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Liu C, Mei Y, Yang H, Zhang Q, Zheng K, Zhang P, Ding C. Ratiometric Fluorescent Probe for Real-Time Detection of β-Galactosidase Activity in Lysosomes and Its Application in Drug-Induced Senescence Imaging. Anal Chem 2024. [PMID: 38315820 DOI: 10.1021/acs.analchem.3c05896] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2024]
Abstract
Senescence is an important biological process, which leads to the gradual degradation of its physiological function and increases morbidity and mortality. Herein, a novel ratiometric fluorescent probe (P1) was constructed by using benzothiazolyl acetonitrile dye as fluorophore, exhibiting significantly enhanced blue-shifted emission to indicate the activity of β-galactosidase (β-gal), a commonly used biomarker for the detection of senescent cells. After incubation with β-gal, the excimer emission of P1 at 620 nm was weakened, while the emission at 533 nm was significantly enhanced, forming an obvious ratiometric probe with high sensitivity and low detection limit (2.7 mU·mL-1). More importantly, probe P1 can locate lysosomes accurately, allowing us to monitor the emergence of living cell senescence in real time. P1 was successfully used to detect β-gal activity in PC-12 cells, Hep G2 cells, and RAW 264.7 cells. It showed strong green fluorescence signal in senescent cells and red fluorescence signal in normal cells, indicating that it can detect endogenous senescence-related β-gal content in living cells. For in vivo drug-induced senescence imaging, after 5 weeks of injection of D-galactose or hydroxyurea, the mice showed significant fluorescence enhancement in specific channels to indicate the activity of β-gal in vivo. At the same time, the senescence of cell-specific organs and skin tissues at the organ level were also detected, which proved that the drug-induced senescence of brain, skin, and muscle tissues was the most serious. These results supported the important application value of P1 in senescence biomedical research.
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Affiliation(s)
- Chengmei Liu
- Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science, MOE; Shandong Key Laboratory of Biochemical Analysis; Key Laboratory of Analytical Chemistry for Life Science in Universities of Shandong; College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, P. R. China
| | - Yu Mei
- Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science, MOE; Shandong Key Laboratory of Biochemical Analysis; Key Laboratory of Analytical Chemistry for Life Science in Universities of Shandong; College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, P. R. China
| | - Haifeng Yang
- Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science, MOE; Shandong Key Laboratory of Biochemical Analysis; Key Laboratory of Analytical Chemistry for Life Science in Universities of Shandong; College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, P. R. China
| | - Qian Zhang
- Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science, MOE; Shandong Key Laboratory of Biochemical Analysis; Key Laboratory of Analytical Chemistry for Life Science in Universities of Shandong; College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, P. R. China
| | - Ke Zheng
- Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science, MOE; Shandong Key Laboratory of Biochemical Analysis; Key Laboratory of Analytical Chemistry for Life Science in Universities of Shandong; College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, P. R. China
| | - Peng Zhang
- Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science, MOE; Shandong Key Laboratory of Biochemical Analysis; Key Laboratory of Analytical Chemistry for Life Science in Universities of Shandong; College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, P. R. China
| | - Caifeng Ding
- Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science, MOE; Shandong Key Laboratory of Biochemical Analysis; Key Laboratory of Analytical Chemistry for Life Science in Universities of Shandong; College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, P. R. China
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2
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Extrachromosomal circular DNA: biogenesis, structure, functions and diseases. Signal Transduct Target Ther 2022; 7:342. [PMID: 36184613 PMCID: PMC9527254 DOI: 10.1038/s41392-022-01176-8] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Revised: 08/14/2022] [Accepted: 09/01/2022] [Indexed: 11/08/2022] Open
Abstract
Extrachromosomal circular DNA (eccDNA), ranging in size from tens to millions of base pairs, is independent of conventional chromosomes. Recently, eccDNAs have been considered an unanticipated major source of somatic rearrangements, contributing to genomic remodeling through chimeric circularization and reintegration of circular DNA into the linear genome. In addition, the origin of eccDNA is considered to be associated with essential chromatin-related events, including the formation of super-enhancers and DNA repair machineries. Moreover, our understanding of the properties and functions of eccDNA has continuously and greatly expanded. Emerging investigations demonstrate that eccDNAs serve as multifunctional molecules in various organisms during diversified biological processes, such as epigenetic remodeling, telomere trimming, and the regulation of canonical signaling pathways. Importantly, its special distribution potentiates eccDNA as a measurable biomarker in many diseases, especially cancers. The loss of eccDNA homeostasis facilitates tumor initiation, malignant progression, and heterogeneous evolution in many cancers. An in-depth understanding of eccDNA provides novel insights for precision cancer treatment. In this review, we summarized the discovery history of eccDNA, discussed the biogenesis, characteristics, and functions of eccDNA. Moreover, we emphasized the role of eccDNA during tumor pathogenesis and malignant evolution. Therapeutically, we summarized potential clinical applications that target aberrant eccDNA in multiple diseases.
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3
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Zanotti S, Decaesteker B, Vanhauwaert S, De Wilde B, De Vos WH, Speleman F. Cellular senescence in neuroblastoma. Br J Cancer 2022; 126:1529-1538. [PMID: 35197583 PMCID: PMC9130206 DOI: 10.1038/s41416-022-01755-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Revised: 01/14/2022] [Accepted: 02/10/2022] [Indexed: 12/14/2022] Open
Abstract
Neuroblastoma is a tumour that arises from the sympathoadrenal lineage occurring predominantly in children younger than five years. About half of the patients are diagnosed with high-risk tumours and undergo intensive multi-modal therapy. The success rate of current treatments for high-risk neuroblastoma is disappointingly low and survivors suffer from multiple therapy-related long-term side effects. Most chemotherapeutics drive cancer cells towards cell death or senescence. Senescence has long been considered to represent a terminal non-proliferative state and therefore an effective barrier against tumorigenesis. This dogma, however, has been challenged by recent observations that infer a much more dynamic and reversible nature for this process, which may have implications for the efficacy of therapy-induced senescence-oriented treatment strategies. Neuroblastoma cells in a dormant, senescent-like state may escape therapy, whilst their senescence-associated secretome may promote inflammation and invasiveness, potentially fostering relapse. Conversely, due to its distinct molecular identity, senescence may also represent an opportunity for the development of novel (combination) therapies. However, the limited knowledge on the molecular dynamics and diversity of senescence signatures demands appropriate models to study this process in detail. This review summarises the molecular knowledge about cellular senescence in neuroblastoma and investigates current and future options towards therapeutic exploration.
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Affiliation(s)
- Sofia Zanotti
- grid.5284.b0000 0001 0790 3681Laboratory of Cell Biology and Histology, Department of Veterinary Sciences, University of Antwerp, Universiteitsplein 1, Antwerp, 2610 Belgium ,grid.5342.00000 0001 2069 7798Department of Biomolecular Medicine, Ghent University, Corneel Heymanslaan 10, Ghent, 9000 Belgium ,grid.510942.bCancer Research Institute Ghent (CRIG), Ghent, 9000 Belgium
| | - Bieke Decaesteker
- grid.5342.00000 0001 2069 7798Department of Biomolecular Medicine, Ghent University, Corneel Heymanslaan 10, Ghent, 9000 Belgium ,grid.510942.bCancer Research Institute Ghent (CRIG), Ghent, 9000 Belgium
| | - Suzanne Vanhauwaert
- grid.5342.00000 0001 2069 7798Department of Biomolecular Medicine, Ghent University, Corneel Heymanslaan 10, Ghent, 9000 Belgium ,grid.510942.bCancer Research Institute Ghent (CRIG), Ghent, 9000 Belgium
| | - Bram De Wilde
- grid.5342.00000 0001 2069 7798Department of Biomolecular Medicine, Ghent University, Corneel Heymanslaan 10, Ghent, 9000 Belgium ,grid.5342.00000 0001 2069 7798Department of Internal Medicine and Pediatrics, Ghent University, Corneel Heymanslaan 10, Ghent, 9000 Belgium ,grid.410566.00000 0004 0626 3303Department of Pediatric Hematology Oncology and Stem Cell Transplantation, Ghent University Hospital, Ghent, 9000 Belgium
| | - Winnok H. De Vos
- grid.5284.b0000 0001 0790 3681Laboratory of Cell Biology and Histology, Department of Veterinary Sciences, University of Antwerp, Universiteitsplein 1, Antwerp, 2610 Belgium
| | - Frank Speleman
- Department of Biomolecular Medicine, Ghent University, Corneel Heymanslaan 10, Ghent, 9000, Belgium. .,Cancer Research Institute Ghent (CRIG), Ghent, 9000, Belgium.
