1
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Zeng X, Wang YP, Man CH. Metabolism in Hematopoiesis and Its Malignancy. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2023; 1442:45-64. [PMID: 38228958 DOI: 10.1007/978-981-99-7471-9_4] [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: 01/18/2024]
Abstract
Hematopoietic stem cells (HSCs) are multipotent stem cells that can self-renew and generate all blood cells of different lineages. The system is under tight control in order to maintain a precise equilibrium of the HSC pool and the effective production of mature blood cells to support various biological activities. Cell metabolism can regulate different molecular activities, such as epigenetic modification and cell cycle regulation, and subsequently affects the function and maintenance of HSC. Upon malignant transformation, oncogenic drivers in malignant hematopoietic cells can remodel the metabolic pathways for supporting the oncogenic growth. The dysregulation of metabolism results in oncogene addiction, implying the development of malignancy-specific metabolism-targeted therapy. In this chapter, we will discuss the significance of different metabolic pathways in hematopoiesis, specifically, the distinctive metabolic dependency in hematopoietic malignancies and potential metabolic therapy.
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Affiliation(s)
- Xiaoyuan Zeng
- Division of Haematology, Department of Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, China
| | - Yi-Ping Wang
- Precision Research Center for Refractory Diseases, Institute for Clinical Research, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
| | - Cheuk-Him Man
- Division of Haematology, Department of Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, China.
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2
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Nucleoside transporters and immunosuppressive adenosine signaling in the tumor microenvironment: Potential therapeutic opportunities. Pharmacol Ther 2022; 240:108300. [PMID: 36283452 DOI: 10.1016/j.pharmthera.2022.108300] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2022] [Revised: 10/17/2022] [Accepted: 10/19/2022] [Indexed: 11/30/2022]
Abstract
Adenosine compartmentalization has a profound impact on immune cell function by regulating adenosine localization and, therefore, extracellular signaling capabilities, which suppresses immune cell function in the tumor microenvironment. Nucleoside transporters, responsible for the translocation and cellular compartmentalization of hydrophilic adenosine, represent an understudied yet crucial component of adenosine disposition in the tumor microenvironment. In this review article, we will summarize what is known regarding nucleoside transporter's function within the purinome in relation to currently devised points of intervention (i.e., ectonucleotidases, adenosine receptors) for cancer immunotherapy, alterations in nucleoside transporter expression reported in cancer, and potential avenues for targeting of nucleoside transporters for the desired modulation of adenosine compartmentalization and action. Further, we put forward that nucleoside transporters are an unexplored therapeutic opportunity, and modulation of nucleoside transport processes could attenuate the pathogenic buildup of immunosuppressive adenosine in solid tumors, particularly those enriched with nucleoside transport proteins.
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3
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Cao X, Du X, Jiao H, An Q, Chen R, Fang P, Wang J, Yu B. Carbohydrate-based drugs launched during 2000 -2021. Acta Pharm Sin B 2022; 12:3783-3821. [PMID: 36213536 PMCID: PMC9532563 DOI: 10.1016/j.apsb.2022.05.020] [Citation(s) in RCA: 62] [Impact Index Per Article: 31.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2022] [Revised: 04/18/2022] [Accepted: 05/12/2022] [Indexed: 01/09/2023] Open
Abstract
Carbohydrates are fundamental molecules involved in nearly all aspects of lives, such as being involved in formating the genetic and energy materials, supporting the structure of organisms, constituting invasion and host defense systems, and forming antibiotics secondary metabolites. The naturally occurring carbohydrates and their derivatives have been extensively studied as therapeutic agents for the treatment of various diseases. During 2000 to 2021, totally 54 carbohydrate-based drugs which contain carbohydrate moities as the major structural units have been approved as drugs or diagnostic agents. Here we provide a comprehensive review on the chemical structures, activities, and clinical trial results of these carbohydrate-based drugs, which are categorized by their indications into antiviral drugs, antibacterial/antiparasitic drugs, anticancer drugs, antidiabetics drugs, cardiovascular drugs, nervous system drugs, and other agents.
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Affiliation(s)
- Xin Cao
- Zhongshan Hospital Institute of Clinical Science, Fudan University Shanghai Medical College, Shanghai 200032, China
| | - Xiaojing Du
- Zhongshan Hospital Institute of Clinical Science, Fudan University Shanghai Medical College, Shanghai 200032, China
| | - Heng Jiao
- Zhongshan Hospital Institute of Clinical Science, Fudan University Shanghai Medical College, Shanghai 200032, China
| | - Quanlin An
- Zhongshan Hospital Institute of Clinical Science, Fudan University Shanghai Medical College, Shanghai 200032, China
| | - Ruoxue Chen
- Zhongshan Hospital Institute of Clinical Science, Fudan University Shanghai Medical College, Shanghai 200032, China
| | - Pengfei Fang
- State Key Laboratory of Bio-organic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China
| | - Jing Wang
- State Key Laboratory of Bio-organic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China
| | - Biao Yu
- State Key Laboratory of Bio-organic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China
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4
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Role of Drug Transporters in Elucidating Inter-Individual Variability in Pediatric Chemotherapy-Related Toxicities and Response. Pharmaceuticals (Basel) 2022; 15:ph15080990. [PMID: 36015138 PMCID: PMC9415926 DOI: 10.3390/ph15080990] [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: 07/08/2022] [Revised: 08/01/2022] [Accepted: 08/04/2022] [Indexed: 11/16/2022] Open
Abstract
Pediatric cancer treatment has evolved significantly in recent decades. The implementation of risk stratification strategies and the selection of evidence-based chemotherapy combinations have improved survival outcomes. However, there is large interindividual variability in terms of chemotherapy-related toxicities and, sometimes, the response among this population. This variability is partly attributed to the functional variability of drug-metabolizing enzymes (DME) and drug transporters (DTS) involved in the process of absorption, distribution, metabolism and excretion (ADME). The DTS, being ubiquitous, affects drug disposition across membranes and has relevance in determining chemotherapy response in pediatric cancer patients. Among the factors affecting DTS function, ontogeny or maturation is important in the pediatric population. In this narrative review, we describe the role of drug uptake/efflux transporters in defining pediatric chemotherapy-treatment-related toxicities and responses. Developmental differences in DTS and the consequent implications are also briefly discussed for the most commonly used chemotherapeutic drugs in the pediatric population.
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5
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Wang H, He X, Zhang L, Dong H, Huang F, Xian J, Li M, Chen W, Lu X, Pathak KV, Huang W, Li Z, Zhang L, Nguyen LXT, Yang L, Feng L, Gordon DJ, Zhang J, Pirrotte P, Chen CW, Salhotra A, Kuo YH, Horne D, Marcucci G, Sykes DB, Tiziani S, Jin H, Wang X, Li L. Disruption of dNTP homeostasis by ribonucleotide reductase hyperactivation overcomes AML differentiation blockade. Blood 2022; 139:3752-3770. [PMID: 35439288 PMCID: PMC9247363 DOI: 10.1182/blood.2021015108] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Accepted: 04/07/2022] [Indexed: 01/09/2023] Open
Abstract
Differentiation blockade is a hallmark of acute myeloid leukemia (AML). A strategy to overcome such a blockade is a promising approach against the disease. The lack of understanding of the underlying mechanisms hampers development of such strategies. Dysregulated ribonucleotide reductase (RNR) is considered a druggable target in proliferative cancers susceptible to deoxynucleoside triphosphate (dNTP) depletion. Herein, we report an unanticipated discovery that hyperactivating RNR enables differentiation and decreases leukemia cell growth. We integrate pharmacogenomics and metabolomics analyses to identify that pharmacologically (eg, nelarabine) or genetically upregulating RNR subunit M2 (RRM2) creates a dNTP pool imbalance and overcomes differentiation arrest. Moreover, R-loop-mediated DNA replication stress signaling is responsible for RRM2 activation by nelarabine treatment. Further aggravating dNTP imbalance by depleting the dNTP hydrolase SAM domain and HD domain-containing protein 1 (SAMHD1) enhances ablation of leukemia stem cells by RRM2 hyperactivation. Mechanistically, excessive activation of extracellular signal-regulated kinase (ERK) signaling downstream of the imbalance contributes to cellular outcomes of RNR hyperactivation. A CRISPR screen identifies a synthetic lethal interaction between loss of DUSP6, an ERK-negative regulator, and nelarabine treatment. These data demonstrate that dNTP homeostasis governs leukemia maintenance, and a combination of DUSP inhibition and nelarabine represents a therapeutic strategy.
