1
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Liu C, Liu L. Identification and immunoassay of prognostic genes associated with the complement system in acute myeloid leukemia. J Formos Med Assoc 2024; 123:904-915. [PMID: 38341328 DOI: 10.1016/j.jfma.2024.01.024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2023] [Revised: 01/12/2024] [Accepted: 01/23/2024] [Indexed: 02/12/2024] Open
Abstract
Studies have associated the development of pulmonary leukemia with the activation of the complement system. However, the roles and mechanisms of complement system-related genes (CSRGs) in acute myeloid leukemia (AML) have not been investigated extensively. This study used The Cancer Genome Atlas (TCGA)-AML and GSE37642 datasets. Differentially expressed CSRGs (CSRDEGs) were identified by overlapping genes differentially expressed between the high and low CSRG score groups and key module genes identified in a weighted gene co-expression network analysis. Univariate and multivariate Cox analyses identified CSRG-related biomarkers, which were used to build a prognostic model. After gene set enrichment analysis (GSEA), immune-related and drug-sensitivity analyses were performed in the high- and low-risk groups. Four prognosis-related biomarkers were identified and used to develop a prognostic model: MEOX2, IGFBP5, CH25H, and RAB3B. The model's performance was verified in a test cohort (a subset of samples from the TCGA-AML dataset) and a validation cohort (GSE37642). The GSEA revealed that the high-risk group was mainly enriched for Golgi organization and cytokine-cytokine receptor interactions, and the low-risk group was mainly enriched in the hedgehog signaling pathway and spliceosome. Lastly, two immune cells were found to show differential infiltration between risk groups, which correlated with the risk scores. M1 macrophage infiltration was significantly positively correlated with RAB3B expression. Sensitivity to 36 drugs differed significantly between risk groups. This study screened four CSRG-related biomarkers (MEOX2, IGFBP5, CH25H, and RAB3B) to provide a basis for predicting AML prognosis.
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Affiliation(s)
- Chen Liu
- Department of Hematology, First Affiliated Hospital of Chongqing Medical University, ChongQing, 400016, China.
| | - Lin Liu
- Department of Hematology, First Affiliated Hospital of Chongqing Medical University, ChongQing, 400016, China.
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2
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Pervushin NV, Kopeina GS, Zhivotovsky B. Bcl-B: an "unknown" protein of the Bcl-2 family. Biol Direct 2023; 18:69. [PMID: 37899453 PMCID: PMC10614328 DOI: 10.1186/s13062-023-00431-4] [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: 10/19/2023] [Accepted: 10/23/2023] [Indexed: 10/31/2023] Open
Abstract
Bcl-B is a poorly understood protein of the Bcl-2 family that is highly expressed in many healthy tissues and tumor types. Bcl-B is considered an antiapoptotic protein, but many reports have revealed its contradictory roles in different cancer types. In this mini-review, we elucidate the functions of Bcl-B in normal conditions and various pathologies, its regulation of programmed cell death, its oncogene/oncosuppressor activity in tumorigenesis, its impact on drug-acquired resistance, and possible approaches to inhibit Bcl-B.
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Affiliation(s)
- N V Pervushin
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow, 119991, Russia
- Faculty of Medicine, MV Lomonosov Moscow State University, Moscow, 119991, Russia
| | - G S Kopeina
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow, 119991, Russia.
- Faculty of Medicine, MV Lomonosov Moscow State University, Moscow, 119991, Russia.
| | - B Zhivotovsky
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow, 119991, Russia.
- Faculty of Medicine, MV Lomonosov Moscow State University, Moscow, 119991, Russia.
- Division of Toxicology, Institute of Environmental Medicine, Karolinska Institute, Box 210, Stockholm, 17177, Sweden.
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3
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Stölzel F, Fordham SE, Nandana D, Lin WY, Blair H, Elstob C, Bell HL, Mohr B, Ruhnke L, Kunadt D, Dill C, Allsop D, Piddock R, Soura EN, Park C, Fadly M, Rahman T, Alharbi A, Wobus M, Altmann H, Röllig C, Wagenführ L, Jones GL, Menne T, Jackson GH, Marr HJ, Fitzgibbon J, Onel K, Meggendorfer M, Robinson A, Bziuk Z, Bowes E, Heidenreich O, Haferlach T, Villar S, Ariceta B, Diaz RA, Altschuler SJ, Wu LF, Prosper F, Montesinos P, Martinez-Lopez J, Bornhäuser M, Allan JM. Biallelic TET2 mutations confer sensitivity to 5'-azacitidine in acute myeloid leukemia. JCI Insight 2023; 8:e150368. [PMID: 36480300 PMCID: PMC9977313 DOI: 10.1172/jci.insight.150368] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Accepted: 11/30/2022] [Indexed: 12/13/2022] Open
Abstract
Precision medicine can significantly improve outcomes for patients with cancer, but implementation requires comprehensive characterization of tumor cells to identify therapeutically exploitable vulnerabilities. Here, we describe somatic biallelic TET2 mutations in an elderly patient with acute myeloid leukemia (AML) that was chemoresistant to anthracycline and cytarabine but acutely sensitive to 5'-azacitidine (5'-Aza) hypomethylating monotherapy, resulting in long-term morphological remission. Given the role of TET2 as a regulator of genomic methylation, we hypothesized that mutant TET2 allele dosage affects response to 5'-Aza. Using an isogenic cell model system and an orthotopic mouse xenograft, we demonstrate that biallelic TET2 mutations confer sensitivity to 5'-Aza compared with cells with monoallelic mutations. Our data argue in favor of using hypomethylating agents for chemoresistant disease or as first-line therapy in patients with biallelic TET2-mutated AML and demonstrate the importance of considering mutant allele dosage in the implementation of precision medicine for patients with cancer.
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Affiliation(s)
- Friedrich Stölzel
- Medical Clinic and Polyclinic I, University Hospital Dresden, Technical University of Dresden, Dresden, Germany
| | - Sarah E. Fordham
- Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Devi Nandana
- Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Wei-Yu Lin
- Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Helen Blair
- Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Claire Elstob
- Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Hayden L. Bell
- Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Brigitte Mohr
- Medical Clinic and Polyclinic I, University Hospital Dresden, Technical University of Dresden, Dresden, Germany
| | - Leo Ruhnke
- Medical Clinic and Polyclinic I, University Hospital Dresden, Technical University of Dresden, Dresden, Germany
| | - Desiree Kunadt
- Medical Clinic and Polyclinic I, University Hospital Dresden, Technical University of Dresden, Dresden, Germany
| | - Claudia Dill
- Medical Clinic and Polyclinic I, University Hospital Dresden, Technical University of Dresden, Dresden, Germany
| | - Daniel Allsop
- Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Rachel Piddock
- Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Emmanouela-Niki Soura
- Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Catherine Park
- Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Mohd Fadly
- Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Thahira Rahman
- Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Abrar Alharbi
- Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Manja Wobus
- Medical Clinic and Polyclinic I, University Hospital Dresden, Technical University of Dresden, Dresden, Germany
| | - Heidi Altmann
- Medical Clinic and Polyclinic I, University Hospital Dresden, Technical University of Dresden, Dresden, Germany
| | - Christoph Röllig
- Medical Clinic and Polyclinic I, University Hospital Dresden, Technical University of Dresden, Dresden, Germany
| | - Lisa Wagenführ
- Medical Clinic and Polyclinic I, University Hospital Dresden, Technical University of Dresden, Dresden, Germany
| | - Gail L. Jones
- Department of Hematology, Freeman Hospital, Newcastle upon Tyne, United Kingdom
| | - Tobias Menne
- Department of Hematology, Freeman Hospital, Newcastle upon Tyne, United Kingdom
| | - Graham H. Jackson
- Department of Hematology, Freeman Hospital, Newcastle upon Tyne, United Kingdom
| | - Helen J. Marr
- Department of Hematology, Freeman Hospital, Newcastle upon Tyne, United Kingdom
| | - Jude Fitzgibbon
- Barts Cancer Institute, Queen Mary University of London, London, United Kingdom
| | - Kenan Onel
- Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | | | - Amber Robinson
- Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Zuzanna Bziuk
- Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Emily Bowes
- Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Olaf Heidenreich
- Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, United Kingdom
| | | | - Sara Villar
- Department of Hematology, Clínica Universidad de Navarra, Instituto de Investigación Sanitaria de Navarra (IdiSNA), Pamplona, Spain
| | - Beñat Ariceta
- Hematological Diseases Laboratory, CIMA LAB Diagnostics, University of Navarra, Navarra, Spain
- IdiSNA, Navarra, Spain
| | - Rosa Ayala Diaz
- Hematology Department, Hospital 12 de Octubre (i+12), Centro Nacional de Investigaciones Oncológicas (CNIO), Complutense University, Madrid, Spain
| | - Steven J. Altschuler
- Department of Pharmaceutical Chemistry, School of Pharmacy, University of California, San Francisco, San Francisco, California, USA
| | - Lani F. Wu
- Department of Pharmaceutical Chemistry, School of Pharmacy, University of California, San Francisco, San Francisco, California, USA
| | - Felipe Prosper
- Department of Hematology, Clínica Universidad de Navarra, Instituto de Investigación Sanitaria de Navarra (IdiSNA), Pamplona, Spain
| | - Pau Montesinos
- Hospital Universitario y Politécnico La Fe, Valencia, Spain
| | - Joaquin Martinez-Lopez
- Hematology Department, Hospital 12 de Octubre (i+12), Centro Nacional de Investigaciones Oncológicas (CNIO), Complutense University, Madrid, Spain
| | - Martin Bornhäuser
- Medical Clinic and Polyclinic I, University Hospital Dresden, Technical University of Dresden, Dresden, Germany
- National Center for Tumor Diseases, Dresden, Germany
| | - James M. Allan
- Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, United Kingdom
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4
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Bagherian A, Roudi B, Masoudian N, Mirzaei H. Anti-glioblastoma effects of nanomicelle-curcumin plus erlotinib. Food Funct 2021; 12:10926-10937. [PMID: 34647945 DOI: 10.1039/d1fo01611c] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Glioblastoma (GBM), one of the most significant brain neoplasms, is characterized by high metastasis and recurrence. Crossing the blood-brain barrier is one of the main therapeutic obstacles, seriously hampering therapeutic agents entering the brain. This research investigated the co-delivery of erlotinib and curcumin via nanomicelles for enhancing anti-GBM treatment in vitro. For this purpose, curcumin and nanomicelle-curcumin (50 μM) were investigated alone and also with erlotinib (50 μM) in U87 glioblastoma cells. The cell viability of U87 cells after exposure to curcumin/nanomicelle curcumin/erlotinib and their combinations was measured by CCK-8 assay. The expression of the Wnt signaling-related genes was measured by qRT-PCR assay. The altered expression of NF-kB and proteins associated with angiogenesis, apoptosis, and autophagy were investigated by western blot assay. Compared with the control, all treatments reduced the viability of U87 glioblastoma cells. Furthermore, the level of proteins related to angiogenesis and Wnt pathway-associated genes in the nanomicelle-curcumin + erlotinib group were significantly decreased compared to the curcumin, erlotinib, and control groups. Each treatment regulated autophagy and apoptosis-associated proteins. Total phospho-NF-κB (p65) and total NF-κB (p65) declined in each treatment at the protein levels. Overall, nanomicelle-curcumin alone or combined with erlotinib showed anti-GBM activity in the U87 cell line by regulating the signaling pathways in GBM pathogenesis and thus may be a promising nanodrug candidate for application in the field of GBM therapy.
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Affiliation(s)
- Ali Bagherian
- Department of Biology, Faculty of Science, Islamic Azad University, Damghan Branch, Damghan, Iran.
| | - Bostan Roudi
- Department of Biology, Faculty of Science, Islamic Azad University, Damghan Branch, Damghan, Iran.
| | - Nahid Masoudian
- Department of Biology, Faculty of Science, Islamic Azad University, Damghan Branch, Damghan, Iran.
| | - Hamed Mirzaei
- Research Center for Biochemistry and Nutrition in Metabolic Diseases, Institute for Basic Sciences, Kashan University of Medical Sciences, Kashan, Iran.,Student Research Committee, Kashan University of Medical Sciences, Kashan, Iran.
