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Martinez LM, Guzman ML. Understanding the interaction between leukaemia stem cells and their microenvironment to improve therapeutic approaches. Br J Pharmacol 2024; 181:273-282. [PMID: 37309573 DOI: 10.1111/bph.16162] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Revised: 03/21/2023] [Accepted: 06/02/2023] [Indexed: 06/14/2023] Open
Abstract
Although chemotherapeutic regimens can eliminate blasts in leukaemia patients, such therapies are associated with toxicity and often fail to eliminate all malignant cells resulting in disease relapse. Disease relapse has been attributed to the persistence of leukaemia cells in the bone marrow (BM) with the capacity to recapitulate disease; these cells are often referred to as leukaemia stem cells (LSCs). Although LSCs have distinct characteristics in terms of pathobiology and immunophenotype, they are still regulated by their interactions with the surrounding microenvironment. Thus, understanding the interaction between LSCs and their microenvironment is critical to identify effective therapies. To this end, there are numerous efforts to develop models to study such interactions. In this review, we will focus on the reciprocal interactions between LSCs and their milieu in the BM. Furthermore, we will highlight relevant therapies targeting these interactions and discuss some of the promising in vitro models designed to mimic such relationship. LINKED ARTICLES: This article is part of a themed issue on Cancer Microenvironment and Pharmacological Interventions. To view the other articles in this section visit http://onlinelibrary.wiley.com/doi/10.1111/bph.v181.2/issuetoc.
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Affiliation(s)
- Leandro M Martinez
- Division of Hematology and Medical Oncology, Weill Cornell Medical College, New York, New York, USA
| | - Monica L Guzman
- Division of Hematology and Medical Oncology, Weill Cornell Medical College, New York, New York, USA
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2
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Jiang C, Li J, Guo D, Luo Z. Bone Marrow Mesenchymal Stem Cell-Derived miR-29b Promotes the Progression of Acute Myeloid Leukemia. J BIOMATER TISS ENG 2023. [DOI: 10.1166/jbt.2023.3213] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
This study investigates the effect of low miR-29b expression derived from bone marrow mesenchymal stem cells (BMSC) on AML. miR-29b expression in acute leukemia drug resistant cell line as K562/ADM was detected with RT-PCR. Cell proliferation was tested with MTT assay and apoptosis
was analyzed by flow cytometry. The correlation between miR-29b and PDGFRα level was analyzed. miR-29b expression was reduced after si-miR-29b transfection. PDGFRα expression was increased by the low miR-29b expression in AML cells so as to prompt the progression
of AML. Cell proliferation in K562/ADM was increased after miR-29b expression was reduced and quantity of apoptosis was decreased. There was a correlation of miR-29b and PDGFRα in the staging of AML (P <0.05). In conclusion, AML could be aggravated by the low miR-29b
expression possibly through regulating PDGFRα, resulting in increased drug tolerance.
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Affiliation(s)
- Chunyan Jiang
- Department of Pediatrics, Daqing Oilfield General Hospital, Daqing, Heilongjiang, 163001, China
| | - Jinlan Li
- Department of Pediatrics, Daqing Oilfield General Hospital, Daqing, Heilongjiang, 163001, China
| | - Dandan Guo
- Department of Pediatrics, Daqing Oilfield General Hospital, Daqing, Heilongjiang, 163001, China
| | - Zhihong Luo
- Department of Pediatrics, Daqing Oilfield General Hospital, Daqing, Heilongjiang, 163001, China
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3
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Doxorubicin-Loaded Polymeric Micelles Conjugated with CKR- and EVQ-FLT3 Peptides for Cytotoxicity in Leukemic Stem Cells. Pharmaceutics 2022; 14:pharmaceutics14102115. [PMID: 36297550 PMCID: PMC9610626 DOI: 10.3390/pharmaceutics14102115] [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: 08/13/2022] [Revised: 09/13/2022] [Accepted: 09/29/2022] [Indexed: 11/25/2022] Open
Abstract
Doxorubicin (Dox) is the standard chemotherapeutic agent for acute myeloblastic leukemia (AML) treatment. However, 40% of Dox-treated AML cases relapsed due to the presence of leukemic stem cells (LSCs). Thus, poloxamer 407 and CKR- and EVQ-FLT3 peptides were used to formulate Dox-micelles (DMs) and DM conjugated with peptides (CKR and EVQ) for improving AML-LSC treatment. Results indicated that DMs with a weight ratio of Dox to P407 of 1:200 had a particle size of 23.3 ± 1.3 nm with a high percentage of Dox entrapment. They were able to prolong drug release and maintain physicochemical stability. Following effective DM preparation, P407 was modified and conjugated with FLT3 peptides, CKR and EVQ to formulate DM-CKR, DM-EVQ, and DM-CKR+DM-EVQ. Freshly synthesized DMs displaying FLT3 peptides showed particle sizes smaller than 50 nm and a high drug entrapment level, comparable with DMs. DM-CKR+DM-EVQ was considerably more toxic to KG-1a (AML LSC-like cell model) than Dox-HCl. These FLT3-targeted DMs could increase drug uptake and induce apoptosis induction. Due to an increase in micelle-LSC binding and uptake, DMs displaying both peptides tended to improve the potency of Dox compared to a single peptide-coupled micelle.
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Lewis AH, Bridges CS, Moorshead DN, Chen TJ, Du W, Zorman B, Sumazin P, Puppi M, Lacorazza HD. Krüppel-like Factor 4 Supports the Expansion of Leukemia Stem Cells in MLL-AF9-driven Acute Myeloid Leukemia. Stem Cells 2022; 40:736-750. [PMID: 35535819 PMCID: PMC9406610 DOI: 10.1093/stmcls/sxac033] [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: 11/20/2021] [Accepted: 04/27/2022] [Indexed: 11/13/2022]
Abstract
Acute myeloid leukemia (AML) is an aggressive malignancy of the bone marrow with 5-year overall survival of less than 10% in patients over the age of 65. Limited progress has been made in the patient outcome because of the inability to selectively eradicate the leukemic stem cells (LSC) driving the refractory and relapsed disease. Herein, we investigated the role of the reprogramming factor KLF4 in AML because of its critical role in the self-renewal and stemness of embryonic and cancer stem cells. Using a conditional Cre-lox Klf4 deletion system and the MLL-AF9 retroviral mouse model, we demonstrated that loss-of-KLF4 does not significantly affect the induction of leukemia but markedly decreased the frequency of LSCs evaluated in limiting-dose transplantation studies. Loss of KLF4 in leukemic granulocyte-macrophage progenitors (L-GMP), a population enriched for AML LSCs, showed lessened clonogenicity and percentage in the G2/M phase of the cell cycle. RNAseq analysis of purified L-GMPs revealed decreased expression of stemness genes and MLL-target genes and upregulation of the RNA sensing helicase DDX58. However, silencing of DDX58 in KLF4 knockout leukemia indicated that DDX58 is not mediating this phenotype. CRISPR/Cas9 deletion of KLF4 in MOLM13 cell line and AML patient-derived xenograft cells showed impaired expansion in vitro and in vivo associated with a defective G2/M checkpoint. Collectively, our data suggest a mechanism in which KLF4 promotes leukemia progression by establishing a gene expression profile in AML LSCs supporting cell division and stemness.
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Affiliation(s)
- Andrew Henry Lewis
- Department of Pathology & Immunology, Baylor College of Medicine, Texas Children’s Hospital, Houston, TX, USA
| | - Cory Seth Bridges
- Department of Pathology & Immunology, Baylor College of Medicine, Texas Children’s Hospital, Houston, TX, USA
| | - David Neal Moorshead
- Graduate School of Biomedical Sciences, Baylor College of Medicine, Houston, TX, USA
| | - Taylor J Chen
- Department of Pathology & Immunology, Baylor College of Medicine, Texas Children’s Hospital, Houston, TX, USA
| | - Wa Du
- Department of Pathology & Immunology, Baylor College of Medicine, Texas Children’s Hospital, Houston, TX, USA
| | - Barry Zorman
- Department of Pediatrics, Baylor College of Medicine, Houston, TX, USA
| | - Pavel Sumazin
- Present address: Department of Cancer Biology, University of Cincinnati, Cincinnati, OH, USA
| | - Monica Puppi
- Department of Pathology & Immunology, Baylor College of Medicine, Texas Children’s Hospital, Houston, TX, USA
| | - H Daniel Lacorazza
- Department of Pathology & Immunology, Baylor College of Medicine, Texas Children’s Hospital, Houston, TX, USA
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5
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Barreto IV, Pessoa FMCDP, Machado CB, Pantoja LDC, Ribeiro RM, Lopes GS, Amaral de Moraes ME, de Moraes Filho MO, de Souza LEB, Burbano RMR, Khayat AS, Moreira-Nunes CA. Leukemic Stem Cell: A Mini-Review on Clinical Perspectives. Front Oncol 2022; 12:931050. [PMID: 35814466 PMCID: PMC9270022 DOI: 10.3389/fonc.2022.931050] [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: 04/28/2022] [Accepted: 05/25/2022] [Indexed: 11/13/2022] Open
Abstract
Hematopoietic stem cells (HSCs) are known for their ability to proliferate and self-renew, thus being responsible for sustaining the hematopoietic system and residing in the bone marrow (BM). Leukemic stem cells (LSCs) are recognized by their stemness features such as drug resistance, self-renewal, and undifferentiated state. LSCs are also present in BM, being found in only 0.1%, approximately. This makes their identification and even their differentiation difficult since, despite the mutations, they are cells that still have many similarities with HSCs. Although the common characteristics, LSCs are heterogeneous cells and have different phenotypic characteristics, genetic mutations, and metabolic alterations. This whole set of alterations enables the cell to initiate the process of carcinogenesis, in addition to conferring drug resistance and providing relapses. The study of LSCs has been evolving and its application can help patients, where through its count as a biomarker, it can indicate a prognostic factor and reveal treatment results. The selection of a target to LSC therapy is fundamental. Ideally, the target chosen should be highly expressed by LSCs, highly selective, absence of expression on other cells, in particular HSC, and preferentially expressed by high numbers of patients. In view of the large number of similarities between LSCs and HSCs, it is not surprising that current treatment approaches are limited. In this mini review we seek to describe the immunophenotypic characteristics and mechanisms of resistance presented by LSCs, also approaching possible alternatives for the treatment of patients.
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Affiliation(s)
- Igor Valentim Barreto
- Department of Medicine, Pharmacogenetics Laboratory, Drug Research and Development Center (NPDM), Federal University of Ceará, Fortaleza, Brazil
| | - Flávia Melo Cunha de Pinho Pessoa
- Department of Medicine, Pharmacogenetics Laboratory, Drug Research and Development Center (NPDM), Federal University of Ceará, Fortaleza, Brazil
| | - Caio Bezerra Machado
- Department of Medicine, Pharmacogenetics Laboratory, Drug Research and Development Center (NPDM), Federal University of Ceará, Fortaleza, Brazil
| | - Laudreísa da Costa Pantoja
- Department of Pediatrics, Octávio Lobo Children’s Hospital, Belém, Brazil
- Department of Biological Sciences, Oncology Research Center, Federal University of Pará, Belém, Brazil
| | | | | | - Maria Elisabete Amaral de Moraes
- Department of Medicine, Pharmacogenetics Laboratory, Drug Research and Development Center (NPDM), Federal University of Ceará, Fortaleza, Brazil
| | - Manoel Odorico de Moraes Filho
- Department of Medicine, Pharmacogenetics Laboratory, Drug Research and Development Center (NPDM), Federal University of Ceará, Fortaleza, Brazil
| | | | | | - André Salim Khayat
- Department of Biological Sciences, Oncology Research Center, Federal University of Pará, Belém, Brazil
| | - Caroline Aquino Moreira-Nunes
- Department of Medicine, Pharmacogenetics Laboratory, Drug Research and Development Center (NPDM), Federal University of Ceará, Fortaleza, Brazil
- Department of Biological Sciences, Oncology Research Center, Federal University of Pará, Belém, Brazil
- Ceará State University, Northeast Biotechnology Network (RENORBIO), Fortaleza, Brazil
- *Correspondence: Caroline Aquino Moreira-Nunes,
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Sidorova OA, Sayed S, Paszkowski-Rogacz M, Seifert M, Camgöz A, Roeder I, Bornhäuser M, Thiede C, Buchholz F. RNAi-Mediated Screen of Primary AML Cells Nominates MDM4 as a Therapeutic Target in NK-AML with DNMT3A Mutations. Cells 2022; 11:cells11050854. [PMID: 35269477 PMCID: PMC8909053 DOI: 10.3390/cells11050854] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Revised: 02/15/2022] [Accepted: 02/23/2022] [Indexed: 12/22/2022] Open
Abstract
DNA-methyltransferase 3A (DNMT3A) mutations belong to the most frequent genetic aberrations found in adult acute myeloid leukemia (AML). Recent evidence suggests that these mutations arise early in leukemogenesis, marking leukemic progenitors and stem cells, and persist through consolidation chemotherapy, providing a pool for AML relapse. Currently, there are no therapeutic approaches directed specifically against this cell population. To unravel therapeutically actionable targets in mutant DNMT3A-driven AML cells, we have performed a focused RNAi screen in a panel of 30 primary AML samples, all carrying a DNMT3A R882 mutation. As one of the strongest hits, we identified MDM4 as a gene essential for proliferation of primary DNMT3AWT/R882X AML cells. We analyzed a publicly available RNA-Seq dataset of primary normal karyotype (NK) AML samples and found a trend towards MDM4 transcript overexpression particularly in DNMT3A-mutant samples. Moreover, we found that the MDM2/4 inhibitor ALRN-6924 impairs growth of DNMT3AWT/R882X primary cells in vitro by inducing cell cycle arrest through upregulation of p53 target genes. Our results suggest that MDM4 inhibition is a potential target in NK-AML patients bearing DNMT3A R882X mutations.
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Affiliation(s)
- Olga Alexandra Sidorova
- Medical Systems Biology, Faculty of Medicine, Technische Universität Dresden, 01307 Dresden, Germany; (O.A.S.); (S.S.); (M.P.-R.)
| | - Shady Sayed
- Medical Systems Biology, Faculty of Medicine, Technische Universität Dresden, 01307 Dresden, Germany; (O.A.S.); (S.S.); (M.P.-R.)
| | - Maciej Paszkowski-Rogacz
- Medical Systems Biology, Faculty of Medicine, Technische Universität Dresden, 01307 Dresden, Germany; (O.A.S.); (S.S.); (M.P.-R.)
| | - Michael Seifert
- Institute for Medical Informatics and Biometry (IMB), Technische Universität Dresden, 01307 Dresden, Germany; (M.S.); (I.R.)
| | - Aylin Camgöz
- Hopp Children’s Cancer Center Heidelberg, 69120 Heidelberg, Germany;
- German Cancer Research Center (DKFZ), 69120 Heidelberg, Germany; (M.B.); (C.T.)
| | - Ingo Roeder
- Institute for Medical Informatics and Biometry (IMB), Technische Universität Dresden, 01307 Dresden, Germany; (M.S.); (I.R.)
| | - Martin Bornhäuser
- German Cancer Research Center (DKFZ), 69120 Heidelberg, Germany; (M.B.); (C.T.)