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Affiliation(s)
- Hanying Wang
- Department of Hematological Malignancies Translational Science, Gehr Family Center for Leukemia Research, Hematologic Malignancies and Stem Cell Transplantation Institute, Beckman Research Institute, City of Hope Medical Center, Duarte, CA
- Department of Medical Oncology and
| | - Xin He
- Department of Hematological Malignancies Translational Science, Gehr Family Center for Leukemia Research, Hematologic Malignancies and Stem Cell Transplantation Institute, Beckman Research Institute, City of Hope Medical Center, Duarte, CA
| | - Lei Zhang
- Department of Hematological Malignancies Translational Science, Gehr Family Center for Leukemia Research, Hematologic Malignancies and Stem Cell Transplantation Institute, Beckman Research Institute, City of Hope Medical Center, Duarte, CA
| | - Haojie Dong
- Department of Hematological Malignancies Translational Science, Gehr Family Center for Leukemia Research, Hematologic Malignancies and Stem Cell Transplantation Institute, Beckman Research Institute, City of Hope Medical Center, Duarte, CA
| | - Feiteng Huang
- Department of Hematological Malignancies Translational Science, Gehr Family Center for Leukemia Research, Hematologic Malignancies and Stem Cell Transplantation Institute, Beckman Research Institute, City of Hope Medical Center, Duarte, CA
- Department of Hematology, Sir Run Run Shaw Hospital, Zhejiang University, Hangzhou, China
| | - Jie Xian
- Department of Hematological Malignancies Translational Science, Gehr Family Center for Leukemia Research, Hematologic Malignancies and Stem Cell Transplantation Institute, Beckman Research Institute, City of Hope Medical Center, Duarte, CA
| | - Min Li
- Department of Information Sciences, Beckman Research Institute and
| | - Wei Chen
- Integrative Genomics Core, Beckman Research Institute, City of Hope Medical Center, Duarte, CA
| | - Xiyuan Lu
- Department of Nutritional Sciences, The University of Texas at Austin, Austin, TX
| | - Khyatiben V Pathak
- Cancer & Cell Biology Division, The Translational Genomics Research Institute, Phoenix, AZ
| | - Wenfeng Huang
- Department of Hematological Malignancies Translational Science, Gehr Family Center for Leukemia Research, Hematologic Malignancies and Stem Cell Transplantation Institute, Beckman Research Institute, City of Hope Medical Center, Duarte, CA
| | - Zheng Li
- Department of Hematological Malignancies Translational Science, Gehr Family Center for Leukemia Research, Hematologic Malignancies and Stem Cell Transplantation Institute, Beckman Research Institute, City of Hope Medical Center, Duarte, CA
- Department of Hematology, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Lianjun Zhang
- Department of Hematological Malignancies Translational Science, Gehr Family Center for Leukemia Research, Hematologic Malignancies and Stem Cell Transplantation Institute, Beckman Research Institute, City of Hope Medical Center, Duarte, CA
| | - Le Xuan Truong Nguyen
- Department of Hematological Malignancies Translational Science, Gehr Family Center for Leukemia Research, Hematologic Malignancies and Stem Cell Transplantation Institute, Beckman Research Institute, City of Hope Medical Center, Duarte, CA
| | - Lu Yang
- Department of Systems Biology, Beckman Research Institute, City of Hope Medical Center, Duarte, CA
| | - Lifeng Feng
- Laboratory of Cancer Biology, Provincial Key Laboratory of Biotherapy in Zhejiang, Sir Run Run Shaw Hospital, Zhejiang University, Hangzhou, China
| | - David J Gordon
- Division of Pediatric Hematology/Oncology, Department of Pediatrics, University of Iowa, Iowa City, IA
| | - Jing Zhang
- McArdle Laboratory for Cancer Research and Wisconsin Blood Cancer Research Institute, University of Wisconsin-Madison, Madison, WI
| | - Patrick Pirrotte
- Cancer & Cell Biology Division, The Translational Genomics Research Institute, Phoenix, AZ
- Cancer & Cell Biology Division, The Translational Genomics Research Institute, Phoenix, AZ
| | - Chun-Wei Chen
- Department of Systems Biology, Beckman Research Institute, City of Hope Medical Center, Duarte, CA
| | | | - Ya-Huei Kuo
- Department of Hematological Malignancies Translational Science, Gehr Family Center for Leukemia Research, Hematologic Malignancies and Stem Cell Transplantation Institute, Beckman Research Institute, City of Hope Medical Center, Duarte, CA
| | - David Horne
- Department of Molecular Medicine, Beckman Research Institute of City of Hope, Duarte, CA
| | - Guido Marcucci
- Department of Hematological Malignancies Translational Science, Gehr Family Center for Leukemia Research, Hematologic Malignancies and Stem Cell Transplantation Institute, Beckman Research Institute, City of Hope Medical Center, Duarte, CA
- Department of Hematology and Hematopoietic Cell Transplantation and
| | - David B Sykes
- Center for Regenerative Medicine, Massachusetts General Hospital, Boston, MA; and
| | - Stefano Tiziani
- Department of Nutritional Sciences, The University of Texas at Austin, Austin, TX
- Department of Pediatrics and
- Department of Oncology, Dell Medical School, LiveSTRONG Cancer Institutes, The University of Texas at Austin, Austin, TX
| | - Hongchuan Jin
- Laboratory of Cancer Biology, Provincial Key Laboratory of Biotherapy in Zhejiang, Sir Run Run Shaw Hospital, Zhejiang University, Hangzhou, China
| | | | - Ling Li
- Department of Hematological Malignancies Translational Science, Gehr Family Center for Leukemia Research, Hematologic Malignancies and Stem Cell Transplantation Institute, Beckman Research Institute, City of Hope Medical Center, Duarte, CA
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Rindiarti A, Okamoto Y, Nakagawa S, Hirose J, Kodama Y, Nishikawa T, Kawano Y. Changes in intracellular activation-related gene expression and induction of Akt contribute to acquired resistance toward nelarabine in CCRF-CEM cell line. Leuk Lymphoma 2022; 63:404-415. [PMID: 35080473 DOI: 10.1080/10428194.2021.1992617] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
Drug resistance is a major problem in treatment with nelarabine, and its resolution requires elucidation of the underlying mechanisms. We established two nelarabine-resistant subclones of the human T-cell lymphoblastic leukemia cell line CCRF-CEM. The resistant subclones showed changes in the expression of several genes related to nelarabine intracellular activation and inhibition of apoptosis. Activation of the Akt protein upon nelarabine treatment was observed in both subclones. The combination treatment with nelarabine and PI3K/Akt inhibitors was shown to inhibit cell growth. Cross-resistance was observed with ara-C and not with vincristine, daunorubicin, or etoposide treatment. Thus, changes in the expression of cellular activation-related genes, inhibition of apoptosis, and induction of Akt may be involved in the development of nelarabine resistance in the CCRF-CEM cell model. The use of different classes of chemotherapeutic agents and combination therapy with PI3K/Akt pathway inhibitors may be used to overcome resistance to nelarabine.
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Affiliation(s)
- Almitra Rindiarti
- Department of Pediatrics, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima City, Japan
| | - Yasuhiro Okamoto
- Department of Pediatrics, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima City, Japan
| | - Shunsuke Nakagawa
- Department of Pediatrics, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima City, Japan
| | - Junko Hirose
- Department of Pediatrics, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima City, Japan
| | - Yuichi Kodama
- Department of Pediatrics, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima City, Japan
| | - Takuro Nishikawa
- Department of Pediatrics, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima City, Japan
| | - Yoshifumi Kawano
- Department of Pediatrics, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima City, Japan
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7
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Xia R, Chen LS, Liu LJ, Xia C, Sun LP. Diversity-Oriented Synthesis of 2-Substituted Purine Nucleosides from Available Nucleosides via the Late-Stage Nitration/Derivatization. HETEROCYCLES 2022. [DOI: 10.3987/com-22-14689] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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8
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Yoshida K, Fujita A, Narazaki H, Asano T, Itoh Y. Drug resistance to nelarabine in leukemia cell lines might be caused by reduced expression of deoxycytidine kinase through epigenetic mechanisms. Cancer Chemother Pharmacol 2021; 89:83-91. [PMID: 34825941 DOI: 10.1007/s00280-021-04373-4] [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: 05/20/2021] [Accepted: 11/11/2021] [Indexed: 10/19/2022]
Abstract
PURPOSE Drug resistance is a serious problem in leukemia therapy. A novel purine nucleoside analogue, nelarabine, is available for the treatment of children with T cell acute lymphoblastic leukemia. We investigated the mechanisms of drug resistance to nelarabine. METHODS Nelarabine-resistant cells were selected by stepwise and continuous exposure to nelarabine using the limiting dilution method in human B and T cell lymphoblastic leukemia cell lines. Expression analysis was performed using real-time polymerase chain reaction, and epigenetic analysis was performed using methylation-specific polymerase chain reaction and chromatin immunoprecipitation. RESULTS The RNA expression level for deoxycytidine kinase (dCK) was decreased in nelarabine-resistant leukemia cells. There were no differences between the parental and nelarabine-resistant leukemia cells in the methylation status of the promoter region of the dCK gene. In the chromatin immune precipitation assay, decreased acetylation of histones H3 and H4 bound to the dCK promoter was seen in the nelarabine-resistant cells when compared to the parental cells. Furthermore, treatment with a novel histone deacetylase inhibitor, vorinostat, promoted the cytotoxic effect of nelarabine along with increased expression of the dCK gene, and it increased acetylation of both histones H3 and H4 bound to the dCK promoter in nelarabine-resistant leukemia cells. The combination index showed that the effect of nelarabine and vorinostat was synergistic. CONCLUSION This study reports that nelarabine with vorinostat can promote cytotoxicity in nelarabine-resistant leukemia cells through epigenetic mechanisms.