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5
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Xiao H, Zheng Y, Ma L, Tian L, Sun Q. Clinically-Relevant ABC Transporter for Anti-Cancer Drug Resistance. Front Pharmacol 2021; 12:648407. [PMID: 33953682 PMCID: PMC8089384 DOI: 10.3389/fphar.2021.648407] [Citation(s) in RCA: 113] [Impact Index Per Article: 37.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Accepted: 03/16/2021] [Indexed: 02/04/2023] Open
Abstract
Multiple drug resistance (MDR), referring to the resistance of cancer cells to a broad spectrum of structurally and mechanistically unrelated drugs across membranes, severely impairs the response to chemotherapy and leads to chemotherapy failure. Overexpression of ATP binding cassette (ABC) transporters is a major contributing factor resulting in MDR, which can recognize and mediate the efflux of diverse drugs from cancer cells, thereby decreasing intracellular drug concentration. Therefore, modulators of ABC transporter could be used in combination with standard chemotherapeutic anticancer drugs to augment the therapeutic efficacy. This review summarizes the recent advances of important cancer-related ABC transporters, focusing on their physiological functions, structures, and the development of new compounds as ABC transporter inhibitors.
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Affiliation(s)
- Huan Xiao
- State Key Laboratory of Biotherapy, Cancer Center, West China Hospital, Sichuan University and Collaborative Innovation Center for Biotherapy, Chengdu, China
| | - Yongcheng Zheng
- State Key Laboratory of Biotherapy, Cancer Center, West China Hospital, Sichuan University and Collaborative Innovation Center for Biotherapy, Chengdu, China
| | - Lingling Ma
- State Key Laboratory of Biotherapy, Cancer Center, West China Hospital, Sichuan University and Collaborative Innovation Center for Biotherapy, Chengdu, China
| | - Lili Tian
- Department of Anesthesiology, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, China
| | - Qiu Sun
- State Key Laboratory of Biotherapy, Cancer Center, West China Hospital, Sichuan University and Collaborative Innovation Center for Biotherapy, Chengdu, China
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6
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Rodrigues ACBDC, Costa RGA, Silva SLR, Dias IRSB, Dias RB, Bezerra DP. Cell signaling pathways as molecular targets to eliminate AML stem cells. Crit Rev Oncol Hematol 2021; 160:103277. [PMID: 33716201 DOI: 10.1016/j.critrevonc.2021.103277] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 01/25/2021] [Accepted: 02/27/2021] [Indexed: 02/08/2023] Open
Abstract
Acute myeloid leukemia (AML) remains the most lethal of leukemias and a small population of cells called leukemic stem cells (LSCs) has been associated with disease relapses. Some cell signaling pathways play an important role in AML survival, proliferation and self-renewal properties and are abnormally activated or suppressed in LSCs. This includes the NF-κB, Wnt/β-catenin, Hedgehog, Notch, EGFR, JAK/STAT, PI3K/AKT/mTOR, TGF/SMAD and PPAR pathways. This review aimed to discuss these pathways as molecular targets for eliminating AML LSCs. Herein, inhibitors/activators of these pathways were summarized as a potential new anti-AML therapy capable of eliminating LSCs to guide future researches. The clinical use of cell signaling pathways data can be useful to enhance the anti-AML therapy.
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Affiliation(s)
| | - Rafaela G A Costa
- Gonçalo Moniz Institute, Oswaldo Cruz Foundation (IGM-FIOCRUZ/BA), Salvador, Bahia, 40296-710, Brazil
| | - Suellen L R Silva
- Gonçalo Moniz Institute, Oswaldo Cruz Foundation (IGM-FIOCRUZ/BA), Salvador, Bahia, 40296-710, Brazil
| | - Ingrid R S B Dias
- Gonçalo Moniz Institute, Oswaldo Cruz Foundation (IGM-FIOCRUZ/BA), Salvador, Bahia, 40296-710, Brazil
| | - Rosane B Dias
- Gonçalo Moniz Institute, Oswaldo Cruz Foundation (IGM-FIOCRUZ/BA), Salvador, Bahia, 40296-710, Brazil
| | - Daniel P Bezerra
- Gonçalo Moniz Institute, Oswaldo Cruz Foundation (IGM-FIOCRUZ/BA), Salvador, Bahia, 40296-710, Brazil.
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7
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Kam AYF, Piryani SO, Lee CL, Rizzieri DA, Spector NL, Sarantopoulos S, Doan PL. Selective ERBB2 and BCL2 Inhibition Is Synergistic for Mitochondrial-Mediated Apoptosis in MDS and AML Cells. Mol Cancer Res 2021; 19:886-899. [PMID: 33514658 DOI: 10.1158/1541-7786.mcr-20-0973] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2020] [Revised: 12/23/2020] [Accepted: 01/21/2021] [Indexed: 11/16/2022]
Abstract
The ERBB2 proto-oncogene is associated with an aggressive phenotype in breast cancer. Its role in hematologic malignancies is incompletely defined, in part because ERBB2 is not readily detected on the surface of cancer cells. We demonstrate that truncated ERBB2, which lacks the extracellular domain, is overexpressed on primary CD34+ myelodysplastic syndrome (MDS) and acute myeloid leukemia (AML) cells compared with healthy hematopoietic cells. This overexpression of ERBB2 is associated with aberrant, oncogenic signaling with autophosphorylation of multiple tyrosine sites. Like in breast cancers, ERBB2 can exist as truncated isoforms p95ERBB2 and p110ERBB2 in MDS and AML. Neutralization of ERBB2 signaling with ERBB2 tyrosine kinase inhibitors (i.e., lapatinib, afatinib, and neratinib) increases apoptotic cell death and reduces human engraftment of MDS cells in mice at 21 weeks posttransplantation. Inhibition of ERBB2 modulates the expression of multiple pro- and anti-apoptotic mitochondrial proteins, including B-cell lymphoma 2 (BCL2). Dual blockade with ERBB2 and BCL2 inhibitors triggers additional reductions of BCL2 phosphorylation and myeloid cell leukemia-1 (MCL1) expression compared with single drug treatment. Dual therapy was synergistic at all tested doses, with a dose reduction index of up to 29 for lapatinib + venetoclax compared with venetoclax alone. Notably, these agents operated together and shifted cancer cells to a pro-apoptotic phenotype, resulting in increased mitochondrial cytochrome c release and activated caspase-3-mediated cell death. IMPLICATIONS: These findings warrant study of ERBB2 and BCL2 combination therapy in patients with MDS and AML. VISUAL OVERVIEW: http://mcr.aacrjournals.org/content/molcanres/19/5/886/F1.large.jpg.
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Affiliation(s)
- Angel Y F Kam
- Division of Hematologic Malignancies and Cellular Therapy, Department of Medicine, Duke University, Durham, North Carolina
| | - Sadhna O Piryani
- Division of Hematologic Malignancies and Cellular Therapy, Department of Medicine, Duke University, Durham, North Carolina
| | - Chang-Lung Lee
- Department of Radiation Oncology, Duke University Medical Center, Durham, North Carolina.,Department of Pathology, Duke University Medical Center, Durham, North Carolina.,Duke Cancer Institute, Duke University, Durham, North Carolina
| | - David A Rizzieri
- Division of Hematologic Malignancies and Cellular Therapy, Department of Medicine, Duke University, Durham, North Carolina.,Duke Cancer Institute, Duke University, Durham, North Carolina
| | - Neil L Spector
- Duke Cancer Institute, Duke University, Durham, North Carolina.,Division of Medical Oncology, Department of Medicine, Duke University, Durham, North Carolina
| | - Stefanie Sarantopoulos
- Division of Hematologic Malignancies and Cellular Therapy, Department of Medicine, Duke University, Durham, North Carolina.,Duke Cancer Institute, Duke University, Durham, North Carolina
| | - Phuong L Doan
- Division of Hematologic Malignancies and Cellular Therapy, Department of Medicine, Duke University, Durham, North Carolina. .,Duke Cancer Institute, Duke University, Durham, North Carolina
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8
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Maslah N, Salomao N, Drevon L, Verger E, Partouche N, Ly P, Aubin P, Naoui N, Schlageter MH, Bally C, Miekoutima E, Rahmé R, Lehmann-Che J, Ades L, Fenaux P, Cassinat B, Giraudier S. Synergistic effects of PRIMA-1 Met (APR-246) and 5-azacitidine in TP53-mutated myelodysplastic syndromes and acute myeloid leukemia. Haematologica 2019; 105:1539-1551. [PMID: 31488557 PMCID: PMC7271596 DOI: 10.3324/haematol.2019.218453] [Citation(s) in RCA: 98] [Impact Index Per Article: 19.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2019] [Accepted: 09/04/2019] [Indexed: 12/16/2022] Open
Abstract
Myelodysplastic syndromes and acute myeloid leukemia with TP53 mutations are characterized by frequent relapses, poor or short responses, and poor survival with the currently available therapies including chemotherapy and 5-azacitidine (AZA). PRIMA-1Met(APR-246,APR) is a methylated derivative of PRIMA-1, which induces apoptosis in human tumor cells through restoration of the transcriptional transactivation function of mutant p53. Here we show that low doses of APR on its own or in combination with AZA reactivate the p53 pathway and induce an apoptosis program. Functionally, we demonstrate that APR exerts these activities on its own and that it synergizes with AZA in TP53-mutated myelodysplastic syndromes (MDS)/acute myeloid leukemia (AML) cell lines and in TP53-mutated primary cells from MDS/AML patients. Low doses of APR on its own or in combination with AZA also show significant efficacy in vivo Lastly, using transcriptomic analysis, we found that the APR + AZA synergy was mediated by downregulation of the FLT3 pathway in drug-treated cells. Activation of the FLT3 pathway by FLT3 ligand reversed the inhibition of cell proliferation by APR + AZA. These data suggest that TP53-mutated MDS/AML may be better targeted by the addition of APR-246 to conventional treatments.