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4
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van Leen E, Brückner L, Henssen AG. The genomic and spatial mobility of extrachromosomal DNA and its implications for cancer therapy. Nat Genet 2022; 54:107-114. [PMID: 35145302 DOI: 10.1038/s41588-021-01000-z] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2021] [Accepted: 12/09/2021] [Indexed: 12/25/2022]
Abstract
Extrachromosomal DNA (ecDNA) amplification has been observed in at least 30 different cancer types and is associated with worse patient outcomes. This has been linked to increased oncogene dosage because both oncogenes and associated enhancers can occupy ecDNA. New data challenge the view that only oncogene dosage is affected by ecDNA, and raises the possibility that ecDNA could disrupt genome-wide gene expression. Recent investigations suggest that ecDNA localizes to specialized nuclear bodies (hubs) in which they can act in trans as ectopic enhancers for genes on other ecDNA or chromosomes. Moreover, ecDNA can reintegrate into the genome, possibly further disrupting the gene regulatory landscape in tumor cells. In this Perspective, we discuss the emerging properties of ecDNA and highlight promising avenues to exploit this new knowledge for the development of ecDNA-directed therapies for cancer.
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Affiliation(s)
- Eric van Leen
- Department of Pediatric Oncology/Hematology, Charité-Universitätsmedizin Berlin, Berlin, Germany.,Experimental and Clinical Research Center of the MDC and Charité Berlin, Berlin, Germany
| | - Lotte Brückner
- Max-Delbrück-Centrum für Molekulare Medizin, Berlin, Germany
| | - Anton G Henssen
- Department of Pediatric Oncology/Hematology, Charité-Universitätsmedizin Berlin, Berlin, Germany. .,Experimental and Clinical Research Center of the MDC and Charité Berlin, Berlin, Germany. .,Max-Delbrück-Centrum für Molekulare Medizin, Berlin, Germany. .,Berlin Institute of Health, Berlin, Germany. .,German Cancer Consortium, Partner Site Berlin, and German Cancer Research Center, Heidelberg, Germany.
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5
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Mechanisms of Hydroxyurea-Induced Cellular Senescence: An Oxidative Stress Connection? OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2021; 2021:7753857. [PMID: 34707779 PMCID: PMC8545575 DOI: 10.1155/2021/7753857] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Revised: 08/09/2021] [Accepted: 09/25/2021] [Indexed: 01/10/2023]
Abstract
Hydroxyurea (HU) is a water-soluble antiproliferative agent used for decades in neoplastic and nonneoplastic conditions. HU is considered an essential medicine because of its cytoreduction functions. HU is an antimetabolite that inhibits ribonucleotide reductase, which causes a depletion of the deoxyribonucleotide pool and dramatically reduces cell proliferation. The proliferation arrest, depending on drug concentration and exposure, may promote a cellular senescence phenotype associated with cancer cell therapy resistance and inflammation, influencing neighboring cell functions, immunosuppression, and potential cancer relapse. HU can induce cellular senescence in both healthy and transformed cells in vitro, in part, because of increased reactive oxygen species (ROS). Here, we analyze the main molecular mechanisms involved in cytotoxic/genotoxic HU function, the potential to increase intracellular ROS levels, and the principal features of cellular senescence induction. Understanding the mechanisms involved in HU's ability to induce cellular senescence may help to improve current chemotherapy strategies and control undesirable treatment effects in cancer patients and other diseases.
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6
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Lazic D, Kromp F, Rifatbegovic F, Repiscak P, Kirr M, Mivalt F, Halbritter F, Bernkopf M, Bileck A, Ussowicz M, Ambros IM, Ambros PF, Gerner C, Ladenstein R, Ostalecki C, Taschner-Mandl S. Landscape of Bone Marrow Metastasis in Human Neuroblastoma Unraveled by Transcriptomics and Deep Multiplex Imaging. Cancers (Basel) 2021; 13:cancers13174311. [PMID: 34503120 PMCID: PMC8431445 DOI: 10.3390/cancers13174311] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Revised: 08/18/2021] [Accepted: 08/23/2021] [Indexed: 11/16/2022] Open
Abstract
While the bone marrow attracts tumor cells in many solid cancers leading to poor outcome in affected patients, comprehensive analyses of bone marrow metastases have not been performed on a single-cell level. We here set out to capture tumor heterogeneity and unravel microenvironmental changes in neuroblastoma, a solid cancer with bone marrow involvement. To this end, we employed a multi-omics data mining approach to define a multiplex imaging panel and developed DeepFLEX, a pipeline for subsequent multiplex image analysis, whereby we constructed a single-cell atlas of over 35,000 disseminated tumor cells (DTCs) and cells of their microenvironment in the metastatic bone marrow niche. Further, we independently profiled the transcriptome of a cohort of 38 patients with and without bone marrow metastasis. Our results revealed vast diversity among DTCs and suggest that FAIM2 can act as a complementary marker to capture DTC heterogeneity. Importantly, we demonstrate that malignant bone marrow infiltration is associated with an inflammatory response and at the same time the presence of immuno-suppressive cell types, most prominently an immature neutrophil/granulocytic myeloid-derived suppressor-like cell type. The presented findings indicate that metastatic tumor cells shape the bone marrow microenvironment, warranting deeper investigations of spatio-temporal dynamics at the single-cell level and their clinical relevance.
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Affiliation(s)
- Daria Lazic
- St. Anna Children’s Cancer Research Institute (CCRI), 1090 Vienna, Austria; (D.L.); (F.K.); (F.R.); (P.R.); (F.M.); (F.H.); (M.B.); (I.M.A.); (P.F.A.); (R.L.)
| | - Florian Kromp
- St. Anna Children’s Cancer Research Institute (CCRI), 1090 Vienna, Austria; (D.L.); (F.K.); (F.R.); (P.R.); (F.M.); (F.H.); (M.B.); (I.M.A.); (P.F.A.); (R.L.)
- Software Competence Center Hagenberg (SCCH), 4232 Hagenberg, Austria
| | - Fikret Rifatbegovic
- St. Anna Children’s Cancer Research Institute (CCRI), 1090 Vienna, Austria; (D.L.); (F.K.); (F.R.); (P.R.); (F.M.); (F.H.); (M.B.); (I.M.A.); (P.F.A.); (R.L.)
| | - Peter Repiscak
- St. Anna Children’s Cancer Research Institute (CCRI), 1090 Vienna, Austria; (D.L.); (F.K.); (F.R.); (P.R.); (F.M.); (F.H.); (M.B.); (I.M.A.); (P.F.A.); (R.L.)
| | - Michael Kirr
- Department of Dermatology, University Hospital Erlangen, 91054 Erlangen, Germany; (M.K.); (C.O.)
| | - Filip Mivalt
- St. Anna Children’s Cancer Research Institute (CCRI), 1090 Vienna, Austria; (D.L.); (F.K.); (F.R.); (P.R.); (F.M.); (F.H.); (M.B.); (I.M.A.); (P.F.A.); (R.L.)
| | - Florian Halbritter
- St. Anna Children’s Cancer Research Institute (CCRI), 1090 Vienna, Austria; (D.L.); (F.K.); (F.R.); (P.R.); (F.M.); (F.H.); (M.B.); (I.M.A.); (P.F.A.); (R.L.)
| | - Marie Bernkopf
- St. Anna Children’s Cancer Research Institute (CCRI), 1090 Vienna, Austria; (D.L.); (F.K.); (F.R.); (P.R.); (F.M.); (F.H.); (M.B.); (I.M.A.); (P.F.A.); (R.L.)
| | - Andrea Bileck
- Department of Analytical Chemistry, Faculty of Chemistry, University of Vienna, 1090 Vienna, Austria; (A.B.); (C.G.)