- National Center for Tumor Diseases (NCT/UCC), 01307 Dresden, Germany
- Faculty of Medicine, University Hospital Carl Gustav Carus, Technische Universität Dresden, 01307 Dresden, Germany
- Helmholtz-Zentrum Dresden—Rossendorf (HZDR), 01328 Dresden, Germany
- Medical Clinic and Polyclinic I, University Hospital Carl Gustav Carus, Technische Universität Dresden, 01307 Dresden, Germany
- German Cancer Consortium (DKTK), Partner Site Dresden, 01307 Dresden, Germany
| | - Christian Thiede
- German Cancer Research Center (DKFZ), 69120 Heidelberg, Germany; (M.B.); (C.T.)
- National Center for Tumor Diseases (NCT/UCC), 01307 Dresden, Germany
- Faculty of Medicine, University Hospital Carl Gustav Carus, Technische Universität Dresden, 01307 Dresden, Germany
- Helmholtz-Zentrum Dresden—Rossendorf (HZDR), 01328 Dresden, Germany
- Medical Clinic and Polyclinic I, University Hospital Carl Gustav Carus, Technische Universität Dresden, 01307 Dresden, Germany
- German Cancer Consortium (DKTK), Partner Site Dresden, 01307 Dresden, Germany
| | - Frank Buchholz
- Medical Systems Biology, Faculty of Medicine, Technische Universität Dresden, 01307 Dresden, Germany; (O.A.S.); (S.S.); (M.P.-R.)
- German Cancer Research Center (DKFZ), 69120 Heidelberg, Germany; (M.B.); (C.T.)
- National Center for Tumor Diseases (NCT/UCC), 01307 Dresden, Germany
- Faculty of Medicine, University Hospital Carl Gustav Carus, Technische Universität Dresden, 01307 Dresden, Germany
- Helmholtz-Zentrum Dresden—Rossendorf (HZDR), 01328 Dresden, Germany
- German Cancer Consortium (DKTK), Partner Site Dresden, 01307 Dresden, Germany
- Correspondence:
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Central Nervous System Involvement in Adults with Acute Leukemia: Diagnosis, Prevention, and Management. Curr Oncol Rep 2022; 24:427-436. [PMID: 35141858 DOI: 10.1007/s11912-022-01220-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/03/2021] [Indexed: 02/07/2023]
Abstract
PURPOSE OF REVIEW Recent treatment advances in both acute myeloid leukemia and acute lymphoblastic leukemia have drastically improved outcomes for these diseases, but central nervous system (CNS) relapses still occur. Treatment of CNS disease can be challenging due to the impermeability of the blood-brain barrier to many systemic therapies. RECENT FINDINGS The diagnosis of CNS leukemia relies on assessment of clinical symptoms, cerebrospinal fluid sampling for conventional cytology and/or flow cytometry, and neuroimaging. While treatment of CNS leukemia with systemic or intrathecal chemotherapy and/or radiation can be curative in some patients, these modalities can also lead to serious toxicities. In the modern era, prophylaxis with intrathecal chemotherapy is the most important strategy to prevent CNS relapses in high risk patients. Accurate risk stratification tools and the use of risk-adapted prophylactic therapy are imperative to improving the outcomes of patients with acute leukemias and preventing the development of CNS leukemia.
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Wang SSY. Relationship between leukaemic stem cells and hematopoietic stem cells and their clinical application. Leuk Lymphoma 2022; 63:1524-1533. [PMID: 35067128 DOI: 10.1080/10428194.2022.2027401] [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
The world is aging and with it an associated increase in malignancies. Haematological malignancies especially Acute Myeloid Leukemia (AML) are no exception to this trend. With scientific advances, development of new AML treatments has improved patient mortality. One future research interest would be Leukeamic Stem Cells (LSC). This review aims to briefly highlight main LSC characteristics and their relationship with hematopoietic stem cells. Key LSC characteristics include dysregulated apoptosis, capacity for self-renewal, genomic instability, dysregulated energetics, immune privilege and an altered tumor microenvironment. Similar characteristics are also found in HSCs though in a regulated form. Classifying these characteristics will aid in the development of clinical biomarkers for LSC which is a potential clinical application of LSC biology. LSC biomarkers might prove to be critical in future AML management through improving accuracy of AML diagnosis, providing targeted treatment to minimize side effects, refinement of prognosis and relapse risk for earlier intervention.
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Affiliation(s)
- Samuel S Y Wang
- Department of Haematology, Tan Tock Seng Hospital, Singapore, Singapore
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Chueahongthong F, Tima S, Chiampanichayakul S, Berkland C, Anuchapreeda S. Co-Treatments of Edible Curcumin from Turmeric Rhizomes and Chemotherapeutic Drugs on Cytotoxicity and FLT3 Protein Expression in Leukemic Stem Cells. Molecules 2021; 26:5785. [PMID: 34641328 PMCID: PMC8510311 DOI: 10.3390/molecules26195785] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2021] [Revised: 09/13/2021] [Accepted: 09/21/2021] [Indexed: 12/15/2022] Open
Abstract
This study aims to enhance efficacy and reduce toxicity of the combination treatment of a drug and curcumin (Cur) on leukemic stem cell and leukemic cell lines, including KG-1a and KG-1 (FLT3+ LSCs), EoL-1 (FLT3+ LCs), and U937 (FLT3- LCs). The cytotoxicity of co-treatments of doxorubicin (Dox) or idarubicin (Ida) at concentrations of the IC10-IC80 values and each concentration of Cur at the IC20, IC30, IC40, and IC50 values (conditions 1, 2, 3, and 4) was determined by MTT assays. Dox-Cur increased cytotoxicity in leukemic cells. Dox-Cur co-treatment showed additive and synergistic effects in several conditions. The effect of this co-treatment on FLT3 expression in KG-1a, KG-1, and EoL-1 cells was examined by Western blotting. Dox-Cur decreased FLT3 protein levels and total cell numbers in all the cell lines in a dose-dependent manner. In summary, this study exhibits a novel report of Dox-Cur co-treatment in both enhancing cytotoxicity of Dox and inhibiting cell proliferation via FLT3 protein expression in leukemia stem cells and leukemic cells. This is the option of leukemia treatment with reducing side effects of chemotherapeutic drugs to leukemia patients.
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Affiliation(s)
- Fah Chueahongthong
- Division of Clinical Microscopy, Department of Medical Technology, Faculty of Associated Medical Sciences, Chiang Mai University, Chiang Mai 50200, Thailand; (F.C.); (S.T.); (S.C.)
| | - Singkome Tima
- Division of Clinical Microscopy, Department of Medical Technology, Faculty of Associated Medical Sciences, Chiang Mai University, Chiang Mai 50200, Thailand; (F.C.); (S.T.); (S.C.)
- Cancer Research Unit of Associated Medical Sciences (AMS-CRU), Faculty of Associated Medical Sciences, Chiang Mai University, Chiang Mai 50200, Thailand
- Center for Research and Development of Natural Products for Health, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Sawitree Chiampanichayakul
- Division of Clinical Microscopy, Department of Medical Technology, Faculty of Associated Medical Sciences, Chiang Mai University, Chiang Mai 50200, Thailand; (F.C.); (S.T.); (S.C.)
- Cancer Research Unit of Associated Medical Sciences (AMS-CRU), Faculty of Associated Medical Sciences, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Cory Berkland
- Department of Pharmaceutical Chemistry, School of Pharmacy, University of Kansas, Lawrence, KS 66047, USA
| | - Songyot Anuchapreeda
- Division of Clinical Microscopy, Department of Medical Technology, Faculty of Associated Medical Sciences, Chiang Mai University, Chiang Mai 50200, Thailand; (F.C.); (S.T.); (S.C.)
- Cancer Research Unit of Associated Medical Sciences (AMS-CRU), Faculty of Associated Medical Sciences, Chiang Mai University, Chiang Mai 50200, Thailand
- Center for Research and Development of Natural Products for Health, Chiang Mai University, Chiang Mai 50200, Thailand
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Perriello VM, Gionfriddo I, Rossi R, Milano F, Mezzasoma F, Marra A, Spinelli O, Rambaldi A, Annibali O, Avvisati G, Di Raimondo F, Ascani S, Falini B, Martelli MP, Brunetti L. CD123 Is Consistently Expressed on NPM1-Mutated AML Cells. Cancers (Basel) 2021; 13:cancers13030496. [PMID: 33525388 PMCID: PMC7865228 DOI: 10.3390/cancers13030496] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2021] [Revised: 01/20/2021] [Accepted: 01/22/2021] [Indexed: 12/14/2022] Open
Abstract
Simple Summary One-third of adult acute myeloid leukemia (AML) harbors NPM1 mutations. A deep knowledge of the distribution of selected antigens on the surface of NPM1-mutated AML cells may help optimizing new therapies for this frequent AML subtype. CD123 is known to be expressed on leukemic cells but also on healthy hematopoietic and endothelial cells, although at lower levels. Differences in antigen densities between AML and healthy cells may enlighten therapeutic windows, where targeting CD123 could be effective without triggering “on-target off-tumor” toxicities. Here, we perform a thorough analysis of CD123 expression demonstrating high expression of this antigen on both NPM1-mutated bulk leukemic cells and CD34+CD38− cells. Abstract NPM1-mutated (NPM1mut) acute myeloid leukemia (AML) comprises about 30% of newly diagnosed AML in adults. Despite notable advances in the treatment of this frequent AML subtype, about 50% of NPM1mut AML patients treated with conventional treatment die due to disease progression. CD123 has been identified as potential target for immunotherapy in AML, and several anti-CD123 therapeutic approaches have been developed for AML resistant to conventional therapies. As this antigen has been previously reported to be expressed by NPM1mut cells, we performed a deep flow cytometry analysis of CD123 expression in a large cohort of NPM1mut and wild-type samples, examining the whole blastic population, as well as CD34+CD38− leukemic cells. We demonstrate that CD123 is highly expressed on NPM1mut cells, with particularly high expression levels showed by CD34+CD38− leukemic cells. Additionally, CD123 expression was further enhanced by FLT3 mutations, which frequently co-occur with NPM1 mutations. Our results identify NPM1-mutated and particularly NPM1/FLT3 double-mutated AML as disease subsets that may benefit from anti-CD123 targeted therapies.
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Affiliation(s)
- Vincenzo Maria Perriello
- Department of Medicine and Surgery, University of Perugia, 06131 Perugia, Italy; (V.M.P.); (I.G.); (R.R.); (F.M.); (F.M.); (A.M.); (S.A.); (B.F.)
| | - Ilaria Gionfriddo
- Department of Medicine and Surgery, University of Perugia, 06131 Perugia, Italy; (V.M.P.); (I.G.); (R.R.); (F.M.); (F.M.); (A.M.); (S.A.); (B.F.)
| | - Roberta Rossi
- Department of Medicine and Surgery, University of Perugia, 06131 Perugia, Italy; (V.M.P.); (I.G.); (R.R.); (F.M.); (F.M.); (A.M.); (S.A.); (B.F.)
| | - Francesca Milano
- Department of Medicine and Surgery, University of Perugia, 06131 Perugia, Italy; (V.M.P.); (I.G.); (R.R.); (F.M.); (F.M.); (A.M.); (S.A.); (B.F.)
| | - Federica Mezzasoma
- Department of Medicine and Surgery, University of Perugia, 06131 Perugia, Italy; (V.M.P.); (I.G.); (R.R.); (F.M.); (F.M.); (A.M.); (S.A.); (B.F.)
| | - Andrea Marra
- Department of Medicine and Surgery, University of Perugia, 06131 Perugia, Italy; (V.M.P.); (I.G.); (R.R.); (F.M.); (F.M.); (A.M.); (S.A.); (B.F.)
| | - Orietta Spinelli
- Azienda Socio-Sanitaria Territoriale Papa Giovanni XXIII, 24127 Bergamo, Italy; (O.S.); (A.R.)
| | - Alessandro Rambaldi
- Azienda Socio-Sanitaria Territoriale Papa Giovanni XXIII, 24127 Bergamo, Italy; (O.S.); (A.R.)
- Department of Oncology and Hematology, University of Milan, 20122 Milan, Italy
| | - Ombretta Annibali
- Hematology and Stem Cell Transplant Unit, Campus Biomedico University Hospital, 00128 Rome, Italy; (O.A.); (G.A.)
| | - Giuseppe Avvisati
- Hematology and Stem Cell Transplant Unit, Campus Biomedico University Hospital, 00128 Rome, Italy; (O.A.); (G.A.)
| | - Francesco Di Raimondo
- Hematology and Bone Marrow Transplant Unit, Catania University Hospital, 95125 Catania, Italy;
| | - Stefano Ascani
- Department of Medicine and Surgery, University of Perugia, 06131 Perugia, Italy; (V.M.P.); (I.G.); (R.R.); (F.M.); (F.M.); (A.M.); (S.A.); (B.F.)
- Hematology and Bone Marrow Transplant Unit, Santa Maria della Misericordia Hospital, 06131 Perugia, Italy
- Pathology, Santa Maria Hospital, 05100 Terni, Italy
| | - Brunangelo Falini
- Department of Medicine and Surgery, University of Perugia, 06131 Perugia, Italy; (V.M.P.); (I.G.); (R.R.); (F.M.); (F.M.); (A.M.); (S.A.); (B.F.)
- Hematology and Bone Marrow Transplant Unit, Santa Maria della Misericordia Hospital, 06131 Perugia, Italy
| | - Maria Paola Martelli
- Department of Medicine and Surgery, University of Perugia, 06131 Perugia, Italy; (V.M.P.); (I.G.); (R.R.); (F.M.); (F.M.); (A.M.); (S.A.); (B.F.)
- Hematology and Bone Marrow Transplant Unit, Santa Maria della Misericordia Hospital, 06131 Perugia, Italy
- Correspondence: (M.P.M.); (L.B.)
| | - Lorenzo Brunetti
- Department of Medicine and Surgery, University of Perugia, 06131 Perugia, Italy; (V.M.P.); (I.G.); (R.R.); (F.M.); (F.M.); (A.M.); (S.A.); (B.F.)
- Hematology and Bone Marrow Transplant Unit, Santa Maria della Misericordia Hospital, 06131 Perugia, Italy
- Correspondence: (M.P.M.); (L.B.)