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Affiliation(s)
- Nabih Maslah
- APHP, Service de Biologie Cellulaire, Hôpital Saint-Louis, Paris.,Faculté de Médecine Université Paris Diderot Paris 7, Paris.,INSERM UMR-S 1131, Hôpital Saint-Louis, Paris
| | | | | | - Emmanuelle Verger
- APHP, Service de Biologie Cellulaire, Hôpital Saint-Louis, Paris.,INSERM UMR-S 1131, Hôpital Saint-Louis, Paris
| | - Nicolas Partouche
- Faculté de Médecine Paris 12-UPEC, Hôpital Henri Mondor, APHP, Créteil
| | - Pierre Ly
- APHP, Service de Biologie Cellulaire, Hôpital Saint-Louis, Paris
| | - Philippe Aubin
- APHP, Service de Biologie Cellulaire, Hôpital Saint-Louis, Paris
| | - Nadia Naoui
- APHP, Service de Biologie Cellulaire, Hôpital Saint-Louis, Paris
| | - Marie-Helene Schlageter
- APHP, Service de Biologie Cellulaire, Hôpital Saint-Louis, Paris.,INSERM UMR-S 1131, Hôpital Saint-Louis, Paris
| | - Cecile Bally
- APHP, Service d'Hématologie Senior, Hôpital Saint-Louis, Paris
| | - Elsa Miekoutima
- APHP, Service d'Hématologie Senior, Hôpital Saint-Louis, Paris
| | - Ramy Rahmé
- APHP, Service d'Hématologie Senior, Hôpital Saint-Louis, Paris
| | - Jacqueline Lehmann-Che
- Faculté de Médecine Université Paris Diderot Paris 7, Paris.,Unité d'Oncologie Moléculaire, Hôpital Saint-Louis, APHP, Paris, France
| | - Lionel Ades
- Faculté de Médecine Université Paris Diderot Paris 7, Paris.,INSERM UMR-S 1131, Hôpital Saint-Louis, Paris.,APHP, Service d'Hématologie Senior, Hôpital Saint-Louis, Paris
| | - Pierre Fenaux
- Faculté de Médecine Université Paris Diderot Paris 7, Paris.,INSERM UMR-S 1131, Hôpital Saint-Louis, Paris.,APHP, Service d'Hématologie Senior, Hôpital Saint-Louis, Paris
| | - Bruno Cassinat
- APHP, Service de Biologie Cellulaire, Hôpital Saint-Louis, Paris.,INSERM UMR-S 1131, Hôpital Saint-Louis, Paris
| | - Stephane Giraudier
- Faculté de Médecine Université Paris Diderot Paris 7, Paris .,INSERM UMR-S 1131, Hôpital Saint-Louis, Paris
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9
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Liu H, Hu Y, Rimoldi R, Von Hagt C, Khong EWC, Lee N, Flemming S, Spencer A, Dear AE. Epigenetic treatment-mediated modulation of PD-L1 predicts potential therapy resistance over response markers in myeloid malignancies: A molecular mechanism involving effectors of PD-L1 reverse signaling. Oncol Lett 2018; 17:2543-2550. [PMID: 30675316 DOI: 10.3892/ol.2018.9841] [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: 07/06/2018] [Accepted: 11/15/2018] [Indexed: 12/28/2022] Open
Abstract
Recent evidence suggests an association exists between resistance to epigenetic therapy (EGT) and the expression of programmed cell death protein 1 (PD-1) and programmed death-ligand 1 (PD-L1) in myeloid malignancies. Biomarkers are required to predict resistance to EGT in myeloid malignancies, which together with the delineation of associated molecular mechanisms, may provide additional understanding for novel treatment strategies when investigating resistance to EGT. The present study aimed to investigate the in vivo effects of EGT on the expression of PD-1, PD-L1 and orphan nuclear receptor NUR77 with clinical responses in patients with myeloid malignancies. In addition, in vitro and in vivo characterization of the effects of EGT on the expression of NF-κB and Bcl-xL, potential downstream targets of PD-L1 reverse signaling, were evaluated to determine components of the molecular mechanism responsible for these effects. The in vivo effects of EGT on the expression of PD-1, PD-L1 and a previously identified molecular marker of response to EGT, NUR77 was characterized in peripheral blood mononuclear cells (PBMC) from patients with myelodysplastic syndrome (MDS) and acute myeloid leukemia (AML) treated with either azacytidine (Aza) alone or a combination of Aza and the histone deacetylase inhibitor (HDACi) LBH-589 during the first cycle of therapy. The correlation of clinical responses to treatment with EGT with the expression of PD-1, PD-L1 and NUR77 demonstrated that the induction of PD-L1 mRNA levels was associated with resistance to EGT despite the concurrent augmentation of NUR77 expression. The characterization of potential downstream effector molecules of reverse PD-L1 signaling identified EGT-mediated induction of Bcl-xL and NF-κB mRNA expression in vitro and in vivo, suggesting a potential anti-apoptotic molecular mechanism was responsible for PD-L1-mediated resistance to EGT. Taken together, these observations suggest that enhanced PD-L1 expression may confer resistance to EGT over known EGT response markers in myeloid malignancies, and provides a potential molecular mechanism involving the modulation of effectors of PD-L1 reverse signaling, which may in-part, be responsible for these effects.
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Affiliation(s)
- Hongbin Liu
- Department of Medicine, Eastern Health Clinical School, Monash University, Melbourne, Victoria 3128, Australia
| | - Yunshan Hu
- Department of Medicine, Eastern Health Clinical School, Monash University, Melbourne, Victoria 3128, Australia
| | - Rafael Rimoldi
- Department of Medicine, Eastern Health Clinical School, Monash University, Melbourne, Victoria 3128, Australia
| | - Chloe Von Hagt
- Department of Medicine, Eastern Health Clinical School, Monash University, Melbourne, Victoria 3128, Australia
| | - Edmund W C Khong
- Department of Medicine, Eastern Health Clinical School, Monash University, Melbourne, Victoria 3128, Australia
| | - Nora Lee
- Department of Haematology, Eastern Health Clinical School, Box Hill Hospital, Melbourne, Victoria 3128, Australia
| | - Shaun Flemming
- Australian Centre for Blood Diseases, Monash University, Melbourne, Victoria 3004, Australia.,Department of Haematology, Alfred Hospital, Melbourne, Victoria 3004, Australia
| | - Andrew Spencer
- Australian Centre for Blood Diseases, Monash University, Melbourne, Victoria 3004, Australia.,Department of Haematology, Alfred Hospital, Melbourne, Victoria 3004, Australia
| | - Anthony E Dear
- Department of Medicine, Eastern Health Clinical School, Monash University, Melbourne, Victoria 3128, Australia.,Australian Centre for Blood Diseases, Monash University, Melbourne, Victoria 3004, Australia
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10
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Smith M, García-Martínez E, Pitter MR, Fucikova J, Spisek R, Zitvogel L, Kroemer G, Galluzzi L. Trial Watch: Toll-like receptor agonists in cancer immunotherapy. Oncoimmunology 2018; 7:e1526250. [PMID: 30524908 DOI: 10.1080/2162402x.2018.1526250] [Citation(s) in RCA: 165] [Impact Index Per Article: 27.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2018] [Indexed: 12/14/2022] Open
Abstract
Toll-like receptor (TLR) agonists demonstrate therapeutic promise as immunological adjuvants for anticancer immunotherapy. To date, three TLR agonists have been approved by US regulatory agencies for use in cancer patients. Additionally, the potential of hitherto experimental TLR ligands to mediate clinically useful immunostimulatory effects has been extensively investigated over the past few years. Here, we summarize recent preclinical and clinical advances in the development of TLR agonists for cancer therapy.
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Affiliation(s)
- Melody Smith
- Department of Medicine and Immunology Program, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Elena García-Martínez
- Hematology and Oncology Department, Hospital Universitario Morales Meseguer, Murcia, Spain
| | - Michael R Pitter
- Department of Medicine and Immunology Program, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Jitka Fucikova
- Sotio a.c., Prague, Czech Republic.,Department of Immunology, 2nd Faculty of Medicine, University Hospital Motol, Charles University, Prague, Czech Republic
| | - Radek Spisek
- Sotio a.c., Prague, Czech Republic.,Department of Immunology, 2nd Faculty of Medicine, University Hospital Motol, Charles University, Prague, Czech Republic
| | - Laurence Zitvogel
- INSERM, U1015, Villejuif, France.,Gustave Roussy Comprehensive Cancer Institute, Villejuif, France.,Center of Clinical Investigations in Biotherapies of Cancer (CICBT) 1428, Villejuif, France.,Université Paris Sud/Paris XI, Le Kremlin-Bicêtre, France
| | - Guido Kroemer
- Université Paris Descartes/ Paris V, Paris, France.,Université Pierre et Marie Curie/Paris VI, Paris, France.,INSERM, U1138, Paris, France.,Equipe 11 labellisée Ligue contre le Cancer, Centre de Recherche des Cordeliers, Paris, France.,Metabolomics and Cell Biology Platforms, Gustave Roussy Comprehensive Cancer Institute, Villejuif, France.,Karolinska Institute, Department of Women's and Children's Health, Karolinska University Hospital, Stockholm, Sweden.,Pôle de Biologie, Hopitâl Européen George Pompidou, AP-HP; Paris, France
| | - Lorenzo Galluzzi
- Université Paris Descartes/ Paris V, Paris, France.,Department of Radiation Oncology, Weill Cornell Medical College, New York, NY, USA.,Sandra and Edward Meyer Cancer Center, New York, NY, USA
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11
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Abstract
Targeting DNA hypermethylation, using nucleoside analogs, is an efficient approach to reprogram cancer cell epigenome leading to reduced proliferation, increased differentiation, recognition by the immune system, and ultimately cancer cell death. DNA methyltransferase inhibitors have been approved for the treatment of myelodysplastic syndromes, chronic myelomonocytic leukemia, and acute myelogenous leukemia. To improve clinical efficacy and overcome mechanisms of drug resistance, a second generation of DNA methyltransferase inhibitors has been designed and is currently in clinical trials. Although efficient in monotherapy against hematologic malignancies, the potential of DNA methyltransferase inhibitors to synergize with small molecules targeting chromatin or immunotherapy will provide additional opportunities for their future clinical application against leukemia and solid tumors.
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12
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Beretta GL, Cassinelli G, Pennati M, Zuco V, Gatti L. Overcoming ABC transporter-mediated multidrug resistance: The dual role of tyrosine kinase inhibitors as multitargeting agents. Eur J Med Chem 2017; 142:271-289. [PMID: 28851502 DOI: 10.1016/j.ejmech.2017.07.062] [Citation(s) in RCA: 146] [Impact Index Per Article: 20.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2017] [Revised: 07/21/2017] [Accepted: 07/25/2017] [Indexed: 12/14/2022]
Abstract
Resistance to conventional and target specific antitumor drugs still remains one of the major cause of treatment failure and patience death. This condition often involves ATP-binding cassette (ABC) transporters that, by pumping the drugs outside from cancer cells, attenuate the potency of chemotherapeutics and negatively impact on the fate of anticancer therapy. In recent years, several tyrosine kinase inhibitors (TKIs) (e.g., imatinib, nilotinib, dasatinib, ponatinib, gefitinib, erlotinib, lapatinib, vandetanib, sunitinib, sorafenib) have been reported to interact with ABC transporters (e.g., ABCB1, ABCC1, ABCG2, ABCC10). This finding disclosed a very complex scenario in which TKIs may behave as substrates or inhibitors depending on the expression of specific pumps, drug concentration, affinity for transporters and types of co-administered agents. In this context, in-depth investigation on TKI chemosensitizing functions might provide a strong rationale for combining TKIs and conventional therapeutics in specific malignancies. The reposition of TKIs as antagonists of ABC transporters opens a new way towards anticancer therapy and clinical strategies aimed at counteracting drug resistance. This review will focus on some paradigmatic examples of the complex and not yet fully elucidated interaction between clinical available TKIs (e.g. BCR-ABL, EGFR, VEGFR inhibitors) with the main ABC transporters implicated in multidrug resistance.
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Affiliation(s)
- Giovanni Luca Beretta
- Molecular Pharmacology Unit, Department of Applied Research and Technological Development, Fondazione IRCCS Istituto Nazionale dei Tumori, Via Amadeo 42, Milano, Italy.
| | - Giuliana Cassinelli
- Molecular Pharmacology Unit, Department of Applied Research and Technological Development, Fondazione IRCCS Istituto Nazionale dei Tumori, Via Amadeo 42, Milano, Italy.
| | - Marzia Pennati
- Molecular Pharmacology Unit, Department of Applied Research and Technological Development, Fondazione IRCCS Istituto Nazionale dei Tumori, Via Amadeo 42, Milano, Italy.
| | - Valentina Zuco
- Molecular Pharmacology Unit, Department of Applied Research and Technological Development, Fondazione IRCCS Istituto Nazionale dei Tumori, Via Amadeo 42, Milano, Italy.
| | - Laura Gatti
- Molecular Pharmacology Unit, Department of Applied Research and Technological Development, Fondazione IRCCS Istituto Nazionale dei Tumori, Via Amadeo 42, Milano, Italy.
