to drive leukemogenesis and the context-dependent effects of oncogenic mutations.
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47
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Khan I, Eklund EE, Gartel AL. Therapeutic Vulnerabilities of Transcription Factors in AML. Mol Cancer Ther 2020; 20:229-237. [PMID: 33158995 DOI: 10.1158/1535-7163.mct-20-0115] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Revised: 08/13/2020] [Accepted: 10/19/2020] [Indexed: 11/16/2022]
Abstract
Acute myeloid leukemia (AML) is characterized by impaired myeloid lineage differentiation, uncontrolled proliferation, and inhibition of proapoptotic pathways. In spite of a relatively homogeneous clinical disease presentation, risk of long-term survival in AML varies from 20% to 80% depending on molecular disease characteristics. In recognition of the molecular heterogeneity of AML, the European Leukemia Net (ELN) and WHO classification systems now incorporate cytogenetics and increasing numbers of gene mutations into AML prognostication. Several of the genomic AML subsets are characterized by unique transcription factor alterations that are highlighted in this review. There are many mechanisms of transcriptional deregulation in leukemia. We broadly classify transcription factors based on mechanisms of transcriptional deregulation including direct involvement of transcription factors in recurrent translocations, loss-of-function mutations, and intracellular relocalization. Transcription factors, due to their pleiotropic effects, have been attractive but elusive targets. Indirect targeting approaches include inhibition of upstream kinases such as TAK1 for suppression of NFκB signaling and downstream effectors such as FGF signaling in HOXA-upregulated leukemia. Other strategies include targeting scaffolding proteins like BrD4 in the case of MYC or coactivators such as menin to suppress HOX expression; disrupting critical protein interactions in the case of β-catenin:TCF/LEF, and preventing transcription factor binding to DNA as in the case of PU.1 or FOXM1. We comprehensively describe the mechanism of deregulation of transcription factors in genomic subsets of AML, consequent pathway addictions, and potential therapeutic strategies.
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Affiliation(s)
- Irum Khan
- Department of Medicine, University of Illinois, Chicago, Illinois
| | - Elizabeth E Eklund
- Feinberg School of Medicine and Robert H. Lurie Comprehensive Cancer Center, Northwestern University, Chicago, Illinois.,Jesse Brown VA Medical Center, Chicago, Illinois
| | - Andrei L Gartel
- Department of Medicine, University of Illinois, Chicago, Illinois.
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48
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Bruckmann C, Tamburri S, De Lorenzi V, Doti N, Monti A, Mathiasen L, Cattaneo A, Ruvo M, Bachi A, Blasi F. Mapping the native interaction surfaces of PREP1 with PBX1 by cross-linking mass-spectrometry and mutagenesis. Sci Rep 2020; 10:16809. [PMID: 33033354 PMCID: PMC7545097 DOI: 10.1038/s41598-020-74032-w] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2019] [Accepted: 09/25/2020] [Indexed: 02/08/2023] Open
Abstract
Both onco-suppressor PREP1 and the oncogene MEIS1 bind to PBX1. This interaction stabilizes the two proteins and allows their translocation into the nucleus and thus their transcriptional activity. Here, we have combined cross-linking mass-spectrometry and systematic mutagenesis to detail the binding geometry of the PBX1-PREP1 (and PBX1-MEIS1) complexes, under native in vivo conditions. The data confirm the existence of two distinct interaction sites within the PBC domain of PBX1 and unravel differences among the highly similar binding sites of MEIS1 and PREP1. The HR2 domain has a fundamental role in binding the PBC-B domain of PBX1 in both PREP1 and MEIS1. The HR1 domain of MEIS1, however, seem to play a less stringent role in PBX1 interaction with respect to that of PREP1. This difference is also reflected by the different binding affinity of the two proteins to PBX1. Although partial, this analysis provides for the first time some ideas on the tertiary structure of the complexes not available before. Moreover, the extensive mutagenic analysis of PREP1 identifies the role of individual hydrophobic HR1 and HR2 residues, both in vitro and in vivo.