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11
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Khaldoyanidi S, Nagorsen D, Stein A, Ossenkoppele G, Subklewe M. Immune Biology of Acute Myeloid Leukemia: Implications for Immunotherapy. J Clin Oncol 2021; 39:419-432. [PMID: 33434043 PMCID: PMC8078464 DOI: 10.1200/jco.20.00475] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Affiliation(s)
| | | | - Anthony Stein
- City of Hope Comprehensive Cancer Center, Duarte, CA
| | - Gerrit Ossenkoppele
- Amsterdam University Medical Center, Location VU University Medical Center, Amsterdam, the Netherlands
| | - Marion Subklewe
- Department of Medicine III, University Hospital, Ludwig-Maximilians-Universität München, Munich, Germany
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12
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Deak D, Gorcea-Andronic N, Sas V, Teodorescu P, Constantinescu C, Iluta S, Pasca S, Hotea I, Turcas C, Moisoiu V, Zimta AA, Galdean S, Steinheber J, Rus I, Rauch S, Richlitzki C, Munteanu R, Jurj A, Petrushev B, Selicean C, Marian M, Soritau O, Andries A, Roman A, Dima D, Tanase A, Sigurjonsson O, Tomuleasa C. A narrative review of central nervous system involvement in acute leukemias. ANNALS OF TRANSLATIONAL MEDICINE 2021; 9:68. [PMID: 33553361 PMCID: PMC7859772 DOI: 10.21037/atm-20-3140] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Acute leukemias (both myeloid and lymphoblastic) are a group of diseases for which each year more successful therapies are implemented. However, in a subset of cases the overall survival (OS) is still exceptionally low due to the infiltration of leukemic cells in the central nervous system (CNS) and the subsequent formation of brain tumors. The CNS involvement is more common in acute lymphocytic leukemia (ALL), than in adult acute myeloid leukemia (AML), although the rates for the second case might be underestimated. The main reasons for CNS invasion are related to the expression of specific adhesion molecules (VLA-4, ICAM-1, VCAM, L-selectin, PECAM-1, CD18, LFA-1, CD58, CD44, CXCL12) by a subpopulation of leukemic cells, called “sticky cells” which have the ability to interact and adhere to endothelial cells. Moreover, the microenvironment becomes hypoxic and together with secretion of VEGF-A by ALL or AML cells the permeability of vasculature in the bone marrow increases, coupled with the disruption of blood brain barrier. There is a single subpopulation of leukemia cells, called leukemia stem cells (LSCs) that is able to resist in the new microenvironment due to its high adaptability. The LCSs enter into the arachnoid, migrate, and intensively proliferate in cerebrospinal fluid (CSF) and consequently infiltrate perivascular spaces and brain parenchyma. Moreover, the CNS is an immune privileged site that also protects leukemic cells from chemotherapy. CD56/NCAM is the most important surface molecule often overexpressed by leukemic stem cells that offers them the ability to infiltrate in the CNS. Although asymptomatic or with unspecific symptoms, CNS leukemia should be assessed in both AML/ALL patients, through a combination of flow cytometry and cytological analysis of CSF. Intrathecal therapy (ITT) is a preventive measure for CNS involvement in AML and ALL, still much research is needed in finding the appropriate target that would dramatically lower CNS involvement in acute leukemia.
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Affiliation(s)
- Dalma Deak
- Department of Hematology, Ion Chiricuta Clinical Cancer Center, Cluj-Napoca, Romania.,Department of Hematology, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Nicolae Gorcea-Andronic
- Department of Hematology, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Valentina Sas
- Department of Hematology, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania.,Department of Pediatrics, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Patric Teodorescu
- Department of Hematology, Ion Chiricuta Clinical Cancer Center, Cluj-Napoca, Romania.,Department of Hematology, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Catalin Constantinescu
- Department of Hematology, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania.,Intensive Care Unit, Ion Chiricuta Clinical Cancer Center, Cluj-Napoca, Romania
| | - Sabina Iluta
- Department of Hematology, Ion Chiricuta Clinical Cancer Center, Cluj-Napoca, Romania.,Department of Hematology, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Sergiu Pasca
- Department of Hematology, Ion Chiricuta Clinical Cancer Center, Cluj-Napoca, Romania.,Department of Hematology, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Ionut Hotea
- Department of Hematology, Ion Chiricuta Clinical Cancer Center, Cluj-Napoca, Romania.,Department of Hematology, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Cristina Turcas
- Department of Hematology, Ion Chiricuta Clinical Cancer Center, Cluj-Napoca, Romania.,Department of Hematology, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Vlad Moisoiu
- Department of Neurosurgery, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Alina-Andreea Zimta
- Medfuture Research Center for Advanced Medicine, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Simona Galdean
- Department of Hematology, Ion Chiricuta Clinical Cancer Center, Cluj-Napoca, Romania
| | - Jakob Steinheber
- Department of Hematology, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Ioana Rus
- Department of Hematology, Ion Chiricuta Clinical Cancer Center, Cluj-Napoca, Romania
| | - Sebastian Rauch
- Department of Hematology, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Cedric Richlitzki
- Department of Hematology, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Raluca Munteanu
- Medfuture Research Center for Advanced Medicine, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Ancuta Jurj
- Research Center for Functional Genomics and Translational Medicine, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Bobe Petrushev
- Medfuture Research Center for Advanced Medicine, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Cristina Selicean
- Department of Hematology, Ion Chiricuta Clinical Cancer Center, Cluj-Napoca, Romania
| | - Mirela Marian
- Department of Hematology, Ion Chiricuta Clinical Cancer Center, Cluj-Napoca, Romania
| | - Olga Soritau
- Department of Hematology, Ion Chiricuta Clinical Cancer Center, Cluj-Napoca, Romania
| | - Alexandra Andries
- Department of Radiology, Ion Chiricuta Clinical Cancer Center, Cluj-Napoca, Romania
| | - Andrei Roman
- Department of Radiology, Ion Chiricuta Clinical Cancer Center, Cluj-Napoca, Romania.,Department of Radiology, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Delia Dima
- Department of Hematology, Ion Chiricuta Clinical Cancer Center, Cluj-Napoca, Romania
| | - Alina Tanase
- Department of Stem Cell Transplantation, Fundeni Clinical Institute, Bucharest, Romania
| | | | - Ciprian Tomuleasa
- Department of Hematology, Ion Chiricuta Clinical Cancer Center, Cluj-Napoca, Romania.,Department of Hematology, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania.,Medfuture Research Center for Advanced Medicine, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
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13
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Goel H, Rahul E, Gupta AK, Meena JP, Chopra A, Ranjan A, Hussain S, Rath GK, Tanwar P. Molecular update on biology of Wilms Tumor 1 gene and its applications in acute myeloid leukemia. AMERICAN JOURNAL OF BLOOD RESEARCH 2020; 10:151-160. [PMID: 33224559 PMCID: PMC7675129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 06/27/2020] [Accepted: 09/16/2020] [Indexed: 06/11/2023]
Abstract
Wilms tumor gene 1 (WT1) is an important gene which is involved in growth and development of many organs. It is identified as a tumor suppressor gene in nephroblastoma. However, its role as a tumor oncogene has been highlighted by many studies in haematological as well as non haematological malignant neoplasm. The expression of WT1 on leukemic blast cells sensitised us to explore its impact on neoplastic phenomenon. WT1 is has been found both mutated as well as over expressed in different subsets of acute myeloid leukemia (AML). WT1 is a gene has been used as a biomarker for diagnosis, monitoring of minimal residual disease (MRD) and detection of relapse for molecular remission in AML. It also has potential of being a predictive molecular predictive biomarker for the treatment of leukemic cases after allogeneic transplantation. The WT1 specific expression on blast cells and its interaction with cytotoxic T cell has also been explored for its potential usage WT1 based immunotherapy. Here, we are reviewing molecular updates of WT1 gene and discuss its potential clinical applications as a predictive molecular biomarker for diagnosis, as MRD detection and as immunotherapy in AML.
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Affiliation(s)
- Harsh Goel
- Laboratory Oncology Unit, Dr. B.R.A. Institute Rotary Cancer Hospital, All India Institute of Medical SciencesNew Delhi 110029, India
| | - Ekta Rahul
- Laboratory Oncology Unit, Dr. B.R.A. Institute Rotary Cancer Hospital, All India Institute of Medical SciencesNew Delhi 110029, India
| | - Aditya Kumar Gupta
- Department of Pediatrics, All India Institute of Medical SciencesNew Delhi 110029, India
| | - Jagdish Prasad Meena
- Department of Pediatrics, All India Institute of Medical SciencesNew Delhi 110029, India
| | - Anita Chopra
- Laboratory Oncology Unit, Dr. B.R.A. Institute Rotary Cancer Hospital, All India Institute of Medical SciencesNew Delhi 110029, India
| | - Amar Ranjan
- Laboratory Oncology Unit, Dr. B.R.A. Institute Rotary Cancer Hospital, All India Institute of Medical SciencesNew Delhi 110029, India
| | - Showket Hussain
- Division of Molecular Oncology, National Institute of Cancer Prevention & Research I-7Sector-39, NOIDA-201301, India
| | - GK Rath
- All India Institute of Medical ScincesNew Delhi, India
| | - Pranay Tanwar
- Laboratory Oncology Unit, Dr. B.R.A. Institute Rotary Cancer Hospital, All India Institute of Medical SciencesNew Delhi 110029, India
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14
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Cranberry A-type proanthocyanidins selectively target acute myeloid leukemia cells. Blood Adv 2020; 3:3261-3265. [PMID: 31698457 DOI: 10.1182/bloodadvances.2018026633] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2018] [Accepted: 09/23/2019] [Indexed: 12/16/2022] Open
Abstract
Most elderly patients affected with acute myeloid leukemia (AML) will relapse and die of their disease even after achieving complete remission, thus emphasizing the urgent need for new therapeutic approaches with minimum toxicity to normal hematopoietic cells. Cranberry (Vaccinium spp.) extracts have exhibited anticancer and chemopreventive properties that have been mostly attributed to A-type proanthocyanidin (A-PAC) compounds. A-PACs, isolated from a commercially available cranberry extract, were evaluated for their effects on leukemia cell lines, primary AML samples, and normal CD34+ cord blood specimens. Our results indicated potent and specific antileukemia activity in vitro. In addition, the antileukemia activity of A-PACs extended to malignant progenitor and stem cell populations, sparing their normal counterparts. The antileukemia effects of A-PACs were also observed in vivo using patient derived xenografts. Surprisingly, we found that the mechanism of cell death was driven by activation of NF-κB. Overall, our data suggest that A-PACs could be used to improve treatments for AML by targeting leukemia stem cells through a potentially novel pathway.
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15
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Oriuchi N, Aoki M, Ukon N, Washiyama K, Tan C, Shimoyama S, Nishijima KI, Takahashi K, Ito H, Ikezoe T, Zhao S. Possibility of cancer-stem-cell-targeted radioimmunotherapy for acute myelogenous leukemia using 211At-CXCR4 monoclonal antibody. Sci Rep 2020; 10:6810. [PMID: 32321944 PMCID: PMC7176675 DOI: 10.1038/s41598-020-63557-9] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2020] [Accepted: 04/02/2020] [Indexed: 12/18/2022] Open
Abstract
To explore stem-cell-targeted radioimmunotherapy with α-particles in acute myelogenous leukemia (AML), pharmacokinetics and dosimetry of the 211At-labeled anti-C-X-C chemokine receptor type 4 monoclonal antibody (211At-CXCR4 mAb) were conducted using tumor xenografted mice. The biological half-life of 211At-CXCR4 mAb in blood was 15.0 h. The highest tumor uptake of 5.05%ID/g with the highest tumor-to-muscle ratio of 8.51 ± 6.14 was obtained at 6 h. Radiation dosimetry estimated with a human phantom showed absorbed doses of 0.512 mGy/MBq in the bone marrow, 0.287 mGy/MBq in the kidney, and <1 mGy/MBq in other major organs except bone. Sphere model analysis revealed 22.8 mGy/MBq in a tumor of 10 g; in this case, the tumor-to-bone marrow and tumor-to-kidney ratios were 44.5 and 79.4, respectively. The stem-cell-targeted α-particle therapy using 211At-CXCR4 mAb for AML appears possible and requires further therapeutic studies.
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Affiliation(s)
- Noboru Oriuchi
- Advanced Clinical Research Center, Fukushima Global Medical Science Center, Fukushima Medical University, Fukushima, 960-1295, Japan. .,Department of Nuclear Medicine, Fukushima Medical University, Fukushima, 960-1295, Japan.
| | - Miho Aoki
- Advanced Clinical Research Center, Fukushima Global Medical Science Center, Fukushima Medical University, Fukushima, 960-1295, Japan
| | - Naoyuki Ukon
- Advanced Clinical Research Center, Fukushima Global Medical Science Center, Fukushima Medical University, Fukushima, 960-1295, Japan
| | - Kohshin Washiyama
- Advanced Clinical Research Center, Fukushima Global Medical Science Center, Fukushima Medical University, Fukushima, 960-1295, Japan
| | - Chengbo Tan
- Advanced Clinical Research Center, Fukushima Global Medical Science Center, Fukushima Medical University, Fukushima, 960-1295, Japan
| | - Saki Shimoyama
- Advanced Clinical Research Center, Fukushima Global Medical Science Center, Fukushima Medical University, Fukushima, 960-1295, Japan
| | - Ken-Ichi Nishijima
- Advanced Clinical Research Center, Fukushima Global Medical Science Center, Fukushima Medical University, Fukushima, 960-1295, Japan
| | - Kazuhiro Takahashi
- Advanced Clinical Research Center, Fukushima Global Medical Science Center, Fukushima Medical University, Fukushima, 960-1295, Japan
| | - Hiroshi Ito
- Advanced Clinical Research Center, Fukushima Global Medical Science Center, Fukushima Medical University, Fukushima, 960-1295, Japan.,Department of Radiology, Fukushima Medical University, Fukushima, 960-1295, Japan
| | - Takayuki Ikezoe
- Department of Hematology, Fukushima Medical University, Fukushima, 960-1295, Japan
| | - Songji Zhao
- Advanced Clinical Research Center, Fukushima Global Medical Science Center, Fukushima Medical University, Fukushima, 960-1295, Japan
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16
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Mohammadi Kian M, Salemi M, Bahadoran M, Haghi A, Dashti N, Mohammadi S, Rostami S, Chahardouli B, Babakhani D, Nikbakht M. Curcumin Combined with Thalidomide Reduces Expression of STAT3 and Bcl-xL, Leading to Apoptosis in Acute Myeloid Leukemia Cell Lines. DRUG DESIGN DEVELOPMENT AND THERAPY 2020; 14:185-194. [PMID: 32021103 PMCID: PMC6970263 DOI: 10.2147/dddt.s228610] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/25/2019] [Accepted: 12/16/2019] [Indexed: 12/29/2022]
Abstract
Introduction Acute myeloid leukemia (AML) is a type of blood disorder that exhibits uncontrolled growth and reduced ability to undergo apoptosis. Signal transducer and activator of transcription 3 (STAT3) is a family member of transcription factors which promotes carcinogenesis in most human cancers. This effect on AML is accomplished through deregulation of several critical genes, such as B cell lymphoma-extra-large (BCL-XL) which is anti-apoptotic protein. The aim of this study was to evaluate the effect of curcumin (CUR) and thalidomide (THAL) on apoptosis induction and also the alteration of the mRNA expression level of STAT3 and BCL-XL mRNA on AML cell line compounds. Methods The growth inhibitory effects of CUR and THAL and their combination were measured by MTT assay in U937 and KG-1 cell lines. The rates of apoptosis induction and cell cycle analysis were measured by concurrent staining with Annexin V and PI. The mRNA expression level of STAT3 and BCL-XL was evaluated by Real-Time PCR. Results CUR inhibited proliferation and induced apoptosis in both KG-1 and U937 cells and this effect increased by combination with THAL. The expression level of STAT3 and BCL-XL was significantly down-regulated in KG-1 cells after treatment by CUR and THAL and their combination. Conclusion Overall, our findings suggested that down-regulation of STAT3 and BCL-XL mRNA expression in response to CUR and THAL treatment lead to inhibition of cell growth and induction of apoptosis.