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13
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Selective Inhibitors of Histone Deacetylases 1 and 2 Synergize with Azacitidine in Acute Myeloid Leukemia. PLoS One 2017; 12:e0169128. [PMID: 28060870 PMCID: PMC5218480 DOI: 10.1371/journal.pone.0169128] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2016] [Accepted: 12/12/2016] [Indexed: 12/21/2022] Open
Abstract
Acute myeloid leukemia (AML) is a heterogeneous group of hematopoietic stem cell disorders characterized by defects in myeloid differentiation and increased proliferation of neoplastic hematopoietic precursor cells. Outcomes for patients with AML remain poor, highlighting the need for novel treatment options. Aberrant epigenetic regulation plays an important role in the pathogenesis of AML, and inhibitors of DNA methyltransferase or histone deacetylase (HDAC) enzymes have exhibited activity in preclinical AML models. Combination studies with HDAC inhibitors plus DNA methyltransferase inhibitors have potential beneficial clinical activity in AML, however the toxicity profiles of non-selective HDAC inhibitors in the combination setting limit their clinical utility. In this work, we describe the preclinical development of selective inhibitors of HDAC1 and HDAC2, which are hypothesized to have improved safety profiles, for combination therapy in AML. We demonstrate that selective inhibition of HDAC1 and HDAC2 is sufficient to achieve efficacy both as a single agent and in combination with azacitidine in preclinical models of AML, including established AML cell lines, primary leukemia cells from AML patient bone marrow samples and in vivo xenograft models of human AML. Gene expression profiling of AML cells treated with either an HDAC1/2 inhibitor, azacitidine, or the combination of both have identified a list of genes involved in transcription and cell cycle regulation as potential mediators of the combinatorial effects of HDAC1/2 inhibition with azacitidine. Together, these findings support the clinical evaluation of selective HDAC1/2 inhibitors in combination with azacitidine in AML patients.
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14
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Raynal NJM, Da Costa EM, Lee JT, Gharibyan V, Ahmed S, Zhang H, Sato T, Malouf GG, Issa JPJ. Repositioning FDA-Approved Drugs in Combination with Epigenetic Drugs to Reprogram Colon Cancer Epigenome. Mol Cancer Ther 2016; 16:397-407. [PMID: 27980103 DOI: 10.1158/1535-7163.mct-16-0588] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2016] [Revised: 10/28/2016] [Accepted: 11/17/2016] [Indexed: 11/16/2022]
Abstract
Epigenetic drugs, such as DNA methylation inhibitors (DNMTi) or histone deacetylase inhibitors (HDACi), are approved in monotherapy for cancer treatment. These drugs reprogram gene expression profiles, reactivate tumor suppressor genes (TSG) producing cancer cell differentiation and apoptosis. Epigenetic drugs have been shown to synergize with other epigenetic drugs or various anticancer drugs. To discover new molecular entities that enhance epigenetic therapy, we performed a high-throughput screening using FDA-approved libraries in combination with DNMTi or HDACi. As a screening model, we used YB5 system, a human colon cancer cell line, which contains an epigenetically silenced CMV-GFP locus, mimicking TSG silencing in cancer. CMV-GFP reactivation is triggered by DNMTi or HDACi and responds synergistically to DNMTi/HDACi combination, which phenocopies TSG reactivation upon epigenetic therapy. GFP fluorescence was used as a quantitative readout for epigenetic activity. We discovered that 45 FDA-approved drugs (4% of all drugs tested) in our FDA-approved libraries enhanced DNMTi and HDACi activity, mainly belonging to anticancer and antiarrhythmic drug classes. Transcriptome analysis revealed that combination of decitabine (DNMTi) with the antiarrhythmic proscillaridin A produced profound gene expression reprogramming, which was associated with downregulation of 153 epigenetic regulators, including two known oncogenes in colon cancer (SYMD3 and KDM8). Also, we identified about 85 FDA-approved drugs that antagonized DNMTi and HDACi activity through cytotoxic mechanisms, suggesting detrimental drug interactions for patients undergoing epigenetic therapy. Overall, our drug screening identified new combinations of epigenetic and FDA-approved drugs, which can be rapidly implemented into clinical trials. Mol Cancer Ther; 16(2); 397-407. ©2016 AACR.
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Affiliation(s)
- Noël J-M Raynal
- Fels Institute for Cancer Research and Molecular Biology, Temple University School of Medicine, Philadelphia, Pennsylvania. .,Département de pharmacologie et physiologie, Université de Montréal and Sainte-Justine University Hospital Research Center, Montréal, Québec, Canada
| | - Elodie M Da Costa
- Département de pharmacologie et physiologie, Université de Montréal and Sainte-Justine University Hospital Research Center, Montréal, Québec, Canada
| | - Justin T Lee
- Fels Institute for Cancer Research and Molecular Biology, Temple University School of Medicine, Philadelphia, Pennsylvania
| | - Vazganush Gharibyan
- Department of Leukemia, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Saira Ahmed
- Department of Leukemia, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Hanghang Zhang
- Fels Institute for Cancer Research and Molecular Biology, Temple University School of Medicine, Philadelphia, Pennsylvania
| | - Takahiro Sato
- Fels Institute for Cancer Research and Molecular Biology, Temple University School of Medicine, Philadelphia, Pennsylvania
| | - Gabriel G Malouf
- Department of Medical Oncology, Groupe Hospitalier Pitié-Salpêtrière, University Pierre and Marie Curie (Paris VI), Institut Universitaire de Cancérologie, AP-HP, Paris, France
| | - Jean-Pierre J Issa
- Fels Institute for Cancer Research and Molecular Biology, Temple University School of Medicine, Philadelphia, Pennsylvania
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15
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Kim NY, Kim MC, Kim Y. Hypomethylation reduced the aggressive potential of human malignant mesothelioma cells. Cancer Gene Ther 2016; 23:425-432. [PMID: 27857059 DOI: 10.1038/cgt.2016.57] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2016] [Revised: 09/18/2016] [Accepted: 09/23/2016] [Indexed: 01/31/2023]
Abstract
Epigenetic modifications have been implicated in the development of therapeutic resistance responsible for the poor prognosis of human malignant mesothelioma (HMM). To find a potential way to overcome this therapeutic resistance, this study investigated the anticancer effects of a DNA demethylating agent, 5-Aza-2'-Deoxycytidine (5-aza-dC), on HMM cells. The 5-aza-dC exhibited minimal detrimental effects on cell survival. However, treatment with 5-aza-dC significantly altered the biological characteristics associated with malignancy, such as cell migration and cell interaction, colony-forming capacity, and invasiveness. Moreover, it significantly reduced the fraction of side population (SP) cells, which are reportedly enriched for more aggressive cells. Large-scale methylation analysis based on methylated DNA immunoprecipitation revealed a more than two fold increase in the methylation level of major tumor suppressor genes in the SP fraction. The data indicated that SP cells might acquire malignancy by hypermethylation of tumor suppressor genes. Treatment with 5-aza-dC could attack more malignant cells through the modification of their methylation status. The results indicate that the modulation of DNA methylation might be a valuable strategy to overcome the therapeutic resistance of HMM. Moreover, ensuing changes in the biological characteristics provide a basis for further analysis of the role of methylation in HMM carcinogenesis.
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Affiliation(s)
- N-Y Kim
- Laboratory of Veterinary Clinical Pathology, College of Veterinary Medicine, Seoul National University, Seoul, Republic of Korea.,BK21 PLUS Program for Creative Veterinary Science Research, College of Veterinary Medicine, Seoul National University, Seoul, Republic of Korea
| | - M-C Kim
- Laboratory of Veterinary Clinical Pathology, College of Veterinary Medicine, Seoul National University, Seoul, Republic of Korea.,BK21 PLUS Program for Creative Veterinary Science Research, College of Veterinary Medicine, Seoul National University, Seoul, Republic of Korea
| | - Y Kim
- Laboratory of Veterinary Clinical Pathology, College of Veterinary Medicine, Seoul National University, Seoul, Republic of Korea.,Research Institute for Veterinary Science, College of Veterinary Medicine, Seoul National University, Seoul, Republic of Korea
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16
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Pawlak A, Ziolo E, Fiedorowicz A, Fidyt K, Strzadala L, Kalas W. Long-lasting reduction in clonogenic potential of colorectal cancer cells by sequential treatments with 5-azanucleosides and topoisomerase inhibitors. BMC Cancer 2016; 16:893. [PMID: 27852227 PMCID: PMC5112712 DOI: 10.1186/s12885-016-2925-6] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2016] [Accepted: 11/03/2016] [Indexed: 01/10/2023] Open
Abstract
Background The currently approved therapies fail in a substantial number of colorectal cancer (CRC) patients due to the molecular heterogeneity of CRC, hence new efficient drug combinations are urgently needed. Emerging data indicate that 5-azanucleosides are able to sensitize cancer cells to the standard chemotherapeutic agents and contribute to overcoming intrinsic or acquired chemoresistance. Methods CRC cells with different genetic backgrounds (HCT116, DLD-1, HT-29) were sequentially treated with 5-azanucleosides and topoisomerase inhibitors. The combined effects of these two drug classes on cell viability, apoptosis, signaling pathways, and colony formation were investigated. Results Here, we demonstrate that pretreatment with DNA demethylating agents, 5-aza-2′-deoxycytidine and 5-azacytidine, sensitizes CRC cells to topoisomerase inhibitors (irinotecan, etoposide, doxorubicin, mitoxantrone), reducing cell viability and clonogenicity and increasing programmed cell death more effectively than individual compounds at the same or even higher concentrations. 5-Azanucleosides did not cause considerable immediate toxic effects as evaluated by analysis of cell viability, apoptosis, DNA damage (γH2A.X), and endoplasmic reticulum (ER) stress (CHOP). However, 5-azanucleosides exerted long-lasting effects, reducing cell viability, changing cell morphology, and affecting phosphoinositide 3-kinase (PI3-kinase)/Akt signaling pathway. We found that a single exposure to 5-azanucleosides is sufficient to induce long-lasting sensitization to topoisomerase inhibitors. The combinatorial, but not separate, treatment with low doses of 5-aza-2′-deoxycytidine (0.1 μM) and etoposide (0.5 μM) caused a long-lasting (almost 70 days) reduction in clonogenic/replating ability of DLD-1 cells. Conclusions These results suggest that sequential treatments with DNA demethylating agents and topoisomerase inhibitors may exert clinically relevant anticancer effects. Electronic supplementary material The online version of this article (doi:10.1186/s12885-016-2925-6) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Alicja Pawlak
- Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, Rudolfa Weigla 12, 53-114, Wroclaw, Poland
| | - Ewa Ziolo
- Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, Rudolfa Weigla 12, 53-114, Wroclaw, Poland
| | - Anna Fiedorowicz
- Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, Rudolfa Weigla 12, 53-114, Wroclaw, Poland
| | - Klaudyna Fidyt
- Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, Rudolfa Weigla 12, 53-114, Wroclaw, Poland
| | - Leon Strzadala
- Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, Rudolfa Weigla 12, 53-114, Wroclaw, Poland
| | - Wojciech Kalas
- Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, Rudolfa Weigla 12, 53-114, Wroclaw, Poland. .,Jan Dlugosz University in Czestochowa, Waszyngtona 4/8, 42-200, Czestochowa, Poland.
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17
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Integrated genomic analysis of colorectal cancer progression reveals activation of EGFR through demethylation of the EREG promoter. Oncogene 2016; 35:6403-6415. [PMID: 27270421 PMCID: PMC5161754 DOI: 10.1038/onc.2016.170] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2015] [Revised: 02/26/2016] [Accepted: 04/12/2016] [Indexed: 12/15/2022]
Abstract
Key molecular drivers that underlie transformation of colonic epithelium into colorectal adenocarcinoma (CRC) are well described. However, the mechanisms through which clinically targeted pathways are activated during CRC progression have yet to be elucidated. Here, we used an integrative genomics approach to examine CRC progression. We used laser capture microdissection to isolate colonic crypt cells, differentiated surface epithelium, adenomas, carcinomas and metastases, and used gene expression profiling to identify pathways that were differentially expressed between the different cell types. We identified a number of potentially important transcriptional changes in developmental and oncogenic pathways, and noted a marked upregulation of EREG in primary and metastatic cancer cells. We confirmed this pattern of gene expression by in situ hybridization and observed staining consistent with autocrine expression in the tumor cells. Upregulation of EREG during the adenoma-carcinoma transition was associated with demethylation of two key sites within its promoter, and this was accompanied by an increase in the levels of epidermal growth factor receptor (EGFR) phosphorylation, as assessed by reverse-phase protein analysis. In CRC cell lines, we demonstrated that EREG demethylation led to its transcriptional upregulation, higher levels of EGFR phosphorylation, and sensitization to EGFR inhibitors. Low levels of EREG methylation in patients who received cetuximab as part of a phase II study were associated with high expression of the ligand and a favorable response to therapy. Conversely, high levels of promoter methylation and low levels of EREG expression were observed in tumors that progressed after treatment. We also noted an inverse correlation between EREG methylation and expression levels in several other cancers, including those of the head and neck, lung and bladder. Therefore, we propose that upregulation of EREG expression through promoter demethylation might be an important means of activating the EGFR pathway during the genesis of CRC and potentially other cancers.