| | - Marek Ussowicz
- Department and Clinic of Pediatric Oncology, Hematology and Bone Marrow, Transplantation, Wroclaw Medical University, 50-556 Wroclaw, Poland;
| | - Inge M. Ambros
- St. Anna Children’s Cancer Research Institute (CCRI), 1090 Vienna, Austria; (D.L.); (F.K.); (F.R.); (P.R.); (F.M.); (F.H.); (M.B.); (I.M.A.); (P.F.A.); (R.L.)
| | - Peter F. Ambros
- St. Anna Children’s Cancer Research Institute (CCRI), 1090 Vienna, Austria; (D.L.); (F.K.); (F.R.); (P.R.); (F.M.); (F.H.); (M.B.); (I.M.A.); (P.F.A.); (R.L.)
| | - Christopher Gerner
- Department of Analytical Chemistry, Faculty of Chemistry, University of Vienna, 1090 Vienna, Austria; (A.B.); (C.G.)
| | - Ruth Ladenstein
- St. Anna Children’s Cancer Research Institute (CCRI), 1090 Vienna, Austria; (D.L.); (F.K.); (F.R.); (P.R.); (F.M.); (F.H.); (M.B.); (I.M.A.); (P.F.A.); (R.L.)
| | - Christian Ostalecki
- Department of Dermatology, University Hospital Erlangen, 91054 Erlangen, Germany; (M.K.); (C.O.)
| | - Sabine Taschner-Mandl
- St. Anna Children’s Cancer Research Institute (CCRI), 1090 Vienna, Austria; (D.L.); (F.K.); (F.R.); (P.R.); (F.M.); (F.H.); (M.B.); (I.M.A.); (P.F.A.); (R.L.)
- Correspondence: ; Tel.: +43-1-40470-4050
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7
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Nolan JC, Salvucci M, Carberry S, Barat A, Segura MF, Fenn J, Prehn JHM, Stallings RL, Piskareva O. A Context-Dependent Role for MiR-124-3p on Cell Phenotype, Viability and Chemosensitivity in Neuroblastoma in vitro. Front Cell Dev Biol 2020; 8:559553. [PMID: 33330445 PMCID: PMC7714770 DOI: 10.3389/fcell.2020.559553] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Accepted: 10/30/2020] [Indexed: 02/06/2023] Open
Abstract
Neuroblastoma (NB) is a neural crest-derived tumor, which develops before birth or in early childhood, with metastatic dissemination typically preceding diagnosis. Tumors are characterized by a highly heterogeneous combination of cellular phenotypes demonstrating varying degrees of differentiation along different lineage pathways, and possessing distinct super-enhancers and core regulatory circuits, thereby leading to highly varied malignant potential and divergent clinical outcomes. Cytoskeletal reorganization is fundamental to cellular transformations, including the processes of cellular differentiation and epithelial to mesenchymal transition (EMT), previously reported by our lab and others to coincide with chemotherapy resistance and enhanced metastatic ability of tumor cells. This study set out to investigate the ability of the neuronal miR-124-3p to reverse the cellular transformation associated with drug resistance development and assess the anti-oncogenic role of this miRNA in in vitro models of drug-resistant adrenergic (ADRN) and mesenchymal (MES) neuroblastoma cell lines. Low expression of miR-124-3p in a cohort of neuroblastomas was significantly associated with poor overall and progression-free patient survival. Over-expression of miR-124-3p in vitro inhibited cell viability through the promotion of cell cycle arrest and induction of apoptosis in addition to sensitizing drug-resistant cells to chemotherapeutics in a panel of morphologically distinct neuroblastoma cell lines. Finally, we describe miR-124-3p direct targeting and repression of key up-regulated cytoskeletal genes including MYH9, ACTN4 and PLEC and the reversal of the resistance-associated EMT and enhanced invasive capacity previously reported in our in vitro model (SK-N-ASCis24).
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Affiliation(s)
- John C Nolan
- School of Pharmacy and Biomolecular Sciences, RCSI University of Medicine and Health Sciences, Dublin, Ireland.,National Children's Research Centre, Our Lady's Children's Hospital Crumlin, Dublin, Ireland
| | - Manuela Salvucci
- Department of Physiology and Medical Physics and RCSI Centre for Systems Medicine, RCSI University of Medicine and Health Sciences, Dublin, Ireland
| | - Steven Carberry
- Department of Physiology and Medical Physics and RCSI Centre for Systems Medicine, RCSI University of Medicine and Health Sciences, Dublin, Ireland
| | - Ana Barat
- Department of Physiology and Medical Physics and RCSI Centre for Systems Medicine, RCSI University of Medicine and Health Sciences, Dublin, Ireland
| | - Miguel F Segura
- Group of Translational Research in Child and Adolescent Cancer, Vall d'Hebron Research Institute, Barcelona, Spain
| | - Justine Fenn
- School of Pharmacy and Biomolecular Sciences, RCSI University of Medicine and Health Sciences, Dublin, Ireland
| | - Jochen H M Prehn
- Department of Physiology and Medical Physics and RCSI Centre for Systems Medicine, RCSI University of Medicine and Health Sciences, Dublin, Ireland
| | - Raymond L Stallings
- School of Pharmacy and Biomolecular Sciences, RCSI University of Medicine and Health Sciences, Dublin, Ireland.,National Children's Research Centre, Our Lady's Children's Hospital Crumlin, Dublin, Ireland
| | - Olga Piskareva
- School of Pharmacy and Biomolecular Sciences, RCSI University of Medicine and Health Sciences, Dublin, Ireland.,National Children's Research Centre, Our Lady's Children's Hospital Crumlin, Dublin, Ireland.,Department of Anatomy and Regenerative Medicine, RCSI University of Medicine and Health Sciences, Dublin, Ireland
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8
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Saleh T, Bloukh S, Carpenter VJ, Alwohoush E, Bakeer J, Darwish S, Azab B, Gewirtz DA. Therapy-Induced Senescence: An "Old" Friend Becomes the Enemy. Cancers (Basel) 2020; 12:cancers12040822. [PMID: 32235364 PMCID: PMC7226427 DOI: 10.3390/cancers12040822] [Citation(s) in RCA: 154] [Impact Index Per Article: 38.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2020] [Revised: 03/21/2020] [Accepted: 03/25/2020] [Indexed: 01/10/2023] Open
Abstract
For the past two decades, cellular senescence has been recognized as a central component of the tumor cell response to chemotherapy and radiation. Traditionally, this form of senescence, termed Therapy-Induced Senescence (TIS), was linked to extensive nuclear damage precipitated by classical genotoxic chemotherapy. However, a number of other forms of therapy have also been shown to induce senescence in tumor cells independently of direct genomic damage. This review attempts to provide a comprehensive summary of both conventional and targeted anticancer therapeutics that have been shown to induce senescence in vitro and in vivo. Still, the utility of promoting senescence as a therapeutic endpoint remains under debate. Since senescence represents a durable form of growth arrest, it might be argued that senescence is a desirable outcome of cancer therapy. However, accumulating evidence suggesting that cells have the capacity to escape from TIS would support an alternative conclusion, that senescence provides an avenue whereby tumor cells can evade the potentially lethal action of anticancer drugs, allowing the cells to enter a temporary state of dormancy that eventually facilitates disease recurrence, often in a more aggressive state. Furthermore, TIS is now strongly connected to tumor cell remodeling, potentially to tumor dormancy, acquiring more ominous malignant phenotypes and accounts for several untoward adverse effects of cancer therapy. Here, we argue that senescence represents a barrier to effective anticancer treatment, and discuss the emerging efforts to identify and exploit agents with senolytic properties as a strategy for elimination of the persistent residual surviving tumor cell population, with the goal of mitigating the tumor-promoting influence of the senescent cells and to thereby reduce the likelihood of cancer relapse.