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Affiliation(s)
- Keishi Yoshida
- Department of Pediatrics, Nippon Medical School Chiba Hokusoh Hospital, 1715 Kamagari, Inzai, Chiba, 270-1694, Japan
| | - Atsushi Fujita
- Department of Pediatrics, Nippon Medical School Chiba Hokusoh Hospital, 1715 Kamagari, Inzai, Chiba, 270-1694, Japan
| | - Hidehiko Narazaki
- Department of Pediatrics, Nippon Medical School, Inzai, Chiba, Japan
| | - Takeshi Asano
- Department of Pediatrics, Nippon Medical School Chiba Hokusoh Hospital, 1715 Kamagari, Inzai, Chiba, 270-1694, Japan.
| | - Yasuhiko Itoh
- Department of Pediatrics, Nippon Medical School, Inzai, Chiba, Japan
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9
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Rothenburger T, Thomas D, Schreiber Y, Wratil PR, Pflantz T, Knecht K, Digianantonio K, Temple J, Schneider C, Baldauf HM, McLaughlin KM, Rothweiler F, Bilen B, Farmand S, Bojkova D, Costa R, Ferreirós N, Geisslinger G, Oellerich T, Xiong Y, Keppler OT, Wass MN, Michaelis M, Cinatl J. Differences between intrinsic and acquired nucleoside analogue resistance in acute myeloid leukaemia cells. J Exp Clin Cancer Res 2021; 40:317. [PMID: 34641952 PMCID: PMC8507139 DOI: 10.1186/s13046-021-02093-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2021] [Accepted: 09/01/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND SAMHD1 mediates resistance to anti-cancer nucleoside analogues, including cytarabine, decitabine, and nelarabine that are commonly used for the treatment of leukaemia, through cleavage of their triphosphorylated forms. Hence, SAMHD1 inhibitors are promising candidates for the sensitisation of leukaemia cells to nucleoside analogue-based therapy. Here, we investigated the effects of the cytosine analogue CNDAC, which has been proposed to be a SAMHD1 inhibitor, in the context of SAMHD1. METHODS CNDAC was tested in 13 acute myeloid leukaemia (AML) cell lines, in 26 acute lymphoblastic leukaemia (ALL) cell lines, ten AML sublines adapted to various antileukaemic drugs, 24 single cell-derived clonal AML sublines, and primary leukaemic blasts from 24 AML patients. Moreover, 24 CNDAC-resistant sublines of the AML cell lines HL-60 and PL-21 were established. The SAMHD1 gene was disrupted using CRISPR/Cas9 and SAMHD1 depleted using RNAi, and the viral Vpx protein. Forced DCK expression was achieved by lentiviral transduction. SAMHD1 promoter methylation was determined by PCR after treatment of genomic DNA with the methylation-sensitive HpaII endonuclease. Nucleoside (analogue) triphosphate levels were determined by LC-MS/MS. CNDAC interaction with SAMHD1 was analysed by an enzymatic assay and by crystallisation. RESULTS Although the cytosine analogue CNDAC was anticipated to inhibit SAMHD1, SAMHD1 mediated intrinsic CNDAC resistance in leukaemia cells. Accordingly, SAMHD1 depletion increased CNDAC triphosphate (CNDAC-TP) levels and CNDAC toxicity. Enzymatic assays and crystallisation studies confirmed CNDAC-TP to be a SAMHD1 substrate. In 24 CNDAC-adapted acute myeloid leukaemia (AML) sublines, resistance was driven by DCK (catalyses initial nucleoside phosphorylation) loss. CNDAC-adapted sublines displayed cross-resistance only to other DCK substrates (e.g. cytarabine, decitabine). Cell lines adapted to drugs not affected by DCK or SAMHD1 remained CNDAC sensitive. In cytarabine-adapted AML cells, increased SAMHD1 and reduced DCK levels contributed to cytarabine and CNDAC resistance. CONCLUSION Intrinsic and acquired resistance to CNDAC and related nucleoside analogues are driven by different mechanisms. The lack of cross-resistance between SAMHD1/ DCK substrates and non-substrates provides scope for next-line therapies after treatment failure.
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Affiliation(s)
- Tamara Rothenburger
- Institute for Medical Virology, Goethe-University, Frankfurt am Main, Germany
- Faculty of Biological Sciences, Goethe-University, Frankfurt am Main, Germany
| | - Dominique Thomas
- Pharmazentrum frankfurt/ZAFES, Institute of Clinical Pharmacology, Goethe University of Frankfurt, Frankfurt, Germany
| | - Yannick Schreiber
- Pharmazentrum frankfurt/ZAFES, Institute of Clinical Pharmacology, Goethe University of Frankfurt, Frankfurt, Germany
| | - Paul R Wratil
- Max von Pettenkofer Institute & Gene Center, Virology, National Reference Center for Retroviruses, Faculty of Medicine, LMU München, Munich, Germany
- German Center for Infection Research (DZIF), Partner Site Munich, Munich, Germany
| | - Tamara Pflantz
- Max von Pettenkofer Institute & Gene Center, Virology, National Reference Center for Retroviruses, Faculty of Medicine, LMU München, Munich, Germany
- German Center for Infection Research (DZIF), Partner Site Munich, Munich, Germany
| | - Kirsten Knecht
- Department of Molecular Biophysics and Biochemistry, Yale University, New Haven, CT, USA
| | - Katie Digianantonio
- Department of Molecular Biophysics and Biochemistry, Yale University, New Haven, CT, USA
| | - Joshua Temple
- Department of Molecular Biophysics and Biochemistry, Yale University, New Haven, CT, USA
| | - Constanze Schneider
- Department of Pediatric Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA, USA
| | - Hanna-Mari Baldauf
- Max von Pettenkofer Institute & Gene Center, Virology, National Reference Center for Retroviruses, Faculty of Medicine, LMU München, Munich, Germany
| | | | - Florian Rothweiler
- Institute for Medical Virology, Goethe-University, Frankfurt am Main, Germany
| | - Berna Bilen
- Faculty of Biological Sciences, Goethe-University, Frankfurt am Main, Germany
| | - Samira Farmand
- Faculty of Biological Sciences, Goethe-University, Frankfurt am Main, Germany
| | - Denisa Bojkova
- Institute for Medical Virology, Goethe-University, Frankfurt am Main, Germany
| | - Rui Costa
- Institute for Medical Virology, Goethe-University, Frankfurt am Main, Germany
| | - Nerea Ferreirós
- Pharmazentrum frankfurt/ZAFES, Institute of Clinical Pharmacology, Goethe University of Frankfurt, Frankfurt, Germany
| | - Gerd Geisslinger
- Pharmazentrum frankfurt/ZAFES, Institute of Clinical Pharmacology, Goethe University of Frankfurt, Frankfurt, Germany
- Fraunhofer Institute for Molecular Biology and Applied Ecology (IME), Project group Translational Medicine and Pharmacology (TMP), Frankfurt am Main, Germany
| | - Thomas Oellerich
- Department of Hematology/Oncology, Goethe-University, Frankfurt am Main, Germany
- Molecular Diagnostics Unit, Frankfurt Cancer Institute, Frankfurt am Main, Germany
- German Cancer Consortium/German Cancer Research Center, Heidelberg, Germany
| | - Yong Xiong
- Department of Molecular Biophysics and Biochemistry, Yale University, New Haven, CT, USA
| | - Oliver T Keppler
- Max von Pettenkofer Institute & Gene Center, Virology, National Reference Center for Retroviruses, Faculty of Medicine, LMU München, Munich, Germany
- German Center for Infection Research (DZIF), Partner Site Munich, Munich, Germany
| | - Mark N Wass
- School of Biosciences, University of Kent, Canterbury, UK
| | | | - Jindrich Cinatl
- Institute for Medical Virology, Goethe-University, Frankfurt am Main, Germany.
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10
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Rasmussen HB, Jürgens G, Thomsen R, Taboureau O, Zeth K, Hansen PE, Hansen PR. Cellular Uptake and Intracellular Phosphorylation of GS-441524: Implications for Its Effectiveness against COVID-19. Viruses 2021; 13:v13071369. [PMID: 34372575 PMCID: PMC8310262 DOI: 10.3390/v13071369] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Revised: 06/27/2021] [Accepted: 07/07/2021] [Indexed: 12/22/2022] Open
Abstract
GS-441524 is an adenosine analog and the parent nucleoside of the prodrug remdesivir, which has received emergency approval for treatment of COVID-19. Recently, GS-441524 has been proposed to be effective in the treatment of COVID-19, perhaps even being superior to remdesivir for treatment of this disease. Evaluation of the clinical effectiveness of GS-441524 requires understanding of its uptake and intracellular conversion to GS-441524 triphosphate, the active antiviral substance. We here discuss the potential impact of these pharmacokinetic steps of GS-441524 on the formation of its active antiviral substance and effectiveness for treatment of COVID-19. Available protein expression data suggest that several adenosine transporters are expressed at only low levels in the epithelial cells lining the alveoli in the lungs, i.e., the alveolar cells or pneumocytes from healthy lungs. This may limit uptake of GS-441524. Importantly, cellular uptake of GS-441524 may be reduced during hypoxia and inflammation due to decreased expression of adenosine transporters. Similarly, hypoxia and inflammation may lead to reduced expression of adenosine kinase, which is believed to convert GS-441524 to GS-441524 monophosphate, the perceived rate-limiting step in the intracellular formation of GS-441524 triphosphate. Moreover, increases in extracellular and intracellular levels of adenosine, which may occur during critical illnesses, has the potential to competitively decrease cellular uptake and phosphorylation of GS-441524. Taken together, tissue hypoxia and severe inflammation in COVID-19 may lead to reduced uptake and phosphorylation of GS-441524 with lowered therapeutic effectiveness as a potential outcome. Hypoxia may be particularly critical to the ability of GS-441524 to eliminate SARS-CoV-2 from tissues with low basal expression of adenosine transporters, such as alveolar cells. This knowledge may also be relevant to treatments with other antiviral adenosine analogs and anticancer adenosine analogs as well.