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Affiliation(s)
- Chiara Bruckmann
- IFOM (Foundation FIRC Institute of Molecular Oncology), Via Adamello 16, 20139, Milan, Italy.
| | - Simone Tamburri
- IFOM (Foundation FIRC Institute of Molecular Oncology), Via Adamello 16, 20139, Milan, Italy
- Department of Experimental Oncology, European Institute of Oncology, Via Adamello 16, 20139, Milan, Italy
| | - Valentina De Lorenzi
- IFOM (Foundation FIRC Institute of Molecular Oncology), Via Adamello 16, 20139, Milan, Italy
- Center for Nanotechnology Innovation@NEST, Istituto Italiano di Tecnologia, Piazza San Silvestro 12, 56124, Pisa, Italy
| | - Nunzianna Doti
- Institute of Biostructures and Bioimaging (IBB)-CNR, Via Mezzocannone 16, 80134, Naples, Italy
| | - Alessandra Monti
- Institute of Biostructures and Bioimaging (IBB)-CNR, Via Mezzocannone 16, 80134, Naples, Italy
| | - Lisa Mathiasen
- IFOM (Foundation FIRC Institute of Molecular Oncology), Via Adamello 16, 20139, Milan, Italy
| | - Angela Cattaneo
- IFOM (Foundation FIRC Institute of Molecular Oncology), Via Adamello 16, 20139, Milan, Italy
- Cogentech S.R.L. Benefit Corporation IT, Via Adamello 16, 20139, Milan, Italy
| | - Menotti Ruvo
- Institute of Biostructures and Bioimaging (IBB)-CNR, Via Mezzocannone 16, 80134, Naples, Italy
| | - Angela Bachi
- IFOM (Foundation FIRC Institute of Molecular Oncology), Via Adamello 16, 20139, Milan, Italy
| | - Francesco Blasi
- IFOM (Foundation FIRC Institute of Molecular Oncology), Via Adamello 16, 20139, Milan, Italy.
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49
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Stegmüller J. Restless in the mouse cage-A new genetic model for restless legs syndrome: An Editorial Highlight for "Deficiency of Meis1, a transcriptional regulator, in mice and worms:Neurochemical and behavioral characterizations with implications in the restless legs syndrome" on page 522. J Neurochem 2020; 155:471-474. [PMID: 33011998 DOI: 10.1111/jnc.15165] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2020] [Accepted: 08/25/2020] [Indexed: 11/30/2022]
Abstract
Restless legs syndrome (RLS) is a movement disorder that is characterized by an uncomfortable sensation in the legs, and the urge to move the legs. Meis1 has previously identified as a risk gene for RLS. This Editorial highlights the study by Lyu and colleagues who developed a novel genetic mouse model heterozygous for Meis1 expression in neurons of the central nervous system. Using behavioral tests, the authors established hyperactivity of the mice, reminiscent of symptoms found in RLS patients. In addition, the authors took a closer look at the iron, dopaminergic, and cholinergic system of these mice.