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Affiliation(s)
- Tareq Saleh
- Department of Basic Medical Sciences, Faculty of Medicine, The Hashemite University, Zarqa 13133, Jordan; (T.S.); (S.D.)
| | - Sarah Bloukh
- Department of Pathology, Microbiology and Forensic Medicine, School of Medicine, The University of Jordan, Amman 11942, Jordan; (S.B.); (E.A.); (J.B.); (B.A.)
| | - Valerie J. Carpenter
- Department of Pharmacology and Toxicology, School of Medicine, Virginia Commonwealth University, Richmond, VA 23284, USA;
| | - Enas Alwohoush
- Department of Pathology, Microbiology and Forensic Medicine, School of Medicine, The University of Jordan, Amman 11942, Jordan; (S.B.); (E.A.); (J.B.); (B.A.)
| | - Jomana Bakeer
- Department of Pathology, Microbiology and Forensic Medicine, School of Medicine, The University of Jordan, Amman 11942, Jordan; (S.B.); (E.A.); (J.B.); (B.A.)
| | - Sarah Darwish
- Department of Basic Medical Sciences, Faculty of Medicine, The Hashemite University, Zarqa 13133, Jordan; (T.S.); (S.D.)
| | - Belal Azab
- Department of Pathology, Microbiology and Forensic Medicine, School of Medicine, The University of Jordan, Amman 11942, Jordan; (S.B.); (E.A.); (J.B.); (B.A.)
- Department of Human and Molecular Genetics, School of Medicine, Virginia Commonwealth University, Richmond, VA 23284, USA
| | - David A. Gewirtz
- Department of Pharmacology and Toxicology, School of Medicine, Virginia Commonwealth University, Richmond, VA 23284, USA;
- Correspondence:
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9
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Examining Cardiomyocyte Dysfunction Using Acute Chemical Induction of an Ageing Phenotype. Int J Mol Sci 2019; 21:ijms21010197. [PMID: 31892165 PMCID: PMC6982016 DOI: 10.3390/ijms21010197] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2019] [Revised: 12/21/2019] [Accepted: 12/23/2019] [Indexed: 11/18/2022] Open
Abstract
Much effort is focussed on understanding the structural and functional changes in the heart that underlie age-dependent deterioration of cardiac performance. Longitudinal studies, using aged animals, have pinpointed changes occurring to the contractile myocytes within the heart. However, whilst longitudinal studies are important, other experimental approaches are being advanced that can recapitulate the phenotypic changes seen during ageing. This study investigated the induction of an ageing cardiomyocyte phenotypic change by incubation of cells with hydroxyurea for several days ex vivo. Hydroxyurea incubation has been demonstrated to phenocopy age- and senescence-induced changes in neurons, but its utility for ageing studies with cardiac cells has not been examined. Incubation of neonatal rat ventricular myocytes with hydroxyurea for up to 7 days replicated specific aspects of cardiac ageing including reduced systolic calcium responses, increased alternans and a lesser ability of the cells to follow electrical pacing. Additional functional and structural changes were observed within the myocytes that pointed to ageing-like remodelling, including lipofuscin granule accumulation, reduced mitochondrial membrane potential, increased production of reactive oxygen species, and altered ultrastructure, such as mitochondria with disrupted cristae and disorganised myofibres. These data highlight the utility of alternative approaches for exploring cellular ageing whilst avoiding the costs and co-morbid factors that can affect longitudinal studies.
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10
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Bjelica S, Diklić M, Đikić D, Kovačić M, Subotički T, Mitrović-Ajtić O, Radojković M, Čokić VP, Santibanez JF. Hydroxyurea-induced senescent peripheral blood mesenchymal stromal cells inhibit bystander cell proliferation of JAK2V617F-positive human erythroleukemia cells. FEBS J 2019; 286:3647-3663. [PMID: 31090259 DOI: 10.1111/febs.14927] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2018] [Revised: 04/15/2019] [Accepted: 05/13/2019] [Indexed: 12/16/2022]
Abstract
Hydroxyurea (HU) is a nonalkylating antineoplastic agent used in the treatment of hematological malignancies. HU is a DNA replication stress inducer, and as such, it may induce a premature senescence-like cell phenotype; however, its repercussion on bystander cell proliferation has not been revealed so far. Our results indicate that HU strongly inhibited peripheral blood mesenchymal stromal cells (PBMSC) proliferation by cell cycle arrest in S phase, and that, consequently, PBMSC acquire senescence-related phenotypical changes. HU-treated PBMSC display increased senescence-associated β-galactosidase levels and p16INK4 expression, as well as DNA damage response and genotoxic effects, evidenced by expression of γH2A.X and micronuclei. Moreover, HU-induced PBMSC senescence is mediated by increased reactive oxygen species (ROS) levels, as demonstrated by the inhibition of senescence markers in the presence of ROS scavenger N-acetylcysteine and NADPH oxidase inhibitor Apocynin. To determine the HU-induced bystander effect, we used the JAK2V617F-positive human erythroleukemia 92.1.7 (HEL) cells. Co-culture with HU-induced senescent PBMSC (HU-S-PBMSC) strongly inhibited bystander HEL cell proliferation, and this effect is mediated by both ROS and transforming growth factor (TGF)-β expression. Besides induction of premature senescence, HU educates PBMSC toward an inhibitory phenotype of HEL cell proliferation. Finally, our study contributes to the understanding of the role of HU-induced PBMSC senescence as a potential adjuvant in hematological malignancy therapies.
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Affiliation(s)
- Sunčica Bjelica
- Group for Molecular Oncology, Institute for Medical Research, University of Belgrade, Serbia
| | - Miloš Diklić
- Group for Molecular Oncology, Institute for Medical Research, University of Belgrade, Serbia
| | - Dragoslava Đikić
- Group for Molecular Oncology, Institute for Medical Research, University of Belgrade, Serbia
| | - Marijana Kovačić
- Group for Molecular Oncology, Institute for Medical Research, University of Belgrade, Serbia
| | - Tijana Subotički
- Group for Molecular Oncology, Institute for Medical Research, University of Belgrade, Serbia
| | - Olivera Mitrović-Ajtić
- Group for Molecular Oncology, Institute for Medical Research, University of Belgrade, Serbia
| | - Milica Radojković
- Department of Haematology, Clinical Hospital Centre Dragisa Misovic, Belgrade, Serbia.,Faculty of Medicine, University of Belgrade, Serbia
| | - Vladan P Čokić
- Group for Molecular Oncology, Institute for Medical Research, University of Belgrade, Serbia
| | - Juan F Santibanez
- Group for Molecular Oncology, Institute for Medical Research, University of Belgrade, Serbia.,Centro Integrativo de Biología y Química Aplicada (CIBQA), Universidad Bernardo O'Higgins, Santiago, Chile
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11
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Reinhardt S, Schuck F, Stoye N, Hartmann T, Grimm MOW, Pflugfelder G, Endres K. Transcriptional repression of the ectodomain sheddase ADAM10 by TBX2 and potential implication for Alzheimer's disease. Cell Mol Life Sci 2019; 76:1005-1025. [PMID: 30599067 PMCID: PMC11105458 DOI: 10.1007/s00018-018-2998-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2018] [Revised: 12/11/2018] [Accepted: 12/12/2018] [Indexed: 12/15/2022]
Abstract
BACKGROUND The ADAM10-mediated cleavage of transmembrane proteins regulates cellular processes such as proliferation or migration. Substrate cleavage by ADAM10 has also been implicated in pathological situations such as cancer or Morbus Alzheimer. Therefore, identifying endogenous molecules, which modulate the amount and consequently the activity of ADAM10, might contribute to a deeper understanding of the enzyme's role in both, physiology and pathology. METHOD To elucidate the underlying cellular mechanism of the TBX2-mediated repression of ADAM10 gene expression, we performed overexpression, RNAi-mediated knockdown and pharmacological inhibition studies in the human neuroblastoma cell line SH-SY5Y. Expression analysis was conducted by e.g. real-time RT-PCR or western blot techniques. To identify the binding region of TBX2 within the ADAM10 promoter, we used luciferase reporter assay on deletion constructs and EMSA/WEMSA experiments. In addition, we analyzed a TBX2 loss-of-function Drosophila model regarding the expression of ADAM10 orthologs by qPCR. Furthermore, we quantified the mRNA level of TBX2 in post-mortem brain tissue of AD patients. RESULTS Here, we report TBX2 as a transcriptional repressor of ADAM10 gene expression: both, the DNA-binding domain and the repression domain of TBX2 were necessary to effect transcriptional repression of ADAM10 in neuronal SH-SY5Y cells. This regulatory mechanism required HDAC1 as a co-factor of TBX2. Transcriptional repression was mediated by two functional TBX2 binding sites within the core promoter sequence (- 315 to - 286 bp). Analysis of a TBX2 loss-of-function Drosophila model revealed that kuzbanian and kuzbanian-like, orthologs of ADAM10, were derepressed compared to wild type. Vice versa, analysis of cortical brain samples of AD-patients, which showed reduced ADAM10 mRNA levels, revealed a 2.5-fold elevation of TBX2, while TBX3 and TBX21 levels were not affected. CONCLUSION Our results characterize TBX2 as a repressor of ADAM10 gene expression and suggest that this regulatory interaction is conserved across tissues and species.