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Affiliation(s)
- Henrik Berg Rasmussen
- Institute of Biological Psychiatry, Mental Health Centre Sct. Hans, DK-4000 Roskilde, Denmark
- Department of Science and Environment, Roskilde University Center, DK-4000 Roskilde, Denmark; (K.Z.); (P.E.H.)
- Correspondence:
| | - Gesche Jürgens
- Clinical Pharmacology Unit, Zealand University Hospital, DK-4000 Roskilde, Denmark;
| | - Ragnar Thomsen
- Section of Forensic Chemistry, Department of Forensic Medicine, Faculty of Health Sciences, University of Copenhagen, DK-2100 Copenhagen, Denmark;
| | - Olivier Taboureau
- INSERM U1133, CNRS UMR 8251, Université de Paris, F-75013 Paris, France;
| | - Kornelius Zeth
- Department of Science and Environment, Roskilde University Center, DK-4000 Roskilde, Denmark; (K.Z.); (P.E.H.)
| | - Poul Erik Hansen
- Department of Science and Environment, Roskilde University Center, DK-4000 Roskilde, Denmark; (K.Z.); (P.E.H.)
| | - Peter Riis Hansen
- Department of Cardiology, Herlev and Gentofte Hospital, DK-2900 Hellerup, Denmark;
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11
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Candoni A, Lazzarotto D, Petruzzellis G. Safety of nelarabine in adults with relapsed or refractory T-cell acute lymphoblastic leukemia/lymphoma. Expert Opin Drug Saf 2021; 20:751-756. [PMID: 33866913 DOI: 10.1080/14740338.2021.1919621] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
INTRODUCTION T-cell acute lymphoblastic leukemia (T-ALL) and lymphoma (T-LBL) are aggressive hematological malignancies accounting for 15-20% of adult acute lymphoproliferative diseases. Treatment of relapsed/refractory (R/R) T-ALL/T-LBL is challenging with very few therapeutic options. AREAS COVERED This report provides a concise review on the efficacy and safety of nelarabine monotherapy in adults with R/R T-ALL and T-LBL. EXPERT OPINION Nelarabine is approved for the treatment of adults with R/R T-ALL/T-LBL in the setting of third or more line of therapy. Hematological and neurological toxicities are the most frequent adverse events. Grade 3 and 4 neutropenia and thrombocytopenia are common, however with treatment-related deaths accounting only for 1-2% of patients. Neurological toxicity is typically characterized by a reversible peripheral neuropathy, usually mild or moderate and without treatment delay. Other neurological (somnolence and depressed level of consciousness) or extra-neurological adverse events are uncommon and rarely severe. In conclusion, nelarabine is a well tolerated and effective salvage therapy in patients with R/R T-ALL/T-LBL and has acquired an important role as a bridge-therapy to allogeneic stem cell transplantation.
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Affiliation(s)
- Anna Candoni
- Division of Hematology and SCT, Azienda Sanitaria Universitaria Friuli Centrale (ASUFC), University Hospital of Udine (Italy)
| | - Davide Lazzarotto
- Division of Hematology and SCT, Azienda Sanitaria Universitaria Friuli Centrale (ASUFC), University Hospital of Udine (Italy)
| | - Giuseppe Petruzzellis
- Division of Hematology and SCT, Azienda Sanitaria Universitaria Friuli Centrale (ASUFC), University Hospital of Udine (Italy)
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12
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Rothenburger T, McLaughlin KM, Herold T, Schneider C, Oellerich T, Rothweiler F, Feber A, Fenton TR, Wass MN, Keppler OT, Michaelis M, Cinatl J. SAMHD1 is a key regulator of the lineage-specific response of acute lymphoblastic leukaemias to nelarabine. Commun Biol 2020; 3:324. [PMID: 32581304 PMCID: PMC7314829 DOI: 10.1038/s42003-020-1052-8] [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: 12/31/2019] [Accepted: 06/02/2020] [Indexed: 12/31/2022] Open
Abstract
The nucleoside analogue nelarabine, the prodrug of arabinosylguanine (AraG), is effective against T-cell acute lymphoblastic leukaemia (T-ALL) but not against B-cell ALL (B-ALL). The underlying mechanisms have remained elusive. Here, data from pharmacogenomics studies and a panel of ALL cell lines reveal an inverse correlation between nelarabine sensitivity and the expression of SAMHD1, which can hydrolyse and inactivate triphosphorylated nucleoside analogues. Lower SAMHD1 abundance is detected in T-ALL than in B-ALL in cell lines and patient-derived leukaemic blasts. Mechanistically, T-ALL cells display increased SAMHD1 promoter methylation without increased global DNA methylation. SAMHD1 depletion sensitises B-ALL cells to AraG, while ectopic SAMHD1 expression in SAMHD1-null T-ALL cells induces AraG resistance. SAMHD1 has a larger impact on nelarabine/AraG than on cytarabine in ALL cells. Opposite effects are observed in acute myeloid leukaemia cells, indicating entity-specific differences. In conclusion, SAMHD1 promoter methylation and, in turn, SAMHD1 expression levels determine ALL cell response to nelarabine.
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Affiliation(s)
- Tamara Rothenburger
- Institut für Medizinische Virologie, Klinikum der Goethe-Universität, Paul Ehrlich-Straße 40, 60596, Frankfurt am Main, Germany
| | | | - Tobias Herold
- Department of Medicine III, University Hospital, LMU Munich, Marchioninistraße 15, 81377, Munich, Germany
- Research Unit Apoptosis in Hematopoietic Stem Cells, Helmholtz Zentrum München, German Research Center for Environmental Health (HMGU), Feodor-Lynenstraße 21, 81377, Munich, Germany
| | - Constanze Schneider
- Institut für Medizinische Virologie, Klinikum der Goethe-Universität, Paul Ehrlich-Straße 40, 60596, Frankfurt am Main, Germany
- Department of Medicine II, Hematology/Oncology, Goethe-Universität, Frankfurt am Main, Germany; Frankfurt Cancer Institute, Goethe University, Theodor-Stern-Kai 7, 60590, Frankfurt am Main, Germany
| | - Thomas Oellerich
- Department of Medicine II, Hematology/Oncology, Goethe-Universität, Theodor-Stern-Kai 7, 60590, Frankfurt am Main, Germany
- Frankfurt Cancer Institute, Goethe University, Theodor-Stern-Kai 7, 60590, Frankfurt am Main, Germany
- German Cancer Consortium/German Cancer Research Center, Im Neuenheimer Feld 280, 69120, Heidelberg, Germany
| | - Florian Rothweiler
- Institut für Medizinische Virologie, Klinikum der Goethe-Universität, Paul Ehrlich-Straße 40, 60596, Frankfurt am Main, Germany
| | - Andrew Feber
- Division of Surgery and Interventional Science, University College London, Gower Street, London, WC1E 6BT, UK
| | - Tim R Fenton
- School of Biosciences, University of Kent, Canterbury, CT2 7NJ, UK
| | - Mark N Wass
- School of Biosciences, University of Kent, Canterbury, CT2 7NJ, UK
| | - Oliver T Keppler
- Faculty of Medicine, Max von Pettenkofer Institute, Virology, LMU München, Pettenkoferstraße 9a, 80336, Munich, Germany
| | - Martin Michaelis
- School of Biosciences, University of Kent, Canterbury, CT2 7NJ, UK.
| | - Jindrich Cinatl
- Institut für Medizinische Virologie, Klinikum der Goethe-Universität, Paul Ehrlich-Straße 40, 60596, Frankfurt am Main, Germany.