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18
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Khamenehfar A, Gandhi MK, Chen Y, Hogge DE, Li PCH. Dielectrophoretic Microfluidic Chip Enables Single-Cell Measurements for Multidrug Resistance in Heterogeneous Acute Myeloid Leukemia Patient Samples. Anal Chem 2016; 88:5680-8. [PMID: 27149245 DOI: 10.1021/acs.analchem.5b04446] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The front-line treatment for adult acute myeloid leukemia (AML) is anthracycline-based combination chemotherapy. However, treatment outcomes remain suboptimal with relapses frequently observed. Among the mechanisms of treatment failure is multidrug resistance (MDR) mediated by the ABCB1, ABCC1, and ABCG2 drug-efflux transporters. Although genetic and phenotypic heterogeneity between leukemic blast cells is a well-recognized phenomenon, there remains minimal data on differences in MDR activity at the individual cell level. Specifically, functional assays that can distinguish the variability in MDR activity between individual leukemic blasts are lacking. Here, we outline a new dielectrophoretic (DEP) chip-based assay. This assay permits measurement of drug accumulation in single cells, termed same-single-cell analysis in the accumulation mode (SASCA-A). Initially, the assay was optimized in pretherapy samples from 20 adults with AML whose leukemic blasts had MDR activity against the anthracyline daunorubicin (DNR) tested using multiple MDR inhibitors. Parameters tested were initial drug accumulation, time to achieve signal saturation, fold-increase of DNR accumulation with MDR inhibition, ease of cell trapping, and ease of maintaining the trapped cells stationary. This enabled categorization into leukemic blast cells with MDR activity (MDR(+)) and leukemic blast cells without MDR activity (MDR(-ve)). Leukemic blasts could also be distinguished from benign white blood cells (notably these also lacked MDR activity). MDR(-ve) blasts were observed to be enriched in samples taken from patients who went on to enter complete remission (CR), whereas MDR(+) blasts were frequently observed in patients who failed to achieve CR following front-line chemotherapy. However, pronounced variability in functional MDR activity between leukemic blasts was observed, with MDR(+) cells not infrequently seen in some patients that went on to achieve CR. Next, we tested MDR activity in two paired AML patient samples. Pretherapy samples taken from patients that achieved CR to front-line chemotherapy were compared with samples taken at time of subsequent relapse. MDR(+) cells were frequently observed in leukemic blast cells in both pretherapy and relapsed samples, consistent with MDR as a mechanism of relapse in these patients. We demonstrate the ability of a new DEP microfluidic chip-based assay to identify heterogeneity in MDR activity in leukemic blasts. The test provides a platform for future studies to characterize the mechanistic basis for heterogeneity in MDR activity at the individual cell level.
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Affiliation(s)
| | - Maher K Gandhi
- The University of Queensland , Diamantina Institute, 37 Kent Street, Woolloongabba, Queensland, Australia
| | | | - Donna E Hogge
- Terry Fox Laboratory, BC Cancer Agency , 675 West 10th Avenue, Vancouver, British Columbia, Canada
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19
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Sauvat A, Wang Y, Segura F, Spaggiari S, Müller K, Zhou H, Galluzzi L, Kepp O, Kroemer G. Quantification of cellular viability by automated microscopy and flow cytometry. Oncotarget 2016; 6:9467-75. [PMID: 25816366 PMCID: PMC4496231 DOI: 10.18632/oncotarget.3266] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2015] [Accepted: 01/31/2015] [Indexed: 12/15/2022] Open
Abstract
Cellular viability is usually determined by measuring the capacity of cells to exclude vital dyes such as 4′,6-diamidino-2-phenylindole (DAPI), or by assessing nuclear morphology with chromatinophilic plasma membrane-permeant dyes, such as Hoechst 33342. However, a fraction of cells that exclude DAPI or exhibit normal nuclear morphology have already lost mitochondrial functions and/or manifest massive activation of apoptotic caspases, and hence are irremediably committed to death. Here, we developed a protocol for the simultaneous detection of plasma membrane integrity (based on DAPI) or nuclear morphology (based on Hoechst 33342), mitochondrial functions (based on the mitochondrial transmembrane potential probe DiOC6(3)) and caspase activation (based on YO-PRO®-3, which can enter cells exclusively upon the caspase-mediated activation of pannexin 1 channels). This method, which allows for the precise quantification of dead, dying and healthy cells, can be implemented on epifluorescence microscopy or flow cytometry platforms and is compatible with a robotized, high-throughput workflow.
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Affiliation(s)
- Allan Sauvat
- Equipe 11 labellisée par la Ligue Nationale contre le Cancer, Centre de Recherche des Cordeliers, Paris, France.,INSERM, U1138, Paris, France.,Metabolomics and Cell Biology Platforms, Gustave Roussy Cancer Campus, Villejuif, France
| | - Yidan Wang
- Equipe 11 labellisée par la Ligue Nationale contre le Cancer, Centre de Recherche des Cordeliers, Paris, France.,INSERM, U1138, Paris, France.,Metabolomics and Cell Biology Platforms, Gustave Roussy Cancer Campus, Villejuif, France.,Faculté de Medecine, Université Paris-Sud, Le Kremlin-Bicêtre, France
| | - Florian Segura
- Equipe 11 labellisée par la Ligue Nationale contre le Cancer, Centre de Recherche des Cordeliers, Paris, France.,INSERM, U1138, Paris, France.,Metabolomics and Cell Biology Platforms, Gustave Roussy Cancer Campus, Villejuif, France
| | - Sabrina Spaggiari
- Equipe 11 labellisée par la Ligue Nationale contre le Cancer, Centre de Recherche des Cordeliers, Paris, France.,INSERM, U1138, Paris, France.,Metabolomics and Cell Biology Platforms, Gustave Roussy Cancer Campus, Villejuif, France
| | - Kevin Müller
- Equipe 11 labellisée par la Ligue Nationale contre le Cancer, Centre de Recherche des Cordeliers, Paris, France.,INSERM, U1138, Paris, France.,Metabolomics and Cell Biology Platforms, Gustave Roussy Cancer Campus, Villejuif, France
| | - Heng Zhou
- Equipe 11 labellisée par la Ligue Nationale contre le Cancer, Centre de Recherche des Cordeliers, Paris, France.,INSERM, U1138, Paris, France.,Metabolomics and Cell Biology Platforms, Gustave Roussy Cancer Campus, Villejuif, France.,Faculté de Medecine, Université Paris-Sud, Le Kremlin-Bicêtre, France
| | - Lorenzo Galluzzi
- Equipe 11 labellisée par la Ligue Nationale contre le Cancer, Centre de Recherche des Cordeliers, Paris, France.,INSERM, U1138, Paris, France.,Gustave Roussy Cancer Campus, Villejuif, France.,Faculté de Medecine, Université Paris Descartes, Sorbonne Paris Cité, Paris, France
| | - Oliver Kepp
- Equipe 11 labellisée par la Ligue Nationale contre le Cancer, Centre de Recherche des Cordeliers, Paris, France.,INSERM, U1138, Paris, France.,Metabolomics and Cell Biology Platforms, Gustave Roussy Cancer Campus, Villejuif, France
| | - Guido Kroemer
- Equipe 11 labellisée par la Ligue Nationale contre le Cancer, Centre de Recherche des Cordeliers, Paris, France.,INSERM, U1138, Paris, France.,Metabolomics and Cell Biology Platforms, Gustave Roussy Cancer Campus, Villejuif, France.,Faculté de Medecine, Université Paris Descartes, Sorbonne Paris Cité, Paris, France.,Pôle de Biologie, Hopitâl Européen George Pompidou, AP-HP, Paris, France
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20
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Atalay F, Ateşoğlu EB. Low Dose Cytosine Arabinoside and Azacitidine Combination in Elderly Patients with Acute Myeloid Leukemia and Refractory Anemia with Excess Blasts (MDS-RAEB2). Indian J Hematol Blood Transfus 2016; 32:46-53. [PMID: 26855506 DOI: 10.1007/s12288-015-0509-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2014] [Accepted: 01/17/2015] [Indexed: 11/24/2022] Open
Abstract
Only one-third of elderly (>60 years) AML and MDS-RAEB2 patients may receive intensive chemotherapy treatment alternatives that are limited in this patient group due to the potential of severe toxicity. Previous studies have shown that azacitidine and low dose cytarabine treatments may be a beneficial treatment option for these patients. In this study, we aimed to good results with low toxicity in elderly patients. We retrospectively analyzed the AML and MDS-RAEB2 patients who received azacitidine monotherapy and azacitidine and LDL-ara-c combination therapy for a comparison of their response to therapy, survival rates, and toxicity rates and for determining the factors that could affect their overall survival. A total of 27 patients who were diagnosed with de novo AML and MDS-RAEB2 and who received at least four cycles of chemotherapy were included in the study, and the data were evaluated retrospectively. When monotherapy and combination therapy groups were compared, the pretreatment bone marrow blast count was observed to be greater in the combination therapy group. A statistically significant difference was not detected between the groups regarding the response to therapy ratios (p = 0.161) (42.9 and 57.1 %, respectively). No difference was detected between the groups regarding therapy-related toxicity. Infections were the most common complication. Progression-free survival was 30.3 % for the azacitidine monotherapy group and 66.7 % for the combination (azacitidine + LD-ara-c) group. The factors influencing the overall survival rate were determined based on the response to the first-line therapies, more than a grade 2 infection, fever, and relapse in a multi-variance analysis. The combination therapy may be a well-tolerated treatment option for the elderly, vulnerable AML patients whose blast count is high in response to therapy rates, overall survival rates, and toxicities are not different, although the pre-treatment bone marrow blast count was greater in the combination therapy groups compared with the monotherapy group.
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Affiliation(s)
- Figen Atalay
- Department of Hematology, Baskent University School of Medicine, Oymacı Sok No 7 Altunizade, Uskudar, İstanbul, Turkey
| | - Elif Birtaş Ateşoğlu
- Department of Hematology, Kocaeli University School of Medicine, Kocaeli, Turkey
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Ahrens TD, Timme S, Hoeppner J, Ostendorp J, Hembach S, Follo M, Hopt UT, Werner M, Busch H, Boerries M, Lassmann S. Selective inhibition of esophageal cancer cells by combination of HDAC inhibitors and Azacytidine. Epigenetics 2016; 10:431-45. [PMID: 25923331 DOI: 10.1080/15592294.2015.1039216] [Citation(s) in RCA: 59] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Esophageal cancers are highly aggressive tumors with poor prognosis despite some recent advances in surgical and radiochemotherapy treatment options. This study addressed the feasibility of drugs targeting epigenetic modifiers in esophageal squamous cell carcinoma (ESCC) and esophageal adenocarcinoma (EAC) cells. We tested inhibition of histone deacetylases (HDACs) by SAHA, MS-275, and FK228, inhibition of DNA methyltransferases by Azacytidine (AZA) and Decitabine (DAC), and the effect of combination treatment using both types of drugs. The drug targets, HDAC1/2/3 and DNMT1, were expressed in normal esophageal epithelium and tumor cells of ESCC or EAC tissue specimens, as well as in non-neoplastic esophageal epithelial (Het-1A), ESCC (OE21, Kyse-270, Kyse-410), and EAC (OE33, SK-GT-4) cell lines. In vitro, HDAC activity, histone acetylation, and p21 expression were similarly affected in non-neoplastic, ESCC, and EAC cell lines post inhibitor treatment. Combined MS-275/AZA treatment, however, selectively targeted esophageal cancer cell lines by inducing DNA damage, cell viability loss, and apoptosis, and by decreasing cell migration. Non-neoplastic Het-1A cells were protected against HDACi (MS-275)/AZA treatment. RNA transcriptome analyses post MS-275 and/or AZA treatment identified novel regulated candidate genes (up: BCL6, Hes2; down: FAIM, MLKL), which were specifically associated with the treatment responses of esophageal cancer cells. In summary, combined HDACi/AZA treatment is efficient and selective for the targeting of esophageal cancer cells, despite similar target expression of normal and esophageal cancer epithelium, in vitro and in human esophageal carcinomas. The precise mechanisms of action of treatment responses involve novel candidate genes regulated by HDACi/AZA in esophageal cancer cells. Together, targeting of epigenetic modifiers in esophageal cancers may represent a potential future therapeutic approach.