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Affiliation(s)
- Sven Reinhardt
- Department of Psychiatry and Psychotherapy, University Medical Center of the Johannes Gutenberg University Mainz, Untere Zahlbacher Strasse 8, 55131, Mainz, Germany
| | - Florian Schuck
- Department of Psychiatry and Psychotherapy, University Medical Center of the Johannes Gutenberg University Mainz, Untere Zahlbacher Strasse 8, 55131, Mainz, Germany
| | - Nicolai Stoye
- Department of Psychiatry and Psychotherapy, University Medical Center of the Johannes Gutenberg University Mainz, Untere Zahlbacher Strasse 8, 55131, Mainz, Germany
| | - Tobias Hartmann
- Deutsches Institut für Demenz Prävention (DIDP), Neurodegeneration and Neurobiology, Saarland University, Kirrbergerstrasse 1, 66421, Homburg, Saar, Germany
- Experimental Neurology, Saarland University, Kirrbergerstrasse 1, 66421, Homburg, Saar, Germany
| | - Marcus O W Grimm
- Deutsches Institut für Demenz Prävention (DIDP), Neurodegeneration and Neurobiology, Saarland University, Kirrbergerstrasse 1, 66421, Homburg, Saar, Germany
- Experimental Neurology, Saarland University, Kirrbergerstrasse 1, 66421, Homburg, Saar, Germany
| | - Gert Pflugfelder
- Institute of Developmental Biology and Neurobiology, Johannes Gutenberg University, Becherweg 32, 55128, Mainz, Germany
| | - Kristina Endres
- Department of Psychiatry and Psychotherapy, University Medical Center of the Johannes Gutenberg University Mainz, Untere Zahlbacher Strasse 8, 55131, Mainz, Germany.
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12
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André N, Tsai K, Carré M, Pasquier E. Metronomic Chemotherapy: Direct Targeting of Cancer Cells after all? Trends Cancer 2017; 3:319-325. [DOI: 10.1016/j.trecan.2017.03.011] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2017] [Revised: 03/25/2017] [Accepted: 03/29/2017] [Indexed: 12/22/2022]
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13
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Taschner-Mandl S, Schwarz M, Blaha J, Kauer M, Kromp F, Frank N, Rifatbegovic F, Weiss T, Ladenstein R, Hohenegger M, Ambros IM, Ambros PF. Metronomic topotecan impedes tumor growth of MYCN-amplified neuroblastoma cells in vitro and in vivo by therapy induced senescence. Oncotarget 2016; 7:3571-86. [PMID: 26657295 PMCID: PMC4823128 DOI: 10.18632/oncotarget.6527] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2015] [Accepted: 11/17/2015] [Indexed: 12/13/2022] Open
Abstract
Poor prognosis and frequent relapses are major challenges for patients with high-risk neuroblastoma (NB), especially when tumors show MYCN amplification. High-dose chemotherapy triggers apoptosis, necrosis and senescence, a cellular stress response leading to permanent proliferative arrest and a typical senescence-associated secretome (SASP). SASP components reinforce growth-arrest and act immune-stimulatory, while others are tumor-promoting. We evaluated whether metronomic, i.e. long-term, repetitive low-dose, drug treatment induces senescence in vitro and in vivo. And importantly, by using the secretome as a discriminator for beneficial versus adverse effects of senescence, drugs with a tumor-inhibiting SASP were identified. We demonstrate that metronomic application of chemotherapeutic drugs induces therapy-induced senescence, characterized by cell cycle arrest, p21WAF/CIP1 up-regulation and DNA double-strand breaks selectively in MYCN-amplified NB. Low-dose topotecan (TPT) was identified as an inducer of a favorable SASP while lacking NFKB1/p50 activation. In contrast, Bromo-deoxy-uridine induced senescent NB-cells secret a tumor-promoting SASP in a NFKB1/p50-dependent manner. Importantly, TPT-treated senescent tumor cells act growth-inhibitory in a dose-dependent manner on non-senescent tumor cells and MYCN expression is significantly reduced in vitro and in vivo. Furthermore, in a mouse xenotransplant-model for MYCN-amplified NB metronomic TPT leads to senescence selectively in tumor cells, complete or partial remission, prolonged survival and a favorable SASP. This new mode-of-action of metronomic TPT treatment, i.e. promoting a tumor-inhibiting type of senescence in MYCN-amplified tumors, is clinically relevant as metronomic regimens are increasingly implemented in therapy protocols of various cancer entities and are considered as a feasible maintenance treatment option with moderate adverse event profiles.
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Affiliation(s)
| | | | - Johanna Blaha
- CCRI, Chlidren's Cancer Research Institute, Vienna, Austria
| | | | - Florian Kromp
- CCRI, Chlidren's Cancer Research Institute, Vienna, Austria
| | - Nelli Frank
- CCRI, Chlidren's Cancer Research Institute, Vienna, Austria
| | | | - Tamara Weiss
- CCRI, Chlidren's Cancer Research Institute, Vienna, Austria
| | - Ruth Ladenstein
- CCRI, Chlidren's Cancer Research Institute, Vienna, Austria.,Department of Pediatrics, Medical University of Vienna, Vienna, Austria
| | - Martin Hohenegger
- Center for Physiology and Pharmacology, Medical University of Vienna, Vienna, Austria
| | - Inge M Ambros
- CCRI, Chlidren's Cancer Research Institute, Vienna, Austria
| | - Peter F Ambros
- CCRI, Chlidren's Cancer Research Institute, Vienna, Austria.,Department of Pediatrics, Medical University of Vienna, Vienna, Austria
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14
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Abstract
Chromosomal copy number changes are frequently associated with harmful consequences and are thought of as an underlying mechanism for the development of diseases. However, changes in copy number are observed during development and occur during normal biological processes. In this review, we highlight the causes and consequences of copy number changes in normal physiologic processes as well as cover their associations with cancer and acquired drug resistance. We discuss the permanent and transient nature of copy number gains and relate these observations to a new mechanism driving transient site-specific copy gains (TSSGs). Finally, we discuss implications of TSSGs in generating intratumoral heterogeneity and tumor evolution and how TSSGs can influence the therapeutic response in cancer.
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Affiliation(s)
- Sweta Mishra
- Massachusetts General Hospital Cancer Center and Department of Medicine, Harvard Medical School, Charlestown, Massachusetts, USA
| | - Johnathan R Whetstine
- Massachusetts General Hospital Cancer Center and Department of Medicine, Harvard Medical School, Charlestown, Massachusetts, USA
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15
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Masserot C, Liu Q, Nguyen E, Gattolliat CH, Valteau-Couanet D, Bénard J, Huber C, Ségal-Bendirdjian E. WT1 expression is inversely correlated with MYCN amplification or expression and associated with poor survival in non-MYCN-amplified neuroblastoma. Mol Oncol 2015; 10:240-52. [PMID: 26482175 DOI: 10.1016/j.molonc.2015.09.010] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2015] [Revised: 09/05/2015] [Accepted: 09/25/2015] [Indexed: 02/07/2023] Open
Abstract
Neuroblastoma (NB) is the most common extra cranial solid tumor in childhood and the most frequently diagnosed neoplasm during infancy. A striking feature of this tumor is its clinical heterogeneity. Several tumor progression markers have been delineated so far, among which MYCN amplification, which occurs in about 25% of total NB cases, with the percentage increasing to 30% in advanced stage NB. Although MYCN amplification is strongly correlated with NB of poor outcome, the MYCN status cannot alone predict all cases of poor survival in NB. Indeed NB without MYCN amplification (about 70-80% of NB) are not always favorable. WT1 was initially identified as a tumor suppressor gene involved in the development of a pediatric renal tumor (Wilms' tumor). Here, we describe an inverse correlation between WT1 expression and MYCN amplification and expression. However and most notably, our results show that WT1 gene expression is associated with a poor outcome for patients showing non-MYCN-amplified tumors. Thus WT1 expression is clinically significant in NB and may be a prognostic marker for better risk stratification and for an optimized therapeutic management of NB.