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13
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Teng H, Wei W, Li Q, Xue M, Shi X, Li X, Mao F, Sun Z. Prevalence and architecture of posttranscriptionally impaired synonymous mutations in 8,320 genomes across 22 cancer types. Nucleic Acids Res 2020; 48:1192-1205. [PMID: 31950163 PMCID: PMC7026592 DOI: 10.1093/nar/gkaa019] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2019] [Accepted: 01/07/2020] [Indexed: 02/06/2023] Open
Abstract
Somatic synonymous mutations are one of the most frequent genetic variants occurring in the coding region of cancer genomes, while their contributions to cancer development remain largely unknown. To assess whether synonymous mutations involved in post-transcriptional regulation contribute to the genetic etiology of cancers, we collected whole exome data from 8,320 patients across 22 cancer types. By employing our developed algorithm, PIVar, we identified a total of 22,948 posttranscriptionally impaired synonymous SNVs (pisSNVs) spanning 2,042 genes. In addition, 35 RNA binding proteins impacted by these identified pisSNVs were significantly enriched. Remarkably, we discovered markedly elevated ratio of somatic pisSNVs across all 22 cancer types, and a high pisSNV ratio was associated with worse patient survival in five cancer types. Intriguing, several well-established cancer genes, including PTEN, RB1 and PIK3CA, appeared to contribute to tumorigenesis at both protein function and posttranscriptional regulation levels, whereas some pisSNV-hosted genes, including UBR4, EP400 and INTS1, exerted their function during carcinogenesis mainly via posttranscriptional mechanisms. Moreover, we predicted three drugs associated with two pisSNVs, and numerous compounds associated with expression signature of pisSNV-hosted genes. Our study reveals the prevalence and clinical relevance of pisSNVs in cancers, and emphasizes the importance of considering posttranscriptional impaired synonymous mutations in cancer biology.
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Affiliation(s)
- Huajing Teng
- Beijing Institutes of Life Science, Chinese Academy of Sciences, Beijing 100101, China.,Key laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Radiation Oncology, Peking University Cancer Hospital & Institute, Beijing 100142, China
| | - Wenqing Wei
- Beijing Institutes of Life Science, Chinese Academy of Sciences, Beijing 100101, China.,University of Chinese Academy of Sciences, Beijing 100049, China
| | - Qinglan Li
- Beijing Institutes of Life Science, Chinese Academy of Sciences, Beijing 100101, China.,University of Chinese Academy of Sciences, Beijing 100049, China
| | - Meiying Xue
- Beijing Institutes of Life Science, Chinese Academy of Sciences, Beijing 100101, China.,University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xiaohui Shi
- Sino-Danish college, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xianfeng Li
- Beijing Institutes of Life Science, Chinese Academy of Sciences, Beijing 100101, China.,Key laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Radiation Oncology, Peking University Cancer Hospital & Institute, Beijing 100142, China
| | - Fengbiao Mao
- Beijing Institutes of Life Science, Chinese Academy of Sciences, Beijing 100101, China
| | - Zhongsheng Sun
- Beijing Institutes of Life Science, Chinese Academy of Sciences, Beijing 100101, China
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14
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Abstract
In this Review, Rashkovan et al. discuss the role of cancer metabolic circuitries feeding anabolism and redox potential in leukemia development and recent progress in translating these important findings to the clinic. Leukemia cell proliferation requires up-regulation and rewiring of metabolic pathways to feed anabolic cell growth. Oncogenic drivers directly and indirectly regulate metabolic pathways, and aberrant metabolism is central not only for leukemia proliferation and survival, but also mediates oncogene addiction with significant implications for the development of targeted therapies. This review explores leukemia metabolic circuitries feeding anabolism, redox potential, and energy required for tumor propagation with an emphasis on emerging therapeutic opportunities.
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Affiliation(s)
- Marissa Rashkovan
- Institute for Cancer Genetics, Columbia University, New York, NY 10032, USA
| | - Adolfo Ferrando
- Institute for Cancer Genetics, Columbia University, New York, NY 10032, USA.,Department of Pediatrics, Columbia University, New York, NY 10032, USA.,Department of Pathology and Cell Biology, Columbia University, New York, NY 10032, USA
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15
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Akahane K, Murakami Y, Kagami K, Abe M, Harama D, Shinohara T, Watanabe A, Goi K, Nishi R, Yamauchi T, Kimura S, Takita J, Look AT, Minegishi M, Sugita K, Inukai T. High ENT1 and DCK gene expression levels are a potential biomarker to predict favorable response to nelarabine therapy in T-cell acute lymphoblastic leukemia. Hematol Oncol 2019; 37:516-519. [PMID: 31335977 DOI: 10.1002/hon.2654] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2019] [Revised: 07/15/2019] [Accepted: 07/16/2019] [Indexed: 11/07/2022]
Affiliation(s)
- Koshi Akahane
- Department of Pediatrics, School of Medicine, University of Yamanashi, Chuo, Japan
| | - Yasushi Murakami
- Department of Pediatrics, School of Medicine, University of Yamanashi, Chuo, Japan
| | - Keiko Kagami
- Department of Pediatrics, School of Medicine, University of Yamanashi, Chuo, Japan
| | - Masako Abe
- Department of Pediatrics, School of Medicine, University of Yamanashi, Chuo, Japan
| | - Daisuke Harama
- Department of Pediatrics, School of Medicine, University of Yamanashi, Chuo, Japan
| | - Tamao Shinohara
- Department of Pediatrics, School of Medicine, University of Yamanashi, Chuo, Japan
| | - Atsushi Watanabe
- Department of Pediatrics, School of Medicine, University of Yamanashi, Chuo, Japan
| | - Kumiko Goi
- Department of Pediatrics, School of Medicine, University of Yamanashi, Chuo, Japan
| | - Rie Nishi
- Department of Hematology and Oncology, Faculty of Medical Science, University of Fukui, Matsuoka, Japan
| | - Takahiro Yamauchi
- Department of Hematology and Oncology, Faculty of Medical Science, University of Fukui, Matsuoka, Japan
| | - Shunsuke Kimura
- Department of Pediatrics, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan.,Department of Pediatrics, Hiroshima University Graduate School of Biomedical Sciences, Hiroshima, Japan
| | - Junko Takita
- Department of Pediatrics, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - A Thomas Look
- Department of Pediatric Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, Massachusetts
| | | | - Kanji Sugita
- Department of Pediatrics, School of Medicine, University of Yamanashi, Chuo, Japan
| | - Takeshi Inukai
- Department of Pediatrics, School of Medicine, University of Yamanashi, Chuo, Japan
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16
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Tsesmetzis N, Paulin CBJ, Rudd SG, Herold N. Nucleobase and Nucleoside Analogues: Resistance and Re-Sensitisation at the Level of Pharmacokinetics, Pharmacodynamics and Metabolism. Cancers (Basel) 2018; 10:cancers10070240. [PMID: 30041457 PMCID: PMC6071274 DOI: 10.3390/cancers10070240] [Citation(s) in RCA: 73] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2018] [Revised: 07/18/2018] [Accepted: 07/20/2018] [Indexed: 02/07/2023] Open
Abstract
Antimetabolites, in particular nucleobase and nucleoside analogues, are cytotoxic drugs that, starting from the small field of paediatric oncology, in combination with other chemotherapeutics, have revolutionised clinical oncology and transformed cancer into a curable disease. However, even though combination chemotherapy, together with radiation, surgery and immunotherapy, can nowadays cure almost all types of cancer, we still fail to achieve this for a substantial proportion of patients. The understanding of differences in metabolism, pharmacokinetics, pharmacodynamics, and tumour biology between patients that can be cured and patients that cannot, builds the scientific basis for rational therapy improvements. Here, we summarise current knowledge of how tumour-specific and patient-specific factors can dictate resistance to nucleobase/nucleoside analogues, and which strategies of re-sensitisation exist. We revisit well-established hurdles to treatment efficacy, like the blood-brain barrier and reduced deoxycytidine kinase activity, but will also discuss the role of novel resistance factors, such as SAMHD1. A comprehensive appreciation of the complex mechanisms that underpin the failure of chemotherapy will hopefully inform future strategies of personalised medicine.
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Affiliation(s)
- Nikolaos Tsesmetzis
- Childhood Cancer Research Unit, Department of Women's and Children's Health, Karolinska Institutet, 171 77 Stockholm, Sweden.
| | - Cynthia B J Paulin
- Science for Life Laboratory, Department of Oncology-Pathology, Karolinska Institutet, 171 65 Stockholm, Sweden.
| | - Sean G Rudd
- Science for Life Laboratory, Department of Oncology-Pathology, Karolinska Institutet, 171 65 Stockholm, Sweden.
| | - Nikolas Herold
- Childhood Cancer Research Unit, Department of Women's and Children's Health, Karolinska Institutet, 171 77 Stockholm, Sweden.
- Paediatric Oncology, Theme of Children's and Women's Health, Karolinska University Hospital Solna, 171 76 Stockholm, Sweden.
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17
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In-silico gene essentiality analysis of polyamine biosynthesis reveals APRT as a potential target in cancer. Sci Rep 2017; 7:14358. [PMID: 29084986 PMCID: PMC5662602 DOI: 10.1038/s41598-017-14067-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2017] [Accepted: 10/05/2017] [Indexed: 12/31/2022] Open
Abstract
Constraint-based modeling for genome-scale metabolic networks has emerged in the last years as a promising approach to elucidate drug targets in cancer. Beyond the canonical biosynthetic routes to produce biomass, it is of key importance to focus on metabolic routes that sustain the proliferative capacity through the regulation of other biological means in order to improve in-silico gene essentiality analyses. Polyamines are polycations with central roles in cancer cell proliferation, through the regulation of transcription and translation among other things, but are typically neglected in in silico cancer metabolic models. In this study, we analysed essential genes for the biosynthesis of polyamines. Our analysis corroborates the importance of previously known regulators of the pathway, such as Adenosylmethionine Decarboxylase 1 (AMD1) and uncovers novel enzymes predicted to be relevant for polyamine homeostasis. We focused on Adenine Phosphoribosyltransferase (APRT) and demonstrated the detrimental consequence of APRT gene silencing on different leukaemia cell lines. Our results highlight the importance of revisiting the metabolic models used for in-silico gene essentiality analyses in order to maximize the potential for drug target identification in cancer.