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Key Words
- 5mC, 5-methylcytidine
- AZA, Azacytidine
- DAC, Decitabine
- DNMT, DNA (cytosine-5)-methyltransferase
- EAC, esophageal adenocarcinoma
- ESCC, esophageal squamous cell carcinoma
- FAIM, Fas apoptotic inhibitory molecule
- GEJ, gastro-esophageal junction
- H3Ac, histone H3 acetylation
- H3K4me3, histone H3 trimethylation at lysine 4
- H3K9Ac, histone 3 lysine 9 acetylation
- HDAC, histone deacetylases
- HDACi, HDAC inhibitor
- Hes-2, Hairy and enhancer of split 2
- SAHA, suberoylanilide hydroxamic acid
- TSA, Trichostatin A
- azacytidine/gene pathway regulation
- epigenetics/HDAC inhibitor
- esophageal cancer
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Affiliation(s)
- Theresa D Ahrens
- a Dept. of Pathology; University Medical Center ; Freiburg , Germany
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22
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Khamenehfar A, Beischlag TV, Russell PJ, Ling MTP, Nelson C, Li PCH. Label-free isolation of a prostate cancer cell among blood cells and the single-cell measurement of drug accumulation using an integrated microfluidic chip. BIOMICROFLUIDICS 2015; 9:064104. [PMID: 26594265 PMCID: PMC4644147 DOI: 10.1063/1.4934715] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/14/2015] [Accepted: 10/14/2015] [Indexed: 05/12/2023]
Abstract
Circulating tumor cells (CTCs) are found in the blood of patients with cancer. Although these cells are rare, they can provide useful information for chemotherapy. However, isolation of these rare cells from blood is technically challenging because they are small in numbers. An integrated microfluidic chip, dubbed CTC chip, was designed and fabricated for conducting tumor cell isolation. As CTCs usually show multidrug resistance (MDR), the effect of MDR inhibitors on chemotherapeutic drug accumulation in the isolated single tumor cell is measured. As a model of CTC isolation, human prostate cancer cells were mixed with mouse blood cells and the label-free isolation of the tumor cells was conducted based on cell size difference. The major advantages of the CTC chip are the ability for fast cell isolation, followed by multiple rounds of single-cell measurements, suggesting a potential assay for detecting the drug responses based on the liquid biopsy of cancer patients.
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Affiliation(s)
- A Khamenehfar
- Department of Chemistry, Simon Fraser University , Burnaby, British Columbia V5A 1S6, Canada
| | - T V Beischlag
- Faculty of Health Sciences, Simon Fraser University , Burnaby, British Columbia V5A1S6, Canada
| | - P J Russell
- Australian Prostate Cancer Research Centre-Queensland, Institute of Health and Biomedical Innovation, Department Faculty of Health, Queensland University of Technology , Princess Alexandra Hospital, Translational Research Institute, Brisbane, Australia
| | - M T P Ling
- Australian Prostate Cancer Research Centre-Queensland, Institute of Health and Biomedical Innovation, Department Faculty of Health, Queensland University of Technology , Princess Alexandra Hospital, Translational Research Institute, Brisbane, Australia
| | - C Nelson
- Australian Prostate Cancer Research Centre-Queensland, Institute of Health and Biomedical Innovation, Department Faculty of Health, Queensland University of Technology , Princess Alexandra Hospital, Translational Research Institute, Brisbane, Australia
| | - P C H Li
- Department of Chemistry, Simon Fraser University , Burnaby, British Columbia V5A 1S6, Canada
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23
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Obrist F, Manic G, Kroemer G, Vitale I, Galluzzi L. Trial Watch: Proteasomal inhibitors for anticancer therapy. Mol Cell Oncol 2015; 2:e974463. [PMID: 27308423 PMCID: PMC4904962 DOI: 10.4161/23723556.2014.974463] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2014] [Revised: 09/15/2014] [Accepted: 09/17/2014] [Indexed: 01/12/2023]
Abstract
The so-called "ubiquitin-proteasome system" (UPS) is a multicomponent molecular apparatus that catalyzes the covalent attachment of several copies of the small protein ubiquitin to other proteins that are generally (but not always) destined to proteasomal degradation. This enzymatic cascade is crucial for the maintenance of intracellular protein homeostasis (both in physiological conditions and in the course of adaptive stress responses), and regulates a wide array of signaling pathways. In line with this notion, defects in the UPS have been associated with aging as well as with several pathological conditions including cardiac, neurodegenerative, and neoplastic disorders. As transformed cells often experience a constant state of stress (as a result of the hyperactivation of oncogenic signaling pathways and/or adverse microenvironmental conditions), their survival and proliferation are highly dependent on the integrity of the UPS. This rationale has driven an intense wave of preclinical and clinical investigation culminating in 2003 with the approval of the proteasomal inhibitor bortezomib by the US Food and Drug Administration for use in multiple myeloma patients. Another proteasomal inhibitor, carfilzomib, is now licensed by international regulatory agencies for use in multiple myeloma patients, and the approved indications for bortezomib have been extended to mantle cell lymphoma. This said, the clinical activity of bortezomib and carfilzomib is often limited by off-target effects, innate/acquired resistance, and the absence of validated predictive biomarkers. Moreover, the antineoplastic activity of proteasome inhibitors against solid tumors is poor. In this Trial Watch we discuss the contribution of the UPS to oncogenesis and tumor progression and summarize the design and/or results of recent clinical studies evaluating the therapeutic profile of proteasome inhibitors in cancer patients.
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Affiliation(s)
- Florine Obrist
- Université Paris-Sud/Paris XI; Le Kremlin-Bicêtre, France
- INSERM, U1138; Paris, France
- Equipe 11 labelisée par la Ligue Nationale contre le Cancer, Center de Recherche des Cordeliers; Paris, France
- Gustave Roussy Cancer Campus; Villejuif, France
| | | | - Guido Kroemer
- INSERM, U1138; Paris, France
- Equipe 11 labelisée par la Ligue Nationale contre le Cancer, Center de Recherche des Cordeliers; Paris, France
- Université Paris Descartes/Paris V; Sorbonne Paris Cité; Paris, France
- Pôle de Biologie, Hôpital Européen Georges Pompidou; Paris, France
- Metabolomics and Cell Biology Platforms; Gustave Roussy Cancer Campus; Villejuif, France
| | - Ilio Vitale
- Regina Elena National Cancer Institute; Rome, Italy
- Department of Biology, University of Rome “Tor Vergata”
| | - Lorenzo Galluzzi
- INSERM, U1138; Paris, France
- Equipe 11 labelisée par la Ligue Nationale contre le Cancer, Center de Recherche des Cordeliers; Paris, France
- Gustave Roussy Cancer Campus; Villejuif, France
- Université Paris Descartes/Paris V; Sorbonne Paris Cité; Paris, France
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24
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25
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Vacchelli E, Pol J, Bloy N, Eggermont A, Cremer I, Fridman WH, Galon J, Marabelle A, Kohrt H, Zitvogel L, Kroemer G, Galluzzi L. Trial watch: Tumor-targeting monoclonal antibodies for oncological indications. Oncoimmunology 2015; 4:e985940. [PMID: 25949870 DOI: 10.4161/2162402x.2014.985940] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2014] [Accepted: 05/11/2014] [Indexed: 12/31/2022] Open
Abstract
An expanding panel of monoclonal antibodies (mAbs) that specifically target malignant cells or intercept trophic factors delivered by the tumor stroma is now available for cancer therapy. These mAbs can exert direct antiproliferative/cytotoxic effects as they inhibit pro-survival signal transduction cascades or activate lethal receptors at the plasma membrane of cancer cells, they can opsonize neoplastic cells to initiate a tumor-targeting immune response, or they can be harnessed to specifically deliver toxins or radionuclides to transformed cells. As an indication of the success of this immunotherapeutic paradigm, international regulatory agencies approve new tumor-targeting mAbs for use in cancer patients every year. Moreover, the list of indications for previously licensed molecules is frequently expanded to other neoplastic disorders as the results of large, randomized clinical trials become available. Here, we discuss recent advances in the preclinical and clinical development of tumor-targeting mAbs for oncological indications.
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Affiliation(s)
- Erika Vacchelli
- Gustave Roussy Cancer Campus ; Villejuif, France ; INSERM; U1138 ; Paris, France ; Equipe 11 labellisée par la Ligue Nationale contre le Cancer; Centre de Recherche des Cordeliers ; Paris, France
| | - Jonathan Pol
- Gustave Roussy Cancer Campus ; Villejuif, France ; INSERM; U1138 ; Paris, France ; Equipe 11 labellisée par la Ligue Nationale contre le Cancer; Centre de Recherche des Cordeliers ; Paris, France
| | - Norma Bloy
- Gustave Roussy Cancer Campus ; Villejuif, France ; INSERM; U1138 ; Paris, France ; Equipe 11 labellisée par la Ligue Nationale contre le Cancer; Centre de Recherche des Cordeliers ; Paris, France
| | | | - Isabelle Cremer
- INSERM; U1138 ; Paris, France ; Equipe 13; Centre de Recherche des Cordeliers ; Paris, France ; Université Pierre et Marie Curie/Paris VI ; Paris, France
| | - Wolf Hervé Fridman
- INSERM; U1138 ; Paris, France ; Equipe 13; Centre de Recherche des Cordeliers ; Paris, France ; Université Pierre et Marie Curie/Paris VI ; Paris, France
| | - Jérôme Galon
- INSERM; U1138 ; Paris, France ; Université Pierre et Marie Curie/Paris VI ; Paris, France ; Laboratory of Integrative Cancer Immunology; Centre de Recherche des Cordeliers ; Paris, France ; Université Paris Descartes/Paris V; Sorbonne Paris Cité ; Paris, France
| | - Aurélien Marabelle
- Gustave Roussy Cancer Campus ; Villejuif, France ; INSERM ; U1015 , Villejuif, France
| | - Holbrook Kohrt
- Department of Medicine; Division of Oncology; Stanford University ; Stanford, CA, USA
| | - Laurence Zitvogel
- Gustave Roussy Cancer Campus ; Villejuif, France ; INSERM ; U1015 , Villejuif, France
| | - Guido Kroemer
- INSERM; U1138 ; Paris, France ; Equipe 11 labellisée par la Ligue Nationale contre le Cancer; Centre de Recherche des Cordeliers ; Paris, France ; Université Paris Descartes/Paris V; Sorbonne Paris Cité ; Paris, France ; Pôle de Biologie; Hôpital Européen Georges Pompidou ; AP-HP ; Paris, France ; Metabolomics and Cell Biology Platforms; Gustave Roussy Cancer Campus ; Villejuif, France
| | - Lorenzo Galluzzi
- Gustave Roussy Cancer Campus ; Villejuif, France ; INSERM; U1138 ; Paris, France ; Equipe 11 labellisée par la Ligue Nationale contre le Cancer; Centre de Recherche des Cordeliers ; Paris, France ; Université Paris Descartes/Paris V; Sorbonne Paris Cité ; Paris, France
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26
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Sayar H, Czader M, Amin C, Cangany M, Konig H, Cripe LD. Pilot study of erlotinib in patients with acute myeloid leukemia. Leuk Res 2014; 39:170-2. [PMID: 25498508 DOI: 10.1016/j.leukres.2014.11.022] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2014] [Accepted: 11/24/2014] [Indexed: 10/24/2022]
Abstract
We conducted a pilot study to investigate clinical efficacy of tyrosine kinase inhibitor erlotinib in the treatment of acute myeloid leukemia (AML). A total of 11 patients with de novo AML were treated, including 2 with relapsed and/or refractory disease and 9 older patients with previously untreated AML. Patients with high baseline leukocyte count were excluded. Erlotinib was given orally at 150 mg per day continuously in 28-day cycles. The treatment was tolerated well, and no toxicities were observed. An initial reduction in circulating blasts, followed by disease progression, was observed in 2 patients. Nine other patients did not demonstrate any response in blood or bone marrow. Baseline and post-cycle 1 flow-cytometry were performed on bone marrow blasts to investigate signs of differentiation. No immunophenotypic changes suggestive of differentiation were observed. This pilot study did not demonstrate response to standard doses of erlotinib in patients with AML.