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Affiliation(s)
- Caroline Masserot
- INSERM UMR-S 1007, Cellular Homeostasis and Cancer, Paris, France; Université Paris-Descartes, Paris Sorbonne Cité, Paris, France
| | - Qingyuan Liu
- INSERM UMR-S 1007, Cellular Homeostasis and Cancer, Paris, France; Université Paris-Descartes, Paris Sorbonne Cité, Paris, France
| | - Eric Nguyen
- INSERM UMR-S 1007, Cellular Homeostasis and Cancer, Paris, France; Université Paris-Descartes, Paris Sorbonne Cité, Paris, France
| | - Charles-Henry Gattolliat
- Université Paris-Sud 11, Orsay, France; Signalisation, Noyaux et Innovations Thérapeutiques en Cancérologie CNRS-UMR 8126, Gustave Roussy, Villejuif, France
| | | | - Jean Bénard
- Université Paris-Sud 11, Orsay, France; Signalisation, Noyaux et Innovations Thérapeutiques en Cancérologie CNRS-UMR 8126, Gustave Roussy, Villejuif, France
| | - Catherine Huber
- MAP5, Université Paris Descartes, Sorbonne Paris Cité, France; INSERM UMR-S 1018, 16 bis Avenue Paul Vaillant-Couturier, 94804, Villejuif, France
| | - Evelyne Ségal-Bendirdjian
- INSERM UMR-S 1007, Cellular Homeostasis and Cancer, Paris, France; Université Paris-Descartes, Paris Sorbonne Cité, Paris, France.
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16
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Lauand C, Niero EL, Dias VM, Machado-Santelli GM. Cell cycle synchronization and BrdU incorporation as a tool to study the possible selective elimination of ErbB1 gene in the micronuclei in A549 cells. ACTA ACUST UNITED AC 2015; 48:382-91. [PMID: 25760027 PMCID: PMC4445660 DOI: 10.1590/1414-431x20144262] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2014] [Accepted: 12/10/2014] [Indexed: 11/22/2022]
Abstract
Lung cancer often exhibits molecular changes, such as the overexpression of the
ErbB1 gene that encodes epidermal growth factor receptor (EGFR).
ErbB1 amplification and mutation are associated with tumor
aggressiveness and low response to therapy. The aim of the present study was to
design a schedule to synchronize the cell cycle of A549 cell line (a non-small cell
lung cancer) and to analyze the possible association between the micronuclei (MNs)
and the extrusion of ErbB1 gene extra-copies. After double blocking,
by the process of fetal bovine serum deprivation and vincristine treatment, MNs
formation was monitored with 5-bromo-2-deoxyuridine (BrdU) incorporation, which is an
S-phase marker. Statistical analyses allowed us to infer that MNs may arise both in
mitosis as well as in interphase. The MNs were able to replicate their DNA and this
process seemed to be non-synchronous with the main cell nuclei. The presence of
ErbB1 gene in the MNs was evaluated by fluorescent in
situ hybridization (FISH). ErbB1 sequences were detected
in the MNs, but a relation between the MNs formation and extrusion of amplified
ErbB1could not be established. The present study sought to
elucidate the meaning of MNs formation and its association with the elimination of
oncogenes or other amplified sequences from the tumor cells.
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Affiliation(s)
- C Lauand
- Departamento de Biologia Celular e do Desenvolvimento, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, SP, Brasil
| | - E L Niero
- Departamento de Biologia Celular e do Desenvolvimento, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, SP, Brasil
| | - V M Dias
- Departamento de Biologia Celular e do Desenvolvimento, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, SP, Brasil
| | - G M Machado-Santelli
- Departamento de Biologia Celular e do Desenvolvimento, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, SP, Brasil
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17
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Yu L, Zhao Y, Quan C, Ji W, Zhu J, Huang Y, Guan R, Sun D, Jin Y, Meng X, Zhang C, Yu Y, Bai J, Sun W, Fu S. Gemcitabine eliminates double minute chromosomes from human ovarian cancer cells. PLoS One 2013; 8:e71988. [PMID: 23991020 PMCID: PMC3750019 DOI: 10.1371/journal.pone.0071988] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2013] [Accepted: 07/05/2013] [Indexed: 11/23/2022] Open
Abstract
Double minute chromosomes are cytogenetic manifestations of gene amplification frequently seen in cancer cells. Genes amplified on double minute chromosomes include oncogenes and multi-drug resistant genes. These genes encode proteins which contribute to cancer formation, cancer progression, and development of resistance to drugs used in cancer treatment. Elimination of double minute chromosomes, and therefore genes amplified on them, is an effective way to decrease the malignancy of cancer cells. We investigated the effectiveness of a cancer drug, gemcitabine, on the loss of double minute chromosomes from the ovarian cancer cell line UACC-1598. Gemcitabine is able to decrease the number of double minute chromosomes in cells at a 7500X lower concentration than the commonly used cancer drug hydroxyurea. Amplified genes present on the double minute chromosomes are decreased at the DNA level upon gemcitabine treatment. Gemcitabine, even at a low nanomolar concentration, is able to cause DNA damage. The selective incorporation of double minutes chromatin and γ-H2AX signals into micronuclei provides a strong link between DNA damage and the loss of double minute chromosomes from gemcitabine treated cells. Cells treated with gemcitabine also showed decreased cell growth, colony formation, and invasion. Together, our results suggest that gemcitabine is effective in decreasing double minute chromosomes and this affects the biology of ovarian cancer cells.
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Affiliation(s)
- Lisa Yu
- Laboratory of Medical Genetics, Harbin Medical University, Harbin, China
| | - Yan Zhao
- Laboratory of Medical Genetics, Harbin Medical University, Harbin, China
| | - Chao Quan
- Laboratory of Medical Genetics, Harbin Medical University, Harbin, China
| | - Wei Ji
- Laboratory of Medical Genetics, Harbin Medical University, Harbin, China
| | - Jing Zhu
- Laboratory of Medical Genetics, Harbin Medical University, Harbin, China
| | - Yun Huang
- Laboratory of Medical Genetics, Harbin Medical University, Harbin, China
| | - Rongwei Guan
- Laboratory of Medical Genetics, Harbin Medical University, Harbin, China
| | - Donglin Sun
- Laboratory of Medical Genetics, Harbin Medical University, Harbin, China
| | - Yan Jin
- Laboratory of Medical Genetics, Harbin Medical University, Harbin, China
- Key Laboratory of Medical Genetics (Harbin Medical University), Heilongjiang Higher Education Institutions, Harbin, China
| | - Xiangning Meng
- Laboratory of Medical Genetics, Harbin Medical University, Harbin, China
| | - Chunyu Zhang
- Laboratory of Medical Genetics, Harbin Medical University, Harbin, China
| | - Yang Yu
- Laboratory of Medical Genetics, Harbin Medical University, Harbin, China
| | - Jing Bai
- Laboratory of Medical Genetics, Harbin Medical University, Harbin, China
| | - Wenjing Sun
- Laboratory of Medical Genetics, Harbin Medical University, Harbin, China
| | - Songbin Fu
- Laboratory of Medical Genetics, Harbin Medical University, Harbin, China
- Key Laboratory of Medical Genetics (Harbin Medical University), Heilongjiang Higher Education Institutions, Harbin, China
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18
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Lundberg G, Sehic D, Länsberg JK, Øra I, Frigyesi A, Castel V, Navarro S, Piqueras M, Martinsson T, Noguera R, Gisselsson D. Alternative lengthening of telomeres--an enhanced chromosomal instability in aggressive non-MYCN amplified and telomere elongated neuroblastomas. Genes Chromosomes Cancer 2011; 50:250-62. [PMID: 21319260 DOI: 10.1002/gcc.20850] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2010] [Accepted: 11/30/2010] [Indexed: 01/18/2023] Open
Abstract
Telomere length alterations are known to cause genomic instability and influence clinical course in several tumor types, but have been little investigated in neuroblastoma (NB), one of the most common childhood tumors. In the present study, telomere-dependent chromosomal instability and telomere length were determined in six NB cell lines and fifty tumor biopsies. The alternative lengthening of telomeres (ALT) pathway was assayed by scoring ALT-associated promyelocytic leukemia (PML) bodies (APBs). We found a reduced probability of overall survival for tumors with increased telomere length compared to cases with reduced or unchanged telomere length. In non-MYCN amplified tumors, a reduced or unchanged telomere length was associated with 100% overall survival. Tumor cells with increased telomere length had an elevated frequency of APBs, consistent with activation of the ALT pathway. The vast majority of tumor biopsies and cell lines exhibited an elevated rate of anaphase bridges, suggesting telomere-dependent chromosomal instability. This was more pronounced in tumors with increased telomere length. In cell lines, there was a close correlation between lack of telomere-protective TTAGGG-repeats, anaphase bridging, and remodeling of oncogene sequences. Thus, telomere-dependent chromosomal instability is highly prevalent in NB, and may contribute to the complexity of genomic alterations as well as therapy resistance in the absence of MYCN amplification and in this tumor type.