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Affiliation(s)
- Mahnaz Mohammadi Kian
- Hematology Oncology and Stem Cell Transplantation Research Center, Tehran University of Medical Sciences, Tehran, Iran.,Hematologic Malignancies Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Mahdieh Salemi
- Hematology Oncology and Stem Cell Transplantation Research Center, Tehran University of Medical Sciences, Tehran, Iran.,Hematologic Malignancies Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Mohammad Bahadoran
- Department of Biochemistry, Institute of Biochemistry and Biophysics, University of Tehran, Tehran, Iran
| | - Atousa Haghi
- Hematology Oncology and Stem Cell Transplantation Research Center, Tehran University of Medical Sciences, Tehran, Iran.,Young Researchers & Elite Club Tehran Medical Sciences, Islamic Azad University, Tehran, Iran
| | - Nasrin Dashti
- Department of Medical Laboratory Sciences, School of Allied Health Sciences, Tehran University of Medical Sciences, Tehran, Iran
| | - Saeed Mohammadi
- Hematology Oncology and Stem Cell Transplantation Research Center, Tehran University of Medical Sciences, Tehran, Iran.,Hematologic Malignancies Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Shahrbano Rostami
- Hematology Oncology and Stem Cell Transplantation Research Center, Tehran University of Medical Sciences, Tehran, Iran.,Hematologic Malignancies Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Bahram Chahardouli
- Hematology Oncology and Stem Cell Transplantation Research Center, Tehran University of Medical Sciences, Tehran, Iran.,Hematologic Malignancies Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Davood Babakhani
- Hematology Oncology and Stem Cell Transplantation Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Mohsen Nikbakht
- Hematology Oncology and Stem Cell Transplantation Research Center, Tehran University of Medical Sciences, Tehran, Iran.,Hematologic Malignancies Research Center, Tehran University of Medical Sciences, Tehran, Iran
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17
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Liu B, Ma H, Liu Q, Xiao Y, Pan S, Zhou H, Jia L. MiR-29b/Sp1/FUT4 axis modulates the malignancy of leukemia stem cells by regulating fucosylation via Wnt/β-catenin pathway in acute myeloid leukemia. J Exp Clin Cancer Res 2019; 38:200. [PMID: 31097000 PMCID: PMC6524323 DOI: 10.1186/s13046-019-1179-y] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2019] [Accepted: 04/15/2019] [Indexed: 01/02/2023] Open
Abstract
BACKGROUND Acute myeloid leukemia (AML) is initiated and maintained by a unique, small subset of leukemia stem cells (LSCs). LSCs are characterized by unrestricted self-renewal and contribute to the malignancy of leukemia. Aberrant protein fucosylation is associated with AML progression. However, it is still less understood that the miR-29b/Sp1/FUT4 crosstalk involved in the fucosylation-mediated LSCs malignancy in AML. METHODS AML cell lines were sorted by magnetic microbeads to obtain the CD34 + CD38- sub-population. The key biomarkers for LSCs were identified by flow cytometry. Fucosyltransferase genes were screened by qRT-PCR, and FUT4 was focused. Effect of FUT4 on LSCs malignancy was determined by CCK8 assay, sphere formation assay, immunofluorescence staining, apoptosis and in vivo xenografts experiments. The linkage of FUT4 promoter and Sp1 was confirmed by dual-luciferase reporter gene assay. ChIP-PCR assay was used to show the directly binding of Sp1 and FUT4 promoter. Activity of Wnt//β-catenin pathway was determined by western blot. Overall survival curves were diagrammed by Kaplan-Meier analysis. RESULTS Here, the expressional profiles of 11 fucosyltransferase genes were different comparing LSCs and non-LSCs of KG-1a and MOLM13 cells, whereas CD34 + CD38- cells exhibited higher expression of FUT4. Functionally, alteration of FUT4 in CD34 + CD38- cells modulated LSCs malignant behaviors both in vitro and in vivo. Transcriptional inhibitor actinomycin D (Act D) or translational inhibitor cycloheximide (CHX) prevented LSCs progression, and Sp1 was identified as the efficient regulator of FUT4 transcription. Moreover, miR-29b directly affected the binding of Sp1 and FUT4 promoter region, which further mediated LSCs proliferation, apoptosis and drug-resistance through fucosylated-CD44 via activation of Wnt/β-catenin pathway. Clinically, Sp1 and FUT4 were up-regulated and positively correlated with poor overall survival of AML patients. CONCLUSION These data indicated that miR-29b/Sp1/FUT4 axis promoted the malignant behaviors of LSCs by regulating fucosylated CD44 via Wnt/β-catenin pathway. Identifying LSCs surface markers and targeting LSCs were important for the development of potential therapies in AML.
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MESH Headings
- Animals
- Biomarkers, Tumor
- Cell Line, Tumor
- Disease Models, Animal
- Disease Progression
- Female
- Fucosyltransferases/genetics
- Gene Expression Profiling
- Gene Expression Regulation, Leukemic
- Humans
- Kaplan-Meier Estimate
- Leukemia, Myeloid, Acute/genetics
- Leukemia, Myeloid, Acute/metabolism
- Leukemia, Myeloid, Acute/mortality
- Leukemia, Myeloid, Acute/pathology
- Male
- Mice
- MicroRNAs/genetics
- Neoplastic Stem Cells/metabolism
- RNA Interference
- Sp1 Transcription Factor/genetics
- Wnt Signaling Pathway
- Xenograft Model Antitumor Assays
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Affiliation(s)
- Bing Liu
- College of Laboratory Medicine, Dalian Medical University, 9 Lushunnan Road Xiduan, Dalian, 116044 Liaoning Province China
| | - Hongye Ma
- Department of Clinical Laboratory, Beijing Hospital of Traditional Chinese Medicine Affiliated to Capital University of Medicine Sciences, Beijing, 100010 China
| | - Qianqian Liu
- College of Laboratory Medicine, Dalian Medical University, 9 Lushunnan Road Xiduan, Dalian, 116044 Liaoning Province China
| | - Yang Xiao
- College of Laboratory Medicine, Dalian Medical University, 9 Lushunnan Road Xiduan, Dalian, 116044 Liaoning Province China
| | - Shimeng Pan
- College of Laboratory Medicine, Dalian Medical University, 9 Lushunnan Road Xiduan, Dalian, 116044 Liaoning Province China
| | - Huimin Zhou
- Department of Microbiology, Dalian Medical University, Dalian, 116044 Liaoning Province China
| | - Li Jia
- College of Laboratory Medicine, Dalian Medical University, 9 Lushunnan Road Xiduan, Dalian, 116044 Liaoning Province China
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18
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Xu DD, Wang Y, Zhou PJ, Qin SR, Zhang R, Zhang Y, Xue X, Wang J, Wang X, Chen HC, Wang X, Pan YW, Zhang L, Yan HZ, Liu QY, Liu Z, Chen SH, Chen HY, Wang YF. The IGF2/IGF1R/Nanog Signaling Pathway Regulates the Proliferation of Acute Myeloid Leukemia Stem Cells. Front Pharmacol 2018; 9:687. [PMID: 30013477 PMCID: PMC6036281 DOI: 10.3389/fphar.2018.00687] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2017] [Accepted: 06/07/2018] [Indexed: 12/17/2022] Open
Abstract
Acute myeloid leukemia is an aggressive disease characterized by clonal proliferation and differentiation into immature hematopoietic cells of dysfunctional myeloid precursors. Accumulating evidence shows that CD34+CD38- leukemia stem cells (LSCs) are responsible for drug resistance, metastasis, and relapse of leukemia. In this study, we found that Nanog, a transcription factor in stem cells, is significantly overexpressed in CD34+ populations from patients with acute myeloid leukemia and in LSCs from leukemia cell lines. Our data demonstrate that the knockdown of Nanog inhibited proliferation and induced cell cycle arrest and cell apoptosis. Moreover, Nanog silencing suppressed the leukemogenesis of LSCs in mice. In addition, we found that these functions of Nanog were regulated by the insulin-like growth factor receptor (IGF1R) signaling pathway. Nanog overexpression rescued the colony formation ability of LSCs treated with picropodophyllin (PPP), an IGF1R inhibitor. By contrast, knockdown of Nanog abolished the effects of IGF2 on the colony formation ability of these LSCs. These findings suggest that the IGF2/IGF1R/Nanog signaling pathway plays a critical role in LSC proliferation.
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Affiliation(s)
- Dan-Dan Xu
- College of Life Science and Technology, Jinan University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Bioengineering Medicine, Jinan University, Guangzhou, China.,Guangdong Food and Drug Vocational College, Guangzhou, China
| | - Ying Wang
- College of Life Science and Technology, Jinan University, Guangzhou, China
| | - Peng-Jun Zhou
- College of Life Science and Technology, Jinan University, Guangzhou, China
| | - Shu-Rong Qin
- College of Life Science and Technology, Jinan University, Guangzhou, China
| | - Rong Zhang
- State Key Laboratory of Oncology in South China and Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Yi Zhang
- Department of Biochemistry and Molecular Medicine, Cancer Center, George Washington University School of Medicine and Health Sciences, Washington, DC, United States
| | - Xue Xue
- Guangdong Food and Drug Vocational College, Guangzhou, China
| | - Jianping Wang
- Guangdong Food and Drug Vocational College, Guangzhou, China
| | - Xia Wang
- Guangdong Food and Drug Vocational College, Guangzhou, China
| | - Hong-Ce Chen
- Department of Pathogen Biology and Immunology, School of Basic Course, Guangdong Pharmaceutical University, Guangzhou, China
| | - Xiao Wang
- College of Life Science and Technology, Jinan University, Guangzhou, China
| | - Yu-Wei Pan
- College of Pharmacy, Jinan University, Guangzhou, China
| | - Li Zhang
- College of Life Science and Technology, Jinan University, Guangzhou, China
| | - Hai-Zhao Yan
- Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi, Kofu, Japan
| | - Qiu-Ying Liu
- College of Life Science and Technology, Jinan University, Guangzhou, China
| | - Zhong Liu
- College of Life Science and Technology, Jinan University, Guangzhou, China
| | - Su-Hong Chen
- College of Life Science and Technology, Jinan University, Guangzhou, China.,Guangdong Food and Drug Vocational College, Guangzhou, China
| | - Hong-Yuan Chen
- Department of Pathogen Biology and Immunology, School of Basic Course, Guangdong Pharmaceutical University, Guangzhou, China
| | - Yi-Fei Wang
- College of Life Science and Technology, Jinan University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Bioengineering Medicine, Jinan University, Guangzhou, China
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19
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Roboz GJ, Ritchie EK, Dault Y, Lam L, Marshall DC, Cruz NM, Hsu HTC, Hassane DC, Christos PJ, Ippoliti C, Scandura JM, Guzman ML. Phase I trial of plerixafor combined with decitabine in newly diagnosed older patients with acute myeloid leukemia. Haematologica 2018; 103:1308-1316. [PMID: 29724902 PMCID: PMC6068018 DOI: 10.3324/haematol.2017.183418] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2017] [Accepted: 04/27/2018] [Indexed: 01/09/2023] Open
Abstract
Acute myeloid leukemia carries a dismal prognosis in older patients. The objective of this study was to investigate the safety and efficacy of decitabine combined with the CXCR4 antagonist plerixafor in newly diagnosed older patients with acute myeloid leukemia and to evaluate the effects of plerixafor on leukemia stem cells. Patients were treated with monthly cycles of decitabine 20 mg/m2 days 1–10 and escalating doses of plerixafor (320–810 mcg/kg) days 1–5. Sixty-nine patients were treated, with an overall response rate of 43%. Adverse karyotype did not predict response (P=0.31). Prior hypomethylating agent treatment was the strongest independent predictor of adverse overall survival (hazard ratio 3.1; 95%CI: 1.3–7.3; P=0.008) and response (14% in previously treated patients, 46% in treatment naïve; P=0.002). As expected, the most common toxicities were myelosuppression and infection. Plerixafor induced mobilization of leukemia stem and progenitor cells, but did not cause clinically significant hyperleukocytosis. Reduction in leukemia stem cells appeared to correlate with duration of response. Plerixafor can be safely added to decitabine in poor-prognosis, elderly acute myeloid leukemia patients. The maximum tolerated dose of the combination was 810 mcg/kg. While mobilization of leukemia stem cells was observed in some patients, the clinical benefit of adding plerixafor was uncertain. This trial was registered at clinicaltrials.gov identifier: 01352650.