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Affiliation(s)
- Hamid Sayar
- Indiana University Simon Cancer Center, Indiana University School of Medicine, Indianapolis, IN, United States.
| | - Magdalena Czader
- Department of Pathology, Indiana University School of Medicine, Indianapolis, IN, United States
| | - Chirag Amin
- Hematology, Indiana Hemophilia Thrombosis Center, Indianapolis, IN, United States
| | - Mary Cangany
- Hematology-Oncology, Indiana University Simon Cancer Center, Indianapolis, IN, United States
| | - Heiko Konig
- Indiana University Simon Cancer Center, Indiana University School of Medicine, Indianapolis, IN, United States
| | - Larry D Cripe
- Indiana University Simon Cancer Center, Indiana University School of Medicine, Indianapolis, IN, United States
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27
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A phase I/II trial of Erlotinib in higher risk myelodysplastic syndromes and acute myeloid leukemia after azacitidine failure. Leuk Res 2014; 38:1430-4. [PMID: 25449687 DOI: 10.1016/j.leukres.2014.09.014] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2014] [Revised: 09/22/2014] [Accepted: 09/27/2014] [Indexed: 01/19/2023]
Abstract
Survival after azacitidine (AZA) failure in higher-risk myelodysplastic syndromes (MDS) is poor and new treatment options are needed. Erlotinib, an oral inhibitor of the epidermal-growth-factor-receptor (EGFR), has shown in preclinical models some efficacy in higher risk MDS and acute myeloid leukemia (AML). In this phase I/II trial, 30 patients received 100mg/day (n=5) or 150mg/day (n=25) of Erlotinib orally after primary or secondary resistance to AZA treatment. Eighteen MDS and 12 AML patients were treated. This outpatient treatment was well tolerated with limited grade III-IV extra hematological toxicities (skin (n=1), and diarrhea (n=3). Response was observed in 6 patients (20%) including 1 complete remission (CR), 1 marrow CR and 4 hematological improvement (2 erythroid and 2 on platelets). Median duration of response was 5 months. Erlotinib appears to induce a significant number of responses in higher risk MDS/AML having failed AZA treatment. Given the good safety profile of Erlotinib, its combination with other drugs could be tested in the future in MDS and AML.
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28
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Chakravarti B, Akhtar T, Rai B, Yadav M, Akhtar Siddiqui J, Dhar Dwivedi SK, Thakur R, Singh AK, Singh AK, Kumar H, Khan K, Pal S, Rath SK, Lal J, Konwar R, Trivedi AK, Datta D, Mishra DP, Godbole MM, Sanyal S, Chattopadhyay N, Kumar A. Thioaryl Naphthylmethanone Oxime Ether Analogs as Novel Anticancer Agents. J Med Chem 2014; 57:8010-25. [DOI: 10.1021/jm500873e] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Madan Madhav Godbole
- Department
of Molecular Medicine and Biotechnology, Sanjay Gandhi Post Graduate Institute of Medical Sciences, Lucknow, 226014, India
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29
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Komrokji RS, Padron E, Yu D, Fulp WJ, Rodriguez Y, Tinsley S, List AF, Lancet JE. Phase II clinical study of erlotinib for treatment of myelodysplastic syndromes. Am J Hematol 2014; 89:809-12. [PMID: 24764152 DOI: 10.1002/ajh.23749] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2014] [Accepted: 04/21/2014] [Indexed: 11/07/2022]
Abstract
Outcome in patients with myelodysplastic syndrome (MDS) after azanucleoside failure is poor with unmet need for active novel agents. Preclinical data have suggested that erlotinib has in vivo and in vitro off epidermal growth factor receptor (EGFR)-target activity in MDS. We conducted a phase II study with single-agent erlotinib 150 mg/day orally in MDS patients following azanucleoside failure. All intermediate-2 or high-risk MDS patients by International Prognostic Scoring System and only those low/intermediate-1 patients with transfusion-dependent anemia or platelet counts <50 × 10(9) /L or a significant clinical hemorrhage requiring platelet transfusion or ANC <1 × 10(9) /L were eligible, with most of our patients being at high risk. In 35 eligible patients, overall best response was 14% (3 patients having marrow complete response and 2 hematological improvement). Four deaths occurred on study (sepsis, intracranial hemorrhage, sudden death, and acute myeloid leukemia (AML)). The most common observed grade 3/4 toxicities according to CTCAE v3 were diarrhea (17.1%), rash (17.1%), and infection (11.6%), accompanied by fatigue, thrombocytopenia, and anorexia at 5.7% each. Median overall survival was 6.8 months (95% CI 4.9-13.2), and leukemia-free survival was 5 months (95% CI 3.4-7.3). Erlotinib was generally well tolerated, with modest single-agent activity. Given these results and preclinical data suggesting synergistic effect with azanucleosides, the combination should be further explored.
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Affiliation(s)
- Rami S. Komrokji
- H. Lee Moffitt Cancer Center and Research Institute; Tampa Florida
| | - Eric Padron
- H. Lee Moffitt Cancer Center and Research Institute; Tampa Florida
| | - Daohai Yu
- H. Lee Moffitt Cancer Center and Research Institute; Tampa Florida
| | - William J. Fulp
- H. Lee Moffitt Cancer Center and Research Institute; Tampa Florida
| | | | - Sara Tinsley
- H. Lee Moffitt Cancer Center and Research Institute; Tampa Florida
| | - Alan F. List
- H. Lee Moffitt Cancer Center and Research Institute; Tampa Florida
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30
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A phase II study of the EGFR inhibitor gefitinib in patients with acute myeloid leukemia. Leuk Res 2013; 38:430-4. [PMID: 24522247 DOI: 10.1016/j.leukres.2013.10.026] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2013] [Revised: 10/22/2013] [Accepted: 10/28/2013] [Indexed: 12/31/2022]
Abstract
Novel therapies for the treatment of acute myeloid leukemia are required to overcome disease resistance and to provide potentially less toxic therapies for older adults. Prior clinical trials involving patients with non-small cell lung cancer have demonstrated the safety and biologic activity of the administration of EGFR inhibitors in carefully selected patients. The potential efficacy of this approach in patients with acute myeloid leukemia is unknown. The effects of gefitinib on differentiation induction and cell viability in AML cell lines and primary patient AML cells were previously reported and cell viability was inhibited in a clinically achievable range. To determine if EGFR inhibitors would be therapeutically efficacious in advanced AML, we performed a phase II trial in which 18 patients with a median age of 72 (range, 57-84 years) were treated with gefitinib (750mg orally daily). While there were no unexpected toxicities, no patients experienced an objective response, though one had stable disease lasting 16 months. We conclude that in spite of pre-clinical activity and anecdotal cases of response to EGFR inhibitors, routine use of the EGFR inhibitor gefitinib as a single agent for advanced AML is not appropriate.
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31
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Aranda F, Vacchelli E, Eggermont A, Galon J, Sautès-Fridman C, Tartour E, Zitvogel L, Kroemer G, Galluzzi L. Trial Watch: Peptide vaccines in cancer therapy. Oncoimmunology 2013; 2:e26621. [PMID: 24498550 PMCID: PMC3902120 DOI: 10.4161/onci.26621] [Citation(s) in RCA: 87] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2013] [Accepted: 09/26/2013] [Indexed: 02/08/2023] Open
Abstract
Throughout the past 3 decades, along with the recognition that the immune system not only influences oncogenesis and tumor progression, but also determines how established neoplastic lesions respond therapy, renovated enthusiasm has gathered around the possibility of using vaccines as anticancer agents. Such an enthusiasm quickly tempered when it became clear that anticancer vaccines would have to be devised as therapeutic, rather than prophylactic, measures, and that malignant cells often fail to elicit (or actively suppress) innate and adaptive immune responses. Nonetheless, accumulating evidence indicates that a variety of anticancer vaccines, including cell-based, DNA-based, and purified component-based preparations, are capable of circumventing the poorly immunogenic and highly immunosuppressive nature of most tumors and elicit (at least under some circumstances) therapeutically relevant immune responses. Great efforts are currently being devoted to the identification of strategies that may provide anticancer vaccines with the capacity of breaking immunological tolerance and eliciting tumor-associated antigen-specific immunity in a majority of patients. In this sense, promising results have been obtained by combining anticancer vaccines with a relatively varied panels of adjuvants, including multiple immunostimulatory cytokines, Toll-like receptor agonists as well as inhibitors of immune checkpoints. One year ago, in the December issue of OncoImmunology, we discussed the biological mechanisms that underlie the antineoplastic effects of peptide-based vaccines and presented an abundant literature demonstrating the prominent clinical potential of such an approach. Here, we review the latest developments in this exciting area of research, focusing on high-profile studies that have been published during the last 13 mo and clinical trials launched in the same period to evaluate purified peptides or full-length proteins as therapeutic anticancer agents.
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Affiliation(s)
- Fernando Aranda
- Gustave Roussy; Villejuif, France ; INSERM, U848; Villejuif, France ; Université Paris-Sud/Paris XI; Le Kremlin-Bicêtre, France ; Equipe 11 labellisée par la Lique Nationale contre le Cancer; Centre de Recherche des Cordeliers; Paris, France
| | - Erika Vacchelli
- Gustave Roussy; Villejuif, France ; INSERM, U848; Villejuif, France ; Université Paris-Sud/Paris XI; Le Kremlin-Bicêtre, France ; Equipe 11 labellisée par la Lique Nationale contre le Cancer; Centre de Recherche des Cordeliers; Paris, France
| | | | - Jerome Galon
- Université Paris Descartes/Paris V, Sorbonne Paris Cité; Paris, France ; Université Pierre et Marie Curie/Paris VI; Paris, France ; INSERM, U872; Paris, France ; Equipe 15, Centre de Recherche des Cordeliers; Paris, France
| | - Catherine Sautès-Fridman
- Université Pierre et Marie Curie/Paris VI; Paris, France ; INSERM, U872; Paris, France ; Equipe 13, Centre de Recherche des Cordeliers; Paris, France
| | - Eric Tartour
- Pôle de Biologie; Hôpital Européen Georges Pompidou; AP-HP; Paris, France ; INSERM, U970; Paris, France
| | - Laurence Zitvogel
- Gustave Roussy; Villejuif, France ; INSERM, U1015; CICBT507; Villejuif, France
| | - Guido Kroemer
- Pôle de Biologie; Hôpital Européen Georges Pompidou; AP-HP; Paris, France ; INSERM, U848; Villejuif, France ; Equipe 11 labellisée par la Lique Nationale contre le Cancer; Centre de Recherche des Cordeliers; Paris, France ; Université Paris Descartes/Paris V, Sorbonne Paris Cité; Paris, France ; Metabolomics and Cell Biology Platforms; Gustave Roussy; Villejuif, France
| | - Lorenzo Galluzzi
- Gustave Roussy; Villejuif, France ; Equipe 11 labellisée par la Lique Nationale contre le Cancer; Centre de Recherche des Cordeliers; Paris, France ; Université Paris Descartes/Paris V, Sorbonne Paris Cité; Paris, France
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32
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Semeraro M, Vacchelli E, Eggermont A, Galon J, Zitvogel L, Kroemer G, Galluzzi L. Trial Watch: Lenalidomide-based immunochemotherapy. Oncoimmunology 2013; 2:e26494. [PMID: 24482747 PMCID: PMC3897503 DOI: 10.4161/onci.26494] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2013] [Accepted: 09/14/2013] [Indexed: 12/19/2022] Open
Abstract
Lenalidomide is a synthetic derivative of thalidomide currently approved by the US Food and Drug Administration for use in patients affected by multiple myeloma (in combination with dexamethasone) and low or intermediate-1 risk myelodysplastic syndromes that harbor 5q cytogenetic abnormalities. For illustrative purposes, the mechanism of action of lenalidomide can be subdivided into a cancer cell-intrinsic, a stromal, and an immunological component. Indeed, lenalidomide not only exerts direct cell cycle-arresting and pro-apoptotic effects on malignant cells, but also interferes with their physical and functional interaction with the tumor microenvironment and mediates a robust, pleiotropic immunostimulatory activity. In particular, lenalidomide has been shown to stimulate the cytotoxic functions of T lymphocytes and natural killer cells, to limit the immunosuppressive impact of regulatory T cells, and to modulate the secretion of a wide range of cytokines, including tumor necrosis factor α, interferon γ as well as interleukin (IL)-6, IL-10, and IL-12. Throughout the last decade, the antineoplastic and immunostimulatory potential of lenalidomide has been investigated in patients affected by a wide variety of hematological and solid malignancies. Here, we discuss the results of these studies and review the status of clinical trials currently assessing the safety and efficacy of this potent immunomodulatory drug in oncological indications.