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Affiliation(s)
- Gisela Lundberg
- Department of Clinical Genetics, Lund University, University and Regional Laboratories, Skåne University Hospital, Lund, Sweden.
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19
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Ewald JA, Desotelle JA, Wilding G, Jarrard DF. Therapy-induced senescence in cancer. J Natl Cancer Inst 2010; 102:1536-46. [PMID: 20858887 DOI: 10.1093/jnci/djq364] [Citation(s) in RCA: 588] [Impact Index Per Article: 42.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Cellular senescence is a response to nonlethal stress that results in persistent cytostasis with a distinct morphological and biochemical phenotype. The senescence phenotype, detected in tumors through the expression of mRNA and protein markers, can be generated in cancer cells lacking functional p53 and retinoblastoma protein. Current research suggests that therapy-induced senescence (TIS) represents a novel functional target that may improve cancer therapy. TIS can be induced in immortal and transformed cancer cells by selected anticancer compounds or radiation, and accumulating data indicate that TIS may produce reduced toxicity-related side effects and increased tumor-specific immune activity. This review examines the current status of TIS-regulated mechanisms, agents, and senescence biomarkers with the goal of encouraging further development of this approach to cancer therapy. Remaining hurdles include the lack of efficient senescence-inducing agents and incomplete biological data on tumor response. The identification of additional compounds and other targeted approaches to senescence induction will further the development of TIS in the clinical treatment of cancer.
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Affiliation(s)
- Jonathan A Ewald
- Department of Urology, University of Wisconsin, School of Medicine and Public Health, 1111 Highland Ave, Madison, WI 53705-2275, USA
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20
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Storlazzi CT, Lonoce A, Guastadisegni MC, Trombetta D, D'Addabbo P, Daniele G, L'Abbate A, Macchia G, Surace C, Kok K, Ullmann R, Purgato S, Palumbo O, Carella M, Ambros PF, Rocchi M. Gene amplification as double minutes or homogeneously staining regions in solid tumors: origin and structure. Genome Res 2010; 20:1198-206. [PMID: 20631050 DOI: 10.1101/gr.106252.110] [Citation(s) in RCA: 153] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Double minutes (dmin) and homogeneously staining regions (hsr) are the cytogenetic hallmarks of genomic amplification in cancer. Different mechanisms have been proposed to explain their genesis. Recently, our group showed that the MYC-containing dmin in leukemia cases arise by excision and amplification (episome model). In the present paper we investigated 10 cell lines from solid tumors showing MYCN amplification as dmin or hsr. Particularly revealing results were provided by the two subclones of the neuroblastoma cell line STA-NB-10, one showing dmin-only and the second hsr-only amplification. Both subclones showed a deletion, at 2p24.3, whose extension matched the amplicon extension. Additionally, the amplicon structure of the dmin and hsr forms was identical. This strongly argues that the episome model, already demonstrated in leukemias, applies to solid tumors as well, and that dmin and hsr are two faces of the same coin. The organization of the duplicated segments varied from very simple (no apparent changes from the normal sequence) to very complex. MYCN was always overexpressed (significantly overexpressed in three cases). The fusion junctions, always mediated by nonhomologous end joining, occasionally juxtaposed truncated genes in the same transcriptional orientation. Fusion transcripts involving NBAS (also known as NAG), FAM49A, BC035112 (also known as NCRNA00276), and SMC6 genes were indeed detected, although their role in the context of the tumor is not clear.
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21
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Prochazka P, Hrabeta J, Vícha A, Eckschlager T. Expulsion of amplified MYCN from homogenously staining chromosomal regions in neuroblastoma cell lines after cultivation with cisplatin, doxorubicin, hydroxyurea, and vincristine. ACTA ACUST UNITED AC 2009; 196:96-104. [PMID: 19963143 DOI: 10.1016/j.cancergencyto.2009.08.005] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2009] [Revised: 06/25/2009] [Accepted: 08/02/2009] [Indexed: 11/28/2022]
Abstract
Amplified MYCN, common in neuroblastomas, can be detected as double minutes (dmin) or homogenously staining chromosomal regions (hsr). Expulsion of amplified MYCN has only been described in dmin. We used hydroxyurea (HU), which accelerates the expulsion of amplified genes and cytostatics (used in neuroblastoma therapy), to describe MYCN amplification changes after chemotherapy. We used IMR-32, SK-N-AS, UKF-NB-2, UKF-NB-3, UKF-NB-4, and derived sublines resistant to doxorubicin, cisplatin, and vincristine. The loss of amplified MYCN copies was investigated using comparative genomic hybridization and by fluorescent in situ hybridization. We found expulsion of amplified MYCN from hsr in UKF-NB-4 and IMR-32 cell lines, and determined the exact number of amplified MYCN copies. After the first cultivation with HU, some amplified MYCN was lost. UKF-NB-4 lost 20 copies on average, and IMR-32 lost 15 copies (P<0.001). After the second cultivation, cells without MYCN amplification were found. In comparison to sensitive cell lines, drug-resistant cell lines lost 17 copies on average. Our data show that expulsion of amplified MYCN genes is also possible from hsr and may be induced, not only by HU, but by other cytostatics as well.
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Affiliation(s)
- Pavel Prochazka
- Department of Pediatric Hematology and Oncology, Charles University in Prague - 2nd Medical School, V Uvalu 84, Prague 15006, Czech Republic.
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22
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Snyder AR, Zhou J, Deng Z, Lieberman PM. Therapeutic doses of hydroxyurea cause telomere dysfunction and reduce TRF2 binding to telomeres. Cancer Biol Ther 2009; 8:1136-45. [PMID: 19363303 DOI: 10.4161/cbt.8.12.8446] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Hydroxyurea (HU) is a chemotherapeutic agent commonly used for various malignancies and hematological disorders, including chronic myelogenous leukemia and sickle cell anemia. We show here that chronic, low-level treatment with HU induces a variety of defects in telomere replication and maintenance. HU treatment preferentially decreased the rate of telomere DNA synthesis and altered the cell cycle timing of telomere replication. HU reduced the expression levels of telomere repeat RNA (TERRA). In some cells, HU caused a rapid loss of telomere restriction fragment length. Chromatin immunoprecipitation (ChIP) assay indicated that telomere repeat binding factors TRF1 and TRF2 dissociate from telomere DNA after HU treatment. TRF2 protein purified from HU treated cells showed a modest reduction in DNA binding activity and a change in isoelectric point as measured by 2D gel electrophoresis. However, chronic low level HU treatment did not evoke a DNA replication checkpoint response, suggesting that the mechanism of action is distinct from the well-characterized S-phase checkpoint pathway. We conclude that therapeutic doses of HU preferentially effects telomere replication and maintenance, through a mechanism that may involve the direct modification of TRF2. These findings provide new insight into the potential mechanisms of action of HU at telomeres and in cancer chemotherapies.