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Affiliation(s)
- Gail J Roboz
- Division of Hematology and Medical Oncology, Leukemia Program, Weill Cornell Medicine/New York-Presbyterian Hospital, New York, NY, USA
| | - Ellen K Ritchie
- Division of Hematology and Medical Oncology, Leukemia Program, Weill Cornell Medicine/New York-Presbyterian Hospital, New York, NY, USA
| | - Yulia Dault
- Division of Hematology and Medical Oncology, Leukemia Program, Weill Cornell Medicine/New York-Presbyterian Hospital, New York, NY, USA
| | - Linda Lam
- Division of Hematology and Medical Oncology, Leukemia Program, Weill Cornell Medicine/New York-Presbyterian Hospital, New York, NY, USA
| | - Danielle C Marshall
- Division of Hematology and Medical Oncology, Leukemia Program, Weill Cornell Medicine/New York-Presbyterian Hospital, New York, NY, USA
| | - Nicole M Cruz
- Division of Hematology and Medical Oncology, Leukemia Program, Weill Cornell Medicine/New York-Presbyterian Hospital, New York, NY, USA
| | - Hsiao-Ting C Hsu
- Division of Hematology and Medical Oncology, Leukemia Program, Weill Cornell Medicine/New York-Presbyterian Hospital, New York, NY, USA
| | - Duane C Hassane
- Division of Hematology and Medical Oncology, Leukemia Program, Weill Cornell Medicine/New York-Presbyterian Hospital, New York, NY, USA
| | - Paul J Christos
- Division of Biostatistics and Epidemiology, Weill Cornell Medicine, New York, NY, USA
| | - Cindy Ippoliti
- Division of Hematology and Medical Oncology, Leukemia Program, Weill Cornell Medicine/New York-Presbyterian Hospital, New York, NY, USA
| | - Joseph M Scandura
- Division of Hematology and Medical Oncology, Leukemia Program, Weill Cornell Medicine/New York-Presbyterian Hospital, New York, NY, USA
| | - Monica L Guzman
- Division of Hematology and Medical Oncology, Leukemia Program, Weill Cornell Medicine/New York-Presbyterian Hospital, New York, NY, USA
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20
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Yang SF, Ma R, Pan LL, Cao J, Sheng N. RKIP and peroxiredoxin 2 expression predicts the proliferative potential of gastric cancer stem cells. Oncol Lett 2018; 15:3173-3177. [PMID: 29435053 PMCID: PMC5778773 DOI: 10.3892/ol.2017.7700] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2016] [Accepted: 04/25/2017] [Indexed: 12/11/2022] Open
Abstract
Gastric cancer is associated with a high mortality rate, with the development of gastric cancer stem cells underlying this. Gastric cancer stem cells are responsible for tumor initiation, progression and recurrence. However, the link between gastric cancer and gastric cancer stem cells remains to be fully understood. Murine models mimic a human microenvironment more accurately than in vitro studies and are useful models for understanding the behavior of different markers. The present study compared the expression of cluster of differentiation 44 (CD44), a stem cell marker, with the expression of other cancer-associated markers, including Raf kinase inhibitor protein (RKIP) and peroxiredoxin 2, in different pathological conditions of gastric cancer development using histological, immunohistological and western blot analyses. Initially, the murine model of gastric cancer was established using N-methyl-N-nitrosourea, a chemical carcinogen. Following initiation of cancer, immunohistochemistry was used to compare the expression of CD44, RKIP and peroxiredoxin 2 at different stages of cancer development. The results suggested CD44 and peroxiredoxin 2 expression was upregulated as the tumor progressed. However, expression of RKIP, a metastasis suppressor, was elevated in the initial stage of gastric cancer and suppressed during the aggressive stages. In agreement with previous data suggesting higher expressions of RKIP in the initial stages of cancer and its downregulation in the advanced stage, the results of the present study revealed that RKIP exhibited a negative effect on initial tumor development, and that the downregulation of RKIP in the advanced stages of cancer facilitated CD44 and peroxiredoxin 2 overexpression.
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Affiliation(s)
- Shao-Feng Yang
- Department of Gastroenterology, Jining First People's Hospital, Jining, Shandong 272011, P.R. China
| | - Ran Ma
- Department of Gastroenterology, Jining First People's Hospital, Jining, Shandong 272011, P.R. China
| | - Li-Li Pan
- Department of Gastroenterology, Jining First People's Hospital, Jining, Shandong 272011, P.R. China
| | - Jing Cao
- Department of Gastroenterology, Jining First People's Hospital, Jining, Shandong 272011, P.R. China
| | - Nan Sheng
- Department of Gastroenterology, Jining First People's Hospital, Jining, Shandong 272011, P.R. China
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21
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Forte D, Salvestrini V, Corradi G, Rossi L, Catani L, Lemoli RM, Cavo M, Curti A. The tissue inhibitor of metalloproteinases-1 (TIMP-1) promotes survival and migration of acute myeloid leukemia cells through CD63/PI3K/Akt/p21 signaling. Oncotarget 2018; 8:2261-2274. [PMID: 27903985 PMCID: PMC5356797 DOI: 10.18632/oncotarget.13664] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2016] [Accepted: 11/21/2016] [Indexed: 12/15/2022] Open
Abstract
We and others have shown that the Tissue Inhibitor of Metalloproteinases-1 (TIMP-1), a member of the inflammatory network exerting pleiotropic effects in the bone marrow (BM) microenvironment, regulates the survival and proliferation of different cell types, including normal hematopoietic progenitor cells. Moreover, TIMP-1 has been shown to be involved in cancer progression. However, its role in leukemic microenvironment has not been addressed. Here, we investigated the activity of TIMP-1 on Acute Myelogenous Leukemia (AML) cell functions. First, we found that TIMP-1 levels were increased in the BM plasma of AML patients at diagnosis. In vitro, recombinant human (rh)TIMP-1 promoted the survival and cell cycle S-phase entry of AML cells. These kinetic effects were related to the downregulation of cyclin-dependent kinase inhibitor p21. rhTIMP-1 increases CXCL12-driven migration of leukemic cells through PI3K signaling. Interestingly, activation of CD63 receptor was required for TIMP-1's cytokine/chemokine activity. Of note, rhTIMP-1 stimulation modulated mRNA expression of Hypoxia Inducible Factor (HIF)-1α, downstream of PI3K/Akt activation. We then co-cultured AML cells with normal or leukemic mesenchymal stromal cells (MSCs) to investigate the interaction of TIMP-1 with cellular component(s) of BM microenvironment. Our results showed that the proliferation and migration of leukemic cells were greatly enhanced by rhTIMP-1 in presence of AML-MSCs as compared to normal MSCs. Thus, we demonstrated that TIMP-1 modulates leukemic blasts survival, migration and function via CD63/PI3K/Akt/p21 signaling. As a “bad actor” in a “bad soil”, we propose TIMP-1 as a potential novel therapeutic target in leukemic BM microenvironment.
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Affiliation(s)
- Dorian Forte
- Department of Experimental, Diagnostic and Specialty Medicine (DIMES), Institute of Hematology "L. and A. Seràgnoli", University of Bologna, Bologna, Italy
| | - Valentina Salvestrini
- Department of Experimental, Diagnostic and Specialty Medicine (DIMES), Institute of Hematology "L. and A. Seràgnoli", University of Bologna, Bologna, Italy
| | - Giulia Corradi
- Department of Experimental, Diagnostic and Specialty Medicine (DIMES), Institute of Hematology "L. and A. Seràgnoli", University of Bologna, Bologna, Italy
| | - Lara Rossi
- Department of Experimental, Diagnostic and Specialty Medicine (DIMES), Institute of Hematology "L. and A. Seràgnoli", University of Bologna, Bologna, Italy
| | - Lucia Catani
- Department of Experimental, Diagnostic and Specialty Medicine (DIMES), Institute of Hematology "L. and A. Seràgnoli", University of Bologna, Bologna, Italy
| | - Roberto M Lemoli
- Clinic of Hematology, Department of Internal Medicine (DiMI), University of Genoa, Genoa, Italy
| | - Michele Cavo
- Department of Experimental, Diagnostic and Specialty Medicine (DIMES), Institute of Hematology "L. and A. Seràgnoli", University of Bologna, Bologna, Italy
| | - Antonio Curti
- Department of Experimental, Diagnostic and Specialty Medicine (DIMES), Institute of Hematology "L. and A. Seràgnoli", University of Bologna, Bologna, Italy
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22
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Lee YH, Liao YJ, Huang CH, Chang FL, Fan TH, Twu YC. Branched I antigens on leukemia cells enhanced sensitivity against natural killer-cell cytotoxicity through affecting the target-effector interaction. Transfusion 2017; 57:1040-1051. [PMID: 28337749 DOI: 10.1111/trf.13982] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2016] [Revised: 11/09/2016] [Accepted: 11/17/2016] [Indexed: 12/25/2022]
Abstract
BACKGROUND The aberrant glycosylation on proteins and lipids has been implicated in malignant transformations for promoting the tumorigenesis, metastasis, and evasion from the host immunity. The I-branching β-1,6-N-acetylglucosaminyltransferase, converting the straight i to branched I histo-blood group antigens, reportedly could influence the migration, invasion, and metastasis of solid tumors. STUDY DESIGN AND METHODS We first chose the highly cytotoxic natural killer (NK)-92MI cells as effector against leukemia for this cell line has been used in several clinical trials. Fluorescence-activated cell sorting and nonradioactive cytotoxicity assay were performed to reexamine the role of NK-activating receptors, their corresponding ligands, and the tumor-associated carbohydrate antigens in this NK-92MI-leukemia in vitro system. The I role on cytotoxic mechanism was further studied especially on the effector-target interactions by cytotoxic analysis and conjugate formation assay. RESULTS We showed that expression levels of leukemia surface ligands for NK-activating receptors did not positively reflect susceptibility to NK-92MI. Instead, the expression of I antigen on the leukemia cells was found important in mediating the susceptibility to NK targeting by affecting the interaction with effector cells. Furthermore, susceptibility was shown to dramatically increase while overexpressing branched I antigens on the I- cells. By both conjugate and cytotoxicity assay, we revealed that the presence of I antigen on leukemia cells enhanced the interaction with NK-92MI cells, increasing susceptibility to cell-mediated lysis. CONCLUSION In our system, branched I antigens on the leukemia were involved in the immunosurveillance mediated by NK cells specifically through affecting the effector-target interaction.
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Affiliation(s)
- Yen-Hua Lee
- Department of Biotechnology and Laboratory Science in Medicine, National Yang-Ming University, Taipei, Taiwan.,Department of Medical Research, Mackay Memorial Hospital, New Taipei City, Taiwan
| | - Yi-Jen Liao
- School of Medical Laboratory Science and Biotechnology, College of Medical Science and Technology
| | - Chin-Han Huang
- Department of Biotechnology and Laboratory Science in Medicine, National Yang-Ming University, Taipei, Taiwan
| | - Fu-Ling Chang
- Department of Biotechnology and Laboratory Science in Medicine, National Yang-Ming University, Taipei, Taiwan.,The Center of Translational Medicine, Taipei Medical University, Taipei, Taiwan
| | - Ting-Hsi Fan
- Department of Biotechnology and Laboratory Science in Medicine, National Yang-Ming University, Taipei, Taiwan
| | - Yuh-Ching Twu
- Department of Biotechnology and Laboratory Science in Medicine, National Yang-Ming University, Taipei, Taiwan
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23
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Wang X, Huang S, Chen JL. Understanding of leukemic stem cells and their clinical implications. Mol Cancer 2017; 16:2. [PMID: 28137304 PMCID: PMC5282926 DOI: 10.1186/s12943-016-0574-7] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2016] [Accepted: 12/19/2016] [Indexed: 02/07/2023] Open
Abstract
Since leukemic stem cells (LSCs) or cancer stem cells (CSCs) were found in acute myeloid leukemia (AML) in 1997, extensive studies have been contributed to identification and characterization of such cell populations in various tissues. LSCs are now generally recognized as a heterogeneous cell population that possesses the capacities of self-renewal, proliferation and differentiation. It has been shown that LSCs are regulated by critical surface antigens, microenvironment, intrinsic signaling pathways, and novel molecules such as some ncRNAs. To date, significant progress has been made in understanding of LSCs, leading to the development of numerous LSCs-targeted therapies. Moreover, various novel therapeutic agents targeting LSCs are undergoing clinical trials. Here, we review current knowledge of LSCs, and discuss the potential therapies and their challenges that are being tested in clinical trials for evaluation of their effects on leukemias.
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Affiliation(s)
- Xuefei Wang
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, 100101, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Shile Huang
- Department of Biochemistry and Molecular Biology, Louisiana State University Health Sciences Center, Shreveport, LA, USA
| | - Ji-Long Chen
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, 100101, China. .,University of Chinese Academy of Sciences, Beijing, China. .,College of Animal Sciences, Fujian Agriculture and Forestry University, Fuzhou, China.
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24
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Xu DD, Zhou PJ, Wang Y, Zhang Y, Zhang R, Zhang L, Chen SH, Fu WY, Ruan BB, Xu HP, Hu CZ, Tian L, Qin JH, Wang S, Wang X, Liu QY, Ren Z, Gu XK, Li YH, Liu Z, Wang YF. miR-150 Suppresses the Proliferation and Tumorigenicity of Leukemia Stem Cells by Targeting the Nanog Signaling Pathway. Front Pharmacol 2016; 7:439. [PMID: 27917123 PMCID: PMC5114241 DOI: 10.3389/fphar.2016.00439] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2016] [Accepted: 11/03/2016] [Indexed: 12/18/2022] Open
Abstract
Proliferation, a key feature of cancer cells, accounts for the majority of cancer-related diseases resulting in mortality. MicroRNAs (miRNAs) plays important post-transcriptional modulation roles by acting on multiple signaling pathways, but the underlying mechanism in proliferation and tumorigenicity is unclear. Here, we identified the role of miR-150 in proliferation and tumorigenicity in leukemia stem cells (LSCs; CD34+CD38- cells). miR-150 expression was significantly down-regulated in LSCs from leukemia cell lines and clinical samples. Functional assays demonstrated that increased miR-150 expression inhibited proliferation and clonal and clonogenic growth, enhanced chemosensitivity, and attenuated tumorigenic activity of LSCs in vitro. Transplantation animal studies revealed that miR-150 overexpression progressively abrogates tumor growth. Immunohistochemistry assays demonstrated that miR-150 overexpression enhanced caspase-3 level and reduced Ki-67 level. Moreover, luciferase reporter assays indicated Nanog is a direct and functional target of miR-150. Nanog silencing using small interfering RNA recapitulated anti-proliferation and tumorigenicity inhibition effects. Furthermore, miR-150 directly down-regulated the expression of other cancer stem cell factors including Notch2 and CTNNB1. These results provide insights into the specific biological behavior of miR-150 in regulating LSC proliferation and tumorigenicity. Targeting this miR-150/Nanog axis would be a helpful therapeutic strategy to treat acute myeloid leukemia.