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18
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Vector-independent transmembrane transport of oligodeoxyribonucleotides involves p38 mitogen activated protein kinase phosphorylation. Sci Rep 2017; 7:13571. [PMID: 29051621 PMCID: PMC5648841 DOI: 10.1038/s41598-017-14099-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2017] [Accepted: 10/02/2017] [Indexed: 11/20/2022] Open
Abstract
The main roles of equilibrative nucleoside transporters (ENTs) and concentrative nucleoside transporters (CNTs) are to transfer single nucleosides and analogues for the nucleic acid salvage pathway. Oligodeoxyribonucleotides (ODNs) can be transported into the cytoplasm or nucleus of cells under certain conditions. Among ODNs composed of a single type of nucleotide, the transport efficiency differs with the length and nucleotide composition of the ODNs and varies in different types of leukaemia cells; among the 5 tested random sequence ODNs and 3 aptamers with varying sequences, the data showed that some sequences were associated with significantly higher transport efficiency than others. The transport of ODNs was sodium, energy, and pH-independent, membrane protein-dependent, substrate nonspecific for ODNs and 4-nitrobenzylthioinosine (NBMPR)-insensitive, but it showed a low sensitivity to dipyridamole (IC50 = 35.44 µmol/L), distinguishing it from ENT1-4 and CNTs. The delivery efficiency of ODNs was superior to that of Lipofection and Nucleofection, demonstrating its potential applications in research or therapeutics. Moreover, this process was associated with p38 mitogen activated protein kinase (p38MAPK) instead of c-Jun N-terminal kinase (JNK) signalling pathways. We have denoted ODN transmembrane transport as equilibrative nucleic acid transport (ENAT). Overall, these findings indicate a new approach and mechanism for transmembrane transport of ODNs.
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19
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Zwaan CM, Kowalczyk J, Schmitt C, Bielorai B, Russo MW, Woessner M, Ranganathan S, Leverger G. Safety and efficacy of nelarabine in children and young adults with relapsed or refractory T-lineage acute lymphoblastic leukaemia or T-lineage lymphoblastic lymphoma: results of a phase 4 study. Br J Haematol 2017; 179:284-293. [PMID: 28771663 DOI: 10.1111/bjh.14874] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2017] [Accepted: 06/19/2017] [Indexed: 01/03/2023]
Abstract
Nelarabine is an antineoplastic agent approved for the treatment of relapsed/refractory T-lineage acute lymphoblastic leukaemia (T-ALL) or T-lineage acute lymphoblastic lymphoma (T-LBL). The purpose of this phase 4, multicentre, single-arm, observational, open-label trial was to provide additional data on the safety and efficacy of nelarabine under licensed conditions of use in children and young adults ≤21 years of age. Patients (N = 28) had a mean ± standard deviation age of 11·5 ± 4·6 years; 71% were male and 61% had a diagnosis of T-ALL. Adverse events (AEs) and treatment-related AEs were experienced by 46% and 21%, respectively, and included few haematological AEs and no haematological serious AEs. Neurological AEs from one of four predefined categories (peripheral and central nervous systems, mental status change and uncategorized) were reported in four patients. There were no AE-related treatment discontinuations/withdrawals. The overall response rate was 39.3%: complete response (CR), 35.7%; CR without full haematological recovery (CR*), 3.6%. Post-treatment stem cell transplantation was performed for 46% of the cohort. Median overall survival (OS) was 3·35 months for non-responders and not reached for responders (CR + CR*). The response rate, median OS, and safety profile of nelarabine in this disease setting and population were consistent with those reported previously.
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Affiliation(s)
- Christian Michel Zwaan
- Department of Paediatric Oncology, Erasmus MC-Sophia Children's Hospital, Rotterdam, The Netherlands
| | - Jerzy Kowalczyk
- Department of Paediatric Haematology, Oncology and Transplantology, Medical University, Lublin, Poland
| | - Claudine Schmitt
- Department of Haematology-Oncology-Paediatrics, Children's Hospital, Nancy, France
| | - Bella Bielorai
- Department of Paediatric Haematology-Oncology & BMT, Sheba Medical Centre, Ramat Gan, Israel
| | - Mark W Russo
- Novartis Pharmaceuticals Corporation, East Hanover, NJ, USA
| | - Mary Woessner
- Novartis Pharmaceuticals Corporation, East Hanover, NJ, USA
| | | | - Guy Leverger
- Department of Paediatric Onco-Haematology, APHP, Armand Trousseau Hospital, Paris, France
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20
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Sripornsawan P, Okamoto Y, Nishikawa T, Kodama Y, Yamaki Y, Kurauchi K, Tanabe T, Nakagawa S, Shinkoda Y, Imuta N, Kawano Y. Gene expression ratio as a predictive determinant of nelarabine chemosensitivity in T-lymphoblastic leukemia/lymphoma. Pediatr Blood Cancer 2017; 64:250-253. [PMID: 27576612 DOI: 10.1002/pbc.26214] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/12/2015] [Revised: 07/13/2016] [Accepted: 07/21/2016] [Indexed: 12/19/2022]
Abstract
BACKGROUND Nelarabine has been used for the treatment of T-cell malignancies including T-acute lymphoblastic leukemia (T-ALL)/T-lymphoblastic lymphoma. However, the mechanisms that underlie the susceptibility or resistance to nelarabine have not been fully elucidated. The aim of this study was to determine the significance of nelarabine transport and metabolism in the context of nelarabine cytotoxicity. PROCEDURE The expression profiles of six genes in the nelarabine pathway were analyzed in blast cells from six patients with T-ALL as well as in three T-ALL cell lines. In vitro cytotoxicity (LC50 of 9-β-d-arabinofuranosylguanine [ara-G]) was evaluated. RESULTS The mRNA expression of ENT1, DCK, CDA, NT5C2, RRM1, and RRM2 in patients showed inter-individual variability and was not correlated with the LC50 of ara-G. However, the ratio of (ENT1 × DCK)/(CDA × RRM1) expression was significantly correlated with LC50 (r = -0.831, P = 0.0405). CONCLUSIONS Chemosensitivity to nelarabine is influenced by the balance of the expression of these four genes, and the ratio of their expression predicts the response of T-cell malignancies to nelarabine.
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Affiliation(s)
- Pornpun Sripornsawan
- Department of Pediatrics, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan.,Department of Pediatrics, Faculty of Medicine, Prince of Songkla University, Hat Yai, Songkhla, Thailand
| | - Yasuhiro Okamoto
- Department of Pediatrics, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan
| | - Takuro Nishikawa
- Department of Pediatrics, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan
| | - Yuichi Kodama
- Department of Pediatrics, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan
| | - Yuni Yamaki
- Department of Pediatrics, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan
| | - Koichiro Kurauchi
- Department of Pediatrics, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan
| | - Takayuki Tanabe
- Department of Pediatrics, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan
| | - Shunsuke Nakagawa
- Department of Pediatrics, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan
| | - Yuichi Shinkoda
- Department of Pediatrics, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan
| | - Naoko Imuta
- Department of Pediatrics, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan
| | - Yoshifumi Kawano
- Department of Pediatrics, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan
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21
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Shelton J, Lu X, Hollenbaugh JA, Cho JH, Amblard F, Schinazi RF. Metabolism, Biochemical Actions, and Chemical Synthesis of Anticancer Nucleosides, Nucleotides, and Base Analogs. Chem Rev 2016; 116:14379-14455. [PMID: 27960273 DOI: 10.1021/acs.chemrev.6b00209] [Citation(s) in RCA: 235] [Impact Index Per Article: 29.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Nucleoside, nucleotide, and base analogs have been in the clinic for decades to treat both viral pathogens and neoplasms. More than 20% of patients on anticancer chemotherapy have been treated with one or more of these analogs. This review focuses on the chemical synthesis and biology of anticancer nucleoside, nucleotide, and base analogs that are FDA-approved and in clinical development since 2000. We highlight the cellular biology and clinical biology of analogs, drug resistance mechanisms, and compound specificity towards different cancer types. Furthermore, we explore analog syntheses as well as improved and scale-up syntheses. We conclude with a discussion on what might lie ahead for medicinal chemists, biologists, and physicians as they try to improve analog efficacy through prodrug strategies and drug combinations.