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Affiliation(s)
- Judith Stegmüller
- Department of Neurology, RWTH University Hospital, Aachen, Germany.,RWTH Aachen University, Aachen, Germany.,Research Training Group 2416 MultiSenses-MultiScales, RWTH Aachen University, Aachen, Germany
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50
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Zhang H, Zhang Y, Zhou X, Wright S, Hyle J, Zhao L, An J, Zhao X, Shao Y, Xu B, Lee HM, Chen T, Zhou Y, Chen X, Lu R, Li C. Functional interrogation of HOXA9 regulome in MLLr leukemia via reporter-based CRISPR/Cas9 screen. eLife 2020; 9:e57858. [PMID: 33001025 PMCID: PMC7599066 DOI: 10.7554/elife.57858] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Accepted: 09/30/2020] [Indexed: 12/26/2022] Open
Abstract
Aberrant HOXA9 expression is a hallmark of most aggressive acute leukemias, notably those with KMT2A (MLL) gene rearrangements. HOXA9 overexpression not only predicts poor diagnosis and outcome but also plays a critical role in leukemia transformation and maintenance. However, our current understanding of HOXA9 regulation in leukemia is limited, hindering development of therapeutic strategies. Here, we generated the HOXA9-mCherry knock-in reporter cell lines to dissect HOXA9 regulation. By utilizing the reporter and CRISPR/Cas9 screens, we identified transcription factors controlling HOXA9 expression, including a novel regulator, USF2, whose depletion significantly down-regulated HOXA9 expression and impaired MLLr leukemia cell proliferation. Ectopic expression of Hoxa9 rescued impaired leukemia cell proliferation upon USF2 loss. Cut and Run analysis revealed the direct occupancy of USF2 at HOXA9 promoter in MLLr leukemia cells. Collectively, the HOXA9 reporter facilitated the functional interrogation of the HOXA9 regulome and has advanced our understanding of the molecular regulation network in HOXA9-driven leukemia.
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Affiliation(s)
- Hao Zhang
- Division of Hematology/Oncology, University of Alabama at BirminghamBirminghamUnited States
- O’Neal Comprehensive Cancer Center, University of Alabama at BirminghamBirminghamUnited States
| | - Yang Zhang
- Department of Tumor Cell Biology, St. Jude Children’s Research HospitalMemphisUnited States
- Cancer Biology Program/Comprehensive Cancer Center, St. Jude Children’s Research HospitalMemphisUnited States
| | - Xinyue Zhou
- Division of Hematology/Oncology, University of Alabama at BirminghamBirminghamUnited States
- O’Neal Comprehensive Cancer Center, University of Alabama at BirminghamBirminghamUnited States
| | - Shaela Wright
- Department of Tumor Cell Biology, St. Jude Children’s Research HospitalMemphisUnited States
- Cancer Biology Program/Comprehensive Cancer Center, St. Jude Children’s Research HospitalMemphisUnited States
| | - Judith Hyle
- Department of Tumor Cell Biology, St. Jude Children’s Research HospitalMemphisUnited States
- Cancer Biology Program/Comprehensive Cancer Center, St. Jude Children’s Research HospitalMemphisUnited States
| | - Lianzhong Zhao
- Division of Hematology/Oncology, University of Alabama at BirminghamBirminghamUnited States
- O’Neal Comprehensive Cancer Center, University of Alabama at BirminghamBirminghamUnited States
| | - Jie An
- Division of Hematology/Oncology, University of Alabama at BirminghamBirminghamUnited States
- O’Neal Comprehensive Cancer Center, University of Alabama at BirminghamBirminghamUnited States
| | - Xujie Zhao
- Department of Pharmaceutical Sciences, St. Jude Children’s Research HospitalMemphisUnited States
| | - Ying Shao
- Department of Computational Biology, St. Jude Children’s Research HospitalMemphisUnited States
| | - Beisi Xu
- Department of Computational Biology, St. Jude Children’s Research HospitalMemphisUnited States
| | - Hyeong-Min Lee
- Department of Chemical Biology and Therapeutics, St. Jude Children's Research HospitalMemphisUnited States
| | - Taosheng Chen
- Department of Chemical Biology and Therapeutics, St. Jude Children's Research HospitalMemphisUnited States
| | - Yang Zhou
- Department of Biomedical Engineering School of Engineering, University of Alabama at BirminghamBirminghamUnited States
| | - Xiang Chen
- Department of Computational Biology, St. Jude Children’s Research HospitalMemphisUnited States
| | - Rui Lu
- Division of Hematology/Oncology, University of Alabama at BirminghamBirminghamUnited States
- O’Neal Comprehensive Cancer Center, University of Alabama at BirminghamBirminghamUnited States
| | - Chunliang Li
- Department of Tumor Cell Biology, St. Jude Children’s Research HospitalMemphisUnited States
- Cancer Biology Program/Comprehensive Cancer Center, St. Jude Children’s Research HospitalMemphisUnited States
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