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Affiliation(s)
- Dan-Dan Xu
- College of Life Science and Technology, Jinan UniversityGuangzhou, China; College of Biology Technolgy, Guangdong Food and Drug Vocational CollegeGuangzhou, China
| | - Peng-Jun Zhou
- College of Life Science and Technology, Jinan University Guangzhou, China
| | - Ying Wang
- College of Life Science and Technology, Jinan UniversityGuangzhou, China; Faculty of Environmental and Biological Engineering, Guangdong University of Petrochemical TechnologyMaoming, China
| | - Yi Zhang
- Section of Otolaryngology, Department of Surgery, Yale School of Medicine, New Haven CT, USA
| | - Rong Zhang
- State Key Laboratory of Oncology in South China and Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center Guangzhou, China
| | - Li Zhang
- College of Life Science and Technology, Jinan University Guangzhou, China
| | - Su-Hong Chen
- College of Biology Technolgy, Guangdong Food and Drug Vocational College Guangzhou, China
| | - Wu-Yu Fu
- Faculty of Environmental and Biological Engineering, Guangdong University of Petrochemical Technology Maoming, China
| | - Bi-Bo Ruan
- Faculty of Environmental and Biological Engineering, Guangdong University of Petrochemical Technology Maoming, China
| | - Hai-Peng Xu
- College of Life Science and Technology, Jinan University Guangzhou, China
| | - Chao-Zhi Hu
- College of Life Science and Technology, Jinan University Guangzhou, China
| | - Lu Tian
- College of Life Science and Technology, Jinan University Guangzhou, China
| | - Jin-Hong Qin
- College of Life Science and Technology, Jinan University Guangzhou, China
| | - Sheng Wang
- College of Life Science and Technology, Jinan University Guangzhou, China
| | - Xiao Wang
- College of Life Science and Technology, Jinan University Guangzhou, China
| | - Qiu-Ying Liu
- College of Life Science and Technology, Jinan University Guangzhou, China
| | - Zhe Ren
- College of Life Science and Technology, Jinan University Guangzhou, China
| | - Xue-Kui Gu
- The First Affiliated Hospital, Guangzhou Hospital of Traditional Chinese Medicine Guangzhou, China
| | - Yao-He Li
- The First Affiliated Hospital, Guangzhou Hospital of Traditional Chinese Medicine Guangzhou, China
| | - Zhong Liu
- College of Life Science and Technology, Jinan University Guangzhou, China
| | - Yi-Fei Wang
- College of Life Science and Technology, Jinan University Guangzhou, China
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25
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Mohammadi S, Ghaffari SH, Shaiegan M, Nikogoftar Zarif M, Nikbakht M, Alimoghaddam K, Ghavamzadeh A. Curcumin Veto the Effects of Osteopontin (OPN) Specific Inhibitor on Leukemic Stem Cell Colony Forming Potential via Promotion of OPN Overexpression. Int J Hematol Oncol Stem Cell Res 2016; 10:120-9. [PMID: 27489587 PMCID: PMC4969556] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
Abstract
BACKGROUND Acute myeloid leukemia (AML) is an immunophenotypically heterogeneous malignant disease, in which CD34 positivity is associated with poor prognosis. Osteopontin (OPN) plays different roles in physiologic and pathologic conditions like: survival, metastasis and cell protection from cytotoxic and apoptotic stimuli. Due to anti-apoptotic effect of OPN in normal and malignant cells, silencing of OPN leads to elevation of sensitivity towards chemotherapeutic agents and attenuates cancer cells migration and invasion. Therefore, the aim of this study was to evaluate OPN roles in modulating curcumin-mediated growth inhibitory on leukemic stem cells (LSCs) colony forming potential and survival in AML cell lines and primary CD34+/CD38- bone marrow-derived AML cells. MATERIALS AND METHODS Primary human CD34+/CD38- cells were isolated from bone marrow mononuclear cells of 10 AML patients at initial state of diagnosis, using a CD34 Multi sort kit. The growth inhibitory effects of curcumin (CUR) were evaluated by MTT and colony-formation assays. Apoptosis was analyzed by 7AAD assay in CD34+ KG-1, U937 cell lines and primary isolated cells. Short interfering RNA (siRNA) against OPN was used for OPN silencing in both cell lines and primary AML cells. Then, transfected cells were incubated with/without curcumin. The change in OPN gene expression was examined by Real-time PCR. RESULTS CUR inhibited proliferation and induced apoptosis in both KG-1 and U937 cells and also primary isolated AML cells. OPN silencing by siRNA increased the susceptibility of KG-1, U937 and primary CD34+/CD38- AML cells to apoptosis. Moreover, soft agar colony assays revealed that silencing of OPN with siRNA significantly decreased colony numbers in LSCs compared with the non-targeting group. Furthermore, CD34+/CD38- populations as a main LSCs compartment through OPN overexpression towards CUR treatment might be nullified the inhibitory effects of OPN siRNA on their survival and colony forming potential. CONCLUSION Taken together, our results suggested that knockdown of OPN using OPN specific siRNA significantly decreased colony numbers in LSCs and this effect might be vetoed by LSCs via induction of OPN overexpressionin combination of CUR and siRNA.
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Affiliation(s)
- Saeed Mohammadi
- Iranian Blood Transfusion Research Center, High Institute for Education and Research in Transfusion Medicine, Tehran, Iran,Hematology-Oncology and Stem Cell Transplantation Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Seyed H. Ghaffari
- Hematology-Oncology and Stem Cell Transplantation Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Mojgan Shaiegan
- Iranian Blood Transfusion Research Center, High Institute for Education and Research in Transfusion Medicine, Tehran, Iran
| | - Mahin Nikogoftar Zarif
- Iranian Blood Transfusion Research Center, High Institute for Education and Research in Transfusion Medicine, Tehran, Iran
| | - Mohsen Nikbakht
- Hematology-Oncology and Stem Cell Transplantation Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Kamran Alimoghaddam
- Hematology-Oncology and Stem Cell Transplantation Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Ardeshir Ghavamzadeh
- Hematology-Oncology and Stem Cell Transplantation Research Center, Tehran University of Medical Sciences, Tehran, Iran
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26
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Mohammadi S, Ghaffari SH, Shaiegan M, Zarif MN, Nikbakht M, Akbari Birgani S, Alimoghadam K, Ghavamzadeh A. Acquired expression of osteopontin selectively promotes enrichment of leukemia stem cells through AKT/mTOR/PTEN/β-catenin pathways in AML cells. Life Sci 2016; 152:190-8. [DOI: 10.1016/j.lfs.2016.04.003] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2016] [Revised: 03/31/2016] [Accepted: 04/03/2016] [Indexed: 01/11/2023]
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27
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Ordóñez PE, Sharma KK, Bystrom LM, Alas MA, Enriquez RG, Malagón O, Jones DE, Guzman ML, Compadre CM. Dehydroleucodine, a Sesquiterpene Lactone from Gynoxys verrucosa, Demonstrates Cytotoxic Activity against Human Leukemia Cells. JOURNAL OF NATURAL PRODUCTS 2016; 79:691-6. [PMID: 27057812 DOI: 10.1021/acs.jnatprod.5b00383] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
The sesquiterpene lactones dehydroleucodine (1) and leucodine (2) were isolated from Gynoxys verrucosa, a species used in traditional medicine in southern Ecuador. The activity of these compounds was determined against eight acute myeloid leukemia (AML) cell lines and compared with their activity against normal peripheral blood mononuclear cells. Compound 1 showed cytotoxic activity against the tested cell lines, with LD50 values between 5.0 and 18.9 μM. Compound 2 was inactive against all of the tested cell lines, demonstrating that the exocyclic methylene in the lactone ring is required for cytotoxic activity. Importantly, compound 1 induced less toxicity to normal blood cells than to AML cell lines and was active against human AML cell samples from five patients, with an average LD50 of 9.4 μM. Mechanistic assays suggest that compound 1 has a similar mechanism of action to parthenolide (3). Although these compounds have significant structural differences, their lipophilic surface signatures show striking similarities.
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Affiliation(s)
- Paola E Ordóñez
- Department of Pharmaceutical Sciences, University of Arkansas for Medical Sciences , Little Rock, Arkansas 72205, United States
- Departamento de Química, Universidad Técnica Particular de Loja , Loja, Ecuador
- Department of Chemistry, University of Arkansas at Little Rock , Little Rock, Arkansas 72205, United States
| | - Krishan K Sharma
- Division of Hematology/Oncology, Department of Medicine, Weill Cornell Medical College , New York, New York 10065, United States
| | - Laura M Bystrom
- Division of Hematology/Oncology, Department of Medicine, Weill Cornell Medical College , New York, New York 10065, United States
| | - Maria A Alas
- Division of Hematology/Oncology, Department of Medicine, Weill Cornell Medical College , New York, New York 10065, United States
| | - Raul G Enriquez
- Instituto de Química, Universidad Nacional Autónoma de México , México DF, México
| | - Omar Malagón
- Departamento de Química, Universidad Técnica Particular de Loja , Loja, Ecuador
| | - Darin E Jones
- Department of Chemistry, University of Arkansas at Little Rock , Little Rock, Arkansas 72205, United States
| | - Monica L Guzman
- Division of Hematology/Oncology, Department of Medicine, Weill Cornell Medical College , New York, New York 10065, United States
| | - Cesar M Compadre
- Department of Pharmaceutical Sciences, University of Arkansas for Medical Sciences , Little Rock, Arkansas 72205, United States
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28
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Zhang R, Yang J, Zhou Y, Shami PJ, Kopeček J. N-(2-Hydroxypropyl)methacrylamide Copolymer-Drug Conjugates for Combination Chemotherapy of Acute Myeloid Leukemia. Macromol Biosci 2015. [PMID: 26222892 DOI: 10.1002/mabi.201500193] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
There is a need for new treatment strategies of acute myeloid leukemia (AML). In this study, four different drugs, including cytarabine, daunorubicin, GDC-0980, and JS-K, were investigated in vitro for the two-drug combinations treatment of AML. The results revealed that cytarabine and GDC-0980 had the strongest synergism. In addition, cell cycle analysis was conducted to investigate the effect of the different combinations on cell division. For future in vivo application, N-(2-hydroxypropyl)methacrylamide (HPMA) copolymer-cytarabine and GDC-0980 conjugates were synthesized, respectively. In vitro studies demonstrated that both conjugates had potent cytotoxicity and their combination also showed strong synergy, suggesting a potential chemotherapeutic strategy for future AML treatment.
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Affiliation(s)
- Rui Zhang
- Department of Pharmaceutics and Pharmaceutical Chemistry/CCCD, University of Utah, Salt Lake City, Utah 84112, USA
| | - Jiyuan Yang
- Department of Pharmaceutics and Pharmaceutical Chemistry/CCCD, University of Utah, Salt Lake City, Utah 84112, USA
| | - Yan Zhou
- Department of Pharmaceutics and Pharmaceutical Chemistry/CCCD, University of Utah, Salt Lake City, Utah 84112, USA
| | - Paul J Shami
- Department of Pharmaceutics and Pharmaceutical Chemistry/CCCD, University of Utah, Salt Lake City, Utah 84112, USA.,Division of Hematology and Hematologic Malignancies and Huntsman Cancer Institute, University of Utah, Salt Lake City, Utah 84112, USA
| | - Jindřich Kopeček
- Department of Pharmaceutics and Pharmaceutical Chemistry/CCCD, University of Utah, Salt Lake City, Utah 84112, USA. .,Department of Bioengineering, University of Utah, Salt Lake City, Utah 84112, USA.
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Functional Characterization of D9, a Novel Deazaneplanocin A (DZNep) Analog, in Targeting Acute Myeloid Leukemia (AML). PLoS One 2015; 10:e0122983. [PMID: 25928216 PMCID: PMC4415792 DOI: 10.1371/journal.pone.0122983] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2014] [Accepted: 02/26/2015] [Indexed: 11/26/2022] Open
Abstract
Aberrant epigenetic events contribute to tumorigenesis of all human cancers. Significant efforts are underway in developing new generation of epigenetic cancer therapeutics. Although clinical trials for agents targeting DNA hypermethylation and histone deacetylation have yielded promising results, developing agents that target histone methylation remains to be in the early stage. We and others have previously reported that 3-Deazaneplanocin A (DZNep) is a histone methylation inhibitor that has a wide range of anticancer effects in various human cancers. Here, focusing on acute myeloid leukemia (AML) as a model, we reported a less toxic analog of DZNep, named D9, which is shown to be efficacious in AML cell lines and patient-derived samples in vitro, as well as AML tumorigenesis in vivo. Gene expression analysis in a panel of AML cell lines treated with D9 identified a set of genes that is associated with D9 sensitivity and implicated in multiple oncogenic signaling pathways. Moreover, we show that D9 is able to deplete the leukemia stem cells (LSC) and abolish chemotherapy-induced LSC enrichment, leading to dramatic elimination of AML cell survival. Thus, D9 appears to be a robust epigenetic compound that may constitute a potential for AML therapy.
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Schulenburg A, Blatt K, Cerny-Reiterer S, Sadovnik I, Herrmann H, Marian B, Grunt TW, Zielinski CC, Valent P. Cancer stem cells in basic science and in translational oncology: can we translate into clinical application? J Hematol Oncol 2015; 8:16. [PMID: 25886184 PMCID: PMC4345016 DOI: 10.1186/s13045-015-0113-9] [Citation(s) in RCA: 65] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2014] [Accepted: 01/14/2015] [Indexed: 02/08/2023] Open
Abstract
Since their description and identification in leukemias and solid tumors, cancer stem cells (CSC) have been the subject of intensive research in translational oncology. Indeed, recent advances have led to the identification of CSC markers, CSC targets, and the preclinical and clinical evaluation of the CSC-eradicating (curative) potential of various drugs. However, although diverse CSC markers and targets have been identified, several questions remain, such as the origin and evolution of CSC, mechanisms underlying resistance of CSC against various targeted drugs, and the biochemical basis and function of stroma cell-CSC interactions in the so-called ‘stem cell niche.’ Additional aspects that have to be taken into account when considering CSC elimination as primary treatment-goal are the genomic plasticity and extensive subclone formation of CSC. Notably, various cell fractions with different combinations of molecular aberrations and varying proliferative potential may display CSC function in a given neoplasm, and the related molecular complexity of the genome in CSC subsets is considered to contribute essentially to disease evolution and acquired drug resistance. In the current article, we discuss new developments in the field of CSC research and whether these new concepts can be exploited in clinical practice in the future.