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Affiliation(s)
- Jadd Shelton
- Center for AIDS Research, Laboratory of Biochemical Pharmacology, Department of Pediatrics, Emory University School of Medicine , 1760 Haygood Drive, NE, Atlanta, Georgia 30322, United States
| | - Xiao Lu
- Center for AIDS Research, Laboratory of Biochemical Pharmacology, Department of Pediatrics, Emory University School of Medicine , 1760 Haygood Drive, NE, Atlanta, Georgia 30322, United States
| | - Joseph A Hollenbaugh
- Center for AIDS Research, Laboratory of Biochemical Pharmacology, Department of Pediatrics, Emory University School of Medicine , 1760 Haygood Drive, NE, Atlanta, Georgia 30322, United States
| | - Jong Hyun Cho
- Center for AIDS Research, Laboratory of Biochemical Pharmacology, Department of Pediatrics, Emory University School of Medicine , 1760 Haygood Drive, NE, Atlanta, Georgia 30322, United States
| | - Franck Amblard
- Center for AIDS Research, Laboratory of Biochemical Pharmacology, Department of Pediatrics, Emory University School of Medicine , 1760 Haygood Drive, NE, Atlanta, Georgia 30322, United States
| | - Raymond F Schinazi
- Center for AIDS Research, Laboratory of Biochemical Pharmacology, Department of Pediatrics, Emory University School of Medicine , 1760 Haygood Drive, NE, Atlanta, Georgia 30322, United States
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22
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Lonetti A, Cappellini A, Bertaina A, Locatelli F, Pession A, Buontempo F, Evangelisti C, Evangelisti C, Orsini E, Zambonin L, Neri LM, Martelli AM, Chiarini F. Improving nelarabine efficacy in T cell acute lymphoblastic leukemia by targeting aberrant PI3K/AKT/mTOR signaling pathway. J Hematol Oncol 2016; 9:114. [PMID: 27776559 PMCID: PMC5075755 DOI: 10.1186/s13045-016-0344-4] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2016] [Accepted: 10/14/2016] [Indexed: 11/21/2022] Open
Abstract
Background Although in recent years, the introduction of novel chemotherapy protocols has improved the outcome of T cell acute lymphoblastic leukemia (T-ALL) patients, refractory and/or relapsing disease remains a foremost concern. In this context, a major contribution was provided by the introduction of the nucleoside analog nelarabine, approved for salvage treatment of T-ALL patients with refractory/relapsed disease. However, nelarabine could induce a life-threatening, dose-dependent neurotoxicity. To improve nelarabine efficacy, we have analyzed its molecular targets, testing selective inhibitors of such targets in combination with nelarabine. Methods The effectiveness of nelarabine as single agent or in combination with PI3K, Bcl2, and MEK inhibitors was evaluated on human T-ALL cell lines and primary T-ALL refractory/relapsed lymphoblasts. The efficacy of signal modulators in terms of cytotoxicity, induction of apoptosis, and changes in gene and protein expression was assessed by flow cytometry, western blotting, and quantitative real-time PCR in T-ALL settings. Results Treatment with nelarabine as a single agent identified two groups of T-ALL cell lines, one sensitive and one resistant to the drug. Whereas sensitive T-ALL cells showed a significant increase of apoptosis and a strong down-modulation of PI3K signaling, resistant T-ALL cells showed a hyperactivation of AKT and MEK/ERK1/2 signaling pathways, not caused by differences in the expression of nelarabine transporters or metabolic activators. We then studied the combination of nelarabine with the PI3K inhibitors (both pan and dual γ/δ inhibitors), with the Bcl2 specific inhibitor ABT199, and with the MEK inhibitor trametinib on both T-ALL cell lines and patient samples at relapse, which displayed constitutive activation of PI3K signaling and resistance to nelarabine alone. The combination with the pan PI3K inhibitor ZSTK-474 was the most effective in inhibiting the growth of T-ALL cells and was synergistic in decreasing cell survival and inducing apoptosis in nelarabine-resistant T-ALL cells. The drug combination caused AKT dephosphorylation and a downregulation of Bcl2, while nelarabine alone induced an increase in p-AKT and Bcl2 signaling in the resistant T-ALL cells and relapsed patient samples. Conclusions These findings indicate that nelarabine in combination with PI3K inhibitors may be a promising therapeutic strategy for the treatment of T-ALL relapsed patients. Electronic supplementary material The online version of this article (doi:10.1186/s13045-016-0344-4) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Annalisa Lonetti
- Department of Biomedical and Neuromotor Sciences, University of Bologna, Bologna, Italy
| | - Alessandra Cappellini
- Department of Human Social and Health Sciences, University of Cassino, Cassino, Italy
| | - Alice Bertaina
- Department of Pediatric Hematology-Oncology, IRCCS, Bambino Gesù Children's Hospital, Rome, Italy
| | - Franco Locatelli
- Department of Pediatric Hematology-Oncology, IRCCS, Bambino Gesù Children's Hospital, Rome, Italy
| | - Andrea Pession
- Department of Pediatrics, "Lalla Seràgnoli" Hematology-Oncology Unit, University of Bologna, Bologna, Italy
| | - Francesca Buontempo
- Department of Biomedical and Neuromotor Sciences, University of Bologna, Bologna, Italy
| | - Camilla Evangelisti
- Institute of Molecular Genetics, Rizzoli Orthopedic Institute, National Research Council, Bologna, Italy
| | - Cecilia Evangelisti
- Department of Biomedical and Neuromotor Sciences, University of Bologna, Bologna, Italy
| | - Ester Orsini
- Department of Biomedical and Neuromotor Sciences, University of Bologna, Bologna, Italy
| | - Laura Zambonin
- Department of Pharmacy and Biotechnology, University of Bologna, Bologna, Italy
| | - Luca Maria Neri
- Department of Morphology, Surgery and Experimental Medicine, University of Ferrara, Ferrara, Italy
| | - Alberto Maria Martelli
- Department of Biomedical and Neuromotor Sciences, University of Bologna, Bologna, Italy.
| | - Francesca Chiarini
- Institute of Molecular Genetics, Rizzoli Orthopedic Institute, National Research Council, Bologna, Italy.
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Ciccolini J, Serdjebi C, Le Thi Thu H, Lacarelle B, Milano G, Fanciullino R. Nucleoside analogs: ready to enter the era of precision medicine? Expert Opin Drug Metab Toxicol 2016; 12:865-77. [DOI: 10.1080/17425255.2016.1192128] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Joseph Ciccolini
- SMARTc Unit, Inserm S_911 CRO2 Aix-Marseille University, Marseille, France
| | - Cindy Serdjebi
- Assistance Publique Hôpitaux de Marseille. Multidisciplinary Oncology & Therapeutic Innovations dpt, Aix Marseille University, Marseille, France
| | - Hau Le Thi Thu
- SMARTc Unit, Inserm S_911 CRO2 Aix-Marseille University, Marseille, France
| | - Bruno Lacarelle
- SMARTc Unit, Inserm S_911 CRO2 Aix-Marseille University, Marseille, France
| | - Gerard Milano
- Oncopharmacology Unit, Centre Antoine Lacassagne, Nice, France
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EL-Mahdy AFM, EL-Sherief HAH. An efficient and rapid intramolecular cyclization of a quadruple Mannich reaction for one-pot synthesis of pentaazaphenalenes and their antimicrobial activities. RSC Adv 2016; 6:92134-92143. [DOI: 10.1039/c6ra20689a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/01/2023] Open
Abstract
An efficient, regioselective and one-pot synthesis of pentaazaphenalenes has been developed via a quadruple Mannich reaction. Most of the synthesized compounds showed significant antimicrobial activities.
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Balakrishnan K, Ravandi F, Bantia S, Franklin A, Gandhi V. Preclinical and clinical evaluation of forodesine in pediatric and adult B-cell acute lymphoblastic leukemia. CLINICAL LYMPHOMA MYELOMA & LEUKEMIA 2013; 13:458-66. [PMID: 23773454 DOI: 10.1016/j.clml.2013.04.009] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2012] [Revised: 04/25/2013] [Accepted: 04/26/2013] [Indexed: 01/17/2023]
Abstract
BACKGROUND The discovery that purine nucleoside phosphorylase (PNP) deficiency leads to T-cell lymphopenia was the basis for introducing PNP inhibitors for T-cell leukemias. Forodesine is an orally bioavailable PNP inhibitor with picomolar potency. Because T lymphoblasts and indolent chronic lymphocytic leukemia (CLL) B cells inherently elicit favorable pharmacokinetics to accumulate deoxyguanosine triphosphate (dGTP), forodesine demonstrated promising activity in preclinical and clinical settings for patients with T-cell acute lymphoblastic leukemia (T-ALL) and B-cell CLL (B-CLL). However, the use of forodesine in B-cell ALL (B-ALL) is unknown. PATIENTS AND METHODS Leukemic blasts obtained from pediatric patients with de novo B-ALL (n = 10) were incubated with forodesine and deoxyguanosine (dGuo), and the biological end points of apoptosis, intracellular dGTP accumulation, and inhibition of RNA and DNA synthesis were measured. Additionally, adult patients with B-ALL (n = 2) were intravenously infused with 80 mg/m(2)/d daily for 5 days. After therapy, clinical response, toxicity, laboratory biomarkers including PNP enzyme inhibition, and plasma forodesine, dGuo, and intracellular dGTP levels were analyzed. RESULTS Our in vitro investigations demonstrated that forodesine treatment inhibited proliferation and induced modest apoptosis in de novo B-ALL lymphoblasts. There was time-dependent accumulation of dGTP and inhibition of RNA and DNA synthesis. During therapy, neither patient achieved a complete response (CR), but there was disease stabilization for several weeks in both patients. There was significant maintained inhibition of PNP enzyme in red blood cells, accumulation of forodesine and dGuo in plasma, and intracellular dGTP accumulation in both patients. CONCLUSION Our preclinical and clinical investigations suggest that forodesine has activity in B-ALL. However, it needs to be either infused with dGuo or combined with established chemotherapeutic agents based on mechanistic rationale.