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Affiliation(s)
- Andrew R Snyder
- The Wistar Institute, 3601 Spruce Street, Philadelphia, PA 19104, USA
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Acosta S, Lavarino C, Paris R, Garcia I, de Torres C, Rodríguez E, Beleta H, Mora J. Comprehensive characterization of neuroblastoma cell line subtypes reveals bilineage potential similar to neural crest stem cells. BMC DEVELOPMENTAL BIOLOGY 2009; 9:12. [PMID: 19216736 PMCID: PMC2647534 DOI: 10.1186/1471-213x-9-12] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/12/2008] [Accepted: 02/12/2009] [Indexed: 12/30/2022]
Abstract
Background Neuroblastic tumors (NBT) derive from neural crest stem cells (NCSC). Histologically, NBT are composed by neuroblasts and Schwannian cells. In culture, neuroblastic (N-), substrate-adherent (S-) and intermediate phenotype (I-) cell subtypes arise spontaneously. Methods Here, neuroblastoma (NB) cell line subtypes were characterized according to embryonic peripheral nervous system development markers (GAP43, Phox2b, Sox10, c-kit, GD2, NF68, vimentin, S100β, calcyclin and ABCG2), morphological features, gene expression and differentiation potential. I-type cells were investigated as a bipotential (neuronal and glial) differentiation stage. Results Positive immunostaining of NCSC (GAP43, c-kit, NF68, vimentin and Phox2b) and undifferentiated cell (ABCG2) markers was observed in all NB subtypes. N- and I-type cells displayed cytoplasmic membrane GD2 staining, while nuclear calcyclin was restricted to S-type. N- and I-type cells showed similar phenotype and immunoreactivity pattern. Differential gene expression was associated with each cell subtype. N- and I-type cells displayed similar differentiation capacity towards neuronal and glial lineage fates. S-type cells, upon induction, did not show a neuronal-like phenotype, despite gene expression changes. Conclusion Results suggest that N- and I-type NB cell subtypes represent an immature bilineage stage, able to progress towards neuronal and glial fates upon induction of differentiation. S-type cells appear irreversibly committed to a glial lineage fate.
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Affiliation(s)
- Sandra Acosta
- Developmental tumor biology laboratory, Hospital Sant Joan de Déu, Barcelona, Spain.
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Binomial mitotic segregation of MYCN-carrying double minutes in neuroblastoma illustrates the role of randomness in oncogene amplification. PLoS One 2008; 3:e3099. [PMID: 18769732 PMCID: PMC2518122 DOI: 10.1371/journal.pone.0003099] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2008] [Accepted: 08/08/2008] [Indexed: 01/31/2023] Open
Abstract
BACKGROUND Amplification of the oncogene MYCN in double minutes (DMs) is a common finding in neuroblastoma (NB). Because DMs lack centromeric sequences it has been unclear how NB cells retain and amplify extrachromosomal MYCN copies during tumour development. PRINCIPAL FINDINGS We show that MYCN-carrying DMs in NB cells translocate from the nuclear interior to the periphery of the condensing chromatin at transition from interphase to prophase and are preferentially located adjacent to the telomere repeat sequences of the chromosomes throughout cell division. However, DM segregation was not affected by disruption of the telosome nucleoprotein complex and DMs readily migrated from human to murine chromatin in human/mouse cell hybrids, indicating that they do not bind to specific positional elements in human chromosomes. Scoring DM copy-numbers in ana/telophase cells revealed that DM segregation could be closely approximated by a binomial random distribution. Colony-forming assay demonstrated a strong growth-advantage for NB cells with high DM (MYCN) copy-numbers, compared to NB cells with lower copy-numbers. In fact, the overall distribution of DMs in growing NB cell populations could be readily reproduced by a mathematical model assuming binomial segregation at cell division combined with a proliferative advantage for cells with high DM copy-numbers. CONCLUSION Binomial segregation at cell division explains the high degree of MYCN copy-number variability in NB. Our findings also provide a proof-of-principle for oncogene amplification through creation of genetic diversity by random events followed by Darwinian selection.
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Stock C, Bozsaky E, Watzinger F, Poetschger U, Orel L, Lion T, Kowalska A, Ambros PF. Genes proximal and distal to MYCN are highly expressed in human neuroblastoma as visualized by comparative expressed sequence hybridization. THE AMERICAN JOURNAL OF PATHOLOGY 2007; 172:203-14. [PMID: 18165268 DOI: 10.2353/ajpath.2008.061263] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
MYCN amplification is associated with poor prognosis in neuroblastoma disease. To improve our understanding of the influence of the MYCN amplicon and its corresponding expression, we investigated the 2p expression pattern of MYCN amplified (n = 13) and nonamplified (n = 4) cell lines and corresponding primary tumors (n = 3) using the comparative expressed sequence hybridization technique. All but one MYCN amplified cell line displayed overexpression at 2p. Expression peaks were observed frequently at 2pter and less frequently at 2p24 (MYCN locus), 2p23.3-23.2, and/or 2p23.1. Importantly, cell lines and two corresponding primary tumors displayed expression peaks at similar loci. No significant 2p24 expression level was observed for those cell lines displaying a low amplification rate (n = 3) by comparative genomic hybridization. Only the cell lines with an enhanced peak at 2p23.2-23.3 displayed coamplification of the ALK gene (2p23.2), reported to be associated with unfavorable prognosis. Finally, two of four cell lines without MYCN amplification, both derived from patients with poor outcome, also showed an expression peak at 2p23.2. These data indicate that, besides MYCN, other genes proximal and distal to MYCN are highly expressed in neuroblastoma. The prognostic significance of expression peaks at 2p23.2-23.3, independent of MYCN and ALK status, remains to be investigated.
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Affiliation(s)
- Cornelia Stock
- Children's Cancer Research Institute, St. Anna Kinderkrebsforschung, Kinderspitalgasse 6, A-1090 Vienna, Austria
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Abstract
Neuroblastomas continue to remain a clinical challenge, despite advances in multimodal therapy. Currently, studies are aimed at novel targets for neuroblastoma directed toward poor prognostic indicators such as the MYCN oncogene and marked angiogenesis. There have also been recent discoveries in neuroblastoma pathogenesis involving epigenetic regulation and retinoic acid therapy. Understanding the intricate complexities of this tumor may lead to innovative agents for more effective combinational therapy.
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Shimizu N, Misaka N, Utani KI. Nonselective DNA damage induced by a replication inhibitor results in the selective elimination of extrachromosomal double minutes from human cancer cells. Genes Chromosomes Cancer 2007; 46:865-74. [PMID: 17616968 DOI: 10.1002/gcc.20473] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Gene amplification plays a pivotal role in human malignancy. Highly amplified genes frequently localize to extrachromosomal double minutes (dmin), which usually segregate to daughter cells in association with mitotic chromosomes. We and others had shown that treatment with low-dose hydroxyurea (HU) results in the elimination of dmin and reversion of the cancer cell phenotype. HU treatment in early S-phase, when dmin are replicated, results in their detachment from chromosomes at the next M-phase, leading to the appearance of micronuclei enriched in dmin, followed by their elimination. In this article, we examined the effect of low-dose HU on the behavior of dmin in relation to DNA damage induction by simultaneously monitoring LacO-tagged dmin and phosphorylated histone H2AX (gammaH2AX). As expected, treatment with low-dose HU induced numerous gammaH2AX foci throughout the nucleus in early S-phase, and these rarely coincided with dmin. Most chromosomal gammaH2AX foci disappeared by metaphase, whereas, unexpectedly, those that persisted frequently associated with dmin. We found that these dmin aggregated, detached from anaphase chromosomes, and apparently formed micronuclei. Because gammaH2AX foci likely represent DNA double strand breaks (DSBs), the response to DSBs sustained by extrachromosomal dmin appears to be different from that sustained by chromosomal loci, which may explain why DSB-inducing agents cause the selective elimination of dmin.
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Affiliation(s)
- Noriaki Shimizu
- Graduate School of Biosphere Science, Hiroshima University, 1-7-1 Kagamiyama, Higashi-hiroshima, Japan.
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