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Affiliation(s)
- Axel Schulenburg
- Bone Marrow Transplantation Unit, Department of Internal Medicine I, Medical University of Vienna, Währinger Gürtel 18-20, Vienna, A-1090, Wien, Austria. .,Ludwig Boltzmann Cluster Oncology, Medical University of Vienna, Spitalgasse 23, Vienna, 1090, Wien, Austria. .,Department of Medicine I, Stem Cell Transplantation Unit, Medical University of Vienna, Waehringer Guertel 18-20, A-1090, Wien, Austria.
| | - Katharina Blatt
- Department of Medicine I, Division of Hematology and Hemostaseology, Medical University of Vienna, Währinger Gürtel 18-20, Vienna, 1090, Wien, Austria.
| | - Sabine Cerny-Reiterer
- Ludwig Boltzmann Cluster Oncology, Medical University of Vienna, Spitalgasse 23, Vienna, 1090, Wien, Austria. .,Department of Medicine I, Division of Hematology and Hemostaseology, Medical University of Vienna, Währinger Gürtel 18-20, Vienna, 1090, Wien, Austria.
| | - Irina Sadovnik
- Department of Medicine I, Division of Hematology and Hemostaseology, Medical University of Vienna, Währinger Gürtel 18-20, Vienna, 1090, Wien, Austria.
| | - Harald Herrmann
- Ludwig Boltzmann Cluster Oncology, Medical University of Vienna, Spitalgasse 23, Vienna, 1090, Wien, Austria. .,Department of Radiation Therapy, Medical University of Vienna, Spitalgasse 23, Vienna, 1090, Wien, Austria.
| | - Brigitte Marian
- Ludwig Boltzmann Cluster Oncology, Medical University of Vienna, Spitalgasse 23, Vienna, 1090, Wien, Austria. .,Department of Medicine I, Institute for Cancer Research, Medical University of Vienna, Währinger Gürtel 18-20, Vienna, 1090, Wien, Austria.
| | - Thomas W Grunt
- Ludwig Boltzmann Cluster Oncology, Medical University of Vienna, Spitalgasse 23, Vienna, 1090, Wien, Austria. .,Department of Medicine I, Division of Clinical Oncology, Medical University of Vienna, Währinger Gürtel 18-20, Vienna, 1090, Wien, Austria.
| | - Christoph C Zielinski
- Ludwig Boltzmann Cluster Oncology, Medical University of Vienna, Spitalgasse 23, Vienna, 1090, Wien, Austria. .,Department of Medicine I, Division of Clinical Oncology, Medical University of Vienna, Währinger Gürtel 18-20, Vienna, 1090, Wien, Austria.
| | - Peter Valent
- Ludwig Boltzmann Cluster Oncology, Medical University of Vienna, Spitalgasse 23, Vienna, 1090, Wien, Austria. .,Department of Medicine I, Division of Hematology and Hemostaseology, Medical University of Vienna, Währinger Gürtel 18-20, Vienna, 1090, Wien, Austria.
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Abstract
At least several types of human haematological malignancies can now be seen as 'stem-cell diseases'. The best-studied in this context is acute myeloid leukaemia (AML). It has been shown that these diseases are driven by a pool of 'leukaemia stem cells (LSC)', which remain in the quiescent state, have the capacity to survive and self-renew, and are responsible for the recurrence of cancer after classical chemotherapy. It has been understood that LSC must be eliminated in order to cure patients suffering from haematological cancers. Recent advances in LSC research have allowed for description of LSC phenotype and identification of potential targets for anti-LSC therapies. This concise review summarises the current view on LSC biology and targeted approaches against LSC.
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Blatt K, Herrmann H, Hoermann G, Willmann M, Cerny-Reiterer S, Sadovnik I, Herndlhofer S, Streubel B, Rabitsch W, Sperr WR, Mayerhofer M, Rülicke T, Valent P. Identification of campath-1 (CD52) as novel drug target in neoplastic stem cells in 5q-patients with MDS and AML. Clin Cancer Res 2014; 20:3589-602. [PMID: 24799522 DOI: 10.1158/1078-0432.ccr-13-2811] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
PURPOSE The CD52-targeted antibody alemtuzumab induces major clinical responses in a group of patients with myelodysplastic syndromes (MDS). The mechanism underlying this drug effect remains unknown. EXPERIMENTAL DESIGN We asked whether neoplastic stem cells (NSC) in patients with MDS (n = 29) or acute myelogenous leukemia (AML; n = 62) express CD52. RESULTS As assessed by flow cytometry, CD52 was found to be expressed on NSC-enriched CD34(+)/CD38(-) cells in 8/11 patients with MDS and isolated del(5q). In most other patients with MDS, CD52 was weakly expressed or not detectable on NSC. In AML, CD34(+)/CD38(-) cells displayed CD52 in 23/62 patients, including four with complex karyotype and del(5q) and one with del(5q) and t(1;17;X). In quantitative PCR (qPCR) analyses, purified NSC obtained from del(5q) patients expressed CD52 mRNA. We were also able to show that CD52 mRNA levels correlate with EVI1 expression and that NRAS induces the expression of CD52 in AML cells. The CD52-targeting drug alemtuzumab, was found to induce complement-dependent lysis of CD34(+)/CD38(-)/CD52(+) NSC, but did not induce lysis in CD52(-) NSC. Alemtuzumab also suppressed engraftment of CD52(+) NSC in NSG mice. Finally, CD52 expression on NSC was found to correlate with a poor survival in patients with MDS and AML. CONCLUSIONS The cell surface target Campath-1 (CD52) is expressed on NSC in a group of patients with MDS and AML. CD52 is a novel prognostic NSC marker and a potential NSC target in a subset of patients with MDS and AML, which may have clinical implications and may explain clinical effects produced by alemtuzumab in these patients.
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Affiliation(s)
- Katharina Blatt
- Authors' Affiliations: Department of Internal Medicine I, Division of Hematology & Hemostaseology, Medical University of Vienna, Austria
| | - Harald Herrmann
- Ludwig Boltzmann Cluster Oncology, Medical University of Vienna, Austria
| | - Gregor Hoermann
- Department of Laboratory Medicine, Medical University of Vienna, Austria
| | - Michael Willmann
- Department for Companion Animals and Horses, Clinic for Small Animals, Clinical Unit of Internal Medicine, University of Veterinary Medicine Vienna, Austria
| | - Sabine Cerny-Reiterer
- Authors' Affiliations: Department of Internal Medicine I, Division of Hematology & Hemostaseology, Medical University of Vienna, Austria; Ludwig Boltzmann Cluster Oncology, Medical University of Vienna, Austria
| | - Irina Sadovnik
- Authors' Affiliations: Department of Internal Medicine I, Division of Hematology & Hemostaseology, Medical University of Vienna, Austria
| | - Susanne Herndlhofer
- Authors' Affiliations: Department of Internal Medicine I, Division of Hematology & Hemostaseology, Medical University of Vienna, Austria
| | - Berthold Streubel
- Department of Obstetrics and Gynecology, Medical University of Vienna, Austria
| | - Werner Rabitsch
- Department of Internal Medicine I, Bone Marrow Transplantation Unit, Medical University of Vienna, Austria
| | - Wolfgang R Sperr
- Authors' Affiliations: Department of Internal Medicine I, Division of Hematology & Hemostaseology, Medical University of Vienna, Austria; Ludwig Boltzmann Cluster Oncology, Medical University of Vienna, Austria
| | - Matthias Mayerhofer
- Ludwig Boltzmann Institute of Osteology, Hanusch-Hospital, Vienna, Austria; and
| | - Thomas Rülicke
- Institute of Laboratory Animal Science, University of Veterinary Medicine Vienna, Austria
| | - Peter Valent
- Authors' Affiliations: Department of Internal Medicine I, Division of Hematology & Hemostaseology, Medical University of Vienna, Austria; Ludwig Boltzmann Cluster Oncology, Medical University of Vienna, Austria;
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33
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Is minimal residual disease monitoring clinically relevant in adults with acute myelogenous leukemia? Curr Hematol Malig Rep 2013; 8:109-15. [PMID: 23563936 DOI: 10.1007/s11899-013-0157-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
In the past year, there has been increasing attention towards understanding the clinical relevance of minimal residual disease (MRD) assessment. The monitoring of MRD levels at various stages of therapy has considerable potential to impact the guidance of treatment for AML patients and improve outcomes. Thus, efforts have increased to address important concerns regarding MRD measurements. These concerns include: (1) what should be monitored; (2) what methodologies should be used; (3) whether such methodologies are standardized across laboratories; (4) how prognostic levels are defined; (5) when MRD should be monitored; and (6) what treatment options are available for MRD positive patients. In this review, we will discuss the methodologies available for MRD and the studies available to date aiming to address the concerns around the use of MRD measurements for AML patients.
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34
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Myeloprotection by cytidine deaminase gene transfer in antileukemic therapy. Neoplasia 2013; 15:239-48. [PMID: 23479503 DOI: 10.1593/neo.121954] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2012] [Revised: 01/03/2013] [Accepted: 01/07/2013] [Indexed: 12/22/2022] Open
Abstract
Gene transfer of drug resistance (CTX-R) genes can be used to protect the hematopoietic system from the toxicity of anticancer chemotherapy and this concept recently has been proven by overexpression of a mutant O(6)-methylguaninemethyltransferase in the hematopoietic system of glioblastoma patients treated with temozolomide. Given its protection capacity against such relevant drugs as cytosine arabinoside (ara-C), gemcitabine, decitabine, or azacytidine and the highly hematopoiesis-specific toxicity profile of several of these agents, cytidine deaminase (CDD) represents another interesting candidate CTX-R gene and our group recently has established the myeloprotective capacity of CDD gene transfer in a number of murine transplant studies. Clinically, CDD overexpression appears particularly suited to optimize treatment strategies for acute leukemias and myelodysplasias given the efficacy of ara-C (and to a lesser degree decitabine and azacytidine) in these disease entities. This article will review the current state of the art with regard to CDD gene transfer and point out potential scenarios for a clinical application of this strategy. In addition, risks and potential side effects associated with this approach as well as strategies to overcome these problems will be highlighted.
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35
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Abstract
PURPOSE OF REVIEW The objectives of this review are to discuss standard and investigational nontransplant treatment strategies for acute myeloid leukemia (AML), excluding acute promyelocytic leukemia. RECENT FINDINGS Most adults with AML die from their disease. The standard treatment paradigm for AML is remission induction chemotherapy with an anthracycline/cytarabine combination, followed by either consolidation chemotherapy or allogeneic stem cell transplantation, depending on the patient's ability to tolerate intensive treatment and the likelihood of cure with chemotherapy alone. Although this approach has changed little in the last three decades, increased understanding of the pathogenesis of AML and improvements in molecular genomic technologies are leading to novel drug targets and the development of personalized, risk-adapted treatment strategies. Recent findings related to prognostically relevant and potentially 'druggable' molecular targets are reviewed. SUMMARY At the present time, AML remains a devastating and mostly incurable disease, but the combination of optimized chemotherapeutics and molecularly targeted agents holds significant promise for the future.
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36
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Abstract
The outlook for patients with acute myeloid leukaemia has improved in the past 30 years. Unlike other cancers, much of this progress is attributable to refinement of supportive treatment, rather than the introduction of new drugs. New antibacterial and antifungal agents, antiemetics, and improved transfusion support have decreased the rate of early death, and morbidity and mortality from allogeneic stem cell transplantation has been substantially reduced. However, more than half of young adult patients and about 90% of older patients still die from their disease. Refractoriness to initial induction treatment and, more frequently, relapse after complete remission, are still the main obstacles to cure. Accordingly, new treatment approaches with mechanisms of action different from those of conventional chemotherapy are needed. Our knowledge of the various chromosomal and molecular abnormalities implicated in the pathogenesis of the many subtypes of the disease has greatly expanded; as a result, clinical research is moving towards the investigation of new non-cytotoxic agents in combination with chemotherapy. The goal is to target the molecular abnormalities identified at diagnosis; however, several aberrations can coexist in subclones of acute myeloid leukaemia, making the disease less likely to be inhibited by a single agent.
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MESH Headings
- Adult
- Age Factors
- Age of Onset
- Antineoplastic Combined Chemotherapy Protocols/administration & dosage
- Bone Marrow Transplantation/methods
- Bone Marrow Transplantation/mortality
- Combined Modality Therapy
- Disease-Free Survival
- Female
- Hematopoietic Stem Cell Transplantation/methods
- Hematopoietic Stem Cell Transplantation/mortality
- Humans
- Leukemia, Myeloid, Acute/diagnosis
- Leukemia, Myeloid, Acute/epidemiology
- Leukemia, Myeloid, Acute/therapy
- Male
- Middle Aged
- Neoplasm Recurrence, Local/mortality
- Neoplasm Recurrence, Local/therapy
- Prognosis
- Risk Assessment
- Severity of Illness Index
- Sex Factors
- Survival Analysis
- Transplantation, Autologous
- Transplantation, Homologous
- Treatment Outcome
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Affiliation(s)
- Felicetto Ferrara
- Division of Haematology and Stem Cell Transplantation Unit, Naples, Italy.
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37
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Mortazavi Y, Kaviani S, Mirzamohammadi F, Alimoghaddam K, Pourfathollah AA, Salehi O. Evaluation of X-Chromosome Inactivation Patterns in Patients with Acute Myeloid Leukemia during Remission. ISRN HEMATOLOGY 2012; 2012:971493. [PMID: 23150832 PMCID: PMC3485975 DOI: 10.5402/2012/971493] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/25/2012] [Accepted: 09/22/2012] [Indexed: 11/23/2022]
Abstract
The aim of this study was to evaluate the patterns of X-chromosome inactivation during the remission in acute myeloid leukemia (AML) at the RNA level. Two hundred normal females and 45 female patients with AML entered the study. The frequency of heterozygosity was 48.5% (119/245) for P55, 40% (93/245) for IDS, and only 28.9% (71/245) for G6PD. Some individuals were heterozygous for more than one gene polymorphism. Overall, one hundred normal individuals proved showed to be heterozygous for at least one of the above polymorphisms. 92/100 (92%) normal females showed a polyclonal pattern. Clonal patterns were observed in 44/45 (98%) AML patients at presentation. Of 27 patients who were followed after remission, 23 (85.2%) patients showed a clonal pattern. Ten patients were available for a longer followup (up to 12 months) and the clonal pattern was observed in seven patients. It can be concluded that clonality at remission is a frequent event in AML and does not necessarily mean relapse of the disease. There is also a possibility of conversion of clonality to polyclonality over time.
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Affiliation(s)
- Yousef Mortazavi
- Department of Molecular Medicine, Faculty of Medicine, Zanjan University of Medical Sciences, Zanjan 4513956111, Iran
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38
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Qian H, Xia L, Ling P, Waxman S, Jing Y. CD44 ligation with A3D8 antibody induces apoptosis in acute myeloid leukemia cells through binding to CD44s and clustering lipid rafts. Cancer Biol Ther 2012; 13:1276-83. [PMID: 22895075 DOI: 10.4161/cbt.21784] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
CD44 is a cell surface antigen expressed on acute myeloid leukemia cells and is used as a marker to isolate leukemia stem cells. CD44 ligation with the antibody A3D8 has been found to induce apoptosis in human acute promyelocytic leukemia (APL) cells via activation of caspase-8. The mechanism of A3D8-induced caspase-8 activation was studied in APL NB4 cells. A3D8 induces lipid raft clustering which causes Fas aggregation as determined with a confocal microscope. A3D8-induced apoptosis is abrogated by the lipid raft disrupting agent methyl-β-cyclodextrin and the caspase-8 inhibitor Z-IETD-fmk. Western blot analysis reveals that A3D8 binds to the standard form of CD44 (CD44s). HL-60 cells without detectable CD44s protein are not responsive to A3D8-induced apoptosis. SKNO-1 cells containing higher level of CD44s protein are more sensitive to A3D8-induced apoptosis than NB4 cells. These results indicate that A3D8 induces apoptosis in leukemia cells through caspase-8 activation by binding to CD44s protein and inducing lipid raft clustering.