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Affiliation(s)
- Michaela Semeraro
- Gustave Roussy; Villejuif, France ; INSERM, U1015, CICBT507; Villejuif, France
| | - Erika Vacchelli
- Gustave Roussy; Villejuif, France ; Université Paris-Sud/Paris XI; Le Kremlin-Bicêtre, France ; INSERM, U848; Villejuif, France
| | | | - Jerome Galon
- Université Paris Descartes/Paris V, Sorbonne Paris Cité; Paris, France ; Université Pierre et Marie Curie/Paris VI; Paris, France ; Equipe 15, Centre de Recherche des Cordeliers; Paris, France ; INSERM, U872; Paris, France
| | - Laurence Zitvogel
- Gustave Roussy; Villejuif, France ; INSERM, U1015, CICBT507; Villejuif, France
| | - Guido Kroemer
- Equipe 11 labellisée par la Ligue Nationale contre le Cancer, Centre de Recherche des Cordeliers; Paris, France ; Metabolomics and Cell Biology Platforms, Gustave Roussy; Villejuif, France ; INSERM, U848; Villejuif, France ; Université Paris Descartes/Paris V, Sorbonne Paris Cité; Paris, France ; Pôle de Biologie, Hôpital Européen Georges Pompidou, AP-HP; Paris, France
| | - Lorenzo Galluzzi
- Gustave Roussy; Villejuif, France ; Université Paris Descartes/Paris V, Sorbonne Paris Cité; Paris, France ; Equipe 11 labellisée par la Ligue Nationale contre le Cancer, Centre de Recherche des Cordeliers; Paris, France ; Metabolomics and Cell Biology Platforms, Gustave Roussy; Villejuif, France
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33
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Lainey E, Wolfromm A, Sukkurwala AQ, Micol JB, Fenaux P, Galluzzi L, Kepp O, Kroemer G. EGFR inhibitors exacerbate differentiation and cell cycle arrest induced by retinoic acid and vitamin D3 in acute myeloid leukemia cells. Cell Cycle 2013; 12:2978-91. [PMID: 23974111 DOI: 10.4161/cc.26016] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
By means of an unbiased, automated fluorescence microscopy-based screen, we identified the epidermal growth factor receptor (EGFR) inhibitors erlotinib and gefitinib as potent enhancers of the differentiation of HL-60 acute myeloid leukemia (AML) cells exposed to suboptimal concentrations of vitamin A (all-trans retinoic acid, ATRA) or vitamin D (1α,25-hydroxycholecalciferol, VD). Erlotinib and gefitinib alone did not promote differentiation, yet stimulated the acquisition of morphological and biochemical maturation markers (including the expression of CD11b and CD14 as well as increased NADPH oxidase activity) when combined with either ATRA or VD. Moreover, the combination of erlotinib and ATRA or VD synergistically induced all the processes that are normally linked to terminal hematopoietic differentiation, namely, a delayed proliferation arrest in the G0/G1 phase of the cell cycle, cellular senescence, and apoptosis. Erlotinib potently inhibited the (auto)phosphorylation of mitogen-activated protein kinase 14 (MAPK14, best known as p38(MAPK)) and SRC family kinases (SFKs). If combined with the administration of ATRA or VD, the inhibition of p38(MAPK) or SFKs with specific pharmacological agents mimicked the pro-differentiation activity of erlotinib. These data were obtained with 2 distinct AML cell lines (HL-60 and MOLM-13 cells) and could be confirmed on primary leukemic blasts isolated from the circulation of AML patients. Altogether, these findings point to a new regimen for the treatment of AML, in which naturally occurring pro-differentiation agents (ATRA or VD) may be combined with EGFR inhibitors.
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Affiliation(s)
- Elodie Lainey
- INSERM; U848; Villejuif, France; Gustave Roussy; Villejuif, France; Université Paris Sud/Paris XI; Le Kremlin Bicêtre, France; Hôpital Robert Debré; AP-HP; Paris, France
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34
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Vacchelli E, Eggermont A, Sautès-Fridman C, Galon J, Zitvogel L, Kroemer G, Galluzzi L. Trial Watch: Toll-like receptor agonists for cancer therapy. Oncoimmunology 2013; 2:e25238. [PMID: 24083080 PMCID: PMC3782517 DOI: 10.4161/onci.25238] [Citation(s) in RCA: 117] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2013] [Accepted: 05/31/2013] [Indexed: 12/19/2022] Open
Abstract
Toll-like receptors (TLRs) have long been known for their ability to initiate innate immune responses upon exposure to conserved microbial components such as lipopolysaccharide (LPS) and double-stranded RNA. More recently, this family of pattern recognition receptors has been attributed a critical role in the elicitation of anticancer immune responses, raising interest in the development of immunochemotherapeutic regimens based on natural or synthetic TLR agonists. In spite of such an intense wave of preclinical and clinical investigation, only three TLR agonists are currently licensed by FDA for use in cancer patients: bacillus Calmette–Guérin (BCG), an attenuated strain of Mycobacterium bovis that operates as a mixed TLR2/TLR4 agonist; monophosphoryl lipid A (MPL), a derivative of Salmonella minnesota that functions as a potent agonist of TLR4; and imiquimod, a synthetic imidazoquinoline that activates TLR7. One year ago, in the August and September issues of OncoImmunology, we described the main biological features of TLRs and discussed the progress of clinical studies evaluating the safety and therapeutic potential of TLR agonists in cancer patients. Here, we summarize the latest developments in this exciting area of research, focusing on preclinical studies that have been published during the last 13 mo and clinical trials launched in the same period to investigate the antineoplastic activity of TLR agonists.
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Affiliation(s)
- Erika Vacchelli
- Institut Gustave Roussy; Villejuif, France ; Université Paris-Sud/Paris XI; Le Kremlin-Bicêtre; Paris, France ; INSERM, U848; Villejuif, France
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35
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Vacchelli E, Eggermont A, Fridman WH, Galon J, Zitvogel L, Kroemer G, Galluzzi L. Trial Watch: Immunostimulatory cytokines. Oncoimmunology 2013; 2:e24850. [PMID: 24073369 PMCID: PMC3782010 DOI: 10.4161/onci.24850] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2013] [Accepted: 04/29/2013] [Indexed: 12/30/2022] Open
Abstract
During the past two decades, the notion that cancer would merely constitute a cell-intrinsic disease has gradually been complemented by a model postulating that the immune system plays a relevant role during all stages of oncogenesis and tumor progression. Along with this conceptual shift, several strategies have been devised to stimulate tumor-specific immune responses, including relatively unselective approaches such as the systemic administration of adjuvants or immunomodulatory cytokines. One year ago, in the July issue of OncoImmunology, we described the main biological features of this large group of proteins and discussed the progress of ongoing clinical studies evaluating their safety and therapeutic potential in cancer patients. Here, we summarize the latest developments in this area of clinical research, focusing on high impact studies that have been published during the last 13 mo and clinical trials launched in the same period to investigate which cytokines can be employed as safe and efficient immunostimulatory interventions against cancer.
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Affiliation(s)
- Erika Vacchelli
- Institut Gustave Roussy; Villejuif, France ; Université Paris-Sud/Paris XI; Le Kremlin-Bicêtre; Paris, France ; INSERM, U848; Villejuif, France
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36
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Boilève A, Senovilla L, Vitale I, Lissa D, Martins I, Métivier D, van den Brink S, Clevers H, Galluzzi L, Castedo M, Kroemer G. Immunosurveillance against tetraploidization-induced colon tumorigenesis. Cell Cycle 2013; 12:473-9. [PMID: 23324343 DOI: 10.4161/cc.23369] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Circumstantial evidence suggests that colon carcinogenesis can ensue the transient tetraploidization of (pre-)malignant cells. In line with this notion, the tumor suppressors APC and TP53, both of which are frequently inactivated in colon cancer, inhibit tetraploidization in vitro and in vivo. Here, we show that-contrarily to their wild-type counterparts- Tp53 (-/-) colonocytes are susceptible to drug-induced or spontaneous tetraploidization in vitro. Colon organoids generated from tetraploid Tp53 (-/-) cells exhibit a close-to-normal morphology as compared to their diploid Tp53 (-/-) counterparts, yet the colonocytes constituting these organoids are characterized by an increased cell size and an elevated expression of the immunostimulatory protein calreticulin on the cell surface. The subcutaneous injection of tetraploid Tp53 (-/-) colon organoids led to the generation of proliferating tumors in immunodeficient, but not immunocompetent, mice. Thus, tetraploid Tp53 (-/-) colonocytes fail to survive in immunocompetent mice and develop neoplastic lesions in immunocompromised settings only. These results suggest that tetraploidy is particularly oncogenic in the context of deficient immunosurveillance.
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37
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Lainey E, Sébert M, Thépot S, Scoazec M, Bouteloup C, Leroy C, De Botton S, Galluzzi L, Fenaux P, Kroemer G. Erlotinib antagonizes ABC transporters in acute myeloid leukemia. Cell Cycle 2012; 11:4079-92. [PMID: 23095522 DOI: 10.4161/cc.22382] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
Erlotinib was originally developed as an epidermal growth factor receptor (EGFR)-specific inhibitor for the treatment of solid malignancies, yet also exerts significant EGFR-independent antileukemic effects in vitro and in vivo. The molecular mechanisms underlying the clinical antileukemic activity of erlotinib as a standalone agent have not yet been precisely elucidated. Conversely, in preclinical settings, erlotinib has been shown to inhibit the constitutive activation of SRC kinases and mTOR, as well as to synergize with the DNA methyltransferase inhibitor azacytidine (a reference therapeutic for a subset of leukemia patients) by promoting its intracellular accumulation. Here, we show that both erlotinib and gefitinib (another EGFR inhibitor) inhibit transmembrane transporters of the ATP-binding cassette (ABC) family, including P-glycoprotein (P-gp), multidrug resistance-associated proteins (MRPs) and breast cancer resistance protein (BCRP), also in acute myeloid leukemia (AML) cells that do not overexpress these pumps. Thus, inhibition of drug efflux by erlotinib and gefitinib selectively exacerbated (in a synergistic or additive fashion) the cytotoxic response of KG-1 cells to chemotherapeutic agents that are normally extruded by ABC transporters (e.g., doxorubicin and etoposide). Erlotinib limited drug export via ABC transporters by multiple mechanisms, including the downregulation of surface-exposed pumps and the modulation of their ATPase activity. The effects of erlotinib on drug efflux and its chemosensitization profile persisted in patient-derived CD34+ cells, suggesting that erlotinib might be particularly efficient in antagonizing leukemic (stem cell) subpopulations, irrespective of whether they exhibit or not increased drug efflux via ABC transporters.
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