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Affiliation(s)
- Kumudha Balakrishnan
- Department of Experimental Therapeutics, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
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26
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Robak P, Robak T. Older and new purine nucleoside analogs for patients with acute leukemias. Cancer Treat Rev 2013; 39:851-61. [PMID: 23566572 DOI: 10.1016/j.ctrv.2013.03.006] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2012] [Revised: 03/05/2013] [Accepted: 03/14/2013] [Indexed: 02/05/2023]
Abstract
Purine nucleoside analogs (PNAs) compose a class of cytotoxic drugs that have played an important role in the treatment of hematological neoplasms, especially lymphoid and myeloid malignancies. All PNA drugs have a chemical structure similar to adenosine or guanosine, and they have similar mechanisms of action. They have many intracellular targets: they act as antimetabolites, competing with natural nucleosides during DNA or RNA synthesis, and as inhibitors of key cell enzymes. In contrast to other antineoplastic drugs, PNAs act cytotoxically, both in the mitotic and quiescent cell cycle phases. In the last few years, three PNAs have been approved for the treatment of lymphoid malignancies and other hematological disorders: 2-chlorodeoxyadenosine (2-CdA), fludarabine and pentostatin. 2-CdA and fludarabine are also active in the treatment of acute myeloid leukemia (AML). These drugs, in combination with cytarabine and other agents, are commonly used as salvage regimens in relapsed or refractory AML. Moreover, the addition of 2-CdA to the standard induction regimen is associated with an increased rate of complete remission and improved survival of adult patients with AML. More recently three novel PNAs have been synthesized and introduced into clinical trials: clofarabine, nelarabine and forodesine. Clofarabine is the most promising PNA in current clinical trials in pediatric and adult patients with acute leukemias. Nelarabine is more cytotoxic in T-lineage than in B-lineage leukemias. Clofarabine and nelarabine have been approved for the treatment of refractory patients with acute lymphoblastic leukemia (ALL) and lymphoblastic lymphoma. Clofarabine is also an active drug in AML treatment when administered either alone or in combination regimens as front-line treatment and in relapsed or refractory patients. Unlike other PNA, forodesine is not incorporated into DNA but displays a highly selective purine nucleoside phosphorylase inhibitory action. Forodesine is undergoing clinical trials for the treatment of T-cell malignancies, including T-cell ALL. This article summarizes recent achievements in the mechanism of action, pharmacological properties and clinical activity and toxicity of PNAs, as well as their emerging role in lymphoid and myeloid acute leukemias.
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Affiliation(s)
- Pawel Robak
- Department of Experimental Hematology, Medical University of Lodz, Copernicus Memorial Hospital, 93-510 Lodz, ul. Ciołkowskiego 2, Poland ul. Ciołkowskiego 2, Poland
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Abstract
Enzymes achieve their transition states by dynamic conformational searches on the femtosecond to picosecond time scale. Mimics of reactants at enzymatic transition states bind tightly to enzymes by stabilizing the conformation optimized through evolution for transition state formation. Instead of forming the transient transition state geometry, transition state analogues convert the short-lived transition state to a stable thermodynamic state. Enzymatic transition states are understood by combining kinetic isotope effects and computational chemistry. Analogues of the transition state can bind millions of times more tightly than substrates and show promise for drug development for several targets.
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Affiliation(s)
- Vern L Schramm
- Department of Biochemistry, Albert Einstein College of Medicine, 1300 Morris Park Avenue, Bronx New York 10461, United States.
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Stratton CF, Schramm VL. Immucillin-H, a purine nucleoside phosphorylase transition state analog, causes non-lethal attenuation of growth in Staphylococcus aureus. Bioinformation 2013; 9:9-17. [PMID: 23390338 PMCID: PMC3563410 DOI: 10.6026/97320630009009] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2012] [Accepted: 12/04/2012] [Indexed: 12/02/2022] Open
Abstract
Purine nucleoside phosphorylase (PNP; EC: 2.4.2.1) is a key enzyme involved in
the purine salvage pathway. A recent bioinformatic study by Yadav, P. K.
et al. (Bioinformation 2012, 8(14),
664–672) reports PNP as an essential enzyme and potential drug target in
community-acquired methicillin-resistant Staphylococcus aureus
(CA-MRSA). We conducted an analysis using the methodology outlined by the
authors, but were unable to identify PNP as an essential gene product in
CA-MRSA. In addition, the treatment of Staphylococcus aureus
cultures with immucillin-H, a powerful inhibitor of PNP, resulted in the
non-lethal attenuation of growth, suggesting that PNP activity is not essential
for cell viability.
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29
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Somech R, Lev A, Simon AJ, Hanna S, Etzioni A. T- and B-cell defects in a novel purine nucleoside phosphorylase mutation. J Allergy Clin Immunol 2012; 130:539-42. [DOI: 10.1016/j.jaci.2012.03.038] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2011] [Revised: 02/19/2012] [Accepted: 03/22/2012] [Indexed: 10/28/2022]
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30
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Ruggeri A, Michel G, Dalle JH, Caniglia M, Locatelli F, Campos A, de Heredia CD, Mohty M, Hurtado JMP, Bierings M, Bittencourt H, Mauad M, Purtill D, Cunha R, Kabbara N, Gluckman E, Labopin M, Peters C, Rocha V. Impact of pretransplant minimal residual disease after cord blood transplantation for childhood acute lymphoblastic leukemia in remission: an Eurocord, PDWP–EBMT analysis. Leukemia 2012; 26:2455-61. [DOI: 10.1038/leu.2012.123] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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Koczor CA, Torres RA, Lewis W. The role of transporters in the toxicity of nucleoside and nucleotide analogs. Expert Opin Drug Metab Toxicol 2012; 8:665-76. [PMID: 22509856 DOI: 10.1517/17425255.2012.680885] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
INTRODUCTION Two families of nucleoside analogs have been developed to treat viral infections and cancer, but these compounds can cause tissue- and cell-specific toxicity related to their uptake and subcellular activity, which are dictated by host enzymes and transporters. Cellular uptake of these compounds requires nucleoside transporters that share functional similarities but differ in substrate specificity. Tissue-specific cellular expression of these transporters enables nucleoside analogs to produce their tissue-specific toxic effects, a limiting factor in the treatment of retroviruses and cancer. AREAS COVERED This review discusses the families of nucleoside transporters and how they mediate cellular uptake of nucleoside analogs. Specific focus is placed on examples of known cases of transporter-mediated cellular toxicity and classification of the toxicities resulting. Efflux transporters are also explored as a contributor to analog toxicity and cell-specific effects. EXPERT OPINION Efforts to modulate transporter uptake/clearance remain long-term goals of oncologists and virologists. Accordingly, subcellular approaches that either increase or decrease intracellular nucleoside analog concentrations are eagerly sought and include transporter inhibitors and targeting transporter expression. However, additional understanding of nucleoside transporter kinetics, tissue expression and genetic polymorphisms is required to design better molecules and better therapies.
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32
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Fielding AK, Banerjee L, Marks DI. Recent Developments in the Management of T-Cell Precursor Acute Lymphoblastic Leukemia/Lymphoma. Curr Hematol Malig Rep 2012; 7:160-9. [DOI: 10.1007/s11899-012-0123-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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33
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Lee L, Fielding AK. Emerging pharmacotherapies for adult patients with acute lymphoblastic leukemia. CLINICAL MEDICINE INSIGHTS-ONCOLOGY 2012; 6:85-100. [PMID: 22346368 PMCID: PMC3273927 DOI: 10.4137/cmo.s7262] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Acute lymphoblastic leukemia (ALL) treatment regimes are amongst the longest, most intensive and complex used in hematooncology. Despite this, while treatment of pediatric ALL is a success story, we are far from being able to ensure a durable response in adult ALL. This is not due to failure of induction therapy as a complete remission (CR) is achieved in over 90% of patients. However the challenge remains in ensuring a sustained remission. Furthermore in the face of relapsed disease, salvage therapies currently offer a poor chance of a good outcome. This article reviews the novel agents which show the most promise in the treatment of adult ALL.
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Affiliation(s)
- Lydia Lee
- Department of Hematology, Hillingdon Hospital, Pield Heath Road, Uxbridge, Middlesex, UB8 3NN
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Abstract
Antimetabolites are cytotoxic agents, which have been developed for more than 50 years. Which cancer patient did not receive or will not receive 5-fluorouracil or methotrexate during the evolution his or her disease? Antimetabolites are defined as interfering with the synthesis of the DNA constituents; they are structural analogues, either of purine and pyrimidine bases (or the corresponding nucleosides), or of folate cofactors, which are involved at several steps of purine and pyrimidine biosynthesis. Their first mechanism of action is, therefore, to induce depletion in nucleotides inducing in turn an inhibition of DNA replication. However, some of them are able to get inserted fraudulently into nucleic acids, inducing structural abnormalities leading to cell death by other mechanisms, including DNA breaks. We present in this paper, for the three classes of antimetabolites, both ancient and recent molecules as well as molecules still in clinical trials, without exhaustivity.
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