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Affiliation(s)
- Hao Qian
- The Division of Hematology/Oncology, Department of Medicine, The Tisch Cancer Institute, Mount Sinai School of Medicine, New York, NY, USA
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39
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Zhai JD, Li D, Long J, Zhang HL, Lin JP, Qiu CJ, Zhang Q, Chen Y. Biomimetic Semisynthesis of Arglabin from Parthenolide. J Org Chem 2012; 77:7103-7. [DOI: 10.1021/jo300888s] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Jia-Dai Zhai
- State
Key Laboratory of Medicinal Chemical Biology, College of Pharmacy, Nankai University, Tianjin 300071, P. R. China
- Accendatech Co., Ltd., Tianjin 300384, P. R. China
| | - Dongmei Li
- State
Key Laboratory of Medicinal Chemical Biology, College of Pharmacy, Nankai University, Tianjin 300071, P. R. China
- Accendatech Co., Ltd., Tianjin 300384, P. R. China
| | - Jing Long
- State
Key Laboratory of Medicinal Chemical Biology, College of Pharmacy, Nankai University, Tianjin 300071, P. R. China
- Accendatech Co., Ltd., Tianjin 300384, P. R. China
| | - Hao-Liang Zhang
- State
Key Laboratory of Medicinal Chemical Biology, College of Pharmacy, Nankai University, Tianjin 300071, P. R. China
- Accendatech Co., Ltd., Tianjin 300384, P. R. China
| | - Jian-Ping Lin
- State
Key Laboratory of Medicinal Chemical Biology, College of Pharmacy, Nankai University, Tianjin 300071, P. R. China
- Accendatech Co., Ltd., Tianjin 300384, P. R. China
| | - Chuan-Jiang Qiu
- State
Key Laboratory of Medicinal Chemical Biology, College of Pharmacy, Nankai University, Tianjin 300071, P. R. China
- Accendatech Co., Ltd., Tianjin 300384, P. R. China
| | - Quan Zhang
- State
Key Laboratory of Medicinal Chemical Biology, College of Pharmacy, Nankai University, Tianjin 300071, P. R. China
- Accendatech Co., Ltd., Tianjin 300384, P. R. China
| | - Yue Chen
- State
Key Laboratory of Medicinal Chemical Biology, College of Pharmacy, Nankai University, Tianjin 300071, P. R. China
- Accendatech Co., Ltd., Tianjin 300384, P. R. China
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40
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Minimal residual disease as a predictive factor for relapse after allogeneic hematopoietic stem cell transplant in adult patients with acute myeloid leukemia in first and second complete remission. Cancers (Basel) 2012; 4:601-17. [PMID: 24213327 PMCID: PMC3712693 DOI: 10.3390/cancers4020601] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2012] [Revised: 06/13/2012] [Accepted: 06/14/2012] [Indexed: 11/18/2022] Open
Abstract
Allogeneic hematopoietic stem cell transplantation (allo-SCT) is potentially curative for patients with high-risk leukemia, but disease recurrence remains the leading cause of treatment failure. Our objective was to determine the impact of minimal residual disease (MRD) by any technique in adult patients with acute myeloid leukemia (AML) in morphologic first and second complete remission undergoing allo-SCT. Fifty nine patients were eligible for the study of 160 patients transplanted over ten years. For the MRD assessment we used multiparametric flow cytometry, cytogenetics and fluorescent in situ hybridization; 19 patients (32.2%) were identified as MRD positive. Patients with MRD had a consistently worse outcome over those without MRD, with 3-years leukemia-free survival (LFS) of 15.8% vs. 62.4% and overall survival (OS) of 17.5% vs. 62.3%. Relapse rate was significantly higher in MRD-positive patients; 3 years relapse rate in MRD-positive patients was 57.9% vs. 15.1% in MRD-negative patients. Detection of MRD in complete remission was associated with increased overall mortality (HR = 3.3; 95% CI: 1.45–7.57; p = 0.0044) and relapse (HR = 5.26; 95% CI: 2.0–14.0; p = 0.001), even after controlling for other risk factors. Our study showed that for patients in morphologic complete remission the presence of MRD predicts for significantly increased risk of relapse and reduced LFS and OS.
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41
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Felipe Rico J, Hassane DC, Guzman ML. Acute myelogenous leukemia stem cells: from Bench to Bedside. Cancer Lett 2012; 338:4-9. [PMID: 22713929 DOI: 10.1016/j.canlet.2012.05.034] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2012] [Revised: 05/17/2012] [Accepted: 05/30/2012] [Indexed: 01/24/2023]
Abstract
Despite reaching remission with traditional chemotherapy, most adult patients with acute myeloid leukemia (AML) will relapse and die of their disease. Numerous studies have identified a rare subset of leukemia cells that evade traditional chemotherapy and are capable of self-renewal and initiating leukemia. These cells are thought to be responsible for relapse and are termed leukemia stem cells (LSCs). This article will review the current LSC translational research and focus on new approaches to detect LSC burden and its prognostic implications, as well as the identification and development of therapeutic agents active against LSCs.
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Affiliation(s)
- J Felipe Rico
- Memorial Sloan-Kettering Cancer Center, Department of Pediatrics, 1275 York Ave., New York, NY 10065, United States.
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42
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Thomas M, Sukhai MA, Kamel-Reid S. An emerging role for retinoid X receptor α in malignant hematopoiesis. Leuk Res 2012; 36:1075-81. [PMID: 22710246 DOI: 10.1016/j.leukres.2012.05.022] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2011] [Revised: 04/13/2012] [Accepted: 05/21/2012] [Indexed: 12/29/2022]
Abstract
The retinoid X receptor alpha is the obligatory heterodimerization partner for a range of nuclear hormone receptors, and is required for signaling through the pathways mediated by those receptors. While RXR alpha has critical roles in embryonic development, it appears to be dispensable in adult hematopoiesis. Strikingly, recent evidence has indicated that proper functioning of RXR alpha is necessary for the pathogenesis of acute promyelocytic leukemia (APL), suggesting a novel avenue that can be exploited in the management and treatment of this disease. In this review we highlight recent studies that clarify the role of RXR alpha in normal and malignant hematopoiesis.
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Affiliation(s)
- Mariam Thomas
- Princess Margaret Hospital/the Ontario Cancer Institute, University Health Network, Toronto, ON, Canada
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43
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Ferrara F. New agents for acute myeloid leukemia: is it time for targeted therapies? Expert Opin Investig Drugs 2012; 21:179-89. [PMID: 22217298 DOI: 10.1517/13543784.2012.646082] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
INTRODUCTION The prognosis of acute myeloid leukemia (AML) is improved in the last two decades, even though induction and consolidation chemotherapy has not involved new drugs. The more effective use of well-known agents as well as refinement of supportive care during the inevitable phase of severe pancytopenia following intensive chemotherapy accounts for the reduction of treatment-related death rate. In addition, mortality due to allogeneic and autologous stem cell transplantation has also been reduced, due to adoption of more effective therapies for graft versus host disease and other transplant-related complications. AREAS COVERED The multitude of chromosomal and molecular abnormalities makes the treatment of AML a challenging prospect. In addition, genetic aberrations are not mutually exclusive and coexist in the leukemic cells. As a consequence, the clinical development of new biologic agents proceeds slowly. Data for this review were identified from PubMed and references from relevant articles published in English from 2000 to 2011. EXPERT OPINION In Phase II studies, different new agents have been found to be active in AML and are currently under investigation in Phase III trials also in combination with conventional chemotherapy. In the near future, we would have more information about the possibility of introducing new drugs into daily practice.
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Affiliation(s)
- Felicetto Ferrara
- Cardarelli Hospital, Division of Hematology and Stem Cell Transplantation Unit, Via Nicolò Piccinni 6, 80128 Napoli, Italy.
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44
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Altman JK, Sassano A, Platanias LC. Targeting mTOR for the treatment of AML. New agents and new directions. Oncotarget 2011; 2:510-7. [PMID: 21680954 PMCID: PMC3248202 DOI: 10.18632/oncotarget.290] [Citation(s) in RCA: 75] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Despite recent advances in the field, the treatment of patients with acute myeloid leukemia (AML) remains challenging and difficult. Although chemotherapeutic agents induce remissions in a large number of patients, many of them eventually relapse and die. A major goal for the development of new approaches for the treatment of AML is to enhance the antileukemic effects of standard chemotherapeutics and to design effective combinations targeting non-overlapping cellular pathways. The PI3K/Akt/mTOR signaling pathway plays a critical role in survival and growth of malignant cells and its targeting has been the focus of extensive work and research efforts over the last two decades. It now appears possible that a major limitation of the first generation of mTOR inhibitors can be overcome by a new class of catalytic inhibitors of mTOR. There is emerging evidence that such compounds target both TORC1 and TORC2 and elicit much more potent responses against early leukemic precursors in vitro. In addition, recent studies have shown that combinations of such agents with cytarabine result in enhanced antileukemic responses in vitro, raising the prospect and potential of use of these agents in combination regimens for the treatment of AML.
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Affiliation(s)
- Jessica K Altman
- Robert H. Lurie Comprehensive Cancer Center, Northwestern University Medical School, Chicago, IL, USA
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45
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Buss EC, Ho AD. Leukemia stem cells. Int J Cancer 2011; 129:2328-36. [PMID: 21796620 DOI: 10.1002/ijc.26318] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2011] [Accepted: 07/12/2011] [Indexed: 12/18/2022]
Abstract
Leukemia stem cells (LSCs) might originate from malignant transformation of normal hematopoietic stem cells (HSCs), or alternatively, of progenitors in which the acquired mutations have re-installed a dysregulated self-renewal program. LSCs are on top of a hierarchy and generate leukemia cells with more differentiated characteristics. While most leukemia cells are initially sensitive to chemo- and radiotherapy, LSCs are resistant and are considered to be the basis for disease relapse after initial response. Albeit important knowledge on LSC biology has been gained from xenogeneic transplantation models introducing human leukemia cells into immune deficient mouse models, the prospective identification and isolation of human LSC candidates has remained elusive and their prognostic and therapeutic significance controversial. This review focuses on the identification, enrichment and characterization of human LSC derived from patients with acute myeloid leukemia (AML). Experimental data demonstrating the clinical significance of estimating LSC burden and strategies to eliminate LSC will be summarized. For long-term cure of AML, it is of importance to define LSC candidates and to understand their tumor biology compared to normal HSCs. Such comparative studies might provide novel markers for the identification of LSC and for the development of treatment strategies that might be able to eradicate them.
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Affiliation(s)
- Eike C Buss
- Department of Internal Medicine V, Heidelberg University Medical Center, Im Neuenheimer Feld 410, Heidelberg, Germany
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Barth BM, I Altinoğlu E, Shanmugavelandy SS, Kaiser JM, Crespo-Gonzalez D, DiVittore NA, McGovern C, Goff TM, Keasey NR, Adair JH, Loughran TP, Claxton DF, Kester M. Targeted indocyanine-green-loaded calcium phosphosilicate nanoparticles for in vivo photodynamic therapy of leukemia. ACS NANO 2011; 5:5325-5337. [PMID: 21675727 DOI: 10.1021/nn2005766] [Citation(s) in RCA: 134] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Leukemia is one of the most common and aggressive adult cancers, as well as the most prevalent childhood cancer. Leukemia is a cancer of the hematological system and can be divided into a diversity of unique malignancies based on the onset of the disease as well as the specific cell lineages involved. Cancer stem cells, including recently identified leukemia stem cells (LSCs), are hypothesized to be responsible for cancer development, relapse, and resistance to treatment, and new therapeutics targeting these cellular populations are urgently needed. Nontoxic and nonaggregating calcium phosphosilicate nanoparticles (CPSNPs) encapsulating the near-infrared fluoroprobe indocyanine green (ICG) were recently developed for diagnostic imaging and drug delivery as well as for photodynamic therapy (PDT) of solid tumors. Prior studies revealed that specific targeting of CPSNPs allowed for enhanced accumulation within breast cancer tumors, via CD71 targeting, or pancreatic cancer tumors, via gastrin receptor targeting. In the present study, ICG-loaded CPSNPs were evaluated as photosensitizers for PDT of leukemia. Using a novel bioconjugation approach to specifically target CD117 or CD96, surface features enhanced on leukemia stem cells, in vitro ICG-CPSNP PDT of a murine leukemia cell line and human leukemia samples were dramatically improved. Furthermore, the in vivo efficacy of PDT was dramatically enhanced in a murine leukemia model by utilizing CD117-targeted ICG-CPSNPs, resulting in 29% disease-free survival. Altogether, this study demonstrates that leukemia-targeted ICG-loaded CPSNPs offer the promise to effectively treat relapsing and multidrug-resistant leukemia and to improve the life of leukemia patients.
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Affiliation(s)
- Brian M Barth
- Department of Pharmacology, Pennsylvania State University College of Medicine, Hershey, Pennsylvania 17033, USA.
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Roboz GJ. Novel approaches to the treatment of acute myeloid leukemia. HEMATOLOGY. AMERICAN SOCIETY OF HEMATOLOGY. EDUCATION PROGRAM 2011; 2011:43-50. [PMID: 22160011 DOI: 10.1182/asheducation-2011.1.43] [Citation(s) in RCA: 68] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Approximately 12 000 adults are diagnosed with acute myeloid leukemia (AML) in the United States annually, the majority of whom die from their disease. The mainstay of initial treatment, cytosine arabinoside (ara-C) combined with an anthracycline, was developed nearly 40 years ago and remains the worldwide standard of care. Advances in genomics technologies have identified AML as a genetically heterogeneous disease, and many patients can now be categorized into clinicopathologic subgroups on the basis of their underlying molecular genetic defects. It is hoped that enhanced specificity of diagnostic classification will result in more effective application of targeted agents and the ability to create individualized treatment strategies. This review describes the current treatment standards for induction, consolidation, and stem cell transplantation; special considerations in the management of older AML patients; novel agents; emerging data on the detection and management of minimal residual disease (MRD); and strategies to improve the design and implementation of AML clinical trials.
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Affiliation(s)
- Gail J Roboz
- Weill Medical College of Cornell University, New York, NY 10021, USA.
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